896 research outputs found

    Scenario of Present and Future of Solid Waste Generation in India: A Case Study of Delhi Mega City

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    Solid waste generation is the by-product of the Urbanization, rapid industrialization, population growth and migration from the country side. It is commonly considered as an Urban Issue. It is highly related with Economic growth, degree of industrialization and consumption pattern and lavish lifestyle of urbanites.   On one hand more generation of Solid Waste indicate the economic development but on the other it increases environmental stresses. Solid Waste generation and management is a burning issue all over the world and the planners and policy formulators are finding it extremely difficult to handle this problem mainly because of haphazard and unchecked urbanization. Solid Waste contributes 3% of total Green House Gases Emission Globally, which are culprit for Global Warming and Climate Change. Huge amount of Solid Waste generation and their improper management worsen the air quality in the cities which ultimately affect the human health severely.The problem of Municipal Solid waste management is much more acute environmental problems in mega cities like Delhi where land available for landfill sites is scarce. Agricultural land of Delhi has been grabbed by the unauthorized private colonizers and builders by changing the land use overnight. Delhi is the adobe of 14 million people out of which approximately half of the population (52%) population lives in slums and 1400 unauthorized colonies. In 2012, 900 colonies have been authorized or regularized providing bare minimum civic amenities.  In the present study, an attempt has been made to provide a comprehensive review of the present infrastructure available, the future requirements to manage Municipal Solid waste and the Organizations and agencies involved in it. The main aim of this paper is to quantify the present generation of Solid Waste and project the generation in future by projecting population growth in Delhi Mega City. This study will be proved to be an eye opener for the city planners, managers, stakeholders and different Organizations and agencies which are actively engaged in the Management of this “Urban Menace”. Keywords: Solid Waste, Urbanization, Population, Green House Gases (GHGs

    Evaluation of Growth of Motor Vehicles Fleet and Ambience Air Quality in India

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    Increasing Vehicular population and deteriorating quality of air is the by-product of rapid growth of population in India. Undoubtedly on one hand transport sector plays a significant role in the overall development of a nation's economy, but on the other this sector accounts for a substantial and growing proportion of air pollution also. The urban expansion, industrialization, lack of services, energy and transport demands are leading to a vicious cycle of pollution. According to the Inter-governmental Panel on Climate Change (IPCC), the main sources of emission are energy (26%), transport (18%), industry (19%) and buildings (10%) are the main sources of emissions. The road traffic accounts for about 80% of the passenger traffic and 60% of the goods. For vehicular motors emits various pollutants, such as carbon monoxide, nitric-oxide, carbon dioxide and several organic compounds which are responsible for the deterioration of the environment. In developing countries like India especially, increasing demand for private vehicles is outpacing the supply of transport infrastructure – including both road networks and public transit networks. The result is growing congestion and air pollution. The transport sector in India consumes about 16.9% fossil fuel based energy sources. The aim of this paper is to focus on the state wise emissions of variety of pollutants and asses the quality of air, using region specific mass emission factors for each type of vehicles. Keywords- Transport, Quality of air, Industrialization, Development, Greenhouse gas (GHG

    Transport and Ambience Air Quality in Metro Cities of India

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    Increasing Vehicular population and deteriorating quality of air is the by-product of rapid growth of population and haphazard urbanization in India. The urban population in India has increased significantly from 62 million in 1951 to 285 million in 2001 and is estimated to grow to 540 million by the year 2021. In terms of percentage of total population, the urban population has gone up from 17% in 1951 to 29% in 2001 and is expected to increase up to around 37% by the year 2021. About 55 million vehicles were playing on Indian roads in 2001. The annual growth rate of motor vehicle population in India has been about 10% during the decade (1991-2001), It is seen that two wheelers are growing faster than cars. The basic problem is not the number of vehicles in the country but their concentration in a few selected cities, particularly in metropolitan cities. It is alarming to note that 32 percent of all vehicles are plying in metropolitan cities alone; these cities constitute about 11 percent of country’s total urban population. During the year 2000, more than 6.3 million vehicles were plying in mega cities, which constitute more than 13 percent of all motor vehicles in the country. Mumbai is carrying the highest vehicles compared with other mega cities. Cities like Bangalore, Hyderabad, Jaipur, Nagpur, Pune show a vehicle growth higher than the mega cities like Delhi, Kolkata etc., presently.  Undoubtedly on one hand transport sector plays a significant role in the overall development of a nation's economy, but on the other this sector accounts for a substantial and growing proportion of air pollution also. The urban expansion, industrialization, lack of services, energy and transport demands are leading to a vicious cycle of pollution. The main aim of this paper is to analyze air pollution caused by increasing number of vehicles and its effect on the environment at present and in future by projecting the number of vehicles and emission load. It also deals with the planning measures that should be adopted in India to solve the problem of increasing vehicular pollution. Keywords: Transportation, Environment, Pollutants, Emission, Developmen

    Scenario of Present and Future of Solid Waste Generation in Metro Cities of India

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    Rapid industrialization, urbanization, population growth and migration from the country side are resulted in Solid Waste generation, which is commonly considered as an Urban Issue.  It is highly related with Economic growth, degree of industrialization and consumption pattern and lavish lifestyle of city dwellers. Solid Waste generation and management is a burning issue all over the world and the planners and policy formulators are finding it extremely difficult to handle this problem mainly because of slapdash and unchecked urbanization. Solid Waste contributes 3% of total Green House Gases Emission Globally, which are culprit for Global Warming and Climate Change. Huge amount of Solid Waste generation and their improper management worsen the air quality in the urban areas which results in health problems. When the urbanization expands, the amount of municipal solid waste increases rapidly even faster than the rate of urbanization, one of the most important by-products of an urban lifestyle, is growing even faster than the rate of urbanization. Ten years ago there were 2.9 billion urban residents who generated about 0.64 kg of Municipal solid wastes per person per day (0.68 billion tons per year). Hence, today these amounts have increased to about 3 billion residents generating 1.2 kg per person per day (1.3 billion tons per year). By 2025 this will likely increase to 4.3 billion urban residents generating about 1.42 kg/capita/day of municipal solid waste (2.2 billion tons per year). The main aim of this paper is to quantify the present generation of Solid Waste and project the generation in future by projecting population growth in Metro Cities and find out the causative factors for the same. In the present study, an attempt has been made to provide a comprehensive review of the present infrastructure available, the future requirements to manage Municipal solid wastes and the Organizations and agencies involved in it. The main aim of this paper is to quantify the present generation of Solid Waste and project the generation in future by projecting population growth in Metro Cities and find out the causative factors for the same. Keywords: Solid Waste, Urbanization, Population, Green House Gases (GHGs

    Students' Perception of Computer Based Approach to Examining Undergraduate Accounting Courses in the University of Maiduguri, Nigeria

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    Conventionally, undergraduate students in Universities are been examined using the paper based approach. However, with the advancements in Information Computer Technology (ICT), universities have introduced the electronic based approach of examination. This paper is an exploratory study that investigates students' perception of computer based approach for examining undergraduate accounting courses in University of Maiduguri. The study was conducted using structured questionnaires administered to 122 purposively selected undergraduate students from four departments who had taken electronic based exams in accounting courses. The Instrument’s reliability was established using the Cronbach alpha coefficient and items were found to be consistent in measuring each construct. Data was coded and analyzed with the aid of Statistical package for Social Sciences (SPSS) version 23. The results from the Factor Analysis showed that Students’ Assessment of E-exam Facilities, Technical Challenges Encountered by accounting students during e-exams, Students’ Views about Enhancing E-exam were principal factors that influenced Students perception of E-exam for examining undergraduate accounting courses in University of Maiduguri. Keywords: Computer Based Examination, Undergraduate Students, Accounting Courses, Nigeria. DOI: 10.7176/EJBM/11-8-03 Publication date:March 31st 201

    Water Quality Monitoring of Unhas Lake Water

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    The Hasanuddin University has two lakes / site that form a reservoir ecosystem network of water potential as a buffer zone soil water conservation both inside the campus and the region around the Unhas campus. Therefore, Unhas Lake water resources must be protected in order to get clear and healthy water for humans and other living things and should be monitored for water quality regularly and continuously. The research method is observational method with a descriptive study design. The water samples were taken from Unhas Lake which is divided into five sampling points determined by purposive sampling method. Based on physical parameters test results of five sampling points obtained, Unhas Lake Water temperatures were quite stable, ranged between 27,2°C-28,2°C. TDS test results obtained that TDS levels of Unhas Lake Water ranged from 129 mg/l-140 mg/l and were under water quality standard for Class 1 that requires TDS level maximum 1000 mg/l. Meanwhile, TSS test results that meet class I quality standard was station 2, 3, 4, ranged between 10 mg/l-26 mg/l, while stations (points) that did not meet the quality standard for Class 1 were station 1 and 5 i. e 60 mg/l and 90 mg/l, while the maximum permissible level was 50 mg/l. Based on chemical parameters test results, quality of Unhas Lake Water did not meet the quality standard criteria for Class 1 listed in Government Regulation Number 82 Year 2001 for parameters ammonia, BOD5, COD, DO, and nitrite. Meanwhile, the chemical parameters for class 1 quality standard that meet are iron, fluoride, nitrate, and sulfate. Based on microbiological parameters test results of five sampling points showed that Fecal coliform bacteria level at stations (points) 1, 2, 3, 4, and 5 were 295 MPN/100 ml, 4352 MPN/100 ml, 17329 MPN/100 ml, 142 MPN/100 ml, and 30 MPN/100 ml, Fecal coliform bacteria with the highest number was at station (point) 3 and the lowest was at station (point) 5. The number of total coliform bacteria at stations 1, 2, 3, 4, and 5 were 24196 MPN/100 ml, > 24196 MPN/100 ml, > 24196 MPN/100 ml, 10462 MPN/100 ml, and 10462 MPN/100 ml, total coliform bacteria with the highest number were at station (point) 2 and 3 and the lowest were at station (point) 4 and 5

    Inferring Previously Uninstalled Applications from Residual Partial Artifacts

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    In this paper, we present an approach and experimental results to suggest the past presence of an application after the application has been uninstalled and the system has remained in use. Current techniques rely on the recovery of intact artifacts and traces, e.g., whole files, Windows Registry entries, or log file entries, while our approach requires no intact artifact recovery and leverages trace evidence in the form of residual partial files. In the case of recently uninstalled applications or an instrumented infrastructure, artifacts and traces may be intact and complete. In most cases, however, digital artifacts and traces are al- tered, destroyed, and disassociated over time due to normal system operation and deliberate obfuscation activity. As a result, analysts are often presented with partial and incomplete artifacts and traces from which defensible conclusions must be drawn. In this work, we match the sectors from a hard disk of interest to a previously constructed catalog of full files captured while various applications were installed, used, and uninstalled. The sectors composing the files in the catalog are not necessarily unique to each file or application, so we use an inverse frequency-weighting scheme to compute the inferential value of matched sectors. Similarly, we compute the fraction of full files associated with each application that is matched, where each file with a sector match is weighted by the fraction of total catalog sectors matched for that file. We compared results using both the sector-weighted and file- weighted values for known ground truth test images and final snapshot images from the M57 Patents Scenario data set. The file-weighted measure was slightly more accurate than the sector-weighted measure, although both identified all of the uninstalled applications in the test images and a high percentage of installed and uninstalled applications in the M57 data set, with minimal false positives for both sets. The key contribution of our work is the sug- gestion of uninstalled applications through weighted measurement of residual file fragments. Our experimental results indicate that past application activity can be reliably indicated even after an application has been uninstalled and the host system has been rebooted and used. The rapid and reliable indication of previously uninstalled applications is useful for cyber defense, law enforcement, and intelligence operations. Keywords: digital forensics; digital artifact; digital trace; partial artifact; residual artifact; uninstalled applicatio

    A Cytosolic Multiprotein Complex Containing p85\u3cem\u3eα\u3c/em\u3e is Required for \u3cem\u3eβ\u3c/em\u3e-Catenin Activation in Colitis and Colitis-Associated Cancer

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    Wnt/β-catenin signaling is required for crypt structure maintenance. We previously observed nuclear accumulation of Ser-552 phosphorylated β-catenin (pβ-CatSer-552) in intestinal epithelial cells (IEC) during colitis and colitis-associated cancer. Data here delineate a novel multiprotein cytosolic complex (MCC) involved in β-catenin signaling in the intestine. The MCC contains p85α, the class IA subunit of PI3K, along with β-catenin, 14-3-3ζ, Akt, and p110α. MCC levels in IEC increase in colitis and colitis-associated cancer patients. IEC-specific p85α-deficient (p85ΔIEC) mice develop more severe dextran sodium sulfate colitis due to delayed ulcer healing and reduced epithelial β-catenin activation. In colonic IEC, p85α deficiency did not alter PI3K signaling. In vitro shRNA depletion of individual complex members disrupts the MCC and reduces β-catenin signaling. Despite worse colitis, p85ΔIEC mice have reduced tumor burden after azoxymethane/dextran sodium sulfate treatment. Together the data indicate that the β-catenin MCC is needed for mucosal repair and carcinogenesis. This novel MCC may be an attractive therapeutic target in preventing cancer in colitis patients

    A systematic review of barriers and enablers to South Asian women’s attendance for asymptomatic screening of breast and cervical cancers in emigrant countries

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    Abstract Objectives The aim of this review was to identify the cultural, social, structural and behavioural factors that influence asymptomatic breast and cervical cancer screening attendance in South Asian populations, in order to improve uptake and propose priorities for further research. Design A systematic review of the literature for inductive, comparative, prospective and intervention studies. We searched the following databases: MEDLINE/In-Process, Web of Science, EMBASE, SCOPUS, CENTRAL, CDSR, CINAHL, PsycINFO and PsycARTICLES from database inception to 23 January 2018. The review included studies on the cultural, social, structural and behavioural factors that influence asymptomatic breast and cervical cancer screening attendance and cervical smear testing (Papanicolaou test) in South Asian populations and those published in the English language. The framework analysis method was used and themes were drawn out following the thematic analysis method. Settings Asymptomatic breast or cervical screening. Participants South Asian women, including Bangladeshi, Indian, Pakistani, Sri Lankan, Bhutanese, Maldivian and Nepali populations. Results 51 included studies were published between 1991 and 2018. Sample sizes ranged from 25 to 38 733 and participants had a mean age of 18 to 83 years. Our review showed that South Asian women generally had lower screening rates than host country women. South Asian women had poorer knowledge of cancer and cancer prevention and experienced more barriers to screening. Cultural practices and assumptions influenced understandings of cancer and prevention, emphasising the importance of host country cultures and healthcare systems. Conclusions High-quality research on screening attendance is required using prospective designs, where objectively validated attendance is predicted from cultural understandings, beliefs, norms and practices, thus informing policy on targeting relevant public health messages to the South Asian communities about screening for cancer

    Marginal Integrity of Class-I Restorations, Restored with Amalgam and Bonded Amalgam; A Comparative Study

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    Objective: To compare the marginal integrity of Class-I amalgam and bonded amalgam restorations in maxillary and mandibular molars at seven days, three, six and twelve-months intervals. Study Design: Comparative prospective study. Place and Duration of Study: Department of Operative Dentistry, Armed Forces Institute of Dentistry, Rawalpindi Pakistan,from Jul 2017 to Jul 2018. Methodology: A total number of 114 patients of either gender with an age range of 14-45 years having Class-I cavities in first and second maxillary and mandibular molars on both sides were equally distributed in two groups. Group-A received conventional Amalgam, and Group-B received bonded amalgam restorations. All the fillings were placed and carved using routine instruments used for amalgam restorations, and the restorations were polished after 24 hours. The patients were initially evaluated for marginal ditching around restorations with the help of a dental mirror and explorer at seven days,followed by inspection at 3, 6 and 12 months. Results: Of the 114 participants, all showed excellent marginal integrity at seven-days intervals regardless of the restorative material used. However, marginal integrity deteriorated swiftly with time among those 57(50%) participants who acquired conventional Amalgam. Marginal integrity at 3, 6 and 12-months period was 51(89.5%), 35(61.4%) and 17(29.8%), respectively.Bonded amalgam restorations performed superiorly with 100%, 56(98.2%) and 43(75.4%) successful marginal integrity at 3, 6 and 12-months, respectively. Conclusion: Bonded amalgams can be a better substitute than non-bonded amalgam restorations with superior longevity in marginal integrity. Keywords: Amalgam, Bonded amalgam, Marginal integrity, Micro-leakage, Marginal deterioration, Restoration longevity
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