Solid state

In comparison to the vapour gas-compression refrigeration, magnetic heat-pumping near room-temperature is regarded to be an alternative technology due to its high energy efficiency and environmentally friendly solid-state cooling materials. The magnetic heat pump technology utilizes the magnetic field induced temperature change, which is based on the magnetocaloric effect (MCE).

7p visergeyne 18-06-2024 3 0   Download

The main contribution of this paper is to show a new AC/DC converter based on the rearrangement of the flyback converter. The proposed circuit only manages part of the energy and the rest is delivered directly from the source to the load. Therefore, with the new topology, the efficiency is increased, and the stress of the components is reduced. The rearrangement consist of the secondary of the flyback is placed in parallel with the load, and this arrangement is connected in series with the primary side and the rectified voltage source.

16p 63696369 20-06-2024 2 1   Download

Part 1 book "Electricity 4 AC/DC motors, controls, and maintenance" includes content: The DC shunt motor, the DC series motor, DC compound motors, summary review of units, starting and operating dc motors, electronic DC motor control, DC variable speed motor control, DC motor dynamic braking, basic principles of automatic motor control, electromechanical and solid state relays and timers, summary review of, the three phase AC induction motor, starting three phase AC induction motors.

172p dianmotminh01 20-05-2024 3 3   Download

Part 2 book "Electricity 4 AC/DC motors, controls, and maintenance" includes content: Controllers for three phase motors; solid state starters and controls; the wound rotor induction motor; the synchronous motor; summary review of units 12; single phase induction motors; special motors and applications; AC series and repulsion motors; energy efficient motors; three phase motor installations; single phase motor and DC motor installation and the national electrical code motor maintenance; summary review of units.

246p dianmotminh01 20-05-2024 8 3   Download

Part 1 book "Electricity 4 AC/DC motors, controls, and maintenance" includes content: The DC shunt motor, the DC series motor, DC compound motors, summary review of units 1–3, manual starting of DC motors, electronic DC motor control; basic principles of automatic motor control; the DC cemf motor controller and DC variable speed motor drives, dynamic braking with a DC motor reversal control, summary review of units 5–9, electromechanical and solid state relays and timers, the three phase, squirrel cage induction motor, starting three phase, squirrel cage induction motors.

159p dianmotminh01 20-05-2024 4 2   Download

Part 2 book "Electricity 4 AC/DC motors, controls, and maintenance" includes content: Controllers for three phase motors, the three phase, wound rotor induction motor, solid state starters and controls, summary review of units 11–16, the synchronous motor, three phase motor installations, single phase induction motors, energy efficient motors, AC series and repulsion motors, selsyn units, motor maintenance, summary review of units 18–24.

212p dianmotminh01 20-05-2024 3 2   Download

Ebook "The craftsman builder" suppose that the job itself is a better teacher than we generally admit, for a lot of people who have migrated to sparsely settled parts of the western states have suddenly become mighty fine craftsmen. Just take a single look at these homes, these barns, these greenhouses. They're serviceable, they're solid, and they've got style!

96p dongmelo 21-05-2024 5 2   Download

Part 1 book "Introduction to solid state physics" includes contents: Crystal structure, wave diffraction and the reciprocal lattice, crystal binding and elastic constants, phonons i - crystal vibrations, phonons ii - thermal properties, free electron fermi gas, energy bands, semiconductor crystals, fermi surfaces and metals, superconductivity.

316p dianmotminh01 17-05-2024 5 3   Download

Part 2 book "Introduction to solid state physics" includes contents: Diamagnetism and paramagnetism; ferromagnetism and antiferromagnetism; magnetic resonance; plasmons, polaritons, and polarons; optical processes and excitons; dielectrics and ferroelectrics; surface and interface physics; nanostructures; noncrystalline solids; point defects; dislocations; alloys.

384p dianmotminh01 17-05-2024 6 3   Download

The distribution network model is one of the sophisticated strategies being used in research to assess the state of household solid waste (HSW) management and calculate the quantity of greenhouse gas emissions from landfills in Nghia Ninh and Bao Ninh communes. Traditional and modern techniques are also being used in this study.

12p vijaychest 24-04-2024 4 2   Download

The administration of land industry in general has been building and perfecting land information and data infrastructure across the country in a modern and standardized way according to a common process, contributing to building a solid foundation for the deployment of e-government, electronic authorities, and smart city. However, there are still legal gaps and state management mechanisms that are obstacles to the current digital transformation process in Vietnam.

10p longtimenosee09 08-04-2024 4 2   Download

Part 3 book "Physics for scientists and engineers - An interactive approach" includes content: Electric current and fundamentals of DC circuits; magnetic fields and magnetic forces; electromagnetic induction; alternating current circuits; electromagnetic waves and Maxwell's equations; geometric optics; physical optics, relativity; fundamental discoveries of modern physics; introduction to quantum mechanics; introduction to solid state physics; introduction to nuclear physics; introduction to particle physics.

434p muasambanhan10 11-04-2024 4 2   Download

Part 1 book "Problems in solid state physics with solutions" includes content: Drude theory of metals, sommerfeld theory of metals, bravais lattice, point groups, classification of bravais lattices, space groups of crystal structures, scattering of X-rays by a crystal, reciprocal lattice, X-ray diffraction on crystals, crystal structure by neutron diffraction, bonding in solids, cohesion of solids, normal modes of lattice vibrations, quantum theory of lattice vibrations, inelastic neutron scattering by phonons, origin of electronic energy bands.

146p muasambanhan10 06-04-2024 1 0   Download

Part 2 book "Problems in solid state physics with solutions" includes content: Electrons in a weak periodic potential, methods for band structure computations, dynamics of bloch electrons in electric fields, fundamentals of semiconductors, density functional theory, pseudopotentials, projector augmented plane wave method, determination of electronic band structures, crystal defects, electron phonon interaction, transport properties of solids, magnetic properties of solids, optical properties of solids, superconductivity.

196p muasambanhan10 06-04-2024 1 0   Download

Ebook "Control and prediction of solid-state of pharmaceuticals: Experimental and computational approaches" investigates a range of experimental and computational approaches for the discovery of solid forms. Furthermore, we gain, as readers, a better understanding of the key factors underpinning solid-structure and diversity. A major part of this thesis highlights experimental work carried out on two structurally very similar compounds.

267p tudohanhtau1006 29-03-2024 4 1   Download

Ebook "Controlled radical polymerization at and from solid surfaces" presents state-of-the art knowledge about all aspects that are important when considering controlled radical polymerization and surfaces. It is intended to guide the interested polymer chemist through the constantly increasing number of scientific studies and should help to apply this knowledge for tailoring novel surfaces.

231p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Rare-earths and actinides in high energy spectroscopy" gives a theoretical discussion of the various spectroscopic methods that shed light on the character of the f electrons and on the connection between their localization and the properties of these materials. Part 1 covers the characteristics of the f electrons in atoms and solids and includes a discussion of the properties of lanthanides and actinides in connection with the f electrons. Part 2 describes the various spectroscopic methods that are used to establish the electronic distributions and energies of the states.

393p tudohanhtau1006 29-03-2024 3 1   Download

Ebook "Creation of new metal nanoparticles and their hydrogen-storage and catalytic properties" reports the discovery of metal nanoparticles having new structures that do not exist in bulk state and that exhibit hydrogen storage ability or CO oxidation activity. Research into the reaction of hydrogen with metals has attracted much attention because of potential applications as effective hydrogen storage materials, as permeable films, or as catalysts for hydrogenation.

86p tudohanhtau1006 29-03-2024 3 1   Download

Ebook "Functional molecular silicon compounds I: Regular oxidation states" critical reviews on topics of research concerned with chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures.

242p tudohanhtau1006 29-03-2024 3 1   Download

Ebook "Functional molecular silicon compounds II: Low oxidation states" focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures.

239p tudohanhtau1006 29-03-2024 1 1   Download