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Anthropogenic activity,hydrological regime,and light level jointly influence temporal patterns in biosonar activity of the Yangtze finless porpoise at the junction of the Yangtze River and Poyang Lake,China

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Zoological Research 2023年第5期44卷 919-931页

作者： Peng-Xiang Duan zhi-Tao wang Tomonari Akamatsu Nick Tregenza Guang-Yu Li ke-Xiong wang Ding wang College of Fisheries Huazhong Agricultural UniversityWuhanHubei 430070China School of Marine Science Ningbo UniversityNingboZhejiang 315832China key Laboratory of Aquatic Biodiversity and Conservation Institute of HydrobiologyChinese Academy of SciencesWuhanHubei 430072China Ocean Policy Research Institute Sasakawa Peace FoundationMinato-kuTokyo 105-8524Japan Chelonia Limited The BarkhouseNorth CliffMousehole TR196PHUK

Under increasing anthropogenic pressure,species with a previously contiguous distribution across their ranges have been reduced to small fragmented *** critically endangered Yangtze finless porpoise(Neophocaena asiaeorientalis asiaeorientalis),once commonly observed in the Yangtze River-Poyang Lake junction,is now rarely seen in the river-lake *** this study,static passive acoustic monitoring techniques were used to detect the biosonar activities of the Yangtze finless porpoise in this unique *** linear models were used to examine the correlation between these activities and anthropogenic impacts from the COVID-19 pandemic lockdown and boat navigation,as well as environmental variables,including hydrological conditions and light *** approximately three consecutive years of monitoring(2020–2022),porpoise biosonar was detected during 93%of logged days,indicating the key role of the corridor for finless porpoise *** addition,porpoise clicks were recorded in 3.80%of minutes,while feeding correlated buzzes were detected in 1.23%of minutes,suggesting the potential existence of localized,small-scale ***,both anthropogenic and environmental variables were significantly correlated with the diel,lunar,monthly,seasonal,and annual variations in porpoise biosonar *** the pandemic lockdown period,porpoise sonar detection showed a significant ***,a significant negative correlation was identified between the detection of porpoise click trains and buzzes and boat traffic *** addition to water level and flux,daylight and moonlight exhibited significant correlations with porpoise biosonar activities,with markedly higher detections at night and quarter moon *** the spatiotemporal reduction of anthropogenic activities,implementing vessel speed restrictions(e.g.,during porpoise migration and feeding),and maintaining local natural hydrological regimes are critica

关键词： Yangtze finless porpoises Yangtze River Poyang Lake Pandemic lockdown Boat traffic Hydrological regime Light level

Nitrogen Cycling and Losses Under Rice-Wheat Rotations with Coated Urea and Urea in the Taihu Lake Region

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Pedosphere 2007年第1期17卷 62-69页

作者： wang Xiao-zhi ZHU Jian-Guo GAO Ren H. YASUKAZU FENG ke State key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Environment Science and Engineering College Yangzhou University Yangzhou 225009 （China） Fujian Normal University Fuzhou 350007 （China） Japan International Research Center for Agricultural Sciences 1-2 Ohwashi Tsukuba Ibaraki 305-8686 （Japan）

A lysimeter experiment with undisturbed soil profiles was carried out to study nitrogen cycling and losses in a paddy soll with applications of coated urea and urea under a rice-wheat rotation system in the Taihu Lake region from 2001 to 2003. Treatments for rice and wheat included urea at conventional, 300 （rice） and 250 （wheat） kg N ha^-1, and reduced levels, 150 （rice） and 125 （wheat） kg N ha^-1, coated urea at two levels, 100 （rice） and 75 （wheat） kg N ha^-1, and 150 （rice） and 125 （wheat） kg N ha^-1, and a control with no nitrogen arranged in a completely randomized design. The results under two rice-wheat rotations showed that N losses through both NH3 volatilization and runoff in the coated urea treatments were much lower than those in the urea treatments. In the urea treatments N runoff losses were significantly （P 〈 0.001） positively correlated （r = 0.851） with applied N. N concentration in surface water increased rapidly to maximum two days after urea application and then decreased quickly. However, if there was no heavy rain within five days of fertilizer application, the likelihood of N loss by runoff was not high. As the treatments showed little difference in N loss via percolation, nitrate N in the groundwater of the paddy fields was not directly related to N leaching. The total yield of the two rice-wheat rotations in the treatment of coated urea at 50% conventional level was higher than that in the treatment of urea at the conventional level. Thus, coated urea was more favorable to rice production and environmental protection than urea.

关键词： ammonia volatilization coated urea N cycling percolation runoff

A Modified Symmetric and Antisymmetric Decomposition-Based Three-Dimensional Numerical Manifold Method for Finite Elastic-Plastic Deformations

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Acta Mechanica Solida Sinica 2020年第1期33卷 71-97页

作者： Jinfu ke Shuilin wang State key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesXiaohongshanWuchangWuhan 430071HubeiChina University of Chinese Academy of Sciences Beijing 100049China

There are relatively few studies on large rotation or deformation by means of the three-dimensional(3D)numerical manifold method(NMM).A new modified symmetric and antisymmetric decomposition(MSAD)theory is developed and implemented into the 3D NMM,eliminating the false-volume expansion and false-rotation strain/stress *** Jaumann rate is used to measure the material rotation,and the geometric stiffness built on the Jaumann rate is *** incremental formulas of the MSAD-based 3D NMM and a practical guide on the implementation of the MSAD theory are given in detail and *** new theory and formulas can be applied to analyze both large rotation and large deformation *** on the hypoelasto-plasticity theory and the unified strength theory,the unified yield criterion with associated flow rule is implemented into the MSAD-based 3D *** typical examples are studied,showing the advantage and potential of the new MSAD theory and the MSAD-based 3D NMM.

关键词： Modified symmetric and antisymmetric decomposition theory Three-dimensional numerical manifold method Finite elastic plastic deformations Hypoelasto-plasticity Unified strength theory

Coupling analysis of transcutaneous energy transfer coils with planar sandwich structure for a novel artificial anal sphincter

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第11期15卷 1021-1034页

作者： Lei ke Guo-zheng YAN Sheng YAN zhi-wu wang Da-sheng LIU Institute of Medical Precision Engineering and Intelligent Systems School of Electronic Information and Electrical EngineeringShanghai Jiao Tong University

This paper presents a set of analytical expressions used to determine the coupling coefficient between primary and secondary Litz-wire planar coils used in a transcutaneous energy transfer(TET) system. A TET system has been designed to power a novel elastic scaling artificial anal sphincter system(ES-AASS) for treating severe fecal incontinence(FI), a condition that would benefit from an optimized TET. Expressions that describe the geometrical dimension dependence of self- and mutual inductances of planar coils on a ferrite substrate are provided. The effects of ferrite substrate conductivity, relative permeability, and geometrical dimensions are also considered. To verify these expressions, mutual coupling between planar coils is computed by 3D finite element analysis(FEA), and the proposed expressions show good agreement with numerical results. Different types of planar coils are fabricated with or without ferrite substrate. Measured results for each of the cases are compared with theoretical predictions and FEA solutions. The theoretical results and FEA results are in good agreement with the experimental data.

关键词： Transcutaneous energy transfer Planar spiral inductance Mutual inductance Coupling coefficient Artificial anal sphincter Fecal incontinence

Ytterbium triflate hydrate catalyzed Michael addition and cyclocondensation of α,β-unsaturated ketones with active methylene compounds

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Chinese Chemical Letters 2008年第9期19卷 1024-1026页

作者： zhi Wei Chen Yan Li wang Ren Er Chen Wei ke Su key Laboratory of Pharmaceutical Engineering of Ministry of Education Zhejiang University of Technology PR China College of Pharmaceutical Sciences Zhejiang University of Technology Itangzhou 310014 PR China

Catalyzed by ytterbium（III） triflate hydrate [Yb（OTf）***20], the Michael addition and cyclocondensation of α,β-unsaturated ketones with active methylene compounds to afford the 1,4-adducts and benzo[b]pyran deri... 详细信息

关键词： Ytterbium(Ⅲ) triflate hydrate α,β-Unsaturated ketones Active methylene compounds Benzo[b]pyran derivatives

A New Hybrid Model of Amino Acid Substitution for Protein Functional Classification

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Chinese Chemical Letters 2005年第8期16卷 1133-1136页

作者： ke Long wang zhi Ning WEN Fu Sheng NIE Meng Long LI College of Chemistry Sichuan University Chengdu 610064 State key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha 410082

In this paper, a new hybrid model of amino acid substitution is developed and compared with the others in previous works. The results show that the new hybrid model can characterize the protein sequences very well by ... 详细信息

关键词： Hybrid model of amino acid substitution protein functional classification Fisher weights.

A new forsythenside from Forsythia suspensa

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Chinese Chemical Letters 2008年第10期19卷 1234-1236页

作者： Yan zhi wang Qin Ge Ma Xiao ke Zheng Wei Sheng Feng Henan College of Traditional Chinese Medicine Zhengzhou 450008 China

A new forsythenside, 4-hydroxy-4-[8-[[1-[（4-hydroxyphenyl）acetyl]-β-D-glucopyranosyl-6-]oxy]ethy1]-2,5-cyclohexadien-1- one, named forsythenside F, was isolasted from the plant of Forsythia suspensa （Thunb.） Vahl. The structure of the new compound was established on the basis of various spectroscopic analysis, including ^1H NMR, ^13C NMR, 2D NMR techniques （HMBC and HSQC）, and HR-ESI-MS.

关键词： Forsythia suspensa Forsythcnside Forsythcnside F

Magnetic resonance imaging findings for differential diagnosis of perianal plexiform schwannoma: Case report and review of the literature

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World Journal of Clinical Cases 2018年第5期6卷 88-93页

作者： Xue-Liang Sun ke Wen zhi-Zhong Xu Xiao-Peng wang Department of Colorectal Surgery the Suzhou Affiliated Hospital of Nanjing University of Chinese Medicine

Plexiform schwannoma is an extremely rare variant of schwannoma, accounting for approximately 5% of cases. Due to the rarity and lack of typical symptoms, signs and radiological images, a definite diagnosis of plexiform schwannoma may not be made by clinicians prior to biopsy. In the present study, we report the first case(to our knowledge) of perianal plexiform schwannoma arising from the overlapped skin of the ischioanal fossa, and we propose an intratumorally nonenhanced circumferential capsule dividing the tumour into multiple homogeneously enhanced nodules as a magnetic resonance imaging feature to aid in the differential diagnosis of plexiform schwannoma from ancient schwannoma, cavernous haemangioma, liposarcoma and plexiform neurofibroma.

关键词： Plexiform schwannoma Magnetic resonance imaging Perianal Bascom cleft lift Diagnosis

Effects of active molecules of Korean pine seed on rodent health and implications for forest regeneration

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Journal of Forestry Research 2022年第6期33卷 1045-1060页

作者： Gang Wei ke Rong kexin Yang zhiying Bao Xiaotong Zhang zhi Zhang Yanni Gong Jiafu wang School of Forestry Northeast Forestry UniversityHarbin150040People’s Republic of China College of Wildlife and Protected Area Northeast Forestry UniversityHarbin150040People’s Republic of China Beidahuang Wondersun Dairy Co.Ltd Harbin150040People’s Republic of China Inner Mongolia Greater Khingan Range Forestry Science and Technology Research InstituteYakeshi022150People’s Republic of China

After maturation, Korean pine (Pinus koraiensis Siebold & Zucc.) seeds often cannot disperse to reach a suitable germination site. It is therefore difficult to naturally regenerate by itself and relies on animal dispersal. Squirrels hoard pine seeds as winter food and Korean pine seeds stored for overwintering might become the source of regeneration of the species. From field observations, the pine seeds are the food preference for squirrels during autumn in the Lesser Khingan Mountains in Northeast China. Such preference by squirrels has been attributed to high seed energy content and the ease of seed storage. However, it may also be expected from nutritional aspects that a coevolutionary relationship between squirrels and Korean pine species could be partially explained by the effect of active seed components and their physiological regulatory effects on squirrels. To test this hypothesis, control experiments were carried out to examine the modulatory effects of Korean pine nut oil (PNO) on intestinal microbiota, inflammatory profile and oxidative stress in mice. The results showed that, compared with mice fed a high-fat diet, PNO significantly improved the physical and the healthy state of mice. Histological analysis of the liver and epididymal fat tissue showed that PNO alleviated liver and adipocyte lesions, and inflammation caused by high-fat diets. PNO also significantly decreased atherosclerotic index and ameliorate serum lipid accumulation to prevent cardiovascular disease, which effect the positive control SG group. Moreover, PNO elevated superoxide dismutase and glutathione peroxidase enzyme activities and reduced malondialdehyde levels in the serum. 16S rRNA sequencing showed that PNO restored intestinal microbiota composition, significantly increasing the relative abundance of Lactobacillus and Akkermansia bacteria. These results suggest that Korean pine seeds not only provide adequate fat, protein and energy for squirrels, but also promote physical hea

关键词： Plant–animal interactions Natural regeneration Coevolution Rodent Korean pine seed dispersal