Browsing UiS Brage by Title
Now showing items 16009-16028 of 18639
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Synthesis and characterization of fly ash and slag based geopolymer concrete
(Peer reviewed; Journal article, 2019)This paper presents the formulation and characterization of composite fly ash and slag based geopolymer concrete. Potassium hydroxide (KOH) and potassium silicate (K2SiO3) liquid alkaline activators were used in the ... -
Synthesis and Development of One-part Rock-based Geopolymers for Well Cementing Applications
(PhD Theses UiS;717, Doctoral thesis, 2023)A one-part or Just Add Water (JAW) geopolymer system is an environmental- and user-friendly alternative to Ordinary Portland Cement (OPC) and conventional geopolymers. It helps with producing lower CO2 emissions avoiding ... -
Synthesis and Evaluation of the Tetracyclic Ring-System of Isocryptolepine and Regioiso-Mers for Antimalarial, Antiproliferative and Antimicrobial Activities
(Peer reviewed; Journal article, 2021-05)A series of novel quinoline-based tetracyclic ring-systems were synthesized and evaluated in vitro for their antiplasmodial, antiproliferative and antimicrobial activities. The novel hydroiodide salts 10 and 21 showed the ... -
Synthesis and Investigation of Polymers of 2‑Methacrylamido-caprolactam as Kinetic Hydrate Inhibitors
(Peer reviewed; Journal article, 2020-05)Poly(N-vinylcaprolactam) (PVCap) and related copolymers have been used as kinetic hydrate inhibitors (KHIs) for over 25 years to combat gas hydrate formation in oil and gas field production flow lines. The caprolactam ... -
Synthesis and photodecomposition of antibiotics containing ethanolamine and oxazolidine moieties.
(Bachelor thesis, 2023)Abstract Antimicrobial resistance is a leading cause of death globally and is on the rise. The discovery of new antibiotics is declining, and the synthesis of new scaffolds with decomposing properties is more important now ... -
Synthesis and Photodecomposition Studies of Photodegradable Antibiotics and Chitin Synthase Inhibitors
(PhD thesis UiS;, Doctoral thesis, 2022-05)The release of bioactive compounds to the biosphere, such as chitin synthase inhibitors that are causing negative effects in non-target organisms, or antibiotic agents that contribute to increasing antimicrobial resistance, ... -
Synthesis and Study of Modified Polyaspartic Acid Coupled Phosphonate and Sulfonate Moieties As Green Oilfield Scale Inhibitors
(Peer reviewed; Journal article, 2021)The petroleum industry has strived for several years to explore environmentally friendly scale inhibitors with no acute environmental impact. Well-known industrial biodegradable polyaspartic acid is widely used as a potent ... -
Synthesis and testing of new classes of scale inhibitors
(Master thesis, 2022)Scale deposition is a common water related production problem in the oil and gas industry that can lead to damage and reduced production. Scale deposition occurs from sparingly inorganic salts that create an organic ... -
Synthesis and Testing of Oil Field Scale Inhibitors
(Masteroppgave/UIS-TN-IKBM/2020;, Master thesis, 2020-06-15)Scale formation is one of the major problems faced during production in the oil industry. A common method to control scale is the utilization of chemicals known as scale inhibitors (SIs). Several SIs are available commercially ... -
Synthesis of alkylated phenanthrenes
(Masteroppgave/UIS-TN-IKBM/2018;, Master thesis, 2018-06)This thesis captures the process of synthesizing gram quantities of the compounds 2,3-dimethylphenanthrene (7a), 2,7-dimethylphenanthrene (7b) and 1,7-dimethylphenanthrene (7c) to be used in the EGGTOX project. The EGGTOX ... -
Synthesis of an Alleged Byproduct Precursor in Iodixanol Preparation
(Peer reviewed; Journal article, 2018-07)N1,N3-Bis(2,3-dihydroxypropyl)-2,4,6-triiodo-5-(N-(oxiran-2-ylmethyl)acetamido)isophthalamide (1), the alleged precursor of several minor byproducts formed when the X-ray contrast agent iodixanol is synthesized from ... -
Synthesis of biodiesel from triglyceride oil
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)This research work has dealt with kinetics of biodiesel production (Fatty Acid Methyl Ester “FAME”) from triglyceride oils through transesterification. This project is divided into two parts: literature study and a small ... -
Synthesis of Biologically Active Iminosugars and Strategies Towards the Preparation of Chiral Quinoline Derivatives
(PhD thesis UiS;, Doctoral thesis, 2021-12)Design and preparation of novel bioactive compounds for development of new drug leads is a challenging task. Chirality plays a key role in all biological systems, including drug targets, and stereoisomeric compounds often ... -
Synthesis of Iminosugar Based Ammonium Compounds as Acetylcholinesterase Inhibitor Candidates – A Potential Strategy for Alzheimer’s Treatment
(Bachelor thesis, 2021)Alzheimer’s disease accounts for 60–70% of cases of dementia worldwide, with an estimated global incidence of 50 million cases. Alzheimer’s disease is a chronic and fatal illness that causes progressive deterioration of ... -
Synthesis of isocryptolepine and analogues for antimalarial evaluation
(Masteroppgave/UIS-TN-IKBM/2018;, Master thesis, 2018-07)Malaria is considered a serious global health concern, causing 445 000 deaths annually. With the increasing apperance of drug resistant cases of Plasmodium strains, discovery of new treatments are of paramount importance. ... -
Synthesis of new kinetic gas hydrate inhibitors : lactams as nucleophiles
(Masteroppgave/UIS-TN-IMN/2012;, Master thesis, 2012)Lactam-based surfactants have been synthesized using amines with different chain lengths. Most reactions were also carried out with lactams of different ring sizes: 5, 6 and 7-member ring (pyrrolidone, piperidone and ... -
Synthesis of PAH-metabolites to be used in Environmental Research
(PhD thesis UiS;191, Doctoral thesis, 2013-04-19)As environmental pollutants, polycyclic aromatic hydrocarbons (PAHs) are well known to form metabolites which can react with DNA and proteins to cause mutagenesis and create cancer. For chrysene the metabolite ... -
Synthesis of Phenacene−Helicene Hybrids by Directed Remote Metalation
(Peer reviewed; Journal article, 2020-08)Polycyclic aromatic hydrocarbons (PAHs) with six and seven rings were synthesized via directed metalation and cross-coupling of chrysenyl N,N-diethyl carboxamides with o-tolyl and methylnaphthalenyl derivatives. In the ... -
Synthesis of tacrine- and coumarin-isocryptolepine hybrids as potential dual binding site acetylcholinesterase inhibitors
(Masteroppgave/UIS-TN-IKBM/2020;, Master thesis, 2020-08-10)This project presents the synthesis of tacrine and coumarin scaffolds armed with an alkyl-chain of varying length with an azido functionality and isocryptolepine scaffold armed with a terminal alkyne. The synthesis of ... -
Synthesis of the Hexahydropyrrolo‐[3,2‐c]‐quinoline Core Structure and Strategies for Further Elaboration to Martinelline, Martinellic Acid, Incargranine B, and Seneciobipyrrolidine
(Peer reviewed; Journal article, 2021-01)Natural products are rich sources of interesting scaffolds possessing a plethora of biological activity. With the isolation of the martinella alkaloids in 1995, namely martinelline and martinellic acid, the pyrrolo[3,2‐c]quinoline ...