Blar i Publikasjoner fra CRIStin på emneord "kjemi"
Viser treff 1-20 av 28
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1,4-Dideoxy-1,4-imino‑D‑arabinitol (DAB) Analogues Possessing a Hydrazide Imide Moiety as Potent and Selective α‑Mannosidase Inhibitors
(Peer reviewed; Journal article, 2020-07)The synthesis of two polyhydroxylated pyrrolidines as 1,4-dideoxy-1,4-imino-D-arabinitol (DAB) analogues bearing a hydrazide moiety is described. The DAB analogues act as selective and potent inhibitors of α-mannosidase ... -
Antiscaling Evaluation and Quantum Chemical Studies of Nitrogen-Free Organophosphorus Compounds for Oilfield Scale Management
(Peer reviewed; Journal article, 2021-08)Nonpolymeric aminomethylenephosphonates are widely used as powerful scale inhibitors in the petroleum industry. However, most of these inhibitors have certain drawbacks, such as low biodegradability and incompatibilities ... -
Boronic and Organic Acids as Synergists for a Poly(N-vinylcaprolactam) Kinetic Hydrate Inhibitor
(Peer reviewed; Journal article, 2021-12)A range of boronic acids have been investigated as synergists for the kinetic hydrate inhibitor (KHI) polymer, poly(N-vinylcaprolactam) (PVCap, Mw ≈ 10,000 g/mol) using high pressure rocking cells, a natural gas mixture, ... -
Cavity Size Effects on the Adsorption of CO2 on Pillar[n]arene Structures: A Density Functional Theory Study
(Peer reviewed; Journal article, 2023-08)Carbon dioxide (CO2) is the main greenhouse gas that contributes to the global warming. Therefore, CO2 adsorption is very urgent in the fight to limit global warming below 1.5 degrees Celsius. In this report, the interaction ... -
Combined Effect of Citric Acid and Polyphenol-Rich Grape Seed Extract towards Bioactive Smart Food Packaging Systems
(Peer reviewed; Journal article, 2023-07)Alginate films (2% w·v−1) were prepared with varying concentrations (5–20% w/w) of citric acid and aqueous grape seed extract (GSE) filtrate (11.66 ± 1.32 g GAE/L) using the solvent-evaporation method. Crosslinking alginate ... -
Directed ortho-Metalation and Anionic ortho-Fries Rearrangement of Polycyclic Aromatic O-Carbamates: Regioselective Synthesis of Substituted Chrysenes
(Peer reviewed; Journal article, 2018-03)A general method for the regioselective synthesis of a series of ortho-substituted chrysenyl N,N-diethyl-O-carbamates by the directed ortho-metalation (DoM) strategy is reported. The starting O-carbamates were prepared ... -
Distinct Clades of Protein Phosphatase 2A Regulatory B’/B56 Subunits Engage in Different Physiological Processes
(Peer reviewed; Journal article, 2023-07)Protein phosphatase 2A (PP2A) is a strongly conserved and major protein phosphatase in all eukaryotes. The canonical PP2A complex consists of a catalytic (C), scaffolding (A), and regulatory (B) subunit. Plants have three ... -
Dynamics of monolayer physisorption in homogeneous mesoporous media
(Journal article; Peer reviewed, 2019-12)A model for monolayer physisorption of a one-component gas on the pore surface of a homogeneous macroporous or mesoporous porous medium is presented. It originates from an averaging over many pores of a macroporous medium ... -
Effect of additives, ball milling and isotopic exchange in porous magnesium borohydride
(Journal article; Peer reviewed, 2018-08)Magnesium borohydride (Mg(BH4)2) is a promising material for solid state hydrogen storage. However, the predicted reversible hydrogen sorption properties at moderate temperatures have not been reached due to sluggish ... -
Microstructural Investigations of VO2 Thermochromic Thin Films Grown by Pulsed Laser Deposition for Smart Windows Applications
(Peer reviewed; Journal article, 2022)Abstract The structural properties of VO2 thin films, grown on either LSAT or Si substrates by pulsed laser deposition (PLD), are elucidated by means of transmission electron microscopy (TEM) methods. The TEM observations ... -
Microwave-Assisted One-Pot Synthesis of Novel Polyarylpyrrole Derivatives of Expected Anticancer Activity
(Journal article, 2017)An efficient synthesis of Novel pyrrolederivatives was achieved via solventless reaction of chalcones 1(a-e) with different aldehydes 2(a-e) and ammonium acetate in the presence of sodium cyanide in one-pot under microwave ... -
Phosphonated Iminodisuccinates-A Calcite Scale Inhibitor with Excellent Biodegradability
(Peer reviewed; Journal article, 2023-01)Scale inhibitors are an extremely important chemical in upstream oil and gas field operations and water treatment industries. These inhibitors prevent nucleation and/or crystal growth of scales such as calcite and barite. ... -
Photodegradable antimicrobial agents - synthesis, photodegradation, and biological evaluation
(Peer reviewed; Journal article, 2021-09)Multi-drug resistant (MDR) bacteria are already a significant health-care problem and are making the combat of infections quite challenging. Here we report the synthesis of several new compounds containing an ethanolamine ... -
Physico-Chemical Aspects of the Processes During the Combustion and Heating of Tobacco under Different Conditions
(Peer reviewed; Journal article, 2023-05)Smoking cigarettes causes lung cancer, heart disease, chronic obstructive pulmonary disease (COPD) and other serious diseases. The damage caused by cigarette smoking is multifaceted and complex. Exposure to harmful and ... -
Powerful Synergy of Acetylenic Diol Surfactants with Kinetic Hydrate Inhibitor Polymers - Choosing the Correct Synergist Aqueous Solubility
(Peer reviewed; Journal article, 2021-09)The performance of injected kinetic hydrate inhibitor (KHI) polymer solutions can be boosted considerably by judicious choice of the polymer solvent system. We report the excellent KHI synergism of the low-foaming acetylenic ... -
Pushing the Known Performance Envelope of Kinetic Hydrate Inhibitors - Powerful Synergy of Trialkylamine Oxides with Acrylamide-based Polymers
(Peer reviewed; Journal article, 2021-12)Poly(N-isopropyl methacrylamide) (PNIPMAm) and copolymers are a class of commercially used kinetic hydrate inhibitors (KHIs) for deployment in oil and gas field production flow lines. Here, we report improvements of the ... -
Regiospesific synthesis of dimethylphenanthrenes
(Peer reviewed; Journal article, 2017-05)The dimethylated phenanthrenes 2,3-dimethylphenanthrene (4a), 2,7-dimethylphenanthrene (4b), 2,6-dimethylphenanthrene (4c) and 1,7-dimethylphenanthrene (4d) have been prepared in gram-quantities by a short sequence of ... -
Review on Geopolymers as Wellbore Sealants: State of the Art Optimization for CO2 Exposure and Perspectives
(Peer reviewed; Journal article, 2023-06)Wellbores used in underground production and storage activities, including carbon capture and storage (CCS), are typically sealed using sealants based on Ordinary Portland Cement (OPC). However, leakage along these seals ... -
Sulfur‐Decorated Ni−N−C Catalyst for Electrocatalytic CO2 Reduction with Near 100 % CO Selectivity
(Peer reviewed; Journal article, 2022-08)Developing highly efficient electrocatalysts for electrochemical CO2 reduction (ECR) to value-added products is important for CO2 conversion and utilization technologies. In this work, a sulfur-doped Ni−N−C catalyst is ... -
Synergistic Gas Hydrate and Corrosion Inhibition Using Maleic Anhydride: N-Isopropylmethacrylamide Copolymer and Small Thiols
(Peer reviewed; Journal article, 2023)Kinetic gas hydrate inhibitors (KHIs) are often used in combination with film-forming corrosion inhibitors (CIs) in oilfield production flow lines. However, CIs can be antagonistic to KHI performance. In this study, maleic ...