Xem 1-20 trên 243 kết quả Plant health
  • Bacteria that associate with plants are diverse in their ability to affect plant health, their genotypic and phenotypic characteristics, and their phylogeny. These bacteria are typically members of complex microbial communities, with only a few establishing pure clonal populations within a plant.

    pdf716p quang93l 30-03-2014 52 16   Download

  • This paper uses sequential stochastic dominance procedures to compare the joint distribution of health and income across space and time. It is the first application of which we are aware of methods to compare multidimensional distributions of income and health using procedures that are robust to aggregation techniques. The paper’s approach is more general than comparisons of health gradients and does not require the estimation of health equivalent incomes. We illustrate the approach by contrasting Canada and the US using comparable data.

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  • The World Health Organization extends its appreciation of the generous support provided by the Government of the Grand Duchy of Luxembourg for the development and publication of these guidelines.

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  • This book aims to strengthen the knowledge base dealing with Air Pollution. The book consists of 21 chapters dealing with Air Pollution and its effects in the fields of Health, Environment, Economy and Agricultural Sources. It is divided into four sections. The first one deals with effect of air pollution on health and human body organs. The second section includes the Impact of air pollution on plants and agricultural sources and methods of resistance. The third section includes environmental changes, geographic and climatic conditions due to air pollution....

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  • Thermal power plants are one of the most important process industries for engineering professionals. Over the past few decades, the power sector has been facing a number of critical issues. However, the most fundamental challenge is meeting the growing power demand in sustainable and efficient ways.

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  • Invasive alien plants are harmful non-native plant species whose introduction or spread threatens the environment, the economy, and society, including human health. They can be introduced into Canada from other countries or continents, or from one region of Canada to another. The current threats posed by invasive alien plants are real and growing. Why are invasive alien plants a problem? The economic cost of invasive alien plants to Canadians is enormous. Weeds in crops and pastures alone cost an estimated $2.2 billion annually.

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  • This book is a response to that need for a synthesis. It contains 17 chapters, each prepared by authors who are internation- ally recognized for their knowledge and expertise in a particular area of soil/plant biology.

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  • The living organism which will be deeply affected are shredders, which feed on coarse sedimentary detritus, and collector-gatherers, which feed on fine sedimentary detritus, were the macroinvertebrate functional feeding groups are most adversely affected. Furthermore, during the industrial process, high amount of hydrofluoric acid (HF) are used to separate different sandy materials which are subsequently used for manufacturing glass at industrial plants. Therefore, high concentration of fluoride ion and suspended inorganic matter discharged by the industrial into the study site....

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  • “Be it deep or shallow, red or black, sand or clay, the soil is the link between the rock core of the earth and the living things on its surface. It is the foothold for the plants we grow. Therein lays the main reason for our interest in soils.” --- Roy W. Simonson, USDA Yearbook of Agriculture, 1957. The British naturalist Charles Darwin (1809–1882) was probably the first scientist to examine a soil profile and suggest factors responsible for the structure of the various layers.

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  • Plant species that invade an alien area and outgrow the native vegetation, establishing and increasing their own territory, often lead to negative economic, environmental, and social impacts. Even native species can behave like invasive species by their exponential spread. Similarly, not all non-native species are invasive. Many alien invasive species, however, do threaten the health and integrity of our terrestrial and aquatic ecosystems.

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  • How different levels of genetic variance affect the rate of evolutionary change within populations has also been intensively studied. Such changes were originally studied using phenotypic markers: variation among individual plants in traits, such as leaf shape or flower color (Ward et al., 2008). Subsequently the detection of genetic variation has become more sensitive, firstly through the utilization of variation in enzymes (allozymes) and then through PCR-based marker systems allowing direct examination of DNA sequence variation.

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  • The Wisconsin Family Health Survey (FHS) collects information about health insurance coverage, health status, health problems and use of health care services among Wisconsin residents. This survey began in 1989 and has been conducted annually since then. This report is based on responses collected in 2008, the same year that the BadgerCare Plus health insurance program was implemented (February 2008). The survey results presented in this report are representative of Wisconsin household residents, who constitute approximately 97 percent of all persons residing in the state.

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  • Adolescents, currently about 20 percent of the world’s population, have special reproductive health concerns and face risks related to early sexual experience, marriage and fertility. A rise in the age of marriage globally has contributed to declines in adolescent fertility. However, up to 50 percent of women in some countries still marry or enter a union by age 18, with this figure rising to 70 per- cent by age 20. The proportion of young women married or in union by age 20 is closely linked to adolescent fertility and exposure to reproductive health risks....

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  • "Bioactive Food Peptides in Health and Disease" highlights recent developments on bioactive food peptides for the promotion of human health and the prevention/management of chronic diseases. The book provides a comprehensive revision of bioactive peptides obtained from both animal and plant food sources. Aspects related to their bioactivity, mechanism of action, and bioavailability are extensively described along the different chapters.

    pdf276p phoebe75 19-02-2013 17 5   Download

  • Those alarmed at current health care costs and nostalgic for those of times gone by generally fail to appreciate that policy makers in the 1920s considered health care too costly and were concerned that the majority of American households lacked access to it. As late as 1910, “the cost of health care treatment was considered a minor problem compared to the loss of wages due to sickness for most workers.” 1 In the early 1900s, patients either lived or died.

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  • There is a theoretical concern that women with a short menstrual cycle may ovulate very early in their cycle, putting them at risk of pregnancy if starting contraception as late as Day 5 or Day 7 (LNG-IUS). There is no strong evidence to support or refute the risk but some sources of patient information (e.g. FPA) advise additional contraception for women in this situation if they have a cycle shorter than 23 days. Faculty guidance on postnatal sexual and reproductive health includes recommendations on starting contraceptive methods after childbirth.

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  • Although not specifically referred to as quick starting, previous Faculty guidance has advised that contraceptive methods can be started at any point in the menstrual cycle if a practitioner is reasonably certain that the woman is not currently pregnant (Box 1)8 or at risk of pregnancy. As sperm may be viable in the female reproductive tract for up to 7 days, health professionals should consider if a woman is at risk of becoming pregnant as a result of unprotected sexual intercourse (UPSI) within the last 7 days.

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  • The Animal Production and Health Section of the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture recognises that the trend towards intensification of livestock production in developing countries presents both opportunities and challenges. The potential opportunities are the flow-on benefits to the producers and local economy while the potential challenges are the flow-on costs to the environment, animal health and welfare.

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  • The magnitude of this relationship has important policy implications. If there is a positive effect of mother’s education as knowledge on children’s health, certain type of policies concerning the diffusion of specific information at community levels can be called for. For example, one important channel through which mother’s education as knowledge can affect child’s health at a community level is through the usage of health facilities which can serve as a complement or even as a substitute for the mother’s education.

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  • Starting contraception immediately, rather than waiting for the next menses, may theoretically reduce the time a woman is at risk of pregnancy; prevent her forgetting information on correct use of the method; prevent waning enthusiasm for the method and use of a less reliable alternative method; avoid patient costs and barriers to returning for contraception (e.g. transport, time, childcare) and reduce health care costs by reducing the number of appointments. Women who have taken EC or who have irregular cycles may have an even longer wait for their next menses.

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