检索结果-南通市图书馆

Impact of different organic matters on the occurrence of antibiotic resistance genes in activated sludge

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2023年第5期127卷 273-283页

作者： xiuwen zhang Suwan Liu Haohao Sun Kailong Huang Lin Ye State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Nanjing Jiangdao Institute of Environmental Research Co. Ltd.Nanjing 210019China

The occurrence of antibiotic resistance genes(ARGs)in various environments has drawn worldwide attention due to their potential *** studies have reported that a variety of substances can enhance the occurrence and dissemination of ***,few studies have compared the response of ARGs under the stress of different organicmatters in biologicalwastewater treatment *** this study,seven organic pollutantswere added into wastewater treatment bioreactors to investigate their impacts on the ARG occurrence in activated *** on high-throughput sequencing,it was found that the microbial communities and ARG patterns were significantly changed in the activated sludge exposed to these organic *** with the non-antibiotic refractory organic matters,antibiotics not only increased the abundance of ARGs but also significantly changed the ARG *** increase of Gram-negative bacteria(e.g.,Archangium,Prosthecobacter and Dokdonella)carrying ARGs could be the main cause of ARG *** addition,significant co-occurrence relationships between ARGs and mobile genetic elements were also observed in the sludge samples,which may also affect the ARG diversity and abundance during the organic matter treatment in the ***,these findings provide new information for better understanding the ARG occurrence and dissemination caused by organic pollutants in wastewater treatment systems.

关键词： Organic pollutants Antibiotic resistance genes Metagenomic sequencing Mobile genetic elements Microbial community

Approaches to design inorganic semiconductors while maintaining structural motifs

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2018年第7期39卷 11-17页

作者： xiuwen zhang Jianbai Xia Shenzhen Key Laboratory of Flexible Memory Materials and Devices College of Electronic Science and TechnologyShenzhen University Institute of Semiconductors Chinese Academy of Sciences

Inorganic semiconductors are the essential constituents of information society, having enabled most of the devices for microelectronics, optoelectronics, new energy technology, healthcare devices, artificial intelligence,etc. From the view of condensed matter physics and materials science, inorganic semiconductors are not ***, this special class of materials are keeping inspiring new inventions and consequently new technologies,which in turn promote the design of new semiconductors. The kinds of semiconductors in nature are finite. On one hand, the new techniques need semiconductors with better properties than existing ones, on the other hand, the new computers＇ software and hardware develop so rapid that it is possible to design new semiconductors according to people＇s desire before manufacturing them. In this paper, we review the rational design of inorganic semiconductors by transformation of their elemental constituents,while maintaining their structure motifs.

关键词： materials design ternary semiconductors elemental substitution

Multiferroicity and giant in-plane negative Poisson’s ratio in wurtzite monolayers

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 489-499页

作者： Zhuang Ma Pu Huang Jin Li Peng zhang Jiaxin Zheng Wen Xiong Fei Wang xiuwen zhang Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen University518060ShenzhenChina School of Advanced Materials Peking UniversityShenzhen Graduate School518055ShenzhenChina Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences400714ChongqingChina School of Physics and Microelectronics Zhengzhou University450001ZhengzhouChina

Monolayers of layered materials,such as graphite and molybdenum dichalcogenides,have been the focus of materials science in the last ***,we reveal benign stability and intriguing physical properties in the thinnest monolayer wurtzite(wz)semiconductors,which can be exfoliated from their bulk and stacked to reform the wz *** candidate ZnX and CdX(X=S,Se,Te)monolayers possess low cleavage energy and direct bandgaps,which harbor strongly coupled ferroelectricity and ferroelasticity with low transition barriers,giant in-plane negative Poisson’s ratio,as well as giant Rashba spin splitting,enabling the co-tunability of spin splitting and auxetic magnitudes via multiferroic *** wz monolayers can be used as building blocks of devices structures,due to their inherent“self-healable”capacity,which offer more flexibility for semiconductor fabrication and provide a natural platform to probe the interplay of multiple physical effects,bringing light into the rich physics in tetrahedral semiconductors.

关键词： plane splitting molybdenum

Switchable hidden spin polarization and negative Poisson's ratio in two-dimensional antiferroelectric wurtzite crystals

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Semiconductors 2023年第12期44卷 72-80页

作者： Zhuang Ma Jingwen Jiang Gui Wang Peng zhang Yiling Sun Zhengfang Qian Jiaxin Zheng Wen Xiong Fei Wang xiuwen zhang Pu Huang Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China School of Advanced Materials Peking UniversityShenzhen Graduate SchoolShenzhen 518055China Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Renewable and Sustainable Energy Institute University of ColoradoBoulderColorado 80309USA

Two-dimensional(2D)antiferroelectric materials have raised great research interest over the last ***,we reveal a type of 2D antiferroelectric(AFE)crystal where the AFE polarization direction can be switched by a certain degree in the 2D *** 2D functional materials are realized by stacking the exfoliated wurtzite(wz)monolayers with“self-healable”nature,which host strongly coupled ferroelasticity/antiferroelectricity and benign *** AFE candidates,i.e.,Zn X and Cd X(X=S,Se,Te),are all semiconductors with direct bandgap atΓpoint,which harbors switchable antiferroelectricity and ferroelasticity with low transition barriers,hidden spin polarization,as well as giant in-plane negative Poisson's ratio(NPR),enabling the co-tunability of hidden spin characteristics and auxetic magnitudes via AFE *** 2D AFE wz crystals provide a platform to probe the interplay of 2D antiferroelectricity,ferroelasticity,NPR,and spin effects,shedding new light on the rich physics and device design in wz semiconductors.

关键词： wurtzite crystal multiferroics hidden spin polarization negative Poisson's ratio

Prospects of Viscous Crude Development in Liaohe Oilfields

在线全文

学校读者我要写书评

暂无评论

China Oil & Gas 1997年第2期4卷 68-70页

作者： zhang xiuwen Rong Jiashu Chief Geologist Research Institute of Liaohe Petroleum Exploration Bureau

Liaohe oil area has developed viscous crude for 20 years. The annual output reached 8.46 million tons in 1995, of which 6.77 million tons were produced by steam injection, accounting for 56% of crude output by the met... 详细信息

关键词： Viscous oil recovcry Steam soaking Development project

Empirical Research on Ordos Informal Financial Scale and Its Effects on Regional Economic Growth

在线全文

学校读者我要写书评

暂无评论

Journal of Zhouyi Research 2014年第2期 81-85页

作者： xiuwen Lan Ling zhang Inner Mongolia University of Finance and Economics Inner Mongolia China 010070

Genetic Diversity Analysis of 13 Maize Inbred Lines by SSR Molecular Markers

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Agricultural Research 2017年第7期9卷 80-82页

作者： Yi ZHONG Yueying LI xiuwen zhang Maize Research Institute Jilin Academy of Agricultural Sciences

This paper used SSR molecular markers to perform the genetic diversity analysis on 13 ordinary inbred lines of maize of different sources in order to divide heterotic groups of maize inbred line and predict heterosis. Using 12 pairs of SSR primers,a total of 47 allelic variants were detected in 13 inbred lines,2-5 alleles were detected for each pair of primers,an average of 3. 9,and polymorphism information content varied from 0. 379 to 0. 828. According to the cluster analysis,the 13 inbred lines could be divided into 5 groups.

关键词： SSR molecular markers Maize Inbred line Genetic diversity

Palaeoceanological significance of Holocene ostracean banks in Tianjin area

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 1991年第2期10卷 249-262页

作者： Wang Qiang, Li xiuwen, zhang Zhiliang, Li Fenglin, Shao Jun, Bai Dezhong, Shang Xuexi and Tang Ruolu(Received October 24, 1990 accepted November 14, 1990)

On the basis of the study of ostracean banks in Tianjin area, the present study recognized that the ostracean banks at Ninghe County in Tianjin area are well developed along the west coast of the Bohai Sea; they consist of thanato-coenose and taphocoenose from Crassistrea gigars and C. revularis. From the 14C datings it can be known that the banks had formed from early Middle-Holocene and continued up to over 2 ka BP (14C age). The top has different reliefs . Although there is an effect of spatial shift of estuary position, the top is only distributed in the range of-0. 50--2. 50 m(Huanghai elevation minus National elevation system). The banks cannot explain the sea-level fluctuation. As the string ostracean banks are distributed near E-W direction, it suggests that the direction of tidal currents was then similar to that of the present day.

关键词： Palaeoceanological significance of Holocene ostracean banks in Tianjin area

Maternal Administration of GHRP-6-loaded PLGA-PEG-PLGA Thermosensitive Hydrogel Increases Growth and Vitality of Piglets

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2011年第3期2卷 173-178页

作者： Xiaohui Ren Zhunli Qi xiuwen zhang Jianwei Dai Linlin Hao Songcai Liu Yongliang zhang College of Ocean Hebei Agriculture University Qinhuangdao Hebei 066003 China Department of Biochemistry Guangzhou Medical College Guangzhou Guangdong 510182 China Department of Biochemistry Veterinary College Jinlin University Changchun Jilin 130062 China College of Animal Science South China Agricultural University Guangzhou Guangdong 510642 China

Both growth hormone-releasing peptide 6 （GHRP-6） and growth hormone-releasing hormone （GHRH） have potent GH-releasing activity in animals. We have previously demonstrated that the administration of a plasmid encoding the GHRH gene to pregnant mice and pig augmented long-term growth in first generation progeny,and that the administration of GHRP-6 results in growth augmentation in mice and rabbits. However,it has not yet been reported if GHRP-6 induces intergenerational growth effects in pigs. Ploy lactic-co-glycolic acid （PLGA） microsphere adsorption of treatment proteins enhances gene expression,genetic immunization and the ability to protect plasmid DNA and peptides from degradation. The cur-rent study was conducted to determine the growth performance of piglets born to gilts treated with GHRP-6 incorporated into thermosensitive PLGA-PEG-PLGA triblock copolymers. Gilts were injected intra-muscularly once at day 85 of gestation with 30 mg of GHRP6-loaded thermosensitive PLGA-PEG-PLGA triblock copolymers. Piglets were weighed periodically between birth and 28 days. Mean body weights of piglets born to GHRP-6-treated gilts were 6. 58% to 18. 89% （P 〈 0. 05 ） greater than those of piglets born to control gilts. This study confirms that enhanced maternal GHRP-6 mediated by thermosensitive PLGA-PEG-PLGA can augment growth of piglets.

关键词： GH GHRP-6 growth performance pig PLGA-PEG-PLGA