Environmental medicine

Xem 1-20 trên 636 kết quả Environmental medicine
  • The past century has seen a tremendous expansion in the number of synthetic chemicals employed by humankind as materials, drugs, preservatives for foods and other products, pesticides, cleaning agents, and even weapons of war. An estimated 64,000 chemicals are currently in use commercially, with 5 billion tons being produced annually in the world. Some 4000 chemicals are used as medicinals and at least 1200 more as household products. An estimated 700 new chemicals are synthesized each year.

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  • Over the past several years, scientists, public health officials, and policy makers have become increasingly interested in understanding how the emergence and spread of infectious diseases could be affected by environmental factors, particularly variations in climate. In September 1995 the Institute of Medicine/ National Academy of Sciences and the National Science and Technology Council held a Conference on Human Health and Global Climate Change.

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  • The products of science and technology influence the lives of all citizens, including young adults. New means of communication and transportation, new ways of doing work and pursuing recreation, new foods and new medicines arrive almost daily. Science also engenders new ways of looking at the world and at other citizens. Likewise, science can raise concerns about moral and ethical values. Dealing with all such changes requires some resiliency.

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  • Molecular analysis is generally more informative if testing is initiated in a symptomatic family member, since the identification of a mutation can direct the testing of other at-risk family members (whether they are symptomatic or not). In the absence of additional familial or environmental risk factors, individuals who test negative for the mutation found in the affected family member can be informed that they are at general population risk for that particular disease. Furthermore, they can be reassured that they are not at risk for passing on the mutation to their children.

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  • Environmental engineering is the application of science and engineering principles to protect and utilise natural resources, control environmental pollution, improve environmental quality to enable healthy ecosystems and comfortable habitation of humans. It is based on multiple disciplines including geology, hydrology, biology, chemistry, physics, medicine, engineering, management, economics, law, etc.

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  • This volume is an eclectic mix of applications of Monte Carlo methods in many fields of research should not be surprising, because of the ubiquitous use of these methods in many fields of human endeavor. In an attempt to focus attention on a manageable set of applications, the main thrust of this book is to emphasize applications of Monte Carlo simulation methods in biology and medicine.

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  • Tham khảo sách 'public health – methodology, environmental and systems issues edited by jay maddock', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Some medical schools have a dedicated ambulatory internal medicine rotation, others combine this experience with the inpatient rotation, and some hybridize it with other primary care fields. Often thought of as a less essential and less exciting rotation, let it be said that the outpatient encounter is where a lot of action happens. Keeping people well, establishing long-term relationships, and having the privilege of bearing witness to improving health or even declining health are, at least to me, the essence of what it means to not just be a doctor but someone’s doctor.

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  • Develop an essential understanding of the principles of equine disease with this one-of-a-kind, problem-based resource! Extensively revised and updated with contributions from an international team of experts, Equine Internal Medicine, 3rd Edition reflects the latest clinical research in equine medicine and focuses on the basic pathophysiologic mechanisms that underlie the development of various equine diseases to help you confidently diagnose, treat, and manage patient conditions.

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  • (BQ) Part 2 book "Goldman's cecil medicine" presents the following contents: Social and ethical issues in medicine, principles of evaluation and management, preventive and environmental issues, clinical pharmacology, cardiovascular disease, gastrointestinal diseases,...

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  • The results of this project illustrate substantial technical potential for cars environmental improvement. The existing and developing legislation was also considered to assess any possible untapped technical potential. The European policy (and also the national policy) is actually being considering the environmental impacts from cars over years and already addresses some of the important environmental aspects at different stages of the car life cycle (e.g. air pollution, CO2 emissions, end-of-life waste, batteries, etc.).

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  • BphH is a divalent metal ion-dependent hydratase that catalyzes the forma-tion of 2-keto-4-hydroxypentanoate from 2-hydroxypent-2,4-dienoate (HPDA). This reaction lies on the catabolic pathway of numerous aromat-ics, including the significant environmental pollutant, polychlorinated biphenyls (PCBs). BphH from the PCB degrading bacterium,Burkholderia xenoveransLB400, was overexpressed and purified to homogeneity.

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  • Glyphosate (N-phosphonomethyl-glycine) is the most widely used herbicide in the world: glyphosate-based formulations exhibit broad-spectrum herbi-cidal activity with minimal human and environmental toxicity.

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  • Peroxisomes are cell organelles that are present in almost all eukaryotic cells and involved in a large range of metabolic pathways. The organelles are highly dynamic in nature: their number and enzyme content is highly variable and continuously adapts to prevailing environmental conditions. This review summarizes recent relevant developments in research on pro-cesses that are involved in the regulation of peroxisome abundance and maintenance.

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  • Photosystem II of higher plants is a multisubunit transmembrane complex composed of a core moiety and an extensive peripheral antenna system. The number of antenna polypeptides per core complex is modulated fol-lowing environmental conditions in order to optimize photosynthetic per-formance.

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  • Although of major impact in terms of biological and environmental haz-ards, interactions of actinide cations with biological molecules are only par-tially understood. Human serum transferrin (Tf) is one of the major iron carriers in charge of iron regulation in the cell cycle and consequently con-tamination by actinide cations is a critical issue of nuclear toxicology. Combined X-ray absorption spectroscopy (XAS) and near infrared absorp-tion spectrometry were used to characterize a new complex between Tf and Np (IV) with the synergistic nitrilotriacetic acid (NTA) anion....

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  • A potential ancestral gene Erik Salaneck1, Robert Fredriksson1, Earl T. Larson1, J. Michael Conlon2 and Dan Larhammar1 Unit of Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden; 2Regulatory Peptide Center, Creighton University School of Medicine, Omaha, Nebraska, USA We report here the isolation and functional expression of a neuropeptide Y (NPY) receptor from the river lamprey, Lampetra fluviatilis. The receptor displays

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  • Many biological C-H activation reactions exhibit nonclassical kinetic isotope effects (KIEs). These nonclassical KIEs are too large (kH/kD 7) and/or exhibit unusual temperature dependence such that the Arrhenius prefactor KIEs (AH/AD) fall outside of the semiclassical range near unity. The focus of this minireview is to discuss such KIEs within the context of the environmentally coupled hydrogen tunneling model.

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  • There is an increasing interest in the use of lanthanides in medicine. However, themechanismof their accumulation in cells isnotwell understood.Lanthanidecations are similar to ferric ions with regard to transferrin binding, suggesting transferrin-receptormediated transport is possible; however, this has not yet been confirmed. In order to clarify this mechanism, we investigated the binding of Yb 3+ to apo-transferrin by UV-Vis spectroscopy and stopped-flow spec-trophotometry, and found that Yb 3+ binds to apotransferrin at the specific iron sites in the presence of bicarbonate. ...

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  • (BQ) Part 2 book "Harrison principles of internal medicine self-Accessment and board review" presents the following contents: Disorders of the gastrointestinal system, disorders of the immune system, connective tissue, and joints; endocrine and metabolic disorders; neurologic disorders; environmental and occupational hazards.

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