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Impact of open dumping of municipal solid waste on soil properties in mountainous region

Journal of Rock Mechanics and Geotechnical Engineering 2018年第4期10卷 725-739页

作者： anchal sharma Ashok Kumar Gupta Rajiv Ganguly Department of Civil Engineering Jaypee University of Information Technology

This paper presents the effect of open dumping of municipal solid waste(MSW) on soil characteristics in the mountainous region of Himachal Pradesh, India. The solid waste of dumpsite contains various complex characteristics with organic fractions of the highest proportions. As leachate percolates into the soil, it migrates contaminants into the soil and affects soil stability and strength. The study includes the geotechnical investigation of dump soil characteristics and its comparison with the natural soil samples taken from outside the proximity of dumpsites. The geochemical analysis of dumpsite soil samples was also carried out by scanning electron microscopy(SEM) and energy dispersive X-ray spectroscopy(EDS).Visual inspection revealed that the MSW consists of high fraction of organics, followed by paper. The soil samples were collected from five trial pits in the dumpsites at depths of 0.5 m, 1 m and 1.5 m. Then the collected soil samples were subjected to specific gravity test, grain size analysis, Atterberg’s limit test,compaction test, direct shear test, California bearing ratio(CBR) test and permeability analysis. The study indicated that the dumpsite soils from four study regions show decreasing trends in the values of maximum dry density(MDD), specific gravity, cohesion and CBR, and increasing permeability as compared to the natural soil. The results show that the geotechnical properties of the soils at all four study locations have been severely hampered due to contamination induced by open dumping of waste.

关键词： Municipal solid waste (MSW) Physical characterization Soil pollution Open dumping Scanning electron microscopy (SEM) Energy disperse X-ray spectroscopy (EDS)

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Tailoring of structural,optical and electrical properties of anatase TiO_(2)via doping of cobalt and nitrogen ions

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Journal of Materials Science & Technology 2022年第16期111卷 287-297页

作者： anchal sharma Puneet Negi Ruhit Jyoti Konwar Hemaunt Kumar Yogita Verma Shailja Prakash Chandra Sati Bhargav Rajyaguru Himanshu Dadhich N.A.Shah P.S.Solanki Department of Physics Eternal UniversityBaru SahibHimachal Pradesh173101India Centre of Excellence in Energy Science and Technology Shoolini UniversitySolanHimachal Pradesh173229India Department of Applied Science and Humanities Rajkiya Engineering CollegeBijnorUttar Pradesh246725India Department of Physics Rajiv Gandhi Government Post Graduate CollegeMandsaurMadhya Pradesh458001India Department of Physics Saurashtra UniversityRajkot360005India

Pure(pristine)anatase and mono–doped and co–doped derivatives of TiO_(2)having nitrogen(N)and cobalt(Co)as dopants with respective fixed doping concentrations of 0.7 mol.%and 1.0 mol.%were synthesized using auto–combustion sol–gel *** doping effects at corresponding non–metal and transition metal sites of TiO_(2)on the basis of the structural,optical and electrical properties have been investigated.X–ray diffraction(XRD)measurement confirms the formation of pure anatase phase of TiO_(2)for all samples having I41/amd space group of tetragonal structure which has been also verified by the Raman spectroscopy *** crystallographic parameters have been calculated by performing Rietveld refinement of XRD data including average crystallite size that has been observed in the range of10–15 *** anatase phase indicates the incorporation of Co^(2+)into TiO_(2)lattice which assists the substitution of N in place of oxygen in co–doped TiO_(2).The band gap tuning towards the visible region from3.2 to 2.1 e V has been achieved with mono–doping and co–doping of the N and Co in TiO_(2)*** can be described in terms of the formation of localized levels of N–2p and Co–3d states in mono–doping and an isolated intermediate band formation in co–doping *** properties have been investigated in details and explained as the synergetic effects of structural and inherent ionic characters of various *** observed band gaps of all doped samples lie within the visible region which makes them pertinent as the solar energy harnessing materials for photocatalytic and photovoltaic applications.

关键词： TiO_(2) Sol–Gel X–ray diffraction Electrical properties Optical properties

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Loss of the BRCA1-PALB2 interaction accelerates p53-associated tumor development in mice

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Genes & Diseases 2022年第3期9卷 807-813页

作者： Amar H.Mahdi Yanying Huo Ying Chen Pier Selenica anchal sharma Elise Merritt Nicola Barnard Chang Chan Shridar Ganesan Jorge S.Reis-Filho Britta Weigelt Subhajyoti De Bing Xia Rutgers Cancer Institute of New Jersey New BrunswickNJ 08903USA Department of Radiation Oncology Rutgers Robert Wood Johnson Medical SchoolNew BrunswickNJ 08903USA Department of Pathology Memorial Sloan Kettering Cancer CenterNew YorkNY 10065USA Department of Pathology and Laboratory Medicine Rutgers Robert Wood Johnson Medical SchoolNew BrunswickNJ 08901USA

The BRCA1-PALB2-BRCA2 axis,or the BRCA pathway,plays key roles in genome stability maintenance and suppression of breast and several other *** to frequent p53 mutations in human BRCA1 breast cancers and mouse mammary tumors from Brcal,Brca2 and Palb2 conditional knockout models,it is often thought that p53 inactivation accelerates BRCA1/2 and PALB2-associated ***,we studied tumor development in mice with a mutation in Palb2 that disengages the PALB2-BRCA1 interaction in different Trp53 *** than mammary tumors,Palb2 and Trp53 compound mutant mice developed,with greatly reduced latencies,lymphomas and sarcomas that are typically associated with germline Trp53 *** exome sequencing failed to identify any significant differences in genomic features between the same tumor types of Trp53 single mutant and Palb2;Trp53 compound mutant *** results suggest that loss of the BRCA pathway accelerates p53-associated tumor development,possibly without altering the fundamental tumorigenic processes.

关键词： BRCA1 BRCA2 Osteosarcoma P53 PALB2 Thymic lymphoma

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Studies on Rhizospheric Mycoflora of Tea (Camellia sinensis): In vitro Antagonism with Dominant Bacteria

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应用与环境生物学报 2007年第3期13卷 357-360页

作者： SINGH Shuchi SOOD anchal sharma Shivesh KUMAR Vivek SINGH Kamal Deep PANDEY Piyush Department of Microbiology Division of Life Sciences SBS (PG) Institute of Biomedical Sciences and Research Department of Soil and Water Public Authority of Agriculture Affairs & Fish Resources

Species of Trichoderma, Penicillium, Aspergillus and Mucor were found to dominate the rhizosphere of tea bushes in different regions of the Indian Himalayas. The Himachal Himalayas were dominated by Monilia humiscola (45.08%) and Mucor hiemalis (33.11%). In the Uttaranchal Himalayas, Aspergillus clavatum dominated the rhizosphere (54.01%), followed by A. flavous (20.07%). Although the fungal isolates require a mesophillic temperature (15 ℃ to 35 ℃), the tea rhizospheric isolates tolerate a wide range of temperatures (5 ℃ to 45 ℃). When tested for pH tolerance, these fungi showed a wide range (2.0 to 13.0) of pH tolerance under in vitro conditions. Seasonal variations also influenced the colony forming units (cfu) of the rhizospheric fungi, with the maximum forming in November and March, and the minimum in December^February. During this period, the populations of the fungi were found inversely proportional to the bacterial populations. In addition, the dominant bacteria in the tea rhizosphere, i.e., Bacillus subtilis and B. mycoides, showed antagonistic activity against fungal isolates by inhibiting the growth and causing structural abnormalities in mycelium. Tab 5, Ref

关键词：细菌茶拮抗作用真菌区系丛矮病优势菌种

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Comprehensive Review on Air Pollution Control Measures for Non-Attainment Cities of Uttar Pradesh, India

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Journal of Environmental Protection 2023年第3期14卷 139-162页

作者： Khyati sharma anchal Garg Varun Joshi University School of Environment Management GGS Indraprastha University Delhi India EnviroVigyan Non-Governmental Organization in Shahdara Delhi India Earth System Science Department Stanford University Stanford USA

Introduction: The Indian state of Uttar Pradesh (UP) for the past many years has been reported to have many cities with highly polluted air quality. The state has been taking meticulous steps in combating air pollution in the form of action plans, introduced especially in its 17 non-attainment cities (NAC). To assess the progress and development of these action plans in UP, the present study has done an in-depth analysis and review of the state’s action plans and city micro action plans. Materials and Methods: In this research study, the analysis of the latest action plan reports, micro action plan reports as well as the recommendations for combating air pollution-related issues in the 17 NAC of the UP state has been well documented. Uttar Pradesh Pollution Control Board (UPPCB) has prepared these reports to highlight the progress of the plans in response to the growing air pollution in these cities. The information present in the reports has been used to further study sector-specific, category-specific action plans, institutional responsibility, and the present status of the action plans. Results: On average, the highest weightage in action plans was given to sector-specific categories such as Road dust and construction activities (24%). It was also observed that Urban local bodies (~50%) were majorly responsible to implement the action points and 56% of the action points were jointly implemented by multiple agencies.

关键词： Air Pollution Air Quality Air Pollution Control Non-Attainment Cities India Uttar Pradesh Particulate Matter

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