Population structure

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  • Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: This special issue of the Journal of Forest Science is a result of the international conference Species Diversity, Population Structure and Impact of Animals and...

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Density and population structure of the natural regeneration of Scots pine (Pinus sylvestris L.) in the High Ebro Basin (Northern Spain)...

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài:"Post-grazing Scots pine colonization of mid-elevation heathlands: population structure, impact on vegetation composition and diversity"

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Genetic variability and population structure of endangered Panax ginseng in the Russian Primorye...

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  • Many populations are composed of a mixture of individuals that reproduce at different times, and these times are often heritable. Under these conditions, gene flow should be limited between early and late reproducers, even within populations having a unimodal temporal distribution of reproductive activity. This temporal restriction on gene flow might be called ‘isolation by time’ (IBT) to acknowledge its analogy with isolation by distance (IBD). IBD and IBT are not exactly equivalent, however, owing to differences between dispersal in space and dispersal in time.

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  • The rapidly increasing global population has dramatically increased the demands for natural resources and has caused significant changes in quantity and quality of natural resources.To achieve sustainable resource management, it is essential to obtain insight- ful guidance from emerging disciplines such as landscape ecology.This text addresses the links between landscape ecology and natural resource management.These links are discussed in the context of various landscape types,a diverse set of resources,and a wide range ofmanagement issues.

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  • In engaging and conversational style, "Teaching About Evolution and the Nature of Science" provides a well-structured framework for understanding and teaching evolution. Written for teachers, parents, and community officials as well as scientists and educators, this book describes how evolution reveals both the great diversity and similarity among the Earth's organisms; it explores how scientists approach the question of evolution; and it illustrates the nature of science as a way of knowing about the natural world.

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  • The fishery of the Mekong River is one of the largest and most significant in the world, and most of the production is based on migratory river fishes. An earlier report provided an overview of the general patterns of fish migrations and their significance for management. This complementary report provides more detailed information on 40 key species which are significant in the Mekong River fishery. For each species we provide notes on distribution, feeding, size, population structure, critical habitats, life cycle and its importance in fisheries.

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  • Today, the world faces many problems. The most important problem is the population explosion. The population of 2.8 billion around 1945 doubled during the following 50 years, and it will approximately double again, reaching 10 billion during the next 50 years. This population increase will produce serious effects on worldwide food consumption and distribution; however, a sharp production increase in agricultural products cannot be expected.

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  • Service Robot Applications ..Service Robot Applica tions Edited by Service robotics is among the most promising technology dedicated to supporting the elderly since many countries are now facing aging populations coinciding with a decrease in the amount of the young working population. Service robots assist human beings, generally by performing dirty or tedious work, such as household chores. Service robots, in some cases, may replace human caretakers in their ability to care for elderly people. Yoshihiko Takahashi I-Tech .

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  • Some flow cytometers have the ability to physically separate different sub-populations of interest (cell sorting) depending on their cytometric characteristics (stream-in-air), thus permitting the recovery and purification of cell subsets from a mixed population for further applications (Bergquist et al., 2009; Davey, 2010).

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  • fast pace. As part of the structural adjustment programmes of the late 1980s and early 1990s Bangladesh undertook a number of initiatives towards trade liberalisation and trade promotion to stimulate exports and encourage investment in export-oriented activities. The major objective of these reforms was removal of anti-export bias, introduction of incentives for exports and facilitation of participation in global labour market.

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  • This book addresses the significant environmental changes experienced by high latitude and high altitude ecosystems at the beginning of the 21st century. Increased temperatures and precipitation, reduction in sea ice and glacier ice, the increased levels of UV-radiation and the long-range transported contaminants in arctic and alpine regions are stress factors that challenge terrestrial and aquatic ecosystems.

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  • The scope of this book is to demonstrate that we do have an ecosystem theory that can be used to describe ecosystem structure and function. It was previously shown in the book, Integration of Ecosystem Theories: A Pattern (3rd edition, 2002), that the various contributions to systems ecology are consistent and together form a pattern of ecological processes. My book with Yuri Svirezhev, Toward a Thermodynamic Theory of Ecosystems (2004), presented the thermodynamics of this pattern in a mathematical language....

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  • Future historians may well look upon the years 1978–80 as a revolutionary turning-point in the world’s social and economic history. In 1978, Deng Xiaoping took the first momentous steps towards the liberalization of a communist-ruled economy in a country that accounted for a fifth of the world’s population. The path that Deng defined was to transform China in two decades from a closed backwater to an open centre of capitalist dynamism with sustained growth rates unparalleled in human history....

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  • Information about plant genetic diversity is necessary for the development of appropriate strategies in conservation biology as well as in many other applied fields. From a basic evolutionary standpoint, genetic diversity is assumed to be crucial for the evolutionary potential of a species. Research programs that aim to investigate population structure provide evolutionary insights into the demographic patterns of diverse organisms (Milligan et al., 1994).

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  • Numerous U.S. REITs and other institutions have invested in real property connected to maquiladoras, retail development and tourism. This trend should persist because Mexico is ripe for continued investment. With respect to retail development, for example, there are fewer than 1,000 malls and shopping centers in Mexico, which has a population of approximately 110 million people. In comparison, there are more than 102,000 malls and shopping centers in the U.S., which has a population of approximately 306 million people.

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  • ‘Professions’ have been subject to a variety of theoretical schema that attempt to identify their unique characteristics or traits: the features that can be regarded as the basis for the discrimination between forms of occupational organization and control that are professional and those that are not (Saks, 1983; Abbott, 1988). This elaboration of the essential traits of professions is more than a professional discourse.

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  • Lenne, 1996) and to decrease damage by pests and pathogens (Cantelo & Sanford, 1984). In some crops (e.g. rice) this is applied on a large scale to maximize yield by minimizing damage by pathogens (Zhu et al., 2000). Information on genetic diversity and population structure also assists plant breeding in the selection of parents for crossing, providing a more rational basis for expanding the gene pool, and for identifying materials that harbor genes of value for plant improvement.

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  • Through its capacity to combine growth and inclusiveness, our social market economy is one of Europe's greatest assets. But today its economy and its society face the threat that the grave problems of high unemployment, increased poverty and social exclusion risk becoming structural. The EU dimension must be harnessed to assist Member States to find every opportunity to help people looking for work and to address the mismatch between labour supply and demand.

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