CLINICAL COMPARATIVE STUDY IN THE MANAGEMENT OF KASHTARTAVA W.S.R. PRIMARY DYSMENORRHOEA WITH RUTUKARI VATI AND KUMARYASAVA

Adolescence is the rapid growing period when mainly the physical changes are important. 95% girls attain menarche at the age group of 10 to 16 yrs, the peak being 13yrs. Among them, not less than 50% of female are said to experience some discomfort or pain in relation to menstruation. Kashtartava is a symptom mentioned in various Yoni vyapads, Vata being the main causative factor for this condition, which is commonly compared with dysmenorrhoea by cotemporary science. Conventional treatment of primary dysmenorrhoea consists of non-steroidal and anti-inflammatory drugs, hormonal therapy which causes unwanted side effects. Hence Rutukari Vati which is mentioned in Bheshaja Samhita for Kashtartava having the properties like, Vedanashamaka, Arthavajanana have been selected for the planned study. Design of Study: A Single blind comparative clinical study of two groups, trial and control, consisting of 15 subjects in each with pre-test and post-test design. Group A was given Rutukarivati and Group B was given Kumaryasava 25ml twice daily after food. Result: Rutukarivati contains most of the drugs with Tiktha and Katu rasa, Usnaveerya property and Vatakaphahara property; it is effective in controlling pain and regularizing the cycle. On comparison of overall effect of both groups has more significant result but percentage wise group A is more effective than group B. Mild increase in amount of bleeding was noted in patients in group A. It may be because of most of the ingredients in Rutukarivati are Artavajanana and Apanavatashaman. &nbsp

Growth of CaF2 buffer on Si using low energy cluster beam deposition technique and study of its properties

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Looking Beyond Inflationary Cosmology

In spite of the phenomenological successes of the inflationary universe scenario, the current realizations of inflation making use of scalar fields lead to serious conceptual problems which are reviewed in this lecture. String theory may provide an avenue towards addressing these problems. One particular approach to combining string theory and cosmology is String Gas Cosmology. The basic principles of this approach are summarized.Comment: invited talk at "Theory Canada 1" (Univ. of British Columbia, Vancouver, Canada, June 2 - 4, 2005) (references updated

Features of heavy physics in the CMB power spectrum

The computation of the primordial power spectrum in multi-field inflation models requires us to correctly account for all relevant interactions between adiabatic and non-adiabatic modes around and after horizon crossing. One specific complication arises from derivative interactions induced by the curvilinear trajectory of the inflaton in a multi-dimensional field space. In this work we compute the power spectrum in general multi-field models and show that certain inflaton trajectories may lead to observationally significant imprints of `heavy' physics in the primordial power spectrum if the inflaton trajectory turns, that is, traverses a bend, sufficiently fast (without interrupting slow roll), even in cases where the normal modes have masses approaching the cutoff of our theory. We emphasise that turning is defined with respect to the geodesics of the sigma model metric, irrespective of whether this is canonical or non-trivial. The imprints generically take the form of damped superimposed oscillations on the power spectrum. In the particular case of two-field models, if one of the fields is sufficiently massive compared to the scale of inflation, we are able to compute an effective low energy theory for the adiabatic mode encapsulating certain relevant operators of the full multi-field dynamics. As expected, a particular characteristic of this effective theory is a modified speed of sound for the adiabatic mode which is a functional of the background inflaton trajectory and the turns traversed during inflation. Hence in addition, we expect non-Gaussian signatures directly related to the features imprinted in the power spectrum.Comment: 41 pages, 6 figures, references updated, minor modifications. Version to appear in JCAP. v4: Equations (4.28) and (4.30) and Figures 5 and 6 correcte

Unconventional Cosmology

I review two cosmological paradigms which are alternative to the current inflationary scenario. The first alternative is the "matter bounce", a non-singular bouncing cosmology with a matter-dominated phase of contraction. The second is an "emergent" scenario, which can be implemented in the context of "string gas cosmology". I will compare these scenarios with the inflationary one and demonstrate that all three lead to an approximately scale-invariant spectrum of cosmological perturbations.Comment: 45 pages, 10 figures; invited lectures at the 6th Aegean Summer School "Quantum Gravity and Quantum Cosmology", Chora, Naxos, Greece, Sept. 12 - 17 2012, to be publ. in the proceedings; these lecture notes form an updated version of arXiv:1003.1745 and arXiv:1103.227

Naked Singularity Formation In f(R) Gravity

We study the gravitational collapse of a star with barotropic equation of state $p=w\rho$ in the context of $f({\mathcal R})$ theories of gravity. Utilizing the metric formalism, we rewrite the field equations as those of Brans-Dicke theory with vanishing coupling parameter. By choosing the functionality of Ricci scalar as $f({\mathcal R})=\alpha{\mathcal R}^{m}$, we show that for an appropriate initial value of the energy density, if $\alpha$ and $m$ satisfy certain conditions, the resulting singularity would be naked, violating the cosmic censorship conjecture. These conditions are the ratio of the mass function to the area radius of the collapsing ball, negativity of the effective pressure, and the time behavior of the Kretschmann scalar. Also, as long as parameter $\alpha$ obeys certain conditions, the satisfaction of the weak energy condition is guaranteed by the collapsing configuration.Comment: 15 pages, 4 figures, to appear in GR