PolarLight is a compact soft X-ray polarimeter onboard CubeSat, which was launched into low-Earth orbit on October 29, 2018. In March 2019, started full operation, and since then, regular observations with the Crab nebula, Sco X-1, background regions have been conducted. Here we report calibration, performance of in orbit. Based these, discuss how one can run low-cost, shared CubeSat for space ...

our aim in this paper is to introduce the notion of fuzzy soft near-subtraction semigroupsand fuzzy soft ideals of near-subtraction semigroups. we discuss some important properties of these new fuzzy algebraic structure and investigate some examples and counter examples.

The paper introduces soft switching of a Boost Converter which can be included in the Electrical Vehicle technology. In order to raise the motor power rating, the DC link Vehicles, there is a great need for less component stress, smaller voltage of inverter up to 400V, and higher efficiency. The conventional Boost Converter generates switching loss at turn on and off thus the whole system's eff...

Abstract The SOLARIS synchrotron located in Krakow, Poland, is a third-generation light source operating at medium electron energy. first was observed 2015, and the consequent development of infrastructure lead to users’ experiments soft X-ray energies 2018. Presently, expands its operation towards hard X-rays with continuous developments beamlines concurrent infrastructure. In following, we wi...

background : education is based upon the knowledge, skills, and attitudes that are required for an occupation, and the changes occurring in the occupations and duties as well as in the ideals and values necessitate constant needs analysis. furthermore, owing to the transformations in sciences, especially medical sciences, the current syllabus for the operation room courses at associate level wi...

The principle of operation and types soft starters, their purpose necessity are considered, ways to increase the service life asynchronous motors proposed

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract In AC to DC converters, power factor has significant importance. Most power converters and equipments are developed to have power factor correction technology to improve their performance. A soft-switching two-switch resonant ACDC converter with hi...

In a distributed system where scalability is an issue, the problem of enforcing mutual exclusion often arises in a soft form: the infrequent failure of the mutual exclusion predicate is tolerated, without compromising the consistent operation of the overall system. For instance this occurs when the operation subject to mutual exclusion requires massive use of a shared resource. We introduce a s...

We describe a liquid-nitrogen-jet laser-plasma source with sufficient brightness, uniformity, stability, and reliability to be suitable for compact water-window soft x-ray transmission microscopy. A cooled capillary nozzle arrangement allows long-term operation and avoids previously reported jet instabilities. The source is quantitatively characterized by calibrated slit-grating spectroscopy an...