Method of producing high T(subc) superconducting NBN films

Thin films of niobium nitride with high superconducting temperature (T sub c) of 15.7 K are deposited on substrates held at room temperature (approx 90 C) by heat sink throughout the sputtering process. Films deposited at P sub Ar 12.9 + or - 0.2 mTorr exhibit higher T sub c with increasing P sub N2,I with the highest T sub c achieved at P sub n2,I= 3.7 + or - 0.2 mTorr and total sputtering pressure P sub tot = 16.6 + or - 0.4. Further increase of N2 injection starts decreasing T sub c

Sustainable soil fertility management in coconut based multi-storeyed cropping system

A field experiment was conducted at College of Agriculture, Padannakkad, Kasaragod, Kerala state during 2012 to 2015 to develop appropriate cost effective practices for enhancing productivity and profitability of coconut based multi-storeyed cropping system involving a combination of coconut, noni, banana and long pepper in coastal sandy soil. The treatments consisted of eight combinations of four levels of NPK (100 per cent, 2/3 rd, 1/3 of the recommended NPK and basin management in the organic pathway) for coconut and two levels of NPK (100 and 75 per cent of the recommended dose) for the component crops in addition to five sole cropping systems namely, coconut (100 per cent NPK), coconut (organic), long pepper (100 per cent NPK), banana (100 per cent NPK) and noni (100 per cent NPK). Pooled analysis of the data revealed that basin management with 75 per cent NPK for component crops was found favourable for increasing the nut yield from 43 to 53 nuts palm-1 year-1. Soil properties and BCR of the system also improved as a result of the same treatment. Highest copra content (160.6 g nut-1) was recorded in theorganic basin management treatment supplied with 100 per cent NPK for component crops. An improvement in the soil nutrient status was also observed compared to the control.Â

Plastic reinforced fiberglass- an addition to beach litter

Beach litter or beach debris are solid wastes discarded intentionally by human beings or unintentionally either through land runoff or by waves. Marine litter is anthropogenic waste that has been released in water bodies or on land. Beach litter can become part of marine litter and vice versa due to water, wind and wave action

Effect of L-Ascorbic Acid on the Glycogen Contents During Mercury Intoxication in the Freshwater Bivalve, Parreysia Cylindrica

Freshwater bivalve, Parreysia cylindrica was exposed to acute (0.6 ppm) and chronic (0.12 ppm) doses of HgCl2 and HgCl2 with several concentrations of ascorbic acid. Glycogen contents from mantle, foot, gills, gonads and digestive glands were estimated after 24 hours and 96 hours of acute and 7 days and 21 days of chronic exposure from each group of test animals. Depletion of glycogen contents in different tissues caused due to mercury stress was much more as compared to those exposed to HgCl2 with ascorbic acid

Thin film memory matrix using amorphous and high resistive layers

Memory cells in a matrix are provided by a thin film of amorphous semiconductor material overlayed by a thin film of resistive material. An array of parallel conductors on one side perpendicular to an array of parallel conductors on the other side enable the amorphous semiconductor material to be switched in addressed areas to be switched from a high resistance state to a low resistance state with a predetermined level of electrical energy applied through selected conductors, and thereafter to be read out with a lower level of electrical energy. Each cell may be fabricated in the channel of an MIS field-effect transistor with a separate common gate over each section to enable the memory matrix to be selectively blanked in sections during storing or reading out of data. This allows for time sharing of addressing circuitry for storing and reading out data in a synaptic network, which may be under control of a microprocessor

Studies on the enzyme phenol oxidase in Penaeus indicus H. Milne Edwards.

Modern aquaculture is a new science and industry although traditional in origin. In the past fifteen years aquaculture production shows a steady increase from 5 million m etric tonnes (1973) to 14.5 million metric tonnes (1988). In future an increase in the population coupled with an increase in percapita consumption will definitely culminate in the intensified effort to increase aquaculture production. In this context prawns are very important as a candidate species for culture and foreign exchange earner for a developing country like India. In order to achieve a reliable mechanism for production in future, a thorough understanding of the cultured animal is necessary. In prawns the most important event occurring through out its life cycle is moulting, which is a mechanism for growth. Prawns like most other crustaceans are ensheathed in a thick outer covering called exoskeleton. The presence of this rigid exoskeleton limits the growth of this animal, which is solved by the periodic shedding of the exoskeleton followed by the secretion of new ones

Memory switches based on metal oxide thin films

MnO.sub.2-x thin films (12) exhibit irreversible memory switching (28) with an OFF/ON resistance ratio of at least about 10.sup.3 and the tailorability of ON state (20) resistance. Such films are potentially extremely useful as a connection element in a variety of microelectronic circuits and arrays (24). Such films provide a pre-tailored, finite, non-volatile resistive element at a desired place in an electric circuit, which can be electrically turned OFF (22) or disconnected as desired, by application of an electrical pulse. Microswitch structures (10) constitute the thin film element, contacted by a pair of separate electrodes (16a, 16b) and have a finite, pre-selected ON resistance which is ideally suited, for example, as a programmable binary synaptic connection for electronic implementation of neural network architectures. The MnO.sub.2-x microswitch is non-volatile, patternable, insensitive to ultraviolet light, and adherent to a variety of insulating substrates (14), such as glass and silicon dioxide-coated silicon substrates