نتایج جستجو برای: permanent environmental
تعداد نتایج: 430148 فیلتر نتایج به سال:
Background: Hearing loss is defined as worsening of hearing acuity and is usually expressed as an increase in the hearing threshold. Tinnitus, defined as "ringing in the ear", is a common and often disturbing accompaniment of hearing loss. Hearing loss and environmental exposures to noise are increasingly recognized health problems. Objectives: The objective was to assess whether the exposure-r...
The changes in species composition between habitat patches (beta diversity) are likely related to a number of factors, including environmental heterogeneity, connectivity, disturbance and productivity. Here, we used data from aquatic environments in five Brazilian regions over two years and two seasons (rainy and dry seasons or high and low water level periods in floodplain lakes) in each year ...
General patterns of forest dynamics and productivity in the Andes Mountains are poorly characterized. Here we present the first large-scale study of Andean forest dynamics using a set of 63 permanent forest plots assembled over the past two decades. In the North-Central Andes tree turnover (mortality and recruitment) and tree growth declined with increasing elevation and decreasing temperature....
Mixed model techniques were used to evaluate the importance of cytoplasmic genetic effects on beef cattle performance. Birth weight (BWT), preweaning average daily gain (ADG), weaning weight (WT205), postweaning gain (PG), ultrasonic backfat thickness (FAT) and predicted milk yield (MILK) data were collected in two herds of Hereford cattle located at Plymouth and Raleigh, North Carolina. Cytopl...
Stressful life and reduced well-being have always been an issue of lifestyle in modern society. Constructing a multidisciplinary conceptual framework of environmental tranquility and quality of life is required for the field of architectural development, improved environmental quality, and enhanced human well-being. This paper reviews the main concepts of tranquility, environmental quality, and...
Artisanal small scale gold mining (ASGM) operations are largely unregulated, informal and transient. Rudimentary mining and processing techniques used in ASGM often result in degraded environmental, safety, health and social conditions. ASGM requires permanent sources of water, placing most operations close to natural water bodies. Until recently, the impact on these environments has been large...
Objectives: Cerebral palsy is the most common type of permanent movement and posture disorder in children leading to activity limitations. Childrenchr('39')s participation is influenced by their functional ability, skills, interests, and environmental factors. The objective of the study was to describe parent perception of environmental barriers to participation of children with cerebral palsy....
Community–academic partnerships have demonstrated potential for studying and improving community and environmental health, but only recently have their policy impacts been systematically studied. This case study highlights the evolution, research, and policy processes and outcomes of a community based participatory research (CBPR) partnership that has had multilevel impacts on health policy con...
BACKGROUND How to promote physical activity is an important public health problem that is attracting increasing attention. Although the application of environmental approaches is believed to promote resident walking, there remains insufficient evidence of the effectiveness of these interventions. METHODS This study employed direct observation and questionnaires. Observations were performed on...
using monthly test day records the genetic parameters of iranian holstein cattle in first lactation were studied. data of 277400 test-day milk records from 65320 cows and 2210 sires were analyzed by an animal random regression model using restricted maximum likelihood methodology. the model included herd-test-date, interaction between year-season of calving, days in milk (linear and quadratic) ...
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