检索结果-南通市图书馆

Molecular phylogeny of Entomobrya (Collembola: Entomobryidae) from China: Color pattern groups and multiple origins

在线全文

学校读者我要写书评

暂无评论

Insect Science 2019年第3期26卷 587-597页

作者： Yin-Huan Ding Dao-Yuan Yu Wei-Bo Guo Jian-Nan Li Feng Zhang Department of Entomology College of Plant Protection Nanjing Agricultural University Nanjing China Department of Ecology College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing China Institute of Environmental Sciences under Ministry of Environmental Protection Nanjing China

Highly diversified colorations among springtails (Collembola) have been widely used for species diagnosis, but their phylogenetic significance is poorly known. We addressed this issue in the largest Entomobryinae genus Entomobrya, which possesses variable color patterns among species. The relationships within the genus and to other genera have also rarely been studied. Based on material mainly from China, we have conducted a multilocus phylogeny and topology tests with likelihood and Bayesian algorithms, and accordingly demonstrated the non-monophyly of Chinese Entomobrya. The division of five clades, including Entomobrya and several related genera, coincided well with five types of colorations, respectively. Further analyses of divergence time and historical biogeography revealed that Chinese Entomobrya originated mainly from Palearctic (northern and western) China in the Paleocene and Eocene. This study highlights the great phylo? genetic values as well as taxonomic uses of coloration in Chinese Entomobrya. Multiple phylogenetic and biogeographic origins of Entomobrya imply its complicated relationships with both scaled and unsealed genera of Entomobryinae.

关键词： coloration Entomobrya Entomobryinae non-monophyly Palearctic origins

Intriguing origins of Protein Lysine Methylation:Influencing Cell Function Through Dynamic Methylation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2019年第6期17卷 551-557页

作者： Natalie Mezey William C.S.Cho Kyle K.Biggar Institute of Biochemistry and Department of Biology Carleton UniversityOttawaON K1S 5B6Canada Department of Clinical Oncology Queen Elizabeth HospitalKowloonHong Kong Special Administrative RegionChina

Introduction“There is a kink(shoulder)on[the]Lys peak...”These words scribed in Richard P.Ambler’s laboratory notebook marked the discovery of protein methylation and a segue into a new field of scientific research[1].Initially,through ion-exchange chromatography and two-dimensional paper chromatography of the hydrolysate of Salmonella typhimurium flagellin,this“kink”was interpreted as a“new amino acid”,the e-Nmethyl-lysine(NML).This discovery,bolstered by a subsequent examination of purified NML,was the first glimpse of protein methylation in living cells[1].

关键词： Lys Intriguing origins of Protein Lysine Methylation:Influencing Cell Function Through Dynamic Methylation

Airway function throughout the lifespan: Pediatric origins of adult respiratory disease

在线全文

学校读者我要写书评

暂无评论

Pediatric Investigation 2019年第4期3卷 236-244页

作者： Julian Lewis Allen Division of Pulmonary Medicine The Perelman School of Medicine at the University of Pennsylvania and The Children's Hospital of PhiladelphiaPhiladelphiaPAUSA

Chronic obstructive pulmonary disease(COPD)is a leading cause of disability and death of adults in the USA and worldwide.While environmental factors such as smoking and air pollution are major contributors to COPD,pediatric respiratory disease and more specifically early childhood wheezing are frequent predisposing factors.It is therefore possible that aggressive prevention and treatment of childhood respiratory illness may modify adult COPD risk.This article reviews some of the physiological factors that may explain the pediatric origins of childhood lung disease.One such factor is the"tracking"of normal lung function which occurs with growth.The maximal expiratory flow volume(MEFV)curve is an ideally suited tool to monitor tracking of airway function over the lifespan,as its relative effort independence makes it highly reliable.Study of the MEFV curve has demonstrated that individuals with similar lung volumes can have large differences in maximal flows,reflecting a disconnection between airway and lung growth("dysanapsis").Less than average airway size due to dysanaptic airway growth or airway remodeling may be independent risk factors for the development of COPD and the asthma/COPD overlap syndrome in adult life.There are intriguing early data suggesting that perhaps at least some of this risk is modifiable by improving asthma control with inhaled corticosteroids and minimizing asthma exacerbations.

关键词： Chronic obstructive pulmonary disease(COPD) Asthma Asthma/COPD overlap syndrome Maximal expiratory Flow volume curve flow limitation equal pressure point Wavespeed theory Childhood origins Lung function tracking Dysanapsis Airway remodeling Prevention

Spatiotemporal switching signals for cancer stem cell activation in pediatric origins of adulthood cancer:Towards a watch-and-wait lifetime strategy for cancer treatment

在线全文

学校读者我要写书评

暂无评论

World Journal of Stem Cells 2018年第2期10卷 15-22页

作者： Shengwen Calvin Li Mustafa H Kabeer Neuro-oncology and Stem Cell Research Laboratory Children's Hospital of Orange County Department of Neurology University of California-Irvine School of Medicine Children's Hospital of Orange County Department of Surgery University of California-Irvine School of Medicine

Pediatric origin of cancer stem cell hypothesis holds great promise and potential in adult cancer treatment, however; the road to innovation is full of obstacles as there are plenty of questions left unanswered. First, the key question is to characterize the nature of such stem cells (concept). Second, the quantitative imaging of pediatric stem cells should be implemented(technology). Conceptually, pediatric stem cell origins of adult cancer are based on the notion that plasticity in early life developmental programming evolves local environments to cancer. Technologically, such imaging in children is lacking as all imaging is designed for adult patients. We postulate that the need for quantitative imaging to measure space-time changes of plasticity in early life developmental programming in children may trigger research and development of the imaging technology. Such quantitative imaging of pediatric origin of adulthood cancer will help develop a spatiotemporal monitoring system to determine cancer initiation and progression. Clinical validation of such speculative hypothesis-that cancer originates in a pediatric environment-will help implement a wait-andwatch strategy for cancer treatment.

关键词： Pediatric origins of adult cancer Imaging of single cells

AN INTRODUCTION TO THE NASA EAST PACIFIC origins AND CHARACTERISTICS OF HURRICANES(EPOCH) FIELD CAMPAIGN

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tropical Cyclone Research and Review 2015年第3期4卷 124-131页

作者： AMBER E.EMORY MATTHEW MCLINDEN MATHIAS SCHREIER GARY A.WICK NASA Goddard Space Flight Center GreenbeltU.S.A. Jet Propulsion Laboratory PasadenaU.S.A. NOAA Earth System Research Laboratory BoulderU.S.A.

Over the past fi ve years, tropical activity in the East Pacifi c has increased, while declining in the Atlantic Basin. In addition, during El Ni?o years, warmer than average sea surface temperatures further increase the likelihood of tropical cyclone formation in the East Pacifi c. Hurricane fi eld campaigns used the Ku-/Ka-band HighAltitude Wind and Rain Airborne Profi ler(HIWRAP) radar on the Global Hawk(GH) unmanned aircraft, in GRIP(Genesis and Rapid Intensifi cation Processes 2010), HS3(Hurricane and Severe Storm Sentinel 2012-14), and the NOAA Sensing Hazards with Operational Unmanned Technology(SHOUT 2015-16) fi eld campaigns. Although originally designed for the GH, the X-band high-altitude RADar(EXRAD) has yet to be integrated and fl own on an unmanned aerial vehicle. EXRAD will provide data with less attenuation of signal over deep convection as well as better estimates of three-dimensional winds with its nadir-pointing beam. As part of the NASA Hand On Project Experience(HOPE) Training Opportunity, our team proposed to fl y the AV-6 GH aircraft with the EXRAD radar, the High Altitude MMIC Sounding Radiometer(HAMSR), and NOAA Advanced Vertical Atmospheric Profi ling System(AVAPS) dropsondes to investigate genesis and/or rapid intensifi cation(RI) of an East Pacifi c hurricane by measuring both the environment and interior structures. Information on planned activities primarily focused on the EXRAD high-altitude radar integration for the July-August 2017 science fl ight will be presented.

关键词： GH FIELD CAMPAIGN AN INTRODUCTION TO THE NASA EAST PACIFIC origins AND CHARACTERISTICS OF HURRICANES EPOCH

origins of English and Chinese Idioms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

大观周刊 2012年第29期 246-247,213页

作者：张昊上海钢联电子商务股份有限公司上海201900

Both English and Chinese are rich in idioms. There is a similarity in theorigins of English and Chinese idioms, but on the one hand, owing to the different social background, customs, religious beliefs, geographic environment, differences are sure to appear in idioms.By comparing English and Chinese idioms from their origins, we could learn more about the relationship between idioms and culture,learning of English and the language as a whole,and have a better mastery of English.

关键词： origins culture idioms

The Mental origins and the Evolution of Political Order

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 Behavioral and Brain Science 2019年第6期9卷 211-245页

作者： Dingyu Chung Utica Michigan USA

The paper proposes that the four-component structure of political order consists of state, imagination, rule, and accountability whose mental origins are the social brain, theory of mind, the rational brain, and the empirical brain, respectively. The rational brain and the empirical brain are from the thinking brain. This paper posits that in the evolution of political order, the main function of political order is to pacify changed social structure derived from technological revolution. Therefore, the four technological revolutions (the Upper Paleolithic, Agricultural-Bronze, Iron, and Industrial Revolutions) produce the four changed social structures (linked bands, tribe, mega empire, and modern nation, respectively) whose internal conflicts are pacified by the four political revolutions (the imaginative, hierarchical, thinking, bottom-up political revolutions, respectively) to form the four politics (the imaginative egalitarianism, decentralized hierarchical tribalism, centralized top-down thinking, and multilateral bottom-up thinking politics, respectively). In the competitive West originated from Greece and Middle East, the rule of law is the rational rule of competition among competitors, and the accountability of election is the empirical accountability of competition among competitors. In the cooperative East originated from India and China, the rule of relation is the rational rule of cooperation among kin-friends, and the accountability of professional qualification is the empirical accountability of cooperation among kin-friends. For political order, the two viable politics are competitive liberal democracy based on liberty and cooperative well-off democracy (well-off socialism) based on wellbeing. The direction of political order is middle democracy between liberal democracy and well-off democracy based on the multilateral bottom-up thinking politics.

关键词： Political Order Evolution Mental origins Social Brain Political Brain Theory of Mind Politics Democracy

Functions of Rhetoric and Social Science origins in Communication Study—Based on Boxing Plato’s Shadow:An Introduction to the Study of Human Communication

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 Literature and Art Studies 2020年第3期10卷 255-270页

作者： WANG Hai HUANG Dai-ming Guangdong University of Foreign Studies Guangzhou510420China

With the development of the rhetoric study from the origins in ancient Athens and The Rhetoric of Aristotle to the formation of modern Communication Study at the beginning of the twentieth century,the Rhetoric Study changed in dynamic and its concepts and theories merged and formed the foundations of Communication Study which focused on personal communication and speech rhetoric skills at that time.At the beginning of the twentieth century,although the Neo-Aristotelian rhetorical scholars from classic rhetoric approach created methodologies and enriched the content of Communication Study under the influence of humanistic study and social science study,but the Communication discipline was still in the embarrassing position.During World War I and World War II,most scholars with backgrounds of social science,history and anthropology carried out the studies of propaganda wars and the message disseminating,and explored the military powers and governments’access to the media and developed serial communication modes from the social science perspective,which laid the foundation for Communication discipline in the academic field.The author analyzed the Rhetoric and Social Science origins of Communication study in Boxing Plato’s Shadow:an Introduction to the Study of Human Communication,which is beneficial and helpful to understand the academic origins of Communication study and its cross-disciplined and embarrassing positions.

关键词： the origins of communication study rhetoric origins social science origins Boxing Plato’s Shadow an introduction to the study of human communication

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The origins of food

新世纪智能 2019年第8期 37-39页

作者： Andy Keedwell 不详

Where does our food come from?Once upon a time carrots were purple, there were no pineapples in Asia or lemons in America, and many people thought potatoes were poisonous. Many types of fruit and vegetable grew only i... 详细信息

关键词： Activity The origins of food