Results 11 to 20 of about 658,124 (263)
Effect of Hydration Temperature Rise Inhibitor on the Temperature Rise of Concrete and Its Mechanism. [PDF]
Materials (Basel), 2023 The rapid drop in internal temperature of mass concrete can readily lead to temperature cracks. Hydration heat inhibitors reduce the risk of concrete cracking by reducing the temperature during the hydration heating phase of cement-based material but may reduce the early strength of the cement-based material.
Liang T +5 more
europepmc +3 more sources
Effect of Microencapsulated Temperature Rise Inhibitor on the Temperature Rise of Medium-Sized Concrete. [PDF]
Materials (Basel)This study investigates the effect of microencapsulated temperature rise inhibitors (TRIs) on the hydration temperature evolution and crack resistance of medium-sized concrete structures. Unlike mass concrete, medium-sized concrete elements such as beams, slabs, and columns pose unique challenges in temperature control due to their moderate volume ...
Zhang Y +5 more
europepmc +3 more sources
Do rising temperatures matter [PDF]
Ecology, 2009 Relationships between the environment and population dynamics in ecology have a long history of polarized debates usually involving two alternative and opposite explanations that exclude each other. One of the best known examples is found in the early question of what regulates populations and the role of extrinsic vs.
Pascual, Mercedes, Bouma, Menno J.
openaire +3 more sources
Afterword: Rising temperatures
The Geographical Journal, 2022 AbstractThis piece reviews the contributions of this special edition noting comments and insights into the rapidly changing politics of the Arctic. It highlights how the recent Russian invasion of Ukraine has had a profound impact on the High North, its peoples and its security.
Caroline Kennedy‐Pipe, Duncan Depledge
openaire +1 more source
Stomatal conductance increases with rising temperature [PDF]
Plant Signaling & Behavior, 2017 Stomatal conductance directly modifies plant water relations and photosynthesis. Many environmental factors affecting the stomatal conductance have been intensively studied but temperature has been largely neglected, even though it is one of the fastest changing environmental variables and it is rising due to climate change.
Urban, Josef Josefovich +3 more
openaire +4 more sources
Probe on temperature rise test of mine-used switch devices
Gong-kuang zidonghua, 2014 Combining with related standards and actual work experience, the paper introduced temperature rise test method of circuit for mine-used switch electrical products, connecting wire method of temperature rise test, temperature rise test methods for ...
LI Ya
doaj +1 more source
Wavelength of Experimental LEDS: Hardness, Elastic Modulus, Degree of Conversion and Temperature Rise of a Microhybrid Composite [PDF]
Materials Research, 2015 The aim of this study was to evaluate the effect of different peak wavelengths (450nm, 468nm and 490nm) of experimental LEDs on hardness, elastic modulus, degree of conversion and temperature rise of a microhybrid resin composite – Venus® (Heraeus Kulzer)
Ana Paula Bonilauri Ferreira +5 more
doaj +1 more source
The Geographical Journal, 2022 AbstractAs an introduction to a special section on remote politics in the Arctic. We introduce how the various authors have analysed the consequences of a warming Arctic for the peoples who inhabit it and for those states seeking to retain or expand influence in this resource‐rich region.
Caroline Kennedy‐Pipe, Duncan Depledge
openaire +1 more source
Oil-Cooling Method of the Permanent Magnet Synchronous Motor for Electric Vehicle
Energies, 2019 The typical motor has poor heat dissipation conditions that are limited by the installation space and working environment, and the high operation temperature increase has been a bottleneck to improve the power density and torque density.
Fulai Guo, Chengning Zhang
doaj +1 more source
Influence of harmonic on loss and temperature rise of mine-used dry-type transformer
Gong-kuang zidonghua, 2016 In order to accurately analyze influence of harmonic on loss and temperature rise of transformer, a two-dimensional model of dry-type transformer was established firstly, and leakage magnetic field and harmonic loss in the dry-type transformer were ...
ZHU Jingjing +3 more
doaj +1 more source