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RISS 인기검색어
- 검색키워드
- 저자 : G. Ramya (검색결과 5 건)
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Predictors of Cigarette Smoking among Young Adults in Mangalore, India
Lalithambigai, G,Rao, Ashwini,Rajesh, G,Ramya, Shenoy,Pai, BH Mithun Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.1
Background: The tobacco epidemic is a heralding health menace, particularly among college students. Tobacco usage among young can have an especially devastating effect as they can be exposed for longer periods. Data to estimate the prevalence of tobacco use in young adults will be a valuable addition to the existing resources. Materials and Methods: An analytical cross-sectional study was therefore carried out in Mangalore city using a pre-tested, self-administered questionnaire adapted from the Global Youth Tobacco Survey (GYTS) with a representative sample of 720 students aged 18-20 years selected from degree colleges by multi-stage random sampling. Results: Prevalence of 'ever users' and 'current users' of smoking were 20.4% and 11.4%, respectively. The mean age at initiation of cigarette smoking was 16 years and the majority (31 %) smoked in public places. Interestingly, 84% of them knew about the harmful effects of cigarette smoking. About one half of smokers had some or most of their friends smoking. Multivariate analysis revealed gender (OR=8.585: CI-3.26-22.5), pocket money (OR=4.165; CI=1.76-9.82) and peer's smoking habit (OR= 5.15; CI-2.21-11.9) have higher odds as correlates of tobacco usage among college students. Conclusions: It is of prime importance to highlight the role of prevention of smoking initiation rather than subsequently trying to stop the habit. Comprehensive interventions embracing family, friends and social milieu are needed to reduce tobacco use among students in India.
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Numerical Simulation of Inertial Based PDMS Microchannel for Blood Cell Sorting
S. Ramya,S. Praveen Kumar,G. Dinesh Ram,D. Lingaraja 한국전기전자재료학회 2023 Transactions on Electrical and Electronic Material Vol.24 No.5
Inertial focusing of particles in curved channels has much potential for lab-on-a-chip applications. For high-throughput cell sorting, inertial microfluidic channels with a spiral cross-section have been used, using the vortex assumption of two opposing Dean vortices. Using the Navier-Stokes equation as a basis, this investigation employs a numerical simulation of the flow dynamics to examine the trajectories of particles and the fluid velocity profile in the curved channels. Variations in flow rate, Reynolds number, and particle size are examined to see how they affect the performance of the focusing forces and the competition between them. Human blood has three main cell types: red blood cells (RBCs), white blood cells (WBCs), and platelets. By adjusting the flow rate and maintaining it along the spiral microchannel, these cells of sizes (15 μm, 6 μm and 2 μm) are separated more effectively. The high flow rate of about 4.5 mL/min is achieved for the planned 6 turn spiral microcfluidic device to reach its maximum separation efficiency. This work reimagines the role of Dean flows in cell focusing at high flow rates, which may one day allow for more effective separations of blood cells at ultra-high throughputs.
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V.Saranya,S.Ramya,R.G. Suresh Kumar,T.Nalini 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.3
Cloud computing is a technology in which the Cloud Service Providers (CSP) provide many virtual servers to the users to store their information in the cloud. The faults occurring on the assignment and dismission of the virtual machines, the processing cost in the allocation of resources must also be considered. The parallel processing of the information on the virtual machines must be done effectively and in an efficient manner. A variety of systems were developed to facilitate Many Task Computing (MTC). These systems aim to hide the issues of parallelism and fault tolerant and they are used in many applications. In this paper, we introduced Nephele, a data processing framework to exploit dynamic resource provisioning offered by IaaS clouds. The performance evaluation of the virtual machines has been evaluated and the allocation and de-allocation of job tasks to the specific virtual machines has also been considered. A performance comparison with the well known data processing framework hadoop has been done. Thus this paper tells about the effective and efficient manner of processing the data by parallel processing and allocating the correct resources for the desired task. It also helps to reduce the cost of resource utilization by exploiting the dynamic resource utilization.
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Vijayalakshmi D.,Priya J. Ranjani,Vinitha A.,Ramya G. 한국작물학회 2024 Journal of crop science and biotechnology Vol.27 No.1
Increase in carbon-dioxide (CO2) concentration along with increase in temperature and drought has significant impact on the crop production. Thus, the aim of the study was to investigate the individual and interactive effects of elevated CO2 (800 ppm), drought (50% field capacity) and heat (40 °C) on gas exchange parameters, membrane integrity, reproductive physiology and yield of two C3 (Rice, Green gram) and two C4 (Maize, Ragi) crop species. Stress treatments, viz., T1: a [CO2] + a T + irrigation (100%), T2: a [CO2] + a T + irrigation (50%), T3: a [CO2] + e T (40 °C) + irrigation (100%), T4: e [CO2] – 800 ppm + a T + irrigation (100%), T5: a [CO2] + combined stress [e T (40 °C) + irrigation (50%) T6: e [CO2] – 800 ppm + combined stress [e T (40 °C) + irrigation (50%)] were given for 21 days from initiation of flowering. Drought and heat increased stomatal frequency and reduced stomatal area. CO2 enrichment decreased stomatal frequency with greater photosynthetic rate (13.65%) in green gram and rice (10.91%) coupled with reduced transpiration rates. Stresses led to increased malondialdehyde contents. Higher CO2 environments improved pollen viability and pollen germination. Percent increase in yield of rice (15.34) and green gram (16.58) was higher than maize (6.52) and ragi (6.01) with enriched CO2
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Burnishing of Al (SiC)p metal matrix composites using TiAlN coated roller
E. Shankar,M. R. Stalin John,C. Devanathan,G. Ramya 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.7
Roller burnishing involves plastic deformation by pressing a hard roller against the workpiece. The number of passes, rotational speed of the workpiece and type of lubricant were taken as input parameters. Its effect on surface roughness and surface hardness during burnishing of Al(SiC)p workpiece material was studied. Titanium aluminium nitride (TiAlN) coating was given to the WC rollers with PVD coating and its effects were studied. Roller burnishing of Al(SiC)p MMC can reduce the surface roughness up to 78.84 % and increase surface hardness up to143.4 %. Based on the extrapolated results it is noted that coated rollers under dry conditions produce low surface finish and high hardness.
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