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Search Results: 1 - 10 of 14331 matches for " Smita Singh "
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Genetic Variability and Direct Selection Criterion for Seed Yield in Segregating Generations of Barley (Hordeum vulgare L.)  [PDF]
Sunil K. Yadav, Ashok K. Singh, Praveen Pandey, Smita Singh
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.69153
Abstract: The aim of this study was to determine nature and extent of variability parameters and their utilization in barley breeding programme. A total of 45 F1s along with their parents and F2 populations were evaluated in a randomized block design with 3 replications during Rabi (winter season) 2014. The various traits measured were days to 50% flowering, days to maturity, plant height, flag leaf area, upper leaf area, tillers-plant, spikes-plant, spike length, grains-spike, spike weight, grain weight-spike, spike harvest index, 1000 grain weight, biological yield-plant, grain yield-plant (g), harvest index, grain size, husk content and protein content. Results showed that significant variation was observed for all the traits studied in the entire gene pool. The degree of genotypic and phenotypic coefficient of variation was high for tillers-plant, spike-plant, grain yield-plant, flag leaf area, harvest index, 1000 grain weight, grain weight-spike, upper leaf area and husk content. High heritability coupled with high genetic advance was recorded for tillers-plant, spikes-plant, grain yield-plant, flag leaf area, harvest index, grain weight-spike, upper leaf area, husk content, grain size and plant height suggesting that these traits are highly heritable and governed by additive gene action. Moderate heritability coupled with high genetic advance was observed for 1000 grain weight, biological yield-plant, spike length, protein content, grains-spike and spike weight; however, days to 50% flowering and days to maturity had moderate heritability coupled with low genetic advance suggesting preponderance on non-additive gene action in the inheritance of these traits. It could be concluded that
Smita Singh* and Debojyoti Das
International Journal of Pharmaceutical Sciences and Research , 2013,
Abstract: Objective: Dental caries is a common oral infection prevalent in developing countries. Streptococcus mutans, a commensal bacterium of the oral cavity, plays a major role in the etiology of caries and root canal infection. Sodium hypochlorite and Chlorhexidine are used in the prevention of caries and as root canal medicament though they cannot be used in combination. Study Design: Different concentrations of passion fruit pulp extract were evaluated to measure the most effective way against Streptococcus mutans. For this bacterial inhibition zones were measured for each concentration in millimeter and compared. Results: The most effective concentration of passion fruit pulp extract was 40% to 45% against Streptococcus mutans. Conclusion: The present study aimed to evaluate alternative, inexpensive, good in taste, simple and effective method for sanitization of tooth cavity as well as root canal system. The antimicrobial efficacy of passion fruit pulp extract as irrigant and cavity disinfectant is evaluated and compared with the standard irrigant sodium hypochlorite.
Evaluating the buffering capacity of various soft drinks, fruit juices and tea
Singh Smita,Jindal Rahul
Journal of Conservative Dentistry , 2010,
Abstract: Aims and Objective : The purpose of this study is to measure the initial pH of various commonly used beverages and to determine their ability to maintain a low pH by measuring their buffering capacities. Materials and Methods : Twelve commercially available drinks were taken and divided into four groups (preserved fruit juices, tea, mineral water and carbonated drinks. Each group comprised of three drinks. Their initial pH were measured with pH meter and their buffering capacities were measured by adding 1M NaOH in the increments of 0.2 ml into 100 ml of each drink till the pH raised to 5.5 and 7 respectively. Statistical Analysis : The volume of NaOH required to raise the pH to 5.5 and 7 were recorded in all the groups. This data was subjected to statistical analysis using Mann- Whitney tests. Results : Total titratable acidity measurement shows that among all the drinks, there was no significant difference between carbonated drinks and preserved fruit juices while a significant difference was present between carbonated drinks, preserved fruit juices and tea. Conclusion : In this in vitro study, it was found that packaged apple juice had the most buffering capacity with maximum erosive potential whereas green tea had the least.
Comparative evaluation of surface characteristics of dentinal walls with and without using plastic finishing file
Singh Smita,Nigam Neeraj
Journal of Conservative Dentistry , 2010,
Abstract: Aim: The aim of this in vitro research is to evaluate the debris present on the dentinal walls after instrumentation in mesiobuccal root of maxillary molar with Hand Protapers, Hand Profiles, Hand Hero Shapers, and finishing the dentinal walls with and without rotary plastic files using stereomicroscope. Materials and Methods: Sixty freshly extracted human maxillary first molar teeth were divided into two groups of 30 teeth each (group A and B). Both the groups were divided into three subgroups of 10 teeth each (group A had subgroups A1, A2, and A3) and (group B had subgroups B1, B2 and B3). In group A, all the 30 canals were subjected to cleaning and shaping with three different instruments system and kept unfinished. This group was named as unfinished group. In group B, all the 30 canals were subjected to cleaning and shaping with three different instruments system followed by finishing with plastic files. This group was named as finished group. The crown of each tooth was sectioned at the cementoenamel junction. Canals were prepared following conventional principles of crown down technique. After splitting the roots longitudinally, the dentinal debris of each root canal was evaluated in three areas (coronal, middle and apical thirds of the root) by means of numerical evaluation scale, using a stereomicroscope. Results: Stereomicroscopic evaluations showed that there was no significant difference in the debris scores between the subgroups when the canals were instrumented with hand Protaper, hand Profile and hand Hero Shaper in all the thirds. There was no significant difference in scores between the unfinished group and the finished group in the coronal third but significant differences were seen in middle third and apical third. Conclusions: After instrumentation with different hand instruments, the use of plastic finishing files showed cleaner canal walls.
Trigonometric Approximation of Signals (Functions) Belonging to Class by Matrix Operator
Uaday Singh,M. L. Mittal,Smita Sonker
International Journal of Mathematics and Mathematical Sciences , 2012, DOI: 10.1155/2012/964101
Abstract: Various investigators such as Khan (1974), Chandra (2002), and Liendler (2005) have determined the degree of approximation of 2π-periodic signals (functions) belonging to Lip(,) class of functions through trigonometric Fourier approximation using different summability matrices with monotone rows. Recently, Mittal et al. (2007 and 2011) have obtained the degree of approximation of signals belonging to Lip(,)- class by general summability matrix, which generalize some of the results of Chandra (2002) and results of Leindler (2005), respectively. In this paper, we determine the degree of approximation of functions belonging to Lip α and (, ()) classes by using Cesáro-Nörlund (1?) summability without monotonicity condition on {}, which in turn generalizes the results of Lal (2009). We also note some errors appearing in the paper of Lal (2009) and rectify them in the light of observations of Rhoades et al. (2011).
Critical appraisal of FNAC in the diagnosis of primary papillary carcinoma arising in thyroglossal cyst: A case report with review of the literature on FNAC and its diagnostic pitfalls
Agarwal Kiran,Puri Vandana,Singh Smita
Journal of Cytology , 2010,
Abstract: The incidence of primary papillary carcinoma arising in thyroglossal cyst is rare and occurs in <1% of thyroglossal cysts. Even rarer is its diagnosis by pre-operative fine needle aspiration cytology (FNAC). Only 15 such cases diagnosed by FNAC have been previously reported in the literature. In this article, cytomorphology of the current case is presented along with a review of the literature on FNAC and its diagnostic pitfalls.
Comparative Study of Different Routing Protocols in MANET Based on Simulation Using Ns-2
Smita Singh,S.R.Biradar
International Journal of Electronics and Computer Science Engineering , 2012,
Abstract: A mobile ad hoc network is a collection of autonomous mobile nodes that communicate with each other over wireless links. Such networks are expected to play increasingly important role in future civilian and military settings, being useful for providing communication support where no fixed infrastructure exists or the deployment of a fixed infrastructure is not economically profitable and movement of communicating parties is possible. However, since there is no stationary infrastructure such as base stations, mobile hosts need to operate as routers in order to maintain the information about the network connectivity. Therefore, in recent years, a variety of routing protocols have been proposed and several of these have been already extensively simulated or implemented as well. This paper evaluates performance of two routing protocols, Ad hoc On-demand Multi-path Distance Vector (AOMDV) and Optimized Link State Routing (OLSR) routing protocols. We perform the analysis on two different performance metrics Average delay and Packet Delivery Ratio using Load Model and Flow Model. Simulation is carried out using Ns-2.34.
Efficacy of Bronchial Brush Cytology and Bronchial Washings in Diagnosis of Non Neoplastic and Neoplastic Bronchopulmonary Lesions
Türk Patoloji Dergisi , 2012,
Abstract: Objective: The present study is based on the cytologic evaluation of bronchial brushings for the diagnosis of non neoplastic and neoplastic bronchopulmonary lesions and relation of the cytologic findings with clinical diagnosis and histopathologic examination wherever possible.Material and Method: 35 symptomatic patients were selected on whom bronchoscopy was done. Bronchial brushing was performed using straight brushes and bronchial washing specimens were collected after brushing samples. Smears were stained by Pap, H&E, and Giemsa in all the cases while PAS and Ziehl Neelsen stainings were done in selected cases. Endobronchial biopsy was performed using a flexible long biopsy forceps.Results: The age of the patients varied from 18 to 88 years, and the male:female ratio was 3.3:1. Carcinoma was diagnosed in 21 (60%) out of total 35 cases on bronchial biopsy and the remaining 14 cases (40%) showed inflammatory, tuberculous or no significant pathology. Bronchial washing showed 10 true positive, 10 true negative, 4 false positive and 11 false negative cases whereas bronchial brushing showed 17 true positive, 12 true negative, 2 false positive and 4 false negative cases as confirmed on biopsy. Bronchial brushing showed good sensitivity (80.9%) and specificity (85.7%) compared to bronchial washing which had sensitivity of 47.6% and specificity of 71.4%.Conclusion: These findings attempted to confirm the concept that pulmonary cytology has improved to the point that its sensitivity is high enough to justify its use as a definitive diagnostic tool in those cases in which tissue diagnosis is not possible.
Primary renal fibrosarcoma: A rare case report and review of literature
Agarwal Kiran,Singh Smita,Pathania O
Indian Journal of Pathology and Microbiology , 2008,
Abstract: Primary renal fibrosarcoma is a rare tumor. We describe a case of primary renal fibrosarcoma in a 54-year-old male who presented with abdominal lump and intermittent hematuria.
Solving Flow-shop Sequencing Problem using Scheduling Algorithm based on Search and Prune Technique
Smita Verma,Megha Jain,Ranjana Singh
International Journal of Scientific Engineering and Technology , 2012,
Abstract: In sequencing problems, there are one or more jobs to be done and one or more machines are available for this purpose. If at least one machine center includes more than one machine, the scheduling problem becomes a flexible flow-shop problem. Flexible flow shops are thus generalization of simple flow shops. In this paper, we are solving flexible flow shop sequencing problem of two machine centers, using an algorithm. The proposed algorithm will be suitable for a medium-sized number of jobs; it is an optimal algorithm, entirely using the search-and-prune technique
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