Contemporary forensic science hinges on DNA analysis to link an individual to a crime scene. Sources of DNA include bodily fluids, including saliva. Amylase is a primary enzyme in human saliva and thus, if detected, indicates possible presence of human saliva. Amylase paper can be used to map apparent saliva and thus provide a source from which DNA can be extracted and analyzed. In this study, the sensitivity of amylase paper was tested, firstly, using dilutions of an amylase standard and subsequently also tested using fresh human saliva. Three trials total were conducted, the first two using an amylase standard and a third using fresh saliva. The first two trials demonstrated firstly that detection of amylase is dependent on the material upon which amylase is deposited. The third trial demonstrated that amylase levels in human saliva may drop significantly somewhere around 48-72 hours. All trials were consistent in the concentration of amylase that Seratec Amylase Paper will detect.
In general, nanotechnology can be understood as a technology of design, fabrication and applications of nanostructures and nanomaterials, as well as a fundamental understanding of the physical properties and phenomena of nanomaterials and nanostructures. In recent years the development of industries like textile, leather, paint, food, plastics, and cosmetics is enlarged and these industries are connected with the discarding of a vast number of organic pollutants which are harmful to microbes, aquatic systems, and human health by influencing the different parameters. So the fabrication of those nanomaterials (coupled or doped) to form heterojunctions provides an effective way to better harvest solar energy and facilitate charge separation and transfer, thus enhancing the photocatalytic activity and stability. We expect this review to provide a guideline for readers to gain a clear picture of the fabrication and application of different types of heterostructured photocatalysts. In this review, starting from the photocatalytic reaction mechanism and the preparation of the photocatalyst, we review the classification of current photocatalysts, preparation methods, a factor that affects photocatalytic reaction, characterization of photocatalysts, and the methods for improving photocatalytic performance. This review also aims to provide basic and comprehensive information on the industrialization of photocatalysis technology.
This study delves into the forensic examination of textile fibers for identification through the application of the X-ray diffraction (XRD) technique. With the textile industry producing an array of materials, both natural and man-made fibers, the need to distinguish between them for forensic purposes becomes paramount. The primary objective of this research is to identify unique characteristics in fiber samples, differentiating between branded and non-branded company textiles. The focus is placed on fresh, unused cloth fibers obtained directly from shops. The study encompasses two broad categories of fibers: natural (such as cotton, silk, and wool) and man-made (including nylon, rayon, and polyester). Samples from both branded and non-branded textiles undergo analysis using XRD, a sophisticated method capable of revealing the crystallographic structure of materials. Results obtained from the XRD analysis unveil intensity peaks at various levels and degrees, providing distinctive patterns for individualization. Even within the same fiber category, such as polyester and cotton, discernible differences in intensity peaks facilitate the identification process. This research contributes to the advancement of forensic techniques by offering a reliable means of identifying textile fibers. The utilization of XRD not only allows for the differentiation between natural and man-made fibers but also enables discrimination among textiles produced by different companies. The implications of this study extend to forensic investigations, where the ability to precisely identify fibers can provide valuable evidence in criminal cases involving textiles.
The Journal Clinical Nephrology provides a good opportunity for readers to stay updated in the field of clinical nephrology. Additionally - it provides a good opportunity for authors to publish their work.
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Assaf Harofeh Medical Center, Israel
Leonid Feldman
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Department of Neurosurgery, Queen Elizabeth Hospital, Hong Kong
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Palestine College of Nursing, Khan Younis, Gaza Strip, Palestine
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Wollo University, Ethiopia
Atsedemariam Andualem
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Ekiti State University Teaching Hospital, Nigeria
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