background: heavy metals contaminated environment constitutes a serious problem for human and other organisms. moreover, metals such as cd, pb, and cr are toxic metals. therefore, the purpose of this study was to evaluation of cd, pb, and cr in the muscle of cow, calf, and sheep slaughtered in sanandaj city from iran. methods: this was a descriptive cross-sectional study in sanandaj city in nov...

Zinc (Zn) and chromium (Cr) appeared to be the most promising elements in the therapeutics of diabetes mellitus (DM). The objective of the study was to identify the modulating activities of Zn and/or Cr in vivo and in vitro mitogenic of lipopolysaccharide (LPS) and phytohaemagglutinin (PHA) on peripheral lymphocyte and glycemic control and some anti oxidant enzymes in streptozocin-induced diabe...

BACKGROUND AND PURPOSE Diffusion tensor imaging (DTI) and MR spectroscopy are noninvasive, quantitative tools for the preoperative assessment of gliomas with which the quantitative parameter fractional anisotropy (FA) and the concentration of neurometabolites N-acetylaspartate (NAA), choline (Cho), creatine (Cr) of the brain can be determined. Measurements of FA and NAA reflect the integrity of...

The study aimed to determine free radical scavenging activity, trace elements, and the heavy metals contents of pigments extracted from Donax trunculus shells obtained at Giresun Black Sea coast. Free activity was determined by spectrophotometric DPPH ABTS methods. Heavy metal elements were measured ICP-MS. Pigments scavenged radicals. On other hand, it that had rich element concentrations (Fe ...

INTRODUCTION A recent British medical device alert suggested monitoring patients with metal-on-metal (MoM) articulations using blood metal ions. These blood samples are usually frozen immediately and shipped frozen for analysis. Simply posting the samples in the mail would lower the costs and simplify logistics of metal ion testing. The aim of this study was to determine whether the metal ion v...

Inorganic Cr(III) and Cr(VI) have contrasting biological, geochemical and toxicology effects. Cr(III) is considered as an essential species for the proper functioning of living organisms but Cr(VI) is toxic for the biological systems. An off-line speciation method using Chelex-100 has been practiced for speciation to Cr(III) and Cr(VI) from surface waters of rivers. The underlying principal of ...

PURPOSE The purpose of this study was to evaluate the marginal and internal gaps of Ni-Cr and Co-Cr copings, fabricated using the dental µ-SLA system. MATERIALS AND METHODS Ten study dies were made using a two-step silicone impression with a dental stone (type IV) from the master die of a tooth. Ni-Cr (NC group) and Co-Cr (CC group) alloy copings were designed using a dental scanner, CAD soft...

This paper addresses a cognitive radio (CR) network scenario where a relay is assigned to mitigate interference to primary users (PUs). We develop an average probability of successful secondary transmission (PSST) to introduce relay in the CR network. The power allocation is done using dual domain concept to maximize the system throughput as well as maintaining interference to an acceptable lev...