نتایج جستجو برای: in situ scaling
تعداد نتایج: 16988708 فیلتر نتایج به سال:
the simultaneous flow of oil and water in porous media is described by relative permeability curves, mainly derived from laboratory experiments. relative permeability is of paramount importance in predicting reservoir production performance and drive mechanisms and its value depends largely on the volume fraction of fluids present in the test samples. nowadays x-ray scanners are one of the most...
purpose: to evaluate the visual outcomes of cross-cylinder ablation in laser in situ keratomileusis (lasik) for eyes with high astigmatic refractive errors and low spherical component. methods: we prospectively evaluated cross cylinder lasik in patients with high astigmatic refractive error but low spherical component over a period of 2 years. all procedures were performed with the nidek ec-500...
preparation and characterization of thermoresponsive in-situ forming poloxamer hydrogel for controlled release of nile red-loaded solid lipid nanoparticles. nanoparticles (nps) are cleared rapidly from systemic circulation and do not provide sustained action in most cases. to solve this problem, this investigation introduces an erodible in-situ forming gel system as potential vehicles for prolo...
The inter-comparison of different soil moisture (SM) products over the Tibetan Plateau (TP) reveals the inconsistency among different SM products, when compared to in situ measurement. It highlights the need to constrain the model simulated SM with the in situ measured data climatology. In this study, the in situ soil moisture networks, combined with the classification of climate zones over the...
در این تحقیق، نانوکامپوزیت بر پایه نانوخاک رس دولایه mmt/pu سنتز گردید. نانوخاک رس با عاملیتهای کاتیونی و آنیونی و با ایجاد فرآیند تبادل یون خواص بسیار مطلوبی به پلی یورتان داده و با پلی یورتان سازگاری خوبی دارد. پیوند ایجاد شده بین نانوخاک رس و پلیمر از نوع کووالانسی و نوع واکنش انجام شده پلیمریزاسیون همزمان (in situ polymerization) است. پلی اُل مورد استفاده در تهیه نانوکامپوزیت دارای دو سر انت...
این مطالعه به منظور تعیین ترکیبات شیمیایی، خصوصیات فیزیکی، قابلیت هضم، تجزیه پذیری و ارزش غذایی سرشاخه گل محمدی در مقایسه با علوفه یونجه با استفاده از دو روشin situ وin vitro انجام شد. داده های جمع آوری شده در قالب آزمون آماریt-test تجزیه آماری شدند. تفاوت معنی داری بین علوفه یونجه و سرشاخه گل محمدی از نظر ماده آلی، پروتئین خام، الیاف نامحلول در شوینده ی خنثی و عصاره اتری مشاهده شد (0/05>p). می...
Corrosion and scaling in drinking water sources can lead to economic and health damages. These processes produce by-products in distribution systems, reduce chemical water quality, and are the cause of health issues among consumers. The aim of this study was to evaluate the corrosion and scaling potential of water supply sources of Marivan villages, Iran. In total, 106 water samples were collec...
In situ transport measurements on disordered polycrystalline Fe films reveal a logarithmic temperature dependence of the longitudinal Rxx and anomalous Hall Rxx resistances at low temperatures and a heretoforeunobserved scaling behavior in which the relative changes in Rxx and Rxy are found to be equal. Accordingly, the anomalous Hall conductivity is non-zero with a logarithmic temperature depe...
The first organocatalytic synthesis of cis-decalins using sulfonyl Nazarov reagents is reported. The Jørgensen's catalyst directs this highly enantioselective synthesis using different cyclohexenal derivatives.
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