نتایج جستجو برای: generally changes due to anthropogenic causes eg nutrients
تعداد نتایج: 10819194 فیلتر نتایج به سال:
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
Water is the most vital resource for the living beings to survive. India has a vast and varied inland water resource which is considered to be richest in world’s nature lakes. The physicochemical characteristic of Nellore tank has been studied for monsoon, pre-monsoon, postmonsoon in the year. From the results water body was found to be well in the permissible limit of BIS (1998, except pH, DO,...
Satellite observations can be used to detect the changes of CO2 concentration at global and regional scales. With the column-averaged CO2 dry-air mole fraction (Xco2) data derived from satellite observations, the issue is how to extract and assess these changes, which are related to anthropogenic emissions and biosphere absorptions. We propose a k-means cluster analysis to extract the temporall...
OBJECTIVE To evaluate the changes in the understanding of the manner and cause of death occurring during the course of coronial investigations. DESIGN Retrospective analysis of deaths reported to coroners in Australia between 1 July 2000 and 31 December 2007, using the National Coroners Information System. MAIN OUTCOME MEASURES (i) Manner of death (natural, external, unknown); (ii) intent c...
A little more than 10,000 years ago, the so-called ice age, with average temperature of Earth about 10°lower today. After there was an increase in and melting glaciers, last 1,000 trend has been slightly negative. The exception is 100 years, when a sudden air due to increased emission greenhouse gases anthropogenic origin. hundred 1°. Of co urse, these changes have impact on dynamics ocean, par...
abstract translation has become a cultural act which plays a significant role in human life. with the emergence of functional translation theories, and skopos theory in particular, translation has been considered as a purposeful, interpersonal and intercultural activity which is produced for particular recipients and directed by a specific purpose. this purpose determines the translatio...
due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...
Many of the threats to the persistence of populations of sensitive species have physiological or pathological mechanisms, and those mechanisms are best understood through the inherently integrative discipline of physiological ecology. The desert tortoise was listed under the Endangered Species Act largely due to a newly recognized upper respiratory disease thought to cause mortality in individu...
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