Redox

Aging Context Aging is treated as a vital factor in the etiology of human disease (ES-2014-aging). It is also an important risk factor for AD and PD onset and progression. Biologically, aging is an inevitable biological process that is characterized by a progressive decline in physiological function, including cognition, and by the increased susceptibility to disease (RX-2013). Oxidative stress and mitochondrial malfunction are two interdependent mechanisms that play a central role in brain…

In forensics, there is a lot of chemistry involved. The various processes that a forensic procedure requires includes basic skills and knowledge from chemistry. Since chemistry and forensics are so closely related, many of the same concepts are used in each field. That is why it is important to go into more detail to see what type of chemistry has to deal with this. It is very rare that there is a forensics specialist investigating a crime scene without there being any type of chemistry…

for the fact that life emerged roughly 3.8 billion years ago because the crater would have been on Earth by then. It is also believed that inside these freshwater crater basins, they would contain low salinity levels, a neutral pH level, variable redox states of iron and sulfur, low salinity, high potassium/sodium ratio, and the correct composition of modern day cells. However, this theory is inept at explaining the short geologic time gap between the formation of the first oceans and the…

CONTENT Contents What is a Breathalyzer? 3 History of a Breathalyzer 3 Importance of Breathalyzer 3 How the Breathalyzer works? 4 Chemical reactions that takes place in a Breathalyzer. 5 The accuracy and advantages of a Breathalyzer 6 The Limitations and Disadvantages of a Breathalyser 8 Interesting facts. 9 Conclusion 10 References 11 What is a Breathalyzer? A Breathalyzer or Breathalyser is a device used for estimating blood alcohol content(BAC) from a breath sample. History of a…

INTRODUCTION Tomato (Solanum lycopersicum L.) and Potato (Solanum tuberosum, L.) are the most economically important vegetable crops in Egypt and the most widely grown vegetables in the world. The disturbance of its production affects severely it's local and export impact, because it is considered a very important consumption crop with high nutritional value and a potential export crop for the Egyptian farmers. In Egypt about 20% of total area devoted for vegetable production is cultivated…

Introduction As humans are unable to produce Vitamin C (ascorbic acid) but still require it for proper body function, humans obtain Vitamin C from external sources.1 Historically, citrus fruits, which have a comparatively higher amount of Vitamin C, were eaten to achieve proper amounts of Vitamin C or prevent scurvy. During the age of long sea voyages, where fresh food was scarce, scurvy was prevalent and extremely detrimental .2 However, fruit was not always available or economically feasible.…

The reaction between Propanone and iodine under acidic condition Aims To find the order of reaction with respect to propanone, iodine and sulfuric acid, thus proposing a rate equation. Find rate constant at various temperature and with the use of the Arrhenius equation, find the activation enthalpy of the reaction. General Method {For step by step guide of the experiment see preparation page} By using known concentration of aqueous iodine solution (0.000 moldm-3, 0.005 mol dm-3, 0.015…

Microbes of the infected root canal system Historically, the most wide-spread method for detecting and characterizing bacteria has been by culturing. Culturing bacteria allows the analysis of their morphology, virulence, gram-staining pattern, the quantization of viable microorganisms, as well as the testing of their susceptibility to antibiotics. Consequently, this method may not allow normally viable bacteria to cultivate as the selected culturing media may not have the nutritional and…

in a dose dependent manner and the activity was compared to the standards such as BHT and ascorbic acid. The increased antioxidant activity in CBE and CQE extracts are due to the presence of high concentration of phenolic acids and flavonoids. The redox properties of phenolics and flavonoids chelate the metals and quenching the singlet oxygen. The total phenolic concentration showed close correlation with increased antioxidant activity, because, plant phenolics present in fruit and vegetables…

Discussion The mechanism of arsenic-induced neurotoxicity is not well defined. Several metabolites of arsenic are able to pass through the blood-brain barrier and accumulate in the hippocampus and some other locations [13]. This affects the intracellular Ca(2+) homeostasis and ultrastructures of hippocampal neurons. In relation to the amino acid neurotransmission, report reveal that arsenic-induced excessive glutamate accumulation in the extracellular space induces excitotoxicity [29]. Arsenic…