Jeff Rasley: Mountains of Meaning

Interview with Pam Richards for Seeds Born to Light about the author’s experience in the Himalayas and Basa Village

Student Loan Defaulters Compared with Repayers: A Texas Case Study

This research compares student loan defaulters\u27 and repayers\u27 attitudes about vocational education in Texas. Interviews with loan recipients indicate that student loan defaults are affected by how much students are pressured to enroll in a program, their understanding of the loan program when they first sign an application, and how well their vocational education equips them to take a job. Such findings are increasingly important to policymakers, as the struggle for federal dollars increases and vocational students remain one of the largest groups of recipients and defaulters in the Federal Stafford Loan Program (formerly the Guaranteed Student Loan Program)

Aquaculture Potential for Hornyhead Chubs

The hornyhead chub (Nocomis biguttatus) is one of the most valuable baitfish species in Minnesota. Culturing hornyhead chub supplies valuable baitfish to anglers and generates income for fish farmers and baitshop owners in Minnesota and other northern states. Hornyhead chubs can be reared in aquaculture facilities and sold through baitshops to anglers, who are often willing to pay $5 to$6 per dozen. Because it is illegal to import baitfish into Minnesota, such prices put harvesting pressure on wild populations. Culturing hornyhead chubs relieves pressure on wild populations while keeping the market adequately supplied with this desirable bait. This technical bulletin describes how to spawn and grow hornyhead chubs produced in an outdoor spawning system and an indoor over-winter growout facility

The Aveline's Hole 9 Cranium: A Partial Solution to a Long Standing Enigma

Aveline's Hole is both one of the best-known sites with early human skeletal material in Britain and one of the most problematic in its history. First discovered and explored at the close of the 18th century, it yielded an estimated burial count of at least fifty individuals. Twentieth century work suggested a Late Upper Palaeolithic date for the material, in a context that might be called Creswellian. A recent dating programme places the human remains into the early Holocene and confirms the site as a Mesolithic cemetery in all senses of that word. Though a number of partial studies of the material have been published, no full description was attempted or published prior to the destruction of much of the collection in 1940. Recently one of us published a full study of the site history and a description and analysis of the surviving material. However, that study did note the small number of intact but undated crania that have been attributed to the site at various times. This study looks at one of these, denoted as AH9 and never previously described, in the aftermath of direct radiocarbon dating. Both direct dating and indirect analyses indicate that it is highly unlikely that this skull was part of the Mesolithic assemblage from this site."The work of CM was made possible by grants from the Canada Council and the Social Sciences and Humanities Research Council of Canada. The dating of the specimen was funded by a grant through NERC’s ORADS programme."https://www.ubss.org.uk/resources/proceedings/vol25/UBSS_Proc_25_3_275-294.pd

Molecular Gas in Redshift 6 Quasar Host Galaxies

We report our new observations of redshifted carbon monoxide emission from six z~6 quasars, using the PdBI. CO (6-5) or (5-4) line emission was detected in all six sources. Together with two other previous CO detections, these observations provide unique constraints on the molecular gas emission properties in these quasar systems close to the end of the cosmic reionization. Complementary results are also presented for low-J CO lines observed at the GBT and the VLA, and dust continuum from five of these sources with the SHARC-II bolometer camera at the CSO. We then present a study of the molecular gas properties in our combined sample of eight CO-detected quasars at z~6. The detections of high-order CO line emission in these objects indicates the presence of highly excited molecular gas, with estimated masses on the order of 10^10 M_sun within the quasar host galaxies. No significant difference is found in the gas mass and CO line width distributions between our z~6 quasars and samples of CO-detected $1.4\leq z\leq5$ quasars and submillimeter galaxies. Most of the CO-detected quasars at z~6 follow the far infrared-CO luminosity relationship defined by actively star-forming galaxies at low and high redshifts. This suggests that ongoing star formation in their hosts contributes significantly to the dust heating at FIR wavelengths. The result is consistent with the picture of galaxy formation co-eval with supermassive black hole (SMBH) accretion in the earliest quasar-host systems. We investigate the black hole--bulge relationships of our quasar sample, using the CO dynamics as a tracer for the dynamical mass of the quasar host. The results place important constraints on the formation and evolution of the most massive SMBH-spheroidal host systems at the highest redshift.Comment: 34 pages, 8 figures, accepted for publication in Ap

2006-2007 Performance Forum - December 1, 2006

El curso Nivelación de Matemática para Ciencias de la Salud tiene como finalidad proporcionar las herramientas fundamentales de Matemáticas que permitan al alumno alcanzar una sólida formación que le servirá para llevar con éxito el curso posterior de Matemáticas para Ciencias de la Salud nivelándolo y afianzando sus saberes previos.Los capítulos que abarca el curso son temas correspondientes a tópicos de aritmética álgebra trigonometría y geometría analítica básicos

Selection of Leafy Green Vegetable Varieties for a Pick-and-Eat Diet Supplement on ISS

No abstract availabl

Comparison of the complete genome sequencesof Bifidobacterium animalis subsp. lactis DSM 10140 and Bl-04

Bifidobacteria are important members of the human gut flora, especially in infants. Comparative genomic analysis of two Bifidobacterium animalis subsp. lactis strains revealed evolution by internal deletion of consecutive spacer-repeat units within a novel clustered regularly interspaced short palindromic repeat locus, which represented the largest differential content between the two genomes. Additionally, 47 single nucleotide polymorphisms were identified, consisting primarily of nonsynonymous mutations, indicating positive selection and/or recent divergence. A particular nonsynonymous mutation in a putative glucose transporter was linked to a negative phenotypic effect on the ability of the variant to catabolize glucose, consistent with a modification in the predicted protein transmembrane topology. Comparative genome sequence analysis of three Bifidobacterium species provided a core genome set of 1,117 orthologs complemented by a pan-genome of 2,445 genes. The genome sequences of the intestinal bacterium B. animalis subsp. lactis provide insights into rapid genome evolution and the genetic basis for adaptation to the human gut environment, notably with regard to catabolism of dietary carbohydrates, resistance to bile and acid, and interaction with the intestinal epithelium. The high degree of genome conservation observed between the two strains in terms of size, organization, and sequence is indicative of a genomically monomorphic subspecies and explains the inability to differentiate the strains by standard techniques such as pulsed-field gel electrophoresis

Rabbit Knee Joint Biomechanics: Motion Analysis and Modeling of Forces during Hopping

Although the rabbit hindlimb has been commonly used as an experimental animal model for studies of osteoarthritis, bone growth and fracture healing, the in vivo biomechanics of the rabbit knee joint have not been quantified. The purpose of this study was to investigate the kinematic and kinetic patterns during hopping of the adult rabbit, and to develop a model to estimate the joint contact force distribution between the tibial plateaus. Force platform data and three-dimensional motion analysis using infrared markers mounted on intracortical bone pins were combined to calculate the knee and ankle joint intersegmental forces and moments. A statically determinate model was developed to predict muscle, ligament and tibiofemoral joint contact forces during the stance phase of hopping. Variations in hindlimb kinematics permitted the identification of two landing patterns, that could be distinguished by variations in the magnitude of the external knee abduction moment. During hopping, the prevalence of an external abduction moment led to the prediction of higher joint contact forces passing through the lateral compartment as compared to the medial compartment of the knee joint. These results represent critical data on the in vivo biomechanics of the rabbit knee joint, which allow for comparisons to both other experimental animal models and the human knee, and may provide further insight into the relationships between mechanical loading, osteoarthritis, bone growth, and fracture healing