نتایج جستجو برای: external materials
تعداد نتایج: 616128 فیلتر نتایج به سال:
Two-dimensional (2D) materials with atomic thickness and extraordinary physicochemical properties exhibit unique mass transport behaviors, enabling them as emerging nanobuilding blocks for separation membranes. Engineering 2D materials into membrane with subnanometer apertures for precise molecular sieving remains a great challenge. Here, we report rational-designing external forces to precisel...
Introduction & Objective: Epiphora is one of the most common problems in the primary adult nasolacrimal duct obstruction (PANDO) . The surgical treatment of epiphora is dacryocystorhinostomy(DCR) which is performed in two methods : External and Endonasal. Materials & Methods : In this prospective randomized clinical trial study, results and complications of these two methods were compared in...
The ZLC technique, first introduced for diffusion measurements in zeolites, has been continuously developed proving its validity in the investigation of the kinetic and equilibrium properties in solid adsorbents. The very small size of the column offers several key advantages compared to other experimental methods: foremost, the small required sample quantity (1–2 mg for kinetic measurements to...
In search of novel, improved materials for magnetic data storage and spintronic devices, compounds that allow a tailoring of magnetic domain shapes and sizes are essential. Good candidates are materials with intrinsic anisotropies or competing interactions, as they are prone to host various domain phases that can be easily and precisely selected by external tuning parameters such as temperature...
introduction : lateral osteotomy is a major part of rhinoplasty for remodeling external facet of the nose and narrowing of nasal base and dorsum after removal of the hump with the edema and ecchymosis being the major sequels of the operation. the present study compared post-operative edema and ecchymosis and mucosa tears between internal and external osteotomy techniques. materials and methods ...
Background and purpose: Ïdentifying the students’ attributional style and helping them to be responsible and have a proper view is of critical importance which can lead them to achieve greater success and creativity. Çonsidering its significant role in being an active or a passive, and demotivated person, the present study was conducted in order to determine the attributional style of the stu...
Introduction In order to discharge the patients receiving treatment with large radiation doses of 131I for thyroid cancer, it is necessary to measure and evaluate the external dose rates of these patients. The aim of the study was to assess a new method of external dose rate measurement, and to analyze the obtained results as a function of time. Materials and Methods In this study, a telescopic...
Background and Aim: Knowledge about the external causes of accidents is vital for their prevention, and insufficient data on external causes can reduce their usefulness. That is why, the adequacy of the sources of data is of great importance. The aim of this research is to study the adequacy of data regarding the injuries' external causes for coding based on ICD-10 in inpatient medical records ...
Background and purpose: The cost of health care has an increasing trend worldwide. Therefore, governments aim at analyzing the economic aspects of health services and make interventions in improving the financial performance of health care systems. This study was conducted to assess the new financial system of medical universities in Iran using SWOT analysis. Materials and methods: This cros...
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