Dust devils on Mars: Effects of surface roughness on particle threshold

Abstract not available

Launching Literacy in After-School Programs: Early Lessons from the CORAL Initiative

The James Irvine Foundation launched the Communities Organizing Resources to Advance Learning (CORAL) initiative in 1999 with the goal of improving the academic achievement of children in the lowest-performing schools in five California cities. In 2004, CORAL adopted a more targeted approach toward reaching this goal by integrating a regular schedule of literacy instruction into its after-school programs. This interim report, based on research conducted between Fall 2004 and Summer 2005, documents CORALs progress toward implementing high-quality and consistent literacy programming. The report presents early results in terms of youths positive reading gains and describes the program components that appear to have contributed to these gains. It also identifies challenges CORAL sites faced and successful strategies for addressing those challenges

Nurses\u27 Alumnae Association Bulletin - Volume 2 Number 3

The Jefferson Nurse Letter from the President Delegates to Biennial Convention Attention Blood Transfusion - Plasma Unit Life in the Army Nurse Corps Secretary\u27s Report Elected to New Office 1892-1942 Progress or Alumnae Association 1892-1942 Report of the School of Nursing Staff News Please Change My Address Air Cooled Red Cross Report Fingerprinting Graduates in the U.S. Army and Navy Degrees Received Promotions Jubilee Report Engagements Marriages Births New Positions - 1941-1942 New Positions on the Nursing Staff of the Hospita

Hormones and temporal components of speech: sex differences and effects of menstrual cyclicity on speech

Voice onset time (VOT) is a salient acoustic parameter of speech which signals the “voiced” and “voiceless” status of plosives in English (e.g. the initial sound in ‘bat’ vs. the initial sound in ‘pat’). As a micro-temporal acoustic parameter, VOT may be sensitive to changes in hormones which may affect the neuromuscular systems involved in speech production. This study adopted a novel approach by investigating the effects of menstrual cycle phase and sex on VOT. VOT data representing the 6 plosives of English (/p b t d k g/) were examined for 7 women (age 20-23 years) at two phases of the menstrual cycle (day 18-25: High Estrogen and Progesterone; day 2-5: Low Estrogen and Progesterone). Results indicated that menstrual cycle phase had a significant interaction with the identity of the plosive (F (5,30) = 5.869, P .05), or the contrast between voiced and voiceless cognates (F (1,10) = .407, P > .05). In contrast, the high hormone phase VOT samples displayed significant plosive by sex interactions (F (5,50) = 4.442, P < .005). In addition, significant sex differences were found for the contrasts between cognate voiced and voiceless plosives (F (1,10) = 5.019, P < .05); the women displayed a more marked voiced/voiceless contrast. The findings suggest that ovarian hormones play some role in shaping some temporal components of speech

Thionins

The general designation of thionins has been proposed for a family of homologous peptides that includes purothionins, which were first isolated from wheat seeds (Balls el #/., 1942) and their homologues from various taxa that have been named viscotoxins and crambins (see Garcia-Olmedo el al., 1989). The crystalline protein material obtained from lipid extracts of wheat endosperm was designated "purothionins" because of its high sulphur content (Balls el al., 1942). This material was found to have bactericidal and fungicidal properties (Stuart and Harris, 1942), to inhibit fermentation of wheat mashes (Balls and Harris, 1944), and to be toxic to laboratory animals (Coulson el al„ 1942). The toxic properties of mistletoes were ascribed to the viscumin lectin and to a mixture of small basic proteins, designated - "viscotoxins" (Samuelsson, 1974). In a study of the seeds of the Abyssinian cabbage {Crambe abyssinica)^ a high-sulphur crystalline protein was obtained from the aqueous acetone extracts and designated "crambin" (Van Ettcn e/<?/., 1965)

Spin-orbit and solvent effects in the luminescent [re6q8(ncs)6]4-, q=s, se, te clusters: molecular sensors and molecular devices

Indexación: ScieloRelativistic time-dependent density functional (TDDFT) calculations including spin orbit interactions via the zero order regular approximation (ZORA) and solvent effects using the COSMO model were carried out on the [Re6Q8(NCS)6]4- , (Q = S, Se, Te) clusters. These calculations indicate that the lowest energy allowed electronic transitions are characterized by being of LMCT type. The calculated absorption maximum tends to shift to longer wavelengths as the face-capping chalcogenide ligand becomes heavier. Thus our calculations predict that the [Re6Te8(NCS)6]4- cluster might be also luminescent. Due to the unusual properties exhibited by these and other isoelectronic and isostructural hexarhenium (III) chalcogenide clusters, hexamolybdenum halide clusters and hexatungsten halide clusters, we propose here the design of nanodevices, such as, molecular sensors and molecular nanocells for molecular electronics.http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000100010&nrm=is

The Peterson Ranch Site (41HS253), A Late 17th to Early 18th Century Ancestral Caddo Cemetery in the Little Cypress Creek Basin, Harrison County, Texas

The Peterson Ranch site (41HS253) is a late 17th to early 18th century Caddo cemetery in the Little Cypress Creek basin in the East Texas Pineywoods. The cemetery, on Gray’s Creek, was found and excavated in 1962 by a number of collectors from the Marshall, Texas, area. In 1963 the cemetery area was destroyed by the construction of an oil well pad. Most of the collectors kept cursory notes on their excavations at the site, which consisted of plan maps showing the orientation of the burial pits, the human remains in the graves, and the location and kinds of some of the funerary offerings placed in the grave to accompany the deceased to the House of Death in the Sky. Fray Casanas commented in 1691 that the Caddo buried “their dead with all their arms and utensils which each possesses.” The kinds of items placed in Caddo burials, especially the vessels—since they are by far the most common burial offerings—can provide unique insights into how different Caddo groups treated the dead, and what such differences may mean regarding diverse view on life and death among contemporaneous Caddo groups. The information on the cemetery excavations and burial offerings from the Peterson Ranch site has been reconstructed from notes and drawings on file at the Texas Archeological Research Laboratory at The University of Texas at Austin (TARL). To my knowledge, the funerary offerings from the burials at the site have not been documented by a professional archaeologist, and it is presently unknown what the current provenience(s) of the collections are

“Always Ready for any Sticky Job”: The Canadian Corps of (Civilian) Firefighters in the Second World War

The Canadian Corps of (Civilian) Firefighters was created. In 1942 to assist the British National Fire Service (NFS) in fighting fires caused by German bombings. Some 400 specially-recruited Corps members served in Britain from 1942 to 1944 under often very hazardous conditions. Its story remains one of the forgotten and more unique Canadian contributions to the war effort