3D lithogeochemical footprint of the Millennium-McArthur river unconformity-type uranium deposits, Saskatchewan, Canada

The Millennium and McArthur River unconformity-related uranium deposits in the southeastern Athabasca Basin, Saskatchewan, are overlain by hydrothermally altered sandstones of the Manitou Falls Formation. The distal lithogeochemical footprints in these sandstones, from unconformity to subcrop, are useful for vectoring toward mineralization using simple major and trace element analyses. Large first order alteration envelopes are defined by molar element ratios K/Al vs. Mg/Al, which surround smaller, second order trace element haloes. At Millennium, median Mg/K molar ratios >0.2 define a 10-km alteration envelope. Values increase significantly within 2 km of the deposit, coinciding with Mo, Ga, and REE enrichment 100s of metres vertically above the deposit. At McArthur River, K/Al <0.06 and Mg/Al <0.4 (molar), and elevated Ba, Sr, Ga, and Cs, exhibit haloes 4–8 km along strike of the P2 trend, 100s of metres above the McArthur River deposit

A new self-assessment teaching assistant survey for growth and development

During their time as Teaching Assistants (TAs), graduate students develop a variety of skills, knowledge, and attitudes, based on teaching and related facilitation experiences. As TAs move on to future opportunities, their prior experiences form a foundation upon which additional teaching experience builds. Presently, there are few tools to gauge pedagogical growth during graduate student involvement as TAs in a specific post-secondary course, or as a consequence of their participation in a specialized TA training or teaching program.&nbsp; We created a model for TA development in SCIE 113 (First-year Seminar in Science) at the University of British Columbia. Based on this model, we designed a new survey for TAs to self-assess skills, knowledge and attitudes that they bring with them from prior experience, and those that they develop or further during their time as a TA in SCIE113. We administered the survey to 18 current and past SCIE 113 TAs as of December 2015, representing the complete population of TAs. The results showed that SCIE 113 TAs with similar levels of experience shared similar skills, knowledge, and attitudes as assessed by this survey. Those TAs with the most experience had greater abilities in roles previously identified as unique to the course. Others working with graduate students can use or adapt the survey questions to investigate and stimulate the growth of TAs in their course or program

Ethics/Aesthetics

This is the editorial of Autumn 2012 issue of JoLA-Journal of Landscape Architecture. Aesthetics are rearely explicitly addressed in conjunction with ethics in the body of literature examining recent landscape architectural research. The article addresses the relationship between ethics and aesthetics

catena-Poly[[[diaqua­nickel(II)]-di-μ-glycine] dichloride]

In the polymeric title complex, {[Ni(C2H5NO2)2(H2O)2]Cl2}n, the NiII atom lies on an inversion center and is in a distorted octa­hedral NiO6 configuration, with four carboxyl­ate O atoms from four zwitterionic glycine mol­ecules forming the equatorial plane and two water O atoms occupying the axial positions. The Cl− counterions lie in the inter­stices. The NiII complexes are linked into polymeric sheets parallel to the bc plane. These sheets are then further connected into a three-dimensional network by O—H⋯O, O—H⋯Cl and N—H⋯Cl hydrogen bonds, together with weak C—H⋯O inter­actions

Panel 1: Pilot Supply & Industry Consequences Update

Update on current “State Of The Industry” in each panelist’s area of expertise. Panelists are asked to provide a brief perspective on current status, trends, and areas of dynamic change. Aviation Academic Status Macchiarella (ERAU) Regional Airlines Greubel (ExpressJet), Haugaard (Horizon Air), Dee (Republic), Lane (Allegiant) Major Airlines Buyer (United), Winter (JetBlue) ALPA Ryder Air Carrier Training Aviation Rulemaking Committee (ACT/ARC) Duncan (FAA) World Pilot Demand, Trends, Forecasts Davis (Boeing) Report From the Hill Bechdolt (RAA

The Unintended Consequences of a Ban on the Humane Slaughter (Processing) of Horses in the United States

Federal legislation has been proposed to amend the Horse Protection Act to prohibit the shipping, transporting, moving, delivering, receiving, possessing, purchasing, selling, or donation of horses and other equines to be humanely slaughtered (processed) for human consumption, and for other purposes. The intent of the legislation is to enact a ban in the United States on processing horses for human consumption. The legislation does not provide fiscal support that would likely be needed to respond to an ever increasing number of unwanted, neglected, and abused horses. Often times horse neglect and abuse cases originate from a lack of economic resources needed to adequately maintain a horse’s health. While everyone fully supports and is committed to the humane treatment of all horses, there are unintended consequences of banning horse processing. The purpose of this paper is to identify and review the unintended consequences of a ban in the United States on the processing of horses for human consumption: 1. The potential for a large number of abandoned or unwanted horses is substantial. 2. Public animal rescue facilities are currently saturated with unwanted horses. No funding has been allocated to manage a large increase in horses that will likely become the responsibility of these facilities. 3. Cost of maintaining unwanted horses accumulates over time: A conservative estimate of the total cost of caring for unwanted horses, based upon 2005 statistics, is $220 million; Cumulative annual maintenance costs of otherwise processed horses, since the year 2000, would have exceeded more than$513 million in 2005. 4. The export value of horse meat for human consumption was approximately $26 million. A ban on processing would eliminate these annual revenues. 5. The option of rendering equine carcasses is decreasing. Private-land burial and disposal in landfills have a negative impact on the environment. 6. The Bureau of Land Management’s Wild Horse and Burro Adoption Program may be negatively impacted by a ban on horse processing. BLM horses and an increasing number of unwanted horses will be competing for adoption homes. Horse processing facilities offer a humane end-of-life option for approximately 1% of the United States horse population. Tens of thousands of horses could be neglected or abandoned if a processing ban were imposed. The direct economic impact and future unintended–and currently unaccounted for–economic impact of banning horse processing for human consumption are substantial. Proponents have not addressed the inevitable costs of such a ban. Horse owners will realize a direct impact from lower horse sale prices. Local and state governments will be adversely impacted by increased costs of regulation and care of unwanted or neglected horses

A climatology of clouds in marine cold air outbreaks in both hemispheres

A climatology of clouds within marine cold air outbreaks, primarily using long-term satellite observations, is presented. Cloud properties between cold air outbreaks in different regions in both hemispheres are compared. In all regions marine cold air outbreak clouds tend to be low level with high cloud fraction and low-to-moderate optical thickness. Stronger cold air outbreaks have clouds that are optically thicker, but not geometrically thicker, than those in weaker cold air outbreaks. There is some evidence that clouds deepen and break up over the course of a cold air outbreak event. The top-of-the-atmosphere longwave cloud radiative effect in cold air outbreaks is small because the clouds have low tops. However, their surface longwave cloud radiative effect is considerably larger. The rarity of cold air outbreaks in summer limits their shortwave cloud radiative effect. They do not contribute substantially to global shortwave cloud radiative effect and are, therefore, unlikely to be a major source of shortwave cloud radiative effect errors in climate models

A Survey on Continuous Time Computations

We provide an overview of theories of continuous time computation. These theories allow us to understand both the hardness of questions related to continuous time dynamical systems and the computational power of continuous time analog models. We survey the existing models, summarizing results, and point to relevant references in the literature

Predicting Responses of Geo-ecological Carbonate Reef Systems to Climate Change: A Conceptual Model and Review

[Chapter Abstract] 230Coral reefs provide critical ecological and geomorphic (e.g. sediment production for reef-fronted shoreline maintenance) services, which interact in complex and dynamic ways. These services are under threat from climate change, requiring dynamic modelling approaches that predict how reef systems will respond to different future climate scenarios. Carbonate budgets, which estimate net reef calcium carbonate production, provide a comprehensive ‘snap-shot’ assessment of reef accretionary potential and reef stability. These budgets, however, were not intended to account for the full suite of processes that maintain coral reef services or to provide predictive capacity on longer timescales (decadal to centennial). To respond to the dual challenges of enhancing carbonate budget assessments and advancing their predictive capacity, we applied a novel model elicitation and review method to create a qualitative geo-ecological carbonate reef system model that links geomorphic, ecological and physical processes. Our approach conceptualizes relationships between net carbonate production, sediment transport and landform stability, and rates knowledge confidence to reveal major knowledge gaps and critical future research pathways. The model provides a blueprint for future coral reef research that aims to quantify net carbonate production and sediment dynamics, improving our capacity to predict responses of reefs and reef-fronted shorelines to future climate change.https://nsuworks.nova.edu/occ_facbooks/1116/thumbnail.jp

Achieving global biodiversity goals by 2050 requires urgent and integrated actions

Governments are negotiating actions intended to halt biodiversity loss and put it on a path to recovery by 2050. Here, we show that bending the curve for biodiversity is possible, but only if actions are implemented urgently and in an integrated manner. Connecting these actions to biodiversity outcomes and tracking progress remain a challenge