The application of intelligent disinfection robot in designated non-negative pressure isolation ward during the outbreak in novel coronavirus pneumonia. The construction and competition, disinfection mode of intellige...The application of intelligent disinfection robot in designated non-negative pressure isolation ward during the outbreak in novel coronavirus pneumonia. The construction and competition, disinfection mode of intelligent disinfection robot, the setting of disinfection point built on area and number of isolation ward, can be introduced below. Frequency can realize remote control when staff uses a table to give instruction and set disinfection mode, and then the intelligent disinfection robot returns automatically to the charging pile to charge when the instruction is completed. It can also autonomously move to sterilize without human participation, which makes man-machine separation and accurate disinfection come true. The chance of contact infection and exposure is decreased when an intelligent disinfection robot is used to sterilize the environment and object surface in an isolation ward, which can also reduce occupational exposure, achieve occupational protection of medical workers and ensure there is no hospital infection.展开更多
With the explosive spread of novel coronavirus pneumonia, a major public major public health emergency has been declared around the world. Our country has come to a crucial stage of “external defense input, internal ...With the explosive spread of novel coronavirus pneumonia, a major public major public health emergency has been declared around the world. Our country has come to a crucial stage of “external defense input, internal defense rebound” and strict quarantine measures are taken in all ports of entry throughout the country. Operations on patients with cervical spine during the quarantine, which not only increases the risk of surgical treatment, but also increases the difficulty of perioperative nursing. The objective is to explore the result of application of the modality of multiple disciplinary team for a perioperative patient with suspected novel coronavirus pneumonia and cervical spine fracture in nursing. The patient’s condition and nursing measures are studied and discussed from various specialist angle through the multidisciplinary team established by the isolation ward, orthopedics department, emergency department, anesthesiology department, operating room, rehabilitation department, psychology department and so on, and the overall and personalized surgical and nursing planning is formed through interdisciplinary advice. The nursing experience is summarized in this paper.展开更多
New coronavirus pneumonia spread rapidly all over the world in the first half of 2020, which is a new respiratory disease with strong infectiousness. At present, the epidemic situation in China has been effectively co...New coronavirus pneumonia spread rapidly all over the world in the first half of 2020, which is a new respiratory disease with strong infectiousness. At present, the epidemic situation in China has been effectively controlled, but the global epidemic situation remains grim, and the National Health Commission has instructed that the prevention and control of new coronavirus pneumonia should become normalized. As outposts for surveillance of public health events, hospitals are an important front in the fight against the epidemic. Therefore, it is very crucial to construct infection prevention and control system actively to contain the outbreak. This paper analyzes and summarizes the normal prevention and control management strategy of Infection Control Branch Management (hereinafter referred to as Hospital Infection-Control Dept) in a certain designated comprehensive third-grade hospital in Guangdong Province and transforms the prevention and control means in emergency state into measures for sustainable development, which also provides basis and reference for Hospital Infection-Control Dept of medical institutions to formulate prevention and control guidelines.展开更多
Agroforestry ecosystems are constructed by simulating natural ecosystems, applying the principles of symbiosis in nature, and organizing multiple plant populations to coexist, while conducting targeted cultivation and...Agroforestry ecosystems are constructed by simulating natural ecosystems, applying the principles of symbiosis in nature, and organizing multiple plant populations to coexist, while conducting targeted cultivation and structural control scientifically. Rubber agroforestry complex ecosystems aim for sustainable development in terms of industry, ecology, resource utilization, and the livelihoods of producers. Rubber agroforestry complex ecosystems create a complex production structure system that integrates biology, society, and the economy through species combinations. Rubber trees and associated biological components coordinate with each other, mutually promote growth, and yield a variety of products for producers. Cultivation techniques and patterns of rubber agroforestry are essential components of these ecosystems. This study analyzes the production practices of rubber agroforestry complex cultivation, with a focus on the development and characteristics (complexity, systematicity, intensity, and hierarchy) of rubber agroforestry systems using a literature analysis and a survey approach. It explores the types and scales of complex planting, specifications and forms, and major effects of complex cultivation. This study identifies successful rubber agroforestry cultivation patterns and practical techniques, as well as the potential benefits of developing rubber agroforestry cultivation. It also points out the shortcomings in the development of complex planting, including an emphasis on production practices but insufficient theoretical research, a focus on production but inadequate attention to the market, and an emphasis on yield while overlooking the improvement of standards, brands, and added value. There are various complex patterns for young rubber plantations, but relatively fewer for mature plantations. Based on this analysis, this study suggests that future efforts should focus on in-depth research on interspecies and environmental interactions in rubber agroforestry ecosystems, clearly define key roles, accelerate the innovation of development patterns, and strengthen the foundation for development. It recommends promoting and demonstrating successful rubber agroforestry complex patterns and providing technical training, developing product branding for rubber agroforestry patterns, enhancing product value, expanding the application functions of rubber-forest mixed crop products, and establishing a stable and sustainable industry chain. This study provide practical experience and theoretical insights in rubber agroforestry complex systems from China the potential to enrich the knowledge of rubber agroforestry composite systems, provide practical experience to improve the operating income of smallholders, and even promote the sustainable development of rubber plantations.展开更多
Pulmonary embolism(PE)can range from minor,asymptomatic blood clots to life-threatening emboli capable of obstructing pulmonary arteries,potentially leading to cardiac arrest and fatal outcomes.Due to this significant...Pulmonary embolism(PE)can range from minor,asymptomatic blood clots to life-threatening emboli capable of obstructing pulmonary arteries,potentially leading to cardiac arrest and fatal outcomes.Due to this significant mortality risk,risk stratification is essential following PE diagnosis to guide appropriate therapeutic intervention.This study proposes a machine learning-based methodology for PE risk stratification,utilizing clinical data from a cohort of 139 patients.The predictive framework integrates an enhanced binary Honey Badger Algorithm(BCCHBA)with the K-Nearest Neighbor(KNN)classifier.To comprehensively evaluate the performance of the core optimization algorithm(CCHBA),a series of benchmark function tests were conducted.Furthermore,diagnostic validation tests were performed using real-world PE patient data collected from medical facilities,demonstrating the clinical significance and practical utility of the BCCHBA-KNN system.Analysis revealed the critical importance of specific indicators,including neutrophil percentage(NEUT%),systolic blood pressure(SBP),oxygen saturation(SaO2%),white blood cell count(WBC),and syncope.The classification results demonstrated exceptional performance,with the prediction model achieving 100%sensitivity and 99.09%accuracy.This approach holds promise as a novel and accurate method for assessing PE severity.展开更多
On December 18,2023,a Mw6.1 earthquake struck Jishishan County,Gansu Province,China,marking the most significant earthquake in the northeastern edge of the Tibetan Plateau since 2000.Given its proximate to the Loess P...On December 18,2023,a Mw6.1 earthquake struck Jishishan County,Gansu Province,China,marking the most significant earthquake in the northeastern edge of the Tibetan Plateau since 2000.Given its proximate to the Loess Plateau,which is extremely susceptible to geohazards,this earthquake raises awareness about the seismic hazard of several mega-cities such as Xi'an in Northwest China.In this paper,we inferred that the rupture occurred on an east-dipping backthrust,resulting from the regional E-W contraction tectonic setting.Our dynamic model through teleseismic waves and static model through radar displacement measurements together reveal a unilateral,along-strike rupture,encountering a slip barrier at one side of the main slip patch causing a cluster of aftershocks.We also identified a high-dip structure,which is an early-stage backthrust fault whose dip becomes increasingly high due to regional compressional tectonism.Apart from the loaded fault segments,particularly on the fault linkage,which necessitate continuous examination,a detailed seismic hazard assessment of the west Qinling and Daotanghe-Linxia fault system identifies a seismic gap between Weiyuan and Dingxi with the potential for a Mw7.5 earthquake.Collectively,these findings provide valuable insights into the seismic behavior of the seismogenic fault as well as guidance on hazard mitigation in its surrounding fault systems.展开更多
The widespread production and use of plastic products have highlighted the ecological risks of microplastics(MPs).MPs,mainly as microfibers(MFs),can carry various pollutants,and their properties may change over time,p...The widespread production and use of plastic products have highlighted the ecological risks of microplastics(MPs).MPs,mainly as microfibers(MFs),can carry various pollutants,and their properties may change over time,potentially affecting their interactions with pollutants.This study aims to compare the combined toxicity effects of virgin and aged MFs with the common heavy metal copper(Cu).Gibel carp Carassius auratus gibelio were exposed to 1 mg/L of virgin and aged polyacrylonitrile MFs(PanMfs)separately and in combination with Cu(0.5-mg/L copper sulfate)for 21 d.Results show that both aged and virgin PanMfs significantly reduced Cu accumulation in gibel carp,with no notable difference.Cu adversely affected the carp's intestine and liver,while PanMfs alone had minimal histological impact but notably mitigated intestinal damage caused by Cu.Enzyme activity and gene expression analysis indicated that both PanMfs and Cu exposure,alone or combined,compromised gibel carp's antioxidant capacity,digestive and liver functions,induced inflammation,and affected liver metabolism and intestinal immune response.Integrated biomarker response analysis of enzyme activity and gene expression showed that combined Cu and PanMfs exposure had a stronger impact on gibel carp than individual exposure.However,whether exposed individually or in combination,aged PanMfs had a slightly greater impact than virgin PanMfs.This study showed that PanMfs alone exhibit minimal toxic effects on gibel carp but significantly modify Cu toxicity,with negligible differences between aged and virgin PanMfs except for slight disparities in enzyme activity and gene expression.展开更多
Flexible and wearable electronics are attracting surging attention due to their potential applications in human health monitoring and precision therapies.Safety hazards including strong magnetic field and electric lea...Flexible and wearable electronics are attracting surging attention due to their potential applications in human health monitoring and precision therapies.Safety hazards including strong magnetic field and electric leakage are big risk factors for human health.It remains challenging to develop self‐powered and wearable safety hazard sensors that could not only be able to monitor human motions but also have functions for detecting potential hazards.In this work,we fabricated a self‐powered,shapeable,and wearable magnetic triboelectric nanogenerator(MTENG)based on ferrofluid,Ecoflex,and carbonized silk fabric that possessed effective hazard prevention and biomechanical motion sensing ability.A peak open‐circuit voltage of 0.7 V and short‐circuit current of 10μA m^(−2)can be achieved when magnetic field is changed between 3.5 and 37.1 mT.As a component of triboelectric layer of the MTENG,ferrofluid can substantially extend the range of its sensing capabilities to many hazardous cues such as dangerous magnetic field.Furtherly,the developed multifunctional and self‐powered sensor can be used to monitor human activities such as drinking water and bending finger.This effort opens up a new design opportunity for hazard avoidance wearable electronics and self‐powered sensors.展开更多
Evaluating plant stress tolerance and screening key regulatory genes under the combined stresses of high temperature and drought are important for studying plant stress tolerance mechanisms. In this study, the drought...Evaluating plant stress tolerance and screening key regulatory genes under the combined stresses of high temperature and drought are important for studying plant stress tolerance mechanisms. In this study, the drought tolerance of five grape varieties was evaluated under high-temperature conditions to screen key genes for further exploration of resistance mechanisms. By comparing and analysing the morphological characteristics and physiological indicators associated with the response of grapevines to drought stress and integrating them with the membership function to assess the strength of their drought tolerance, the order of drought tolerance was found to be as follows: 420A>110R>Cabernet Sauvignon(CS)>Fercal>188-08. To further analyse the mechanism of differences in drought tolerance, transcriptomic sequencing was performed on the drought-tolerant cultivar 420A, the drought-sensitive cultivar 188-08 and the control cultivar CS. The functional analysis of differential metabolic pathways indicated that the differentially expressed genes were enriched mainly in biological process category, that 420A had higher antioxidant activity. Furthermore, differentially expressed transcription factors were analyzed in five grape varieties. Genes like Vv AGL15, Vv LBD41, and Vv MYB86 showed close associations with drought tolerance,indicating their potential role in regulating drought tolerance and research significance.展开更多
To achieve palm oil conversion along with a high yield of long‐chain alkane,a series of NiFe layered double oxide catalysts were prepared and employed in the deoxygenation of palm oil.The layered structure of these c...To achieve palm oil conversion along with a high yield of long‐chain alkane,a series of NiFe layered double oxide catalysts were prepared and employed in the deoxygenation of palm oil.The layered structure of these catalysts was confirmed by XRD and SEM analyses,and Ni and Fe species existed primarily in the forms of Ni^(2+)and Fe^(3+),respectively.It was found that Ni/Fe molar ratio influenced the H_(2)reducibility and surface properties of NiFe catalysts.Specifically,Ni_(2)Fe‐LDO and Ni_(3)Fe‐LDO exhibited higher reducibility under H_(2)atmosphere.Moreover,the Ni_(2)Fe‐LDO catalyst contained a higher concentration of surface oxygen species(Osurf).Deoxygenation results demonstrated that the Ni_(2)Fe‐LDO catalyst achieved superior palm oil conversion,higher liquid product yield and enhanced selectivity toward C_(15)–C_(18)hydrocarbons compared to other catalysts.This improved performance was attributed to its higher hydrogen dissociation activity and enhanced adsorption capacity for palm oil molecules.Furthermore,reaction condition studies revealed that palm oil was completely converted,yielding 86.8%liquid product with 81.8%selectivity of C_(15)–C_(18)hydrocarbons at 350℃under 7 MPa H_(2)pressure.This finding provides an insight into the development of efficient catalysts for the deoxygenation of fatty compounds to biofuels.展开更多
As a renowned historical and cultural city,Luoyang boasts a wealth of tourism resources,including sports venues,natural landscapes,and cultural heritage sites,laying a solid foundation for the integrated development o...As a renowned historical and cultural city,Luoyang boasts a wealth of tourism resources,including sports venues,natural landscapes,and cultural heritage sites,laying a solid foundation for the integrated development of the tourism industry and sports events in recent years,with remarkable achievements in practice.However,from the perspective of sports-tourism integration,Luoyang’s event tourism still faces a prominent issue of uneven development:a surge in tourists during peak seasons,leading to overcrowded attractions,and a scarcity of visitors during off-peak seasons,resulting in idle resources.This not only leads to inefficient resource utilization but also restricts the enhancement of economic benefits and hinders sustainable development.In light of this,this paper comprehensively employs literature research,case analysis,and fieldwork methods to systematically analyze the current development status of event tourism in Luoyang within the context of sports-tourism integration.The aim is to provide theoretical and practical support for achieving high-quality and balanced development of local event tourism,offering valuable references for addressing the issue of uneven development and moving towards a sustainable future.展开更多
Monitoring the evolution of foreshocks can be a valuable way to analyze the nucleation process.Foreshocks accompanying moderate mainshocks have been recorded in the west of Yunnan Province,China.We obtain the earthqua...Monitoring the evolution of foreshocks can be a valuable way to analyze the nucleation process.Foreshocks accompanying moderate mainshocks have been recorded in the west of Yunnan Province,China.We obtain the earthquake catalog and source parameters of the 2016 Yunlong foreshocks,and discuss the implications for the nucleation processes of the earthquake in western Yunnan,China.By using the matched filter detection,we identify 343 foreshocks with a magnitude of -0.8-4.5,starting with a magnitude 1.0 foreshock approximately 3 months before the 2016 M_(S)5.1 Yunlong mainshock.The spatial distribution of foreshocks doesn’t show localization or directional migration towards the mainshock.Coulomb stress analysis suggests a positive stress perturbation at the mainshock nucleate area.These observations indicate a cascade-triggering mechanism of the 2016 Yunlong earthquakes.We further collect published catalogs of 2021 Yangbi and 2017 Yangbi foreshocks in the adjacent area,and analyze the temporal changes in b values.The temporal changes in b values reveal precursory drops before the mainshocks.展开更多
Rubber agroforestry systems positively impact soil microbial communities. This study employed a bibliometric approach to explore the research status, hotspots, and development trends related to these effects. Using Ci...Rubber agroforestry systems positively impact soil microbial communities. This study employed a bibliometric approach to explore the research status, hotspots, and development trends related to these effects. Using CiteSpace software, we visually analyzed research literature from the Web of Science (WOS) core database, spanning 2004 to 2024. The focus was on the impact of rubber agroforestry ecosystems on soil microbial communities. The results indicate significant attention from Chinese researchers, who have published numerous influential papers in this field. Authors Liu Wenjie have contributed the most papers, although no stable core author group exists. The Chinese Academy of Sciences is the leading research institution in terms of publication volume. While there is close collaboration between different institutions and countries, the intensity of researcher cooperation is low. The most cited literature emphasizes soil nutrients and structure in rubber agroforestry, laying a foundation for soil microorganism studies. Most cited journals are from countries like Netherlands and the United Kingdom. Key research areas include the effects of rubber intercropping on soil microbial communities, agroforestry management, and soil health. Research development can be divided into three stages: the initial stage (2010-2015), the development stage (2015-2020), and the mature stage (2020-2024). Current studies show that rubber intercropping and rubber-based agroforestry systems enhance soil microbial communities, positively impacting soil health. This paper provides a theoretical basis for the sustainable development of rubber agroforestry systems and improved management plans. Future research could explore the effects of species composition on soil microbiological characteristics and develop methods for species interactions. An in-depth study of the soil microbial community’s structure and function, and its relationship with rubber trees, is crucial. Developing effective, rationally designed rubber agroforestry systems and underground soil microbiome technology will promote sustainability and improve plantation productivity.展开更多
Rubber trees (Hevea brasiliensis Müll. Arg.) have been commercially cultivated for a century and a half in Asia, particularly in China, and they constitute a common element of plantation ecosystems in tropical re...Rubber trees (Hevea brasiliensis Müll. Arg.) have been commercially cultivated for a century and a half in Asia, particularly in China, and they constitute a common element of plantation ecosystems in tropical regions. Soil health is fundamental to the sustainable development of rubber plantations. The objective of the study is to explore the influence of different complex ecological cultivation modes on the stability of soil aggregates in rubber based agroforestry systems. In this study, the ecological cultivation mode of rubber—Alpinia oxyphylla plantation, the ecological cultivation mode of rubber—Phrynium hainanense plantations, the ecological cultivation mode of rubber—Homalium ceylanicum plantations and monoculture rubber plantations were selected, and the particle size distribution of soil aggregates and their water stability characteristics were analyzed. The soil depth of 0 - 20 cm and 20 - 40 cm was collected for four cultivation modes. Soil was divided into 6 particle levels > 20 cm. soil was divided into 6 particle levels > 5 mm, 2 - 5 mm, 1 - 2 mm, 0.5 - 1 mm, 0.25 - 0.5 mm, and 0.053 - 0.25 mm according to the wet sieve method. The particle size proportion and water stability of soil aggregates were determined by the wet sieve method. The particle size proportion and water stability of soil aggregates under different ecological cultivation modes were analyzed. The results showed that under different ecological cultivation modes in the shallow soil layer (0 - 20 cm), the rubber—Alpinia oxyphylla plantation and the rubber—Phrynium hainanense plantation promoted the development of dominant soil aggregates towards larger size classes, whereas the situation is the opposite for rubber—Homalium ceylanicum plantation. In soil layer (20 - 40 cm), the ecological cultivation mode of rubber—Phrynium hainanense plantation developed the dominant radial level of soil aggregates to the diameter level of large aggregates. Rubber—Alpinia oxyphylla plantation and rubber—Homalium ceylanicum plantation, three indicators, including the water-stable aggregate content R<sub>0.25</sub> (>0.25 mm water-stable aggregates), mean weight diameter (MWD), and geometric mean diameter (GMD), were all lower than those in the rubber monoculture mode. However, in the rubber—Phrynium hainanense plantation, the water-stable aggregate content R<sub>0.25</sub>, mean weight diameter, and geometric mean diameter were higher than in the rubber monoculture mode, although these differences did not reach statistical significance.展开更多
A transient delay-coupled network was proposed by modifying the standard delay-coupled network with a transient coupling technique to enlarge the synchronization domain of the network, where the synchronization domain...A transient delay-coupled network was proposed by modifying the standard delay-coupled network with a transient coupling technique to enlarge the synchronization domain of the network, where the synchronization domain is the interval of the coupling strength for which the network gets synchronized. The coupling of the transient delay-coupled network is activated when the systems are in a particular region (coupling region) of the phase space and inactivated otherwise, which is different from the standard coupling. The specific synchronization performance of the transient delay-coupled network was investigated through case studies. The relationships between the synchronization domain and the coupling region were obtained by gauging the synchronization index. It is understood that the synchronization domain changes in a non-smooth manner with the variation of the coupling region. In particular, the synchronization domain of a transient delay-coupled network is much larger than that of the standard delay-coupled network when the coupling region is appropriately determined.展开更多
文摘The application of intelligent disinfection robot in designated non-negative pressure isolation ward during the outbreak in novel coronavirus pneumonia. The construction and competition, disinfection mode of intelligent disinfection robot, the setting of disinfection point built on area and number of isolation ward, can be introduced below. Frequency can realize remote control when staff uses a table to give instruction and set disinfection mode, and then the intelligent disinfection robot returns automatically to the charging pile to charge when the instruction is completed. It can also autonomously move to sterilize without human participation, which makes man-machine separation and accurate disinfection come true. The chance of contact infection and exposure is decreased when an intelligent disinfection robot is used to sterilize the environment and object surface in an isolation ward, which can also reduce occupational exposure, achieve occupational protection of medical workers and ensure there is no hospital infection.
文摘With the explosive spread of novel coronavirus pneumonia, a major public major public health emergency has been declared around the world. Our country has come to a crucial stage of “external defense input, internal defense rebound” and strict quarantine measures are taken in all ports of entry throughout the country. Operations on patients with cervical spine during the quarantine, which not only increases the risk of surgical treatment, but also increases the difficulty of perioperative nursing. The objective is to explore the result of application of the modality of multiple disciplinary team for a perioperative patient with suspected novel coronavirus pneumonia and cervical spine fracture in nursing. The patient’s condition and nursing measures are studied and discussed from various specialist angle through the multidisciplinary team established by the isolation ward, orthopedics department, emergency department, anesthesiology department, operating room, rehabilitation department, psychology department and so on, and the overall and personalized surgical and nursing planning is formed through interdisciplinary advice. The nursing experience is summarized in this paper.
文摘New coronavirus pneumonia spread rapidly all over the world in the first half of 2020, which is a new respiratory disease with strong infectiousness. At present, the epidemic situation in China has been effectively controlled, but the global epidemic situation remains grim, and the National Health Commission has instructed that the prevention and control of new coronavirus pneumonia should become normalized. As outposts for surveillance of public health events, hospitals are an important front in the fight against the epidemic. Therefore, it is very crucial to construct infection prevention and control system actively to contain the outbreak. This paper analyzes and summarizes the normal prevention and control management strategy of Infection Control Branch Management (hereinafter referred to as Hospital Infection-Control Dept) in a certain designated comprehensive third-grade hospital in Guangdong Province and transforms the prevention and control means in emergency state into measures for sustainable development, which also provides basis and reference for Hospital Infection-Control Dept of medical institutions to formulate prevention and control guidelines.
文摘Agroforestry ecosystems are constructed by simulating natural ecosystems, applying the principles of symbiosis in nature, and organizing multiple plant populations to coexist, while conducting targeted cultivation and structural control scientifically. Rubber agroforestry complex ecosystems aim for sustainable development in terms of industry, ecology, resource utilization, and the livelihoods of producers. Rubber agroforestry complex ecosystems create a complex production structure system that integrates biology, society, and the economy through species combinations. Rubber trees and associated biological components coordinate with each other, mutually promote growth, and yield a variety of products for producers. Cultivation techniques and patterns of rubber agroforestry are essential components of these ecosystems. This study analyzes the production practices of rubber agroforestry complex cultivation, with a focus on the development and characteristics (complexity, systematicity, intensity, and hierarchy) of rubber agroforestry systems using a literature analysis and a survey approach. It explores the types and scales of complex planting, specifications and forms, and major effects of complex cultivation. This study identifies successful rubber agroforestry cultivation patterns and practical techniques, as well as the potential benefits of developing rubber agroforestry cultivation. It also points out the shortcomings in the development of complex planting, including an emphasis on production practices but insufficient theoretical research, a focus on production but inadequate attention to the market, and an emphasis on yield while overlooking the improvement of standards, brands, and added value. There are various complex patterns for young rubber plantations, but relatively fewer for mature plantations. Based on this analysis, this study suggests that future efforts should focus on in-depth research on interspecies and environmental interactions in rubber agroforestry ecosystems, clearly define key roles, accelerate the innovation of development patterns, and strengthen the foundation for development. It recommends promoting and demonstrating successful rubber agroforestry complex patterns and providing technical training, developing product branding for rubber agroforestry patterns, enhancing product value, expanding the application functions of rubber-forest mixed crop products, and establishing a stable and sustainable industry chain. This study provide practical experience and theoretical insights in rubber agroforestry complex systems from China the potential to enrich the knowledge of rubber agroforestry composite systems, provide practical experience to improve the operating income of smallholders, and even promote the sustainable development of rubber plantations.
文摘Pulmonary embolism(PE)can range from minor,asymptomatic blood clots to life-threatening emboli capable of obstructing pulmonary arteries,potentially leading to cardiac arrest and fatal outcomes.Due to this significant mortality risk,risk stratification is essential following PE diagnosis to guide appropriate therapeutic intervention.This study proposes a machine learning-based methodology for PE risk stratification,utilizing clinical data from a cohort of 139 patients.The predictive framework integrates an enhanced binary Honey Badger Algorithm(BCCHBA)with the K-Nearest Neighbor(KNN)classifier.To comprehensively evaluate the performance of the core optimization algorithm(CCHBA),a series of benchmark function tests were conducted.Furthermore,diagnostic validation tests were performed using real-world PE patient data collected from medical facilities,demonstrating the clinical significance and practical utility of the BCCHBA-KNN system.Analysis revealed the critical importance of specific indicators,including neutrophil percentage(NEUT%),systolic blood pressure(SBP),oxygen saturation(SaO2%),white blood cell count(WBC),and syncope.The classification results demonstrated exceptional performance,with the prediction model achieving 100%sensitivity and 99.09%accuracy.This approach holds promise as a novel and accurate method for assessing PE severity.
基金funded by the National Natural Science Foundation of China(No.42377159)the Shaanxi Province Science and Technology Innovation Team(No.2021TD-51)+1 种基金the Shaanxi Province Geoscience Big Data and Geohazard Prevention Innovation Team(2022)the Fundamental Research Funds for the Central Universities,CHD(No.300102263401)。
文摘On December 18,2023,a Mw6.1 earthquake struck Jishishan County,Gansu Province,China,marking the most significant earthquake in the northeastern edge of the Tibetan Plateau since 2000.Given its proximate to the Loess Plateau,which is extremely susceptible to geohazards,this earthquake raises awareness about the seismic hazard of several mega-cities such as Xi'an in Northwest China.In this paper,we inferred that the rupture occurred on an east-dipping backthrust,resulting from the regional E-W contraction tectonic setting.Our dynamic model through teleseismic waves and static model through radar displacement measurements together reveal a unilateral,along-strike rupture,encountering a slip barrier at one side of the main slip patch causing a cluster of aftershocks.We also identified a high-dip structure,which is an early-stage backthrust fault whose dip becomes increasingly high due to regional compressional tectonism.Apart from the loaded fault segments,particularly on the fault linkage,which necessitate continuous examination,a detailed seismic hazard assessment of the west Qinling and Daotanghe-Linxia fault system identifies a seismic gap between Weiyuan and Dingxi with the potential for a Mw7.5 earthquake.Collectively,these findings provide valuable insights into the seismic behavior of the seismogenic fault as well as guidance on hazard mitigation in its surrounding fault systems.
基金Supported by the High-level Talent Program of Yangzhou University to Yingying ZHANG。
文摘The widespread production and use of plastic products have highlighted the ecological risks of microplastics(MPs).MPs,mainly as microfibers(MFs),can carry various pollutants,and their properties may change over time,potentially affecting their interactions with pollutants.This study aims to compare the combined toxicity effects of virgin and aged MFs with the common heavy metal copper(Cu).Gibel carp Carassius auratus gibelio were exposed to 1 mg/L of virgin and aged polyacrylonitrile MFs(PanMfs)separately and in combination with Cu(0.5-mg/L copper sulfate)for 21 d.Results show that both aged and virgin PanMfs significantly reduced Cu accumulation in gibel carp,with no notable difference.Cu adversely affected the carp's intestine and liver,while PanMfs alone had minimal histological impact but notably mitigated intestinal damage caused by Cu.Enzyme activity and gene expression analysis indicated that both PanMfs and Cu exposure,alone or combined,compromised gibel carp's antioxidant capacity,digestive and liver functions,induced inflammation,and affected liver metabolism and intestinal immune response.Integrated biomarker response analysis of enzyme activity and gene expression showed that combined Cu and PanMfs exposure had a stronger impact on gibel carp than individual exposure.However,whether exposed individually or in combination,aged PanMfs had a slightly greater impact than virgin PanMfs.This study showed that PanMfs alone exhibit minimal toxic effects on gibel carp but significantly modify Cu toxicity,with negligible differences between aged and virgin PanMfs except for slight disparities in enzyme activity and gene expression.
基金financially supported by the National Natural Science Foundation of China(No.52125201)Beijing Natural Science Foundation(No.Z240025)and the Beijing Municipal Science and Technology(No.Z221100002722015).
文摘Flexible and wearable electronics are attracting surging attention due to their potential applications in human health monitoring and precision therapies.Safety hazards including strong magnetic field and electric leakage are big risk factors for human health.It remains challenging to develop self‐powered and wearable safety hazard sensors that could not only be able to monitor human motions but also have functions for detecting potential hazards.In this work,we fabricated a self‐powered,shapeable,and wearable magnetic triboelectric nanogenerator(MTENG)based on ferrofluid,Ecoflex,and carbonized silk fabric that possessed effective hazard prevention and biomechanical motion sensing ability.A peak open‐circuit voltage of 0.7 V and short‐circuit current of 10μA m^(−2)can be achieved when magnetic field is changed between 3.5 and 37.1 mT.As a component of triboelectric layer of the MTENG,ferrofluid can substantially extend the range of its sensing capabilities to many hazardous cues such as dangerous magnetic field.Furtherly,the developed multifunctional and self‐powered sensor can be used to monitor human activities such as drinking water and bending finger.This effort opens up a new design opportunity for hazard avoidance wearable electronics and self‐powered sensors.
基金supported by the Major Innovation Project of Shandong Province, China (2022CXGC010605)the National Natural Science Foundation of China (32172518 and 32002023)+1 种基金the National Key R&D Program of China (2023YFD2301103)the Key R&D Projects in Ningxia Hui Autonomous Region, China (2022BBF02014)。
文摘Evaluating plant stress tolerance and screening key regulatory genes under the combined stresses of high temperature and drought are important for studying plant stress tolerance mechanisms. In this study, the drought tolerance of five grape varieties was evaluated under high-temperature conditions to screen key genes for further exploration of resistance mechanisms. By comparing and analysing the morphological characteristics and physiological indicators associated with the response of grapevines to drought stress and integrating them with the membership function to assess the strength of their drought tolerance, the order of drought tolerance was found to be as follows: 420A>110R>Cabernet Sauvignon(CS)>Fercal>188-08. To further analyse the mechanism of differences in drought tolerance, transcriptomic sequencing was performed on the drought-tolerant cultivar 420A, the drought-sensitive cultivar 188-08 and the control cultivar CS. The functional analysis of differential metabolic pathways indicated that the differentially expressed genes were enriched mainly in biological process category, that 420A had higher antioxidant activity. Furthermore, differentially expressed transcription factors were analyzed in five grape varieties. Genes like Vv AGL15, Vv LBD41, and Vv MYB86 showed close associations with drought tolerance,indicating their potential role in regulating drought tolerance and research significance.
基金National Natural Science Foundation of China(22278084)State Key Laboratory of Heavy Oil Processing(SKLHOP202402003)for financing this research.
文摘To achieve palm oil conversion along with a high yield of long‐chain alkane,a series of NiFe layered double oxide catalysts were prepared and employed in the deoxygenation of palm oil.The layered structure of these catalysts was confirmed by XRD and SEM analyses,and Ni and Fe species existed primarily in the forms of Ni^(2+)and Fe^(3+),respectively.It was found that Ni/Fe molar ratio influenced the H_(2)reducibility and surface properties of NiFe catalysts.Specifically,Ni_(2)Fe‐LDO and Ni_(3)Fe‐LDO exhibited higher reducibility under H_(2)atmosphere.Moreover,the Ni_(2)Fe‐LDO catalyst contained a higher concentration of surface oxygen species(Osurf).Deoxygenation results demonstrated that the Ni_(2)Fe‐LDO catalyst achieved superior palm oil conversion,higher liquid product yield and enhanced selectivity toward C_(15)–C_(18)hydrocarbons compared to other catalysts.This improved performance was attributed to its higher hydrogen dissociation activity and enhanced adsorption capacity for palm oil molecules.Furthermore,reaction condition studies revealed that palm oil was completely converted,yielding 86.8%liquid product with 81.8%selectivity of C_(15)–C_(18)hydrocarbons at 350℃under 7 MPa H_(2)pressure.This finding provides an insight into the development of efficient catalysts for the deoxygenation of fatty compounds to biofuels.
文摘As a renowned historical and cultural city,Luoyang boasts a wealth of tourism resources,including sports venues,natural landscapes,and cultural heritage sites,laying a solid foundation for the integrated development of the tourism industry and sports events in recent years,with remarkable achievements in practice.However,from the perspective of sports-tourism integration,Luoyang’s event tourism still faces a prominent issue of uneven development:a surge in tourists during peak seasons,leading to overcrowded attractions,and a scarcity of visitors during off-peak seasons,resulting in idle resources.This not only leads to inefficient resource utilization but also restricts the enhancement of economic benefits and hinders sustainable development.In light of this,this paper comprehensively employs literature research,case analysis,and fieldwork methods to systematically analyze the current development status of event tourism in Luoyang within the context of sports-tourism integration.The aim is to provide theoretical and practical support for achieving high-quality and balanced development of local event tourism,offering valuable references for addressing the issue of uneven development and moving towards a sustainable future.
基金supported by the Laoshan Laboratory project(LSKJ202204100)National Natural Science Foundation of China(Nos.U2344221,92158205,42406064)+2 种基金Hong Kong Research Grant Council Grants(14306122)the Taishan Scholar Foundation of Shandong Province(tstp20230638)Shandong Province Outstanding Youth Science Fund Project Overseas(2023HWYQ-099).
文摘Monitoring the evolution of foreshocks can be a valuable way to analyze the nucleation process.Foreshocks accompanying moderate mainshocks have been recorded in the west of Yunnan Province,China.We obtain the earthquake catalog and source parameters of the 2016 Yunlong foreshocks,and discuss the implications for the nucleation processes of the earthquake in western Yunnan,China.By using the matched filter detection,we identify 343 foreshocks with a magnitude of -0.8-4.5,starting with a magnitude 1.0 foreshock approximately 3 months before the 2016 M_(S)5.1 Yunlong mainshock.The spatial distribution of foreshocks doesn’t show localization or directional migration towards the mainshock.Coulomb stress analysis suggests a positive stress perturbation at the mainshock nucleate area.These observations indicate a cascade-triggering mechanism of the 2016 Yunlong earthquakes.We further collect published catalogs of 2021 Yangbi and 2017 Yangbi foreshocks in the adjacent area,and analyze the temporal changes in b values.The temporal changes in b values reveal precursory drops before the mainshocks.
文摘Rubber agroforestry systems positively impact soil microbial communities. This study employed a bibliometric approach to explore the research status, hotspots, and development trends related to these effects. Using CiteSpace software, we visually analyzed research literature from the Web of Science (WOS) core database, spanning 2004 to 2024. The focus was on the impact of rubber agroforestry ecosystems on soil microbial communities. The results indicate significant attention from Chinese researchers, who have published numerous influential papers in this field. Authors Liu Wenjie have contributed the most papers, although no stable core author group exists. The Chinese Academy of Sciences is the leading research institution in terms of publication volume. While there is close collaboration between different institutions and countries, the intensity of researcher cooperation is low. The most cited literature emphasizes soil nutrients and structure in rubber agroforestry, laying a foundation for soil microorganism studies. Most cited journals are from countries like Netherlands and the United Kingdom. Key research areas include the effects of rubber intercropping on soil microbial communities, agroforestry management, and soil health. Research development can be divided into three stages: the initial stage (2010-2015), the development stage (2015-2020), and the mature stage (2020-2024). Current studies show that rubber intercropping and rubber-based agroforestry systems enhance soil microbial communities, positively impacting soil health. This paper provides a theoretical basis for the sustainable development of rubber agroforestry systems and improved management plans. Future research could explore the effects of species composition on soil microbiological characteristics and develop methods for species interactions. An in-depth study of the soil microbial community’s structure and function, and its relationship with rubber trees, is crucial. Developing effective, rationally designed rubber agroforestry systems and underground soil microbiome technology will promote sustainability and improve plantation productivity.
文摘Rubber trees (Hevea brasiliensis Müll. Arg.) have been commercially cultivated for a century and a half in Asia, particularly in China, and they constitute a common element of plantation ecosystems in tropical regions. Soil health is fundamental to the sustainable development of rubber plantations. The objective of the study is to explore the influence of different complex ecological cultivation modes on the stability of soil aggregates in rubber based agroforestry systems. In this study, the ecological cultivation mode of rubber—Alpinia oxyphylla plantation, the ecological cultivation mode of rubber—Phrynium hainanense plantations, the ecological cultivation mode of rubber—Homalium ceylanicum plantations and monoculture rubber plantations were selected, and the particle size distribution of soil aggregates and their water stability characteristics were analyzed. The soil depth of 0 - 20 cm and 20 - 40 cm was collected for four cultivation modes. Soil was divided into 6 particle levels > 20 cm. soil was divided into 6 particle levels > 5 mm, 2 - 5 mm, 1 - 2 mm, 0.5 - 1 mm, 0.25 - 0.5 mm, and 0.053 - 0.25 mm according to the wet sieve method. The particle size proportion and water stability of soil aggregates were determined by the wet sieve method. The particle size proportion and water stability of soil aggregates under different ecological cultivation modes were analyzed. The results showed that under different ecological cultivation modes in the shallow soil layer (0 - 20 cm), the rubber—Alpinia oxyphylla plantation and the rubber—Phrynium hainanense plantation promoted the development of dominant soil aggregates towards larger size classes, whereas the situation is the opposite for rubber—Homalium ceylanicum plantation. In soil layer (20 - 40 cm), the ecological cultivation mode of rubber—Phrynium hainanense plantation developed the dominant radial level of soil aggregates to the diameter level of large aggregates. Rubber—Alpinia oxyphylla plantation and rubber—Homalium ceylanicum plantation, three indicators, including the water-stable aggregate content R<sub>0.25</sub> (>0.25 mm water-stable aggregates), mean weight diameter (MWD), and geometric mean diameter (GMD), were all lower than those in the rubber monoculture mode. However, in the rubber—Phrynium hainanense plantation, the water-stable aggregate content R<sub>0.25</sub>, mean weight diameter, and geometric mean diameter were higher than in the rubber monoculture mode, although these differences did not reach statistical significance.
文摘A transient delay-coupled network was proposed by modifying the standard delay-coupled network with a transient coupling technique to enlarge the synchronization domain of the network, where the synchronization domain is the interval of the coupling strength for which the network gets synchronized. The coupling of the transient delay-coupled network is activated when the systems are in a particular region (coupling region) of the phase space and inactivated otherwise, which is different from the standard coupling. The specific synchronization performance of the transient delay-coupled network was investigated through case studies. The relationships between the synchronization domain and the coupling region were obtained by gauging the synchronization index. It is understood that the synchronization domain changes in a non-smooth manner with the variation of the coupling region. In particular, the synchronization domain of a transient delay-coupled network is much larger than that of the standard delay-coupled network when the coupling region is appropriately determined.
