Single-step,in-situfabrication of flower-like NiCuMn hybrid oxyhydroxide electrodes for enhanced supercapacitor performance.

The rational design of highly active and low-cost electrode material is very promising for energy storage applications. The development of supercapacitors with high energy/power density is an imperative and challenging research objective. Herein, we report a highly facile synthesis approach for developing unique nano-porous hybrid NiCuMn oxyhydroxide architecture with remarkable electrochemical energy storage characteristics. The process involves dealloying of Ni15Cu15Mn70alloy in an oxygen rich environment, resulting in a uniform 3-dimensional flower like morphology. The dealloyed electrode demonstrates ultra-high specific capacitance of 4110 F cm-3at a high current density of 20 mA cm-2. A symmetric device exhibits a high volumetric capacitance of 365 F cm-3at a current density of 10 mA cm-2with a large potential window of 1.7 V. Even at very high-power density of 850 W l-1, the device exhibits a high energy density of 146 Wh l-1along with remarkable cyclic stability of 95.4% after 10 000 cycles. The superior performance of nano-porous hybrid NiCuMn oxyhydroxide architecture was attributed to its unique microstructure that provides high surface area, and marginal internal resistance ensuring rapid charge transport.

Rare case of thoracic endometriosis presenting with lung nodules and pneumothorax.

We present the case of a 34-year-old Nigerian woman who was referred to the Respiratory team with a 12-month history of breathlessness. She was concurrently being investigated for an abdominal mass and rectal and vaginal bleeding. Consequently, she underwent cross-sectional imaging of her chest, abdomen and pelvis, revealing a small right-sided pneumothorax and right lower lobe pleural-based lesion. Shortly thereafter, she was admitted to the hospital with chest pain and required chest drain insertion. This partially treated her pneumothorax but she required referral to a cardiothoracic centre for definitive diagnosis and to manage her non-resolving pneumothorax. Biopsies from the video-assisted thoracoscopic surgery confirmed the very rare diagnosis of thoracic endometriosis.

Level of stress and its determinants among Intensive Care Unit staff.

CONTEXT: Stress is a usual and normal part of our daily lives. It is a normal physical reaction to an internal or external pressure that is placed on a person's system. Extended periods of stress can cause destructive changes in the body. OBJECTIVES: (1) To assess the prevalence of stress and its level among intensive care unit (ICU) staff (doctors and nurses) of various hospitals and (2) to correlate the level of stress with certain variables. SETTINGS AND DESIGN: A cross-sectional study was conducted in the ICU of various hospital of Pune for a period of 1 month. MATERIALS AND METHODS: Eighty-two ICU staff (doctors and nurses) were contacted and interviewed using pretested proforma containing DASS stress rating scale (for stress only). STATISTICAL ANALYSIS USED: Data analysis was performed using the Statistical Package for the Sciences (SPSS) version 19.0 software. To compare the level of stress with various parameters, we used Chi-square test. P value <0.05 was considered to be significant. RESULTS: The overall prevalence of stress among ICU staff (doctors and nurses) was 52.43%. Prevalence of stress among ICU doctors was 36.58% and nurses was 68.29%. According to the DASS (for stress only), 19.51% doctors were mildly stressed, 14.63% were moderately stressed, and 2.44% were severely stressed. Among nurses, 48.78% were mildly stressed and 19.51% were moderately stressed. CONCLUSIONS: The result indicated that prevalence of stress among ICU staff (doctors and nurses) is high.

Extracellular α-Galactosidase from Trichoderma sp. (WF-3): Optimization of Enzyme Production and Biochemical Characterization.

Trichoderma spp. have been reported earlier for their excellent capacity of secreting extracellular α-galactosidase. This communication focuses on the optimization of culture conditions for optimal production of enzyme and its characterization. The evaluation of the effects of different enzyme assay parameters such as stability, pH, temperature, substrate concentrations, and incubation time on enzyme activity has been made. The most suitable buffer for enzyme assay was found to be citrate phosphate buffer (50 mM, pH 6.0) for optimal enzyme activity. This enzyme was fairly stable at higher temperature as it exhibited 72% activity at 60°C. The enzyme when incubated at room temperature up to two hours did not show any significant loss in activity. It followed Michaelis-Menten curve and showed direct relationship with varying substrate concentrations. Higher substrate concentration was not inhibitory to enzyme activity. The apparent Michaelis-Menten constant (K m ), maximum rate of reaction (V max), K cat, and catalytic efficiency values for this enzyme were calculated from the Lineweaver-Burk double reciprocal plot and were found to be 0.5 mM, 10 mM/s, 1.30 U mg(-1), and 2.33 U mg(-1) mM(-1), respectively. This information would be helpful in understanding the biophysical and biochemical characteristics of extracellular α-galactosidase from other microbial sources.