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      • SCIESCOPUSKCI등재

        STUDY OF COMPARATIVE MILK PRODUCTION AND REPRODUCTION OF JERSEY CATTLE UNDER USA AND PAKISTAN CONDITIONS

        Nawaz, M.,Anwar, M.,Mirza, M.A.,Nawaz, R. Asian Australasian Association of Animal Productio 1993 Animal Bioscience Vol.6 No.4

        In 1985, fifty Jersey cows were imported to Pakistan from United States of America (USA). This paper compares milk production and reproduction performance of imported cows and their daughters under USA and Pakistan conditions. The imported cows which had yielded 5,858 kg, of milk (305 d lactation) in the USA produced only 3,192 kg, at NARC. The milk production of their daughters averaged 2,617 kg, being 22% lower than their mothers under the same environment at NARC. Year and season of calving had no significant effects on milk production. Average milk production of the first lactation was 10% lower than the mean of the second, third and fourth lactations, but, the differences between lactation means were non-significant. Mean calving interval in the USA was 385 days, whereas the same cows had a longer (p<.01) calving interval of 490 days at NARC. The calving interval of the daughters was longer (452 d; p<.01) than their mothers calving interval in the USA, and shorter (p<.01) than their mothers calving interval in Pakistan. The low age at first calving suggests that locally born Jersey cows were not reproductively disadvantaged by the local environment and nutrition, suggesting the adaptability of this breed in the new environment.

      • Effect of toluene, an immiscible pollutant, on the photocatalytic degradation of azo dye

        Nawaz, M.,Kim, D.,Miran, W.,Kadam, A.,Heo, J.,Shin, S.,Jang, J.,Lim, S.R.,Lee, D.S. Korean Society of Industrial and Engineering Chemi 2015 Journal of industrial and engineering chemistry Vol.30 No.-

        An adverse effect of a water-immiscible pollutant, toluene, on the photocatalytic degradation of Direct Red 80 (DR80) with TiO<SUB>2</SUB> in an aqueous solution was observed when toluene was added as a continuous free layer. However, a more efficient photocatalytic system was obtained when toluene was added in the Pickering emulsion (PE) form with TiO<SUB>2</SUB>. With only UV and two different types of TiO<SUB>2</SUB> (more hydrophilic and large-sized type A TiO<SUB>2</SUB> and less hydrophilic and small-sized type B TiO<SUB>2</SUB>), 44% and 59% color removal was observed, respectively. Almost 20% decrease in color removal with toluene in the continuous free layer form was observed, however, the higher color removal was obtained when toluene was added as PE stabilized with type B TiO<SUB>2</SUB> than with type A TiO<SUB>2</SUB>. The higher color removal was owing to the good stability of PE stabilized with type B TiO<SUB>2</SUB>.

      • Photodegradation of microcystin-LR using graphene-TiO<sub>2</sub>/sodium alginate aerogels

        Nawaz, Mohsin,Moztahida, Mokrema,Kim, Jiho,Shahzad, Asif,Jang, Jiseon,Miran, Waheed,Lee, Dae Sung Elsevier 2018 Carbohydrate polymers Vol.199 No.-

        <P><B>Abstract</B></P> <P>In this study, sustainable graphene oxide-TiO<SUB>2</SUB>/sodium alginate and reduced graphene oxide-TiO<SUB>2</SUB>/sodium alginate aerogels were synthesized and the potential of these aerogels was investigated for microcystin-LR degradation in aqueous solution. Along with the role of alginate in the synthesis of aerogels, effects of different concentrations of photocatalyst, photolysis, pH, and combination of TiO<SUB>2</SUB> (anatase)/Degussa P25 with graphene were investigated in lieu of microcystin-LR photodegradation.The complete degradation of microcystin-LR was attained in case of reduced graphene oxide-TiO<SUB>2</SUB>/sodium alginate aerogel—not in graphene oxide-TiO<SUB>2</SUB>/sodium alginate aerogel case—by the synergistic effect of adsorption and photodegradation. The recyclability study of reduced graphene oxide-TiO<SUB>2</SUB>/sodium alginate aerogel demonstrated high stability and photoactivity and the degradation efficiency was not much hampered during six consecutive cycles of degradation reaction. The possible fragmentation pathways were also proposed based on identified intermediate products. High adsorption and degradation synergy and ease of separation/recycling of reduced graphene oxide-TiO<SUB>2</SUB>/sodium alginate aerogel can make it a suitable option for removing microcystin-LR from water systems.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Sodium alginate helped to synthesize a robust graphene-TiO<SUB>2</SUB> aerogel. </LI> <LI> Graphene-TiO<SUB>2</SUB>/sodium alginate aerogel efficiently degraded microcystin-LR. </LI> <LI> Synthesized aerogel was highly recyclable without producing any secondary pollution. </LI> <LI> In microcystin-LR degradation pathway, significant role of OH radicals was found. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

      • Efficient dye sensitized solar cell and supercapacitor using 1-ethyl 3-methyl imidazolium dicyanamide incorporated PVDF-HFP polymer matrix

        Nawaz, A.,Sharif, R.,Rhee, H.W.,Singh, P.K. Korean Society of Industrial and Engineering Chemi 2016 Journal of industrial and engineering chemistry Vol.33 No.-

        <P>Electrode and electrolytes are always playing a key role in developing good efficient devices. This paper reports the synthesis, characterization and application of low viscosity ionic liquid (1-ethyl 3-methyl imidazolium dicyanamide) incorporated into polymer matrix (PVDF-HFP). The samples were characterized using various experimental tools. Complex impedance spectroscopy shows that conductivity of polymer host increases with increasing ionic liquid (IL) concentration attains maxima and then decreases. Optical microscopy and scanning electron microscopy (SEM) reveals the reduction of crystalline matrix of polymer host by adding IL. The primarily fabricated devices using maximum conductivity film affirms that this material is promising candidate for dye sensitized solar cell (DSSC) and supercapacitor application. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.</P>

      • SCIESCOPUSKCI등재

        A Design Evaluation of Strained Si-SiGe on Insulator (SSOI) Based Sub-50 nm nMOSFETs

        Nawaz, Muhammad,Ostling, Mikael The Institute of Electronics and Information Engin 2005 Journal of semiconductor technology and science Vol.5 No.2

        A theoretical design evaluation based on a hydrodynamic transport simulation of strained Si-SiGe on insulator (SSOI) type nMOSFETs is reported. Although, the net performance improvement is quite limited by the short channel effects, simulation results clearly show that the strained Si-SiGe type nMOSFETs are well-suited for gate lengths down to 20 nm. Simulation results show that the improvement in the transconductance with decreasing gate length is limited by the long-range Coulomb scattering. An influence of lateral and vertical diffusion of shallow dopants in the source/drain extension regions on the device performance (i.e., threshold voltage shift, subthreshold slope, current drivability and transconductance) is quantitatively assessed. An optimum layer thickness ($t_{si}$ of 5 and $t_{sg}$ of 10 nm) with shallow Junction depth (5-10 nm) and controlled lateral diffusion with steep doping gradient is needed to realize the sub-50 nm gate strained Si-SiGe type nMOSFETs.

      • SCIESCOPUSKCI등재

        Productive and Reproductive Performance of Kajli and Lohi Ewes

        Nawaz, M.,Khan, M.A.,Qureshi, M.A.,Rasool, E. Asian Australasian Association of Animal Productio 1999 Animal Bioscience Vol.12 No.1

        Data from 22837 lambings of Lohi and Kajli ewes from 1962 through 1994 were used to analyse productive and reproductive traits and wool production, Overall litter size at birth averaged 1.33 being 1.45 for Lohi and 1.21 for Kajli ewes. The corresponding values at weaning were 1.23, 1.32 and 1.14, respectively. Litter size was consistently lowest for one year old, with a substantial increase at two, three and four years of ewe age and marginal increase thereafter, Ewes lambing in spring weaned 0.08 more lambs per parturition than ewes lambed in Autumn (p<0,01). Lamb birth weights were affected by ewe breed (p<0.01) and increased with ewe age. Overall lamb weaning weight (120 d) of 17993 lambs was 20.3 kg. Weaning weight was affected by breed, sire, year of birth, sex, rearing rank and weaning age (p<0.01). The highest mean weaning weight was 21.9 kg for Lohi lambs followed by Kajli lambs (18.8 kg), Lambs from Kajli ewes were 9% heavier at birth but 14% lighter at weaning. Twin born lambs were 18% lighter at birth and 13% at weaning than single born lambs. Male lambs were 3% heavier at birth and 4.5% heavier at weaning than female lambs. Overall annual mean wool production was 2,64 kg, Kajli ewes were heavier at breeding than Lohi ewes (i.e. 46.2 vs 44.8 kg). Lohi ewes being 3% less body weight produced 38% more wool and 18% more litter weaning weight than Kajli ewes, When average weight of lamb weaned per ewe weaning lambs was adjusted for ewe average metabolic body size, Lohi ewes were most efficient (i.e. arbitrary assigned value of 100) compared to Kajli ewes achieving only 83% of Lohi level.

      • Genetic diversity and population structure of Korean wild soybean (<i>Glycine soja</i> Sieb. and Zucc.) inferred from microsatellite markers

        Nawaz, Muhammad Amjad,Yang, Seung Hwan,Rehman, Hafiz Mamoon,Baloch, Faheem Shehzad,Lee, Jeong Dong,Park, Jong Hyun,Chung, Gyuhwa Elsevier 2017 Biochemical systematics and ecology Vol.71 No.-

        <P><B>Abstract</B></P> <P>Korea is considered one of the centers of genetic diversity for cultivated as well as wild soybeans. Natural habitats of wild soybeans are distributed across the Korean mainland and the islands surrounding the Korean peninsula. In this study, the genetic diversity of 100 mainland Korean wild soybean accessions was evaluated by using 42 simple sequence repeat markers covering 17 soybean chromosomes. All analyzed loci were polymorphic and a total of 114 alleles were found. The observed average genetic diversity was low (0.4). The results showed that the 100 selected accessions did not exactly follow the geographical distribution. These results were further confirmed by the phylogeny inferred from five morphological characteristics (i.e., leaf shape, leaf area, plant shape, seed area, and 100-seed weight). Together, the genetic and morphological evaluations suggested conclusively that the selected population did not follow the geographical distribution pattern. The present study could provide useful information for the <I>ex situ</I> conservation and exploitation of wild soybean accessions in soybean improvement stratagems, and will aid in further understanding about the phylogeography of the species in the Korean center of diversity.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Microsatellite analysis and morphological characterization of Korean wild soybean was done. </LI> <LI> Korean mainland wild soybeans have low genetic diversity. </LI> <LI> Selected populations do not follow geographical distribution pattern. </LI> </UL> </P>

      • KCI등재

        Mining public opinion: a sentiment based forecasting for democratic elections of Pakistan

        Nawaz Asif,Ali Tariq,Hafeez Yaser,Rehman Saif ur,Rashid Muhammad Rizwan 대한공간정보학회 2022 Spatial Information Research Vol.30 No.1

        Twitter has emerged as outstanding and most prominent social media in today’s technological age. The data proliferates in quick and words with its activities trigger get fast responses from the users. This platform is perfect for promoting political perspectives, particularly when election campaigns are on its peak. Political trends on Twitter media has been contemplated in the course of recent years. In the past research, both supervised and unsupervised methodologies have been used to analyze the Twitter trends. Most of the Tweet classification approaches utilized built in Dictionaries, Naı¨ve Bayes, K-Nearest Neighbors (KNN), decision tree and Support Vector Machines (SVM) classifiers. However, in case of democratic election these trends can be mined to predict the winning party. However, all such approaches produce poor results due to language issues, low accuracy, limited access to internet and lower literacy rate in less developed countries such as Pakistan. This research study, find the best possible way for collection of tweets related to different political parties and build a prediction model that may analyze sentiments and opinions expressed by peoples in their Tweets. In this research work, a prediction based model along with novel similarity measure has been proposed to predict the election results of political parties in Pakistan. The proposed work is composed of data collection, preprocessing, aspect extraction, aspect refinement and final prediction using Bayesian theorem. Form the experimental results, it is concluded that proposed approach perform better than existing techniques by obtaining almost 98% accuracy and efficiently cover the limitations of existing studies.

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