UNLABELLED The purpose of this study was to validate a double-injection (DI) method with N-isopropyl-[123I]p-iodoamphetamine (IMP) to measure regional cerebral blood flow (rCBF) twice in a single session of dynamic SPECT and to elucidate a possible role of this method to identify patients with occlusive disease of major cerebral arteries, who might benefit from cerebral revascularization proced...

Chromium exists usually in the (III) or (VI) oxidation states. In contrast to Cr(III), which is essential to mammalian systems, Cr(VI) is dangerous for humans due to its toxicity and carcinogenic properties. Cr(VI) compounds are highly soluble, mobile and bioavailable compared to Cr(III) species. Chromium is usually analyzed using instrumental methods such as AAS or ICP, which are accurate and ...

This review summarizes the results of 15 controlled studies supplementing defined Cr(III) com pounds to subjects with impaired glucose tolerance. Three of these (3-4 /*mol Cr/d for >2 mo) produced no beneficial effects: serum glucose, insulin and lipid con centrations remained unchanged. The remaining 12 in terventions improved the efficiency of insulin or the blood lipid profile of subjects (r...

background: chromium (cr) is the most important element used to plate other metals and electroplating factories are still consid­ered to be the most important industries which pollute the environment to this metal. this paper describes a study con­ducted to determine the efficiency of reverse-osmosis (ro) as a membrane technique for removal of cr from wastewater sam­ples synthetically prepared ...

The increasing demand for wireless communication introduces efficient spectrum utilization challenge. To address this challenge, Cognitive Radio (CR) has emerged as the key technology, which enables opportunistic access to the spectrum. However, security is a very important issue but not well addressed in CR networks. In this paper, we focus on security problems arising from Primary User Emulat...

Six soil amendments including municipal solid waste compost (MSWC), coal fly ash (CFA), rice husk biochar prepared at 300°C (B300) and 600°C (B600), zerovalent iron (Fe0), and zerovalent manganese (Mn0) were evaluated to determine their ability to reduce mobility of chromium (Cr) in a Cr-spiked soil. The Cr-spiked soil samples were separately incubated with selected amendments at 2 and 5% [weig...

The increasing demand for wireless communication introduces efficient spectrum utilization challenge. To address this challenge, cognitive radio (CR) is emerged as the key technology; which enables opportunistic access to the spectrum. CR is a form of wireless communication in which a transceiver can intelligently detect which communication channels are in use and which are not, and instantly m...

The solidification of heavy metal Cr has always been a challenge in the treatment Cr-containing wastes, due to its high mobility alkaline environments. In addition, mechanism not fully investigated. this study, blast furnace slag (BFS)-based cementitious materials were used as binders for immobilization investigate different hydration products. From XRD, FTIR, XPS, and XANES analyses, it could ...

Poly-drug use refers to the use of two or more substances at the one time or repeatedly. It is common among both recreational and regular drug users across the world. Poly-drug use is a great contributor to the global number of deaths related to drug overdose. In this case, the likelihood of drug overdose and its pertaining complications in an individual is higher especially when benzodiazepine...

Giant condylomata are not usually seen nowadays in developed nations, but such cases are still seen in the under-resourced countries. Condylomata acuminata are commonly transmitted through sexual intercourse. Generally diagnosed based on their appearance. Giant condyloma acuminata also named Buschke- Löwenstein tumour (BLT) is a slow growing cauliflower-like tumor, locally aggressive and destru...