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Search Results: 1 - 10 of 190248 matches for " G. Shrivastava "
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Electron Beam Effects on Kinetic Alfven Waves in the Plasma Sheet Boundary Layer  [PDF]
G. Shrivastava, J. Shrivastava
Open Access Library Journal (OALib Journal) , 2014, DOI: 10.4236/oalib.1100518
Abstract: This work studies the effect of earthward electron beam on kinetic Alfven wave in plasma sheet boundary layer (PSBL). The particle aspect approach is adopted to investigate the trajectories of charged particles in the electromagnetic field of kinetic Alfven wave. Expressions are found for the dispersion relation, growth/damping-rate and associated currents in the presence of electron beam in homogenous plasma. Kinetic effects of electrons and ions are included to study kinetic Alfven wave because both are important in the transition region. The plasma parameters appropriate to plasma sheet boundary layer are used. It is found that downward electron beam affects the dispersion relation, growth/damping-rate and associated currents in both cases (warm and cold electron limit).
Studies on Influence of Emitter Discharge Rate, Irrigation Supplies and Planting Pattern on Tomato in Heavy Soils Of Central India
P. Shrivastava , G. S. Rajput , A. Pandey
Cercetari Agronomice in Moldova , 2012, DOI: 10.2478/v10298-012-0004-y
Abstract: Field experiments were conducted during two post rainy seasons at J.N. Krishi Vishwa Vidyalaya, Jabalpur, India, to evaluate the effect of emitter discharge rate, drip irrigation supplies and planting pattern on soil moisture distribution patterns and yield of tomato in heavy soils. In the experiments during 1998, irrigation was applied through emitters (2, 4 lhr-1) and micro-tubes (6 lhr-1) to conventional and paired-row plantings of tomato (var. ACC - 99). While, in the experiments during 2000, four irrigation supply levels (0.6, 0.8, 1.0, 1.2 times crop evapo-transpiration) combined with paired-row, four-row plantings of tomato (var. Pusa ruby) were applied. Observations revealed that fulfillment of 100 per cent of tomato crop evapo-transpiration need utilizing micro-irrigation (micro-tubes of rated discharge - 6 lhr-1) combined with four-row plantings of tomato achieved a cost saving of 35.21 per cent on initial investment with significant gain in yield over paired-row planting in the heavy soils of central India.
Multi objective optimization of time cost quality quantity using multi colony ant algorithm
R. Shrivastava,S. Singh,G. C. Dubey
International Journal of Contemporary Mathematical Sciences , 2012,
Beam Dynamics and Electromagnetic Design Studies of 3 MeV RFQ for SNS Programme  [PDF]
Rahul Gaur, Purushottam Shrivastava
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.29068
Abstract: The physics design of a 3 MeV, 30 mA, 352.2 MHz Radio Frequency Quadrupole (RFQ) is done for the future Indian Spallation Neutron Source (ISNS) project at RRCAT, India. The beam dynamics design of RFQ and the error analysis of the input beam parameters are done by using standard beam dynamics code PARMTEQM. The electromagnetic stu-dies for the two-dimensional and three-dimensional cavity design are performed using computer codes SUPERFISH and CST Microwave Studio. The physics design of RFQ consisting of the beam dynamics design near the beam axis and the electromagnetic design for the RFQ resonator is described here.
Assessment of bone condition by acoustic emission technique: A review  [PDF]
Sharad Shrivastava, Ravi Prakash
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.23025
Abstract: The paper deals with the review of acoustic emission technique in biomedical field. The re-view is done with the aim to provide an overview of the use of AE technique in biomedical field, mainly concentrated on the AE behavior of bone under different loading conditions, its depend-ence on strain rate, in osteoporosis, monitoring the fracture healing process of bone. The over-all conclusion from the review was that almost all the studies in bone indicated that the initial AE occurs only in the plastic region and just prior to yield. That means the use of AE tech-nique for clinical application cannot be consid-ered as a safe technique, but the early occur-rence of AE events from callus promises the application of AE technique for monitoring the fracture healing process. The negligible effect of soft tissues on AE response of bone prom-ises AE to become a non-invasive method for assessment of bone condition.
Experience with 40 cases of congenital pouch colon
Ghritlaharey R,Budhwani K,Shrivastava D,Gupta G
Journal of Indian Association of Pediatric Surgeons , 2007,
Abstract: Aim : The aim of this study was to analyze the clinical and management aspect of congenital pouch colon. Materials and Methods : This retrospective study was carried out on 40 cases of congenital pouch colon managed in the department of paediatric surgery from 01, January 2000 to 31, December 2005. Results : The incidence of congenital pouch colon (CPC) in the present study was 11.290 % (40 of 354) of all anorectal malformations (ARM) and 19.60% (40 of 204) of high ARM. Of these 40 cases of CPC included in the study, 82.5% were male and 17.5% were female. The average age of presentation to hospital was 3.36 days with a range of 1-11 days; of these 25% patients were admitted with poor general condition. Preoperative diagnosis of CPC was possible in 75% of cases in our study. 60% ( n =24) of cases had incomplete pouch colon (Type III and IV) while 40% ( n =16) had complete pouch colon (Type I and II). Right transverse colostomy was done in 16 patients and colostomy at descending colon just proximal to pouch in two patients for incomplete (Type III and IV) CPC as a primary initial procedure. Ileostomy was done in 14 patients and window colostomy in three patients for complete (Type I and II) CPC. As definitive procedures, pouch excision and abdomino-perineal pull-through of colon was done in 17 patients, coloplasty and abdomino-perineal pull-through of coloplasty colon was done in four patients and pouch excision and abdomino-perineal pull-through of terminal ileum in four patients in our series. None of our patients underwent primary single stage procedure. Conclusion: (1) CPC comprises 11.290 % of all ARM and 19.60% of high ARM. (2) Right transverse colostomy was opted for incomplete pouch colon, while Ileostomy and window colostomy were opted for complete pouch colon as initial surgical procedures. (3) Staged surgical procedures for management of CPC were well tolerated in our series.
Shrivastava Bhanu,Shrivastava Vandana,Shrivastava Archana
International Research Journal of Pharmacy , 2011,
Abstract: A species of parasite protozoa Entamoeba histolytica causing amoebiasis and amoebic dysentery characteristic include a single nucleus containing a small central karyosome and peripheral chromatin that is finely and regularly beaded. This is a single celled parasitic animal, that infects predominantly humans and other primates. Amoebic infection was first described by Fedor Losch in 1875 in St. Petersburg. In 1890, Sir William Osler reported the first North American case of amoebiasis when he observed amoebae in stool in abscess fluid from physician who previously resided in Panama. So we used the Lemon juice (Citrus ) at different concentration against Entamoeba histolytica to treat the amoebiasis disease. Entamoeba histolytica shows the variety of growth due to the effect of Lemon juice (Citrus). Lemon juice is ingredient and it has antiamoebic properties against Entamoeba histolytica a causative agent of amoebiasis.
Shrivastava Bhanu,Shrivastava Vandana,Shrivastava Archana
International Research Journal of Pharmacy , 2011,
Abstract: Typhoid fever is a prolonged and debilitating fever which is of major public health concern in many countries.Laboratory diagnosis of typhoid fever requires isolation and identification of Salmonella enterica serotype Typhi. In many areas where this disease is endemssssic, laboratory capability is limited. Recent advances in molecular immunology have led to the identification of sensitive and specific markers for typhoid fever and technology to manufacture practical and inexpensive kits for their rapid detection. Three commercial kits for serologic diagnosis of typhoid fever. Patients presenting with 4 days of fever were enrolled at two hospitals. Patients with serotype Typhi isolated from blood samples, and controls were patients with other laboratory-confirmed illnesses. This paper described following methods for diagnosis in case of typhoid fever, Laboratory analysis. (i) Blood culture (ii) Confirmation and antimicrobial susceptibility testing of isolates (iii) Investigation of stool culture (iv) Widal test. (v) Rapid tests (vi) A polymerase chain reaction (PCR)-based test.
A Study Of Achievement In English Of Boys & Girls Of Government & Non-government School At Middle Level
Pallavi Shrivastava
Golden Research Thoughts , 2013, DOI: 10.9780/22315063
Abstract: "Language in its widest sense means the sum total of such signs of our thoughts and feeling as are capableof external perception as could be produce and repeated at will."A.H. Gardiner.
Plant Tissue Culture : An Overview
Shrivastava S.
Pharmaceutical Reviews , 2007,
Abstract: Plant tissue culture, the growth of plant cells outside an intact plant, is a technique essential in many areas of the plant sciences. It relies on maintaining plant cells in aseptic conditions on a suitable nutrient medium. The culture can be sustained as a mass of undifferentiated cells for an extended period of time or regenerated into whole plants.Because plant cell culture is not affected by changes in environmental conditions, improved production may be available in any place or season. Therefore, studies on the production of useful metabolite by plant cell culture have been carried out on an increasing scale since the end of the 1950's. Their results stimulated more recent studies on the industrial application of this technology in many countries. However, there are still a few barriers that must be overcome before commercialization of many other products can occur. To overcome barriers hindering industrial application of plant cell cultures, however, it is required to conduct more fundamental research, including elucidation of biosynthetic pathways of many useful secondary metabolites in plants and mechanisms for their biosynthesis, collaboration with a number of researchers in other scientific fields is also very helpful. In this review, the background of research on plant cell culture, various approaches to improve the productivity of secondary metabolites and different techniques are discussed.
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