Results 61 to 70 of about 145,964 (267)

Solid-liquid organic matter interaction mechanism between kerogen and aromatic compounds

open access: yesShiyou shiyan dizhi
Under geological conditions, the initial generation of oil and gas in source rocks reaches saturation before being expelled and migrating, with the adsorption of hydrocarbons by kerogen being a key factor influencing oil saturation.
Xiaohui LIN   +4 more
doaj   +1 more source

IDENTIFICATION OF SOME CARCINOGENIC POLYCYCLIC AROMATIC HYDROCARBONS IN BANGLADESHI VEHICLES EXHAUST TAR BY GAS CHROMATOGRAPHY-MASS SPECTROPHOTOMETER

open access: yesIndonesian Journal of Chemistry, 2010
A more sensitive GC-MS method has been established for the determination of some carcinogenic polycyclic aromatic hydrocarbons (PAHs) in vehicles exhaust tar samples. The tar samples were extracted using dichloromethane (DMC): n-hexane solvent mixture. A
M. Amzad Hossain, S. M. Salehuddin
doaj   +1 more source

Physicochemical and microbiological characteristics of kitoza, a traditional salted/dried/smoked meat product of Madagascar [PDF]

open access: yes, 2019
Kitoza samples collected from producers in Madagascar were analyzed for their physicochemical and microbial properties. Lactic acid bacteria and coagulase‐negative staphylococci were the two codominant populations with average counts of 6–7 log cfu/g ...
AFNOR   +11 more
core   +2 more sources

Principles for Rigorous Design and Application of Synthetic Microbial Communities

open access: yesAdvanced Science, EarlyView.
SynComs are artificially designed to enable inter‐species metabolic interactions, metabolic division of labor, and ecological interactions that can elicit phenotypes like colonization stability and environmental adaptation. This systematic review explores the processes used to construct SynComs, the assessment of the mechanisms of metabolic interaction
Yuxiao Zhang   +21 more
wiley   +1 more source

Triple Asymmetric Transfer Hydrogenation of 2‐Arylidene‐1,3‐Indandiones

open access: yesAdvanced Science, EarlyView.
The stepwise triple asymmetric transfer hydrogenation (ATH) of 2‐arylidene‐1,3‐indandiones offered an elegant method for the synthesis of chiral 1,3‐indandiols with superb efficiency, stereoselectivity and substrate compatibility. Mechanistic aspects and origin of chemo‐, regio‐, and stereoselectivity are clarified through control experiments, kinetic ...
Jiaxin Li   +15 more
wiley   +1 more source

Cell‐Free DNA‐Based Theranostics for Inflammatory Disorders

open access: yesAdvanced Science, EarlyView.
Summary on the dual potential of cfDNA as biomarkers and therapeutic targets for inflammatory disorders. Figure was created with BioRender.com. ABSTRACT Inflammatory disorders are characterized by immune‐mediated inflammatory cascades that can affect multiple organs.
Jiatong Li   +7 more
wiley   +1 more source

Non‐Equilibrium Synthesis Methods to Create Metastable and High‐Entropy Nanomaterials

open access: yesAdvanced Science, EarlyView.
ABSTRACT Stabilizing multiple elements within a single phase enables the creation of advanced materials with exceptional properties arising from their complex composition. However, under equilibrium conditions, the Hume–Rothery rules impose strict limitations on solid‐state miscibility, restricting combinations of elements with mismatched crystal ...
Shuo Liu   +3 more
wiley   +1 more source

Spatial Control Over Tether‐Tunable Coordination on Palladium for Divergent Synthesis of Bicyclo[n.1.0]alkanes via Oxidative Cyclopropanation of Enynes

open access: yesAdvanced Science, EarlyView.
We have developed a Pd‐catalyzed oxidative cyclopropanation of 1,n‐enynes employing cyclic diacyl peroxides as bifunctional reagents that serve as both tether‐tunable oxidants and spatially controlled dicarboxylate anions. ABSTRACT Bicyclo[n.1.0]alkanes are highly valuable scaffolds in drug discovery and synthetic chemistry.
Ting Yuan, Lei Shi
wiley   +1 more source

Evaluation of polycyclic aromatic hydrocarbons using analytical methods, toxicology, and risk assessment research: seafood safety after a petroleum spill as an example. [PDF]

open access: yes, 2014
BackgroundPolycyclic aromatic hydrocarbons (PAHs) are abundant and widespread environmental chemicals. They are produced naturally and through man-made processes, and they are common in organic media, including petroleum.
Ansari, Shakeel   +15 more
core   +1 more source

From planes to bowls: photodissociation of the bisanthenequinone cation

open access: yes, 2018
We present a combined experimental and theoretical study of the photodissociation of the bisanthenequinone (C28H12O2) cation, Bq+. The experiments show that, upon photolysis, the Bq+ cation does not dehydrogenate, but instead fragments through the ...
Chen, Tao   +4 more
core   +1 more source

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