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Polyurethane-degrading fungi from soils contaminated with rocket propellant and their ability to decompose alkyne terminated polybutadiene with urethane

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Studies in Fungi 2021年第1期6卷 224-239页

作者： Ren GC Pang AM Gao Y Wu SX Ge ZQ zhang tf Wanasinghe DN Khan S Mortimer PE Xu JC Gui H Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand Guiyang Nursing Vocational College Guiyang 550081GuizhouChina Honghe Center for Mountain Futures Kunming Institute of BotanyChinese Academy of SciencesHonghe County 654400YunnanChina School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Science and Technology on Aerospace Chemical Power Laboratory Hubei Institute of Aerospace ChemotechnologyXiangyang441003HubeiChina

A large amount of propellant materials are produced every year,and storage and disposal of these propellant materials seriously contributes to environmental *** terminated polybutadiene with urethane segments(PUPB)is the macromolecule backbone of these propellant materials,and degradation of PUPB is central to the eco-friendly treatment of propellant *** this study,we isolated a polyurethane(PU)-and PUPB-degrading fungus from soils contaminated with rocket propellant,and the fungus H14 was identified as Fusarium solani(Mart.)*** on macro-and micro-morphology as well as phylogenetic *** ability of *** H14 to degrade PU film and PUPB patches was evaluated via mass loss,scanning electron microscopy(SEM)and enzyme production *** loss analyses revealed a 25.8%reduction in mass of PU and 1.3%reduction in mass of PUPB after *** H14 was incubated with PU and PUPB for 90 days,*** found that *** H14 mycelia significantly colonized both PU and *** images showed that the surface of PU films and PUPB patches formed holes,underwent folding and experienced damage as well as irregular fissuring from the erosion of fungal ***,two possible degradative enzymes,lipase and esterase,were produced by *** study opens a new avenue of research for eco-friendly treatments of explosive materials and *** paper represents the first article on the degradation of PUPB patches.

关键词： enzyme Fusarium solani mass loss PU PUPB

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Comparison of the freely-moving telemetry Chinese Miniature experiment pig and Beagle dogs in cardiovascular safety pharmacology studies

Comparison of the freely-moving telemetry Chinese Miniature ...

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中国毒理学会第六届全国毒理学大会

作者： YUAN Hai-tao ZHAO J GUO JB CUI YX FENG M WU RQ zhang tf RONG J GUO Q zhang LJ HUANG C PENG Shuang-qing Evaluation and Research Centre for Toxicology Institute of Disease Control and PreventionAcademy of Military Medical Sciences

＜正＞OBJECTIVE To investigated the effects of gavage administration,daily feeding and circadian cycle on the cardiovascular parameters of both telemetry dogs and minipigs to illustrate whether minipig as an alternative is comparable to dog in cardiovascular safety *** Beagle dogs and Chinese Miniature Experiment Pigs were implanted with telemetry transmitters and the influences of the procedures of gavage administration,feeding and circadian cycle on ECG signal quality, blood pressure,heart rate,body temperature and locomotor activity were investigated during a 12-h light/12-h dark recording *** The ECG signal quality from telemetry minipig was superior to *** ECG signal quality,elevated HR,BP and locomotor activity were associated with the procedure of gavage administration and feeding in both *** ECG signal quality,BP and locomotor activity were recovered much faster in minipigs than in dogs both after gavage and feeding.A residual elevation of HR was found in minipigs lasting about 4 h *** was a clear circadian rhythm of locomotor activity in both species and the minipig was less active during the light period compared to dogs.A significant increased body temperature during the dark period not associated with feeding was observed in *** Our results indicate that the telemetry freely-moving Chinese experimental minipig is a valuable alternative to beagle dog for cardiovascular safety pharmacology studies.

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饮食模式或与乳腺癌风险相关

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肿瘤代谢与营养电子杂志 2023年第2期10卷 229-229页

作者： LU XN DU HZ zhang tf

近年来,女性乳腺癌发病率逐年攀升,而饮食是导致肿瘤发病的重要因素之一。来自河北医科大学第一附属医院的一项荟萃分析,以评估乳腺癌风险与3种常见饮食模式之间的关系。作者在Pub Med、Web of Science、CNKI、Wanfang、Embase和Cochran... 详细信息

近年来,女性乳腺癌发病率逐年攀升,而饮食是导致肿瘤发病的重要因素之一。来自河北医科大学第一附属医院的一项荟萃分析,以评估乳腺癌风险与3种常见饮食模式之间的关系。作者在Pub Med、Web of Science、CNKI、Wanfang、Embase和Cochrane图书馆的数据库中系统地搜索了2001年至2022年6月发表的三种常见饮食模式之间的关联研究,即西方饮食模式、素食饮食模式和地中海饮食模式与乳腺癌风险的关系。采用纽卡斯尔-渥太华(NOS)量表评估研究质量。

关键词：河北医科大学乳腺癌风险荟萃分析饮食模式纽卡斯尔 Cochrane图书馆地中海饮食量表评估

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Hydroclimate changes related to thermal state of the tropical Pacific in the northern coast of the South China Sea since~8000 cal yr B.P.

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Journal of Palaeogeography 2022年第3期11卷 410-426页

作者： Yue-Qin Wu Xiao-Qiang Yang Jian Yin Franz tfürsich Ting-Wei zhang Chun-Lian Liu Guangdong Provincial Key Laboratory of Geodynamics and Geohazards School of Earth Sciences and EngineeringSun Yat-Sen UniversityZhuhai 519082Guangdong ProvinceChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082Guangdong ProvinceChina FG Paläoumwelt GeoZentrum Nordbayern der Friedrich-Alexander-Universität Erlangen-NürnbergErlangen 91054Germany

Under the complex influences including the monsoonal climates and tropical hydrological cycle,the features and forcing mechanisms of precipitation changes in the tropical monsoon regions remain *** northern coast of the South China Sea(NCSCS),connecting the South China Sea(SCS)and the Pearl River Estuary(PRE),is a critical area providing reliable tropical precipitation records and probing the possible forcing mechanism of tropical precipitation,benefitted from its high deposition rate and hydroclimatic ***,δ^(18)O variations of planktonic(δ^(18)O_(G).ruber)and benthic foraminifera(δ^(18)O_(C).lobatulus)were investigated respectively to reconstruct a high-resolution low-latitude precipitation record from the core 17NH-NC3 in the *** results show a distinctδ^(18)O difference betweenδ^(18)O_(G).ruber andδ^(18)O_(C).lobatulus,not only with respect to values,but also with respect to trends in some time *** clear difference between the planktonic and benthic foraminifera(Δδ^(18)O_(b-p))illustrates the significant vertical salinity *** the temporal trend ofΔδ^(18)O_(b-p) indicates the degree of salinity stratification variated since the *** assume that the degree of stratification in the NCSCS was mainly controlled by tropical precipitation ***,the trend ofΔδ^(18)O_(b-p) values could indicate the temporal change of the tropical *** precipitation record of our research area is closely related to the tropical atmosphere–ocean dynamics stimulated by sea surface temperature(SST)changes of the tropical Pacific zone,analogous to the El Niño–Southern Oscillation(ENSO)*** the mid-Holocene(from 8260 to 5180 cal yr B.P.),the sustainable higherΔδ^(18)O_(b-p) values(>1.23‰)suggested a large amount of precipitation,pointing to a sustained state of La Niña-like,which is associated with lasted higher difference between Western SST and Eastern SST(W-E SST gradient)in the equatorial Pacif

关键词： Stable oxygen isotope Globigerinoides ruber Cibicides lobatulus Low-latitude precipitation ENSO Mid-Holocene

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A preliminary validation of the Brief COPE instrument for assessing coping strategies among people living with HIV in China

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Infectious Diseases of Poverty 2015年第1期4卷 334-343页

作者： Xiao-you Su Joseph tf Lau Winnie WS Mak KC Choi Tie-jian Feng Xi Chen Chu-liang Liu Jun Liu De Liu Lin Chen Jun-min Song Yan zhang Guang-lu Zhao zhang-ping Zhu Jin-quan Cheng Chinese Academy of Medical Sciences&Peking Union Medical College BeijingChina JC School of Public Health and Primary Care The Chinese University of Hong KongCUHK Shenzhen Research InstituteShenzhenChina Department of Psychology The Chinese University of Hong KongHong KongChina. Shenzhen Chronic Disease Hospital ShenzhenChina Hunan Province CDC HengyangChina Hengyang City CDC HengyangHunan ProvinceChina The 5th Hospital HengyangHunan ProvinceChina Shenzhen CDC ShenzhenChina The 3rd Hospital HengyangHunan ProvinceChina

Background:The Brief COPE instrument has been utilized to conduct research on various populations,including people living with HIV(PLWH).However,the questionnaire constructs when applied to PLWH have not been subjected to thorough factor ***:A total of 258 PLWH were recruited from two provinces of *** answered questions involving the scales of three instruments:the Brief COPE,the Perceived Social Support Scale,and the Perceived Discrimination Scale for *** factor analysis(CFA)and exploratory factor analysis(EFA)were ***:The CFA found a poor goodness of fit to the *** subsequent EFA identified six preliminary factors,forming subscales with Cronbach’s alphas,which ranged from 0.61 to *** correlation coefficients between the subscales and measures of perceived social support and perceived discrimination were reported,giving preliminary support to the validity of the new empirical factor ***:This study showed that the original factor structure of the Brief COPE instrument,when applied to PLWH in China,did not fit the ***,the Brief COPE should be applied to various populations and cultures with *** new factor structure established by the EFA is only preliminary and requires further validation.

关键词： People living with HIV Brief COPE Confirmatory factor analysis Explanatory factor analysis Perceived Social Support Scale Perceived Discrimination Scale for PLWH China

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Roles of arabinogalactan proteins in cotyledon formation and cell wall deposition during embryo development of Arabidopsis

Roles of arabinogalactan proteins in cotyledon formation and...

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细胞—生命的基础——中国细胞生物学学会2013年全国学术大会·武汉

作者： Zhong J Ren YJ Yu M Ma tf zhang XL Zhao J College of Life Sciences Wuhan University

Arabinogalactan proteins(AGPs) are a class of highly glycosylated,widely distributed proteins in higher *** the previous study,we found that the green fluorescence from JIM13-labeled AGPs was mainly distributed in embryo proper and the basal part of suspensor but gradually disappeared after the torpedo-stage embryos in ***(P-D-Glc)3 Yariv phenylglycoside(βGlcY),a

关键词： Arabidopsis thaliana Arabinogalactan proteins Cotyledon Cellulose Pectin Shoot apical meristem

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Effect of Central Multiphase Microstructure of Thick Plates on Work Hardening and Crack Propagation

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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 325-338页

作者： Lei Hu Liqin zhang Feng Hu Kuan Zheng Guohong zhang Collaborative Innovation Center for Advanced Steels Wuhan University of Science and TechnologyWuhan430081China Department of Applied Physics Wuhan University of Science and TechnologyWuhan430081China Analysis and Testing Center Wuhan University of Science and TechnologyWuhan430081China

The effect of multiphase microstructure in the center segregation zones(CSZ)of high-strength steel thick plates on work hardening characteristics and crack initiation/propagation were *** was correlated with deformation damage behavior by using Taylor factor(tf)gradients,kernel average misorientation(KAM),and geometric necessary dislocation(GND)*** results show that the segregation leads to a mixed structure of ferrite(soft phase)and martensite/bainite(hard phase)in the center of the thick *** to the 1/4 thickness(1/4 T)region,grain refinement occurred in the CSZ,with KAM values increasing from 0.24 to 0.49 and a decrease in the proportion of high-angle grain boundaries(>15°)from 77.4 to 51.8%.In the process of deformation,due to the influence of grain refinement and adjacent martensite/bainite,ferrite grains were divided into structural units with different tf *** higher KAM value and GND density at the interface between soft/hard phases resulted in severe work *** addition,the presence of micron-sized inclusions in the CSZ caused local strain concentration and non-continuous deformation of the matrix,which induced crack *** fracture surface showed a mixed mode of brittle cleavage fracture and ductile fracture.

关键词： Thick plate Center segregation zone Multiphase microstructure Taylor factor Crack propagation

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Analysis of Non-WSSUS Fading Dispersive Channel Model

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The Journal of China Universities of Posts and Telecommunications 2006年第2期13卷 20-25页

作者： zhang Ming zhang Jian-hua JIANG Jun zhang Ping WU Yu-fei Wireless Technology Innovation Labs (WTI) Beijing University of Posts and TelecommunieationsBeijing 100876 P.R. China Motorola (China)Electronics Ltd. No. 4 Avenue Technology Development Zone Tianjin 301800 P.R. China

The Wide-Sense Stationary Uncorrelated Scattering （WSSUS） model has long been viewed as a basic channel model to describe the fading dispersive channel. But non- WSSUS models have more universal applicability when the wireless mobile channel with broadband is studied with finer and more detailed knowledge of propagation environments. So the four-Dimension （4-D） characteristics of channel, namely time, lag, frequency, and Doppler, should be studied together. In this paper, Wigner-Ville distribution of Time-Frequency （tf） domain is introduced to analyze channel in which the incidence rays are non-stationary and correlated with each other. Several channel models, according to different move modes of incidence rays, with time-varying Doppler shift are designed and 4-D Local Scattering Function （LSF） are computed and simulated respectively. Our simulation results show the LSF present asymmetric and non-periodic tf distri- bution for some symmetric and periodic move modes of incidence rays.

关键词： non- WSSUS channel stimulation local scattering function Wigner- Ville distribution Doppler shift

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Cross-Modal Hashing Retrieval Based on Deep Residual Network

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Computer Systems Science & Engineering 2021年第2期36卷 383-405页

作者： Zhiyi Li Xiaomian Xu Du zhang Peng zhang Faculty of Information Technology Macao University of Science and TechnologyMacao School of Economics and Management South China Normal UniversityGuangzhou510006China

In the era of big data rich inWe Media,the single mode retrieval system has been unable to meet people’s demand for information *** paper proposes a new solution to the problem of feature extraction and unified mapping of different modes:A Cross-Modal Hashing retrieval algorithm based on Deep Residual Network(CMHR-DRN).The model construction is divided into two stages:The first stage is the feature extraction of different modal data,including the use of Deep Residual Network(DRN)to extract the image features,using the method of combining tf-IDF with the full connection network to extract the text features,and the obtained image and text features used as the input of the second *** the second stage,the image and text features are mapped into Hash functions by supervised learning,and the image and text features are mapped to the common binary Hamming *** the process of mapping,the distance measurement of the original distance measurement and the common feature space are kept unchanged as far as possible to improve the accuracy of Cross-Modal *** training the model,adaptive moment estimation(Adam)is used to calculate the adaptive learning rate of each parameter,and the stochastic gradient descent(SGD)is calculated to obtain the minimum loss *** whole training process is completed on Caffe deep learning *** show that the proposed algorithm CMHR-DRN based on Deep Residual Network has better retrieval performance and stronger advantages than other Cross-Modal algorithms CMFH,CMDN and CMSSH.

关键词： Deep residual network cross-modal retrieval hashing cross-modal hashing retrieval based on deep residual network

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Analysis of the trend of global power sources based on comment emotion mining

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Global Energy Interconnection 2020年第3期3卷 283-291页

作者： Shengxiang zhang Chao Shi Xin Jiang Ying zhang Lu zhang Global Energy Interconnection Development and Cooperation Organization No.8 Xuanwumennei StreetBeijing 100031P.R.China POWERCHINA Changchun Electric Power Engineering Co. Ltd.Changchun CityJilin Province130062P.R.China Nanrui Group Co. Ltd.Chenxin StreetNanjingJiangsu Province210003P.R.China Aktins The Axis10 Holliday StreetBirminghamB11TFUnited Kingdom

In recent years,renewable energy technologies have been developed vigorously,and related supporting policies have been *** developmental trend of different energy sources directly affects the future developmental pattern of the energy and power *** trend research can be quantified through data statistics and model calculations;however,parameter settings and optimization are difficult,and the analysis results sometimes do not reflect objective *** paper proposes an energy and power information analysis method based on emotion *** method collects energy commentary news and literature reports from many authoritative media around the world and builds a convolutional neural network model and a text analysis model for topic classification and positive/negative emotion evaluation,which helps obtain text evaluation matrixes for all collected ***,a long-short-term memory model algorithm is employed to predict the future development prospects and market trends for various types of energy based on the analyzed emotions in different time *** results indicate that energy trend analysis based on this method is consistent with the real scenario,has good applicability,and can provide a useful reference for the development of energy and power resources and of other industry areas as well.

关键词： Global energy and power trend Topic classification Text emotion analysis CNN LSTM

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