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Articles 1 - 15 of 15
Full-Text Articles in Entire DC Network
Design Of Piezoresistive Mems Force And Displacement Sensors, Tyler Lane Waterfall
Design Of Piezoresistive Mems Force And Displacement Sensors, Tyler Lane Waterfall
Theses and Dissertations
MEMS (MicroElectroMechanical Systems) sensors are used in acceleration, flow, pressure and force sensing applications on the micro and macro levels. Much research has focused on improving sensor precision, range, reliability, and ease of manufacture and operation. One exciting possibility for improving the capability of micro sensors lies in exploiting the piezoresistive properties of silicon, the material of choice in many MEMS fabrication processes. Piezoresistivity—the change of electrical resistance due to an applied strain—is a valuable material property of silicon due to its potential for high signal output and on-chip and feedback-control possibilities. However, successful design of piezoresistive micro sensors requires …
Characterization Of Wastewater Streams From Bor Site, Zeljko J. Kamberovic
Characterization Of Wastewater Streams From Bor Site, Zeljko J. Kamberovic
Zeljko J Kamberovic
This paper presents full characterization of wastewater streams within Bor copper mine. Seven different wastewater streams were identified and fully characterized (origin, flow rate, chemical and physical properties) on basis of five year analysis. Taking into consideration chemical composition and flow rate of each wastewater calculations of metal loss through wastewaters was calculated. This characterization is the first step in investigations for best remediation technology of wastewaters all together or individual.
Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Kurt A. Rosentrater
Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Kurt A. Rosentrater
Kurt A. Rosentrater
The production of corn-based ethanol in the U.S. is dramatically increasing, and consequently so is the amount of coproduct materials generated from this processing sector. These streams are primarily utilized as livestock feed, which is a route that provides ethanol processors with a substantial revenue source and significantly increases the profitability of the production process. With the construction and operation of many new plants in recent years, these residuals do, however, have much potential for value-added processing and utilization in other sectors as well. Extensive research has been conducted into determining the nutritional properties of distillers dried grains with solubles …
Characteristics Of North American Meat & Bone Meal Relevant To The Development Of Non-Feed Applications, Rafael A. Garcia, Kurt A. Rosentrater, Rolando A. Flores
Characteristics Of North American Meat & Bone Meal Relevant To The Development Of Non-Feed Applications, Rafael A. Garcia, Kurt A. Rosentrater, Rolando A. Flores
Kurt A. Rosentrater
Unmarketable animal tissues are typically processed by rendering plants, which transform them into meat & bone meal (MBM) or similar products. MBM’s traditional use as animal feed has become increasingly threatened, but MBM has potential for non-feed applications. Development of new products and processes is hindered by lack of reliable data on many of MBM’s chemical and physical properties. MBM samples as well as data on raw material and process were collected from 19 rendering facilities in the United States and Canada. A large majority of the raw material was tissue from cattle, swine and poultry. All facilities surveyed practiced …
Resonance Ultrasonic Vibrations (Ruv) For Crack Detection In Silicon Wafers For Solar Cells, William Dallas
Resonance Ultrasonic Vibrations (Ruv) For Crack Detection In Silicon Wafers For Solar Cells, William Dallas
USF Tampa Graduate Theses and Dissertations
The photovoltaic industry provides a pathway to allow renewable energy to meet world wide consumer energy needs. Past and present research and development on silicon based solar cells have helped make them the dominant player in the photovoltaic industry accounting for over 75% in 2005 as accounted by the US Department of Energy. One of the current technological problems is to identify and eliminate sources of mechanical defects such as thermo-elastic stress and cracks leading to the loss of wafer integrity and ultimately breakage of as-grown and processed Si wafers and cells.The RUV method, developed at the University of South …
Portrayal Of Disabilities In Caldecott Books, Tina Taylor, Mary Anne Prater, Jennifer Jenson
Portrayal Of Disabilities In Caldecott Books, Tina Taylor, Mary Anne Prater, Jennifer Jenson
Faculty Publications
The authors read all of the books that received Caldecott Medal and Honor status awarded between 1938 and 2005 and found that 11 included a character with a disability. For each book, they analyzed characterizations of those with disabilities and generated tips for using the book to teach about disabilities. They argue that accurate portrayals of characters with disabilities, particularly the types of disabilities encountered most frequently by young children, are needed in award-winning picture books.
Some Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Kurt A. Rosentrater
Some Physical Properties Of Distillers Dried Grains With Solubles (Ddgs), Kurt A. Rosentrater
Kurt A. Rosentrater
With the rapid growth in the fuel ethanol industry in recent years, considerable research is being devoted to determining distillers dried grains with solubles (DDGS) nutritional properties and to optimizing their inclusion in livestock diets; physical properties of these materials, however, have been largely ignored. Using standard laboratory methods, several physical properties for typical DDGS streams were determined, including moisture content, water activity, thermal properties (conductivity, resistivity, and diffusivity), bulk density, angle of repose, and color. The DDGS samples in this study were golden-brown in color and exhibited physical properties similar to other dry feed ingredients, such as hominy feed, …
Characteristics Of North American Meat And Bone Meal Relevant To The Development Of Non-Feed Applications, Rafael A. Garcia, Kurt A. Rosentrater, Rolando A. Flores
Characteristics Of North American Meat And Bone Meal Relevant To The Development Of Non-Feed Applications, Rafael A. Garcia, Kurt A. Rosentrater, Rolando A. Flores
Kurt A. Rosentrater
Unmarketable animal tissues are typically processed by rendering plants, which transform them into meat and bone meal (MBM) or similar products. MBM's traditional use as animal feed has become increasingly threatened, but MBM has potential for non-feed applications. Development of new products and processes is hindered by lack of reliable data on many of MBM's chemical and physical properties. MBM samples, as well as data on raw material and process, were collected from 19 rendering facilities in the United States and Canada. A large majority of the raw material was tissue from cattle, swine, and poultry. All facilities surveyed practiced …
Characterization Of Residual Stress And Defects In Welded Specimen, Srinivas Chanda
Characterization Of Residual Stress And Defects In Welded Specimen, Srinivas Chanda
UNLV Retrospective Theses & Dissertations
The residual stresses developed at different locations of welded specimens consisting of austenitic Type 304L stainless steel (SS) and/or martensitic Alloy EP-823 has been characterized in terms of S-, W- and T-parameters based on a classical positron annihilation spectroscopy (PAS) technique. The resultant data indicate that the magnitude of residual stress was higher near the fusion-line (FL) compared to that of the base region of the welded specimen consisting of similar materials on both sides. However, for welded specimens of dissimilar materials on opposite side, the extent of residual stress was somewhat lower at the FL compared to that of …
Dynamic Property Characterization Of Ionic Polymer Metal Composite (Ipmc), Prashanth Reddy Duvvuru Kamakshi
Dynamic Property Characterization Of Ionic Polymer Metal Composite (Ipmc), Prashanth Reddy Duvvuru Kamakshi
UNLV Retrospective Theses & Dissertations
In this thesis dynamic properties of Ionic Polymer Metal Composite (IPMC) is studied. The ionic polymer (IPMC) is made out of a high polymer gel film whose surface is plated with platinum. This ionic polymer finds its application in future as artificial muscle. Analytical modeling method for both single and segmented ionic polymer which can exhibit varying curvature along the polymer was introduced. This segmented ionic polymer can generate more flexible propulsion compared with a single strip ionic polymer where only forward propulsion can be generated by a simple oscillatory bending motion. It is well known in biomimetic system research …
Use Of Neutron Diffraction And Microscopy For Characterization Of Residual Stresses And Defects, Silpa Budugur Suresh
Use Of Neutron Diffraction And Microscopy For Characterization Of Residual Stresses And Defects, Silpa Budugur Suresh
UNLV Retrospective Theses & Dissertations
The structural material to contain the target material, used in transmutation of spent nuclear fuel, may develop residual stress due to different forming processes. Nondestructive neutron diffraction (ND) and positron annihilation spectroscopy (PAS) techniques have been utilized to characterize residual stress in martensitic Alloys EP-823 and HT-9, subjected to cold-reduction, plastic deformation and welDing The ND measurements revealed tensile residual stresses on the top and bottom surfaces of the cold-worked specimens. The residual stress was enhanced in cylindrical specimens with increased plastic-deformation. Post-weld-thermal-treatment was beneficial to reduce internal stresses in welded specimens. The line-shape-parameters (S, W and T) obtained from …
Material Characterization And Parametric Studies Of Explosion-Proof Vessel, Jagadeep Thota
Material Characterization And Parametric Studies Of Explosion-Proof Vessel, Jagadeep Thota
UNLV Retrospective Theses & Dissertations
Light-weight explosion-proof vessels can be an important tool for the temporary storage and transportation of explosive materials. Design, analysis and testing of these types of vessels present many technical challenges. Several composite vessel designs have been developed by the Russian Nuclear Federal Center (RFNC-VNIIEF). This thesis characterizes the materials used in the manufacture of the explosion-proof vessel. The objective of the research also involves the determination of an efficient analysis procedure for the explosion-proof vessel that provides a combination of accuracy, computational speed and modeling simplicity in carrying out a parametric analysis. The explosion-proof vessel is finally optimized to reduce …
Synthesis And Characterization Of Metal Complexes Of Cu(Ii), Ni(Ii), Zn(Ii), Co(Ii), Mn(Ii) And Cd(Ii) With Tetradentate Schiff Bases, Jianning Liu, Bo-Wan Wu, Bing Zhang, Yongchun Liu
Synthesis And Characterization Of Metal Complexes Of Cu(Ii), Ni(Ii), Zn(Ii), Co(Ii), Mn(Ii) And Cd(Ii) With Tetradentate Schiff Bases, Jianning Liu, Bo-Wan Wu, Bing Zhang, Yongchun Liu
Turkish Journal of Chemistry
4-(Benzeneazo)salicylaldehyde was synthesized with aniline, sodium nitrite and salicylaldehyde. Two tetradentate ligands, N,N'-bis[4-(benzeneazo) salicylaldehyde]-o-phenylenediamine (H_2L) and N,N'-bis[4-(benzeneazo) salicylaldehyde]ethylenediamine (H_2L') were formed by the 2:1 molar condensation of 4-(benzeneazo) salicylaldehyde with o-phenylenediamine or ethylenediamine. Their Cu(II), Ni(II), Zn(II), Co(II), Mn(II) and Cd(II) complexes were synthesized and characterized by elemental analysis, molar conductivity measurements, and infrared and electronic spectral data. Two ligands and their Ni(II) and Zn(II) complexes were further identified using ^1H NMR spectra. The results suggest that the metal is bonded to the ligand through the phenolic oxygen and the imino nitrogen.
Agro-Morphological Characterization Of Some Wild Wheat (Aegilops L. And Triticum L.) Species, Alpteki̇n Karagöz, Necmi̇ Pi̇lanali, Turgay Polat
Agro-Morphological Characterization Of Some Wild Wheat (Aegilops L. And Triticum L.) Species, Alpteki̇n Karagöz, Necmi̇ Pi̇lanali, Turgay Polat
Turkish Journal of Agriculture and Forestry
Wild wheat (Aegilops L. and Triticum L.) populations were collected from different regions of Turkey and characterized for 5 basic traits, in order to study their agro-morphological characteristics and variation among populations. Material of the study consisted of 112 populations of wild wheat and 12 populations of cultivated wheat. Cultivated einkorn (T. monococcum L. subsp. monococcum) and cultivated emmer (T. turgidum L. subsp. dicoccon (Shrank) Thell.) were used as checks for Triticum species. Among the Aegilops material studied, Ae. tauschii Coss. var. meyeri (Griseb. ex Ledeb.) has not been defined in the flora of Turkey before and is characterized agromorphologically …
Development Of Criteria For The Utilization Of Cement Kiln Dust (Ckd) In Highway Infrastructures, R Asha Sreekrishnavilasam, Maria Caterina Santagata
Development Of Criteria For The Utilization Of Cement Kiln Dust (Ckd) In Highway Infrastructures, R Asha Sreekrishnavilasam, Maria Caterina Santagata
JTRP Technical Reports
This research addressed the recycling of cement kiln dust (CKD), a by-product of cement manufacturing. While significant quantities of CKD are generated every year, its utilization in construction has been to this day quite limited. Additionally, the issue of reusing already landfilled CKD has remained almost completely unexplored. The work made use of three fresh CKDs collected at different instances from the same U.S. plant, as well as CKD obtained from different locations in a 12 year old landfill adjacent to the plant. A comprehensive experimental study of the physio-chemical and engineering properties of the CKDs was performed, and the …