نتایج جستجو برای: astm a516
تعداد نتایج: 3399 فیلتر نتایج به سال:
OBJECTIVES Health Avatar Beans was for the management of chronic kidney disease and end-stage renal disease (ESRD). This article is about the DialysisNet system in Health Avatar Beans for the seamless management of ESRD based on the personal health record. METHODS For hemodialysis data modeling, we identified common data elements for hemodialysis information (CDEHI). We used ASTM continuity o...
This research was conducted to evaluate abrasion resistance of high-volume fly ash concrete. A reference plain portland cement concrete was proportioned to obtain 28day strength of 41 MPa. Concrete mixtures were also proportioned to have two levels of cement replacements (50 and 70%) with an ASTM Class C fly ash. Abrasion tests were carried out using the rotating cutter method as per ASTM C-944...
فرآیندنمونه سازی در طیف نگاری آلفا، برای اندازه گیری غلظت های جرمی و اکتیویته ایزوتوپ های اورانیوم ، با توجه به برد کوتاه ذرات آلفا، ترکیبات خاص اورانیوم در خاک و محدوده نزدیک انرژی ذرات آلفای گسیل شده از ایزوتوپ های آن ، بسیار حساس می باشد. در این تحقیق، با مبنا قراردادن روش استاندارد astmاثر برخی پارامتر ها از جمله کیفیت انحلال اسیدی ، ph روند الکترونشانی در نمونه سازی و سامانه طیف نگاری بررس...
There is worldwide interest in deriving increasing amounts of energy from bio-based agricultural materials including not only lignocellulosic residues but also a significant quantity of available livestock manure. This manure can be used as a feedstock for various thermochemical conversion processes such as pyrolysis and gasification. In order to apply these processes, the manure must be proper...
Recent advances in abrasive waterjet (AWJ) technology have resulted in new processes for surface treatment that are capable of introducing compressive residual stresses with simultaneous changes in the surface texture. While the surface residual stress resulting from AWJ peening has been examined, the subsurface residual stress field resulting from this process has not been evaluated. In the pr...
Balloting on a new test method for use in the ranking of porous packaging materials used in sterile packaging applications by their ability to provide bacterial holdout was completed in July 2007 by ASTM International Committee F02 Flexible Barrier Packaging. As a result of this balloting, there is a new test method available for evaluating the barrier capabilities of porous materials intended ...
The main objective of present work is to describe the feasibility friction stir welding (FSW) forjoining low carbon steel with dimensions (3 mm X 80 150 mm). A matrix (3×3) weldingparameters (welding speed and tool rotational speed) was used see influence each parameter onproperties welded joint .Series experiments were conducted using CNC milling machineutilizing wide range transverse machine....
The fracture toughness is a critical material property that determines engineering performance. However, as is well known for crystalline materials, if certain sample geometry and size requirements are not met, test results become sample-size dependent and difficult to compare between different studies. Here, the room-temperature fracture toughness of the Zr-based bulk metallic glass (BMG) Zr52...
Stainless steel has been frequently used for temporary implants but its use as permanent implants is restricted due to its low pitting corrosion resistance. Nitrogen additions to these steels improve both mechanical properties and corrosion resistance, particularly the pitting and crevice corrosion resistance. Many reports concerning allergic reactions caused by nickel led to the development of...
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