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Search Results: 1 - 10 of 198929 matches for " N. Raju "
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A simple technique to fixate the bullet pipe and perform bimanual vitreous surgery.
Raju Biju,Raju N,Raju Anju
Indian Journal of Ophthalmology , 2006,
Evaluation of Groundwater Quality and Its Suitability for Domestic and Irrigation Use in Parts of the Chandauli-Varanasi Region, Uttar Pradesh, India  [PDF]
Shubhra Singh, N. Janardhana Raju, Ch. Ramakrishna
Journal of Water Resource and Protection (JWARP) , 2015, DOI: 10.4236/jwarp.2015.77046
Abstract: The present study focused on the hydrochemistry of groundwater in parts of Chandauli-Varanasi region to assess the quality of groundwater for determining its suitability for drinking and agricultural purposes. Urbanization and agriculture activities have a lot of impacts on the groundwater quality of the study area. A total of 70 ground water samples were collected randomly from different sources viz. hand pump, dug wells and bore wells, and analyzed for major cations and anions. The domination of cations and anions was in the order of Na > Ca > Mg > K and HCO3 > Cl > SO4 > NO3 > F. The Piper classification for hydrogeochemical facies indicates that alkaline earth exceeds alkalis and weak acids exceed strong acid. Water quality index rating was calculated to quantify overall water quality for human consumption. Out of 70 groundwater samples, 7% and 10% samples exhibit water unsuitable for drinking purposes in pre- and post-monsoon, respectively, due to effective leaching of ions, direct discharge of domestic effluents and agricultural activities. Residual sodium carbonate values revealed that 6% sample is not suitable for irrigation purposes in both the seasons due to low permeability of the soil. The calculated values of PI indicate that the water for irrigation uses is excellent to good quality in both seasons. As per Wilcox’s diagram and US salinity laboratory classification, most of the groundwater samples are suitable for irrigation except one sample which is unsuitable for irrigation purposes. The overall quality of groundwater in post-monsoon season in all chemical constituents is on the higher side due to dissolution of surface pollutants during the infiltration and percolation of rainwater at few places due to agricultural and domestic activities.
Digital video recording and archiving in ophthalmic surgery
Raju Biju,Raju N,Raju Anju,Sudhakaran C
Indian Journal of Ophthalmology , 2006,
Abstract: Currently most ophthalmic operating rooms are equipped with an analog video recording system [analog Charge Couple Device camera for video grabbing and a Video Cassette Recorder for recording)]. We discuss the various advantages of a digital video capture device, its archiving capabilities and our experience during the transition from analog to digital video recording and archiving. The basic terminology and concepts related to analog and digital video, along with the choice of hardware, software and formats for archiving are discussed.
Spectral, Electrochemical and Molecular Modeling Studies of Some 3 (2 Hydroxy benzalhydrazino-4-thiazolyl)coumarins
N. Raju,A. Ramachandraiah
Journal of Chemistry , 2010, DOI: 10.1155/2010/125972
Multi Model Criteria for the Estimation of Road Traffic Congestion from Traffic Flow Information Based on Fuzzy Logic  [PDF]
Hari Shankar, P. L. N. Raju, K. Ram Mohan Rao
Journal of Transportation Technologies (JTTs) , 2012, DOI: 10.4236/jtts.2012.21006
Abstract: In this study, the road traffic congestion of Dehradun city is evaluated from traffic flow information using fuzzy techniques. Three different approaches namely Sugeno, Mamdani models which are manually tuned techniques, and an Adaptive Neuo-Fuzzy Inference System (ANFIS) which an automated model decides the ranges and parameters of the membership functions using grid partition technique, based on fuzzy logic. The systems are designed to human’s feelings on inputs and output levels. There are three levels of each input namely high, medium and low for input density, fast, medium and slow for input speed, and five levels of output namely free flow, slow moving, mild congestion, heavy congestion and serious jam for the road traffic congestion estimation. The results, obtained by fuzzy based techniques show that the manually tuned Sugeno type technique achieves 72.05% accuracy, Mamdani type technique achieves 83.82% accuracy, and Adaptive Neuro-Fuzzy Inference System technique achieves 88.23% accuracy. ANFIS technique appears better than the manually tuned fuzzy technique, and also the manually tuned fuzzy technique gives good accuracy which leads that the fuzzy inference system can capture the human perception better through manual adjustment of input/output membership functions.
Corrosion Behavior of Cu-Zn-Ni Shape Memory Alloys  [PDF]
S. Sathish, U. S. Mallik, T. N. Raju
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2013, DOI: 10.4236/jmmce.2013.12010

Four shape memory alloys of Cu-Zn-Ni, in the range of 35-55 wt% of Cu, 43-60 wt% Zn and 2-9 wt% Ni, were prepared by ingot metallurgy route in an induction furnace under an inert atmosphere. The shape memory effect was tested by bend test. The alloys were further tested for its corrosion behavior in fresh water, Hank’s solution and sea water. From the results it was observed that the alloys exhibit high corrosion resistance in fresh water when compared to Hank’s solution and sea water. And it was also observed that the alloys exhibit better corrosion resistance in Hank’s solution than in sea water.

Microstructure and Shape Memory Effect of Cu-Zn-Ni Shape Memory Alloys  [PDF]
Sathish S, U. S. Mallik, T. N. Raju
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2014, DOI: 10.4236/jmmce.2014.22011
Abstract: The microstructure, martensitic transformation behavior and shape memory effect of Cu-Zn-Ni shape memory alloy have been studied by X-ray diffraction (XRD), optical microscopy (OM) and differential scanning calorimetry (DSC). The results show that the recrystallization occurs in the hot-rolled Cu-Zn-Ni alloy by annealing at 800℃ and alloy is primarily composed of martensite. A reverse martensite transformation temperature higher than 100℃ upon heating has been detected. The alloys exhibit good ductility and shape memory effect (SME). The results obtained are discussed in detail.
N. Jaya Raju,N. Sreekanth
International Journal of Research in Ayurveda and Pharmacy , 2011,
Abstract: Ficus retusa (Moraceae) is distributed through out Western peninsula and also found in Chota Nagpur, Bihar, Central India, Andamans, Sundribuns, Malaya islands and Australia. In Sanskrit, it is known as ‘Kantalaka’, ‘Kshudra’ and in Telugu it is well known as ‘Yerrajuvvi’. Ficus leaves of ethyl acetate and methanolic extracts (100, 200 and 400 mg/kg) was prepared and tested for its hepatoprotective effect against carbon tetrachloride induced in rats. Alteration in the levels of biochemical markers of hepatic damage like SGPT, SGOT, ALP, bilirubin were tested in both treated and untreated groups. Carbon tetrachloride has enhanced the SGPT, SGOT, ALP and bilirubin levels. Treatment with ethyl acetate extract of Ficus retusa leaves has brought back the altered levels of biochemical markers to the near normal levels in the dose dependent manner SGOT (213.1± 1.25, 198.2± 3.45, 180.6 ± 2.05), SGPT(195.1±2.22, 168.4±1.36, 112.6±3.24), ALKP(215.6±4.60, 202.3±2.45, 195.1±3.20) and T.B(1.24±0.01, 1.05±1.08, 0.96±0.13) levels respectively. Though both the extracts were recorded with significant hepatoprotective activity with same “p” value (p<0.001). Which were significant protective activity in groups treated with FR and silymarin. It was concluded from the study that ethyl acetate and methanolic extracts of FR possess hepatoprotective activity against CCl4 induced hepatotoxicity in rats.
N. Jaya Raju,N. Sreekanth
International Journal of Research in Ayurveda and Pharmacy , 2011,
Abstract: The study was designed to evaluate the anti-inflammatory effect of leaves of Ficus retusa (Moraceae) in Sanskrit, it is known as ‘Kantalaka’, ‘Kshudra’ and in Telugu it is well known as ‘Yerrajuvvi’. It is also called as “Indian Laurel Fig" of ethyl acetate and methanolic extracts in carrageenan induced albino wistar rats of either sex (175-250g). The anti-inflammatory effects of ethyl acetate extract of Ficus retusa 200, 400 mg/kg p.o were found to be significant (P<0.05) in reducing rat paw oedema induced by carrageenan, where as methanolic extract produced significant reduction of paw oedema at 400 mg/kg p. o. Diclofenac sodium(50 mg/kg) was used as the reference anti-inflammatory agent for comparison. The ethyl acetate extract was highly significant in reducing rat paw oedema.
Optimization of Gallic Acid Production from Terminalia Chebula by Aspergillus niger
N. Lokeswari,K. Jaya Raju
Journal of Chemistry , 2007, DOI: 10.1155/2007/649306
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