Results 31 to 40 of about 46,382 (297)

Cosmic Histories of Stars, Gas, Heavy Elements, and Dust [PDF]

, 1998
We present a set of coupled equations that relate the stellar, gaseous, chemical, and radiation constituents of the universe averaged over the whole galaxy population. Using as input the available data from quasar absorption-line surveys, optical imaging
Armand C., Boisse P., Cole S., Cowie L. L., Desert F. X., Ellis R. S., Kauffmann G., Kauffmann G., Le Brun V., Levshakov S. A., Lilly S. J., Madau P., Michael G. Hauser, Puget J.-L., S. Michael Fall, Schelgel D. J., Storrie-Lombardi L. J., Storrie-Lombardi L. J., Tinsley B. M., Yichuan C. Pei   +19 more
core   +3 more sources

A Smartphone-Based Sensor With an Uncooled Infrared Thermal Camera for Accurate Temperature Measurement of Pig Groups

Frontiers in Physics, 2022
Low-cost uncooled infrared thermal cameras show a large application potential for the rapid diagnosis of pig diseases. However, with the increase in ambient temperature and absorbing infrared radiation, almost all of them produce severe thermal drift and
Fu Jiao, Fu Jiao, Kun Wang, Feng Shuang, Daming Dong, Leizi Jiao   +5 more
doaj   +1 more source

Emissivity measurements of reflective surfaces at near-millimeter wavelengths [PDF]

, 1995
We have developed an instrument for directly measuring the emissivity of reflective surfaces at near-millimeter wavelengths. The thermal emission of a test sample is compared with that of a reference surface, allowing the emissivity of the sample to be ...
Bock, J. J., Fischer, M. L., Lange, A. E., Parikh, M. K.   +3 more
core   +1 more source

The Design of the Infrared Spectrally Selective Low Emissivity Coating [PDF]

Advances in Physics Research, 2014
The traditional low infrared emissivity materials do not have the infrared spectrally se lective low emissivity characteristic, it brings the problem of compatibility of the infrared stealth and heat radiation. With the help of the one-dimensional photonic crystal(1DPC), selecting the infrared window material Ge and MgF2 to compose the 1DPC, and ...
Wen-Wei Zheng, Jun-Sheng Li, Liang Peng
openaire   +1 more source

Preparation and Characterization of High-Performance Composite Coatings Compatible with Near-Infrared Low Reflectivity and Low Infrared Emissivity

Coatings, 2023
Polyurethane (PU)/Al-graphene composite coating with low infrared emissivity, a low near-infrared reflectivity of 1.06 μm, and satisfactory mechanical properties was prepared by using Al powder and graphene as composite pigments and PU as a binder, respectively.
Yueting Zhuang, Weigang Zhang, Qianfeng Zhang   +2 more
openaire   +1 more source

Theoretical Spectra of Terrestrial Exoplanet Surfaces [PDF]

, 2012
We investigate spectra of airless rocky exoplanets with a theoretical framework that self-consistently treats reflection and thermal emission. We find that a silicate surface on an exoplanet is spectroscopically detectable via prominent Si-O features in ...
Batalha, Best, Bethany L. Ehlmann, Borucki, Borucki, Cheek, Clark, Clark, Cochran, Cowan, de Pater, Drilling, Farmer, Gautier, Koch, Miller-Ricci, Muirhead, Pieters, Pieters, RELAB Spectral Database, Renyu Hu, Rogers, Salisbury, Sara Seager, Seager, Seager, Sobolev, Sprague, Winn   +28 more
core   +2 more sources

Effect of preparation process of aluminum oxide thin films on high temperature barrier performance

Journal of Aeronautical Materials
With the rapid development of detection technology，the demand for infrared stealth performance in weapons and equipment is increasing，especially the urgent need to suppress the infrared radiation signal of high-temperature components. Pt metal films have
LIU Pengrui, BAO Tianjiao, ZHANG Tong, ZHANG Yafa, WANG Haosen   +4 more
doaj   +1 more source

Fabrication of Selective Thermal Emitter with Multilayer Films for Mid-/Low-Temperature Infrared Stealth with Radiative Cooling

Photonics, 2023
Infrared selective emitters are attracting more and more attention due to their modulation ability of infrared radiance, which provides an efficient ability to blend objects into the surrounding environment. In this paper, an Ag/ZnS/Si/Ag/Si multilayered
Mengdan Qian, Qingqing Shi, Lin Qin, Jinlong Huang, Caixia Guo, Yufang Liu, Kun Yu   +6 more
doaj   +1 more source

Effect of Preparation Process Parameters on the Infrared Emissivity of Fluorocarbon Resin/Aluminum Powder Coatings [PDF]

Cailiao Baohu
In order to obtain coatings with low emissivity, most studies focus on the screening of resin and filler components. However, the influence of process parameters on emissivity during the coating preparation process was rarely studied, and the interaction
MA Chuang, WANG Zhen, WANG Xinyu, FENG Zenghui, WANG Xingli, LIU Lanxuan
doaj   +1 more source

Manipulation of Spatial Infrared Emission Based on W‐Doped Vanadium Oxide Films toward Thermal Coding

Advanced Materials Interfaces, 2023
Active thermal radiation control of an object requires adaptive and flexible strategies to cope with emissivity engineering and its temperature dependence.
Laihao Lou, Tongtong Kang, Maoren Wang, Wenxin Li, Lei Bi, Li Zhang, Longjiang Deng, Peiheng Zhou   +7 more
doaj   +1 more source