and solid wastes from industries and sewage disposal. Changes in groundwater quality are due to rockwater interaction and oxidation – reduction reactions during the percolation of water through aquifers.In the agriculture sector, large quantities of chemical fertilizers, pesticides and insecticides used to enhance the crop field, on leaching enter the aquifer thereby polluting the groundwater. In many areas, overuse of irrigation water and chemical fertilisers besides monoculture type of cropping pattern
presence of sodium borohydride (NaBH4). This reaction was monitored using UV–visible spectroscopy. The absorption peak of 4-NP underwent red shift from 317 nm to 400 nm immediately after addition of NaBH4, conforming change in the colour of the solution from yellow to intense yellow. This change in colour could reveal the formation of 4-nitrophenolate ions under alkaline conditions. This peak at 400 nm remained unaltered for many days in the absence of AuNPs. This indicates the inability of NaBH4 to reduce
reach destination successfully by which it sense the gradient if chemo attractant. However, still see the benefits of cooperative signalling, which helps to the directional movement of the bacteria toward the destination. Figure 4.4 Chemo attractant vs successful transmission The relative gain in terms of the successful transmission probability (due to cooperation) with varying chemo attractant density is illustrated. In the low-density conditions, the effect of cooperative communication, the bacteria
titration reaction(s), we can calculate the moles of analyte. Sadly, there is no obvious indication that the equivalence point has been reached most of the time and we stop adding titrant when end point is reached where there will be some colour changes of a substance added to the solution containing the analyte. The substances are known as indicators. The difference between the end point volume and the equivalence point volume is known as titration error. If the differences between the end point
2. Supplier Responsibility Report same industry but Different Countries: Apple Vs Samsung 2.1 Introduction: Supplier Responsibility is the social obligation and social expectation towards the organization to put high standards of code of conduct while maintain safe working conditions, treating worker fairly and using environmentally responsible practices in terms of improving the quality of life for their employees and their families as well as for the local community and society in general.
Everything You Need to Know: Synthetic vs. Natural Diamonds People are naturally suspicious of diamonds that have been artificially created, even though synthetic diamonds are excellent, eco-friendly alternatives to earth diamonds. So what are synthetic diamonds composed of? How does the chemical composition of an artificial diamond compare to that of a natural diamond? At Heart In Diamond, we created gorgeous memorial diamonds from either hair or cremains, or cremated ashes of a loved one who
Organic Farming vs. Conventional Farming There are various reasons of why organic farming is more sustainable than conventional agriculture. Concisely, the most important reasons can be explained as under. If we grow food organically, it benefits the soil, water cycles and biodiversity. The author T. Singh (2004) writes that the Green Revolution technology “has been very successful in achieving spectacular results in food grain production during the last three decades. However, signs of fatigue
UV rays killing the amphibian population The problem Frogs are very important to human beings. They can be used as an indicator if something is wrong in their environment because of the fact they live both in water and land and are susceptible to disease they also contribute to our society by getting rid of some dangerous pests and being part of mostly medical research but also the teaching of kids about anatomy. The amphibian population is declining rapidly though. It is believed to be because
potentially used as a bio-mimetic wing for the MFC. FEASIBILITY STUDY ON SILICON BASED MICRO FLYING CHIP There are different ways for an animal to fly in mid-air, China huge birds, they use direct wing muscles to move their wings and change the flapping frequencies and fight modes (flapping or gliding).The creations of vortices by the wings allow the flying motion of birds. For small insects, their flying mechanism is different from that of large birds. They use flapping
trisodium citrate were procured from S. D. Fine Chem. Ltd., Mumbai. Silver Nitrate was purchased from Research Lab Fine Chem. Industries, Mumbai. These chemicals were of AR grade and were used as received. All solutions of reacting materials were prepared in distilled water. 2.2 Synthesis of Polypyrrole Polypyrrole (PPy) was synthesized by chemical oxidative polymerization technique. 1M Pyrrole solution was prepared using distilled water. This mixture was then cooled to ~ 0°C in an ice bath and stirred