Papers by Vaishali Sharma
Adolescent, Identity, and Community Art
Positive Sociology of Leisure, 2020
Adolescence is a liminal period between childhood and adulthood that marks a significant stage of... more Adolescence is a liminal period between childhood and adulthood that marks a significant stage of growth and discovery. It is crucial to identify which leisure contexts provide adolescents with positive developmental experiences. Studies suggest that identity-related experiences and positive peer interactions during structured leisure participation are related to higher subjective well-being. This chapter suggests that involvement with a community art program can benefit adolescents in three broad ways: (a) explore and develop a positive identity, (b) develop skills and competencies, and (c) create a network of supportive peers and adults, which altogether have been linked to higher subjective well-being among adolescents, which leads them to make a positive contribution to their commnunity. The chapter provides a comprehensive model of community art program within the context of positive leisure and well-being.
Regional Economic Development Research, 2021
Agriculture is one of the fundamental features of the Indian economy. Agriculture along with its ... more Agriculture is one of the fundamental features of the Indian economy. Agriculture along with its allied activities employs near about half of the population of India. The Himalayas form the major mountain ranges of the country and covers the northern and northeastern parts of the country. The Himalayan mountain region covers around 10 states of India including Jammu and Kashmir (J & K). The main source of livelihood of these regions is agriculture but the nature of agriculture is still traditional and is of subsistence type. The productivity is also low and unsatisfactory. This paper is an attempt to highlight some of the main problems faced by the farmers and to analyze prospects for the future growth of Himalayan agriculture. It also focused on analyzing the present status of farmers in the region. This paper is focused on district Kishtwar of J & K, a major Himalayan territory. The paper is based on primary data and a sample of 400 farmers has been taken for the study. The findin...
RF MEMS Switches are one of the most prominent and remarkable future micro-machined products that... more RF MEMS Switches are one of the most prominent and remarkable future micro-machined products that have gain attention in last year’s. This Paper presents design, analysis and proposed fabrication process and simulation of a low actuated voltage shunt capacitive RF MEMS Switch. The Air gap in between the membrane and CPW signal line is 1.5 μm. The lowest actuation voltage of switch is 2 Volts. The proposed fixedfixed flexures beam design provides excellent RF Characteristics (Isolation -44 dB at 26.5 GHZ and insertion loss -0.26 dB at 26.5 GHZ). The results show that the proposed switch is suitable for Kaband applications.
Investigating the lattice dynamics and electronic structure of monolayer PdTe2
DAE SOLID STATE PHYSICS SYMPOSIUM 2019, 2020
Multi-technique characterization of shale reservoir quality parameters
Journal of Natural Gas Science and Engineering, 2019
Abstract A multitechnique characterization approach has been used to quantitatively and qualitati... more Abstract A multitechnique characterization approach has been used to quantitatively and qualitatively evaluate all the reservoir quality parameters, crucial for the exploitation and development of unconventional shale plays. Characterization methods, in particular FTIR, XRF, NMR, MICP, HPP, LPP and High Pressure Permeameter were used on selected 20 younger and older shale samples of Cambay to determine their true petrophysics, mineralogy, brittleness and fracability potential with respect to depth. Properties mainly porosity, permeability, pore size distribution, mineralogy, brittleness, pore sizes and fracability were determined. It was found that younger cambay has medium size pores with high porosity, low silica and high clay content. On the contrary, older cambay has good pore connectivity, rich in organic and clay content, fair brittleness index and capable of producing hydrocarbons. The performed multidisciplinary analysis is first of its kind research and will go a long way in shale gas research and development in India at pilot scale. The generated data can be helpful in minimizing the research gap and hence the challenges associated with the commercial development of these prolific shales.
Key to Empowerment of Indian Women: Is Duration of SHG Membership Effective?
SSRN Electronic Journal, 2019
This paper explores the relationship between women’s involvement in SHG and their empowerment. On... more This paper explores the relationship between women’s involvement in SHG and their empowerment. One set of questionnaires, to analyzing the respondent’s association with SHG’s and corresponding empowerment. Statistical tools, such as descriptive statistics, Pearson’s correlation and linear regression and ANOVA was used to analyze the data. This paper finds that the length of membership in SHGs had a significant impact on the intensity of women’s social, personal political, empowerment and their perceptions on awareness on health and hygiene aspects. The findings provide the pivotal insight that the duration of the SHG member can play a crucial role in women empowerment.
Journal of Petroleum Exploration and Production Technology, 2018
Applied Mathematics and Computation, 2018
In this paper, the problem of finding numerical solution for a system of Cauchy type singular int... more In this paper, the problem of finding numerical solution for a system of Cauchy type singular integral equations of first kind with index zero is considered. The analytic solution of such system is known. But it is of limited use as it is a nontrivial task to use it practically due to the presence of singularity in the known solution itself. Therefore, a residual based Galerkin method is proposed with Legendre polynomials as basis functions to find its numerical solution. The proposed method converts the system of Cauchy type singular integral equations into a system of linear algebraic equations which can be solved easily. Further, Hadamard conditions of well-posedness are established for system of Cauchy singular integral equations as well as for system of linear algebraic equations which is obtained as a result of approximation of system of singular integral equations with Cauchy kernel. The theoretical error bound is derived which can be used to obtain any desired accuracy in the approximate solution of system of Cauchy singular integral equations. The derived theoretical error bound is also validated with the help of numerical examples.
Demarcating Sweet Spots in Cambay Shale by Integrating Rock Eval Pyrolysis, Geomechanics and Seismic Data
Day 2 Tue, November 13, 2018, 2018
Unconventional shale oil/gas has been envisaged as one of the most promising resources of India. ... more Unconventional shale oil/gas has been envisaged as one of the most promising resources of India. India is having enormous untapped shale oil/gas potential of 96 TCF risked technically recoverable shale gas and 3.8 billion barrel risked technically recoverable shale oil. But, its development is still nascent and not very much conducive due to insufficient data availability and limited exploration and exploitation activities. The present study is an attempt to minimize the existing data gap and providing useful information pertaining to shale geochemistry, sweet spots delineation, geomechanics and fracability. Shale has an important feature of acting as both source as well as reservoir for hydrocarbon generation, expulsion and accumulation. Demarcating sweet spots are helpful in identifying these prospective hydrocarbons bearing zones in shales and hence in locating favorable drilling targets. High content of organic matter, kerogen richness, clay content, shale geomechanics are the k...
Low Frequency Study of Te<sub>2</sub> Cluster and CdSeTe Nanoparticles Embedded in Borosilicate Glass
Journal of Metastable and Nanocrystalline Materials, 2016
The objective of this paper is to study the low frequency acoustic vibration of Te2 cluster and C... more The objective of this paper is to study the low frequency acoustic vibration of Te2 cluster and CdSeTe nanoparticle embedded in borosilicate glass matrix. Lamb’s model is used to predict the occurrence of various mode to support the experimental observations by considering the elastic continuum model and fixed boundary condition. The presence of medium significantly affects the phonon peaks and results into the broadening of the modes. The linewidth is found to depend inversely on the size, similar to that reported experimentally.
Acta Crystallographica Section A Foundations and Advances, 2014
Bimetallic sulfate minerals, hydrated as well as anhydrous are important multifunctional material... more Bimetallic sulfate minerals, hydrated as well as anhydrous are important multifunctional materials which exhibit interesting properties like fast-ion conduction, ferroelectricity and magnetism with variation in temperature [1,2,3]. These properties are generally entwined with structural phase transitions and show structural frameworks made of interconnection of octahedra and tetrahedra [1]. Bimetallic sulfates, indeed are intercalation compounds of alkali ions generated by these frameworks and they possess high ionic conductivity [1]. In the present study, anhydrous and hydrous compounds of Na6M(SO4)4, (M=Mn, Ni, Co) were synthesized to understand the structural phase transitions and its relation to fast-ion conducting properties. Na6Mn(SO4)4, is monoclinic, space group P21/c with Z=2 and is isostructural to its Co and Ni analogues and shows high ionic conductivity and structural phase transition > 4500C. Na6Co(SO4).2H2O, Na6Ni(SO4).2H2O are isostructural with triclinic system ha...
The Indian Journal of Agricultural Sciences, 1998
A field investigation on rice (Oryza saliva L) \vas carried out in rainy season (kharif) 1994 to ... more A field investigation on rice (Oryza saliva L) \vas carried out in rainy season (kharif) 1994 to study the influence of flyash, fertilizer and farmyard manure application on yield and trace metal content in rice and its availabiliy in soil. Flyash, fertilizer and furmyard manure application in soil significantly increased the yield ofrice over the control, but fertilizer alongwith flyash proved to be superior to that with application of tlyash and manure. Trace metal content in rice grain at 50 and 100% NPK level in combinatiou with 10 tounes of farmyard manure did not vary significantly at 4 and 8% tlyash. Nickel content of rice grain (7.6 lIIg/kg) showed a significant increase at 8% level of flyash addition compared with 4% level (4.4 mg/kg). Total uptake of some heavy metals (pb, Ni and Co) by rice grown in 4 and 8% flyash amended soil were higher compared with the farmyard manure treated plots or that not treated with flyash. Flyash did nbt significantly intluence the availability oftrqce metals in soil. Results suggest that 4% flyash addition results in higher grain yields of rice without any possible traQe metal contamination of soil and plant.
Successful maternal and fetal outcome in a rare case of essential Thrombocythemia with pregnancy using Interferon alpha
Platelets, 2011
Through your esteemed journal, we are pleased and honored to write a case of uneventful pregnancy... more Through your esteemed journal, we are pleased and honored to write a case of uneventful pregnancy in a young woman suffering from essential thrombocythemia treated with interferona. Physicians caring for pregnant women with essential thrombocythemia face a difficult therapeutic decision. Careful observation might lead to thrombotic and obstetric complications, whereas cytoreductive therapy might have deleterious effects on the fetus. There is no consensus on the optimal treatment during pregnancy. Essential thrombocythemia (ET) is a chronic myeloproliferative disorder with increased risk of vascular complications [1]. It is characterized by platelet count 4600 000/ml, megakaryocytic hyperplasia, and splenomegaly with no alternative cause [2]. Two to three cases of ET are diagnosed per 100 000 individuals annually [3]. The median age of ET patients at presentation is around 60 years, though 20% of patients are women of child-bearing age [4]. It is more common in females, sex ratio M:F – 2:3 [5]. The risks of infertility, teratogenesis, and unfavorable pregnancy outcomes associated with the use of cytotoxic agents and/or with the disease itself cause concern with regards to the management of this subset of ET patients [6–8]. There is no consensus on the optimal treatment during pregnancy. Our patient 27 years primi-gravida with history of essential thrombocythemia (ET) for last 2 years, was referred to us at 9 weeks. She was diagnosed as ET during medical check-up for a job. She was on Hydroxyurea for last 2 years. This was a planned conception; she stopped Hydroxyurea, received periconceptional folic acid and continued low dose aspirin. Platelet counts at the time of her first visit were 5.3 lacs. JAK2 (V617F) mutation was found to be negative. Fortnightly platelet count monitoring was done. Aspirin and folic acid were continued. At 17 weeks period of gestation, platelet count was 13 lacs, and she was started on interferon , 3 miu, (s.c.) thrice weekly. She was diagnosed Gestational Diabetes Mellitus at 28 weeks, controlled on diet and insulin. At 29 weeks, she developed diagnosed Intra hepatic cholestasis of pregnancy and started on ursodeoxycholic acid. Her platelet counts gradually dropped to 3.5 lacs on Interferon alpha. At 34 weeks, Interferon alpha was stopped in view of her platelet counts being normal. While platelet counts monitoring was continued. Aspirin was stopped at 35 weeks. Fetal monitoring was done. She underwent elective caesarean section at 37 weeks for cephalopelvic disproportion. She delivered a 3.8 kg baby with no gross congenital anomaly. Injection Clexane 60 mg s.c. was started in view of her higher chances of thrombosis after 12 hours post op and continued for 2 weeks. Aspirin was started after 48 hours. Platelet counts started rising again and after 2 weeks. Platelet count was found to be 13 lacs and she was started on interferona. There were no signs of immunosuppression in baby. ET in pregnancy has been reported to be complicated by spontaneous abortion (25–50%), intrauterine death (3–5%), stillbirth, premature
Plant Physiology, 2012
Mixed-linkage glucan (MLG) is a cell wall polysaccharide containing a backbone of unbranched (1,3... more Mixed-linkage glucan (MLG) is a cell wall polysaccharide containing a backbone of unbranched (1,3)- and (1,4)-linked β-glucosyl residues. Based on its occurrence in plants and chemical characteristics, MLG has primarily been associated with the regulation of cell wall expansion due to its high and transient accumulation in young, expanding tissues. The Cellulose synthase-like F (CslF) subfamily of glycosyltransferases has previously been implicated in mediating the biosynthesis of this polymer. We confirmed that the rice (Oryza sativa) CslF6 gene mediates the biosynthesis of MLG by overexpressing it in Nicotiana benthamiana. Rice cslf6 knockout mutants show a slight decrease in height and stem diameter but otherwise grew normally during vegetative development. However, cslf6 mutants display a drastic decrease in MLG content (97% reduction in coleoptiles and virtually undetectable in other tissues). Immunodetection with an anti-MLG monoclonal antibody revealed that the coleoptiles an...
International Journal of Gynecology & Obstetrics, 2012
ObjectiveTo assess ovarian reserve in infertile women with genital tuberculosis planning to under... more ObjectiveTo assess ovarian reserve in infertile women with genital tuberculosis planning to undergo in vitro fertilization and in women of proven fertility, and compare the findings.MethodsA cross‐sectional study was conducted at an outpatient gynecology unit with 104 women with genital tuberculosis and 104 healthy controls. In each group, ovarian reserve tests consisted in estimating serum levels of follicle‐stimulating hormone (FSH), luteinizing hormone (LH), estradiol, and inhibin B on day 3 of a natural menstrual cycle. On the same day ovarian volume, number of antral follicles, and ovarian stromal blood flow were also estimated.ResultsThe mean FSH and LH levels were significantly higher, and the mean inhibin B levels were significantly lower, among the participants with genital tuberculosis than among the controls. Conversely, the mean ovarian volume and the mean number of antral follicles were significantly lower among the participants with genital tuberculosis, as were the me...
Extractability of tea catechins as a function of manufacture procedure and temperature of infusion
Food Chemistry, 2005
... Vaishali Sharma , Ashu Gulati Corresponding Author Contact Information , E-mail The Correspon... more ... Vaishali Sharma , Ashu Gulati Corresponding Author Contact Information , E-mail The Corresponding Author and SD Ravindranath. ... thermal inactivation by heating in an oven and bi-directionally rolled in a piezy roller as described by Gulati, Rawat, Singh, and Ravindranath ...
European Food Research and Technology, 2010
Seasonal and clonal variations in catechins, flavour component 2-phenylethanol and prephenate deh... more Seasonal and clonal variations in catechins, flavour component 2-phenylethanol and prephenate dehydratase (PDT) enzyme were studied in tea clones representing both Assam and China varieties growing in Kangra region of India. Catechins were analysed and quantified by HPLC, and 2-Phenylethanol was quantified by GC. Assam variety recorded higher amounts of catechins and PDT activity than China variety in all the three growth flushes. Activity of PDT and catechins content was high during mains growth flush followed by early and backend flush. 2-Phenylethanol content recorded higher levels in China variety compared to Assam variety, and higher content was observed in the early flush and decreased thereafter with progress in season in both the varieties. Decrease in catechins content, 2-phenylethanol and PDT activity was observed in the tea shoots infested by Exobasidium vexans over healthy shoots. Drought stress induced by withholding water for a period of 8 days caused initial increase in the contents of the catechins, 2-phenyethanol and PDT activity and decreased with 3 day onwards with an increase in the severity of water stress. Seasonal variations showed modulations in catechins and 2-phenylethanol in response to changing environmental conditions, suggesting that depending on the season there is higher flux of substrate towards the required product.
Medicinal Chemistry Research, 2014
In this study, we describe the synthesis of mono-and bis-1H-1,2,3-triazole-tethered b-lactam-isat... more In this study, we describe the synthesis of mono-and bis-1H-1,2,3-triazole-tethered b-lactam-isatin conjugates using copper-catalysed azide-alkyne cycloaddition reaction between mono-and di-propargylated azetidin-2-ones and N-alkylazido isatins. The synthesized conjugates were evaluated for their preliminary in vitro analysis against Trichomonas vaginalis at 50 lM. The efficacy of synthesized hybrids was observed to depend on the substituent at N-1 position of b-lactam ring, as well as the presence of single/double 1H-1,2,3-triazole linker. Among the synthesized conjugates, the presence of a ptolyl substituent at N-1 of b-lactam ring was preferred for good activity profiles while the increase in spacer length did not influence the efficacy of the compounds. Compounds with high levels of potency were further analysed to determine their IC 50 values, as well as cytotoxicity profiles against mammalian cells. The most active compound in the synthesized conjugates displayed an IC 50 value of 10.49 lM against cultured G3 strain of T. vaginalis and was non-toxic to cultured mammalian HeLa cells at the same concentration.
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Papers by Vaishali Sharma