期刊文献+
共找到102,041篇文章
< 1 2 250 >
每页显示 20 50 100
From Research on TCM Images to Historiography of TCM Images——Comments on History of Chinese Image Culture:Medical Image Volume
1
作者 WEI Ran HUANG Zuozhen 《Chinese Medicine and Culture》 2024年第3期262-268,共7页
1 Introduction.Chinese medicine has a long and rich history,dating back to the classics of the Qin and Han dynasties and extending to the integration of Chinese and Western medicine in the modern era.The vast amount o... 1 Introduction.Chinese medicine has a long and rich history,dating back to the classics of the Qin and Han dynasties and extending to the integration of Chinese and Western medicine in the modern era.The vast amount of literature and scholarly works in this field makes it essential to thoroughly study the history of traditional Chinese medicine(TCM)in order to understand its development path throughout the ages and boost innovation based on tradition.This is why the sages emphasized the importance of“classifying the works into different schools and tracing back to their origins”(辨章学术,考镜源流). 展开更多
关键词 IMAGE TCM history
下载PDF
Correlation of personality with individual reproductive success in shrub-nesting birds depends on their life history style
2
作者 Jianchuan Li Wen Zhang +5 位作者 Ningning Sun Yujie Wang Lifang Gao Ran Feng Liqing Fan Bo Du 《Avian Research》 SCIE CSCD 2024年第1期42-49,共8页
Two questions in the research of animal personality—whether there is a correlation between a personality trait and individual reproductive success,and what is the genetic basis underlying a personality trait—remain ... Two questions in the research of animal personality—whether there is a correlation between a personality trait and individual reproductive success,and what is the genetic basis underlying a personality trait—remain unresolved.We addressed these two questions in three shrub-nesting birds,the Azure-winged Magpie(Cyanopica cyanus,AM),White-collared Blackbird(Turdus albocinctus,WB),and Brown-cheeked Laughingthrush(Trochalopteron henrici,BL).The personality type of an individual was first identified according to its response to a territorial intruder.Then,we compared the fleeing distance,breeding parameters,and differential expressed genes(DEGs) in the brain transcriptome between bold and shy breeders.In the three species,bold breeders exhibited more aggressiveness towards an intruder of their territory than did shy breeders.The reproductive success of bold breeders was significantly higher than that of shy breeders in AM but not in WB and BL.The three species shared one DEG,crabp1,which was up-regulated in bold relative to in shy individuals.By regulating the expression of corticotropin-releasing hormone,higher crabp1 gene expression can decrease cellular response to retinoic acid.Therefore,bold individuals are insensitive to external stresses and able to exhibit more aggressiveness to intruders than their shier counterparts.Aggressiveness is beneficial to bold individuals in AM but not in WB and BL because the former could evoke neighbors to make the same response of defending against intruders but the latter could not.Although a personality trait may have the same genetic basis across species,its correlation with reproductive success depends largely on the life history style of a species. 展开更多
关键词 BOLDNESS Life history style PERSONALITY Reproductive success Transcriptome analysis
下载PDF
Heterogeneity of mature oligodendrocytes in the central nervous system
3
作者 Chao Weng Adam M.R.Groh +4 位作者 Moein Yaqubi Qiao-Ling Cui Jo Anne Stratton G.R.Wayne Moore Jack P.Antel 《Neural Regeneration Research》 SCIE CAS 2025年第5期1336-1349,共14页
Mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous system.Recent evidence has challenged the classical view of the functio... Mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous system.Recent evidence has challenged the classical view of the functionally static mature oligodendrocyte and revealed a gamut of dynamic functions such as the ability to modulate neuronal circuitry and provide metabolic support to axons.Despite the recognition of potential heterogeneity in mature oligodendrocyte function,a comprehensive summary of mature oligodendrocyte diversity is lacking.We delve into early 20th-century studies by Robertson and Río-Hortega that laid the foundation for the modern identification of regional and morphological heterogeneity in mature oligodendrocytes.Indeed,recent morphologic and functional studies call into question the long-assumed homogeneity of mature oligodendrocyte function through the identification of distinct subtypes with varying myelination preferences.Furthermore,modern molecular investigations,employing techniques such as single cell/nucleus RNA sequencing,consistently unveil at least six mature oligodendrocyte subpopulations in the human central nervous system that are highly transcriptomically diverse and vary with central nervous system region.Age and disease related mature oligodendrocyte variation denotes the impact of pathological conditions such as multiple sclerosis,Alzheimer's disease,and psychiatric disorders.Nevertheless,caution is warranted when subclassifying mature oligodendrocytes because of the simplification needed to make conclusions about cell identity from temporally confined investigations.Future studies leveraging advanced techniques like spatial transcriptomics and single-cell proteomics promise a more nuanced understanding of mature oligodendrocyte heterogeneity.Such research avenues that precisely evaluate mature oligodendrocyte heterogeneity with care to understand the mitigating influence of species,sex,central nervous system region,age,and disease,hold promise for the development of therapeutic interventions targeting varied central nervous system pathology. 展开更多
关键词 aging central nervous system diseases electron microscopy HETEROGENEITY immunohistochemistry myelin sheath natural history NEUROGLIA OLIGODendROGLIA single-cell gene expression analysis
下载PDF
The history, hotspots, and trends of electrocardiogram 被引量:4
4
作者 Xiang-Lin YANG Guo-Zhen LIU +7 位作者 Yun-Hai TONG Hong YAN Zhi XU Qi CHEN Xiang LIU Hong-Hao ZHANG Hong-Bo WANG Shao-Hua TAN 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2015年第4期448-456,共9页
The electrocardiogram (ECG) has broad applications in clinical diagnosis and prognosis of cardiovascular disease. Many researchers have contributed to its progressive development. To commemorate those pioneers, and ... The electrocardiogram (ECG) has broad applications in clinical diagnosis and prognosis of cardiovascular disease. Many researchers have contributed to its progressive development. To commemorate those pioneers, and to better study and promote the use of ECG, we reviewed and present here a systematic introduction about the history, hotspots, and trends of ECG. In the historical part, information including the invention, improvement, and extensive applications of ECG, such as in long QT syndrome (LQTS), angina, and myocardial infarction (MI), are chronologi- cally presented. New technologies and applications from the 1990s are also introduced. In the second part, we use the bibliometric analysis me- thod to analyze the hotspots in the field of ECG-related research. By using total citations and year-specific total citations as our main criteria, four key hotspots in ECG-related research were identified from 11 articles, including atrial fibrillation, LQTS, angina and MI, and heart rate variability. Recent studies in those four areas are also reported. In the final part, we discuss the future trends concerning ECG-related research. The authors believe that improvement of the ECG instrumentation, big data mining for ECG, and the accuracy of diagnosis and application will be areas of continuous concern. 展开更多
关键词 ELECTROCARDIOGRAM history HOTSPOTS REVIEW TRendS
下载PDF
Introduction to Urban and Community Forestry in the United States of America: History, Accomplishments, Issues and Trends 被引量:3
5
作者 Qi Yadong Zhang Zhiqiang 《Forestry Studies in China》 CAS 2003年第4期54-61,共8页
The urban and community forestry movement in the United States has matured over the last 20 years from managing street trees, to understanding the benefits of trees in urban ecosystems, and now to managing urban green... The urban and community forestry movement in the United States has matured over the last 20 years from managing street trees, to understanding the benefits of trees in urban ecosystems, and now to managing urban green infrastructure. This paper introduced the history, development, and major accomplishments of the urban and community forestry movement, highlighted the economic, ecological, environmental, and social values of forests and trees to communities, and discussed issues and trends of the urban and community forestry program in the United States. 展开更多
关键词 urban and community forestry urban forest benefits and values history accomplishments ISSUES trends United States
下载PDF
Dependence of viscosity of Cu_9In_4 intermetallics melt on thermal history 被引量:1
6
作者 CHENG Sujuan WANG Zhonghua +1 位作者 BIAN Xiufang SUI Xuepu 《Rare Metals》 SCIE EI CAS CSCD 2006年第1期27-31,共5页
The temperature dependence of the dynamic viscosity of Cu9In4 intermetallics melt has been investigated in five kinds of different heating and cooling processes with a torsional oscillation viscometer, It has been fou... The temperature dependence of the dynamic viscosity of Cu9In4 intermetallics melt has been investigated in five kinds of different heating and cooling processes with a torsional oscillation viscometer, It has been found that the viscosity of all Cu9In4 intermetallics decreases with increasing temperature in five kinds of different thermal processes. Thermal history has considerable effect on the viscosity. The viscosity in the cooling process with high superheating is greater than that in the cooling process with low superheating. The viscosity in the heating process is greater than that in the cooling process. No anomalous change in viscosity is measured in three kinds of cooling processes with low superheating. The anomalous change occurs at about 1050℃ in cooling with high superheating and at 800℃ in heating. Furthermore, the structural variation in different thermal processes has also been discussed on the basis of the change in viscosity and DSC analysis. 展开更多
关键词 liquid structure VISCOSITY torsional oscillation viscometer Cu9In4 intermetallics thermal history
下载PDF
Life-history dependent relationships between plasma alkaline phosphatase activity and body condition in male Eurasian Tree Sparrows 被引量:1
7
作者 Yuliang Zhao Lingjuan Gong +3 位作者 Baohua Zhao Xuebin Gao Yuefeng Wu Dongming Li 《Avian Research》 CSCD 2017年第3期163-167,共5页
Background: In temperate-breeding birds, individuals must adjust their physiological states from one life-history stage to another in response to changing conditions to maximize ecological fitness. Previous evidences ... Background: In temperate-breeding birds, individuals must adjust their physiological states from one life-history stage to another in response to changing conditions to maximize ecological fitness. Previous evidences have shown that body mass, size-corrected mass(SCM), and hematocrit(Hct) could be used as estimates of the energetic state of individuals to illustrate life-history trade-offs and individual quality in field physiology. Plasma alkaline phosphatase(ALP) plays critical roles in regulating the metabolism of energy but very limited information is known on its link with body mass or Hct.Methods: We determined the changes of plasma ALP levels in both early breeding and wintering stages of male Eurasian Tree Sparrows(Passer montanus), and examined the relationships between ALP and body mass, SCM, and Hct of the birds.Results: Our study showed that(1) in male Eurasian Tree Sparrows, body mass did not vary with life-history stage but plasma ALP activity significantly increased in the wintering stage compared to the breeding stage;(2) ALP activity was not correlated with individual body mass but was positively correlated with individual SCM and Hct. Such positive correlations, however, only occurred in the wintering but not in the breeding stages.Conclusions: Our results suggest that plasma ALP activities in free-living birds can be used as one of the indicators o body condition or nutritional status for analyzing individual variation in the wintering but not in the breeding stages. The life-history dependent relationships between plasma ALP activity and body condition may contribute to our better understanding of the trade-off between individual survival and reproduction in free-living animals. 展开更多
关键词 Alkaline phosphatase Size-corrected mass HEMATOCRIT Passer montanus Life history Trade-off
下载PDF
Correcting the initialization of models with fractional derivatives via history-dependent conditions 被引量:1
8
作者 Maolin Du Zaihua Wang 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2016年第2期320-325,共6页
Fractional differential equations are more and more used in modeling memory(history-dependent,nonlocal,or hereditary) phenomena.Conventional initial values of fractional differential equations are define at a point,... Fractional differential equations are more and more used in modeling memory(history-dependent,nonlocal,or hereditary) phenomena.Conventional initial values of fractional differential equations are define at a point,while recent works defin initial conditions over histories.We prove that the conventional initialization of fractional differential equations with a Riemann–Liouville derivative is wrong with a simple counter-example.The initial values were assumed to be arbitrarily given for a typical fractional differential equation,but we fin one of these values can only be zero.We show that fractional differential equations are of infinit dimensions,and the initial conditions,initial histories,are define as functions over intervals.We obtain the equivalent integral equation for Caputo case.With a simple fractional model of materials,we illustrate that the recovery behavior is correct with the initial creep history,but is wrong with initial values at the starting point of the recovery.We demonstrate the application of initial history by solving a forced fractional Lorenz system numerically. 展开更多
关键词 Fractional derivative Differential equation Initial value Initial history
下载PDF
Opportunistic-tended life history traits of Siniperca kneri in the Three Gorges Reservoir,China: potential responses to impoundment
9
作者 ZHAO Shasha CHENG Fei +2 位作者 HOU Gang HU Zhengyu XIE Songguang 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2019年第2期694-705,共12页
Reservoir impoundment changes original fluvial habitats into lentic environments. Fish species adapted to lentic habitats may take the advantage of such habitat changes and show typical life history traits might facil... Reservoir impoundment changes original fluvial habitats into lentic environments. Fish species adapted to lentic habitats may take the advantage of such habitat changes and show typical life history traits might facilitate the population increase. Siniperca kneri rarely occurred in fishery landing in the Three Gorges Reservoir (TGR) area before its impoundment in 2003, but it is now a dominant species. In this study, a total of 438 females of S . kneri were collected monthly during September 2012 through January 2014 using gill nets in the TGR. The age, growth, and reproductive biology were then investigated, and compared with other S . kneri populations. The standard length at age 1 was 149.9 mm in the TGR, which is larger than the three compared populations (i.e., Sandaohe Reservoir, Xinfengjiang Reservoir, and North River), but smaller than one (the Guishi Reservoir). The youngest mature female in the TGR was age 1, which is younger than that of the two compared populations (i.e., Xinfengjiang Reservoir and the North River). The relative fecundity in the TGR was 140 eggs/g, which is higher than that of the only available compared population (Xinfengjiang Reservoir, 96 eggs/g). Our results demonstrated that S . kneri in the TGR tended to have faster growth in the first year, a younger age at first maturation, and higher reproductive eff ort. We suggest that such opportunistic-tended life history traits might facilitate rapid increase of the population. 展开更多
关键词 SINIPERCA kneri life history TRAITS OPPORTUNISTIC growth REPRODUCTION COLONIZATION
下载PDF
History-dependent Selection of Primary Dendritic Spacing in Directionally Solidified Alloy
10
作者 Linlin WANG Xin LIN Guolu DING Lilin WANG Weidong HUANG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2007年第2期242-246,共5页
Directional solidification experiments were carried out for succinonitrile-1.0 wt pct acetone alloy with the orientation of dendritic arrays being not parallel to the direction of the temperature gradient. Experimenta... Directional solidification experiments were carried out for succinonitrile-1.0 wt pct acetone alloy with the orientation of dendritic arrays being not parallel to the direction of the temperature gradient. Experimental results show that there exists an allowable range of primary dendritic spacing under a given growth condition.The average primary spacing depends not only on the current growth conditions but also on the way by which the conditions were achieved. The upper limit of the allowable range becomes smaller in comparison with that with 〈001〉 direction of dendrite arrays parallel to the direction of the temperature gradient, which means that the history-dependence of dendritic growth is weaker under this condition. The lower limit obtained is compared with a self-consistent model, which shows a good agreement with experimental results. 展开更多
关键词 Directional solidification Primary dendritic spacing history dependence
下载PDF
The enduring link between forest cover and rainfall: a historical perspective on science and policy discussions
11
作者 Brett M. Bennett Gregory A. Barton 《Forest Ecosystems》 SCIE CSCD 2018年第1期53-61,共9页
Background: This article traces the history of scientific ideas connecting forest cover with rainfall to inform ongoing debates about whether forests are net users or producers of water in the hydrological cycle. Sch... Background: This article traces the history of scientific ideas connecting forest cover with rainfall to inform ongoing debates about whether forests are net users or producers of water in the hydrological cycle. Scholars of the supply-side school argue that forests are net producers and magnifiers that increase rainfall at regional scales. Supply-side scholars seek to challenge the dominance of demand-side thinking. The demand-side school emphasizes that trees are net users of water within a catchment that decrease overall water available for other users. This scientific debate has significant implications for the development of policies to manage forests and water. Results: Scientists have debated the question of whether forests improve or worsen water balance for over two hundred years. Connections between forests and rainfall gained prominence in scientific circles during the second half of the nineteenth century and again during the past three decades. The popularity of forest- rainfall connections has paralleled societal and scientific interest in anthropogenic climate change and deforestation. Theories connecting forests with rainfall peaked in popularity in the 1850s to 1880s, a period when scientists expressed alarm that deforestation caused regional declines in precipitation. Forests were understood to create rain within a locality and region. Scientific consensus shifted by the early twentieth century to the view that forests did not play a significant role in determining rainfall. The forest-rainfall connection reemerged in the 1980s alongside advances in climate modelling and growing fears of anthropogenic global warming and tropical deforestation. Using new data and theories, supply-side advocates have once again placed a strong forest-rainfall connection into scientific prominence. Conclusion: Supply-side management policies have a checkered history that should elicit caution, while demand-side policies, which are based on almost a century of hydrological research, should not be overturned quickly in regions that face potential water scarcity before more research is conducted. 展开更多
关键词 Climate change Environmental history FORESTS HYDROLOGY RAIN Water
下载PDF
History and Present Situation of Traditional Chinese Medicine Made of Dendrobium
12
作者 Qingsheng SHUN Gang WEI Yajun WANG 《Medicinal Plant》 CAS 2018年第4期1-5,8,共6页
This paper aimed to review the origin and status of the traditional medicinal plants of Dendrobium called " Shihu" in Chinese. The medicinal herb named " Shihu" has developed from a single source t... This paper aimed to review the origin and status of the traditional medicinal plants of Dendrobium called " Shihu" in Chinese. The medicinal herb named " Shihu" has developed from a single source to multiple sources when there are thirty to forty plant species of Dendrobium that were granted as " Shihu" in traditional Chinese medicinal concept which makes the material market very complicated. After reviewing the historical records of these medicinal plants by many researchers and sorting out relevant studies for nearly 30 years,majority of the original species of this medicinal herb is learned,and the achievements can be reached in each version of Chinese Pharmacopoeia. Newly added content in2005 Chinese Pharmacopoeia described as " and its allied species" in " Shihu" section was debatable. The chemical constituents and pharmacological effects of Guchui Shihu( from D. chrysotoxum) were vastly different from the other Dendrobium species listed as " Shihu",so it should be listed as an independent item. Meanwhile,the study of quality standard of Huoshan Shihu( mainly from D. huoshanense) should be drawn seriously attention to,and the results should be included in Chinese Pharmacopoeia. 展开更多
关键词 DendROBIUM BREED history
下载PDF
Life History Traits and Mechanisms of Endangerment in Ranalisma rostratum
13
作者 Wang Jianbo,Chen Jiakuan, Li Rongqian(College of Life Sciences,Wuhan University,Wuhan 430072, China) 《Wuhan University Journal of Natural Sciences》 EI CAS 1998年第2期231-234,共4页
Ranalisma rostratum (Alismataceae) is an endangered aquatic plant, and now there is only one population existing in China. In its natural habitat, Huli marsh in Chaling, Hunan province, the best growing plants have be... Ranalisma rostratum (Alismataceae) is an endangered aquatic plant, and now there is only one population existing in China. In its natural habitat, Huli marsh in Chaling, Hunan province, the best growing plants have been observed at microsites where the water depth is 5~10cm, and the plants grow in emergent form.R. rostratum reproduces asexually or sexually. The recruitment of asexual propagules into population is a very important way to maintain the natural population size. Although seed production does not appear to limitR. rostratum, restricted dispersal of propagules and seeds, low seed viability, low germinability, slow growth of seedlings under all conditions, and habitat loss due to agriculture appear to be more important reasons for the endangerment of this plant. 展开更多
关键词 Key words Ranalism rostratum life history mechanism of endangerment
下载PDF
The Effect of Food Images on Mood and Arousal Depends on Dietary Histories and the Fat and Sugar Content of Foods Depicted
14
作者 Gregory J. Privitera Danielle E. Antonelli Heather E. Creary 《Journal of Behavioral and Brain Science》 2013年第1期1-6,共6页
Background: While brain imaging studies show that reward regions in the human brain that regulate reward-guided behavior and integrate sensory modalities of smell, taste, and texture respond preferentially to high cal... Background: While brain imaging studies show that reward regions in the human brain that regulate reward-guided behavior and integrate sensory modalities of smell, taste, and texture respond preferentially to high calorie foods, few studies account for dietary histories or account for recent behavioral evidence showing preferential responding for fruits (a low calorie food that tastes sweet). To address these concerns, the present study tested the hypothesis that images of high/low fat and sugar foods, even sugary foods that are low calorie (i.e., fruits), will enhance emotional responsiveness and that these changes may be related to dietary histories with fat and sugar intake. Method: Participants were shown 4 sets of 15 food images with each food image automatically timed every 9 s to transition to a new food image;participant pre-post mood and arousal was measured. The 4 sets of food images were high fat-high sugar (HFHS;desserts), high fat-low sugar (HFLS;fried foods), low fat-high sugar (LFHS;fruits), or low fat-low sugar (LFLS;vegetables) foods. To account for dietary histories, participants also completed estimated daily intake scales (EDIS) for sugar and fat. Results: Mood and arousal significantly increased in all groups, except Group LFLS, and even in a group that was low calorie but shown foods that taste sweet, i.e., Group LFHS. Interestingly, changes in arousal, but not mood, were dependent on participant histories with sugar and fat intake. Conclusion: Changes in emotional responsiveness to food images were nutrient-specific, which can be a more detailed level of analysis for assessing responsiveness to food images. Also, participant histories with sugar and fat should be taken into account as these histories can explain the changes in arousal observed here. 展开更多
关键词 FAT SUGAR MOOD AROUSAL DIETARY history
下载PDF
On the Historiographical Reform of General History of Chinese Science and Technologyin the Post-Needham Era
15
作者 Liu Shengli 《Contemporary Social Sciences》 2016年第2期145-155,共11页
The research of General History of Chinese Science and Technology(GHCST) has so far failed to transcend the"positivist history", a program of historiography initiated by Joseph Needham. The historians after ... The research of General History of Chinese Science and Technology(GHCST) has so far failed to transcend the"positivist history", a program of historiography initiated by Joseph Needham. The historians after Needham have made important explorations on the historiographical reform of GHCST. However, nearly all of these explorations are still the methodological reflections of the positivist history perspective, failing to reflect metaphysically on such historiographical presuppositions as views of science, technology and history, which means they have failed to break away from the positivist history perspective. To go beyond the limitations of positivist history calls for the introduction of the perspective of phenomenology of body and reflecting on and criticizing the historiographical presuppositions of positivist history on a metaphysical level. Such reflection will lead us to a new program of historiography in the post-Needham era, that is"phenomenal history"or the GHCST from the perspective of the phenomenology of body. 展开更多
关键词 GHCST J. Needham program of HISTORIOGRAPHY positivist history phenomenal history
下载PDF
Conservation genomic investigation of an endangered conifer,Thuja sutchuenensis,reveals low genetic diversity but also low genetic load 被引量:1
16
作者 Tongzhou Tao Richard IMilne +4 位作者 Jialiang Li Heng Yang Shiyang Wang Sihan Chen Kangshan Mao 《Plant Diversity》 SCIE CAS CSCD 2024年第1期78-90,共13页
Endangered species generally have small populations with low genetic diversity and a high genetic load.Thuja sutchuenensis is an endangered conifer endemic to southwestern China.It was once considered extinct in the w... Endangered species generally have small populations with low genetic diversity and a high genetic load.Thuja sutchuenensis is an endangered conifer endemic to southwestern China.It was once considered extinct in the wild,but in 1999 was rediscovered.However,little is known about its genetic load.We collected 67 individuals from five wild,isolated T.sutchuenensis populations,and used 636,151 SNPs to analyze the level of genetic diversity and genetic load in T.sutchuenensis to delineate the conservation units of T.sutchuenensis,based on whole transcriptome sequencing data,as well as target capture sequencing data.We found that populations of T.sutchuenensis could be divided into three groups.These groups had low levels genetic diversity and were moderately genetically differentiated.Our findings also indicate that T.sutchuenensis suffered two severe bottlenecks around the Last Glaciation Period and Last Glacial Maximum.Among Thuja species,T.sutchuenensis presented the lowest genetic load and hence might have purged deleterious mutations efficiently through purifying selection.However,distribution of fitness effects analysis indicated a high extinction risk for T.sutchuenensis.Multiple lines of evidence identified three management units for T.sutchuenensis.Although T.sutchuenensis possesses a low genetic load,low genetic diversity,suboptimal fitness,and anthropogenic pressures all present an extinction risk for this rare conifer.This might also hold true for many endangered plant species in the mountains all over the world. 展开更多
关键词 Sichuan Arborvitae Genetic load Deleterious mutations Demographic history Conservation genomics
下载PDF
Research on Chinese Medical History from a Global Perspective:Theory,Method,and Historical Materials
17
作者 高晞 《Chinese Medicine and Culture》 2023年第3期219-223,F0002,共6页
1 Research on the History of Chinese Medicine The years 2020 to 2023 are etched in stone for most of the world’s population,an era to feel the world with the body’s sense of pain,a prevail for a time knowledge of th... 1 Research on the History of Chinese Medicine The years 2020 to 2023 are etched in stone for most of the world’s population,an era to feel the world with the body’s sense of pain,a prevail for a time knowledge of the pandemic,and a time when physical responses will decide politics.Since the COVID-19 outbreak in 2020,academic exchanges between countries have been hampered;there are signs that globalization is getting to an end. 展开更多
关键词 history GETTING POLITICS
下载PDF
When History Becomes A Standing Joke:Mo Yan's Reflection on China's Historical Changes Throughout the 20th Century
18
作者 ZHANG Yong YANG Fang 《Journal of Literature and Art Studies》 2017年第7期783-791,共9页
Since the end of the 20th century, Mo Yan has made an attempt to reflect on China's historical changes throughout the 20th century as a whole. Centered on such several novels as Big Breasts and Wide Hips, Life and De... Since the end of the 20th century, Mo Yan has made an attempt to reflect on China's historical changes throughout the 20th century as a whole. Centered on such several novels as Big Breasts and Wide Hips, Life and Death Are Wearing Me Out and Frog, this paper explores the author's thinking of the interruption and repetition phenomena in China's 20th century history. Differing from viewing the history in a modem linear progressive perspective, Mo Yan regards the interruption of history as a sign of human degradation, which derives from the loss of folk history subjectivity. When history is treated rudely, its repetition will occur, and the one who treats history as laughingstocks will be written into history as part of a "farce". 展开更多
关键词 Mo Yan the 20th century interruption of history repetition of history
下载PDF
Historicity of Texts and Textuality of History On The Virginian From the Perspective of New Historicism
19
作者 LIU Jie-xiu 《Journal of Literature and Art Studies》 2014年第4期259-263,共5页
The Virginian: A Horseman of the Plains (1902) has been considered as one of the masterpieces of American western novels for its successful depiction of cowboys and local customs, which earns Owen Wister the Father... The Virginian: A Horseman of the Plains (1902) has been considered as one of the masterpieces of American western novels for its successful depiction of cowboys and local customs, which earns Owen Wister the Father of Western fiction. The paper aims to reveal the relationship between The Virginian and its historical context by applying the doctrines of New Historicism: historicity of texts and textuality of history. By historicity of texts, it points out that the work is the emblem of disappearance of western frontier, and it symbolizes the union of the Wild West and the civilized east. By textuality of history, it detects the change of social class, the development of livestock industry and railway, and their influence on the work at the later part of 19th century. 展开更多
关键词 The Virginian new historicism TEXT history
下载PDF
Barrett’s esophagus:Review of natural history and comparative efficacy of endoscopic and surgical therapies
20
作者 Kevin Kyung Ho Choi Santosh Sanagapalli 《World Journal of Gastrointestinal Oncology》 SCIE 2022年第3期568-586,共19页
Barrett's esophagus(BE)is the precursor to esophageal adenocarcinoma(EAC).Progression to cancer typically occurs in a stepwise fashion through worsening dysplasia and ultimately,invasive neoplasia.Established EAC ... Barrett's esophagus(BE)is the precursor to esophageal adenocarcinoma(EAC).Progression to cancer typically occurs in a stepwise fashion through worsening dysplasia and ultimately,invasive neoplasia.Established EAC with deep involvement of the esophageal wall and/or metastatic disease is invariably associated with poor long-term survival rates.This guides the rationale of surveillance of Barrett’s in an attempt to treat lesions at an earlier,and potentially curative stage.The last two decades have seen a paradigm shift in management of Barrett’s with rapid expansion in the role of endoscopic eradication therapy(EET)for management of dysplastic and early neoplastic BE,and there have been substantial changes to international consensus guidelines for management of early BE based on evolving evidence.This review aims to assist the physician in the therapeutic decision-making process with patients by comprehensive review and summary of literature surrounding natural history of Barrett’s by histological stage,and the effectiveness of interventions in attenuating the risk posed by its natural history.Key findings were as follows.Non-dysplastic Barrett’s is associated with extremely low risk of progression,and interventions cannot be justified.The annual risk of cancer progression in low grade dysplasia is between 1%-3%;EET can be offered though evidence for its benefit remains confined to highly select settings.High-grade dysplasia progresses to cancer in 5%-10%per year;EET is similarly effective to and less morbid than surgery and should be routinely performed for this indication.Risk of nodal metastases in intramucosal cancer is 2%-4%,which is comparable to operative mortality rate,so EET is usually preferred.Submucosal cancer is associated with nodal metastases in 14%-41%hence surgery remains standard of care,except for select situations. 展开更多
关键词 Barrett’s esophagus endoscopic eradication therapy DYSPLASIA ADENOCARCINOMA Natural history Radiofrequency ablation
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部