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RISS 인기검색어
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- 저자 : Rajmohan (검색결과 8 건)
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Panda, Rajmohan,Persai, Divya,Mathur, Manu,Sarkar, Bidyut Kanti Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.12
Background: Smokeless tobacco use in South Asia is believed to be a significant contributor to morbidity and mortality. In India, only a few studies involving health educational intervention by health care providers have demonstrated reduction in smokeless tobacco usage. In the present study we assessed the cessation efforts towards smokeless tobacco by physicians in two high tobacco prevalence states of India. The study also identified opportunities and barriers for integration of tobacco cessation services in routine practices of physicians. Materials and Methods: This mixed method study involved qualitative (phase I) and quantitative research study (phase II). In phase I, 59 in-depth interviews with physicians were conducted. In phase II, a quantitative study conducted among 238 physicians. An inductive approach was followed to analyze qualitative data using ATLAS. Ti software. The Chi-square test was employed to test the association between different variables of interest using SPSS version 17. Results: The majority of physicians related only respiratory problems and cancer with smokeless tobacco. Other major health effects like cardio-vascular problems, oral diseases, and effects on reproductive and neonatal health were recognized only by a few physicians. The age-group of 10-19 years was identified as most vulnerable to smokeless tobacco use. Less than one-third of physicians reported recording smokeless tobacco history of all patients. Findings indicated that less than half of physicians provided information on harmful health effects of smokeless tobacco with regard to specific diseases. Conclusions: The study revealed a low level of knowledge of physicians about harmful effects of tobacco and their suboptimal engagement in tobacco control practices. The study indicates the need of capacity building initiatives to equip physicians with skills in tobacco cessation.
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Panda, Rajmohan,Mathur, Manu Raj,Divya, Persai,Srivastava, Swati,Ramachandra, Srikrishna Sulgodu Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.12
Introduction: Andhra Pradesh (AP) is one of the largest tobacco producing states in India. About 29% of adults in AP currently use tobacco in some form. Almost 24% of males and 4% of females are smokers. The prevalence of tobacco use in the state is higher than the national average of 15% for male and 2% for female smokers. However, few attempts have been made to understand the current situation of tobacco control resources, activities and strategies in the context of such a high tobacco prevalence state. The present study aimed to identify the gaps in existing tobacco control program and areas where tobacco control efforts can be integrated. Methods: Data were collected using both quantitative and qualitative methods. Semi-structured interviews were undertaken with a total of 95 key officials of state health departments, program managers, and project directors in six districts to understand ongoing tobacco control efforts. To facilitate the interviews, semi-structured guides were developed. Simple descriptive statistical analysis was conducted on the quantitative data using SPSS version 17. Results: The results of the situational analysis suggest that a sufficient health workforce and infrastructure with the potential to integrate tobacco control activities is available in the surveyed districts. However, lack of integration of the tobacco control program intothe tuberculosis control program and the National Rural Health Mission was observed. Information, education and communication activities were lacking at block level health facilities. Conclusions: Our findings indicate that lack of trained health professionals, paucity of dedicated funds, lack of information, education and communication materials and low priority given to tobacco control activities are some of the factors which impede integration of tobacco control into existing health and developmental programmes in the districts of Andhra Pradesh, India.
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Rajendiran, Rajmohan,Nallal, Muthuchamy,Park, Kang Hyun,Li, Oi Lun,Kim, Hee-Je,Prabakar, Kandasamy Pergamon Press 2019 Electrochimica Acta Vol. No.
<P><B>Abstract</B></P> <P>It is highly essential to produce cost-effective and efficient multifunctional porous carbon materials for sustainable energy technologies. Here, we report a facile approach to synthesis biomass derived porous carbon having inherited heteroatoms by mechanochemical method and post pyrolyzing treatment. The optimized porous carbon exhibits superior oxygen reduction reaction performances in an alkaline electrolyte with a half-wave potential of 0.76 V (vs. reversible hydrogen electrode) with a small kinetic current density of 35.5 mV dec<SUP>−1</SUP> and outsanding stability with great tolerance against methanol poisoning. It also shows the multifunctional capability of electrochemical energy storage as supercapacitor electrode material (coin cell), showing high gravimetric capacitance of 273 F g<SUP>−1</SUP> in the aqueous electrolyte with superior cycling stability.</P>
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Selvaraj, Aravindha Raja,Rajendiran, Rajmohan,Chinnadurai, Deviprasath,Rajendra Kumar, Gunasekaran,Kim, Hee-Je,Senthil, Karuppanan,Prabakar, Kandasamy Elsevier 2018 ELECTROCHIMICA ACTA Vol.283 No.-
<P><B>Abstract</B></P> <P>One dimensional manganese oxides with tunnel structures have attracted as an effective electrochemical energy storage material because of its efficient electrolyte/cation interfacial charge transports which enables improved pseudo capacitive performance. We have reported a simple one step hydrothermal technique to incorporate K<SUP>+</SUP> ions to maintain the tunnel width of cryptomelane α-MnO<SUB>2</SUB> nanowires during cycling performance. The effects of K<SUP>+</SUP> ions on the electrochemical performance is studied by tuning the phases of α-KMnO<SUB>2</SUB> nanowires to Mn<SUB>3</SUB>O<SUB>4</SUB> through an intermediate phase of Mn<SUB>2</SUB>O<SUB>3</SUB> by subsequent calcinations at various temperatures. K<SUP>+</SUP> ions doped α-MnO<SUB>2</SUB> nanowires exhibit a highest specific capacitance of 402 Fg<SUP>-1</SUP> at a current density of 1 Ag<SUP>-1</SUP> in 1 M Na<SUB>2</SUB>SO<SUB>4</SUB> electrolyte solution compared to Mn<SUB>2</SUB>O<SUB>3</SUB> and Mn<SUB>3</SUB>O<SUB>4</SUB>. The as synthesized α-KMnO<SUB>2</SUB> nanowires have a wider tunnel widths and enriched OH radical species and hence the electrolyte cations (Na<SUP>+</SUP>) penetrate the tunnels very easily resulting the polarization enhanced intercalation pseudo capacitance. The symmetric α-KMnO<SUB>2</SUB> nanowire supercapacitor device shows very high energy density (15.83 Wh kg<SUP>−1</SUP>), power density (128.35 W kg<SUP>−1</SUP>) and excellent cyclic stability with 88% retention of the initial capacitance after 3000 cycles.</P>
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A. Arun Premnath,T. Alwarsamy,T. Rajmohan,R. Prabhu 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.11
We consider the influence of alumina (Al2O3) particles on mechanical and tribological properties of aluminum hybrid metal matrixcomposites (MMC). Various weight fraction of Al2O3 (5, 10 and 15%) and constant weight fraction of graphite (5%) were used to fabricatecomposites by stir casting method. The effect of Al2O3 content on hardness, density and specific wear rate is evaluated. A wear testwas performed using central composite design matrix on a pin-on disc apparatus at room temperature for constant sliding distance of1000 m. The sliding speed, load and weight fraction of Al2O3 were the process variables. The results show that the hardness and densityincrease with increase in Al2O3 content. From the analysis of variance (ANOVA), load is the dominant factor that affects the specificwear rate of hybrid composites followed by speed and weight fraction of Al2O3. Based on desirability approach, the improvement in thewear resistance of the composites became more prominent at high speed, high load and high weight fraction of Al2O3. The worn surfaceof the pin was examined using scanning electron microscope (SEM) which indicates that the wear mechanism of composites is mostlyabrasive wear followed by oxide wear.
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Versatility of Modified Nasolabial Flap in Oral and Maxillofacial Surgery
Geeti Vajdi Mitra,Sarwpriya Sharma Bajaj,Sushmitha Rajmohan,Tejas Motiwale 대한두개안면성형외과학회 2017 Archives of Craniofacial Surgery Vol.18 No.4
Background: To evaluate the versatility and reach of modified nasolabial flap used in reconstruction of defects created in and around the oral cavity. Methods: A total number of 20 cases were selected. Out of which 13 were males and 7 females. The age of these patients ranged from 24–63 years. 29 modified nasolabial flaps were raised in twenty patients. Based on clinical and histopathological examination, out of 20 patients, 14 patients were diagnosed with oral submucous fibrosis, 3 with verrucous carcinoma, 1 with squamous papilloma, 1 with oro-antral fistula and 1 with traumatic loss of lower lip. Results: Minimum preoperative interincisal distance (IID) was 0 mm and maximum was 15 mm with mean of 6.00±4.76 mm in patients with oral submucous fibrosis and 12 months postoperatively minimum IID was 16 mm and maximum was 41 mm with mean of 28.00±8.96 mm. In one case, dehiscence (3.4%) was noted on the anterior tip for which tip revision was done. Bulky appearance of the flap intraorally was observed in 2 cases (6.9%). Five (17.2%) among the 29 flaps had visible scar at the donor site postoperatively up to 3 months. Conclusion: Numerous reconstructive techniques have been employed in the reconstruction of small to intermediate sized defects of oral cavity. Modified nasolabial flap is a versatile flap which has robust vascularity and can be successfully used with minimal complications. It can be rotated intraorally to extend from the soft palate to the lip. Thus, it can be used efficiently to treat the small defects of the oral cavity as well as recreating lost lip structure.
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M. Santhanakumar,R. Adalarasan,M. Rajmohan 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.1
The abrasive mixed waterjet was successfully employed to cut many materials including austenitic steel, inconel and glass for a varietyof industrial applications. The present work focusses on studying the surface roughness, striation zone and striation angle in Abrasivewaterjet cutting (AWJC) of Al/SiC/Al2O3 composite. The water pressure, traverse speed, abrasive flow rate and stand-off distance wereincluded as the dominant parameters in the study. The features of striation zone (length and angle) and surface roughness were observedas the responses for each of the cutting trials planned as per Taguchi’s L18 orthogonal array. Parameter design was performed using thegrey theory based response surface methodology (g-RSM) by following the method of simultaneous optimization to forecast the optimalcutting condition. All the studied parameters and their interactions were found to have a substantial effect on the observed responses. Significant improvements were observed in the responses obtained with the optimal parameter setting predicted by the g-RSM approach. The Atomic force microscopy (AFM) images and P-profile plots were also studied to observe the texture of the cut surface.
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