cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Controlling porosity and pore size distribution in green ceramics bodies via freeze-casting method
Creators: name: Donchev, Danail
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2005
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in dt. Sprache
subject: 666.04

description: Eine interessante aber noch nicht gut entwickelnden Technik für die Herstellung von keramischen Grünkörpern ist das Freeze-casting Verfahren, das auf der Phasentrenung bei wassergehaltigen Schlickern durch Ausfrieren basiert. Bei Anwendung des Freeze-casting Verfahrens ist es möglich hochporöse keramische Materialien mit ganz genau bestimmter poröser Struktur, komplexer Porengeometrie und auch genau bestimmter Porösität herzustellen. Die Porenstructur stellt die negative Form der Eiskristalle und deren Morphologie dar. Das Ziel dieser Arbeit ist es die Grundfaktoren, die für die Evolution der Mikrostruktur während des Friervorganges zu bestimmen. Die Keimbildung und das Eiskristallwachstum werden als Fundamentalprozess für die Kontrolle der Mikrostrukturparameter betrachtet. In Abhängigkeit von den Grundschlickereigenschaften und den Gefrierbedingungen, können die Porösitätscharakteristiken in großen Bereichen variiert werden.
description: One thriving and simple technique to produce green ceramic bodies is the Freeze casting technology, which is based on phase separation of water based ceramic slurries through freezing. By using Freeze-casting it is possible to obtain highly porous materials with tailor-made pore structure, pores complex geometry and explicit porosity as well. The pore structure is the negative image of the ice crystals size and morphology. The aim of this work is to evaluate the main factors which are responsible for the evolution of the microstructure during freezing. Nucleation and growth of the ice crystals are considered as fundamental processes to control the micro structural parameters. Depending on the properties of the original slurries and on the freezing conditions the porosity characteristics can be varied in a wide range. It is then of particular importance to control the number of nuclei and to adjust the effective temperature gradients in order to prepare ceramic bodies with the intended micro structural parameters. This is shown by experimental data. In this paper the basics of ice crystallization and pore formation are discussed.
Conditioning super-Brownian motion on its boundary statistics, and fragmentation
Creators: name: Salisbury, Thomas S.
name: Sezer, A. Deniz
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We condition super-Brownian motion on "boundary statistics" of the exit measure $X_D$ from a bounded domain $D$. These are random variables defined on an auxiliary probability space generated by sampling from the exit measure $X_D$. Two particular examples are: conditioning on a Poisson random measure with intensity $βX_D$ and conditioning on $X_D$ itself. We find the conditional laws as $h$-transforms of the original SBM law using Dynkin's formulation of $X$-harmonic functions. We give explicit expression for the (extended) $X$-harmonic functions considered. We also obtain explicit constructions of these conditional laws in terms of branching particle systems. For example, we give a fragmentation system description of the law of SBM conditioned on $X_D=ν$, in terms of a particle system, called the backbone. Each particle in the backbone is labeled by a measure $\tildeν$, representing its descendants' total contribution to the exit measure. The particle's spatial motion is an $h$-transform of Brownian motion, where $h$ depends on $\tildeν$. At the particle's death two new particles are born, and $\tildeν$ is passed to the newborns by fragmentation.
description: Published in at http://dx.doi.org/10.1214/12-AOP778 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The iron bar. Episodes in the modern history of prison physical culture, body typing and the ban on weight lifting in American correctional institutions.
Creators: name: Felkar, Victoria
Publisher: name: University of British Columbia
Year: 2015

description: The aim of this study is to explore the modern history of prison physical culture in order to better understand how perceptions of the muscular criminal male body have influenced the construction of prison physical culture and opportunities for physical activity in American correctional institutions. My focus on the recent weight lifting ban in the United States is designed to appraise how criminological knowledge of the muscular criminal male body has influenced penal policy over time. Through a selection of specific historical episodes in prison physical culture from the late 18th century to current correctional practice I evaluate the complicated interplay between penology, criminology, somatotyping, politics, prison physical culture and the enactment of the legal ban on prison weight lifting in 1994. Working from a critical socio-historical perspective this study intends to add to the limited knowledge of prison physical culture, research on physical activity in correctional facilities and attitudes toward the corporeal experience of those confined to prison. My study has been guided by the following research questions: 1) how have historical perceptions of the muscular criminal body developed, and in turn, influenced penal policy over time? In particular, what have been the influences of body profiling and somatotyping on the role of inmate’s weight lifting in prisons?; 2) in light of this, how can we better understand the reasoning behind the enactment of the 1994 weight lifting ban placed on prison physical culture within the United States?; 3) what have been the effects of the weight lifting ban on contemporary prison physical culture? This study is an interdisciplinary project which utilizes qualitative methodologies in the collection and analysis of documents and resources from kinesiology, criminology, anthropometry, and penology. Critical discourse analysis framed by Gee (1999, 2006) and Foucauldian perspectives on discipline, punishment and power provide the framework for my analysis of prison physical culture over time and place.
Efficient Spherical Harmonic Transforms aimed at pseudo-spectral numerical simulations
Creators: name: Schaeffer, Nathanaël
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Mathematical Software (cs.MS)
subject: Numerical Analysis (math.NA)
subject: Performance (cs.PF)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper, we report on very efficient algorithms for the spherical harmonic transform (SHT). Explicitly vectorized variations of the algorithm based on the Gauss-Legendre quadrature are discussed and implemented in the SHTns library which includes scalar and vector transforms. The main breakthrough is to achieve very efficient on-the-fly computations of the Legendre associated functions, even for very high resolutions, by taking advantage of the specific properties of the SHT and the advanced capabilities of current and future computers. This allows us to simultaneously and significantly reduce memory usage and computation time of the SHT. We measure the performance and accuracy of our algorithms. Even though the complexity of the algorithms implemented in SHTns are in $O(N^3)$ (where N is the maximum harmonic degree of the transform), they perform much better than any third party implementation, including lower complexity algorithms, even for truncations as high as N=1023. SHTns is available at https://bitbucket.org/nschaeff/shtns as open source software.
description: 8 pages
Introduction to the Environmental Data Initiative (EDI)
Creators: name: Gries, Corinna
Publisher: name: Zenodo
Year: 2018
Subjects: data repository
open data
Ecological Metadata Language
metadata
environment
ecology

description: The Environmental Data Initiative enables the environmental science community to maximize knowledge development through the reusability of FAIR environmental data by providing curation services, training, and a robust and modern data repository.
Virtual cubulation of nonpositively curved graph manifolds
Creators: name: Liu, Yi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 57M05 (Primary) 20F65 (Secondary)

description: In this paper, we show that a nontrivial compact graph manifold is nonpositively curved if and only if its fundamental group virtually embeds into a right-angled Artin group. As a consequence, nonpositively curved graph manifolds have linear fundamental groups.
description: 31 pages, 2 figures, accepted for publication by the Journal of Topology
Hasse Principle for Simply Connected Groups over Function Fields of Surfaces
Creators: name: Hu, Yong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11E72, 11E57

description: Let $K$ be the function field of a $p$-adic curve, $G$ a semisimple simply connected group over $K$ and $X$ a $G$-torsor over $K$. A conjecture of Colliot-Thélène, Parimala and Suresh predicts that if for every discrete valuation $v$ of $K$, $X$ has a point over the completion $K_v$, then $X$ has a $K$-rational point. The main result of this paper is the proof of this conjecture for groups of some classical types. In particular, we prove the conjecture when $G$ is of one of the following types: (1) ${}^2A_n^*$, i.e. $G=\mathbf{SU}(h)$ is the special unitary group of some hermitian form $h$ over a pair $(D, τ)$, where $D$ is a central division algebra of square-free index over a quadratic extension $L$ of $K$ and $τ$ is an involution of the second kind on $D$ such that $L^τ=K$; (2) $B_n$, i.e., $G=\mathbf{Spin}(q)$ is the spinor group of quadratic form of odd dimension over $K$; (3) $D_n^*$, i.e., $G=\mathbf{Spin}(h)$ is the spinor group of a hermitian form $h$ over a quaternion $K$-algebra $D$ with an orthogonal involution. Our method actually yields a parallel local-global result over the fraction field of a 2-dimensional, henselian, excellent local domain with finite residue field, under suitable assumption on the residue characteristic.
description: 39 pages, final version. Accepted for publication in Journal of the Ramanujan Mathematical Society
Supplementary methods, tables, figures, and equations from Changes in invertebrate food web structure between high- and low-productivity environments are driven by intermediate but not top-predator diet shifts
Creators: name: Kuile, Ana Miller-ter
name: Apigo, Austen
name: Bui, An
name: Butner, Kirsten
name: Childress, Jasmine N.
name: Copeland, Stephanie
name: DiFiore, Bartholomew P.
name: Forbes, Elizabeth S.
name: Klope, Maggie
name: Motta, Carina I.
name: Orr, Devyn
name: Plummer, Katherine A.
name: Preston, Daniel L.
name: Young, Hillary S.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Predator–prey interactions shape ecosystem stability and are influenced by changes in ecosystem productivity. However, because multiple biotic and abiotic drivers shape the trophic responses of predators to productivity, we often observe patterns, but not mechanisms, by which productivity drives food web structure. One way to capture mechanisms shaping trophic responses is to quantify trophic interactions among multiple trophic groups and by using complementary metrics of trophic ecology. In this study, we combine two diet-tracing methods: diet DNA and stable isotopes, for two trophic groups (top predators and intermediate predators) in both low- and high-productivity habitats to elucidate where in the food chain trophic structure shifts in response to changes in underlying ecosystem productivity. We demonstrate that while top predators show increases in isotopic trophic position (δ15N) with productivity, neither their isotopic niche size nor their DNA diet composition changes. Conversely, intermediate predators show clear turnover in DNA diet composition towards a more predatory prey base in high-productivity habitats. Taking this multi-trophic approach highlights how predator identity shapes responses in predator–prey interactions across environments with different underlying productivity, building predictive power for understanding the outcomes of ongoing anthropogenic change.
On the critical ideals of graphs
Creators: name: Corrales, Hugo
name: Valencia, Carlos E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 13F20, 13P10, 05C50, 05E99

description: We introduce some determinantal ideals of the generalized Laplacian matrix associated to a digraph G, that we call critical ideals of G. Critical ideals generalize the critical group and the characteristic polynomials of the adjacency and Laplacian matrices of a digraph. The main results of this article are the determination of some minimal generator sets and the reduced Grobner basis for the critical ideals of the complete graphs, the cycles and the paths. Also, we establish a bound between the number of trivial critical ideals and the stability and clique numbers of a graph.
description: 23 pages. Some changes over the previous version. Accepted in Linear algebra and its Applications
Quantifying causal influences
Creators: name: Janzing, Dominik
name: Balduzzi, David
name: Grosse-Wentrup, Moritz
name: Schölkopf, Bernhard
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Many methods for causal inference generate directed acyclic graphs (DAGs) that formalize causal relations between $n$ variables. Given the joint distribution on all these variables, the DAG contains all information about how intervening on one variable changes the distribution of the other $n-1$ variables. However, quantifying the causal influence of one variable on another one remains a nontrivial question. Here we propose a set of natural, intuitive postulates that a measure of causal strength should satisfy. We then introduce a communication scenario, where edges in a DAG play the role of channels that can be locally corrupted by interventions. Causal strength is then the relative entropy distance between the old and the new distribution. Many other measures of causal strength have been proposed, including average causal effect, transfer entropy, directed information, and information flow. We explain how they fail to satisfy the postulates on simple DAGs of $\leq3$ nodes. Finally, we investigate the behavior of our measure on time-series, supporting our claims with experiments on simulated data.
description: Published in at http://dx.doi.org/10.1214/13-AOS1145 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
L' analisi filologica di una editio princeps (Tonfoni G., 2013 Storie di una autrice equilibrata)
come premessa critica di un avantesto distinto dal progetto di adattamento e di riduzione successiva
in Una autrice equilibrata
Creators: name: Tonfoni, Graziella
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: SECS-P/04 Storia del pensiero economico

description: L'autrice, che ritiene le sue prose italiane attuali essere monologhi teatralmente adattabili,
allontanandosi dai saggi del suo trentennium investigationis ( Tonfoni G. 1979-2011), con le più
recenti espressioni scientifiche contenute nelle sue trilogie e saggi ( Tonfoni G., 2012-2013), ha
proceduto, sempre nell'arco dell'anno 2013 a comporre una monografia narrativa, dal titolo Storie di
una autrice equilibrata.
Non ritiene più di dovere comporre recensioni esplicative, per assicurare la accuratezza di potenziali
edizioni complete, ma intende mantenere ecdotica traccia.
Opta per uno stile leggero, che lascia spazio al lirismo senza versi, componendo venti capitoli che
possono diventare nella interpretazione corretta di lettori attenti, uno stimolo efficace per derivarne
uno spartito in musica lirica. Si tratta infatti di una narrativa sublimata, che si materializza
provvisoriamente in una stilizzazione concettuale allo stato puro, romanzo del non spazio preciso,
della contemporaneità sincronica, nella estemporaneità assoluta.
Originariamente inteso come narrazione da leggere individualmente, per fare riflettere in silenzio.
Si tratta di una prosa lessicalmente tuttora assai densa seppur semplificata, secondo un modello di
stemperamento lessicale, distinto da ognuno dei suoi stili antecedenti, del tutto distante dalle scelte
retoriche precedenti. Ancora una volta, la protagonista è una 'lei scrittrice' concettualmente
modificata, massimamente astratta, con tratti e caratteristiche non riconducibili ad alcuna
autobiografia, con riferimenti non intuitivi. Si tratta di una opera a sé, che scorre su piste
concettuali, rendendosi lirica, in non luoghi, in non tempi, nell'era post-tecnologica. Le osservazioni
scientifiche, sono il risultato di una analisi storica e sociologica del presente rigorosa, estremamente
aderente al reale. Lo stile, ancora una volta, si rivela cangiante, con punteggiatura rutilante.
La versione adattata e ridotta per arrangiamenti editoriali successivi che la autrice ne sta derivando
per venire incontro alle esigenze della attuale editoria italiana avrà, come titolo semplificato il seguente: Una autrice equilibrata.
Charged Higgs Detection in the $τν$ Decay Mode at Future Linear Colliders
Creators: name: Hashemi, Majid
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Charged Higgs phenomenology and detection chance at future linear colliders through the production process $e^{-}e^{+} \ra H^{+}H^{-} \ra τ^{+}ντ\barν$ is studied. Both charged Higgs bosons are considered to decay to $τν$ and the hadronic decay of $τ$ leptons is analyzed taking into account spin and kinematics effects using a proper simulation of the $τ$ lepton decay. It is shown that within the MSSM framework, with \tanb = 10, a wide range of charged Higgs masses would have detectable signal beyond the $5σ$ statistical significance at linear colliders with $\sqrt{s} = 500$ and 1000 GeV.
description: 19 pages, 11 figures, 2 tables
Economia Saggistica e Spending Review: la riduzione letteraria in Una autrice equilibrata, 2013, come
modello operativo conclusivo di ricapitalizzazione autoriale e di alleggerimento autorevole in lingua italiana
Creators: name: Tonfoni, Graziella
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: SECS-P/04 Storia del pensiero economico

description: Nelle dinamiche editoriali attuali, volte al massimo risparmio, non si devono trascurare i meccanismi di
crescita collegati alle preziose professionalità sparse sul territorio, da recuperare, una per una, dato che per
secoli hanno garantito la alta qualità di stampa, quella che appunto conduce alla valorizzazione della lingua
e della cultura italiane. Promuovere una politica letteraria a chilometro zero, oggi significa designare un
Editor Magistralis capace di promuovere le riletture selettive dall'italiano contemporaneo, per lettori locali,
sensibili ed acculturati. In modo da permettere a chi sia stata autrice di innumerevoli prose, per decenni, e
che oggi, ancora una volta, riveste il ruolo di autrice-scienziata-editor-critica delle sue stesse pagine e chiose
di lasciare che siano gli stessi stampatori a volere ricapitalizzare sulle sue frasi, introducendovi un loro
effettivo supporto grafico, con un investimento da parte loro, preciso ed adeguato, per una ottimale
gestione delle future fascicolazioni. Lasciare quindi il proprio ruolo, da parte di chi come critica e
fabbricatrice di commenti corretti già da tempo c'è, significa potere salvare un patrimonio di centinaia di
paragrafi, concepiti e composti negli anni 2012- 2013 dall'autrice, da una perdita progressiva di valore
dovuta al perdurare di spaziature interrotte e di inesattezze grafiche comparse nelle videate precedenti.
Le localizzazioni multiple, le evoluzioni complesse, le dinamiche sincroniche e diacroniche della ricerca
interdisciplinare avanzata, e delle relative pubblicazioni, di questa autrice fanno sì che le periodizzazioni
distinte,risultino assolutamente indispensabili, per non dare luogo a fraintendimenti.
Non è sempre facile, per chi non conosca l' iter complesso di questa scienziata, comprendere la rilevanza di
ognuna delle fasi, accettando questo stile e modo di esprimersi. Questa narratività paradossale, concede di
presentare in modo assai sereno e bilanciato, privo di ogni emotività negativa, i risultati delle attuali
elaborazioni scientifiche, di questa scienziata, che si muove sicuramente sola, ben lontana dai pareri mainstream.
Bergson e la filosofia tedesca. 1907-1932
Creators: name: Zanfi, Caterina
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: M-FIL/01 Filosofia teoretica
M-FIL/03 Filosofia morale
M-FIL/06 Storia della filosofia

description: Questo saggio racconta una storia in gran parte dimenticata: quella dei rapporti di Bergson con la filosofia tedesca del suo tempo. Da L’evoluzione creatrice (1907) a Le due fonti della morale e della religione (1932) Bergson ridefinisce profondamente la propria filosofia, arricchendola di nuovi temi antropologici nei quali sono riconoscibili gli echi del dibattito tedesco sulla filosofia della vita. Attraverso l’analisi delle polemiche «tedesche» che in quegli anni riguardarono o coinvolsero Bergson, viene qui studiata non soltanto la ricezione dell’opera bergsoniana in Germania ma anche l’impatto durevole di questo intenso dialogo, sia sulla filosofia del pensatore francese (Le due fonti) che su quella di autori del calibro di Eucken, Simmel, Driesch, Windelband e Scheler. Le quattro tappe in cui il libro articola questo incontro filosofico (corrispondenti alle città di Jena, Berlino, Heidelberg e Gottinga) ci consegnano un profilo nuovo del pensiero bergsoniano, che si dimostra perfettamente all’altezza del dibattito contemporaneo sui temi brucianti della tecnica, della storia e della guerra.
Additional file 1 of Association between sarcopenia and levels of growth hormone and insulin-like growth factor-1 in the elderly
Creators: name: Bian, Ailin
name: Ma, Yue
name: Zhou, Xinzi
name: Guo, Ying
name: Wang, Wenyi
name: Zhang, Yiran
name: Wang, Xiaofei
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Chemical Sciences not elsewhere classified

description: Additional file 1: Table S1. Subgroup analysis of the sarcopenic group >80 years of age.
From blockade to transparency: controllable photon transmission through a circuit QED system
Creators: name: Liu, Yu-xi
name: Xu, Xun-Wei
name: Miranowicz, Adam
name: Nori, Franco
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A strong photon-photon nonlinear interaction is a necessary condition for photon blockade. Moreover, this nonlinearity can also result a bistable behavior in the cavity field. We analyze the relation between detecting field and photon blockade in a superconducting circuit QED system, and show that photon blockade cannot occur when the detecting field is in the bistable regime. This photon blockade is the microwave-photonics analog of the Coulomb blockade. We further demonstrate that the photon transmission through such system can be controlled (from photon blockade to transparency) by the detecting field. Numerical calculations show that our proposal is experimentally realizable with current technology.
description: 7 papes, 5 figures
Novel disordering mechanism in ferromagnetic systems with competing interactions
Creators: name: Andresen, Juan Carlos
name: Thomas, Creighton K.
name: Katzgraber, Helmut G.
name: Schechter, Moshe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Ferromagnetic Ising systems with competing interactions are considered in the presence of a random field. We find that in three space dimensions the ferromagnetic phase is disordered by a random field which is considerably smaller than the typical interaction strength between the spins. This is the result of a novel disordering mechanism triggered by an underlying spin-glass phase. Calculations for the specific case of the long-range dipolar LiHo_xY_{1-x}F_4 compound suggest that the above mechanism is responsible for the peculiar dependence of the critical temperature on the strength of the random field and the broadening of the susceptibility peaks as temperature is decreased, as found in recent experiments by Silevitch et al. [Nature (London) 448, 567 (2007)]. Our results thus emphasize the need to go beyond the standard Imry-Ma argument when studying general random-field systems.
description: 4+2 pages, 3 figures
Looking past the present waste : path dependencies in municipal solid waste management in the US and European Union
Creators: name: Davis, Ryan
Publisher: name: University of British Columbia
Year: 2014

description: Incineration of municipal solid waste practiced in Europe has been noted as a best practice, and if not for NIMBYism, it is one that the US could adopt more broadly. At present waste-to-energy technologies, such as incineration, are used to manage 24% of municipal solid waste generated per year in the EU, while the US incineration is used to manage slightly under 12% of municipal solid waste per year. Additionally, incineration in the EU has increased over the past 20 years whereas incineration in the US has been on a lingering decline over this same time period. However, the use of incineration was once greater in the US than it is today in the EU. This study analyzed the reasons for this divergence in incineration use through investigation of historical events beginning in the early 1800s in both regions. Identification and analysis of key drivers and critical junctures in the US and Europe are compared. Over time, these events created path dependencies which explain the evolution of municipal solid waste management in the US and Europe. Particularly important path dependent drivers of this evolution include local control, availability of funds, and availability of resources. The historical analysis indicates that European municipalities having a long history of local control, the financial capacity to fund infrastructure and service projects, and an awareness of benefits gained from waste-to-energy technology have resulted in the increased adoption of municipal solid waste incineration. Conversely, US municipalities had local authority eroded and constrained over time, had a lack of financial capacity and assistance to fund municipal projects, and also had access to relatively abundant land and fossil fuel resources. The result was the decline of reliance on incineration in the US since 1960. An understanding of the importance of path dependencies in shaping current renewable technology adoption, such as waste-to-energy, can better inform other policy discussions including climate change.
On the Haar Shift representations of Calderón-Zygmund Operators
Creators: name: Orponen, Tuomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In connection with proving the A_2 conjecture in 2010, T. Hytönen obtained a representation of general Caldéron-Zygmund operators in terms of simpler operators known as Haar shifts. In this note, we prove that the result is sharp in the sense that Haar shift representations of Hytönen's type are only available for Calderón-Zygmund operators.
description: 7 pages. v2: typos corrected, to appear in Proc. AMS
Prädiktive und prognostische Faktoren beim metastasierten kolorektalen Karzinom unter Chemotherapie mit Bevazizumab und/oder Cetuximab - eine Betrachtung der prätherapeutischen Werte von Alkalischer Phosphatase, Carbohydrat-Antigen 19-9, Carcinoembryonalen Antigen und Laktatdehydrogenase
Creators: name: Cierpinski, Annemarie
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2016
Subjects: subject: 615

description: In dieser Arbeit wird die prognostische und /oder prädiktive Relevanz prätherapeutischer Werte (PTW) für das progressionsfreie Überleben (PFS) und das Gesamtüberleben (ÜL) unter Therapie mit Bevazizumab (BEV) und/oder Cetuximab (CET) bei metastasiertem kolorektalen Karzinom (mCRC) untersucht. Betrachtet wurden die PTW von Alkalischer Phosphatase (AP), Carbohydrat Antigen 19 9 (CA 19 9), Carcinoembryonales Antigen und Laktatdehydrogenase, sowie die Wahl des monoklonalen Antikörpers (mAb) insgesamt oder als Starttherapie. Keine der untersuchten Variablen war prädiktiv. Multivariat ließen sich AP und CA 19-9 als Prognosefaktoren für das ÜL bestätigen wobei ein niedriger PTW für eine gute Prognose spricht. Für das PFS zeigten sich CA 19 9 und die Wahl der mAb-Starttherapie mit BEV oder CET als prognostisch. Auch hier war ein niedrigerer PTW prognostisch von Vorteil, bezüglich der Starttherapie zeigte sich für die Wahl von BEV ein progressionsfreier Überlebensvorteil.
description: In this dissertation the prognostic and/or predictive valuesofpretherapeutic levels (PTL)for the overall survival (OS) and progressive free survival (PFS)in patients treated for metastatic colorectal cancer with bevacizumab (BEV) and/ or cetuximab were investigated. PTLof alkaline phophatase (AP), carbohydrate antigen 19 9 (CA 19 9), carcinoembryonic antigen and lactatedehydrogenase, as well as the administrationof certain monoclonal antibodies (mAb) altogether or as start therapy were examined. In a multivariate analysis PTL of AP and CA 19-9 were found to be prognostic for OS, whereupon a low PTL militates for a better OS. Forthe PFS, CA19-9 and the first givenmAbproved to be prognostic. A low PTL leads to a better PFS as does the administration of BEV as first mAb. None of the investigated variables were predictive.
Quantum teleportation with nonclassical correlated states in noninertial frames
Creators: name: Mehri-Dehnavi, Hossein
name: Rahimi, Robabeh
name: Mohammadzadeh, Hosein
name: Ebadi, Zahra
name: Mirza, Behrouz
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum teleportation is studied in noninertial frame, for fermionic case, when Alice and Bob share a general nonclassical correlated state. In noninertial frames two fidelities of teleportation are given. It is found that the average fidelity of teleportation from a separable and nonclassical correlated state is increasing with the amount of nonclassical correlation of the state. However, for any particular nonclassical correlated state, the fidelity of teleportation decreases by increasing the acceleration.
description: 10 pages, 3 figures, expanded version to appear in Quantum Inf. Process
Delivery of phyto-ceramides into the stratum corneum of the skin using nanocarriers - structural characterization, formulation and skin permeation studies
Creators: name: Tessema, Efrem Nigussu
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2018
Subjects: subject: 615

description: Ziel der Arbeit war der Transport pflanzlicher Ceramide (PhytoCER) in die Haut mittels Nanocarrier. Die PhytoCER verschiedener Pflanzen (Erbse, Ethiopischer Senf, Bohne und Hafer) wurden charakterisiert und die Hautpenetration von in Nanocarrier geladenen Hafer-PhytoCER in vitro und ex vivo untersucht.
description: The study aimed at delivering plant ceramides (PhytoCERs) into the skin using nanocarriers. The PhytoCERs from different plants (grass pea, Ethiopian mustard, haricot bean and oat) were characterized and the skin penetration of oat PhytoCERs loaded in nanocarriers was assessed in vitro as well as ex vivo.
The targum (1872:Mar.)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1872

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Non-abelian D5 brane dynamics
Creators: name: Chaurette, Laurent
Publisher: name: University of British Columbia
Year: 2014

description: The goal of this thesis is to analyse the non-abelian dual model to the defect probe D7-brane embedding in AdS₅ × S⁵[1]. The D7-brane picture can be thought of as a large number (N₅) of D5-branes growing a transverse fuzzy two-sphere, called BIon. This non-abelian solution improves our knowledge of the system by incorporating deviations in 1/N_{5}^{2} in the number of flavors. Such corrections are important from the point of view of the AdS/CFT correspondence as the CFT dual to the probe system is a candidate model for graphene, which possesses an emergent SU(4) symmetry. The main result of this work is the conductivity for the non-abelian D5 sytem. We fi nd that quantum Hall states have a non-integer transverse conductivity that depends on the number of flavor branes in the model. This deviation scales in 1/N_{5}^{2} in the number of flavor branes and vanishes in the large N₅ limit.
Supplementary methods, tables, figures, and equations from Changes in invertebrate food Web structure between high- and low-productivity environments are driven by intermediate but not top-predator diet shifts
Creators: name: Kuile, Ana Miller-ter
name: Apigo, Austen
name: Bui, An
name: Butner, Kirsten
name: Childress, Jasmine N.
name: Copeland, Stephanie
name: DiFiore, Bartholomew P.
name: Forbes, Elizabeth S.
name: Klope, Maggie
name: Motta, Carina I.
name: Orr, Devyn
name: Plummer, Katherine A.
name: Preston, Daniel L.
name: Young, Hillary S.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Predator–prey interactions shape ecosystem stability and are influenced by changes in ecosystem productivity. However, because multiple biotic and abiotic drivers shape the trophic responses of predators to productivity, we often observe patterns, but not mechanisms, by which productivity drives food Web structure. One way to capture mechanisms shaping trophic response is to quantify trophic interactions among multiple trophic groups and by using complementary metrics of trophic ecology. In this study, we combine two diet-tracing methods: diet DNA and stable isotopes, for two trophic groups (top predators and intermediate predators) in both low- and high-productivity habitats to elucidate where in the food chain trophic structure shifts in response to changes in underlying ecosystem productivity. We demonstrate that while top predators show increases in isotopic trophic position (δ15N) with productivity, neither their isotopic niche size nor their DNA diet composition changes. Conversely, intermediate predators show clear turnover in DNA diet composition towards a more predatory prey base in high-productivity habitats. Taking this multi-trophic approach highlights how predator identity shapes responses in predator–prey interactions across environments with different underlying productivity, building predictive power for understanding the outcomes of ongoing anthropogenic change.
Pfaffian representations of cubic surfaces
Creators: name: Tanturri, Fabio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14Q10 (Primary) 14J99 (Secondary)

description: Let K be a field of characteristic zero. We describe an algorithm which requires a homogeneous polynomial F of degree three in K[x_0,x_1,x_2,x_3] and a zero A of F in P^3_K and ensures a linear pfaffian representation of V(F) with entries in K[x_0,x_1,x_2,x_3], under mild assumptions on F and A. We use this result to give an explicit construction of (and to prove the existence of) a linear pfaffian representation of V(F), with entries in K'[x_0,x_1,x_2,x_3], being K' an algebraic extension of K of degree at most six. An explicit example of such a construction is given.
description: 17 pages. Expanded with some remarks. Published with minor corrections in Geom. Dedicata
Analytical approaches to physicochemical characterization of colloid drug carriers
Creators: name: Elsayed, Mustafa Mohammed Abdelaziz
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 615

description: Der Einsatz von kolloidalen Trägern bei der Arzneimittelverabreichung wächst seit Jahrzehnten. Auf dem Gebiet der Pharmazie schaffte das einen Bedarf nach besserem Verständnis von physikalischen und physiko-chemischen Eigenschaften solcher, oft komplexen, kolloidalen Systeme. Das Ziel dieser Arbeit ist dieses Verständnis zu fördern und neue, einfache Techniken zu etablieren, die für die Entwicklung und Charakterisierung von kolloidalen Arzneimittelträgern nützlich sind. Kapitel 1 enthält eine kurze Einführung. Im Kapitel 2 wird ein neuer Ansatz zur Analyse potenziometrischer Daten vorgeschlagen. Solche Daten werden beispielhaft an Suspensionen von arznei-mittelbeladenen Lipidvesikeln erklärt und illustriert. Unser Model berücksichtigt erstmalig korrekt die elektrostatische, Coulomb’sche Wechselwirkung, die gemeinsam mit der hydrophoben Wechselwirkung für Verbindung zwischen Arzneimittelmolekülen und den Trägern sorgt. Kapitel 3 befasst sich mit der Transformation von Vesikeln in die Mizellen, die aus Phosphatidylcholin–Cholat-Gemischen bestehen, und zwar unter besonderer Berücksichtigung von Krümmungseffekten in der Lipiddoppelschicht. Das resultierende Bild der Vesikel-Mizellen-Transformation ist reicher und komplexer als zuvor bekannt. Im Kapitel 4 untersuche ich die Möglichkeit der Verwendung von UV/Vis Spektroskopie zur Charakterisierung von submikroskopischen Arzneimittelträgern, wie zum Beispiel Lipidvesikeln. Meine Ergebnisse implizieren, dass die experimentellen Trübheitsspektren ausreichende Information enthalten, um daraus schnelle, genaue und viskositätsunabhängige Charakteristika von submikroskopischen Teilchen ableiten zu können. Die fortschrittlichen analytischen Methoden, die im Rahmen dieser Arbeit entwickelt und untersucht wurden, eignen sich gut für die Anwendung in der pharmazeutischen Forschung und in der Qualitätskontrolle aber auch zur Charakterisierung von kolloidalen Trägern im Allgemeinen.
Chain Rules for Smooth Min- and Max-Entropies
Creators: name: Vitanov, Alexander
name: Dupuis, Frederic
name: Tomamichel, Marco
name: Renner, Renato
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The chain rule for the Shannon and von Neumann entropy, which relates the total entropy of a system to the entropies of its parts, is of central importance to information theory. Here we consider the chain rule for the more general smooth min- and max-entropy, used in one-shot information theory. For these entropy measures, the chain rule no longer holds as an equality, but manifests itself as a set of inequalities that reduce to the chain rule for the von Neumann entropy in the i.i.d. case.
Super-Luminal Effects for Finsler Branes as a Way to Preserve the Paradigm of Relativity Theories
Creators: name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Using Finsler brane solutions [see details and methods in: S. Vacaru, Class. Quant. Grav. 28 (2011) 215001], we show that neutrinos may surpass the speed of light in vacuum which can be explained by trapping effects from gravity theories on eight dimensional (co) tangent bundles on Lorentzian manifolds to spacetimes in general and special relativity. In nonholonomic variables, the bulk gravity is described by Finsler modifications depending on velocity/ momentum coordinates. Possible super-luminal phenomena are determined by the width of locally anisotropic brane (spacetime) and induced by generating functions and integration functions and constants in coefficients of metrics and nonlinear connections. We conclude that Finsler brane gravity trapping mechanism may explain neutrino super-luminal effects and almost preserve the paradigm of Einstein relativity as the standard one for particle physics and gravity.
description: latex2e, 15 pages, v3, accepted to: Foundations of Physics 43 (2013)
Untersuchungen zu molekularen, strukturellen und biokatalytischen Aspekten des Vitamin B1-abhängigen Enzyms Transketolase A aus Escherichia coli
Creators: name: Asztalos, Peter
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2008
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in engl. Sprache
subject: 572.79229342

description: Ziel der präsentierten Arbeit war das Verständnis der Katalyse des Vitamin B1-abhängigen Enzyms Transketolase A aus Escherichia coli auf molekularer Ebene. Hierzu wurden molekularbiologische Methoden (ortsgerichtete Mutagenesen) zur Generierung von aktiven-Zentren-Varianten sowie zur Einführung der Sequenz eines C-terminalen His6-tags genutzt. Durch den Vergleich von durch steady-state- (Aktivitätstest, Intermediatanalyse) und pre-steady-state-Messungen (stopped-flow-Absorptionsspektroskopie, Intermediatanalyse) bestimmten enzymkinetischen Parametern konnte der Einfluß einzelner Aminosäureseitenketten auf die Katalyse untersucht werden. Die Röntgenkristallographie mit Substrat-soaking-Technik erlaubte die Kristallisation der enzymgebundenen kovalenten Donorintermediate von D-Xylulose-5-phosphat und D-Fructose-6-phosphat sowie des nicht-kovalenten Akzeptorsubstrat-Enzymkomplexes von D-Ribose-5-phosphat in der docking-site der Transketolase A. Der Einsatz von Cofaktor-Analoga gestattete die Untersuchung unterschiedlicher Ausprägungen von Banden im CD-Spektrum. Zudem ließ sich eine bisher für Transketolase nicht beschriebene Acetohydroxysäure-Synthase (AHAS)-ähnliche Carboligationsreaktion zeigen.
description: The aim of the work presented here was the understanding of catalysis of the vitamin B1-dependent enzyme transketolase A from Escherichia coli on a molecular level. In this concern methods of molecular biology (site directed mutagenesis) were used to generate active-site variants as well as for the introduction of a sequence for a C-terminal His6-tag. By comparison of steady-state (activity, analysis of covalent intermediates) as well as pre-steady-state investigations (stopped-flow absorbance, analysis of covalent intermediates) the influence of active-site residues on catalysis were examined. The application of X-ray crystallography with substrate-soaking technique allowed the crystallization of the enzyme-bound covalent donor intermediates of D-xylulose 5-phosphate and D-fructose 6-phosphate as well as the non-covalent acceptor-substrate-enzyme-complex of ribose 5-phosphate in the docking site of transketolase A. Coenzyme analogues were used to analyse different positions of bands observed in the CD spectra. Furthermore, a hitherto undescribed acetohydroxyacid synthase (AHAS)-like carboligation reaction was shown for the enzyme.
Migration of mandibular supernumerary premolar in association with multiple anomalies –A rarest case report with literature review
Creators: name: Nagaveni NB
Publisher: name: Zenodo
Year: 2023

description: Dental transmigration is an unusual dental anomaly involving tooth eruption phenomenon characterised by migrating of an unerupted tooth crossing the dental midline and transmigrating to the opposite side of the dental arch. This anomaly most commonly involves mandibular permanent canine. Supernumerary premolars are more commonly seen anomalies pertaining to tooth number and most of the time they remain impacted. Mandibular premolar migrating towards distal side of the arch is a rare finding and infrequent number of cases has been reported in the literature. However, migration of a supernumerary premolar distally is not reported till date. Therefore, the purpose of the present article is to report such a rarest case of mandibular supernumerary premolar which exhibited 'paramolar wanderung' phenomenon in association with occurrence of multiple anomalous supernumerary premolars both in the maxilla and mandibular arch along with severe root dilaceration which all were found in Indian male patient.
Biologisch wirksame Boswelliasäure-Derivate
Creators: name: Niesen, Anja
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2008
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in engl. Sprache
subject: 615.3

description: Weihrauch (Boswellia) dient schon lange als traditionelles Heilmittel, z.B. in der ayurvedischen Medizin Indiens. Zu den pharmakologisch wichtigen Inhaltsstoffen des Harzes zählen die Boswelliasäuren. Diese hemmen selektiv das Enzym 5-Lipoxygenase, das Schlüsselenzym der Leukotrien-Biosynthese, und sind damit verantwortlich für die antiinflammatorischen Eigenschaften des Weihrauchs. Darüberhinaus sind Boswelliasäuren für ihre antiproliferative Wirkung auf Tumorzellen bekannt. Dabei spielen die Auslösung von Apoptose und die Inhibierung der menschlichen Topoisomerasen I und II eine wichtige Rolle. Diese bisherigen Erkenntnisse führten zu dem grundlegenden Ziel, eine effiziente Methode zur Isolierung großer Mengen an 3-Acetyl-11-keto-β-boswelliasäure zu entwickeln. Darüberhinaus wurden Derivatisierungen am Grundgerüst durchgeführt und deren struktureller Einfluss auf die Wirksamkeit der Derivate untersucht. Für die synthetisierten Verbindungen konnte die inhibitorische Wirkung auf die Lipoxygenase mit Hilfe des FOX-2-Tests gezeigt werden. Die zytotoxische Wirkung ausgewählter Derivate wurde mittels Sulforhodamin B-Assay an verschiedenen Krebszelllininen nachgewiesen.
description: For centuries, frankincense (Boswellia) has been used as a traditional drug in the Ayurvedic medicine of India. Boswellic acids belong to the pharmacological important components of the resin. They selectively inhibit the enzyme 5-lipoxygenase - a key enzyme in the leucotriene-biosynthesis - which is responsible for the anti-inflammatory properties of the frankincense. Furthermore, boswellic acids have an anti-proliferative effect on tumor cells. The regression in tumor growth is provoked by the induction of apoptosis and the inhibition of the human topoisomerase I and II. Due to the promising results an efficient method for the isolation of a sufficient amount of the 3-acetyl-11-keto-β-boswellic acid. In addition, several derivatizations of the skeletal structure were performed and their influence on the pharmacological properties was investigated. The inhibitory effect for the lipoxygenase was determined using a FOX-2-assay and the cytotoxicity of selected derivates was examined for several cancer cell lines with the sulforhodamine B-assay.