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Search Results: 1 - 10 of 14220 matches for " Anupama Singh "
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Prediction of Effective Elastic Modulus of Biphasic Composite Materials  [PDF]
Anupama Upadhyay, Ramvir Singh
Modern Mechanical Engineering (MME) , 2012, DOI: 10.4236/mme.2012.21002
Abstract: Two semi-empirical approaches for prediction of elastic modulus of biphasic composites have been proposed. Developed relations are for pore free matrix and pore free filler and found to depend on nonlinear contribution of volume fraction of constituents as well as ratio of elastic properties of individual phases. These relations are applied for the calculation of effective elastic modulus mainly for Al2O3-NiAl, SiC-Al, Alumina-Zirconia, Al-Al2O3, W-glass and Flax-Resin composite materials. Theoretical predictions using developed relations are compared with experimental data. It is found that the predicted values of effective elastic modulus using modified relations are quite close to the experimental results.
Nanoparticle Paclitaxel (Nanoxel) as a Safe and Cost-Effective Radio-Sensitizer in Locally Advanced Head and Neck Carcinoma  [PDF]
Akshay Nigam, Anupama Sharma, Sanjeev Kumar Singh
Journal of Cancer Therapy (JCT) , 2012, DOI: 10.4236/jct.2012.31006
Abstract: Squamous cell carcinoma of the head and neck (SCCHN) is a common malignancy. It is the 7th most common malignancy. Approximately 45,000 new cases are diagnosed each year in the USA. In present study 10 patients were selected of age group between 40 - 60 years from Gwalior-Chambal region, among them 3 were females and 7 were males. 3 patients were suffering from tonsilitis, 4 from Laryngeal carcinoma, 2 from carcinoma in maxillary antrum and 1 patient was suffering from carcinoma of whole tongue. The aim of present study is to evaluate the safety of nanoparticle paclitaxel (Nanoxel, a plant alkaloid) in combination with radiation in the treatment of locally advanced head and neck carcinoma. Further the patients were divided in 2 groups. The 1st group received nanoxel (plant alkaloid) administered concomitantly with radiation therapy. 2nd group received gemcitabine administered in combination with radiation therapy. 9 patients showed response for the therapy. The adverse effects in arm A, 2 patients showed anemia less than 8 gm of Hemoglobin, 2 patient showed leucopenia and 1 patient showed diarrhoea, Nausea/vomiting were shown by 4 patients, in arm B, 1 patient showed leucopenia, 1 patient showed anemia less than 9 gm hemoglobin and 5 patient showed sensory neuropathy. Nanoxel (plant alkaloid) showed best results in the case of head and neck carcinoma. The dose of 30 mg/kg b.w showed best safety with best clinical effect in term of less time of patient admission (hardly 30 mins) with less side effects with greater clinical effects in our study.
Use of Artificial Neural Network and Theoretical Modeling to Predict the Effective Elastic Modulus of Composites with Ellipsoidal Inclusions  [PDF]
Anupama Upadhyay, Ramvir Singh
Open Access Library Journal (OALib Journal) , 2014, DOI: 10.4236/oalib.1100903
In this paper, a possible applicability of artificial neural networks to predict the elastic modulus of composites with ellipsoidal inclusions is investigated. Besides it, based on the general micromechanical unit cell approach, theoretical formula is also developed, for effective elastic modulus of composites containing randomly dispersed ellipsoidal in homogeneities. Developed theoretical model considers the ellipsoidal particles to be arranged in a three-dimensional cubic array. The arrangement has been divided into unit cells, each of which contains an ellipsoid. Practically in real composite systems neither isostress is there, nor isostrain, and besides it due to the effect of random packing of the phases, non-uniform shape of the particles, we are forced to include an empirical correction factor. We are forced to include an empirical correction factor in place of volume fraction which provided a modified expression for effective elastic modulus. Empirical correction factor is correlated in terms of the ratio of elastic moduli and the volume fractions of the constituents. Numerical simulations has also been done using artificial neural network and compared with the results of Halpin-Tsai and Mori-Tanaka models as well as with experimental results as cited in the literature. Calculation has been done for the samples of Glass fiber/nylon 6 composite (MMW nylon 6/glass fiber), Organically modified montmorillonite (MMT)/High molecular weight (HMW) nylon 6 nanocomposite ((HE)2M1R1-HMW nylon 6), Epoxy-alumina composites and MXD6- clay nanocomposite. It is found that both the theoretical predictions by the proposed model and ANN results are in close agreement with the experimental results.
Public health care in Afghanistan: An investigation in suboptimal utilization of facilities  [PDF]
Lakhwinder P. Singh, Anupama Sharma, Manish Kumar, Sidiq Shinwari
Health (Health) , 2012, DOI: 10.4236/health.2012.410123
Abstract: Afghanistan has made strides in increasing access to health care services since 2001 however it is still battling with poor utilization of services. In order to enhance demand for services a study was conducted to explore answers to the questions on knowledge, attitude and practices of communities in relation to healthcare services. The study design was cross-sectional qualitative spanning in six provinces representing geographical and ethno cultural regions of the country. In each of the six provinces, two districts were selected through mixed sampling technique representing urban-rural population. A total of 48 villages were selected in twelve districts. The study was conducted from September 2009 to March 2010. The study highlights poor heath seeking behavior associated with physical accessibility including high cost of transportation, socio-cultural barriers for women, awareness and trust for public health facilities. The system based issues adds to prevailing access related barriers such as privacy, efficiency and availability within health facilities; lack of female physicians and, aspects of behavior and attitude, and governance issues.
Response of Glycine max in relation to nitrogen fixation as influenced by fungicide seed treatment
Anupama Bikrol, Nidhi Saxena, Kiran Singh
African Journal of Biotechnology , 2005,
Abstract: Glycine max – Rhizobium interaction is a well known symbiotic association occurring in nature and responsible for biological nitrogen fixation. Thiram a well-known fungicide has been in practice as seed dressing in order to prevent fungal colonization. In the present study the effect of various thiram concentrations is investigated. Thiram concentration beyond 500 μg/ml was observed to be highly toxic with respect to plant growth factors and rhizobial infection to the G. max. The nodulation, nodule dry weight, nitrogenase activity were observed to be maximum at 100 μg/ml of thiram. The study is useful in determining the threshold concentration of fungicide for soybean seed dressing for effective nitrogen fixation and crop yield. African Journal of Biotechnology Vol. 4 (7), pp. 667-671, 2005
Journal of Engineering Science and Technology , 2009,
Abstract: Fluidized bed drying of mushroom was undertaken to study the drying characteristics and quality of the dried mushrooms. Drying was done at drying air temperatures of 50, 70, and 90oC and air velocities of 1.71 and 2.13 m/s. Two batch sizes, namely, 0.5 kg and 1 kg of sliced milky mushrooms were dried. Drying characteristics and the quality of dried mushrooms were analyzed. The results indicated that the drying time decreased only marginally with increase in air velocity. Drying air temperature of 50oC was better as it resulted in a dried product having better rehydration characteristics, lesser shrinkage and lighter color. Highest energy efficiency (79.74%) was observed while drying a batch size of 1 kg at a drying air temperature of 50oC, using an air velocity of 1.7 m/s.
Anupama Chaudhary* AK Sharma and Birbal Singh
International Journal of Bioassays , 2013,
Abstract: Molasses based distilleries are recognized as of major polluting industries with a large amount of annual effluent production. Modi Distillery, located at Modi Nagar in western Uttar Pradesh, is a molasses-based distillery with a capacity of 26 KLPD. Being an alcohol-processing unit, we estimated capacity and efficiency of Modi distillery that discharges highly polluted effluent to small drainage with a very high biological oxygen demand (BOD) (42,000-51,000mg/ltr) and chemical oxygen demand (COD) (85,000-1,00,000mg/ltr) levels. Analysis of physio-chemical properties of distillery effluent showed higher temperature and proportion of dissolved organic and inorganic compounds. Presence of oxidized dissolved solids and acids lowered pH of effluent and increased toxicity. We measured quality of effluent as per standard recommendations. Investigation of water consumption in different processes of distillery and detailed evaluation of characteristics of effluent generated from above processes was analyzed. Towards management of polluted byproduct, we treated distillery effluent with bacterial consortium of Pseudomonas grimonti, Bacillus sp. MH-I6 and Staphylococcus sp. CSA strain. Treated effluent showed a significant decrease in BOD (76%) and COD (62%) levels. Present study represented an account of physio-chemical characteristics of discharges effluent from sugarcane molasses-based Modi distillery and its biological treatment towards optimization of effective management of distillery byproduct.
Anticonvulsant effect of the ethanol extract of Caesalpiniapulcherrima (L.) Sw., Fabaceae, leaves
Kumar, Dinesh;Singh, Jitender;Baghotia, Anupama;Kumar, Sunil;
Revista Brasileira de Farmacognosia , 2010, DOI: 10.1590/S0102-695X2010005000014
Abstract: in this study, ethanol extract of caesalpinia pulcherrima (l.) sw., fabaceae, leaves (cpee) was investigated for anticonvulsant effect against maximal electroshock (mes) and pentylenetetrazole (ptz) induced seizures in rats and mice at dose levels 200 and 400 mg/kg, i.p. respectively. diazepam (3 mg/kg, i.p.) was used as a standard anticonvulsant drug for comparison. cpee was found to be safe up to the dose of 4000 mg/kg in mice, when administered intraperitoneally. the extract at 400 mg/kg dose produced significant (p<0.01) anticonvulsant effect w.r.t. control against ptz-induced clonic seizures. in mes-induced seizure model, there were no significant alterations in the onset as well as duration of hind limb extension seizures as compared to control at a dose of 200 mg/kg when administered intraperitoneally. however, the extract (cpee, 400 mg/kg i.p.) significantly (p<0.01) delayed the onset as well as decreased the duration of hind limb extension seizures (hles) as compared to control. however, the extract, cpee, percentage protection of the animals was increased at higher dose (200 mg/kg) in both the models. the results of the study suggest that ethanol extract of caesalpinia pulcherrima (l.) sw. leaves possess anticonvulsant effect.
Cutaneous tuberculosis of gluteal region presenting as a sinus and large cyst: An unusual entity
Gupta Anupama,Gupta Sunita,Singal Rikki,Singh Prem
Journal of Cutaneous and Aesthetic Surgery , 2011,
The Variations in Calcaneal Articular Facets In North Indian Population and its Clinical Implication
Seema,Maninder Singh,Anupama Mahajan,Deepinder Kaur Gandhi
Global Journal of Medicine and Public Health , 2012,
Abstract: Aims and Objectives- To know the most common type of calcanei in North Indian population and itsclinical importance. There are three articular facets on superior surface of calcaneus- anterior, middle andposterior. Three types of calcanei are noted according to number and arrangement of the articular facets-type A, B and C. Methodology - The present studywas done on 300 dry adult human calcanei of unknownsex taken from Department of Anatomy Sri Guru Ram Das Institute of Medical Sciences and ResearchVallah (Amritsar). Results- In our study Type B was found as the most common type. Type A is the nextmost common. Interpretation- The talocalcaneal joint is important in arthritis and coalition, flat foot, valgus deformity, congenital anomalies and intra articular fractures.
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