Temperature effect

Part 2 of ebook "Creep and hygrothermal effects in concrete structures" provides readers with contents including: Chapter 9 - Solidification theory for aging effect on stiffness and basic creep; Chapter 10 - Microprestress-solidification theory and creep at variable humidity and temperature; Chapter 11 - Physical and statistical justifications of models B3 and B4 and comparisons to other models; Chapter 12 - Effect of cracking and fracture mechanics aspects of creep and shrinkage analysis; Chapter 13 - Temperature effect on water diffusion, hydration rate, creep and shrinkage;...

509p mothoiphong 28-06-2024 1 1   Download

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 result indicates that in the case of electron-acoustic phonon scattering, the Shubnikov-de Hass oscillation appears. Whereas, in the case of electrons-optical phonons scattering, the peak of magneto-photonphonon resonance appears. In both cases, when temperature increases, the Nernst coefficient decreases rapidly, and for electrons-optical phonons scattering, the resonance peak has a movement.

10p viambani 18-06-2024 1 1   Download

In this work, the effect of annealing temperature and Cr3+ concentration on the structural and optical properties of the SnO2 host crystals has been investigated. The Cr-doped SnO2 samples were synthesized by a simple hydrolysis method, using SnCl4.5H2O as the host precursor and CrCl3.6H2O as the source of dopant.

9p viambani 18-06-2024 1 1   Download

The pressure effect on the thermopower has been investigated for the Bi1.8Sb0.2Te3.0 alloys. We have found an anisotropic pressure dependence on the thermopower for p- and n-type Bi1.8Sb0.2Te3.0 at room temperature. Along a-axis, for p-type, the thermopower value increased with increase of pressure at a rate of 13.9 %/Gpa, whereas, along c-axis, itkeeps approximately constant..

7p viambani 18-06-2024 1 1   Download

The anharmonic thermal expansion (TE) coefficient of crystalline silver (Ag) has been calculated and analyzed in the temperature-dependent. Based on the anharmonic effective potential, the calculation model is developed using the correlated Debye model and the manybody perturbation approach.

7p viambani 18-06-2024 1 1   Download

In conventional partial resection of parenchymatous organs significant bleeding is one of the main problems, especially in neonates and infants. The patients rapidly lose considerable amounts of their small blood volume. Laser light leads to photo­ thermal effects in tissue and causes coagulation, drying up, carbonization and evaporization, depending on the temperature.

150p vimeyers 29-05-2024 4 2   Download

Ebook "Plant physiological ecology (Second edition)" provides readers with contents including: assumptions and approaches; photosynthesis, respiration, and long-distance transport; plant water relations; leaf energy budgets, effects of radiation and temperature; scaling-up gas exchange and energy balance from the leaf to the canopy level; mineral nutrition; growth and allocation;...

624p giangdongdinh 28-05-2024 1 0   Download

Part 1 book "An introduction to electrical science" includes content: SI system of measurements, electrical schematic and wiring diagrams, the 'electron theory' of electricity, electric current, potential and potential difference, resistance, resistors, conductors and cables, effect of temperature change upon resistance, Ohm's Law of constant proportionality, Series, parallel and series-parallel circuits, electrical measurements, cells and batteries, internal resistance, energy, work, heat and power.

164p dianmotminh01 20-05-2024 5 4   Download

This study focuses on evaluating the effectiveness of surface response analysis methodology in experimental design, modeling, and optimizing manufacturing conditions for the properties of PP/BCSi composite materials. Parameters including mixing temperature, mixing time, and screw speed have been carefully selected to optimize technological factors in material fabrication.

10p vijaychest 16-05-2024 2 0   Download

In the paper "Thermal buckling of P-FGM sandwich beam with porous core on elastic foundation", a coupled effect of thermal and electrical loadings on the thermal buckling behavior of functionally graded material (FGM) sandwich beam resting on Pasternak foundation is investigated. The symmetric multi-layered beam consists of a foam core, two middle FGM layers, and two outer piezoelectric layers. It is assumed that the beam is subjected to a constant voltage and a uniform/linear temperature rise.

10p dathienlang1012 03-05-2024 1 0   Download

The study results show inter-relationships and transformations of the three indicators in the research context, where urban land temperature and Urban Heat Island (UHI) are raised by built-up areas and in contrast, reduced by vegetated areas. As a result, urban green space would be a driver to mitigate the harmful impact of the "heat island" effect in urban areas. Aim to strengthen concentrated green areas and vegetation in land areas that are less favorable for construction.

11p dianmotminh02 03-05-2024 4 1   Download

The material’s structure was analyzed through X-ray diffraction and scanning electron microscopy. The fabricated materials consist of NiTiO3 with a rhombohedral phase structure and CoFe2O4 with a cubic structure. The effect of sintering temperature and dwell time on the phase, microstructure, and ferroelectric properties of the ceramics was examined.

12p dianmotminh02 03-05-2024 1 1   Download

The microdynamic mechanism of the phenomenon, which the static permittivity of sodium chloride aqueous solution with concentration of 2.8 mol/L holds constant with the change of temperature, is clarified. The equilibrium compensation between the decrement of the permittivity part due to the water molecular polarization and the increase of that originated from the ionic polarization as increasing temperature is responsible for this phenomenon. The dipole moment reduction of water molecules as rising temperature is also confirmed by the model.

6p dianmotminh02 03-05-2024 2 1   Download

The derived temperature dependences of the peak intensities, separations and half-widths of the separate spectral peaks in the A-band phonon progressions indicate the different trends for vibration-free zero-phonon electronic transition and vibration-related lower-energy electronic transitions to high vibrational levels of the ground electronic state – lower thermal damping and more softened phonon for the zero-phonon transition, also implying the extended defect origin of the A-band photoluminescence.

9p dianmotminh02 03-05-2024 3 1   Download

In this work, TiO2-doped carbon aerogel (TiO2/CA) was synthesized from sugarcane bagasse hydrothermal, freezedrying, and carbonization methods. The effects of the calcination temperatures of 400, 500, 600, 700, and 800 oC were also evaluated. The obtained TiO2/CA exhibits an ultralow density (0.021-0.032 g/cm3 ) and porosity of more than 97 %. The asprepared TiO2/CA was applied in photodegradation of methylene blue (MB) with the effects of dose sample and pH were also investigated.

11p dianmotminh02 03-05-2024 2 1   Download

A numerical study was carried out to investigate the effectiveness of the charge air cooling method on the exhaust gas emission reduction when applied to a four-stroke marine generator diesel engine at full load. The AVL FIRE 2018a software was used to perform three-dimension (3D) simulations of the combustion process and emission formations inside the engine cylinder operating with various charge air temperatures (CATs).

13p viohoyo 25-04-2024 2 1   Download

The effect of temperature on the electrical resistivity of high-performance fiber-reinforced concretes (HPFRCs) was highlighted in this investigation through an experimental approach. Generally, the temperature exhibited a considerable effect on the electrical resistivities of cement-based composites.

12p viohoyo 25-04-2024 3 2   Download

Ebook "Molecular spintronics: From organic semiconductors to self-assembled monolayers" will focus on the study of organic semiconductors spintronic devices, here Alq3-based spin valves. We will investigate magnetoresistance (MR) effects at room temperature using conventional ferromagnetic (FM) materials. These investigations were done wishing to improve the understanding on the two interfaces and disentangle their contributions on the spin polarization properties of the devices.

191p tracanhphuonghoa1007 22-04-2024 3 2   Download

Part 1 book "Chemical engineering kinetics" includes content: Introduction, kinetics of homogeneous reactions, design fundamentals, homogeneous reactor design, temperature effects in homogeneous reactors, deviations from ideal reactor performance, heterogeneous reactors.

295p muasambanhan10 11-04-2024 3 1   Download