cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Experimental microbial alteration and Fe mobilization from basaltic rocks of the ICDP HSDP2 drill core, Hilo, Hawaii
Creators: name: Stranghoener, Marius
name: Schippers, Axel
name: Dultz, Stefan
name: Behrens, Harald
Publisher: name: Lausanne : Frontiers Media S.A.
Year: 2018
Subjects: subject: Bio-mediated alteration
subject: Biofilm
subject: Burkholderia
subject: Fe mobilization
subject: Fe redox state
subject: ICDP
subject: Microbe-basalt interaction
subject: Volcanic islands
subject: glass
subject: abiotic stress
subject: Article
subject: bacterial growth
subject: biotic stress
subject: chemical analysis
subject: glucose intake
subject: Gram negative bacterium
subject: Hawaii
subject: incubation time
subject: microbial activity
subject: microbial colonization
subject: microbial growth
subject: organismal interaction
subject: pH
subject: scanning electron microscopy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: The interaction of a single bacterial species (Burkholderia fungorum) with basaltic rocks from the ICDP HSDP2 drill core and synthetic basaltic glasses was investigated in batch laboratory experiments to better understand the role of microbial activity on rock alteration and Fe mobilization. Incubation experiments were performed with drill core basaltic rock samples to investigate differences in the solution chemistry during biotic and abiotic alteration. Additionally, colonization experiments with synthetic basaltic glasses of different Fe redox states and residual stresses were performed to evaluate their influence on microbial activity and surface attachment of cells. In biotic incubation experiments bacterial growth was observed and the release of Fe and other major elements from drill core basaltic rocks to solution exceeded that of abiotic controls only when the rock sample assay was nutrient depleted. The concentration of dissolved major elements in solution in biotic colonization experiments with synthetic basaltic glasses increased with increasing residual stress and Fe(II) content. Furthermore, the concentration of dissolved Fe and Al increased similarly in biotic colonization experiments indicating that their dissolution might be triggered by microbial activity. Surface morphology imaging by SEM revealed that cells on basaltic rocks in incubation experiments were most abundant on the glass and surfaces with high roughness and almost absent on minerals. In colonization experiments, basaltic glasses with residual stress and high Fe(II) content were intensely covered with a cellular biofilm. In contrast, glasses with high Fe(III) content and no residual stress were sparsely colonized. We therefore conclude that structurally bound Fe is most probably used by B. fungorum as a nutrient. Furthermore, we assume that microbial activity overall increased rock dissolution as soon as the environment becomes nutrient depleted. Our results show that besides compositional effects, other factors such as redox state and residual stress can control microbial alteration of basaltic glasses.
Dual-Polarized Ricean MIMO Channels: Modeling and Performance Assessment
Creators: name: Ispas, Adrian
name: Gong, Xitao
name: Schneider, Christian
name: Ascheid, Gerd
name: Thomä, Reiner
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In wireless communication systems, dual-polarized (DP) instead of single-polarized (SP) multiple-input multiple-output (MIMO) transmission is used to improve the spectral efficiency under certain conditions on the channel and the signal-to-noise ratio (SNR). In order to identify these conditions, we first propose a novel channel model for DP mobile Ricean MIMO channels for which statistical channel parameters are readily obtained from a moment-based channel decomposition. Second, we derive an approximation of the mutual information (MI), which can be expressed as a function of those statistical channel parameters. Based on this approximation, we characterize the required SNR for a DP MIMO system to outperform an SP MIMO system in terms of the MI. Finally, we apply our results to channel measurements at 2.53 GHz. We find that, using the proposed channel decomposition and the approximation of the MI, we are able to reproduce the (practically relevant) SNR values above which DP MIMO systems outperform SP MIMO systems.
description: submitted to the IEEE Transactions on Communications
Complexity of multidimensional hydrogenic systems
Creators: name: Dehesa, Jesus S.
name: López-Rosa, Sheila
name: Sánchez-Moreno, Pablo
name: Yáñez, Rafael J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 94A17, 62B10, 33C45, 33C55

description: The Cramér-Rao, Fisher-Shannon and LMC shape complexity measures have been recently shown to play a relevant role to study the internal disorder of finite many-body systems (e.g., atoms, molecules, nuclei). They highlight amongst the bunch of complexities appeared in the literature by their mathematical simplicity and transparent physical interpretation. They are composed by two spreading measures (variance, Fisher information and Shannon entropies) of the single-particle probability density of the systems. Here we discuss the physico-mathematical knowledge of these two-component complexities for hydrogenic systems with standard ($D = 3$) and non-standard dimensionalities. These systems include not only the hydrogen atom and its isoelectronic series but also a large diversity of quantum systems such as, e.g. exotic atoms, antimatter atoms, some qubits systems and Rydberg atoms, ions and molecules.
description: 13 pages, 1 figure
Flow rate dependent continuous hydrolysis of protein isolates
Creators: name: Sewczyk, Tim
name: Hoog Antink, Marieke
name: Maas, Michael
name: Kroll, Stephen
name: Beutel, Sascha
Publisher: name: Heidelberg : Springer Verlag
Year: 2018
Subjects: subject: Bioactive peptides
subject: Continuous process
subject: Food protein
subject: Immobilization
subject: Proteases
subject: chymotrypsin A
subject: protein hydrolysate
subject: subtilisin
subject: trypsin
subject: Article
subject: batch process
subject: continuous process
subject: enzyme activity
subject: flow rate
subject: high performance liquid chromatography
subject: human
subject: immobilization
subject: peptide synthesis
subject: polyacrylamide gel electrophoresis
subject: protein degradation
subject: protein expression
subject: protein hydrolysis
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Food protein hydrolysates are often produced in unspecific industrial batch processes. The hydrolysates composition underlies process-related fluctuations and therefore the obtained peptide fingerprint and bioactive properties may vary. To overcome this obstacle and enable the production of specific hydrolysates with selected peptides, a ceramic capillary system was developed and characterized for the continuous production of a consistent peptide composition. Therefore, the protease Alcalase was immobilized on the surface of aminosilane modified yttria stabilized zirconia capillaries with a pore size of 1.5 µm. The loading capacity was 0.3 µg enzyme per mg of capillary with a residual enzyme activity of 43%. The enzyme specific peptide fingerprint produced with this proteolytic capillary reactor system correlated with the degree of hydrolysis, which can be controlled over the residence time by adjusting the flow rate. Common food proteins like casein, sunflower and lupin protein isolates were tested for continuous hydrolysis in the developed reactor system. The peptide formation was investigated by high-performance liquid chromatography. Various trends were found for the occurrence of specific peptides. Some are just intermediately occurring, while others cumulate by time. Thus, the developed continuous reactor system enables the production of specific peptides with desired bioactive properties. © 2018, The Author(s).
Arctous alpina L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. alpina L. Cat. 302. Obere Höhengrenze festzustellen. Die Angabe «Gornergrat, 3000 m (Saint-Lager)» dürfte irrig sein. Die Art geht kaum höher als 2700 m. Mit weissen Blüten: La Crevasse ob Sembrancher, 1650 m (Oberson 1952).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Nanostructured bifunctional hydrogels as potential instructing platform for hematopoietic stem cell differentiation
Creators: name: Kratzer, Domenic
name: Ludwig-Husemann, Anita
name: Junges, Katharina
name: Geckle, Udo
name: Lee-Thedieck, Cornelia
Publisher: name: Lausanne : Frontiers Media S.A.
Year: 2019
Subjects: subject: Bifunctional PEGs
subject: Cell culture
subject: Hematopoietic stem cells
subject: Nanostructured hydrogels
subject: T cells
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Hematopoietic stem cells (HSCs) are blood forming cells which possess the ability to differentiate into all types of blood cells. T cells are one important cell type HSCs can differentiate into, via corresponding progenitor cells. T cells are part of the adaptive immune system as they mediate cellular immune responses. Due to this crucial function, in vitro differentiated T cells are the subject of current studies in the biomedical field in terms of cell transplantation. Studies show that the density of the immobilized Notch ligand Delta-like 1 (DLL1) presented in HSCs' environment can stimulate their differentiation toward T cells. The development of reliable synthetic cell culture systems presenting variable densities of DLL1 is promising for the future expansion of T cells' clinical applications. Here we introduce bifunctional polyethylene glycol-based (PEG-based) hydrogels as a potential instructing platform for the differentiation of human hematopoietic stem and progenitor cells (HSPCs) to T cells. PEG hydrogels bearing the cell adhesion supporting motif RGD (arginyl-glycyl-aspartic acid) were synthesized by UV-light induced radical copolymerization of PEG diacrylate and RGD modified PEG acrylate. The hydrogels were furthermore nanostructured by incorporation of gold nanoparticle arrays that were produced by block copolymer micelle nanolithography (BCML). BCML allows for the decoration of surfaces with gold nanoparticles in a hexagonal manner with well-defined interparticle distances. To determine the impact of DLL1 density on the cell differentiation, hydrogels with particle distances of ~40 and 90 nm were synthesized and the gold nanoparticles were functionalized with DLL1. After 27 days in culture, HSPCs showed an unphysiological differentiation status and, therefore, the differentiation was evaluated as atypical T lymphoid differentiation. Cluster of differentiation (CD) 4 was the only tested T cell marker which was expressed clearly in all samples. Thus, although the applied nanopatterned hydrogels affected two important signaling pathways (integrins and Notch) for T cell differentiation, it appears that more functionalities that control T cell differentiation in nature need to be considered for achieving fully synthetic in vitro T cell differentiation strategies.
Spectral Properties of the Dirichlet Operator $\sum_{i=1}^d (-\partial_i^2)^s$ on Domains in d-Dimensional Euclidean Space
Creators: name: Hatzinikitas, Agapitos N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this article we investigate the distribution of eigenvalues of the Dirichlet pseudo-differential operator $\sum_{i=1}^{d}(-\partial_i^2)^{s}, \, s\in (1/2,1]$ on an open and bounded subdomain $Ω\subset \mathbb{R}^d$ and predict bounds on the sum of the first $N$ eigenvalues, the counting function, the Riesz means and the trace of the heat kernel. Moreover, utilizing the connection of coherent states to the semi-classical approach of Quantum Mechanics we determine the sum for moments of eigenvalues of the associated Schrödinger operator.
description: 16 pages
Publisher Correction: Functionalization of gold-nanoparticles by the Clostridium perfringens enterotoxin C-terminus for tumor cell ablation using the gold nanoparticle-mediated laser perforation technique (Scientific Reports 8 (2018), 14963, https://doi.org/10.1038/s41598-018-33392-0)
Creators: name: Becker, Annegret
name: Leskau, Miriam
name: Schlingmann-Molina, Barbara L.
name: Hohmeier, Susanne C.
name: Alnajjar, Suhayla
name: Murua Escobar, Hugo
name: Ngezahayo, Anaclet
Publisher: name: London : Nature Publishing Group
Year: 2019
Subjects: subject: erratum
subject: error
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::600 | Technik

description: In the original version of this Article, the author Hugo Murua Escobar was incorrectly indexed. This error has now been corrected. Correction to: Scientific Reports https://doi.org/10.1038/s41598-018-33392-0, published online 08 October 2018
A Triple-Isotope Approach to Predict the Breeding Origins of European Bats
Creators: name: Popa-Lisseanu, Ana G.
name: Soergel, Karin
name: Luckner, Anja
name: Wassenaar, Leonard I.
name: Ibanez, Carlos
name: Kramer-Schadt, Stephanie
name: Ciechanowski, Mateusz
name: Goerfoel, Tamas
name: Niermann, Ivo
name: Beuneux, Gregory
name: Myslajek, Robert W.
name: Juste, Javier
name: Fonderflick, Jocelyn
name: Kelm, Detlev H.
name: Voigt, Christian C.
Publisher: name: San Francisco : Public Library Science
Year: 2012
Subjects: subject: stable-isotopes
subject: migratory connectivity
subject: delta-d
subject: north-america
subject: monarch butterflies
subject: natal origins
subject: lesser scaup
subject: hydrogen
subject: ratios
subject: birds
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::590 | Tiere (Zoologie)
subject: Dewey Decimal Classification::500 | Naturwissenschaften::551 | Geologie, Hydrologie, Meteorologie

description: Despite a commitment by the European Union to protect its migratory bat populations, conservation efforts are hindered by a poor understanding of bat migratory strategies and connectivity between breeding and wintering grounds. Traditional methods like mark-recapture are ineffective to study broad-scale bat migratory patterns. Stable hydrogen isotopes (delta D) have been proven useful in establishing spatial migratory connectivity of animal populations. Before applying this tool, the method was calibrated using bat samples of known origin. Here we established the potential of delta D as a robust geographical tracer of breeding origins of European bats by measuring delta D in hair of five sedentary bat species from 45 locations throughout Europe. The delta D of bat hair strongly correlated with well-established spatial isotopic patterns in mean annual precipitation in Europe, and therefore was highly correlated with latitude. We calculated a linear mixed-effects model, with species as random effect, linking delta D of bat hair to precipitation delta D of the areas of hair growth. This model can be used to predict breeding origins of European migrating bats. We used delta C-13 and delta N-15 to discriminate among potential origins of bats, and found that these isotopes can be used as variables to further refine origin predictions. A triple-isotope approach could thereby pinpoint populations or subpopulations that have distinct origins. Our results further corroborated stable isotope analysis as a powerful method to delineate animal migrations in Europe.
title: Michel Reddé und Siegmar von Schnurbein (Hrsg.), Alésia. Fouilles et recherches franco-allemandes sur les travaux militaires romains autour du Mont-Auxois (1991–1997)
Creators: name: Hanel, Norbert
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Michel Reddé und Siegmar von Schnurbein (Hrsg.), Alésia. Fouilles et recherches franco-allemandes sur les travaux militaires romains autour du Mont-Auxois (1991–1997). Mit Beiträgen von Ph. Barral, J. Bénard, St. Bender, N. Benecke, H. J. F. Bloemers, Ch. Bourquin-Mignot, V. Brouquier-Reddé, J.-F. Buoncristiani, A. Colin, R. Collot, G. Depierre, A. Deyber, J.-Cl. Druart, B. Fischer, A. Ge lot, O. Girardclos, R. Goguey, K. Gruel, M. Joly, A. Kermorvant, H.-J. Köhler, W. Kuchenbrod, J. Monnier, Cl. Mordant, Ch. Petit, L. Popovitch, H. Richard, M. Reddé, S. von Schnurbein, S. Sievers, C. van Driel-Murray, C. Wenzel. Mémoires de l’Académie des Inscriptions et Belles-Lettres, Band 22. Diffussion De Boccard, Paris 2001. Band 1: XX und 562 Seiten, 298 Abbildungen, 3 Farbtafeln, 1 CD-ROM. – Band 2: 386 Seiten, 25 Abbildungen, 116 Tafeln. – Band 3: 19 Beilagen
Laser scribing on HOPG for graphene stamp printing on silicon wafer
Creators: name: Butikova, Jelena
name: Polyakov, Boris
name: Dimitrocenko, Lauris
name: Butanovs, Edgars
name: Tale, Ivars
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Highly oriented pyrolytic graphite (HOPG) was scribed by pulsed laser beam to produce square patterns. Patterning of HOPG surface facilitates the detachment of graphene layers during contact printing. Direct HOPG-to-substrate and glue-assisted stamp printing of a few-layers graphene was compared. Printed graphene sheets were visualized by optical and scanning electron microscopy. The number of graphene layers was measured by atomic force microscopy. Glue-assisted stamp printing allows printing relatively large graphene sheets (40x40 microns) onto a silicon wafer, which can be important for microelectronics fabrication. The presented method is easier to implement and is more flexible than the majority of existing ways of placing graphene sheets onto a substrate.
description: 6 pages, 3 figures
pH-Dependent Conformational Changes of KcsA Tetramer and Monomer Probed by Raman Spectroscopy
Creators: name: Kniggendorf, Ann-Kathrin
name: Schmidt, David
name: Roth, Bernhard
name: Plettenburg, Oliver
name: Zeilinger, Carsten
Publisher: name: Basel : MDPI AG
Year: 2019
Subjects: subject: 532 nm
subject: KcsA
subject: liposome flux assay
subject: monomer
subject: pH-dependent gating
subject: Raman spectroscopy
subject: tetramer
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: KcsA is a tetrameric potassium channel formed out of four identical monomeric subunits used as a standard model for selective potassium transport and pH-dependent gating. Large conformational changes are reported for tetramer and monomer upon gating, and the response of the monomer being controversial with the two major studies partially contradicting each other. KcsA was analyzed as functional tetramers embedded in liposomes and as monomer subunits with confocal Raman microscopy under physiological conditions for the active and the closed channel state, using 532 nm excitation to avoid introducing conformational changes during the measurement. Channel function was confirmed using liposome flux assay. While the classic fingerprint region below 1800 rel. cm-1 in the Raman spectrum of the tetramer was unaffected, the CH-stretching region between 2800 and 3200 rel. cm-1 was found to be strongly affected by the conformation. No pH-dependency was observed in the Raman spectra of the monomer subunits, which closely resembled the Raman spectrum of the tetramer in its active conformation, indicating that the open conformation of the monomer and not the closed conformation as postulated may equal the relaxed state of the molecule.
Renormalization Group Flow of Hexatic Membranes
Creators: name: Codello, Alessandro
name: Zanusso, Omar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate hexatic membranes embedded in Euclidean D-dimensional space using a reparametrization invariant formulation combined with exact renormalization group (RG) equations. An XY-model coupled to a fluid membrane, when integrated out, induces long-range interactions between curvatures described by a Polyakov term in the effective action. We evaluate the contributions of this term to the running surface tension, bending and Gaussian rigidities in the approximation of vanishing disclination (vortex) fugacity. We find a non-Gaussian fixed-point where the membrane is crinkled and has a non-trivial fractal dimension.
description: 6 pages, 3 figures
Extracellular vesicle refractive index derivation utilizing orthogonal characterization.
Creators: name: Welsh, Joshua
name: Cook, Sean
name: Pleet, Michelle
name: Stack, Emily
name: Jones, Jennifer
name: Jacobson, Steve
Publisher: name: figshare
Year: 2023
Subjects: Bioinformatics and computational biology not elsewhere classified

description: The analysis of small particles, including extracellular vesicles and viruses, is contingent on their ability to scatter sufficient light to be detected. These detection methods include flow cytometry, nanoparticle tracking analysis, and single particle reflective image sensing. To standardize measurements and enable orthogonal comparisons between platforms, a quantifiable limit of detection is required. The main parameters that dictate the amount of light scattered by particles include size, morphology, and refractive index. To date, there have been a lack of accessible techniques for measuring the refractive index of nanoparticles at a single-particle level. Here, we demonstrate two methods of deriving small particle refractive index using orthogonal measurements with commercially available platforms. These methods can be applied either at a single-particle or population level, enabling the integration of diameter and scattering cross section values to derive refractive index using Mie theory.
Ectoparasite communities of small-bodied Malagasy primates: Seasonal and socioecological influences on tick, mite and lice infestation of Microcebus murinus and M. ravelobensis in northwestern Madagascar
Creators: name: Klein, Annette
name: Zimmermann, Elke
name: Radespiel, Ute
name: Schaarschmidt, Frank
name: Springer, Andrea
name: Strube, Christina
Publisher: name: London : BioMed Central Ltd.
Year: 2018
Subjects: subject: Ectoparasites
subject: Haemaphysalis
subject: Laelaptidae
subject: Lemurpediculus
subject: Lemurs
subject: Seasonality
subject: Socioecology
subject: Trombiculidae
subject: Dewey Decimal Classification::500 | Naturwissenschaften::590 | Tiere (Zoologie)

description: Background: Ectoparasitic infections are of particular interest for endangered wildlife, as ectoparasites are potential vectors for inter- and intraspecific pathogen transmission and may be indicators to assess the health status of endangered populations. Here, ectoparasite dynamics in sympatric populations of two Malagasy mouse lemur species, Microcebus murinus and M. ravelobensis, were investigated over an 11-month period. Furthermore, the animals' body mass was determined as an indicator of body condition, reflecting seasonal and environmental challenges. Living in sympatry, the two study species experience the same environmental conditions, but show distinct differences in socioecology: Microcebus murinus sleeps in tree holes, either solitarily (males) or sometimes in groups (females only), whereas M. ravelobensis sleeps in mixed-sex groups in more open vegetation. Results: Both mouse lemur species hosted ticks (Haemaphysalis sp.), lice (Lemurpediculus sp.) and mites (Trombiculidae gen. sp. and Laelaptidae gen. sp.). Host species, as well as temporal variations (month and year), were identified as the main factors influencing infestation. Tick infestation peaked in the late dry season and was significantly more often observed in M. murinus (P = 0.011), while lice infestation was more likely in M. ravelobensis (P < 0.001) and showed a continuous increase over the course of the dry season. Genetic analyses identified Lemurpediculus sp. infesting both mouse lemur species. Ticks morphologically conform to H. lemuris, but genetic analysis showed a clear differentiation of the specimens collected in this study, suggesting a potentially new tick species. Host body mass decreased from the early to the late dry season, indicating nutritional stress during this period, which may render individuals more susceptible to parasitic infections. Conclusions: Seasonal differences and species-specific variations in sleeping site ecology in terms of sleeping site type and sociality were determined as key factors influencing ectoparasitism in M. murinus and M. ravelobensis. This needs to be taken into account when evaluating ectoparasite infestations at a given time point. The detection of the same parasite species on two closely related and sympatric host species furthermore indicates a potential pathway for disease transmission, not only within but also between lemur species.
title: Afghanische Anthroponyme im Spiegel der Moderne – Ein Beitrag zur afghanischen Namenkunde (Teil 2)
Creators: name: Saber, Nasim
name: Weber, Siegfried
Publisher: name: University Library Heidelberg
Year: 2016

description: Im ersten Teil unserer Artikelserie stellten wir fest, dass Namengebung im Allgemeinen ein sozialer Akt ist. Mithin spiegeln Namen Lebenswirklichkeiten. In Afghanistan ist dies ebenso vorauszusetzen. Gravierender Unterschied zu hiesigen Gegebenheiten ist, dass Beinamen kein allgemeingültiges Gut darstellen, aktuell aber aus administrativen Gründen gefordert werden. Im Folgenden beschäftigen wir uns zunächst mit den Rufnamen, danach geben wir einen Überblick über die Möglichkeiten der Beinamenkreation. نسیم صابر و زیگفرید وبر در بخش اول این مقاله استدلال شد که نام‌گذاری در کلیت امر یک کنش اجتماعی است. در آینه‌ی این کنش واقعیات اجتماعی نمود پیدا می‌کنند. در افغانستان نیز همین حال حاکم است، با نظر به این ویژگی خاص، که در افغانستان الغاب اعتبار کلی ندارند، اما در شرایط فعلی به دلایل اداری و سازمانی رسمیت یافته و پشتیبانی می شوند. در ادامه بدوا به نام های کوچک می پردازیم و سپس نگاهی اجمالی به امکانات ساخت الغاب می‌افکنیم.
Defect recombination induced by density-activated carrier diffusion in nonpolar InGaN quantum wells
Creators: name: Yang, Fan
name: Zhang, Chunfeng
name: Shi, Chentian
name: Park, Min Joo
name: Kwak, Joon Seop
name: Jung, Sukkoo
name: Choi, Yoon-Ho
name: Wu, Xuewei
name: Wang, Xiaoyong
name: Xiao, Min
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the observation of carrier-diffusion-induced defect emission at high excitation density in a-plane InGaN single quantum wells. When increasing excitation density in a relatively high regime, we observed the emergence of defect-related emission together with a significant reduction in bandedge emission efficiency. The experimental results can be well explained with the density-activated carrier diffusion from localized states to defect states. Such a scenario of density-activated defect recombination, as confirmed by the dependences of photoluminescence on the excitation photon energy and temperature, is a plausible origin of efficiency droop in a-plane InGaN quantum-well light-emitting diodes.
description: 15 pages, 4 figures
Salamandra salamandra homology annotation blastx-trembl
Creators: name: Libro, Pietro
name: Chiocchio, Andrea
name: De Risky, Erika
name: Di Martino, Jessica
name: Bisconti, Roberta
name: Castrignanò, Tiziana
name: Canestrelli, Daniele
Publisher: name: figshare
Year: 2023
Subjects: Bioinformatics and computational biology not elsewhere classified

description: Dispersal is a key process in ecology and evolutionary biology, as it shapes biodiversity patterns over space and time. Mounting evidence is showing that attitude to disperse is unevenly distributed among individuals within animal populations, and that individual personality can have pivotal roles in the shaping of this attitude. Here, we contribute to the study of the genetic underpinnings of dispersal-related behavioral variation by assembling and annotating the first de novo transcriptome of the head tissues of Salamandra salamandra. Although dispersal occurs mostly during the post-metamorphic terrestrial life stage in this species, variation in dispersal-related personality traits is already evident at the aquatic larval stage, making it an excellent candidate species for studies of carry-over effects. We employed a structured pipeline to de-novo assemble and annotate transcripts from RNA-Seq in a set of individuals representative of distinct behavioral profiles. We obtained 1,153,432,918 reads, which were successfully de novo assembled and annotated. The high-quality assembly was confirmed by comparing BUSCO, DETONATE and TransRate with the S. salamandra dataset. By aligning the contigs against the de novo transcriptome we obtained a percentage of mapping higher than 94%. The homology annotation performed with DIAMOND led to 153,048 (blastx) and 95,942 (blastp) shared contigs, annotated on NCBI nr, Swiss-Prot and TrEMBL. The domain and site protein prediction made with InterProScan led to 9850 GO-annotated contigs. This de-novo transcriptome represents reliable reference for whole transcriptome and proteome studies of other amphibians, for designing primers to clone specific genes or monitor their expression, and for analyzing comparative gene expression profiles between alternative behavioral types.
Disentangling shallow-water bulk carbonate carbon isotope archives with evidence for multi-stage diagenesis: An in-depth component specific petrographic and geochemical study from Oman (mid-Cretaceous)
Creators: name: Huck, Stefan
name: Wohlwend, Stephan
name: Weissert, Helmut
name: Coimbra, Rute
name: Christ, Nicolas
Publisher: name: Hoboken : Wiley-Blackwell Publishing
Year: 2017
Subjects: subject: Arabian carbonta platform
subject: Barremian - Aptian
subject: multi stage diagenesis
subject: shallow - water chemostratigraphy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Disentangling shallow-water bulk carbonate carbon isotope archives into primary and diagenetic components is a notoriously difficult task and even diagenetically screened records often provide chemostratigraphic patterns that significantly differ from global signals. This is mainly caused by the polygenetic nature of shallow-water carbonate substrates, local carbon cycle processes causing considerable neritic-pelagic isotope gradients and the presence of hiatal surfaces resulting in extremely low carbonate preservation rates. Provided here is an in-depth petrographic and geochemical evaluation of different carbonate phases of a mid-Cretaceous (Barremian-Aptian) shallow-water limestone succession (Jabal Madar section) deposited on the tropical Arabian carbonate platform in Oman. The superposition of stable isotope signatures of identified carbonate phases causes a complex and often noisy bulk carbon isotope pattern. Blocky sparite cements filling intergranular pores and bioclastic voids evidence intermediate to (arguably) deep burial diagenetic conditions during their formation, owing to different timing or differential faulting promoting the circulation of fluids from variable sources. In contrast, sparite cements filling sub-vertical veins reveal a rock-buffered diagenetic fluid composition with an intriguing moderate enrichment in C-13, probably due to fractionation during pressure release in the context of the Miocene exhumation of the carbonate platform under study. The presence of abundant, replacive dedolomite in mud-supported limestone samples forced negative carbon and oxygen isotope changes that are either associated with the thermal breakdown of organic matter in the deep burial realm or the expulsion of buried meteoric water in the intermediate burial realm. Notwithstanding the documented stratigraphically variable and often facies-related impact of different diagenetic fluids on the bulk-rock stable isotope signature, the identification of diagenetic end-members defined C-13 and O-18 threshold values that allowed the most reliable primary' bulk carbon isotope signatures to be extracted. Most importantly, this approach exemplifies how to place regional shallow-water stable isotope patterns with evidence for a complex multi-stage diagenetic history into a supraregional or even global context.
title: Seal and Polar Bear Behavioral Response to an Icebreaker Vessel in Northwest Greenland
Creators: name: Lomac-MacNair, Kate
name: Pedro Andrade, José
name: Esteves, Eduardo
Publisher: name: Utah State University
Year: 2019

description: Icebreaker vessels are important scientific tools, enabling access and research within the polar regions of the world, including the High Arctic. These vessels have the potential to overlap with marine mammal habitats in infrequently studied areas. Marine mammal behavioral responses to icebreaker vessel presence and distance at which responses occur are not well documented or understood. During the Petermann 2015 Expedition on the icebreaker Oden, seal and polar bear (Ursus maritimus) data were collected in Petermann Fjord (Northwest Greenland), the adjacent Nares Strait region, and transit to and from Thule, Greenland over 31 days (July 30 to August 30, 2015). We examined behavioral responses from 4 pinniped species: bearded seal (Erignathus barbatus), ringed seal (Pusa hispida), harp seal (Pagophilus groenlandicus), and hooded seal (Crystophora cristata), as well as the polar bear to an icebreaker vessel in a rarely studied region of northwest Greenland. We investigated the rate of flush response, entering the water from a previously hauled out (i.e., resting) location on ice in relation to seal distance to the vessel. Our results showed a significant difference (independent t-test, P ≤ 0.001) between seal distance to the vessel when a flush response occurred (mean = 467.1 m, SD = 212.39 m) and when no flush response occurred (mean = 1334.0 m, SD = 433.89 m). There were fewer flush responses by seals to the icebreaker at distances >600 m and no flush responses by seals to the icebreaker at distances >800 m. We used a logistic model to describe the relationship between the proportion of seals that flushed and distance from the icebreaker. Results of the logistical model showed the estimated distance at which 50% of the seals flushed to be 709.45 m (SE = 9.24, t = 76.8, P < 0.0001). Three polar bears were recorded during the transit, and a behavioral response (e.g., look, approach, move away) was recorded for all 3 sightings. Our preliminary findings are relevant to assess potential impacts of increasing vessel activity in the High Arctic and to assist in the development of effective monitoring and mitigation strategies.
Gravitational waveforms for unequal mass black hole binaries detectable by KAGRA
Creators: name: Tápai, Márton
name: Keresztes, Zoltán
name: Gergely, László Á.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitational waveforms generated by unequal mass black hole binaries are expected to be common sources for future gravitational wave detectors. We derived the waveforms emitted by such systems during the last part of the inspiral, when the larger spin dominates over the orbital angular momentum and the smaller spin is negligible. These Spin-Dominated Waveforms (SDW) arise as a double expansion in the post-Newtonian parameter and another parameter proportional to the ratio of the orbital angular momentum and the dominant spin. The time spent by the gravitational wave as an SDW in the sensitivity range of the KAGRA detector is presented for the first time.
description: 3 pages, to be published in the Proceedings of the Thirteenth Marcel Grossmann Meeting, Stockholm, Sweden 2012
title: Foraging Preferences of Barnacle Geese on Endophytic Tall and Red Fescues
Creators: name: Koski, Tuuli-Marjaana
name: Saikkonen, Kari
name: Klemola, Tero
name: Helander, Marjo
Publisher: name: Utah State University
Year: 2019

description: Many grasses (Poaceae) have symbiotic fungal endophytes, which affect livestock by producing unpalatable or harmful secondary compounds. Less is known about the repelling effects of fungal endophytes on avian grazers despite potential wildlife management implications. Herbivorous goose (Branta spp.) species may become a nuisance in recreational use areas via fecal littering. Planting these areas with grasses that avian grazers avoid may help mitigate this damage. In 2016, we studied the foraging preference of the barnacle geese (B. leucopsis) with endophytic (E+) or endophyte-free (E-) red fescue (Festuca rubra) and/or tall fescue (Schedonorus phoenix) in 2 sites in Finland that had a history of nuisance geese damage. In the high grazing pressure site, we planted both grass species, while in the low grazing pressure site only tall fescue was used. Geese preference was measured as the percentage of the area grazed, the height of the residual grass grazed, and the number of fecal droppings in the grass plots. Geese foraging did not differ between E- and E+ grasses, but red fescues were preferred over tall fescues. This supports previous findings that tall fescues or other coarse species could reduce the attractiveness of recreational areas to geese.
Generation and Characterisation of a Canine EGFP-HMGA2 Prostate Cancer In Vitro Model
Creators: name: Willenbrock, Saskia
name: Wagner, Siegfried
name: Reimann-Berg, Nicola
name: Moulay, Mohammed
name: Hewicker-Trautwein, Marion
name: Nolte, Ingo
name: Escobar, Hugo Murua
Publisher: name: San Francisco : Public Library Science
Year: 2014
Subjects: subject: carcinoma cell-line
subject: mobility group a2
subject: group chromosomal-proteins
subject: let-7 microrna family
subject: hmgi-c
subject: breast-cancer
subject: vivo model
subject: tumor-development
subject: peripheral-blood
subject: feedback loop
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: The architectural transcription factor HMGA2 is abundantly expressed during embryonic development. In several malignant neoplasias including prostate cancer, high re-expression of HMGA2 is correlated with malignancy and poor prognosis. The let-7 miRNA family is described to regulate HMGA2 negatively. The balance of let-7 and HMGA2 is discussed to play a major role in tumour aetiology. To further analyse the role of HMGA2 in prostate cancer a stable and highly reproducible in vitro model system is precondition. Herein we established a canine CT1258-EGFP-HMGA2 prostate cancer cell line stably overexpressing HMGA2 linked to EGFP and in addition the reference cell line CT1258-EGFP expressing solely EGFP to exclude EGFP-induced effects. Both recombinant cell lines were characterised by fluorescence microscopy, flow cytometry and immunocytochemistry. The proliferative effect of ectopically overexpressed HMGA2 was determined via BrdU assays. Comparative karyotyping of the derived and the initial CT1258 cell lines was performed to analyse chromosome consistency. The impact of the ectopic HMGA2 expression on its regulator let-7a was analysed by quantitative real-time PCR. Fluorescence microscopy and immunocytochemistry detected successful expression of the EGFP-HMGA2 fusion protein exclusively accumulating in the nucleus. Gene expression analyses confirmed HMGA2 overexpression in CT1258-EGFP-HMGA2 in comparison to CT1258-EGFP and native cells. Significantly higher let-7a expression levels were found in CT1258-EGFP-HMGA2 and CT1258-EGFP. The BrdU assays detected an increased proliferation of CT1258-HMGA2-EGFP cells compared to CT1258-EGFP and native CT1258. The cytogenetic analyses of CT1258-EGFP and CT1258-EGFP-HMGA2 resulted in a comparable hyperdiploid karyotype as described for native CT1258 cells. To further investigate the impact of recombinant overexpressed HMGA2 on CT1258 cells, other selected targets described to underlie HMGA2 regulation were screened in addition. The new fluorescent CT1258-EGFP-HMGA2 cell line is a stable tool enabling in vitro and in vivo analyses of the HMGA2-mediated effects on cells and the development and pathogenesis of prostate cancer.
title: Effectiveness of Snap and A24-Automated Traps and Broadcast Anticoagulant Bait in Suppressing Commensal Rodents in Hawaii
Creators: name: Shiels, Aaron B.
name: Bogardus, Tyler
name: Rohrer, Jobriath
name: Kawelo, Kapua
Publisher: name: Utah State University
Year: 2019

description: Commensal rodents (invasive rats, Rattus spp.; house mice, Mus musculus) are well established globally. They threaten human health by disease transfer and impact economies by causing agricultural damage. On island landscapes, they are frequent predators of native species and affect biodiversity. To provide managers with better information regarding methods to suppress commensal rodent populations in remote island forests, in 2016 we evaluated the effectiveness of continuous rat trapping using snap-traps, Goodnature®A24 self-resetting rat traps, and a 1-time (2-application) hand-broadcast of anticoagulant rodenticide bait pellets (Diphacinone-50) applied at 13.8 kg/ha per application in a 5-ha forest on Oahu, Hawaii, USA. We compared rat and mouse abundance at the rat trapping site to a reference site by monitoring rodent tracking tunnels, which are baited ink cards in tunnels that allow footprints of animal visitors to be identified. We found that trapping reduced rat, but not mouse, abundance. The rodenticide treatment did not further reduce rat populations (P = 0.139), but temporarily reduced the mouse populations (P < 0.001; from 33% tracking to 0% for 1.3 months). Our study highlighted the role of continuous trapping for rats and rodenticide baiting for mice as effective methods to suppress commensal rodent populations in remote island forests to protect native species biodiversity.
Turbulent amplification of magnetic field driven by dynamo effect at rippled shocks
Creators: name: Fraschetti, Federico
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We derive analytically the vorticity generated downstream of a two-dimensional rippled hydromagnetic shock neglecting fluid viscosity and resistivity. The growth of the turbulent component of the downstream magnetic field is driven by the vortical eddies motion. We determine an analytic time-evolution of the magnetic field amplification at shocks, so far described only numerically, until saturation occurs due to seed-field reaction to field lines whirling. The explicit expression of the amplification growth rate and of the non-linear field back-reaction in terms of the parameters of shock and interstellar density fluctuations is derived from MHD jump conditions at rippled shocks. A magnetic field saturation up to the order of milligauss and a short-time variability in the $X$-ray observations of supernova remnants can be obtained by using reasonable parameters for the interstellar turbulence.
description: 9 pages, 4 figures, The Astrophyical Journal in press
title: Application Strategy for an Anthraquinone-Based Repellent and the Protection of Soybeans from Canada Goose Depredation
Creators: name: Werner, Scott J.
name: Gottlob, Matthew
name: Dieter, Charles D
name: Stafford, Joshua D
Publisher: name: Utah State University
Year: 2019

description: Agricultural crops can sustain extensive damage caused by Canada geese (Branta canadensis) when these crops are planted near wetlands or brood-rearing sites. From 2000 to 2015, South Dakota Game, Fish and Parks spent >$5.6 million to manage damages caused by Canada geese to agricultural crops (primarily soybeans) in South Dakota, USA. For the purpose of developing a repellent application strategy for nonlethal goose damage management, we comparatively evaluated the width of anthraquinone applications (i.e., 9.4 L Flight Control® Plus goose repellent/ha [active ingredient: 50% 9,10-anthraquinone] at 0–36 m versus 0–73 m perpendicular to the edge of wetlands in 2014), the timing of the first repellent application (i.e., 9.4 L Flight Control Plus goose repellent/ha at 50% versus 75% seedling emergence in 2015), the yield of soybeans (Glycine max) within repellent-treated and untreated subplots, and anthraquinone chemical residues in Day County, South Dakota. Soybean yield was greater in subplots 73 m from the water’s edge than that in the 36-m subplots (P < 0.02). Among subplots first sprayed at 50% seedling emergence, soybean yield was greater at 73 m and 82 m than that at 36 m (P < 0.005). In contrast, we observed no difference in yield at 36 m, 73 m, or 82 m in the subplots first sprayed at 72% seedling emergence (P > 0.09). We therefore conclude that goose damages were effectively managed in subplots first sprayed at 72% seedling emergence. Anthraquinone residues averaged 674 and 629 ppm anthraquinone upon the first application of the repellent (June to July), 22 and 35 ppm anthraquinone in the mid-season hay (August to September), and 36 and 28 ppb anthraquinone in the harvested seed (October to November) in 2014 and 2015, respectively. Our results suggest that a 73-m bandwidth of anthraquinone-based repellents first applied at approximately 72% or 65–85% seedling emergence can protect soybeans from Canada goose depredation.
Phenotypic and Genotypic Characteristics of Members of the Genus Streptobacillus
Creators: name: Eisenberg, Tobias
name: Nicklas, Werner
name: Mauder, Norman
name: Rau, Joerg
name: Contzen, Matthias
name: Semmler, Torsten
name: Hofmann, Nicola
name: Aledelbi, Khayrieh
name: Ewers, Christa
Publisher: name: San Francisco : Public Library Science
Year: 2015
Subjects: subject: rat-bite fever
subject: polymerase-chain-reaction
subject: complete genome sequence
subject: hongkongensis sp nov.
subject: fusobacterium-nucleatum
subject: infrared-spectroscopy
subject: phylogenetic analysis
subject: fourier-transform
subject: ribosomal-rna
subject: moniliformis
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: The genus Streptobacillus (S.) remained monotypic for almost 90 years until two new species were recently described. The type species, S. moniliformis, is one of the two etiological agents of rat bite fever, an under-diagnosed, worldwide occurring zoonosis. In a polyphasic approach field isolates and reference strains of S. moniliformis, S. hongkongensis, S. felis as well as divergent isolates were characterized by comparison of molecular data (n = 29) and from the majority also by their physiological as well as proteomic properties (n = 22). Based on growth-independent physiological profiling using VITEK2-compact, API ZYM and the Micronaut system fastidious growth-related difficulties could be overcome and streptobacilli could definitively be typed despite generally few differences. While differing in their isolation sites and dates, S. moniliformis isolates were found to possess almost identical spectra in matrix-assisted laser desorption ionization-time of flight mass spectrometry and Fourier transform infrared spectroscopy. Spectroscopic methods facilitated differentiation of S. moniliformis, S. hongkongensis and S. felis as well as one divergent isolate. Sequencing of 16S rRNA gene as well as functional genes groEL, recA and gyrB revealed only little intraspecific variability, but generally proved suitable for interspecies discrimination between all three taxa and two groups of divergent isolates.