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Search Results: 1 - 10 of 5942 matches for " Rao Mummidi Venkateswara "
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Hyperkeratotic Verrucous Porokeratosis
Rao Mummidi Venkateswara,Singh Ajit,Thappa Devinder Mohan,Ratnakar Chaganti
Indian Journal of Dermatology , 1998,
Abstract: A 40 year old male having porokeratosis of mibelli with its rare variant, hyperkeratotic verrucous porokeratosis, is reported here.
Morbidly obese parturient: Challenges for the anaesthesiologist, including managing the difficult airway in obstetrics. What is new?
Rao Durga,Rao Venkateswara
Indian Journal of Anaesthesia , 2010,
Abstract: The purpose of this article is to review the fundamental aspects of obesity, pregnancy and a combination of both. The scientific aim is to understand the physiological changes, pathological clinical presentations and application of technical skills and pharmacological knowledge on this unique clinical condition. The goal of this presentation is to define the difficult airway, highlight the main reasons for difficult or failed intubation and propose a practical approach to management Throughout the review, an important component is the necessity for team work between the anaesthesiologist and the obstetrician. Certain protocols are recommended to meet the anaesthetic challenges and finally concluding with "what is new?" in obstetric anaesthesia.
Preparation and Characterization of Nano-Sized (Mg(x)Fe(1–x)O/SiO2) (x = 0.1) Core-Shell Nanoparticles by Chemical Precipitation Method  [PDF]
Mohsen Ahmadipour, Mozhgan Hatami, Kalagadda Venkateswara Rao
Advances in Nanoparticles (ANP) , 2012, DOI: 10.4236/anp.2012.13006
Abstract: Magnetic core-shell nanoparticles have been widely studied because of their excellent and convenient magnetic and electrical properties.In this present work core-shell magneticnanoparticles (MNPs) were synthesized by simple chemical precipitation method. Firstly Mg(x)Fe(1–x)O (magnesiwuestite) nano powder samples were synthesised by low temperature chemical combustion method. Secondly the as synthesised Mg(x)Fe(1–x)O nanoparticles are used to synthesis magnetic core-shell Nano particles byusing 2-propanol, poly ethylene glycol (PEG), ammonia solution 30 wt%, tetraethyl orthosilicate (TEOS). Separation of the core-shell magnetic nanoparticles from the aqueous suspension using a centrifuge. The synthesised MNPs and core shell MNP were characterized by X-ray diffraction (XRD), Thermal gravimetric-differential thermal analyzer (TG-DTA), Transmission electron microscopy (TEM), scanning electron microscopy (SEM), (EDAX) for structural, thermal and morphological respectively. It is observed that the particle size of spherical sampleis 32.5 nm.
Method Development and Validation for Simultaneous Estimation of Montelukast Sodium and Desloratadine by RP-HPLC  [PDF]
Bonthu Mohan Gandhi, Atmakuri Lakshmana Rao, Jangala Venkateswara Rao
American Journal of Analytical Chemistry (AJAC) , 2015, DOI: 10.4236/ajac.2015.68063
Abstract: A novel, precise, accurate, rapid and cost effective isocratic reverse-phase high performance liquid chromatographic (RP-HPLC) method was developed, optimized and validated for the simultaneous estimation of Montelukast Sodium (MON) and Desloratadine (DES) in pharmaceutical dosage forms. The drugs were estimated using Hypersil BDS C18 (250 mm × 4.6 mm I.D., 5 μ particle size) column. The mobile phase composed of orthophosphoric acid and water in the ratio of 20:80 v/v, at a flow rate of 1.0 ml/min was used for the separation. Detection was carried out at 280 nm. The linearity range obtained was 10 - 30 μg/ml for MON and 5 - 15 μg/ml for DES with retention times of 2.929 min and 4.439 min for MON and DES respectively. The correlation coefficient values were found to be 0.999. Precision studies showed % RSD values less than 2% for both the drugs in all the selected concentrations. The percentage recoveries of MON and DES were in the range of 99.59% - 99.82% and 99.60% - 99.80% respectively. The limit of detection (LOD) and limit of quantification (LOQ) were 0.176 μg/ml, 0.587 μg/ml for MON and 0.087 μg/ml, 0.292 μg/ml for DES respectively. The method was validated as per the International Conference on Harmonization (ICH) guidelines. The proposed validated method was successfully used for the quantitative analysis of commercially available tablet dosage forms.
An Herbal Formula LI85008F Inhibits Lipogenesis in 3T3-L1 Adipocytes  [PDF]
Krishanu Sengupta, Trimurtulu Golakoti, Venkateswara Rao Chirravuri, Ajit Kumar Marasetti
Food and Nutrition Sciences (FNS) , 2011, DOI: 10.4236/fns.2011.28111
Abstract: The present study demonstrates a novel herbal formulation LI85008F inhibiting adipocyte differentiation and potentiates lipolysis in 3T3-L1 mouse adipocytes. LI85008F is formulated by combining extracts of three Indian herbs Moringa oleifera, Murraya koenigii and Curcuma longa. Oil red O staining of 3T3-L1 adipocytes reveals that LI85008F is a synergistic formulation that inhibits adipocyte differentiation in a dose dependent manner and concurrently down regulates the key adipogenic transcription factors Peroxisome Proliferator-Activated Receptor gamma (PPAR) and CCAAT/enhancer binding protein α (C/EBP). LI85008F confers significant reductions in intracellular triglyceride content in a dose dependent manner. Evidence suggests that LI85008F antagonizes PPAR through Ser112 phosphorylation via MAPK/ERK activation. Immunoblot analyses reveal that LI85008F treatment also down regulates the protein expressions of key PPAR responsive gene products such as Adipocyte differentiation related protein (ADRP), CD36, Adipocyte specific binding protein 2 (aP2) and perilipin. In differentiated adipocytes culture, LI85008F treatment results in significantly (p = 0.0169) increased lipolysis as measured by the release of glycerol. LI85008F does not exhibit cytotoxic effect on adipocytes. Taken together, the results suggest that LI85008F inhibits lipogenesis in adipocytes and concurrently antagonizes PPAR? and other lipogenic factors and in addition, potentiates triglyceride mobilization from the fat cells or enhances lipolysis.
Rusty pipe syndrome: A case report  [PDF]
Usharani Thota, Vasudeva Murali Machiraju, Venkateswara Rao Jampana
Health (Health) , 2013, DOI: 10.4236/health.2013.51020
Abstract:

Bloody discharge from the breasts in a lactating woman can be caused by various conditions like cracked nipples, mastitis, trauma or ductal papilloma [1]. A physiological condition called rusty pipe syndrome can also cause bilateral bloody discharge in lactating mothers [2].

Iron and Nitrogen containing Carbon Catalysts with Enhanced Activity for Oxygen Reduction in Proton Exchange Membrane Fuel Cells  [PDF]
Chitturi Venkateswara Rao, Lingam Hima Kumar, Balasubramanian Viswanathan
Open Journal of Physical Chemistry (OJPC) , 2011, DOI: 10.4236/ojpc.2011.11003
Abstract: Iron and nitrogen containing carbon catalysts were prepared by the pyrolysis of iron (III) tetramethoxyphenylporphyrin complex adsorbed on as-received as well as nitric acid treated carbon black and employed them as oxygen reduction electrodes for hydrogen-oxygen PEM fuel cells. The influence of carbon surface functional groups on the dispersion of active species and electrocatalytic performance is investigated using electron microscopic and electrochemical techniques. The existence of quinone functional groups on the nitric acid treated carbon was evident from X-ray photoelectron spectroscopy and cyclic voltammetry. Rotating disk electrode voltammetry results affirmed the good electrocatalytic activity and stability of pyrolyzed macrocyclic complex adsorbed on nitric acid treated carbon compared to that of as-received carbon. This is ascribed to the greater number of Fe/N active species as well as good dispersion of metal clusters over nitric acid treated carbon support. Fuel cell tests depicted the comparable performance of pyrolyzed complex adsorbed on nitric acid treated carbon with commercial Pt/C at 353 K. Durability measurements performed under fuel cell operating conditions for 120 h indicate the good stability of the catalysts.
Surface Analysis of Carbon Steel Protected from Corrosion by a New Ternary Inhibitor Formulation Containing Phosphonated Glycine, Zn2+ and Citrate  [PDF]
Boyapati Venkata Appa Rao, Madala Venkateswara Rao, Sirugudu Srinivasa Rao, Bojja Sreedhar
Journal of Surface Engineered Materials and Advanced Technology (JSEMAT) , 2013, DOI: 10.4236/jsemat.2013.31005
Abstract: Studies on surface analysis of carbon steel protected from corrosion in low chloride and nearly neutral aqueous environment by a synergistic mixture containing N,N-bis(phosphonomethyl) glycine (BPMG), zinc ions and citrate ions are presented. The effect of addition of citrate to the binary system, BPMG-Zn2+, is quite significant and is well explored through various studies. The surface protective nature is maintained in the pH range 5 - 9. Potentiodynamic polarization studies inferred that the ternary inhibitor is a mixed inhibitor. Impedance studies of the metal/solution interface indicated that the surface film is highly protective against the corrosion of carbon steel in the chosen environment. X-ray photoelectron spectroscopic (XPS) analysis of the surface film showed the presence of the elements namely iron, phosphorus, nitrogen, carbon, oxygen and zinc. Deconvolution spectra of these elements in the surface film inferred the presence of oxides/hydroxides of iron(III), Zn(OH)2 and [Fe(III), Zn(II)-BPMG-citrate] heteropolynuclear multiligand complex. This inference is further supported by the reflection absorption Fourier transform infrared spectrum of the surface film. Analysis by scanning electron microscopy (SEM) is presented for both the corroded and protected metal surfaces. Based on all these results, a plausible mechanism of corrosion inhibition is proposed.
Improvement in Surface Quality with Solid Lubrication in Hard Turning
Dilbag Singh,P. Venkateswara Rao
Lecture Notes in Engineering and Computer Science , 2008,
Abstract:
Hydro geological and Geophysical studies for delineation of freshwater source in the paleobeach ridges around Kolleru Lake, Andhra Pradesh, India.
Harikrishna Karanam ,Venkateswara Rao Velaga
International Journal of Engineering Trends and Technology , 2013,
Abstract: Fresh ground water is widely distributed in subsurface sediments below the beach ridges of Kolleru Lake. Beach ridges were formed at down stretch of Kolleru Lake with width of 2 to3 km but going towards to coast the width of beach ridge is going to limit up to 1km only. This study investigated the shallow subsurface of the beach ridges in down stretch of Kolleru Lake. The depth of sand deposition was calculated through geophysical resistivity survey. The agricultural lands in the catchment area use high amount of fertilizers as well pesticides and the runoff from this area also become one of the pollution source. Number of aqua culture farm ponds is created since last 10 to 15 years with in the lake area and lot of aqua feed and pesticides are used for the culture. All the above mentioned pollution sources might have induced pollution into the groundwater which is to be studied. Hydrogeomorphological study indicates that the potential aquifers around the Kolleru Lake are paleo beach ridges, buried river courses. All other geomorphic features either aquiclude or aquitards and may not be considered as prospective zones for groundwater. Though there are number of open wells present in the villages used for potable water, people are depending on imported water as their drinking water source, which signifies the contamination of groundwater resources. Present land use activities like aqua-culture, agriculture, large-scale industries and allied industries in and around the Kolleru Lake Region has large contribution for the change of water quality. The paleo beach ridge areas, where the permeability of the sandy soil is very high are also converted into aqua ponds. Integrated study using remote sensing, hydrogeology, hydrochemistry and geophysical investigations along the beach ridges. The electrical resistivity of aquifers is less than 1.0 (ohm-m) having salinity of more than 1.2 ppt and the resistivity is around 20 (ohm-m) where the salinity is less than 0.5 ppt, has also served as an excellent criteria for delineating the fresh-water and salt-water interface. Lenses of fresh water/ brackish water are noticed only in the beach ridges limiting to 2-8m depth below the natural ground level.
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