检索结果-南通市图书馆

Tibetan Classical Literature and the *** of Congress:Preservation of Knowledge

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国藏学 1992年第S1期 361-372页

作者： susan Meinheit

Tibetan classical literature Of all the world’s rich classical literary traditions, that which is preserved in the literature ofTibet, is probably one of the most outstanding and also the least well--known. Of the thousands oftexts once available inside Tibet, only a fraction have been translated into Western languages, andthe number of trained scholars capable of making accurate translations is very small. Nonetheless,

关键词：罗山才艺

Breeding better cultivars,faster:applications of new technologies for the rapid deployment of superior horticultural tree crops

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

Horticulture Research 2014年第1期1卷 198-205页

作者： Steve van Nocker susan E Gardiner Department of Horticulture Michigan State UniversityEast LansingMI 48824 The New Zealand Institute for Plant&Food Research Limited Plant and Food Research Palmerston North Private Bag 11030 Manawatu Mail Centre Palmerston North4442New Zealand

Woody perennial plants,including trees that produce fruits and nuts of horticultural value,typically have long breeding cycles,and development and introduction of improved cultivars by plant breeders may require many breeding cycles and dozens of ***,recent advances in biotechnologies and genomics have the potential to accelerate cultivar development greatly in all *** mini-review summarizes approaches to reduce the number and the duration of breeding cycles for horticultural tree crops,and outlines the challenges that remain to implement these into efficient breeding pipelines.

关键词： cultivar breeding crops

New shape descriptor in the context of edge continuity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CAAI Transactions on Intelligence Technology 2019年第2期4卷 101-109页

作者： Seba susan Prachi Agrawal Minni Mittal Srishti Bansal Department of Information Technology Delhi Technological University Bawana Road Delhi 110042 India

The object contour is a significant cue for identifying and categorising objects. The current work is motivated by indicative researches that attribute object contours to edge information. The spatial continuity exhibited by the edge pixels belonging to the object contour make these different from the noisy edge pixels belonging to the background clutter. In this study, the authors seek to quantify the object contour from a relative count of the adjacent edge pixels that are oriented in the four possible directions, and measure using exponential functions the continuity of each edge over the next adjacent pixel in that direction. The resulting computationally simple, low-dimensional feature set, called as ‘edge continuity features’, can successfully distinguish between object contours and at the same time discriminate intra-class contour variations, as proved by the high accuracies of object recognition achieved on a challenging subset of the Caltech-256 dataset. Grey-to-RGB template matching with City-block distance is implemented that makes the object recognition pipeline independent of the actual colour of the object, but at the same time incorporates colour edge information for discrimination. Comparison with the state-of-the-art validates the efficiency of the proposed approach.

关键词： contour objects approach

Biased activity of soluble guanylyl cyclase:the Janus face of thymoquinone

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2017年第4期7卷 401-408页

作者： Charlotte Detremmerie Paul M.Vanhoutte susan Leung Department of Pharmacology and Pharmacy and State Key Laboratory for Pharmaceutical Biotechnology Li Ka Shing Faculty of Medicinethe University of Hong KongHong KongChina

The natural compound thymoquinone, extracted from Nigella sativa(black cumin), is widely used in humans for its anti-oxidative properties. Thymoquinone is known for its acute endotheliumindependent vasodilator effects in isolated rat aortae and pulmonary arteries, depending in part on activation of adenosine triphosphate-sensitive potassium channels and inhibition of voltage-dependent calcium channels. The compound also improves endothelial dysfunction in mesenteric arteries of ageing rodents and in aortae of rabbits treated with pyrogallol, by inhibiting oxidative stress. Serendipitously,thymoquinone was found to augment contractions in isolated arteries with endothelium of both rats and pigs. The endothelium-dependent augmentation it causes counterintuitively depends on biased activation of soluble guanylyl cyclase(sGC) producing inosine 3',5'-cyclic monophosphate(cyclic IMP) rather than guanosine 3',5'-cyclic monophosphate. This phenomenon shows a striking mechanistic similarity to the hypoxic augmentation previously observed in porcine coronary arteries. The cyclic IMP preferentially produced under thymoquinone exposure causes an increased contractility of arterial smooth muscle by interfering with calcium homeostasis. This brief review summarizes the vascular pharmacology of thymoquinone, focussing in particular on how the compound causes endothelium-dependent contractions by biasing the activity of sGC.

关键词： Thymoquinone Endothelium-dependentcontraction Nitric oxide Soluble guanylyl cyclase Cyclic IMP NADPH:quinone oxidoreductase

Contribution of national bioassessment approaches for assessing ecological water security： an AUSRIVAS case study

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

Frontiers of Environmental Science & Engineering 2013年第5期7卷 669-687页

作者： susan J. NICHOLS Fiona J. DYER Institute for Applied Ecology and MDBfutures CRN University of Canberra Canberra ACT 2601 Australia

River managers in Australia are managing in the face of extremes to provide security of water supply for people, production and the environment. Balancing the water requirements of people, environments and econo- mies requires that water security is viewed holistically, not just in terms of the water available for human consump- tion. Common definitions of water security focus on the needs of both humans and ecosystems for purposes such as drinking, agriculture and industrial use, and to maintain ecological values. Information about achieving water security for the environment or ecological purposes can be a challenge to interpret because the watering require- ments of key ecological processes or assets are not well understood, and the links between ecological and human values are often not obvious to water users. Yet the concepts surrounding river health are inherently linked to holistic concepts of water security. The measurement of aquatic biota provides a valuable tool for managers to understand progress toward achieving ecological water security objectives. This paper provides a comprehensive review of the reference condition approach to river health assessment, using the development of the Australian River Assessment System （AUSRIVAS） as a case study. We make the link between the biological assessment of river health and assessment of ecological water security, and suggest that such an approach provides a way of reporting that is relevant to the contribution made by ecosystems to water security. The reference condition approach, which is the condition representative of minimally disturbed sites organized by selected physical, chemical, and biological characteristics, is most important for assessing ecological water security objectives.

关键词： ecological water security biological assessment river health

Knockouts of high-ranking males have limited impact on baboon social networks

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

Current Zoology 2015年第1期61卷 107-113页

作者： Mathias FRANZ Jeanne ALTMANN susan C. ALBERTS Department of Biology Duke University Durham NC 27708-0719 USA Department of Ecology and Evolutionary Biology Princeton University Princeton NJ 08544-2016 USA

Social network structures can crucially impact complex social processes such as collective behaviour or the transmission of information and diseases. However, currently it is poorly understood how social networks change over time. Previous studies on primates suggest that ＇knockouts＇（due to death or dispersal） of high-ranking individuals might be important drivers for structural changes in animal social networks. Here we test this hypothesis using long-term data on a natural population of ba- boons, examining the effects of 29 natural knockouts of alpha or beta males on adult female social networks. We investigated whether and how knockouts affected （i） changes in grooming and association rates among adult females, and （2） changes in mean degree and global clustering coefficient in these networks. The only significant effect that we found was a decrease in mean degree in grooming networks in the first month after knockouts, but this decrease was rather small, and grooming networks re- bounded to baseline levels by the second month after knockouts. Taken together our results indicate that the removal of high-ranking males has only limited or no lasting effects on social networks of adult female baboons. This finding calls into question the hypothesis that the removal of high-ranking individuals has a destabilizing effect on social network structures in social animals [Current Zoology 61 （1）： 107-113, 2015].

关键词： Social network analysis Social network dynamics Knockouts Baboons

URBAN SUSTAINABILITY AND URBAN FORM METRICS

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 Green Building 2012年第2期7卷 44-63页

作者： susan Spencer Lewin CS&P Architects

INTRODUCTION A significant milestone was recently passed,with the majority of humankind now living in *** the first time in the history of our species,the immediate human environment will primarily be the built *** urbanization does not change the fact,however,that human beings ultimately remain dependent on the *** and their growth will necessarily become major drivers of environmental and ecological change,and global sustainable development will therefore be inextricably tied to the development of *** a global term,‘sustainability’attempts to balance myriad social,economic,and environmental factors,and is so complex in its application that a simple directive is useful to condense the *** Wheeler succinctly describes it,sustainable urban development‘improves the long term social and ecological health of cities and towns.’1 As cities are the major consumers of natural resources and the major producers of pollution and waste,it follows that if they can be designed and managed so that resource use and pollution are reduced,a major contribution to the solution of the global problem can be achieved.2 Urban areas will always be net consumers of resources,and major degraders of the environment,however,it may be possible to move toward a greater degree of *** question that this paper will address is whether the spatial built form of a city can affect its sustainability,what this relationship may entail,and what metrics might exist to help guide the growth of *** points of view will be explored,illustrating the lack of consensus that exists on certain‘truths.’The relative sustainability of,for example,high and low urban densities is still *** urban forms may appear to be more sustainable in some respects,for example in reducing travel,but detrimental in others,perhaps in harming the environment or producing social *** forms may be sustainable in a local sense,but

关键词： urban sustainability LEED-ND smart growth new urbanism

REGENERATIVE URBAN COMMUNITY DESIGN

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 Green Building 2013年第2期8卷 27-43页

作者： susan Spencer Lewin Sustainable Strategies at CS&P Architects Inc

INTRODUCTION Global sustainable development is inextricably tied to the development of cities,as accelerating growth in urban populations becomes a major driver of social,environmental and ecological *** are major consumers of natural resources and producers of pollution and *** solutions that can reduce urban environmental impacts,as well as increase urban quality of life,are urgently *** to ensure that rampant growth in urban communities follows a regenerative and sustainable path therefore becomes a critical and increasingly relevant question.

关键词： LEED ND urban sustainability metrics community design urban design urban regeneration sustainable redevelopment LEED Gold secondary school high performance school buildings LEED Gold multi-unit residential

The ecological consequences of temperament in spiders

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2012年第4期58卷 589-596页

作者： Jonathan N.PRUITT susan E.RIECHERT Department of Biological Sciences University of PittsburghPittsburghPennsylvania 15260USA Department of Ecology and Evolutionary Biology University of TennesseeKnoxville TN 37996-1610USA

Ecological and evolutionary studies on spiders have been featured prominently throughout the contemporary behavio- ral syndromes movement. Here we review the behavioral syndromes literature devoted to spiders, and identify some ways in which behavioral syndromes can impact the function of spiders in ecological communities. We further highlight three general themes within the behavioral syndromes literature for which spiders have served as front running model systems：（1） how trait correlations beget performance trade-offs, （2） the influence that behavioral trait variants have on interspecific interactions and （3） mechanisms that aid in maintaining behavioral variation within-and among-populations. Research on behavioral syndromes con-tinues to grow at an impressive rate, and we feel the success of behavioral syndromes studies in spiders bodes well for their con-tinued prominence.

关键词： Animal personality Behavioral type Behavioral syndrome Social insects Social spider