In the modern motorcar production, more than 300 deep-drawn sheet metal parts are joined together by more than 3,000 spot welds on each car body. To check the spot welds within the framework of the quality assurance, different nondestructive test methods are available in addition to the destructive methods (tear down test, metallographic inspection): the chipping test and the ultrasonic test, w...

Three rapid methods (spot test, disk, and tube) for detecting urease production in anaerobic bacteria yielded results faster than the conventional method. The results were more consistent with the disk and tube methods than with the spot test. Blood agar plate growth gave more consistent results than growth from chopped-meat slants.

The capability to perform multicolor, wide field-of-view (FOV) fluorescence microscopy imaging is important in screening and pathology applications. We developed a microscopic slide-imaging system that can achieve multicolor, wide FOV, fluorescence imaging based on the Talbot effect. In this system, a light-spot grid generated by the Talbot effect illuminates the sample. By tilting the excitati...

formation of a fluorescent-dye layer on the surface of porous alumina, the porous alumina substrate was dipped in an ethanol solution containing 20 wt.-% dendrimer [13] and 4 × 10 M pyrromethene 597 (EXITON) for 1 min and then dried. The thickness of the fluorescent-dye layer was approximately 1 lm. Optically pumped lasing experiments were performed using a frequency doubled Nd:yttrium aluminum...

Microarray analysis is a critically important technology for genome-enabled biology, therefore it is essential that the data obtained be reliable. Current software and normalization techniques for microarray analysis rely on the assumption that fluorescent background within spots is essentially the same throughout the glass slide and can be measured by fluorescence surrounding the spots. This a...

background: glucose-6-phosphate dehydrogenase (g6pd) deficiency is the most frequent genetic enzymatic disorder in hu­man, which is inherited as an x-linked gene. it encodes a housekeeping enzyme, which is vital for cell survival. accord­ing to previous investigations, mediterranean mutation (c563t) of g6pd gene is the most prevalent mutation in some prov­inces of iran and neighboring countries...

BACKGROUND Differential gel electrophoresis (DIGE) is a technology widely used for protein expression analysis. It is based on labelling with fluorescent Cy dyes. In comparative fluorescence gel electrophoresis experiments, however, unspecific labelling using N-hydroxy-succinimide-ester-based labelling protocols was recently detected. Cross-talk was observed due to failure of the quenching proc...