cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Magnetic Field Tuning of Parallel Spin Stripe Order and Fluctuations near the Pseudogap Quantum Critical Point in La$_{1.36}$Nd$_{0.4}$Sr$_{0.24}$CuO$_4$
Creators: name: Ma, Qianli
name: Smith, Evan M.
name: Cronkwright, Zachary W.
name: Dragomir, Mirela
name: Mitchell, Gabrielle
name: Winn, Barry W.
name: Williams, Travis J.
name: Gaulin, Bruce D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A quantum critical point in the single layer, hole-doped cuprate system La$_{1.6-x}$Nd$_{0.4}$Sr$_x$CuO$_4$ (Nd-LSCO), near $x$ = 0.23 has been proposed as an organizing principle for understanding high temperature superconductivity. Our earlier neutron diffraction work on Nd-LSCO at optimal and high doping revealed static parallel spin stripes to exist out to the QCP and slightly beyond, at $x$ = 0.24 and 0.26. We examine more closely the parallel spin stripe order parameter in Nd-LSCO in both zero magnetic field and fields up to 8 T for H // c in these single crystals. In contrast to earlier studies at lower doping, we observe that H //c in excess of $\sim$ 2.5 T eliminates the incommensurate quasi-Bragg peaks associated with parallel spin stripes. But this elastic scattering is not destroyed by the field; rather it is transferred to commensurate {\textbf{Q} = 0} Bragg positions, implying that the spins participating in the spin stripes have been polarized. Inelastic neutron scattering measurements at high fields show an increase in the low energy, parallel spin stripe fluctuations and evidence for a spin gap, $Δ_{spin}$= 3 $\pm$ 0.5 meV for Nd-LSCO with $x$ = 0.24. This is shown to be consistent with spin gap measurements as a function of superconducting T$_C$ over five different families of cuprate superconductors, which follow the approximate linear relation, $Δ_{spin}$ = 3.5 k$_B$T$_C$.
Analysis Of Risk Management Practices In Construction Companies: Focusing On Yotek Construction, Flintstone Engineering And Akir Construction
Creators: name: Yirga, Getachew
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Critical reviews of the existing theory and practice of Risk Management within the construction industry particularly in Ethiopia and the world at large suggest that risk management, as one of the nine knowledge areas of the project management, is not only underutilized but also, generally, not well understood. These are simply manifested in the results shown on the ground that construction projects facing time and cost overruns besides to their inferior quality products. The research findings which have been summarized and presented in this study were carried out based on three local construction companies" named Yotek Construction, Flintstone Engineering and Akir Construction with the objective of analyzing status of RM practices in construction companies in general and specifically how the risk planning, identification, analyzing, responding and monitoring and controlling experiences or practices. To do so, survey questionnaires were distributed to selected experts particularly related to the risk management practices area like planning, designing and /or executions / implementation levels to see deep in to the detail practices. The findings showed that with some ups and downs, there were some hints of risk management practices specifically, risk management is recognized as a very important input, formal procedures to RM are practiced and RM is a continuous process but some practices still need improvements like team members should participate in risk identification, mainly there are no responsible body to handle and coordinate risks and subjective methods (such as judgments based on experience) rather than more sophisticated methods (such as mathematical techniques) are used to make decisions that affect the key project parameters. There are more or less risk management planning practices but not all team members are invited to participate and there are no defined and well-developed strategies to respond to risks. Risk monitoring and controlling are not done in compliance with the accepted standards and procedures which make risks either worse or might make difficulty to overcome them. In conclusion, RM is not yet fully and maturely practiced but partially and hesitantly. Recommendations are RM management should be in compliance with the standards, there should be a well-developed strategy and responsible body to handle risks.
Electron Emission Projection Imager
Creators: name: Baturin, Stanislav S.
name: Baryshev, Sergey V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A new projection type imaging system is presented. The system can directly image the field emission site distribution on a cathode surface by making use of anode screens in the standard parallel plate configuration. The lateral spatial resolution of the imager is between 1 and 10 μm. The imaging sensitivity to the field emission current can be better than the current sensitivity of a typical electrometer, i.e. less than 1 nA.
Fiducia mercantil
Creators: name: Merlano Oliver, Miriam
Publisher: name: Universidad de Cartagena
Year: 1984
Subjects: Compañías fiduciarias - Colombia
Fiducias - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1984
description: Importancia que tiene en estos momentos la fiduciaria mercantil, ya que su desarrollo es eminentemente didáctico, por cuanto estima que para un mayor conocimiento de este, se tiene en cuenta diversos tópicos enfocados hacia una mira, como su tratamiento comercial, y pactos de fiduciarias sobre bienes.
DNA like$-$charge attraction and overcharging by divalent counterions in the presence of divalent co$-$ions
Creators: name: Duc, Nguyen Viet
name: Nguyen, Toan T.
name: Carloni, Paolo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Strongly correlated electrostatics of DNA systems has drawn the interest of many groups, especially the condensation and overcharging of DNA by multivalent counterions. By adding counterions of different valencies and shapes, one can enhance or reduce DNA overcharging. In this papers, we focus on the effect of multivalent co-ions, specifically divalent co-ions such as SO$_4^{2-}$. A computational experiment of DNA condensation using Monte$-$Carlo simulation in grand canonical ensemble is carried out where DNA system is in equilibrium with a bulk solution containing a mixture of salt of different valency of co-ions. Compared to system with purely monovalent co-ions, the influence of divalent co-ions shows up in multiple aspects. Divalent co-ions lead to an increase of monovalent salt in the DNA condensate. Because monovalent salts mostly participate in linear screening of electrostatic interactions in the system, more monovalent salt molecules enter the condensate leads to screening out of short-range DNA$-$DNA like charge attraction and weaker DNA condensation free energy. The overcharging of DNA by multivalent counterions is also reduced in the presence of divalent co$-$ions. Strong repulsions between DNA and divalent co-ions and among divalent co-ions themselves leads to a {\em depletion} of negative ions near DNA surface as compared to the case without divalent co-ions. At large distance, the DNA$-$DNA repulsive interaction is stronger in the presence of divalent co$-$ions, suggesting that divalent co$-$ions role is not only that of simple stronger linear screening.
description: 10 pages, 6 figures
title: An additional hypothesis to the origin of perinecrotic niches in glioblastoma
Creators: name: Schiffer, Davide
name: Annovazzi, Laura
name: Mellai, Marta
name: Mazzucco, Marta
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Microenvironment exerts its effects at the most on perivascular and perinecrotic niches where glioblastoma stem cells (GSCs) are believed to be located in glioblastoma multiforme (GBM). The histological definition of the niches is not univocal. The perinecrotic ones develop around circumscribed[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Cartagena de Indias: Diagnostico de la Ciudad Amurallada, base para una propuesta de conversión en un gran centro comercial abierto Subsector bares y discotecas
Creators: name: Díaz Granados Reina, Sergio
name: González Molina, Sebastián
Publisher: name: Universidad de Cartagena
Year: 2011
Subjects: Mercadeo
Investigacion de mercados
Consumidores

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2011
description: Cartagena de Indias, se ha caracterizado por ser una ciudad líder en turismo en Colombia, en especial su centro amurallado, conocido también como centro histórico, el cual es considerado por la UNESCO como patrimonio Histórico, Arquitectónico y Cultural de la humanidad (1984), características que la hacen muy atrayente para extranjeros y nacionales quienes día a día llegan a esta ciudad con deseos de conocerla, recorrerla y pasar gratos momentos de descanso en sus calles, hoteles, restaurantes, discotecas, y todos los sitios que la ciudad ofrece. Desde este punto de vista, el centro amurallado es parte primordial dentro de la estructura turística y comercial de Cartagena, y el hecho de encontrarse ubicado dentro de este área, representa para los negocios una vitrina muy importante para vender su imagen, y recrea en los clientes un impacto del lugar, la ubicación del mismo y la comodidad de encontrarlo fácilmente dentro de uno de los sitios más famosos de Colombia. Resultado de ello, en parte, inversionistas de todo el país, en especial de almacenes de grandes marcas reconocidas y de diferentes sectores de la economía (vestuario, restaurantes, hoteles, etc.), están abriendo sedes en Cartagena, específicamente en el sector del centro histórico, convirtiéndolo en un gran centro de compras de alto nivel que atrae al turista y del mismo modo a los inversionistas extranjeros dichas personas quienes están viendo la posibilidad de invertir en Cartagena y de establecer negocios a largo plazo en esta ciudad, lo cual en muchas ocasiones está causando un desplazamiento del comerciante local debido a las tendencias de modernización e internacionalización de este área.
Nearest-Neighbor Interaction Systems in the Tensor-Train Format
Creators: name: Gelß, Patrick
name: Klus, Stefan
name: Matera, Sebastian
name: Schütte, Christof
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 15A69, 34C15, 60J27, 60K20, 80A30, 82C20

description: Low-rank tensor approximation approaches have become an important tool in the scientific computing community. The aim is to enable the simulation and analysis of high-dimensional problems which cannot be solved using conventional methods anymore due to the so-called curse of dimensionality. This requires techniques to handle linear operators defined on extremely large state spaces and to solve the resulting systems of linear equations or eigenvalue problems. In this paper, we present a systematic tensor-train decomposition for nearest-neighbor interaction systems which is applicable to a host of different problems. With the aid of this decomposition, it is possible to reduce the memory consumption as well as the computational costs significantly. Furthermore, it can be shown that in some cases the rank of the tensor decomposition does not depend on the network size. The format is thus feasible even for high-dimensional systems. We will illustrate the results with several guiding examples such as the Ising model, a system of coupled oscillators, and a CO oxidation model.
The Effect of Leadership Style on Organizational Performance In Case Of Addis Ababa Police Commission
Creators: name: Dube, Girma
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The main objective of the study is to examine the effects of leadership style on organizational performance at Addis Ababa Police Commission. The focus was on three major leadership styles Autocratic, Democratic and Laissez-faire leadership style. The research design was descriptive and explanatory; the research used both qualitative and quantitative approach. The sampling method was stratified and simple random sampling technique. A sample of three hundred ninety two was selected out of the total population. Both primary and secondary sources have been conducted. The primary source has been done using the quantitative approach, with the help of survey instrument, based on a survey questionnaire. The secondary source has been done through the review of previously established literature for achieving the research objectives. The descriptive statistics result shows that the practice of leadership style at the Addis Ababa Police Commission is democratic leadership. The result of the regression analysis indicated that effective kind of leadership style has a positive relationship with organizational performance that shows organizational performance is predicted and explained by the three type of leadership style. The researcher suggested that since the effect of leadership style has a significant effect on organizational performance, it is recommended that Addis Ababa Police Commission management should provide various training programs to the leaders of Addis Ababa Police Commission in order to create a higher level of organizational performance
A Massive Star is Born: How Feedback from Stellar Winds, Radiation Pressure, and Collimated Outflows Limits Accretion onto Massive Stars
Creators: name: Rosen, Anna L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive protostars attain high luminosities as they are actively accreting and the radiation pressure exerted on the gas in the star's atmosphere may launch isotropic high-velocity winds. These winds will collide with the surrounding gas producing shock-heated ($T\sim 10^7$ K) tenuous gas that adiabatically expands and pushes on the dense gas that may otherwise be accreted. We present a suite of 3D radiation-magnetohydrodynamic simulations of the collapse of massive prestellar cores and include radiative feedback from the stellar and dust-reprocessed radiation fields, collimated outflows, and, for the first time, isotropic stellar winds to model how these processes affect the formation of massive stars. We find that winds are initially launched when the massive protostar is still accreting and its wind properties evolve as the protostar contracts to the main-sequence. Wind feedback drives asymmetric adiabatic wind bubbles that have a bipolar morphology because the dense circumstellar material pinches the expansion of the hot shock-heated gas. We term this the "wind tunnel effect." If the core is magnetized, wind feedback is less efficient at driving adiabatic wind bubbles initially because magnetic tension delays their growth. We find that wind feedback eventually quenches accretion onto $\sim$30 $\rm{M_{\rm \odot}}$ protostars that form from the collapse of the isolated cores simulated here. Hence, our results suggest that $\gtrsim$30 $\rm{M_{\rm \odot}}$ stars likely require larger-scale dynamical inflows from their host cloud to overcome wind feedback. Additionally, we discuss the implications of observing adiabatic wind bubbles with \textit{Chandra} while the massive protostars are still highly embedded.
description: 28 pages, 19 figures, 2 tables. Accepted by ApJ
The diffraction volume for square-shaped samples in X-ray diffraction with high spatial resolution
Creators: name: Chakrabarti, Prerana
name: Modregger, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: X-ray diffraction with high spatial resolution is a prerequisite for the characterization of (poly)-crystalline materials on micro- or nanoscopic scales. This can be achieved by utilizing a focused X-ray beam and scanning of the sample. However, due to the penetration of the X-rays into the material, the exact location of diffraction within the sample is ambiguous. Here, we utilize numerical simulations to compute the spatially resolved diffraction volume in order to investigate these ambiguities. We demonstrate that partial depth sensitivity can be achieved by rotating the sample.
description: 6 pages, 6 figures
Seguimientos a egresados de la Facultad de Odontología Universidad de Cartagena
Creators: name: Mendoza Suárez, José Luis
name: Miranda Pacheco, Liliana Patricia
Publisher: name: Universidad de Cartagena
Year: 2016
Subjects: Odontólogos
Odontología como profesión
Perfil laboral - Egresados Universidad de Cartagena
Tesis - Odontología

description: Tesis (Odontólogo). -- Universidad de Cartagena. Facultad de Odontología, 2016
description: La universidad de Cartagena establece las políticas institucionales de seguimiento a sus egresados para guiar la interacción, relaciones y el acercamiento con estos. la facultad de odontología de la universidad de Cartagena mantiene dentro de sus programas estudios encaminados al acompañamiento y a la inclusión, de todos sus profesionales a lo largo de los años.
Assessing The Practice Of Project Closure: Evidence From Water Supply And Sanitation Projects
Creators: name: Tilahun, Sahle
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: This study is about the case of the Water Supply & Sanitation projects enabled to validate that the closure phase is the most neglected among the four main phases of project management, which requires the attention of specially project team. The study realized that projects practiced only signing of Provisional & Final Acceptance Certificates using financer's format, handing over outputs & holding retention fund. At project closure phase, both contractual and administrative closures need to be performed respectively. The interview results justified the absence of standard project closure practices, such as detailed closure planning, no termination report (fig 4.1.1), use of standard templates, draw & archive lessons, release of remaining resources, freeing or retaining project personnel, etc. To initiate the project closure, a closure report should first be created; followed by approval of customer. Delay of closure created 17% dissatisfaction of beneficiaries. There is no awareness about the benefits of lessons to be drawn; stakeholders could not able to learn from the projects' success or failures. The study enhances awareness & knowledge; where 83% of the respondents did not have knowledge about each benefit & developing training course manual for internal use. It needs to encourage project stakeholders to get the necessary feedback timely, as the study revealed that 73% of respondents were neutral about contractual closure. Further study may be important on the significance of financial implication on delayed release of resources during closure and study on the practices of knowledge transfer level from past lessons to current similar projects.
Polynomial bounds for chromatic number VI. Adding a four-vertex path
Creators: name: Chudnovsky, Maria
name: Scott, Alex
name: Seymour, Paul
name: Spirkl, Sophie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A class of graphs is $χ$-bounded if there is a function $f$ such that every graph $G$ in the class has chromatic number at most $f(ω(G))$, where $ω(G)$ is the clique number of $G$; the class is polynomially $χ$-bounded if $f$ can be taken to be a polynomial. The Gyárfás-Sumner conjecture asserts that, for every forest $H$, the class of $H$-free graphs (graphs with no induced copy of $H$) is $χ$-bounded. Let us say a forest $H$ is good if it satisfies the stronger property that the class of $H$-free graphs is polynomially $χ$-bounded. Very few forests are known to be good: for example, it is open for the five-vertex path. Indeed, it is not even known that if every component of a forest $H$ is good then $H$ is good, and in particular, it was not known that the disjoint union of two four-vertex paths is good. Here we show the latter, and more generally, that if $H$ is good then so is the disjoint union of $H$ and a four-vertex path. We also prove a more general result: if every component of $H_1$ is good, and $H_2$ is any path (or broom) then the class of graphs that are both $H_1$-free and $H_2$-free is polynomially $χ$-bounded.
description: Accepted manuscript; see DOI for journal version
Tensor Electromagnetism and Emergent Elasticity in Jammed Solids
Creators: name: Nampoothiri, Jishnu N.
name: D'Eon, Michael
name: Ramola, Kabir
name: Chakraborty, Bulbul
name: Bhattacharjee, Subhro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The theory of mechanical response and stress transmission in disordered, jammed solids poses several open questions of how non-periodic networks -- apparently indistinguishable from a snapshot of a fluid -- sustain shear. We present a stress-only theory of emergent elasticity for a non-thermal amorphous assembly of grains in a jammed solid, where each grain is subjected to mechanical constraints of force and torque balance. These grain-level constraints lead to the Gauss's law of an emergent $U(1)$ tensor electromagnetism, which then accounts for the mechanical response of such solids. This formulation of amorphous elasticity has several immediate consequences. The mechanical response maps exactly to the static, dielectric response of this tensorial electromagnetism with the polarizability of the medium mapping to emergent elastic moduli. External forces act as vector electric charges whereas the tensorial magnetic fields are sourced by momentum density. The dynamics in the electric and magnetic sectors, naturally translate into the dynamics of the rigid jammed network and ballistic particle motion respectively. The theoretical predictions for both stress-stress correlations and responses are borne out by the results of numerical simulations of frictionless granular packings in the static limit of the theory in both 2D and 3D.
description: 26 pages, 12 figures
Kinder zeichnen zu Textaufgaben – Vorstellung eines Instruments zur Analyse graphischer Darstellungen
Creators: name: Ott, Barbara
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Darstellungen sind in der Mathematik und im Mathematikunterricht wesentlich für Erkenntnisprozesse (vgl. Dörfler 2006, Bruner 1966). Im Beitrag werden Darstellungen als Inskriptionen verstanden, d. h. als „signs, that are materially embodied in some medium” (Roth & McGinn 1998, 37). Auch ikonische Darstellungen (Peirce 1986, 205ff) sind in der Mathematik von Bedeutung. Im Sachrechnen spielen sie u. a. als graphische Bearbeitungshilfen eine Rolle, die die Lernenden bei der Mathematisierung der Sachaufgaben unterstützen sollen (vgl. Franke & Ruwisch 2010, 103ff). Hasemann (2006) hebt hervor, dass hierbei die Darstellung der mathematischen Beziehungen einer Aufgabe wesentlich sei, realistische Darstellungen trügen zur Problemlösung wenig bei. Kindern bereite die Strukturabbildung jedoch oft Schwierigkeiten (s. a. Franke & Ruwisch 2010, 103). Im Projekt wurden Schülerinnen und Schüler der Primarstufe aufgefordert, zu Textaufgaben zu zeichnen. Dabei ist zum einen von Interesse, inwieweit die den Textaufgaben inhärenten mathematischen Strukturen in graphischen Eigenproduktionen der Kinder wiedererkennbar sind, d. h. ob mathematische Strukturen abgebildet werden und welche Passung zwischen ihnen und den Strukturen der Textaufgabe besteht. Zum anderen wird der Abstraktionsgrad der Kinderzeichnungen untersucht. Auf Basis von rund 400 Schülerdokumenten wurde in einem iterativen Prozess zwischen Theorieausschärfung und Analyse mit den Verfahren des theoretischen Kodierens (Strauss & Corbin 1996) und der Qualitativen Inhaltsanalyse (Mayring 2010) ein Instrument forschungsbasiert entwickelt, das es ermöglicht, graphische Eigenproduktionen bezüglich der Strukturabbildung, der mathematischen Passung und des Abstraktionsgrads zu analysieren. Im Folgenden wird die theoretische Rahmung sowie die Operationalisierung des Analyseinstruments vorgestellt.
Engineering matter interactions using squeezed vacuum
Creators: name: Zeytinoglu, Sina
name: Imamoglu, Atac
name: Huber, Sebastian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Virtually all interactions that are relevant for atomic and condensed matter physics are mediated by quantum fluctuations of the electromagnetic field vacuum. Consequently, controlling the vacuum fluctuations can be used to engineer the strength and the range of interactions. Recent experiments have used this premise to demonstrate novel quantum phases or entangling gates by embedding electric dipoles in photonic cavities or waveguides, which modify the electromagnetic fluctuations. Here, we show theoretically that the enhanced fluctuations in the anti-squeezed quadrature of a squeezed vacuum state allows for engineering interactions between electric dipoles without the need for a photonic structure. Thus, the strength and range of the interactions can be engineered in a time-dependent way by changing the spatial profile of the squeezed vacuum in a travelling-wave geometry, which also allows the implementation of chiral dissipative interactions. Using experimentally realized squeezing parameters and including realistic losses, we predict single atom cooperativities $C$ of up to 10 for the squeezed vacuum enhanced interactions.
Synthesis, preclinical evaluation and antidepressant activity of 5-substituted phenyl-3-(thiophen-2-yl)-4, 5-dihydro-1H-pyrazole-1-carbothioamides
Creators: name: Mathew, Bijo
name: Suresh, Jerad
name: Anbazhagan, S.
Publisher: name: Technische Universität Dortmund
Year: 2014
Subjects: subject: 2-Acetyl thiophene
subject: Pyrazoline
subject: Total polar surface area
subject: Force swimming test
subject: Neurotoxicity
subject: 610

description: A series of phenyl-3-(thiophen-2-yl)-4, 5-dihydro-1H-pyrazole-1-carbothioamides (TTa-TTg) were synthesized by the ring closure reaction of phenyl-1-(thiophen-2-yl) prop-2-en-1-ones with thiosemicarbazide in alcoholic basic medium. All the final derivatives were evaluated for their antidepressant and neurotoxicity screening. The structures of the compounds were characterized by IR, 1H NMR, 13C NMR, Mass and elemental analyses. Preclinical evaluation of the compounds were ascertained by in silico toxicity, blood-brain barrier and human oral absorption prediction. In this series, 5-(4-hydroxyphenyl)-3-(thiophen- 2-yl)-4,5-dihydro-1H-pyrazole-1 carbothioamide (TTg) reduced immobility time 61.17 and 62.05 % in both force swimming and tail suspension test respectively at 10 mg/kg dose level when compared to the standard Imipramine without influencing the baseline locomotion. Moreover it was observed that the titled scaffold possessing electron withdrawing chlorine atom in the 4th position of aromatic ring of the scaffold also showed good the antidepressant activity. In conclusion, the behavioural investigation revealed that thiophene based pyrazolines having a carbothioamide tail unit in the N1 position may be therapeutically useful as potential antidepressant medications.
description: EXCLI Journal ; Vol. 13, 2014
Electron spill-out effect on third-order optical nonlinearity of metallic nanostructure
Creators: name: Takeuchi, Takashi
name: Yabana, Kazuhiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Over the last three decades, plasmonics using metallic nanostructures has become central to nanophotonics research. Recently, its targets have been extended to nonlinear optical phenomena. In a nonlinear regime, quantum mechanical effects, as exemplified by electron spill-out on the surface of nanostructures, significantly influence the optical response. Quantum hydrodynamic theory (QHT) is a promising basis for the analysis of nonlinear optical responses involving such quantum mechanical effects. Herein, QHT was applied to calculate the third-order optical nonlinearity of a spherical metallic nanostructure. The results demonstrate how electron spill-out strongly affects plasmon resonance and third-order optical nonlinearity.
description: 29 pages, 6 figures
Effects of saw palmetto extracts on prostate gland function in the rat
Creators: name: Chua, Thiam
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Benign prostatic hyperplasia is associated with many urinary symptoms that can severely diminish quality of life and can lead to complications including urinary tract infections and obstructive nephropathy. The cause behind BPH is not well understood. Extracts of saw palmetto (Serenoa repens) are amongst the most widely used medicinal herbal preparations, used almost exclusively to alleviate urinary symptoms related to BPH. Given that little is known about the beneficial physiological role of saw palmetto as an alternative medication and which of the phytochemicals may be involved in improving the symptoms of BPH, this study investigated the effects of commercially available saw palmetto extracts on smooth muscle contractility in isolated preparations of rat prostate gland.
title: Maßnahmen zur besseren interprofessionellen Zusammenarbeit im Pflegeheim – Entwicklung in einem mehrstufigen qualitativen Forschungsprozess
Creators: name: Mueller, C.A.
name: Fleischmann, N.
name: Cavazzini, C.
name: Geister, C.
name: Tetzlaff, B.
name: Hoell, A.
name: Werle, J.
name: Scherer, M.
name: Hummers-Pradier, E.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: interprofessionelle Zusammenarbeit
subject: Maßnahmenentwicklung
subject: Pflegeheim
subject: 610 Medical sciences; Medicine

description: Hintergrund: Die Gesundheit von Pflegeheimbewohnern kann durch gute interprofessionelle Zusammenarbeit von Hausärzten und Pflegekräften positiv beeinflusst werden. Wir haben unter Einbezug der wesentlichen Akteursgruppen (Bewohnern, Angehörigen, Hausärzten, Pflegekräften) Maßnahmen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 49. Kongress für Allgemeinmedizin und Familienmedizin
The CDF W-mass, muon g-2, and dark matter in a $U(1)_{L_μ-L_τ}$ model with vector-like leptons
Creators: name: Zhou, Quan
name: Han, Xiao-Fang
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the CDF $W$-mass, muon $g-2$, and dark matter observables in a local $U(1)_{L_μ-L_τ}$ model in which the new particles include three vector-like leptons ($E_1,~ E_2,~ N$), a new gauge boson $Z'$, a scalar $S$ (breaking $U(1)_{L_μ-L_τ}$), a scalar dark matter $X_I$ and its partner $X_R$. We find that the CDF $W$-mass disfavors $m_{E_1}= m_{E_2}={m_N}$ or $s_L=s_R=0$ where $s_{L(R)}$ is mixing parameter of left (right)-handed fields of vector-like leptons. A large mass splitting between $E_1$ and $E_2$ is favored when the differences between $s_L$ and $s_R$ becomes small. The muon $g-2$ anomaly can be simultaneously explained for appropriate difference between $s_L$ $(m_{E_1})$ and $s_R$ $(m_{E_2})$, and some regions are excluded by the diphoton signal data of the 125 GeV Higgs. Combined with the CDF $W$-mass, muon $g-2$ anomaly and other relevant constraints, the correct dark matter relic density is mainly obtained in two different scenarios: (i) $X_IX_I\to Z'Z',~ SS$ for $m_{Z'}(m_S)
description: 18 pages, 4 figures, 1 tables
Perturbed Yukawa Textures in the Minimal Seesaw Model
Creators: name: Rink, Thomas
name: Schmitz, Kai
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: \noindent We revisit the \textit{minimal seesaw model}, i.e., the type-I seesaw mechanism involving only two right-handed neutrinos. % This model represents an important minimal benchmark scenario for future experimental updates on neutrino oscillations. % It features four real parameters that cannot be fixed by the current data: two $CP$-violating phases, $δ$ and $σ$, as well as one complex parameter, $z$, that is experimentally inaccessible at low energies. % The parameter $z$ controls the structure of the neutrino Yukawa matrix at high energies, which is why it may be regarded as a label or index for all UV completions of the minimal seesaw model. % The fact that $z$ encompasses only two real degrees of freedom allows us to systematically scan the minimal seesaw model over all of its possible UV completions. % In doing so, we address the following question: Suppose $δ$ and $σ$ should be measured at particular values in the future---to what extent is one then still able to realize approximate textures in the neutrino Yukawa matrix? % Our analysis, thus, generalizes previous studies of the minimal seesaw model based on the assumption of exact texture zeros. % In particular, our study allows us to assess the theoretical uncertainty inherent to the common texture ansatz. % One of our main results is that a normal light-neutrino mass hierarchy is, in fact, still consistent with a two-zero Yukawa texture, provided that the two texture zeros receive corrections at the level of $\mathcal{O}\left(\textrm{10}\,\%\right)$. % While our numerical results pertain to the minimal seesaw model only, our general procedure appears to be applicable to other neutrino mass models as well.
description: 30 pages, 7 figures, 2 tables; v2: updated references, extended discussion in the introduction and conclusions, new title, results unchanged, content matches version published in JHEP
title: Tattle-tails: Gauging downside risks using option prices
Creators: name: Adams, Greg
name: Tupis, Maksym
Publisher: name: Bank of Canada
Year: 2023

description: Options markets offer unique insights into the changing risks different assets face, which helps us better understand the broader risks to the Canadian economy. We show how option prices help reveal that investors did not anticipate large downside risks to either major Canadian banks or economic growth during the March 2023 financial sector system stress, a period when policy-makers and investors were unsure of what the future held for Canada’s economy.
description: Les marchés des options fournissent de l’information unique sur l’évolution des risques qui pèsent sur différents actifs, ce qui nous aide à mieux comprendre les risques de nature plus générale pour l’économie canadienne. Nous montrons comment les prix des options nous aident à déduire que les investisseurs n’anticipaient pas d’importants risques à la baisse pour les grandes banques canadiennes ou la croissance économique du pays quand le système financier a été soumis à des tensions en mars 2023, une période marquée par l’incertitude des décideurs et des investisseurs quant à l’évolution à venir de l’économie canadienne.
title: Wo arbeiten die Allgemeinmediziner nach der Facharztanerkennung? Analyse der Datenbank der ÄKWL
Creators: name: Bußhoff, S.
name: Huenges, B.
name: Rusche, H.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: Allgmeinmedizin-Weiterbildung
subject: Hausärztliche Tätigkeit
subject: Landarzt
subject: 610 Medical sciences; Medicine

description: Problem: Vor dem Hintergrund eines abzeichnenden Hausärztemangels, insbesondere im ländlichen Raum identifizierte die vorliegende Studie Faktoren für eine spätere hausärztliche Tätigkeit von Fachärzten für Allgemeinmedizin. Methode: Retrospektive explorative[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 49. Kongress für Allgemeinmedizin und Familienmedizin
High-frequency asymptotics of the vertex function: diagrammatic parametrization and algorithmic implementation
Creators: name: Wentzell, N.
name: Li, G.
name: Tagliavini, A.
name: Taranto, C.
name: Rohringer, G.
name: Held, K.
name: Toschi, A.
name: Andergassen, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Vertex functions are a crucial ingredient of several forefront many-body algorithms in condensed matter physics. However, the full treatment of their frequency and momentum dependence severely restricts numerical calculations. A significant advancement requires an efficient treatment of the high-frequency asymptotic behavior of the vertex functions. In this work, we first provide a detailed diagrammatic analysis of the high-frequency structures and their physical interpretation. Based on these insights, we propose a parametrization scheme, which captures the whole high-frequency domain for arbitrary values of the Coulomb interaction and electronic density, and we discuss the details of its algorithmic implementation in many-body solvers based on parquet-equations as well as functional renormalization group schemes. Finally, we assess its validity by comparing our results for a single impurity Anderson model with exact diagonalization calculations. The proposed parametrization is pivotal for the algorithmic development of all quantum many-body methods based on vertex functions arising from both local and non-local static microscopic interactions as well as effective dynamic interactions which uniformly approach a static value for large frequencies. In this way, our present technique can substantially improve vertex-based diagrammatic approaches including spatial correlations beyond dynamical mean-field theory.
description: 25 pages, 25 figures
General properties of fidelity in non-Hermitian quantum systems with PT symmetry
Creators: name: Tu, Yi-Ting
name: Jang, Iksu
name: Chang, Po-Yao
name: Tzeng, Yu-Chin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The fidelity susceptibility is a tool for studying quantum phase transitions in the Hermitian condensed matter systems. Recently, it has been generalized with the biorthogonal basis for the non-Hermitian quantum systems. From the general perturbation description with the constraint of parity-time (PT) symmetry, we show that the fidelity $\mathcal{F}$ is always real for the PT-unbroken states. For the PT-broken states, the real part of the fidelity susceptibility $\mathrm{Re}[\mathcal{X}_F]$ is corresponding to considering both the PT partner states, and the negative infinity is explored by the perturbation theory when the parameter approaches the exceptional point (EP). Moreover, at the second-order EP, we prove that the real part of the fidelity between PT-unbroken and PT-broken states is $\mathrm{Re}\mathcal{F}=\frac{1}{2}$. Based on these general properties, we study the two-legged non-Hermitian Su-Schrieffer-Heeger (SSH) model and the non-Hermitian XXZ spin chain. We find that for both interacting and non-interacting systems, the real part of fidelity susceptibility density goes to negative infinity when the parameter approaches the EP, and verifies it is a second-order EP by $\mathrm{Re}\mathcal{F}=\frac{1}{2}$.
description: To appear in journal
A boosted Kerr black hole solution and the structure of a general astrophysical black hole
Creators: name: Soares, Ivano Damião
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 83-XX, 83C15, 83C57

description: A solution of Einstein's vacuum field equations that describes a boosted Kerr black hole relative to an asymptotic Lorentz frame at the future null infinity is derived. The solution has three parameters (mass, rotation and boost) and corresponds to the most general configuration that an astrophysical black hole must have; it reduces to the Kerr solution when the boost parameter is zero. In this solution the ergosphere is north-south asymmetric, with dominant lobes in the direction opposite to the boost. However the event horizon, the Cauchy horizon and the ring singularity, which are the core of the black hole structure, do not alter, being independent of the boost parameter. Possible consequences for astrophysical processes connected with Penrose processes in the asymmetric ergosphere are discussed.
description: 11 pages, 1figure
Beyond superfluidity in driven non-equilibrium Bose-Einstein condensates
Creators: name: Pinsker, Florian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The phenomenon of superfluidity in open Bose-Einstein condensates (BEC) is analysed numerically and analytically. It is found that a superfluid phase is feasible even above the speed of sound, when forces due to inhomogeneous non-equilibrium processes oppose the contributions of homogeneous processes. Furthermore a regime of accelerating impurities can be observed for particular pumping/decay strategies. All findings are derived within the complex Gross-Pitaevskii (GP) theory with creation and annihilation terms. Utilising this framework the effective force acting on an impurity as it moves with velocity v through the open condensate can be calculated. The result shows that the force is continuously increasing/decreasing with increasing velocity starting from the state of zero motion at v = 0, a property that can be traced down to the additional homogeneous annihilation/creation term in the extended GP model. Our findings stand in stark contrast to the concept of a topological phase transition to frictionless flow below a critical velocity as observed for equilibrium Bose-Einstein condensates analytically, numerically and for trapped atoms experimentally.
description: Added numerics, typos and small errors are corrected. Text focuses more on the in homogeneously driven effects
Cosmic strings from pure Yang-Mills theory
Creators: name: Yamada, Masaki
name: Yonekura, Kazuya
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the formation of cosmic strings or macroscopic color flux tubes at the phase transition from the deconfinement to confinement phase in pure Yang-Mills (YM) theory, such as SU($N$), Sp($N$), SO($N$), and Spin($N$), based on the current understanding of theoretical physics. According to the holographic dual descriptions, the cosmic strings are dual to fundamental strings or wrapped D-branes in the gravity side depending on the structure of the gauge group, and the reconnection probability is suppressed by $\mathcal{O}(N^{-2})$ and $e^{-\mathcal{O}(N)}$, respectively. The pure YM theory thus provides a simple realization of cosmic F- and D-strings without the need for a brane-inflationary scenario or extra dimension. We also review the stability of cosmic strings based on the concept of 1-form symmetry, which further implies the existence of a baryon vertex in some YM theory. We calculate the gravitational wave spectrum that is emitted from the cosmic strings based on an extended velocity-dependent one-scale model and discuss its detectability based on ongoing and planned gravitational-wave experiments. In particular, the SKA and LISA can observe gravitational signals if the confinement scale is higher than $\mathcal{O}(10^{12})\,\mathrm{GeV}$ and $\mathcal{O}(10^{10})\,\mathrm{GeV}$ for SU($N$) with $N = \mathcal{O}(1)$, respectively.
description: 49 pages, 7 figures; In-depth article accompanying "Cosmic F- and D-strings from pure Yang-Mills theory"; v2: minor comments added, published version
Endodoncia. Tratamiento de conductos radiculares
Creators: name: Martínez Zabaleta, Daniel
name: Zabaleta Jaspe, Alcides
Publisher: name: Universidad de Cartagena
Year: 1957
Subjects: Conductos radiculares
Enfermedades de la pulpa dental
Enfermedades de la boca

description: Tesis (Odontólogo).-- Universidad de Cartagena. Facultad de Odontología,1957
description: Dentro de esta investigación, se busca eliminar el tejido pulpar inflamado irreversiblemente, infectado o expuesto por un trauma severo del diente. Por medio de la endodoncia se busca eliminar el proceso inflamatorio o infeccioso salvando un diente que de otro modo continuaría deteriorándose hasta perderse eventualmente.
Parallel spinors, pp-waves, and gravitational perturbations
Creators: name: Araneda, Bernardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove that any real, vacuum gravitational perturbation of a 4-dimensional vacuum pp-wave space-time can be locally expressed, modulo gauge transformations, as the real part of a Hertz/Debye potential, where the scalar potential satisfies the wave equation. We discuss relations with complex perturbations, complex space-times, non-linear structures, and real spaces with split (ultra-hyperbolic/Kleinian) signature. Motivated by generalized notions of parallel spinors, we also discuss generalizations of the result to other space-times.
description: 15+5 pages, 1 figure