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Acrochordon, diabetes and associations
Bhargava Puneet,Mathur Sandeep,Mathur Deepak,Malpani Satish
Indian Journal of Dermatology, Venereology and Leprology , 1996,
Abstract: A study of clinical profile of acrochordons was carried out in 100 patients. Their association with diabetes mellitus and other disorders was studied. Acrochordons were found to be closely associated with pseudo-acanthosis nigricans, seborrhoeic keratosis, obesity and non-insulin dependent diabetes mellitus.
Application of high performance liquid chromatography to the determination and validation of levodopa in methanolic extract of Mucuna utilis
Singh Raman,Saini Pawan,Mathur Satish,Singh Gyanendra
International Journal of Green Pharmacy , 2010,
Abstract: A sensitive, precise and accurate high-performance liquid chromatographic (HPLC) method has been developed for the analysis of levodopa in methanolic extract of Mucuna utilis. The method utilises sample preparation step followed by separation on a Eurosphere C18, 250 Χ 4.0 mm, 5 m particle size column, using methanol and 0.5% v/v acetic acid in the ratio of 70:30 v/v as the mobile phase. Analysis of levodopa was carried out in the absorbance mode at 284 nm. The method was validated in terms of linearity, precision (inter and intra day), accuracy, Limit of Detection (LOD) and Limit of Quantitation (LOQ). The proposed HPLC method was found to be precise, specific, accurate and can be used for the identification and quantitative determination of levodopa in herbal extracts.
Determination of bacoside A by HPTLC in Bacopa monnieri extract
Prakash Om,Singh Gyanendra,Singh Raman,Mathur Satish
International Journal of Green Pharmacy , 2008,
Abstract: A simple sensitive HPTLC method developed for the determination of bacoside A in the plant Bacopa monnieri extracts. The stationary phase was precoated silica gel GF254. The mobile phase used was dichloromethane: methanol: water (4.5: 1.0: 0.1 v/v/v). The plate was scanned and quantified at 225 nm for bacoside A. The method was validated in terms of linearity, accuracy and specificity. The proposed HPTLC method provides a faster and cost effective qualitative control for routine analysis of bacoside A in extracts containing Bacopa monnieri saponins.
Bilateral Congenital Diaphragmatic Hernia
Anjan K Dhua,Satish K Aggarwal,NB Mathur,GR Sethi
APSP Journal of Case Reports , 2012,
Abstract: Bilateral congenital diaphragmatic hernia (CDH) is a rare birth defect, with a poor prognosis. We describe a case of bilateral CDH discovered while repairing the right sided CDH. Diaphragmatic defect was repaired and a silo was applied on the abdominal wound to avoid abdominal compartment syndrome. The patient however died postoperatively due to severe pulmonary hypertension.
Synthesis and characterization of carbon nanotubes over iron carbide nanoparticles coated Al powder using thermal chemical vapor deposition
S. K. Singhal,R. K. Seth,Rashmi,Satish Teotia,Mamta,Rajeev Chahal,R. B. Mathur
Applied Nanoscience , 2013, DOI: 10.1007/s13204-012-0066-z
Abstract: A simple method is described to synthesize carbon nanotubes (CNTs) by the thermal decomposition of toluene at 750°C over a thin catalyst film deposited on Al powder. This method allows the bulk metal surface to act as both the catalyst and support for CNT growth. The catalyst film on Al was prepared from an ethanol solution of iron nitrate. Under the growth conditions, iron nitrate formed an amorphous iron oxide layer that transform into crystalline Fe2O3, which was further reduced to Fe3O4 and Fe3C. It is believed that the growth of CNTs took place on iron carbide nanoparticles that were formed from FeO. The characterization of CNTs was mainly carried out by powder X-ray diffraction and scanning electron microscopy, X-ray fluorescence and thermogravimatric analysis. The CNTs were found to be highly dispersed in Al powder. This composite powder could be further used for the fabrication of Al matrix composites using powder metallurgy process in which the powder were first cold pressed at 500–550 MPa followed by sintering at 620°C for 2 h under a vacuum of 10 2 torr. The mechanical properties of the sintered composites were measured using a microhardness tester and a Universal testing Instron machine.
PHYTOCHEMICAL INVESTIGATION AND IN VITRO ANTIOXIDANT ACTIVITY OF SOME MEDICINALY IMPORTANT PLANTS OF UTTARAKHAND
Dua Virender Kumar,Mathur Abhishek,Verma Satish Kumar,Singh Santosh Kumar
International Research Journal of Pharmacy , 2011,
Abstract: Antioxidants are the substances, compounds or nutrients in our foods which can prevent or slow oxidative damage to our bodies. These agents are able to remove the deleterious effects of free radicals within our body. Solvent extraction methods are widely used for extracting antioxidant in foods and other sources. In this study, Microwave Solvent Extraction (MSE) methods were utilized to determine the content of antioxidants in Riccinus communis (root), Aloe vera (leaves), Crateva nurvula (bark), Swertia chirayta (whole plant) and Bacopa monnieri (whole plant) extracts. MSE was performed at 80oC employing four solvents, methanol, aqueous, hexane and petroleum ether. The in vitro antioxidant activity was determined by DPPH (2, 2-Diphenyl-1-picrylhydrazyl) assay and Superoxide Anion Radical Scavenging activity. The yield of antioxidants extracted using the MSE was achieved using methanol as the solvent, followed by aqueous extracts in all the plants in comparison to Riccinus communis. Antioxidant activities in hexane and petroleum ether extracts of Riccinus communis were efficient in comparison to that of methanol and aqueous extracts of other plants. The antioxidant capacities were found to be correlated with the Total Phenolic Content (TPC). The phytochemical active constituents in the potent extracts were determined by conventional methods. These studies thus lead to the isolation and characterization of some active components responsible for antioxidant activity.
Live Video Services Using Fast Broadcasting Scheme  [PDF]
Satish Chand
Communications and Network (CN) , 2010, DOI: 10.4236/cn.2010.21013
Abstract: The Fast Broadcasting scheme is one of the simplest schemes that provide video services. In this scheme, the video is divided into equal-sized segments depending upon the bandwidth allocated by the video server. If the video length is not known, then this scheme cannot be applied as the number of video segments cannot be determined. In a live video wherein the video size is unknown, especially the ending time of the live broadcast, e.g., cricket match, this scheme cannot be applied. In this paper, we propose a model that helps the Fast Broadcasting scheme to support live video broadcasting. The basic architecture of the system consists of a live system with one video channel that broadcasts the live video and a video server that broadcasts the already broadcast live video to users.
Health expenditures and personal bankruptcies  [PDF]
Aparna Mathur
Health (Health) , 2012, DOI: 10.4236/health.2012.412192
Abstract: Using household-level data from the Panel Study of Income Dynamics, we estimate the extent to which medical expenses are responsible for driving households to bankruptcy. Our results suggest that an increase of 10 percent in medical debts would cause a 27 percent increase in the filing propensity of households with primarily medical debt, and an approximately 36 percent increase in filing propensity of households where medical debts co-exist with primarily credit card debts. Studying the post-bankruptcy scenario, we find that filers are 19 percent less likely to own a home even several years after the filing, compared to non-filers. However, the consequences are less adverse for medical filers i.e. those who filed due to high medical bills compared to other filers.
Adaptability of Conservative Staircase Scheme for Live Videos  [PDF]
Sudeep Kanav, Satish Chand
Circuits and Systems (CS) , 2011, DOI: 10.4236/cs.2011.23023
Abstract: Existing broadcasting schemes provide services for the stored videos. The basic approach in these schemes is to divide the video into segments and organize them over the channels for proper transmission. Some schemes use segments as a basic unit, whereas the others require segments to be further divided into subsegments. In a scheme, the number of segments/subsegments depends upon the bandwidth allocated to the video by the video server. For constructing segments, the video length should be known. If it is unknown, then the segments cannot be constructed and hence the scheme cannot be applied to provide the video services. This is an important issue especially in live broadcasting applications wherein the ending time of the video is unknown, for example, cricket match. In this paper, we propose a mechanism for the conservative staircase scheme so that it can support live video broadcasting.
Issues and Challenges in Node Connectivity in Mobile Ad Hoc Networks: A Holistic Review  [PDF]
Mohit Jain, Satish Chand
Wireless Engineering and Technology (WET) , 2016, DOI: 10.4236/wet.2016.71003
Abstract: One of the fundamental properties of an ad hoc network is its connectivity. Maintaining connectivity in wireless networks is extremely difficult due to dynamic changing topology of MANETs. There are several techniques to understand the connectivity level for a given network topology. In this paper, we examine the existing methods and discuss the issues and challenges that are still insurmountable in order to enhance the connectivity properties of wireless multi hop networks.
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