Results 21 to 30 of about 819,497 (256)

Design of a Near Infrared Spectrophotometry Brain Imaging System [PDF]

, 2010
Measuring brain activity is at task generally left for EEG or fMRI. However, there is a lesser known imaging technique known as near infrared spectrophotometry, in which near infrared light is shown into the patients head to measure changes in ...
Basuta, Sukneet
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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

Speech therapy changes blood circulation and oxygenation in the brain and muscle: a near-infrared spectrophotometry study [PDF]

, 2011
Recently it has been shown that artistic speech therapy (AST) has effects on heart rate variability. The aim of this pilot study was to investigate whether AST also affects hemodynamics and tissue oxygenation in the brain and skeletal muscle measured by ...
Ursula Wolf, Wolf, U, Dietrich von Bonin, Martin Wolf, von Bonin, D, Wolf, M, Wolf U, Wolf M, von Bonin D   +8 more
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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

Infrared Spectrophotometry Calibration Facilities at NIST [PDF]

, 2013
NIST’s Sensor Science Division (SSD) has recently implemented a number of improvements to its infrared spectrophotometry capabilities in support of existing and emerging requirements for higher accuracy optical property measurements of materials.
Burnett, John, Mekhontsev, Sergey, Hanssen, Leonard, Khromchenko, Vladimir, Kaplan, Simon   +4 more
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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

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 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

Clinical data on rare Sulfamethoxazole crystalluria assessed by Fourier transform infrared spectrophotometry

Data in Brief, 2018
The data contained in this article are related to the article entitled “Case report: Uncommon Sulfamethoxazole Crystalluria” (Castiglione et al., 2018).
Vincent Castiglione, Etienne Cavalier, Romy Gadisseur   +2 more
doaj   +1 more source