检索结果-南通市图书馆

New dating indicates intermittent human occupation of the Nwya Devu Paleolithic site on the high-altitude central Tibetan Plateau during the past 45,000 years

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Earth sciences 2024年第2期67卷 531-551页

作者： Junyi GE Xiaoling ZHANG Shejiang WANG Linhui LI Wei HE Yingshuai JIN Peiqi ZhANG Bing XU Chenglong DENG John WOLSEN Zhengtang GUO Xing GAO Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of SciencesBeijing 100044China University of the Chinese Academy of sciences Beijing 100049China Tibetan Cultural Relics Conservation Institute Lhasa 850000China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of Sciences.Beijing 100029China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China school of Anthropology University of ArizonaTucson85721USA

The timing and mechanisms of the human occupation of the demanding high-altitude Tibetan Plateau environment are of great ***,we report on our reinvestigations and dating of the Nwya Devu site,located nearly 4600 meters above sea level on the central Tibetan Plateau.A new microblade techno-complex was identified on a lower lake shore at this site,distinct from the previously reported blade tool *** two lithic assemblages were dated to 45.6±2.6 and10.3±0.5 ka using optically stimulated luminescence and accelerator mass spectrometry^(14)C *** represent,respectively,the earliest known Paleolithic and microlithic sites on the interior Tibetan Plateau,indicating multiple occupation episodes of hunter-gatherers during the past 45 *** studies reveal that relatively stable depositional conditions and a paleoenvironment characterized by a comparatively warm climate facilitated these multiple occupations at Nwya *** contemporaneous occurrence of the Upper Paleolithic blade technology on the Tibetan Plateau and most of Eurasia between 50 and 40 ka indicates rapid,large-scale dispersals of humans that profoundly affected human demography on a large *** new archaeological evidence and previously reported genetic data,we conclude that the Tibetan Plateau provided a relatively stable habitat for Upper Paleolithic hunter-gatherers,which may have contributed to the complex and multiple-origin gene pool of present-day Tibetans.

关键词： Tibetan Plateau Paleolithic Nwya Devu High-altitude adaptation Microblade industry Early Upper Paleolithic OSLdating AMS^(14)C dating

Influence of Human Activity Intensity on Habitat Quality in Hainan Tropical Rainforest National Park,China

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2024年第3期34卷 519-532页

作者： HAN Nianlong YU Miao JIA Peihong ZHANG Yucheng HU Ke school of Geography and Tourism Huizhou UniversityHuizhou 516007China school of Public Administration Hainan Uni-versityHaikou 570228China Department of Land Surveying and Geo-Informatics The Hong Kong Polytechnic UniversityHong KongChina school of Geographic sciences and Remote Sensing Guangzhou UniversityGuangzhou 510006China school of Public Administration Nanjing Agricultural UniversityNanjing 210095China

Due to long-term human activity interference,the Hainan Tropical Rainforest National Park(HTRNP)of China has experienced ecological problems such as habitat fragmentation and biodiversity loss,and with the expanding scope and intensity of human activity impact,the regional ecological security is facing serious challenges.A scientific assessment of the interrelationship between human activity intensity and habitat quality in the HTRNP is a prerequisite for achieving effective management of ecological disturbances caused by human activities and can also provide scientific strategies for the sustainable development of the *** on the land use change data in 2000,2010,and 2020,the spatial and temporal variations and the relationship between habitat quality(HQ)and human activity intensity(HAI)in the HTRNP were explored using the integrated valuation of ecosystem services and trade-offs(InVEST)*** dynamics and land use simulation models were also combined to conduct multi-scenario simulations of their *** results showed that during 2000–2020,the habitat quality of the HTRNP improved,the intensity of human activities decreased each year,and there was a negative correlation between the ***,the system dynamic model could be well coupled with the land use simulation model by combining socio-economic and natural *** simulation scenarios of the coupling model showed that the harmonious development(HD)scenario is effective in curbing the increasing trend of human activity intensity and decreasing trend of habitat quality,with a weaker trade-off between the two compared with the baseline development(BD)and investment priority oriented(IPO)*** maintain the authenticity and integrity of the HTRNP,effective measures such as ecological corridor construction,ecological restoration,and the implementation of ecological compensation policies need to be strengthened.

关键词： human activity intensity(HAI) habitat quality(HQ) bivariate spatial autocorrelation system dynamics model integrated valuation of ecosystem services and trade-offs(InVEST)model Hainan Tropical Rainforest National Park(HTRNP)of China

Elevated brain temperature under severe heat exposure impairs cortical motor activity and executive function

在线全文

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2024年第2期13卷 233-244页

作者： Xiang Ren Tan Mary C.Stephenson Sharifah Badriyah Alhadad Kelvin W.Z.Loh Tuck Wah Soong Jason K.W.Lee Ivan C.C.Low Health and social sciences Singapore Institute of TechnologySingapore 138683Singapore Human Potential Translational Research Programme Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117597Singapore Centre for Translational Magnetic Resonance Research Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117549Singapore Department of Physiology Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117593Singapore Heat Resilience and Performance Centre Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117510Singapore N.1 Institute for Health National University of SingaporeSingapore 117456Singapore Campus for Research Excellence and Technological Enterprise(CREATE) Singapore 138602Singapore

Background:Excessive heat exposure can lead to hyperthermia in humans,which impairs physical performance and disrupts cognitive *** heat is a known physiological stressor,it is unclear how severe heat stress affects brain physiology and ***:Eleven healthy participants were subjected to heat stress from prolonged exercise or warm water immersion until their rectal temperatures(T_(re))attained 39.5℃,inducing exertional or passive hyperthermia,*** a separate trial,blended ice was ingested before and during exercise as a cooling *** were compared to a control condition with seated rest(normothermic).Brain temperature(T_(br)),cerebral perfusion,and task-based brain activity were assessed using magnetic resonance imaging ***:T_(br)in motor cortex was found to be tightly regulated at rest(37.3℃±0.4℃(mean±SD))despite fluctuations in T_(re).With the development of hyperthermia,T_(br)increases and dovetails with the rising T_(re).Bilateral motor cortical activity was suppressed during high-intensity plantarflexion tasks,implying a reduced central motor drive in hyperthermic participants(T_(re)=38.5℃±0.1℃).Global gray matter perfusion and regional perfusion in sensorimotor cortex were reduced with passive *** function was poorer under a passive hyperthermic state,and this could relate to compromised visual processing as indicated by the reduced activation of left lateral-occipital ***,ingestion of blended ice before and during exercise alleviated the rise in both T_(re)and T_(bc)and mitigated heat-related neural ***:Severe heat exposure elevates T_(br),disrupts motor cortical activity and executive function,and this can lead to impairment of physical and cognitive performance.

关键词： Brain functional activity Cognition Heat stress Hyperthermia Motor function

Functional Changes in Astrocytes Lead to Cognitive Deficits After social Deprivation

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2024年第4期40卷 547-549页

作者： Yulan Li Lixuan Li Yibei Wang Yi Wang Zhong Chen Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province School of Pharmaceutical SciencesZhejiang Chinese Medical UniversityHangzhou310053China Department of Neurology Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou310009ZhejiangChina

social experience has a far-reaching impact on the brain and *** humans,lacking social experience during childhood is associated with a faster decline in later-life cognitive function[l],while social isolation in the elderly is an independent risk factor for dementia[2].The lack of social experience at different stages of life has significant adverse effects on cognitive development and mental *** have largely been focused on the neuronal activity and synaptic plasticity changes after social *** recent studies separately reported increased expression of an astrocyte marker,glial fibrillary acidic protein,in socially isolated perinatal or adult mice demonstrating structural changes in astrocytes after social deprivation[3,4].However,it is still unknown whether and how astrocyte function is impacted by social deprivation.

关键词： faster function Functional

Does community-based health insurance affect lifestyle and timing of treatment seeking behavior?Evidence from Ethiopia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Global Health Journal 2024年第2期8卷 83-90页

作者： Zecharias Fetene Anteneh Anagaw D.Mebratie Zemzem Shigute Getnet Alemu Arjun S.Bedi Center for Health Economics University of YorkYorkUnited Kingdom school of Public Health College of Health SciencesAddis Ababa UniversityAddis AbabaEthiopia International Institute of social Studies Erasmus University Rotterdamthe Haguethe Netherlands Institute of Development and Policy Research Addis Ababa UniversityAddis AbabaEthiopia

Objectives This paper aims to investigate the effects of enrollment in the Ethiopian community-based health insurance(CBHI)scheme on household preventive care activities and the timing of treatment-seeking behavior for illness *** is growing concern about the financial sustainability of CBHI schemes in developing ***,few empirical studies have identified potential contributors,including ex-ante and ex-post moral *** We implement a household fixed-effect panel data regression model,drawing on three rounds of household survey data collected face to face in districts where CBHI scheme is operational and in districts where it is not operational in *** The findings show that enrolment in CBHI does not significantly influence household behaviour regarding preventive care activities such as water treatment before drinking and handwashing before ***,CBHI significantly increases delay in treatment-seeking behaviour for diseases ***,on average,we estimate about 4-6 h delay for malaria symptoms,a little above 4 h for tetanus,and 10-11 h for tuberculosis among the insured *** While there is evidence that CBHI improve the utilization of outpatient or primary care services,our study suggests that insured members may wait longer before visiting health *** delay could be partly due to moral hazard problems,as insured households,particularly those from rural areas,may consider the opportunity costs associated with visiting health facilities for minor ***,it is essential to identify the primary causes of delays in seeking medical services and implement appropriate interventions to encourage insured individuals to seek early medical attention.

关键词： Community-based health insurance Financial sustainability Preventive care Treatment-seeking behavior Household fixed effect Ethiopia

Research on the Path of Cultivating High-Level Technical and Skilled Talents in Vocational Undergraduate Colleges and Universities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Contemporary Educational Research 2024年第7期8卷 150-157页

作者： Kan Su Seong Pek Lim Linli Yao Faculty of Education and social sciences Universiti Selangor40000 Shah AlamSelangorMalaysia school of Communication Chengdu Vocational University of The ArtsChengdu 610000Sichuan ProvinceChina

This paper explores strategies to cultivate high-level technical talents in vocational undergraduate colleges by analyzing their development,the essence of such talents,and proposing several key *** include optimizing professional settings and curricula,enhancing school-enterprise cooperation and the integration of industry-university-research,improving teaching staff quality and educational standards,and expanding international *** importance of policy support and funding and establishing robust quality assurance systems is emphasized for effectively cultivating skilled talents in vocational undergraduate colleges.

关键词： Vocational undergraduate colleges High-level technical talents Professional setting Innovation and entrepreneurship education

Spatiotemporal mapping of(ultra‐)mafic magmatic mine areas:Implications of economic and political realities in China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Deep Underground Science and Engineering 2024年第1期3卷 91-102页

作者： Heling Li Liang Tang Tim T.Werner Zhengmeng Hou Fan Meng Jingjing Li College of Earth sciences Chengdu University of TechnologyChengduChina Institute of Subsurface Energy Systems Clausthal University of TechnologyClausthal ZellerfeldGermany school of Geography Earth and Atmospheric SciencesFaculty of ScienceThe University of MelbourneMelbourneVictoriaAustralia

The spatiotemporal extension/expansion of mine areas is affected by multiple *** far,very little has been done to examine the interaction between mine areas and political or economic ***(ultra‐)mafic magmatic mines in China played a specific role in supporting national development and providing an ideal research subject for monitoring their *** this study,remote sensing and mining‐related GIS data were used to identify and analyze 1233(ultra‐)mafic magmatic mine area polygons in China,which covered approximately 322.96 km2 of land and included a V–Ti–Fe mine,a copper–nickel mine,a chromite mine,an asbestos mine,and a diamond *** was found that(1)the areal expansion of mines is significantly related to the mine types,perimeter,topography,and population density.(2)The mine area variation also reflects market and policy *** temporal expansion of the mine area from 2010 to 2020 followed an S‐shaped pattern(with the turning point occurring in 2014),closely related to iron overcapacity and tightened mining policies.(3)The complexity(D)of the mine area may reflect mine design and excavation *** be specific,lower D indicates early‐stage or artisanal/small‐scale mining,whereas higher D represents large‐scale *** study demonstrates that the detailed mapping of mine land can serve as an indicator to implement miningrelated market and policy ***(ultra‐)mafic mines area data set can be accessed at https://***/record/7636616#.Y-p0uXaZOa0.

关键词： complexity mine area mining and socioeconomic interaction spatiotemporal distribution (ultra‐)mafic magmatic mine

Genetic benefits of female from extra-pair paternity are context dependent within the socially monogamous Tree Sparrow

在线全文

学校读者我要写书评

暂无评论

Avian Research 2024年第3期 395-401页

作者： Wenzhi Yang Yue Shen Yuquan Miao Zhaocun Lin Yingmei Zhang Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution School of Life Sciences Lanzhou University school of Life Science Ningxia University

Females actively seek extra-pair paternity(EPP) to acquire a fitness advantage for their offspring. The “contextdependence hypothesis” posits that female extra-pair mate choice has plasticity in response to environmental conditions, and therefore magnitude of female genetic benefits from EPP depends on the environmental variation. Furthermore, chronic heavy metal pollution can cause adverse effects on fitness-related traits of wild birds. However, few studies were available on the interactions between heavy metal pollution and EPP. We selected an area that was contaminated by heavy metals for more than 60 years(Baiyin, BY), a relatively unpolluted area(Liujiaxia, LJX), and Tree Sparrows(Passer montanus) as study species to explore the response of female extrapair mate choice and genetic benefits from EPP to heavy metal pollution in socially monogamous birds. The relatedness between social mates and extra-pair mates was investigated. Additionally, we compared the body size and heterozygosity of extra-pair offspring(EPO), within-pair offspring(WPO), social males and extra-pair males from the two Tree Sparrow populations. We found that at BY, female Tree Sparrows tended to choose extra-pair males with larger body size and lower genetic similarity, thereby producing higher heterozygosity and larger body size of EPO compared with those of WPO. However, no similar phenomenon was observed in the Tree Sparrow population from LJX. In addition, there was a significant interaction between population and paternity in the analyses of the fitness-related traits, suggesting that environmental variation could affect female genetic benefits from EPP. This study confirmed the existence of presumed interactions between environmental pollution and EPP within the natural population of socially monogamous Tree Sparrows. Our findings shed lights on the possible effects of long-term environmental stress on mating system in wild birds.

关键词：

Scarcity and Mental Health—Multiple Mediators of Sleep Quality and Life Satisfaction

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Mental Health Promotion 2024年第6期26卷 449-462页

作者： Na Liu Yan Zhang Junxiu Wang school of Sociology and Ethnology University of Chinese Academy of Social SciencesBeijing102488China Institute of Sociology Chinese Academy of Social ScienceBeijing100732China school of Mental Health Wenzhou Medical UniversityWenzhou325000China Institute of Psychosocial Services Kangning Hospital of Wenzhou Medical UniversityWenzhou325000China

Background:In the current social environment,scarcity,as a universally present objective state,profoundly impacts individuals’decision-making and health through the subjective feeling it induces,known as a“scarcity mindset.”Particularly,the feeling of scarcity related to money and sleep time is not only widespread but also directly linked to an individual’s mental ***:This study aims to delve into the relationship between the feeling of scarcity and mental health,with a specific focus on the relationship between the feeling of money scarcity or sleep time scarcity and mental health,as well as the role of sleep quality or life satisfaction in this ***:We determined the sampling quotas based on the population and economic development levels of each province in the“China Statistical Yearbook(2021)”(National Bureau of Statistics,2021).Participants were selected using the Probability Proportional to Size(PPS)sampling *** was collected by distributing online questionnaires to participants,and the relationships between the main variables were explored using structural equation ***:*** China,the feeling of sleep time scarcity is stronger than the feeling of money scarcity among the *** feeling of money scarcity is positively correlated with depression and anxiety,whereas the feeling of sleep time scarcity is only positively correlated with *** feeling of scarcity mainly leads to depression and self-denial through reducing life satisfaction,and it leads to anxiety through reducing sleep ***:The feeling of scarcity in money and sleep time is related to different dimensions of mental ***,reasonably planning financial allocation and ensuring an adequate amount of sleep can reduce the sense of scarcity,thereby improving mental ***,improving sleep quality and increasing life satisfaction can alleviate the adverse effects of scarcity on mental health.

关键词： Scarcity sleep quality life satisfaction mental health multiple mediators