منابع مشابه
Estimation of Water Retention Curve for Unsaturated Fine Soils
In order to obtain the soil water retention curve of an unsaturated soil which is defined as the relationship between water content and suction, extensive laboratory tests are essential. These laboratory tests are usually costly and time consuming. Moreover, for most practical problems, it has been found that approximate unsaturated soil properties are adequate for analysis. Thus, empirical pro...
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[1] For characterizing water flow in the vadose zone, the water retention curve (WRC) of the soil must be known. Because conventional WRC measurements demand much time and effort in the laboratory, alternative methods with shortened measurement duration are desired. The WRC can be estimated, for instance, from the cumulative pore size distribution (PSD) of the investigated material. Geophysical...
متن کاملDifferential Evolution’s Application to Estimation of Soil Water Retention Parameters
A Differential Evolution (DE) is introduced to predict the parameters of the soil water retention curve (SWRC) and it is configured for reliability and efficiency with the Unsaturated Soil Hydraulic Property Database (UNSODA). The main investigated dataset is 235 samples from lab_drying_h-t table and the testing shows that the data resource is reliable and steady. Some specific statistical comp...
متن کاملHistologic Estimation of Intrauterine Retention Time after Fetal Death
The fetus undergoes postmortem changes after death in utero due to autolysis. Several reports have suggested that the autolysis may provide a method for determining the intrauterine retention time (IURT).Among them, the Genest’s study has presented the loss of nuclear basophilia as a most reliable histologic indicator. According to the Genest’s criteria, 10 histologic features based on loss of ...
متن کاملNovel consensus quantitative structure-retention relationship method in prediction of pesticides retention time in nano-LC
In this study, quantitative structure-retention relationship (QSRR) methodology employed for modeling of the retention times of 16 banned pesticides in nano-liquid chromatography (nano-LC) column. Genetic algorithm-multiple linear regression (GA-MLR) method employed for developing global and consensus QSRR models. The best global GA-MLR model was established by adjusting GA parameters. Three de...
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ژورنال
عنوان ژورنال: PROCEEDINGS OF HYDRAULIC ENGINEERING
سال: 1994
ISSN: 0916-7374,1884-9172
DOI: 10.2208/prohe.38.331