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Search Results: 1 - 10 of 219660 matches for " C. Sailer "
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Multiple Benefits Derived from a Peer Teacher Program in Two Undergraduate Microbiology Lab Courses
Frances C. Sailer,Roger W. Melvold,Charles C. Hosford
Journal of Microbiology & Biology Education , 2010, DOI: 10.1128/jmbe.v11i2.190
Abstract: A peer teaching program was implemented to alleviate the problem of a limited number of lab instructors attempting to teach large numbers of students in two different undergraduate microbiology lab courses. The benefit of having peer teachers was immediately obvious to the lab instructors, faculty and staff who were responsible for conducting the labs, but it was soon evident that there were also benefits for everyone else involved in the program. The students enrolled in the labs reported that having peer teachers in the lab enhanced their learning, and they felt comfortable receiving help from a peer teacher who had recently completed the course. The peer teachers discovered that they gained valuable experience and confidence while teaching other students, and they appreciated the chance to gain hands-on experience. The lab instructors received the qualified help they needed in order to give more individual attention to the large numbers of students in the labs. The feedback from this program has been positive from everyone involved.
Low temperature light yield measurements in NaI and NaI(Tl)
C. Sailer,B. Lubsandorzhiev,C. Strandhagen,J. Jochum
Physics , 2012, DOI: 10.1140/epjc/s10052-012-2061-7
Abstract: The scintillation light output of a pure and a Thallium doped Sodium Iodide (NaI) crystal under irradiation with 5.486MeV \alpha -particles has been measured over a temperature range from 1.7K to 300K. Estimates of the decay time constant at three selected temperatures are given. For pure NaI an increase in light yield towards low temperatures could be confirmed and measured at higher precision. For NaI(Tl) below 60K an increase in light output has been found.
Peter Oestmann, Rechtsvielfalt vor Gericht. Rechtsanwendung und Partikularrecht im Alten Reich
Rita Sailer
Forum Historiae Iuris , 2004,
Abstract:
Untertanenprozesse
Sailer, Rita
Zeitenblicke , 2004,
Abstract:
Phase structure of $SU(2)$ Yang-Mills theory with global center symmetry
K. Sailer
Physics , 1994,
Abstract: Retaining only the `timelike' component $A_0$ of the vector potential a skelet model with explicit global center symmetry is constructed for $SU(2)$ Yang-Mills theory. It is shown that the $A_0$ gluon vacuum is equivalent with the 4-dimensional Coulomb-gas. In 1--loop approximation, the effective theory of the skelet model exhibits non-local self-interaction. A coupling constant $\lambda$ is found that governs the loop expansion. For $\lambda < 1$ the effective theory does not confine (the string tension vanishes), whereas for $\lambda = 1$ confinement (with non-vanishing string tension) takes place. In the deconfined phase the $A_0$ gluons exhibit non-zero rest mass and global center symmetry is broken by the vacuum state. Confinement sets on for $\lambda =1$ when the rest mass of $A_0$ gluons vanishes and the global center symmetry of the vacuum is restored.
Simulation of Beam-Beam Background at CLIC
André Sailer
Physics , 2010,
Abstract: The dense beams used at CLIC to achieve a high luminosity will cause a large amount of background particles through beam-beam interactions. Generator level studies with GuineaPig and full detector simulation studies with an ILD based CLIC detector have been performed to evaluate the amount of beam-beam background hitting the vertex detector.
Avalanche risk assessment – a multi-temporal approach, results from Galtür, Austria
M. Keiler, R. Sailer, P. J rg, C. Weber, S. Fuchs, A. Zischg,S. Sauermoser
Natural Hazards and Earth System Sciences (NHESS) & Discussions (NHESSD) , 2006,
Abstract: Snow avalanches pose a threat to settlements and infrastructure in alpine environments. Due to the catastrophic events in recent years, the public is more aware of this phenomenon. Alpine settlements have always been confronted with natural hazards, but changes in land use and in dealing with avalanche hazards lead to an altering perception of this threat. In this study, a multi-temporal risk assessment is presented for three avalanche tracks in the municipality of Galtür, Austria. Changes in avalanche risk as well as changes in the risk-influencing factors (process behaviour, values at risk (buildings) and vulnerability) between 1950 and 2000 are quantified. An additional focus is put on the interconnection between these factors and their influence on the resulting risk. The avalanche processes were calculated using different simulation models (SAMOS as well as ELBA+). For each avalanche track, different scenarios were calculated according to the development of mitigation measures. The focus of the study was on a multi-temporal risk assessment; consequently the used models could be replaced with other snow avalanche models providing the same functionalities. The monetary values of buildings were estimated using the volume of the buildings and average prices per cubic meter. The changing size of the buildings over time was inferred from construction plans. The vulnerability of the buildings is understood as a degree of loss to a given element within the area affected by natural hazards. A vulnerability function for different construction types of buildings that depends on avalanche pressure was used to assess the degree of loss. No general risk trend could be determined for the studied avalanche tracks. Due to the high complexity of the variations in risk, small changes of one of several influencing factors can cause considerable differences in the resulting risk. This multi-temporal approach leads to better understanding of the today's risk by identifying the main changes and the underlying processes. Furthermore, this knowledge can be implemented in strategies for sustainable development in Alpine settlements.
rac-2-[(2-Chlorophenyl)(4-chlorophenyl)methyl]-1,3-dioxolane
Daniela F. Maluf,Sailer S. dos Santos,Claudia C. Gatto,Brás H. de Oliveira
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812023781
Abstract: The title compound, C16H14Cl2O2, is a chiral mitotane derivative that contains a dioxolane ring and crystallizes from methanol as a racemic mixture. It was obtained in high yield from mitotane and ethyleneglycol in alkaline medium, followed by neutralization with sulfuric acid and extraction with ethyl acetate. The molecular structure is stabilized by an intramolecular C— H... O hydrogen bond. The dihedral angle between the aromatic rings is 80.1 (2)°. The dioxolane ring adopts a puckered envelope conformation with an O atom as the flap.
Biochar & Carbon Sequestration [Biocarv o (Biochar) e Sequestro de Carbono]
Edivaltrys I. P. Rezende,Lilian C. Angelo,Sailer S. dos Santos,Antonio S. Mangrich
Revista Virtual de Química , 2011,
Abstract: The traditional answer to the question of controlling the growth of global warming involves reducing emissions of greenhouse gases like CO2. However, developed and developing countries have difficulty in adopting measures to reduce use of fossil fuels in the short or medium term. The world is currently exceeding the rate of greenhouse gas emissions. Consequently, it is urgently necessary to remove carbon dioxide from the atmosphere. Extensive research efforts in science and technology are underway to develop approaches to capture and sequester carbon. In this work we deal with the different processes proposed, but with great emphasis on the process of biochar production by pyrolysis of biomass which copies the methodology of Terra Preta de índios da Amazonia.
Molecular wave packet dynamics decelerated by solvent environment: A theoretical approach
Thallmair S.,Kowalewski M.,Fingerhut B.P.,Sailer C.F.
EPJ Web of Conferences , 2013, DOI: 10.1051/epjconf/20134105043
Abstract: We present a new dynamic continuum ansatz to describe the frictional force exerted on moving wave packets in a solvent cage. The solvent interferes on the femtosecond time scale, but decides the reaction outcome.
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