Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Test Materials"”.
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English diction for singers : a self-instructional course of study utilizing the international phonetic alphabet with self-test materials
… contained in that particular chapter; self-tests for each chapter are provided at the end of the course. Answers for all accompanying exercises and all self-tests are included in the Appendixes. The Appendixes also include a listing of the sources for the extensive musical examples, a pitch …
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The Effect of Regional Dialect on the Validity and Reliability of Word Recognition Scores
… from two sets of Mandarin speech audiometry materials. Four lists of bisyllabic words in Mainland Mandarin and Taiwan Mandarin dialects were administered to 16 participants of each dialect with normal hearing across two test sessions. The performance on materials presented in the native …
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Control of the potato leafhopper, Empoasca fabae (Harris), and the influence of leafhopper populations on peanut yields in Virginia
… the potato leafhopper. Leafhopper populations on test plots were monitored throughout 1975 and 1976 using a 12-inch sweep net. Grade, yield, and value data were collected from all experiments. Significant reductions of leafhopper populations were achieved with a broad range of chemicals. In many …
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Defect and deformation studies in transition metal trialuminide compounds
… which were deformed at elevated temperatures. Test materials were prepared via the rapid solidification route. TEM characterizations indicated that the microstructure of the asatomized Al-25at.%Ti alloy powder consisted of primary dendrites of the $\rm Al\sb3Ti$ phase (DO$\sb{22}$ structure) …
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Development of a new screening assay to identify proteratogenic compounds using Zebrafish Danio rerio embryo combined with an exogenous mammalian metabolic activation system (mDarT)
… is encouraged to reduce the number of animal tests. From this perspective, we have developed an in vitro assay (mDarT) using the zebrafish Danio rerio embryo teratogenicity assay (DarT) combined with an exogenous mammalian metabolic activation system (MAS), able to biotransform proteratogenic …
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The Effect of Non-native Dialect on Speech Recognition Threshold for Native Mandarin Speakers
… and such variations can result from being tested in a second dialect. Thirty-two native Mandarin-speaking subjects (sixteen from mainland China and sixteen from Taiwan) participated in speech recognition threshold testing in both dialects to see whether using non-native dialect test …
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A study of marine fouling in Monterey harbor
… were made on the marine fouling occuring on test panels In Monterey Harbor during the period January 26 to AprlI 21, 1966. Test panels of various materials were placed at three depths. Observations were made on plywood panels exposed for four weeks, immersed at two week intervals, at just …
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Effect of Time on Gypsum-Impression Material Compatibility
… hydrocolloid (alginate) alternatives. The test materials were Alginot® (Kerrâ„¢), Position Penta Quick® (3M ESPEâ„¢) and Silgimix® (Sultan Dentalâ„¢). The irreversible hydrocolloid impression material, Jeltrate Plus antimicrobial® (Dentsply Caulkâ„¢) served as the control. Materials and …
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Imaging of absolute electrical properties using electroquasistatic and magnetoquasistatic sensor arrays
… a second conductor used to sense the response to test materials. Existing measurement capabilities are extended: 1. Multiple sensing elements are incorporated into electroquasistatic and magneto-quasistatic sensors such that the response can be accurately modeled. Single sensing element sensors …
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Under ballast mats for railway infrastructure–a North American approach to component characterization
… and passenger service. This lack of domestic testing procedures tailored to N.A. heavy haul freight lines provides challenges in implementing representative procedures to test materials where the UBMs will be exposed to higher axle loads. To understand how changes to the current procedures may …
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Experimental Investigation of Hyperbolic Heat Transfer in Heterogeneous Materials
… thermal wave behavior was found in heterogeneous materials. Thus, the overall goal of this study was to experimentally verify those results, and develop a parameter estimation scheme to estimate the thermal properties of various heterogeneous materials. Two types of experiments (Experiments 1 and …
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Abrasive wear resistance of ruthenium aluminide intermetallic and ferritic steels containing a sigma intermetallic phase
… comparison between wear resistances in the materials of interest. Specimens of ruthenium aluminide, MCV and ferritic stainless steels containing a sigma phase were produced. The MCV steel was quenched and tempered to match the bulk hardness of the as-received ruthenium aluminide. Five …
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Equilibrium moisture content measurement for porous building materials at various temperatures
… and scanning data were obtained for three test materials at three different temperatures. These data resulted from further investigating the operating range of an existing experimental apparatus and procedure. During the course of the research, the operating range and control of the …
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Aspects of marine fouling in western Cape waters
… development of macrofouling communities on six test materials was examined at 10m and 20m depths in Simonsbay for periods ranging from one month to one year. Community development was similar on inert non-reactive materials, aluminium, stainless steel, fibre glass and polyvinylchloride, but was …
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Considerations of mineralogy and permeability testing of selected Sand/Bentonite mixes
… environmentally inert landfill liner. Numerous test series in the laboratory focused on the permeability as a consequence of the physio-chemical characteristics of the selected mixes of two South African Bentonites and locally available sands. Several exploratory techniques (i.e., Cation …
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The development of a standard drilling test for machinability
… under two headings - modification of the testing machine so that it would be suitable for drilling tests and development of a standard drilling test for machinability which would employ the modified machine. The first mission was accomplished by the substitution of a specimen-holder in the …
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The influence of strain rate and the effect of friction on the forging load in simple upsetting and closed die forging.
… temperature on the stress-strain properties of materials are also evident.</p> <p>In the present study special equipment including an experimental drop hammer and various die-sets have been designed and manufactured. Instrumentation to measure load/time and displacement/time behaviour, of the …
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Active neutralisation and amelioration of acid mine drainage with fly ash
… standard analytical methods for selection of the test materials. Active treatment by means of mixing fly ash with AMD in beakers and a large tank at pre-determined ratios have shown that fly ash is capable of neutralising AMD and increasing the pH beyond neutral values, which optimises the removal …
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