382 research outputs found

    Unsteady 3D MHD Carreau and Casson Fluids over a Stretching Sheet with Non-Uniform Heat Source/Sink

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    In this study, we analyzed the effects of nonlinear thermal radiation and non-uniform heat source/sink on an unsteady three-dimensional flow of Carreau and Casson fluid past a stretching surface. The transformed governing equations are solved numerically using Runge-Kutta based shooting technique. We obtained better accuracy of the present results by comparing with the already published literature. The influence of dimensionless parameters on velocity and temperature profiles along with the friction factors, local Nusselt and Sherwood numbers are discussed with the help of graphs and tables. We presented dual nature solutions for the flow over a Carreau and Casson fluid cases. It is also found that the non-uniform heat source or sink is control the thermal boundary layer for both the Casson and Carreau fluid cases. Keywords: MHD, unsteady, nonlinear thermal radiation, Carreau fluid, Casson fluid, 3D

    Induced Magnetic Field on Williamson Fluid Past a Stretching Surface with Nonlinear Thermal Radiation and Non-Uniform Heat Source or Sink

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    In this study, we investigated the effects of induced magnetic field and nonlinear thermal radiation on Williamson nano fluid past a stretching surface in the presence of non-uniform heat source/sink. The transformed governing equations are solved numerically using Runge-Kutta based shooting technique. We acquire better accuracy of the present results by comparing with the published literature. The influence of dimensionless parameters on velocity, temperature and concentration profiles along with the friction factor coefficient, the heat transfer rate and the mass transfer rate are discussed with the help of graphs and tables. It is found that the heat transfer rate in Williamson fluid is high while compared with the Base fluid. Keywords: Induced magnetic field, stretching sheet, nonlinear thermal radiation, non-uniform heat source/sink, Williamson fluid

    Certain Subclasses Of Harmonic Starlike Functions Associated With q-Analouge Of Ruscheweyh Operator

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    In this work, we introduce and study a subclass of harmonic uniformly β - starlike functions defined by q-analogue of Ruscheweyh derivative operator. Coefficient bounds, extreme points, distortion bounds, convolution conditions and convex combination are determined for functions in this class. Also, properties of the class preserving under. The generalized Bernardi-Libera –Livingston integral operator and the q-Jackson integral operator are discussed. Furthermore, many of our results are either extensions or new approaches to those corresponding to previously known results

    Management of Optic Neuritis in Ayurveda - A Special Case Report

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    The optic nerve carries visual information from your eye to your brain. Optic neuritis is when your optic nerve becomes inflamed. Optic neuritis can flare up suddenly from an infection or nerve disease. The inflammation usually causes temporary vision loss that typically happens in only one eye. Those with Optic neuritis sometimes experience pain. As you recover and the inflammation goes away, your vision will likely return. There are no direct references in our classics regarding optic neuritis but can be contemplated as a condition by name Parimlayi Timira. The specific management as such is not cited but a transcendence approach can be done with adopting the treatment which has the ability to pacify the already occurred pathology and prevent the further development of the disease. One such interesting case study on Optic neuritis is elaborated here where in specific treatment modalities (Shodana, Shamana and Kriyakalpas) played role in pacifying the condition

    A Survey of Energy Harvesting Sources for IoT Device

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    Environmental Energy is an alternative energy for wireless devices. A Survey of Energy Harvesting Sources for IoT Device is proposed. This paper identifies the sources of energy harvesting, methods and power density of each technique. Many reassert have carried to extract energy from environment. The IoT and M2M are connected through internet or local area network and these devices come with batteries. The maintenance and charging of batteries becomes tedious due to thousands of device are connected. The concept of Energy harvesting gives the solution for powering IoT, M2M, Wireless nodes etc. The process of extracting energy from the surrounding environment is termed as energy harvesting and derived from windmill and water wheel, thermal, mechanical, solar

    A Comprehensive Analysis of Nidana for Netra Rogas as explained by different Ayurveda instigators in the specific context of Netra Shalakya

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    Ayurvedic way of diagnosis has two basic components mainly Rogapariksha and Rogipariksha. Among them Rogapariksha gives us the detailed knowledge about a disease starting from the etiological aspects to the actual manifestion of disease. The five basic components of Rogapariksha are Nidana, Purvarupa, Rupa, Samprapti and Upashaya, which are collectively known as Nidana Panchakas. Nidana, the foremost component among them not only gives the knowledge of causative factors but also helps in treatment by avoiding them. Among all the Indriyas, Netra is said to be Pradhana, thus a special care and concern should be taken to protect it. Understanding the strength of the causative factors for eye diseses will help to execute the treatment appropriately and maintain the healthy vision. Thus an attempt is made to analyse the Netra Roga Nidana in this presentation

    Stochastic Model and Computational Measures of Batch Process Queuing System with Hetero Multiservers

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    Multiprocessor system models at present are very important and widely used in modelling transaction processing systems, communication networks, mobile networks, and flexible machine shops with groups of machines. Heterogeneous processors system with one main server and several identical servers are studied. In this paper, reconfiguration and rebooting delays are considered to study the performance measures for both bounded and unbounded system. Numerical results are presented for various performability parameters

    Profile and outcome of pregnancy with congenital heart diseases: a retrospective study from a South Indian tertiary care hospital

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    Background: Women with congenital heart disease who become pregnant form an important subgroup of pregnancy cardiac disorders. The additional stress of pregnancy represents a further challenge.Methods: This was a retrospective study. Patient records between 2011and 2015 pertaining to 77 pregnant women with congenital heart diseases were analysed.Results: There was only one patient aged more than 35 years. The age of the others ranged from 18 to 35 years. The mean age was 24 years. There was a slight rural preponderance with 43 (55.8%) from rural areas. Majority 49 (63.5%) belonged to lower middle socioeconomic status. 71 (92.2%) had NYHA functional Class I. Two patients of Class II had worsening of their status. There were no cases of Atrial Fibrillation and only 2(2.6%) had CCF.ASD closure was the commonest procedure done24 (31.2%). There were 6 (7.8%)cases of device closure of PDA and no cases of VSD. Anemia and GDM were seen in 4 (5.2%). The commonest period of gestation at delivery was 37-40 in 64 (83.1%). ASD was the commonest type of lesion 42 (54.5%). 36 (46.8%) had spontaneous labour and there were 18 23.4%)caesarians. Previous LSCS was the commonest indication for LSCS. Full term normal vaginal delivery was seen in 45 (88.2%). Majority of the newborns 30 (39%) had a birth weight in the range 2.6-3.0 kgs.Conclusions: There is a significant burden of Heart disease with pregnancy afflicting young rural women and those from lower socioeconomic levels. Higher level of specialised care minimizes poor maternal and fetal outcomes

    Maternal and fetal outcome of febrile morbidity in pregnancy at tertiary care level

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    Background: Fever in pregnancy is a common clinical problem worldwide. Effects of hyperthermia depends on the extent and duration of temperature elevation, timing of exposure in pregnancy and possibly on maternal nutritional status, comorbidities, medications, socio-economic background and several other factors. The exposure of maternal temperature has been reported to lead to cell disruptions, vascular disturbance and placental infarction which can lead to the risk of structural and functional defects in progeny. The underlying maternal cytokine polymorphism is strongly associated with both intrapartum fever and neonatal outcome. Hence there is a need to detect the various life-threatening medical complications of febrile morbidity leading to severe maternal morbidity and its impact on fetal outcome. Aim of study were to study the etiology of fever in pregnancy during the study period and to know the effect of fever on both the mother and the fetus. Methods: A prospective observational study. Results: Out of the 60 cases of fever in pregnancy, most common cause of fever was urinary tract infection (30%), followed by dengue fever (25%) and upper respiratory tract infection (23.3%). Fever was associated with complications as such PROM, PPROM, preterm labour, PPH, thrombocytopenia, anemia and abortions. Fetal outcome were preterm birth (25%), low birth weight (36%), neonatal sepsis (20%) and perinatal death (13.8%). Conclusions: Febrile morbidity in pregnancy leads to numerous maternal and fetal complications can occur due to fever in pregnancy from various causes. The most common cause of fever was UTI followed by dengue fever. The maternal and fetal complications can be avoidable if the cause for the fever is diagnosed and treated early
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