The 5000 series non-heat-treatable Al–Mg alloys are widely used as structural members, because of excellent combination weldability, corrosion resistance and mechanical properties. It is well known that these can become susceptible to inter-granular stress cracking. In the previous paper, authors revealed hydrogen embrittlement (HE) takes place in weld corner (fusion zone adjacent HAZ) an MIG-w...

We appreciate the article by Dr. Yousef A. Al-Turki about obesity among diabetic patients.1 The author has found a very high prevalence of obesity in diabetic patients attending a primary healthcare center in Riyadh. The prevalence of Body Mass Index (BMI) > 25kg/m2 was 76.5% in females and 61% in males. This has a definite relevance with regards to management of diabetes mellitus in these pati...

The influence of microorganisms from a salt marsh in the surface modification 5083 aluminum alloy (Al-Mg) seawater was evaluated. An immersion test performed for 50 days biotic and abiotic conditions, with electrochemical monitoring surface/cross-section characterization by SEM/EDX TEM after exposure, showed that induced formation homogenous layer on Al-Mg surface. This layer, which proved to b...

The effect of ascorbic acid (AA) and butylated hydroxyanisole (BHA) supplementation on aflatoxicosis in broiler chickens (1 to 42 days of age) was investigated (250, 500, 1000 and 2000 ppm for AA and BHA) in diet containing 1 ppm total aflatoxin (AF: 76.45% AFB1, 10.52% AFB2, 9.89% AFG1 and 3.14% AFG2). A total of 300 day-old broiler chicks were divided into ten treatment groups (T1=control; T2...

Kepler’s Harmonice Mundi includes a mysterious arrangement of polygons labeled Aa, in which many of the polygons have fivefold symmetry. In the twentieth century, solutions were proposed for how Aa might be continued in a natural way to tile the whole plane. I present a collection of variations on Aa, and show how it forms one step in a sequence of derivations starting from a simpler tiling. I ...

Abstract In this paper some experimental determinations on the temperature during milling process of aluminum alloys (5083, 6082 and 7075) were conducted, by using two methods: with contact non-contact, for different feed speeds. For reason, an adequate installation was used, so that can be measure simultaneously. The results are presented graphical dependencies as function speed, each type exp...