Isgur-Wise function in a QCD potential model with coulombic potential as perturbation

We study heavy light mesons in a QCD inspired quark model with the Cornell potential$-\frac{4\alpha_{S}}{3r}+br+c$. Here we consider the linear term $br$ as the parent and $-\frac{4\alpha_{S}}{3r}+c$ i.e.the Coloumbic part as the perturbation.The linear parent leads to Airy function as the unperturbed wavefunction. We then use the Dalgarno method of perturbation theory to obtain the total wavefunction corrected upto first order with Coulombic peice as the perturbation.With these wavefunctions, we study the Isgur-Wise function and calculate its slope and curvature.Comment: paper has been modified in Airy functions calculation upto o(r^3

Comparison of CD4 and CD8 counts and ratio in HIV negative pulmonary tuberculosis patients with normal healthy controls

Background: There is an equivocal contention that Tuberculosis may be a cause of non-HIV-associated CD4+ T cell lymphopenia. In HIV negative patients, CD4+ and CD8+ T cell count suppression has been associated with TB infection. Prediction of HIV coinfection in newly diagnosed pulmonary TB patients with negative HIV status by estimation of CD4, CD8 count and CD4:CD8 ratio.Methods: Newly diagnosed pulmonary TB patients comprising of 30 numbers with negative HIV status were subjected for estimation of CD4, CD8 counts and ratio for prediction of HIV coinfection. Equal number of healthy controls was also included in the study for comparison of the values.Results: Significantly lower CD4 and CD8 counts among pulmonary TB infected HIV negative patients as compared with healthy controls was found. The CD4:CD8 ratio was normal when compared with healthy controls.Conclusions: The present study highlights the importance of estimation of CD4+ and CD8+ T cell counts and ratio in newly diagnosed pulmonary TB patients with negative HIV status. Prediction ability in combination with early detection and appropriate management play major role in evading emergence of drug resistance among the HIV-TB coinfected patients

Attenuation of coda waves in the Northeastern Region of India

Coda wave attenuation quality factor Qc is estimated in the northeastern region of India using 45 local earthquakes recorded by regional seismic network. The quality factor Qc was estimated using the single backscattering model modified by Sato (J Phys Earth 25:27–41, 1977), in the frequency range 1–18 Hz. The attenuation and frequency dependence for different paths and the correlation of the results with geotectonics of the region are described in this paper. A total of 3,890 Qc measurements covering 187 varying paths are made for different lapse time window of 20, 30, 40, 50, 60, 70, 80, and 90 s in coda wave. The magnitudes of the analyzed events range from 1.2 to 3.9 and focal depths range between 7 and 38 km. The source–receiver distances of the selected events range between 16 and 270 km. For 30-s duration, the mean values of the estimated Qc vary from 50 ± 12 (at 1 Hz) to 2,078 ± 211(at 18 Hz) for the Arunachal Himalaya, 49 ± 14 (at 1 Hz) to 2,466 ± 197 (at 18 Hz) for the Indo-Burman, and 45 ± 13 (at 1 Hz) to 2,069 ± 198 (at 18 Hz) for Shillong group of earthquakes. It is observed that Qc increases with frequency portraying an average attenuation relation Qc = 52.315 ± 1.07 f (1.32±0.036) for the region. Moreover, the pattern of Qc−1 with frequency is analogous to the estimates obtained in other tectonic areas in the world, except with the observation that the Qc−1 is much higher at 1Hz for the northeastern region. The Qc−1 is about 10−1.8 at 1 Hz and decreases to about 10−3.6 at 18 Hz indicating clear frequency dependence. Pertaining to the spatial distribution of Qc values, Mikir Hills and western part of Shillong Plateau are characterized by lower attenuation

Attenuation of coda waves in the Northeastern Region of India

Coda wave attenuation quality factor Qc is estimated in the northeastern region of India using 45 local earthquakes recorded by regional seismic network. The quality factor Qc was estimated using the single backscattering model modified by Sato (J Phys Earth 25:27–41, 1977), in the frequency range 1–18 Hz. The attenuation and frequency dependence for different paths and the correlation of the results with geotectonics of the region are described in this paper. A total of 3,890 Qc measurements covering 187 varying paths are made for different lapse time window of 20, 30, 40, 50, 60, 70, 80, and 90 s in coda wave. The magnitudes of the analyzed events range from 1.2 to 3.9 and focal depths range between 7 and 38 km. The source–receiver distances of the selected events range between 16 and 270 km. For 30-s duration, the mean values of the estimated Qc vary from 50 ± 12 (at 1 Hz) to 2,078 ± 211(at 18 Hz) for the Arunachal Himalaya, 49 ± 14 (at 1 Hz) to 2,466 ± 197 (at 18 Hz) for the Indo-Burman, and 45 ± 13 (at 1 Hz) to 2,069 ± 198 (at 18 Hz) for Shillong group of earthquakes. It is observed that Qc increases with frequency portraying an average attenuation relation Qc = 52.315 ± 1.07 f (1.32±0.036) for the region. Moreover, the pattern of Qc−1 with frequency is analogous to the estimates obtained in other tectonic areas in the world, except with the observation that the Qc−1 is much higher at 1Hz for the northeastern region. The Qc−1 is about 10−1.8 at 1 Hz and decreases to about 10−3.6 at 18 Hz indicating clear frequency dependence. Pertaining to the spatial distribution of Qc values, Mikir Hills and western part of Shillong Plateau are characterized by lower attenuation

Isgur-Wise Function for Heavy Light Mesons in D dimensional Potential Model

We report results of a potential model for mesons in D space-time dimension developed by considering the quark-antiquark potential of Nambu-Goto strings. With this wave function, we have studied Isgur-Wise function for heavy-light mesons and its derivatives like slope and curvature. The dimensional dependence of our results and a comparative study with the results of 3+1 dimensional QCD are also reported.Comment: 11 pages, 4 figure

Permaculture to monoculture in shifting cultivation landscape of Mizoram, Northeast India: Are agrobiodiversity and happiness waning?

479-485The status of agrobiodiversity and perceived well-being of one indigenous community, namely the Mara tribe, was assessed in a pilot study of 150 households sampled at random from two blocks in Saiha district, which lies at the south-western corner of the state of Mizoram. A subsample of 50 households was chosen, based on a set of predefined criteria, for data collection using mix methods approach. The study documented 30 species of plants being cultivated by the respondents. The species comprised ten vegetables, nine fruit plants, seven field crops and four species of spices and condiments and their cultivation was supplemented with five species of domesticated livestock. The plants other than field crops were identified by the respondents as top three choices for the diversification of farming. The growing transition to monoculture is taking its toll on the respondents’ sense of subjective well-being. Most of them (92%) reported a moderate level of well-being or fluctuating levels of well-being: they are struggling now and expect to struggle even more in the future, to continue their way of life. We urge caution in the drive towards modernization lest the change should threaten the well-being of people and the ecological–economic trade-offs of monoculture

Banana plant - potential source of raw material for hand made paper industry

Utilization of banana plant for making hand made paper and certain grades of specialty paperboards have been investigated. The physiochemical characteristics of the three species of banana plants viz. Musa velutina, M. paradisica and M. sapientum available in NEregion of India were studied. The plants consists an average of 25 -27 %sheath, 42 -48 % core and 27 - 30 % leaves. The cellulose content was varied from 59 - 63 %, lignin from 15.3 - 18.2 %and pantosan from 13.5 - 15.2 %. in all the three plant species. The cooking experiments were conducted in an open vat under pressure free condition using NaOH and Na2C03 as cooking chemicals. The percentages of cooking chemicals were varied from 6- 10 %maintaining bath ratio at 1:6. The unbleached pulp yield was recorded 48 - 52 %. The bleaching of the pulps was carried out using H- E- H202sequence to get 60 - 65 %brightness. The physical strength properties of hand made paper made from these three plant species showed tensile index 55.4 - 62.8 Nmg-1,Tearindex 10.4 - 15.2 mNm2t, Burstindex 6.2 - 8.7 Kpm2g-1with Double fold values 300+. However certain specialty paperboard such as leatherboard made out of banana pulp in combination 'with bamboo pulp showed breaking load 120 - 145 (Kg),Tensile strength (dry)220 - 250 Kg/cm2,elongation 39 - 42 %, linearshrinkage 4.0% and areashrinkage 4.2 - 4.5%. Another specialty boardssuch as solid toughened board made from the blends of ragand banana pulp showed very good physical strength with breaking load value 160 kg and 90 kg respectively for30 cm and 60cm span with minimum absorption of moisture