Results 21 to 30 of about 1,810,207 (355)

Cryo-EM structure of the potassium-chloride cotransporter KCC4 in lipid nanodiscs. [PDF]

, 2020
Cation-chloride-cotransporters (CCCs) catalyze transport of Cl- with K+ and/or Na+across cellular membranes. CCCs play roles in cellular volume regulation, neural development and function, audition, regulation of blood pressure, and renal function.
Brohawn, Stephen Graf, Kern, David M, Reid, Michelle S   +2 more
core   +2 more sources

Evaluation of Data Quality on the Detection of Heavy Metals in Soils by Atomic Absorption Spectrometry or Atomic Fluorescence Spectrometry and X-ray Fluorescence Spectrometry in Ecological Environment Monitoring

Yankuang ceshi, 2019
BACKGROUND In current ecological environmental monitoring, the standard methods used to determine the total contents of inorganic elements, such as heavy metals in soil, include atomic absorption spectrometry (AAS), atomic fluorescence spectrometry (AFS)
TIAN Zhi-ren, FENG Xue, JIANG Xiao-xu, LI Zong-chao, LI Yu, XIA Xin   +5 more
doaj   +1 more source

APPLICATION OF TOTAL-REFLECTION X-RAY FLUORESCENCE SPECTROMETRY (TXRF) TO GEOLOGICAL OBJECTS: EXPERIENCE OF THE TXRF LABORATORY, CENTER FOR GEODYNAMICS AND GEOCHRONOLOGY

Геодинамика и тектонофизика, 2022
Unlike conventional X-ray fluorescence spectrometry, the total-reflection X-ray fluorescence spectrometry is not a widespread and routine method for analyzing solid samples with mineral matrix, but it has a great potential for geochemical, geological ...
A. S. Maltsev, G. V. Pashkova
doaj   +1 more source

Co-populated Conformational Ensembles of β(2)-Microglobulin Uncovered Quantitatively by Electrospray Ionization Mass Spectrometry [PDF]

, 2004
Ordered assembly of monomeric human β(2)-microglobulin (β(2)m) into amyloid fibrils is associated with the disorder hemodialysis-related amyloidosis. Previously, we have shown that under acidic conditions (pH
Bjorkman, Cech, Chiti, Chiti, Chowdhury, Dobo, Dobson, Esposito, Felitsyn, Fenn, Fenn, Floege, Ganem, Gejyo, Gejyo, Gorevic, Goto, Grandori, Grandori, Hill, Hoshino, Jones, Kad, Kad, Kaltashov, Karlsson, Katou, Khan, Konermann, Konermann, Kraulis, Mayer, McParland, McParland, Mirza, Morgan, Ohashi, Pitkanen, Robinson, Samalikova, Samalikova, Saper, Selkoe, Siuzdak, Smith, Wanker, Yamaguchi   +46 more
core   +1 more source

Determination of Manganese Content in Soils and Sediments by X-ray Fluorescence Spectrometry

Yankuang ceshi, 2020
OBJECTIVES Due to the advantages of simple sample preparation, non-destructive determination, and rapid detection, the X-ray fluorescence spectrometry technique has become a robust method for determination of manganese in soil or sediment.
CHEN Chun-fei, HONG Xin, WANG Xiao-fei, SU Rong, LIANG Xiao-xi, HE Yu, LU Qiu, TIAN Yan   +7 more
doaj   +1 more source

Determination of Trace Mercury in Rocks by Dual-channel Atomic Fluorescence Spectrometry and Solid Sampling-Cold Atomic Absorption Spectrometry

Yankuang ceshi, 2021
BACKGROUND The detection of trace mercury in rocks typically provides biased and non-reliable results because of the complex internal unit cell structure, incomplete hot water bath acid hydrolysis extraction, volatilization loss, and contact pollution ...
LIN Jian-qi
doaj   +1 more source

Identification of senescence and death in Emiliania huxleyi and Thalassiosira pseudonana: Cell staining, chlorophyll alterations, and dimethylsulfoniopropionate (DMSP) metabolism [PDF]

, 2012
We measured membrane permeability, hydrolytic enzyme, and caspase-like activities using fluorescent cell stains to document changes caused by nutrient exhaustion in the coccolithophore Emiliania huxleyi and the diatom Thalassiosira pseudonana, during ...
Airs, Ruth L., Bell, Thomas G., Berges, John A., Bongaerts, Roy J., Fernandes, Michelle, Franklin, Daniel J., Malin, Gill   +6 more
core   +1 more source

Identification of Heat-Treated Sapphires from Sri Lanka: Evidence from Three-Dimensional Fluorescence Spectroscopy

Crystals, 2022
Heat treatment is an important method used to improve the value of sapphires. The identification of heat-treated sapphires is a significant and challenging subject in gemology.
Yuyang Zhang, Meihua Chen
doaj   +1 more source

Structural Plasticity and Noncovalent Substrate Binding in the GroEL Apical Domain. A study using electrospray ionization mass spectrometry and fluorescence binding studies [PDF]

, 2002
Advances in understanding how GroEL binds to non-native proteins are reported. Conformational flexibility in the GroEL apical domain, which could account for the variety of substrates that GroEL binds, is illustrated by comparison of several independent ...
Adams, Boisvert, Braig, Braig, Brinker, Brocchierei, Brunger, Brunger, Buckle, Bukau, Chatellier, Chatellier, Chatellier, Chen, Collaborative Computational Project, N., Coyle, Dessauer, Ewalt, Feltham, Fenton, Ferrige, Grallert, Hartl, Hartl, HayerHartl, Hemmingsen, Hlodan, Houry, Hunt, Hutchinson, Jancarik, Jones, Jones, Kobayashi, Konermann, Kraunsoe, Kusmierczyk, Landry, Landry, Leslie, Loo, Ma, Murshudov, Navaza, Pace, Pflugrath, Ploegman, Raftery, Ranson, Robinson, Romano, Roseman, Rye, Sigler, Smith, Smote, Tanaka, Wang, Weber, Weber, Weissman, Xu, Zahn   +62 more
core   +1 more source

Fluorescence fingerprints as a rapid predictor of the nutritional quality of processed and stored foods

Czech Journal of Food Sciences, 2004
Foods are complex mixtures of macro- and micronutrients, which interact leading to oxidation, glycation and hydrolysis upon heating (sterilization, cooking) and storage.
I. Birlouez-Aragon, P. A Mas, L. Ait Ameur, N. Locquet, E. De St Louvent, M. Zude   +5 more
doaj   +1 more source