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Search Results: 1 - 10 of 1526 matches for " Bhola Nath Dhakal "
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Analysis of Channel Geometry and Sediment Transport in Palung and Chitlang Watersheds Using GIS
Bhola Nath Dhakal
Journal of Hydrology and Meteorology , 2009, DOI: 10.3126/jhm.v6i1.5490
Abstract: Channel geometry and sediment transport have been analyzed using Geographic Information System and statistical methods in Palung and Chitlang sub-watershed of Kulekhani watershed located in the Central Hills of Nepal, which covers 87.9 sq. km of land surface.
Study on the use of tobacco among male medical students in Lucknow, India
Kumari Ranjeeta,Nath Bhola
Indian Journal of Community Medicine , 2008,
Abstract: Objectives: Is use of tobacco a major health problem among medical students? To find out the factors associated with the use of tobacco. Materials and Methods: A cross-sectional study was done on 250 undergraduate male medical students using a pre-designed, pre-tested questionnaire to study about the problem and various correlates of the tobacco use. Data was collected and analysed using Excel and SPSS software. Results: Among the tobacco users (28.8%), smoking was found in 87.5% and tobacco chewing in the form of gutka, khaini, gulmanjan (locally available forms of tobacco) in 37.5% as the predominant means of the use of tobacco. The mean age of our sample was 23.5 years. The residential background, i.e., rural or urban, and religion were not significantly associated with the use of tobacco in the present study. Hostellers were found to be more frequent tobacco users as compared to day-scholars. There was a familial aggregation of the use of tobacco. The factor initiating the use of tobacco was usually peer pressure. Conclusion: Tobacco use is a significant problem among the male medical students and we need to take steps to stop its use by them so as to prevent them from being exposed to its hazardous effects. This will also make their role in the advocacy of the smoking cessation activities more trustworthy.
Sensing Behaviour of Some Nanocomposite Systems  [PDF]
Dipankar Chakravorty, Bhola Nath Pal, Shilpi Banerjee, Amrita Mandal, Sreemanta Mitra, Dhriti Ranjan Saha
Soft Nanoscience Letters (SNL) , 2013, DOI: 10.4236/snl.2013.34A004
Abstract: Silver nanoparticles of diameters 3.4 to 13.2 nm grown at the interfaces between silicate glass and some oxide crystallites exhibited about six orders of magnitude reduction in resistivity for a relative humidity change from 25% to 80%. Sn-SnO2 nano core-shell structure prepared within a gel-derived silica glass film by electrodeposition technique followed by heat treatment showed large change in resistivity as a function of humidity. The resistivity also changed due to gas flow of CO2, C2H5OH and NO2, respectively. The latter arose because of reduction/oxidation of Sn4+/Sn2+ species present at the shell layer of the nanostructures. Nickel nanosheets of thickness ~0.6 nm grown within the interlayer spaces of Na-4 mica crystallites showed a change of dielectric permittivity (5%) for an applied magnetic field of 1.2 Tesla. An inhomogeneous model was used to explain this behavior. Two dimensional CuO phase was grown within the channels of diameter ~5 nm of mesoporous SiO2 structure. A magnetodielectric (MD) parameter M.D. of 4.4% was obtained in this case. BaTiO3 nanoparticles of diameter ~25 nm having pores with diameter 10 nm showed multiferroic behavior which arose due to the presence of oxygen vacancies as a result of large surface area present. An M.D. parameter of 11% was found. Similarly mesoporous LiNbO3 of 10 nm diameter showed an M.D. parameter of ~4.5% at a magnetic field 1 Tesla. A giant magnetocapacitance effect with a value of 44% at 1.5 T was observed in nickel zinc ferrite (NZF) impregnated mesoporous silica. A magnetocapacitance of 51% at magnetic field 1.7 T was found in the case of nanocomposites comprising of iron ion containing silica based nanoglass and mesoporous silica. In the last two examples the behavior was explained on the basis of Catalan model of space-charge polarization with extracted values of magnetoresistance of the NZF and nanoglass phases being 58%.
A study on determinants of immunization coverage among 12-23 months old children in urban slums of Lucknow district, India
Nath Bhola,Singh J,Awasthi Shally,Bhushan Vidya
Indian Journal of Medical Sciences , 2007,
Abstract: Context: To find out the suitable factors for raising the coverage of immunization. Aims : To determine the coverage and to identify the various factors of primary immunization. Settings and Design : Urban slums of Lucknow district. Methods and Material : WHO 30-cluster sampling technique was used for the selection of the subjects. Mother, father or relative of a total of 510 children with 17 children per cluster were interviewed in the study. Statistical Analysis : Chi-square test, binary logistic regression and multinomial logistic regression analysis were done to test the statistical significance of the association. Results: About 44% of the children studied were fully immunized. Multinomial logistic regression analysis revealed that an illiterate mother (OR=4.0), Muslim religion (OR=2.5), scheduled caste or tribes (OR=2.3) and higher birth order (OR≈2) were significant independent predictors of the partial immunized status of the child; while those associated with the unimmunized status of the child were low socioeconomic status (OR=10.8), Muslim religion (OR=4.3), higher birth order (OR=4.3), home delivery (OR=3.6) and belonging to a joint family (OR=2.1). Conclusions: The status of complete immunization is about half of what was proposed to be achieved under the Universal Immunization Program. This emphasizes the imperative need for urgent intervention to address the issues of both dropout and lack of access, which are mainly responsible for partial immunization and nonimmunization respectively.
KAP Study on Immunization of Children in a City of North India – A 30 Cluster Survey
Bhola Nath,Singh JV,Shally Awasthi,Vidya Bhushan
Online Journal of Health & Allied Sciences , 2008,
Abstract: Background: To determine the knowledge, attitude and practices about immunization among respondents of children aged 12-23 months.Methods: A total of 510 respondents were interviewed in the urban slums of Lucknow district of India, using 30 cluster sampling technique from January 2005 to April 2005. A pre-tested structured questionnaire was used to elicit the information about the knowledge, attitude and practices of the respondents regarding immunization. Results: Knowledge regarding the disease prevented, number of doses and correct age of administration of BCG was highest among all the categories of respondents. The paramedical worker was the main source of information to the respondents of completely (52.0%) and partially immunized (48.5%) children while community leaders for unimmunized children. Those availing private facilities were more completely immunized, as compared to the government facilities. 55.8% of those who took 20 minutes to reach the immunization site were completely immunized as compared to 64.1% of those who took more than 20 minutes.Conclusion: Considering the incomplete knowledge, and inappropriate practices of the people, the policy makers and medical professionals require Herculean efforts to raise the knowledge and to break the old beliefs of the people
The Local Environmental, Economic and Social Tragedies of International Interventions on Community Based Forest Management for Global Environmental Conservation: A Critical Evaluation  [PDF]
Bhubaneswor Dhakal
Open Journal of Forestry (OJF) , 2014, DOI: 10.4236/ojf.2014.41010
Abstract:

This study reviewed the policies and outcomes of international support for forest management in Nepal and answered whether international support on forest management in developing countries resulted in positive socioeconomic and environmental outcomes at local communities. The evaluation is based on the socio-ecological theory and synergies-tradeoff model of forestry ecosystems goods and services. The study shows that the international interventions influenced national policies and community forestry practices, which contributed to the remarkable increase of forest stock. The new forestry institutions increased timber product supplies to urban users and contributed to offsetting of greenhouse gas emission of affluent societies in overseas. However, the intervention spoiled centuries of old forestry practices, which had contributed to the evolvement of socio-ecological condition, sustained local economy and environment systems. The new forestry institutions and practices locked local opportunities of multipurpose uses of forest, worsened water yield and local knowledge, and hampered local economic activities. Consequently they affected habitat diversities for forest based species, and forest resource supplies for sustaining agrobiodiversities and local food security. In reality the interventions increased benefit to distant users (urban users in the country and affluent societies in overseas) and further marginalized local communities and particularly socially disadvantaged people. The paper shows that the international forestry policies and supports are technically wrong or poorly based on science which is against their promise of providing better technical supports and benefiting local communities in developing countries. It argues that the interventions created many complexities in forestry institutions and practices which require too costly endeavor to change and address the local socioeconomic and environmental problems. The paper has explained the root cause of the international policy problem on many schools of thought.

 

Impact of Cardamom Cultivation on the Composition and Dynamics of Soil Seed Banks in a Conservation Forest in Sri Lanka: Implications for Conservation  [PDF]
Balram Dhakal
Open Journal of Forestry (OJF) , 2017, DOI: 10.4236/ojf.2017.73019
Abstract: Cultivation of cash crops, such as cardamom (Elettaria cardamomum) in the forest understorey is a common practice in many tropical forests. Over time, cultivation may change forest structure and species composition, leading to gradual degradation of biodiversity and ecosystem services. Effective conservation of these forests requires an enhanced understanding of the demographic processes such as soil seed bank that may greatly influence future forest composition. We examined how the soil seed bank structure and composition responds to cardamom cultivation in a high conservation value Sri Lankan montane rain forest. Soil samples from natural forest with abandoned cardamom plantations (CP) and adjacent natural forest (NF) patches without cardamom were collected in dry and wet seasons. Soil samples were spread out in trays in a shade house and germination was recorded weekly for 19 weeks. The density of seeds in the soil seed bank was much higher in CP than NF. While grasses and forbs contributed the highest number and percentage of seeds in soils of both forest types, their densities in the soil seed bank were 9 and 2 times greater in the CP than the NF, respectively. Seeds of the non-native herbs Ageratina riparia and E. cardamomum were 4 and 20 times greater in the soil of CP, respectively. Seeds of light demanding tree species such as Macaranga indica were restricted to soils of CPs. Overstorey tree community of each forest type was poorly represented in their respective soil seed banks. The high density of seeds of pioneer trees and non-native herbs in the soil of CPs, combined with higher light transmission to the ground floor may exacerbate competition for resources with the seedlings of late successional trees of high conservation value. To overcome this barrier and enhance conservation value of the forest, restoration strategies may need to focus on transplanting seedlings of these species into forest with abandoned cardamom plantations.
Twitter and Polls: Analyzing and estimating political orientation of Twitter users in India General #Elections2014
Abhishek Bhola
Computer Science , 2014,
Abstract: This year (2014) in the month of May, the tenure of the 15th Lok Sabha was to end and the elections to the 543 parliamentary seats were to be held. A whooping $5 billion were spent on these elections, which made us stand second only to the US Presidential elections in terms of money spent. Swelling number of Internet users and Online Social Media (OSM) users could effect 3-4% of urban population votes as per a report of IAMAI (Internet & Mobile Association of India). Our count of tweets related to elections from September 2013 to May 2014, was close to 18.21 million. We analyzed the complete dataset and found that the activity on Twitter peaked during important events. It was evident from our data that the political behavior of the politicians affected their followers count. Yet another aim of our work was to find an efficient way to classify the political orientation of the users on Twitter. We used four different techniques: two were based on the content of the tweets, one on the user based features and another based on community detection algorithm on the retweet and user mention networks. We found that the community detection algorithm worked best. We built a portal to show the analysis of the tweets of the last 24 hours. To the best of our knowledge, this is the first academic pursuit to analyze the elections data and classify the users in the India General Elections 2014.
Clearing Deleterious Proteins for Healthier Aging  [PDF]
Ian Macreadie, Sudip Dhakal
Open Journal of Social Sciences (JSS) , 2019, DOI: 10.4236/jss.2019.75010
Abstract:
The build-up of deleterious proteins is one of the biggest problems in aging. The brain, the organ most sensitive to this phenomenon, seeks to maintain the correct balance by the process known as proteostasis but this process declines with aging. Reduced proteostasis causes major age-related diseases such as Alzheimer’s Disease, Parkinson’s Disease, and prion diseases, where aberrant proteins are known to associate with such diseases. Being able to restore proteostasis is likely to slow age-related decline in brain function, but the challenges are to find chemo preventatives that can enhance proteostasis to youthful levels, and to know how to administer these chemopreventative agents. A combination of epidemiology and studies in a convenient model system are providing approaches to find answers to these important questions.
The Problem of Infertility with Hyperprolactenemia
Samjahana Dhakal
Nepal Journal of Obstetrics and Gynaecology , 2010, DOI: 10.3126/njog.v5i1.5053
Abstract: DOI: http://dx.doi.org/10.3126/njog.v5i1.5053 NJOG 2010 Jul-Aug; 5(1): 7-11
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