Developing Autonomous Observing Systems for Micronutrient Trace Metals

Developing Preparation Methods for Biological Samples to Determine Trace Amounts of Heavy Metals: A Review Study

Introduction: Perpetration of samples is one of the most important stages needed for trace residue analysis of biological specimens when human exposure assessment is required. The samples preparation process makes the analyte get more purified and enriched as well as more compatible to the analysis instrument systems. The present study has concentrated on a systematic review of different articl...

An Autonomous Earth - Observing Sensorweb

The need Although the South Sandwich Islands are uninhabited, NASA’s Terra and Aqua satellites fly overhead four times per day, skimming past at 7.5 kilometers per second and an altitude of 705 kilometers. Each spacecraft carries a Moderate Resolution Imaging Spectroradiometer (MODIS) instrument, which acquires resolution data of 250 to 1,000 meters/pixel about the islands as part of a 2,700-ki...

channel estimation for mimo-ofdm systems

تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با ‏خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز ‏الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی ‏محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...

Trace Metals and Phosphorous Speciation

Trace metals and hemoglobin metabolism.

Hemoglobin is composed of two pairs of globin chains to which are attached four iron-containing metalloporphyrins. Factors regulating hemoglobin synthesis include the availability of iron and the presence of heme. Heme production occurs by enzymatic synthesis and includes a step mediated by aminolevulinic acid dehydrase, which is zinc-dependent and, thus, susceptible to the toxic effects of oth...