Alteration mineralogy and pathfinder element inventory of the McArthur River unconformity-related uranium deposit, Canada

The chemical compositions, modal mineralogy, and textural variability of interstitial minerals in sandstones of the Athabasca Group strata in the vicinity of the McArthur River unconformity-related uranium deposit were characterized using a combination of short wave infrared spectroscopy (SWIR), lithogeochemistry, scanning electron microscopy (SEM), electron probe microanalysis (EPMA) and laser ablation mass spectrometry (LA-ICP-MS) to determine the residence sites of pathfinder trace elements. The importance of integrating in-situ mineral chemistry with whole-rock analyses resides in the possibility to establish the mineralogical and paragenetic context of geochemical signatures in defining the footprint of the deposit. Located in the Athabasca Basin, Saskatchewan, Canada, the deposit is situated below ~550 m of quartz arenitic sandstones that are strongly silicified between depths of approximately 200-400 m. The silicified layer exhibits significant control on the distribution of alteration minerals, and appears to have restricted both the primary and secondary dispersion of pathfinder trace elements, which include U, radiogenic Pb isotopes, V, Ni, Co, Cu, Mo, As, Zn, and REEs. Diagenetic background sandstones contain assemblages of illite, dickite, aluminum-phosphate-sulfate (APS) minerals, apatite, and Fe-Ti oxide minerals. Altered sandstones contain assemblages of Al-Mg chlorite (sudoite), alkali-deficient dravite, APS minerals, kaolinite, illite, and oxide minerals. Throughout the sandstones, APS minerals account for the majority of the Sr and LREE concentrations, whereas late pre-ore chlorite, containing up to 0.1 wt.% Ni, accounts for the majority of Ni concentrations. Cobalt, Cu, Mo, and Zn occur predominantly in cryptic sub-micron sulfide and sulfarsenide inclusions in clay mineral aggregates and in association with paragenetically-late Fe-Ti oxides. Uranium occurs predominantly in cryptic micro-inclusions associated with pyrite in late-stage quartz overgrowths, and with paragenetically late Fe-Ti oxide micro-inclusions in kaolinite. Additionally, up to 0.2 wt.% U is cryptically distributed in post-ore Fe-oxide veins. Early diagenetic apatite, monazite and apatite inclusions in detrital quartz, and detrital zircon also contribute significant U and HREE to samples analyzed with an aggressive leach such as Aqua Regia. Detailed LA-ICP-MS chemical mapping of interstitial assemblages, detrital grains, and cements provides new insights into the distribution and inventory of pathfinder elements in the footprint of the McArthur River uranium deposit.

The Mormon Trail: Historic Byway Inventory and Evaluation, 1998

A three-step approach was used to do the study of the Mormon Trail. These involved research, field data collection and evaluation of the project corridors. Step one involved research on the location of the Trail, associated sites and the historic land use near the Trail between 1846 and 1868. The next step involved defining roads to be inventoried and the actual field survey. Step three involved evaluation of the inventoried corridors. This evaluation procedure was based on the methodology currently used by Iowa DOT to evaluate candidate scenic byway routes but involved different evaluation factors. The numeric results of the two analyses can be directly compared. The results of the field survey and evaluation are shown in detail by county. Inventory and evaluation procedures for historic and cultural byways are discussed in Appendix A.

Qualités psychométriques de la version canadienne-française du Geriatric Anxiety Inventory

Afin de pallier au manque d’outils de dépistage efficaces et adaptés à la population âgée, le Geriatric Anxiety Inventory (GAI) et une forme courte (GAI-SF) ont été développés pour évaluer la sévérité des symptômes anxieux chez les aînés. La présente étude cherchait à évaluer les propriétés psychométriques de la version canadienne-française du GAI dans sa forme complète (GAI-FC) et courte (GAI-FC-SF) auprès de la population âgée québécoise francophone. Trois cent trente et une personnes de 65 ans et plus vivant dans la communauté ont participé à cette étude. Les propriétés psychométriques s’avèrent satisfaisantes pour le GAI-FC et le GAI-FC-SF avec, respectivement, une cohérence interne satisfaisante (α = ,94 et ,83), une validité convergente adéquate (r = ,50 à ,86 avec des instruments de mesure évaluant des concepts similaires ou reliés à l’anxiété), une bonne fidélité test-retest (r = ,89 et ,85) ainsi qu’une structure unifactorielle. Les résultats de cette étude appuient l’utilisation du GAI-FC et du GAI-FC-SF pour l’évaluation de l’anxiété chez les aînés québécois. Le GAI-FC-SF semble une alternative intéressante au GAI-FC comme outil de dépistage lorsque le temps disponible pour l’évaluation est limité. Mots-clés: Geriatric Anxiety Inventory, aînés, anxiété, trouble anxieux, instrument d’évaluation.

Clinical and functional outcomes of acute lower extremity compartment syndrome at a Major Trauma Hospital

Background: Acute lower extremity compartment syndrome (CS) is a condition that untreated causes irreversible nerve and muscle ischemia. Treatment by decompression fasciotomy without delay prevents permanent disability. The use of intracompartmental pressure (iCP) measurement in uncertain situations aids in diagnosis of severe leg pain. As an infrequent complication of lower extremity trauma, consequences of CS include chronic pain, nerve injury, and contractures. The purpose of this study was to observe the clinical and functional outcomes for patients with lower extremity CS after fasciotomy. Methods: Retrospective chart analysis for patients with a discharge diagnosis of CS was performed. Physical demographics, employment status, activity at time of injury, injury severity score, fracture types, pain scores, hours to fasciotomy, iCP, serum creatine kinase levels, wound treatment regimen, length of hospital stay, and discharge facility were collected. Lower extremity neurologic examination, pain scores, orthopedic complications, and employment status at 30 days and 12 months after discharge were noted. Results: One hundred twenty‑four patients were enrolled in this study. One hundred and eight patients were assessed at 12 months. Eighty‑one percent were male. Motorized vehicles caused 51% of injuries in males. Forty‑one percent of injuries were tibia fractures. Acute kidney injury occurred in 2.4%. Mean peak serum creatine kinase levels were 58,600 units/ml. Gauze dressing was used in 78.9% of nonfracture patients and negative pressure wound vacuum therapy in 78.2% of fracture patients. About 21.6% of patients with CS had prior surgery. Nearly 12.9% of patients required leg amputation. Around 81.8% of amputees were male. Sixty‑seven percent of amputees had associated vascular injuries. Foot numbness occurred in 20.5% of patients and drop foot palsy in 18.2%. Osteomyelitis developed in 10.2% of patients and fracture nonunion in 6.8%. About 14.7% of patients underwent further orthopedic surgery. At long‑term follow‑up, 10.2% of patients reported moderate lower extremity pain and 69.2% had returned to work. Conclusion: Escalation in leg pain and changes in sensation are the cardinal signs for CS rather than reliance on assessing for firm compartments and pressures. The severity of nerve injury worsens with the delay in performing fasciotomy. Standardized diagnostic protocols and wound treatment strategies will result in improved outcomes from this complication.

Central Stores Inventory: Employing the IBM 1410 Magnetic Tape Computer System

The Property and Equipment Department has a central supply of automotive parts, tools, and maintenance supplies. This central supply is used to supply the repair shop and also to supply parts to the various field garages and all departments of the Commission. The old procedure involved keeping track manually of all of the parts, which involved some 22,000 items. All records, billings, arid re-order points were kept manually. Mani times the re-order points were located by reaching into a bin and finding nothing there. Desiring to improve this situation, an inventory control system was established for use on the computer. A complete record of the supplies that are stored in the central warehouse was prepared and this information was used to make a catalog. Each time an item is issued or received, it is processed through the inventory program. When the re-order point is reached, a notice is given to reorder. The procedure for taking inventory has been improved. A voucher invoice is now prepared by the computer for all issues to departments. These are some of the many benefits that have been de rived from this system.

Automated Collection of Sign Inventory Information by Integrating Global Positioning System (GPS) with Videologging Data Collection Activities, 1995

Advances in communication, navigation and imaging technologies are expected to fundamentally change methods currently used to collect data. Electronic data interchange strategies will also minimize data handling and automatically update files at the point of capture. This report summarizes the outcome of using a multi-camera platform as a method to collect roadway inventory data. It defines basic system requirements as expressed by users, who applied these techniques and examines how the application of the technology met those needs. A sign inventory case study was used to determine the advantages of creating and maintaining the database and provides the capability to monitor performance criteria for a Safety Management System. The project identified at least 75 percent of the data elements needed for a sign inventory can be gathered by viewing a high resolution image.

Italian Ragweed Pollen Inventory

This study provides the first spatially detailed and complete inventory of Ambrosia pollen sources in Italy – the third largest centre of ragweed in Europe. The inventory relies on a well tested top-down approach that combines local knowledge, detailed land cover, pollen observations and a digital elevation model that assumes permanent ragweed populations mainly grow below 745m. The pollen data were obtained from 92 volumetric pollen traps located throughout Italy during 2004-2013. Land cover is derived from Corine Land cover information with 100m resolution. The digital elevation model is based on the NASA shuttle radar mission with 90m resolution. The inventory is produced using a combination of ArcGIS and Python for automation and validated using cross-correlation and has a final resolution of 5km x 5km. The method includes a harmonization of the inventory with other European inventories for the Pannonian Plain, France and Austria in order to provide a coherent picture of all major ragweed sources. The results show that the mean annual pollen index varies from 0 in South Italy to 6779 in the Po Valley. The results also show that very large pollen indexes are observed in the Milan region, but this region has smaller amounts of ragweed habitats compared to other parts of the Po Valley and known ragweed areas in France and the Pannonian Plain. A significant decrease in Ambrosia pollen concentrations was recorded in 2013 by pollen monitoring stations located in the Po Valley, particularly in the Northwest of Milan. This was the same year as the appearance of the Ophraella communa leaf beetle in Northern Italy. These results suggest that ragweed habitats near to the Milan region have very high densities of Ambrosia plants compared to other known ragweed habitats in Europe. The Milan region therefore appears to contain habitats with the largest ragweed infestation in Europe, but a smaller amount of habitats is a likely cause the pollen index to be lower compared to central parts of the Pannonian Plain. A low number of densely packed habitats may have increased the impact of the Ophraella beetle and might account for the documented decrease in airborne Ambrosia pollen levels, an event that cannot be explained by meteorology alone. Further investigations that model atmospheric pollen before and after the appearance of the beetle in this part of Northern Italy are needed to assess the influence of the beetle on airborne Ambrosia pollen concentrations. Future work will focus on short distance transport episodes for stations located in the Po Valley, and long distance transport events for stations in Central Italy that exhibit peaks in daily airborne Ambrosia pollen levels.

Propiedades psicométricas del Sexuality and the Mental Retardation Attitude Inventory (SMRAI) en estudiantes universitarios de Lima

El objetivo fue analizar las propiedades psicométricas del Sexuality and the Mental Retardation Attitude Inventory (SMRAI) en una muestra de 144 estudiantes universitarios de la carrera de psicología de una universidad privada de Lima Metropolitana, del 2do al 9no ciclo, de los cuales 44 fueron varones (30.6%) y 100 mujeres (69.4%), con edades comprendidas entre 17 y 43 años (M: 21.9). El análisis factorial confirmatorio realizado revela que dicha prueba presenta una estructura de dos factores con índices de ajuste adecuados. Por otro lado, con relación a la confiabilidad del constructo mediante el coeficiente Rho se obtuvo un indicador de .80. Se concluye que la SMRAI cuenta con propiedades psicométricas adecuadas para implementarlo en estudios orientados a conocer más facetas de las actitudes hacia la sexualidad de las personas con discapacidad intelectual.

Quantifying Barriers to Meditation as a Health Behavior: Exploratory and Confirmatory Factor Analysis of the Determinants of Meditation Practice Inventory

Although the benefits of mindfulness meditation practices have been widely documented, research data suggest that there are barriers to regularly engaging in meditation behavior. In order to explore research questions pertaining to meditation initiation and adherence, psychometrically valid scales to assess barriers to meditation practice are necessary. The aim of the present study was to explore the factor structure and construct validity of the Determinants of Meditation Practice Inventory (DMPI) (Williams et al., 2011), a perceived barriers to meditation scale. Exploratory and confirmatory factor analyses along with construct validity tests were performed on data obtained from two large, community samples. Results supported the DMPI as a valid scale assessing perceived barriers with four factors, Lack of Interest, Knowledge Concerns, Pragmatic Concerns and Sociocultural Beliefs. The present study offers a DMPI-revised scale that may be reliably used to assess attitudes and beliefs that might impede meditation behavior.

Contributos para a validação do Music Performance Anxiety Inventory for Adolescents (MPAI-A) na língua portuguesa

A ansiedade na performance musical (MPA-music performance anxiety) surge como um fenómeno fisiológico, psicológico, cognitivo e emocional que abrange todos os músicos independentemente da sua idade, experiência, dedicação ou tipo de instrumento. Pelo seu carácter crónico, e pela dificuldade que provoca na progressão na carreira, a MPA é uma patologia nefasta que, quando toma proporções exageradas, consegue afastar os músicos do seu ideal e objetivo de vida, pois o prazer de tocar é substituído pelo medo de ser julgado e observado por uma plateia ou júri. Pela necessidade de conhecer e saber reagir perante esta situação é imperativo aprofundar os conhecimentos acerca desta, para uma identificação precoce dos alunos em quem a ansiedade atinge níveis preocupantes nas atuações, quer a solo ou em orquestra. A correta abordagem deste problema por parte dos professores pode ser benéfica, levando os alunos a confiarem mais nas suas capacidades e a obterem resultados positivos. Este trabalho surge da necessidade de conseguir quantificar a ansiedade nos adolescentes e para tal o uso de uma escala previamente existente em inglês. O objetivo é explorar a ansiedade na performance musical através da tradução e aplicação do Music Performance Anxiety Inventory- Adolescents (MPAI-A) para a língua portuguesa, contribuindo para a sua posterior validação.

Spliceosomal small nuclear ribonucleoprotein particle trafficking and maturation in the nuclear compartment

We show for the first time that upon injection into the cytoplasm of the oocyte, fluorescein-labeled spliceosomal snRNAs, in the context of functional snRNPs, are targeted to elongating pre-mRNAs. This finding presents us with a novel assay with which to dissect the mechanism by which snRNPs are targeted to nascent pre-mRNA transcripts. Two critical advantages offered by this system are immediately evident. First, it allows us to investigate the mechanisms employed to recruit snRNPs as it actually transpires within the realm of the cell nucleus. Second, it allows a genome-wide analysis of snRNP recruitment to nascent transcripts, and, hence, the conclusions drawn from these studies do not depend on the sequence of any particular promoter or pre-mRNA. Indeed, it is with this assay that we have stumbled upon a most unanticipated discovery: Contrary to the current paradigm, the co-transcriptional recruitment of splicing snRNPs to nascent transcripts is not contingent on their role in splicing in vivo. Based on these and other data, we have constructed a two-step recruitment-loading model wherein snRNPs are first recruited to pre-mRNA transcripts and only then loaded directly onto cis-acting sequences on nascent pre-mRNA. While conducting studies on snRNP trafficking, a new discovery was made. We found that the lampbrush chromosomes could be visualized by light microscopy in vivo, and that these chromosomes have an architecture that is identical with those in formaldehyde treated nuclear spread preparations. Importantly, we now have the first system with which we can examine the dynamic interactions of macromolecules with specific RNA polymerase II transcriptional units in the live nucleus.