Results 91 to 100 of about 18,500,807 (388)

Preparation and Certification of River Sediment Reference Material for Polycyclic Aromatic Hydrocarbons

Yankuang ceshi, 2013
Matrix-type certified reference materials (CRMs) prepared from real environmental samples are used to ensure the reliability of environmental analyses and the comparability of results from different laboratories.
FANG Li-ping, WU Zhong-xiang, WANG Wei, SONG Xiang-mei, FENG Yue-peng, TIAN Kan, WANG Xiao-yan   +6 more
doaj  

Differential Selection for Survival and for Growth in Adaptive Laboratory Evolution Experiments With Benzalkonium Chloride

Evolutionary Applications
Biocides are used to control microorganisms across different applications, but emerging resistance may pose risks for those applications. Resistance to biocides has commonly been studied using adaptive laboratory evolution (ALE) experiments with growth ...
Selina B. I. Schmidt, Tom Täschner, Niclas Nordholt, Frank Schreiber   +3 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Changes in Black Truffle (Tuber melanosporum) Aroma during Storage under Different Conditions

Journal of Fungi
The enticing aroma of truffles is a key factor for their culinary value. Although all truffle species tend to be pricy, the most intensely aromatic species are the most sought after.
Ruben Epping, Jan Lisec, Matthias Koch
doaj   +1 more source

Fe-based superconductors: unity or diversity?

, 2008
Does the high temperature superconductivity observed in the newly discovered iron-pnictide materials represent another example of the same essential physics responsible for superconductivity in the cuprates, or does it embody a new mechanism?Comment ...
C Fang, C Xu, Hong Yao, II Mazin, J Zhao, Q Huang, Steven A. Kivelson, V Hinkov, Y Kamihara   +8 more
core   +1 more source

Persistence and Memory in Patchwork Dynamics for Glassy Models [PDF]

, 2007
Slow dynamics in disordered materials prohibits direct simulation of their rich nonequilibrium behavior at large scales. "Patchwork dynamics" is introduced to mimic relaxation over a very broad range of time scales by equilibrating or optimizing directly
A. Alan Middleton, A. Hartmann, Creighton K. Thomas, E. Vincent, M. Mezard, Olivia L. White   +5 more
core   +3 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

The Preparation of Carbon and Nitrogen Stable Isotopes Reference Materials Using Sediments from the Bohai and East China Seas

Yankuang ceshi, 2017
The stable isotope of carbon and nitrogen (δ13C and δ15N) in marine sediments have received much attention as they can be used to trace the sources of organic matter and are helpful in understanding the carbon cycle, climate change and the transformation
QIN De-di, HE Xing-liang, ZHANG Yuan-yuan, LI Feng, CHEN Yu-feng, ZHANG Pei-yu   +5 more
doaj   +1 more source

Interpretation of AIS Images of Cuprite, Nevada Using Constraints of Spectral Mixtures [PDF]

A technique is outlined that tests the hypothesis Airborne Imaging Spectrometer (AIS) image spectra are produced by mixtures of surface materials. This technique allows separation of AIS images into concentration images of spectral endmembers (e.g ...
Adams, J. B., Smith, M. O.
core   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source