نتایج جستجو برای: infiltration rate
تعداد نتایج: 1008476 فیلتر نتایج به سال:
To determine the water application efficiency in furrow irrigation more accurately, consideration of seasonal and spatial variation of infiltration properties are needed. In addition, the effectiveness of different farm management on infiltration are significant. The main objective of this research was to simulate the seasonal variation (SV) of infiltration coefficients in Kostiakov-Louise equa...
objectives:the aim of the present study was to assess the analgesic efficacy of iv ketamine injection inaddition to nephrostomy tract infiltration of ketamine – bupivacaine on postoperative pain relief after tubeless percutaneous nephrolithotomy (pcnl). patients and methods: patients (n = 100), with renal stone who were candidates for pcnl were randomized to five groups with 20 cases in each: g...
We quantify relations between rates of in situ denitrification and saturated infiltration through shallow, sandy soils during managed groundwater recharge. We used thermal methods to determine time series of point-specific flow rates, and chemical and isotopic methods to assess denitrification progress. Zero order denitrification rates between 3 and 300 μmol L(-1) d(-1) were measured during inf...
In 43 patients with Graves' disease, 5 patients with painless thyroiditis and 30 patients with Hashimoto-thyroiditis ultrasonographical observations and histological examinations by needle biopsy of the thyroid were carried out simultaneously. In all cases the level of echo-amplitude was well correlated with the rate of lymphocytic infiltrations and fibrosis. In cases which exhibited marked lym...
*R. D. Lentz and D.L. Bjorneberg, USDA-ARS, Northwest Irrigation and Soils Research Lab., 3793 N. 3600 E., Kimberly, ID 83341 USA. *Corresponding author: [email protected] ABSTRACT For surface irrigation, the rate and spatial characteristics of infiltration processes influence crop productivity, water use efficiency, and erosion potential of stream flows. A change in infiltration rate a...
To determine the water application efficiency in furrow irrigation more accurately, consideration of seasonal and spatial variation of infiltration properties are needed. In addition, the effectiveness of different farm management on infiltration are significant. The main objective of this research was to simulate the seasonal variation (SV) of infiltration coefficients in Kostiakov-Louise equa...
Commercially available equipment for automatic gas-sampling is both expensive and bulky. Air infiltration into refrigerated areas should ideally be measured with low-cost, portable, automatic gas-samplers, capable ofoperating in a wide range of ambient temperatures. This paper describes such a sampler. Although the need for portability limits the size ofthe equipment and therefore the volume of...
with estimates increasing as much as a factor of 20 when the scale of measurement increased from 0.1 to 2 m (e.g., Estimates of saturated and unsaturated water flow in soil are imporGarbesi et al., 1996; Tidwell and Wilson, 1999). tant for predictions of infiltration, runoff, and solute transport. PreviMeasurement bias related to sample size has someous research indicates that ponded infiltrati...
Background Currently, it remains unclear regarding the association between tumor-infiltrating lymphocytes (TILs) and efficacy of postoperative radiotherapy in primary tumors. Here we attempted to investigate effect TILs depending on presence postmastectomy (PMRT) prognosis pT1-2N1M0 breast cancer. Methods The clinical data cancer patients undergoing mastectomy axillary lymph node dissection wer...
Though it is vital to estimate infiltration as one of the key factors in effective management of water resources, only few studies have been carried out either to determine the infiltration or to compare the performance of infiltration models for coarse textured soils. Thus, the present study was conducted to accomplish two objectives. First to estimate the Horton’s infiltration model parameter...
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