background: euroscore is a simple and rigorous risk stratification model and is, thus, commonly used in predicting the early and late outcomes of cardiac surgery across the world. we aimed to assess the discriminative power of the euroscore model to predict postoperative morbidity and total prolonged length of stay in hospital (los) and intensive care unit (icu) stay in an iranian group of card...

Liquid paraffin can be used as a coolant fluid in electronic and cutting devices due to its suitable capabilities such as electrical insulating, high heat capacity, chemical, and thermal stability, and high boiling point. In this study, the dynamic viscosity of paraffin containing the alumina nanoparticles has been examined experimentally. The nanofluids with different composition of alumina (0...

In power grids, there must always be a balance between energy production and consumption. Due to the variable nature of consumers, energy production should also be subject to these changes. Electricity storage is one of the most important issues in the electricity industry, which can generate many ancillary services such as load curve leveling, peak shaving, integration with renewable units, ro...

Current–voltage (I–V) curve measurement is an essential performance characterization technique for laser power converters (LPCs). Choosing appropriate scan time can effectively avoid problems in the test process that lead to inaccurate data. We analyzed I–V error of a GaAs LPC relation by building system LPCs. A method determining optimal time, defined as period containing upper limit and lower...

The key problem to be solved in the process of wind turbine (WT) operation and maintenance is obtain performance accurately. power curve an important indicator evaluate turbines. How model turbines has always been one hot topics research. This paper proposes a novel idea get actual Firstly, basic data preprocessing algorithm designed zero value null original supervisory control acquisition (SCA...