The observation of a strong and extended positron-electron annihilation emission in the central region of the Galaxy by INTEGRAL-SPI, consistent with the bulge geometry, without any counterpart in the gamma-ray range, neither at high energy nor in the 1809 keV 26 Al decay line, is challenging. Leaving aside the geometrical question, we address the problem of the adequate positron sources, showi...

Introduction: The most important environmental problem of automotive industries is the produced wastewater due to its various processes. The flocculation and coagulation along with chemical sequestration are among important processes for removing contaminants from wastewaters. The aim of this study is to investigate the efficiency of coagulation and flocculation process along with chemical sequ...

Azerbaijan is the main oil and gas exporting country in Eastern Europe one of energy suppliers Europe. Azerbaijan, whose economy based on industry, has recently seen a certain revival non-oil sector. also producers aluminum Europe, there are partnerships with development this industry as well The sector essential for country's economy. This heavily dominated by industry. As part research, an ec...

Aluminum production is a major energy consumer and important source of greenhouse gas (GHG) emissions globally. Estimation the consumption GHG caused by aluminum in China has attracted widespread attention because produces more than half global aluminum. This paper conducted life cycle (LC) analysis primary recycled for year 2020, considering provincial differences on both scale self-generated ...

Aluminum is currently the most widely used non-ferrous metal, and its extraction and purification from geological stores exceeds that of any other metal except iron (1, 2). In 2013, global primary aluminum production was ~52 million tons (104 billion pounds) or about 15 pounds for very person on the earth (1–4). The global outlook for aluminum demand from developing countries such as Brazil, Ch...

In recent years an emphasis has been placed on reducing food borne pathogens on the farm. Of particular interest to the poultry industry is Salmonella enterica. In the United States, a common practice in broiler management is the reuse of litter for consecutive flocks; this practice can lead to a Salmonella positive flock causing the colonization of sequential flocks. Reuse of litter can also l...

Aluminum sulfate (alum), ferrous sulfate, ferric chloride and ferric chloro-sulfate were commonly used as coagulants. However, a possible link of Alzheimer’s disease with conventional aluminium based coagulants has become an issue in wastewater treatment. Hence, special attention has shift towards using biodegradable polymer, chitosan in treatment, which are more environmental friendly. Moreove...

Ultrasonic complex vibration welding of same and different metal specimens and structures of the welded area are studied using several complex vibration welding systems, scanning and transmission electron microscopes (SEM and TEM). Ultrasonic welding can weld various metal directly using vibration and static clamping pressure. The welding area is limited very narrow layer and can weld different...

Aluminum alloys are used in many applications in which the combination of high strength and low weight is attractive; ship building, air frame, transportation industry etc. are some areas in which the low weight can be significant value. Friction stir welding (FSW) is a new welding technique particularly well suited to aluminum alloys though this technique is also used for other materials. Fric...