Results 41 to 50 of about 75,990 (168)
Yankuang ceshi, 2019 BACKGROUND The identification of natural and synthetic amethyst is still a challenge for gemological laboratories either at home or abroad. Previous studies focus on twinning, color band, inclusions and the infrared spectrum.
HUANG Wen-qing +7 more
doaj +1 more source
Raman scattering enhancement of dielectric microspheres on silicon nitride film
Scientific Reports, 2022 Circulating light in the total internal reflection within dielectric spheres or disks is called the whispering gallery mode (WGM), which by itself is highly sensitive to its surface and capable of detecting viruses and single atomic ions.
Toshihiko Ogura
doaj +1 more source
Effect of Different Cooking Methods on Quality of Salted Egg Yolk
Shipin gongye ke-jiIn this study, three cooking methods, namely baking, ultrasonic treatment and steam, were employed for cooking salted egg yolk (SEY). The effects of different cooking methods on the quality of SEY were investigated by considering moisture content, salt ...
Qianwei CHENG +6 more
doaj +1 more source
Symmetry of the Optical Phonons in LuVO4: A Raman Study
Crystals, 2020 A thorough analysis of the first-order vibrational spectrum of LuVO4 is presented by using polarized micro-Raman spectroscopy with special focus on the phonon modes with the weakest intensity and occasional controversial assignment. Group-theory analysis
Peter Rafailov +4 more
doaj +1 more source
Coordination Chemistry of Uranyl Ion with Citric Acid
Yuanzineng kexue jishuCitric acid (H3Cit), which is an important intermediate chemical in the tricarboxylic acid cycle metabolism of organisms, widely presents in nature and also is added in food and other daily necessities.
LI Zhi1, ZHANG Yan1, NASEN Buyanri1, DING Qixiu1, YANG Suliang1, WANG Chen1, , TIAN Guoxin1, 2
doaj +1 more source
Vibrational Spectroscopy Characteristics of Rare Mineral Chambersite in Jixian of Tianjin, China
Yankuang ceshi, 2018 Chambersite (Mn3B7O13Cl) is a type of rare mineral. The Chambersite deposit in Jixian, Tianjin is the only commercially valuable deposit in the world. The Chambersite particle in Jixian is very fine (50-300 nm), which is different from that of American ...
ZHANG Ran, XU Hong, LI Mei-mei
doaj +1 more source
APL PhotonicsConfocal Raman spectroscopy (CRS) has been widely used for noninvasive biochemical analysis of biological tissue in vivo. Currently, reflectance confocal microscopy (RCM) has been integrated with CRS as visual guidance for a square-/rectangular-shaped ...
Zhenguo Wu +4 more
doaj +1 more source
IEEE Photonics Journal, 2019 We introduce a field-widened spatial heterodyne Raman spectrometer with a mosaic grating structure to investigate the broadband Raman spectra of sulfates.
Jun Qiu, Xiaotian Li, Xiangdong Qi
doaj +1 more source
Coordination Chemistry of Glycolic Acid and Uranyl
Yuanzineng kexue jishuGlycolic acid (α-hydroxyacetic acid, HA) is a simple, water-soluble carboxylic acid ligand commonly found in the environment. It can coordinate with metal ions through both its carboxyl and hydroxyl oxygen atoms.
ZENG Deli1, LIU Qian1, YANG Qi1, LI Jiale1, PU Tongkai1, YANG Suliang1, TIAN Guoxin1, 2
doaj +1 more source
Density functional study of styrene
四川大学学报. 自然科学版, 2016 The molecule of styrene was investigated with the density functional theory (DFT), and the molecular geometries was optimized by using B3LYP method at different levels of basic sets.
HE Wei-Ping +3 more
doaj