For the purpose of applying a modified 5083 alloy (New 5083M alloy) with high Mg content in various automotive sheet parts, stretch forming behavior was studied tensile mode at wide range processing conditions. The tests were conducted by using test machine under temperature ranges 100–400 °C and strain rate 0.001–1 s?1. results showed that has superior mechanical properties to commercial eleva...

The aim of this work is not only the synthesis of black ceramic pigment with spinel structure using local and inexpensive minerals (chromite and manganese ores) but also throw some light on the relations between the structure and the colour of obtained pigment. Ultimate utilization spinel solid solution in ceramic materials is mostly due to their structure characteristics, their thermal and che...

The Sudarium of Oviedo has been studied intensively with a petrographic (polarizing) microscope. It is composed of pure flax fibers, and they show the same characteristics as the Shroud of Turin. The technology used to prepare the linen cloth appears to be identical to that described for Roman times by Pliny the Elder (Natural History XIX, 3, 16-18). Flax fibers are mostly crystalline cellulose...

A 46-year-old man presented with a 1-month history of fever. He had undergone peritoneal dialysis for 7 years to treat endstage renal disease and underwent renal transplantation in 2006. For 10 days, he presented with minimal scrotal swelling and discomfort. Ultrasonography showed that both testes were normal in size and had normal echogenicity, but the right epididymis was enlarged, showing mo...

In Difflugia corona, a free-living amoeboid cell, locomotion is hampered by a heavy shell or test made of sand grains and other debris. Locomotion involves pseudopod extension, attachment to the substratum, and forcible pseudopod retraction which pulls the shelled cell body forward. When observed through a polarizing microscope, the extending pseudopodia appear isotropic or very weakly birefrin...

BACKGROUND The heterogeneity of conditions underlying respiratory distress, whether classified clinically as acute lung injury (ALI) or the more severe acute respiratory distress syndrome (ARDS), has hampered efforts to identify and more successfully treat these patients. Examination of postmortem lungs among cases clinically diagnosed as ARDS identified a cohort that showed a consistent morpho...

Vertical alignment of liquid crystal (LC) was achieved in an easy and effective way: in situ photopolymerization of dodecyl acrylate (DA) monomers initiated by polyimide based on 3,3′,4,4′-benzophenonetetracarboxylic dianhydride and 3,3′-dimethyl-4,4′-diaminodiphenyl methane (BTDA-DMMDA PI). The alignment behavior and alignment stabilities were characterized by a polarizing optical microscope (...

Bovine insulin has long been known to self-assemble in vitro into amyloid fibrils. We have observed a further higher-order self-association of the protein into spherical structures, with diameters typically around 50 microm but ranging from 10 to 150 microm. In a polarizing light microscope, these structures exhibit a "Maltese-cross" extinction pattern typical of spherulites. Spherical structur...

Ambitious studies of Earth-like extrasolar planets are outlined in the context of an exploration initiative for a return to the Earth's Moon. Two mechanism for linearly polarizing light reflected from Earth-like planets are discussed: 1) Rayleigh-scattering from a planet's clear atmosphere, and 2) specular reflection from a planet's ocean. Both have physically simple and predictable polarized p...