The environments of tropical and subtropical coral reef regions(CRR)differ from each other;however,it is not known if these environmental differences influence coral polyp and skeleton microbiome composition.In this s...The environments of tropical and subtropical coral reef regions(CRR)differ from each other;however,it is not known if these environmental differences influence coral polyp and skeleton microbiome composition.In this study,Coelastrea palauensis corals were collected from tropical and subtropical CRR in the South China Sea,and bacterial,archaeal,and fungal communities in polyps and skeletons were analyzed.Results showed that the microbial diversity and composition of C.palauensis significantly differed between the polyps and skeletons,and between the tropical and subtropical CRR.Regarding bacteria associated with corals,C.palauensis was mainly associated with bacteria closely related to the nitrogen cycle in the subtropical CRR.The relative abundances of Terasakiellaceae and Chlorobium in both coral polyps and skeletons in the subtropical CRR were higher than those in the tropical CRR.In the tropical CRR,C.palauensis was mainly associated with opportunistic pathogenic bacteria.The relative abundances of Tenacibaculum and Vibrio in coral polyps and skeletons in the tropical CRR were higher than those in the subtropical CRR.Regarding archaea associated with corals,polyps and skeletons of C.palauensis in both tropical and subtropical reef areas were dominated by n_Woesearchaeales,and the relative abundance of n_Woesearchaeales in skeletons is significantly higher than that in polyps.In addition,the relative abundances of n_Woesearchaeales in polyps and skeletons in the subtropical CRR were significantly higher than those in the tropical CRR.Regarding fungi associated with corals,Ascomycota was dominant in polyps and skeletons in the subtropical CRR,while Sordariomycetes,Periconia,Cladosporium,and Aspergillus were dominant in polyps and skeletons in the tropical CRR.Besides,the diversity differences of coral-associated microorganisms were related to environmental factors such as nutrients and temperature that may affect the survival of coral-associated microorganisms.These results implied that corals may adjust the composition of microorganisms,conducive the coral holobiont to better adapting the environment.Our research will be beneficial in understanding the differences and adaptations of coral polyp and skeletal microbiome.展开更多
Metamaterials with artificial designability and perfect absorption provide a novel design method for the manipulation and attenuation of microwaves.However,owing to the limitations of meta-atomic reso-nance effect and...Metamaterials with artificial designability and perfect absorption provide a novel design method for the manipulation and attenuation of microwaves.However,owing to the limitations of meta-atomic reso-nance effect and the lossless medium,it is difficult to achieve effective microwave absorption in a broad-band frequency range.Hence,an ultra-wideband metamaterial absorber(UWMA)composed of two mag-netic media and a metasurface was designed,and the absorption bandwidth of 2.9 to 18 GHz for 90%absorptivity under normal incidence was achieved,covering almost the entire S,C,X,and Ku bands.Through detailed investigation of equivalent circuit,equivalent medium theory,electromagnetic field dis-tribution and front-back interface interference,the internal physical working mechanism was clarified essentially.In addition,the multi-environment adaptabilities of the proposed absorber,including polariza-tion sensitivity,large angle incidence,dual-station radar stealth,bearing capacity and corrosion resistance,were analyzed.The proposed metamaterial absorber presents an effective way to achieve ultra-wideband absorption and compatibility with environmental adaptability,and provides a new way of thinking for intelligent full-band stealth technology.展开更多
Turpan traditional residences are primitive green buildings adaptive to the climate, materials and geographical conditions of the arid regions. The environmental adaptability of local residences and the construction m...Turpan traditional residences are primitive green buildings adaptive to the climate, materials and geographical conditions of the arid regions. The environmental adaptability of local residences and the construction methods was elaborated to provide references for building new oasis settlements in the local area.展开更多
It has been widely recognized that biological invasion has become one of the greatest threats to the ecosystem.Codium fragile is an invasive species which exhibits a variety of attributes like parthenogenesis,winter f...It has been widely recognized that biological invasion has become one of the greatest threats to the ecosystem.Codium fragile is an invasive species which exhibits a variety of attributes like parthenogenesis,winter fragment,and vegetative reproduction;and therefore,it has become a successful invader,colonizing most subtropical regions.In China’s southeast coastal aquaculture waters,the green algal bloom caused by C.fragile will probably become a serious problem.In order to understand more details about the species,an experiment focused on its reproductive characteristics was conducted using culture established from a sample collected in the aquaculture raft of the Nan’ao Island in the South China Sea.The results showed that there were two types of gametes resembling aplanospores and zoospores respectively,both of which were able to germinate.During the gametes liberation,a long mucilage tube was formed out of the mouth of the gametangium assisting dispersal of gametes away from the parent plant.This tube was adapted not only to its surrounding flowing water environment but also to its parent plant’s outer gelatinous structure.In general,the optimum temperature for gametes release and germination was 15-20℃ and 15℃,respectively,which corresponded to the local offshore marine water.The plant was observed to produce vegetative buds under favourable reproductive conditions which were called propagules.They were capable of developing into filamentous thalli.The results will provide some scientific evidences for revealing the biological mechanism of bloom and control strategies of invasive green algae.展开更多
Lightweight and flexible fiber devices are currently attracting significant interest in the field of advanced wearable electron-ics.However,many electroluminescent fiber devices suffer from high operating voltage and ...Lightweight and flexible fiber devices are currently attracting significant interest in the field of advanced wearable electron-ics.However,many electroluminescent fiber devices suffer from high operating voltage and power consumption.To address this issue,a novel low-power-consumption coaxial electrophoretic display fiber(EPDF)with low-power-consumption,which consists of silver nanowire electrodes,electrophoretic microcapsule layer,polydimethylsiloxane(PDMS)encapsulation layer and PDMS substrate,was fabricated using a simple dip-coating method.The prepared fiber devices exhibit full functionality under a human-safe voltage of 30 V,featuring uniform and angle-independent contrast.Moreover,the EPDFs demonstrate excellent flexibility and mechanical stability,capable of operating properly at axial strains exceeding 50%and maintaining performance after 1000 cycles of 30%strain.The EPDFs,encapsulated with transparent PDMS,demonstrating exceptional wearability and biocompatibility.Benefiting from the distinctive bistable characteristics of electrophoretic microcapsule particles,EPDFs exhibit ultralow power consumption,and the varying light absorption capacities in different display states empower them to adapt effectively to diverse environments.These remarkable features qualify EPDFs for various outdoor wearable applications.Finally,a proof-of-concept of electrophoretic display fabric is demonstrated by weaving the as-pre-pared fiber with common yarn,showcasing the future perspective of wearable functional textiles entirely woven from EPD.展开更多
It is still an enormous challenge to regulate microstructure of pure carbonaceous electromagnetic(EM)wave absorbents in order to gain superior wideband microwave absorption(MA)with environmentally adaptive ability.Her...It is still an enormous challenge to regulate microstructure of pure carbonaceous electromagnetic(EM)wave absorbents in order to gain superior wideband microwave absorption(MA)with environmentally adaptive ability.Herein,the novel pure cellulose-derived graphite carbon materials(CGC)with abundant defects were fabricated via the self-assembly strategy combined with simple carbonization for the first time.The EM and MA performance of as-prepared CGC with different carbonization temperatures were studied in detail.The minimum reflection loss of CGC was up to-46.2 dB(over 99.99%MA)at only 1.42 mm,and the maximum effective absorption bandwidth(EABmax,RL<-10 dB)was as wide as 6.32 GHz.The greatly improved MA of pure carbon materials outperformed those of many previously reported carbon-based composite absorbents with tedious preparation process.The excellent MA property was attributed to the optimal synergy of good impedance matching and satisfactory EM attenuation capability.Besides,the CGC still retains a strong and broadband MA ability in the simulated real harsh environmental conditions(acid rain/alkaline solution,salt spray and strong UV exposure).Hence,the CGC is believed to be a very promising candidate as high-efficiency EM wave absorbents with wide frequency and excellent environmental adaptability for practical application.展开更多
Earthen sites are important remains of past human societies.Weather-resistant measures comprise a major part of conservation eforts for earthen sites.Marked advancements in weather-resistant techniques have been made ...Earthen sites are important remains of past human societies.Weather-resistant measures comprise a major part of conservation eforts for earthen sites.Marked advancements in weather-resistant techniques have been made in recent years.Earthen sites are characterised by large numbers,large scales,various types,complex compositions,and diverse existing environments.Weather-resistant measures difer signifcantly in their environmental adaptability.The environmental adaptability of weather-resistant measures severely restricts further development and popularisation of weather-resistant technology at earthen sites.Based on the environmental and weathering characteristics of existing earthen sites in China,the consolidation and failure mechanisms of several weather-resistant measures(penetrating consolidation,sacrifcial layers,soft capping,protective structures,and backflling protection)were examined.The potential areas to increase the success of the diferent weather-resistant measures were obtained combined with the characteristics of various environmental boundaries.展开更多
High-speed trains rely on pantograph-catenary systems(PCSs)to collect electrical energy from power systems.However,the dynamic interaction between the pantograph and the catenary system may become mismatched once ice ...High-speed trains rely on pantograph-catenary systems(PCSs)to collect electrical energy from power systems.However,the dynamic interaction between the pantograph and the catenary system may become mismatched once ice accumulates on the overhead conductors.More frequent arcing may occur within the PCS during train operation,posing an unpredictable threat to operational safety.Therefore,it is crucial to evaluate the ability of overhead contact system(OCS)to withstand ice-covered variability during line desgin.A new strategy is proposed to evaluate the adaptive performance of an OCS under various icing conditions.First,a dynamic model considering icing conditions is constructed to simulate the interaction within the PCS.Five different OCS structures with various icing thicknesses are studied.The parameters of the contact force within the PCS and proportion of high-possibility arcing moments are obtained.The dependence of the contact force on the icing thickness and pantograph displacement has been illustrated in the form of cloud maps.Finally,the OCS sensitivity coefficient is calculated,and ice-covered environmental adaptability assessments for the five different OCS structures are compared.展开更多
Prochlorococcus,a group of marine cyanobacteria,is the most abundant and smallest oxygen-producing photosynthetic microorganism.It is mainly distributed in the euphotic zone of tropical and subtropical oceans and is a...Prochlorococcus,a group of marine cyanobacteria,is the most abundant and smallest oxygen-producing photosynthetic microorganism.It is mainly distributed in the euphotic zone of tropical and subtropical oceans and is a key participant in the marine biogeochemical cycle.Prochlorococcus has evolved continuously to adapt to the marine environment,and can be considered a recent evolutionary form of cyanobacteria,one of the most ancient life forms.The diverse ecotypes and subecotypes of Prochlorococcus increase its genomic diversity and environmental adaptability,allowing Prochlorococcus to become a dominant species in its environment.Here we review the ecotype classification and distribution,ecotype and subecotype differentiation,and environmental adaptability of Prochlorococcus.We also evaluate the role and significance of ecotype and sub-ecotype differentiation of Prochlorococcus,and discuss future research directions on this basis.展开更多
Intraspecific genetic variance and gene flow can support the adaptive evolution of species challenged by climate shifts or novel environmental conditions.Less well understood is how genome organization and gene flow i...Intraspecific genetic variance and gene flow can support the adaptive evolution of species challenged by climate shifts or novel environmental conditions.Less well understood is how genome organization and gene flow interact in closely related species during evolutionary divergence and differentiation.Here we conducted genomic footprint analyses to determine how three species of Pterocarya(P.stenoptera,P.hupehensis,and P.macroptera),which are sympatric but occupy different elevational niches,adapted to the heterogeneous environment of the Qinling-Daba Mountains,China.We identified candidate genes for environmental adaptation(i.e.,PIEZO1,WRKY39,VDAC3,CBL1,and RAF),and also identified regions of gene introgression between P.hupehensis and P.macroptera that show lower genetic load and higher genetic diversity than the rest of their genomes.The same introgressed regions are notably situated in areas of minimal genetic divergence yet they are characterized by elevated recombination rates.We also identified candidate genes within these introgressed regions related to environmental adaptation(TPLC2,CYCH;1,LUH,bHLH112,GLX1,TLP-3,and ABC1).Our findings have thus clarified the important role of gene flow in ecological adaptation and revealed genomic signatures of past introgression.Together,these findings provide a stronger theoretical basis for understanding the ecological adaptation and conservation of Quaternary relict woody plants in East Asia.展开更多
Invasive macroalgae are recognized as one of the greatest threats to local marine ecology and economy.Chaetomorpha valida is an invasive species in China,originally found in Dalian City,Liaoning Province,and has now i...Invasive macroalgae are recognized as one of the greatest threats to local marine ecology and economy.Chaetomorpha valida is an invasive species in China,originally found in Dalian City,Liaoning Province,and has now invaded southward to seas such as Rongcheng City,Shandong Province.Its overgrowth has seriously damaged the local mariculture industry.Based on two strains of C.valida isolated in our previous study,this study explores the effects of temperature and irradiance on their growth and reproduction under laboratory conditions.The results show that the suitable temperature ranges are primarily 21−29℃.The optimal temperature is 25℃for gametophytic growth and sporophytic asexual reproduction,and 29℃for sporophytic growth and gametophytic sexual reproduction.And there is no significant effect of irradiance on their growth and reproduction.Meanwhile,the suitable temperature ranges and optimum irradiance for the growth and reproduction of both strains are largely similar,with only slight differences in the suitable ones for sporophytic asexual reproduction and gametophytic growth.Accordingly,the effect of temperature on the isomorphic generation alternation in C.valida was analyzed,as well as the dynamics of its generation alternation and invasive potential for its environmental adaptation in the northern and southern seas of China.This will help to understand its dynamic pattern spreading from the north to south in China,and also be an important reference for understanding the generation alternation characteristics,invasions and prevention of the outbreaks of other green tidal algae.展开更多
The cold atom gravimeter offers the prospect of a new generation of inertial sensors for field applications. We ac- complish a mobile atom gravimeter. With the compact and stable system, a sensitivity of 1.4× 10-...The cold atom gravimeter offers the prospect of a new generation of inertial sensors for field applications. We ac- complish a mobile atom gravimeter. With the compact and stable system, a sensitivity of 1.4× 10-7 g.Hz-1/2 is achieved. Moreover, a continuous gravity monitoring of 80 h is carried out. However, the harsh outdoor environment is a big challenge for the atom gravimeter when it is for field applications. In this paper, we present the preliminary investigation of the thermal adaptability for our mobile cold atom gravimeter. Here, we focus on the influence of the air temperature on the performance of the atom gravimeter. The responses to different factors （such as laser power, fiber coupling efficiency, etc.） are evaluated when there is a great temperature shift of 10 ℃. The result is that the performances of all the factors deteriorate to different extent, nevertheless, they can easily recover as the temperature comes back. Finally, we conclude that the variation of air temperature induces the increase of noise and the system error of the atom gravimeter as well, while the process is reversible with the recovery of the temperature.展开更多
Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives,the ubiquitous use of electronics comes at the expense of increased exposure to electromagne...Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives,the ubiquitous use of electronics comes at the expense of increased exposure to electromagnetic(EM)radiation.Up to date,extensive efforts have been made to develop high-performance EM absorbers based on synthetic materials.However,the design of an EM absorber with both exceptional EM dissipation ability and good environmental adaptability remains a substantial challenge.Here,we report the design of a class of carbon heterostructures via hierarchical assembly of graphitized lignocellulose derived from bamboo.Specifically,the assemblies of nanofibers and nanosheets behave as a nanometer-sized antenna,which results in an enhancement of the conductive loss.In addition,we show that the composition of cellulose and lignin in the precursor significantly influences the shape of the assembly and the formation of covalent bonds,which affect the dielectric response-ability and the surface hydrophobicity(the apparent contact angle of water can reach 135°).Finally,we demonstrate that the obtained carbon heterostructure maintains its wideband EM absorption with an effective absorption frequency ranging from 12.5 to 16.7 GHz under conditions that simulate the real-world environment,including exposure to rainwater with slightly acidic/alkaline pH values.Overall,the advances reported in this work provide new design principles for the synthesis of high-performance EM absorbers that can find practical applications in real-world environments.展开更多
Based on specimens collected in Yinggehai, Hainan, China from 2013 to 2016, a stable epiphytic taxon is found on the surface of the individual of marine green alga Cladophora aokii Yamada. According to the morphologic...Based on specimens collected in Yinggehai, Hainan, China from 2013 to 2016, a stable epiphytic taxon is found on the surface of the individual of marine green alga Cladophora aokii Yamada. According to the morphological characteristics, the taxonomy of Cl. aokii and its epiphytes is carried out. There are some epiphytes attached on Cl. aokii Yamada including Cl. fascicularis （Mertens ex C. Agardh） Kfitzing, Chaetomorpha pachynerna （Montagne） Kiitzing, Cerarniurn carnouii Dawson, Licmophora abbreviata Agardh, Lyngbya sp. and Chattonella sp.. The formation of the individual of Cl. aokii is dissected and explained, which can help to analyze the adaption in details among this species, its epiphytes and native marine environment. The results reveal the marine macroepiphytic taxonomy in Ha/nan, China, and preliminarily explain the adaptive relationship between macroalgae and environment.展开更多
Manganese superoxide dismutase(MnSOD)is an antioxidant that exists in mitochondria and can effectively remove superoxide anions in mitochondria.In a dark,high-pressure,and low-temperature deep-sea environment,MnSOD is...Manganese superoxide dismutase(MnSOD)is an antioxidant that exists in mitochondria and can effectively remove superoxide anions in mitochondria.In a dark,high-pressure,and low-temperature deep-sea environment,MnSOD is essential for the survival of sea cucumbers.Six MnSODs were identified from the transcriptomes of deep and shallow-sea sea cucumbers.To explore their environmental adaptation mechanism,we conducted environmental selection pressure analysis through the branching site model of PAML software.We obtained night positive selection sites,and two of them were significant(97F→H,134K→V):97F→H located in a highly conservative characteristic sequence,and its polarity c hange might have a great impact on the function of MnSOD;134K→V had a change in piezophilic a bility,which might help MnSOD adapt to the environment of high hydrostatic pressure in the deepsea.To further study the effect of these two positive selection sites on MnSOD,we predicted the point mutations of F97H and K134V on shallow-sea sea cucumber by using MAESTROweb and PyMOL.Results show that 97F→H,134K→V might improve MnSOD’s efficiency of scavenging superoxide a nion and its ability to resist high hydrostatic pressure by moderately reducing its stability.The above results indicated that MnSODs of deep-sea sea cucumber adapted to deep-sea environments through their amino acid changes in polarity,piezophilic behavior,and local stability.This study revealed the correlation between MnSOD and extreme environment,and will help improve our understanding of the organism’s adaptation mechanisms in deep sea.展开更多
Aqueous zinc-ion batteries are promising candidates as stationary storage systems for power-grid applications due to their high safety and low cost.The practical implementation of Zn-ion batteries currently still face...Aqueous zinc-ion batteries are promising candidates as stationary storage systems for power-grid applications due to their high safety and low cost.The practical implementation of Zn-ion batteries currently still faces formidable challenges because of Zn dendrite growth,hydrogen evolution,and inadequate environmental adaptability.Herein,to address these challenges,a strategy of regulation of water molecules coordination in electrolyte is proposed via developing a cross-linked hydrophilic hydrogel polymer electrolyte.Within this system,the continuous hydrogen bond among H_(2)O molecules is disrupted and the isolated H_(2)O molecules are strongly bound with a polymeric matrix comprised of polyacrylamide,carboxymethyl cellulose,and ethylene glycol,which can restrain the activity of H_(2)O molecules,thus effectively alleviating Zn dendrite growth and hydrogen evolution and enhancing the anti-freezing ability.With this electrolyte,the Zn||Cu cell presents a high coulombic efficiency of 99.4%over 900 cycles and Zn||Zn symmetric cell exhibits high cycling stability,maintaining plating/stripping for over 1,700 h.Moreover,the assembled Zn||PANI device also demonstrates outstanding electrochemical performance over a wide-temperature range,including a long cycling life over 14,120 cycles at room temperature and an ultralong cycling surpassing 30,000 cycles even at−40℃.This showcases the manipulation of water coordination chemistry for advanced,highly adaptable batteries.展开更多
Sorghum,renowned for its substantial biomass production and remarkable tolerance to various stresses,possesses extensive gene resources and phenotypic variations.A comprehensive understanding of the genetic basis unde...Sorghum,renowned for its substantial biomass production and remarkable tolerance to various stresses,possesses extensive gene resources and phenotypic variations.A comprehensive understanding of the genetic basis underlying complex agronomic traits is essential for unlocking the potential of sorghum in addressing food and feed security and utilizing marginal lands.In this context,we provide an overview of the major trends in genomic resource studies focusing on key agronomic traits over the past decade,accompanied by a summary of functional genomic platforms.We also delve into the molecular functions and regulatory networks of impactful genes for important agricultural traits.Lastly,we discuss and synthesize the current challenges and prospects for advancing molecular design breeding by gene-editing and polymerization of the excellent alleles,with the aim of accelerating the development of desired sorghum varieties.展开更多
CRISPR/Cas9-based gene editing research has advanced greatly and shows broad potential for practical application in life sciences,but the Cas9 system is often constrained by the requirement of a protospacer adjacent m...CRISPR/Cas9-based gene editing research has advanced greatly and shows broad potential for practical application in life sciences,but the Cas9 system is often constrained by the requirement of a protospacer adjacent motif(PAM)at the target site.While xCas9,a variant derived from Streptococcus pyogenes Cas9(SpCas9),can recognize a broader range of PAMs,its application in non-model insects is lacking.In this study,we explored xCas9 activity in gene editing by selecting corazonin(Crz)and the target sites with various PAMs in Locusta migratoria,a destructive insect pest worldwide.We found that xCas9 could cleave the target site with AG PAM while SpCas9 could not,although xCas9 appeared to have lower activity than SpCas9 at the canonical NGG PAMs.The heritable homozygous Crz^(-/-)locust strain was generated by the application of xCas9.The Crz^(-/-)strain showed an albino body color,with significantly downregulated expression of several body color-related genes including Pale,Vermilion,Cinnabar,White andβ-carotene-binding protein.In addition,Crz^(-/-)mutants exhibited significantly reduced expression of Chitin synthase 1,along with a markedly lower chitin content as well as compact and rigid cuticles.Furthermore,Crz^(-/-)mutants displayed impaired performance under low-temperature stress,including prolonged lifespan,reduced body weight and smaller body size.Our results suggest that xCas9 is effective for insect genome editing,and Crz plays essential roles in insect body color,cuticle development and adaptation to low-temperature stress.The findings of this study extend the application of xCas9 in non-model insects and provide new insights into our understanding of the regulation of insect cuticle development and environmental adaptation.展开更多
The paleoenvironmental changes and adaptation strategies of hominins during the Late Pleistocene are crucial for understanding the evolution,dispersal,and behavioral shifts of early modern humans.Despite South China&#...The paleoenvironmental changes and adaptation strategies of hominins during the Late Pleistocene are crucial for understanding the evolution,dispersal,and behavioral shifts of early modern humans.Despite South China's significance as a nexus for hominin dispersal and handaxe technology diffusion,quantitative reconstructions of paleoenvironments linked to archaeological records remain scarce.The Sandinggai site(96.6-13.3 ka BP)in central South China,with its well-preserved stratigraphy and abundant lithic artefacts,is notable for providing valuable insights.In this study,quantitative reconstruction of the vegetation succession and climate change sequences at the site was conducted using palynological and isotopic data.The results indicated a shift from a warm-temperate evergreen and deciduous broadleaf mixed forest to a temperate deciduous broadleaf forest,with the climate transitioning from warm and humid to cooler and drier conditions.During the early phase,an increase in lithic production suggested favorable conditions for hominin survival.In the later phase,decreased lithic production and the replacement of large handaxe tools by smaller flake tools,indicated that hominins adapted to the cooler,drier climate and more open landscapes through lithic miniaturization.These findings highlight the environment-driven adaptation of lithic technology and hominin behavior,thereby shedding light on human survival adaptation strategies.展开更多
基金The National Natural Science Foundation of China under contract Nos 42206157,42030502,and 42090041the Natural Science Foundation of Guangxi Province under contract No.2022GXNSFBA035449the Self-Topic Project of Guangxi Laboratory on the Study of Coral Reefs in the South China Sea under contract No.GXLSCRSCS2022103.
文摘The environments of tropical and subtropical coral reef regions(CRR)differ from each other;however,it is not known if these environmental differences influence coral polyp and skeleton microbiome composition.In this study,Coelastrea palauensis corals were collected from tropical and subtropical CRR in the South China Sea,and bacterial,archaeal,and fungal communities in polyps and skeletons were analyzed.Results showed that the microbial diversity and composition of C.palauensis significantly differed between the polyps and skeletons,and between the tropical and subtropical CRR.Regarding bacteria associated with corals,C.palauensis was mainly associated with bacteria closely related to the nitrogen cycle in the subtropical CRR.The relative abundances of Terasakiellaceae and Chlorobium in both coral polyps and skeletons in the subtropical CRR were higher than those in the tropical CRR.In the tropical CRR,C.palauensis was mainly associated with opportunistic pathogenic bacteria.The relative abundances of Tenacibaculum and Vibrio in coral polyps and skeletons in the tropical CRR were higher than those in the subtropical CRR.Regarding archaea associated with corals,polyps and skeletons of C.palauensis in both tropical and subtropical reef areas were dominated by n_Woesearchaeales,and the relative abundance of n_Woesearchaeales in skeletons is significantly higher than that in polyps.In addition,the relative abundances of n_Woesearchaeales in polyps and skeletons in the subtropical CRR were significantly higher than those in the tropical CRR.Regarding fungi associated with corals,Ascomycota was dominant in polyps and skeletons in the subtropical CRR,while Sordariomycetes,Periconia,Cladosporium,and Aspergillus were dominant in polyps and skeletons in the tropical CRR.Besides,the diversity differences of coral-associated microorganisms were related to environmental factors such as nutrients and temperature that may affect the survival of coral-associated microorganisms.These results implied that corals may adjust the composition of microorganisms,conducive the coral holobiont to better adapting the environment.Our research will be beneficial in understanding the differences and adaptations of coral polyp and skeletal microbiome.
基金National Natural Science Foundation of China(Nos.52103334,52071053,and U1704253)China Postdoctoral Science Foundation(Nos.2020M680946 and 2020M670748)+1 种基金Fundamental Research Funds for the Central Universities(No.DUT20GF111)Fundamental Research Funds of Shaanxi Key Laboratory of Artificially–Structured Functional Materials and Devices(No.AFMD–KFJJ–21102).
文摘Metamaterials with artificial designability and perfect absorption provide a novel design method for the manipulation and attenuation of microwaves.However,owing to the limitations of meta-atomic reso-nance effect and the lossless medium,it is difficult to achieve effective microwave absorption in a broad-band frequency range.Hence,an ultra-wideband metamaterial absorber(UWMA)composed of two mag-netic media and a metasurface was designed,and the absorption bandwidth of 2.9 to 18 GHz for 90%absorptivity under normal incidence was achieved,covering almost the entire S,C,X,and Ku bands.Through detailed investigation of equivalent circuit,equivalent medium theory,electromagnetic field dis-tribution and front-back interface interference,the internal physical working mechanism was clarified essentially.In addition,the multi-environment adaptabilities of the proposed absorber,including polariza-tion sensitivity,large angle incidence,dual-station radar stealth,bearing capacity and corrosion resistance,were analyzed.The proposed metamaterial absorber presents an effective way to achieve ultra-wideband absorption and compatibility with environmental adaptability,and provides a new way of thinking for intelligent full-band stealth technology.
基金Sponsored by National Natural Science Foundation of China(51668058)
文摘Turpan traditional residences are primitive green buildings adaptive to the climate, materials and geographical conditions of the arid regions. The environmental adaptability of local residences and the construction methods was elaborated to provide references for building new oasis settlements in the local area.
基金The National Natural Science Foundation of China under contract Nos 31970216 and 31670199the Science and Technology Plan Project of Guangdong Province under contract No.2012A020200007+1 种基金the Scientific Research Plan of Tianjin Municipal Education Committee under contract No.JW1705the Research Fund for Talented Scholars of Tianjin Normal University(2016)。
文摘It has been widely recognized that biological invasion has become one of the greatest threats to the ecosystem.Codium fragile is an invasive species which exhibits a variety of attributes like parthenogenesis,winter fragment,and vegetative reproduction;and therefore,it has become a successful invader,colonizing most subtropical regions.In China’s southeast coastal aquaculture waters,the green algal bloom caused by C.fragile will probably become a serious problem.In order to understand more details about the species,an experiment focused on its reproductive characteristics was conducted using culture established from a sample collected in the aquaculture raft of the Nan’ao Island in the South China Sea.The results showed that there were two types of gametes resembling aplanospores and zoospores respectively,both of which were able to germinate.During the gametes liberation,a long mucilage tube was formed out of the mouth of the gametangium assisting dispersal of gametes away from the parent plant.This tube was adapted not only to its surrounding flowing water environment but also to its parent plant’s outer gelatinous structure.In general,the optimum temperature for gametes release and germination was 15-20℃ and 15℃,respectively,which corresponded to the local offshore marine water.The plant was observed to produce vegetative buds under favourable reproductive conditions which were called propagules.They were capable of developing into filamentous thalli.The results will provide some scientific evidences for revealing the biological mechanism of bloom and control strategies of invasive green algae.
基金supported by MOST(2022YFA1203003).The funder played no role in the study design,data collection,analysis,and interpretation of data,or the writing of this manuscript.
文摘Lightweight and flexible fiber devices are currently attracting significant interest in the field of advanced wearable electron-ics.However,many electroluminescent fiber devices suffer from high operating voltage and power consumption.To address this issue,a novel low-power-consumption coaxial electrophoretic display fiber(EPDF)with low-power-consumption,which consists of silver nanowire electrodes,electrophoretic microcapsule layer,polydimethylsiloxane(PDMS)encapsulation layer and PDMS substrate,was fabricated using a simple dip-coating method.The prepared fiber devices exhibit full functionality under a human-safe voltage of 30 V,featuring uniform and angle-independent contrast.Moreover,the EPDFs demonstrate excellent flexibility and mechanical stability,capable of operating properly at axial strains exceeding 50%and maintaining performance after 1000 cycles of 30%strain.The EPDFs,encapsulated with transparent PDMS,demonstrating exceptional wearability and biocompatibility.Benefiting from the distinctive bistable characteristics of electrophoretic microcapsule particles,EPDFs exhibit ultralow power consumption,and the varying light absorption capacities in different display states empower them to adapt effectively to diverse environments.These remarkable features qualify EPDFs for various outdoor wearable applications.Finally,a proof-of-concept of electrophoretic display fabric is demonstrated by weaving the as-pre-pared fiber with common yarn,showcasing the future perspective of wearable functional textiles entirely woven from EPD.
文摘It is still an enormous challenge to regulate microstructure of pure carbonaceous electromagnetic(EM)wave absorbents in order to gain superior wideband microwave absorption(MA)with environmentally adaptive ability.Herein,the novel pure cellulose-derived graphite carbon materials(CGC)with abundant defects were fabricated via the self-assembly strategy combined with simple carbonization for the first time.The EM and MA performance of as-prepared CGC with different carbonization temperatures were studied in detail.The minimum reflection loss of CGC was up to-46.2 dB(over 99.99%MA)at only 1.42 mm,and the maximum effective absorption bandwidth(EABmax,RL<-10 dB)was as wide as 6.32 GHz.The greatly improved MA of pure carbon materials outperformed those of many previously reported carbon-based composite absorbents with tedious preparation process.The excellent MA property was attributed to the optimal synergy of good impedance matching and satisfactory EM attenuation capability.Besides,the CGC still retains a strong and broadband MA ability in the simulated real harsh environmental conditions(acid rain/alkaline solution,salt spray and strong UV exposure).Hence,the CGC is believed to be a very promising candidate as high-efficiency EM wave absorbents with wide frequency and excellent environmental adaptability for practical application.
基金the National Key R&D Program of China(Grant No.2020YFC1522202)the Science and Technology Department of Gansu province(Grant No.18YF1WA003)program of Dunhuang Academy(Grant No.2020-kJ-YB-9).
文摘Earthen sites are important remains of past human societies.Weather-resistant measures comprise a major part of conservation eforts for earthen sites.Marked advancements in weather-resistant techniques have been made in recent years.Earthen sites are characterised by large numbers,large scales,various types,complex compositions,and diverse existing environments.Weather-resistant measures difer signifcantly in their environmental adaptability.The environmental adaptability of weather-resistant measures severely restricts further development and popularisation of weather-resistant technology at earthen sites.Based on the environmental and weathering characteristics of existing earthen sites in China,the consolidation and failure mechanisms of several weather-resistant measures(penetrating consolidation,sacrifcial layers,soft capping,protective structures,and backflling protection)were examined.The potential areas to increase the success of the diferent weather-resistant measures were obtained combined with the characteristics of various environmental boundaries.
基金China State Railway Group Co.,Ltd.(L2022G006)Chengdu Guojia Electrical Engineering Co.,Ltd.(NEEC-2022-A04)Natural Science Foundation of Sichuan Province(2022NSFSC1863).
文摘High-speed trains rely on pantograph-catenary systems(PCSs)to collect electrical energy from power systems.However,the dynamic interaction between the pantograph and the catenary system may become mismatched once ice accumulates on the overhead conductors.More frequent arcing may occur within the PCS during train operation,posing an unpredictable threat to operational safety.Therefore,it is crucial to evaluate the ability of overhead contact system(OCS)to withstand ice-covered variability during line desgin.A new strategy is proposed to evaluate the adaptive performance of an OCS under various icing conditions.First,a dynamic model considering icing conditions is constructed to simulate the interaction within the PCS.Five different OCS structures with various icing thicknesses are studied.The parameters of the contact force within the PCS and proportion of high-possibility arcing moments are obtained.The dependence of the contact force on the icing thickness and pantograph displacement has been illustrated in the form of cloud maps.Finally,the OCS sensitivity coefficient is calculated,and ice-covered environmental adaptability assessments for the five different OCS structures are compared.
基金supported by the National Natural Science Foundation of China(Grant Nos.41906110,41876150,41861144018&91751207)the Fundamental Research Funds for the Central Universities(Grant Nos.26420190053,20720190141&20720170107)the State Key Laboratory of Marine Environmental Science(Xiamen University)Visiting Fellowship Program(Grant No.MELRS1911)。
文摘Prochlorococcus,a group of marine cyanobacteria,is the most abundant and smallest oxygen-producing photosynthetic microorganism.It is mainly distributed in the euphotic zone of tropical and subtropical oceans and is a key participant in the marine biogeochemical cycle.Prochlorococcus has evolved continuously to adapt to the marine environment,and can be considered a recent evolutionary form of cyanobacteria,one of the most ancient life forms.The diverse ecotypes and subecotypes of Prochlorococcus increase its genomic diversity and environmental adaptability,allowing Prochlorococcus to become a dominant species in its environment.Here we review the ecotype classification and distribution,ecotype and subecotype differentiation,and environmental adaptability of Prochlorococcus.We also evaluate the role and significance of ecotype and sub-ecotype differentiation of Prochlorococcus,and discuss future research directions on this basis.
基金supported by the National Natural Science Foundation of China(32370386,32070372,and 32200295)Science Foundation for Distinguished Young Scholars of Shaanxi Province(2023-JC-JQ-22)+4 种基金Basic Research Project of Shaanxi Academy of Fundamental Science(22JHZ005)Shaanxi Key Research and Development Program(2024NC-YBXM-064)Science and Technology Program of Shaanxi Academy of Science(2023K-49,2023K-26,and 2019K-06)Shaanxi Forestry Science and Technology Innovation Key Project(SXLK2023-02-20)Qinling Hundred Talents Project of Shaanxi Academy of Science(Y23Z619F17).
文摘Intraspecific genetic variance and gene flow can support the adaptive evolution of species challenged by climate shifts or novel environmental conditions.Less well understood is how genome organization and gene flow interact in closely related species during evolutionary divergence and differentiation.Here we conducted genomic footprint analyses to determine how three species of Pterocarya(P.stenoptera,P.hupehensis,and P.macroptera),which are sympatric but occupy different elevational niches,adapted to the heterogeneous environment of the Qinling-Daba Mountains,China.We identified candidate genes for environmental adaptation(i.e.,PIEZO1,WRKY39,VDAC3,CBL1,and RAF),and also identified regions of gene introgression between P.hupehensis and P.macroptera that show lower genetic load and higher genetic diversity than the rest of their genomes.The same introgressed regions are notably situated in areas of minimal genetic divergence yet they are characterized by elevated recombination rates.We also identified candidate genes within these introgressed regions related to environmental adaptation(TPLC2,CYCH;1,LUH,bHLH112,GLX1,TLP-3,and ABC1).Our findings have thus clarified the important role of gene flow in ecological adaptation and revealed genomic signatures of past introgression.Together,these findings provide a stronger theoretical basis for understanding the ecological adaptation and conservation of Quaternary relict woody plants in East Asia.
基金The National Natural Science Foundation of China under contract Nos 32270219 and 31970216.
文摘Invasive macroalgae are recognized as one of the greatest threats to local marine ecology and economy.Chaetomorpha valida is an invasive species in China,originally found in Dalian City,Liaoning Province,and has now invaded southward to seas such as Rongcheng City,Shandong Province.Its overgrowth has seriously damaged the local mariculture industry.Based on two strains of C.valida isolated in our previous study,this study explores the effects of temperature and irradiance on their growth and reproduction under laboratory conditions.The results show that the suitable temperature ranges are primarily 21−29℃.The optimal temperature is 25℃for gametophytic growth and sporophytic asexual reproduction,and 29℃for sporophytic growth and gametophytic sexual reproduction.And there is no significant effect of irradiance on their growth and reproduction.Meanwhile,the suitable temperature ranges and optimum irradiance for the growth and reproduction of both strains are largely similar,with only slight differences in the suitable ones for sporophytic asexual reproduction and gametophytic growth.Accordingly,the effect of temperature on the isomorphic generation alternation in C.valida was analyzed,as well as the dynamics of its generation alternation and invasive potential for its environmental adaptation in the northern and southern seas of China.This will help to understand its dynamic pattern spreading from the north to south in China,and also be an important reference for understanding the generation alternation characteristics,invasions and prevention of the outbreaks of other green tidal algae.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11174249 and 61475139)the National High Technology Research and Development Program of China(Grant No.2011AA060504)+1 种基金the National Basic Research Program of China(Grant No.2013CB329501)the Fundamental Research Funds for the Central Universities,China(Grant No.2016FZA3004)
文摘The cold atom gravimeter offers the prospect of a new generation of inertial sensors for field applications. We ac- complish a mobile atom gravimeter. With the compact and stable system, a sensitivity of 1.4× 10-7 g.Hz-1/2 is achieved. Moreover, a continuous gravity monitoring of 80 h is carried out. However, the harsh outdoor environment is a big challenge for the atom gravimeter when it is for field applications. In this paper, we present the preliminary investigation of the thermal adaptability for our mobile cold atom gravimeter. Here, we focus on the influence of the air temperature on the performance of the atom gravimeter. The responses to different factors （such as laser power, fiber coupling efficiency, etc.） are evaluated when there is a great temperature shift of 10 ℃. The result is that the performances of all the factors deteriorate to different extent, nevertheless, they can easily recover as the temperature comes back. Finally, we conclude that the variation of air temperature induces the increase of noise and the system error of the atom gravimeter as well, while the process is reversible with the recovery of the temperature.
基金the startup fund of the Ohio State University(OSU)OSU Sustainability Institute Seed Grant+2 种基金OSU Institute for Materials Research Kickstart Facility Grantthe National Natural Science Foundation of China(No.31971740)the Science and technology project of Jiangsu Province(BE2018391).
文摘Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives,the ubiquitous use of electronics comes at the expense of increased exposure to electromagnetic(EM)radiation.Up to date,extensive efforts have been made to develop high-performance EM absorbers based on synthetic materials.However,the design of an EM absorber with both exceptional EM dissipation ability and good environmental adaptability remains a substantial challenge.Here,we report the design of a class of carbon heterostructures via hierarchical assembly of graphitized lignocellulose derived from bamboo.Specifically,the assemblies of nanofibers and nanosheets behave as a nanometer-sized antenna,which results in an enhancement of the conductive loss.In addition,we show that the composition of cellulose and lignin in the precursor significantly influences the shape of the assembly and the formation of covalent bonds,which affect the dielectric response-ability and the surface hydrophobicity(the apparent contact angle of water can reach 135°).Finally,we demonstrate that the obtained carbon heterostructure maintains its wideband EM absorption with an effective absorption frequency ranging from 12.5 to 16.7 GHz under conditions that simulate the real-world environment,including exposure to rainwater with slightly acidic/alkaline pH values.Overall,the advances reported in this work provide new design principles for the synthesis of high-performance EM absorbers that can find practical applications in real-world environments.
基金The National Natural Science Foundation of China under contract Nos 31400186 and 31670199the Scientific Research Plan of Tianjin Municipal Education Committee under contract No.JW1705the Research Fund for Talented Scholars of Tianjin Normal University(2016)
文摘Based on specimens collected in Yinggehai, Hainan, China from 2013 to 2016, a stable epiphytic taxon is found on the surface of the individual of marine green alga Cladophora aokii Yamada. According to the morphological characteristics, the taxonomy of Cl. aokii and its epiphytes is carried out. There are some epiphytes attached on Cl. aokii Yamada including Cl. fascicularis （Mertens ex C. Agardh） Kfitzing, Chaetomorpha pachynerna （Montagne） Kiitzing, Cerarniurn carnouii Dawson, Licmophora abbreviata Agardh, Lyngbya sp. and Chattonella sp.. The formation of the individual of Cl. aokii is dissected and explained, which can help to analyze the adaption in details among this species, its epiphytes and native marine environment. The results reveal the marine macroepiphytic taxonomy in Ha/nan, China, and preliminarily explain the adaptive relationship between macroalgae and environment.
基金Supported by the Guangdong Province Basic and Applied Basic Research Fund Project(No.2020A1515110826)the National Natural Science Foundation of China(No.42006115)the Major Scientific and Technological Projects of Hainan Province(No.ZDKJ2021036)。
文摘Manganese superoxide dismutase(MnSOD)is an antioxidant that exists in mitochondria and can effectively remove superoxide anions in mitochondria.In a dark,high-pressure,and low-temperature deep-sea environment,MnSOD is essential for the survival of sea cucumbers.Six MnSODs were identified from the transcriptomes of deep and shallow-sea sea cucumbers.To explore their environmental adaptation mechanism,we conducted environmental selection pressure analysis through the branching site model of PAML software.We obtained night positive selection sites,and two of them were significant(97F→H,134K→V):97F→H located in a highly conservative characteristic sequence,and its polarity c hange might have a great impact on the function of MnSOD;134K→V had a change in piezophilic a bility,which might help MnSOD adapt to the environment of high hydrostatic pressure in the deepsea.To further study the effect of these two positive selection sites on MnSOD,we predicted the point mutations of F97H and K134V on shallow-sea sea cucumber by using MAESTROweb and PyMOL.Results show that 97F→H,134K→V might improve MnSOD’s efficiency of scavenging superoxide a nion and its ability to resist high hydrostatic pressure by moderately reducing its stability.The above results indicated that MnSODs of deep-sea sea cucumber adapted to deep-sea environments through their amino acid changes in polarity,piezophilic behavior,and local stability.This study revealed the correlation between MnSOD and extreme environment,and will help improve our understanding of the organism’s adaptation mechanisms in deep sea.
基金the financial support from Guangdong Basic and Applied Basic Research Foundation(Grant No.2025A1515012077)National Natural Science Foundation of China(No.52401296)+3 种基金the financial support by Guangdong Provincial Pearl River Talents Program(Grant No.2023CX10L019)Bureau of Science and Technology of Jiangmen Municipality(Grant No.2320002001062)And this work is also partly supported by Guangdong S&T Programme(No.2022B1212040001)Guangdong-Hong Kong-Macao joint Laboratory(No.2023B1212120003).
文摘Aqueous zinc-ion batteries are promising candidates as stationary storage systems for power-grid applications due to their high safety and low cost.The practical implementation of Zn-ion batteries currently still faces formidable challenges because of Zn dendrite growth,hydrogen evolution,and inadequate environmental adaptability.Herein,to address these challenges,a strategy of regulation of water molecules coordination in electrolyte is proposed via developing a cross-linked hydrophilic hydrogel polymer electrolyte.Within this system,the continuous hydrogen bond among H_(2)O molecules is disrupted and the isolated H_(2)O molecules are strongly bound with a polymeric matrix comprised of polyacrylamide,carboxymethyl cellulose,and ethylene glycol,which can restrain the activity of H_(2)O molecules,thus effectively alleviating Zn dendrite growth and hydrogen evolution and enhancing the anti-freezing ability.With this electrolyte,the Zn||Cu cell presents a high coulombic efficiency of 99.4%over 900 cycles and Zn||Zn symmetric cell exhibits high cycling stability,maintaining plating/stripping for over 1,700 h.Moreover,the assembled Zn||PANI device also demonstrates outstanding electrochemical performance over a wide-temperature range,including a long cycling life over 14,120 cycles at room temperature and an ultralong cycling surpassing 30,000 cycles even at−40℃.This showcases the manipulation of water coordination chemistry for advanced,highly adaptable batteries.
基金the National Science Foundation for Young Scientists of China(32201780)the Fundamental Research Fund for the Central Universities(77000–12240011)+2 种基金Shenzhen Postdoctoral Funding Project(szbo202410)the National Natural Science Foundation of China(32241045 and 32241038)the National Key Research and Development Program of China(2022YFD1500503,2023YFD1200700,and 2023YFD1200704).
文摘Sorghum,renowned for its substantial biomass production and remarkable tolerance to various stresses,possesses extensive gene resources and phenotypic variations.A comprehensive understanding of the genetic basis underlying complex agronomic traits is essential for unlocking the potential of sorghum in addressing food and feed security and utilizing marginal lands.In this context,we provide an overview of the major trends in genomic resource studies focusing on key agronomic traits over the past decade,accompanied by a summary of functional genomic platforms.We also delve into the molecular functions and regulatory networks of impactful genes for important agricultural traits.Lastly,we discuss and synthesize the current challenges and prospects for advancing molecular design breeding by gene-editing and polymerization of the excellent alleles,with the aim of accelerating the development of desired sorghum varieties.
基金supported by the Key Research and Development Project of Henan Province,China(221111112200)the National Natural Science Foundation of China(32070502 and 32072419)+1 种基金the Fundamental Research Program of Shanxi Province,China(202303021224005)the Natural Science Foundation of Henan Province,China(232300420185).
文摘CRISPR/Cas9-based gene editing research has advanced greatly and shows broad potential for practical application in life sciences,but the Cas9 system is often constrained by the requirement of a protospacer adjacent motif(PAM)at the target site.While xCas9,a variant derived from Streptococcus pyogenes Cas9(SpCas9),can recognize a broader range of PAMs,its application in non-model insects is lacking.In this study,we explored xCas9 activity in gene editing by selecting corazonin(Crz)and the target sites with various PAMs in Locusta migratoria,a destructive insect pest worldwide.We found that xCas9 could cleave the target site with AG PAM while SpCas9 could not,although xCas9 appeared to have lower activity than SpCas9 at the canonical NGG PAMs.The heritable homozygous Crz^(-/-)locust strain was generated by the application of xCas9.The Crz^(-/-)strain showed an albino body color,with significantly downregulated expression of several body color-related genes including Pale,Vermilion,Cinnabar,White andβ-carotene-binding protein.In addition,Crz^(-/-)mutants exhibited significantly reduced expression of Chitin synthase 1,along with a markedly lower chitin content as well as compact and rigid cuticles.Furthermore,Crz^(-/-)mutants displayed impaired performance under low-temperature stress,including prolonged lifespan,reduced body weight and smaller body size.Our results suggest that xCas9 is effective for insect genome editing,and Crz plays essential roles in insect body color,cuticle development and adaptation to low-temperature stress.The findings of this study extend the application of xCas9 in non-model insects and provide new insights into our understanding of the regulation of insect cuticle development and environmental adaptation.
基金National Natural Science Foundation of China,No.42471185,No.T2192952National Key Research and Development Program of China,No.2022YFF0801502。
文摘The paleoenvironmental changes and adaptation strategies of hominins during the Late Pleistocene are crucial for understanding the evolution,dispersal,and behavioral shifts of early modern humans.Despite South China's significance as a nexus for hominin dispersal and handaxe technology diffusion,quantitative reconstructions of paleoenvironments linked to archaeological records remain scarce.The Sandinggai site(96.6-13.3 ka BP)in central South China,with its well-preserved stratigraphy and abundant lithic artefacts,is notable for providing valuable insights.In this study,quantitative reconstruction of the vegetation succession and climate change sequences at the site was conducted using palynological and isotopic data.The results indicated a shift from a warm-temperate evergreen and deciduous broadleaf mixed forest to a temperate deciduous broadleaf forest,with the climate transitioning from warm and humid to cooler and drier conditions.During the early phase,an increase in lithic production suggested favorable conditions for hominin survival.In the later phase,decreased lithic production and the replacement of large handaxe tools by smaller flake tools,indicated that hominins adapted to the cooler,drier climate and more open landscapes through lithic miniaturization.These findings highlight the environment-driven adaptation of lithic technology and hominin behavior,thereby shedding light on human survival adaptation strategies.
