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436 Matching Results
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Comments on "Solubility and Dissolution Thermodynamic Data of Cefpiramide in Pure Solvents and Binary Solvents"
Abstract: Errors are found in the mathematical correlation based on the combined Jouyban-Acree and Modified Apelblat model for describing the variation in the mole fraction solubility of cefpiramide with temperature and solvent composition for the binary aqueous-ethanol solvent system. The equation coefficents given by Tang and coworkers, when substituted into the model equation, do not yield the authors' calculated mole fraction solubilities of cefpiramide.
Date:
January 24, 2018
Creator:
Acree, William E. (William Eugene)
Object Type:
Article
System:
The UNT Digital Library
Self-efficacy mechanism at work: The context of environmental volunteer travel
This article contributes the first utilization of Bandura’s self-efficacy (SE) mechanism in the context of environmental volunteer travel demonstrating how environmental stewardship, hedonic experience, and environmental SE relate to one another in this particular setting
Date:
December 27, 2018
Creator:
Strzelecka, Marianna; Woosnam, Kyle M. & Nisbett, Gwendelyn S.
Object Type:
Article
System:
The UNT Digital Library
Levelling the Playing Field: Human Capability Approach and Lived Realities for Sport and Gender in the West Indies
This article applies the human capability approach (HCA) to explicitly investigate gender role attitudes from the perspective of boy and girl participants in sport for development and peace (SDP).
Date:
April 2018
Creator:
Zipp, Sarah
Object Type:
Article
System:
The UNT Digital Library
Plasmon coupled super- and sub- radiance from dye shells
Article investigates cooperative spontaneous emission, theoretically and experimentally, for an ensemble of emitters coupled to a core-shell structure.
Date:
September 2018
Creator:
de Silva, Vashista C.; Moazzezi, Mojtaba; Rostovtsev, Yuri V. & Drachev, Vladimir P.
Object Type:
Article
System:
The UNT Digital Library
The 2019 materials by design roadmap
This roadmap article presents an overview of the current state of computational materials prediction, synthesis and characterization approaches, materials design needs for various technologies, and future challenges and opportunities that must be addressed.
Date:
October 24, 2018
Creator:
Alberi, Kirstin; Buongiorno Nardelli, Marco; Zakutayev, Andriy; Mitas, Lubos; Curtarolo, Stefano; Jain, Anubhav et al.
Object Type:
Article
System:
The UNT Digital Library
Estimation of technical change and price elasticities: a categorical time–varying coefficient approach
This article, proposes a categorical time-varying coefficient translog cost function, where each coefficient is expressed as a nonparametric function of a categorical time variable, thereby allowing each time period to have its own set of coefficients.
Date:
October 24, 2018
Creator:
Feng, Guohua; Gao, Jiti & Zhang, Xiaohui
Object Type:
Article
System:
The UNT Digital Library
Rate Coefficient Measurements and Theoretical Analysis of the OH + (E)‑CF₃CH==CHCF₃ Reaction
Rate coefficients, k, for the gas-phase reaction of the OH radical with (E)CF3CHCHCF3 ((E)-1,1,1,4,4,4-hexafluoro-2-butene, HFO-1336mzz(E)) were measured over a range of temperatures (211−374 K) and bath gas pressures (20−300 Torr; He, N2) using a pulsed laser photolysis−laser-induced fluorescence (PLP−LIF) technique. k1(T) was independent of pressure over this range of conditions with k1(296 K) = (1.31 ± 0.15) × 10−13 cm3 molecule−1 s−1 and k1(T) = (6.94 ± 0.80) × 10−13exp[−(496 ± 10)/T] cm 3 molecule−1 s−1, where the uncertainties are 2σ, and the pre-exponential term includes estimated systematic error. Rate coefficients for the OD reaction were also determined over a range of temperatures (262−374 K) at 100 Torr (He). The OD rate coefficients were ∼15% greater than the OH values and showed similar temperature dependent behavior with k2(T) = (7.52 ± 0.44) × 10−13exp[−(476 ± 20)/T] and k2(296 K) = (1.53 ± 0.15) × 10−13 cm3 molecule−1 s−1. The rate coefficients for reaction 1 were also measured using a relative rate technique between 296 and 375 K with k1(296 K) measured to be (1.22 ± 0.1) × 10−13 cm3 molecule−1 s−1, in agreement with the PLP−LIF results. In addition, the 296 K rate coefficient for the O3 +( E)CF3CHCHCF3 reaction …
Date:
March 22, 2018
Creator:
Baasandorj, Munkhbayar; Marshall, Paul; Waterland, Robert L.; Ravishankara, A. R. & Burkholder, James B. (James Bart), 1954-
Object Type:
Article
System:
The UNT Digital Library
New-Student Orientations: Supporting Success and Socialization in Graduate Programs
This article describes the use of an orientation logic model to examine whether certain orientation program characteristics, such as resources and tenets, are associated with student retention, grade achievement, and socialization.
Date:
April 18, 2018
Creator:
Benavides, Abraham David & Keyes, Laura
Object Type:
Article
System:
The UNT Digital Library
An exploration of text mining of narrative reports of injury incidents to assess risk
In this article, a topic model was explored using unsupervised machine learning to summarized free-text narrative reports of 77,215 injuries that occurred in coal mines in the USA between 2000 and 2015. Latent Dirichlet Allocation modeling processes identified six topics from the free-text data. The modeling success enjoyed in this exploratory effort suggests that additional topic mining of these injury text narratives is justified, especially using a broad set of covariates to explain variations in topic emphasis and for comparison of surface mining injuries with injuries occurring during site preparation for construction.
Date:
December 14, 2018
Creator:
Passmore, David L.; Chae, Chungil; Kustikova, Yulia; Baker, Rose M. & Yim, Jeong-Ha
Object Type:
Article
System:
The UNT Digital Library
Bergson, Materialization, and the Peculiar Nature of Space
This article shows how Bergson's notions of variable lived space and the dynamic character of physical matter could lead to theories of fractal dimension and theories of the creation and expansion of matter.
Date:
2018
Creator:
Gunter, P. A. Y. (Pete Addison Y.), 1936-
Object Type:
Article
System:
The UNT Digital Library
Thermo-mechanical response of single-phase face-centered-cubic AlxCoCrFeNi high-entropy alloy microcrystals
Article describes the response of [100]-oriented single-crystal face-centered-cubic Al0.1CoCrFeNi and Al0.3CoCrFeNi high-entropy alloy (HEA) microcrystals tested from 293 to 573 K by means of in situ micro-compression.
Date:
March 13, 2018
Creator:
Jiao, Quan; Sim, Gi-Dong; Komarasamy, Mageshwari; Mishra, Rajiv; Liaw, Peter K. & El-Awady, Jaafar A.
Object Type:
Article
System:
The UNT Digital Library
Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy
Article describes the development of bcc-ordered B2 and fcc phases manifested in three different orientation relationships (ORs) in the same microstructure: Kurdjumov–Sachs, Nishiyama–Wasserman and Pitsch.
Date:
January 22, 2018
Creator:
Choudhuri, Deep; Shukla, Shivakant; Green, Whitley; Gwalani, Bharat; Ageh, Victor; Banerjee, Rajarshi et al.
Object Type:
Article
System:
The UNT Digital Library
Hierarchical features infused heterogeneous grain structure for extraordinary strength-ductility synergy
Article describes experiment in which a synergistic balance of strength and ductility was achieved in a prototypical fcc-based Al0.3CoCrFeNi complex concentrated alloy by incorporating hierarchical microstructural features into heterogeneous grain structure.
Date:
October 27, 2018
Creator:
Shukla, Shivakant; Choudhuri, Deep; Wang, Tianhao; Liu, Kaimiao; Robert Wheeler; Williams, Sarah et al.
Object Type:
Article
System:
The UNT Digital Library
Deformation induced intermediate metastable lattice structures facilitate ordered B2 nucleation in a fcc-based high entropy alloy
This article reports a novel mixed-mode coupled displacive-diffusional transformation resulting in homogeneously distributed intra-granular B2 precipitates within the fcc matrix.
Date:
December 5, 2018
Creator:
Choudhuri, Deep; Shukla, Shivakant; Gwalani, Bharat; Banerjee, Rajarshi & Mishra, R. S.
Object Type:
Article
System:
The UNT Digital Library
Experimental Determination of Residual Stresses Generated by Single Point Incremental Forming of AlSi10Mg Sheets Produced Using SLM Additive Manufacturing Process
This article focuses on investigating the residual stress values associated with a part fabricated by Selective Laser Melting technology (SLM) when this is subjected further to forces on single point incremental forming (SPIF) operation of variable wall angle.
Date:
November 13, 2018
Creator:
López, Cecilio; Elías-Zúñiga, Alex; Jiménez, Isaac; Martínez-Romero, Oscar; Siller Carrillo, Héctor Rafael & Diabb, José
Object Type:
Article
System:
The UNT Digital Library
Calculation of the Surface Tension of Ordinary Organic and Ionic Liquids by Means of a Generally Applicable Computer Algorithm Based on the Group-Additivity Method
This article presents the calculation of the surface tension of ordinary organic and ionic liquids, based on a computer algorithm applying a refined group-additivity method.
Date:
April 16, 2018
Creator:
Naef, Rudolf
Object Type:
Article
System:
The UNT Digital Library
A reconsideration of the (non-)uniform syntax of Korean right-dislocation
This article investigates the clausal nature of Korean Right-Dislocation Constructions (RDCs) and reconsiders recent extant (non-uniform analyses of RDCs.
Date:
2018
Creator:
Furuya, Kaori
Object Type:
Article
System:
The UNT Digital Library
Corrosion, Erosion andWear Behavior of Complex Concentrated Alloys: A Review
This article presents a comprehensive view on corrosion, erosion, and wear behavior of complex concentrated alloys.
Date:
August 3, 2018
Creator:
Ayyagari, Aditya; Hasannaeimi, Vahid; Singh Grewal, Harpeet; Singh Arora, Harpreet & Mukherjee, Sundeep
Object Type:
Article
System:
The UNT Digital Library
Effect of Substrate Support on Dynamic Graphene/Metal Electrical Contacts
This article investigates the stability of dynamic electrical contacts at a graphene/metal interface using atomic force microscopy (AFM), under static conditions with variable normal loads and under sliding conditions with variable speeds.
Date:
March 22, 2018
Creator:
Lee, Jihyung; Hu, Xiaoli; Voevodin, Andrey A.; Martini, Ashlie & Berman, Diana
Object Type:
Article
System:
The UNT Digital Library
Sumergidos Con Lupa en Los Ríos Del Cabo De Hornos: Valoración ética De Los Ecosistemas Dulceacuícolas Y Sus Co-Habitantes
This article presents the methods and results of a multidisciplinary work focused on invertebrates and freshwater ecosystems of the Cape Horn Biosphere Reserve.
Date:
June 25, 2018
Creator:
Contador, Tamara; Rozzi, Ricardo, 1960-; Kennedy, James H.; Massardo, Francisca; Ojeda, Jaime; Caballero, Paula et al.
Object Type:
Article
System:
The UNT Digital Library
Transformaciones Del Pensamiento De Darwin en Cabo De Hornos: Un Legado Para La Ciencia Y La Etica Ambiental
This article examines how in the course of his life Darwin transformed his initial judgments about the Fuegian people, and how this change of judgment is associated with the maturation of his concepts to forget the theory of human evolution.
Date:
June 17, 2018
Creator:
Rozzi, Ricardo, 1960-
Object Type:
Article
System:
The UNT Digital Library
Political Mandate and Clarity of Responsibility: Economic Policies under Rightist Governments in Latin America
This article uses panel data for eighteen Latin American countries from 1995 to 2015 to study whether clarity of responsibility can influence presidential decision-making concerning unpopular policies, especially microeconomic policies.
Date:
June 13, 2018
Creator:
Biglaiser, Glen & McGauvran, Ronald J.
Object Type:
Article
System:
The UNT Digital Library
Análisis De Los Cursos De Filosofía Ambiental De Campo en El Parque Etnobotánico Omora, Reserva De La Biosfera Cabo De Hornos, Chile
This article focuses on the international Field Environmental Philosophy (FEP) course that takes place annually at Omora Park, examining courses offered from 2015 - 2018.
Date:
June 25, 2018
Creator:
Malebrán, Javiera & Rozzi, Ricardo, 1960-
Object Type:
Article
System:
The UNT Digital Library
El Turismo Como Una Herramienta Para La Conservación Del Elefante Marino Del Sur (Mirounga Leonina) Y Sus Habitats en Tierra Del Fuego, Reserva De La Biosfera Cabo De Hornos, Chile
This article establishes the importance that the conservation of the southern elephant seal (Mirounga leonina Linnaeus 1758) and its habitats has for tourists.
Date:
June 25, 2018
Creator:
Kirk, Christian; Rozzi, Ricardo, 1960- & Gelcich, Stefan
Object Type:
Article
System:
The UNT Digital Library