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151.
Bogatov V. V. Prozorova L. A. Chernova E. N. Lysenko E. V. Ngo Q. Tran T. Hoang S. 《Doklady Earth Sciences》2019,484(1):76-78
Doklady Earth Sciences - The concentrations of seven heavy metals (HMs) in tissues of bivalve mollusks of the families Unionidae (genera Ensidens, Scabies, Kunashiria) and Cyrenidae (genus... 相似文献
152.
Sotirin B.J. Tran J.-M.Q.D. Hodgkiss W.S. Jr. 《Oceanic Engineering, IEEE Journal of》1990,15(4):316-323
Matched-field ambiguity surfaces produced by deep-water ambient-noise data are discussed and quantified in terms of power levels and correlation values. Two processors were implemented (Bartlett and minimum variance) using data at 35 and 95 Hz with similar but distinct vertical angular distributions. In general, the ambiguity surfaces have both diffuse and discrete components. The diffuse distribution extends across the sound channel with correlation values increasing with distance. The discrete sources have higher correlation values and are distributed in a convergence-zone sidelobe structure. Local wind conditions appear to affect the received power but not the correlation values or the processor output power 相似文献
153.
Nam H. Tran 《Computational Geosciences》2007,11(3):249-260
Simulated annealing (SA) has the capacity to handle complex problem of fracture heterogeneity. However, its applications to
characterization and modeling of an actual discrete fracture network are limited. Borrowing the context of geothermal reservoirs
(where extensive discrete fractures exist), this paper attempts to solve several key practical issues that persist in current
models: objective function’s (OF’s) formulation, modification scheme, and stop criteria. The improvements are examined in
a case study on an actual fracture outcrop, where results are compared with a current and advanced SA work. 相似文献
154.
Acharee Kaewlaoyoong Chi Thanh Vu Chitsan Lin Chien Sen Liao Jenq-Renn Chen 《Environmental Earth Sciences》2018,77(12):457
The increasing usage and disposal of plastic products could cause the wide distribution of phthalate esters (PAEs) in various environmental media. In this study, six PAE compounds, namely dimethyl phthalate, diethyl phthalate, di-n-butyl phthalate, benzyl butyl phthalate, di(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate, were analyzed in various samples collected from the major plastic industrial area of southern Taiwan, including soil, fertilizer and plastic products, for the purposes of identifying of the possible sources of PAEs and assessing the related health risk. The results show that PAEs in soil samples was dominated by DEHP, with the total concentrations in the range of 0.7?±?0.5, 0.2?±?0.1, and 0.3?±?0.2 mg kg?1 for soil samples from farmland, household back gardens and the roadside, respectively. Contents of PAEs in chemical fertilizer (ND—0 0.87 mg kg?1) were higher than that in organic fertilizer (ND—0.08 mg kg?1), and PAEs concentrations (ND—316 mg kg?1) in plastic mulching films were much less than those in the other types of plastic products (ND—1719 mg kg?1), implying that major sources of PAEs in agricultural soil could be the use of chemical fertilizer and plastic products other than plastic mulching films. Health risk assessment suggested that, via the exposure to PAEs in soil, the potential non-cancer and carcinogenic risks for adults and children are minimal in most cases, except that a “moderate” carcinogenic risk for children exposure to DEHP. The results of this study can serve as a reference for further pollution prevention and environmental protection plans in relation to the industrial operation and discharge as well as the farming practices. 相似文献
155.
156.
Trong C. D. Hoang N. Bach M. X. Luc N. M. Dung L. V. Trieu C. D. Syrbu N. S. Hai D. Th. Tuan Th. A. Toan N. Q. Thanh D. V. 《Geotectonics》2022,56(3):321-338
Geotectonics - This paper presents analysis of geomorphological indices for predicting the maximum observed earthquake (MOb?Max) in research region, conducted in three steps: (i)... 相似文献
157.
Natural Hazards - The mechanical processes involved in movements of earth or rock masses under the effect of gravity—a landslide—may include several phases where the failure of one... 相似文献
158.
Tran T. T. Pham N. H. Pham Q. B. Pham T. L. Ngo X. Q. Nguyen D. L. Nguyen P. N. Veettil B. K. 《Water Resources》2022,49(3):391-401
Water Resources - Accurate forecasting of salinity intrusion has a vital role in water resource management to mitigate and prevent its adverse effects. However, monitoring of salinity presents... 相似文献
159.
160.