Results 91 to 100 of about 2,521,534 (183)

Thin-layer chromatographic separation of sulfated and nonsulfated lithocholic acids and their glycine and taurine conjugates

Journal of Lipid Research, 1975
A method for superior thin-layer chromatographic separation of lithocholic acid and its N-glycine and N-taurine conjugates, as well as their respective 3α-sulfates, is described.
O.W. Cass, A.E. Cowen, A.F. Hofmann, S.B. Coffin   +3 more
doaj   +1 more source

[Determination of boric acid and silicic acid in mineral water by nonsuppressed ion chromatography]. [PDF]

Se Pu, 2023
Yang Z, Zhang F, Han C, Zheng H.
europepmc   +1 more source

Multielemental Analysis in Rice Grains by Total Reflection X‐Ray Fluorescence

X-Ray Spectrometry, Volume 55, Issue 5, Page 743-753, September/October 2026.
ABSTRACT Rice ( Oryza sativa ) is a staple food cultivated worldwide and represents a significant source of essential nutrients for humans. However, this cereal may also contain potentially toxic elements including chromium, arsenic, and lead typically present at trace concentrations (ng.g−1).
F. T. S. Tsuyama, R. G. Leitão, C. G. L. Canellas, G. C. Ferreira, J. L. Pereira, R. S. Santos, J. T. Assis, D. F. Oliveira, M. J. Anjos   +8 more
wiley   +1 more source

Lithiated porous silicon nanowires stimulate periodontal regeneration

Nature Communications
Periodontal disease is a significant burden for oral health, causing progressive and irreversible damage to the support structure of the tooth. This complex structure, the periodontium, is composed of interconnected soft and mineralised tissues, posing a
Martti Kaasalainen, Ran Zhang, Priya Vashisth, Anahid Ahmadi Birjandi, Mark S’Ari, Davide Alessandro Martella, Mark Isaacs, Ermei Mäkilä, Cong Wang, Evelin Moldenhauer, Paul Clarke, Alessandra Pinna, Xuechen Zhang, Salman A. Mustfa, Valeria Caprettini, Alexander P. Morrell, Eileen Gentleman, Delia S. Brauer, Owen Addison, Xuehui Zhang, Mads Bergholt, Khuloud Al-Jamal, Ana Angelova Volponi, Jarno Salonen, Nicole Hondow, Paul Sharpe, Ciro Chiappini   +26 more
doaj   +1 more source

Differential expression of the multiplicated silicon transporter genes at different stages of morphogenesis of daughter frustule of the freshwater diatom Ulnaria acus

Acta Biologica Sibirica
Diatoms are known for their unique ability to form species-specific silicon exoskeletons (shells) richly decorated with various ornaments, outgrowths, and holes.
Artem M. Marchenkov, Yulia R. Zakharova, Darya P. Petrova   +2 more
doaj   +1 more source

Method for removal of surface-active impurities and calcium from conjugated bile salt preparations: comparison with silicic acid chromatography.

Journal of Lipid Research, 1995
Some commercial preparations of common natural conjugated bile salts contain impurities (e.g., amines, lipids, and calcium) that are likely to affect their physicochemical properties. A method was developed for purifying commercial preparations of sodium
S. Del Vecchio, J.D. Ostrow, P. Mukerjee, H.T. Ton-Nu, C.D. Schteingart, A.F. Hofmann, C. Cerrè, A. Roda   +7 more
doaj   +1 more source

Improving the Durability of Lime Finishing Mortars by Modifying Them with Silicic Acid Sol. [PDF]

Materials (Basel), 2022
Loganina V, Davydova O, Fediuk R, Amran M, Klyuev S, Klyuev A, Sabitov L, Nabiullina K.   +7 more
europepmc   +1 more source

Projected AMOC Weakening Controls Future Diatom Decline in the Subpolar North Atlantic Ocean

Earth's Future, Volume 14, Issue 9, September 2026.
Abstract Climate models consistently project a decline in diatom net primary production (NPP) under high‐emission scenarios in the highly productive subpolar North Atlantic. However, the magnitude of this decline remains highly uncertain and varies substantially across models, limiting our ability to anticipate its ecological and biogeochemical ...
S. Doléac, M. Lévy, L. Bopp
wiley   +1 more source

Silicic acid concentration of sediment core 13077-021

, 2001
Silicic acid concentration of sediment core 13077 ...
Lydie Corrin (7892705), Rob Witbaard (6963593), Grandel, Sibylle, Ståhl, Henrik, Per Hall (7891376), Hall, Per, Morgane Gallinari (7892702), Corrin, Lydie, Tengberg, Anders, Hauvespre, Anne, Anne Hauvespre (7892708), Ragueneau, Olivier, Richard Stephen Lampitt (7886282), Rickert, Dirk, Gallinari, Morgane, Henrik Ståhl (7892711), Witbaard, Rob, Dirk Rickert (7891544), Lampitt, Richard Stephen, Olivier Ragueneau (7111652), Sibylle Grandel (7892699), Anders Tengberg (7892714)   +21 more
core   +1 more source

Comparing amorphous silica, short-range-ordered silicates and silicic acid species by FTIR. [PDF]

Sci Rep, 2022
Ellerbrock R, Stein M, Schaller J.
europepmc   +1 more source