A THREE-DIMENSIONAL GEOLOGIC CONCEPTUAL MODEL BENEATH THE IDAHO NATIONAL LAB’S GEOTHERMAL RESOURCE RESEARCH AREA

2016 ◽  
Author(s):  
James T. St. Clair ◽  
◽  
Michael Janis ◽  
Robert K. Podgorney ◽  
Michael McCurry ◽  
...  
Keyword(s):  
Conceptual Model ◽  
Three Dimensional ◽  
Research Area ◽  
Geothermal Resource ◽  
Resource Research

scholarly journals An Overview on the Rheology, Mechanical Properties, Durability, 3D Printing, and Microstructural Performance of Nanomaterials in Cementitious Composites

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2950
Author(s):  
Hongwei Song ◽  
Xinle Li
Keyword(s):  
Mechanical Properties ◽  
3D Printing ◽  
Three Dimensional ◽  
Cementitious Materials ◽  
Research Area ◽  
Cementitious Composites ◽  
Split Tensile Strength ◽  
Contour Crafting ◽  
Wide Range ◽  
Active Research

The most active research area is nanotechnology in cementitious composites, which has a wide range of applications and has achieved popularity over the last three decades. Nanoparticles (NPs) have emerged as possible materials to be used in the field of civil engineering. Previous research has concentrated on evaluating the effect of different NPs in cementitious materials to alter material characteristics. In order to provide a broad understanding of how nanomaterials (NMs) can be used, this paper critically evaluates previous research on the influence of rheology, mechanical properties, durability, 3D printing, and microstructural performance on cementitious materials. The flow properties of fresh cementitious composites can be measured using rheology and slump. Mechanical properties such as compressive, flexural, and split tensile strength reveal hardened properties. The necessary tests for determining a NM’s durability in concrete are shrinkage, pore structure and porosity, and permeability. The advent of modern 3D printing technologies is suitable for structural printing, such as contour crafting and binder jetting. Three-dimensional (3D) printing has opened up new avenues for the building and construction industry to become more digital. Regardless of the material science, a range of problems must be tackled, including developing smart cementitious composites suitable for 3D structural printing. According to the scanning electron microscopy results, the addition of NMs to cementitious materials results in a denser and improved microstructure with more hydration products. This paper provides valuable information and details about the rheology, mechanical properties, durability, 3D printing, and microstructural performance of cementitious materials with NMs and encourages further research.

Combining Serial Sectioning, EBSD Analysis, and Image-Based Finite Element Modeling

MRS Bulletin ◽  
2008 ◽  
Vol 33 (6) ◽  
pp. 597-602 ◽  
Author(s):  
G. Spanos ◽  
D.J. Rowenhorst ◽  
A.C. Lewis ◽  
A.B. Geltmacher
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Electron Backscatter Diffraction ◽  
Three Dimensional ◽  
Research Area ◽  
Polycrystalline Materials ◽  
Serial Sectioning ◽  
3D Fem ◽  
Element Modeling ◽  
The Status

AbstractThis article first provides a brief review of the status of the subfield of three-dimensional (3D) materials analyses that combine serial sectioning, electron backscatter diffraction (EBSD), and finite element modeling (FEM) of materials microstructures, with emphasis on initial investigations and how they led to the current state of this research area. The discussions focus on studies of the mechanical properties of polycrystalline materials where 3D reconstructions of the microstructure—including crystallographic orientation information—are used as input into image-based 3D FEM simulations. The authors' recent work on a β-stabilized Ti alloy is utilized for specific examples to illustrate the capabilities of these experimental and modeling techniques, the challenges and the solutions associated with these methods, and the types of results and analyses that can be obtained by the close integration of experiments and simulations.

scholarly journals Three-dimensional conceptual model for the Hanford Site unconfined aquifer system: FY 1994 status report

1994 ◽  
Author(s):  
P.D. Thorne ◽  
M.A. Chamness ◽  
V.R. Vermeul ◽  
Q.C. Macdonald ◽  
S.E. Schubert
Keyword(s):  
Conceptual Model ◽  
Three Dimensional ◽  
Unconfined Aquifer ◽  
Status Report ◽  
Hanford Site ◽  
Aquifer System

scholarly journals Application of a gender perspective in tourism research: a theoretical and practical approach

2020 ◽  
Vol 27 (2) ◽  
pp. 251-270
Author(s):  
Cristina Figueroa-Domecq ◽  
Mónica Segovia-Perez
Keyword(s):  
Conceptual Model ◽  
Research Area ◽  
Tourism Industry ◽  
Feminist Studies ◽  
Theoretical Frameworks ◽  
Gender Perspective ◽  
Content Type ◽  
Industry Research ◽  
And Gender ◽  
Further Development

Purpose This paper aims to present a conceptual model that identifies and relates the different approaches and thematic areas in the research area of tourism and gender. Design/methodology/approach The design of the conceptual model is based on a critical review of the literature and the evolution of feminist paradigms and theories. Findings The aforementioned theoretical frameworks are the basis for the further development of feminist studies and a gender perspective in the tourism industry research area, including research design, objectives, methodologies, analysis and result’s presentation. Research limitations/implications Based on literature review, is theoretical. Originality/value Presentation of a conceptual model around the gender perspective in tourism, that leads to the identification of important research opportunities in this area.

scholarly journals 50 nm Scale Alignment Method for Hybrid Manufacturing Processes for Full 3D Structuring

2020 ◽  
Vol 21 (12) ◽  
pp. 2407-2417
Author(s):  
Ki-Hwan Jang ◽  
Hae-Sung Yoon ◽  
Hyun-Taek Lee ◽  
Eunseob Kim ◽  
Sung-Hoon Ahn
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Three Dimensional ◽  
Research Area ◽  
Manufacturing Processes ◽  
Alignment Error ◽  
Alignment Method ◽  
Major Research ◽  
Hybrid Processes

AbstractIn micro-/nano-scale, multi-material three-dimensional (3D), structuring has been a major research area for making various applications. To overcome dimensional and material limitations, several hybrid processes have been proposed. The hybrid processes were performed in the same or different numerically controlled stages. If the stages differed, the substrate was moved and locked to the stage before fabrication. During the locking, alignment error occurred. This error became problematic because this significantly compromised the quality of final structures. Here, an alignment method for a hybrid process consisted of a focused ion beam milling, aerodynamically focused nanoparticle printing, and micro-machining was developed. Two sets of collinear marks were placed at the edges of the substrate. Rotational and translational errors were calculated and compensated using the marks. Processes having different scales were bridged through this alignment method. Various materials were utilized, and accuracy was less than 50 nm when the length of the substrate was less than 13 mm. The alignment method was employed to fabricate a V-shaped structure and step-shaped structure using polymer, ceramic, and metal.

scholarly journals Prediction of Aerosol Deposition in the Human Respiratory Tract via Computational Models: A Review with Recent Updates

Atmosphere ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 137 ◽  
Author(s):  
Vu Khac Hoang Bui ◽  
Ju-Young Moon ◽  
Minhe Chae ◽  
Duckshin Park ◽  
Young-Chul Lee
Keyword(s):  
Respiratory Tract ◽  
Particle Deposition ◽  
Computational Models ◽  
Aerosol Particles ◽  
Three Dimensional ◽  
Aerosol Deposition ◽  
Research Area ◽  
Human Respiratory Tract

The measurement of deposited aerosol particles in the respiratory tract via in vivo and in vitro approaches is difficult due to those approaches’ many limitations. In order to overcome these obstacles, different computational models have been developed to predict the deposition of aerosol particles inside the lung. Recently, some remarkable models have been developed based on conventional semi-empirical models, one-dimensional whole-lung models, three-dimensional computational fluid dynamics models, and artificial neural networks for the prediction of aerosol-particle deposition with a high accuracy relative to experimental data. However, these models still have some disadvantages that should be overcome shortly. In this paper, we take a closer look at the current research trends as well as the future directions of this research area.

Psychosexuality: A Three-Dimensional Model

1978 ◽  
Vol 6 (2) ◽  
pp. 90-97 ◽  
Author(s):  
John H. Court ◽  
O. Raymond Johnston
Keyword(s):  
Conceptual Model ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Moral Dimension ◽  
Sex Research ◽  
Adequate Understanding ◽  
Homosexual Activity ◽  
The Continuum

An adequate understanding of psychosexuality requires a conceptual model from which conclusions can be drawn. Most contemporary sex research and counseling adopts secular and humanistic assumptions about relationships. While such research is factually valuable, it disregards the spiritual aspects of man and fails to allow a moral dimension by which to evaluate behavior. A three-dimensional model is, therefore, proposed to represent the continuum of homosexuality-heterosexuality, of orientation and activity, and of morality. The specific case of homosexual activity is examined in the light of this model.

Research on Types of Oil Reservoirs and Character of Oil-Water Distribution in Heidimiao Layer

2013 ◽  
Vol 772 ◽  
pp. 789-794
Author(s):  
Gui You Lv
Keyword(s):  
Water Distribution ◽  
Oil And Gas ◽  
Dominant Role ◽  
Three Dimensional ◽  
Physical Property ◽  
Research Area ◽  
Oil Reservoir ◽  
Well Testing ◽  
Testing Data ◽  
Oil Water

This paper takes Yingtai area which is located in the south of Qijia-Gulong sag and part of central sag area in the north of the Songliao Basin as the research area. Then combining all information of core, logging, three-dimensional seism and well testing data, it studies the reservoir type and oil-water distribution characteristics of Heidimiao by analyzing the comparison charts of sandstone, profile map of reservoir, T07 structure diagram, well testing data, stratum thickness, sandstone thickness, ratio of sandstone thickness to stratum thickness, porosity values, permeability contour maps. The reservoir lithology of Heidimiao oil layer is siltstone-oriented with poor physical property. The main controlling factor of oil-water distribution is the lithology, followed by the structure. Heidimiao oil layer mainly includes three types, lithological oil reservoir, lithological - structural oil reservoir and structural oil reservoir, among which lithological reservoir plays a dominant role. Its oil-water distribution is characterized by the pattern of upper-water and bottom-oil; when the fault acts as the pathway for the longitudinal migration of oil and gas, the pattern changes to the upper-oil and bottom-water. This research could provide reliable geological basis for the research of old well re-examination, favorable area evaluation and horizontal well drilling design.

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