scholarly journals Physical, chemical, and optical properties of regional hazes dominated by smoke in Brazil

1998 ◽  
Vol 103 (D24) ◽  
pp. 32059-32080 ◽  
Author(s):  
Jeffrey S. Reid ◽  
Peter V. Hobbs ◽  
Ronald J. Ferek ◽  
Donald R. Blake ◽  
J. Vanderlei Martins ◽  
...  
2021 ◽  
Author(s):  
Alagan Muthurasu ◽  
V GANESH

Carbon dots (CDs) exhibiting fluorescence property are generally derived from carbonaceous materials and possessing ultra small size with various exciting physical, chemical and photo-properties that have been used in many...


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nguyen Thi Han ◽  
Vo Khuong Dien ◽  
Ming-Fa Lin

AbstractLi2SiO3 compound exhibits unique electronic and optical properties. The state-of-the-art analyses, which based on first-principle calculations, have successfully confirmed the concise physical/chemical picture and the orbital bonding in Li–O and Si–O bonds. Especially, the unusual optical response behavior includes a large red shift of the onset frequency due to the extremely strong excitonic effect, the polarization of optical properties along three-directions, various optical excitations structures and the most prominent plasmon mode in terms of the dielectric functions, energy loss functions, absorption coefficients and reflectance spectra. The close connections of electronic and optical properties can identify a specific orbital hybridization for each distinct excitation channel. The presented theoretical framework will be fully comprehending the diverse phenomena and widen the potential application of other emerging materials.


1898 ◽  
Vol 63 (389-400) ◽  
pp. 54-56

The nature of the hard polished outer layer of the teeth of this group of fishes has been from time to time a subject of discussion, some authors holding that it is enamel, whilst others deny its claim to be so styled. The author describes its physical, chemical, and histological peculiarities, calling attention to its hardness, its optical properties, its almost entire solubility in weak acids, and to its tubularity, in all of which respects it resembles unquestionably an enamel.


2010 ◽  
Vol 39 (1) ◽  
pp. 2-9 ◽  
Author(s):  
Yasuhito Koyama ◽  
Kazuko Nakazono ◽  
Hideki Hayashi ◽  
Toshikazu Tataka

2020 ◽  
Author(s):  
Yesol Cha ◽  
Chang-Keun Song

<p>To meet public concerns of health caused by the high concentration of PM highly raised, this research has been done to find out unique physical, chemical, and optical characteristics of aerosols in the case of recent four years high PM concentration events over the East Asian region, especially in Korea and China. Severe air pollution over the East Asian region has occurred by the rapid development of urban areas and industrialization. Also, the meteorological conditions in East Asia are strongly correlated with a high concentration of air pollution and seasonal variation of aerosols. There are three types of aerosol properties (physical, chemical, and optical property), and each property is essential to understand the characteristics of regional and seasonal high PM concentrations. This research has been done to find out unique physical, chemical, and optical characteristics of aerosols in the case of high PM concentration events, especially in two super-mega cities (Seoul and Beijing) of Korea and China, by using various observations measured during recent four years. To analyze those characteristics of aerosols at high concentration events occur, various measurement data are used, like ambient surface air monitoring data (for physical properties) from national network in both Korea and China, Intensive Monitoring Data (for chemical properties), AERONET, GOCI satellite (for optical properties), and meteorological data during recent years (2015 – 2018). This study can provide observational evidence to confirm that each different region has different physical, chemical and optical characteristics of aerosol with the different time periods. The comprehensive results analyzed from this study and integrated methodologies suggested in this study might be useful to make a better in-depth understanding of the relations between various aerosol properties in certain regions and periods.</p><p> </p><p> </p><p><strong>Key words : </strong>Aerosol, High concentration events, Physical/Chemical/Optical Properties of aerosols</p>


Nanoscale ◽  
2021 ◽  
Author(s):  
Angus Gale ◽  
Johannes Froech ◽  
Mehran Kianinia ◽  
James Bishop ◽  
Igor Aharonovich ◽  
...  

Ion implantation underpins a vast range of devices and technologies that require precise control over the physical, chemical, electronic, magnetic and optical properties of materials. A variant termed “recoil implantation”...


2012 ◽  
Vol 626 ◽  
pp. 324-328 ◽  
Author(s):  
Chuo Ann Ling ◽  
Shahrom Mahmud ◽  
Khadijah Mohd Bakhori Siti ◽  
Sirelkhatim Amna ◽  
Mohamad Dasmawati ◽  
...  

Nanomaterials have attracted much attention for their unique properties and promising performance compared to macroscopic materials. Nanotechnology refer to the cutting-edge approach of synthesis and modification of nanomaterials whose structures exhibit novel and improved physical, chemical, biological properties and functionality due to their nanoscaled size [1-2]. The ongoing revolution of the technology has imposed significant impact into several areas of biomedical research and engineering applications. Among the biomedical application include nanoparticle drug delivery, cell imaging, and cancer therapy.


2009 ◽  
Vol 114 (1) ◽  
pp. 295-299 ◽  
Author(s):  
Meng Wang ◽  
Lixia Yi ◽  
Youkuo Chen ◽  
Chunlei Yu ◽  
Guonian Wang ◽  
...  

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