400 research outputs found
Interview with Violet Mai
An interview with Violet Mai regarding her experiences in a one-room school house.https://scholars.fhsu.edu/ors/1192/thumbnail.jp
Complex and flexible catabolism in Aromatoleum aromaticum pCyN1
Large quantities of organic matter are continuously deposited, and (a)biotic gradients intersect in the soil-rhizosphere, where biodegradation contributes to the global cycles of elements. The betaproteobacterial genus Aromatoleum comprises cosmopolitan, facultative denitrifying degradation specialists. Aromatoleum aromaticum. pCyN1 stands out for anaerobically decomposing plant-derived monoterpenes in addition to monoaromatic hydrocarbons, polar aromatics and aliphatics. The catabolic network's structure and flexibility in A. aromaticum pCyN1 were studied across 34 growth conditions by superimposing proteome profiles onto the manually annotated 4.37 Mbp genome. Strain pCyN1 employs three fundamentally different enzymes for C-H-bond cleavage at the methyl groups of p-cymene/4-ethyltoluene, toluene and p-cresol respectively. Regulation of degradation modules displayed substrate specificities ranging from narrow (toluene and cyclohexane carboxylate) via medium-wide (one module shared by p-cymene, 4-ethyltoluene, alpha-phellandrene, alpha-terpinene, gamma-terpinene and limonene) to broad (central benzoyl-CoA pathway serving 16 aromatic substrates). Remarkably, three variants of ATP-dependent (class I) benzoyl-CoA reductase and four different beta-oxidation routes establish a degradation hub that accommodates the substrate diversity. The respiratory system displayed several conspicuous profiles, e.g. the presence of nitrous oxide reductase under oxic and of low-affinity oxidase under anoxic conditions. Overall, nutritional versatility in conjunction with network regulation endow A. aromaticum pCyN1 with broad adaptability
The Elite and Popular Foundations of German Catholicism in the Age of Confessionalism: The Reichskirche.
The political, institutional, and religious particularism of the German church reinforced the loyalty of the population, to local religious traditions. This gave German Catholicism a local emphasis and hindered the imposition of reformed Catholicism, which sought to homogenize, centralize, and internationalize the church. While early modern German Catholicism was certainly conservative, it was not rigidly traditional. Religious change occurred in these centuries and it came out of the interaction between the local population, local institutions like the chapters and monasteries, the parish clergy, and reforming churchmen.[70] The role of chapters and monasteries was not insignificant in this process. Canons and monks, whose daily lives were taken up with religious practices that owed much more to medieval Christian traditions than to the reforms of the Council of Trent, undoubtedly sympathized with and participated in the religion of the people. In the context of the Holy Roman Empire, manyGerman church institutions fought to preserve their own particular privileges and traditions, which gave them little inclination to destroy the local religion of their subjects. Localism and particularism thus became a valued hallmark of German Catholicism, as much among the Catholic elite as among the people. [ABSTRACT FROM AUTHOR
Oscillations and interactions of dark and dark-bright solitons in Bose-Einstein condensates
Solitons are among the most distinguishing fundamental excitations in a wide
range of non-linear systems such as water in narrow channels, high speed
optical communication, molecular biology and astrophysics. Stabilized by a
balance between spreading and focusing, solitons are wavepackets, which share
some exceptional generic features like form-stability and particle-like
properties. Ultra-cold quantum gases represent very pure and well-controlled
non-linear systems, therefore offering unique possibilities to study soliton
dynamics. Here we report on the first observation of long-lived dark and
dark-bright solitons with lifetimes of up to several seconds as well as their
dynamics in highly stable optically trapped Rb Bose-Einstein
condensates. In particular, our detailed studies of dark and dark-bright
soliton oscillations reveal the particle-like nature of these collective
excitations for the first time. In addition, we discuss the collision between
these two types of solitary excitations in Bose-Einstein condensates.Comment: 9 pages, 4 figure
TRIGA-SPEC: A setup for mass spectrometry and laser spectroscopy at the research reactor TRIGA Mainz
The research reactor TRIGA Mainz is an ideal facility to provide neutron-rich
nuclides with production rates sufficiently large for mass spectrometric and
laser spectroscopic studies. Within the TRIGA-SPEC project, a Penning trap as
well as a beam line for collinear laser spectroscopy are being installed.
Several new developments will ensure high sensitivity of the trap setup
enabling mass measurements even on a single ion. Besides neutron-rich fission
products produced in the reactor, also heavy nuclides such as 235-U or 252-Cf
can be investigated for the first time with an off-line ion source. The data
provided by the mass measurements will be of interest for astrophysical
calculations on the rapid neutron-capture process as well as for tests of mass
models in the heavy-mass region. The laser spectroscopic measurements will
yield model-independent information on nuclear ground-state properties such as
nuclear moments and charge radii of neutron-rich nuclei of refractory elements
far from stability. This publication describes the experimental setup as well
as its present status.Comment: 20 pages, 17 figure
Lagrangian Neural Style Transfer for Fluids
Artistically controlling the shape, motion and appearance of fluid
simulations pose major challenges in visual effects production. In this paper,
we present a neural style transfer approach from images to 3D fluids formulated
in a Lagrangian viewpoint. Using particles for style transfer has unique
benefits compared to grid-based techniques. Attributes are stored on the
particles and hence are trivially transported by the particle motion. This
intrinsically ensures temporal consistency of the optimized stylized structure
and notably improves the resulting quality. Simultaneously, the expensive,
recursive alignment of stylization velocity fields of grid approaches is
unnecessary, reducing the computation time to less than an hour and rendering
neural flow stylization practical in production settings. Moreover, the
Lagrangian representation improves artistic control as it allows for
multi-fluid stylization and consistent color transfer from images, and the
generality of the method enables stylization of smoke and liquids likewise.Comment: ACM Transaction on Graphics (SIGGRAPH 2020), additional materials:
http://www.byungsoo.me/project/lnst/index.htm
Observational evidence for gravitationally trapped massive axion(-like) particles
Unexpected astrophysical observations can be explained by gravitationally
captured massive particles, which are produced inside the Sun or other Stars
and are accumulated over cosmic times. Their radiative decay in solar outer
space would give rise to a `self-irradiation' of the whole star, providing the
time-independent component of the corona heating source. In analogy with the
Sun-irradiated Earth atmosphere, the temperature and density gradient in the
corona - chromosphere transition region is suggestive for an omnipresent
irradiation of the Sun. The same scenario fits other astrophysical X-ray
observations. The radiative decay of a population of such elusive particles
mimics a hot gas. X-ray observatories, with an unrivalled sensitivity below ~10
keV, can search for such particles. The elongation angle relative to the Sun is
the relevant new parameter.Comment: 35 pages, LaTeX, 9 figures. Accepted by Astroparticle Physic
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