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R.B.L. 굽타,V.N. 파닥,O.P. 베르마,Gupta, R.B.L.,Pathak, V.N.,Verma, O.P. Korean Society of Applied Entomology 1985 한국식물보호학회지 Vol.24 No.3
Influence of temperature, relative humidity, spore washing and spore drying on conidial germination of Alternaria porri(Ell.) Cif. was studied. Maximum conidial germination occurred at 100% relative humidity prevailing for 6 hours or more at $25^{\circ}C$. Conidial germination decreased with increase in number of spore washings. Drying of conidia for more than half an hour caused significant decrease in germination. In all the experiments, conidial germinatio increased with increase in incubation period.
R.B.L. GUPTA,V.N. PATHAK,O.P. VERMA 한국응용곤충학회 1985 한국응용곤충학회지 Vol.24 No.3
Influence of temperature, relative humidity, spore washing and spore drying on conidial germination of Alternaria porri(Ell.) Cif. was studied. Maximum conidial germination occurred at 100% relative humidity prevailing for 6 hours or more at . Conidial germination decreased with increase in number of spore washings. Drying of conidia for more than half an hour caused significant decrease in germination. In all the experiments, conidial germinatio increased with increase in incubation period.
Seasonal PM<sub>10</sub> dynamics in Kathmandu Valley
Aryal, R.K.,Lee, B.K.,Karki, R.,Gurung, A.,Kandasamy, J.,Pathak, B.K.,Sharma, S.,Giri, N. Pergamon Press ; Elsevier [distribution] 2008 Atmospheric environment Vol.42 No.37
Data on ambient PM<SUB>10</SUB> levels from six locations in the Kathmandu Valley recorded by means of continuous sampling using low volume air samplers from October 2002 to March 2007 were used to investigate PM<SUB>10</SUB> concentration dynamics in the valley. Monthly average data of the urban areas, which have much higher concentrations than the rural areas, even exceeded the daily standard level of PM<SUB>10</SUB>, in Nepal, 120μmm<SUP>-3</SUP>. Repetitive peaks and troughs each year indicated annual patterns. Monthly average showed seasonal patterns are different between rural area and urban sites. The highest monthly average concentration was observed in February, the end of winter in urban areas where as in rural found in spring, and the lowest concentration was observed in July (monsoon period). The continuous increase in PM<SUB>10</SUB> concentration from December to February in urban areas showed accumulation of PM<SUB>10</SUB> in the ambient air during the wintertime. Rainfall in June and September, during the monsoon period, caused a PM<SUB>10</SUB> concentration decrease, demonstrating that precipitation is effective in removing PM<SUB>10</SUB> from the valley. Cross correlation analyses among the PM<SUB>10</SUB> levels measured simultaneously at the sampling stations showed a poor relationship in winter; however, there were good relationships in the monsoon and post-monsoon seasons. Both the PM<SUB>10</SUB> concentration and the air-mixing environment in the valley were closely associated with the temperature and wind speed.
Rohit R. Powar,Varsha D. Phadtare,Vinayak G. Parale,Sachin Pathak,Pravina B. Piste,Dnyandevo N. Zambare 한국세라믹학회 2019 한국세라믹학회지 Vol.56 No.5
Chromium-doped zinc ferrite nanoparticles with the general formula CryZnFe2-yO4 (y = 0, 0.025, 0.05, 0.075, and 0.1) were synthesized by a surfactant-assisted chemical co-precipitation route using metal nitrate salt precursors. The phase purity and structural parameters were determined by powder X-ray diffraction. The concentration of Cr3+ doped into ZnFe2O4 (ZF) noticeably affected the crystallite size, which was in the range of 22 nm to 36 nm, and all samples showed a single cubic spinel structure without any secondary phase or impurities. The lattice parameter, X-ray density, and skeletal density increased with an increase in the Cr-doping concentration; on the other hand, a decreasing trend was observed for the particle size and porosity. The influence of Cr3+ substitution on ZF magnetic properties were studied under an applied field of 15 kOe. The overall results revealed that the incorporation of a small amount of Cr dopant changed the structural, electrical, and magnetic properties of ZF.
Bhar, R.,Pathak, N.N.,Paul, S. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.10
Three groups of 7, 8 and 8 barrows (22 weeks age; 35 kg body weight), reared on grower diets were fed ad libitum on three isonitrogenous finisher diets containing 50, 71 and 92% wheat bran by replacing maize grain till the attainment of about 74 kg slaughter weight. Growth pattern, average daily gain, feed intake, feed/gain ratio and carcass traits were similar in all the groups. The digestibility of DM, OM, CF, NFE total carbohydrate and energy (DE) decreased (p<0.01) with the increased level of wheat bran in the diet. However, CP digestibility was comparable among all the diet and the digestibility of EE was significantly (p<0.01) higher in grainless diet ($FD_3$). It appears that maize grain may be completely replaced with wheat bran in the diet of crossbred pigs without any adverse effect on their performance with respect to feed intake, body weight gain and carcass characteristics.
Powar, Rohit R.,Phadtare, Varsha D.,Parale, Vinayak G.,Park, Hyung-Ho,Pathak, Sachin,Kamble, Pravin R.,Piste, Pravina B.,Zambare, Dnyanashwar N. Elsevier 2018 Ceramics international Vol.44 No.17
<P><B>Abstract</B></P> <P>In the present study, the chemical co-precipitation technique was adopted to synthesize Zn<SUB>x</SUB>Co<SUB>1-x</SUB>Fe<SUB>2</SUB>O<SUB>4</SUB> (ZCF) (0 ≤ x ≤ 1) ferrites. The thermogravimetric-differential thermal analysis results revealed that above 405 °C, the precursor had decomposed and ferrite formation had occurred. The structure and morphology of the prepared ferrite nanoparticles were investigated using X-ray diffraction, Fourier transform infrared spectroscopy, and field emission scanning electron microscopy (FE-SEM). The synthesized polycrystalline nanoparticles had a cubic spinel structure and the crystallite size was in the range of 6.09–12.98 nm. The prepared ferrites appeared as nearly spherical nanoparticles with a particle size in between 0.13 and 0.23 µm, as confirmed using FE-SEM. The elemental composition was determined using the energy-dispersive X-ray spectroscopy technique. The influence of the Zn-substituted cobalt ferrites (ZCF) on the structural, morphological, and magnetic properties were studied. The magnetic properties of the ZCF samples such as saturation magnetization, remanence magnetization, and coercivity measured at room temperature were 0.387–2.065 emu/g, 0.057–1.282 emu/g, and 60–1834 Oe, respectively. It was confirmed from the nature of the hysteresis loops that the given ZCF samples can be considered as a soft magnetic material.</P>
Powar, Rohit R.,Phadtare, Varsha D.,Parale, Vinayak G.,Pathak, Sachin,Piste, Pravina B.,Zambare, Dnyandevo N. The Korean Ceramic Society 2019 한국세라믹학회지 Vol.56 No.5
Chromium-doped zinc ferrite nanoparticles with the general formula Cr<sub>y</sub>ZnFe<sub>2-y</sub>O<sub>4</sub> (y = 0, 0.025, 0.05, 0.075, and 0.1) were synthesized by a surfactant-assisted chemical co-precipitation route using metal nitrate salt precursors. The phase purity and structural parameters were determined by powder X-ray diffraction. The concentration of Cr<sup>3+</sup> doped into ZnFe<sub>2</sub>O<sub>4</sub> (ZF) noticeably affected the crystallite size, which was in the range of 22 nm to 36 nm, and all samples showed a single cubic spinel structure without any secondary phase or impurities. The lattice parameter, X-ray density, and skeletal density increased with an increase in the Cr-doping concentration; on the other hand, a decreasing trend was observed for the particle size and porosity. The influence of Cr<sup>3+</sup> substitution on ZF magnetic properties were studied under an applied field of 15 kOe. The overall results revealed that the incorporation of a small amount of Cr dopant changed the structural, electrical, and magnetic properties of ZF.