Results 51 to 60 of about 55,459 (323)

Quantitative determination of dexamethasone sodium phosphate in bulk and pharmaceuticals at suitable pH values using the spectrophotometric method

Journal of Advanced Pharmaceutical Technology & Research, 2021
Dexamethasone sodium phosphate (DSP) is an ester of dexamethasone with anti-inflammatory action. This study provides new insights to develop a simple, precise, and accurate spectrophotometric method for the quantitative determination of DSP in bulk and ...
Mohammed Fanokh Al-Owaidi, Sura L Alkhafaji, Abdulbari Mahdi Mahood   +2 more
doaj   +1 more source

Spectral Properties From Lyman-alpha to H-alpha For An Essentially Complete Sample of Quasars I: Data [PDF]

Astron.J.134:294-313,2007, 2007
We have obtained quasi-simultaneous ultraviolet-optical spectra for 22 out of 23 quasars in the complete PG-X-ray sample with redshift, z<0.4, and M_B<-23. The spectra cover rest-frame wavelengths from at least Lyman-alpha to H-alpha. Here we provide a detailed description of the data, including careful spectrophotometry and redshift determination.
arxiv   +1 more source

On the use of ultraviolet photography and ultraviolet wing patterns in butterfly morphology and taxonomy [PDF]

, 2000
In a series of feeding experiments we found that, depending on the larval food plant species or part of food plant ingested, individuals of the blue butterfly Polyommatus icarus (Lycaenidae) exhibit broad variation of wing patterns in the ultraviolet (UV)
Fiedler, Konrad, Knüttel, Helge
core  

Sustainable Smart Packaging from Protein Nanofibrils

Advanced Materials, EarlyView.
Smart packaging can extend shelf life and improve food quality monitoring. This study introduces a novel smart packaging solution using amyloid fibrils and red radish anthocyanins to monitor seafood spoilage. These findings show that these films effectively indicate shrimp freshness and possess high antibacterial and antioxidant properties, offering a ...
Mohammad Peydayesh, Alan Kovacevic, Leah Hoffmann, Felix Donat, Ciatta Wobill, Laura Baraldi, Jiangtao Zhou, Christoph R. Müller, Raffaele Mezzenga   +8 more
wiley   +1 more source

Electrochemically activated polyaniline based ambipolar organic electrochemical transistor

Electrochemical Science Advances, Volume 2, Issue 6, December 2022., 2022
Abstract The organic electrochemical transistors (OECTs) are largely applied as bio‐ and ion‐sensor devices due to their performance in an aqueous environment with electrochemical doping/dedoping (reversible redox reactions) of the semiconducting layer through ion injection and also low (around 1 V) operation potentials.
Hugo José Nogueira Pedroza Dias Mello, Murilo Calil Faleiros, Marcelo Mulato   +2 more
wiley   +1 more source

Determination of Nicotine in Libyan Smokers and Nonsmokers’ Urine samples by Ultraviolet-Visible Spectrophotometry

مجلة العلوم البحتة والتطبيقية, 2020
This study was aimed to determine the nicotine in Libyan smokers and nonsmokers ’urine. Twenty urine samples are collected from smokers and nonsmokers. Each volunteer was required to complete a questionnaire before providing the urine sample. The samples
Galal M. Elmanfe, Suad K. Omar , Ahmad B. Eznien
doaj   +1 more source

A new method for the separation of androgens from estrogens and for the partition of estriol from the estrone-estradiol fraction: with special reference to the identification and quantitative microdetermination of estrogens by ultraviolet absorption spectrophotometry [PDF]

, 1948
It is recognized generally that a qualitative and quantitative knowledge of the excretion pattern of the urinary estrogens is one index to an understanding of the functional activity of the ovary and adrenal cortex.
Friedgood, Harry B., Garst, Josephine B., Haagen-Smit, A. J.   +2 more
core  

Convection, Thermal Bifurcation, and the Colors of A stars [PDF]

, 1997
Broad-band ultraviolet photometry from the TD-1 satellite and low dispersion spectra from the short wavelength camera of IUE have been used to investigate a long-standing proposal of Bohm-Vitense that the normal main sequence A- and early-F stars may ...
Balona L. A., Berthet S., Boggess A., Bohlin R. C., Bohlin R. C., Bohm-Vitense E., Bohm-Vitense E., Bohm-Vitense E., Bohm-Vitense E., Cayrel R., Coupry M. F., Dravins D., Edvardsson B., Garhart M. P., Garhart M. P., Garhart M. P., Hauck B., Hilditch R. W., Kjeldsen H., Lane M. C., Lemke M., Lopez de Coca P., Malaise F., Mantegazza L., Monier R., Moon T. T., Napiwotzki R., Nichols J. S., Nordlund, Oliversen N., Saxner M., Simon T., Smalley B., Smalley B., Smalley B., Theodore Simon, Veer-Menneret C., Veer-Menneret C., Wayne B. Landsman   +38 more
core   +4 more sources

Interaction of Oligonucleotides with Gold Nanoparticles: Factors Beyond Electrostatic and Van‐Der Waals Forces

Advanced Materials Interfaces, EarlyView.
The formation of stable clusters of gold nanoparticles with oligonucleotides at different solution conditions is explored. DNA base homogeneity and strand directionality influence the binding with gold nanoparticles leading to interesting clustering behavior that can be relevant for SERS applications.
Shaila Thakur, Nicola Cavallini, Debora Ferrari, Laura Fabris   +3 more
wiley   +1 more source

Assessing the growth kinetics and stoichiometry of Escherichia coli at the single‐cell level

Engineering in Life Sciences, Volume 23, Issue 1, January 2023., 2023
Abstract Microfluidic cultivation and single‐cell analysis are inherent parts of modern microbial biotechnology and microbiology. However, implementing biochemical engineering principles based on the kinetics and stoichiometry of growth in microscopic spaces remained unattained.
Katharina Smaluch, Bastian Wollenhaupt, Heiko Steinhoff, Dietrich Kohlheyer, Alexander Grünberger, Christian Dusny   +5 more
wiley   +1 more source