294,230 research outputs found
Recommended from our members
A Gravitational Redshift Determination Of The Mean Mass Of DBA White Dwarfs
No full textWe measure apparent velocities (v(app)) of the H alpha and H beta Balmer line cores for 16 helium-dominated white dwarfs (WDs) using optical spectra taken for the European Southern Observatory SN Ia progenitor survey (SPY). Following the gravitational redshift method employed by Falcon et al. [1], we find a mean apparent velocity of (v(app)) = 39.58 +/- 4.41 km s(-1) and use it to derive a mean mass of < M > = 0.701(-0.046)(+0.042) M(circle dot). Though the sample is small, the mean mass appears to be larger than the mean mass of DAs derived using the same method [0.647(-0.014)(+0.013) M(circle dot), 1]Astronom
Roland H. White, Gunner, Royal Canadian Navy
No full textRoland H White of Trout River in his navy uniform
Richard White Collection
No full textThe Richard White Collection, which covers the period 1905 to 1920, includes correspondence between the Director of the Maryland Agricultural Experiment Station, H. J. Patterson, and the Superintendent of the Ridgely Sub-station, Charles Opperman. The two men discuss administrative details concerning the setup of the farm as an experiment sub-station, including questions about how expenses will be handled and what repairs should be made to the existing structures. The correspondence also contains descriptions of the experimental work taking place on the farm as well as plans for future work. In addition, the series contains an annual report from 1917 and two detailed inventories of items on the Ridgely property in 1917 and 1920. Maps show the boundaries of the farm and its field divisions. These materials date from 1914 to 1920. The collection also contains academic reports of Herbert James White, a student of the Maryland Agricultural College from 1905 until 1911
The workshop as the work: white anti-racism organising in 1960s, 70s, and 80s US social movements
No full textThis thesis explores the rise of anti-racism workshops developed by white activists in various United States social movements from the late 1960s through the mid-1980s. The shifting ideology of the black freedom movement in the late 1960s, from integration to Black Power, transformed white activists‘ place within racial justice struggles. While recent scholarship has begun to turn its attention towards whites‘ ongoing racial justice activities, one of the most radical and widespread of these efforts is consistently overlooked: anti-racism workshops. Increasingly prevalent from the late 1960s through to the diversity-trainings explosion of the 1990s, this thesis demonstrates that these workshops had their roots in the black freedom, women‘s liberation and gay liberation movements. White activists from these movements led these workshops in order to examine white racial domination and privilege within both leftist social movements and larger US society.
Analysing case studies from the black freedom, women‘s liberation and gay liberation/rights movements, this thesis explores the foundational assumptions of anti-racism workshops. It seeks to explain how and why these efforts sought to frame race and racism as issues of knowledge and consciousness and why such efforts constituted radical praxis. It is argued that early anti-racism workshops were pedagogical projects that sought to confront the racial ignorance that structured the lives of whites in the US, including progressives and their liberation movements. This thesis draws attention to the efficacy and power of these workshops in terms of their epistemological effects, in the transformations they brought about in whites‘ understanding, or awareness, of racial realities
Postcard from A. H. R., Cordova, Alabama, to Willie T. White, Birmingham, Alabama, March 28, 1920
No full textPostcard from A. H. R., Birmingham, Alabama, to Willie T. White, Rockford, Alabama, January 31, 1921
No full textWalter H. White Interview, December 1, 1994
No full textWalter H. White discusses his involvement in the Boone and Crockett Club in the late 20th century. He shares his opinion about the Club’s establishment of the Theodore Roosevelt Memorial Ranch in Montana as well as addresses his concerns with current record-keeping strategies and the lack of political influence the Club has on conservationist issues. White talks about the work of the Heads and Horns collection and on various Club committees, including the Records Committee. White expresses his disinterest in the Club’s efforts to diversify its membership and the relocation of its headquarters to Missoula, Montana. He briefly describes a hunting trip in Alaska in 1954 where he shot a Kodiak bear.https://scholarworks.umt.edu/booneandcrockett_oralhistory/1021/thumbnail.jp
Letter in letterbook from J. H. Woodward to C. F. H. White, Fall River, Massachusetts, October 14, 1885
No full textA document from an extensive collection spanning four generations of the Woodward family that operated merchant pig iron companies in West Virginia and Alabama. The collection begins with Stimpson Harvey Woodward (S. H. Woodward), a native of Massachusetts, who moved from Pittsburgh to Wheeling, West Virginia in 1852. He had interests in an iron company as early as 1852 in West Virginia and began Alabama operations in 1869. The family business continued in Alabama until the death of S. H. Woodward's great-grandson in 1965
An improved thick-film piezoelectric material by powder blending and enhanced processing parameters
No full textThis paper details improvements of the d33 coefficient for thick-film lead zirconate titanate (PZT) layers. In particular, the effect of blending ball and attritor milled powders has been investigated. Mathematical modeling of the film structure has produced initial experimental values for powder combination percentages. A range of paste formulations between 8:1 and 2:1 ball to attritor milled PZT powders by weight have been mixed into a screen-printable paste. Each paste contains 10% by weight of lead borosilicate glass and an appropriate quantity of solvent to formulate a screen printable thixotropic paste. A d33 of 63.5 pC/N was obtained with a combination of 4:1 ball milled to attritor milled powder by weight. The improved paste combines the high d33 values of ball and the consistency of attritor milled powder. The measured d33 coefficient was further improved to 131 pC/N by increasing the furnace firing pro-file to 100
Comparative BAC-based mapping in the white-throated sparrow, a novel behavioral genomics model, using interspecies overgo hybridization
No full textBACKGROUND
The genomics era has produced an arsenal of resources from sequenced organisms allowing researchers to target species that do not have comparable mapping and sequence information. These new "non-model" organisms offer unique opportunities to examine environmental effects on genomic patterns and processes. Here we use comparative mapping as a first step in characterizing the genome organization of a novel animal model, the white-throated sparrow (Zonotrichia albicollis), which occurs as white or tan morphs that exhibit alternative behaviors and physiology. Morph is determined by the presence or absence of a complex chromosomal rearrangement. This species is an ideal model for behavioral genomics because the association between genotype and phenotype is absolute, making it possible to identify the genomic bases of phenotypic variation.
FINDINGS
We initiated a genomic study in this species by characterizing the white-throated sparrow BAC library via filter hybridization with overgo probes designed for the chicken, turkey, and zebra finch. Cross-species hybridization resulted in 640 positive sparrow BACs assigned to 77 chicken loci across almost all macro-and microchromosomes, with a focus on the chromosomes associated with morph. Out of 216 overgos, 36% of the probes hybridized successfully, with an average number of 3.0 positive sparrow BACs per overgo.
CONCLUSIONS
These data will be utilized for determining chromosomal architecture and for fine-scale mapping of candidate genes associated with phenotypic differences. Our research confirms the utility of interspecies hybridization for developing comparative maps in other non-model organisms
- …
