Results 71 to 80 of about 1,741,768 (402)

Denitrification mechanism in oxygen-rich aquatic environments through long-distance electron transfer

npj Clean Water, 2022
The lack of electron donors in oxygen-rich aquatic environments limits the ability of natural denitrification to remove excess nitrate, leading to eutrophication of aquatic ecosystems. Herein, we demonstrate that electron-rich substances in river or lake
Ming-Zhi Wei, Jin-Wei Liu, Qin-Zheng Yang, An Xue, Hao Wu, Jin-Ren Ni, Lea R. Winter, Menachem Elimelech, Hua-Zhang Zhao   +8 more
doaj   +1 more source

Bioavailability of pesticides in freshwater sediments [PDF]

, 2007
In ecological risk assessment standardized sediment toxicity tests are used to predict the hazard of chemicals for sediment-living organisms. Feeding is a prerequisite in these long-term tests to avoid starvation of test organisms.
Åkerblom, Nina
core  

Water induced sediment levitation enhances downslope transport on Mars [PDF]

, 2017
On Mars, locally warm surface temperatures (~293 K) occur, leading to the possibility of (transient) liquid water on the surface. However, water exposed to the martian atmosphere will boil, and the sediment transport capacity of such unstable water is ...
A Cousin, A Kereszturi, AH Treiman, AS McEwen, C Atwood-Stone, C Elachi, CJ Hansen, CM Dundas, CM Dundas, CM Dundas, CP McKay, D Reiss, D Reiss, D Reiss, DE Stillman, DE Stillman, DL Turcotte, DWG Sears, EJ Gaidos, F Costard, F Schmidt, G Jouannic, G Jouannic, HH Kieffer, J Arfstrom, J Laskar, J Raack, J Raack, J-P Bibring, JEC Scully, JF Mustard, JL Dickson, JL Heldmann, JL Heldmann, JL Heldmann, JM Goldspiel, JW Head, K Pasquon, KA Coleman, L Ojha, L Ojha, LK Fenton, M Balme, M Chojnacki, M Massé, M Vincendon, MA Kreslavsky, MC Malin, MC Malin, MG Kleinhans, MH Hecht, MI Richardson, MJ Westoby, MT Mellon, N Hoffman, N Mangold, PR Christensen, R Sullivan, RE Grimm, RM Haberle, S Diniega, S Diniega, SC Schon, SJ Conway, SJ Conway, SW Squyres, T Appéré, WV Boynton, YA Cengel   +68 more
core   +5 more sources

Rapid bacterial colonization of low-density polyethylene microplastics in coastal sediment microcosms

BMC Microbiology, 2014
BackgroundSynthetic microplastics (≤5-mm fragments) are emerging environmental contaminants that have been found to accumulate within coastal marine sediments worldwide.
Jesse P Harrison, M. Schratzberger, M. Sapp, A. M. Osborn   +3 more
semanticscholar   +1 more source

Insights into pegRNA design from editing of the cardiomyopathy‐associated phospholamban R14del mutation

FEBS Letters, EarlyView.
This study reveals how prime editing guide RNA (pegRNA) secondary structure and reverse transcriptase template length affect prime editing efficiency in correcting the phospholamban R14del cardiomyopathy‐associated mutation. Insights support the design of structurally optimized enhanced pegRNAs for precise gene therapy.
Bing Yao, Qiangbing Yang, Christian J.B. Snijders Blok, Mark A. Daniels, Pieter A. Doevendans, Raymond Schiffelers, Joost P.G. Sluijter, Zhiyong Lei   +7 more
wiley   +1 more source

Assessment of dam trapping efficiency from water residence time: Application to fluvial sediment transport in the Adour, Dordogne, and Garonne River basins (France) [PDF]

, 2001
Dam-trapping efficiency can be estimated by using the hydraulic residence time. On the regional scale, the global impact of several dams can be assessed by taking into account the spatial organization of dams along the river network.
Brown, Brune, Chang, De Vries, Eric Maneux, Eric Veyssy, Etcheber, Ferguson, Hay, Henri Etcheber, Holeman, Humborg, Jean Luc Probst, Jouanneau, Kempe, Knox, Kondolf, Loughran, Ludwig, Ludwig, Maneux, Maneux, Mercier, Meyer, Milliman, Milliman, Mulder, Palmer, Pinet, Shalash, Smith, Strahler, Veyssy, Vörösmarty, Walling, Walling, Williams   +36 more
core   +2 more sources

MET variants with activating N‐lobe mutations identified in hereditary papillary renal cell carcinomas still require ligand stimulation

Molecular Oncology, EarlyView.
MET variants in the N‐lobe of the kinase domain, found in hereditary papillary renal cell carcinoma, require ligand stimulation to promote cell transformation, in contrast to other RTK variants. This suggests that HGF expression in the microenvironment is important for tumor growth in such patients. Their sensitivity to MET inhibitors opens the way for
Célia Guérin, Audrey Vinchent, Marie Fernandes, Isabelle Damour, Agathe Laratte, Rémi Tellier, Gabriella O. Estevam, Jean‐Pascal Meneboo, Céline Villenet, Clotilde Descarpentries, James S. Fraser, Martin Figeac, Alexis B. Cortot, Etienne Rouleau, David Tulasne   +14 more
wiley   +1 more source

Estimating specific surface area of fine stream bed sediments from geochemistry [PDF]

, 2010
Specific surface area (SSA) of headwater stream bed sediments is a fundamental property which determines the nature of sediment surface reactions and influences ecosystem-level, biological processes.
Aitchison, Appleton, B.G. Rawlins, Ballantine, Ben-Dor, Breit, Breward, Brunauer, Cardinale, Evans, Fullen, Fuller, G. Turner, G. Wildman, Galy, Horowitz, I. Mounteney, Johnson, Mainstone, Mayer, Owens, Petersen, Rawlins, Schwertmann, Wagai, Wang, Withers   +26 more
core   +2 more sources

Plasma lipidomic and metabolomic profiles in high‐grade glioma patients before and after 72‐h presurgery water‐only fasting

Molecular Oncology, EarlyView.
Presurgery 72‐h fasting in GB patients leads to adaptations of plasma lipids and polar metabolites. Fasting reduces lysophosphatidylcholines and increases free fatty acids, shifts triglycerides toward long‐chain TGs and increases branched‐chain amino acids, alpha aminobutyric acid, and uric acid.
Iris Divé, Lisa Hahnefeld, Katharina J. Wenger, Donat Kögel, Joachim Steinbach, Gerd Geisslinger, Michael W. Ronellenfitsch, Irmgard Tegeder   +7 more
wiley   +1 more source

Sediment transport and dispersal in the nearshore of “flash-flood” rivers [PDF]

, 2014
River sediment dispersal on the near-shore of “flash-flood” rivers is investigated using a coupled wave-current-sediment transport model. Besòs and Llobregat rivers (short and mountainous rivers in NW Mediterranean Sea, near to Barcelona City) are used ...
Espino Infantes, Manuel, Gracia Garcia, Vicente, Grifoll Colls, Manel, Guillén Aranda, Jorge, Sánchez-Arcilla Conejo, Agustín   +4 more
core   +1 more source