Is air a mixture or a compound ? Explain your answer. What makes a molecule toxic? Explain why styrene (CH2=CHPh) can be polymerized to polystyrene by all three methods of chain-growth polymerization. Explain why p-tert-butylphenol does not react with NaHCO3. ...
As a researcher, what is one How do we synthesize the things that we need from our diets? Why does diet matter in all this? Use examples to support your answer. What are the four toxic forms of oxygen? Explain why they are dangerous to cells. Describe how the toxicity of a ...
Aerobic degradation of waste water helps (a) In the consumption of major part of organic waste from the effluent. (b) In the formation of flocks which settle down as activated sludge and is later on used for biogas production. (c) This makes water clear
We must also look to the future and stay on track. Like many other groups, Arkema took widespread and immediate action in response to the crisis. We have had the full support of our employees, who have demonstrated incredible professionalism and commitment. Th...
Oxidants likehydrogen peroxideare essential in small quantities and are manufactured within cells. There is no dispute that oxidants are toxic in large amounts, and cells naturally generate their own anti-oxidants to neutralize them. It has seemed logical to many, therefore, to boost intake ofanti...
If you're working with particularly volatile, toxic, or smelly materials, using a chemical fume hood is a good idea. Hazard Pictograms: The Primary Hazard of a Chemical Let's move on to the important stuff. If you have the name of a chemical (the real name), how can you tell if it...
1. Biofilm structure: the polysaccharidic extracellular matrix by its multilayered structure, is a molecular filter and a barrier that prevents and delay infusion of biocides to target cells. Ito et al have shown that Ampicillin do not inhibit bacterial growth in E. coli biofilm when the ...
This chemical is the same toxic stuff found in teflon pots and pans. It can stay in the environment and in the human body for long periods of time. This chemical when heated has been linked to infertility, cancer and other diseases in lab animals. No long term studies have been conducted...
The brain does not have a classic lymphatic drainage system that is present in the peripheral vascular system; however, a glymphatic system that utilizes the PVS as a waste efflux conduit has been recently described by many and serves to remove toxic waste from the interstitium of the brain [...
Toxic effects of superoxide dismutase (SOD) overexpression are commonly attributed to increased hydrogen peroxide (H(2)O(2)) production. Still, published experiments yield contradictory evidence on whether SOD overexpression increases or decreases H(2)O(2) production. We analyzed this issue...