1,050 research outputs found

    Dynamic Density Response of Trapped Interacting Quantum Gases

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    An expression for the dynamic density response function has been obtained for an interacting quantum gas in Random Phase Approximation (RPA) including first order self and exchange contribution. It involves the single particle wave functions and eigen values. The expression simplifies when diagonal elements are considered. The diagonal elements of the imaginary part of Fourier transformed response function is relevant in the measurement of Bragg scattering cross-section and in several other applications.Comment: 2 pages, 0 figure, conferenc

    Dependence of structure factor and correlation energy on the width of electron wires

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    The structure factor and correlation energy of a quantum wire of thickness b≪aBb\ll a_B are studied in random phase approximation and for the less investigated region rs<1r_s<1. Using the single-loop approximation, analytical expressions of the structure factor have been obtained. The exact expressions for the exchange energy are also derived for a cylindrical and harmonic wire. The correlation energy ϵc\epsilon_c is found to be represented by ϵc(b,rs)=α(rs)b+β(rs)  ln(b)+η(rs)\epsilon_c (b,r_s)= \frac{\alpha(r_s)}{b} + \beta(r_s)\; ln(b) + \eta(r_s), for small bb and high densities. For a pragmatic width of the wire, the correlation energy is in agreement with the quantum Monte Carlo simulation data.Comment: Being slightly modifie

    ANTIOXIDANT AND HEPATOPROTECTIVE EFFECT OF QUERCUS ILEX LEAVES EXTRACT IN ETHANOL INDUCED LIVER DAMAGE IN WISTAR RATS

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    Objective: This study was undertaken to investigate the hepatoprotective and antioxidant activity of Quercus ilex leaves extract (QILE) on ethanol-induced toxicity in Wistar rats. Methods: Hepatotoxicity was induced by administering ethanol (40%) at a dose of 7.9 gm/kg/day; p. o. (1:1 of ethanol in olive oil) for 28 d. Silymarin 100 mg/kg/day; p. o. was used as a standard drug. The whole study was divided into a prophylactic and curative study. In the prophylactic study, the Silymarin and QILE (test drug) 100, 200, and 400 mg/kg Body Weight(BW) given orally one hour before administration of 40% ethanol administration for 28 d. In the curative study, 7 d of treatment of Silymarin and QILE 200 and 400 mg/kg BW was given orally after 28 d of ethanol administration to different groups. Results: Hepatoprotectivity was confirmed by the highly significantly (p&lt;0.001) restoration of elevated biochemical parameters like SGPT, SGOT, ALP, TB, and highly significantly (p&lt;0.001) depleted Albumin and Total protein levels by 200 mg/kg BW QILE in comparison to the positive control group. QILE 200 mg/kg highly significantly (p&lt;0.001) raised the antioxidants by draining the elevated oxidative stress markers in comparison of positive control group. At dose levels QILE 200 mg/kg, significant (p&lt;0.05) protection from loss in body weight and in liver weight was found when the comparison was done with the positive control group. Histopathology revealed that QILE 200 mg/kg reduced the markers of cell necrosis. Conclusion: Present study revealed that Quercus ilex leaves have antioxidant and hepatoprotective activity due to its chemical constituents

    Mulk Raj Anand, Raja Rao and R. K. Narayan: The Polemics of Myth making and Influence of Gandhi

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    The present paper represents the three triumvirs of Indian English novel at the critical juncture of the early twentieth century when Gandhian thoughts and polemics were influential throughout India. The paper seeks to explore how under Gandhian presence–both physical as well as metaphorical, these three novelists attempted to explore the myths and mythical narratives of Indian civilization and culture to manifest the ‘collective unconscious’ of the Indian sensibilities. Furthermore, it also tries to understand the polemics of myth-making in the context of post-colonial politics and writing. The nationalist culture of the early twentieth century and the contribution of these writers are being explored to analyze how their narratives are national allegories

    A comparative study of 25µg versus 50µg vaginal misoprostol for induction of labour at term premature rupture of membrane

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    Background: At term, infection remains the most serious complication associated with PROM for the mother and the neonate Induction of labour significantly reduces the risk of maternal and foetal infection. This randomized comparative study has been done to compare the effectiveness and safety of low and high dosage (25 mcg and 50mcg) regimen of vaginal misoprostol for induction in term PROM patients.Methods: At term, infection remains the most serious complication associated with PROM for the mother and the neonate Induction of labour significantly reduces the risk of maternal and foetal infection. This randomized comparative study has been done to compare the effectiveness and safety of low and high dosage (25 mcg and 50mcg) regimen of vaginal misoprostol for induction in term PROM patients.Results: PROM to delivery interval was significantly shorter with 50mcg vaginal misoprostol as compared to 25 mcg vaginal misoprostol (15.71±3.29 hours vs. 18.23±3.23 hours, (p value = 0.0023) Number of doses required was less with 50mcg vaginal misoprostol group as compared to 25mcg vaginal misoprostol (1.22±0.42 vs. 1.91±0.80, p value &lt;0.05). 83.6% women in group A and 69.09% women in group B underwent spontaneous vaginal delivery within 24 hours. 3.64% women in group A and 7.27% in group B had instrumental delivery. Caesarean section was performed in 12.27% cases in group A and 23.64% cases in group B. The complication rate was comparable.Conclusions: 50mcg vaginal misoprostol is more effective and safe for induction of labour at term PROM as compared to 25 mcg vaginal misoprostol

    Specific heat and Thermodynamics of Titanate Perovskite Materials

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    Specific heat and thermodynamical properties of the LaTiO3+?/2 have been investigated for the first time using extended rigid ion model (ERIM). With the increase of nominal hole doping ?, the system undergoes a phase change from an insulating phase to a metallic phase at ?cIM = 0.05 and the low-temperature antiferromagnetic phase disappears at ?cmag = 0.08. LaTiO3+?/2 has been suggested to have promising scientific and technological applications. Our computed specific heat results follow the same trends of variation with corresponding experimental data. The values of specific heats also increase with temperature. The theoretically computed thermodynamical properties of LaTiO3+?/2 compound are in good agreement with the available experimental results. Keywords: Thermodynamical properties, Perovskites, Specific heat, Debye temperature, Cohesive energ

    AYURVEDA MANAGEMENT OF TRAUMATIC ARTHRITIS OF KNEE (JANU VATA) WITH SPECIAL REFERENCE TO ARJUNA KSHEERA PAKA- A CLINICAL STUDY

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    In this clinical study 40 Traumatic arthritis patients aged 35-65 years were selected at random in OPD of TTDs S.V Ayurvedic Hospital PG Dravyaguna Dept, Tirupati. In Group I, 20 patients were treated with Terminalia arjuna powder TAP (oral intake of Arjuna powder boiled with milk). In group II, 20 patients were treated with Terminalia arjuna Ksheerapaka powder TAKP (Arjuna powder boiled with milk and filtered into semisolid and made into fine powder). The aim of the study was comparative clinical evaluation between group I and group II in the management of Traumatic arthritis.Guggulu tablets are used for joint pains. But it has Lekhana and Medohara properties and causes Vata prakopa. Thats why there is an acute need for safe herbal drug. Therefore Arjuna, a Bhagna sandhanakara drug mentioned in Vrindamadhava is taken for the study. The form of drug is Arjuna bark powder by boiled with milk (Bhagna pibeth tvak payasarjunasya).It is observed that there is no significant difference between group I and group II in the mean values of fatigue, Pain radiating to other parts and walking time but significant difference were observed in ESR before and after treatment in group I and group II. Group II showed better results in reducing restricted movement and Group I shows better results in reducing inflammation.Based on all the observed results it can be concluded that Group II has showed highly significant improvement when compared in between groups, this may be due to Jeevaniya and Sandhaniya karma of milk which causes synergetic action of Arjuna karmas. No complications were observed in the clinical study
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