Results 11 to 20 of about 50,725 (202)

Transit spectrophotometry of the exoplanet HD189733b. I. Searching for water but finding haze with HST NICMOS [PDF]

open access: yes, 2009
We present Hubble Space Telescope near-infrared transit photometry of the nearby hot-Jupiter HD189733b. The observations were taken with the NICMOS instrument during five transits, with three transits executed with a narrowband filter at 1.87 microns and
A. Lecavelier des Etangs   +50 more
core   +3 more sources

Karakterisasi Senyawa Minyak Atsiri Ekstrak Etil Asetat Bawang Putih (allium sativum l.)

open access: yesIndonesian Journal of Pharmaceutical Education, 2021
Garlic (Allium sativum L.) is one of tuber vegetable crops that is widely grown in various countries in the word and is often used as food spices and medicines. The purpose of this study was to characterize the volatile oil compound ethyl acetate extract
Muhammad Taupik   +3 more
doaj   +1 more source

Synthesis and virtual screening of bis-(4-(tert-butyl)-N-(methylcarbamothioyl) benzamide)-Iron (III) complex as an anticancer candidate [PDF]

open access: yesPharmaciana, 2021
Thiourea derivatives were much used in drug discovery and drug-making, such as for an anticancer. The formation of drug complexes can increase lipophilicity through chelation formation, and the drug action is significantly upward due to the effective ...
Ruswanto Ruswanto   +3 more
doaj   +1 more source

Bispectrum speckle interferometry observations and radiative transfer modelling of the red supergiant NML Cyg: Multiple dust-shell structures evidencing previous superwind phases [PDF]

open access: yes, 2001
(abridged) NML Cyg is a highly evolved OH/IR supergiant and supposed to be among the most luminous supergiants in the galaxy. We present the first diffraction limited 2.13micron observations of NML Cyg with 73mas resolution.
Benson   +72 more
core   +2 more sources

Application of Fourier Transform Infrared Spectrophotometry Method for Analysis of Metformin Hydrochloride in Marketed Tablet Dosage Form

open access: yesJurnal Kimia Valensi, 2021
The first line drug given for monotherapy for diabetes mellitus type 2 is metformin hydrochloride, which is a biguanide antihyperglycemic drug. The aim of this research was to develop, validate, and apply the Fourier Transform Infrared spectrophotometry ...
Nerdy Nerdy   +7 more
doaj   +1 more source

Determination of Vitamin C in Foods Using the Iodine-Turbidimetric Method Combined with an Infrared Camera

open access: yesApplied Sciences, 2020
A novel method was proposed for the determination of vitamin C (VC) using an infrared camera combined with the iodine-turbidimetric method. Based on the redox between VC and iodine, the residual iodine was measured using the turbidimetric method with an ...
Yi Miao   +7 more
doaj   +1 more source

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

open access: yes, 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.   +3 more
core   +4 more sources

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

open access: yes, 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.   +4 more
core   +2 more sources

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

open access: yesJournal 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

Oleochemicals I: Studies on the preparation and the structure of lithium soaps.

open access: yesGrasas y Aceites, 1999
Lithium stéarate, palmitate, myristate, laurate, caprate and caprylate were prepared by means of fusion method. Elementary analysis and the infrared absorptions spectra of the prepared lithium soaps as well as their X-ray diffractions and the ...
Zein E. Shoeb   +2 more
doaj   +1 more source

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