Physical characteristics of Acidic Mining Lake 111

Measurements of physical properties have been conducted in Mining Lake 111 (ML111), located in Lusatia, Germany over the time period 1996- 2002. In the deepest area of the ML111, a monimolimnion was observed, that persisted for the years 1996-1999. It disappeared in 2000 and again formed in 2001. The definition of the main physical properties, such as the temperature compensation for electrical conductivity, in acidic mining lakes required a lake specific approach. The relation between conductivity, temperature and density was determined for the acidic ML111. The variation in dissolved substances affected these relationships such that conductivity varied with temperature even in different layers of the water column and the limitations for a lake wide correlation was evident. Variation in the conductivity of the epilimnion could be verified, and agreed with the estimates of evaporation from the lake surface during summer stratification. Calculations, following the gradient flux method, indicated vertical transport coefficients between 10-7 and 10-6m2/s throughout the hypolimnion. The heat budget indicated that heat was transferred into the lake bed or the ground during spring

Using Cases about Teaching for Faculty Development

Creating and Collecting Cases Setting Up Case-Based Workshops Facilitating Case Discussions Setting Clear Expectations Managing Time Asking and Encouraging Questions Listening Organizing and Structuring Avoiding Common Problems Conclusion References Other Resource

A Sport for Gentle Bloods

Le présent article envisage à nouveaux frais les liens entre le traité sur la chasse de George Gascoigne, The Noble Arte of Venerie (1575) et Comme il vous plaira (1598) de Shakespeare. Contrairement à l’idée selon laquelle ces œuvres préfigurent la sensibilité moderne aux droits des animaux, il s’agit de les comprendre à l’aune de relation inter-espèces plus anciennes et moins souples. Cette perspective plus datée, conformément à la doctrine du péché originel, voit l’humanité déchue naturellement encline à la prédation et au conflit et inapte par constitution aux pratiques pacifiques. Aussi les sentiments anti-cynégétiques attribués au Duc aîné dans Comme il vous plaira invoquent-ils un idéal d’harmonie édénique semblable aux mises en scène des divertissements royaux composés par Gascoigne et d’autres pour la reine Élisabeth (dont il a été démontré qu’ils représentaient une source majeure de la langue de la comédie shakespearienne). À l’inverse, Jaques assimile les mêmes sentiments anti-cynégétiques au registre de la satire, marquant ainsi leur éloignement de la réalité. Dans la pièce, l’ensemble des réponses opposées au réel (l’utopie et la satire, l’idéalisation et l’accusation) trouvent à s’exprimer dans le double spectacle final, le masque pour le mariage de Rosalinde et la procession charivaresque de Jaques, les deux étant réunis en une sorte de discordia concors. Dans cette harmonie de contrastes, l’utopie comme la satire rejettent la possibilité d’un comportement idéal dans l’ici et maintenant. Le traité de Gascoigne, de la même façon, repousse à la marge ses sentiments anti-cynégétiques en les présentant sous forme d’exercices versifiés, liminaires et cosmétiques, soit plutôt rhétoriques que réels. Reléguant la sympathie inter-espèces au domaine de l’inaccessible et du prélapsaire, Gascoigne et Shakespeare tranchent dans le sens d’une vision du monde d’après la chute qui serait éthiquement et écologiquement irréparable. Peut-être ne faut-il pas voir comme une coïncidence le fait que ce monde préfigure l’environnement qui caractérise des pièces plus tardives telles que Le Roi Lear ou Macbeth.This paper revisits the relationship between George Gascoigne’s Noble Arte of Venerie (1575) and Shakespeare’s As You Like It (1598). In the process it argues against the currently popular tendency to read these works as augurs of the modern animal-rights sensibility, preferring to understand them instead as expressions of an older and less accommodating sense of inter-species relations. This older view, consistent with the doctrine of original sin, understands fallen humanity as given by nature to predation and strife, constitutionally unsuited to the practice of peace. Thus Duke Senior’s anti-hunting sentiments in As You Like It invoke an ideal of paradisal harmony like that staged in the courtly entertainments composed by Gascoigne and others for Queen Elizabeth—these being, it has been argued, a major source for the language of Shakespeare’s play. By contrast, Jaques assimilates the same anti-hunting sentiments to the register of satire, marking in the process their distance from reality. Within As You Like It, these responses to the real—the utopian and the satirical, the idealizing and the accusatory—find expression in twin concluding spectacles: Rosalind’s wedding-masque and Jaques’ charivari-procession, the two uniting in a kind of discordia concors. In their contrasting harmony, utopia and satire alike reject the possibility of ideal behavior in the here and now; likewise, Gascoigne’s Noble Arte marginalizes its anti-hunting sentiments by casting them in the form of verse exercises, liminal and cosmetic, rhetorical rather than actual. By together placing inter-species sympathy in the realm of the unattainable and prelapsarian, Gascoigne and Shakespeare commit themselves to a vision of the fallen world as both ethically and ecologically unredeemable. Perhaps not by coincidence, this world anticipates the environment in which later Shakespearean plays like King Lear and Macbeth unfold

Airborne Visible/Infrared Imaging spectrometer AVIS: Design, characterization and calibration

The Airborne Visible/Infrared imaging Spectrometer AVIS is a hyperspectral imager designed for environmental monitoring purposes. The sensor, which was constructed entirely from commercially available components, has been successfully deployed during several experiments between 1999 and 2007. We describe the instrument design and present the results of laboratory characterization and calibration of the system's second generation, AVIS-2, which is currently being operated. The processing of the data is described and examples of remote sensing reflectance data are presented

Carvedilol inhibits the cardiostimulant and thermogenic effects of MDMA in humans : lost in translation

We greatly appreciate the comments offered by Drs Rolle, Takematsu, and Hoffman and the opportunity to put our work into a wider perspective. We share the view that our work does not reflect the clinical situation but rather provides a proof of mechanism study, which aims to help to translate preclinical findings (Sprague et al., 2005) into the clinic. As we noted in the discussion of our work (Hysek et al., 2012b) the primary goal of the study was to investigate the role of adrenoceptors in the mechanism of action of MDMA in humans. Therefore, the study provided only indirect support for the use of carvedilol in the treatment of stimulant toxicity in which carvedilol would be administered following the ingestion of Ecstasy or other stimulants. Furthermore, we noted the limitation that the MDMA-induced increase in body temperature in our study was moderate and we do not know whether carvedilol would also be effective in cases of severe hyperthermia following ecstasy use

In-Orbit Demonstration of an In-Space Manufactured Selfie Stick forSmallSats

The poster presents a demonstration mission of an in-space manufacturing technology to extrude tube-shaped photopolymer boom structures for satellites. On the end of the boom a camera will be mounted to simulate a payload and to observe the manufacturing process. The boom is manufactured in a continuous motion and therefore higher manufacturing speeds are archivable than by comparable additive manufacturing methods. The photopolymer curing mechanism makes the process energy- and packaging efficient which enables in-space manufacturing also for small satellites. In-space manufacturing will be one of the key technologies for the future space economy. Large and lightweight structures can be manufactured on demand, to safe volume and costs at launch. Compared to deployable structures, which are commonly used on spacecraft, in-space manufacturing enables a large scalability and low development costs. The demonstrator will be mounted on the upper stage of the HyImpulse SL1 rocket which is scheduled to launch in the fourth quarter of 2025

Baroclinic, Kelvin and inertia-gravity waves in the barostrat instability experiment

International audienceThe differentially heated rotating annulus is a laboratory experiment historically designed for modelling large-scale features of the mid-latitude atmosphere. In the present study, we investigate a modified version of the classic baroclinic experiment in which a juxtaposition of convective and motionless stratified layers is created by introducing a vertical salt stratification. The thermal convective motions are suppressed in a central region at mid-depth of the rotating tank, therefore double-diffusive convection rolls can develop only in thin layers located at top and bottom, where the salt stratification is weakest. For high enough rotation rates, the baroclinic instability destabilises the flow in the top and the bottom shallow convective layers, generating cyclonic and anticyclonic eddies separated by the stable stratified layer. Thanks to this alternation of layers resembling the convective and radiative layers of stars, the planetary's atmospheric troposphere and stratosphere or turbulent layers at the sea surface above stratified waters, this new laboratory setup is of interest for both astrophysics and geophysical sciences. More specifically, it allows to study the exchange of momentum and energy between the layers, primarly by the propagation of internal gravity waves (IGW). PIV velocity maps are used to describe the wavy flow pattern at different heights. Using a co-rotating laser and camera, the wave field is well resolved and different wave types can be found: baroclinic waves, Kelvin, and Poincaré type waves. The signature of small-scale IGW can also be observed attached to the baroclinic jet. The baroclinic waves occur at the thin convectively active layer at the surface and the bottom of the tank, though decoupled they show different manifestation of nonlinear interactions. The inertial Kelvin and Poincaré waves seem to be mechanically forced. The small-scale wave trains attached to the meandering jet point to an imbalance of the large-scale flow. For the first time, the simultaneous occurrence of differentwave types is reported in detail for a differentially heated rotating annulus experiment