One-dimensional （1D） ZnO nanostructures have been studied intensively and extensively over the last decade not only for their remarkable chemical and physical properties, but also for their diverse current and futur...One-dimensional （1D） ZnO nanostructures have been studied intensively and extensively over the last decade not only for their remarkable chemical and physical properties, but also for their diverse current and future technological applications. This article gives a comprehensive overview of the progress that has been made within the context of 1D ZnO nanostructures synthesized via wet chemical methods. We will cover the synthetic methodologies and the corresponding growth mechanisms, various nanostructures grown, their doping and alloying, and position-controlled growth on substrates. Finally, we will review their functional properties in catalysis, hydrophobic surface modification, sensing, and electronic, optical, optoelectronic, and energy harvesting devices.展开更多
【目的】对国际大型出版机构和高水平期刊的同行评议实践进行分析,总结其特点,寻找可供借鉴的方面。【方法】选取国际上一些高水平科技期刊,包括商业出版机构Elsevier和Nature出版集团的期刊,学协会出版机构OSA的期刊,以及PLo S ONE和C...【目的】对国际大型出版机构和高水平期刊的同行评议实践进行分析,总结其特点,寻找可供借鉴的方面。【方法】选取国际上一些高水平科技期刊,包括商业出版机构Elsevier和Nature出版集团的期刊,学协会出版机构OSA的期刊,以及PLo S ONE和Cell期刊为例,进行案例分析。【结果】国际期刊的同行评议一般有相对比较完整、细致的规范,科学的组织流程,有效的质量控制手段,评议结果更详细、透明,更具建设性,因此,也更易被被评议者——稿件的作者接受。【结论】国内科技期刊应制定详尽的同行评议政策,充分发挥编委在同行评议组织中的作用,提供有效的保障手段,为审稿人提供多样化的激励机制,也可以充分利用一些国际组织的相关政策和指南,通过这些途径进一步提高国内期刊同行评议的质量和效率。展开更多
Genetic relationships between Ziziphus jujuba and Ziziphus spinosa populations were studied using RAPD data in population genetics. 275 loci were gained among which 249 loci were polymorphic by 22 primers. The polymor...Genetic relationships between Ziziphus jujuba and Ziziphus spinosa populations were studied using RAPD data in population genetics. 275 loci were gained among which 249 loci were polymorphic by 22 primers. The polymorphic loci percentage was 89% among Z.spinosa population while that of Z.jujuba population was 56%. 31 specific RAPD markers were detected on 3 Z.jujuba varieties and 15 Z.spinosa forms. Cluster analysis showed: when λ=12, the forms tested were divided into 2 groups. One included Z. jujuba cv. Zanhuangdazao, Yudichuangan, Yuanshichuangan, Xiaochuangan, Qiantai No.1, Luzhuangchuangan; the other included Z. jujuba cv. Zilingdan and 26 Z. spinosa forms. All above indicated that Z. jujuba and Z.spinosa should be regarded as two separate species.展开更多
Brucellosis is a neglected zoonosis.It causes acute febrile illness and a potentially debilitating chronic infection in humans,and livestock infection has substantial socioeconomic impact.Over the past two decades,imp...Brucellosis is a neglected zoonosis.It causes acute febrile illness and a potentially debilitating chronic infection in humans,and livestock infection has substantial socioeconomic impact.Over the past two decades,improvements have been made to better understand the various aspects of human and animal brucellosis.Meanwhile,especially in the developing world,immense challenges that remain in controlling and eradicating brucellosis are novel diagnostics tools and efficacious vaccines.Here,we will focus on the remarkable issues on epidemiological survey,as well as the priority and challenge of brucellosis in China.Brucellosis will be controlled with meaningful collaboration between local and public partnerships effectively applying a One Health framework.展开更多
The divinity and animal design mirror unearthed from a rock-cut tomb at Hejiashan, Sichuan province, belongs to the system of mirrors with divinity and animal designs in three zones and distinctly differs from those o...The divinity and animal design mirror unearthed from a rock-cut tomb at Hejiashan, Sichuan province, belongs to the system of mirrors with divinity and animal designs in three zones and distinctly differs from those of the Wu system in the middle and lower Yangtze River valley. It should be classified as one of the “Shu mirrors” in the upper Yangtze River. Bearing the southern cultural tradition, mirrors with divinity and animal designs in three zones feature that the representation of the immortal world on them does not centre on the images of Huangdi, Shennong and Cangji but emphasizes the sacred icons of Shun (Dijun), Ehuang and Ntiying, characteristic of the southern cultural tradition and strong regionalism. The figure of Xiwangmu on them also differ from that in other areas, showing a distinctive relationship of evolution and replacement with early Buddhist images in the Sichuan region.展开更多
The large-sized rammed-earth building foundations on the Panlongcheng site at Huangpi are remains of early Shang period palace complex. The No. 1 Panlongcheng palace consists of four rooms with wooden-framed walls. Th...The large-sized rammed-earth building foundations on the Panlongcheng site at Huangpi are remains of early Shang period palace complex. The No. 1 Panlongcheng palace consists of four rooms with wooden-framed walls. The two rooms in the middle each have two doors on the northern and southern sides respectively；while the two end rooms have only southern doors. So the No. 1 palace must have been in the center of the whole building complex. The roof supported by peripheral columns and wooden-framed walls can be reconstructed to be hipped and single- or double- eaved. The hypothesis that the No. 1 palace may have had projecting-eaves columns has not been confirmed. The No. 2 palace is an open hall without peripheral walls and room division； its roof is supported by peripheral columns only. The idea of reconstructing it as a building with pilasters and multiple rooms seems to lack archaeological evidence. The remaining vestiges show that there were side corridors in the two flanks of the main hall of the No. 2 palace. Referring to the Shang period palace material unearthed from the Shang city-site at Yanshi and other localities, it can be inferred that either of the Nos. 1 and 2 palaces must have had an eastern corridor and a western one, and, in addition, the No. 2 palace must have had a southern corridor with a gate house. The Nos. 1--3 palaces of the Panlongcheng site formed three compounds located one behind another, and belonged to the type of court-and-living building complex. Among them the No. 2 palace was the outer court for holding great ceremonies, the No. 1 palace was the inner court for handling daily administrative affairs, and the No. 3 palace was the king and queen's living place. To the southeast of the No. 2 palace remains a group of rammed-earth house-foundations, which must have been left over from another type of palace building, possibly an ancestral temple. The remaining city-walls at Panlongcheng must have belonged to the peripheral city-walls. The palace area is in the northeast of the encl展开更多
A novel coordination polymer of [Co( p-CPOA)(2,2′-bipy)(H2O)]n ( p-CPOA2-=4-carboxylphenoxyacetate dianion, 2,2′-bipy=2,2′-bipyridine) was synthesized and characterized by elemental analysis, IR and X-ray single cr...A novel coordination polymer of [Co( p-CPOA)(2,2′-bipy)(H2O)]n ( p-CPOA2-=4-carboxylphenoxyacetate dianion, 2,2′-bipy=2,2′-bipyridine) was synthesized and characterized by elemental analysis, IR and X-ray single crystal diffraction. The title complex crystallizes in monoclinic space group C2/c, with a=1.424 4(3) nm, b=1.316 6(3) nm, c=1.947 7(4) nm, β=104.56(3)°. V=3.535 3(14) nm3, Z=8, R=0.028 5, wR=0.089 1. The cobalt(Ⅱ) ion displays a distorted octahedral coordination geometry, defined by three carboxyl oxygen atoms from different p-CPOA2- groups, two nitrogen atoms from 2,2′-bipyridine ligand and one water molecule. The cobalt atoms are bridged by p-CPOA2- groups, forming a one-dimensional chain structure along a axis. The adjacent Co...Co atoms distance is 0.996 8 nm. A layer supramolecular network is contrsucted by the hydrogen bonds and π-π stacking interactions. CCDC: 220039.展开更多
Antibiotic resistance and its environmental component are gaining more attention as part of combating the growing healthcare crisis. The One Health framework, promulgated by many global health agencies, recognizes tha...Antibiotic resistance and its environmental component are gaining more attention as part of combating the growing healthcare crisis. The One Health framework, promulgated by many global health agencies, recognizes that antimicrobial resistance is a truly inter-domain problem in which human health, animal agriculture, and the environment are the core and interrelated components.This prospectus presents the status and issues relevant to the environmental component of antibiotic resistance, namely, the needs for advancing surveillance methodology: the environmental reservoirs and sources of resistance, namely, urban wastewater treatment plants, aquaculture production systems, soil receiving manure and biosolid, and the atmosphere which includes longer range dispersal.Recently, much work has been done describing antibiotic resistance genes in various environments;now quantitative, mechanistic,and hypothesis-driven studies are needed to identify practices that reduce real risks and maintain the effectiveness of our current antibiotics as long as possible. Advanced deployable detection methods for antibiotic resistance in diverse environmental samples are needed in order to provide the surveillance information to identify risks and define barriers that can reduce risks. Also needed are practices that reduce antibiotic use and thereby reduce selection for resistance, as well as practices that limit the dispersal of or destroy antibiotic-resistant bacteria or their resistance genes that are feasible for these varied environmental domains.展开更多
文摘One-dimensional （1D） ZnO nanostructures have been studied intensively and extensively over the last decade not only for their remarkable chemical and physical properties, but also for their diverse current and future technological applications. This article gives a comprehensive overview of the progress that has been made within the context of 1D ZnO nanostructures synthesized via wet chemical methods. We will cover the synthetic methodologies and the corresponding growth mechanisms, various nanostructures grown, their doping and alloying, and position-controlled growth on substrates. Finally, we will review their functional properties in catalysis, hydrophobic surface modification, sensing, and electronic, optical, optoelectronic, and energy harvesting devices.
文摘【目的】对国际大型出版机构和高水平期刊的同行评议实践进行分析,总结其特点,寻找可供借鉴的方面。【方法】选取国际上一些高水平科技期刊,包括商业出版机构Elsevier和Nature出版集团的期刊,学协会出版机构OSA的期刊,以及PLo S ONE和Cell期刊为例,进行案例分析。【结果】国际期刊的同行评议一般有相对比较完整、细致的规范,科学的组织流程,有效的质量控制手段,评议结果更详细、透明,更具建设性,因此,也更易被被评议者——稿件的作者接受。【结论】国内科技期刊应制定详尽的同行评议政策,充分发挥编委在同行评议组织中的作用,提供有效的保障手段,为审稿人提供多样化的激励机制,也可以充分利用一些国际组织的相关政策和指南,通过这些途径进一步提高国内期刊同行评议的质量和效率。
文摘Genetic relationships between Ziziphus jujuba and Ziziphus spinosa populations were studied using RAPD data in population genetics. 275 loci were gained among which 249 loci were polymorphic by 22 primers. The polymorphic loci percentage was 89% among Z.spinosa population while that of Z.jujuba population was 56%. 31 specific RAPD markers were detected on 3 Z.jujuba varieties and 15 Z.spinosa forms. Cluster analysis showed: when λ=12, the forms tested were divided into 2 groups. One included Z. jujuba cv. Zanhuangdazao, Yudichuangan, Yuanshichuangan, Xiaochuangan, Qiantai No.1, Luzhuangchuangan; the other included Z. jujuba cv. Zilingdan and 26 Z. spinosa forms. All above indicated that Z. jujuba and Z.spinosa should be regarded as two separate species.
基金This study was funded by Major Infectious Diseases such as AIDS and Viral Hepatitis Prevention and Control technology major projects(Grant No.2018ZX10712-001)Major Infectious Diseases such as AIDS and Viral Hepatitis Prevention and Control technology major projects(Grant No.2018ZX10201002).
文摘Brucellosis is a neglected zoonosis.It causes acute febrile illness and a potentially debilitating chronic infection in humans,and livestock infection has substantial socioeconomic impact.Over the past two decades,improvements have been made to better understand the various aspects of human and animal brucellosis.Meanwhile,especially in the developing world,immense challenges that remain in controlling and eradicating brucellosis are novel diagnostics tools and efficacious vaccines.Here,we will focus on the remarkable issues on epidemiological survey,as well as the priority and challenge of brucellosis in China.Brucellosis will be controlled with meaningful collaboration between local and public partnerships effectively applying a One Health framework.
文摘The divinity and animal design mirror unearthed from a rock-cut tomb at Hejiashan, Sichuan province, belongs to the system of mirrors with divinity and animal designs in three zones and distinctly differs from those of the Wu system in the middle and lower Yangtze River valley. It should be classified as one of the “Shu mirrors” in the upper Yangtze River. Bearing the southern cultural tradition, mirrors with divinity and animal designs in three zones feature that the representation of the immortal world on them does not centre on the images of Huangdi, Shennong and Cangji but emphasizes the sacred icons of Shun (Dijun), Ehuang and Ntiying, characteristic of the southern cultural tradition and strong regionalism. The figure of Xiwangmu on them also differ from that in other areas, showing a distinctive relationship of evolution and replacement with early Buddhist images in the Sichuan region.
文摘The large-sized rammed-earth building foundations on the Panlongcheng site at Huangpi are remains of early Shang period palace complex. The No. 1 Panlongcheng palace consists of four rooms with wooden-framed walls. The two rooms in the middle each have two doors on the northern and southern sides respectively；while the two end rooms have only southern doors. So the No. 1 palace must have been in the center of the whole building complex. The roof supported by peripheral columns and wooden-framed walls can be reconstructed to be hipped and single- or double- eaved. The hypothesis that the No. 1 palace may have had projecting-eaves columns has not been confirmed. The No. 2 palace is an open hall without peripheral walls and room division； its roof is supported by peripheral columns only. The idea of reconstructing it as a building with pilasters and multiple rooms seems to lack archaeological evidence. The remaining vestiges show that there were side corridors in the two flanks of the main hall of the No. 2 palace. Referring to the Shang period palace material unearthed from the Shang city-site at Yanshi and other localities, it can be inferred that either of the Nos. 1 and 2 palaces must have had an eastern corridor and a western one, and, in addition, the No. 2 palace must have had a southern corridor with a gate house. The Nos. 1--3 palaces of the Panlongcheng site formed three compounds located one behind another, and belonged to the type of court-and-living building complex. Among them the No. 2 palace was the outer court for holding great ceremonies, the No. 1 palace was the inner court for handling daily administrative affairs, and the No. 3 palace was the king and queen's living place. To the southeast of the No. 2 palace remains a group of rammed-earth house-foundations, which must have been left over from another type of palace building, possibly an ancestral temple. The remaining city-walls at Panlongcheng must have belonged to the peripheral city-walls. The palace area is in the northeast of the encl
文摘A novel coordination polymer of [Co( p-CPOA)(2,2′-bipy)(H2O)]n ( p-CPOA2-=4-carboxylphenoxyacetate dianion, 2,2′-bipy=2,2′-bipyridine) was synthesized and characterized by elemental analysis, IR and X-ray single crystal diffraction. The title complex crystallizes in monoclinic space group C2/c, with a=1.424 4(3) nm, b=1.316 6(3) nm, c=1.947 7(4) nm, β=104.56(3)°. V=3.535 3(14) nm3, Z=8, R=0.028 5, wR=0.089 1. The cobalt(Ⅱ) ion displays a distorted octahedral coordination geometry, defined by three carboxyl oxygen atoms from different p-CPOA2- groups, two nitrogen atoms from 2,2′-bipyridine ligand and one water molecule. The cobalt atoms are bridged by p-CPOA2- groups, forming a one-dimensional chain structure along a axis. The adjacent Co...Co atoms distance is 0.996 8 nm. A layer supramolecular network is contrsucted by the hydrogen bonds and π-π stacking interactions. CCDC: 220039.
基金funded by the National Natural Science Foundation of China (No. 21677149)the Outstanding Youth Fund of the Natural Science Foundation of Jiangsu Province, China (No. BK20150050)+6 种基金the Innovative Project of Chinese Academy of Sciences (No. ISSASIP1616)funded by the Center for Health Impacts of Agriculture (CHIA) of Michigan State University, USAfunded by Agriculture and AgriFood Canada, the Canadian Genomics Research Development Initiative (GRDI-AMR)the Canadian Institute for Health Research (CIHR) through the Joint Programming Initiative on Antimicrobial Resistance (JPIAMR)the National Funds from FCT—Fundacao para a Ciência e a Tecnologia, Portugal (No. UID/Multi/ 50016/2013)funded by Academy of Finland and the Joint Programming Initiative “Water Challenges for a Changing World” (Water JPI)funded by the Collaborative Research Fund of Hong Kong (CRF), China (No. C6033-14G)
文摘Antibiotic resistance and its environmental component are gaining more attention as part of combating the growing healthcare crisis. The One Health framework, promulgated by many global health agencies, recognizes that antimicrobial resistance is a truly inter-domain problem in which human health, animal agriculture, and the environment are the core and interrelated components.This prospectus presents the status and issues relevant to the environmental component of antibiotic resistance, namely, the needs for advancing surveillance methodology: the environmental reservoirs and sources of resistance, namely, urban wastewater treatment plants, aquaculture production systems, soil receiving manure and biosolid, and the atmosphere which includes longer range dispersal.Recently, much work has been done describing antibiotic resistance genes in various environments;now quantitative, mechanistic,and hypothesis-driven studies are needed to identify practices that reduce real risks and maintain the effectiveness of our current antibiotics as long as possible. Advanced deployable detection methods for antibiotic resistance in diverse environmental samples are needed in order to provide the surveillance information to identify risks and define barriers that can reduce risks. Also needed are practices that reduce antibiotic use and thereby reduce selection for resistance, as well as practices that limit the dispersal of or destroy antibiotic-resistant bacteria or their resistance genes that are feasible for these varied environmental domains.
