Turbulent transport of impurities and their effect on energy confinement

By presenting linear and nonlinear gyrokinetic studies, based on a balanced neutral beam injection deuterium discharge from the DIII-D tokamak, we demonstrate that impurities alter the scaling of the transport on the charge and mass of the main species, and even more importantly, they can dramatically change the energy transport even in relatively small quantities. A poloidally varying equilibrium electrostatic potential can lead to a strong reduction or sign change of the impurity peaking factor due to the combined effect of the in-out impurity density asymmetry and the EXB drift of impurities. We present an approximate expression for the impurity peaking factor and demonstrate that impurity peaking is not significantly affected by impurity self-collisions.Comment: Accepted for publication in Plasma Physics and Controlled Fusio

The Adelaide VHF radar: Capabilities and future plans

The VHF radar at Buckland Park, South Australia commenced operation in January, 1984. The radar is located adjacent to the 2-MHz ionospheric radar. The routine method for measuring horizontal wind velocity is the space antenna technique (SA) while the Doppler technique is used to measure vertical velocities. It is possible to swing the transmitting beam in the east-west plane, allowing Doppler measurements of the EW wind component

The Standards for Water Quality Testing: Protecting the Public from Another Flint Water Crisis

Graduate Textual or Investigativ

How can healthcare workers adapt non-pharmacological treatment – whilst maintaining safety – when treating people with COVID-19 and delirium?

Delirium may be part of the spectrum of COVID-19 symptoms that patients present with. In some cases, the delirium may be severe and have a rapid onset. Clinicians should have a high level of suspicion of COVID-19 when considering a possible cause of the delirium. Non-pharmacological interventions (See Box 1) are the mainstay for the management of delirium in all settings; there is consistent evidence of benefit in the prevention of delirium Communication and care are compromised by the need for Personal Protection Equipment (PPE) in COVID-19 Use of remote consultations may be necessary and is often feasible (See Box 2

Weaving Indigenous and Western Science Knowledges Through a Land-Based Field Course at Bkejwanong Territory (Laurentian Great Lakes)

In response to a growing interest in building Indigenous-led educational experiences, we codeveloped a land-based field course that wove Indigenous ways of knowing together with Western ecological concepts. The spirit of the course was the one rooted in varied ways of knowing nature, on the land, the water, and the culture—to see the Great Lakes from an Anishinaabe perspective. Situated in the heart of the Laurentian Great Lakes Basin at Bkejwanong Territory (Walpole Island First Nation), in the Traditional Territory of the Three Fires Confederacy of First Nations (Ojibwe, Odawa, and Potawatomi) on Turtle Island (North America), this inaugural undergraduate university course was led by an Indigenous instructor with contributions from non-Indigenous science faculty from the university and local community knowledge keepers. Here, we describe our journey in cocreating land-based teaching modules with Indigenous scholars and scholars at the University of Windsor, Ontario, Canada. We focused on experiences that exposed students to traditional ways of knowing nature, and reflections were used as the main teaching pedagogy. The course offered daily perspectives and activities across land and water and examined dimensions of biodiversity as sacred beings and medicine. Outcomes and indicators of success were driven by the individual’s reflection and evaluation on their own growth, as expressed through a final project aimed at bridging knowledges, supporting community initiatives or both. This case is designed to offer an example that has potential for application to many other contexts where community-faculty partnerships and land-based learning opportunities are availabl

Functional interplay between NTP leaving group and base pair recognition during RNA polymerase II nucleotide incorporation revealed by methylene substitution.

RNA polymerase II (pol II) utilizes a complex interaction network to select and incorporate correct nucleoside triphosphate (NTP) substrates with high efficiency and fidelity. Our previous 'synthetic nucleic acid substitution' strategy has been successfully applied in dissecting the function of nucleic acid moieties in pol II transcription. However, how the triphosphate moiety of substrate influences the rate of P-O bond cleavage and formation during nucleotide incorporation is still unclear. Here, by employing β,γ-bridging atom-'substituted' NTPs, we elucidate how the methylene substitution in the pyrophosphate leaving group affects cognate and non-cognate nucleotide incorporation. Intriguingly, the effect of the β,γ-methylene substitution on the non-cognate UTP/dT scaffold (∼3-fold decrease in kpol) is significantly different from that of the cognate ATP/dT scaffold (∼130-fold decrease in kpol). Removal of the wobble hydrogen bonds in U:dT recovers a strong response to methylene substitution of UTP. Our kinetic and modeling studies are consistent with a unique altered transition state for bond formation and cleavage for UTP/dT incorporation compared with ATP/dT incorporation. Collectively, our data reveals the functional interplay between NTP triphosphate moiety and base pair hydrogen bonding recognition during nucleotide incorporation

Asymptotic stability of small gap solitons in nonlinear Dirac equations

This is the published version, also available here: http://dx.doi.org/10.1063/1.4731477.We prove dispersive decay estimates for the one-dimensional Dirac operator and use them to prove asymptotic stability of small gap solitons in the nonlinear Dirac equations with quintic and higher-order nonlinear terms

Panel: Individual and/versus social creativity

The creative act is often thought of as an individual, even lonely, one: the inspiration in the bath, the artist isolated in the garret. The research student has to demonstrate that they found new knowledge and that it was “all their own work”. But how often are these individual acts a realistic model of the creative process? Even if inspiration does come in the bath, how many conversations had taken place before that moment? How much time has the “lonely” artist spent in cafes arguing with other artists about their work? If individual research is so important why do we advise a good student to join a successful research department

ANALISIS KEUNTUNGAN USAHA TERNAK BABI DI KECAMATAN TOMOHON BARAT KOTA TOMOHON (Studi Kasus Pada Usaha Milik Bapak Okny Mende)

PROFIT ANALYSIS OF PIG FARMING IN WEST TOMOHON DISTRICT TOMOHON CITY. (Case Study On Mr. Okny Mende's Business. The goal of this study was to investigate profit  of pig farming  in West Tomohon  District Survey method was performed on Mr Okny Mende’s farming  in Tara Tara 2 Village West Tomohon District bycase study. The pig farmers’ challenge in the production process was the high cost of production. The increase of cost  production without profit tend to be problem for farmers because input material (production costs) was very important factors in the livestock business. The Pig farming business has the potential for development in the City of Tomohon due to investment in this business does not require large costs and land, besides that the return on capital is relatively faster and although the development of pig agribusiness is limited due to socio-cultural factors, but in North Sulawesi especially Tomohon City has good prospects because of high demand of local market and the surrounding area, and there are no socio-cultural constraints. The pig farm business located in Taratara Dua Sub-District, West Tomohon District is owned by Mr. Okny Mende's family, which is a nursery business by selling weaned piglets. Results of this study  shown that the average total cost incurred per period of production  as much as IDR  38.334.531. While revenue per period of production was IDR. 68.400.000. The profit per production period was IDR. 30.065.469