cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Рентгенологические наблюдения грыж пищеводного отверстия диафрагмы
title: X-Ray Observations of Hiatal Hernias
Creators: name: Абдулхакова, Дания Аббасовна
name: Абдулхаков, Рустам Аббасович
Publisher: name: Издательский центр СурГУ
Year: 2023

description: Цель – анализ возможностей классических рентгеноскопии и рентгенографии в выявлении
грыж пищеводного отверстия диафрагмы и их осложнений. Выполнены рентгеноскопия и рентгенография
147 пациентам с хиатальными грыжами. Для выявления фиксированных грыж исследование начинали с изучения состояния заднего средостения. Затем проводили исследование пищевода и желудка с бариевой взвесью.
Выявлены аксиальные грыжи у 142 (96,6%) пациентов, из них нефиксированные (перемещающиеся) грыжи пищеводного отверстия диафрагмы – у 97 (68,3%) обследованных. Фиксированные грыжи c рубцовым укорочением пищевода наблюдали у 45 (31,7%) пациентов. У 23 (16,2%) пациентов аксиальные грыжи пищеводного
отверстия диафрагмы сочетались с раком пищевода у 11 (7,7%) или желудка – у 12 (8,5%) больных. У 103 (70%)
пациентов грыжи сопровождались желудочно-пищеводным рефлюксом и эзофагитом, у 89 (60,5%) также эзофагоспазмом. Осложнения грыж пищеводного отверстия диафрагмы были безусловным показанием к операции.
description: The study aims to discuss the possibilities of standard fluoroscopy and radiography in diagnosing a
hiatal hernia and its complications. Fluoroscopy and radiography were performed on 147 patients with hiatal hernias. At first, the posterior mediastinum was examined to detect fixed hiatal hernias. Then, a barium swallow test
was performed. 142 (96.6%) patients were diagnosed with sliding hiatal hernias, with 97 (68.3%) patients having
non-fixed hiatal hernias. Fixed hernias with cicatricial shortening of the esophagus were observed in 45 (31.7%)
patients. 23 (16.2%) patients had axial hiatal hernias and concomitant esophageal cancer in 11 (7.7%) patients or
gastric cancer – in 12 (8.5%) patients. In 103 (70%) patients, hiatal hernias were associated with gastroesophageal
reflux and esophagitis, and additionally with esophagospasm in 89 (60.5%) patients. Patients with complications of
hiatal hernias required surgery.
A minimal model for finite temperature superfluid dynamics
Creators: name: Andersson, N.
name: Krueger, C.
name: Comer, G. L.
name: Samuelsson, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Building on a recently improved understanding of the problem of heat flow in general relativity, we develop a hydrodynamical model for coupled finite temperature superfluids. The formalism is designed with the dynamics of the outer core of a mature neutron star (where superfluid neutrons are coupled to a conglomerate of protons and electrons) in mind, but the main ingredients are relevant for a range of analogous problems. The entrainment between material fluid components (the condensates) and the entropy (the thermal excitations) plays a central role in the development. We compare and contrast the new model to previous results in the literature, and provide estimates for the relevant entrainment coefficients that should prove useful in future applications. Finally, we consider the sound-wave propagation in the system in two simple limits, demonstrating the presence of second sound if the temperature is sub-critical, but absence of this phenomenon above the critical temperature for superfluidity.
description: RevTeX, 1 eps figure
Limited evidence for spatial resource partitioning across temperate grassland biodiversity experiments
Creators: name: Barry, Kathryn E.
name: Van Ruijven, Jasper
name: Mommer, Liesje
name: Bai, Yongfei
name: Beierkuhnlein, Carl
name: Buchmann, Nina
name: De Kroon, Hans
name: Ebeling, Anne
name: Eisenhauer, Nico
name: Guimaraes-Steinicke, Claudia
name: Hildebrandt, Anke
name: Isbell, Forest
name: Milcu, Alexandru
name: Nesshoever, Carsten
name: Reich, Peter B.
name: Roscher, Christiane
name: Sauheitl, Leopold
name: Scherer-Lorenzen, Michael
name: Schmid, Bernhard
name: Tilman, David
name: Von Felten, Stefanie
name: Weigelt, Alexandra
Publisher: name: New York, NY [u.a.] : Wiley
Year: 2020
Subjects: subject: grassland
subject: niche complementarity
subject: niche partitioning
subject: productivity
subject: resource uptake
subject: resources
subject: standing root biomass
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Locally, plant species richness supports many ecosystem functions. Yet, the mechanisms driving these often-positive biodiversity–ecosystem functioning relationships are not well understood. Spatial resource partitioning across vertical resource gradients is one of the main hypothesized causes for enhanced ecosystem functioning in more biodiverse grasslands. Spatial resource partitioning occurs if species differ in where they acquire resources and can happen both above- and belowground. However, studies investigating spatial resource partitioning in grasslands provide inconsistent evidence. We present the results of a meta-analysis of 21 data sets from experimental species-richness gradients in grasslands. We test the hypothesis that increasing spatial resource partitioning along vertical resource gradients enhances ecosystem functioning in diverse grassland plant communities above- and belowground. To test this hypothesis, we asked three questions. (1) Does species richness enhance biomass production or community resource uptake across sites? (2) Is there evidence of spatial resource partitioning as indicated by resource tracer uptake and biomass allocation above- and belowground? (3) Is evidence of spatial resource partitioning correlated with increased biomass production or community resource uptake? Although plant species richness enhanced community nitrogen and potassium uptake and biomass production above- and belowground, we found that plant communities did not meet our criteria for spatial resource partitioning, though they did invest in significantly more aboveground biomass in higher canopy layers in mixture relative to monoculture. Furthermore, the extent of spatial resource partitioning across studies was not positively correlated with either biomass production or community resource uptake. Our results suggest that spatial resource partitioning across vertical resource gradients alone does not offer a general explanation for enhanced ecosystem functioning in more diverse temperate grasslands. © 2019 The Authors. Ecology published by Wiley Periodicals, Inc. on behalf of Ecological Society of America
Hydrolytic biotransformation of the bumetanide ester prodrug DIMAEB to bumetanide by esterases in neonatal human and rat serum and neonatal rat brain : A new treatment strategy for neonatal seizures?
Creators: name: Theilmann, Wiebke
name: Brandt, Claudia
name: Bohnhorst, Bettina
name: Winstroth, Anne-Mieke
name: Das, Anibh Martin
name: Gramer, Martina
name: Kipper, Andi
name: Kalesse, Markus
name: Löscher, Wolfgang
Publisher: name: Oxford [u.a.] : Wiley-Blackwell
Year: 2021
Subjects: subject: blood-brain barrier
subject: BUM5
subject: carboxylesterase
subject: NKCC1
subject: ontogenesis
subject: phenobarbital
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Objectives: The loop diuretic bumetanide has been proposed previously as an adjunct treatment for neonatal seizures because bumetanide is thought to potentiate the action of γ--aminobutyric acid (GABA)ergic drugs such as phenobarbital by preventing abnormal intracellular accumulation of chloride and the subsequent "GABA shift." However, a clinical trial in neonates failed to demonstrate such a synergistic effect of bumetanide, most likely because this drug only poorly penetrates into the brain. This prompted us to develop lipophilic prodrugs of bumetanide, such as the N,N-dimethylaminoethyl ester of bumetanide (DIMAEB), which rapidly enter the brain where they are hydrolyzed by esterases to the parent compound, as demonstrated previously by us in adult rodents. However, it is not known whether esterase activity in neonates is sufficient to hydrolyze ester prodrugs such as DIMAEB. Methods: In the present study, we examined whether esterases in neonatal serum of healthy term infants are capable of hydrolyzing DIMAEB to bumetanide and whether this activity is different from the serum of adults. Furthermore, to extrapolate the findings to brain tissue, we performed experiments with brain tissue and serum of neonatal and adult rats. Results: Serum from 1- to 2-day-old infants was capable of hydrolyzing DIMAEB to bumetanide at a rate similar to that of serum from adult individuals. Similarly, serum and brain tissue of neonatal rats rapidly hydrolyzed DIMAEB to bumetanide. Significance: These data provide a prerequisite for further evaluating the potential of bumetanide prodrugs as add-on therapy to phenobarbital and other antiseizure drugs as a new strategy for improving pharmacotherapy of neonatal seizures. © 2020 The Authors. Epilepsia published by Wiley Periodicals LLC on behalf of International League Against Epilepsy
Production of Small-Scale Alfvén Waves by Ionospheric Depletion, Nonlinear Magnetosphere-Ionosphere Coupling and Phase Mixing
Creators: name: Russell, Alexander J. B.
name: Wright, Andrew N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Rockets and satellites have previously observed small-scale Alfvén waves inside large-scale downward field-aligned currents and numerical simulations have associated their formation with self-consistent magnetosphere-ionosphere coupling. The origin of these waves was previously attributed to ionospheric feedback instability, however we show that they arise in numerical experiments in which the instability is excluded. A new interpretation is proposed in which strong ionospheric depletion and associated current broadening (a nonlinear steepening/wavebreaking process) form magnetosphere-ionosphere waves inside a downward current region and these oscillations drive upgoing inertial Alfvén waves in the overlying plasma. The resulting waves are governed by characteristic periods, which are a good match to previously observed periods for reasonable assumed conditions. Meanwhile, wavelengths perpendicular to the magnetic field initially map to an ionospheric scale comparable to the electron inertial length for the low-altitude magnetosphere, but become shorter with time due to frequency-based phase mixing of boundary waves (a new manifestation of phase mixing). Under suitable conditions, these could act as seeds for the ionospheric feedback instability.
description: Accepted for publication in JGR, 10 pages, 7 figures
Darstellung und Kristallstruktur von NdSe1.9
Creators: name: Urland, W.
name: Plambeck-Fischer, P.
name: Grupe, M.
Publisher: name: Berlin : De Gruyter
Year: 1989
Subjects: subject: Crystal Structure
subject: Synthesis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: NdSe1,9 has been prepared as grey, strongly reflecting platelets by reaction of elemental neodymium with selenium in the ratio 1 :2 and subsequent chemical vapour phase transport with iodine. It crystallizes in the tetragonal space group P42/n with a = 925.36(7), c = 1679.2(3) pm and Z = 20. The structure determination results in a formulation of NdSe1,9 as Nd 20(Se(I)2)8Se(I)2⃞2Se(II)20, where the defect layer built from the Se(I)22- and Se(I)2- ions corresponds to the F layer in the PbFCl substructure.
COVID-19 in the Greater Mekong Subregion : How resilient are rural households?
Creators: name: Waibel, Hermann
name: Grote, Ulrike
name: Min, Shi
name: Nguyen, Trung Thanh
name: Praneetvatakul, Suwanna
Publisher: name: Berlin [u.a.] : Springer
Year: 2020
Subjects: subject: COVID-19
subject: greater Mekong Subregion
subject: resilience
subject: rural households
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::600 | Technik::640 | Hauswirtschaft und Familienleben
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: In this paper we submit some thoughts on the possible implications of the COVID-19 pandemic for rural people in the countries of the Greater Mekong Subregion (GMS). We base our observations and conclusions on our long-term research experience in the region. The paper focuses on the economics of rural households during this crisis period and its aftermath. We conclude that country differences clearly exist due to their different stages of development. However, while rural households belong to the Corona risk groups, they are also resilient to such a shock. We submit that Governments in the GMS should strengthen policies that conserve the safety-net function of rural villages. © 2020, The Author(s).
Diana M Nkesiga Weaved in Spirals. pdf.
Creators: name: Omondi, Francis
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 440504
subject: Gender relations
classificationCode: 440509
subject: Women's studies (incl. girls' studies)

description: Weaved in Spirals, is Rev. Canon Diana M. Nkesiga’s response to a question she was asked: “Do women go into full-time ordained ministry?” Her answer is not in abstraction and academic fluency but in her narrated lived experience.
Mobilization of seed storage lipid by Arabidopsis seedlings is retarded in the presence of exogenous sugars
Creators: name: Reiter, Wolf-Dieter
name: To, Jennifer PC
name: Gibson, Susan I
Publisher: name: BioMed Central Ltd
Year: 2002

description: Abstract Background Soluble sugar levels must be closely regulated in germinating seeds to ensure an adequate supply of energy and building materials for the developing seedling. Studies on germinating cereal seeds indicate that production of sugars from starch is inhibited by increasing sugar levels. Although numerous studies have focused on the regulation of starch metabolism, very few studies have addressed the control of storage lipid metabolism by germinating oilseeds. Results Mobilization of storage lipid by germinating seeds of the model oilseed plant Arabidopsis thaliana (L.) Heynh. occurs at a greatly reduced rate in the presence of exogenous glucose or mannose, but not in the presence of equi-molar 3-O-methylglucose or sorbitol. The sugar-insensitive5-1/abscisic acid-insensitive4-101 (sis5-1/abi4-101) mutant is resistant to glucose inhibition of seed storage lipid mobilization. Wild-type seedlings become insensitive to glucose inhibition of storage lipid breakdown within 3 days of the start of imbibition. Conclusions Growth in the presence of exogenous glucose significantly retards mobilization of seed storage lipid in germinating seeds from wild-type Arabidopsis. This effect is not solely due to the osmotic potential of the media, as substantially higher concentrations of sorbitol than of glucose are required to exert significant effects on lipid breakdown. The inhibitory effect of glucose on lipid breakdown is limited to a narrow developmental window, suggesting that completion of some critical metabolic transition results in loss of sensitivity to the inhibitory effect of glucose on lipid breakdown.
Theoretical dimensioning and sizing limits of hybrid energy storage systems
Creators: name: Günther, Sebastian
name: Bensmann, Astrid
name: Hanke-Rauschenbach, Richard
Publisher: name: Amsterdam : Elsevier Science
Year: 2018
Subjects: subject: Hybrid energy storage systems
subject: Dimensioning
subject: Sizing
subject: Pre-dimensioning
subject: Hybridisation potential
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Aim of a storage hybridisation is a beneficial usage or combination of different storage technologies with various characteristics to downsize the overall system, decrease the costs or to increase the lifetime, system efficiency or performance. In this paper, the point of interest is a different ratio of power to energy (specific power) of two storages to create a hybrid energy storage system (HESS) with a resulting specific power that better matches the requirements of the application. The approach enables a downsizing of the overall system compared to a single storage system and consequently decreases costs. The paper presents a theoretical and analytical benchmark calculation that determines the maximum achievable hybridisation, i.e. possible spread in specific power, while retaining the original total energy and power capacities of an equivalent single storage system. The theory is independent from technology, topology, control strategy, and application and provides a unified view on hybrid energy storage systems. It serves as a pre-dimensioning tool and first step within a larger design process. Furthermore, it presents a general approach to choose storage combinations and to characterize the potential of an application for hybridisation. In this context, a Hybridisation Diagram is proposed and integral Hybridisation Parameters are introduced.
title: Sebastian Brather, Ethnische Interpretationen in der frühgeschichtlichen Archäologie. Geschichte, Grundlagen und Alternativen
Creators: name: Koch, Ursula
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Sebastian Brather, Ethnische Interpretationen in der frühgeschichtlichen Archäologie. Geschichte, Grundlagen und Alternativen. Ergänzungsbände zum Reallexikon der Germanischen Altertumskunde 42. Verlag Walther de Gruyter, Berlin/New York 2004. 807 Seiten, 94 Abbildungen, 25 Tabellen.
Quantum Diffusion with Drift and the Einstein Relation I
Creators: name: De Roeck, Wojciech
name: Froehlich, Juerg
name: Schnelli, Kevin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the dynamics of a quantum particle hopping on a simple cubic lattice and driven by a constant external force. It is coupled to an array of identical, independent thermal reservoirs consisting of free, massless Bose fields, one at each site of the lattice. When the particle visits a site x of the lattice it can emit or absorb field quanta of the reservoir at x. Under the assumption that the coupling between the particle and the reservoirs and the driving force are sufficiently small, we establish the following results: The ergodic average over time of the state of the particle approaches a non-equilibrium steady state (NESS) describing a non-zero mean drift of the particle. Its motion around the mean drift is diffusive, and the diffusion constant and the drift velocity are related to one another by the Einstein relation.
description: 31 pages, some proofs are contained in the joint arxiv submission 'Quantum Diffusion with Drift and the Einstein Relation II'
title: Stefanie Berg-Hobohm, Die germanische Siedlung Göritz, Lkr. Oberspreewald-Lausitz
Creators: name: Hegewisch, Morten
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Stefanie Berg-Hobohm, Die germanische Siedlung Göritz, Lkr. Oberspreewald Lausitz. Forschungen zur Archäologie im Land Brandenburg 7. Landesdenkmalamt Brandenburg, Wünsdorf 2004. 422 Seiten, 77 Abbildungen, 54 Tabellen, 167 Tafeln, 1 Faltblatt des Gesamtplanes.
The elastic depinning transition of vortex lattices in two dimensions
Creators: name: Di Scala, N.
name: Olive, E.
name: Lansac, Y.
name: Fily, Y.
name: Soret, J. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Large scale numerical simulations are used to study the elastic dynamics of two-dimensional vortex lattices driven on a disordered medium in the case of weak disorder. We investigate the so-called elastic depinning transition by decreasing the driving force from the elastic dynamical regime to the state pinned by the quenched disorder. Similarly to the plastic depinning transition, we find results compatible with a second order phase transition, although both depinning transitions are very different from many viewpoints. We evaluate three critical exponents of the elastic depinning transition. $β= 0.29 \pm 0.03$ is found for the velocity exponent at zero temperature, and from the velocity-temperature curves we extract the critical exponent $δ^{-1} = 0.28 \pm 0.05$. Furthermore, in contrast with charge-density waves, a finite-size scaling analysis suggests the existence of a unique diverging length at the depinning threshold with an exponent $ν= 1.04 \pm 0.04$, which controls the critical force distribution, the finite-size crossover force distribution and the intrinsic correlation length. Finally, a scaling relation is found between velocity and temperature with the $β$ and $δ$ critical exponents both independent with regard to pinning strength and disorder realizations.
description: 17 pages, 10 figures
Towards a transportable aluminium ion quantum logic optical clock
Creators: name: Hannig, Stephan
name: Pelzer, L.
name: Scharnhorst, N.
name: Kramer, J.
name: Stepanova, M.
name: Xu, Z.T.
name: Spethmann, N.
name: Leroux, I.D.
name: Mehlstäubler, Tanja E.
name: Schmidt, Piet O.
Publisher: name: American Institute of Physics : [S.l.]
Year: 2019
Subjects: subject: Aluminum
subject: Atomic clocks
subject: Calcium
subject: Ions
subject: Optical variables measurement
subject: Quantum theory
subject: Trapped ions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: With the advent of optical clocks featuring fractional frequency uncertainties on the order of 10-17 and below, new applications such as chronometric leveling with few-centimeter height resolution emerge. We are developing a transportable optical clock based on a single trapped aluminum ion, which is interrogated via quantum logic spectroscopy. We employ singly charged calcium as the logic ion for sympathetic cooling, state preparation, and readout. Here, we present a simple and compact physics and laser package for manipulation of 40Ca+. Important features are a segmented multilayer trap with separate loading and probing zones, a compact titanium vacuum chamber, a near-diffraction-limited imaging system with high numerical aperture based on a single biaspheric lens, and an all-in-fiber 40Ca+ repump laser system. We present preliminary estimates of the trap-induced frequency shifts on 27Al+, derived from measurements with a single calcium ion. The micromotion-induced second-order Doppler shift for 27Al+ has been determined to be δνEMMν=-0.4-0.3 +0.4×10-18 and the black-body radiation shift is δνBBR/ν = (-4.0 ± 0.4) × 10-18. Moreover, heating rates of 30 (7) quanta per second at trap frequencies of ωrad,Ca+ ≈ 2π × 2.5 MHz (ωax,Ca+ ≈ 2π × 1.5 MHz) in radial (axial) direction have been measured, enabling interrogation times of a few hundreds of milliseconds.
A multi-center population-based case-control study of ovarian cancer in African-American women: the African American Cancer Epidemiology Study (AACES)
Creators: name: Crankshaw, Sydnee
name: Moorman, Patricia G.
name: Alberg, Anthony J.
name: Schildkraut, Joellen M.
name: Bandera, Elisa V.
name: Terry, Paul
name: Wang, Frances
name: Peters, Edward
name: Wallace, Kristin
name: Schwartz, Ann G.
name: Bondy, Melissa
name: Funkhouser, Ellen
name: Barnholtz-Sloan, Jill
name: Akushevich, Lucy
name: Cote, Michelle L.
Publisher: name: BioMed Central Ltd
Year: 2014

description: Abstract: Background: Ovarian cancer (OVCA) is the leading cause of death from gynecological cancer, with poorer survival for African American (AA) women compared to whites. However, little is known about risk factors for OVCA in AA. To study the epidemiology of OVCA in this population, we started a collaborative effort in 10 sites in the US. Here we describe the study and highlight the challenges of conducting a study of a lethal disease in a minority population. Methods: The African American Cancer Epidemiology Study (AACES) is an ongoing, population-based case–control study of OVCA in AA in 10 geographic locations, aiming to recruit 850 women with invasive epithelial OVCA and 850 controls age- and geographically-matched to cases. Rapid case ascertainment and random-digit-dialing systems are in place to ascertain cases and controls, respectively. A telephone survey focuses on risk factors as well as factors of particular relevance for AAs. Food-frequency questionnaires, follow-up surveys, biospecimens and medical records are also obtained. Results: Current accrual of 403 AA OVCA cases and 639 controls exceeds that of any existing study to date. We observed a high proportion (15%) of deceased non-responders among the cases that in part is explained by advanced stage at diagnosis. A logistic regression model did not support that socio-economic status was a factor in advanced stage at diagnosis. Most risk factor associations were in the expected direction and magnitude. High BMI was associated with ovarian cancer risk, with multivariable adjusted ORs and 95% CIs of 1.50 (0.99-2.27) for obese and 1.27 (0.85- 1.91) for morbidly obese women compared to normal/underweight women. Conclusions: AACES targets a rare tumor in AAs and addresses issues most relevant to this population. The importance of the study is accentuated by the high proportion of OVCA cases ascertained as deceased. Our analyses indicated that obesity, highly prevalent in this population (>60% of the cases), was associated with increased OVCA risk. While these findings need to be replicated, they suggest the potential for an effective intervention on the risk in AAs. Upon completion of enrollment, AACES will be the largest epidemiologic study of OVCA in AA women.
title: Christof Berns, Untersuchungen zu den Grabbauten der frühen Kaiserzeit in Kleinasien
Creators: name: Plattner, Georg A.
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Christof Berns, Untersuchungen zu den Grabbauten der frühen Kaiserzeit in Kleinasien. Asia Minor Studien 51. Verlag Dr. Rudolf Habelt, Bonn 2003. X und 281 Seiten, 32 Tafeln.
In Vitro Antibacterial Activity of Selected Palestinian Medicinal Plants against Chlamydia trachomatis
Creators: name: Hamarsheh, Omar
name: Amro, Ahmad
name: Al-Zeer, Munir A.
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 570 Biowissenschaften; Biologie
subject: antibacterial activity
subject: Chlamydia trachomatis
subject: medicinal plants
subject: Palestine

description: Chlamydia spp. are intracellular pathogens of humans and animals that cause a wide range of diseases such as blinding trachoma and sexually transmitted infections. According to the World Health Organization (WHO), there are more than 127 million new infections each year worldwide. Chlamydial urogenital infections can cause cervicitis, urethritis, pelvic inflammatory disease and infertility. From within an intracellular niche, termed an inclusion, the Chlamydiae complete their life cycle shielded from host defenses. The host cell defense response used to eliminate the pathogen must subvert this protective shield and is thought to involve the gamma interferon-inducible family of immunity related GTPase proteins and nitric oxide. Typically, azithromycin and doxycycline are the first line drugs for the treatment of chlamydial infections. Although C. trachomatis is sensitive to these antibiotics in vitro, currently, there is increasing bacterial resistance to antibiotics including multidrug-resistant C. trachomatis, which have been described in many instances. Therefore, alternative drug candidates against Chlamydia should be assessed in vitro. In this study, we tested and quantified the activity of plant extracts against Chlamydia-infected HeLa cells with C. trachomatis inclusions. The in vitro results show that post-treatment with Artemisia inculta Delile extract significantly inhibits Chlamydia infection compared to DMSO-treated samples. In conclusion, plant extracts may contain active ingredients with antichlamydial activity potential and can be used as alternative drug candidates for treatment of Chlamydia infection which has significant socio-economic and medical impact.
title: Eckart Olshausen und Holger Sonnabend (Hrsg.), Zu Wasser und zu Land. Verkehrswege in der antiken Welt
Creators: name: Kolb, Anne
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Eckart Olshausen und Holger Sonnabend (Hrsg.), Zu Wasser und zu Land. Verkehrswege in der antiken Welt. Stuttgarter Kolloquium zur historischen Geographie des Altertums 7. Geographica Historica 17. Steiner, Stuttgart 2002. 492 Seiten, 131 Abbildungen, 4 Tabellen, 1 Faltplan.
Book Review Diana M Nkesiga.pdf
Creators: name: Omondi, Francis
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 440504
subject: Gender relations
classificationCode: 440509
subject: Women's studies (incl. girls' studies)

description: Weaved in Spirals, is Rev. Canon Diana M. Nkesiga’s response to a question she was asked: “Do women go into full-time ordained ministry?” Her answer is not in abstraction and academic fluency but in her narrated lived experience.
Competing states in the SU(3) Heisenberg model on the honeycomb lattice: Plaquette valence-bond crystal versus dimerized color-ordered state
Creators: name: Corboz, Philippe
name: Lajkó, Miklós
name: Penc, Karlo
name: Mila, Frédéric
name: Läuchli, Andreas M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Conflicting predictions have been made for the ground state of the SU(3) Heisenberg model on the honeycomb lattice: Tensor network simulations found a plaquette order [Zhao et al, Phys. Rev. B 85, 134416 (2012)], where singlets are formed on hexagons, while linear flavor-wave theory (LFWT) suggested a dimerized, color ordered state [Lee and Yang, Phys. Rev. B 85, 100402 (2012)]. In this work we show that the former state is the true ground state by a systematic study with infinite projected-entangled pair states (iPEPS), for which the accuracy can be systematically controlled by the so-called bond dimension $D$. Both competing states can be reproduced with iPEPS by using different unit cell sizes. For small $D$ the dimer state has a lower variational energy than the plaquette state, however, for large $D$ it is the latter which becomes energetically favorable. The plaquette formation is also confirmed by exact diagonalizations and variational Monte Carlo studies, according to which both the dimerized and plaquette states are non-chiral flux states.
description: 11 pages, 12 figures, small changes, added more references
Dianthus caesius
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. caesius X tomentosus - l-2: Outre-Rhone und Gegend von Fully (Garns). - 3: Visp (Focke).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Halpha3: an Halpha imaging survey of HI selected galaxies from ALFALFA. II. The star formation properties of galaxies in the Virgo cluster and surroundings
Creators: name: Gavazzi, Giuseppe
name: Fumagalli, Michele
name: Fossati, Matteo
name: Galardo, Vincenzo
name: Grossetti, Francesco
name: Boselli, Alessandro
name: Giovanelli, Riccardo
name: Haynes, Martha P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the analysis of Halpha3, an Halpha imaging survey of 409 galaxies selected from the HI Arecibo ALFALFA Survey in the Local Supercluster, including the Virgo cluster. We explore the relations between the stellar mass, the HI mass and the current, massive SFR of nearby galaxies in the Virgo cluster and we compare them with those of isolated galaxies in the Local Supercluster, disentangling the role of the environment in shaping the star formation properties of galaxies at the present cosmological epoch. We investigate the relationships between atomic neutral gas and newly formed stars in different environments, across many morphological types, and over a wide range of stellar masses adopting an updated calibration of the HI deficiency parameter. Studying the mean properties of late-type galaxies in the Local Supercluster, we find that galaxies in increasing local galaxy density conditions (or decreasing projected angular separation from M87) show a significant decrease in the HI content and in the mean specific star formation rate, along with a progressive reddening of their stellar populations. The gradual quenching of the star formation occurs outside-in, consistently with the predictions of the ram pressure model. Once considered as a whole, the Virgo cluster is effective in removing neutral hydrogen from galaxies, and this perturbation is strong enough to appreciably reduce the SFR of its entire galaxy population. An estimate of the present infall rate of 300-400 galaxies per Gyr in the Virgo cluster is obtained from the number of existing HI-rich late-type systems, assuming 200-300 Myr as the time scale for HI ablation. If the infall process has been acting at constant rate this would imply that the Virgo cluster has formed approximately 2 Gyr ago, consistently with the idea that Virgo is in a young state of dynamical evolution.
description: 13 pages, 10 figures, 4 tables, A&A accepted, language edited
Detection of gravitational-wave signals from binary neutron star mergers using machine learning
Creators: name: Schäfer, Martin B.
name: Ohme, Frank
name: Nitz, Alexander H.
Publisher: name: College Park, MD : American Physical Society
Year: 2020
Subjects: subject: Condensed matter
subject: Nuclear physics
subject: Particles (Nuclear physics)
subject: Quantum gravity
subject: General relativity (Physics)
subject: Gravitation
subject: Fluid dynamics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: As two neutron stars merge, they emit gravitational waves that can potentially be detected by Earth-bound detectors. Matched-filtering-based algorithms have traditionally been used to extract quiet signals embedded in noise. We introduce a novel neural-network-based machine learning algorithm that uses time series strain data from gravitational-wave detectors to detect signals from nonspinning binary neutron star mergers. For the Advanced LIGO design sensitivity, our network has an average sensitive distance of 130 Mpc at a false-alarm rate of ten per month. Compared to other state-of-the-art machine learning algorithms, we find an improvement by a factor of 4 in sensitivity to signals with a signal-to-noise ratio between 8 and 15. However, this approach is not yet competitive with traditional matched-filtering-based methods. A conservative estimate indicates that our algorithm introduces on average 10.2 s of latency between signal arrival and generating an alert. We give an exact description of our testing procedure, which can be applied not only to machine-learning-based algorithms but all other search algorithms as well. We thereby improve the ability to compare machine learning and classical searches. © 2020 authors. Published by the American Physical Society.
Characterizing the continuous gravitational-wave signal from boson clouds around Galactic isolated black holes
Creators: name: Zhu, Sylvia J.
name: Baryakhtar, Masha
name: Papa, Maria Alessandra
name: Tsuna, Daichi
name: Kawanaka, Norita
name: Eggenstein, Heinz-Bernd
Publisher: name: College Park, MD : American Physical Society
Year: 2020
Subjects: subject: Condensed matter
subject: Nuclear physics
subject: Particles (Nuclear physics)
subject: Quantum gravity
subject: General relativity (Physics)
subject: Gravitation
subject: Fluid dynamics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Ultralight bosons can form large clouds around stellar-mass black holes via the superradiance instability. Through processes such as annihilation, these bosons can source continuous gravitational-wave signals with frequencies within the range of LIGO and Virgo. If boson annihilation occurs, then the Galactic black hole population will give rise to many gravitational signals; we refer to this as the ensemble signal. We characterize the ensemble signal as observed by the gravitational-wave detectors; this is important because the ensemble signal carries the primary signature that a continuous wave signal has a boson annihilation origin. We explore how a broad set of black hole population parameters affects the resulting spin-0 boson annihilation signal and consider its detectability by recent searches for continuous gravitational waves. A population of 108 black holes with masses up to 30M and a flat dimensionless initial spin distribution between zero and unity produces up to 1000 signals loud enough in principle to be detected by these searches. For a more moderately spinning population, the number of signals drops by about an order of magnitude, still yielding up to 100 detectable signals for some boson masses. A nondetection of annihilation signals at frequencies between 100 and 1200 Hz disfavors the existence of scalar bosons with rest energies between 2×10-13 and 2.5×10-12 eV. Finally, we show that, depending on the black hole population parameters, care must be taken in assuming that the continuous wave upper limits from searches for isolated signals are still valid for signals that are part of a dense ensemble: Between 200 and 300 Hz, we urge caution when interpreting a null result for bosons between 4×10-13 and 6×10-13 eV. © 2020 authors. Published by the American Physical Society. Published by the American Physical Society.
Quantum Diffusion with Drift and the Einstein Relation II
Creators: name: De Roeck, Wojciech
name: Froehlich, Juerg
name: Schnelli, Kevin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This paper is a companion to 'Quantum Diffusion with Drift and the Einstein Relation I' (jointly submitted to arXiv). Its purpose is to describe and prove a certain number of technical results used in 'Quantum Diffusion with Drift and the Einstein Relation I', but not proven there. Both papers concern long-time properties (diffusion, drift) of the motion of a driven quantum particle coupled to an array of thermal reservoirs. The main technical results derived in the present paper are $(1)$ an asymptotic perturbation theory applicable for small driving, and, $(2)$ the construction of time-dependent correlation functions of particle observables.
description: 34 pages, joint submission to arXiv with 'Quantum Diffusion with Drift and the Einstein Relation I'
Measurement of cortisol in saliva: a comparison of measurement error within and between international academic-research laboratories
Creators: name: Findlay, Helen
name: De, Alpana
name: Granger, Douglas A
name: Benson, Victoria B
name: Rus, Holly M
name: Lupien, Sonia
name: Walker, Claire-Dominique
name: Klawitter, Heiko
name: Bristow, Matt
name: Brindle, Eleanor
name: Hodges, Eric
name: Entringer, Sonja
name: Heim, Christine
name: Chen, Frances R
name: Calvi, Jessica L
name: Tiemensma, Jitske
name: Verlezza, Silvanna
Publisher: name: BioMed Central
Year: 2017

description: Abstract Objective Hundreds of scientific publications are produced annually that involve the measurement of cortisol in saliva. Intra- and inter-laboratory variation in salivary cortisol results has the potential to contribute to cross-study inconsistencies in findings, and the perception that salivary cortisol results are unreliable. This study rigorously estimates sources of measurement variability in the assay of salivary cortisol within and between established international academic-based laboratories that specialize in saliva analyses. One hundred young adults (Mean age: 23.10 years; 62 females) donated 2 mL of whole saliva by passive drool. Each sample was split into multiple- 100 µL aliquots and immediately frozen. One aliquot of each of the 100 participants’ saliva was transported to academic laboratories (N = 9) in the United States, Canada, UK, and Germany and assayed for cortisol by the same commercially available immunoassay. Results 1.76% of the variance in salivary cortisol levels was attributable to differences between duplicate assays of the same sample within laboratories, 7.93% of the variance was associated with differences between laboratories, and 90.31% to differences between samples. In established-qualified laboratories, measurement error of salivary cortisol is minimal, and inter-laboratory differences in measurement are unlikely to have a major influence on the determined values.
Supersmoothing through slow contraction
Creators: name: Cook, William G.
name: Glushchenko, Iryna A.
name: Ijjas, Anna
name: Pretorius, Frans
name: Steinhardt, Paul J.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2020
Subjects: subject: Bouncing cosmology
subject: Cosmological bounce
subject: Cyclic universe
subject: Slow contraction
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Performing a fully non-perturbative analysis using the tools of numerical general relativity, we demonstrate that a period of slow contraction is a “supersmoothing” cosmological phase that homogenizes, isotropizes and flattens the universe both classically and quantum mechanically and can do so far more robustly and rapidly than had been realized in earlier studies. © 2020 The Author(s)
Generation of renewable mouse intestinal epithelial cell monolayers and organoids for functional analyses
Creators: name: Quinney, Nancy L
name: Gentzsch, Martina
name: Moorefield, Emily C
name: Ding, Shengli
name: Blue, R. Eric
Publisher: name: BioMed Central
Year: 2018

description: Abstract
                Background
                Conditional reprogramming has enabled the development of long-lived, normal epithelial cell lines from mice and humans by in vitro culture with ROCK inhibitor on a feeder layer. We applied this technology to mouse small intestine to create 2D mouse intestinal epithelial monolayers (IEC monolayers) from genetic mouse models for functional analysis.
                Results
                IEC monolayers form epithelial colonies that proliferate on a feeder cell layer and are able to maintain their genotype over long-term passage. IEC monolayers form 3D spheroids in matrigel culture and monolayers on transwell inserts making them useful for functional analyses. IEC monolayers derived from the Cystic Fibrosis (CF) mouse model CFTR ∆F508 fail to respond to CFTR activator forskolin in 3D matrigel culture as measured by spheroid swelling and transwell monolayer culture via Ussing chamber electrophysiology. Tumor IEC monolayers generated from the ApcMin/+ mouse intestinal cancer model grow more quickly than wild-type (WT) IEC monolayers both on feeders and as spheroids in matrigel culture.
                Conclusions
                These results indicate that generation of IEC monolayers is a useful model system for growing large numbers of genotype-specific mouse intestinal epithelial cells that may be used in functional studies to examine molecular mechanisms of disease and to identify and assess novel therapeutic compounds.
Deep-learning continuous gravitational waves : Multiple detectors and realistic noise
Creators: name: Dreissigacker, Christoph
name: Prix, Reinhard
Publisher: name: College Park, MD : American Physical Society
Year: 2020
Subjects: subject: Condensed matter
subject: Nuclear physics
subject: Particles (Nuclear physics)
subject: Quantum gravity
subject: General relativity (Physics)
subject: Gravitation
subject: Fluid dynamics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The sensitivity of wide-parameter-space searches for continuous gravitational waves is limited by computational cost. Recently it was shown that deep neural networks (DNNs) can perform all-sky searches directly on (single-detector) strain data [C. Dreissigacker, Phys. Rev. D 100, 044009 (2019)PRVDAQ2470-001010.1103/PhysRevD.100.044009], potentially providing a low-computing-cost search method that could lead to a better overall sensitivity. Here we expand on this study in two respects: (i) using (simulated) strain data from two detectors simultaneously, and (ii) training for directed (i.e., single sky-position) searches in addition to all-sky searches. For a data time span of T=105 s, the all-sky two-detector DNN is about 7% less sensitive (in amplitude h0) at low frequency (f=20 Hz), and about 51% less sensitive at high frequency (f=1000 Hz) compared to fully-coherent matched-filtering (using weave). In the directed case the sensitivity gap compared to matched-filtering ranges from about 7%-14% at f=20 Hz to about 37%-49% at f=1500 Hz. Furthermore we assess the DNN's ability to generalize in signal frequency, spin down and sky-position, and we test its robustness to realistic data conditions, namely gaps in the data and using real LIGO detector noise. We find that the DNN performance is not adversely affected by gaps in the test data or by using a relatively undisturbed band of LIGO detector data instead of Gaussian noise. However, when using a more disturbed LIGO band for the tests, the DNN's detection performance is substantially degraded due to the increase in false alarms, as expected. © 2020 authors.
Dianthus caesius
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. caesius X ulmifolius - l: Vernayaz-Salvan (J.). - 2: Gegend von Fully (Garns). - 3: Riddes (Besse). - 3a: Eine wahrscheinlich hierher gehörende Pflanze: Gondo (Becherer, det. E. Oberholzer).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556