Results 71 to 80 of about 3,006 (211)

The effect of cationic surfactants on bitumen's viscosity and asphaltene nanostructure under thermal partial upgrading

open access: yesEnergy Science & Engineering, 2022
Bitumen extracted from oil sands is a highly viscous fluid; thus, its transportation via pipelines in its original form resembles a major challenge. Partial upgrading is a recently proposed approach that aims to reduce bitumen's viscosity to meet the ...
Moataz K. Abdrabou   +4 more
doaj   +1 more source

Study on Rheological Properties of Sodium Carboxymethyl Cellulose in the presence of mixed surfactants and Electrolytes [PDF]

open access: yes, 2015
The effect of mixed surfactant systems of CTAB (cationic) and IGEPAL – CO 890 (non ionic) as well as different electrolytes i.e. NaCl, Na2SO4, and NaH2PO4 on the flow rheological properties of CMC has been studied.
Mishra, Chinmaya
core  

Catalytic asymmetric transfer hydrogenation of ketones: recent advances [PDF]

open access: yes, 2015
In this review, we consider the main processes for the asymmetric transfer hydrogenation of ketones from 2008 up today. The most effective organometallic compounds (derived from Ru, Rh, Ir, Fe, Os, Ni, Co, and Re) and chiral ligands (derived from amino ...
Foubelo, Francisco   +2 more
core   +2 more sources

Metabolic Changes in Living Human Lymphoma Cells Intervening NAD + Metabolism as Revealed by NAD(P)H‐Fluorescence Lifetime Imaging and Para‐Hydrogen‐Induced Polarization NMR

open access: yesCytometry Part A, Volume 107, Issue 11, Page 750-762, November 2025.
ABSTRACT Proliferating cells have a sustained high demand for regeneration of electron acceptors as nicotinamide dinucleotide (phosphate) (NAD(P)+/NAD(P)H) is involved in a number of critical redox reactions within cells. However, their analysis in living cells is still challenging.
Lea Marie Jeude   +7 more
wiley   +1 more source

Effect of Surfactants on Association Characteristics of Di- and Triblock Copolymers of Oxyethylene and Oxybutylene in Aqueous Solutions: Dilute Solution Phase Diagrams, SANS, and Viscosity Measurements at Different Temperatures

open access: yesInternational Journal of Polymer Science, 2011
The interactions in poly(oxyethylene) (E) – poly(oxybutylene) (B) of EB or EBE type block copolymers-sodium dodoecyl sulfate (SDS) or dodecyltrimethylammonium bromide (DTAB) and/or t-octylphenoxy polyethoxyethanol, (TX-100) have been monitored as a ...
Sanjay H. Punjabi   +3 more
doaj   +1 more source

Associating polymer-surfactant systems [PDF]

open access: yes, 1999
Some recent illustrations of the phase behavior of polymer-amphiphile systems in solution are presented. Surfactant-polymer association is demonstrated for various amphiphilic synthetic and biological polymers both on a macroscopic and on a single ...
Dias, R   +5 more
core  

Evaluating the Impact of Phosphate‐Buffered Saline Solutions on the Micellar Behavior of Dimeric Surfactants and Their Interaction With Lipid Membranes

open access: yesJournal of Surfactants and Detergents, Volume 28, Issue 6, Page 1297-1307, November 2025.
ABSTRACT Over the past few years, dicationic alkylammonium bromide dimeric surfactants have emerged as promising agents for numerous biotechnology and medical applications. However, there have been few studies examining their behavior within a biological context, particularly regarding the impact physiological buffers have on their physico‐chemical ...
Ella J. Parsons   +6 more
wiley   +1 more source

Bimodal mesoporous silica with bottleneck pores [PDF]

open access: yes, 2015
Bimodal mesoporous silica consisting of two sets of well-defined mesopores is synthesized by a partial pseudomorphic transformation of an ordered mesoporous starting material (SBA-15 type).
Brühwiler, Dominik, Reber, Michael
core   +1 more source

How Sodium Dodecyl Sulfate Micelles Affect the Coordination and Peroxidase‐Like Activity of the Hemin–Aβ16 Complex

open access: yesChemPlusChem, Volume 90, Issue 10, October 9, 2025.
The interaction between iron‐heme and amyloid‐β (Aβ) peptides can be strongly influenced by the cellular compartment. The presence of sodium dodecyl sulfate as a lipid‐mimicking system shows a protective role of the membrane by hindering both the formation of the heme–Aβ complex and the peroxidase‐like activity, reducing the accessibility of the lipid ...
Chiara Bacchella   +5 more
wiley   +1 more source

Decoding Buried Interfaces in Perovskite Solar Cells: Core Issues, Strategic Engineering, and Prospects for High‐Efficiency Stable Devices

open access: yesAdvanced Science, Volume 12, Issue 40, October 27, 2025.
This review offers a thorough overview of the diverse buried interfaces in PSCs, emphasizing the associated issues, such as defects, perovskite terminations, strain, carrier dynamics, and chemical reactions. Moreover, the buried interface issues in both the widely studied SAM‐based devices and perovskite/silicon tandem solar cells are discussed in ...
Peng Mao   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy