Results 121 to 130 of about 436,973 (328)

Use of a distant reporter group as evidence for a conformational change in a sensory receptor [PDF]

open access: yes, 1977
A highly sensitive method for demonstrating ligand-induced conformational changes in protein molecules in solution is described. The method utilizes an environmentally sensitive reporter group that is known to be distant from the active site.
Hartig, P. R.   +2 more
core  

Superhydrophilic TiO2/WO2.72 Nanocomposites Boost PES Membranes Performance for Natural Spring Water Decontamination

open access: yesAdvanced Materials Interfaces, EarlyView.
TiO2 membrane photocatalytic activity outperformed TiO2/WO2.72 membrane. TiO2/WO2.72 membrane outperformed in hydrophilicity, permeation, rejection and antifouling. UV254 absorbance (0.14) was reduced in natural spring water with TiO2/WO2.72 membrane.
Sibukiso Thobani Nhlengethwa   +8 more
wiley   +1 more source

Abstracting Asynchronous Multi-Valued Networks: An Initial Investigation [PDF]

open access: yes, 2011
Multi-valued networks provide a simple yet expressive qualitative state based modelling approach for biological systems. In this paper we develop an abstraction theory for asynchronous multi-valued network models that allows the state space of a model to
Steggles, L. Jason
core   +1 more source

Precision‐Engineered Plasmonic Nanostar Arrays for High‐Performance SERS Sensing

open access: yesAdvanced Optical Materials, EarlyView.
Highly ordered and dose‐controlled arrays of gold nanodiscs are created using the dots‐on‐the‐fly EBL technique and subsequently converted into nanostar arrays. This technique unlocks the reproducible and robust fabrication of highly efficient SERS substrates. Abstract Surface‐enhanced Raman scattering (SERS) spectroscopy has emerged as a powerful tool
Alexandre Chícharo   +9 more
wiley   +1 more source

Studies of Tryptophans in Membrane- Spanning WALP Peptides by Deuterium NMR Spectroscopy [PDF]

open access: yes, 2000
WALP pep tides of sequence acetyl-Gly-Trp-Trp-(Leu-Ala)-Trp-Trp-Ala-ethanolamine insert into lipid bilayers as membrane-spanning a-helices and modulate the lipid phase behavior as functions of n and the lipid acyl chain length.
Reed, Nichole
core   +2 more sources

Advancing Clinical Medicine with Raman Spectroscopy: Current Trends and Future Perspectives

open access: yesAdvanced Photonics Research, EarlyView.
Raman spectroscopy and microscopy may become excellent tools in clinical medicine, including hematology, oncology, infectious diseases, neurology, gastroenterology, reproductive medicine, rheumatology, and cardiovascular research. However, many challenges such as signal interference, standardization issues, and limited clinical application need to be ...
Jiří Bufka   +5 more
wiley   +1 more source

Fe‐Photocatalyzed Decarboxylative Giese‐Type Reaction of α‐N, O or S Carboxylic Acids: Insight into the Mechanism of the Radical Formation

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Electron‐deficient alkenes can be functionalized with α‐amino, α‐alkoxy and α‐alkylthio radicals formed by Fe‐photocatalyzed decarboxylation of the corresponding carboxylic acids. The reactions proceed under smooth ligandless conditions with inexpensive base and in the absence of oxidant. A mechanistic computational TD‐DFT study supports the occurrence
Fernando Pérez‐Maseda   +4 more
wiley   +1 more source

Highly Sensitive Detection of Human Serum Albumin Biomarker Using a Molecularly Imprinted Polymer‐Based Electrochemical Capacitance Sensor

open access: yesAdvanced Sensor Research, EarlyView.
An electrosynthesized protein‐imprinted polymer (poly(azo‐BBY)) enables probe‐free, real‐capacitance detection of human serum albumin at 0.02 ng mL−1 within a 0.25–3.0 ng mL−1 window. The device uses a redox‐mediator‐free architecture and maintains selectivity against common interferents, illustrating a simple, scalable route to high‐sensitivity ...
Heitor F. Trevizan   +4 more
wiley   +1 more source

Polybithiophene‐Based Molecularly Imprinted Polymers: A Comparative Mechanistic Study on Electrochemical Signal Transduction Approaches for Protein Detection

open access: yesAdvanced Sensor Research, EarlyView.
This study provides the first detailed comparison of the mechanisms behind differential pulse voltammetry and electrochemical impedance spectroscopy in electropolymerized molecularly imprinted polymer (MIP) sensing platforms. Using cystatin C as a model protein, it reveals how electron transfer processes generate signals and offers evidence‐based ...
Meriem Kassar   +6 more
wiley   +1 more source

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