Results 11 to 20 of about 51,555 (264)

Measurement of serum triglycerides by thin-layer chromatography and infrared spectrophotometry*

Journal of Lipid Research, 1963
A direct and nondestructive method for the quantitative determination of serum or plasma triglycerides has been developed. The lipid extract of 1 ml of serum is chromatographed on I-mm wet-thickness silicic acid layers prepared from a water–acetone ...
Kenneth Krell, Sami A. Hashim
doaj   +1 more source

First Results from the rapid-response spectrophotometric characterization of Near-Earth Objects [PDF]

, 2019
As part of our multi-observatory, multi-filter campaign, we present \rmi color observations of 82 Near-Earth Objects (NEOs) obtained with the RATIR instrument on the 1.5m robotic telescope at the San Pedro Martir's National Observatory in Mexico.
Axelrod, Tim, Butler, Nathaniel, Jedicke, Robert, Mommert, Michael, Moskovitz, Nicholas, Navarro-Meza, Samuel, Pichardo, Barbara, Reyes-Ruiz, Mauricio, Trilling, David   +8 more
core   +2 more sources

Fourier transform infrared spectrophotometry and X-ray powder diffractometry as complementary techniques in characterizing clay size fraction of kaolin

Journal of Applied Sciences and Environmental Management, 2005
This study aimed at demonstrating complementary roles offered by both Fourier transform infrared (FTIR) spectrophotometry and x-ray powder diffraction (XRPD) techniques in characterizing clay size fraction of kaolins.
Georges-Ivo E Ekosse
doaj   +1 more source

Synthesis of silver nanoparticles using plant extracts from Erythrina abyssinica aerial parts and assessment of their anti-bacterial and anti-oxidant activities

Results in Chemistry, 2022
In the present study, silver nanoparticles were synthesized using Erythrina abyssinica aerial parts as both reducing and capping agents. Three extracts were obtained from the plant using methanol, acetone and water.
Netai Mukaratirwa-Muchanyereyi, Cecilia Gusha, Munyaradzi Mujuru, Upenyu Guyo, Stephen Nyoni   +4 more
doaj   +1 more source

Synthesis, Characterization and Antimicrobial Activities of Copper-Tea Leaves (Camellia Sinensis) Extract Nanoparticles.

Journal of Nigerian Society of Physical Sciences, 2022
Nanoparticles, NPs synthesis has gained attention recently due to their ease of preparation (especially green synthesis), availability of raw materials and usefulness. The green synthesis of copper nanoparticles (CuNPs) was done using Tea leaves extract-
Boniface Tersoo Iorhuna, Timothy Tertsea Awuhe, Igbalagh Chia Azuaga, Ernest Isaac, Faisal Shuaibu, Banwala Yohanna   +5 more
doaj   +1 more source

An Infrared Standard Curve Method for Calculating the Total Amount of Petroleum in Environmental Samples

Yankuang ceshi, 2022
BACKGROUND Petroleum oil is one of the necessary indicators for environmental monitoring, which mainly exists in the form of hydrocarbons. Therefore, infrared spectrophotometry is one of the most reliable methods to determine the total amount of ...
AN Caixiu, LIU Shuhong, SHI Huiqing, YANG Lijuan, HE Yantao, CHEN Yang   +5 more
doaj   +1 more source

The timing and location of dust formation in the remnant of SN 1987A [PDF]

, 2014
The discovery with the {\it Herschel Space Observatory} of bright far infrared and submm emission from the ejecta of the core collapse supernova SN\,1987A has been interpreted as indicating the presence of some 0.4--0.7\,M$_\odot$ of dust.
Barlow, M. J., Ercolano, B., Matsuura, M., Wesson, R.   +3 more
core   +4 more sources

Simultaneous determination of triglycerides and cholesterol esters in serum by infrared spectrophotometry

Journal of Lipid Research, 1964
With the use of a high-resolution grating infrared spectrophotometer, it is possible to analyze mixtures of cholesterol esters and triglycerides on the basis of the difference in their ester carbonyl absorption frequencies.
Norman K. Freeman
doaj   +1 more source

The high-field polar RX J1007.5-2017 [PDF]

, 2012
We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoidal modulation of the secondary star in an extended low state.
Beuermann, K., Burwitz, V., Reinsch, K., Schwope, A. D., Thomas, H. -C.   +4 more
core   +2 more sources

The effect of constitutive pigmentation on the measured emissivity of human skin.

PLoS ONE, 2020
BackgroundThe measurement of body temperature has become commonplace in the current COVID-19 pandemic. Body temperature can be measured using thermal infrared imaging, a safe, non-contact method that relies on the emissivity of the skin being known to ...
Matthew Charlton, Sophie A Stanley, Zoë Whitman, Victoria Wenn, Timothy J Coats, Mark Sims, Jonathan P Thompson   +6 more
doaj   +1 more source