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Search Results: 1 - 10 of 206892 matches for " Gupta P "
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Static and Dynamic Components of the Redshift  [PDF]
Rajendra P. Gupta
International Journal of Astronomy and Astrophysics (IJAA) , 2018, DOI: 10.4236/ijaa.2018.83016
Abstract: We analyse the possibility that the observed cosmological redshift may be cumulatively due to the expansion of the universe and the tired light phenomenon. Since the source of both the redshifts is the same, they both independently relate to the same proper distance of the light source. Using this approach we have developed a hybrid model combining the Einstein de Sitter model and the tired light model that yields a slightly better fit to Supernovae Ia redshift data using one parameter than the standard ΛCDM model with two parameters. We have shown that the ratio of tired light component to the Einstein de Sitter component of redshift has evolved from 2.5 in the past, corresponding to redshift 1000, to its present value of 1.5. The hybrid model yields Hubble constant H0 =69.11(±0.53)km·s-1 ·Mpc-1 and the deceleration parameter q0 =-0.4. The component of Hubble constant responsible for expansion of the universe is 40% of H0 and for the tired light is 60% of H0. Consequently, the critical density is only 16% of its currently accepted value; a lot less dark matter is needed to make up the critical density. In addition, the best data fit yields the cosmological constant density parameter \"\" =0. The tired light effect may thus be considered equivalent to the cosmological constant in the hybrid model.
Ambroxol - Resurgence of an old molecule as an anti-inflammatory agent in chronic obstructive airway diseases
Gupta P
Lung India , 2010,
Abstract:
Operational problems and suggestions for improvement in functioning of DOTS at medical college hospitals in India (Experience of a medical college teacher)
Gupta P
Lung India , 2006,
Abstract:
Asthma in the obese: Yet another reason to lose weight
Gupta P
Lung India , 2008,
Abstract:
Difficulties in managing lymph node tuberculosis
Gupta P
Lung India , 2004,
Abstract:
Social Media Marketing by Pharmaceutical Industry: Perception and Attitudes of Key Stakeholders
P Gupta
Business and Economics Journal , 2011,
Abstract: The purpose of the study is to assess the perception, attitudes and behavior of the key target consumer groups – doctors and patients, regardingsocial media marketing by pharmaceutical industry. It is a cross-sectional, questionnaire-based study done in 2 groups – 50 general practitionersand 250 patients, in Navi Mumbai (India) area, selected by random sampling. The results highlighted that the awareness and acceptance of theconcept of social media marketing was high amongst both the doctors and the patients. Amongst doctors, it is positively and significantlyassociated with young age and having a postgraduate degree after MBBS. Amongst the patients, a high proportion take self medication based onreference to the internet, most common ailments for use of self medication being aches, respiratory illnesses and gastrointestinal illnesses. Theincreasing positive response of the key consumer groups, especially in the young age group, makes social media a powerful marketing tool, whichcan be explored by the pharmaceutical industry.
Knocking the doors of residency
P Gupta
Journal of Kathmandu Medical College , 2012, DOI: 10.3126/jkmc.v1i2.8151
Abstract: DOI: http://dx.doi.org/10.3126/jkmc.v1i2.8151 Journal of Kathmandu Medical College, Vol. 1, No. 2, Oct.-Dec., 2012: 121-122
Infrared coagulation versus rubber band ligation in early stage hemorrhoids
Gupta, P.J.;
Brazilian Journal of Medical and Biological Research , 2003, DOI: 10.1590/S0100-879X2003001000022
Abstract: the ideal therapy for early stages of hemorrhoids is always debated. some are more effective but are more painful, others are less painful but their efficacy is also lower. thus, comfort or efficacy is a major concern. in the present randomized study, a comparison is made between infrared coagulation and rubber band ligation in terms of effectiveness and discomfort. one hundred patients with second degree bleeding piles were randomized prospectively to either rubber band ligation (n = 54) or infrared coagulation (n = 46). parameters measured included postoperative discomfort and pain, time to return to work, relief in incidence of bleeding, and recurrence rate. the mean age was 38 years (range 19-68 years). the mean duration of disease was 17.5 months (range 12 to 34 months). the number of male patients was double that of females. postoperative pain during the first week was more intense in the band ligation group (2-5 vs 0-3 on a visual analogue scale). post-defecation pain was more intense with band ligation and so was rectal tenesmus (p = 0.0059). the patients in the infrared coagulation group resumed their duties earlier (2 vs 4 days, p = 0.03), but also had a higher recurrence or failure rate (p = 0.03). thus, we conclude that band ligation, although more effective in controlling symptoms and obliterating hemorrhoids, is associated with more pain and discomfort to the patient. as infrared coagulation can be conveniently repeated in case of recurrence, it could be considered to be a suitable alternative office procedure for the treatment of early stage hemorrhoids.
Radioablation and suture fixation of advanced grades of hemorrhoids: An effective alternative to staplers and Doppler guided ligation of hemorrhoids
Gupta,P. J.;
Revista Espa?ola de Enfermedades Digestivas , 2006, DOI: 10.4321/S1130-01082006001000003
Abstract: background: for advance grades of symptomatic hemorrhoids (grade iii and iv) the author has innovated a procedure called radiofrequency ablation and fixation of hemorrhoids. the procedure is performed as a day care surgery. patients and methods: the surgical technique and clinical follow-up of patients operated by this technique are presented. an ellman dual frequency radiofrequency generator was used for ablation, which was followed by suture fixation of the hemorrhoids. patient satisfaction score was assessed using a visual analogue scale. the results of this procedure are presented and are compared with the results of published data of stapled hemorrhoidopexy and doppler guided hemorrhoidal artery ligation procedures. results: between 1998 and 2005, 2,376 patients were operated with this technique. patient's mean age was 34 years and 1,438 patients were males. the postoperative complication rate was 3.5%, which included secondary bleeding, retention of urine and perianal thrombosis. the recurrence rate was less than 1.5%. the satisfaction score was 9.2 on vas. conclusions: radiofrequency ablation and fixation of hemorrhoids is a technique that results in less postoperative pain, shorter hospital stay, and early return to normal activity. it seems to be a better alternative to stapled hemorrhoidopexy or doppler guided hemorrhoidal artery ligation with regard to effectiveness and symptomatic relief on long term.
Double-diffusive convection of compressible rotating Walters’ (B′) fluid with Hall currents saturating a porous medium
P Aggarwal, U Gupta
International Journal of Engineering, Science and Technology , 2012,
Abstract: Keeping in view the conflicting tendencies of rotation and Hall currents (magnetic field) while acting together; combined effects of Hall currents and rotation are considered on the hydromagnetic stability of a compressible Walters’ (Model B′) elastico-viscous fluid heated and soluted from below saturating a porous medium. Boussinesq approximation is used to simplify the complex hydromagnetic equations and the perturbation equations are analyzed in terms of normal modes. A dispersion relation governing the effects of visco-elasticity, salinity gradient, rotation, Hall currents and medium permeability is derived. It has been found that for stationary convection, Walters’ (Model B′) fluid behaves like an ordinary Newtonian fluid due to the vanishing of the visco-elastic parameter. Compressibility, solute gradient, rotation and magnetic field postpone the onset of instability as such their effect is to stabilize the system. Hall currents and medium permeability are found to hasten the onset of instability for permissible range of values of various parameters. The dispersion relation is analyzed numerically and the effects of various parameters for permissible range of values are depicted graphically. The visco-elasticity, solute gradient and Hall currents (hence magnetic field) introduce oscillatory modes in the system which were non-existent in their absence. Also the case of overstability is discussed and sufficient conditions for the non-existence of overstability are derived.
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