Teknik pengelasan semakin banyak dipergunakan secara luas dalam proses penyambungan plat-plat besi, kontruksi bangunan dan konstruksi mesin. Salah satu metode yang sering dipakai, yaitu gas metal arc welding (GMAW). Tujuan penelitian ini adalah untuk mengetahui parameter terbaik pada Pengelasan GMAW terhadap struktur mikro, makro kekerasan Material ASTM A537 A653 DDS (galvanis). Metode digunaka...

ABSTRACT: – The increasing awareness of environment, government has promoted great interest in selected waste collection and has attracted the interest of research groups to challenge of converting recycled plastic into useful products. Converting PET containing film laminate waste is studied to obtain a new material with enhanced properties. In present study different percentage of film lamina...

Two tribological pairs used for artificial joints were studied. Wear tests were performed in a pin-on-disc type machine modified to allow lubrication ith bovine serum. The pins were made of either AISI F138 stainless steel or ASTM F136 titanium alloy, while the discs were manufactured with ltra-high molecular weight polyethylene (UHMWPE). The tested pairs were ASTM F138 stainless steel–UHMWPE a...

With the increasing focus on developing environmentally benign electronic packages, Pb-free alloys have received a great deal of attention. Mishandling of packages during manufacture, assembly or by the user may cause failure of the solder joint. A fundamental understanding of the behavior of Pb-free solders under mechanical shock conditions is lacking. Reliable experimental stress–strain data ...

The influence of deicing chemicals on alkali reactivity of aggregates is still an area of active research. The potential alkali reactivity of aggregates is often tested using the ASTM C1260 method. This research used the modified ASTM C1260 to test the potential alkali reactivity of aggregates. The modification included replacing the standard 1N sodium hydroxide (NaOH) used in ASTM C1260 with e...

بخش اورژانس یکی از شلوغ‌ترین بخش‌های یک بیمارستان است و بهبود عملکرد این تأثیر بسیاری در کیفیت ارائه خدمات دارد. اخیراً پژوهشگران به­‌دلیل تمرکز مهندسی تاب‌آوری مدیریت ناب بر کارایی سیستم‌ها توجه بسیار زیادی به دو دیدگاه کنار یکدیگر داشته‌اند. هدف پژوهش، رویکردی یکپارچه برای ارزیابی مبتنی شاخص‌های با ارتقای رضایت شغلی کاهش هزینه‌های درمانی واحد خصوصی است. منظور، ابتدا شناسایی مؤثر، مدل مفهومی مس...

This paper summarizes current trends in instrumental color styling, color matching and production shading of paint and factors essential to success, with particular emphasis on automotive finishes and research within ASTM and Detroit Color Council committees.

We compared the electrophysiological correlates for the maintenance of non-musical tones sequences in auditory short-term memory (ASTM) to those for the short-term maintenance of sequences of coloured disks held in visual short-term memory (VSTM). The visual stimuli yielded a sustained posterior contralateral negativity (SPCN), suggesting that the maintenance of sequences of coloured stimuli en...

Health care provides many opportunities in which the sharing of data between independent sites is highly desirable. Several standards are required to produce the functional and semantic interoperability necessary to support the exchange of such data: a common reference information model, a common set of data elements, a common terminology, common data structures, and a common transport standard...