نتایج جستجو برای: drainage coefficient modification
تعداد نتایج: 334978 فیلتر نتایج به سال:
Watershed management is a “process of formulation and carrying out of a course of action involving modification of the natural system of watersheds to achieve specified objectives” (Biswas, 2002). Much of watershed management has largely to do with risk assessment and minimizing adverse effects on human populations. To accomplish their specified objectives, professionals in the field of watersh...
IN the course of experiments on the treatment of radiation injury it became necessary to obtain lymphocytes from the thoracic duct of mice. A method for collectiiig lymph from the thoracic duct of unanaesthetized mice has been described by Shrewsbury (1959). In the present paper a modification of his method is described which, it is felt, has certain advantages. With this method the daily outpu...
The biotic and abiotic: processes involved in the environmental degradation of freshwater ecosystems are often complex, and their combined effects are not easily measured. Many human activities across the landscape contribute to degradation, including discharge of domestic, agricultural, and industrial effluents; cultural eutrophication; acidification; erosion and sedimentation following human ...
In this study, comparisons of the backscattering coefficients and the coherence values which had been extracted from SAR (Synthetic Aperture Radar) images such as JERS-1, ENVISAT and ALOS satellites with surface roughness, surface geometric and soil moisture content were carried out. As the results of analysis using the backscattering coefficient and coherence values from SAR images, the cohere...
Many hydrological studies of forested ecosystems focus on the study of the forest canopy and have partitioned gross precipitation into throughfall and stemflow. However, the presence of forest litter can alter the quantities of water available for soil infiltration and runoff. Little information exists regarding the value of storage and drainage parameters for litter layers. Vegetation paramete...
BACKGROUND/AIMS Race and ethnicity are important determinants when estimatingglomerular filtration rate (GFR). The Korean coefficients for the isotope dilution mass spectrometry (IDMS) Modification of Diet in Renal Disease (MDRD) Study equations were developed in 2010. However, the coefficients have not been validated. The aim of this study was to validate the performance of the Korean coeffici...
displacement coefficient method (dcm) stipulated in the asce 41-06 standard is becoming the preferred method for seismic rehabilitation of buildings in many high-seismic-hazard countries. applications of the method for non-building constructions such as bridges are beyond the scope of this standard. thus its application to this kind of structure should be approached with care. target displaceme...
The quality and quantity of agricultural products depend on land reclamation. Collector-drainage systems are used to improve the reclamation state irrigated areas. article discusses stability slopes open collector-drainage networks in lands Hungry Steppe. Discussed problems create during construction providing productivity drainages system irrigation fields. causes deformation process discussed...
The growth of world population and the demand for agricultural products can be regarded as one of the important issues that humanity has ever faced. There are serious concerns regarding surface and ground water pollution by nitrates because of using nitrogen fertilizers in the agriculture. Improving agricultural water management systems can reduce nitrate in drainage outflow and therefore, redu...
JPEG is a common image format in the WWW and can potentially be used to hide data for secure internet communication and watermark for copyright control. In this paper, we propose an algorithm to embed the secret or watermark information. The proposed algorithm, named Watermarking by DC Coefficients Modification (WDCM), assumes that the quality factor used in JPEG compression is known. We observ...
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