Electrical steels are used across applications such as small relays, solenoids, electric motors, generators, and many other electromagnetic devices. It is used mainly in electrical power distribution systems and in automotive industry. Electrical steel is also referred to as silicon steel, transformer steel, or lamination steel. In this study is described the basic classification of electrical steels. In addition, main properties of electrical steels and the production process of these steels is described.

Keywords - Electrical steel, goss texture, grain – oriented electrical steel, non – oriented electrical steel, cutting gap

In recent years we face a substantial research efforts towards realization of autonomous cars [1]. The regulation in various countries has strict demands that the autonomous car will be safe at least as a car driven by a common driver is [2]. One stratum is developing an algorithm that gathers data from the environment and cause the car to act accordingly. Among various data types, the detection and identification of traffic signs is of major importance [3]. Since traffic signs enables proper driving, avoiding accidents, alert the driver of dangers along the route, etc., it is critical regarding car control.

The study deals with the development of optimal maintenance model for distribution system infrastructure. The main objective is to minimize the total maintenance cost while maximizing the index of reliability of the whole system. In the proposed model, the limits of the indices, such as SAIDI and SAIFI, are considered as constraints of the maintenance programs. The RCM method has used the power interruption statistical data in analyzing the reliability indices of the distribution system. The result of the maintenance strategy has helped in deciding the appropriate maintenance selection to improve the system reliability, and minimize the interruption in the distribution system.

Keywords - Power System Reliability, Reliability-Centered Asset Maintenance (RCAM), Power System Maintenance, Preventive maintenance, Corrective Maintenance

Composite flour based RTE food was formulated with Nutricereals (Finger millet, Foxtail millet, Little Millet) along with some of the functional ingredients such as whey protein concentrate and horse gram along with added sugar and other herbal ingredients. Composite flour: Corn-wheat (75: 25), 20 per cent sugar, 10 per cent horse gram and 8.0 per cent WPC comprised sweetened composite flour RTE food and 5% spice mix replacing sugar comprised spiced based composite flour RTE food respectively. Extruded products such as snack foods and breakfast cereals are considered microbiologically safe to eat because the raw materials are subjected to high temperatures (higher than 130°C) and the water activity of the product is between 0.1 and 0.4 because the product is dried to a moisture content of less than five per cent.........

Keywords - Minor millet, Finger millet, Foxtail millet, Little Millet, Horse gram, WPC, Composite flour, RTE food

Computing and communication technology, also commonly known as Information Technology (IT) has been radically transforming the way we live, learn, work and play. Many companies in the construction industry do not appear to have appreciated the positive changes and advantages that the new technology was providing to companies in other sectors of economy. (Kasim, 2011) stated that, during the 1980s ITs were only used in few construction companies. Though, most building firms were using computers in the 1980s, their core function was such as accounting, wages and salary, very few of the companies used the ITs for planning and managing the construction activities.

The Static Synchronous Compensator (STATCOM) is one of the second generation of Flexible Alternating Current Transmission System (FACTS), which is widely utilized to enhance power system performance due to its several advantages such as compact, high response speed and no harmonic pollution. This paper investigates the effects of STATCOM on the performance of the Nigeria 330 kV, 34-bus power system network. The power flow equations describing the steady-state conditions of the system network before and after compensation were modeled and simulated in the NEPLAN software environment. The results from the analysis revealed that before the application of STATCOM, seven (7) buses of the thirty four (34) buses of the case study have their voltage........

Keywords - STATCOM, FACTS, Power flow, Steady-state, Power loss, Power compensation.

The paper addresses effect of leverage on stock price during the global COVID-19 pandemic-an unprecedented economic disaster- on various companies in the NSE and BSE stock indexes based on outstanding loans of each company, and tries to derive a relationship between the amount of debt and change in price of the various stocks compared to the returns on the NSE indices.The DEBT to EBITDA and DEBT to Equity ratios of firms in NIFTY 50 and NIFTY Midcap 50 are used to check if 'The stock price of highly leveraged companies tend to underperform during time of pandemic as compared to the stock performance of companies with lower or no leverage'

Keywords - NSE, NIFTY 50, NIFTY MIDCAP 50, Leverage, COVID-19

This paper discusses a number of issues of laser and laser-hybrid technologies that can be used with intelligent modern laser technological complexes to obtain composite materials of different elements composition. We are talking about the following new physical principles based on laser methods of surface treatment of various materials controlled in the required direction with micro- nanostructures and hydrodynamic instabilities. The paper also presents experiments on crystallization of complex structures from a melt with an analysis of the morphology of the resulting crystalline structures, and shows examples of the occurrence of fractal dendritic formations. Different types of morphology are induced depending on the energy of the laser radiation and the duration of the heating determining the final state of objects with the desired functional and structural characteristics..........

Keywords - 4D-laser technologies, controllable surface topological structures, nanostructures engineering of the thin film systems

In this paper, a new approach is proposed to solve environmental economic dispatch (EED) problem in power systems using improved artificial bee colony (IABC) algorithm. The EED problem is to minimize both the operating fuel cost and emission level simultaneously while satisfying the load demand and operational constraints. A novel best mechanism algorithm based on ABC algorithm, in which a new mutation strategy inspired from the differential evolution (DE) is introduced in order to improve the exploitation process. The effectiveness of the proposed algorithm has been tested on IEEE 30-bus test system and the results were compared with other methods reported in recent literature. The simulation results show that the proposed algorithm outperforms previous optimization methods.

Keywords - Economic dispatch, emission dispatch, combined economic emission dispatch, improved artificial bee colony algorithm, differential evolution.

As the increasement of wind power penetration in power systems,the impact of fluctuationandintermittence onsystemsbrought by wind energy leads to computational accuracy and complexity problems foroptimaloperationcost solution in daily net load scenarios. To decrease computational complexity while maintaining adequate accuracy for the stochastic unit commitment problem (SUC), this paper presents a genetic clustering algorithm. Firstly, a sequence of severely changed net load values duringdayandnight time periods is chosen as clustering index, secondly, the genetic clustering algorithm was used to reduce the scenarios, through which we can obtain the reduced scenarios and their corresponding probabilities. Afterwards, a process of CPLEX was introduced to solve the SUC problem in the full scenarios and the reduced scenarios, then a metric based on the optimal results in SUC under the two kinds of scenarios is adopted, the test result shows the effectiveness of the proposed algorithm.

Keywords - daily net load scenarios,clustering index, genetic clustering algorithm

The reaction of propargyl halide with oxygen in Ar matrix has been conducted. There is no new peak was observed after the codeposition of Ar/propargyl halide. After the photolysis, a peroxide intermediate 3-(halomethyl)-1,2-dioxetene was observed first. Further photolysis led to the breakage of O-O bond of 3-(halomethyl)-1,2-dioxetene and formed final product of 3-halo-2-oxopropanal and/or 2-haloacetaldehyde and CO. The reaction mechanism was similar to that of reaction of chloroacetylene with oxygen, the additional -CH2- group did not alter the reaction path.

Keywords - IR, matrix isolation, propargyl halides, oxygen

The following mathematical calculation work analyzes the construction of the Repetition-Magnitude-Persistence (RPM) curve, with numerical data of maximum annual intensities, collected in a 48-year time series, from the León station, Nicaragua; code 64043, latitude 12°25´36" and longitude 86°54´48", elevation 60 msnm, type HMP. The methodology consisted of a sampling on the respective pluviograms, in order to obtain the maximum intensities per year, for persistence of 5, 10, 15, 30, 60, 120 and 360 minutes. The data were taken to hourly quantities with multiple linear regression. The RPM curves were then constructed for return periods of 5, 10, 15, 20, 30, 50 and 100 years. Thus, it can be pointed out that the RPM curves obtained for the León station are similar with others that can be generated for the studied area.

Keywords - Periodo de retorno, magnitud, persistencia, repetición, regresión

A simple and well known epidemiological deterministic model was selected to estimate future outcomes for the 2020 dynamics of the Covid-19 epidemic breakout in the city of São Paulo – Brazil with a population of 12.2 million inhabitants. A time-dependent incidence weight on the reproductive basic number accounts for modeling social distancing, and local Mitigation Policies (MP). Official published data from January 1st to July 7th, 2020 was used to adjust all the model parameters aiming to forecast the evolution of the COVID-19 epidemic outbreak. Data points for the last seven weeks, prior July 7th, were added after the model was complete, granting confidence on the outcomes.........

Keywords - COVID-19; Brazil; epidemiological model; mitigation policy; social distancing; herd immunity.