Results 61 to 70 of about 1,357,190 (346)

Comparison of Freezing and Hydrate Formation Methods in Removing Chloride and Bromide Ions from Brine [PDF]

آب و فاضلاب, 2018
The growing population and enhanced industrial activities coupled with limitations on freshwater availability have led to efforts to desalinate salt water from the seas. Membrane and thermal technologies are the two commonly used for this purpose.
Marzieh Fattahi, Kiyana Peyvandy, Farshad Varaminian   +2 more
doaj   +1 more source

Drilling fluid for stabilizing the wellbore in compound-salt formation based on multiple-synergism-method

Shenzhen Daxue xuebao. Ligong ban, 2022
The complex features of the compound-salt formation result in wellbore instability during drilling operations. The mechanism of wellbore instability in compound-salt formation is studied by the analysis of mineral compositions, microstructures, physical ...
ZHAO Xin, SUN Hao, QIU Zhengsong, HUANG Weian, XU Jiafang, ZHONG Hanyi   +5 more
doaj   +1 more source

AC impedance spectroscopy characteristics of chloride-exposed cement pastes [PDF]

, 2020
In this paper, the characteristics of AC impedance spectroscopy of cement paste immersed in chloride solution were measured and analyzed with a proposed equivalent circuit model.
De Schutter, Geert, Hu, Xiang, Shi, Caijun, Yuan, Qian   +3 more
core   +2 more sources

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

Crystal structure of 1,2,3,4-tetrahydroisoquinolin-2-ium (2S,3S)-3-carboxy-2,3-dihydroxypropanoate monohydrate

Acta Crystallographica Section E: Crystallographic Communications
The crystal structure of 1,2,3,4-tetrahydroisoquinolin-2-ium (2S,3S)-3-carboxy-2,3-dihydroxypropanoate monohydrate, C9H12N+·C4H5O6−·H2O, at 115 K shows orthorhombic symmetry (space group P212121).
Rüdiger W. Seidel, Tsonko M. Kolev
doaj   +1 more source

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

Principles of salt formation

Pharmaceutical and Biosciences Journal, 2014
It has been evaluated that approximately 50% of all drug molecules marketed as medicinal products are administered in a form of salts as they offer many benefits for the pharmaceutical drugs. Salt formation is a relatively simple and powerful pre-formation technique that can result in significant improvement of drug’s physicochemical properties ...
openaire   +1 more source

Faulting in prospective CO2 storage sites in the UK Southern North Sea [PDF]

, 2013
Post-depositional folding of Triassic strata, formed largely by the development of salt domes and pillows in the underlying Zechstein Group, led to the formation of numerous large anticlinal structures at the level of the Triassic aged Bunter Sandstone ...
Williams, G.A., Williams, J.D.O.
core  

The stability of supported liquid membranes [PDF]

, 1990
In this paper a new hypothesis about the instability mechanism of SLMs will be discussed: emulsion formation induced by lateral shear forces. Experimental results show that a water phase with a low salt concentration which flows along the membrane ...
Bargeman, D., Bargeman, D., Neplenbroek, A.M., Neplenbroek, A.M., Smolders, C.A., Smolders, C.A.   +5 more
core   +3 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source