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985 Matching Results
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In vitro anti-diabetic effects and phytochemical profiling of novel varieties of Cinnamomum zeylanicum (L.) extracts
Article exploring the use of pressured and decoctions water to extract anti-diabetic phytochemicals from cinnamon. The extensive metabolite profiling of novel SW and SG extracts and comparison of that with commercially available CC are reported for the first time in this study. The C. zeylanicum, SW accession holds some promise in the management of diabetes.
Date:
April 27, 2020
Creator:
Wariyapperuma, W.A. Niroshani M.; Kannangara, Sagarika; Wijayasinghe, Yasanandana S.; Subramanium, Sri & Jayawardena, Bimali
System:
The UNT Digital Library
Protein Determination with Molecularly Imprinted Polymer Recognition Combined with Birefringence Liquid Crystal Detection
Article integrating a molecularly imprinted polymer (MIP) film recognition unit with a liquid crystal (LC) in an optical cell transducer to incur the selectivity of liquid crystal-based sensors.
Date:
August 20, 2020
Creator:
Cieplak, Maciej; Węgłowski, Rafał; Iskierko, Z.; Węgłowska, Dorota; Sharma, Piyush S.; Noworyta, Krzysztof R. et al.
System:
The UNT Digital Library
Rediscovery of the Elements: Daniel Rutherford, Nitrogen, and the Demise of Phlogiston
Article describing Daniel Rutherford's discovery of nitrogen. The article also details the work of other scientists revolving around the discovery of nitrogen.
Date:
Spring 2015
Creator:
Marshall, James L., 1940- & Marshall, Virginia R.
System:
The UNT Digital Library
Bad Pyrmont Spa
Photo depicts the Bad Pyrmont Spa in western Germany which is known for its therapeutic baths and vapor cave. The paragraph on the bottom of page 70 gives details about the photo and the spa.
Date:
Winter 2015
Creator:
Marshall, James L., 1940- & Marshall, Virginia R.
System:
The UNT Digital Library
Rediscovery of the Elements: The Rare Earths - The Beginnings
This article explores the rare earths, the chemically similar elements that occupy the f-block of the Periodic Table and the Group III chemical family. The articles shows the locations that certain rare earths were originally found. It also gives details on where the elements can be found currently, as well as major production areas. The cover of the Fall 2015 Hexagon journal (Vol. 106, Issue 3) features the Mountain Pass rare earth ore body in Southern California, which is mentioned in the article on pages 40-45 of the journal. A description of the photo on the cover of the journal can be found on page 38.
Date:
Autumn 2015
Creator:
Marshall, James L., 1940- & Marshall, Virginia R.
System:
The UNT Digital Library
Rediscovery of the Elements: The Rare Earths - The Confusing Years
This article gives a timeline of research conducted on the rare earths, 17 elements found in the f-block and Group III chemical family of the Periodic Table. It covers discoveries made after the success of Swedish chemist, Carl Gustaf Mosander. The article describes the categorization of the rare earths that took place after Mosander's time, as well as separation techniques that developed.
Date:
Winter 2015
Creator:
Marshall, James L., 1940- & Marshall, Virginia R.
System:
The UNT Digital Library
Rediscovery of the Elements: Sir Humphry Davy and the Alkalis
Article provides information on the history of alkalis, particularly discoveries associated with potassium and sodium. The article also gives information on Humphry Davy, the first person to prepare alkalis in elemental form.
Date:
Summer 2015
Creator:
Marshall, James L., 1940- & Marshall, Virginia R.
System:
The UNT Digital Library
Three Component Cascade Reaction of Cyclohexanones, Aryl Amines, and Benzoylmethylene Malonates: Cooperative Enamine-Brønsted Acid Approach to Tetrahydroindoles
Article discusses how a three-component cascade reaction comprising cyclic ketones, arylamines, and benzoylmethylene malonates has been developed to access 4,5,6,7-tetrahydro-1H-indoles. Furthermore, the reaction was achieved through cooperative enamine-Brønsted catalysis in high yields with wide substrate scopes.
Date:
November 30, 2022
Creator:
Vasquez, Jose Cortes; Alharbi, Waad S.; Davis, Jacqkis; Moore, Alexia; Nesterov, Vladimir N.; Cundari, Thomas R., 1964- et al.
System:
The UNT Digital Library
Unsymmetric Pentacene- and Pentacenequinone-Fused Porphyrins: Understanding the Effect of Cross- and Linear-Conjugation
Article says that unsymmetric pentacenequinone-fused (cross-conjugated) and pentacene-fused (linear-conjugated) porphyrins were designed and synthesized. This work provides important and useful information on guiding new material designs.
Date:
July 29, 2022
Creator:
Moss, Austen; Nevonen, Dustin E.; Hu, Yi; Nesterov, Vladimir N.; Nemykin, Victor N. & Wang, Hong
System:
The UNT Digital Library
Reweighted Manifold Learning of Collective Variables from Enhanced Sampling Simulations
Article provides a general reweighting framework based on anisotropic diffusion maps for manifold learning that takes into account that the learning data set is sampled from a biased probability distribution. The authors show that their proposed framework can be used in many manifold learning techniques on data from both standard and enhanced sampling simulations.
Date:
November 11, 2022
Creator:
Rydzewski, Jakub; Chen, Ming; Ghosh, Tushar K. & Valsson, Omar
System:
The UNT Digital Library
The Crucial Role of Solvation Forces in the Steric Stabilization of Nanoplatelets
Article says that the steric stability of inorganic colloidal particles in an apolar solvent is usually described in terms of the balance between three contributions: the van der Waals attraction, the free energy of mixing, and the ligand compression. The authors demonstrate that for sufficiently large nanoplatelets, solvation forces are proportional to the interacting facet area, and their strength is intrinsically tied to the softness of the ligand shell.
Date:
December 9, 2022
Creator:
Petersen, Nanning; Girard, Martin; Riedinger, Andreas & Valsson, Omar
System:
The UNT Digital Library
Anomalous thermo-osmotic conversion performance of ionic covalent-organic-framework membranes in response to charge variations
Authors of the article systematically investigated how the membrane charge populations affect permselectivity by decoupling their effects from the impact of the pore structure using a multivariate strategy for constructing covalent-organic-framework membranes. The complex interplay between pore-pore interactions in response to charge variations for ion transport across the upscaled nanoporous membranes helps explain the obtained results. This study has far-reaching implications for the rational design of ionic membranes to augment energy extraction rather than intuitively focusing on achieving high densities.
Date:
June 13, 2022
Creator:
Xian, Weipeng; Zuo, Xiuhui; Zhu, Changjia; Guo, Qing; Meng, Qing-Wei; Zhu, Xincheng et al.
System:
The UNT Digital Library
An experimental and chemical kinetic modeling study of the role of potassium in the moist oxidation of CO
Article investigates the effect of KCl on moist CO oxidation in a laminar flow quartz reactor. Experiments were conducted in the absence of O2 (gasification), as well as under reducing and fuel-lean conditions, in the temperature range 873–1573 K, and the results were interpreted in terms of a chemical kinetic model.
Date:
December 9, 2022
Creator:
Chanpirak, Arphaphon; Wu, Hao; Glarborg, Peter & Marshall, Paul
System:
The UNT Digital Library
Guanidinium-based covalent organic framework membrane for single-acid recovery
Article discusses how, although acids are extensively used in contemporary industries, time-consuming and environmentally unfriendly processes hinder single-acid recovery from wastes containing various iconic species. The authors rationally designed a membrane with uniform angstrom-sized pore channels and built-in charge-assisted hydrogen bond donors that preferentially conducted HCl while exhibiting negligible conductance for other compounds.
Date:
June 21, 2023
Creator:
Meng, Qing-Wei; Wu, Shaochun; Liu, Mingjie; Guo, Qing; Xian, Weipeng; Zuo, Xiuhui et al.
System:
The UNT Digital Library
Polarizable ab initio QM/MM Study of the Reaction Mechanism of N-tert-Butyloxycarbonylation of Aniline in [EMIm][BF4]
This article presents the use of AMOEBA-based polarizable ab initio AM/MM simulations to investigate the reaction mechanism of the N-tert-butoxycarbonylation of aniline in a water/1-ethyl, 3-methyl imidazolium/tetrafluoroborate mixture.
Date:
October 31, 2018
Creator:
Vázquez-Montelongo, Erik Antonio; Vázquez-Cervantes, José Enrique & Cisneros, Gerardo Andrés
System:
The UNT Digital Library
Preferential Solvation Study of Rosuvastatin in the {PEG400 (1) + Water (2)} Cosolvent Mixture and GastroPlus Software-Based In Vivo Predictions
Article claims that rosuvastatin (RST) is a poorly water-soluble drug responsible for limited in vivo dissolution and subsequently low oral systemic absorption (poor bioavailability). The results of inverse Kirkwood–Buff integrals showed the PS of RST by PEG400 as observed in all studied ratios of the binary mixture.
Date:
March 28, 2023
Creator:
Hussain, Afzal; Afzal, Obaid; Yasmin, Sabina; Haider, Nazima; Alfawaz Altamimi, Abdulmalik Saleh; Martínez, Fleming et al.
System:
The UNT Digital Library
Incorporation of Chiral Frustrated Lewis Pair into Metal–Organic Framework with Tailored Microenvironment for Heterogeneous Enantio- and Chemoselective Hydrogenation
Article states that the development of efficient heterogeneous catalysts with multiselectivity (e.g., enantio- and chemoselectivity) has long been sought after but with limited progress being made so far. To achieve enantio- and chemoselectivity in a heterogeneous system, as inspired by enzymes, the authors illustrate herein an approach of creating an enzyme-mimic region (EMR) within the nanospace of a metal–organic framework (MOF) as exemplified in the context of incorporating a chiral frustrated Lewis pair (CFLP) into a MOF with a tailored pore environment.
Date:
July 27, 2023
Creator:
Zhang, Yin; Jiang, Yao; Nafady, Ayman; Tang, Zhiyong; Al-Enzini, Abdullah M.; Tan, Kui et al.
System:
The UNT Digital Library
Molecular Simulation Strategies for Understanding the Degradation Mechanisms of Acrylic Polymers
Article describes how acrylic polymers, commonly used in paints, can degrade over time by several different chemical and physical mechanisms, depending on structure and exposure conditions. In this work, the authors studied the effects of different degradation mechanisms and agents on properties of acrylic polymers found in artists’ acrylic paints for the first time using atomistic molecular dynamics simulations.
Date:
April 19, 2023
Creator:
Iscen, Aysenur; Forero-Martinez, Nancy C.; Valsson, Omar & Kremer, Kurt
System:
The UNT Digital Library
Large-Scale Synthesis of Covalent Organic Frameworks: Challenges and Opportunities
Article describes how connecting organic building blocks by covalent bonds to design porous crystalline networks has led to covalent organic frameworks (COFs), consequently transferring the flexibility of dynamic linkages from discrete architectures to extended structures. Authors state that this review article highlights the fundamental of COFs, including designing principles, coupling reactions, topologies, structural diversity, synthetic strategies, characterization, growth mechanism, and activation aspects of COFs.
Date:
July 27, 2023
Creator:
Vardhan, Harsh; Rummer, Grace; Deng, Angela & Ma, Shengqian
System:
The UNT Digital Library
A Remarkable Difference in Pharmacokinetics of Fluorinated Versus Iodinated Photosensitizers Derived from Chlorophyll-a and a Direct Correlation between the Tumor Uptake and Anti-Cancer Activity
Article says that to investigate and compare the pharmacokinetic profile and anti-cancer activity of fluorinated and iodinated photosensitizers (PSs), the 3-(1′-(o-fluorobenzyloxy)ethyl pyropheophorbide and the corresponding meta-(m-) and para (p-) fluorinated analogs (methyl esters and carboxylic acids) were synthesized. According to the authors, the nature of the delivery vehicle and tumor types showed a significant difference in uptake and long-term cure by photodynamic therapy (PDT), especially in the iodinated PS.
Date:
April 27, 2023
Creator:
Pandurang, Taur Prakash; Cacaccio, Joseph; Durrani, Farukh A.; Dukh, Mykhaylo; Alsaleh, Ajyal Z.; Sajjad, Munawwar et al.
System:
The UNT Digital Library
Bioinspired Synthesis of Silver Nanoparticles for the Remediation of Toxic Pollutants and Enhanced Antibacterial Activity
Article asserts that this research presents a novel and environmentally friendly approach for the synthesis of multifunctional nanobiocomposites for the efficient removal of toxic heavy metal and dye, as well as the disinfection of wastewater microorganisms. The synthesized bioinspired nanocomposite KAC-CS-AgNPs could be an innovative solution for effective and sustainable wastewater treatment and has great potential for commercial applications.
Date:
June 29, 2023
Creator:
Mandal, Sujata; Hwang, Sangchul; Marpu, Sreekar B.; Omary, Mohammad A.; Prybutok, Victor R. & Shi, Sheldon
System:
The UNT Digital Library
Activity Coefficients at Infinite Dilution for Organic Solutes Dissolved in Three 1-Alkyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids Bearing Short Linear Alkyl Side Chains of Three to Five Carbons
Article discussing activity coefficients at infinite dilution for organic solutes dissolved in three 1-alkyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids bearing short linear alkyl side chains of three to five carbons.
Date:
July 30, 2013
Creator:
Mutelet, Fabrice; Hassan, El-Sayed R. E.; Stephens, Timothy W.; Acree, William E. (William Eugene) & Baker, Gary A.
System:
The UNT Digital Library
Descriptors for Artemisinin and its Derivatives; Estimation of Physicochemical and Biochemical Data
Article on descriptors for artemisinin and its derivatives and an estimation of physiochemical and biochemical data.
Date:
January 2013
Creator:
Abraham, M. H. (Michael H.) & Acree, William E. (William Eugene)
System:
The UNT Digital Library
Acetaldehyde oxidation at elevated pressure
A detailed chemical kinetic model for oxidation of CH3CHO at intermediate to high temperature and elevated pressure has been developed and evaluated by comparing predictions to novel high-pressure flow reactor experiments as well as shock tube ignition delay measurements and jet-stirred reactor data from literature. The flow reactor experiments were conducted with a slightly lean CH3CHO/O2 mixture highly diluted in N2 at 600–900 K and pressures of 25 and 100 bar. This is the accepted manuscript version of the published article.
Date:
April 10, 2021
Creator:
Hashemi, Hamid; Christensen, Jakob M.; Marshall, Paul & Glarborg, Peter
System:
The UNT Digital Library