Weak-Field Thermal Hall Conductivity in the Mixed State of d-Wave Superconductors

Thermal transport in the mixed state of a d-wave superconductor is considered within the weak-field regime. We express the thermal conductivity, $\kappa_{xx}$, and the thermal Hall conductivity, $\kappa_{xy}$, in terms of the cross section for quasiparticle scattering from a single vortex. Solving for the cross section (neglecting the Berry phase contribution and the anisotropy of the gap nodes), we obtain $\kappa_{xx}(H,T)$ and $\kappa_{xy}(H,T)$ in surprisingly good agreement with the qualitative features of the experimental results for YBa$_{2}$Cu$_{3}$O$_{6.99}$. In particular, we show that the simple, yet previously unexpected, weak-field behavior, $\kappa_{xy}(H,T) \sim T\sqrt{H}$, is that of thermally-excited nodal quasiparticles, scattering primarily from impurities, with a small skew component provided by vortex scattering.Comment: 5 pages, 2 figures; final version as published in Phys Rev Let

Chirality induced anomalous-Hall effect in helical spin crystals

Under pressure, the itinerant helimagnet MnSi displays unusual magnetic properties. We have previously discussed a BCC helical spin crystal as a promising starting point for describing the high pressure phenomenology. This state has topologically nontrivial configurations of the magnetization field. Here we note the consequences for magneto-transport that arise generally from such spin textures. In particular a skyrmion density induced `topological' Hall effect, with unusual field dependence, is described.Comment: 4 pages, 3 figures, to appear in the proceedings of SCES 07 (the international conference on strongly correlated electron systems 2007 in Houston, USA

A Study on Prescription Pattern of Multivitamins in Type-2 Diabetes Mellitus in Tertiary Care Hospital

Aim of the study: To study the prescribing pattern of multivitamins in type-2 DM in tertiary care hospitals. Materials and methods: Human ethical approval was taken from human ethical committee, ABIPER Bangalore. The diabetic patients who satisfied the study criteria were enrolled. The patients data’s were collected in specially designed documentation form. The collected data’s were assessed using descriptive statistics. Results: The study was conducted in 158 patients in which most prescriptions [72.17%] contains water soluble vitamins+minerals. Multivitamins with or without minerals were prescribed for 90[79.76%] and 30[20.24%] days respectively. Multivitamins [100%] were given orally once a day. For indication fatigue [29.11%], water soluble vitamins+minerals were prescribed mostly. Many DM-2 patients were prescribed with water soluble vitamins+minerals which contain vitaminC and calcium carbonate as main constituents. Some of multivitamins doses were showing compliance as per FDA dose recommendations. Tablet formulation containing fat soluble vitamins+minerals[25.31%] were prescribed mostly. Conclusions: Mostly water soluble vitamins+minerals were prescribed for DM-2 patients. Multivitamins with or without minerals were prescribed for 90and30 days respectively. All multivitamins were prescribed in oral route. Mostly water soluble vitamins+minerals were prescribed for fatigue illness associated with DM-2 in which vitamin C and calcium carbonate were the main constituents. Some of the prescribed multivitamin doses were within the FDA recommended dose range. Tablet formulations were frequently prescribed with oral anti-diabetic drugs. Keywords: Multivitamins, Diabetes mellitus, Hypertension, Prescription

Decoherence on a two-dimensional quantum walk using four- and two-state particle

We study the decoherence effects originating from state flipping and depolarization for two-dimensional discrete-time quantum walks using four-state and two-state particles. By quantifying the quantum correlations between the particle and position degree of freedom and between the two spatial ($x-y$) degrees of freedom using measurement induced disturbance (MID), we show that the two schemes using a two-state particle are more robust against decoherence than the Grover walk, which uses a four-state particle. We also show that the symmetries which hold for two-state quantum walks breakdown for the Grover walk, adding to the various other advantages of using two-state particles over four-state particles.Comment: 12 pages, 16 figures, In Press, J. Phys. A: Math. Theor. (2013

A Study on Prescribing Pattern of Antihypertensive in Chronic Kidney Disease Patients

Background: Chronic kidney disease causes progressive loss of function which gradually occur overtime leading to decrease in GFR levels leading to dysfunction of renal system. Hypertension is found to be intermingled cause and overlapping complication in CKD. It is important to intervene the progression by controlling the blood pressure to prevent kidney failure by administration of anti-hypertensive. Objectives: To study current trends in anti-hypertensive prescription pattern in CKD patient and to evaluate the concurrent patterns are in adherence according to the guidelines mentioned.  Methods: Prospective observational study was undertaken in patients who were satisfying the inclusion criteria and was enrolled into the study conducted for a 6months period in a tertiary care hospital in Bangalore. Results: 150 CKD patients were examined out of which 72% prevalence seen in males compared to females 28%. Dual drug therapy was most preferred combination seen in 48% of the prescriptions. CCB was the most preferred class of drug and least preferred class of drug was ACE. More than 85% deviation from JNC-8 was seen. 20% of mono-therapy was found in adherence to JNC-8. Conclusion: A 15% adherence to JNC-8 guidelines was observed in the treatment indicating need for clinical pharmacist who play vital role in management of CKD by adherence to JNC-8 to ensure safety, efficacy and rationality. Keywords: Chronic kidney disease, Hypertension, Prescription pattern, JNC-8 guidelines, Compliance, Anti-Hypertensive. &nbsp