cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hessian of the natural Hermitian form on twistor spaces
Creators: name: Deschamps, Guillaume
name: Du, Noël Le
name: Mourougane, Christophe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We compute the hessian of the natural Hermitian form successively on the Calabi family of a hyperkähler manifold, on the twistor space of a 4-dimensional anti-self-dual Riemannian manifold and on the twistor space of a quaternionic Kähler manifold. We show a strong convexity property of the cycle space of twistor lines on the Calabi family of a hyperkähler manifold. We also prove convexity properties of the 1-cycle space of the twistor space of a 4-dimensional anti-self-dual Einstein manifold of non-positive scalar curvature and of the 1-cycle space of the twistor space of a quaternionic Kähler manifold of non-positive scalar curvature. We check that no non-Kähler strong KT manifold occurs as such a twistor space.
Impact of silicon nutrition on barley plants under potassium deficiency or drought stress : insight into transcriptional, hormonal and metabolic regulation
Creators: name: Beier, Seyedeh Sara
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 631

description: Silicon (Si) as beneficial element in plant nutrition has been shown to increase tolerance to biotic and abiotic stresses. Potassium (K) deficiency and drought are two major abiotic stresses in agriculture. In this study, physiological analyses revealed that under long- or short-term K deficiency conditions, Si nutrition enhanced remobilization of vacuolar root K pools and root-to-shoot translocation, which restored K-dependent metabolic processes in shoots for the sake of continued assimilate provision to roots. Under drought stress, Si induced drought tolerance mainly via improved water content and reconstituted hormonal homeostasis in leaves, in particular by suppressed abscisic acid. Altogether, this study reveals novel regulatory patterns conferred by Si under low K and drought stress, which can improve Si application in plant production to foster sustainable agriculture.
description: Silizium (Si) als nützliches Element in der Pflanzenernährung erhöht nachweislich die Toleranz gegenüber biotischen und abiotischen Stressfaktoren. Kalium (K)-Mangel und Trockenheit sind zwei wichtige abiotische Stressfaktoren in der Landwirtschaft. In dieser Studie ergaben physiologische Analysen, dass die Si-Ernährung unter lang- oder kurzfristigen K-Mangelbedingungen die Remobilisierung der vakuolären K-Reservoirs in den Wurzeln und die Verlagerung von der Wurzel in den Spross verbesserte, wodurch die K-abhängigen Stoffwechselprozesse in den Sprossen wiederhergestellt wurden, um eine kontinuierliche Versorgung der Wurzeln mit Assimilaten zu gewährleisten. Bei Trockenstress induzierte Si die Trockentoleranz vor allem über einen verbesserten Wassergehalt und stellte die hormonelle Homöostase in den Blättern wieder her, insbesondere durch die Unterdrückung von Abscisinsäure. Insgesamt zeigt diese Studie neuartige Regulationsmuster auf, die durch Si bei niedrigem K-Gehalt und Trockenstress vermittelt werden und die den Einsatz von Si in der Pflanzenproduktion verbessern können, um eine nachhaltige Landwirtschaft zu fördern.
MOCVD production tool for high speed electronic devices
Creators: name: Heuken, M.
name: Juergensen, H.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Multiwafer metalorganic vapor phase epitaxy (MOVPE) present several advantages over other epitaxial growth technologies. These production oriented advantages are extremely uniformity of layer thickness, doping and composition, low defect density and highly efficient utilization of the precursor. These advantages result in a low cost of ownership and in a low cost for the epilayer growth process. In this contribution the status of the current industrial standard of the AIXTRON Planetary Reactor® currently used in production for HFET, HBT, LED, lasers and detectors is reviewed. The main features of this reactor concept is the high flexibility in reactor size (15 x 2", 35 x 2", 9 x 4", 5 x 6" wafer load) and the automated cassette-to-cassette wafer loading system. Starting with the industrial specifications required for the epitaxial growth of electronic devices such as layer thickness uniformity of less than 1%, p and n type doping uniformity of 1% and a defect density on the wafer of less than 1 cm2 we show the recently obtained results from industrial applications. Production processes for HFET used in MMIC and for HBT applied in mobile communication systems will be discussed in detail. Further challenges arising from high speed optoelectronic devices such as the handling of phosphorous containing compounds will be shown to give an idea for further applications of the MOVPE process.
Consistency of multidimensional combinatorial substitutions
Creators: name: Jolivet, Timo
name: Kari, Jarkko
Publisher: name: arXiv
Year: 2011
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Multidimensional combinatorial substitutions are rules that replace symbols by finite patterns of symbols in $\mathbb Z^d$. We focus on the case where the patterns are not necessarily rectangular, which requires a specific description of the way they are glued together in the image by a substitution. Two problems can arise when defining a substitution in such a way: it can fail to be consistent, and the patterns in an image by the substitution might overlap. We prove that it is undecidable whether a two-dimensional substitution is consistent or overlapping, and we provide practical algorithms to decide these properties in some particular cases.
description: 13 pages, v2 includes corrections to match the published version
Change of gm(f) in LT-GaAs and LT-Al0.3Ga0.7As MISFETs with thermal stress
Creators: name: Rao, Rapeta V.V.V.J.
name: Chong, T.C.
name: Tan, L.S.
name: Lau, W.S.
name: Alphones, Arokiaswami
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: GaAs and Al0.3Ga0.7As layers grown by MBE at low temperatures (LT) and subsequently annealed at normal growth temperature (600°C) were used as insulators in the gate structure of GaAs MISFETs. We observed improvement in the transconductance (gm) frequency dispersion characteristics of MISFET devices when compared to that of MESFETs. The high resistivity of in-situ annealed LT-grown insulator layers are due to arsenic precipitates and deep centres. Under long-term operation these defects might migrate towards the interface and deteriorate the gn, frequency dispersion characteristics. To validate these MISFET devices for long-term operation, gm frequency dispersion studies were carried out before and after thermal stressing.
Pathogen spill-over : directionality and impact on biodiversity and the ecosystem service of pollination
Creators: name: Tehel, Anja
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 570

description: In den letzten Jahren haben Veränderungen in der Anzahl der Wildbienen aufgrund ihres wichtigen Beitrags zur Bestäubung große Aufmerksamkeit erregt. RNA-Viren, die von Honigbienen auf andere Blütenbesucher übergehen, werden als ein möglicher Grund für den Rückgang der Wildbienen genannt. Zahlreiche Studien zeigten bereits, dass honigbienenassoziierte Viren wie das Flügeldeformationsvirus (DWV) oder das Schwarze Königinnenzellenvirus (BQCV) in vielen Bienenarten vorkommen. Trotz ihrer Präsenz in Wildbienen sind die Übertragung der Viren und ihre Auswirkungen auf die verschiedenen potenziellen Wirte jedoch noch nicht vollständig geklärt. Um eine mögliche Schädigung von Wildbienen zu bewerten, habe ich kontrollierte Experimente mit gut charakterisierten viralen Inokula durchgeführt. Meine Ergebnisse verdeutlichen die potenzielle Gefahr einer Virusübertragung von Honigbienen auf Wildbienen, unterstreichen aber auch die Bedeutung zusätzlicher Studien unter realistischen Feldbedingungen.
description: Over recent years, changes in the abundance of wild bees have gained wide attention due to their important contribution to the ecosystem service of pollination. Viruses spilling over from honey bees into other flower visitors are suggested as one out of many possible reasons for wild bee decline. Already many studies have shown honey bee associated RNA viruses like deformed wing virus (DWV) or black queen cell virus (BQCV) at high prevalence in a variety of bee species. However, despite their presence in wild bees, the transmission of the mentioned viruses as well as the effect on the different potential hosts is not fully understood. To evaluate the possible harm by these viruses on wild bees, I performed highly controlled experiments with well characterised viral inocula. My results highlight the potential threat of viral spill-over from honey bees to wild bee species, though they also underscore the importance of additional studies under field-realistic conditions.
Supersymmetric holography on AdS3
Creators: name: Candu, Constantin
name: Gaberdiel, Matthias R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The proposed duality between Vasiliev's supersymmetric higher spin theory on AdS3 and the 't Hooft limit of the 2d superconformal Kazama-Suzuki models is analysed in detail. In particular, we show that the partition functions of the two theories agree in the large N limit.
description: 25 pages, 3 figures, improved fig. 3
Additional file 5: of Helicobacter pylori CagA promotes epithelial mesenchymal transition in gastric carcinogenesis via triggering oncogenic YAP pathway
Creators: name: Li, Nianshuang
name: Feng, Yan
name: Hu, Yi
name: He, Cong
name: Xie, Chuan
name: Ouyang, Yaobin
name: Artim, Stephen C.
name: Huang, Deqiang
name: Zhu, Yin
name: Luo, Zhijun
name: Ge, Zhongming
name: Lu, Nonghua
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Table S2. Correlation of TAZ expression and clinic pathological status of the patient with GC. (DOCX 14 kb)
Dynamics of Rotation of Super-Earths
Creators: name: Callegari, Nelson
name: Rodríguez, Adrian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We numerically investigate the dynamics of rotation of several close-in terrestrial exoplanet candidates. In our model, the rotation of the planet is disturbed by the torque of the central star due to the asymmetric equilibrium figure of the planet. We model the shape of the planet by a Jeans spheroid. We use surfaces of section and spectral analysis to explore numerically the rotation phase space of the systems adopting different sets of parameters and initial conditions close to the main spin-orbit resonant states. One of the parameters, the orbital eccentricity, is critically discussed here within the domain of validity of orbital circularization timescales given by tidal models. We show that, depending on some parameters of the system like the radius and mass of the planet, eccentricity etc, the rotation can be strongly perturbed and a chaotic layer around the synchronous state may occupy a significant region of the phase space. 55 Cnc e is an example.
description: In Press. Celestial Mechanics and Dynamical Astronomy. 30 pages, 9 figures
Einfluss von hochreaktiven Dicarbonylen auf die Alterung von mesenchymalen Stammzellen und die Differenzierung zu Fettzellen
Creators: name: Garbe-Weber, Susan
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 610

description: Die Developmental Origin of Health and Disease (DOHaD)-Hypothese von Barker wies einen Zusammenhang zwischen ungünstigen Einflüssen in der Embryonalentwicklung und dem Auftreten von Erkrankungen im Erwachsenenalter nach. In dieser Arbeit konnte die metabolische Prägung von Stammzellen durch Methylglyoxal (MGO) und Glyoxal (GO) als Ursache für die steigende Adipositasprävalenz nachgewiesen werden. MGO und GO sind physiologische Metabolite des Glukose- und Fettstoffwechsels und reagieren mit basischen Biomolekülen wie Lysin und Arginin zu Advanced Glycation Endproducts (AGEs) mit Konsequenzen für Seneszenz und Zellplastizität. Die Exposition der MSC-Zelllinie C3H10T1/2 mit MGO und GO führte zur Formation von AGEs und Induktion von p21. Des Weiteren konnte eine vermehrte Differenzierung zu Adipozyten nachgewiesen werden. Dieser Mechanismus kann über die veränderte Proteinmenge von PPARγ2, dem adipozytenspezifischen Hauptregulators der Adipogenese und Lipohomöostase, vermittelt werden.
description: Barker's Developmental Origin of Health and Disease (DOHaD) hypothesis demonstrated a link between adverse influences in embryonic development and the occurrence of diseases in adulthood. In this work, the metabolic imprinting of stem cells by methylglyoxal (MGO) and glyoxal (GO) was shown to be the cause of increasing obesity prevalence. MGO and GO are physiological metabolites of glucose and lipid metabolism and react with basic biomolecules such as lysine and arginine to form advanced glycation end products (AGEs) with consequences for senescence and cell plasticity. Exposure of the MSC cell line C3H10T1/2 to MGO and GO led to the formation of AGEs and induction of p21. Furthermore, increased differentiation into adipocytes could be detected. This mechanism may be mediated by the altered protein levels of PPARγ2, the adipocyte-specific master regulator of adipogenesis and lipohomeostasis.
Dual-wavelength of 1.3um and 1.55um AlGaSb/GaSb asymmetric quantum-well laser
Creators: name: Sim, Steven K. H.
name: Mutamba, Kabula
name: Herbert Li, E.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: A dual-wavelength laser diode of 1.3um and 1.55um operating wavelength is under analysis. The structure of this laser diode involves an asymmetric dual quantum-well of AlGaSb/GaSb . The longer-wavelength quantum-well is doped with a 50A Si at the barrier near the well. This will enable a localized intermixing during an anneal under a SiNx cap, while the shorter-wavelength quantum-well is not affected. The area where GaSb is exposed has no intermixing in both the quantum-wells. It is possible to construct a dual wavelength quantum-well laser where the surface is pattered to have a section covered with SiNx and the other has GaSb exposed. The GaSb -exposed section undertakes surface lasing at 1.55u.m, while the SiNx capped section removes the longer wavelength quantum well by intermixing and lasing at 1.3um.
In-situ etching technique, inside MOCVD reactor, for fabrication of III-V optoelectronic devices
Creators: name: Bertone, D.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: The challenge of the mass production of optoelectronic devices is to develop new technological process in order to reduce the number of steps and to improve the process yield. In particular, for the realisation of integrated photonic devices, the etching and the following (eventually selective) regrowth represent the most crucial technological steps. This paper overviews the recent technological advances in obtaining vertical and oblique sidewalls in both InP and GaInAsP/InP MQW laser structures partially masked with SiN into the MOCVD deposition chamber, by using chlorinated compounds. The optimized experimental conditions were applied to etch mesa stripes in a SCH-MQW laser structure, followed by lateral InP.Fe regrowth in the same step. Threshold current as low as 6 mA and differential quantum efficiency higher than 25% for SI-BH MQW laser have been achieved.
Space-time percolation and detection by mobile nodes
Creators: name: Stauffer, Alexandre
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Consider the model where nodes are initially distributed as a Poisson point process with intensity $λ$ over $\mathbb{R}^d$ and are moving in continuous time according to independent Brownian motions. We assume that nodes are capable of detecting all points within distance $r$ of their location and study the problem of determining the first time at which a target particle, which is initially placed at the origin of $\mathbb{R}^d$, is detected by at least one node. We consider the case where the target particle can move according to any continuous function and can adapt its motion based on the location of the nodes. We show that there exists a sufficiently large value of $λ$ so that the target will eventually be detected almost surely. This means that the target cannot evade detection even if it has full information about the past, present and future locations of the nodes. Also, this establishes a phase transition for $λ$ since, for small enough $λ$, with positive probability the target can avoid detection forever. A key ingredient of our proof is to use fractal percolation and multi-scale analysis to show that cells with a small density of nodes do not percolate in space and time.
description: Published at http://dx.doi.org/10.1214/14-AAP1052 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Development of millimeter-wave package for consumer market
Creators: name: Makihara, Chihiro
name: Yoshida, Katsuyuki
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Semiconductor technology has made significant advancements in the past few decades. High frequency devices, including GaAs, HEMT, and HBT are driven into the market. At the same time, the demand of packages for high frequency devices are accelerating to the market. The movement for package-less by passivation layer is occuring, however because the device yield is poor, high frequency packages are highly demanded. These packages are currently being required for such applications in car radar and wireless LAN programs. This paper will describe the design technologies and material options of micro- to millimeter-wave MMIC package for the consumer market to meet the demands for a small, low cost, and high performance package.
Large volume production of large size GaAs substrates and epitaxial wafers for microwave devices
Creators: name: Otoki, Y.
name: Kamogawa, H.
name: Ohnishi, M.
name: Inada, T.
name: Kashiwa, M.
name: Sakaguchi, H.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Recent mass production techniques for LEC substrates and MOVPE wafers for microwave devices are described. Huge GaAs semi-insulating ingots (150mm diam., 310mm long) was obtained by Multi-hot-zone very large size pullar. Three step boule annealing and fully-automated process enabled mass production of the large size substrates. Epitaxiial wafers with abrupt hetero interface, excellent uniformity and reproducibility are producing largely by face down horizontal flow type MOVPE system, which can be applied to 150mm diam..
Additional file 3: of The R2R3-MYB transcription factor PaMYB10 is involved in anthocyanin biosynthesis in apricots and determines red blushed skin
Creators: name: Xi, Wanpeng
name: Feng, Jing
name: Liu, Yu
name: Zhang, Shikui
name: Zhao, Guohua
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: Figure S1. Phylogenetic tree of gene sequences for 148 MYB genes from the apricot transcriptome and MYB transcription factors from other species. (PDF 823 kb)
Additional file 4: of The R2R3-MYB transcription factor PaMYB10 is involved in anthocyanin biosynthesis in apricots and determines red blushed skin
Creators: name: Xi, Wanpeng
name: Feng, Jing
name: Liu, Yu
name: Zhang, Shikui
name: Zhao, Guohua
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Table S3. Flavonoid-related MYB transcription factors using in phylogenetic analysis. (PDF 227 kb)
title: Wilson, Woodrow
title: Wilson, Woodrow
Creators: name: Benbow, Mark E.
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Wilson, Woodrow
subject: Wilson, Woodrow, 1856-1924

description: Thomas Woodrow Wilson was the twenty-eighth president of the United States (1913-1921). Wilson unsuccessfully attempted to bring the belligerents to the negotiating table, but in 1917 reluctantly concluded that the U.S. should join the war as an “Associated Power.” His attempts to create a lasting peace created the League of Nations, but failed to prevent another world war.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Elga Mark-Kuriku välipäevik nr 14
Creators: name: Mark-Kurik, Elga
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1958
Subjects: Estonia
Latvia
Lovat River
Devonian
outcrops

description: Field notebook with descriptions of Devonian outcrops in Estonia, Latvia and Lovat River area.
Wave propagation models for the planning of mobile communication networks
Creators: name: Landstorfer, F. M.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: The paper gives a survey on a variety of methods for modelling wave propagation in different mobile communication scenarios. The requirements for predicting fieldstrength level and other relevant para-meters are discussed for various mobile communication networks including outdoor and indoor scenarios. Apart from well known and widely used propagation models new approaches with minimised computation time are presented
Linear Ramps of Interaction in the Fermionic Hubbard Model
Creators: name: Sandri, Matteo
name: Schiro', Marco
name: Fabrizio, Michele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the out of equilibrium dynamics of the Fermionic Hubbard Model induced by a linear ramp of the repulsive interaction $U$ from the metallic state through the Mott transition. To this extent we use a time dependent Gutzwiller variational method and complement this analysis with the inclusion of quantum fluctuations at the leading order, in the framework of a $Z_2$ slave spin theory. We discuss the dynamics during the ramp and the issue of adiabaticity through the scaling of the excitation energy with the ramp duration $τ$. In addition, we study the dynamics for times scales longer than the ramp time, when the system is again isolated and the total energy conserved. We establish the existence of a dynamical phase transition analogous to the one present in the sudden quench case and discuss its properties as a function of final interaction and ramp duration. Finally we discuss the role of quantum fluctuations on the mean field dynamics for both long ramps, where spin wave theory is sufficient, and for very short ramps, where a self consistent treatment of quantum fluctuations is required in order to obtain relaxation.
description: v2: 19 pages, 14 figures, published version
The environment-migration nexus : transferring knowledge from local to global scale
Creators: name: Wiederkehr, Charlotte
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 310

description: Die Dynamik zwischen Umweltwandel und menschlicher Migration ist zu einem hochpolitisierten und kontroversen Thema geworden. Vereinfachte und deterministische Annahmen, wonach der Klimawandel Massenmigration verursacht und Einwanderung Ressourcenknappheit und Konflikte fördert, haben Narrative von Migration als Sicherheitsrisiko erzeugt. Forschung in diesem Feld zeigt jedoch, dass die jeweiligen Zusammenhänge komplex und kontextspezifisch sind. Diese Dissertation integriert umfangreiche Fallstudiendaten und trägt somit zu einem generischen Verständnis und überregionalen Bild des Umwelt-Migrations-Nexus bei. Der Fokus liegt auf den Mechanismen, durch die Umweltwandel menschliche Mobilität beeinflusst, der relativen Bedeutung von Migration als Anpassungsstrategie, und den Kontexten, die Ressourcenkonflikte in Zielregionen fördern. Die Ergebnisse widerlegen deterministische und vereinfachte Annahmen und betonen die Schlüsselrolle von sozialen und politischen Faktoren auf multiplen Skalen.
description: The dynamics between environmental change and human migration have become a highly politicised and debated topic. Simplified and deterministic assumptions of climate change causing mass migration and of immigration promoting resource scarcity and conflict have generated alarmist narratives of migration as security threat. However, scientific evidence shows that environment-migration linkages are complex and context-specific. By integrating rich data from local case studies, this dissertation contributes to a generic understanding and trans-regional picture on the environment-migration nexus. It focuses on the mechanisms through which the environment influences human mobility, the role and relative significance of migration as an adaptation strategy, and the contexts which are conducive to resource conflicts in migrant-receiving areas. The findings refute deterministic and simplistic assumptions and underline the crucial mediating role of social and political factors at various scales.
Interplay of the volume and surface plasmons in the electron energy loss spectra of C$_{60}$
Creators: name: Verkhovtsev, Alexey V.
name: Korol, Andrei V.
name: Solov'yov, Andrey V.
name: Bolognesi, Paola
name: Ruocco, Alessandro
name: Avaldi, Lorenzo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The results of a joint experimental and theoretical investigation of the C60 collective excitations in the process of inelastic scattering of electrons are presented. The shape of the electron energy loss spectrum is observed to vary when the scattering angle increases. This variation arising due to the electron diffraction of the fullerene shell is described by a new theoretical model which treats the fullerene as a spherical shell of a finite width and accounts for the two modes of the surface plasmon and for the volume plasmon as well. It is shown that at small angles, the inelastic scattering cross section is determined mostly by the symmetric mode of the surface plasmon, while at larger angles, the contributions of the antisymmetric surface plasmon and the volume plasmon become prominent.
description: 11 pages, 3 figures
A Lower Bound for the Exponent of Convergence of Normal Subgroups of Kleinian Groups
Creators: name: Jaerisch, Johannes
Publisher: name: arXiv
Year: 2012
Subjects: subject: Complex Variables (math.CV)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 30F40 (Primary) 37F30 (Secondary)

description: We give a short new proof that for each non-elementary Kleinian group $Γ$, the exponent of convergence of an arbitrary non-trivial normal subgroup is bounded below by half of the exponent of convergence of $Γ$, and that strict inequality holds if $Γ$ is of divergence type.
Flow dynamics around downwelling submarine canyons
Creators: name: Spurgin, Jessica Michelle
Publisher: name: University of British Columbia
Year: 2014

description: Flow dynamics around a downwelling submarine canyon were analyzed with the Massachusetts Institute of Technology general circulation model. Blanes Canyon (Northwest Mediterranean) was used for topographic and initial forcing conditions. Fourteen scenarios were modelled with varying forcing conditions. Rossby number and Burger number were used to determine the significance of Coriolis acceleration and stratification (respectively) and their impacts on flow dynamics. A new non-dimensional parameter (χ) was introduced to determine the significance of vertical variations in stratification. Downwelling (downwards advection of density) occurs under all forcing conditions and is enhanced within the canyon. High Burger numbers lead to negative vorticity and a trapped anticyclonic eddy within the canyon, as well as an increased density anomaly. Low Burger numbers lead to positive vorticity, cyclonic circulation and weaker density anomalies. Vertical variations in stratification affect zonal jet placement. Under the same forcing conditions, the zonal jet is pushed offshore in more uniformly stratified domains. Offshore jet location generates upwards density advection away from the canyon, while onshore jets generate downwards density advection everywhere within the model domain. Increasing Rossby values across the canyon axis, as well as decreasing Burger values, increase negative vertical flux at shelf break depth (150 m). Increasing Rossby numbers lead to stronger downwards advection of a passive tracer (nitrate). Comparisons were made to previous studies to explain how variations in initial forcing conditions impact regional flow dynamics.
Student Placement System
Creators: name: Samruddhi Patil, Sanika Desai, Tanuja Patil, Ms.Aarati Lokhande
Publisher: name: Zenodo
Year: 2025

description: The evolution of recruitment and student placement has been significantly shaped by advancements in technology. The introduction of digital platforms, particularly mobile applications, has vastly improved the efficiency, accessibility, and transparency of placement processes. The Student Placement System is a mobile-based Android application designed to create a centralized hub connecting students with recruiters. By integrating cloud technologies, the system aims to streamline the placement process for both students and recruiters. The system provides real-time job notifications, personalized job suggestions, and an AI-based resume screening feature to ensure students apply for positions suited to their qualifications. It also offers a profile-building feature that highlights academic achievements, skills, certifications, and projects, enhancing students' chances of securing placements. On the recruitment side, placement officers and recruiters can post job vacancies, communicate eligibility criteria, and manage student applications with ease. The systemincludes automated shortlisting based on predefined criteria, minimizing manual efforts and ensuring fairness.The admin dashboard provides real-time insights into placement statistics, application trends, and hiring success rates. Other features include in-app chat support, resume-building tools, and scheduling mock interviews to prepare students for recruitment processes. Following Google's Material Design principles, the interface is visually engaging and easy to use. The integration of cloud storage, data security measures, and machine learning algorithms makes the placement process more efficient, transparent, and merit-based. The Student Placement System bridges the gap between students and recruiters, making job placements more accessible and effective.
Quaderni di Linguistica e Studi Orientali / Working Papers in Linguistics and Oriental Studies, Vol. 7, 2021. Full Issue
Creators: name: Manzini, Maria Rita
name: Savoia, Leonardo Maria
Publisher: name: Quaderni di Linguistica e Studi Orientali
Year: 2021

description: Abstract
description: Quaderni di Linguistica e Studi Orientali, Vol. 7 (2021)
Elga Mark-Kuriku välipäevik nr 16
Creators: name: Mark-Kurik, Elga
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1959
Subjects: Pskov and Leningrad Oblast
Devonian
outcrops

description: Field notebook with descriptions of Devonian outcrops in Pskov and Leningrad Oblast.
title: Church of England
title: Church of England
Creators: name: Bell, Stuart
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Anglikanische Kirche
subject: Weltkrieg [1914-1918]
subject: Church of England
subject: World War, 1914-1918

description: In a conflict characterized as a Holy War between “right” and “might”, the support of the Church of England for Britain’s cause was unwavering. Those who had died in the cause of good (and God) were martyrs. However, such support did not prevent Church leaders from opposing reprisals against civilians.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
title: Film/Cinema (Denmark)
title: Film/Cinema (Denmark)
Creators: name: Bendtsen, Bjarne Søndergaard
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Film
subject: Weltkrieg [1914-1918]
subject: World War, 1914-1918--Motion pictures and the war

description: In the years leading up to the First World War, Danish film gained a prominent position among the world’s film producing countries, with ''Nordisk Films Kompagni'' the leading company. Danish productions included several war films and films dealing with war-related topics, which will be discussed in this article. Most of these films, especially after the war broke out, treated the topic from a critical, anti-war stance, as in ''Pax æterna'' (1917). This corresponds well with the country’s neutrality in the war, although other approaches also can be found, for instance in the heroic ''Pro Patria'' (1916).
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
WCDMA - The third generation radio access
Creators: name: Gudmundson, Mikael
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: Work on WCDMA as a concept for 3rd generation mobile communication (IMT-2000) started almost a decade ago in research projects sponsored by the European Community. The work continued with standardization activities of WCDMA in a number of standardization bodies, i.e., ETSI, ARIB, TTA and in T1P1. This year the standardization work has been transferred into one joint standardization project, 3GPP (3rd Generation Partnership Project) with members from all these standardization bodies. During the last year manufacturers and operators have also together succeeded in harmonizing all proposed cdma-based 3rd generation concepts into one standard with three different modes. The Direct-Sequence mode is based on WCDMA specified by 3GPP (UTRA/FDD), the Multi-Carrier mode is based on cdma2000 Multi-Carrier specified by 3GPP2, and the TDD mode is based on the TDD mode specified by 3GPP (UTRA TDD). In the paper we give a brief description of the WCDMA radio interface.
Classifying complements for Hopf algebras and Lie algebras
Creators: name: Agore, A. L.
name: Militaru, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Let $A \subseteq E$ be a given extension of Hopf (respectively Lie) algebras. We answer the \emph{classifying complements problem} (CCP) which consists of describing and classifying all complements of $A$ in $E$. If $H$ is a given complement then all the other complements are obtained from $H$ by a certain type of deformation. We establish a bijective correspondence between the isomorphism classes of all complements of $A$ in $E$ and a cohomological type object ${\mathcal H}{\mathcal A}^{2} (H, A \, | \, (\triangleright, \triangleleft) )$, where $(\triangleright, \triangleleft)$ is the matched pair associated to $H$. The factorization index $[E: A]^f$ is introduced as a numerical measure of the (CCP). For two $n$-th roots of unity we construct a $4n^2$-dimensional Hopf algebra whose factorization index over the group algebra is arbitrary large.
description: 18 pages, to appear in Journal of Algebra
Effects of pre-calving body condition and postpartum concentrate feed proportions of the ration on performance, mobilization of adipose tissue depots, ruminal pH parameters, microbial efficiency and animal health during the transition period in dairy cows [Kumulative Dissertation]
Creators: name: Bünemann, Katharina
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 636

description: In der Frühlaktation stehen Kühe vor metabolischen Herausforderungen. Der Energiebedarf übersteigt die Energieaufnahme und resultiert in einer negativen Energiebilanz. Um Veränderungen zu untersuchen, wurden Kühe mit präpartal unterschiedlichen Körperkonditionen und variierender Kraftfutteranteile verglichen. Fettdepotsveränderungen wurden mittels Ultraschallmessungen gemessen, was eine ausgeprägtere Mobilisierung einzelner Fettdepots bei höher konditionierten Tieren zeigte. Einflüsse variierender Kraftfutteranteile und mikrobieller Effizienzen auf Pansen-pH-Parameter, Nährstoffflüsse und Verdaulichkeiten wurden untersucht. Die Kühe wurden zusätzlich nach ihrer individuellen mikrobiellen Effizienz gruppiert. Der Konzentratanteil verursachte hier keine Unterschiede. Kühe mit höherer mikrobieller Effizienz zeigten höhere Nährstoffflüsse, aber geringere Verdaulichkeiten. Die Tiergesundheit wurde mittels hämatologischer Merkmale als Indikatoren für Wechselwirkungen zwischen Ernährung und Immunsystem betrachtet. Die vorliegenden Bedingungen überforderten die physiologische Anpassungsfähigkeit nicht.
description: During early lactation cows face metabolic challenges. They experience a negative energy balance as energy intake increases more slowly than energy demands rises. To examine the changes and adaptions cows with different pre-calving body condition and postpartum concentrate feed proportions of the ration were compared. Changes of fat depots were measured via ultrasonic measurements, which revealed a more pronounced mobilization of single adipose tissues in higher conditioned animals. Influences of different concentrate feed proportions and of microbial efficiencies on ruminal pH parameters, nutrient flows and digestibilities were were investigated. Cows were additionally grouped according to their individual microbial efficiency. The concentrate treatment effect did not cause differences in the mentioned parameters. More microbial efficiency cows exhibited higher nutrient flows but lower digestibilities. Animal health was considered with regard to hematological traits as indicators for possible interactions between nutritional status and immune system. The present experimental conditions did not overstress physiological adaptability.
Formale Totalsysnthese von (+)-Neosorangicin A
Creators: name: Munt, Maxim
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: Pharmazeutische Chemie
subject: Totalsysnthese
subject: 540

description: In this thesis, the formal total synthesis of (+)-neosorangicin A is described. (+)-neosorangicin A is a macrolactone showing a promising inhibition against cell division of Gram-negative and Gram-positive bacteria in first biological in vitro tests. The dissertation begins with a general introduction of antibiotics and in particular the structure, mode of action and biological data of sorangicins. Subsequently, the state of research is described based on three different research groups. In the main part, our findings are explained in relation with the synthesis. (+)-neosorangicin A was retrosynthetically disconnected into three key fragments for the synthesis. Namely, into a dihydropyran fragment, a tetrahydropyran fragment and a bicyclooctane fragment. The synthetic routes for these three key fragments and the final couplings of these are described. The focus of the work is on the synthesis of the tetrahydropyran fragment, parts of the dihydropyran fragment and the subsequent couplings of these fragments. The main part concludes with the findings on the so-called "end game" of the synthesis and the "dead end" routes. Afterwards, a short conclusion is drawn and some thoughts and considerations for the further research are discussed. This is followed by the experimental part with the corresponding experimental procedures and the analytical data.
description: In der vorliegenden Arbeit wird die Formale Totalsynthese von (+)-Neosorangicin A beschrieben. (+)-Neosorangicin A ist ein Makrolacton und zeigt in ersten biologischen in vitro Tests eine vielversprechende Hemmung der Zellteilung von Gram-negativen und Gram-positiven Bakterien. Die Dissertation fängt mit einer allgemeinen Einführung über Antibiotika und insbesondere dem Aufbau, der Funktionsweise und den biologischen Daten der Sorangicine an. Im Anschluss wird der Stand der Forschung anhand von drei verschiedenen Arbeitskreisen, welche an Sorangicinen arbeiten oder arbeiteten, beschrieben. Im Hauptteil werden unsere Erkenntnisse im Bezug der Synthese erläutert. (+)-Neosorangicin A wurde für die Synthese retrosynthetisch in drei Schlüsselfragmente zerlegt. Namentlich in ein Dihydropyran-Fragment, ein Tetrahydropyran-Fragment und ein Bicyclooctan-Fragment. Es werden die Syntheserouten für diese drei Schlüsselfragmente und die finalen Kupplungen dieser beschrieben. Dabei liegt der Schwerpunkt der Arbeit auf der Synthese des Tetrahydropyran-Fragments, Teile des Dihydropyran-Fragments und die anschließenden Kupplungen dieser. Der Hauptteil endet mit den Erkenntnissen zum sogenannten „End Game“ der Synthese und den „Dead End“ Routen. Anschließend wird ein kurzes Fazit gezogen und einigen Gedanken und Überlegungen für die weitere Vorgehensweise diskutiert. Es folgt der experimentelle Teil mit den Versuchsvorschriften und den analytischen Daten.
The oncofetal RNA-binding protein IGF2BP1 is a miRNA- and m6A-dependent enhancer of gene expression in cancer [Kumulative Dissertation]
Creators: name: Müller, Simon
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 572

description: Das onkofötale IGF2 mRNA-bindende Protein 1 (IGF2BP1) ist ein Modulator der posttranskriptionellen Genregulation, der das Schicksal assoziierter mRNAs bestimmt und dadurch zelluläre Eigenschaften während der Karzinogenese beeinflusst. Diese Doktorarbeit untersuchte die molekularen Determinanten und Mechanismen. IGF2BP1 besitzt ein konserviertes onkogenes Potential und fördert einen aggressiven Tumorzellphänotypen. IGF2BP1 fördert die SRF-Expression auf konservierte und N6-Methyladenosin-abhängige Weise, indem es den miRNA-gesteuerten Abbau beeinträchtigt. IGF2BP1 verstärkt die transkriptionelle Leistung von SRF, indem es die Expression von SRFgesteuerten Transkripten erhöht, was zu verbessertem Wachstum und Invasion von Tumorzellen führt. Schließlich verstärkt IGF2BP1 den E2F-gesteuerten Signalweg, der den G1/S-Übergang des Zellzyklus fördert. Der Inhibitor BTYNB stört diese Funktion in präklinischen Modellen, indem es die RNA-Bindungskapazität von IGF2BP1 beeinträchtigt.
description: The oncofetal IGF2 mRNA-binding protein 1 (IGF2BP1) is a modulator of post-transcriptional gene regulation orchestrating the fate of associated mRNAs and thereby affecting various cellular properties in carcinogenesis. This doctoral dissertation examined the molecular determinants and underlying mechanisms. IGF2BP1 possesses a conserved oncogenic potential and promotes an aggressive tumor cell phenotype. IGF2BP1 promotes SRF expression in a conserved and N6-methyladenosine-dependent manner by impairing the miRNA-directed decay. IGF2BP1 enhances SRF’s transcriptional output by fostering SRF-driven transcripts at the posttranscriptional level resulting in elevated tumor cell growth and invasion. Finally, IGF2BP1 is a post-transcriptional enhancer of the E2F-driven hallmark pathway in cancer cells, promoting G1/S cell cycle transition. The small molecule BTYNB disrupts this function in preclinical models by impairing IGF2BP1’s RNA-binding capacity.
Elga Mark-Kuriku välipäevik nr 19
Creators: name: Mark-Kurik, Elga
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1961
Subjects: Pskov and Leningrad Oblast
Devonian
outcrops

description: Field notebook with descriptions of Devonian outcrops in Pskov and Leningrad Oblast.
Additional file 4: of Helicobacter pylori CagA promotes epithelial mesenchymal transition in gastric carcinogenesis via triggering oncogenic YAP pathway
Creators: name: Li, Nianshuang
name: Feng, Yan
name: Hu, Yi
name: He, Cong
name: Xie, Chuan
name: Ouyang, Yaobin
name: Artim, Stephen C.
name: Huang, Deqiang
name: Zhu, Yin
name: Luo, Zhijun
name: Ge, Zhongming
name: Lu, Nonghua
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Table S1. Correlation of YAP expression and clinic pathological status of the patient with GC. (DOCX 14 kb)
CMOS RF integrated circuits: past, present and future (invited)
Creators: name: Lee, Thomas H.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1999
Subjects: ING-INF/01 Elettronica

description: CMOS RF ICs continue their transition from academic curiosities to practical devices. Recent milestones at the device- and building block-level include: Noise figures for single-ended LNAs of ~ldB in the low-GHz range; fully integrated oscillators with phase noise compliant with GSM specifications at under 10mW power con-sumption; 5GHz injection-locked frequency dividers with sub-mW power consumption and large (-30%) tun-ing range; MOSFET ring mixers with over 10dBm IIP3 and "zero" power consumption; shielded spiral and heli-cal inductors with improved Q; accumulation-mode MOS varactors with Q-frequency products in excess of 100-200GHz and tuning ratios approaching 2:1; fixed lateral flux capacitors with still higher Q-f products; coplanar transmission lines with <0.3dB/mm attenuation at 50GHz; microwave-compatible ESD structures; and constant-gm biasing for process independence. These advances have combined to enable a single-chip GPS receiver in 0.5um to exhibit 2.8dB overall NF, 57dB SFDR at 115mW, and a 5GHz HIPERLAN receiver to exhibit 5dB NF at <45mW using a 0.25um technology. Scaling forces that are already firmly in place will con-tinue to drive still greater improvements in performance.