Results 61 to 70 of about 612,434 (304)

Buried River Valleys of the Neogene and Early Quaternary in the Middle Volga Region, European Russia

Quaternary, 2023
Buried river valleys from the Neogene–Quaternary time are widespread throughout the Middle Volga region of the Russian Plain. They have been studied for a long period, since the 1940s, with the last major generalizations dating back to the 1980s.
Elena V. Petrova, Artyom V. Gusarov, Achim A. Beylich   +2 more
doaj   +1 more source

Sedimentation and polar order of active bottom-heavy particles [PDF]

, 2013
Self-propelled particles in an external gravitational field have been shown to display both an increased sedimentation length and polar order even without particle interactions.
Hahn, Aljoscha M., Stark, Holger, Wolff, Katrin   +2 more
core   +2 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

Evaluation of acoustic environmental effects and improvement method of ecological fish-nest bricks in the Yangtze River Basin: A model-based case study

Global Ecology and Conservation
With the rapid development of the Yangtze River Basin, the issue of underwater noise pollution has become increasingly severe, which has adversely affected aquatic creatures, particularly fish.
Hongmei Zhang, Dongdong Jia, Xingnong Zhang, Zhuojie Pan, Lei Wu, Changying Chen   +5 more
doaj   +1 more source

Rheology of sedimenting particle pastes [PDF]

, 2012
We study the local and global rheology of non-Brownian suspensions in a solvent that is not density-matched, leading to either creaming or sedimentation of the particles.
Bonn, Daniel, de Cagny, Henri, Dijksman, Joshua A., Fall, Abdoulaye, Ovarlez, Guillaume, van Hecke, Martin, Wandersman, Elie   +6 more
core   +6 more sources

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Direct microscopy versus sputum cytology analysis and bleach sedimentation for diagnosis of tuberculosis: a prospective diagnostic study. [PDF]

, 2010
: BACKGROUND: Diagnostic options for pulmonary tuberculosis in resource-poor settings are commonly limited to smear microscopy. We investigated whether bleach concentration by sedimentation and sputum cytology analysis (SCA) increased the positivity rate
A Cattamanchi, A Cattamanchi, A Pandey, A Ramsay, AM Elliott, BR Johnson, DB Klarkowski, GV Kanaujia, Jane Greig, KA Angeby, KR Steingart, M Bonnet, M Matee, M Sakundarno, Maryline Bonnet, MS Khan, MU Rasheed, P Eamranond, Pamela Hepple, Pascal Nguele, UNAIDS/WHO Working Group on Global HIV/AIDS and STI Surveillance, Vinciane Sizaire, WA Githui, WHO, WHO, WHO, WHO   +26 more
core   +2 more sources

This Is Not a Myeloproliferative Neoplasm…

Pediatric Blood &Cancer, EarlyView.
Stephanie Juané Kennedy
wiley   +1 more source

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source

Sedimentation, trapping, and rectification of dilute bacteria [PDF]

, 2009
The run-and-tumble dynamics of bacteria, as exhibited by \textit{E. coli}, offers a simple experimental realization of non-Brownian, yet diffusive, particles. Here we present some analytic and numerical results for models of the ideal (low-density) limit
Cates, M. E., Tailleur, J.
core   +1 more source