Resistance of metals

Salmonella can carry multiple antibiotic-resistant and metalresistant genes and transmit these genes among strains worldwide. This study examined seventy-five Salmonella isolates from small-scale chicken farms (chicken feces, bedding, feed, wild animals) in Vinh Long province for the presence and relation of antibiotic and metal-resistance genes in these strains.

14p tuetuebinhan000 23-01-2025 2 2   Download

The purpose of the thesis research: Synthesis of new complexes of platinum and rare-earth elements containing quinoline's derivatives that are resistant to cancer cells, high antimicrobial activity or good fluorescence.

27p tunelove 10-06-2021 24 4   Download

This paper proves that the principal wear mechanism is abrasive and shock-abrasive wear; and analyzes materials test methods and techniques for wear rate identification.

11p lucastanguyen 01-06-2020 34 2   Download

A simplified procedure of lock-in thermography was developed and applied for characterization of nuclear materials. The possibility of thickness and thermal diffusivity measurements with the accuracy better than 90% was demonstrated with different metals and Zircaloy-4 claddings.

5p christabelhuynh 30-05-2020 9 2   Download

The low cycle fatigue (LCF) resistance of two different metal matrix composite (MMC) of AA6063 with 2% and 8% by volume silicon carbide (SiCp) particles having particulate size of 37 micron (400 mesh) at room temperature condition has been evaluated under fully reversed strain control testing.

15p tohitohi 19-05-2020 26 1   Download

Growth of the volumes of dangerous and critical welded metal structures constructed under low temperatures imposes additional requirements on the mechanical properties of the weld joints, particularly, on the impact resistance of the weld joint and on the stability of its values.

8p tohitohi 19-05-2020 16 1   Download

Bioremediation presents a potentially low cost and environmentally agreeable alternative to current physico-chemical remediation strategies. However, heavy metals such as mercury cannot be converted into non-toxic forms by naturally occurring bacteria. Annual global emissions estimates for mercury released into the environment are in the thousands of tons per year [1,2] while the remediation cost is in the thousands of dollars per pound. Finding new bioremediation technologies is an urgent need.

8p zingzing09 24-04-2013 48 4   Download

The prion protein (PrP) is the key protein implicated in transmissible spongiform encephalopathies. It is a metalloprotein that binds manganese and copper. The latter is involved in the physiological function of the pro-tein. We have previously found that PrP expression inPichia pastorisaffects intracellular metal ion concentrations and that formation of protease-resistant PrP is induced by additional copper and⁄or manganese.

8p galaxyss3 21-03-2013 30 3   Download

TheSaccharomyces cerevisiae vacuolar ATP-binding cassette transporter Ycf1p is involved in heavy metal detoxification by mediating the ATP-dependent transport of glutathione–metal conjugates to the vacuole. In the case of selenite toxicity, deletion of YCF1was shown to confer increased resistance, rather than sensitivity

10p cosis54 09-12-2012 36 2   Download

Introduction For the last 50 years, bisphenol A (BPA – CAS Nọ 80-05-7) is a chemical used primarily to make polycarbonate plastic and epoxy resins. Polycarbonate plastic possesses a unique balance of toughness, optical clarity, high heat resistance, and excellent electrical resistance and has many industrial uses including media products (eg., CDs, DVDs), electronic equipments, sport equipments, bicycle helmets, food containers, drink containers, baby bottles, medical devices and many other products.

6p genius111 26-04-2011 66 3   Download

Metal cutting puts extreme demands on the tool and tool material through conditions of high forces, high contact pressures, high temperatures, and intense chemical attack by difficult to cut work materials. In addition, the tool geometry and cutting conditions in terms of sharp edges, cyclic engagement and presence of cutting fluid will add to the severity. Most often cutting tools are used close to their ultimate resistance against these loads, especially to the limiting thermal and mechanical stresses. ...

14p cuunien 20-12-2010 118 18   Download