Flux free growth of large FeSe1/2Te1/2 superconducting single crystals by an easy high temperature melt and slow cooling method

We report successful growth of flux free large single crystals of superconducting FeSe1/2Te1/2 with typical dimensions of up to few cm. The AC and DC magnetic measurements revealed the superconducting transition temperature (Tc) value of around 11.5K and the iso-thermal MH showed typical type-II superconducting behavior. The lower critical field being estimated by measuring the low field iso-thermal magnetization in superconducting regime is found to be above 200 Oe at 0K.Comment: 15 pages text + Figs. Novel large cm size FeSe1/2Te1/2 superconducting crystal

DEVELOPMENT OF RENAL DOSING GUIDELINES FOR NONSTEROIDAL ANTI-INFLAMMATORY DRUGS AND ANTIBIOTICS - A PROSPECTIVE STUDY

Objectives: The objectives of this study were to determine the impact of renal dosing guidelines on prescribing pattern for nonsteroidal anti-inflammatory drugs and antibiotic in patients with chronic kidney disease (CKD).Methods: This was a prospective interventional study. The study was divided into two phases, pre-intervention and post-intervention phases. Data regarding the kidney function and the pattern of drug dosing will record in the pre-intervention phase. Pocket guides were prepared for the drug dosing in renal impairment and were distributed to clinicians and the pharmacist as a part of intervention. In the post-intervention phase, the dosing pattern of renal eliminated drugs was observed for any improvement. The patterns of dosing of renal eliminated drugs were compared in both the phases.Results: In pre-interventional phase, a total of 43 cases were reviewed, 20 of them were non-hemodialysis (non-HD) (9 female and 11 male) cases with a mean±standard deviation (SD) age of 56.05+8.22 (56) and 23 were undergoing HD (11 female and 12 male) cases with a mean±SD age of 56.72+6.85 (56). In the post-intervention phase, a total of 41 cases were reviewed, 22 of them were non-HD (12 female and 10 male) cases with a mean±SD age of 55.85+6.87 (57) and 19 were undergoing HD (10 female and 9 male) cases with a mean±SD age of 55.77+8.39 (56.6).Conclusion: Health-care professionals have an important responsibility in monitoring the dose for renal impairment patients. Development of renal dosing guidelines for patients hospitalized with CKD can improve the pattern of prescribing in renal failure population.Â

High Field (up to 140kOe) Angle Dependent Magneto Transport of Bi2Te3 Single Crystals

We report the angle dependent high field (up to 140kOe) magneto transport of Bi2Te3 single crystals, a well-known topological insulator. The crystals were grown from melt of constituent elements via solid state reaction route by self-flux method. Details of crystal growth along with their brief characterization up to 5 Tesla applied field was reported by some of us recently [J. Magn. Mag. Mater. 428, 213 (2017)]. The angle dependence of the magneto-resistance (MR) of Bi2Te3 follows the cos Theta function i.e., MR is responsive, when the applied field is perpendicular (tilt angle Theta = o and/or 180) to the transport current. The low field (10 kOe) MR showed the signatures of weak anti localization (WAL) character with typical cusp near origin at 5 K. Further, the MR is linear right up to highest applied field of 140 kOe. The large positive MR are observed up to high temperatures and are above 250 and 150 percent at 140 kOe in perpendicular fields at 50 K and 100 K respectively. Heat capacity CP(T) measurements revealed the value of Debye temperature to be 135 K. ARPES (angle resolved photoemission spectroscopy) data clearly showed that the bulk Bi2Te3 single crystal consists of a single Dirac cone.Comment: 13 Pages text + Figs... Letter - Mat. Res. Ex