cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modeling of the Vela complex including the Vela supernova remnant, the binary system gamma2 Velorum, and the Gum nebula
Creators: name: Sushch, Iurii
name: Hnatyk, Bohdan
name: Neronov, Andrii
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the geometry and dynamics of the Vela complex including the Vela supernova remnant (SNR), the binary system gamma2 Velorum and the Gum nebula. We show that the Vela SNR belongs to a subclass of non-Sedov adiabatic remnants in a cloudy interstellar medium (ISM), the dynamics of which is determined by the heating and evaporation of ISM clouds. We explain observable characteristics of the Vela SNR with a SN explosion with energy 1.4 x 10^50 ergs near the step-like boundary of the ISM with low intercloud densities (~ 10^{-3} cm^{-3}) and with a volume-averaged density of clouds evaporated by shock in the north-east (NE) part about four times higher than the one in the south-west (SW) part. The observed asymmetry between the NE and SW parts of the Vela SNR could be explained by the presence of a stellar wind bubble (SWB) blown by the nearest-to-the Earth Wolf-Rayet (WR) star in the gamma2 Velorum system. We show that the size and kinematics of gamma2 Velorum SWB agree with predictions of numerical calculations for the evolution of the SWB of M_ini = 35M* star. The low initial mass of the WR star in gamma2 Velorum implies that the luminosity of the nuclear line of 26Al, produced by gamma2 Velorum, is below the sensitivity of existing gamma-ray telescopes.
description: 8 pages, 2 figures, accepted for publication in A&A
Roles of serine in neurodegenerative diseases
Creators: name: Li, Jia-Meng
name: Zhang, Shuang-Qing
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2023
Subjects: serine
L-serine
D-serine
neurodegenerative diseases
N-methyl-D-aspartate glutamate receptor

description: EXCLI Journal; 22:Doc1278; ISSN 1611-2156
Thermodynamic Properties of the One-Dimensional Extended Quantum Compass Model in the Presence of a Transverse Field
Creators: name: Jafari, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The presence of a quantum critical point can significantly affect the thermodynamic properties of a material at finite temperatures. This is reflected, e.g., in the entropy landscape S(T; c) in the vicinity of a quantum critical point, yielding particularly strong variations for varying the tuning parameter c such as magnetic field. In this work we have studied the thermodynamic properties of the quantum compass model in the presence of a transverse field. The specific heat, entropy and cooling rate under an adiabatic demagnetization process have been calculated. During an adiabatic (de)magnetization process temperature drops in the vicinity of a field-induced zero-temperature quantum phase transitions. However close to field-induced quantum phase transitions we observe a large magnetocaloric effect.
A Novel Large Moment Antiferromagnetic Order in K0.8Fe1.6Se2 Superconductor
Creators: name: Bao, Wei
name: Huang, Q.
name: Chen, G. F.
name: Green, M. A.
name: Wang, D. M.
name: He, J. B.
name: Wang, X. Q.
name: Qiu, Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The discovery of cuprate high Tc superconductors has inspired searching for unconventional su- perconductors in magnetic materials. A successful recipe has been to suppress long-range order in a magnetic parent compound by doping or high pressure to drive the material towards a quantum critical point, which is replicated in recent discovery of iron-based high TC superconductors. The long-range magnetic order coexisting with superconductivity has either a small magnetic moment or low ordering temperature in all previously established examples. Here we report an exception to this rule in the recently discovered potassium iron selenide. The superconducting composition is identified as the iron vacancy ordered K0.8Fe1.6Se2 with Tc above 30 K. A novel large moment 3.31 μB/Fe antiferromagnetic order which conforms to the tetragonal crystal symmetry has the unprecedentedly high an ordering temperature TN = 559 K for a bulk superconductor. Staggeredly polarized electronic density of states thus is suspected, which would stimulate further investigation into superconductivity in a strong spin-exchange field under new circumstance.
description: 5 figures, 5 pages, and 2 tables in pdf which arXiv.com cannot take
Improving the Control Strategy in two-way deterministic cryptographic protocols
Creators: name: Eusebi, Anita
name: Mancini, Stefano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a new control strategy on a two-way deterministic cryptographic scheme, which relies on a suitable unitary transformation rather than quantum measurement. The study is developed for d-ary alphabets and the particular choice of the transformation works when d is an odd prime power. It leads to an improvement of the protocol security, which we prove to increase with the alphabet order d.
description: 8 pages, 3 figures
Probing the electrostatics of integer quantum hall edges with momentum-resolved tunnel spectroscopy
Creators: name: Huber, Michael
name: Grayson, M.
name: Schuh, Dieter
name: Bichler, Max
name: Biberacher, W.
name: Wegscheider, Werner
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: Quantum Hall effect; Edge; Tunneling; Momentum-resolved
subject: 530 Physik
subject: 73.43.Jn; 71.70.Di

description: We present measurements of momentum-resolved magneto-tunneling from a perpendicular two-dimensional (2D) contact into integer quantum Hall (QH) edges at a sharp-edge potential created by cleaved-edge overgrowth. Resonances in the tunnel conductance correspond to coincidences of electronic states of the QH edge and the 2D contact in energy–momentum space. With this dispersion relation reflecting the potential distribution at the edge we can directly measure the band bending at our cleaved edge under the influence of an external voltage bias. At finite bias we observe significant deviations from the flat-band condition in agreement with self-consistent calculations of the edge potential.
Differences in net primary production allocation and nitrogen use efficiency between Moso bamboo and Japanese cedar forests along a slope
Creators: name: Shimono, Kohei
name: Katayama, Ayumi
name: Kume, Tomonori
name: Enoki, Tsutomu
name: Chiwa, Masaaki
name: Hishi, Takuo
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: The responses of forest production and nitrogen (N) utilization to belowground resource availability may be stronger in Moso bamboo forests than in woody forests because the former have higher N and water demands than the latter. The aim of this study was to clarify the different effects of mountain slope-induced belowground resource limitation on forest production between a Moso bamboo forest and a Japanese cedar forest. We compared the changes in biomass, net primary production, net primary production allocation, N utilization, N content per organ, and N use efficiency in response to soil resource availability at five different slope positions in each forest type. In the bamboo forest, the aboveground net primary production decreased upslope and the belowground net primary production allocation increased with decreasing upslope soil water availability. In contrast, leaf N content of the bamboo forest increased upslope, and N use efficiency decreased upslope with an increasing upslope soil N mineralization rate. Although a greater N use efficiency has often been reported at higher slope positions due to lower N availability, this phenomenon was observed at lower slope position in the bamboo forest. The soil N supply might exceed the soil N demand at higher slope positions, resulting in lower N use efficiency. The responses observed in the bamboo forest were absent in the Japanese cedar forest. The higher demand for belowground resources and environmental plasticity explained the higher productivity of the bamboo forest.
Political participation on the prairies : historical institutionalism and the economic determinants of voter turnout in Alberta and Saskatchewan
Creators: name: James, Hammond
Publisher: name: University of British Columbia
Year: 2018

description: Turnout at Canadian elections has been declining considerably since the 1980s yet much of the literature on turnout is dominated by behaviouralism which offers value in predicting the voting behaviour of individuals but struggles to account for long-term trends at the aggregate level. This is particularly pressing in Canada where turnout differs substantially between provinces, nowhere more so than between Alberta and Saskatchewan whose political differences, despite their similarities elsewhere, illustrates the regionalized nature of politics in Canada. This paper will seek to apply the two most prevalent theoretical understandings of regionalism, formal institutional approaches and political culture approaches, to demonstrate that neither offers entirely adequate explanations when tested against such challenging cases. Instead it will be argued that to resolve the undetermined causal logic of these approaches to understand turnout in Alberta and Saskatchewan, the historical agricultural development of the provinces must be examined to understand the formation of cleavages along class and ownership of land that continue to determine political behaviour. Such a re-conceptualization will be presented through the lens of historical institutionalism, which argues that historical economic processes create informal institutions, as norms and rules of behaviour, that are relatively static and durable in the face of subsequent change but continue to frame perceptions and guide decision making, thereby determining the political behaviour of individuals. By considering the historical sources of political differences in Canada and how these attitudes emerged through relationships of power and economic exploitation with other parts of the country, it is hoped that more productive steps can be taken to begin rebuilding trust in state institutions and creating the conditions for the evolution of new norms which may foster greater participation.
Superior anti-neoplastic activities of triacontanol-PEG conjugate: synthesis, characterization and biological evaluations
Creators: name: Zhou, Yimeng
name: Li, Ning
name: Qiu, Zhixia
name: Lu, Xiaoyu
name: Fang, Min
name: Chen, Xijing
name: Ren, Lili
name: Wang, Guangji
name: Ouyang, Pingkai
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer

description: Triacontanol (TA, C30H62O), abundantly present in plant cuticle waxes and bee waxes, has been found to display promising anti-neoplastic potentials. As a long chain fatty alcohol, TA possesses limited aqueous solubility, which hinders its medicinal application. To overcome its solubility barrier, a polymer prodrug was synthesized through attaching TA to poly ethylene glycol (PEG), using succinic acid as a linker with bifunctional amide and ester bonds. Anti-neoplastic effects of PEG-TA were assessed in LoVo and MCF7 cells, anti-proliferative and apoptosis-inducing activities were subsequently confirmed in mouse xenograft model. Encouragingly, PEG-TA possessed selective anti-cancer ability. It did not exhibit significant cytotoxicity on normal cells. Mechanistic examination revealed inhibition of NF-κB nuclear translocation, suppression on matrix degradation enzyme and down-regulation of angiogenic signaling might contribute to its anti-malignant effects. Pharmacokinetics clearly indicated PEGylated TA (named as mPEG2K-SA-TA) substantially enhanced TA delivery with increased plasma exposure (19,791 vs. 336.25 ng·mL−1·h−1, p p p −1). Conclusively, PEG-TA conjugate displayed superior anti-neoplastic activities and low toxicity, as well as facilitated the delivery of other hydrophobic agents, which appeared to be an innovative strategy for cancer therapy.
Bestandesaufnahme zum Thema Hochsensibilität im Unterricht von Ausbildungsinstitutionen im Bereich Human Resources, Therapie und Betriebliches Gesundheitsmanagement
Creators: name: Ronchi, Tina
Publisher: name: Hochschule für Angewandte Psychologie FHNW
Year: 2023
Subjects: subject: Hochsensibilität
subject: Bestandaufnahme Bildungsinstitute Schweiz
subject: HR-Fachkräfte
subject: Therapeutinnen und Therapeuten
subject: BGM-Fachkräfte
subject: Umgang mit hochsensiblen Menschen
subject: 150 - Psychologie

description: Hochsensibilität ist ein Persönlichkeitsmerkmal; bis zu 30% der Menschen sind hochsensibel. Fragestellung: Die Fragestellung 1 lautet: «In welchem Umfang werden HR-Fachkräfte, Therapeutinnen und Therapeuten sowie BGM-Fachpersonen in ihrer Ausbildung auf das Thema hochsensible Personen unterrichtet und geschult?». Die Fragestellung 2 lautet: «Welche Kompetenzen und Wissensthemen müssen in welchem Umfang gelehrt und trainiert werden, damit HR-Fachkräfte, Therapeutinnen und Therapeuten sowie BGM Fachkräfte «richtig» mit hochsensiblen Personen umgehen können?». Methode: Fragestellung 1 wurde mit einem Fragebogen an die Ausbildungsinstitute der genannten Berufsgruppen gesandt. Die Stichprobe der Institute ist n = 16. Zusätzlich wurden qualitative Interviews durchgeführt. Für die Beantwortung der Fragestellung 2 wurden eine Literaturrecherche sowie ein Experteninterview mit zwei Personen durchgeführt. Ergebnisse: Die Fragestellung 1 kann damit beantwortet werden, dass 12 Institute Hochsensibilität in der Ausbildung unterrichten. Davon konnte ein Institut interviewt werden: Es werden neurobiologische Inhalte und Ressourcen vermittelt. An einem anderen Institut wird das Thema nicht direkt unterrichtet, jedoch für Verbindung von Theorie und Praxis verwendet. Die Beantwortung der Fragestellung 2 schlägt für alle Berufsgruppen vor, dass das Thema in der Ausbildung unterrichtet wird. Bei HR-Fachkräften sind Akzeptanz für das Thema, Erkennen von Weiterbildungswünschen sowie die Wissensthemen Kommunikation und Persönlichkeit innerhalb eines Teams von Bedeutung. Bei Therapeutinnen und Therapeuten ist es wichtig, dass eine wertschätzende Haltung eingenommen wird und ein Methodenkoffer für die Beruhigung einer Überreizung des Nervensystems vorhanden ist. Ausbildungsthemen sind hier die Abgrenzung von Hochsensibilität gegenüber Krankheitsbildern und das Wissen über Medikation. Bei BGM-Fachpersonen wird Wissen über Raumgestaltung, Arbeitsgestaltung und ein neues Verständnis von Produktivität gefordert.
Effect of Immediate Dentin Sealing and Thermocycling on Microtensile Bond Strength when Using A Three-step Etch and Rinse Adhesive
Creators: name: Pantung, Saranpong
Publisher: name: The Dental Association of Thailand
Year: 2019
Subjects: Immediate dentin sealing
Simulated dentinal fluid flow
Thermocycling
Microtensile bond strength
Three-step etch and rinse adhesive

description: Journal of The Dental Association of Thailand, 69, 2, 162-174
Effect of Ultrasonic Treatment on The Leachable Monomer Content from A Self Cured Acrylic Hard Denture Reline Material
Creators: name: Wiwatwarapan, Chairat
Publisher: name: The Dental Association of Thailand
Year: 2019
Subjects: High pressure liquid chromatography
Leached monomer
Acrylic resin, Hard reline
Ultrasonic

description: Journal of The Dental Association of Thailand, 69, 2, 175-184
A note about invariants of algebraic curves
Creators: name: Bedratyuk, Leonid
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 13N15, 14H50, 13A50, 16W25

description: For affine algebraic plane curves we reduce a calculation of its invariants to calculation of the intersection of kernels of some derivations.
description: 8 pages, draft
Enhancing the spectral response of filled bolometer arrays for submillimeter astronomy
Creators: name: Revéret, Vincent
name: Rodriguez, Louis
name: Agnèse, Patrick
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The future missions for astrophysical studies in the submillimeter region will need detectors with very high sensitivity and large field of view. Bolometer arrays can fulfill these requirements over a very broad band. We describe a technique that enables bolometer arrays that use quarter wave cavities to have a high spectral response over most of the submillimeter band. This technique is based on the addition on the front of the array of an anti-reflecting dielectric layer. The optimum parameters (layer thickness and distance to the array) are determined by a 2D analytic code. This general principle is applied to the case of the Herschel PACS bolometers (optimized for the 60 - 210 micron band). As an example, we demonstrate experimentally that a PACS array covered by a 138 micron thick silicon layer can improve the spectral response by a factor 1.7 in the 450 micron band.
description: 26 pages, 10 Figures. Accepted for publication in Applied Optics
Novel application of pluronic lecithin organogels (PLOs) for local delivery of synergistic combination of docetaxel and cisplatin to improve therapeutic efficacy against ovarian cancer
Creators: name: Chang, Chia-En
name: Hsieh, Chien-Ming
name: Chen, Ling-Chun
name: Su, Chia-Yu
name: Liu, Der-Zen
name: Jhan, Hua-Jing
name: Ho, Hsiu-O
name: Sheu, Ming-Thau
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: The synergistic combination of docetaxel (DTX) and cisplatin (CIS) by local drug delivery with a pluronic lecithin organogel (PLO) to facilitate high drug concentrations at tumor sites and less nonspecific distribution to normal organs is thought to be beneficial in chemotherapy. In this study, using Capryol-90 (C90) with the addition of lecithin as the oil phase was developed to carry DTX, which was then incorporated into a PLO-containing CIS to formulate a dual-drug injectable PLO for local delivery. An optimal PLO composite, P13L0.15O1.5, composed of PF127:lecithin:C90 at a 13:0.15:1.5 weight ratio was obtained. The sol–gel transition temperature of P13L0.15O1.5 was found to be 33 °C. Tumor inhibition studies illustrated that DTX/CIS-loaded P13L0.15O1.5 could efficiently suppress tumor growth by both intratumoral and peritumoral injections in SKOV-3 xenograft mouse model. Pharmacokinetic studies showed that subcutaneous administration of P13L0.15O1.5 was able to sustain the release of DTX and CIS leading to their slow absorption into the systemic circulation resulting in lower area under the plasma concentration curve at 0–72 h (AUC0–72) and maximum concentration (Cmax) values but longer half-life (T1/2) and mean residence time (MRT) values. An in vivo biodistribution study showed lower DTX and CIS concentrations in organs compared to other treatment groups after IT administration of the dual drug-loaded P13L0.15O1.5. It was concluded that the local co-delivery of DTX and CIS by PLOs may be a promising and effective platform for local anticancer drug delivery with minimal systemic toxicities.
Intelligent Semantic Web Search Engines: A Brief Survey
Creators: name: Madhu, G.
name: Govardhan, Dr. A.
name: Rajinikanth, Dr. T. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The World Wide Web (WWW) allows the people to share the information (data) from the large database repositories globally. The amount of information grows billions of databases. We need to search the information will specialize tools known generically search engine. There are many of search engines available today, retrieving meaningful information is difficult. However to overcome this problem in search engines to retrieve meaningful information intelligently, semantic web technologies are playing a major role. In this paper we present survey on the search engine generations and the role of search engines in intelligent web and semantic search technologies.
A mixed-effects height-diameter model for Gmelina arborea Roxb stands in Southwest Nigeria
Creators: name: Ogana, Friday Nwabueze
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: Nonlinear mixed-effects (NLME) is an important tool for explaining inter- and intra-plot/stand variations, especially when modelling height–diameter relationships. The NLME technique has not been used to model the height–diameter relationship of Gmelina arborea trees in Nigeria. Therefore, in this study, NLME model was developed for G. arborea stands in southwest Nigeria. A total of 1263 height-diameter pairs measured from 63 sample plots of 0.04 ha size were used to develop the NLME model. The model was calibrated using random effect predicted from the measured height of one to eight sampled trees of an independent dataset. Empirical best unbiased predictor technique was used to make predictions for the random component. Model evaluation was based on different indices such as root mean square error (RMSE), adjusted coefficient of determination (Rˉ2). The results showed that the NLME model improved the accuracy of predicting heights of G. arborea trees with RMSE and Rˉ2 values of 2.378 and 0.828. Calibration response of the model involved the selection of five sample trees per plot nearest to the quadratic mean diameter. This is the ideal compromise between maintaining accuracy and reducing sampling cost.
Impacts of invasive Acacias on ion deposition in a coastal Bornean tropical heath forest
Creators: name: Ibrahim, Mohamad Hilmi
name: Metali, Faizah
name: Tennakoon, Kushan U
name: Sukri, Rahayu Sukmaria
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: The uncontrolled invasive spread of exotic Acacias is a growing concern for many tropical ecosystems, particularly due to their negative impact upon nutrient cycling. Studies investigating the effects of Acacia invasion on nutrient cycling have focused on litterfall and litter decomposition, although its impact on ion deposition in tropical ecosystems is less understood. We quantified and compared the rates of ion deposition (Ca2+, Mg2+, NH4+, NO3−) between Acacia-invaded and non-invaded tropical heath (Kerangas) forest sites in Brunei Darussalam, Southeast Asia. Ion exchange resin (IER) sampler, IER ring and IER bags were used to determine ion depositions via throughfall, in soils and in stream water respectively. Throughfall in Acacia-invaded heath forest sites recorded significantly higher NH4+ and Ca2+ depositions but lower Mg2+ than non-invaded, intact sites. For ion deposition in soil, all depths recorded significantly higher Ca2+ (except for 0 cm depth), Mg2+ and NH4+ depositions, but significantly lower NO3− depositions, in Acacia-invaded sites. Ion deposition in stream water showed significant monthly variations, with Acacia-invaded sites recording significantly higher Mg2+ depositions in June, August and September 2015 but lower NH4+ depositions in June, July and September, lower NO3− and Ca2+ depositions in June and September than non-invaded heath forest sites. Overall, these findings demonstrate that ion deposition via throughfall, in soil and in stream water were all affected by Acacia invasion, thus confirming the influence of alien invasive Acacias on nutrient cycling of tropical heath forests.
Molecular cloud distance determination from deep NIR survey extinction measurements
Creators: name: Stead, J. J.
name: Hoare, M. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using near infrared UKIDSS Galactic Plane Survey data, we make extinction measurements to individual stars along the same line of sight as molecular clouds. Using an existing 3D extinction map of the inner Galaxy, that provides line of sight specific extinction-distance relationships, we convert the measured extinction of molecular clouds to a corresponding distance. These distances are derived independently from kinematic methods, typically used to derive distances to molecular clouds, and as such they have no near/far ambiguity. The near/far distance ambiguity has been resolved for 27 clouds and distances have been derived to 20 clouds. The results are found to be in good agreement with kinematic measurements to molecular clouds where the ambiguity has already been resolved, using HI self-absorption techniques.
description: MNRAS accepted: 07/05/2010
Hole spin-relaxation in quantum wells from saturation of inter-subband absorption
Creators: name: Kainz, Josef
name: Schneider, Petra
name: Ganichev, Sergey
name: Rössler, U.
name: Wegscheider, Werner
name: Weiss, Dieter
name: Prettl, Wilhelm
name: Belkov, Vassilij
name: Golub, Leonid E.
name: Schuh, Dieter
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: Hole spin-relaxation; Saturation of absorption; Inter-subband transition
subject: 530 Physik
subject: 72.25.Dc; 72.25.Rb

description: Spin-sensitive saturation of absorption of infrared radiation has been investigated in p-type GaAs QWs. It is shown that the absorption saturation of circularly polarized radiation is mostly controlled by the spin relaxation time of the holes. The saturation behavior has been investigated for different QW widths and in dependence on the temperature with the result that the saturation intensity substantially decreases with smaller QW width. Spin relaxation times were experimentally obtained by making use of calculated (linear) absorption coefficients for inter-subband transitions. The question of selection rules for intersubband transitions between hole subbands is addressed.
The solar magnetic field
Creators: name: Solanki, Sami K.
name: Inhester, Bernd
name: Schüssler, Manfred
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The magnetic field of the Sun is the underlying cause of the many diverse phenomena combined under the heading of solar activity. Here we describe the magnetic field as it threads its way from the bottom of the convection zone, where it is built up by the solar dynamo, to the solar surface, where it manifests itself in the form of sunspots and faculae, and beyond into the outer solar atmosphere and, finally, into the heliosphere. On the way it, transports energy from the surface and the subsurface layers into the solar corona, where it heats the gas and accelerates the solar wind.
description: 83 pages, 42 figures, about 2.5 MB in size
ANALYSIS OF THE IMPACT OF CREDIT RESTRUCTURING POLICY DURING COVID-19 ON INDONESIAN COMMERCIAL BANKS' CREDIT RISK
Creators: name: TUK YULIANTO
name: TRI RATNAWATI
name: ULFI PRISTIANA
Publisher: name: Zenodo
Year: 2023
Subjects: Credit Risk Management, Compliance to Regulation, Credit Restructuring Policy, Internal Control, Credit Risk, Covid-19 Pandemic.

description: Abstract
This research is a study of credit activities at commercial banks in Indonesia. The main objective of quantitative research is to examine the influence of Credit Restructuring Policy on Credit Risk and Compliance to Regulation of commercial banks in Indonesia. This research approach is a confirmative quantitative approach, with analysis techniques using the SEM method which is processed using WarpPLS 6.0. The novelty of this research is the credit restructuring policy variable that was issued during the Covid-19 Pandemic, the role of Internal Control as moderating the influence of the Credit Risk Management Process on Credit Risk, and the measurement of credit risk which is based on respondents' perceptions, not based on financial ratios. Research data was obtained through a questionnaire regarding the perceptions of one hundred respondents of commercial bank officials regarding credit activities, internal control and credit risk. Research findings show that the Credit Restructuring Policy has a positive effect on the Credit Risk Management Process but does not have a direct effect on Credit Risk. Compliance to Regulation has no effect on the Credit Risk Management Process and Credit Risk. The Credit Risk Management Process influences Credit Risk. Meanwhile, Internal Control weakens the relationship between the Credit Risk Management Process and Credit Risk.
Carbonic anhydrase in the gills and blood of chondrichthyan fishes
Creators: name: McMillan, Olivia Jenna Lindsay
Publisher: name: University of British Columbia
Year: 2018

description: Carbon dioxide (CO₂) is continuously produced as a result of aerobic respiration and must be excreted to maintain internal acid-base balance. Most CO₂ is carried in the blood as HCO₃- and must be converted back to molecular CO₂ at the respiratory surface to diffuse out into the environment. The uncatalyzed rate of HCO₃- dehydration is too slow to excrete CO₂ at a physiologically relevant rate and therefore it must be catalyzed by the enzyme carbonic anhydrase. The distribution of carbonic anhydrase in the blood and gills of fish therefore provides important information about general patterns of gas exchange and acid-base balance. Teleost fishes have a fast CA in the red blood cell (RBC), no extracellular CA activity, an endogenous plasma CA inhibitor and a relatively low plasma buffer value so HCO₃- dehydration is largely restricted to the RBC. Pacific spiny dogfish (Squalus suckleyi), however, have a slow RBC CA, extracellular CA activity, no endogenous plasma CA inhibitor, plasma accessible CAIV at the gills and a relatively high plasma buffer value, implying that both the RBC and plasma compartments may contribute to HCO₃- dehydration. This thesis uses biochemical assays, subcellular localization and immunohistochemistry on blood and gill samples from 13 chondrichthyan species to examine whether the characteristics of the dogfish model of CO₂ excretion apply to chondrichthyan fishes in general. Overall, the results of this study were consistent with the proposed chondrichthyan model of CO₂ excretion because most chondrichthyans had lower RBC CA activity than teleosts, some extracellular CA activity, no endogenous plasma CA inhibitor, higher plasma buffer values and type IV-like CA at the gills. Pacific spiny dogfish had 3x more microsomal CA activity (183 ± 13.2 µmol CO₂ min-1 mg protein-1) in the gills than the other three species examined for this trait, indicating that dogfish may not be a representative species to compare with other vertebrate groups. Overall, the results of this thesis suggest that all chondrichthyans have the capacity to use both the plasma and RBC compartments for CO₂ excretion and these data provide important information about general patterns of gas exchange and acid-base balance in fishes.
High-field magnetoresistance of Fe/GaAs/Fe tunnel junctions
Creators: name: Zenger, Marcus
name: Moser, Jürgen
name: Wegscheider, Werner
name: Weiss, Dieter
name: Dietl, T.
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: iron, gallium arsenide, III-V semiconductors, ferromagnetic materials, magnetic semiconductors, magnetic epitaxial layers, semiconductor epitaxial layers, tunnelling magnetoresistance, Zeeman effect, metal-semiconductor-metal structures
subject: 530 Physik
subject: 75.50.Pp; 73.61.Ey; 71.70.Ej; 75.47.-m; 73.50.Fq; 73.40.Sx; 72.20.My

description: We investigate transport through 6–10 nm thin epitaxial GaAs(001) barriers sandwiched between polycrystalline iron films. Apart from a pronounced tunneling magnetoresistance effect at low magnetic fields, we observe a distinct negative magnetoresistance (MR) at low and a positive MR at higher temperatures. We show that the negative MR contribution is only observed for the ferromagnetic iron contacts but is absent if iron is replaced by copper or gold electrodes. Possible explanations of the negative MR involve suppression of spin-flip scattering or Zeeman splitting of the tunneling barrier, but neither of these explanations is fully consistent with the data.
Complications of Wisdom Tooth Removal by Non-Oral and Maxillofacial Surgeons: Rate and Related Factors
Creators: name: Wongkalasin, Khemakorn
Publisher: name: The Dental Association of Thailand
Year: 2019
Subjects: Complication
Removal
Wisdom tooth
non-oral and maxillofacial surgeon

description: Journal of The Dental Association of Thailand, 69, 2, 198-208
Tkachenko modes in rotating neutron stars: the effect of compressibility and implications for pulsar timing noise
Creators: name: Haskell, Brynmor
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Long wavelength oscillations (Tkachenko waves) of the triangular lattice of quantized vortices in superfluid neutron stars have been suggested as one of the possible explanations for the timing noise observed in many radio pulsars, in particular for the 100-1000 day variations in the spin of PSR B1828-11. Most studies to date have, however, been based on the hydrodynamics developed for superfluid Helium. In this paper we extend the formulation to a two fluid neutron and proton system, relevant for neutron star interiors and include the effect of chemical coupling, compressibility and mutual friction between the components. In particular we find that chemical coupling and compressibility can have a drastic effect on the mode structure. However, for the slower pulsars rotating at 1-10 Hz (such as PSR 1828-11), most choices of parameters in the equation of state lead to Tkachenko oscillations with frequencies in the correct range to explain the timing noise. We also investigate the case of more rapidly rotating pulsars (above 100 Hz) for which we find that there is a vast portion of parameter space in which there are no Tkachenko modes, but only modified sound waves at much higher frequencies.
A journey from the endothelium to the tumor tissue: distinct behavior between PEO-PCL micelles and polymersomes nanocarriers
Creators: name: Figarol, Agathe
name: Gibot, Laure
name: Golzio, Muriel
name: Lonetti, Barbara
name: Mingotaud, Anne-Françoise
name: Rols, Marie-Pierre
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Polymeric nanocarriers must overcome several biological barriers to reach the vicinity of solid tumors and deliver their encapsulated drug. This study assessed the in vitro and in vivo passage through the blood vessel wall to tumors of two well-characterized polymeric nanocarriers: poly(ethyleneglycol-b-ε-caprolactone) micelles and polymersomes charged with a fluorescent membrane dye (DiO: 3,3'-dioctadecyloxacarbo-cyanine perchlorate). The internalization and translocation from endothelial (human primary endothelial cells HUVEC) to cancer cells (human tumor cell line HCT-116) was studied in conventional 2D monolayers, 3D tumor spheroids, or in an endothelium model based on transwell assay. Micelles induced a faster DiO internalization compared to polymersomes but the latter crossed the endothelial monolayer more easily. Both translocation rates were enhanced by the addition of a pro-inflammatory factor or in the presence of tumor cells. These results were confirmed by early in vivo experiments. Overall, this study pointed out the room for the improvement of polymeric nanocarriers design to avoid drug losses when crossing the blood vessel walls.
Shadowing unstable orbits of the Sitnikov elliptic 3-body problem
Creators: name: Urminsky, D. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Errors in numerical simulations of gravitating systems can be magnified exponentially over short periods of time. Numerical shadowing provides a way of demonstrating that the dynamics represented by numerical simulations are representative of true dynamics. Using the Sitnikov Problem as an example, it is demonstrated that unstable orbits of the 3-body problem can be shadowed for long periods of time. In addition, it is shown that the stretching of phase space near escape and capture regions is a cause for the failure of the shadowing refinement procedure.
description: 9 pages, 13 figures, accepted in MNRAS
Tunable subpicosecond electron bunch train generation using a transverse-to-longitudinal phase space exchange technique
Creators: name: Sun, Y. -E
name: Piot, P.
name: Johnson, A.
name: Lumpkin, A. H.
name: Maxwell, T. J.
name: Ruan, J.
name: Thurman-Keup, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We report on the experimental generation of a train of subpicosecond electron bunches. The bunch train generation is accomplished using a beamline capable of exchanging the coordinates between the horizontal and longitudinal degrees of freedom. An initial beam consisting of a set of horizontally-separated beamlets is converted into a train of bunches temporally separated with tunable bunch duration and separation. The experiment reported in this Letter unambiguously demonstrates the conversion process and its versatility.
description: 4 pages, 5 figures, 1 table; accepted for publication in PRL
Mechanisms of neuronal swelling during spreading depolarization
Creators: name: Liu, Yanqi
Publisher: name: University of British Columbia
Year: 2018

description: Spreading depolarization (SD) is a wave of intense depolarization that propagates within the gray matter of the brain. It is implicated in migraine and acute brain injuries such as stroke, subarachnoid hemorrhage, and trauma. SD is thought to contribute to the expansions of infarct volume in energy compromised brains. Understanding SD and the associated cellular changes will provide basic knowledge to the field of neurophysiology, and will help identify potential therapeutic targets. The experimental methodologies designed to examine SD properties in acutely prepared brain slices are described in Chapter 2. Techniques used in this study involved simultaneous two photon laser scanning microscopy, intrinsic optical signal (IOS) imaging, electrophysiology, pharmacology, and siRNA delivery by lipid nanoparticles (LNP). In Chapter 3, experimental investigations that tested the contribution of neuronal swelling to the IOS changes in SD, as well as the potential role(s) for SLC26A11 chloride channel to neuronal swelling are described. The pharmacological agent GlyH-101 (an inhibitor of SLC26A11 and other chloride channels) reduced neuronal swelling while other properties of SD were unaltered. This suggests that neuronal swelling likely occurs downstream, or in parallel with other cellular processes. Interestingly, the temporal profiles of neuronal swelling and IOS were not correlated, suggesting that other cellular mechanisms generate IOS changes during SD. I also demonstrated that LNP-mediated delivery of siRNA was effective in gene knock-down in vitro but not in vivo. This was further supported by the lack of functional effect during SD in Slc26a11 siRNA treated samples compared to control siRNAs. Finally, I mimicked situations of mild energy failure in brain slices in parallel to SD induction; however, I observed no differences in SD electrical and optical properties compared to control conditions. These data supported the importance of cellular chloride entry in mediating neuronal swelling associated with SD. However, the role for SLC26A11 and the exact molecular mechanism(s) of swelling that are inhibited by GlyH-101 remain unidentified. My data provide insights into the molecular processes during SD, and work towards identifying potential therapeutic targets in neurological disorders associated with SD.
Probing spin-polarized currents in the quantum Hall regime
Creators: name: Herrle, Thomas
name: Leeb, Tobias
name: Schollerer, Guido
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: 530 Physik
subject: 73.43.−f, 72.25.Dc, 72.25.Hg

description: An experiment to probe spin-polarized currents in the quantum Hall regime is suggested that takes advantage of the large Zeeman-splitting in the paramagnetic diluted magnetic semiconductor zinc manganese selenide (Zn1−xMnxSe). In the proposed experiment spin-polarized electrons are injected by ZnMnSe-contacts into a gallium arsenide (GaAs) two-dimensional electron gas (2DEG) arranged in a Hall bar geometry. We calculated the resulting Hall resistance for this experimental setup within the framework of the Landauer–Büttiker formalism. These calculations predict for 100% spin injection through the ZnMnSe-contacts a Hall resistance twice as high as in the case of no spin-polarized injection of charge carriers into a 2DEG for filling factor ν=2.We also investigated the influence of the equilibration of the spin-polarized electrons within the 2DEG on the Hall resistance. In addition, in our model we expect no coupling between the contact and the 2DEG for odd filling factors of the 2DEG for 100% spin injection, because of the opposite sign of the g-factors of ZnMnSe and GaAs.
On the nature of the prototype LBV AG Carinae II. Witnessing a massive star evolving close to the Eddington and bistability limits
Creators: name: Groh, Jose H.
name: Hillier, D. John
name: Damineli, Augusto
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We show that the significantly different effective temperatures (Teff) achieved by the luminous blue variable AG Carinae during the consecutive visual minima of 1985-1990 (Teff= 22,800 K) and 2000-2001 (Teff=17,000 K) place the star on different sides of the bistability limit, which occurs in line-driven stellar winds around Teff ~ 21,000 K. Decisive evidence is provided by huge changes in the optical depth of the Lyman continuum in the inner wind as Teff changes during the S Dor cycle. These changes cause different Fe ionization structures in the inner wind. The bistability mechanism is also related to the different wind parameters during visual minima: the wind terminal velocity was 2-3 times higher and the mass-loss rate roughly two times smaller in 1985-1990 than in 2000-2003. We obtain a projected rotational velocity of 220 +- 50 km/s during 1985-1990 which, combined with the high luminosity (L=1.5x10^6 Lsun), puts AG Car extremely close to the Eddington limit modified by rotation (Omega-Gamma limit): for an inclination angle of 90 deg, Gamma_Omega > 1.0 for M< 60 Msun. Based on evolutionary models and mass budget, we obtain an initial mass of ~ 100 Msun and a current mass of 60-70 Msun for AG Car. Therefore, AG Car is close to, if not at, the Omega-Gamma limit during visual minimum. Assuming M=70 Msun, we find that Gamma_Omega decreases from 0.93 to 0.72 as AG Car expands toward visual maximum, suggesting that the star is not above the Eddington limit during maximum phases.
description: 13 pages, 8 figures, accepted by ApJ
The algebraic hyperstructure of elementary particles in physical theory
Creators: name: Nezhad, Akbar Dehghan
name: Nadjafikhah, Mehdi
name: Nejad, Seyed Mohammad Moosavi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Algebraic hyperstructures represent a natural extension of classical algebraic structures. In a classical algebraic structure, the composition of two elements is an element, while in an algebraic hyperstructure, the composition of two elements is a set. Algebraic hyperstructure theory has a multiplicity of applications to other disciplines. The main purpose of this paper is to provide examples of hyperstructures associated with elementary particles in physical theory.
description: 13 pages
Antitumor activities of novel glycyrrhetinic acid-modified curcumin-loaded cationic liposomes in vitro and in H22 tumor-bearing mice
Creators: name: Chang, Mingxiang
name: Wu, Meimei
name: Li, Hanmin
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: At present, the chemotherapy of advanced inoperable liver cancer is limited with serious side effects. Curcumin possesses multiple cancer preventive activities and low safety concerns. However, its poor solubility and instability in water pose significant pharmacological barriers to its clinical application. In this study, we presented a novel delivery system – the glycyrrhetinic acid modified curcumin-loaded cationic liposomes (GAMCLCL) and investigated its antitumor activities on HepG2 cells in vitro and in H22 tumor-bearing mice. The experimental results demonstrated that GAMCLCL was a cationic liposome and could be Intravenous administration. Compared to free curcumin, GAMCLCL exhibited stronger antitumor activities in vitro and in vivo. The antitumor results of GAMCLCL after intravenous administration were very similar to those after intratumoral administration. The main activities of GAMCLCL and curcumin included inhibition of HepG2 cell proliferation, inhibition of tumor growth, reduction of tumor microvascular density, down-regulation of the expression of VEGF protein, and up-regulation of the expression of Caspases3 protein in H22 tumor tissues. Furthermore, GAMCLCL improved the parameters of WBC, RBC, ALT, CRE, LDH of H22 tumor-bearing mice. Curcumin is a nontoxic natural compound with definite antitumor activities, its antitumor effects can be enhanced by preparation of GAMCLCL.