نتایج جستجو برای: مدل l thia
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Many hydrologic and water quality computer models have been developed and applied to assess hydrologic and water quality impacts of land use changes. These models are typically calibrated and validated prior to their application. The Long-Term Hydrologic Impact Assessment (L-THIA) model was applied to the Little Eagle Creek (LEC) watershed and compared with the filtered direct runoff using BFLO...
در میان عناصر بی شمار سازنده طبیعت، آب نقش بسیار مهمی را، به سبب اختصاصات فیزیکی و شیمیایی خود ایفا می کند. با گسترش روزافزون جمعیت، از یک طرف نیاز به آب شیرین روز به روز افزایش و از طرفی ورود آلاینده ها به این اکوسیستم ، سرعت یافته است. مهمترین آلاینده هایی که باعث ایجاد آلودگی آب می شوند، نیتروژن و فسفر موجود در رواناب کشاورزی هستند که به آلودگی غیرنقطه ای (nps)، موسوم هستند. برای رفع این مشک...
A conformational analysis of nine macrocyclic thioether musks has been carried out using molecular mechanics (MMFF), density functional theory (DFT) using both B3LYP and M06 functionals, as well as Hartree-Fock and post-Hartree-Fock (MP2) ab initio methods. 6-Thia-, 10-thia- and 4-methyl-5-thia-14-tetradecananolide, 4-thia-, 7-thia-, 11-thia- and 12-thia-15-pentadecanolide and 6-thia- and 12-th...
The bidentate 1,3,4-thia-diazole ligand, namely, 2,5-bis-(2-pyrid-yl)-1,3,4-thia-diazole (denoted L), untested as a polydentate ligand, has been found to form the monomeric title complex, [Ni(C(12)H(8)N(4)S)(2)(H(2)O)(2)](BF(4))(2). The complex shows an octa-hedral environment of the nickel cation in which the Ni(2+) ion is located on a center of symmetry, linked to two ligands and two water mo...
In the title compound, C(11)H(7)F(3)N(2)O(4)S(2), the 1,3-thia-zol-2-amine residue is almost perpendicular to the central benzene ring [dihedral angle = 84.3 (2)°]. There is a small twist between the benzene ring and the ester group [C-O-C-C torsion angle = 9.8 (6)°]. Thus, the mol-ecule has an L-shape. Inversion-related dimers are connected in the crystal packing by pairs of N-H⋯N hydrogen bon...
The house fly, Musca domestica L., is an important ectoparasite with the ability to develop resistance to insecticides used for their control. Thiamethoxam, a neonicotinoid, is a relatively new insecticide and effectively used against house flies with a few reports of resistance around the globe. To understand the status of resistance to thiamethoxam, eight adult house fly strains were evaluate...
The most important pollutants that cause water pollution are nitrogen and phosphorus from agricultural runoff called Non-Point Source Pollution (NPS). To solve this problem, management practices known as BMPs or Best Management Practices are applied. One of the common methods for Non-Point Source Pollution prediction is modeling. By modeling, efficiency of many practices can be tested before ap...
The syntheses and crystal structures of two isomers of phenyl iso-thia-zolyl oxa-thia-zolone, C11H6N2O2S2, are described [systematic names: 5-(3-phenyl-iso-thia-zol-5-yl)-1,3,4-oxa-thia-zol-2-one, (I), and 5-(3-phenyl-iso-thia-zol-4-yl)-1,3,4-oxa-thia-zol-2-one, (II)]. There are two almost planar (r.m.s. deviations = 0.032 and 0.063 Å) mol-ecules of isomer (I) in the asymmetric unit, which form...
One-step synthesis of polycyclic thianthrenes from unfunctionalized aromatics by thia-APEX reactions
In this paper, thia-APEX reactions affording π-extended thianthrene derivatives from unfunctionalized aromatics are described.
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