Development of sputtered techniques for thrust chambers

The 0.152 cm thick sputtered and copper deposits were electron beam welded to wrought copper. Tensile specimens were machined from the weld assemblies and tested at room temperature. Tensile strength approached the strength of wrought material. Elongations up to 25% were measured. Sputtered aluminum was used to fill 0.157 cm wide by 0.127 cm deep grooves in thrust chamber spool piece liners. The liners were closed out by sputtering copper from post and hollow cathodes

\u27Til Death Do Them Part? : Assessing the Permanence of Goodridge

In America’s Struggle for Same-Sex Marriage, Daniel Pinello explores the social and political underpinnings of the controversy surrounding so-called “gay” marriage. Pinello’s analysis is directed toward using the struggle for marriage equality as an empirical basis for achieving a better understanding of how public policy derives from the interactions of citizens, interest groups, and government entities. This Book Review argues the importance to policy formation of a force Pinello tends to underemphasize: the counter-majoritarian influence of constitutional law and judicial review. The significance of this factor is considered primarily in relation to state constitutional amendments that purport to “define” marriage as being strictly between one man and one woman. This Book Review concludes that such amendments, by their nature, violate the Federal Equal Protection Clause. Separate consideration is given to the particular illegitimacy and vulnerability of such an amendment in Massachusetts, where state constitutional jurisprudence requires equal marriage rights for same-sex couples

Transition to Adult Life: Advocating for Adolescents with ASD

Parents and professional will become better informed regarding the transition to adult life legal mandates. It will provide suggestions on how to ascertain a student’s present levels of functioning related to transition goals and will explain how to best advocate for adolescents in planning transition that will provide meaningful options for life after school. This program is designed to help you… Learn about the transition to adult life mandate under the Individuals with Disabilities Education Act. Understand the unique challenges faced by adolescents with autism as they exit out of school-age educational programming and the benefit of an early start to transition planning. Become familiar with different types of assessments and interventions for students with autism related to post-secondary training and education, employment, independent living and community participation Become aware of resources that can assist students with ASD and their families in the transition to adult life proces

Studies with a range of grass cultivars in small plots at Biloela, Central Queensland

Over a period of 5 years Panicum coloratum var. makarikariense cv. Bambatsi and cv. Burnett yielded well in midsummer each year but made little growth over winter, though they remained green. Cenchrus ciliaris cv. Molopo had the best winter growth and highest quality standover feed in one experiment. In old stands, however, its frost tolerance was poor. It is suggested that this may have been due to low mineralization of soil nitrogen. In all but the establishment season the buffel grasses gave higher dry-matter yields than the P. maximum cultivars, Petrie and Gatton. Quality of the buffels in terms of both nitrogen and phosphorus was, however, poorer. Chloris gayana cv. Callide and Petrie and Gatton panics were much better utilized than C. gayana cv. Pioneer, while utilization of the buffel cultivars Molopo and Biloela was intermediate. P. coloratum cv. Bambatsi and cv. Burnett were unaffected by partial flooding. This flooding severely affected most of the buffel grasses and to a lesser extent Petrie and Gatton panics. Bambatsi and Burnett panics and Digitaria smutsii were slow to establish

Cognitive processes as predictors of reading success

One hundred and five elementary and middle school students from a rural East Tennessee school district were evaluated using a new test of dyslexia, the Test of Dyslexia and Dysgraphia (TODD; McCallum & Bell, 1999). The TODD includes cognitive measures presumed to underlie reading. Also, reading achievement was assessed using the TODD, and for 73 of the students, by an end-of-year group administered test, the Terra Nova. When cognitive variables were entered into Multiple Regression Analyses using reading achievement scores as criteria, Phonological Awareness was the strongest predictor of all criterion measures after extracting the variance accounted for by age. That is, phonological awareness predicted Letter-Word Calling, Decoding, Reading Comprehension, and Terra Nova Spelling and Reading Composite scores, of variance accounting for from 76% to 21% for the criterion variables. Phonological awareness was the only significant predictor of Decoding and Terra Nova Reading Composite. However, when age was partialled out, the Reading Composite was significantly predicted by phonological awareness followed by visual processing which contributes an additional 4% of the variance, while Decoding was significantly predicted by phonological awareness followed by auditory memory which contributes an additional 1% of the variance. When age is not partialled out, phonological awareness accounted for 76% of the variance in Letter-Word Calling; rapid automatic naming accounted for an additional 6% above that already accounted for by phonological awareness; visual processing accounted for an additional 2%, as did auditory processing; finally, auditory memory accounted for an additional 1%. When age is controlled for, phonological awareness accounted for 60% of the variance in Letter-Word Calling; Auditory processing accounted for an additional 1% of the variance; and visual memory accounted for less than 1% additional variance. When age is uncontrolled, phonological awareness accounts for 54% of the variance for Reading Comprehension and rapid automatic naming, visual processing and auditory memory account for 7%, 4%, 1% and 1% additional variance, respectively. When controlling for age, phonological awareness accounts for 19% of the variance for Reading Comprehension, and auditory processing and visual memory each predict an additional 1% of the variance, respectively. After phonological awareness, the next significant predictor of Terra Nova Spelling was auditory processing accounting for an additional 3% of the variance when age was not partialled out. When controlling for age, phonological awareness, auditory processing and visual memory predicted Spelling accounting for 20%, 6%, and 3% of additional variance, respectively. These results are commensurate with current research emphasizing the predominance of phonological awareness and support the relative importance of rapid automatic naming, auditory memory and processing, and visual memory and processing in explaining the acquisition of beginning reading. Teachers of reading will find these results useful in understanding and designing curricula to develop the basic building blocks of reading. Assuming data continue to support the development of the TODD, school psychologists will benefit from having one test available to diagnose dyslexia, rather than having to choose various subtests taken from a variety of instruments

Effect of incorporated plant materials on germination, persistence and growth of Ladino white clover seedlings in pots

In a pot experiment the incorporation of the equivalent of 15·5 tonnes/ha of finely milled oven-dry aerial portions of three grass species in the top 2·5 cm of soil resulted in a number of distinct effects on the germination, persistence and subsequent growth of Ladino white clover (Trifolium repens) seedlings. The three species, Paspalum dilatatum, Bromus unioloides and Ronpha grass (Phalaris sp.), caused differing reductions in the speed of emergence, total emergence and persistence of emerged seedlings compared with no incorporated plant material. The seedlings which did persist showed eventual stimulation of growth which become apparent at differing times depending on the material incorporated

Development of sputtered techniques for thrust chambers, task 1

Filler materials proposed for use in the sputter fabrication regeneratively cooled thrust chambers were evaluated. Low melting castable alloys, CERROBEND. CERROCAST, and CERROTRU, slurry applied SERMETEL 481 and flame-sprayed aluminum were investigated as filler materials. Sputter deposition from a cylindrical cathode inverted magnestron was used to apply an OFHC copper closeout layer to filled OFHC copper ribbed-wall cylindrical substrates. The sputtered closeout layer structure was evaluated with respect to filler material contamination, predeposition machining and finishing operations, and deposition parameters. The application of aluminum by flame-spraying resulted in excessiver filler porosity. Though the outgassing from this porosity was found to be detrimental to the closeout layer structure, bond strengths in excess of 10,500 psi were achieved. Removal of the aluminum from the grooves was readily accomplished by leaching in a 7.0 molar solution of sodium hydroxide at 353 K. Of the other filler materials evaluated, CERROTRU was found to be the most suitable material with respect to completely filling the ribbed-wall cylinders and vacuum system compatibility. However, bond contamination resulted in low closeout layer bond strength with the CERROTRU filler. CERROBEND, CERROCAST, and SERMETEL 481 were found to be unacceptable as filler materials