437 research outputs found
The Discussion Goes on: What Is the Role of Euryarchaeota in Humans?
The human body (primarily the intestinal tract, the oral cavity, and the skin) harbours approximately 1,000 different bacterial species. However, the number of archaeal species known to colonize man seems to be confined to a handful of organisms within the class Euryarchaeota (including Methanobrevibacter smithii, M. oralis, and Methanosphaera stadtmanae). In contrast to this conspicuously low diversity of Archaea in humans their unique physiology in conjunction with the growing number of reports regarding their occurrence at sites of infection has made this issue an emerging field of study. While previous review articles in recent years have addressed the putative role of particularly methanogenic archaea for human health and disease, this paper compiles novel experimental data that have been reported since then. The aim of this paper is to inspire the scientific community of “Archaea experts” for those unique archaeal organisms that have successfully participated in the human-microbe coevolution
Analyzing the Effects of the Saluda Dam on the Surface-Water Hydrology of the Congaree National Park Floodplain, South Carolina
2008 S.C. Water Resources Conference - Addressing Water Challenges Facing the State and Regio
Direct programming of confined Surface Phonon Polariton Resonators using the plasmonic Phase-Change Material InSbTe
Tailoring light-matter interaction is essential to realize nanophotonic
components. It can be achieved with surface phonon polaritons (SPhPs), an
excitation of photons coupled with phonons of polar crystals, which also occur
in 2d materials such as hexagonal boron nitride or anisotropic crystals.
Ultra-confined resonances are observed by restricting the SPhPs to cavities.
Phase-change materials (PCMs) enable non-volatile programming of these cavities
based on a change in the refractive index. Recently, the new plasmonic PCM
InSbTe (IST) was introduced which can be reversibly switched from an
amorphous dielectric state to a crystalline metallic one in the entire infrared
to realize numerous nanoantenna geometries. However, reconfiguring SPhP
resonators to modify the confined polaritons modes remains elusive. Here, we
demonstrate direct programming of confined SPhP resonators by phase-switching
IST on top of a polar silicon carbide crystal and investigate the strongly
confined resonance modes with scanning near-field optical microscopy.
Reconfiguring the size of the resonators themselves result in enhanced mode
confinements up to a value of . Finally, unconventional cavity
shapes with complex field patterns are explored as well. This study is a first
step towards rapid prototyping of reconfigurable SPhP resonators that can be
easily transferred to hyperbolic and anisotropic 2d materials.Comment: Main Manuscript 16 pages, 5 figures, SI 15 page
A Product Formula for the Normalized Volume of Free Sums of Lattice Polytopes
The free sum is a basic geometric operation among convex polytopes. This note
focuses on the relationship between the normalized volume of the free sum and
that of the summands. In particular, we show that the normalized volume of the
free sum of full dimensional polytopes is precisely the product of the
normalized volumes of the summands.Comment: Published in the proceedings of 2017 Southern Regional Algebra
Conferenc
Разработка Генеральной схемы санитарной очистки территории Тегульдетского района Томской области
Выпускная квалификационная работа объемом 86 страницы, содержит 6 рисунков, 15 таблиц, 34 источника.Final qualification work with a volume of 86 pages, includes 6 figures, 15 tables, 34 source
Liquid Tissue: Proteomic Profiling of Formalin-Fixed Tissues
Identification and quantitation of candidate biomarker proteins in large numbers of individual tissues is required to validate specific proteins, or panels of proteins, for clinical use as diagnostic, prognostic, toxicological, or therapeutic markers. Mass spectrometry (MS) provides an exciting analytical methodology for this purpose. Liquid Tissue MS protein preparation allows researchers to utilize the vast, already existing, collections offormalin-fixed paraffin-embedded (FFPE) tissues for the procurement of peptides and the analysis across a variety of MS platforms
I Lie? We Lie! Why? Experimental Evidence on a Dishonesty Shift in Groups
Unethical behavior such as dishonesty, cheating and corruption occurs fre-quently in organizations or groups. Recent experimental evidence suggests that there isa stronger inclination to behave immorally in groups than individually. We ask if this isthe case, and if so, why. Using a parsimonious laboratory setup, we study how individualbehavior changes when deciding as a group member. We observe a strong dishonestyshift. This shift is mainly driven by communication within groups and turns out to be inde-pendent of whether group members face payoff commonality or not (i.e., whether othergroup members benefit from one’s lie). Group members come up with and exchange morearguments for being dishonest than for complying with the norm of honesty. Thereby,group membership shifts the perception of the validity of the honesty norm and of itsdistribution in the population
Recommended from our members
Quantitative plant proteomics using hydroponic isotope labeling of entire plants (HILEP)
Ovine pedomics : the first study of the ovine foot 16S rRNA-based microbiome
We report the first study of the bacterial microbiome of ovine interdigital skin based on 16S rRNA by pyrosequencing and conventional cloning with Sanger-sequencing. Three flocks were selected, one a flock with no signs of footrot or interdigital dermatitis, a second flock with interdigital dermatitis alone and a third flock with both interdigital dermatitis and footrot. The sheep were classified as having either healthy interdigital skin (H), interdigital dermatitis (ID) or virulent footrot (VFR). The ovine interdigital skin bacterial community varied significantly by flock and clinical condition. The diversity and richness of operational taxonomic units was greater in tissue from sheep with ID than H or VFR affected sheep. Actinobacteria, Bacteriodetes, Firmicutes and Proteobacteria were the most abundant phyla comprising 25 genera. Peptostreptococcus, Corynebacterium and Staphylococcus were associated with H, ID and VFR respectively. Sequences of Dichelobacter nodosus, the causal agent of ovine footrot, were not amplified due to mismatches in the 16S rRNA universal forward primer (27F). A specific real time PCR assay was used to demonstrate the presence of D. nodosus which was detected in all samples including the flock with no signs of ID or VFR. Sheep with ID had significantly higher numbers of D. nodosus (104-109 cells/g tissue) than those with H or VFR feet
- …