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Population dynamics and habitat use of the Black-necked Crane (Grus nigricollis) in the Yarlung Tsangpo River basin, Tibet, China

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Avian Research 2019年第3期10卷 366-373页

作者： Ru Jia Tian Ma Fengjiang zhang guogang zhang Dongping Liu Jun Lu Research Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing 100091China Key Laboratory of Forest Protection of State Forestry and Grassland Administration Beijing 100091China National Bird Banding Center of China Beijing 100091China Wildlife Conservation and Disease Surveillance Center of Liaoning Province Dalian 116000China

Background:The Black-necked Crane (Grus nigricollis)is an internationally threatened crane living on the plateau, mainly in winter, in the Yarlung Tsangpo River basin in Tibet,western China. In the past five years,some economic development projects have been conducted in this area,posing potential threats to the wintering populations of the cranes and their habitats. Therefore, the current population dynamics of wintering Black-necked Cranes and habitat suitability in the Yarlung Tsangpo River basin were investigated. Methods: Twenty counties were surveyed using the line transect method in December 2017 and January 2018, and we recorded the location,flock size,number of individuals,habitat types and presence of human disturbance in which they *** compared the results from the middle wintering period in this survey with those from 2014. Results: The highest number of cranes recorded was 8291,and the results showed that the cranes were mainly distributed in Lhaze, Namling, Samzhubze, and Lhunzub.A total of 577 and 495 flocks were recorded in the early and middle wintering periods, respectively. In the early wintering period,there were signi ficant differences in the number of individuals across the di fferent habitats,with crop stubble land and plowed land representing more than 30% of the total habitat *** the middle wintering period, there were also signi ficant differences in the number of individuals, and the utilization of crop stubble land represented over 60% of the total. Conclusions: Wintering Black-necked Cranes mainly fed on spilled grains in stubble habitat after harvest. In the middle wintering period, some of the farmlands were plowed and irrigated,which resulted in food shortages in these areas,and the cranes tended to gather in mixed flocks of large size instead of as a single *** were still considerable regional wintering populations decreases in Quxu,Nedong,and Sakya in 2018 compared with 2014,and these decreases were main

关键词： Black-necked Crane Habitat use Population dynamics Tibet Yarlung Tsangpo River basin

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Experimental Study on the Resistance and Splash Performances of Water Collecting Devices for Mechanical Draft Cooling Towers

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Fluid Dynamics & Materials Processing 2023年第7期19卷 1789-1801页

作者： Guoqing Long guogang zhang Qi zhang Cuilin Zhao Suoying He Fengzhong Sun China Energy Engineering Group Guangdong Electric Power Design Institute Co. Ltd.Guangzhou510663China School of Energy and Power Engineering Shandong UniversityJinan250061China

In recent years,water collecting systems,with the associated advantages of energy saving and noise reduction,have become the foundation for the development of a scheme to optimize the structure of cooling *** explore the feasibility of this approach for mechanical draft cooling towers,a small-scale experimental device has been built to study the resistance and splash performances of three U-type water collecting devices(WCDs)for different water flow rates and wind *** experimental results show that within the considered ranges of wind speed and water flow rate,the pressure drop of the different WCDs can vary *** resistance and local splash performances can also be remarkably *** recommendations about the most suitable system are ***,a regression analysis of the experimental data is conducted,and the resulting fitting formulas for resistance and splash performance of WCD are reported.

关键词： Mechanical draft cooling towers water collecting device resistance performance splash performance fitting formulas

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A revised species population estimate for the Bar-headed Goose(Anser indicus)

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Chinese Birds 2017年第1期8卷 57-62页

作者： Dongping Liu guogang zhang Fengshan Li Tian Ma Jun Lu Fawen Qian KeyLaboratoryofForestProtectionofStateForestryAdministration ResearchInstituteofForestEcologyandEnvironmentProtectionChineseAcademyofForestry InternationalCraneFoundation

Background: The Bar-headed Goose(Anser indicus) is a species that relies heavily on the plateau wetlands of Asia and whose population was thought to be declining. Over the past decade, south-central Tibet, one of the most important wintering grounds, supported large numbers of Bar-headed Geese, but the population had not been regularly monitored in this ***: We surveyed wintering Bar-headed Geese along the Yarlung Zangbo, Lhasa and Nyang Qu rivers, the three major river valleys and their tributaries in south-central Tibet in January 2014 and recorded their location, flock size and habitat utilization. Based on these data and the latest wintering counts elsewhere, we revised the population estimate for this ***: We recorded more than 67,000 Bar-headed Geese in south-central Tibet during January 2014. By geographic area, the geese were most abundant in the Lhasa River valley(38.5%) and the Nyang Qu River valley(31.0%), and by administrative division in Lhunzhub(27.2%) and Shigatse(26.7%). Bar-headed Geese were most often observed feeding in winter wheat fields and ploughed fields, resting on pastureland and marshes. The approximate number of 67,000 geese recorded in Tibet is more than four times the estimate of 1993 for the same region and exceeds the most recent world population estimate of 52,000–60,000. Based on our work in Tibet and the latest wintering counts available from other areas, we revised the estimated population size of this species to 97,000–118,***: Our result reveals a remarkable increase in the number of Bar-headed Geese wintering in south-central Tibet. This population increase most likely stems from a proliferation of cropland and especially winter wheat fields in south-central Tibet. This habitat improvement may also cause short-stopping of the Bar-headed Goose and thus reduce mortality of the geese that would otherwise undertake a somewhat daunting trans-Himalayan migration.

关键词： Bar-headed Goose Species population estimate Tibet Wintering ground

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Autumn migration routes of fledgling Chinese Egrets(Egretta eulophotes)in Northeast China and their implications for conservation

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Avian Research 2022年第1期13卷 78-86页

作者： Hongying Xu Zeyu Yang Dongping Liu Ru Jia Lixia Chen Boshi Liang Zhengwang zhang guogang zhang Ecology and Nature Conservation Institute Chinese Academy of ForestryBeijing100091China Key Laboratory of Forest Protection of National Forestry and Grassland Administration Beijing100091China National Bird Banding Center of China Beijing100091China Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering College of Life SciencesBeijing Normal UniversityBeijing100875China

The Chinese Egret(Egretta eulophotes)is a globally threatened bird species living on the coast and islands of Liaoning,northeastern China,mainly in *** further protect the breeding population of Chinese Egrets,it is important to understand the current protection status of their distribution sites at pre-migration period and migration ***-three individuals were tagged with satellite transmitters at Fantuo Island in Changhai and Xingren Island in Zhuanghe,Liaoning Province,northeastern China,in July of 2016,2017,and 2018,to identify important distribution sites during the pre-migration period,as well as detailed migration *** results showed that coastal mudflats in Liaoning and the west coast of North Korea were important feeding and roosting sites for fledgling Chinese Egrets from August to *** home range sizes in August were significantly larger than in *** eastern coast from Shandong to Guangdong,as well as Taiwan,China,and Manila Bay and Galileo Islands in the Philippines,were important stopover sites during fall ***,we found that the egrets’autumn migration could be divided into four routes,i.e.,sea-crossing migration(SCM),coastal migration(CM),inland migration(IM),and mixed migration(MM).The migration distance,timing,speed,and straightness of the four routes also *** SCM routes were the straightest,and had the fastest migration speed and shortest travel time,while the IM routes had the lowest straightness and speed,and the longest *** Bay and Bohol Island in the Philippines,the west coast of Tanintharyi in Myanmar,and the Zengwun River Estuary in Taiwan,China,were wintering *** findings on the key distribution sites along pre-migration and fall migration routes,including some stopover sites,have important implications for the conservation of and global action plan development for the vulnerable Chinese Egret.

关键词： Conservation implications Fledgling Chinese Egret Migration route Liaodong Peninsula Satellite tracking

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Design, Synthesis and Antitumor Activity of Novel Indolin-2-one Derivatives Containing 4-Thiazolidinone Moiety

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Chemical Research in Chinese Universities 2015年第2期31卷 235-243页

作者： LIU Zijian HOU Yunlei zhang guogang XU Ning MI Bin GONG Ping ZHAO Yanfang Key Laboratory of Structure-based Drug Design and D~covery Min~try of Education Shenyang Pharmaceutical University Shenyang 110016 P. R. China State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug College of Chemical and Pharmaceutical Engineering Hebei University of Science and Technology Shijiazhuang 050018 P. R. China

A series of novel indolin-2-one derivatives containing 4-thiazolidinone moiety（7a--7r） were synthesized and evaluated for their in vitro antitumour activities against MDA-MB-231 （human breast cancer）, H460（human lung cancer） and HT-29（human colon cancer） cell lines by standard 3-（4,5-dimethylthiazae-2-yl）-2,5-diphenyltetrazo- lium bromide（MTT） assay. Representative compounds（Td, 7k, 7m, 7p） with higher cytotoxicity were further examined against one normal cell line（WI-38, human fetal lung fibroblasts）. The preliminary investigation shows that most of the compounds display moderate to excellent potency and high selectivity against different human cancer cell lines. In particular, the most potent compound 7m shows promising cytotoxicity against MDA-MB-231, H460 and HT-29 cell lines with IC5o values of 0.78, 0.056 and 0.018 μmol/L, respectively. The potency is much higher than that of Sunitinib（IC50=3.46 μmol/L against MDA-MB-231, IC50=2.59 μmol/L against H460, IC50=1.50 μmol/L against HT-29） by 4.4, 46.3 and 83.3 fold.

关键词： lndolin-2-one 4-Thiazolidinone Antitumour activity

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New disease severity classification of patients with stable chronic obstructive pulmonary disease in Shanghai

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Chinese Medical Journal 2014年第17期127卷 3046-3050页

作者： Xie guogang zhang Yingying Zhou Xin Department of Respiratory Medicine Shanghai First People's Hospital Shanghai Jiao Tong University Shanghai 200080 China

Background The Global Initiative for Chronic Obstructive Lung Disease （GOLD） presented a new ABCD group classification of chronic obstructive pulmonary disease （COPD）.We aimed to examine the association of spirometric classification and the new GOLD classification with exacerbations,and to compare symptoms in different *** We investigated 848 patients with stable COPD from 24 *** annual frequencies of acute exacerbation and hospitalization were compared between the old and new *** symptom level was assessed using COPD assessment test （CAT） and modified British Medical Research Council （mMRC） *** A total of 848 patients were included in this *** to spirometric classification,there were 32 patients of grade Ⅰ （3.8％）,315 of grade Ⅱ （37.1％）,366 of grade Ⅲ （43.2％）,and 135 of grade Ⅳ （15.9％）.According to GOLD 2011 classification,there were 59 patients of group A （7.0％）,172 of group B （20.3％）,55 of group C （6.5％）,and 562 of group D （66.3％）.In spirometric classification,the annual frequencies of acute exacerbation and associated hospitalization were respectively 1 （0-3） and 0 （0-2） for grade Ⅰ; 1 （0-5） and 0 （0-2） for grade Ⅱ; 2 （0-6） and 1 （0-3） for grade Ⅲ,and 3 （0-6） and 2 （0-3） for grade Ⅳ.In GOLD 2011,respectively 0 （0-3） and 0 （0-1）（group A）,1 （0-4） and 0 （0-3）（group B）,1 （0-5） and 0 （0-3）（group C）,and 3 （0-6） and 1 （0-3）（group D）.There were no significant difference between group B and C （Z=-1.347,P=0.178; Z=-0.772,P=0.440,respectively）.The coincidence rate using mMRC=1 and CAT=10 as cutoff points was 86.6％（734/848,x=0.706）,compared with 77.9％（661/848,K=0.60） using mMRC=2 and CAT=*** Lung function test may be a better predictor of acute exacerbation and associated hospitalization of *** is more appropriate to use mMRC=1 as cutoff point for assessing COPD symptoms.

关键词： chronic obstructive pulmonary disease Global Initiative for Chronic Obstructive Lung Disease chronic obstructive pulmonary disease assessment test exacerbation lung function test

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Migration routes of the endangered Oriental Stork(Ciconia boyciana)from Xingkai Lake,China,and their repeatability as revealed by GPS tracking

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Avian Research 2023年第2期14卷 215-222页

作者： Zeyu Yang Lixia Chen Ru Jia Hongying Xu Yihua Wang Xuelei Wei Dongping Liu Huajin Liu Yulin Liu Peiyu Yang guogang zhang Key Laboratory of Forest Protection of National Forestry and Grassland Administration National Bird Banding Center of ChinaEcology and Nature Conservation InstituteChinese Academy of ForestryBeijing100091China Xingkai Lake National Nature Reserve of Heilongjiang JixiHeilongjiang158300China

The Oriental Stork(Ciconia boyciana)is listed as'Endangered'on the International Union for the Conservation of Nature(IUCN)Red List of Threatened Species and is classified as a first category nationally protected bird species in *** this species'seasonal movements and migration will facilitate effective conservation to promote its *** tagged 27 Oriental Stork nestlings at Xingkai Lake on the Sanjiang Plain in Heilongjiang Province,China,used GPS tracking to follow them over the periods of 2014-2017 and 2019-2022,and confirmed their detailed migratory routes using the spatial analysis function of ArcGIS *** discovered four migration routes during autumn migration:one common long-distance migration route in which the storks migrated along the coastline of Bohai Bay to the middle and lower reaches of the Yangtze River for wintering,one short-distance migration route in which the storks wintered in Bohai Bay and two other migration routes in which the storks crossed the Bohai Strait around the Yellow River and wintered in South *** were no significant differences in the number of migration days,residence days,migration distances,number of stopovers and average number of days spent at stopover sites between the autumn and spring migrations(P>0.05).However,the storks migrated significantly faster in spring than in autumn(P=0.03).The same individuals did not exhibit a high degree of repetition in their migration timing and route selection in either autumn or spring *** storks from the same nest exhibited considerable between-individual variation in their migration *** important stopover sites were identified,especially in the Bohai Rim Region and on the Songnen Plain,and we further explored the current conservation status at these two important ***,our results contribute to the understanding of the annual migration,dispersal and protection status of the endangered Oriental Stork and provide a scientific bas

关键词： Autumn migration GPS tracking Oriental stork Repeatability Spring migration Stopover site

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Effect of direct current pulse stimulating acupoints of JiaJi (T10-L3) and Ciliao (BL 32) with Han's Acupoint Nerve Stimulator on labour pain in women: a randomized controlled clinical study

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Journal of Traditional Chinese Medicine 2015年第6期35卷 620-625页

作者： Liu Ye Xu Mingjun Che Xiangming He Junqin Guo Dandan Zhao Guosheng zhang guogang zhang Shuo Kang Kai zhang Chunlei Wang Yinan Li Shan zhang Qinglin Xu Li zhang Ming Han Bin Jing Yumiao zhang Ning Department of Anesthesiology Beijing Obstetrics and Gynecology Hospital Affiliated to Capital Medical University Department of Traditional Chinese Medicine Beijing Obstetrics and Gynecology Hospital Affiliated to Capital Medical University

OBJECTIVE: To assess the clinical effect and safety of direct current(DC) pulse produced by Han's Acupoint Nerve Stimulator in reduction(HANS) of labor ***: Totally 120 participants were enrolled in this clinical trial, and were randomly divided into4 groups including: HANS group, patient controlled intravenous analgesia(PCIA) group, patient-controlled epidural analgesia(PCEA) group and control group. The HANS group was treated by stimulating the acupoints of Jia Ji(T10-L3) and Ciliao(BL 32)with DC pulse of 100 Hz and 15-30 m A produced by a portable battery-powered Han's Acupoint Nerve Stimulator for 30 min. The PCIA group was intravenously infused Ondansetron(8 mg) for 5 min,then tramadol injection(1.5 mg/kg) was slowly dripped by using Baxter APⅡ electronic pump with50 m L tramadol(0.70%) + ondansetron(8 mg),background infusion 2 m L/h, PCA dose of 2 m L,lockout interval of 10 min. In PCEA group, women received intrathecal injection ropivacaine(3 mg) in L2-3, and epidural catheter was connected to Baxter APⅡ electronic pump, with 100 m L Ropivacaine(0.1%) and Sufentanil(50 ug), background infusion5 m L, Patient controlled analgesia(PCA) dose of 5m L, lockout interval of 10 min. The control group was not received analgesia. The visual analogue scale(VAS), stage and manner of labor, Apgar score of newborn, neonatal weights, oxytocin dosage,postpartum hemorrhage and side effects were monitored in all ***: The vital signs were all stable in the four analgesic groups. After analgesia, there was statistical difference in VAS score between HANS group and control group, between PCEA group and the control group, between PCIA group and control group. The analgesic effect in the PCEA group was significantly better than that of other two *** second stage of labor in the PCEA group was longer than the other three groups, showing significant difference between them. The Apgar score of newborn 1min after birth in the PCIA group was slightly lower than

关键词： Analgesia, patient-controlled Analge-sia, epidural Anesthesia Combined spinal and epi-dural block The Han's Acupoint Nerve Stimulator Randomized controlled trial

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Research progress on anticancer effects and molecular mechanisms of osthole

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Asian Journal of Traditional Medicines 2021年第1期16卷 53-62页

作者： Jiayi Bi Zixuan Gao guogang zhang Yu Chen School of Life Science and Biopharmaceutics Shenyang Pharmaceutical UniversityShenyang 110016China School of Traditional Chinese Materia Medica Shenyang Pharmaceutical UniversityShenyang 110016China

Cancer is a serious threat to human life and a big problem in clinical *** natural active substances extracted from Traditional Chinese Medicine can effectively inhibit the growth of cancer cells,which is a new direction for finding more effective anticancer *** is a natural coumarin compound extracted from Traditional Chinese Medicines such as Cnidium monnieri,Angelica pubescens and Peucedanum praeruptorum *** has significant inhibitory activity against a variety of *** paper summarizes the anticancer effects and molecular mechanisms of osthole in the treatment of cancers in recent years in order to provide references for further research.

关键词： osthole anticancer effects molecular mechanisms

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Characteristics of the Lower Yellow River channel shrinkage and its discriminant parameters

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Science China(Technological Sciences) 2010年第5期53卷 1374-1386页

作者： HU ChunHong1 & zhang guogang2 1 China Institute of Water Resources and Hydropower Research,Beijing 100038,China 2 Guangdong Electric Power Design Institute,Guangzhou 510663,China China Institute of Water Resources and Hydropower Research Beijing China Guangdong Electric Power Design Institute Guangzhou China

This paper analyzes the changing trends of the Lower Yellow River(LYR) transverse profile parameters and their aberrance points by the time series analysis *** results show that there has been a trend of changes in the LYR channel transverse profile parameters since the *** main river channel has a tendency of shrinkage year by year and the trend will be continued in the *** main features of the LYR channel shrinkage are remarkable reductions of bankfull dis-charges and bankfull areas,corresponding decreases of bankfull widths,average bankfull water depths and maximal bankfull water depths,as well as increases of bankfull water levels and width-depth ratios *** discriminant parameters for threshold of the LYR main channel shrinkage were put *** indicates that the LYR main channel began to shrink in the 1970s and has entered into a serious phase of channel shrinkage since the *** incompatible index of discharged water-sediment processes of the Sanmenxia Reservoir was introduced,which revealed that there was a trend of increasing in the incompatibility between water flow and sediment *** relations between the LYR main channel shrinkage parameters and discharged water-sediment processes of the Sanmenxia Reservoir were founded,which indicate that the LYR main channel shrinkage can be mitigated and improved through the regulation of discharged water-sediment processes of the reservoir,especially through the regulation of water-sediment incompatible *** LYR channel for water and sediment transportation can be restored and maintained.

关键词： Lower Yellow River time series analysis main river channel shrinkage discriminant parameters of channel shrinkage water-sediment incompatible index

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