期刊文献+
共找到14篇文章
< 1 >
每页显示 20 50 100
环境变化对中国野生蜜蜂多样性的影响 被引量:17
1
作者 刘秀嶶 Douglas Chesters +2 位作者 武春生 周青松 朱朝东 《生物多样性》 CAS CSCD 北大核心 2018年第7期760-765,共6页
蜜蜂尤其是野生蜜蜂对维持生态系统功能、保证粮食安全等方面具有重要的作用。近年来,野生蜜蜂的栖息地由于天然林减少,而现营造的又多为纯林,以及大面积种植单一经济林而遭到了严重破坏和片断化。已有研究表明纯林、油茶(Camellia olei... 蜜蜂尤其是野生蜜蜂对维持生态系统功能、保证粮食安全等方面具有重要的作用。近年来,野生蜜蜂的栖息地由于天然林减少,而现营造的又多为纯林,以及大面积种植单一经济林而遭到了严重破坏和片断化。已有研究表明纯林、油茶(Camellia oleifera)和橡胶树(Hevea brasiliensis)经济林中的野生蜜蜂多样性较低。现代农业中新烟碱类杀虫剂、除草剂的大规模使用,会对蜜蜂个体发育和行为产生不利影响。城市化进程潜在影响了蜜蜂的群落,如郊区的蜜蜂平均物种丰富度要明显高于中心商业区;废水、废气和粉尘对蜜蜂的觅食、生长发育等都具有不利影响;CO_2等温室气体导致的气候变暖影响了传粉蜜蜂与植物之间的互利共生关系,造成时间或功能上的不匹配。综上所述,我国的环境变化可能已导致中国野生传粉蜜蜂多样性的下降和种群的衰退。我国虽是传粉蜜蜂种质资源大国,但缺乏种类和分布本底以及长期而有效的监测数据,缺乏对蜜蜂多样性和种群下降机制的研究。因此亟待开展传粉蜜蜂调查、实施长期监测项目,为之建立研究网络。并通过积累丰富的相关数据,开展风险预测和评估,用于管理和缓解传粉蜜蜂下降所带来的经济及非经济影响。 展开更多
关键词 生境 城市化 气候变化 环境污染 传粉蜜蜂
原文传递
基于在线数据库的鳞翅目刺蛾科昆虫物种多样性及其全球分布格局 被引量:8
2
作者 焦萌 李晶 +2 位作者 赵慧峰 武春生 张爱兵 《生物多样性》 CAS CSCD 北大核心 2019年第7期778-786,共9页
鳞翅目刺蛾科昆虫在全球范围内广泛分布,是重要经济林、行道林的主要害虫。本研究通过对在线数据库中刺蛾科昆虫分布数据进行整理分析,阐明其在全球范围内的物种多样性及分布格局,并初步探讨造成其物种分布不均的原因,从而为物种多样性... 鳞翅目刺蛾科昆虫在全球范围内广泛分布,是重要经济林、行道林的主要害虫。本研究通过对在线数据库中刺蛾科昆虫分布数据进行整理分析,阐明其在全球范围内的物种多样性及分布格局,并初步探讨造成其物种分布不均的原因,从而为物种多样性保护及害虫防治提供科学依据。通过检索生物条形码数据库(BarcodeofLife Data System V4, BOLD V4)和全球生物多样性信息数据库(Global Biodiversity Information Facility, GBIF)中记录的标本信息,并结合部分地区鳞翅目昆虫名录及野外采集样本数据,对刺蛾科昆虫的分布信息进行汇总分析并绘制分布图。统计得到具有明确地理坐标的刺蛾科昆虫分布信息61,947条,共187属637种。结果表明,在世界动物地理区系尺度上,东洋区刺蛾科昆虫物种多样性最高,共72属,古北区31属,澳新区及新热带区均为27属,非洲热带区22属,新北区19属。在国家尺度上,中国存在刺蛾科昆虫123种,越南116种,其次为哥斯达黎加(75种)和澳大利亚(69种)。中低纬度地区具有较高的刺蛾科昆虫物种多样性和丰富度,这有可能与该地区的气候历史条件及丰富的寄主植物资源有关。 展开更多
关键词 刺蛾科 物种多样性 动物地理区系 全球分布
原文传递
CaCO_(3)纳米晶体稳定非水相泡沫实验研究
3
作者 张佩亮 燕永利 +3 位作者 吕博 曹玉霞 吴春生 贺炳成 《日用化学工业(中英文)》 CAS 北大核心 2023年第6期642-648,共7页
非水相泡沫在油田开发、功能材料、食品工业和日化等领域有着广泛的应用,对非水相泡沫性能的调控在相关行业的发展中发挥着重要的影响。然而,由于非水相溶剂具有的低界面张力和低介电常数,导致其发泡难度较大。为解决非水相溶剂发泡困... 非水相泡沫在油田开发、功能材料、食品工业和日化等领域有着广泛的应用,对非水相泡沫性能的调控在相关行业的发展中发挥着重要的影响。然而,由于非水相溶剂具有的低界面张力和低介电常数,导致其发泡难度较大。为解决非水相溶剂发泡困难的问题,文章通过制备CaCO_(3)纳米晶体,并经TEM,FT-IR及XRD等对晶体颗粒进行了表征,采用1H,1H,2H,2H-全氟癸基三乙氧基硅烷对CaCO_(3)纳米晶体的润湿性进行了调控,研究CaCO_(3)纳米晶体对非水相溶剂发泡性能的影响。研究发现:随CaCO_(3)纳米晶体质量分数的增加,不同接触角的CaCO_(3)纳米晶体所产生的泡沫体积呈现先增后减的趋势,当晶体质量分数为5%时,非水相溶剂发泡性能最佳,泡沫体积最高可达到120 mL;非水相泡沫的稳定性随CaCO_(3)纳米晶体接触角的增加呈现先增强后减弱的趋势,当接触角范围在47.5°~73.9°时,非水相泡沫的稳定性最佳,排液半衰期最高可达到100 h。 展开更多
关键词 泡沫 CaCO_(3)纳米晶体 润湿性 发泡性能
在线阅读 下载PDF
A supplemental description of the genus Lista Walker from China(Lepidoptera: Pyralidae), with two new and a newly record species 被引量:2
4
作者 Mingqiang Wang Fuqiang Chen +1 位作者 Chaodong Zhu chunsheng wu 《Zoological Systematics》 CSCD 2019年第1期84-88,共5页
Three species of the genus Lista Walker are recognized from China, as a supplement of the former work. Among them, two species are described as new to science, namely L. furcillatusa Wang, Chen & Wu sp. nov. and L... Three species of the genus Lista Walker are recognized from China, as a supplement of the former work. Among them, two species are described as new to science, namely L. furcillatusa Wang, Chen & Wu sp. nov. and L. menglaensis Wang, Chen & Wu sp. nov. One species, L. monticola Yamanaka, 2000, is reported from China for the first time. Adults and genitalia of the three species are illustrated. Moreover, a key to the Chinese species and an updated checklist of the genus are provided. 展开更多
关键词 PYRALOIDEA Epipaschiinae snout MOTH taxonomy China
原文传递
Four new species of Limacodidae from China(Lepidoptera: Zygaenoidea) 被引量:2
5
作者 chunsheng wu 《Zoological Systematics》 CSCD 2020年第4期316-320,共5页
Four new species,Epsteinius luoi sp.nov.,Aphendala notoseusa sp.nov.,Aphendala mina sp.nov.and Striogyia acuta sp.nov.,are described and illustrated from China.
关键词 Zygaenoidea LIMACODIDAE slug caterpillar moths new species China
原文传递
A NOVEL BITTER DETECTION BIOSENSOR BASED ON LIGHT ADDRESSABLE POTENTIOMETRIC SENSOR 被引量:1
6
作者 chunsheng wu LIPING DU +1 位作者 LIHUI MAO PING WANG 《Journal of Innovative Optical Health Sciences》 SCIE EI CAS 2012年第2期34-40,共7页
This paper presents a novel biosensor for bitter substance detection on the basis of light addressable potentiometric sensor(LAPS).Taste receptor cells(TRCs)were used as sensitive elements,which can respond to differe... This paper presents a novel biosensor for bitter substance detection on the basis of light addressable potentiometric sensor(LAPS).Taste receptor cells(TRCs)were used as sensitive elements,which can respond to different bitter stimuli with extreme high sensitivity and speci-ficity.TRCs were isolated from the taste buds of rats and cultured on the surface of LAPS chip.Due to the unique advantages such as single-cell recording,light addressable capability,and noninvasiveness,LAPS chip was used as secondary transducer to monitor the responses of TRCs by recording extracelluar potential changes.The results indicate LAPS chip can effectively record the responses of TRCs to different bitter substances used in this study in a real-time manner for a long-term.In addition,by performing principal component analysis on the LAPS recording data,different bitter substances tested can be successfully discriminated.It is suggested this TRCsLAPS hybrid biosensor could be a valuable tool for bitter substance detection.With further improvement and novel design,it has great potentials to be applied in both basic research and practical applications related to bitter taste detection. 展开更多
关键词 Taste receptor cells bitter detection bitter signal transduction light addressable potentiometric sensor BIOSENSOR
原文传递
Three new species and a new combination of Stericta Lederer from China(Lepidoptera:Pyralidae:Epipaschiinae) 被引量:1
7
作者 Mingqiang Wang Fuqiang Chen chunsheng wu 《Zoological Systematics》 CSCD 2018年第2期190-195,共6页
Three species of the genus Stericta are described as new to science, S. melasiversusa sp. nov., S. penicilasa sp. nov. and S. hampsoni sp. nov. And a new combination, Stericta melanobasis(Hampson, 1906) comb. nov., ... Three species of the genus Stericta are described as new to science, S. melasiversusa sp. nov., S. penicilasa sp. nov. and S. hampsoni sp. nov. And a new combination, Stericta melanobasis(Hampson, 1906) comb. nov., was transferred from the genus Lepidogma. All adults and their genital structures are illustrated. The differences between the genus Stericta and it allied genera are discussed. 展开更多
关键词 Pyraloidea Lepidogma Jocara Titanoceros China
原文传递
Changes in soil microbial communities induced by warming and N deposition accelerate the CO 2 emissions of coarse woody debris
8
作者 Hankun Wang chunsheng wu +5 位作者 Junping Liu Qi Chen Chao Li Chunjie Shu Yi Zhang Yuanqiu Liu 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第4期1051-1063,共13页
Warming and nitrogen(N)deposition are two important drivers of global climate changes.Coarse woody debris(CWD)contains a large proportion of the carbon(C)in the total global C pool.The composition of soil microbial co... Warming and nitrogen(N)deposition are two important drivers of global climate changes.Coarse woody debris(CWD)contains a large proportion of the carbon(C)in the total global C pool.The composition of soil microbial communities and environmental changes(i.e.,N deposition and warming)are the key drivers of CWD decomposition,but the interactive impact between N deposition and warming on the composition of soil microbial communities and CWD decomposition is still unclear.In a laboratory experiment,we study and simulate respiration during decomposition of the CWD(C 98)of Cryptomeria japonica(CR)and Platycarya strobilacea(PL)in response to warming and N deposition over 98 days.Resuts show that either warming or N addition signifi cantly accelerated the C 98 of the two tree species by altering the soil microbial community(bacterial:fungi and G+:G–).The combined treatment(warming+N)resulted in a decomposition eff ect equal to the sum of the individual eff ects.In addition,the species composition of bacteria and fungi was obviously aff ected by warming.However,N deposition had a remarkable infl uence on G+:G–.Our results indicated that N deposition and warming will observably alter the composition and growth of the microbial community and thus work synergistically to accelerate CWD decomposition in forest ecosystems.We also present evidence that N deposition and warming infl uenced the composition and balance of soil microbial communities and biogeochemical cycling of forest ecosystems. 展开更多
关键词 WARMING N deposition Coarse woody debris DECOMPOSITION Soil microbial community
在线阅读 下载PDF
A taxonomic review of the genus Eoophyla Swinhoe, 1900(Lepidoptera: Crambidae: Acentropinae) from China
9
作者 Fuqiang Chen chunsheng wu 《Zoological Systematics》 CSCD 2019年第3期212-239,共28页
Twenty-one species of the genus Eoophyla Swinhoe, 1900 are recognized from China, of which 7 species are described as new to science, namely E. tenuisa sp. nov., E. minisigna sp. nov., E. fusca sp. nov., E. clarusa sp... Twenty-one species of the genus Eoophyla Swinhoe, 1900 are recognized from China, of which 7 species are described as new to science, namely E. tenuisa sp. nov., E. minisigna sp. nov., E. fusca sp. nov., E. clarusa sp. nov., E. leiokellula sp. nov., E. minita sp. nov. and E. ciliensis sp. nov. Two species, E. peribocalis and E. sejunctalis, are not recorded in this paper as their record were doubted. All adults and their genital structures examined are illustrated. A key to the Chinese species is provided. All type materials are deposited in IZCAS. 展开更多
关键词 PYRALOIDEA AQUATIC MOTHS taxonomy new species
原文传递
Discrete Element Simulation of Asphalt Pavement Milling Process to Improve theUtilization of Milled Old Mixture
10
作者 Jianmin wu Bingbing Zhang +3 位作者 chunsheng wu Zhiqiang Shu Shaoqing Li Jianqi Yang 《Journal of Renewable Materials》 SCIE EI 2021年第5期993-1011,共19页
In order to improve the utilization of milling materials,save stone resources and reduce milling energy consumption,the aged Styrene-butadiene-styrene(SBS)modified asphalt was used as a binder to prepare AC-16 asphalt... In order to improve the utilization of milling materials,save stone resources and reduce milling energy consumption,the aged Styrene-butadiene-styrene(SBS)modified asphalt was used as a binder to prepare AC-16 asphalt mixture to simulate old asphalt pavement materials.First,the test and discrete element simulation results of uniaxial compression tests were used to calibrate the parameters of the parallel bonding contact model between asphalt mortar and aggregates.On this basis,a microscopic model of the asphalt mixture was established to simulate the old asphalt pavement.Then,the discrete element software PFC(Particle Flow Code)was used to simulate the milling process of the old asphalt pavement.Analyzed the force of the cutting tool and the utilization rate of milling materials,and the optimal milling speed and milling depth were determined.Finally,the energy consumption in the milling process was measured.It is concluded that in the process of milling the old asphalt pavement,using a cutting angle of 42°,milling speed of 0.5 m/s and milling depth of 20 mm can reduce the wear of the cutting tool.In this case,the direct utilization rate of milling materials is 85.3%,and the rate of energy consumption reduction is 33.53%.After parameter optimization,the utilization rate of milling materials can be increased by 17.4%. 展开更多
关键词 Discrete element method milling parameters old pavement milling milling materials recycling rate
在线阅读 下载PDF
Butterfly fauna(Lepidoptera:Rhopalocera) of the Peter the Great Mountain range(Tajikistan)
11
作者 Abdulaziz Davlatov Gexia Qiao chunsheng wu 《Zoological Systematics》 CSCD 2016年第3期318-322,共5页
The article provides new data on the butterfly fauna of the Peter the Great Mountain range, especially the first reports of the analysis of the quantitative accounts on the number of butterflies. However, the presente... The article provides new data on the butterfly fauna of the Peter the Great Mountain range, especially the first reports of the analysis of the quantitative accounts on the number of butterflies. However, the presented species in the work (51 species) is not the final, as not all parts of the mountain ran^ze were visited. 展开更多
关键词 TAJIKISTAN Peter the Great Mountain range quantitative accounts population distribution.
原文传递
Checklist of Epipaschiinae in China(Lepidoptera:Pyralidae)
12
作者 Mingqiang Wang Fuqiang Chen +1 位作者 Chaodong Zhu chunsheng wu 《Zoological Systematics》 CSCD 2021年第4期328-341,共14页
Epipaschiinae,a subfamily of Pyralidae,has characteristic features distinct from other groups of Pyralidae,such as the thick scales and labial palpi usually upturned.This subfamily is a relative smaller group in Pyral... Epipaschiinae,a subfamily of Pyralidae,has characteristic features distinct from other groups of Pyralidae,such as the thick scales and labial palpi usually upturned.This subfamily is a relative smaller group in Pyralidae,and currently reports over 700 species worldwide(Solis,1992,1994;Nuss et al.,2021).Solis(1992)listed 287 known epipaschiine species all over the world,including 273 species from Old World.In China,the first checklist of Epipaschiinae was systematically summarized by Lu and Guan(1953),including 8 genera and 53 species. 展开更多
关键词 SPECIES LISTED summarized
原文传递
Long-term culture and morphological maturation of taste organoids enhance taste discrimination in a biomimetic biosensor
13
作者 Shuge Liu Yating Chen +6 位作者 Yuqi Chen Yuxuan Yuan Minggao Liu Zhiyao Wang Wei Chen Liping Du chunsheng wu 《Microsystems & Nanoengineering》 2025年第3期633-641,共9页
Taste is a multifaceted sensory experience that involves various human senses related to food and is a key indicator of food quality.A biomimetic taste-based biosensor,which utilizes taste bud organoids as sensitive e... Taste is a multifaceted sensory experience that involves various human senses related to food and is a key indicator of food quality.A biomimetic taste-based biosensor,which utilizes taste bud organoids as sensitive elements,is able to simulate the real responses of taste transduction in vitro.Taste bud organoids are three-dimensional structures created from taste stem/progenitor cells,integrated with transducers to develop the biosensor.In this research,organoids derived from mouse taste epithelium were employed as the sensitive element,while a microelectrode array(MEA)device served as the transduction element to create the biosensor.Following exposure to sour,sweet,bitter,and salty stimuli,one specific channel was chosen,and the average discharge rates were calculated as 6.5±2.29 Hz,7.25±3.77 Hz,3.33±2.62 Hz,and 4.6±2.42 Hz,respectively.Statistical analysis indicated that,apart from the sour taste,the frequency and amplitude of the other three taste stimuli showed significant increases.Principal component analysis(PCA)demonstrated the ability to identify and differentiate various tastes during taste conduction monitoring.Additionally,it was observed that on day 14,the taste bud organoids exhibited aggregation and fusion,leading to the formation of typical taste bud structures,indicating their maturation.This research offers a theoretical foundation and a valuable tool for effective and objective taste detection in vitro. 展开更多
关键词 bud organoids biomimetic biosensor microelectrode array taste bud organoids MATURATION taste discrimination principal component analysis
原文传递
MOF-mediated synthesis of novel PtFeCoNiMn high-entropy nanoalloy as bifunctional oxygen electrocatalysts for zinc-air battery 被引量:2
14
作者 Mingkuan Xie Xin Xiao +7 位作者 Duojie wu Cheng Zhen chunsheng wu Wenjuan Wang Hao Nian Fayan Li Meng Danny Gu Qiang Xu 《Nano Research》 SCIE EI CSCD 2024年第6期5288-5297,共10页
High-entropy alloy(HEA)-based materials are expected to be promising oxygen electrocatalysts due to their exceptional properties.The electronic structure regulation of HEAs plays a pivotal role in enhancing their elct... High-entropy alloy(HEA)-based materials are expected to be promising oxygen electrocatalysts due to their exceptional properties.The electronic structure regulation of HEAs plays a pivotal role in enhancing their elctrocatalytic ability.Herein,PtFeCoNiMn nanoparticles(NPs)with subtle lattice distortions are constructed on metal-organic framework-derived nitrogen-doped carbon by an ultra-rapid Joule heating process.Thanks to the modulated electronic structure and the inherent cocktail effect of HEAs,the as-synthesized PtFeCoNiMn/NC exhibits superior bifunctional electrocatalytic performance with a positive half-wave potential of 0.863 V vs.reversible hydrogen electrode(RHE)for oxygen reduction reaction and a low overpotential of 357 mV at 10 mA·cm^(-2)for oxygen evolution reaction.The assembled quasi-solid-state zinc-air battery using PtFeCoNiMn/NC as air electrode shows a high peak power density of 192.16 mW·cm^(-2),low charge−discharge voltage gap,and excellent durability over 500 cycles at 5 mA·cm^(-2).This work demonstrates an effective route for rational design of bifunctional nanostructured HEA electrocatalysts with favorable electronic structures,and opens up a fascinating directions for energy storage and conversion,and beyond. 展开更多
关键词 oxygen reduction reaction oxygen evolution reaction high-entropy nano-alloy zinc-air battery
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部