cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ramsey-type phase control of free electron beams
Creators: name: Echternkamp, Katharina E.
name: Feist, Armin
name: Schäfer, Sascha
name: Ropers, Claus
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Interference between multiple distinct paths is a defining property of quantum physics, where "paths" may involve actual physical trajectories, as in interferometry, or transitions between different internal (e.g. spin) states, or both. A hallmark of quantum coherent evolution is the possibility to interact with a system multiple times in a phase-preserving manner. This principle underpins powerful multi-dimensional optical and nuclear magnetic resonance spectroscopies and related techniques, including Ramsey's method of separated oscillatory fields used in atomic clocks. Previously established for atomic, molecular and quantum dot systems, recent developments in the optical quantum state preparation of free electron beams suggest a transfer of such concepts to the realm of ultrafast electron imaging and spectroscopy. Here, we demonstrate the sequential coherent interaction of free electron states with two spatially separated, phase-controlled optical near-fields. Ultrashort electron pulses are acted upon in a tailored nanostructure featuring two near-field regions with anisotropic polarization response. The amplitude and relative phase of these two near-fields are independently controlled by the incident polarization state, allowing for constructive and destructive quantum interference of the subsequent interactions. Future implementations of such electron-light interferometers may yield unprecedented access to optically phase-resolved electronic dynamics and dephasing mechanisms with attosecond precision.
Los sistemas de información en las empresas de servicios públicos domiciliarios de Cartagena frente a la satisfacción del usuario
Creators: name: Duque Juan, Yamile
name: Tous Martínez, Claudia Marcela
Publisher: name: Universidad de Cartagena
Year: 2003
Subjects: Sistemas de información
Servicios públicos domiciliarios - Satisfacción del usuario

description: Tesis (Administrador de Empresas). -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2003
description: El presente estudio tiene por objeto establecer las características de los sistemas de información utilizados por las empresas de servicios públicos domiciliarios de Cartagena y determinar su incidencia en la satisfacción o insatisfacción de los usuarios.
title: Mandatory Retention Rules and Bank Risk
Creators: name: Cheng, Yuteng
Publisher: name: Bank of Canada
Year: 2023

description: This paper studies, theoretically and empirically, the unintended consequences of mandatory
retention rules in securitization. The Dodd-Frank Act and the EU Securitisation Regulation both
impose a 5% mandatory retention requirement to motivate screening and monitoring. I first
propose a novel model showing that while retention strengthens monitoring, it may also
encourage banks to shift risk. I then provide empirical evidence supporting this unintended
consequence: in the US data, banks shifted toward riskier portfolios after the implementation
of the retention rules embedded in Dodd-Frank. Furthermore, the model offers clear, testable
predictions about policy and corresponding consequences. In the US data, stricter retention
rules caused banks to monitor and shift risk simultaneously. According to the model prediction,
such a simultaneous increase occurs only when the retention level is above optimal, which
suggests that the current rate of 5% in the US is too high.
description: Cette étude examine, sous un angle théorique et empirique, les conséquences fortuites des
règles obligatoires de rétention qui s’appliquent aux titrisations. La loi Dodd-Frank et le
règlement de l’Union européenne sur la titrisation imposent tous deux une exigence de
rétention du risque de 5 % pour inciter à la sélection et à la surveillance des risques. L’auteur
propose d’abord un nouveau modèle montrant que si la rétention renforce la surveillance, elle
peut aussi encourager les banques à déplacer le risque. Il fournit ensuite des preuves
empiriques de cette conséquence imprévue : les données américaines indiquent que les
banques se sont tournées vers des portefeuilles plus risqués après l’entrée en vigueur des
règles de rétention enchâssées dans la loi Dodd-Frank. De plus, le modèle permet de faire des
prévisions claires et vérifiables sur la politique et ses conséquences. On constate dans les
données américaines que les règles de rétention plus strictes ont amené les banques à
simultanément surveiller et déplacer le risque. Selon la prévision du modèle, une telle
augmentation simultanée ne se produit que lorsque le niveau de rétention est supérieur au
niveau optimal, ce qui donne à penser que le taux actuel de 5 % aux États-Unis est trop élevé.
title: Entwicklung eines Fragebogens zur Erhebung der Einstellung von ÄrztInnen zur Choosing-Wisely-Initiative (EvA-CWI)
Creators: name: Avian, Alexander
name: Horvath, Karl.
name: Abuzahra, Muna
name: Elser, Angelika
name: Jeitler, Klaus
name: Berghold, Andrea
name: Siebenhofer-Kroitzsch, Andrea
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund und Fragestellung: Die Choosing-Wisely-Initiative (CWI) hat es sich zum Ziel gesetzt, vor allem auf die Aspekte der Überversorgung, die teilweise auch zu einem direkten Schaden für die Patienten führen, aufmerksam zu machen. Fachgesellschaften und andere Organisationen im [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsam informiert entscheiden; 17. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Cold plasma for sustainable control of hygienically relevant biofilms. The interaction of plasma distance and exposure time
Creators: name: Dahle, Sebastian
name: Žigon, Jure
name: Fink, Rok
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: This study aimed to analyse the efficacy of a new cold plasma device adapted for treatment with a low power consumption . We tested the reduction of bacterial cells in biofilms of E. coli, S. aureus and P. aeruginosa. . The results show significant differences between bacterial cells, suggesting that Gramme-positive S. aureus is less susceptible to plasma treatment than Gramme-negative E. coli and P. aeruginosa. Increasing the exposure time and decreasing the distance decreases the number of cells in the biofilm. However, the combination of close distance and long exposure time resulted in synergistic effects. We demonstrated a reduction of up to 6.6 log CFU cm2 for E. coli at 1 mm and an exposure time of 60 seconds. All these indicate that the new cold plasma jet device can be an important key to ensuring hygiene and numerous applications in medicine and engineering are possible.
title: Responding to Individual Needs or Inclusion for All
title: Dilemmas of Practice in Provision for Young People with English as an Additional Language
titleType: Subtitle
Creators: name: Hynie, Joanne
Publisher: name: Lancaster University
Year: 2022

description: The inclusion of young people with English as an additional language (EAL) requires practitioners in schools to both respond to individual needs and provide an inclusive environment. These requirements create a dilemma which is causing teachers to question whether inclusion is possible, as the first seeks to highlight difference, while the second seeks to remove difference. While the dilemma has been studied from the perspective of policy and of young people with EAL, few studies have examined it from the perspective of practitioners themselves as mediators between policy and practice. To examine how practitioners negotiate the dilemma of inclusion, and the claim of inclusive provision to be socially just, this study used the theoretical tool of parity of participation. Practitioners’ beliefs, experiences and attitudes provided data on the norms and values of inclusive practice, and a discourse analysis of the key inclusion documents contributed data regarding the influences on practitioners’ views. The findings indicate that inclusion for all is a valid underpinning of EAL education. However, the notion is not clearly unpacked, and thus teachers are unsure how to deliver it. Secondly, its current configuration is problematic for EAL pupils as it does not meet all their needs. Thirdly, inclusion policy is determined without the contribution of insights from teachers. It is proposed that, within an overarching system of shared and inclusive values, a framework of parity of participation can ensure that teachers have the tools to recognise the needs of their EAL pupils, to represent them, and to redistribute resources appropriately. In their capacity to cushion the dilemma of EAL inclusive practice, and strengthen the inclusion ideal, the findings contribute to developing EAL inclusive practice in secondary schools, and demonstrate that EAL inclusion can make a positive contribution to the policy of inclusion for all.
Short-term exposure to ambient nitrogen dioxide and increased hospitalization burden for depression in China: a multicity analysis
Creators: name: Ma, Yating
name: Jiang, Yunxing
name: Guo, Tongjun
name: Wang, Jinxi
name: Chen, Libo
name: Wei, Chen
name: Ni, Xiaoli
name: Deng, Furong
name: Guo, Xinbiao
name: Wu, Shaowei
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Medicine
Neuroscience
Biotechnology
Chemical Sciences not elsewhere classified
Marine Biology
Hematology

description: Evidence for the increased hospitalization burden, including admissions, expenditures and length of hospital stay (LOS) for depression attributable to ambient nitrogen dioxide (NO2) is lacking. We investigated the associations between short-term exposure to ambient NO2 and attributable admissions, hospitalization expenditures and LOS for depression in 57 Chinese cities during 2013–2017 using a well-established two-stage time-series study approach. Short-term exposure to ambient NO2 was associated with significantly increased admissions, hospitalization expenditures and LOS for depression, and the attributable fractions were 6.87% (95% CI: 2.90%, 10.65%), 7.12% (3.01%, 11.04%) and 6.12% (2.59%, 9.50%) at lag02, respectively. The projected total attributable admissions, hospitalization expenditures and LOS for depression related to ambient NO2 at the national level were 23,335 (9,863, 36,181) admissions, 318.70 (134.43, 492.21) million CNY and 539.55 (227.99, 836.99) thousand days during the study period, respectively. Short-term exposure to ambient NO2 is associated with increased hospitalization burden for depression.
Estudio de prefactibilidad de la vía Circunvalar al Cerro de la Popa
Creators: name: Ballestas Robinson, Alvaro Angel
name: Franceschi Esparragoza, Gisela Maria
Publisher: name: Universidad de Cartagena
Year: 2004
Subjects: Transporte terrestre de alta velocidad
Carreteras
Calles
Ingeniería del transporte

description: Tesis (Ingeniero Civil) - - Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa Ingeniería Civil, 2004.
description: El presente estudio tiene por objeto presentar diseños preliminares de una de una vía distribuidora y de acceso rápido ubicado en las faldas de la popa, que sea circunvalar a esta.
The Rossiter-McLaughlin effect reloaded: Probing the 3D spin-orbit geometry, differential stellar rotation, and the spatially-resolved stellar spectrum of star-planet systems
Creators: name: Cegla, H. M.
name: Lovis, C.
name: Bourrier, V.
name: Beeck, B.
name: Watson, C. A.
name: Pepe, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: When a planet transits its host star, it blocks regions of the stellar surface from view; this causes a distortion of the spectral lines and a change in the line-of-sight (LOS) velocities, known as the Rossiter-McLaughlin (RM) effect. Since the LOS velocities depend, in part, on the stellar rotation, the RM waveform is sensitive to the star-planet alignment (which provides information on the system's dynamical history). We present a new RM modelling technique that directly measures the spatially-resolved stellar spectrum behind the planet. This is done by scaling the continuum flux of the (HARPS) spectra by the transit light curve, and then subtracting the in- from the out-of-transit spectra to isolate the starlight behind the planet. This technique does not assume any shape for the intrinsic local profiles. In it, we also allow for differential stellar rotation and centre-to-limb variations in the convective blueshift. We apply this technique to HD189733 and compare to 3D magnetohydrodynamic (MHD) simulations. We reject rigid body rotation with high confidence (> 99% probability), which allows us to determine the occulted stellar latitudes and measure the stellar inclination. In turn, we determine both the sky-projected (lambda ~ -0.4 +/- 0.2 degrees) and true 3D obliquity (psi ~ 7^+12_-4 degrees). We also find good agreement with the MHD simulations, with no significant centre-to-limb variations detectable in the local profiles. Hence, this technique provides a new powerful tool that can probe stellar photospheres, differential rotation, determine 3D obliquities, and remove sky-projection biases in planet migration theories. This technique can be implemented with existing instrumentation, but will become even more powerful with the next generation of high-precision radial velocity spectrographs.
description: ~12 pages + 3 pages references/appendix, 8 figures + 2 appendix figures, accepted to A&A
Super-Eddington growth of the first black holes
Creators: name: Pezzulli, Edwige
name: Valiante, Rosa
name: Schneider, Raffaella
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The assembly of the first super massive black holes (SMBHs) at $z \gtrsim 6$ is still a subject of intense debate. If black holes (BHs) grow at their Eddington rate, they must start from $\gtrsim 10^4 \, M_\odot$ seeds formed by the direct collapse of gas. Here we explore the alternative scenario where $\sim 100 \, M_\odot$ BH remnants of the first stars grow at super-Eddington rate via radiatively inefficient slim accretion disks. We use an improved version of the cosmological, data-constrained semi-analytic model GAMETE/QSOdust, where we follow the evolution of nuclear BHs and gas cooling, disk and bulge formation of their host galaxies. Adopting SDSS J1148+5251 (J1148) at $z = 6.4$ as a prototype of luminous $z \gtrsim 6$ quasars, we find that $\sim$ 80% of its SMBH mass is grown by super-Eddington accretion, which can be sustained down to $z \sim 10$ in dense, gas-rich environments. The average BH mass at $z \sim 20$ is $M_{\rm BH} \gtrsim 10^4 \,M_\odot$, comparable to that of direct collapse BHs. At $z = 6.4$ the AGN-driven mass outflow rate is consistent with the observations and the BH-to-bulge mass ratio is compatible with the local scaling relation. However, the stellar mass in the central 2.5 kpc is closer to the value inferred from CO observations. Finally, $\sim 20 %$ of J1148 progenitors at $z=7.1$ have BH luminosities and masses comparable to ULAS J1120+0641, suggesting that this quasar may be one of the progenitors of J1148.
description: 14 pages, 11 figures, 2 tables, accepted for publication in MNRAS
title: Entwicklung eines Programms zur Routineimplementierung der Partizipativen Entscheidungsfindung in der Onkologie
Creators: name: Hahlweg, Pola
name: Müller, Evamaria
name: Hoffmann, Jana
name: Härter, Martin
name: Frosch, Dominick
name: Elwyn, Glyn
name: Van Der Weijden, Trudy
name: Scholl, Isabelle
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund und Fragestellung: Partizipative Entscheidungsfindung (PEF) wird von vielen Patienten gewünscht und auch auf gesundheitspolitischer Ebene gefordert. Nichtsdestotrotz wird PEF in der Routineversorgung bisher kaum umgesetzt. Aus der Implementierungsforschung ist bekannt, dass eine theoretische[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsam informiert entscheiden; 17. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Opinión pública y prensa durante la regeneración: ¿Política de orden y censura?. Cartagena 1886-1899
Creators: name: De León Mendoza, Vicky
Publisher: name: Universidad de Cartagena
Year: 2010
Subjects: Política Regeneradora
Opinión Pública

description: Tesis (Historia) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Historia, 2010
description: En un mundo globalizado como el de hoy, en el que la información viaja de manera fluida y veloz, simplificando así las distancias, derribando las fronteras culturales y permitiendo la intercomunicación del orbe; nos encontramos frente a un fenómeno si se quiere paradigmático, en tanto en cuanto, el escenario político latinoamericano contemporáneo se ha visto avocado a realidades que aluden a la negación de un derecho fundamental que está asociado al ejercicio de la ciudadanía plena, como lo es el de la libertad de opinión. Este fenómeno de coerción o supresión a la creación de una opinión pública divergente de las políticas oficiales, se ha generado porque algunos gobiernos ven en los medios de comunicación de oposición una amenaza real para mantenerse en el poder, además porque estos medios masivos como la televisión, radio y prensa son capaces de crear en “el pueblo como depositario de la soberanía” , una opinión capaz de influir decisivamente en la estabilidad y continuidad de los gobiernos.
Life and death of a cosmic particle in the Milky Way
Creators: name: Carmelo, Evoli
Publisher: name: Zenodo
Year: 2020
Subjects: cosmic rays
astroparticle physics

description: Slides of the remote talk I gave at the Joint Seminar Series co-hosted by IRA/INAF, OASBO and Bologna University.
description: {"references": ["Evoli et al., (2020), PRL in press, arXiv:2007.01302"]}
title: PFAS: inschatting PFAS-vrachten in de Zeeschelde
Creators: name: Plancke, Yves
name: Vanhooren, J.
name: De Maerschalck, Bart
name: Gabriels, W.
Publisher: name: Flanders Hydraulics Research
Year: 2022

description: Title : WL Rapporten. Waterbouwkundig Laboratorium: Antwerpen. Volume : 22_079_1 Issue : Pagination : VI, 17 p.
Non-archimedean valuations of eigenvalues of matrix polynomials
Creators: name: Akian, Marianne
name: Bapat, Ravindra
name: Gaubert, Stéphane
Publisher: name: arXiv
Year: 2016
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 47A55, 47A75, 05C50, 12K10

description: We establish general weak majorization inequalities, relating the leading exponents of the eigenvalues of matrices or matrix polynomials over the field of Puiseux series with the tropical analogues of eigenvalues. We also show that these inequalities become equalities under genericity conditions, and that the leading coefficients of the eigenvalues are determined as the eigenvalues of auxiliary matrix polynomials.
description: 31 pages, 2 figures. arXiv admin note: text overlap with arXiv:math/0402090
Empresa solidaria de salud para pescadores artesanales del municipio de pinillo
Creators: name: Salas Villadiego, Benjamín
name: Gutierrez Bentham, Isabel
Publisher: name: Universidad de Cartagena
Year: 1994
Subjects: Pesca - Cooperativa
Cooperativas pesqueras

description: Tesis (Especialista en Salud Ocupacional) -- Universidad de Cartagena. Facultad de enfermería. Departamento de postgrado, 1994
description: El presente trabajo recopila las etapas de un proceso de investigación y la intervención de uno de los problemas identificados en la fase diagnóstica. El proyecto de investigación tuvo como objetivo identificar las condiciones de salud y trabajo de los pescadores artesanales del municipio de Pinillos, tomándose como variables condiciones de trabajo y condiciones de salud, obteniéndose el siguiente resultado: La población de pescadores estudiada no presenta mayores daños en su salud al estar sometidos a las condiciones laborales características de los pescadores, no obstante la forma de vida a las cuales están sometidos diariamente; caracterizada por insatisfacción de necesidades básicas que repercuten ostensiblemente en su nivel de salud.
The ROS/NF-κB/HK2 axis is involved in the arsenic-induced Warburg effect in human L-02 hepatocytes
Creators: name: Yin, Fanshuo
name: Zhang, Ying
name: Zhang, Xin
name: Zhang, Meichen
name: Zhang, Zaihong
name: Yin, Yunyi
name: Xu, Haili
name: Yang, Yanmei
name: Gao, Yanhui
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Infectious Diseases
subject: FOS: Health sciences

description: Arsenic has been identified as a carcinogen, although the molecular mechanism underlying itscarcinogenesis has not been fully elucidated. To date, only a few studies have attempted to confirm a direct link between oxidative stress and the Warburg effect . This study demonstrated that 0.2 μmol/L As3+ induced the Warburg effect to contribute to abnormal proliferation of L-02 cells, that was mediated by upregulation of hexokinase 2 (HK2), a key enzyme in glycolysis. Further study indicated that arsenic-induced accumulation of reactive oxygen species (ROS) activated the nuclear factor kappa B (NF-κB) signaling pathway by phosphorylation of p65 at the Ser536 and Ser276 sites, leading to upregulated expression of HK2. We therefore concluded that the ROS/NF-κB/HK2 axis contributes to the Warburg effect and cell proliferation induced by low doses of arsenic. AbbreviationsROS, Reactive oxygen species; NAC, N-acetyl-L-cysteine; 2-DG, 2-deoxy-D-glucose; 2-NBDG, 2-Deoxy-2-[(7-nitro-2,1,3-benzoxadiazol-4-yl)amino]-D-glucose
Supraglacial and englacial particle-ice interaction in dirty ice conditions
Creators: name: Reeves, Katherine
Publisher: name: Lancaster University
Year: 2022

description: Particles can modify the thermodynamic behaviour of ice in response to insolation. Ice with surface particles is defined as ‘debris-covered’ or ‘dirty’ ice, depending on whether a continuous or discontinuous layer is present, respectively. The behaviour of dirty ice has not been extensively researched, although these ice conditions are common. Improving our understanding of discontinuous particle-ice interaction can aid forecasting of ice changes in a warming world. Laboratory experiments were designed to address knowledge gaps in the behaviour of: (1) particle properties (thermal conductivity, albedo, density, and diameter) on influencing particle-ice interaction using control particles, such as plastics (e.g. polystyrene) and metals (e.g. brass and chrome steel); (2) volcanic particles (e.g. basaltic scoria and rhyolitic pumice) in dirty ice conditions; and (3) microplastic particles (e.g. polyethylene and polypropylene) in dirty ice conditions. Particle-ice interaction under analogue insolation (80 W LED) was studied in conditions analogous to the supraglacial and englacial environment, at scales ranging from individual particles to a scattering of particles, all with a diameter Results demonstrated that dirty ice conditions are significant for glacier ablation, with a range of particle-ice behaviours observed: (1) sinking particles created melt channels within ice; (2) floating particles created surface meltwater ponds with surface tension effects facilitating particle redistribution processes; (3) particles utilised pre-existing internal ice structures (e.g. vein networks) as ablation pathways; and (4) volcanic particle fragmentation. These were controlled by the thermal state of ice, and particle properties. The englacial environment was additionally found to be significant for ablation. The laboratory behaviour of volcanic and microplastic particles compared well with behaviours estimated through systematic investigation of particle properties, suggesting that the fate of particles within ice can be mapped through assessment of particle properties.
title: Entwicklung und Evaluation des doktormitSDM-Trainings als Ansatz zur Förderung von Shared Decision Making in der klinischen Praxis – ein Kontinuum wachsender Evidenz
Creators: name: Liethmann, Katrin
name: Geiger, Friedemann
name: Klemperer, David
name: Rumpsfeld, Markus
name: Kasper, Jürgen
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund und Fragestellung: Es gibt wenige nachweislich wirksame Ärztetrainings zur Verbesserung von Shared Decision Making-Kompetenzen (SDM). Eine gründliche Evaluation muss den komplexen Charakter der Intervention berücksichtigen. Das Poster zeigt, dass die bisherigen Studien zur[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsam informiert entscheiden; 17. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Interlayer excitons with tunable dispersion relation
Creators: name: Skinner, Brian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Interlayer excitons, comprising an electron in one material bound by Coulomb attraction to a hole in an adjacent material, are composite bosons that can assume a variety of many-body phases. The phase diagram of the bosonic system is largely determined by the dispersion relation of the bosons, which itself arises as a combination of the dispersion relations of the electron and hole separately. Here I show that in situations where either the electron or the hole has a non-monotonic, "Mexican hat-shaped" dispersion relation, the exciton dispersion relation can have a range of qualitatively different forms, each corresponding to a different many-body phase at low temperature. This diversity suggests a novel platform for continuously tuning between different quantum phases using an external field.
description: 5+2 pages, 5 figures
"Estudio sobre las razones por las cuales la mujer puede adoptar una conducta indebida" (Prostituirse)
Creators: name: Anaya Rodríguez, Ana Esperanza
Publisher: name: Universidad de Cartagena
Year: 1971
Subjects: Prostitución - Aspectos jurídicos - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas, 1971.
description: Con la abolición de la prostitución encierra medidas preventivas, como las campañas de educación sexual, la nivelación de derechos en ambos sexos, la ampliación de las oportunidades para los grupos femeninos serían más deprimidos económicamente.
Sustainable harvest for medicinal plant
Creators: name: Research, Nature
Publisher: name: Manara - Qatar Research Repository
Year: 2023
Subjects: classificationCode: 41
subject: Environmental sciences
classificationCode: 4102
subject: Ecological applications
classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences
classificationCode: 3103
subject: Ecology

description: Ecologists working in West Africa have produced a model that predicts how a significant medicinal plant can be harvested in a sustainable way that minimizes the impact on the environment. Sarcocephalus latifolius, the African peach, is a multi-stemmed shrub that synthesizes a painkiller called tramadol in its root bark. Such medicinal plants are used widely throughout sub-Saharan Africa, where they provide an easily accessible source of medication, but many species are being overexploited, and some are now in decline. Sibiry Albert Kaboré of the Polytechnic University of Bobo-Dioulasso in Burkina Faso and his colleagues examined the root system architecture of S. latifolius to determine the root biomass, and determine which harvesting practices maximize yield while conserving the species. The shrub or small tree has many medicinal properties, and various parts of it are used widely throughout sub-Saharan Africa. In the southwestern region of Burkina Faso, the roots of the plant are used to treat stomach ache, malaria, and hernias; elsewhere, its reddish-brown fruit is eaten as a cough remedy. Kaboré and his colleagues randomly selected 40 individual S. latifolius plants from three different sites in the Sudanian zone of southwestern Burkina Faso. Each plant is at the centre of a circular root system, and the researchers dug out one quadrant of each root system and immediately replaced the soil afterwards. They dug out one root system in its entirety, to make a schematic diagram of its layout, and measured the length and depth of all the excavated roots, the distance between their tips and the trunk, their direction of growth, and their fresh weight. Their data showed that the plants in this region have an average of eight lateral roots each, and an average length of about 11 m. The root systems examined were mostly distributed between 10 and 50 cm deep, with an average fresh weight of 43 kg. The ‘semi-destructive’ method of excavating the root systems was used to avoid further damage to the plants, and indeed follow-up observations revealed that very few of the plants sampled had died in the two-year period after the study. The researchers conclude that people using this plant should harvest the tips of the roots instead of roots near the trunk, in order to keep the plants alive and help preserve the species. “We think that our model is applicable to trees and shrubs of the savannas and dry forests with a little tap root,” says Kaboré. “We are continuing to study other aspects of the species’ roots, like anatomy and growth.”
Other InformationPublished in: QScience.com Highlights, Published by Nature Research for Hamad bin Khalifa University Press (HBKU Press)
License: http://creativecommons.org/licenses/by/4.0
Assessment of a SARS-CoV-2 wastewater monitoring program in El Paso, Texas, from November 2020 to June 2022
Creators: name: Gitter, Anna
name: Bauer, Cici
name: Wu, Fuqing
name: Ramphul, Ryan
name: Chavarria, Carlos
name: Zhang, Kehe
name: Petrosino, Joseph
name: Mezzari, Melissa
name: Gallegos, Gabriela
name: Terwilliger, Austen L.
name: Clark, Justin R.
name: Feliz, Karen
name: Avadhanula, Vasanthi
name: Piedra, Tony
name: Weesner, Kyle
name: Maresso, Anthony
name: Mena, Kristina D.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: The border city of El Paso, Texas, and its water utility, El Paso Water, initiated a SARS-CoV-2 wastewater monitoring program to assess virus trends and the appropriateness of a wastewater monitoring program for the community. Nearly weekly sample collection at four wastewater treatment facilities (WWTFs), serving distinct regions of the city, was analyzed for SARS-CoV-2 genes using the CDC 2019-Novel coronavirus Real-Time RT-PCR diagnostic panel. Virus concentrations ranged from 86.7 to 268,000 gc/L, varying across time and at each WWTF. The lag time between virus concentrations in wastewater and reported COVID-19 case rates (per 100,00 population) ranged from 4–24 days for the four WWTFs, with the strongest trend occurring from November 2021 - June 2022. This study is an assessment of the utility of a geographically refined SARS-CoV-2 wastewater monitoring program to supplement public health efforts that will manage the virus as it becomes endemic in El Paso.
title: Erste Erfahrungen mit ROBIS im Vergleich zum etablierten AMSTAR-Tool
Creators: name: Bühn, Stefanie
name: Mathes, Tim
name: Prengel, Peggy
name: Wegewitz, Uta
name: Pieper, Dawid
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Zielsetzung: Systematischen Übersichtsarbeiten (SR) wird der höchste Evidenzgrad zugesprochen, doch auch sie sind nicht frei von methodischen Mängeln und Verzerrungen. Derzeit ist AMSTAR das am häufigsten gebrauchte Instrument zur Bewertung der methodischen Qualität von SRs.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsam informiert entscheiden; 17. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Radio, memoria y sociedad: Las voces del secuestro en el marco del Acuerdo de Paz, 2012-2016
Creators: name: Calvo Licero, Jerly
Publisher: name: Universidad de Cartagena
Year: 2020
Subjects: subject: Consolidación de la paz
subject: Conflicto armado
subject: Procesos de paz - 2012-2016

description: En este trabajo se sostiene que Las voces del secuestro fue un escenario radial desde donde se intentaba inventar y legitimar un tipo de memoria surgida de la comunicación entre las personas que contaban sus experiencias, o manifestaban sus esperanzas, y el director de las emisiones que tenía una posición política parcializada sobre la guerra, la práctica del secuestro y una férrea oposición frente a una paz negociada. Desde ese punto de vista hay dos aspectos centrales que se quieren considerar. Por un lado, en primer lugar, se destacan los lenguajes que se transmitían en el programa radial para recuperar los hechos individuales y colectivos de la violencia en la voz de los actores que habían sido secuestrados, o de los familiares, a partir de los cuales se tejían una serie de expectativas sobre el fin del conflicto armado, y el pronto reencuentro y la reparación de las víctimas de la violencia. Y, por otro lado, en segundo lugar, de manera crítica se muestra cómo la memoria que intentaba construirse desde la radio resultó ser poco incluyente en su ejercicio de recuperación, al dejar por fuera la voz de aquellos actores sociales que tenían una posición contraria a los formatos establecidos o la posición política manifestada desde la dirección de Las voces del secuestro.
Economic evidence for a watch-and-wait strategy in patients with clinical complete response following neoadjuvant chemoradiotherapy for rectal cancer: a systematic review and critical appraisal
Creators: name: Thapa, Shabnam
name: Payne, Katherine
name: Thokala, Praveen
name: Malcomson, Lee
name: Renehan, Andrew G
Publisher: name: Zenodo
Year: 2022
Subjects: economic evaluation, watch-and-wait, surgery, rectal cancer, cost-effectiveness

description: In patients with rectal cancer who achieve clinical complete response after neoadjuvant chemoradiotherapy, watch-and-wait (W&W) is a novel management strategy with potential to avoid major surgery but this is not yet routine practice. Observational studies have shown that watch-and-wait strategy is safe and have similar oncological outcomes compared with surgery in these group of patients (1). Evidence of cost-effectiveness of watch-and-wait strategy will better inform policy decision making on whether to endorse and implement this strategy of organ preservation. Hence, we undertook a systematic review of economic evaluation in this question.
Transformación del almacén de materiales de Vikingos de Colombia S.A. en una empresa comercializadora
Creators: name: Costa Barraza, Carlos Benjamin
name: Crismatt Corena, Carlos José
Publisher: name: Universidad De Cartagena
Year: 2000
Subjects: Reorganización de empresas

description: Tesis (Economista) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 2000.
description: El presente estudio tiene por objeto proponer una opción que permita a la compañía vikingos S.A. aprovechar los servicios de la ferretería naval, de tal forma que se pueda delegar en terceros la administración de la misma, reduciendo así los costos de operación, de administración, y mejorar la calidad del servicio.
title: Ethik-Universität zur Regenerativen Medizin – ein Modell zur Förderung der „Ethics Literacy“
Creators: name: Hirschberg, Irene
name: Strech, Daniel
name: Neitzke, Gerald
name: Werdecker, Lena
name: Bossert, Sabine
name: Meyer, Antje
name: Seidel, Gabriele
name: Dierks, Marie-Luise
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund / Zielsetzung: Bürgerbeteiligung gewinnt in der Forschung zunehmend an Bedeutung. Laut Empfehlung des Nuffield Council on Bioethics (2012, [ref:2]) sollte während der Entwicklung von „emerging biotechnologies” ein öffentlicher Diskurs initiiert[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsam informiert entscheiden; 17. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
Detection of protonated formaldehyde in the prestellar core L1689B
Creators: name: Bacmann, A.
name: García-García, E.
name: Faure, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Complex organic molecules (COMs) are detected in many regions of the interstellar medium, including prestellar cores. However, their formation mechanisms in cold (~10 K) cores remain to this date poorly understood. The formyl radical HCO is an important candidate precursor for several O-bearing terrestrial COMs in cores, as an abundant building block of many of these molecules. Several chemical routes have been proposed to account for its formation, both on grain surfaces, as an incompletely hydrogenated product of H addition to frozen-out CO molecules, or in the gas phase, either the product of the reaction between H2CO and a radical, or as a product of dissociative recombination of protonated formaldehyde H2COH+. The detection and abundance determination of H2COH+, if present, could provide clues as to whether this latter scenario might apply. We searched for protonated formaldehyde H2COH+ in the prestellar core L1689B using the IRAM 30m telescope. The H2COH+ ion is unambiguously detected, for the first time in a cold (~10 K) source. The derived abundance agrees with a scenario in which the formation of H2COH+ results from the protonation of formaldehyde. We use this abundance value to constrain the branching ratio of the dissociative recombination of H2COH+ towards the HCO channel to ~10-30%. This value could however be smaller if HCO can be efficiently formed from gas-phase neutral-neutral reactions, and we stress the need for laboratory measurements of the rate constants of these reactions at 10 K. Given the experimental difficulties in measuring branching ratios experimentally, observations can bring valuable constraints on these values, and provide a useful input for chemical networks.
description: accepted by A&A Letters
title: Learning to See the Unknown: Drawing Out the Strange
Creators: name: Carruthers, Hayley
Publisher: name: Emily Carr University of Art and Design
Year: 2020
Subjects: subject: Drawing
valueUri: http://id.loc.gov/authorities/subjects/sh85039408
subject: Perception
valueUri: http://id.loc.gov/authorities/subjects/sh85099708
subject: Neural stimulation
valueUri: http://id.loc.gov/authorities/subjects/sh85091094
subject: Art and science
valueUri: http://id.loc.gov/authorities/subjects/sh85007974

description: Learning to See the Unknown: Drawing Out the Strange is a thesis project that takes a speculative approach to reflecting on subjective experiences of mental imagery, perception, and other neural phenomena. Entangled with ways of understanding from scientific knowledge practices within neuroscience the work engages with histories of scientific renderings that visualize the invisible. Examinations of neuroculture reveal ongoing interconnections between art and neuroscience. Scientific imaging processes of the brain render visible invisible phenomena, such as thought and consciousness. Artistic interplay with this type of imaging exposes ambivalent possibilities in what it means to see and think, challenging the scientific understanding of mind and perception. In my studio practice I begin to develop a methodology that ‘excavates’ my subjective neural experiences and interconnects the experience with emerging theories of neuroscience phenomena. Starting with my own experience of the strangeness of neural phenomena and utilizing a process of making that corresponds with the performance of material, I create a series of drawings that resist making the strange familiar. How can I visualize the unknown but maintain a strangeness, an ambiguity, that resists the apprehension of knowability? This thesis examines several works Untitled Light Space, Untitled Darkness, and Untitled Mental Specimen Space and engages with works from other artists and theories surrounding light, perception, neuroscience and the relationship of objectivity and subjectivity in art and science. The thesis includes interludes of poetic writing that reflect on and attempt to convey the odd neural sensations I experienced as a child which are driving forces for some of the work.
Práticas de Ciência Cidadã para promoção da saúde: o caso do Laboratório Internet, Saúde e Sociedade (LaISS) da Fiocruz
Creators: name: Peixoto, Julie Soares de Moraes
name: Soares, Fabiana de Azevedo
name: Brasil, Sabrina da Silva
name: Veiga, Viviane
Publisher: name: Zenodo
Year: 2022

description: Apresentação realizada na sessão Pecha Kucha IV da 13ª Conferência Lusófona de Ciência Aberta, formato híbrido, de 10 a 12 de outubro de 2022.
Fast Mapping of Terahertz Bursting Thresholds and Characteristics at Synchrotron Light Sources
Creators: name: Brosi, Miriam
name: Steinmann, Johannes L.
name: Blomley, Edmund
name: Bründermann, Erik
name: Caselle, Michele
name: Hiller, Nicole
name: Kehrer, Benjamin
name: Nasse, Michael J.
name: Rota, Lorenzo
name: Schedler, Manuel
name: Schönfeldt, Patrik
name: Schuh, Marcel
name: Schwarz, Markus
name: Weber, Marc
name: Müller, Anke-Susanne
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Dedicated optics with extremely short electron bunches enable synchrotron light sources to generate intense coherent THz radiation. The high degree of spatial compression in this so-called low-alpha optics entails a complex longitudinal dynamics of the electron bunches, which can be probed studying the fluctuations in the emitted terahertz radiation caused by the micro-bunching instability ("bursting"). This article presents a "quasi-instantaneous" method for measuring the bursting characteristics by simultaneously collecting and evaluating the information from all bunches in a multi-bunch fill, reducing the measurement time from hours to seconds. This speed-up allows systematic studies of the bursting characteristics for various accelerator settings within a single fill of the machine, enabling a comprehensive comparison of the measured bursting thresholds with theoretical predictions by the bunched-beam theory. This paper introduces the method and presents first results obtained at the ANKA synchrotron radiation facility.
description: 7 pages, 7 figures, to be published in Physical Review Accelerators and Beams
First-Principles Molecular Dynamics Investigation of the Atomic-Scale Energy Transport: From Heat Conduction to Thermal Radiation
Creators: name: Ji, Pengfei
name: Zhang, Yuwen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: First-principles molecular dynamics simulation based on a plane wave/pseudopotential implementation of density functional theory is adopted to investigate atomic scale energy transport for semiconductors (silicon and germanium). By imposing thermostats to keep constant temperatures of the nanoscale thin layers, initial thermal non-equilibrium between the neighboring layers is established under the vacuum condition. Models with variable gap distances with an interval of lattice constant increment of the simulated materials are set up and statistical comparisons of temperature evolution curves are made. Moreover, the equilibration time from non-equilibrium state to thermal equilibrium state of different silicon or/and germanium layers combinations are calculated. The results show significant distinctions of heat transfer under different materials and temperatures combinations. Further discussions on the equilibrium time are made to explain the simulation results. As the first work of the atomic scale energy transport spanning from heat conduction to thermal radiation, the simulation results here highlights the promising application of the first-principles molecular dynamics in thermal engineering.
Spectral, antimicrobial and anticancer activity of E-4-{[(5-bromothiophen-2-yl)methylidene]amino}-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one
Creators: name: M., Sasikala
name: A., Selvan
name: K.S., Nagaraja
name: R., Anuradha
name: Chandran, Karnan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Plant Biology
subject: FOS: Biological sciences
subject: 60506 Virology

description: A Schiff base E-4-{[(5-bromothiophen-2-yl)methylidene]amino}-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (4ATP) has been synthesized by condensation 5-bromothiophene-2-carboxaldehyde with 4-amino antipyrine by condensation. The compound crystallized in the monoclinic system (P21/n) with E-configuration at azomethine C = N bond. The Hirshfeld surface analysis and crystal structure data confirm the intramolecular hydrogen bonding interaction (C-H…O: 2.963 Å) in a conjugated six-membered cyclic structure. The IR, Raman, 1H NMR, 13C NMR and mass spectral studies have been interpreted based on the crystal structure data. The compound is more effective in its cytotoxic activity for the A549 cell line than that of Vero cells.
Estudio de prefactibilidad para el mejoramiento de las calles principales del Barrio las Gaviotas
Creators: name: Patron Hernandez, Maria Angélica
name: Rodriguez Rodriguez, Ramiro Enrique
name: Torres Ortega, Ramon (Director)
Publisher: name: Universidad de Cartagena
Year: 2001
Subjects: Construcción de carreteras
Carreteras - Mantenimiento y reparación

description: Tesis (Ingeniero Civil). Universidad de Cartagena. Facultad de Ciencias E Ingenierías. Programa de Ingeniería Civil, 2001.
description: El presente trabajo tiene por objeto elaborar el estudio de prefactibilidad para el mejoramiento de las calles principales del barrio las Gaviotas.
title: EUnetHTA Joint Action 3 HTA (und mehr) gemeinsam in Europa
Creators: name: Fujita-Rohwerder, Naomi
name: Rüther, Alric
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Im Rahmen der kommenden Joint Action 3 (JA 3) wird die Förderung des europäischen, wissenschaftlich-technischen HTA-Netzwerks EUnetHTA von der EU-Kommission mit 12 Mio. EUR für die Jahre 2016-2019 fortgeführt. Insgesamt 64 Organisationen aus 27 Ländern (EU-Mitgliedstaaten u.[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Gemeinsam informiert entscheiden; 17. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin