Characterization of Unruh Channel in the context of Open Quantum Systems

We show through the Choi matrix approach that the effect of Unruh acceleration on a qubit is similar to the interaction of the qubit with a vacuum bath, despite the finiteness of the Unruh temperature. Thus, rather counterintuitvely, from the perspective of decoherence in this framework, the particle experiences a vacuum bath with a temperature-modified interaction strength, rather than a thermal bath. We investigate how this "relativistic decoherence" is modified by the presence of environmentally induced decoherence, by studying the degradation of quantum information, as quantified by parameters such as nonlocality, teleportation fidelity, entanglement, coherence and quantum measurement-induced disturbance (a discord-like measure). Also studied are the performance parameters such as gate and channel fidelity. We highlight the distinction between dephasing and dissipative environmental interactions, by considering the actions of quantum non-demolition and squeezed generalized amplitude damping channels, respectively, where, in particular, squeezing is shown to be a useful quantum resource.Comment: 15 pages, 19 figure

Frontiers in Mechanochemistry and Mechanical Alloying

The book Frontiers in Mechanochemistry and Mechanical Alloying [ISBN : 97881-87053-69-8] (Rakesh Kumar, Srinivasan Srikanth and Surya Pratap Mehrotra (Eds.))is a compilation of papers presented in the VI International Conference on Mechanochemistry and Mechanical Alloying (INCOME) held at CSIR-National Metallurgical Laboratory (CSIR-NML), Jamshedpur (India) during December 1-4,2008 under the aegis of International Mechanochemistry Association (IMA). Fifty three papers (334 pp) included in this book are written by experts from all over the world

RP-HPLC METHOD DEVELOPMENT AND VALIDATION FOR SIMULTANEOUS QUANTITATIVE ESTIMATION OF MEBEVERINE HYDROCHLORIDE AND CHLORDIAZEPOXIDE IN CAPSULES

Objective: To develop an accurate, precise and linear Reverse Phase High Performance Liquid Chromatographic (RP-HPLC) method for simultaneous quantitative estimation of Mebeverine hydrochloride and Chlordiazepoxide in MEVA C capsules and validate as per ICH guidelines.Methods: The optimized method uses a reverse phase column, Enable Make C18G (250 X 4.6 mm; 5μ), a mobile phase of triethylammonium phosphate buffer (pH 2.5): acetonitrile in the proportion of 60:40 v/v, flow rate of 1.0 ml/min and a detection wavelength of 240 nm using a UV detector.Results: The developed method resulted in Mebeverine eluting at 5.8 min and Chlordiazepoxide at 3.9 min. Mebeverine exhibited linearity in the range 250-750μg/ml, while Chlordiazepoxide exhibited linearity in the range 9.25-27.75μg/ml. The precision is exemplified by relative standard deviations of 1.45% for Mebeverine and 1.58% for Chlordiazepoxide. Percentage Mean recoveries were found to be in the range of 98â€102, during accuracy studies. The limit of detection (LOD) for Mebeverine hydrochloride and Chlordiazepoxide were found to be 91.67µg/ml and 2.23µg/ml respectively, while limit of quantitation (LOQ) for Mebeverine hydrochloride and Chlordiazepoxide were found to be 277.81µg/ml and 6.77µg/ml respectively.Conclusion: A simple, accurate, precise, linear and rapid RP-HPLC method was developed for simultaneous quantitative estimation of Mebeverine hydrochloride and Chlordiazepoxide in MEVA C capsules and validated as per ICH guidelines. Hence it can be used for the routine analysis of Mebeverine and Chlordiazepoxide in capusles in various pharmaceutical industries.Â

A clinical study of surgical management of distal femur fracture using locking compression plate

Background: Fractures of distal femur are common due to increased road traffic accidents and fall from height because of increased construction activities. These fractures are quite disabling hence, these fractures necessitate early stabilization of fractures. Internal fixation with LCP has shown to give one of the best results in terms of recovery, fracture union, and clinical outcome. The aim of the study the clinical outcome of treatment of distal femur fractures using locking compression plates.Methods: A total of n=20 cases of distal femur fractures treated with LCP from December 2013 to June 2015 at NMCH and RC, Raichur. They were admitted and examined according to protocol clinically and radiologically. All patients were followed up for a minimum of 6 months and outcome assessed with Neer’s score.Results: All fractures healed with an average duration of 16 weeks which is comparable with other studies. We had two cases of varus collapse one was due to early weight bearing in one case and other case is due to gross communition. One case had an implant failure (plate breakage) due to early weight bearing. Cases needing hardware revision is comparable to other studies at 10%. Average Neer's knee score was 76.Conclusions: we have found higher Neer’s scores in this study. The LCP also prevents compression of periosteal vessels. It may not completely solve the age-old problems associated with any fracture like non-union and malunion, but is a valuable technique in the management of these fractures. But however, in type C fractures the outcome is poorer

Simultaneous residual stress mapping of topcoat and TGO in APS TBC using combined micro-raman-PL spectroscopy

Please click Additional Files below to see the full abstract

A study of proximal humerus fractures treated by PHILOS plating in a tertiary care hospital

Background: Proximal humeral fractures are commonly presented in the orthopedic practice. The usual method of treatment was conservative in the past. However, the results and functional outcomes were not good. With the development of PHILOS locking plates, the functional outcomes are known to be improved. We in the present study tried to evaluate the functional outcomes of proximal humerus fractures treated with PHILOS plates.Methods: This prospective study was conducted in all Adult patients with closed two-part and three-part fractures of the proximal humerus, those who have reported within a week of the injury were included in the study. A total of n=30 patients were included in the study based on the inclusion and exclusion criteria. A standard surgical approach with PHILOS plate was used and patients were followed up for 19 to 24 months.Results: n=30 patients out of which n=16 (53.33%) were males and n=14 (46.67%) were females. The most common age group involved in the fractures was 31-35 years n=9 (30%) of the patients. Most of the patients n=21 (70%) were having Neer's two-part fractures and three-part fractures were found in n=6 (20%) and four part in n=3 (10%). The overall results in the study were 66.67% of patients had excellent results and 16.67% had good results and 10% had poor results.Conclusions: PHILOS locking plates is a better treatment option for fractures of proximal humerus especially in cases of poor bone quality and comminuted fractures