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RAISING SIBERIAN TIGERS IN CAPTIVTTY IN NORTHEAST CHINA
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作者 Liu XinchenBreeding Center of Fetidac Animals. Hcr.gdaohczi. Heilongjiang Province. P R China 《Journal of Northeast Forestry University》 SCIE CAS CSCD 1990年第1期72-78,共7页
The Breeding Center of Felidac Animals was founded in Hengdaohezi.Heilongjiangprovince in 1986.This paper resents the methods and observauons of practices in feeding,mating,breeding,study and management of a captive p... The Breeding Center of Felidac Animals was founded in Hengdaohezi.Heilongjiangprovince in 1986.This paper resents the methods and observauons of practices in feeding,mating,breeding,study and management of a captive population of siberian tigers at the center.Since the es-tablishment of the program,the initial population of 5 males and 15 females has been increased to 48tigers.In the past 3 years.37 cubs were born and 28 survived.The averagc litter size was 2.6 in 1988and 2.8 in 1989.Methods of feeding mating and raising are continualluy modified according to obser-vations,experimental comparisons and program development.This program templ to conserve and renaturalize this rare and preeious species. 展开更多
关键词 ENDANGERED species. Siberian tiger. SPECIES conservation
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Interdecadal variability of summer precipitation in the Three River Source Region: Influences of SST and zonal shifts of the East Asian subtropical westerly jet 被引量:1
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作者 Yumeng Liu Xianhong Meng +5 位作者 Lin Zhao S-Y.Simon Wang Lixia Zhang Zhaoguo Li Chan Wang Yingying An 《Atmospheric and Oceanic Science Letters》 CSCD 2024年第5期47-53,共7页
Summer precipitation in the Three Rivers Source Region(TRSR)of China is vital for the headwaters of the Yellow,Yangtze,and Lancang rivers and exhibits significant interdecadal variability.This study investigates the i... Summer precipitation in the Three Rivers Source Region(TRSR)of China is vital for the headwaters of the Yellow,Yangtze,and Lancang rivers and exhibits significant interdecadal variability.This study investigates the influence of the East Asian westerly jet(EAWJ)on TRSR rainfall.A strong correlation is found between TRSR summer precipitation and the Jet Zonal Position Index(JZPI)of the EAWJ from 1961 to 2019(R=0.619,p<0.01).During periods when a positive JZPI indicates a westward shift in the EAWJ,enhanced water vapor anomalies,warmer air,and low-level convergence anomalies contribute to increased TRSR summer precipitation.Using empirical orthogonal function and regression analyses,this research identifies the influence of large-scale circulation anomalies associated with the Atlantic–Eurasian teleconnection(AEA)from the North Atlantic(NA).The interdecadal variability between the NA and central tropical Pacific(CTP)significantly affects TRSR precipitation.This influence is mediated through the AEA via a Rossby wave train extending eastward along the EAWJ,and another south of 45°N.Moreover,the NA–CTP Opposite Phase Index(OPI),which quantifies the difference between the summer mean sea surface temperatures of the NA and the CTP,is identified as a critical factor in modulating the strength of this teleconnection and influencing the zonal position of the EAWJ. 展开更多
关键词 Summer precipitation East asian subtropical westerly jet Three River Source Region Atlantic-Eurasian teleconnection
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KCNQ1 rs2237895 gene polymorphism increases susceptibility to type 2 diabetes mellitus in Asian populations 被引量:1
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作者 Dong-Xu Li Li-Ping Yin +4 位作者 Yu-Qi Song Nan-Nan Shao Huan Zhu Chen-Sen He Jiang-Jie Sun 《World Journal of Diabetes》 SCIE 2024年第3期552-564,共13页
BACKGROUND The association of single nucleotide polymorphism of KCNQ1 gene rs2237895 with type 2 diabetes mellitus(T2DM)is currently controversial.It is unknown whether this association can be gene realized across dif... BACKGROUND The association of single nucleotide polymorphism of KCNQ1 gene rs2237895 with type 2 diabetes mellitus(T2DM)is currently controversial.It is unknown whether this association can be gene realized across different populations.AIM To determine the association of KCNQ1 rs2237895 with T2DM and provide reliable evidence for genetic susceptibility to T2DM.METHODS We searched PubMed,Embase,Web of Science,Cochrane Library,Medline,Baidu Academic,China National Knowledge Infrastructure,China Biomedical Literature Database,and Wanfang to investigate the association between KCNQ1 gene rs2237895 and the risk of T2DM up to January 12,2022.Review Manager 5.4 was used to analyze the association of the KCNQ1 gene rs2237895 polymorphism with T2DM and to evaluate the publication bias of the selected literature.RESULTS Twelve case–control studies(including 11273 cases and 11654 controls)met our inclusion criteria.In the full population,allelic model[odds ratio(OR):1.19;95%confidence interval(95%CI):1.09–1.29;P<0.0001],recessive model(OR:1.20;95%CI:1.11–1.29;P<0.0001),dominant model(OR:1.27.95%CI:1.14–1.42;P<0.0001),and codominant model(OR:1.36;95%CI:1.15–1.60;P=0.0003)(OR:1.22;95%CI:1.10–1.36;P=0.0002)indicated that the KCNQ1 gene rs2237895 polymorphism was significantly correlated with susceptibility to T2DM.In stratified analysis,this association was confirmed in Asian populations:allelic model(OR:1.25;95%CI:1.13–1.37;P<0.0001),recessive model(OR:1.29;95%CI:1.11–1.49;P=0.0007),dominant model(OR:1.35;95%CI:1.20–1.52;P<0.0001),codominant model(OR:1.49;95%CI:1.22–1.81;P<0.0001)(OR:1.26;95%CI:1.16–1.36;P<0.0001).In non-Asian populations,this association was not significant:Allelic model(OR:1.06,95%CI:0.98–1.14;P=0.12),recessive model(OR:1.04;95%CI:0.75–1.42;P=0.83),dominant model(OR:1.06;95%CI:0.98–1.15;P=0.15),codominant model(OR:1.08;95%CI:0.82–1.42;P=0.60.OR:1.15;95%CI:0.95–1.39;P=0.14).CONCLUSION KCNQ1 gene rs2237895 was significantly associated with susceptibility to T2DM in an Asian population.Carriers of the C allele had a higher risk of T2DM.This association was not significant in non-Asian populations. 展开更多
关键词 Type 2 diabetes mellitus KCNQ1 rs2237895 Single nucleotide polymorphism asian populations
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Zircon U-Pb ages in the Nuratau ophiolitic mélange in the southern Tianshan,Uzbekistan:Implication for the closure of Paleo-Asian Ocean
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作者 Kai Weng Ji-fei Cao +3 位作者 Divayev-Farid Karibovich Jahongir-Jurabekovich Movlanov Bo Chen Zhong-ping Ma 《China Geology》 CAS CSCD 2024年第2期365-368,I0004-I0007,共8页
1.Objective The Central Asian Orogenic Belt(CAOB),which is located between the European craton,Siberian craton,and Tarim-North China craton(Fig.1a),is the largest phanerozoic accretionary orogen in the world.It result... 1.Objective The Central Asian Orogenic Belt(CAOB),which is located between the European craton,Siberian craton,and Tarim-North China craton(Fig.1a),is the largest phanerozoic accretionary orogen in the world.It resulted from the longterm subduction and accretion of the Paleo-Asian Ocean(PAO).The PAO has been in existence since at least the late Mesoproterozoic(about 1020 Ma).However,there has been debate about the closing time of the PAO. 展开更多
关键词 asian Paleo TIANSHAN
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Bleeding characteristics and mortality outcomes following ST-elevation myocardial infarction thrombolysis:a 5-year analysis in an Asian population
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作者 Hock Peng Koh Jivanraj RNagarajah +1 位作者 Hasnita Hassan Noel Thomas Ross 《World Journal of Emergency Medicine》 SCIE CAS CSCD 2024年第6期433-440,共8页
BACKGROUND:Bleeding outcomes are crucial primary safety endpoints in studies involving thrombolytic agents.This study aimed to determine the incidence,characteristics and mortality outcomes of bleeding following ST-el... BACKGROUND:Bleeding outcomes are crucial primary safety endpoints in studies involving thrombolytic agents.This study aimed to determine the incidence,characteristics and mortality outcomes of bleeding following ST-elevation myocardial infarction(STEMI)thrombolysis in an Asian population.METHODS:This single-centre retrospective study included all STEMI patients who received thrombolytic therapy from 2016 to 2020 in a Malaysian tertiary hospital.Total population sampling was used in this study.The primary outcome was bleeding events post-thrombolysis,categorised using the Thrombolysis in Myocardial Infarction(TIMI)bleeding criteria.Inferential statistics were used to determine the associations between relevant variables.RESULTS:Data from 941 patients were analysed.A total of 156(16.6%)STEMI patients bled post-thrombolysis.Major,minor,and minimal TIMI occurred in 7(0.7%),17(1.8%),and 132(14.0%)patients,respectively.Age 65 years(P=0.031)and Malaysian Chinese(P=0.008)were associated with a higher incidence of bleeding post-thrombolysis.Conversely,foreigners(P=0.032)and current smoker(P=0.007)were associated with a lower incidence of bleeding.Both TIMI major(P<0.001)and TIMI minor(P<0.001)were associated with a higher incidence of all-cause in-hospital mortality among STEMI patients.TIMI minor bleeding was significantly higher in the streptokinase recipients.The bleeding sites were comparable between streptokinase and tenecteplase recipients,except for a significantly higher incidence of gastrointestinal bleeding in the streptokinase recipients(P=0.027).CONCLUSION:In our Asian population,the incidence of total bleeding events following STEMI thrombolysis is comparable to that previously reported.The development of TIMI major and minor bleeding complications is associated with higher mortality. 展开更多
关键词 BLEEDING ST-elevation myocardial infarction thrombolysis asian TENECTEPLASE STREPTOKINASE
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tigers and Flies
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作者 Jon Taylor 《ChinAfrica》 2014年第3期10-11,共2页
THE reforms in the Decision on Major Issues Concerning Comprehensively Deepening Reforms - as well as the actions on the part of the CPC and its Central Commission for Discipline Inspection (CCDI) since the election... THE reforms in the Decision on Major Issues Concerning Comprehensively Deepening Reforms - as well as the actions on the part of the CPC and its Central Commission for Discipline Inspection (CCDI) since the election of the new leadership in 2012 - clearly demonstrate a strong emphasis by the CPC on addressing corruption, building a clean government, and intensifying anti-corruption efforts by going after both "tigers" and "flies" - high- and low-ranking corrupt officials. The Decision highlights the determination of the Party to institutionalize anti-corruption efforts. 展开更多
关键词 CPC tigers and Flies
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Persistent Variations in the East Asian Trough from March to April and the Possible Mechanism
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作者 Shui YU Jianqi SUN 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2024年第4期737-753,I0002-I0004,共20页
The East Asian trough(EAT)profoundly influences the East Asian spring climate.In this study,the relationship of the EATs among the three spring months is investigated.Correlation analysis shows that the variation in M... The East Asian trough(EAT)profoundly influences the East Asian spring climate.In this study,the relationship of the EATs among the three spring months is investigated.Correlation analysis shows that the variation in March EAT is closely related to that of April EAT.Extended empirical orthogonal function(EEOF)analysis also confirms the co-variation of the March and April EATs.The positive/negative EEOF1 features the persistent strengthened/weakened EAT from March to April.Further investigation indicates that the variations in EEOF1 are related to a dipole sea surface temperature(SST)pattern over the North Atlantic and the SST anomaly over the tropical Indian Ocean.The dipole SST pattern over the North Atlantic,with one center east of Newfoundland Island and another east of Bermuda,could trigger a Rossby wave train to influence the EAT in March−April.The SST anomaly over the tropical Indian Ocean can change the Walker circulation and influence the atmospheric circulation over the tropical western Pacific,subsequently impacting the southern part of the EAT in March−April.Besides the SST factors,the Northeast Asian snow cover could change the regional thermal conditions and lead to persistent EAT anomalies from March to April.These three impact factors are generally independent of each other,jointly explaining large variations in the EAT EEOF1.Moreover,the signals of the three factors could be traced back to February,consequently providing a potential prediction source for the EAT variation in March and April. 展开更多
关键词 spring East asian trough sea surface temperature snow cover
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Provenance of Conglomerate and Sandstone from Early Permian Shoushangou Formation in Xi Ujimqin,Inner Mongolia:Implications for Understanding Paleo-Asian Ocean Subduction
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作者 ZHANG Yingli GUO Xianqing MA Shouxian 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2024年第1期10-31,共22页
During the Late Carboniferous to Early Permian,a rift was formed by post-collisional extension after ocean closure or an island arc-related basin formed by Paleo-Asian Ocean(PAO)subduction in the Xi Ujimqin area.Never... During the Late Carboniferous to Early Permian,a rift was formed by post-collisional extension after ocean closure or an island arc-related basin formed by Paleo-Asian Ocean(PAO)subduction in the Xi Ujimqin area.Nevertheless,the closure time of the PAO is still under debate.Thus,to identify the origin of the PAO,the geochemistry and U-Pb age of zircons were analyzed for the extra-large deep marine,polymict clastic boulders and sandstones in the Shoushangou Formation within the basin.The analyses revealed magmatic activity and tectonic evolution.The conglomerates include megaclasts of granite(298.8±9.1 Ma)and granodiorite porphyry(297.1±3.1 Ma),which were deposited by muddy debris flow.Results of this study demonstrated that the boulders of granitoids have the geochemistry of typical I-type granite,characterized by low Zr+Nb+Ce+Y and low Ga/Al values.The granitoid boulders were formed in island arc setting,indicating the presence of arc magmatism in the area that is composed of the Late Carboniferous to Early Permian subduction-related granitoid in southern Xi Ujimqin.Multiple diagrams for determining sedimentary provenance using major and trace elements indicate that Shoushangou sediments originated from continental island arc-related felsic rocks.Detrital zircon U-Pb age cluster of 330–280 Ma was obtained,indicating input from granite,ophiolite,Xilin Gol complex,and Carboniferous sources to the south.The basin was geographically developed behind the arc during the Early Permian period because the outcropped intrusive rocks in the Late Carboniferous to Early Permian form a volcanic arc.The comprehensive analyses of source areas suggest that Shoushangou sediments developed in a backarc basin in response to the northward subduction of the PAO.The backarc basin and intrusive rocks,in addition to previously published Late Carboniferous to Early Permian magmatic rocks of arc unit in Xilin Gol,confirm the presence of an Early Permian trencharc-basin system in the region,represented by the Baolidao arc and Xi Ujimqin backarc basin.This study highlights the importance and potential of combined geochemical and geochronological studies of conglomerates and sandstone for reconstructing the geodynamic setting of a basin. 展开更多
关键词 provenance analysis backarc basin Shoushangou Formation Early Permian Central asian Orogenic Belt
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A harmonisation approach to traditional Chinese medicine registration in Asian countries
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作者 Vivian S.W.Chan Fung 《Journal of Traditional Chinese Medical Sciences》 CAS 2024年第2期143-147,共5页
The traditional Chinese medicine(TCM)industry is critical to not only for public health but also for economic growth.According to the European Union(EU)directives,under the EU framework for(traditional)herbal medicina... The traditional Chinese medicine(TCM)industry is critical to not only for public health but also for economic growth.According to the European Union(EU)directives,under the EU framework for(traditional)herbal medicinal products,herbal medicines with long history of use can be registered in EU.However,there is a condition in this directive in which only those that have at least 10e15 years in the EU market are accepted for registration and/or marketing authorization.In author opinion,the condition of 10-15 years of use in EU countries set within the EU regulatory framework is with consideration of the genetic differences which can result in variation in adverse drug responses among different world populations.With this concept in mind,it is reasonable to project the principal of the EU directive to the Asian countries where TCM is originated.Countries like China,Singapore,Japan and South Korea that have well established drug registration framework are in best position in executing the best practice and facilitate harmonization of registration for TCM within the region.Furthermore,the registration process itself allows more safety and efficacy data to be collected systemically before and after product registration/marketing authorization.These are valuable information for future drug development.The therapeutic value of TCM is limitless,it has been left out in the EU regulatory framework,and the opportunity for it to be expanded and carried forward in modern medicines is shadowed by the limited number of TCM that are qualified to be registered under the EU regulatory framework.An early establishment of a harmonized risk-based registration process for TCM in Asian countries is important.This will strengthen the database to substantiate the history of safe use and further preserving and expanding the therapeutic values of TCM within and beyond the Asian region. 展开更多
关键词 Traditional Chinese medicines Population genetic HARMONIZATION REGISTRATION asian countries
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About Asian Agricultural Research
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《Asian Agricultural Research》 2024年第11期48-48,共1页
Asian Agricultural Research(ISSN 1943-9903),founded in 2009,is a monthly comprehensive agricultural academic journal published and approved by the Library of Congress of the United States of America.
关键词 AGRICULTURAL JOURNAL asian
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About Asian Agricultural Research
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《Asian Agricultural Research》 2024年第3期48-48,共1页
Asian Agricultural Research(ISSN 1943-9903),founded in 2009,is a monthly comprehensive agricultural academic journal published and approved by the Library of Congress of the United States of America.
关键词 AGRICULTURAL JOURNAL asian
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Community-Based Hepatitis B Campaign in Asian Americans
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作者 Chul S. Hyun Soonsik Kim +1 位作者 Sarah Hyun Joseph McMenamin 《International Journal of Clinical Medicine》 CAS 2024年第9期389-412,共24页
Chronic hepatitis B (CHB) disproportionately affects minority groups in the US, particularly Asian Americans, with numerous factors contributing to this disparity. Of the 2.4 million people living with chronic HBV in ... Chronic hepatitis B (CHB) disproportionately affects minority groups in the US, particularly Asian Americans, with numerous factors contributing to this disparity. Of the 2.4 million people living with chronic HBV in the US, 60% are Asian American. Many are unaware of their status and lack access to proper clinical care, with less than ten percent receiving necessary antiviral treatment. Barriers to screening and care include lack of disease awareness, language and cultural barriers, and financial constraints. Additionally, healthcare providers and systems in the US often overlook the importance of CHB, leading to inadequate care. In response, the Center for Viral Hepatitis (CVH) has implemented a community-based outreach program over the past sixteen years, employing a multifaceted approach involving all sectors of society and various organizations to combat health disparities in CHB. This grassroots campaign has proven highly effective, leveraging CVH’s leadership in spearheading numerous collaborative activities with community members, healthcare professionals, and policymakers. We have summarized the key points of CVH's efforts and their significance in combating CHB-related health disparities. The CHB Screening and Awareness Campaign, tailored to the Asian American community, serves as a successful model for increasing CHB screening, linkage-to-care, and addressing socio-cultural barriers and health literacy. Insights from these outreach programs have guided the development of culturally relevant resources and education initiatives. These findings suggest that such community-driven approaches are essential for addressing health disparities. The strategies and outcomes of CVH’s efforts can inform future health initiatives for other minority communities in the US and globally. 展开更多
关键词 Chronic Hepatitis B (CHB) Hepatitis B Virus (HBV) Health Disparity Health Inequity asian Americans Cultural Competence in Healthcare Community-Based Screening Linkage-to-Care (LTC)
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The Hunter and the Tigers
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作者 妙妙 《小雪花(小学快乐作文)》 2004年第22期45-45,共1页
Sam’s father is a good hunter(猎人).One day,Sam and his father go hunting in the forest together.After a while they see a big tiger,and
关键词 The Hunter and the tigers
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THE TIGERS of PEMAKO
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作者 GEORGE B. SCHALLER 《China's Tibet》 2007年第1期36-39,3,共5页
About seven years have passed since we visited Pemako. I wonder if the deity Vajrayogini has protected Tibet's last tigers in this sacred hidden land.
关键词 THE tigers of PEMAKO
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Association between people’s attitudes towards human-elephant conflict and their locational,demographic,and socio-economic characteristics in Buxa Tiger Reserve and its adjoining area,India
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作者 Chiranjib NAD Tamal BASU-ROY 《Regional Sustainability》 2024年第1期11-25,共15页
“Human-elephant conflict(HEC)”,the alarming issue,in present day context has attracted the attention of environmentalists and policy makers.The rising conflict between human beings and wild elephants is common in Bu... “Human-elephant conflict(HEC)”,the alarming issue,in present day context has attracted the attention of environmentalists and policy makers.The rising conflict between human beings and wild elephants is common in Buxa Tiger Reserve(BTR)and its adjoining area in West Bengal State,India,making the area volatile.People’s attitudes towards elephant conservation activity are very crucial to get rid of HEC,because people’s proximity with wild elephants’habitat can trigger the occurrence of HEC.The aim of this study is to conduct an in-depth investigation about the association of people’s attitudes towards HEC with their locational,demographic,and socio-economic characteristics in BTR and its adjoining area by using Pearson’s bivariate chi-square test and binary logistic regression analysis.BTR is one of the constituent parts of Eastern Doors Elephant Reserve(EDER).We interviewed 500 respondents to understand their perceptions to HEC and investigated their locational,demographic,and socio-economic characteristics including location of village,gender,age,ethnicity,religion,caste,poverty level,education level,primary occupation,secondary occupation,household type,and source of firewood.The results indicate that respondents who are living in enclave forest villages(EFVs),peripheral forest villages(PFVs),corridor village(CVs),or forest and corridor villages(FCVs),mainly males,at the age of 18–48 years old,engaged with agriculture occupation,and living in kancha and mixed houses,have more likelihood to witness HEC.Besides,respondents who are illiterate or at primary education level are more likely to regard elephant as a main problematic animal around their villages and refuse to participate in elephant conservation activity.For the sake of a sustainable environment for both human beings and wildlife,people’s attitudes towards elephants must be friendly in a more prudent way,so that the two communities can live in harmony. 展开更多
关键词 Human-elephant conflict Elephant conservation Chi-square test statistics Binary logistic regression Demographic and socioeconomic characteristics Buxa tiger Reserve
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New Park a Roaring Success for Tigers
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作者 CHEN BIAN 《China Today》 1996年第7期46-47,共2页
NewParkaRoaringSuccessforTigersByCHENBIANFEWPEOPLEwouldcountonazootoinfluencethefateofChinaHengdaoziFelineBr... NewParkaRoaringSuccessforTigersByCHENBIANFEWPEOPLEwouldcountonazootoinfluencethefateofChinaHengdaoziFelineBreedingCenterwante... 展开更多
关键词 New Park a Roaring Success for tigers
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美国田纳西州教师评估模型TIGER的评介与启示
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作者 朱成 武小鹏 熊佳 《中小学课堂教学研究》 2024年第5期1-6,35,共7页
教师评估是促进教师专业发展和提高学校教育质量的有效手段。美国田纳西州教师教学成长的有效性和结果模型(TIGER)是在增值评价的基础上,结合标准化评价而开发的,从学生成绩、学生进步和课堂观察等三个方面对教师进行评估。评估的目的... 教师评估是促进教师专业发展和提高学校教育质量的有效手段。美国田纳西州教师教学成长的有效性和结果模型(TIGER)是在增值评价的基础上,结合标准化评价而开发的,从学生成绩、学生进步和课堂观察等三个方面对教师进行评估。评估的目的是通过整合具有高可靠性和有效性的定量和质性评价方法来促进教师的成长。这种教师评估模式反映了美国教师评价的新趋势,对我国新时代教师评价的目的、方法、主体和体系有重要的参考价值。 展开更多
关键词 教师评价 tiger 增值评价 质性评价
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Revisiting East Asian monsoon change during the Last Glacial Maximum using PMIP4 simulations
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作者 Zhiping Tian 《Atmospheric and Oceanic Science Letters》 CSCD 2024年第3期47-52,共6页
利用PMIP4多模式试验数据,本文重新检查了末次冰盛期(距今约21000年)东亚季风变化.结果表明:相对于工业革命前期,所有5个模式一致模拟显示末次冰盛期东亚季风减弱,冬季和夏季减幅分别为1%-18%和2-32%;不同模式中东亚季风环流变化的空间... 利用PMIP4多模式试验数据,本文重新检查了末次冰盛期(距今约21000年)东亚季风变化.结果表明:相对于工业革命前期,所有5个模式一致模拟显示末次冰盛期东亚季风减弱,冬季和夏季减幅分别为1%-18%和2-32%;不同模式中东亚季风环流变化的空间分布存在差异,这主要源于该时期大尺度变冷和海平面气压梯度变化的空间分布不同;由于模式之间的差异和重建记录之间的不确定性,未来有待开展更多模拟和重建工作以更好地理解冰期东亚季风变化. 展开更多
关键词 末次冰盛期 东亚冬季风 东亚夏季风 PMIP4试验
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The Enhancement of the East Asian Summer Monsoon over Northeast Asia over the Most Recent Two Decades
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作者 Song JIANG Shuangmei MA +3 位作者 Congwen ZHU Boqi LIU Ting WANG Wanyi SUN 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2024年第12期2354-2366,I0002-I0004,共16页
The East Asian summer monsoon in Northeast Asia(NEA)has experienced an increase in summer rainfall and a delayed end to the rainy season after 2000,suggesting a trend of enhancement.Based on the data analyses spanning... The East Asian summer monsoon in Northeast Asia(NEA)has experienced an increase in summer rainfall and a delayed end to the rainy season after 2000,suggesting a trend of enhancement.Based on the data analyses spanning 1979-2022,our results show that the increased rainfall amounts are associated with a more pronounced Mongolian cyclone(MC)in July−August,a manifestation of a portion of the Eurasian barotropic Rossby wave train.Sea surface temperature(SST)anomalies in the North Atlantic(NA)regulate this wave train,with SST increases leading to its amplification.Somewhat independently,a delayed end to the rainy season in September is related to an enhanced anticyclone over the Kuril Islands(ACKI)in the Russian Far East.This anticyclone originates in the Arctic region,possibly induced by the loss of sea ice in the East Siberian Sea,a condition that can be detected two months in advance.The stronger MC and ACKI jointly contribute to the observed enhancement in the East Asian summer monsoon in NEA since 2000 by facilitating ascending motion and moisture transport.Therefore,the SST anomaly in the NA,which is responsible for the intensified rainfall in the rainy season in NEA,coupled with the sea ice conditions in the East Siberian Sea,provides a potential prediction source for the retreat of the rainy season. 展开更多
关键词 East asian summer monsoon rainfall over Northeast Asia North Atlantic SST sea ice loss in the East Siberian Sea
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The Process of Tiger Disappearance in Guizhou
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作者 Qin Yang Cheng Xu +1 位作者 Qingqing He Lingling Deng 《Research in Ecology》 CAS 2024年第1期28-39,共12页
In this paper,the authors collected officially published literature on the South China tiger(Panthera tigris amoyensis)in Guizhou from 1900 to 1980,from which we extracted information on its historical distribution an... In this paper,the authors collected officially published literature on the South China tiger(Panthera tigris amoyensis)in Guizhou from 1900 to 1980,from which we extracted information on its historical distribution and population size,and collected data on the tiger skin trade after 1950,the change in subtropical broad-leaved evergreen forest cover,and demographic data in the relevant databases.GIS mapping was used to visualize the distribution range of the South China tiger in Guizhou Province during the period 1900–1980 and to discuss the history of its disappearance in Guizhou and its driving factors.The results show that in 1900,the South China tiger was distributed throughout 82 cities and counties in nine prefectures and municipalities in the province;the number of documented South China tiger distribution sites in 1900–1950 decreased to 48 compared to 1900;the number of counties with South China tigers in 1950–1980 further decreased and became extinct in some areas;and in the 1990s,the South China tiger became extinct in the wild in Guizhou.The main reasons for the extinction of the South China tiger in the wild in Guizhou are:on the one hand,with the socio-economic development of Guizhou Province,the population has increased dramatically,the magnitude of the demand for natural resources has increased,and in order to satisfy this demand,human activities,such as coal mining and clearing of mountains for planting,have been intensified,resulting in the reduction of the coverage rate of the subtropical broad-leaved evergreen forests,which has resulted in the extreme loss of the habitat of the South China tiger;on the other hand,the insufficient protection efforts and protection measures for this species in the country before the 1980s,which were subjected to anthropogenic hunting,were also factors leading to the extinction of this species in the wild in Guizhou Province.As a big cat at the top of the food chain,the distribution of the South China tiger can reflect the history of the natural environment in the region.By analyzing and discussing the distribution history of the South China tiger population in Guizhou Province,the significance of this case is to provide a scientific basis for the future conservation of biodiversity and the development of ecological restoration measures in the karst mountains of southern China. 展开更多
关键词 The South China tiger DISAPPEARANCE Broad-leaved evergreen forests
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