检索结果-南通市图书馆

New insight into the origin and evolution of the flora and fauna of Hainan Island, China

Science China Earth Sciences 2025年第1期68卷 52-61页

作者： Hua ZHU center for Integrative Conservation Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Yunnan International Joint Laboratory of Southeast Asia Biodiversity Conservation Yunnan Key Laboratory for the Conservation of Tropical Rainforests and Asian Elephants

The origin of the biota of Hainan Island, China, remains a fundamental scientific problem. Comparative studies on the biota, geological tectonics, and paleomagnetism proposed that during the Eocene, Hainan Island connected Vietnam and Guangxi, and then moved to the southeast to reach its present location. This review mainly discusses its biota origin from molecular phylogeny and palaeobotanical research. The formation and evolution of the biological groups of Hainan Island were identified via research on their genomes, phylogeny, and molecular biogeography. This research showed that the genera and species that appeared and diverged early in their evolution(i.e., before the Miocene) can be explained by the land connection between Hainan Island, Vietnam, and Guangxi during the Eocene-Oligocene. According to Southeast asian tectonic theory, in the Middle Miocene(at about 15 million years ago), Hainan Island had moved to its present position. The population and genetic divergence of species with late divergence times(after 15 Ma) can be reasonably explained by the close proximity(or land connection) between Hainan Island and the Leizhou Peninsula, enabling genetic communication between Hainan Island and the Chinese mainland, but have exceptional cases. Conclusions have been obtained through palaeobotanical studies, showing that in the Eocene-Oligocene period, southwest China and Hainan Island had subtropical vegetation and flora. However, the fossil group in southeast China(in Maoming, near present-day Hainan Island) in the Late Eocene indicated a tropical rainforest vegetation and flora. This suggests that in the Paleogene, Hainan Island may have been located near or on the southwest border of Guangxi and northern Vietnam, rather than in its present location. The floristic division of the flora of Hainan Island basically presents a northeast-southwest inclined distribution pattern. This pattern can be explained by the counterclockwise rotation of Hainan Island during i

关键词： Molecular phylogeny Biogeography Paleobotany Origin of flora and fauna Hainan Island of China

来源：

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Are the fish of the upper and lower Mekong interconnected?

引用

Chinese Journal of Oceanology and Limnology 2009年第2期27卷 400-407页

作者：康斌 PERRETT Lisa 李运刚何大明 asian International Rivers center Yunnan University

The Mekong supports one of the richest inland fisheries in the world, with many of the fish migrating long distance to spawn. Little is known about the fisheries and migration strategies of the Upper Mekong whilst it is supposed that many fish species move between the Lower and Upper Mekong. Most likely, natural fish migration in the river has been altered by dam construction across the mainstream of the Upper Mekong. In this paper, the interconnectivity of fish species between different sections of the Mekong and negative impacts of dams on migratory fish are studied. Of the 162 fish species in the Upper Mekong and the 869 species in the Lower Mekong, 61 species are common. Results show that there is no significant difference at order level between the UM and LM. Similarity coefficients are used to evaluate interconnectivity at species, genus and family levels among four different sections of the Upper Mekong with each other and with the Lower Mekong as a whole. The highest similarity is found between the middle and lower reach of the Upper Mekong at species and genus levels and the middle and upper reach at family level. Of the eight cascade dams, Mengsong Dam in planning is considered as the biggest threat to migratory fish from the Lower Mekong and should be particularly concerned.

关键词： dam biodiversity migration Mekong interconnection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Near Range Radar and Its Application to Near Surface Geophysics and Disaster Mitigation

引用

Journal of Earth Science 2015年第6期26卷 858-863页

作者： Motoyuki Sato center for Northeast asian Studies Tohoku University

In this paper, we discuss about the near range radar applied to various environmental applications and disaster mitigation issues. Synthetic aperture radar（SAR） processing or migration is the key technology in near range radar imaging, which can be used in ground penetrating radar（GPR） and ground-based synthetic aperture radar（GB-SAR）. We demonstrate some applications which include GPR for humanitarian demining, GPR for archaeological survey, GB-SAR for landslide monitoring and nondestructive inspection of wooden buildings. We also demonstrate a new array GPR system “Yakumo”, which was used for archaeological survey for demonstration of advanced multi-static radar signal processing for better radar imaging.

关键词： near range radar GPR GB-SAR disaster mitigation SAR processing migration,multi-static radar.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Perinatal transmission in infants of mothers with chronic hepatitis B in California

引用

World Journal of Gastroenterology 2017年第27期23卷 4942-4949页

作者： Jennifer C Burgis Darryl Kong Catheryn Salibay Jennifer Zipprich Kathleen Harriman Samuel So Department of Pediatrics Stanford University California Department of Public health Immunization Branch asian Liver center Stanford University

To evaluate maternal hepatitis B virus (HBV) DNA as risk for perinatal HBV infection among infants of HBV-infected women in California. METHODSRetrospective analysis among infants born to hepatitis B surface antigen (HBsAg)-positive mothers who received post vaccination serologic testing (PVST) between 2005 and 2011 in California. Demographic information was collected from the California Department of Public health Perinatal Hepatitis B Program databaseand matched to birth certificate records. HBV DNA level and hepatitis B e antigen (HBeAg) status were obtained from three large commercial laboratories in California and provider records if available and matched to mother infant pairs. Univariate analysis compared infected and uninfected infants. Multivariate analysis was restricted to infected infants and controls with complete maternal HBV DNA results using a predefined high HBV DNA level of > 2 × 107 IU/mL, a 5:1 ratio of cases to controls and a two-sided confidence level of 95%. RESULTSA total of 17687 infants were born to HBsAg positive mothers in California between Jan 1 2005 and Dec 31, 2011. Among 11473 infants with PVST, only 125 (1.1%) were found to be HBV infected. Among these infected infants, lapses in Advisory Committee on Immunization Practices recommended post exposure prophylaxis (PEP) occurred in only 9 infants. However, PEP errors were not significantly different between infected and uninfected infants. Among the 347 uninfected and infected infants who had maternal HBeAg and HBV DNA level, case-control analysis found HBeAg positivity (70.4% vs 28.9%, OR = 46.76, 95%CI: 6.05-361.32, P 7 IU/mL (92.6% vs 18.5%, OR = 54.5, 95%CI: 12.22-247.55, P 7 IU/mL was the only significant independent predictor of perinatal HBV infection. CONCLUSIONIn California, tra

关键词： Perinatal transmission Hepatitis B virus DNA Pregnancy Hepatitis B Vaccination Post-vaccine serology testing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Medical training fails to prepare providers to care for patients with chronic hepatitis B infection

引用

World Journal of Gastroenterology 2015年第22期21卷 6914-6923页

作者： Stephanie D Chao Bing-Mei Wang Ellen T Chang Li Ma Samuel K So Department of Surgery Stanford University School of Medicine asian Liver center at Stanford University School of Medicine Palo Alto asian Liver center at Stanford University Stanford University School of Medicine Asian Liver Center at Stanford University School of Medicine Palo Alto Division of Epidemiology Department of Health Research and Policy Stanford University School of Medicine

AIM: To investigate physicians' knowledge including chronic hepatitis B(CHB) diagnosis, screening, and management in various stages of their ***: A voluntary 20-question survey was administered in Santa Clara County, CA where asian and Pacific Islanders(API) account for a third of the population. Among the 219 physician participants,there were 63 interns, 60 second-year residents, 26 chief residents and 70 attending physicians. The survey asked questions regarding respondents' demographics,general hepatitis B virus knowledge questions(i.e.,transmission, prevalence, diagnostic testing, prevention,and treatment options), as well as, self-reported practice behavior and confidence in ***: Knowledge about screening and managing patients with CHB was poor: only 24% identified the correct tests to screen for CHB, 13% knew the next steps for patients testing positive for CHB, 18% knew the high prevalence rate among API, and 31% knew how to screen for liver cancer. Wald chi-square analysis determined the effect of training level on knowledge; in all cases except for knowledge of liver cancer screening(p = 0.0032), knowledge did not significantly increase with length in residency training or completion of ***: Even in a high-risk region, both medical school and residency training have not adequatelyprepared physicians in the screening and management of CHB.

关键词： Liver cancer Hepatitis B asian PacificIslander Liver disease health disparity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transboundary eco-security and its regulation system in the Longitudinal Range-Gorge Region

引用

Chinese Science Bulletin 2007年第A2期52卷 1-9页

作者： HE DaMing LIU Jiang HU JinMing FEN Yan GAN Su asian International Rivers center Yunnan University Kunming 650091 China

这份报纸讨论了 transboundary eco 安全问题，他们的分发模式，特征和驱动力，和在纵的范围峡区域(LRGR ) 的规定系统。除了沙灰尘暴风雨，主要 transboundary eco 安全问题能在 LRGR 沿着中国的陆上的边阶区域被发现。直接驱动力包括... 详细信息

这份报纸讨论了 transboundary eco 安全问题，他们的分发模式，特征和驱动力，和在纵的范围峡区域(LRGR ) 的规定系统。除了沙灰尘暴风雨，主要 transboundary eco 安全问题能在 LRGR 沿着中国的陆上的边阶区域被发现。直接驱动力包括了串联水力发出的电力水坝，高速公路和国际航行开发的构造，斜坡陆地耕作和矿物质探索。Transboundary eco 安全问题沿着国际水路在陆上的区域，和下游的国家影响附近的区域。在邻国的生态的变化在 LRGR 在国内方面上有效果，例如种类侵略。综合措施应该被考虑，包括边阶 eco 保护工程和 transboundary 自然保护区的构造，生态的阀值安装，种类侵略控制，监视平台的 eco 安全的建立，组成生态的赔偿机制和法律(规则) 并且机构，和能力大楼。在 LRGR 处理 transboundary 问题的最重要的任务是国际性地形成参与合作机制，为 transboundary eco 安全建立资金，实现生态的赔偿策略，并且开发信息交换站台和警告系统。

关键词：生态系统纵向岭谷区分配模式生态安全

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

LUCC and its spatial expansion in frontier zone of the Longitudinal Range-Gorge Region

引用

Chinese Science Bulletin 2007年第A2期52卷 98-105页

作者： GAN Shu HE DaMing FENG Yan DENG QingYan CHEN WenHua asian Intemational Rivers center of Yunnan University Kunming 650091 China

我们作为学习区域选择了纵的范围峡区域( LRGR )的边疆地区，基于遥感和普通调查方法，使用的空间信息处理技术和分析方法得到的另外的相关信息监视的 LUCC 的数据收集，并且探索了 LUCC 风景“在这个特殊区域的 s 特征和它的空间扩大... 详细信息

我们作为学习区域选择了纵的范围峡区域( LRGR )的边疆地区，基于遥感和普通调查方法，使用的空间信息处理技术和分析方法得到的另外的相关信息监视的 LUCC 的数据收集，并且探索了 LUCC 风景“在这个特殊区域的 s 特征和它的空间扩大效果。这研究的目的是发现风景模式和它的变化趋势，并且在 LRGR 的边疆地区为生态学安全管理提供背景资料。主要结果如下：在森林作为风景矩阵是占优势的盖子类型的学习区域展览的 LUCC 模式，当另外的类型是补丁或马赛克元素时……在这个模式下面，因为在有时间变化的不同类型的转变，他们被自然环境状况，或由人的行动影响。所有当考虑他们天赋的不同层次时，沿着 LRGR 的边疆地区的县或城市，环境调节，社会经济发展地位和管理举止，证明 LUCC 空间扩大模式具有与仅仅认为距离是长度抵抗的不同的分区集聚特征。

关键词：纵向岭谷区空间延伸边境地区分析方法

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analysis and prediction of sediment trapping efficiencies of the reservoirs in the mainstream of the Lancang River

引用

Chinese Science Bulletin 2007年第A2期52卷 134-140页

作者： FU KaiDao HE DaMing asian International Rivers center Yunnan University Kunming 650091 China

存储的水和水库套住的沉积在下游的水路环境上导致物理、化学、生态的效果。关于水库沉积的量的研究是钥匙估计它的环境影响。在位于 Manwan 水库的 upstream 和 downstream 的计量车站在 39 年获得的沉积负担数据被用来估计 Manwan 水... 详细信息

存储的水和水库套住的沉积在下游的水路环境上导致物理、化学、生态的效果。关于水库沉积的量的研究是钥匙估计它的环境影响。在位于 Manwan 水库的 upstream 和 downstream 的计量车站在 39 年获得的沉积负担数据被用来估计 Manwan 水坝的套住的效率(TE ) 。TE 价值当时与用修改 Brune 和 Siyam 模型的估计相比。结果显示那：(1 ) 计量数据估计的 Manwan 水坝的 TE 是 60.48% ，并且两个都， TE 值由修改 Brune 计算了， Siyam 模型是 60.03% 。近似 TE 价值显示修改 Brune 和 Siyam 模型能被用来在 Lancang 河的主流作为 Manwan 水库与类似的存储能力预报另外的水库的 TE；(2 ) Gongguoqiao， Dachaoshan 和 Jinghong 水坝的 TE 价值是大约 30.23% ， 66.05% 和 63.50% 由修改 Brune 模型估计了，并且 38.81% ， 63.97% 和 62.30% 由修改 Siyam 当模特儿。在论文采用的结果和方法论能也被用来在西南的中国在另外的河盆估计 TE。

关键词：分析方法澜沧江水库沉积物

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Technical Approaches and in-vitro Evaluation Methods for Scalp Care

引用

China Detergent & Cosmetics 2018年第1期3卷 57-62页

作者： Akira Nomachi Yang Jianzhong asian Scalp health Research center

Scalp care is important in maintaining good conditions of scalp and hair. Key technical approaches for scalp care include reducing the chance of scalp inflammation, improving scalp defense, and activating hair follicle cells. As the cosmetics industry is moving toward to alternative methods to animal testing based on the 3 Rs(Replacement, Reduction and Refinement), in vitro methods will be widely used to evaluate the effects of scalp care. In this paper, we describe the detailed technical approaches for scalp care and the in vitro evaluation methods for skin irritation, anti-inflammation, barrier function, blood circulation, hair growth and male pattern hair loss prevention, respectively.

关键词： scalp health skin irritation scalp inflammation sebum barrier function hair growth hair loss

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Relationship between the zonal displacement of the western Pacific subtropical high and the dominant modes of low-tropospheric circulation in summer

引用

Progress in Natural Science:Materials International 2008年第2期18卷 161-165页

作者： Chan-Su Ryu center for asian Monsoon and Climate Environment Research Chosun University Gwangju Republic of Korea

The zonal displacement of the western Pacific subtropical high remarkably influences the climate anomalies in China. In this paper,a new zonal index of the subtropical high is defined by modifying previous indices,and is used to investigate the relationship between the zonal displacement of the subtropical high and the dominant modes of 850-hPa circulations. It is found that the zonal displacement of the subtropical high is significantly correlated with the first two leading modes of circulations. In particular,the correlation coefficient between the index and the time series associated with the second mode is as high as 0.78 in 1958-2003 (46 years). Since the second mode is not associated with significant anomalies of sea surface temperatures,the above results imply the diffculty in seasonal forecasting of the zonal displacement of the subtropical high. In addition,the interannual variability in the zonal displacement of the subtropical high has been considerably enhanced since 1978,due to the effects of both dominant modes,especially the second mode. This is likely to account for the frequent occurrence of anomalous climate in China during the recent two decades.

关键词： Western Pacific subtropical high General circulation Dominant mode Interannual variability Interdecadal variation

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：