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Stable seasonal migration patterns in giant pandas

Zoological Research 2023年第2期44卷 341-348页

作者： Meng Wang Yong-Gang Nie Ronald R.Swaisgood wei wei wen-Liang Zhou Ze-Jun Zhang Gui-Ming Wang fu-wen wei Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Giant Panda Research San Diego Zoo Institute for Conservation ResearchEscondidoCalifornia 92027USA Department of Wildlife Fisheries and AquacultureMississippi State UniversityMississippi 39762USA

A critical function of animal movement is to maximize access to essential resources in temporally fluctuating and spatially heterogeneous *** mediated resource fluctuations may influence animal movements,enabling them to track changing resource distributions,resulting in annual migration *** conservation-dependent giant panda(Ailuropoda melanoleuca) displays seasonal movement patterns;however,the key factor driving these seasonal migration patterns remains poorly ***,we used GPS tracking collars to monitor the movements of six giant pandas over a 12-year period across different elevations,and performed statistical analysis of seasonal migration directions,routes,habitat revisitation,home range overlap,first arrival events,and *** results revealed a compelling pattern of seasonal migrations that facilitated the ability of the pandas to forage at the appropriate time and place to maximize nutritional *** results indicated that pandas utilize spatial memory to locate reliable food resources,as evidenced by their annual return to the same or similar winter and summer home ranges and the consistently maintained percentage of home range *** novel insights into giant panda foraging and movement ecology not only enhance our understanding of its ability to adapt to nutritionally poor dietary resources but also provide important information for the development of resource utilization-based protection and management strategies.

关键词： Giant panda Seasonal migration Home range Foraging ecology Spatial memory

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Impact of sympatric carnivores on den selection of wild giant pandas

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Zoological Research 2020年第3期41卷 273-280页

作者： Xin-Lei Lai wen-Liang Zhou Hua-Lei Gao Meng Wang Kai Gao Bao-wei Zhang fu-wen wei Yong-Gang Nie School of Life Sciences Anhui UniversityHefeiAnhui 230601China Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering College of Life SciencesBeijing Normal UniversityBeijing 100875China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingYunnan 650223China

Interspecific killing is a primary reason for the low survival rates of some animal species. The giant panda(Ailuropoda melanoleuca) is an altricial eutherian mammal and thus, in comparison to other infants, panda cubs are highly vulnerable, which may significantly influence the selection of breeding sites by females. Here, we used infrared camera traps to monitor giant panda dens for 5.5 years in Foping National Nature Reserve(FNNR) to determine how interspecific factors affect den selection by wild female pandas. Results indicated that Asian black bears(Ursus thibetanus), yellow-throated martens(Martes flavigula), leopard cats(Prionailurus bengalensis), and masked palm civets(Paguma larvata) visited the dens frequently, and the presence of these species negatively influenced den selection by female pandas. Interestingly, the presence of rodents and terrestrial birds appeared to indicate den safety, and female giant pandas were not averse and even preferred dens with a high abundance index of rodents and terrestrial birds. The den suitability index(DSI) was a reliable tool for evaluating whether dens were suitable for female giant pandas to give birth to and rear cubs, with preference for dens with high DSI values. This study increases our understanding of the den selection criteria of female giant pandas and the main threats to the survival of their cubs,thus providing important guidance for the conservation and management of this species.

关键词： Ailuropoda melanoleuca Interspecific interference competition Dens Den suitability index

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Identifying priority protection areas of key food resources of the giant panda

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Zoological Research 2023年第5期44卷 860-866页

作者： Ying-Jie Ma Meng Wang Xiao-Yu Hu Xiao-Dong Gu Yu-Mei Li fu-wen wei Yong-Gang Nie Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Xinjiang Key Laboratory of Biological Resources and Genetic Engineering College of Life Science and TechnologyXinjiang UniversityUrumqiXinjiang 830017China Sichuan Giant Panda National Park Administration ChengduSichuan 610081China Center for Evolution and Conservation Biology Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)GuangzhouGuangdong 511458China

Animals that live in seasonal environments adjust their reproduction cycle to optimize seasonal forage *** pandas(Ailuropoda melanoleuca)are seasonal altitudinal migrants that feed on bamboo shoots and leaves with different nutritional ***,the importance of bamboo shoots to giant pandas,especially small and isolated populations,is not fully ***,we explored whether mating time of giant pandas is shaped by bamboo shoot *** also assessed the intensity of ongoing bamboo shoot harvesting by local communities in 42 giant panda reserves based on questionnaire *** intensity and protection levels of bamboo shoot harvesting were *** these data,we developed a priority ranking scheme of protection areas for this key food *** study showed that pandas time their mating behavior to coincide with bamboo shoot phenology due to the high nutritional demands associated with mating and *** also found that bamboo shoots were not well protected in many ***,Daxiangling,and Xiaoxiangling,containing the most isolated panda populations,were identified as the areas with the most urgent need of ***,equal attention should be paid to the Qiong L-B population,as this region holds considerable potential to serve as a corridor between the Minshan and Qionglai *** address the challenges posed by bamboo shoot harvesting,we recommend establishing more practical bamboo shoot management policies,increasing public awareness of bamboo shoot protection,and providing alternative sources of income for local communities.

关键词： Giant panda Forage quality Bamboo shoot harvesting Reproduction timing Conservation management

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最大熵分位值估计及其对偶型优化解法

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航空动力学报 2017年第2期32卷 416-423页

作者：吴福仙温卫东南京航空航天大学能源与动力学院南京210016

针对经典最大熵分位值估计中拉格朗日系数计算目前存在高度非线性、计算结果精度不高或有时难以收敛等问题,提出了一种对偶型-逐次寻优的方法.基于拉格朗日对偶法,推导建立了含有拉格朗日系数优化函数的对偶表达式;在此基础上,基于样本... 详细信息

针对经典最大熵分位值估计中拉格朗日系数计算目前存在高度非线性、计算结果精度不高或有时难以收敛等问题,提出了一种对偶型-逐次寻优的方法.基于拉格朗日对偶法,推导建立了含有拉格朗日系数优化函数的对偶表达式;在此基础上,基于样本的概率权重矩约束,提出了逐次寻优算法.针对几种常见的概率分布类型和一种较为复杂的概率分布类型,采用对偶型最大熵方法和经典最大熵方法对其概率累积函数和分位值进行计算对比分析表明:对偶型最大熵分位值估计不仅具有非线性程度低、形式简单,而且对偶型-逐次寻优的方法具有比较高的计算精度,优化迭代的收敛性好等特点.

关键词：分位值估计对偶型最大熵逐次优化概率权重矩

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溶液凝聚PMMA薄膜的表征

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华南理工大学学报（自然科学版） 2005年第3期33卷 24-27页

作者：薛锋傅伟文程镕时华南理工大学材料科学与工程学院广东广州510640

将聚甲基丙烯酸甲酯(PMMA)丙酮溶液分别在自然以及超声振动下成膜,所得薄膜分别作差示扫描量热(DSC)和裂解气相色谱-质谱(PyGC MS)表征.分析结果表明:不同成膜条件下,高分子的凝聚态结构有所不同,试样中残留的溶剂量也有差别;自然挥发... 详细信息

将聚甲基丙烯酸甲酯(PMMA)丙酮溶液分别在自然以及超声振动下成膜,所得薄膜分别作差示扫描量热(DSC)和裂解气相色谱-质谱(PyGC MS)表征.分析结果表明:不同成膜条件下,高分子的凝聚态结构有所不同,试样中残留的溶剂量也有差别;自然挥发所得的初生态薄膜中残留的溶剂是超声作用下所得薄膜的12倍.

关键词：溶液凝聚聚甲基丙烯酸甲酯超声凝聚态结构表征

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Application of Dorzagliatin in peritoneal dialysis patients with type 2 diabetes mellitus:A case report

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World Journal of Diabetes 2025年第1期16卷 204-210页

作者： Fang Chen Bo An wen-Cheng An Gang fu wei Huang Hui-Xian Yan Department of Endocrinology Beijing Haidian HospitalBeijing 100080China Department of Nephrology Beijing Haidian HospitalBeijing Haidian Section of Peking University Third HospitalBeijing 100080China

BACKGROUND Treating diabetes in dialysis patients remains a challenge,with many hypoglycemic drugs requiring dose adjustments or avoidance in these *** SUMMARY This report describes an 83-year-old female patient with a 30-year history of type 2 diabetes(T2DM)who had struggled to control her blood sugar for more than a *** had a history of high blood pressure for 30 years,had undergone continuous ambulatory peritoneal dialysis for more than two years,was 163 cm tall,weighed 77 kg,and had a body mass index of 28.98 kg/*** intensive insulin therapy at a daily dose of 150 units,adding Dorzagliatin at a dosage of 75 mg orally twice daily led to immediate blood sugar improvement and a gradual reduction in insulin *** one month of follow-up,the fasting plasma glucose was 6-8 mmol/L,and the 2-hour postprandial glucose was 8-12 mmol/*** To our knowledge,this report is the first to use Dorzagliatin to treat type 2 diabetes peritoneal dialysis patients with challenging glucose ***,a novel glucokinase activator primarily metabolized by the liver,exhibits no pharmacokinetic differences among patients with varying degrees of chronic kidney *** has a high plasma protein binding rate and may not be cleared by peritoneal dialysis,potentially offering a new glycemic control option for Type 2 diabetic patients on peritoneal dialysis.

关键词： Dorzagliatin Type 2 diabetes mellitus Peritoneal dialysis Glucokinase activator Glucose control Case report

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没食子酸丙酯-富马酸酯衍生物的合成与性能

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精细化工 1999年第3期16卷 35-38页

作者：吴耀焕张逸伟曾汉维钟振声傅伟文华南理工大学应用化学系

没食子酸丙酯分别与５种富马酸单酯酰氯反应，制得了５种相应的３，４二羟基５（反β烷氧羰基丙烯酰氧基）苯甲酸丙酯，这些新化合物同时具有良好的抗氧化和抗菌活性。

关键词：没食子酸丙酯抗氧化剂食品富马酸酯衍生物

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带承台倾斜单桩水平承载变形性状数值分析

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长江科学院院报 2016年第10期33卷 121-125页

作者：樊文甫曹卫平西安建筑科技大学土木工程学院西安710055 特变电工新疆新能源股份有限公司乌鲁木齐830011

为研究带承台倾斜单桩水平承载变形性状,通过数值模拟手段分析了水平荷载作用下桩身倾角、长径比对桩顶带承台斜桩的承载变形性状的影响,并重点分析了竖向荷载对水平受荷斜桩性状的影响。结果表明:1水平荷载作用下,负斜桩的桩顶水平位... 详细信息

为研究带承台倾斜单桩水平承载变形性状,通过数值模拟手段分析了水平荷载作用下桩身倾角、长径比对桩顶带承台斜桩的承载变形性状的影响,并重点分析了竖向荷载对水平受荷斜桩性状的影响。结果表明:1水平荷载作用下,负斜桩的桩顶水平位移最大,直桩居中,正斜桩最小;桩身倾角越大,斜桩桩顶水平位移与相应直桩桩顶水平位移差值越大;相同情况下,长径比对斜桩桩顶水平位移影响不明显。2水平荷载作用下,桩身倾角只影响斜桩桩身弯矩的大小,而最大桩身弯矩的位置基本不变。3竖向荷载减小了负斜桩桩顶水平位移,却增大了正斜桩桩顶位移。4负斜桩的桩身最大弯矩随着竖向荷载的增大而减小,正斜桩却与之相反。

关键词：斜桩水平承载特性数值分析长径比桩身倾角竖向荷载

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焦炉烟气余热回收发电技术分析

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化工设计通讯 2019年第12期45卷 65-66页

作者：付文伟中国瑞林工程技术股份有限公司

随着经济快速发展,人们对于环境保护投入了越来越多的关注和重视。煤焦化行业属于一种高排放、高污染的行业,据调查其排放的焦炉烟气的温度都比较高,大约在300℃左右,这种高温烟气任意的排放不但会污染环境,同时也是一种能源的浪费。基... 详细信息

随着经济快速发展,人们对于环境保护投入了越来越多的关注和重视。煤焦化行业属于一种高排放、高污染的行业,据调查其排放的焦炉烟气的温度都比较高,大约在300℃左右,这种高温烟气任意的排放不但会污染环境,同时也是一种能源的浪费。基于此,提出了采用先进的热管技术对该烟气进行回收利用,产生蒸汽并进行发电,将其运用在发电技术领域可以代替传统的汽轮发电机技术,取得了理想的效果。通过实践发现,这种将焦炉烟气余热进行发电的新技术不但有效解决了焦化行业的污染问题,而且也实现了节能减排,为焦化行业的可持续发展指引了新的方向。

关键词：焦炉烟气余热回收发电技术分析

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大型硫铁矿制酸系统的余热回收及利用

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铜业工程 2008年第4期 26-28页

作者：付文伟中国瑞林工程技术有限公司江西南昌330002

以单系列年产40万t硫铁矿制酸工程为例,介绍大型硫铁矿制酸生产过程的余热回收及利用。

关键词：余热回收及利用余热锅炉余热发电

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