cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ЎРИК ДАРАХТЛАРИГА ШАКЛ БЕРИШ  ҲАМДА ЁШ НОВДАЛАРИНИ ҚИСҚАРТИРИШНИНГ ҲОСИЛДОРЛИККА ТАЪСИРИ
Creators: name: Қаршиев, А.Э.
name: Юсупова, Б.Э.
name: Умарова, М.А.
Publisher: name: Zenodo
Year: 2024

description: The article describes the formation of branches on trees as a result of pruning of annual vigorous varieties, improving the quality of fruits, studying local and imported varieties of apricot in the Kashkadarya region and identifying promising varieties and other positive features.
X-ray emission from the Ultramassive Black Hole candidate NGC1277: implications and speculation on its origin
Creators: name: Fabian, A. C.
name: Sanders, J. S.
name: Haehnelt, M.
name: Rees, M. J.
name: Miller, J. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the X-ray emission from NGC1277, a galaxy in the core of the Perseus cluster, for which van den Bosch et al. have recently claimed the presence of an UltraMassive Black Hole (UMBH) of mass 1.7 times 10^10 Msun, unless the IMF of the stars in the stellar bulge is extremely bottom heavy. The X-rays originate in a power-law component of luminosity 1.3 times 10^40 erg/s embedded in a 1 keV thermal minicorona which has a half-light radius of about 360 pc, typical of many early-type galaxies in rich clusters of galaxies. If Bondi accretion operated onto the UMBH from the minicorona with a radiative efficiency of 10 per cent, then the object would appear as a quasar with luminosity 10^46 erg/s, a factor of almost 10^6 times higher than observed. The accretion flow must be highly radiatively inefficient, similar to past results on M87 and NGC3115. The UMBH in NGC1277 is definitely not undergoing any significant growth at the present epoch. We note that there are 3 UMBH candidates in the Perseus cluster and that the inferred present mean mass density in UMBH could be 10^5 Msun/Mpc^3, which is 20 to 30 per cent of the estimated mean mass density of all black holes. We speculate on the implied growth of UMBH and their hosts, and discuss the possibiity that extreme AGN feedback could make all UMBH host galaxies have low stellar masses at redshifts around 3. Only those which end up at the centres of groups and clusters later accrete large stellar envelopes and become Brightest Cluster Galaxies. NGC1277 and the other Perseus core UMBH, NGC1270, have not however been able to gather more stars or gas owing to their rapid orbital motion in the cluster core.
description: 5 pages, 4 figures, MNRAS in press
Evaluation of reproductive barriers contributes to the development of novel interspecific hybrids in the Kalanchoe genus
Creators: name: Kuligowska, Katarzyna
name: Lütken, Henrik
name: Christensen, Brian
name: Skovgaard, Ib
name: Linde, Marcus
name: Winkelmann, Traud
name: Müller, Renate
Publisher: name: London : Biomed Central Ltd.
Year: 2015
Subjects: subject: aflp markers
subject: chromosome number
subject: cross-compatibility
subject: endosperm development
subject: genetic distance
subject: pollen tube growth
subject: pre-zygotic barrier
subject: post-zygotic barrier
subject: hybridization
subject: pollen
subject: rhododendron
subject: compatibility
subject: crossability
subject: cultivars
subject: crosses
subject: genera
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Background: Interspecific hybridization is a useful tool in ornamental breeding to increase genetic variability and introduce new valuable traits into existing cultivars. The successful formation of interspecific hybrids is frequently limited by the presence of pre- and post-fertilization barriers. In the present study, we investigated the nature of hybridization barriers occurring in crosses between Kalanchoe species and evaluated possibilities of obtaining interspecific hybrids. Results: The qualitative and quantitative analyses of pollen tube growth in situ were performed following intra-and interspecific pollinations. They revealed occurrence of pre-fertilization barriers associated with inhibition of pollen germination on the stigma and abnormal growth of pollen tubes. Unilateral incongruity related to differences in pistil length was also observed. The pollen quality was identified as a strong factor influencing the number of pollen tubes germinating in the stigma. In relation to post-fertilization barriers, endosperm degeneration was a probable barrier hampering production of interspecific hybrids. Moreover, our results demonstrate the relation of genetic distance estimated by AFLP marker analysis of hybridization partners with cross-compatibility of Kalanchoe species. At the same time, differences in ploidy did not influence the success of interspecific crosses. Conclusions: Our study presents the first comprehensive analysis of hybridization barriers occurring within Kalanchoe genus. Reproductive barriers were detected on both, pre- and post-fertilization levels. This new knowledge will contribute to further understanding of reproductive isolation of Kalanchoe species and facilitate breeding of new cultivars. For the first time, interspecific hybrids between K. nyikae as maternal plant and K. blossfeldiana as well as K. blossfeldiana and K. marnieriana were generated.
The causal meaning of Fisher's average effect
Creators: name: Lee, James J.
name: Chow, Carson C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: In order to formulate the Fundamental Theorem of Natural Selection, Fisher defined the average excess and average effect of a gene substitution. Finding these notions to be somewhat opaque, some authors have recommended reformulating Fisher's ideas in terms of covariance and regression, which are classical concepts of statistics. We argue that Fisher intended his two averages to express a distinction between correlation and causation. On this view the average effect is a specific weighted average of the actual phenotypic changes that result from physically changing the allelic states of homologous genes. We show that the statistical and causal conceptions of the average effect, perceived as inconsistent by Falconer, can be reconciled if certain relationships between the genotype frequencies and non-additive residuals are conserved. There are certain theory-internal considerations favoring Fisher's original formulation in terms of causality; for example, the frequency-weighted mean of the average effects equaling zero at each locus becomes a derivable consequence rather than an arbitrary constraint. More broadly, Fisher's distinction between correlation and causation is of critical importance to gene-trait mapping studies and the foundations of evolutionary biology.
Angio in STEMI, Evaluating Pre-dilatation & Thrombus aspiration_Protocol & Flowdiagram
Creators: name: V, Rekha
name: Guddattu, Vasudeva
name: Rao, Sudhakar
name: Nayak, Krishnananda
name: Prabhu, Sridevi
name: R, Padmakumar
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 320101
subject: Cardiology (incl. cardiovascular diseases)

description: This contains the study protocol and flow diagram of the article titled "Angiographic Outcomes in STEMI Patients: Evaluating Pre-dilatation and Thrombus Aspiration Effects"
title: Arbeitererinnerungen. Lebensläufe einer Generation Nürnberger Metallarbeiter und Arbeiterfrauen. Eine Ausstellung des Centrum Industriekultur Norishalle 29. 06. - 19. 08. 1984
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
Comparisons of annual modulations in MINOS with the event rate modulation in CoGeNT
Creators: name: MINOS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The CoGeNT collaboration has recently published results from a fifteen month data set which indicate an annual modulation in the event rate similar to what is expected from weakly interacting massive particle interactions. It has been suggested that the CoGeNT modulation may actually be caused by other annually modulating phenomena, specifically the flux of atmospheric muons underground or the radon level in the laboratory. We have compared the phase of the CoGeNT data modulation to that of the concurrent atmospheric muon and radon data collected by the MINOS experiment which occupies an adjacent experimental hall in the Soudan Underground Laboratory. The results presented are obtained by performing a shape-free $χ^{2}$ data-to-data comparison and from a simultaneous fit of the MINOS and CoGeNT data to phase-shifted sinusoidal functions. Both tests indicate that the phase of the CoGeNT modulation is inconsistent with the phases of the MINOS muon and radon modulations at the \unit[3.0]{$σ$} level.
description: 8 pages, 4 figures
Graphene field-effect transistors with gigahertz-frequency power gain on flexible substrates
Creators: name: Petrone, Nicholas
name: Meric, Inanc
name: Hone, James
name: Shepard, Kenneth L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The development of flexible electronics operating at radio-frequencies (RF) requires materials that combine excellent electronic performance and the ability to withstand high levels of strain. In this work, we fabricate graphene field-effect transistors (GFETs) on flexible substrates from graphene grown by chemical vapor deposition (CVD). Our devices demonstrate unity-current-gain frequencies, fT, and unity-power-gain frequencies, fmax, up to 10.7 and 3.7 GHz, respectively, with strain limits of 1.75%. These devices represent the only reported technology to achieve gigahertz-frequency power gain at strain levels above 0.5%. As such, they demonstrate the potential of CVD graphene to enable a broad range of flexible electronic technologies which require both high-flexibility and RF operation.
description: 18 pages with 5 figures
D7.5 Second set of recommendations for future rural policies
Creators: name: Chartier, Olivier
name: Irvine, Katherina
name: Martino, Giulia
name: Miller, David
name: Muro, M
name: Pagnon, J
name: Salle, Elodie
name: Schwarz, Gerald
name: Zomer, Brigit
Publisher: name: Zenodo
Year: 2023

description: This deliverable reports the second set of policy recommendations of the SHERPA project, developed from  its Multi-Actor Platforms (MAPs). It builds on the first set of recommendations for policy and actions which  contributed to planning of the Long Vision for Rural Areas (LTVRA; European Commission, 2021a) and its Rural Action Plan.
Pipe internal recirculation in storage connections - Characteristics and influencing parameters
Creators: name: Steinweg, Jan
name: Kliem, Francis
name: Rockendorf, Gunter
Publisher: name: London : Elsevier Ltd.
Year: 2014
Subjects: subject: Heat losses
subject: Heat trap
subject: Micro-circulation
subject: Pipe connection
subject: Pipe internal recirculation
subject: Thermal storage
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Pipe internal recirculation (PIR) is an undesired phenomenon which may lead to significant additional heat losses. Although different research institutes already measured singular PIR effects, there is still a lack of wide-ranging evaluations and practical solutions. This paper describes a test and evaluation method and reports on results regarding the influence of the pipe's slope, the material (copper, stainless steel) and diameter on the PIR caused heat loss coefficient. For combined pipe path arrangements a new method is presented, which allows to calculate the heat losses from basic investigations on horizontal and vertical pipe orientations. This method has been experimentally validated. Finally, the effectiveness of different measures for the reduction of PIR induced heat losses is presented.
MPEC 2023-V233 : 2023 VE8
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VE8

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Industrial cleaning sequences for Al2O3-passivated PERC solar cells
Creators: name: Kranz, Christopher
name: Wyczanowski, Sabrina
name: Baumann, Ulrike
name: Dorn, Silke
name: Queisser, Steffen
name: Schweckendiek, Jürgen
name: Pysch, Damian
name: Dullweber, Thorsten
Publisher: name: London : Elsevier Ltd.
Year: 2014
Subjects: subject: Cleaning sequences
subject: PERC solar cells
subject: Screen-printing
subject: Wet chemical polishing
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: In this paper, we investigate different industrial applicable cleaning sequences on test wafers and PERC solar cells in comparison to a laboratory type RCA clean. The cleaning sequences pSC1, HF/HCl, HF/O3 and HF/O3 show lifetimes between 1 ms and 2 ms which is comparable to a laboratory type RCA clean corresponding to a surface recombination velocity Spass below 15 cm/s. The pSC1, HF/HCl clean achieves lifetimes around 1 ms, whereas the PSG-etch shows poor cleaning quality with lifetimes around 500 μs. Reference PERC cells using a rear protection layer before texturing and diffusion demonstrate efficiencies up to 20.4% for the cleaning sequence pSC1, HF/HCl prior to passivation which is comparable to the RCA clean. The HF/O3 cleans result in lower PERC efficiencies up to 20.0% mainly due to a lower Fill Factor which is likely caused by etching of the emit ter and hence increased contact resistance. Investigations of polished test wafers show that the cleaning sequences pSC1, HF/HCl, HF-Dip and pSC1, HF/HCl, HF/O3 are able to sufficiently remove porous silicon from the front side and simultaneously allowing excellent rear surface passivation. A first batch of PERC solar cell results with polished rear surface post texturing and POCl3 diffusion achieves efficiencies of up to 20.7% when applying an RCA clean. However, the pSC1, HF/HCl and pSC1 HF/O3 still exhibit significantly lower efficiencies since in this batch the porous silicon of the emitter was not yet sufficiently removed, which is subject to further optimization.
Hidden beauty baryon states in the local hidden gauge approach with heavy quark spin symmetry
Creators: name: Xiao, C. W.
name: Oset, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using a coupled channel unitary approach, combining the heavy quark spin symmetry and the dynamics of the local hidden gauge, we investigate the meson-baryon interaction with hidden beauty and obtain several new states of $N^*$ around 11 GeV. We consider the basis of states $η_b N$, $ΥN$, $B Λ_b$, $B Σ_b$, $B^* Λ_b$, $B^* Σ_b$, $B^* Σ_b^*$ and find four basic bound states which correspond to $B Σ_b$, $B Σ_b^*$, $B^* Σ_b$ and $B^* Σ_b^*$, decaying mostly into $η_b N$ and $ΥN$ and with a binding energy about 50-130 MeV with respect to the thresholds of the corresponding channel. All of them have isospin $I=1/2$, and there are no bound states or resonances in $I=3/2$. The $B Σ_b$ state appears in $J=1/2$, the $B Σ_b^*$ in $J=3/2$, the $B^* Σ_b$ appears nearly degenerate in $J=1/2, ~3/2$ and the $B^* Σ_b^*$ appears nearly degenerate in $J=1/2, ~3/2, ~5/2$. These states have a width from $6 \sim 45 \mev$ except for the one in $J=5/2$ which has zero width since it cannot decay into any of the states of the basis chosen.
description: misprint corrected
title: ПРОИЗВОДСТВО ГОВЯДИНЫ ПРИ РЕКОНСТРУКЦИИ СТРУКТУРЫ СТАДА НА ФЕРМЕ. СБОРНИК НАУЧНЫХ ТРУДОВ КНЦЗВ. - 2019. - Т. 8. - № 2
Creators: name: Кучерявенко, Алексей
name: Головань, Валентин
name: Ярмоц, Александр
Publisher: name: ФГБНУ КНЦЗВ
Year: 2019

description: В статье рассматривается новый способ увеличения поголовья, живой массы скота и мясной продуктивности за счет изменения структуры стада с повышением доли телок. Использование разработанного способа выращивание ремонтных первотелок приводит к повышению поголовья и количества мяса в живом весе на ферме.
description: The paper discusses a new way to increase livestock, live weight of the cattle and beef productivity by changing the structure of the herd with an increase in the proportion of heifers. The use of the developed method of growing replacement heifers leads to an increase in livestock and the amount of beef in live weight on the farm.
Einsatz elastischer Niederhaltersysteme zur Erweiterung der Prozeßgrenzen beim Tiefziehen
Creators: name: Elend, Lutz-Eike
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Sheet metal forming
subject: deep drawing
subject: blank holder
subject: design
subject: elasticity
subject: FE-simulation
subject: process stability
subject: tilt compensation
subject: tailored blanks
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
title: Das Ausstellungsprojekt für 1985. 10. Mai bis 25. August 1985. Leben und Arbeiten im Industriezeitalter, Eine Ausstellung zur Wirtschafts- und Sozialgeschichte Bayerns seit 1850
Creators: name: Deneke, Bernward
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
title: НОВЫЙ СПОСОБ ОПРЕДЕЛЕНИЯ МОЛОЧНОЙ ПРОДУКТИВНОСТИ КОРОВ. СБОРНИК НАУЧНЫХ ТРУДОВ КНЦЗВ. - 2019. - Т. 8. - № 2
Creators: name: Головань, Валентин
name: Юрин, Денис
name: Кучерявенко, Алексей
name: Куликова , Надежда
Publisher: name: ФГБНУ КНЦЗВ
Year: 2019

description: В статье рассматривается новый способ определения молочной продуктивности коров, обеспечивающего снижение трудозатрат и рабочего времени операторов и лаборантов на определение молочной продуктивности коров за сутки, а также снижение стрессовой нагрузки на животных.
description: The paper discusses a new method for determining the milk productivity of cows, which reduces the labor costs and working hours of operators and technicians to determine the milk productivity of cows per day, as well as reducing the stress load on animals.
The gauge transformation of the constrained semi-discrete KP hierarchy
Creators: name: Li, Maohua
name: Cheng, Jipeng
name: He, Jingsong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37K10, 37K40, 35Q51, 35Q55

description: In this paper, the gauge transformation of the constrained semi-discrete KP(cdKP) hierarchy is constructed explicitly by the suitable choice of the generating functions. Under the $m$-step successive gauge transformation $T_m$, we give the transformed (adjoint) eigenfunctions and the $τ$-function of the transformed Lax operator of the cdKP hierarchy.
description: 13 pages, accepted by Modern Physics Letters B
Diagnoseverfahren zur Schwingungs- und Körperschallüberwachung in Siedewasserreaktoren
Creators: name: Heidemann, Peter
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Loose part monitoring
subject: vibration monitoring
subject: boiling water reactor
subject: Dewey Decimal Classification::600 | Technik

description: [no abstract]
Lithographie und Materialwellenoptik mit lasergekühlten Atomstrahlen
Creators: name: Engels, Peter
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Atom optics
subject: lithography
subject: quantum optics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Stability of stationary solutions for nonintegrable peakon equations
Creators: name: Hone, Andrew
name: Lafortune, Stephane
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Camassa-Holm equation with linear dispersion was originally derived as an asymptotic equation in shallow water wave theory. Among its many interesting mathematical properties, which include complete integrability, perhaps the most striking is the fact that in the case where linear dispersion is absent it admits weak multi-soliton solutions - "peakons" - with a peaked shape corresponding to a discontinuous first derivative. There is a one-parameter family of generalized Camassa-Holm equations, most of which are not integrable, but which all admit peakon solutions. Numerical studies reported by Holm and Staley indicate changes in the stability of these and other solutions as the parameter varies through the family. In this article, we describe analytical results on one of these bifurcation phenomena, showing that in a suitable parameter range there are stationary solutions - "leftons" - which are orbitally stable.
Nano-plasmonic near field phase matching of attosecond pulses
Creators: name: Shaaran, Tahir
name: Nicolas, Rana
name: Iwan, Bianca
name: Kovacev, Milutin
name: Merdji, Hamed
Publisher: name: London : Nature Publishing Group
Year: 2017
Subjects: subject: HHG
subject: XUV
subject: high-order harmonic generation
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Nano-structures excited by light can enhance locally the electric field when tuned to plasmonic resonances. This phenomenon can be used to boost non-linear processes such as harmonic generation in crystals or in gases, Raman excitation, and four wave mixing. Here we present a theoretical investigation of the near-field phase matching of attosecond pulses emitted by high-order harmonic generation (HHG) of an atom immersed in a multi-cycle femtosecond infrared laser field and a spatially inhomogeneous plasmonic field. We demonstrate that the spatial inhomogeneity factor of the plasmonic field strongly affects the electron trajectory and recombination time which can be used to control the attosecond emission. For further insight into the plasmonic field effect, we monitor the phase of each quantum path as a function of the inhomogeneity strength. Moreover, we investigate the attosecond emission as a function of near-field phase matching effects. This is achieved by calculating the coherent field superposition of attosecond pulses emitted from various intensities or field inhomogeneities. Finally, far-field and near-field phase matching effects are combined to modulate the harmonic spectral phase towards the emission of a single attosecond pulse.
title: Das Ausstellungsprojekt für 1985. 10. Mai bis 25. August 1985. Leben und Arbeiten im Industriezeitalter. Eine Ausstellung zur Wirtschafts- und Sozialgeschichte Bayerns seit 1850. Technik und Ästhetik
Creators: name: Götz, Norbert
name: Pese, Claus
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
Spectral function of the Bloch-Nordsieck model at finite temperature
Creators: name: Jakovac, A.
name: Mati, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we determine the exact fermionic spectral function of the Bloch-Nordsieck model at finite temperature. Analytic results are presented for some special parameters, for other values we have numerical results. The spectral function is finite and normalizable for any nonzero temperature values. The real time dependence of the retarded Green's function is power-like for small times and exhibits exponential damping for large times. Treating the temperature as an infrared regulator, we can also give a safe interpretation of the zero temperature result.
description: 16 pages, 9 figures, revtex4-1
Classification of defective regions in p-type multicrystalline silicon by comparing luminescence images measured under different conditions
Creators: name: Krain, Rafael
name: Beljakova, Svetlana
name: Herlufsen, Sandra
name: Krieger, Michael
name: Schmidt, Jan
Publisher: name: London : Elsevier Ltd.
Year: 2013
Subjects: subject: Defects
subject: luminescence
subject: multicrystalline silicon
subject: DLTS
subject: FeB
subject: ZnB
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: In this contribution, we apply three different camera-based luminescence imaging techniques to mc-Si wafers and solar cells, fabricated on neighboring wafers. On wafer level, we determine the spatially-resolved carrier lifetime using calibrated photoluminescence lifetime imaging. On the solar cell level, we use band-to-band electroluminescence and sub-band-gap electroluminescence imaging for the characterisation. We analyze the differences obtained by the different techniques in specific defective areas. Characteristic regions are additionally examined using deep-level transient spectroscopy (DLTS). Comparing different luminescence images, we find different signal correlations in selected regions of the wafers and the neighboring cells presumably caused by different types of defects, which react more or less effective on the phosphorus gettering during the solar cell process. DLTS spectra show that in the edge region of the wafer close to the crucible, FeB pairs are present in the wafer as well as in the cell. However, the FeB concentration in the cell is, due to phosphorus gettering during the cell process, reduced by one order of magnitude. In regions which appear as very recombination-active defect clusters in the solar cell, we detect ZnB pairs by DLTS analysis. Note that the ZnB itself is a shallow centre and therefore expected to be not strong recombination active. However, our measurements reveal that Zn is present in regions with increased recombination activity, which is also in good agreement with the high total Zn concentration measured in the mc-Si ingot. We hence conjecture that dislocation clusters decorated by Zn are responsible for the non-getterable defect regions.
title: Grignard synthesis of fluorinated nanoporous element organic frameworks based on the heteroatoms P, B, Si, Sn and Ge
Creators: name: Kann, Anna
name: Krüger, Andreas J. D.
name: Rose, Marcus
name: Hausoul, Peter J. C.
Publisher: name: Royal Society of Chemistry
Year: 2023

description: We present the synthesis and characterization of fluorinated polymers based on P, B, Si, Sn and Ge as heteroatoms via Grignard activation. The polymers are microporous with hydrophobic surfaces. The borate-based polymer was successfully applied as solid acid catalyst in the esterification of acetic acid with ethanol. Grignard synthesis of fluorinated nanoporous element organic frameworks based on the heteroatoms P, B, Si, Sn and Ge Recently, porous polymers have attracted considerable attention as highly versatile materials for adsorption, separation and storage of gases, in catalysis, for optoelectronic applications and energy storage. Especially, metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) are of interest due to their high surface areas and pore volumes. In order to tune the surface polarity, porous ionic organic networks were reported. Depending on the desired properties such as porosity, polarity and functionality, these materials can be tailored for their application by varying the organic linker and connector element. The utilization of fluorinated linkers was reported for different MOFs and a COF, showing enhanced properties in terms of stability, hydrophobicity, gas affinity and selectivity in comparison to their non-fluorinated materials. In continuation of our work on element organic frameworks (EOFs) with P, Si and Sn as connector elements, here we present the synthesis and characterization of respective fluorinated porous polymers with P, B, Si, Sn and Ge as heteroatoms. The catalytic application of the borate based polymer as solid acid catalyst was demonstrated in the esterification of acetic acid with ethanol as test reaction. As the activation of the fluorinated biphenyl linker was not successful neither via lithiation as reported for the non-fluorinated linker nor via classical Grignard reaction, a magnesium-halogen exchange was applied. The linker 4,4′-dibromooctafluorbiphenyl was activated twofold with isopropylmagnesium chloride lithium chloride (turbo Grignard) and subsequent reaction with the respective element chlorides in a one-pot procedure (Scheme 1) resulted in the fluorinated polymers EF-EOF (E = P, B, Si, Sn, Ge). (Perfluorophenyl)-magnesium bromide was used for end-capping, converting remaining E–Cl bonds into E–Ar bonds to form fully substituted trivalent or tetravalent centers, respectively. In all cases, the resulting polymers were obtained as fluffy white powders.
Empowering International PhD Students: Generative AI, Ubuntu, and the Decolonisation of Academic Communication
Creators: name: Pretorius, Lynette
name: Huynh, Huy
name: Pudyanti, Anak
name: Li, Ziqi
name: Noori, Abdul Qawi
name: Zhou, Zhiheng
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 390203
subject: Sociology of education
classificationCode: 390303
subject: Higher education
classificationCode: 390305
subject: Professional education and training
classificationCode: 441004
subject: Social change
classificationCode: 441006
subject: Sociological methodology and research methods
classificationCode: 441007
subject: Sociology and social studies of science and technology
classificationCode: 441008
subject: Sociology of culture
classificationCode: 441012
subject: Sociology of inequalities
classificationCode: 460806
subject: Human-computer interaction
classificationCode: 460907
subject: Information systems for sustainable development and the public good
classificationCode: 460299
subject: Artificial intelligence not elsewhere classified
classificationCode: 470213
subject: Postcolonial studies
classificationCode: 500103
subject: Ethical use of new technology
classificationCode: 500104
subject: Human rights and justice issues (excl. law)

description: This study explores the role of generative AI in enhancing the academic experiences of international PhD students through the lens of Ubuntu, a Southern African philosophy that emphasises interconnectedness and community. By adopting a collaborative autoethnographic approach, five international PhD students and their PhD supervisor examine how generative AI tools support their personalised learning, academic socialisation, and professional development. Importantly, the study reconceptualises the use of generative AI as a democratising force in academia, particularly for scholars navigating academic and social barriers. Through the Ubuntu philosophy, the research highlights how generative AI fosters inclusivity, enabling students to contribute more meaningfully to their academic communities. The findings reveal that while generative AI significantly enhances productivity and communication, its true value lies in its ability to foster connections, build relationships, and support the holistic wellbeing of scholars. This paper argues that embracing generative AI can help decolonise academic practices, promote epistemic justice, and create a more equitable scholarly environment for all.This record includes the full paper as well as two datasets which are all made available for use by other researchers under the CC-BY 4.0 licence. This paper and the associated data for the project have been made available via pre-print for two key reasons. Firstly, given the rapidly evolving landscape of generative AI research, we aimed to share our findings promptly, allowing other scholars to build on our work without delay. Secondly, in alignment with our commitment to democratising knowledge creation and dissemination in academia, we sought to make our research as widely accessible as possible to foster inclusivity and collaboration across the scholarly community.
Impact of Orientation on the Vitamin D Weighted Exposure of a Human in an Urban Environment
Creators: name: Schrempf, Michael
name: Thuns, Nadine
name: Lange, Kezia
name: Seckmeyer, Gunther
Publisher: name: Basel : MDPI AG
Year: 2017
Subjects: subject: UV radiation
subject: human exposure
subject: vitamin D
subject: urban environment
subject: hemispherical sky images
subject: radiance
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: The vitamin D₃-weighted UV exposure of a human with vertical posture was calculated for urban locations to investigate the impact of orientation and obstructions on the exposure. Human exposure was calculated by using the 3D geometry of a human and integrating the radiance, i.e., the radiant energy from the direct solar beam and the diffuse sky radiation from different incident and azimuth angles. Obstructions of the sky are derived from hemispherical images, which are recorded by a digital camera with a fisheye lens. Due to the low reflectivity of most surfaces in the UV range, the radiance from obstructed sky regions was neglected. For spring equinox (21 March), the exposure of a human model with winter clothing in an environment where obstructions cover 40% of the sky varies by up to 25%, depending on the orientation of the human model to the sun. The calculation of the accumulated vitamin D₃-weighted exposure of a human with winter clothing walking during lunch break shows that human exposure is reduced by the obstruction of buildings and vegetation by 40%.
The dramatic change of the fossil magnetic field of HD 190073: evidence of the birth of the convective core in a Herbig star ?
Creators: name: Alecian, E.
name: Neiner, C.
name: Mathis, S.
name: Catala, C.
name: Kochukhov, O.
name: Landstreet, J.
name: collaboration, the MiMeS
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In the context of the ESPaDOnS and Narval spectropolarimetric surveys of Herbig Ae/Be stars, we discovered and then monitored the magnetic field of HD 190073 over more than four years, from 2004 to 2009. Our observations all displayed similar Zeeman signatures in the Stokes V spectra, indicating that HD 190073 hosted an aligned dipole, stable over many years, consistent with a fossil origin. We obtained new observations of the star in 2011 and 2012 and detected clear variations of the Zeeman signature on timescales of days to weeks, indicating that the configuration of its field has changed between 2009 and 2011. Such a sudden change of external structure of a fossil field has never previously been observed in any intermediate or high-mass star. HD 190073 is an almost entirely radiative pre-main sequence star, probably hosting a growing convective core. We propose that this dramatic change is the result of the interaction between the fossil field and the ignition of a dynamo field generated in the newly-born convective core.
description: 4 pages, 5 figures, accepted for publication in A&A
Toward an asymptotic description of Prandtl–Batchelor flows with corners
Creators: name: VYNNYCKY, MICHAEL
Publisher: name: University of Limerick
Year: 2022
Subjects: Mathematical sciences

description: The Prandtl–Batchelor theorem states that the vorticity in a steady laminar high Reynolds (Re) number flow containing closed streamlines should be constant; however, apart from the simple case of circular streamlines, very little is known about how to determine this constant (x0). This paper revisits earlier work for flow driven by a surrounding smooth moving boundary, with a view to extending it to the case where the enclosing boundary has corners; for this purpose, a benchmark example from the literature for flow inside a semi-circle is considered. However, the subsequent asymptotic analysis for Re >> 1 and numerical experimentation lead to an inconsistency: the asymptotic approach predicts boundary-layer separation, whereas a linearized asymptotic theory and computations of the full Navier–Stokes equations for Re >> 1 do not. Nevertheless, by considering a slightly modified problem instead, which does not suffer from this inconsistency, it is found that, when extrapolating the results of such high-Re computations to infinite Re, the agreement for x0 is around 5%, which is roughly in line with previous comparisons of this type. Possible future improvements of the asymptotic method are also discussed
title: ВЛИЯНИЕ АДАПТОГЕНОВ НОВОГО ПОКОЛЕНИЯ НА ПРОДУКТИВНОСТЬ СВИНЕЙ. СБОРНИК НАУЧНЫХ ТРУДОВ КНЦЗВ. - 2019. - Т. 8. - № 2
Creators: name: Остренко, Константин
name: Галочкина, Валентина
Publisher: name: ФГБНУ КНЦЗВ
Year: 2019

description: цель исследования – разработка нового антистрессового препарата для снижения воздействия технологических стресс-факторов при выращивании и откорме свиней. Эксперимент проведен на свиньях породы ирландский ландрас АО «Шумятино» Калужской области. В опытных группах прирост живой массы за весь период опыта был выше, чем в контрольной группе, таким образом аскорбата лития обладает выраженные адаптогенные и стресспротекторные свойства.
description: the objective of the study was the development of a new anti-stress preparation to reduce the impact of technological stress factors in the cultivation and fattening of pigs. The experiment was carried out on pigs of Ireland Landrace breed at the JSC "Shumiatino" in Kaluga region. In the experimental groups, live weight gain for the whole period of experiment was higher than in the control group, thus lithium ascorbate has pronounced adaptogenic and stress-protection properties.
Random Matrix Theory approach to Mesoscopic Fluctuations of Heat Current
Creators: name: Schmidt, Martin
name: Kottos, Tsampikos
name: Shapiro, Boris
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider an ensemble of fully connected networks of N oscillators coupled harmonically with random springs and show, using Random Matrix Theory considerations, that both the average phonon heat current and its variance are scale-invariant and take universal values in the large N-limit. These anomalous mesoscopic uctuations is the hallmark of strong correlations between normal modes.
description: 6 pages,3 figures
title: ПЕРСПЕКТИВА ВНЕДРЕНИЯ  АЛЬТЕРНАТИВНЫХ ИСТОЧНИКОВ ЭНЕРГИИ В  МОЛОЧНЫХ ХОЗЯЙСТВАХ СТАВРОПОЛЬСКОГО КРАЯ. СБОРНИК НАУЧНЫХ ТРУДОВ КНЦЗВ. - 2019. - Т. 8. - № 2
Creators: name: Сулыга, Наталья
Publisher: name: ФГБНУ КНЦЗВ
Year: 2019

description: Основным трендом сельского хозяйства на ближайшие десятилетия является развитие органических ферм. Известный факт, что в современных реалиях многие производители неохотно внедряют технологические элементы, влияющие на комфортный микроклимат в коровниках, так как это значительно увеличивает потребляемую энергию и конечную себестоимость продукции. Внедрение альтернативных источников энергии на молочных фермах, позволит не только увеличить энергоэффективность производства, но также позволит сократить  санитарную зону ферм.
description: The main trend of agriculture in the coming decades is the development of organic farms. It is known that in modern re-alities, many producers are reluctant to introduce technological elements that affect the comfortable microclimate in the barns, as it significantly increases the energy consumed and the final cost of production. The introduction of alternative energy sources on dairy farms will not only increase the energy efficiency of production, but also reduce the sanitary zone of farms.
Synchronization properties of self-sustained mechanical oscillators
Creators: name: Arroyo, Sebastian I.
name: Zanette, Damian H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study, both analytically and numerically, the dynamics of mechanical oscillators kept in motion by a feedback force, which is generated electronically from a signal produced by the oscillators themselves. This kind of self-sustained systems may become standard in the design of frequency-control devices at microscopic scales. Our analysis is thus focused on their synchronization properties under the action of external forces, and on the joint dynamics of two to many coupled oscillators. Existence and stability of synchronized motion are assessed in terms of the mechanical properties of individual oscillators --namely, their natural frequencies and damping coefficients-- and synchronization frequencies are determined. Similarities and differences with synchronization phenomena in other coupled oscillating systems are emphasized.
description: To appear in Phys. Rev. E
The 1.7 Å crystal structure of the C5a peptidase from Streptococcus agalactiae (ScpB) reveals an active site competent for catalysis
Creators: name: Cullen, Ruth
name: Teçza, Malgorzata
name: Miclot, Tom
name: Behan, Senan
name: Jain, Monica
name: Klein Avink, Marjet
name: COONEY, JAKKI
name: Kagawa, Todd
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences

description: A 1.7 Å structure is presented for an active form of the virulence factor ScpB, the C5a peptidase from Streptococcus agalactiae. The previously reported structure of the ScpB active site mutant exhibited a large separation (~20 Å) between the catalytic His and Ser residues. Significant differences are observed in the catalytic domain between the current and mutant ScpB structures resulting with a high RMSDCα (4.6 Å). The fold of the active form of ScpB is nearly identical to ScpA (RMSDCα 0.2 Å), the C5a-peptidase from Streptococcus pyogenes. Both ScpA and ScpB have comparable activity against human C5a, indicating neither enzyme require host proteins for C5a-ase activity. These studies are a first step in resolving reported differences in the specificities of these enzymes.
Light-induced lifetime degradation in boron-doped Czochralski silicon: Are oxygen dimers involved?
Creators: name: Voronkov, Vladimir V.
name: Falster, Robert
name: Bothe, Karsten
name: Lim, Bianca
Publisher: name: London : Elsevier Ltd.
Year: 2013
Subjects: subject: Boron
subject: Lifetime degradation
subject: Oxygen
subject: Silicon
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Light-induced electron lifetime degradation in boron-doped Czochralski silicon was studied before and after a prolonged annealing at 350°C (up to 120 h) and 300°C (up to 8 weeks). Such a heat treatment is known to reduce significantly by a factor of 3 or more - the concentration of oxygen dimers. The lifetime degradation observed in these samples was not however remarkably reduced; on the contrary, it was sometimes slightly increased. This result shows unambiguously that oxygen dimers - present in the material before illumination - do not participate in formation of the lifetime-degrading centres. This conclusion is in line with some other features of the degradation. The known proportionality of the centre density to the squared oxygen concentration and to the boron concentration can originate from BsO2 defects already present before illumination in a concentration which depends on thermal history and, in particular, may slightly increase during above-mentioned prolonged annealing.
Epitaktisches Wachstum von Metall- und Oxidschichten
Creators: name: Goldbach, Hanno
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Growth
subject: oxidefilms
subject: metalfilms
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Data Driven High Quantum Yield Halide Perovskite Phosphors Design and Fabrication
Creators: name: Mai, Haoxin
name: Wen, Xiaoming
name: Li, Xuying
name: Dissanayake, Nethmi S. L.
name: Sun, Xueqiang
name: Lu, Yuerui
name: Le, Tu C
name: Russo, Salvy P.
name: Chen, Dehong
name: Winkler, David
name: Caruso, Rachel
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 40
subject: Engineering

description: Abstract: The outstanding emission of halide perovskites make them ideal candidates for white emission lightemitting diodes (LEDs) for lighting applications. However, many perovskites contain toxic or scarce elements and have unsatisfactory stability. Here, we report a target-driven approach, based on active learning (AL) techniques, to discover halide perovskites suitable for commercial LED applications. Based on the similarity between halide and oxide perovskites, a model trained on an oxide perovskite dataset plus six AL-selected halide perovskites exhibited excellent performance for photoluminescence quantum yield (PLQY) predictions of oxide and halide perovskites. The model proposed a strong relationship between ionic radii and PLQY, postulated to be due to the self-trap excitons derived from the Jahn-Teller deformation. A novel halide perovskite phosphor, Cs4Zn(Bi0.85Sb0.15)2Cl12:0.01Mn, was designed and synthesized with the aid of the model. It exhibited an 88 % PLQY and outstanding thermal and luminescent stability. A simple white LED was fabricated from this material, exemplifying its commercial potential. This study demonstrates how machine learning techniques can accelerate discovery of next-generation phosphors for high performance single emitter-based white-light emitting devices.
Histogram Monte Carlo Simulation of the Geometrically Frustrated XY Antiferromagnet with Biquadratic Exchange
Creators: name: Žukovič, M.
name: Idogaki, T.
name: Takeda, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Histogram Monte Carlo simulation is used to investigate effects of biquadratic exchange $J_{2}$ on phase transitions of a 3D classical XY antiferromagnet with frustration induced by the antiferromagnetic exchange $J_{1}$ and the stacked triangular lattice geometry. The biquadratic exchange is considered negative (antiferroquadrupolar) within the triangular planes and positive (ferroquadrupolar) between the planes. The phase diagram obtained features a variety of interesting phenomena arising from the presence of both the biquadratic exchange and frustration. In a strong biquadratic exchange limit ($|J_{1}|/|J_{2}| \leq 0.25$), the antiferroquadrupolar phase transition which is of second order is followed by the antiferromagnetic one which can be either first or second order. The separate antiferroquadrupolar and antiferromagnetic second-order transitions are found to belong to the chiral XY and Ising universality classes, respectively. If the biquadratic exchange is reduced both transitions are found to be first order and occur simultaneously in a wide region of $|J_{1}|/|J_{2}|$. However, if $|J_{2}| \rightarrow 0$ the transition changes to the second-order one with the chiral universality class critical behavior.
description: 23 pages, 12 figures. arXiv admin note: substantial text overlap with arXiv:1301.1586