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- P. Ravinder Reddy
- M. Santhosha Kumari
- A.V.S.S.K.S. Gupta
- S. Anantharaman
- D. C. Dassarma
- P. Ashok kumar
- K. Sundar
- Pramodaganta
- G. Surendrabhoopathi
- Suresh V. Kulakarni
- P. M. Yashaswini
- B. Someshwara Rao
- P. Ranjit Kumar
- R. Vinod
- Suresh V. Kulkarni
- Sumanta Malakar
- Amit S. Yadav
- Nikunj Patel
- Basavaraj
- Tom Damien
- P. Bangaraiah
- Nikhil Shajan
- Kanwer S. Arora
- M. Shome
Journals
- International Review of Applied Engineering Research
- Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)
- Review of Professional Management- A Journal of New Delhi Institute of Management
- Asian Journal of Research in Pharmaceutical Sciences
- Research Journal of Pharmaceutical Dosage Form and Technology
- Asian Journal of Management
- Research Journal of Pharmacy and Technology
- Indian Welding Journal
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Ashok Kumar, P.
- Assessment of SIF’s for a Crack with Single and Double Patches Using FEM
Abstract Views :522 |
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Authors
Affiliations
1 Jayamukhi Institute of Technological Sciences, Narsampet, Warangal (Dt) – 506 322, AP, IN
2 Chaitanya Bharati Institute of Technology, Hyderabad-75, IN
3 Christu Jyothi Institute of Technology & Science, Jangaon, Warangal (Dt) – 506 167, IN
4 JNTU College of Engineering, Hyderabad, IN
1 Jayamukhi Institute of Technological Sciences, Narsampet, Warangal (Dt) – 506 322, AP, IN
2 Chaitanya Bharati Institute of Technology, Hyderabad-75, IN
3 Christu Jyothi Institute of Technology & Science, Jangaon, Warangal (Dt) – 506 167, IN
4 JNTU College of Engineering, Hyderabad, IN
Source
International Review of Applied Engineering Research, Vol 3, No 1 (2013), Pagination: 13-21Abstract
The aim of this study is to estimate numerically the beneficial effect of adding patches for repairing cracks using the finite element method. The Stress Intensity Factors (SIFs) are obtained using patches. It is observed that with patch on the cracks there is a reduction of stress intensity factors. The effects of the adhesive, patch and plate properties on the rate of reduction of the stress intensity factors is highlighted. In this work, FRANC 2D/L has been used as an analysis tool to compare the SIF values for the plate with or without patches.Keywords
Finite Element Method, Stress Intensity Factor, Adhesive, Composite Repair
References
- ASME Meeting Reports on Fracture Mechanics.
- Paulo F.P. De Matos, Pedro M.G.P. Moreira, Paulo M.S.T. De Castro. “Stress Intensity Factor Determination Using The Finite Element Method.” Project GRD1-2000-25069 of the commission of the European community.
- Chan, S. K., Tuba, I. S., Wilson, W. K., 1970, “ On the Finite Element in Linear Fracture Mechanics,” Engg. Fracture Mech., Vol 2, pp 1-17.
- R D Henshell and K G Shaw, 1975, “Crack Tip Finite Elements are Unnecessary,” International Journal of Numerical Methods in Engineering, Vol 9, pp 495-507.
- R.S. Barsoum, 1976, “On the use of Isoparametric Finite Elements in Linear Fracture Mechanics,” International Journal of Numerical Methods in Engineering. Vol 10, pp 25-37.
- Daniel Swenson and Mark James FRANC-2D/L: A Crack Propagation Simulator for Plane Layered Structures, Kansas State University, Manhattan, Kanas.
- Paul Wawrzyneck and Louis Martha, 1997, “CASCA: A Simple 2-D Mesh Generator”, Cornell University, Ithaca, New York.
- Shigley’s Mechanical Engineering Design, eighth edition, Mc.Graw Hill publication.
- David Broeak, A Text Book on Elementary Engineering Fracture Mechanics, Martinus Nijhoff Publishers
- N.Perez, 2004, Fracture Mechanics, Kluwer Publications.
- E.Gdoutos, 2005, Fracture Mechanics- an Introduction, Springer series.
- A. Shukla, 2005, Practical Fracture Mechanics in Design 2nd edition, Marcel Dekker Publication.
- D.Broek, 1988, The Practical use of Fracture Mechanics, Kluwer Publications.
- Calculation Of Fracture Mechanic Parameters Via FEM For Some Cracked Plates Under Different Loads by Ngo Huong Nhu and Nguyen Truong, Giang Institute of Mechanics, VAST, 264 Doi Can, Hanoi, Vietnam.
- P.Ashok Kumar, Dr.P.Ravinder Reddy, N.Sharath Chandra, Dr.A V S S K S. Gupta, 2009, “Investigation of Stress Intensity Factor for a Plate with Hole Using FEA,” International journal of Theoretical and Applied Mechanics, vol 4, no 2, pp 223-233.
- A New Species of Quaternary Hippopotamid from Bhima Valley, Karnataka
Abstract Views :212 |
PDF Views:2
Authors
Affiliations
1 Palaeontology Division, Geological Survey of India, Hyderabad - 560 068, IN
1 Palaeontology Division, Geological Survey of India, Hyderabad - 560 068, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 2 (2005), Pagination: 209-216Abstract
A nearly complete skull of a fossil hippopotamus collected from the Quaternary alluvial deposits in the Bhima valley in Karnataka, India, is described herein. Comparison with known Indian forms along with other species of this genus establishes that the present form is a hitherto unknown species, named as Hippopotamus deccaaensis Sp. Nov.Keywords
Hippopotamid, Hippopotamus deccanensis, Quaternary, Bhima Valley, Karnataka.- A Study on Robustness of Uzhavar Sandhai (Farmers' Market) in Salem District
Abstract Views :429 |
PDF Views:136
Authors
P. Ashok kumar
1,
K. Sundar
2
Affiliations
1 DE, Department of Commerce Wing, Annamalai University, IN
2 Commerce Wing, DDE, Annamalai University, IN
1 DE, Department of Commerce Wing, Annamalai University, IN
2 Commerce Wing, DDE, Annamalai University, IN
Source
Review of Professional Management- A Journal of New Delhi Institute of Management, Vol 9, No 1 (2011), Pagination: 112-119Abstract
The present study has been conducted in Salem district to appraise the level of strength and performance about the Uzhavar Sandhai (Farmers' Market). A sample of 200 respondents (100 Farmers and 100 Consumers) has been contacted for this purpose. It has brought to light the negative factors interfering with the smooth functioning of Uzhavar Sandhai (Farmers' Market). The study has proposed some valid measures for enabling Uzhavar Sandhai to operate more transparently. If these measures are implemented in true letters and sprits, there would be a spectacular growth of Uzhavar Sandhai (Farmers Market) in Tamil Nadu.Full Text
- Current Innovation in Layered Tablet Technology:Review
Abstract Views :177 |
PDF Views:2
Authors
Affiliations
1 Sree Siddaganga College of Pharmacy, B.H. Road, Tumkur- 572102, IN
1 Sree Siddaganga College of Pharmacy, B.H. Road, Tumkur- 572102, IN
Source
Asian Journal of Research in Pharmaceutical Sciences, Vol 3, No 4 (2013), Pagination: 189-194Abstract
In the recent tablets have got more attraction compared to other dosage forms because of simple, inexpensive, highest stability, most suitable nature of tablets. Layered tablets are having greater advantages in current research and development. More number of polymers are available for the preparation of matrix core and it is also acting as release retardant layers. Several methods are used to alter the release rate of drugs by oral route of administration. Layered matrix tablets are one among the method which is used for effective controlled drug delivery. In this review article types of layered tablets, formulation techniques, and various materials used in formulation, various tablet presses, marketed products were analysed in detailed manner.Keywords
Layered Tablets, Bi-Layered Tablets, Multi-Layered, Technologies, Approaches.- Formulation and Evaluation of Nicorandil Chewing Gum
Abstract Views :180 |
PDF Views:0
Authors
P. M. Yashaswini
1,
B. Someshwara Rao
1,
P. Ranjit Kumar
1,
R. Vinod
1,
Suresh V. Kulkarni
1,
P. Ashok Kumar
2
Affiliations
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
Source
Research Journal of Pharmaceutical Dosage Form and Technology, Vol 2, No 4 (2010), Pagination: 301-306Abstract
The study was to formulate and evaluate medicated chewing gum of Nicorandil, a novel potassium channel opener used in cardiovascular diseases. The chewing gums were prepared by direct compression method using different ratio of directly compressible gum base (pharmagum-M) in order to obtain new formulation. Eight different formulations of chewing gums of Nicorandil were prepared, which contains various concentration of pharmagum M. The chewing gums which are prepared by direct compression method were characterized by pre compression characters, post compression character, buccal absorption study, drug content, and in vitro drug release studies. All the formulations gave satisfactory results in terms of pre compression characters, post compression character, buccal absorption study, drug content, and in vitro drug release. The best compression characters and in vitro drug release profile were achieved in formulations F4, F5 and F6 with a gum concentration of 84%, 86% and 88% respectively.Keywords
Chewing gum, Buccal absorption, Nicorandil, Pharmagum M, Sorbitol.- Design and Evaluation of the Fast Dissolving Tablets of Aceclofenac by Sublimation Technique
Abstract Views :224 |
PDF Views:0
Authors
Affiliations
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
Source
Research Journal of Pharmaceutical Dosage Form and Technology, Vol 2, No 3 (2010), Pagination: 233-236Abstract
The purpose of this study was to formulate and evaluate fast dissolving tablet of aceclofenac by sublimation technology using camphor. Sodium starch glycolate and crospovidone were used as superdisintegrants. Tablets were prepared by wet granulation technique. The granules were evaluated for angle of repose, bulk density, tapped density and compressibility index. Tablets were evaluated for weight variation, hardness, friability, drug content, wetting time, in vitro dispersion and in vitro dissolution. In vitro release studies were performed using USP XXII dissolution apparatus type II (Electro lab, Mumbai, India) paddle method in 900 ml of pH-7.4 at 75 rpm. Among all the formulation, F-6 shows 83.26% release at the end of 22 min. Thus, F-6 was considered as the best among the other formulations. The selected formulation F-6 was subjected to stability studies for three months, which showed stability with respect to release pattern.Keywords
Aceclofenac, Sodium Starch Glycolate, Crospovidone, Fast Dissolving Tablets.- Use of Hydrophilic Natural Guar Gum in Formulation of Controlled-Release Matrix Tablets of Metformin Hydrochloride and Its Comparison with Marketed Product
Abstract Views :201 |
PDF Views:0
Authors
Nikunj Patel
1,
P. Ashok Kumar
2,
Basavaraj
1,
Tom Damien
1,
B. Someshwara Rao
1,
Suresh V. Kulkarni
1
Affiliations
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H. Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B. H. Road, Tumkur-572102, Karnataka, IN
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H. Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B. H. Road, Tumkur-572102, Karnataka, IN
Source
Research Journal of Pharmaceutical Dosage Form and Technology, Vol 2, No 2 (2010), Pagination: 193-197Abstract
In the present investigation an attempt was made to formulate the oral controlled release metformin hydrochloride matrix tablets by using Guar gum as rate controlling polymer and to evaluate drug release parameters as per various release kinetic models. The tablets were prepared by wet granulation method. Granules were prepared and evaluated for loose bulk density, tapped density, compressibility index and angle of repose, shows satisfactory results. All the granules were lubricated and compressed using 12.8 mm flat faced punches. Compressed tablets were evaluated for uniformity of weight, content of active ingredient, friability, hardness, in vitro release studies and swelling index. All the formulations showed compliance with Pharmacopoeial standards. The in vitro dissolution study was carried out for 12 hours using paddle (USP type II) method in phosphate buffer (pH 6.8) as dissolution media. The prepared matrix tablets were shown 99.92%, 97.41%, 94.95%, 89.29%, 86.41% and 84.72% release over a period of 12 hours. Formulations F-1 and F-2 failed to sustain release beyond 9 hours and 11 hours, respectively. Among all the formulations, F-5 showed the controlled release of drug for 12 hours with 86.41% release and the release profile was close to the marketed sample of metformin hydrochloride (M-SR). Selected formulation (F-5) was subjected to stability studies for 3 months, which showed stability with respect to release pattern. The drug release follows first order kinetics and the mechanism was found to be diffusion coupled with erosion.
Keywords
Metformin Hydrochloride, Guar Gum, Matrix Tablets, Wet Granulation, Controlled Release.- Formulation and Evaluation of Controlled Release Microspheres of Zidovudine
Abstract Views :186 |
PDF Views:0
Authors
Affiliations
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B. H. Road, Tumkur-572102, Karnataka, IN
1 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B.H.Road, Tumkur-572102, Karnataka, IN
2 Department of Pharmaceutics, Sree Siddaganga College of Pharmacy, B. H. Road, Tumkur-572102, Karnataka, IN
Source
Research Journal of Pharmaceutical Dosage Form and Technology, Vol 2, No 1 (2010), Pagination: 96-99Abstract
The aim of this study was to formulate and evaluate microencapsulated controlled release preparations of zidovudine, using Copolymers Eudragit S 100 and RL 100 (acrylic and methacrylic acid esters) and Ethyl cellulose as the retardant material. Microspheres were prepared by solvent evaporation method using an acetone/liquid paraffin system. Magnesium stearate was used as the droplet stabilizer and n-hexane was added to harden the microspheres. The prepared microspheres were characterized for their micromeritic properties, drug loading, as well by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The in vitro release studies were performed in pH 7.4, phosphate buffer. The prepared microspheres were white, free flowing and spherical in shape. The drugloaded microspheres show 81-93% of entrapment and release was extended more than 10hrs. Stability studies revealed that polymers used were stable and compatible with the drug and there is no significant effect on physical characteristics, drug content and dissolution profile of the microspheres. Scanning electron microscopy study revealed that the microspheres were spherical with rough surface. The best-fit release kinetics was achieved with Higuchi's plot followed by First order and Zero order. The release of Zidovudine was influenced by the drug to polymer ratio, particle size&was found to be diffusion controlled.
Keywords
Controlled Release, Ethyl Cellulose, Eudragit S100 and RL 100, Microspheres, Zidovudine.- Problems Hindering the Job Performance of Women Executives in Private Sector Banks in Puducherry
Abstract Views :287 |
PDF Views:0
Authors
P. Ashok Kumar
1,
K. Sundar
2
Affiliations
1 Department of Commerce, Annamalai University, Annamalai Nagar-608 002, Tamil Nadu, IN
2 Commerce Wing, DDE, Annamalai University, Annamalai Nagar-608 002, Tamil Nadu, IN
1 Department of Commerce, Annamalai University, Annamalai Nagar-608 002, Tamil Nadu, IN
2 Commerce Wing, DDE, Annamalai University, Annamalai Nagar-608 002, Tamil Nadu, IN
Source
Asian Journal of Management, Vol 3, No 2 (2012), Pagination: 73-79Abstract
India is a country with diverse traditions and customs. Liberalization Globalization and Privatization (LPG) of the Indian economy has thrown up considerable employment opportunities for those, including women, who possess marketable skills and talent. Historically, majority of women employees in India have not attained a good status in workplace settings whether in managerial or operative roles. This traditional positioning of women has restricted the intensity of their efforts towards realizing the benefits of the globalisation process. Indian women is distinct from their western counter parts in that they do not shed their conventional roles as mothers and house wives inspire of their professional responsibilities. They are skilled at blending professional excellence and traditional love for home harmoniously. In the process of balancing work and home life, they encounter a plethora of problems. The study is purely exploratory in nature and seeks to identify the factors preventing women employees from aspiring for higher post and problems hindering the work performance of women executives in private sector banks in Pondicherry. Further this aims also at finding out the organizational support for women employees to achieve better work performance. The conclusion has been given.Keywords
Career Advancement, Problems Faced by Women Executives, Role of Women, Women in Banking Industry, Working Women.- Production of White Wine from Grapes Using Sacharomyces cervisiae
Abstract Views :175 |
PDF Views:2
Authors
Affiliations
1 Department of Chemical Engineering, Vignan University, Vadlamudi, IN
2 Department of Chemical Engineering, S.V. University, Tirupati, IN
1 Department of Chemical Engineering, Vignan University, Vadlamudi, IN
2 Department of Chemical Engineering, S.V. University, Tirupati, IN
Source
Research Journal of Pharmacy and Technology, Vol 10, No 2 (2017), Pagination: 391-395Abstract
Wine is an alcoholic beverage often made of fermented grape juice. The natural chemical balance of grapes is such that they can ferment without the addition of sugars, acids, enzymes or other nutrients. Wine is produced by fermenting crushed grapes using various types of yeast which consume the sugars found in the grapes and convert them into alcohol. Different varieties of grapes and strains of yeasts are used depending on the types of wine being produced. Although other fruits such as apples and berries can also be fermented, the resultant wines are normally named after the fruit from which they are produced (for example, apple wine or elderberry wine) and are generically known as fruit wine or country wine. Wine is an undistilled product obtained after normal alcoholic fermentation of grapes by yeast. Wine is basically the transformation of sugars of grapes by yeast under anaerobic conditions in to ethanol, co2, and small amounts of byproducts like D-Glucose, D-fructose. In our project, for the extraction of juice grapes must be stemed, cleaned, and crushed and then sodium or potassium metabiosulphate is added to check undesirable organisms. The crushed grape is called must. Fermentation is carried out by adding 2-5% of wine yeast namely sacharomyces cervisiae, anaerobic conditions favors the alcoholic fermentation liberating ethanol, co2. Main aim of this work is to produce white wine from grapes. A detailed study on grapes and different methods to produce wine is also reported. By analysis of wine, we reported the percentage purity, alcohol percentage in produced wine and different compound compositions.Keywords
Grapes, Fermentation, Yeast and Wine.- Repair Welding Procedure for P460NH Grade Steel Making Ladles
Abstract Views :480 |
PDF Views:11
Authors
Affiliations
1 Material Characterization and Joining (MCJ) Group, Research and Development Tata Steel, Jamshedpur, Jharkhand - 831001, IN
1 Material Characterization and Joining (MCJ) Group, Research and Development Tata Steel, Jamshedpur, Jharkhand - 831001, IN
Source
Indian Welding Journal, Vol 51, No 2 (2018), Pagination: 57-65Abstract
P460NH steels are extensively used in steel plants as ladle fabrication material. However, fusion welding of these steels leads to the problems such as cold cracking, residual stress, distortion and fatigue damage, these steels may require welding of the cracks that can develop during fabrication, handling and transportation stages, or during the service life of the plant. Present work explains repair welding procedure used for P460NH steel ladles welded by using shielded metal arc (SMA) welding and flux cored arc (FCW) welding processes and evaluation of its weld metal and heat affected area (HAZ) microstructure. Butter bead tempered bead technique followed to fill the joint groove and simulated repair welding of SMA and FCA welds was carried out at the weld/base metal interface, i.e. at the location at which cracks are usually reported to occur during fabrication. SMA repair welding procedure conforming to the ASME Boiler and pressure Vessel Code were used followed by post heating of welds at 300°C for 2 hours per 25mm thickness of the weld. Tensile properties, bend tests, hardness profiles, impact tests and metallography studies using scanning electron microscope (SEM) were determined for both SMA and FCA welds to evaluate simulated repair welds. Analysis of the test results showed that the cooling rate maintained by means of preheating, interpass and post heating plays an important role in repairing of P460NH steel weld cracks.Keywords
Repair Welding, Ladles, Welding Procedure, P460NH Grade Steel, Microstructure.References
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- ASME Boiler and Pressure Vessel Code, Section XI, 217–223; Code Case N–236–1, 385–394; Code Case N–432, 757–760, ASME, New York, 1986.
- Zhang Y, Zhang H, Li J and Liu W (2009); Effect of heat input on microstructure and toughness of coarse grain heat affected zone in Nb microalloyed HSLA steels, J Iron Steel Research Inter, 16(5), pp.73-80.
- Lee CH, Bhadeshia HKDH and Lee HC (2003); Effect of plastic deformation on the formation of accicular ferrite, Mater Sci Eng A, 360(1-2), pp.249-257.
- Dhua SK and Sen SK (2011); Effect of direct quenching in the microstructure and mechanical properties of the lean chemistry HSLA-100 steel plates, Mater Sci Eng A, 528(21), pp.6356-6365.