Results 21 to 30 of about 377,803 (302)

Moldable capillary suppressor for open tubular ion chromatography based on a polymeric ion exchanger.

Talanta Open, 2021
We successfully fabricated 45 μm bore microchannels in PVA-Poly(styrenesulfonate) cation exchange polymers. by casting aqueous prepolymer mixtures around fine tungsten wire mandrels, curing, crosslinking by thermal annealing, and subsequently removing ...
Fereshteh Maleki, Bikash Chouhan, Charles P. Shelor, Purnendu K. Dasgupta   +3 more
doaj   +1 more source

Separations of lipids by silver ion chromatography

Journal of Lipid Research, 1966
The possibility of separating lipid materials on the basis of the number, type, and position of the unsaturated centers they contain, by virtue of the complexing of these unsaturated bonds with silver ions, provides a relatively recent but now very ...
L.J. Morris
doaj   +1 more source

Major Inorganic Ions in Polish Beers

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Food Science and Technology, 2021
Reliable determination of various components of beers is still a challenge due to their complex matrices. Inorganic ions are very important components of beer; their content depends mainly on the quality of water and additional substances used in the ...
Rajmund MICHALSKI, Edward MUNTEAN, Aleksandra ŁYKO   +2 more
doaj   +1 more source

Measurements of cadmium levels in relation to tobacco dependence and as a function of cytisine administration

Scientific Reports
Cigarette smoking delivers a number of heavy metals, including cadmium (Cd), into the body. Bioaccumulation may result in an increase in pathological consequences over time.
Karol Wróblewski, Julia Wojnicka, Piotr Tutka, Agnieszka Szmagara, Anna Błażewicz   +4 more
doaj   +1 more source

Method transfer from ion pair chromatography to charged aerosol detector-compatible mixed-mode chromatography: A case study using carbocisteine

Journal of Chromatography Open, 2021
To take advantage of the charged aerosol detector (CAD) for sensitive LC analysis of analytes with weak chromophore, the volatility of the entire mobile phase is a prerequisite.
Rasmus Walther, Oliver Scherf-Clavel, Ulrike Holzgrabe   +2 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Simultaneous determination of chloride, bromide and iodide in foodstuffs by low pressure ion-exchange chromatography with visible light detection

Czech Journal of Food Sciences, 2011
An ion-exchange chromatography method with visible light detection was developed for the simultaneous determination of chloride, bromide, and iodide in foodstuffs.
Lingyun Yu, Xinshen Zhang, Jing Jin, Shujuan Che, Lan Yu   +4 more
doaj   +1 more source

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

Preliminary investigations of plasma lipidome and selenium levels in adults with treated hypothyroidism and in healthy individuals without selenium deficiency

Scientific Reports
The present preliminary study aimed to provide a targeted lipidomic analysis of Hashimoto (HT) and non-HT patients with well-controlled hypothyroidism as well as in healthy adults, and is the first to demonstrate the association of several components of ...
Anna Błażewicz, Julia Wojnicka, Andreas M. Grabrucker, Piotr Sosnowski, Alicja Trzpil, Anna Kozub-Pędrak, Klaudia Szałaj, Agnieszka Szmagara, Ewelina Grywalska, Katarzyna Skórzyńska-Dziduszko   +9 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source