Results 91 to 100 of about 47,686 (243)

Cold EI—The Way to Improve GC‐MS and Increase Its Range of Applications

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Gas chromatography‐mass spectrometry (GC‐MS) with Cold electron ionization (EI) is based on interfacing the GC and MS with a supersonic molecular beam (SMB) along with electron ionization of vibrationally cold sample compounds in the SMB in a contact‐free fly‐through ion source (hence the name Cold EI).
Aviv Amirav, Benny Neumark, Oneg Elkabets, Alex Yakovchuk   +3 more
wiley   +1 more source

Preliminary investigation on temperature, chemistry and isotopes of mine water pumped in Bytom geological basin (USCB,Southern Poland) as a potential geothermal energy source [PDF]

, 2016
Mine water from both operating and abandoned mines can be used for individual space heating projects, district heating/cooling systems or for preheating air for mine ventilation.
Boyce, Adrian J., Burnside, Neil, Gzyl, Grzegorz, Janson, Ewa   +3 more
core   +2 more sources

Synthesis of Pyrido[2,3‐d]Azolopyrimidinones: Design and Epidermal Growth Factor Receptor‐Targeted Molecular Docking Toward Novel Anticancer Leads

ChemistryOpen, EarlyView.
New pyrido[2,3‐d]azolopyrimidinones were synthesized and evaluated as potent EGFR‐targeted anticancer leads. Molecular docking and cytotoxicity studies revealed strong receptor binding and submicromolar activity, highlighting this scaffold as a promising framework for future targeted drug development.
Sobhi M. Gomha, Sami A. Al‐Hussain, Basant Farag, AbdElAziz A. Nayl, Wesam Hussein, Abdelwahed R. Sayed, Magdi E. A. Zaki   +6 more
wiley   +1 more source

Exploring the Fragmentation of Sodiated Species Involving Covalent‐Bond Cleavages for Metabolite Characterization

Rapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Electrospray (ESI), the most popular desorption/ionization technique used in mass spectrometry‐based metabolomics, generates both protonated and deprotonated molecules, as well as adduct ions, sodium being the most frequent monoatomic cation entering their composition.
Annelaure Damont, Ekaterina Darii, Chenqin Cao, Anaïs Legrand, Alain Perret, Sylvain Dechaumet, Amina S. Woods, Christophe Junot, Jean‐Claude Tabet, François Fenaille   +9 more
wiley   +1 more source

Recent Advances in Bioconjugation of Aromatic Amino Acid Residues by a Reactivity‐Guided Approach

The Chemical Record, EarlyView.
This review highlights recent advances in the bioconjugation of aromatic amino acids residues, focusing on strategies that leverage their inherent chemical reactivity to enable precise and versatile modifications of biomacromolecules, illustrating relevant applications.
Bruno M. da S. Santos, Lívia C. R. M. da Frota, Thais G. Silva, Fernanda G. Finelli   +3 more
wiley   +1 more source

Titanium Detected in Liver, Kidney, Spleen, and Intestine Is Not Related to Dose, Time, or Route of Exposure to Titanium Dioxide: A Systematic Review

Environmental Toxicology, EarlyView.
ABSTRACT Titanium dioxide (TiO2), used as a food additive (labeled E171 in Europe), was withdrawn from the European market in 2022. The E171 toxicity mechanism involves its uptake, oxidative stress, DNA damage, and inflammation. It has been hypothesized that the TiO2 accumulation nanoparticles (NPs) or E171 triggers tissue damage, and some studies have
Carmen Ximena Martínez‐Escutia, Estefany I. Medina‐Reyes, Eduardo Delgado‐Armenta, Yolanda I. Chirino   +3 more
wiley   +1 more source

An Archaeometallurgical Investigation on Some Archaeological Metal Finds From the Sasanian Site of Jahāngir, Western Iran

Archaeometry, EarlyView.
ABSTRACT Twelve metal artifacts from recent excavations at the Sasanian archaeological site of Jahāngir in western Iran have been analyzed. These items include both decorative and utilitarian artifacts. The samples were examined using micro‐X‐ray fluorescence (μ‐XRF), scanning electron microscopy with energy‐dispersive X‐ray spectroscopy (SEM‐EDS), and
Omid Oudbashi, Leila Khosravi, Morteza Habibzadeh   +2 more
wiley   +1 more source

Developing proxies to constrain redox gradients in terminal Ediacaran oceans [PDF]

, 2015
There is a long-standing interest in the relationship between the rise of early Metazoans and changes in the redox structure of the oceans. As such, there is a need for reliable geochemical proxy archives that record palaeo-redox.
Tostevin, R
core  

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Characterisation of a phylogenetically distinct PL25 family ulvan lyase from a seaweed biomass enriched metagenome

The FEBS Journal, EarlyView.
Ulvan is a polysaccharide available from green seaweed with beneficial properties for various applications. The full potential of ulvan requires enzymatic degradation of the polymer, thus producing ulvan oligosaccharides. This study expands the armoury of characterised ulvan lyases.
Andrius Jasilionis, Pavithra Sivakumar, Justyna M. Dobruchowska, Sune Fjermedal, Hörður Guðmundsson, Bjorn Thor Adalsteinsson, Guðmundur Ó. Hreggviðsson, Anne S. Meyer, Eva Nordberg Karlsson   +8 more
wiley   +1 more source