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Search Results: 1 - 10 of 200662 matches for " P. Rajakumar "
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Trauma from occlusion - An orthodontist′s perspective
Saravanan R,Babu Prajeeth,Rajakumar P
Journal of the Indian Society of Periodontology , 2010,
Abstract: Orthodontic therapy has a big role in the treatment and prevention of malpositions. The signs and symptoms experienced by patients with occlusal trauma are mobility of teeth, temperomandibular joint pain, pain on mastication and periodontal disease. Early diagnosis, proper treatment plan and correction of malocclusion can lead to a successful outcome. Lack of awareness of orthodontic treatment in patients with occlusal trauma can even lead to loss of tooth structure.
C. Ramathilagam,N. Venkatesan,P. Rajakumar,P. R. Umarani
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811039286
Abstract: In the title compound, C20H14N2, the carbazole ring system is essentially planar (r.m.s. deviation = 0.187 ) and is inclined at an angle of 54.33 (4) ° with respect to the benzene ring. The crystal packing is stabilized by weak C—H...N and C—H...π interactions.
S. Ranjith,A. Thirunarayanan,S. Raja,P. Rajakumar
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810031193
Abstract: The molecule of the title chalcone derivative, C21H20O5, consists of two substituted aromatic rings bridged by a prop-2-en-1-one group. The dihedral angle between the two benzene rings is 28.7 (7)°. In the crystal, molecules are linked into C(10) chains running along the a axis by intermolecular C—H...O hydrogen bonds, and the chains are cross-linked via C—H...π interactions.
Effects of Oral Administration of Antioxidant Taurine on Haematological Parameters in Wistar Rats
P. Anand,D. Rajakumar,A. John William Felix,T. Balasubramanian
Pakistan Journal of Biological Sciences , 2010,
Abstract: The present study evaluates the effects of oral administration of taurine on haematological parameters in normal wistar rats. Tissue oxidative stress is implicated in pathogenesis of various clinical disorders and antioxidant taurine is emerging as prophylactic and therapeutic agent. However, studies on effects of taurine on normal physiology are not reported in literature. Normal saline (Group I) or 5% taurine in normal saline was administered in dose of 50 mg (Group II), 250 mg (Group III) or 500 mg kg-1 of b.wt. (Group IV) through intragastric intubation for 60 days. The blood cell counts, haemoglobin content, packed cell volume, blood indices, bleeding time and clotting time were estimated using routine laboratory haematological techniques. Neutrophil’s phagocytic activity was determined by nitroblue tetrazolium reduction test; serum lysozyme activity was estimated colorimetrically by the degree to lyse bacterial cell suspension and serum taurine levels were estimated by HPLC fluorimetric technique. Platelet count showed a decrease in Group III and IV when compared with Group I and II (p<0.001). Mean corpuscular haemoglobin of Group III and IV are significantly lowered when compared to Group I (p<0.001). A statistically significant decrease was observed in the mean corpuscular haemoglobin concentration between Group I and Group IV (p<0.001). The neutrophil percentage of Group II, Group III and Group IV showed a significant increase over Group I (p<0.001). The percentage of lymphocytes showed a significant decrease in Group II, III and Group IV when compared to Group I (p<0.001). Neutrophil’s phagocytic activity is significantly lowered in Group III and IV when compared to Group I (p<0.001). The serum lysozyme activity of Group III and IV showed a significant increase over Group I (at p<0.001). From the present study it may be concluded that long term oral administration of taurine affects normal haematological functions.
Effects of Taurine on Glutathione Peroxidase, Glutathione Reductase and Reduced Glutathione Levels in Rats
P. Anand,D. Rajakumar,Mathew Jeraud,A. John William Felix
Pakistan Journal of Biological Sciences , 2011,
Abstract: The aim of the present study is to investigate the effects of oral administration of taurine on endogenous glutathione peroxidase (GPx) and Glutathione Reductase (GR) activities and reduced glutathione (GSH) level in normal rats. Normal saline (Group I) or 5% taurine in normal saline was administered in dose of 50 mg (Group II), 250 mg (Group III) or 500 mg kg-1 of body weight (Group IV) through intragastric intubation for 60 days. GPx and GR enzyme activities and GSH and taurine levels were determined in liver, heart, stomach, kidney and plasma of normal Wistar rats. GPx activity showed an increase in liver, heart, stomach and plasma. GR activity increased in kidney and decreased in liver and plasma. GSH levels increased in liver, stomach and decreased in kidney. Liver showed an increase and heart, stomach and kidney a decrease in taurine level in taurine administered rats when compared to control rats. The results varied from organ to organ and the observed variations among organs might be related to their respective enzymatic, non-enzymatic antioxidant potential and its functions. From the present study it may be concluded that long term oral administration of taurine affects GPx, GR and GSH levels in normal rats.
4,5-Bis(1H-imidazol-1-ylmethyl)acridine monohydrate
S. Thenmozhi,S. Ranjith,S. Raja,P. Rajakumar
Acta Crystallographica Section E , 2009, DOI: 10.1107/s160053680903267x
Abstract: In the title compound, C21H17N5·H2O, the dihedral angles between the acridine ring system and the imidazole rings are 78.8 (1) and 71.2 (1)°. The crystal packing is stabilized by O—H...N, C—H...O, C—H...π and π–π interactions [centroid–centroid separations = 3.732 (1) and 3.569 (1) ].
MK Rajakumar
Malaysian Family Physician , 2006,
Malaysian Family Physician , 2008,
Identifying stable Bt cotton genotypes with superior fibre quality parameters for irrigated situations
Rajakumar., Nidagundi J. M.*., Kuchanur P.K And Konda C. R.
Electronic Journal of Plant Breeding , 2012,
Abstract: Twenty two Bt cotton hybrids were evaluated for seed cotton yield and fibre quality parameters over threeenvironments viz., Agricultural Research Station, Siruguppa (E-1), Main Agricultural Research Station, Raichur (E-2) and Agricultural Research Station, Bheemarayanagudi (E-3), during Kharif 2010-11. The seed cotton yieldranged from 1478 to 2203 kg/ha among the Bt cotton hybrids. Pooled data of seed cotton yield revealed that twohybrids viz., MRC 7347 BG II (2203 kg/ha) and ACH 177-2 BG II (2054 kg/ha) recorded numerically superior seedcotton yield over the check, MRC-7351 BG-II (2053 kg/ha). The data on 2.5 per cent span length ranged from 29.2mm to 33.6 mm, while the fibre strength of the hybrids ranged from 21.7 g/tex to 23.9 g/tex. Fibre fineness ormicronaire value ranged from 3.9 to 4.6 Bg/inch. None of the hybrids were found to be stable across all the testenvironments indicating the need to undertake extensive testing of Bt cotton hybrids for recommending regionspecific hybrids possessing high yielding potential coupled with desirable fibre quality parameters
Effect of glass-ionomer cement as an intra-canal barrier in post space prepared teeth: An in vitro study
Vijay Rajakumar,Indira R
Journal of Conservative Dentistry , 2009,
Abstract: Aim: To evaluate the bacterial microleakage across remaining Gutta-percha in teeth prepared for post space with and without the use of an intracanal glass ionomer barrier. Materials and Methods: Forty freshly extracted intact human mandibular premolars with single canal were instrumented, obturated with Gutta-percha and AH plus sealer and post spaces were created. Teeth were assigned into experimental groups as follows: Group I - 3 mm of Gutta-percha, Group II - 4 mm of Gutta-percha, Group III - 3 mm of Gutta-percha with 1 mm of Vitrebond as barrier, Group IV -4 mm of Gutta-percha with 1mm of Vitrebond as barrier. The roots were suspended in Rogosa SL broth and 50 μl of lyophilized Lactobacilli Casei was inoculated as the microbial marker. The mean days taken for the broth to turn turbid were tabulated. The values were statistically analyzed using one way ANOVA and Tukey′s HSD test. Results: At the end of 64 days, the mean and standard deviation of the number of days for the broth to turn turbid was: Group I - 20.50, (SD - 3.96). Group II - 25.43, (SD - 4.83), Group III - 38.63, (SD - 9.36), and Group IV - 53.50, (SD - 11.15) Conclusion: Vitrebond could be used as an intracanal barrier to provide a superior coronal seal in teeth requiring post and core.
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