RF Performance Enhancement of Gallium Oxide MOSFET using p-type NiO Pocket near Source and Drain Regions

The paper puts forward an impact of using p-type NiO pocket near the channel/drain and channel/source interface regions on the RF performance of the gallium oxide MOSFET. This arrangement results in smaller electric field near the respective junctions and helps to compensate for the leakages that arises from the increased value of parasitic components. The key figures of merits used in the analysis are transconductance (gm), intrinsic capacitances (gate to drain capacitance Cgd and gate to source capacitance Cgs), output conductance (gd), cut-off frequency (fT), transconductance frequency product (TFP), gain frequency product (GFP) and the gain transconductance frequency product (GTFP). The analysis was carried out by using Atlas 2D device simulator

Effect of Shifting Cultivation on Soil Microbial Biomass C, N and P under the Shifting Cultivations Systems of Kangchup Hills, Manipur, North- East India

ABSTRACT: The seasonal changes in the soil microbial biomass C, N and P have been carried out in four different shifting cultivation sites i.e., recently slashed and burnt site, 3-year old fallow site, 7-year old fallow site and a protected forest site. The soil microbial biomass C, N and P was found to be maximum in protected forest site followed by 7-year old fallow site, 3-year old fallow site and minimum in recently slash and burnt site. Seasonally microbial biomass C, N and P were highest during rainy season and lowest during winter in all the four study sites. A significant positive correlation was observed between the microbial biomass C, N and P with abiotic factors, such as, soil moisture, soil temperature and soil organic carbon in all the four study sites. Thereby it shows that soil temperature, soil moisture and organic carbon influences the microbial biomass C, N and P

A positive 'amount effect' in the Sahayadri (Western Ghats) rainfall

We present stable oxygen isotopic ratios (δ18O) of rainfall collected over three years (July to October 2000- 02) at Mangalore. We observe an apparent positive correlation between the monthly, amount-weighted mean oxygen isotopic ratio of the rainwater and monthly total rainfall, contrary to the generally expected negative trend in many island and continental stations. We offer an explanation for this observation and propose that the 'amount effect' in the annual rainfall still remains with a negative slope, and thus can be useful in palaeomonsoon reconstruction using oxygen isotopic variations of annually laminated speleothems

Growth, Biomass and Carbon Sequestration Potential of Different Poplar (Populus deltoides Bartr.) clones in Agroforestry System with Wheat (Triticum aestivum) Varieties in tarai belt of Uttarakhand

For two years, field experiments were carried out at Agro-Forestry Research Center of G.B.P.U.A. & T., Pantnagar, Uttarakhand (29°N Latitude, 79°30’ E longitude and at an altitude of 243.84 msl) during 2013-14 and 2014-15, to study the growth, biomass and carbon sequestration potentials of poplar clones in association with different wheat varieties in a sandy loam soil. The soil of the experimental site contained 1.175% of organic carbon, 259, 20 and 195 kg/ha available nitrogen, phosphorus and potassium, respectively. The soil was almost neutral in reaction (pH 8.2). The study was laid in split plot with poplar tree clones viz., S7C8, G-48, W-39 and Kranti in main plots and wheat varieties viz., DBW-17, PBW-502, UP-2748 and HD-2967 in sub-plots. Poplar trees were planted at spacing of 7.0m x 3.0m.Poplar clones S7C8 in 2013-14 and Kranti in 2014-15 recorded higher values of diameter at breast height (DBH) and tree height than clones W-39 and G-48. Wheat variety DBW-17 exhibited higher values of poplar growth than varieties PBW-502 and UP-2748. In 2013-14 clone S7C8 recorded the highest values of different components of trees biomass. In 2014-15, clone Kranti produced significantly higher stem, roots and total biomass than clones G-48 and W-39. The total carbon sequestered by the agroforestry system during both the years, was the highest with the clone Kranti (57.14 t/ha in 2013-14 and 65.69 t/ha in 2014-15). In 2014-15, the total carbon sequestered by clone Kranti was significantly higher than other clones. The total carbon sequestered by the agroforestry system was the lowest with the clone G-48.Except carbon stock in wheat plant biomass, wheat varieties did not affect the poplar growth, biomass and carbon stock of the agroforestry system significantly. Wheat variety DBW-17 in 2013-14 and HD-2967 in 2014-15 recorded the highest amount of carbon in plant biomass

A New Approach of Colour Image Encryption Based on Henon like Chaotic Map

In modern era of digital world, exchange of information in form of image often very frequently over communication channel, the secrecy of multimedia data like images becomes very important, The issue of secrecy for image resolved In many digital applications such as sensitive visual aids, broadcasting, military services, rare satellites images and confidential medical images etc. To reduce the processing overhead with the concern of Real-time data transmission application, to reduce such a huge file processing cost, we needs to enhance our encryption/decryption techniques. This paper proposed a novel image encryption technique based on Hannon like chaotic map. Chaos-based image encryption technique is one of the more promising encryption algorithms that provide very efficient and fast way of image encryption due to its ubiquitous phenomenon in deterministic nonlinear systems that exhibit extreme sensitivity to initial condition and random like behaviours. Keywords— Image RGB colour component, image encryption, Henon map, chaotic system

Diversity of Exopolysaccharide Producing Fungi from Foot Hills of Shivalik Ranges of Chandigarh Capital Region

In this investigation, the diversity of exopolysaccharide producing fungi of foot hills of Shivalik ranges of Chandigarh capital region have been studied. The study resulted in isolation of a total of 94 fungal isolates of which 52 isolates belonging to 17 different genera viz., Agaricus, Alternaria, Aspergillus, Aureobasidium, Candida, Curvullaria, Chaetomium, Fusarium, Ganoderma, Penicillium, Pleurotus, Polyporous, Rhizopus,  Saccharomyces, Stemophylium, Termitomyces, and Tricholoma etc. were found to possess the EPS producing potential. These isolates have been categorized into five different groups on the basis of the EPS quantities they produced. These included Group I with production range of : > 1g/l ; Group II with production range of : 1-2 g/l ; Group III with production  range of : 2-3 g/l ; Group IV with production range of : 3-4 g/l and Group V with production range of : 4-5 g/l. Out of these 52 EPS producing isolates, 11 were found to be the prominent producers with Auerobasidium RYLF 10 as the most potential isolate with EPS concentration of 4.60g/l followed by the species of Penicillium RYLF 35, Aspergillus RYLF 17 and Ganoderma RYMF 15. No correlation between EPS concentration and the biomass yield could be traced

Some Coupled coincidence and common fixed point theorems for hybrid pair of mappings

In this paper we extend the multi-valued mappings and obtain coupled coincidence points and common coupled fixed point theorems involving hybrid pair of single valued and multi-valued maps satisfying generalized contractive conditions in the frame work of a complete metric space. Keywords: coupled common fixed point, coupled coincidence point, coupled point of coincidence, w-compatible mappings, F-weakly commuting mappings