cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Two descriptions of the Quantum Group U_v(A_2 (2)) via Hall algebras and derived equivalences
Creators: name: Herr, Heike Karin
Publisher: name: Universität Paderborn
Year: 2023

description: Seien k = F_q, k K eine Körpererweiterung von Grad 4 und =(k 0, K K). Das erste neue Ergebnis dieser Arbeit ist die explizite Beschreibung der unzerlegbaren präprojektiven -Moduln mit Endomorphismenalgebra K. Dies vervollständigt die Klassifikation von D. Baer. Der Hauptfokus dieser Dissertation liegt auf der Strukturtheorie der quantisierten einhüllenden Algebra U_v(A_2 (2)) ausgehend von der Kategorie mod(). Durch Ergebnisse von C. Ringel und J. A. Green ist bekannt, dass das reduzierte Drinfeld-Doppel der Kompositionsalgebra von mod() isomorph ist zu U_v(A_2 (2)) (wobei v = q). Diese Algebra erlaubt auch eine weitere Realisierung U_v Dr(A_2 (2)) nach V. G. Drinfeld. Außerdem ist bekannt, dass mod() deriviert äquivalent ist zu der Kategorie Coh(X) von kohärenten Garben einer bestimmten nicht-kommutativen projektiven erblichen Kurve X. Das Hauptergebnis dieser Arbeit ist die Beschreibung der Kompositionsalgebra von Coh(X) durch Erzeuger und Relationen. Wir identifizieren das reduzierte Drinfeld-Doppel der Kompositionsalgebra von Coh(X) mit U_v Dr(A_2 (2)) und benutzen die derivierte Äquivalenz von mod() und Coh(X), um den Drinfeld-Beck-Isomorphismus zwischen U_v(A_2(2)) and U_v Dr(A_2 (2)) zu erhalten. Währenddessen finden wir kleinere Fehler in der Arbeit von T. Akasaka, wo dieser Isomorphismus genauer studiert wurde. Als eine Anwendung der Hall-theoretischen Herangehensweise konstruieren wir eine explizite Basis des positiven Teils U_v +(A_2 (2)), die orthogonal ist bezüglich der Drinfeld-Rosso-Form.
description: Let k=F_q, kK be a field extension of degree 4 and =(k 0, K K). The first new result of this thesis is an explicit description of indecomposable preprojective -modules with endomorphism algebra K, which completes the classification given by D. Baer. The main focus of this thesis belongs to the structure theory of the quantized enveloping algebra U_v(A_2 (2)) based on the study of the category mod(). By results of C. Ringel and J. A. Green, the reduced Drinfeld double of the composition algebra of mod() is isomorphic to U_v(A_2 (2)) (where v = q). This algebra admits another realization U_v Dr(A_2 (2)) due to V. G. Drinfeld. It is known that mod() is derived equivalent to the category Coh(X) of coherent sheaves on a certain non-commutative projective hereditary curve X. The main result of this thesis is the description of the composition algebra of Coh(X) via generators and relations. We identify the reduced Drinfeld double of the composition algebra of Coh(X) with U_v Dr(A_2 (2)) and use the derived equivalence of mod() and Coh(X) to recover the Drinfeld-Beck isomorphism between U_v(A_2 (2)) and U_v Dr(A_2 (2)). On the way, we detect some (minor) mistakes in the work of T. Akasaka, in which this isomorphism was studied in detail. As an application of this Hall-theoretical approach, we construct an explicit basis of the positive part U_v +(A_2 (2)) which is orthogonal with respect to the Drinfeld-Rosso form.
Structure and Stability of Filamentary Clouds Supported by Lateral Magnetic Field
Creators: name: Hanawa, Tomoyuki
name: Tomisaka, Kohji
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have constructed two types of analytical models for an isothermal filamentary cloud supported mainly by magnetic tension. The first one describes an isolated cloud while the second considers filamentary clouds spaced periodically. Both the models assume that the filamentary clouds are highly flattened. The former is proved to be the asymptotic limit of the latter in which each filamentary cloud is much thinner than the distance to the neighboring filaments. We show that these models reproduce main features of the 2D equilibrium model of Tomisaka (2014) for filamentary cloud threaded by perpendicular magnetic field. It is also shown that the critical mass to flux ratio is $ M /Φ= (2 π\sqrt{G}) ^{-1} $, where $ M $, $ Φ$ and $ G $ denote the cloud mass, the total magnetic flux of the cloud, and the gravitational constant, respectively. This upper bound coincides with that for an axisymmetric cloud supported by poloidal magnetic fields. We applied the variational principle for studying the Jeans instability of the first model. Our model cloud is unstable against fragmentation as well as the filamentary clouds threaded by longitudinal magnetic field. The fastest growing mode has a wavelength several times longer than the cloud diameter. The second model describes quasi-static evolution of filamentary molecular cloud by ambipolar diffusion.
description: 25 pages, 6 figures, to appear in ApJ
Microwave multimode memory with an Er$^{3+}$:Y$_2$SiO$_5$ spin ensemble
Creators: name: Probst, S.
name: Rotzinger, H.
name: Ustinov, A. V.
name: Bushev, P. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Interfacing photonic and solid-state qubits within a hybrid quantum architecture offers a promising route towards large scale distributed quantum computing. In that respect, hybrid quantum systems combining circuit QED with ions doped into solids are an attractive platform. There, the ions serve as coherent memory elements and reversible conversion elements of microwave to optical qubits. Among many possible spin-doped solids, erbium ions offer the unique opportunity of a coherent conversion of microwave photons into the telecom C-band at $1.54\,μ$m employed for long distance communication. In our work, we perform a time-resolved electron spin resonance study of an Er$^{3+}$:Y$_2$SiO$_5$ spin ensemble at milli-Kelvin temperatures and demonstrate multimode storage and retrieval of up to 16 coherent microwave pulses. The memory efficiency is measured to be 10$^{-4}$ at the coherence time of $T_2=5.6\,μ$s.
Contrasting extracellular enzyme activities of particle-associated bacteria from distinct provinces of the North Atlantic Ocean
Creators: name: Fuchs, Bernhard M.
name: Arnosti, Carol
name: Amann, Rudolf
name: Passow, Uta
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Microbial communities play a key role in the marine carbon cycle, processing much of phytoplankton-derived organic matter. The composition of these communities varies by depth, season, and location in the ocean; the functional consequences of these compositional variations for the carbon cycle are only beginning to be explored. We measured the abilities of microbial communities in the large-particle fraction (retained by a 10-μm pore-size cartridge filter) to enzymatically hydrolyze high molecular weight substrates, and therefore initiate carbon remineralization in four distinct oceanic provinces: the boreal polar (BPLR), the Arctic oceanic (ARCT), the North Atlantic drift (NADR), and the North Atlantic subtropical (NAST) provinces. Since we expected the large-particle fraction to include phytoplankton cells, we measured the hydrolysis of polysaccharide substrates (laminarin, fucoidan, xylan, and chondroitin sulfate) expected to be associated with phytoplankton. Hydrolysis rates and patterns clustered into two groups, the BPLR/ARCT and the NADR/NAST. All four substrates were hydrolyzed by the BPLR/ARCT communities; hydrolysis rates of individual substrate varied by factors of ca. 1–4. In contrast, chondroitin was not hydrolyzed in the NADR/NAST, and hydrolytic activity was dominated by laminarinase. Fluorescence in situ hybridization of the large-particle fraction post-incubation showed a substantial contribution (15–26%) of CF319a-positive cells (Bacteroidetes) to total DAPI-stainable cells. Concurrent studies of microbial community composition and of fosmids from these same stations also demonstrated similarities between BPLR and ARCT stations, which were distinct from the NADR/NAST stations. Together, these data support a picture of compositionally as well as functionally distinct communities across these oceanic provinces.
What drives engagement in the Clean Energy Ministerial? An assessment of domestic-level factors
Creators: name: Tosun, Jale
name: Rinscheid, Adrian
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: This study concentrates on the Clean Energy Ministerial (CEM) as one of several high-level global forums on climate change governance. The CEM can be conceptualised as a ‘polycentric’ organisation in which its members collaborate on a wide range of issues concerning the clean energy transition. Can we identify a set of domestic-level variables that explain the member states’ participation across different CEM initiatives? And can we identify clusters of CEM initiatives for which the same set of domestic-level variables provide robust explanations? Theoretically, we concentrate on domestic factors and how these explain engagement patterns in high-level global forums. Our findings for 12 initiatives show that there is no single domestic factor that explains engagement levels equally well for all CEM initiatives. Our overarching finding is that the domestic determinants of engagement vary across the initiatives, suggesting that future research should attend more closely to their specific features.
Kurzinfos, Netz- und Tagungstipps
Creators: name: Gütter, Susanne
name: Heisig, Sophie Friederike
name: Höhler-Brockmann, Hajo
Publisher: name: Rundbrief Grabungstechnik
Year: 2023

description: Rundbrief Grabungstechnik, Bd. 22 (2023): Rundbrief Grabungstechnik
Denitrification and environmental factors influencing nitrate removal in Guaymas Basin hydrothermally altered sediments
Creators: name: Joye, Samantha B.
name: Bowles, Marshall W.
name: Nigro, Lisa M.
name: Teske, Andreas P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: We measured potential nitrate removal and denitrification rates in hydrothermally altered sediments inhabited by Beggiatoa mats and adjacent brown oil stained sediments from the Guaymas Basin, Gulf of California. Sediments with Beggiatoa maintained slightly higher rates of potential denitrification than did brown sediments at 31.2 ± 12.1 versus 21.9 ± 1.4 µM N day−1, respectively. In contrast, the nitrate removal rates in brown sediments were higher than those observed in mat-hosting sediments at 418 ± 145 versus 174 ± 74 µM N day−1, respectively. Additional experiments were conducted to assess the responses of denitrifying communities to environmental factors [i.e., nitrate, sulfide, and dissolved organic carbon (DOC) concentration)]. The denitrifying community had a high affinity for nitrate (Km = 137 ± 91 µM NO3−), in comparison to other environmental communities of denitrifiers, and was capable of high maximum rates of denitrification (Vmax = 1164 ± 153 µM N day−1). The presence of sulfide resulted in significantly lower denitrification rates. Microorganisms with the potential to perform denitrification were assessed in these sediments using the bacterial 16S rRNA gene and nitrous oxide reductase (nosZ) functional gene libraries. The bacterial 16S rRNA gene clone library was dominated by Epsilonproteobacteria (38%), some of which (e.g., Sulfurimonas sp.) have a potential for sulfide-dependent denitrification. The nosZ clone library did not contain clones similar to pure culture denitrifiers; these clones were most closely associated with environmental clones.
Microbial communities at the borehole observatory on the Costa Rica Rift flank (Ocean Drilling Program Hole 896A)
Creators: name: Hyde, Andrew
name: Harris, Kate
name: Becker, Keir
name: Teske, Andreas
name: Clayton-Luce, Samuel
name: Nigro, Lisa M.
name: Orcutt, Beth N.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: The microbiology of subsurface, hydrothermally influenced basaltic crust flanking mid-ocean ridges has remained understudied, due to the difficulty in accessing the subsurface environment. The instrumented boreholes resulting from scientific ocean drilling offer access to samples of the formation fluids circulating through oceanic crust. We analyzed the phylogenetic diversity of bacterial communities of fluid and microbial mat samples collected in situ from the observatory at Ocean Drilling Program Hole 896A, drilled into ~6.5 million-year-old basaltic crust on the flank of the Costa Rica Rift in the equatorial Pacific Ocean. Bacterial 16S rRNA gene sequences recovered from borehole fluid and from a microbial mat coating the outer surface of the fluid port revealed both unique and shared phylotypes. The dominant bacterial clones from both samples were related to the autotrophic, sulfur-oxidizing genus Thiomicrospira. Both samples yielded diverse gamma- and alphaproteobacterial phylotypes, as well as members of the Bacteroidetes, Planctomycetes, and Verrucomicrobia. Analysis of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) genes (cbbL and cbbM) from the sampling port mat and from the borehole fluid demonstrated autotrophic carbon assimilation potential for in situ microbial communities; most cbbL genes were related to those of the sulfur-oxidizing genera Thioalkalivibrio and Thiomicrospira, and cbbM genes were affiliated with uncultured phylotypes from hydrothermal vent plumes and marine sediments. Several 16S rRNA gene phylotypes from the 896A observatory grouped with phylotypes recovered from seawater-exposed basalts and sulfide deposits at inactive hydrothermal vents, but there is little overlap with hydrothermally influenced basaltic boreholes 1026B and U1301A on the Juan de Fuca Ridge flank, suggesting that site-specific characteristics of Hole 896A (i.e., seawater mixing into borehole fluids) affect the microbial community composition.
Treatment of Kaposi Sarcoma-Associated Herpesvirus-Associated Cancers
Creators: name: Richards, Kristy L.
name: Damania, Blossom
name: Dittmer, Dirk P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Kaposi sarcoma (KS) is the most frequent AIDS-defining cancer worldwide. KS-associated herpesvirus (KSHV) is the etiological agent of KS, and the virus is also associated with two lymphoproliferative diseases. Both KS and KSHV-associated lymphomas, are cancers of unique molecular composition. They represent a challenge for cancer treatment and an opportunity to identify new mechanisms of transformation. Here, we review the current clinical insights into KSHV-associated cancers and discuss scientific insights into the pathobiology of KS, primary effusion lymphoma, and multicentric Castleman’s disease.
Understanding the Synergistic effect in Multifunctional and Lightweight  Hybrid Graphene Nanoplatelet and Glass Fiber-Reinforced Composites
Creators: Sansone, Nello D.
Razzaz, Zahir
Salari, Meysam
Tuccitto, Anthony V.
Leroux, Matthew
Lee, Patrick C.
Publisher: name: University of Alberta Library
Year: 2022

Conference abstract. Part of the Proceedings of the Canadian Society for Mechanical Engineering International Congress 2022.
Anaerobic oxidation of short-chain alkanes in hydrothermal sediments: potential influences on sulfur cycling and microbial diversity
Creators: name: Adams, Melissa M.
name: Joye, Samantha B.
name: Girguis, Peter R.
name: Hoarfrost, Adrienne L.
name: Bose, Arpita
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Short-chain alkanes play a substantial role in carbon and sulfur cycling at hydrocarbon-rich environments globally, yet few studies have examined the metabolism of ethane (C2), propane (C3), and butane (C4) in anoxic sediments in contrast to methane (C1). In hydrothermal vent systems, short-chain alkanes are formed over relatively short geological time scales via thermogenic processes and often exist at high concentrations. The sediment-covered hydrothermal vent systems at Middle Valley (MV, Juan de Fuca Ridge) are an ideal site for investigating the anaerobic oxidation of C1–C4 alkanes, given the elevated temperatures and dissolved hydrocarbon species characteristic of these metalliferous sediments. We examined whether MV microbial communities oxidized C1–C4 alkanes under mesophilic to thermophilic sulfate-reducing conditions. Here we present data from discrete temperature (25, 55, and 75°C) anaerobic batch reactor incubations of MV sediments supplemented with individual alkanes. Co-registered alkane consumption and sulfate reduction (SR) measurements provide clear evidence for C1–C4 alkane oxidation linked to SR over time and across temperatures. In these anaerobic batch reactor sediments, 16S ribosomal RNA pyrosequencing revealed that Deltaproteobacteria, particularly a novel sulfate-reducing lineage, were the likely phylotypes mediating the oxidation of C2–C4 alkanes. Maximum C1–C4 alkane oxidation rates occurred at 55°C, which reflects the mid-core sediment temperature profile and corroborates previous studies of rate maxima for the anaerobic oxidation of methane (AOM). Of the alkanes investigated, C3 was oxidized at the highest rate over time, then C4, C2, and C1, respectively. The implications of these results are discussed with respect to the potential competition between the anaerobic oxidation of C2–C4alkanes with AOM for available oxidants and the influence on the fate of C1 derived from these hydrothermal systems.
Identification of Francisella novicida mutants that fail to induce prostaglandin E2 synthesis by infected macrophages
Creators: name: Bryan, Joshua
name: Fuller, James R.
name: Barrigan, Lydia M.
name: Buntzman, Adam S.
name: Frelinger, Jeffrey A.
name: Woolard, Matthew D.
name: Kawula, Thomas H.
name: Manoil, Colin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Francisella tularensis is the causative agent of tularemia. We have previously shown that infection with F. tularensis Live Vaccine Strain (LVS) induces macrophages to synthesize prostaglandin E2 (PGE2). Synthesis of PGE2 by F. tularensis infected macrophages results in decreased T cell proliferation in vitro and increased bacterial survival in vivo. Although we understand some of the biological consequences of F. tularensis induced PGE2 synthesis by macrophages, we do not understand the cellular pathways (neither host nor bacterial) that result in up-regulation of the PGE2 biosynthetic pathway in F. tularensis infected macrophages. We took a genetic approach to begin to understand the molecular mechanisms of bacterial induction of PGE2 synthesis from infected macrophages. To identify F. tularensis genes necessary for the induction of PGE2 in primary macrophages, we infected cells with individual mutants from the closely related strain F. tularensis subspecies novicida U112 (U112) two allele mutant library. Twenty genes were identified that when disrupted resulted in U112 mutant strains unable to induce the synthesis of PGE2 by infected macrophages. Fourteen of the genes identified are located within the Francisella pathogenicity island (FPI). Genes in the FPI are required for F. tularensis to escape from the phagosome and replicate in the cytosol, which might account for the failure of U112 with transposon insertions within the FPI to induce PGE2. This implies that U112 mutant strains that do not grow intracellularly would also not induce PGE2. We found that U112 clpB::Tn grows within macrophages yet fails to induce PGE2, while U112 pdpA::Tn does not grow yet does induce PGE2. We also found that U112 iglC::Tn neither grows nor induces PGE2. These findings indicate that there is dissociation between intracellular growth and the ability of F. tularensis to induce PGE2 synthesis. These mutants provide a critical entrée into the pathways used in the host for PGE2 induction.
Biosphere frontiers of subsurface life in the sedimented hydrothermal system of Guaymas Basin
Creators: name: Callaghan, Amy V.
name: LaRowe, Douglas E.
name: Teske, Andreas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Temperature is one of the key constraints on the spatial extent, physiological and phylogenetic diversity, and biogeochemical function of subsurface life. A model system to explore these interrelationships should offer a suitable range of geochemical regimes, carbon substrates and temperature gradients under which microbial life can generate energy and sustain itself. In this theory and hypothesis article, we make the case for the hydrothermally heated sediments of Guaymas Basin in the Gulf of California as a suitable model system where extensive temperature and geochemical gradients create distinct niches for active microbial populations in the hydrothermally influenced sedimentary subsurface that in turn intercept and process hydrothermally generated carbon sources. We synthesize the evidence for high-temperature microbial methane cycling and sulfate reduction at Guaymas Basin – with an eye on sulfate-dependent oxidation of abundant alkanes – and demonstrate the energetic feasibility of these latter types of deep subsurface life in previously drilled Guaymas Basin locations of Deep-Sea Drilling Project 64.
Fueling opposition? Yellow vests, urban elites, and fuel taxation
Creators: name: Tatham, Michaël
name: Peters, Yvette
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Molecular Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: Plant Biology

description: The yellow vest movement in France was triggered by a fuel tax increase. The increase was designed to reduce petrol consumption and hence emissions. However, the costs of this policy were unequally distributed among citizens. The yellow vests illustrate that abstract support for public action against climate change is not enough to secure support for concrete policies. These policies run the risk of being opposed by citizens when their costs are unevenly spread across society. Through a survey experiment on Norwegian citizens, we analyse how different policy characteristics generate ‘support gaps’ within society. Particularly, we contrast two stylized profiles: ‘urban élites’ (high-educated urbanites) and ‘yellow vests’ (low-educated ruralites). We find that opposition rises with the individual cost of the policy but in a non-linear way. Environmental earmarking and invoking personal responsibility widen the gap between yellow vests, urban élites, and the rest of society. Redistribution to low-income households and invoking international commitments help to bridge such gaps. We argue that, instead of focusing on aggregate levels of support, both policymakers and academics should rather pay attention to the polarizing effects of certain policy attributes.
DNA-based stable isotope probing coupled with cultivation methods implicates Methylophaga in hydrocarbon degradation
Creators: name: Gutierrez, Tony
name: Aitken, Michael D.
name: Mishamandani, Sara
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Marine hydrocarbon-degrading bacteria perform a fundamental role in the oxidation and ultimate removal of crude oil and its petrochemical derivatives in coastal and open ocean environments. Those with an almost exclusive ability to utilize hydrocarbons as a sole carbon and energy source have been found confined to just a few genera. Here we used stable isotope probing (SIP), a valuable tool to link the phylogeny and function of targeted microbial groups, to investigate hydrocarbon-degrading bacteria in coastal North Carolina sea water (Beaufort Inlet, USA) with uniformly labeled [13C]n-hexadecane. The dominant sequences in clone libraries constructed from 13C-enriched bacterial DNA (from n-hexadecane enrichments) were identified to belong to the genus Alcanivorax, with ≤98% sequence identity to the closest type strain—thus representing a putative novel phylogenetic taxon within this genus. Unexpectedly, we also identified 13C-enriched sequences in heavy DNA fractions that were affiliated to the genus Methylophaga. This is a contentious group since, though some of its members have been proposed to degrade hydrocarbons, substantive evidence has not previously confirmed this. We used quantitative PCR primers targeting the 16S rRNA gene of the SIP-identified Alcanivorax and Methylophaga to determine their abundance in incubations amended with unlabeled n-hexadecane. Both showed substantial increases in gene copy number during the experiments. Subsequently, we isolated a strain representing the SIP-identified Methylophaga sequences (99.9% 16S rRNA gene sequence identity) and used it to show, for the first time, direct evidence of hydrocarbon degradation by a cultured Methylophaga sp. This study demonstrates the value of coupling SIP with cultivation methods to identify and expand on the known diversity of hydrocarbon-degrading bacteria in the marine environment.
Natural oil slicks fuel surface water microbial activities in the northern Gulf of Mexico
Creators: name: Sweet, Julia
name: Ziervogel, Kai
name: Yan, Beizhan
name: D'Souza, Nigel
name: Passow, Uta
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: We conducted a series of roller tank incubations with surface seawater from the Green Canyon oil reservoir, northern Gulf of Mexico, amended with either a natural oil slick (GCS-oil) or pristine oil. The goal was to test whether bacterial activities of natural surface water communities facilitate the formation of oil-rich marine snow (oil snow). Although oil snow did not form during any of our experiments, we found specific bacterial metabolic responses to the addition of GCS-oil that profoundly affected carbon cycling within our 4-days incubations. Peptidase and β-glucosidase activities indicative of bacterial enzymatic hydrolysis of peptides and carbohydrates, respectively, were suppressed upon the addition of GCS-oil relative to the non-oil treatment, suggesting that ascending oil and gas initially inhibits bacterial metabolism in surface water. Biodegradation of physically dispersed GCS-oil components, indicated by the degradation of lower molecular weight n-alkanes as well as the rapid transformation of particulate oil-carbon (C: N >40) into the DOC pool, led to the production of carbohydrate- and peptide-rich degradation byproducts and bacterial metabolites such as transparent exopolymer particles (TEP). TEP formation was highest at day 4 in the presence of GCS-oil; in contrast, TEP levels in the non-oil treatment already peaked at day 2. Cell-specific enzymatic activities closely followed TEP concentrations in the presence and absence of GCS-oil. These results demonstrate that the formation of oil slicks and activities of oil-degrading bacteria result in a temporal offset of microbial cycling of organic matter, affecting food web interactions and carbon cycling in surface waters over cold seeps.
FIT4RRI D3.3: Experiment 2 Report Photonics (Optical Monitoring)
Creators: name: Monaghan, Mary Jane
Publisher: name: Zenodo
Year: 2019
Subjects: RRI
Open Science
quadrupel helix
co-creation
science education

description: The project aimed to identify the understanding and opinions of internal and external
 stakeholders with regard to ethics and science education, using the RRI principals. The
 participants were asked to consider the ethical and science education implications of a
 monitoring system case study as well as drawing on their own experiences and opinions. Each
 participant was invited to fill out two questionnaire, one at start of the process and one at the
 end, attend a focus group and workshop and take part in a one-to-one interview. The results of
 the study show at the start there was a lack of understanding of why ethics was important and
 how to implement it effectively into a research project. By the end of the study most
 participants has a slight increase in ethical awareness and motivation to implement ethics
 however more support and clarity is still needed in this area. Furthermore the results suggest
 there was a widespread lack of understand of what is meant by science education. As a result
 of the workshop the participant now display a high increase in understanding and have
 developed the motivation to implement better science education for the benefit of society.
กลวิธีการใช้ภาษาเพื่อสื่ออารมณ์ขันในรายการ “ตามใจตุ๊ด”
Creators: name: ฐาปนี สีทาจันทร์
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: กลวิธีการใช้ภาษา
อารมณ์ขัน
ชาติพันธุ์วรรณนาแห่งการสื่อสาร

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 274-298
Picky, hungry eaters in the cold: persistent substrate selectivity among polar pelagic microbial communities
Creators: name: Steen, Andrew D.
name: Arnosti, Carol
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Polar pelagic microbial communities access a narrower range of polysaccharide substrates than communities at lower latitudes. For example, the glucose-containing polysaccharide pullulan is typically not hydrolyzed in fjord waters of Svalbard, even though pullulan is rapidly hydrolyzed in sediments from Svalbard fjords, other polysaccharides are hydrolyzed rapidly in Svalbard waters, and pullulan is hydrolyzed rapidly in temperate waters. The purpose of this study was to investigate potential factors preventing hydrolysis of pullulan in Svalbard fjord waters. To this end, in two separate years, water from Isfjorden, Svalbard, was amended with different carbon sources and/or additional nutrients in order to determine whether increasing the concentration of these potentially-limiting factors would lead to measurable enzymatic activity. Addition of nitrate, phosphate, glucose, or amino acids did not yield detectable pullulan hydrolysis. The only treatment that led to detectable pullulan hydrolysis was extended incubation after the addition of maltotriose (a subunit of pullulan, and potential inducer of pullulanase). In these fjords, the ability to enzymatically access pullulan is likely confined to numerically minor members of the pelagic microbial community. These results are consistent with the hypothesis that pelagic microbial communities at high latitudes exhibit streamlined functionality, focused on a narrower range of substrates, than their temperate counterparts.
Klienten*innendokumentation der ambulanten Glücksspielsuchtberatungen in Niedersachsen 2017-2022
Creators: name: Brosowski, Tim
name: Hayer, Tobias
Publisher: name: Universität Bremen
Year: 2023
Subjects: subject: Glücksspiel
subject: Glücksspielsucht
subject: Klientendokumentation
subject: ambulante Beratung
subject: 150

description: Der vorliegende Forschungsbericht stellt eine Fortsetzung der jahresbezogenen quantitativen Auswertungen der Beratungsprozesse von Personen mit einem problematischen Glücksspielverhalten sowie ihren Angehörigen aus dem Bundesland Niedersachsen dar. Grundlage dieses kommentierten Tabellenbandes sind das Beratungsjahr 2022 und die standardisierten Angaben von Berater*innen an 24 Standorten des regionalen ambulanten Glücksspielsuchthilfesystems. Nach Datenbereinigung flossen 1.156 Fälle in die Analysen mit ein. Hierunter befanden sich 985 Problemspieler*innen (85%) sowie 171 Angehörige (15%). Weiterführend bietet die Hinzuziehung der Datensätze von sechs Berichtsjahren (2017-2019, 2020, 2021) einen breiteren Kontext zur Beschreibung und Interpretation der dokumentierten Merkmale, die seit 2017 digitalisiert mit einem identischen Fragenkatalog erhoben werden. Die Größe des Datensatzes ermöglicht insgesamt stabile statistische Schätzungen, und die entsprechenden Jahresvergleiche bilden einen umfassenden Kontext, um aktuelle Veränderungen im Stile eines Sentinel- bzw. Wächter-Systems zu dokumentieren. Unter anderem konnte im Berichtsjahr 2022 seit 2016 erstmals wieder ein Anstieg der Beratungsfälle verzeichnet werden. Im Zusammenhang mit problemverursachenden Glücksspielformen lässt sich festhalten, dass Geldspielgeräte in Spielhallen und Gaststätten für die Mehrheit der beratenen Personen eine zentrale Rolle einnehmen. Seit 2017 ist allerdings zu beobachten, dass insbesondere Automatenspiele im Internet sowie Sportwetten im Internet bzw. vor Ort ihre Anteile als problemverursachende Glücksspielformen verdoppelt bis verdreifacht haben. Außerdem belegen inferenzstatistische Detailanalysen, dass Probleme mit Sportwetten (online oder offline) eher von erwerbstätigen jüngeren Männern mit höherer formaler Bildung angegeben werden. Im Gegensatz dazu berichten erwerbslose Personen mit geringerer formaler Bildung, einem höheren Alter bei Beratungsbeginn und einem Migrationshintergrund (selbst oder Eltern) eher von Problemen durch Geldspielgeräte in Spielhallen und Gaststätten. Schließlich waren Personen mit Problemen durch Internetglücksspiele (z. B. Sportwetten, Automaten, Poker, Großes Spiel) eher jünger, eher männlich, seltener erwerbslos und eher höher formal gebildet. Zusammenfassend verdeutlichen diese Befunde, dass einzelne Problemspielformen offensichtlich mit sehr individuellen sozio-demographischen Profilen bzw. Milieus assoziiert sind, deren differenzierte Analyse hilfreiche Hinweise für Prävention und Regulation mit sich bringt.
Refined interpretation of T e̳ response to neutral beam injection at DIII-D
Creators: name: Zhao, Bingzhe
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: ECE
NBI
DIII-D
NUBEAM

description: Neutral beam injection (NBI) is an essential tool in tokamaks as a source of power, particle and torque. Accurate knowledge of the beam deposition profiles is critical for understanding the effect of NBI as well as for transport analysis. Conventionally, the experimental deposition profiles of the beam are calculated based on Monte Carlo (MC) simulations. There were some previous attempts [1–3] to extract the beam deposition information from the electron temperature (T [subscript e]) responses through Fourier analysis, but the results fell short when the fast ion slowing-down time becomes significant (∼ 100 ms) and comparable to the plasma confinement time. In this work, the responses of the local T [subscript e] to NBI perturbation for some DIII-D discharges are reported and discussed quantitatively, and a novel approach to interpret the T [subscript e] responses was developed by linearizing and modeling the detailed T [subscript e] evolution trajectory using coherently averaged T [subscript e] measurements based on the different time scales of the terms in the local power and particle balance equations. The study is based on DIII-D plasma discharges with modulated NBI, or MNBI, under a variety of operation scenarios, with a focus on the T [subscript e] measurements made from the 5 kHz electron cyclotron emission radiometer (ECE) system. The results are benchmarked against simulations from ADAS-based MC beam code (NUBEAM) within the framework of plasma transport code (TRANSP or ONETWO). In general, good consistency and reasonable agreements are found, and notably a peculiar anomaly is observed suggesting unexpected interaction between the 3/2 magnetic island chain and the neutral beam. Additionally, an alternative statistical method based on system identification (SI) is also developed for this objective, with limited but promising results.
GDS: Gradient based Density Spline Surfaces for Multiobjective Optimization in Arbitrary Simulations
Creators: name: Lange, Patrick
name: Weller, René
name: Zachmann, Gabriel
Publisher: name: Universität Bremen
Year: 2017
Subjects: subject: Computing methodologies
subject: Modeling and simulation
subject: Model development and analysis
subject: Information systems
subject: Information systems applications
subject: Data Mining
subject: Decision support systems
subject: Objective function approximation
subject: Knowledge discovery in simulation
subject: Multi-objective optimization
subject: Spline interpolation
subject: Simulation based optimization
subject: B-Spline surface
subject: 0

description: We present a novel approach for approximating objective functions in arbitrary deterministic and stochastic multi-objective blackbox simulations. Usually, simulated-based optimization approaches require pre-defined objective functions for optimization techniques in order to find a local or global minimum of the specified simulation objectives and multi-objective constraints. Due to the increasing complexity of state-of-the-art simulations, such objective functions are not always available, leading to so-called blackbox simulations. In contrast to existing approaches, we approximate the objective functions and design space for deterministic and stochastic blackbox simulations, even for convex and concave Pareto fronts, thus enabling optimization for arbitrary simulations. Additionally, Pareto gradient information can be obtained from our design space approximation. Our approach gains its efficiency from a novel gradient-based sampling of the parameter space in combination with a density-based clustering of sampled objective function values, resulting in a B-spline surface approximation of the feasible design space. We have applied our new method to several benchmarks and the results show that our approach is able to efficiently approximate arbitrary objective functions. Additionally, the computed multi-objective solutions in our evaluation studies are close to the Pareto front.
การพูดติดขัดของผู้สูงอายุไทย: การศึกษาเปรียบเทียบระหว่างผู้ป่วยโรคสมองเสื่อมชนิดอัลไซเมอร์ระยะต้น ผู้สูงอายุที่มีภาวะการรู้คิดบกพร่องเล็กน้อย และผู้สูงอายุที่มีการรู้คิดปรกติ
Creators: name: อทิตา อมรลักษณานนท์
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: การพูดติดขัด
การพูดต่อเนื่อง
ภาวะการรู้คิดบกพร่องเล็กน้อย
อัลไซเมอร์
ภาษาไทย

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 299-334
การวิเคราะห์แนวคิดทางพระพุทธศาสนาเรื่องสาเหตุความแตกต่างของมนุษย์ด้วยหลักพันธุศาสตร์
Creators: name: จิราพร ศรีบุญเรือง
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: ความแตกต่างของมนุษย์
พระพุทธศาสนา
พันธุศาสตร์

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 335-354
Higher algebraic structures in Hamiltonian Floer theory
Creators: name: Fabert, Oliver
Publisher: name: arXiv
Year: 2014
Subjects: subject: Symplectic Geometry (math.SG)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53D42

description: In this paper we show how the rich algebraic formalism of Eliashberg-Givental-Hofer's symplectic field theory (SFT) can be used to define higher algebraic structures in Hamiltonian Floer theory. Using the SFT of Hamiltonian mapping tori we show how to define a homotopy extension of the well-known Lie bracket and discuss how it can be used to prove the existence of multiple closed Reeb orbits. Furthermore we show how to define the analogue of rational Gromov-Witten theory in the Hamiltonian Floer theory of open symplectic manifolds. More precisely, we introduce a so-called cohomology F-manifold structure in Hamiltonian Floer theory and prove that it generalizes the well-known Frobenius manifold structure in rational Gromov-Witten theory.
description: 55 pages; published final version, containing also results from 1310.6014. arXiv admin note: substantial text overlap with arXiv:1206.1564
มหาพนคำฉันท์: กลวิธีนำเสนอความสัมพันธ์ระหว่างธรรมชาติกับความหมายทางการเมือง
Creators: name: อรรถ ดีที่สุด
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: มหาพน
มหาชาติ
เวสสันดร
การเมือง
นิเวศวิจารณ์

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 355-378
In eigener Sache
Creators: name: Döbel, Susen
name: Gütter, Susanne
name: Heisig, Sophie Friederike
name: Höhler-Brockmann, Hajo
name: VGFA, Vorstand
Publisher: name: Rundbrief Grabungstechnik
Year: 2023

description: Rundbrief Grabungstechnik, Bd. 22 (2023): Rundbrief Grabungstechnik
The progenitor of the FUor-type young eruptive star 2MASS J06593158-0405277
Creators: name: Kóspál, Á.
name: Ábrahám, P.
name: Moór, A.
name: Haas, M.
name: Chini, R.
name: Hackstein, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Only a dozen confirmed FU Orionis-type young outbursting stars (FUors) are known today; this explains the interest in the recent FUor eruption of 2MASS J06593158-0405277. Its outburst and expected decline will be subject to numerous studies in the future. Almost equally important for the understanding of the eruption mechanism, however, is the physical characterization of the FUor's precursor. Here we analyze unpublished archival data and summarize - and partly revise - all relevant photometry from optical to submillimeter wavelengths. Our analysis implies that the FUor is possibly associated with eight T Tauri star candidates and a strong Class 0 source. Adopting a distance of 450 pc for the FUor, we derive a quiescent bolometric luminosity and temperature of L_bol = 4.8 L_Sun and T_bol = 1190 K, typical for young Class II sources. The central star has a temperature of T_eff = 4000 K, a mass of 0.75 M_Sun, and an age of about 6 x 10^5 yr. The SED implies a circumstellar mass of 0.01 - 0.06 M_Sun, and the system is surrounded by a faint infrared nebulosity. Our results provide an almost complete picture of a FUor progenitor, supporting the interpretation of future post-outburst studies.
description: 16 pages, 3 figures, 2 tables, accepted for publication in ApJ Letters
กระบวนการเกิดสัณฐานศูนย์กลางของชุมชนตลาดริมน้ำลำพญา ลุ่มน้ำนครชัยศรี จังหวัดนครปฐม
Creators: name: ฐปณี รัตนถาวร
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: ตลาดริมน้ำลำพญา
สัณฐานศูนย์กลาง
สเปซซินแท็กซ์
การท่องเที่ยว

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 379-408
Hand Pose Recognition — Overview and Current Research
Creators: name: Mohr, Daniel
name: Zachmann, Gabriel
Publisher: name: Universität Bremen
Year: 2015
Subjects: subject: hand tracking
subject: overview
subject: Applications
subject: virtual prototyping
subject: navigation
subject: robot-surgery
subject: video games
subject: 0

description: Vision-based markerless hand tracking has many applications, for instance in virtual prototyping, navigation in virtual environments, tele- and robot-surgery and video games. It is a very challenging task, due to the real-time requirements, 26 degrees-of-freedom, high appearance variability, and frequent self-occlusions. Because of that, and because of the many desirable applications, it has received increasing attention in the computer vision community of the past years. A lot of approaches have been proposed to (partially) solve the problem, but no system has been presented yet that can solve the full-DOF hand pose estimation problem robustly in real-time. The purpose of this article is to present an overview of the approaches that have been presented so far and where future research of hand tracking probably will go. First, we will explain the challenges in more detail. Second, we will classify the approaches; third, we will describe the most important approaches, and finally we will show the future directions and give a short overview of our current work.
การคิดริเริ่มการเปลี่ยนแปลงของผู้นำ: ปัจจัยความสำเร็จของการใช้ภาวะผู้นำในการพัฒนานวัตกรรมทางสังคมเพื่อให้เกิดชุมชนตัวอย่าง
Creators: name: กิตตินันท์ เครือแพทย์
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: การให้ความสำคัญกับคนในชุมชน
การให้กระบวนการคิดแก่คนในชุมชน
การให้คนในชุมชนเห็นการลงมือทำของผู้นำ
ปัจจัยความสำเร็จของการใช้ภาวะผู้นำ

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 409-433
A note on weighted homogeneous Siciak-Zaharyuta extremal functions
Creators: name: Drnovsek, Barbara Drinovec
name: Sigurdsson, Ragnar
Publisher: name: arXiv
Year: 2015
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We prove that for any given upper semicontinuous function $φ$ on an open subset $E$ of $\mathbb C^n\setminus\{0\}$, such that the complex cone generated by $E$ minus the origin is connected, the homogeneous Siciak-Zaharyuta function with the weight $φ$ on $E$, can be represented as an envelope of a disc functional.
อรรถปริวรรต กระบวนการถอดบทเรียนกิจกรรมนักศึกษา ของผู้นำนักศึกษาคณะวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตปัตตานี
Creators: name: อับดุลเลาะ เจ๊ะหลง
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: การถอดบทเรียน
กิจกรรมนักศึกษา
ผู้นำนักศึกษา
มหาวิทยาลัยสงขลานครินทร์

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 434-452
Abundant Intergenic TAACTGA Direct Repeats and Putative Alternate RNA Polymerase β′ Subunits in Marine Beggiatoaceae Genomes: Possible Regulatory Roles and Origins
Creators: name: MacGregor, Barbara J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: The genome sequences of several giant marine sulfur-oxidizing bacteria present evidence of a possible post-transcriptional regulatory network that may have been transmitted to or from two distantly related bacteria lineages. The draft genome of a Cand. “Maribeggiatoa” filament from the Guaymas Basin (Gulf of California, Mexico) seafloor contains 169 sets of TAACTGA direct repeats and one indirect repeat, with two to six copies per set. Related heptamers are rarely or never found as direct repeats. TAACTGA direct repeats are also found in some other Beggiatoaceae, Thiocystis violascens, a range of Cyanobacteria, and five Bacteroidetes. This phylogenetic distribution suggests they may have been transmitted horizontally, but no mechanism is evident. There is no correlation between total TAACTGA occurrences and repeats per genome. In most species the repeat units are relatively short, but longer arrays of up to 43 copies are found in several Bacteroidetes and Cyanobacteria. The majority of TAACTGA repeats in the Cand. “Maribeggiatoa” Orange Guaymas (BOGUAY) genome are within several nucleotides upstream of a putative start codon, suggesting they may be binding sites for a post-transcriptional regulator. Candidates include members of the ribosomal protein S1, Csp (cold shock protein), and Csr (carbon storage regulator) families. No pattern was evident in the predicted functions of the open reading frames (ORFs) downstream of repeats, but some encode presumably essential products such as ribosomal proteins. Among these is an ORF encoding a possible alternate or modified RNA polymerase beta prime subunit, predicted to have the expected subunit interaction domains but lacking most catalytic residues. A similar ORF was found in the Thioploca ingrica draft genome, but in no others. In both species they are immediately upstream of putative sensor kinase genes with nearly identical domain structures. In the marine Beggiatoaceae, a role for the TAACTGA repeats in translational regulation is suggested. More speculatively, the putative alternate RNA polymerase subunit could be a negative transcriptional regulator.
การเมืองวัฒนธรรมของ “อุดมการณ์ชาติพันธุ์ไทย”: ความเป็นไทยที่ (เคย) กดทับ “อาหารเจ๊ก” “อาหารลาว”
Creators: name: อาสา คำภา
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2021
Subjects: การเมืองวัฒนธรรม
อุดมการณ์ชาติพันธุ์ไทย
อาหารจีน
อาหารลาว/อาหารอีสาน

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 21, 2, 453-471