Results 41 to 50 of about 2,189,828 (267)

QuEChERS Method Followed by Solid Phase Extraction Method for Gas Chromatographic-Mass Spectrometric Determination of Polycyclic Aromatic Hydrocarbons in Fish

open access: yesInternational Journal of Analytical Chemistry, 2015
A gas chromatography equipped with mass spectrometer (GCMS) method was developed and validated for determination of 16 polycyclic aromatic hydrocarbons (PAHs) in fish using modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method for ...
Mona Khorshid   +3 more
doaj   +1 more source

De resíduo a insumo: a construção do caminho para uma química mais limpa através de um projeto de ensino From residue to input: building a road to clean chemistry through an educational project

open access: yesQuímica Nova, 2008
The discussion among teachers, students, and technicians about the destination of residues from chemistry laboratories led to a research project whose results were incorporated into a course in its daily practices.
Regina Felisberto   +6 more
doaj   +1 more source

Redmond Red as a Redox Probe for the DNA-Mediated Detection of Abasic Sites [PDF]

open access: yes, 2008
Redmond Red, a fluoropore containing a redox-active phenoxazine core, has been explored as a new electrochemical probe for the detection of abasic sites in double-stranded DNA.
Barton, Jacqueline K., Buzzeo, Marisa C.
core   +2 more sources

A High‐Performance Zinc–Air Battery Cathode Catalyst from Recycling of Spent Lithium Iron Phosphate Batteries

open access: yesSmall Structures, 2023
A novel recycling process of the conductive agent in spent lithium iron phosphate batteries is demonstrated. Wet chemistry is applied in recovering lithium and iron phosphate, and the filter residue is calcined with a small amount of recovered iron ...
Kun Luo   +7 more
doaj   +1 more source

Hydropyrolysis: implications for radiocarbon pre-treatment and characterization of Black Carbon [PDF]

open access: yes, 2010
Charcoal is the result of natural and anthropogenic burning events, when biomass is exposed to elevated temperatures under conditions of restricted oxygen.
Apperley, D.C.   +8 more
core   +3 more sources

Synthesis and Anticancer Activity of Glucosylated Podophyllotoxin Derivatives Linked via 4β-Triazole Rings

open access: yesMolecules, 2013
A series of 4β-triazole-linked glucose podophyllotoxin conjugates have been designed and synthesized by employing a click chemistry approach. All the compounds were evaluated for their anticancer activity against a panel of five human cancer cell lines ...
Cheng-Ting Zi   +7 more
doaj   +1 more source

pH-dependent mechanism of nitric oxide release in nitrophorins 2 and 4 [PDF]

open access: yes, 2009
Nitrophorins are NO carrier proteins that transport and release NO through a pH-dependent conformational change. They bind NO tightly in a low pH environment and release it in a higher pH environment.
Estrin, Dario Ariel   +5 more
core   +1 more source

Reviewing Research Trends:A Scientometric Approach Using Gunshot Residue (GSR) Literature as an Example [PDF]

open access: yes, 2020
The ability to manage, distil and disseminate the significant amount of information that is available from published literature is fast becoming a core and critical skill across all research domains, including that of forensic science.
Cole, Christian   +4 more
core   +2 more sources

Functional differences of iodinated obestatin peptides: in vitro metabolic stability profile [PDF]

open access: yes, 2010
Peptides are small polymers of 50 amino acids, situated between organic molecules and proteins. Most peptides perform a biochemical-physical function and are therefore considered as potential drugs.
De Spiegeleer, Bart   +2 more
core   +1 more source

On the Molecular Origin of the Cooperative Coil-to-globule Transition of Poly(N-isopropylacrylamide) in Water

open access: yes, 2018
By means of atomistic molecular dynamics simulations we investigate the behaviour of poly(N-isopropylacrylamide), PNIPAM, in water at temperatures below and above the lower critical solution temperature (LCST), including the undercooled regime.
Chiessi, E.   +2 more
core   +1 more source

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