نتایج جستجو برای: aluminum 1100
تعداد نتایج: 57347 فیلتر نتایج به سال:
The Aluminum Hypothesis, the idea that aluminum exposure is involved in the etiology of Alzheimer disease, dates back to a 1965 demonstration that aluminum causes neurofibrillary tangles in the brains of rabbits. Initially the focus of intensive research, the Aluminum Hypothesis has gradually been abandoned by most researchers. Yet, despite this current indifference, the Aluminum Hypothesis con...
Introduction: The aluminum foils wrapped around the sample tray assembly (STA) of the Stardust spacecraft will contain a record of both cometary and interstellar dust hypervelocity collisions in the form of craters [1-2]. While the primary goal of the cratering preliminary examination (PE) is to define the cometary particle flux [2], previous studies of exposed metallic foils in space have show...
Aluminum has been implicated in several neurodegenerative conditions including Alzheimer's disease. Because the mammalian olfactory system has an unusual capacity for the uptake and transneuronal spread of inhaled substances such as aluminum, whole cell recording techniques were used to examine the actions of aluminum on basic membrane properties and amino acid receptors on rat olfactory bulb m...
یکی از روش های مرسوم جهت نمونه سازی سریع، استفاده از روش شکل دهی تدریجی می باشد. از این میان، فرایند شکل دهی تدریجی ضربه ای، در چند سال اخیر توسعه یافته است. در این روش، با حرکت فرکانسی یک پانچ ضربه زننده روی یک ورق کلمپ شده، یک قطعه سه بعدی بدون استفاده از قالب خاص تولید شده است. در این مقاله، تاثیر پارامترهای ابزار بر شکل پذیری ورق آلومینیم 1100 در فرایند شکل دهی تدریجی ضربه ای مورد مطالعه قر...
Author details Trauma Unit, Department of Surgery, Academic Medical Center, University of Amsterdam, P.O. Box 22660, 1100 DD, Amsterdam, The Netherlands. Department of Clinical Epidemiology, University Medical Center, Utrecht, Huispost Str. 6.131, P.O. BOX 85500, 3508 GA, Utrecht, The Netherlands. Department of Emergency Medicine, Academic Medical Center, University of Amsterdam, P.O. Box 22660...
In this study, the bonding of porous aluminum (porous Al) and thermoplastic acrylic resin by friction welding was attempted. We investigated relationship between conditions (rotational speed processing time during welding) strength welding. This method enables us to obtain Al composite materials with anchor effects relatively easily in a short time. Therefore, it is expected be applied fabricat...
The present paper analyzes the effect of low aluminum additions and hot forging process on microstructure non-metallic inclusions high manganese steels. Four high-manganese steels (HMnS) were obtained by adding contents 1.1 1.5 wt. % in four medium carbon austenitic (0.3 - 0.4 wt% C) with 17 22 Samples as-cast forged to 1100 ?C obtain a whole reduction 70 %. microstructural evolution was studie...
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