cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gute fachliche Praxis im Bundesbodenschutzgesetz
Creators: name: Sommer, Claus
name: Kloepfer, Florian
Publisher: name: LANDTECHNIK
Year: 1999

description: Der Landwirt greift mit einer Reihe von Maßnahmen in das komplexe Wirkungsgefüge „Boden – Pflanze – Klima“ ein. Dazu gehören etwa Fruchtfolgegestaltung, Nährstoffzufuhr oder Bodenbearbeitung. Hierbei setzt er mit Vorteil eine breite Palette ein, die er aus Kostengründen optimal ausnutzen muss. Andererseits sind beim Einsatz der Betriebsmittel schädliche Nebeneffekte zu vermeiden, um dem Ziel heutiger Landbewirtschaftung, wettbewerbsfähig und zugleich umweltschonend zu sein, gerecht zu werden. Die gute fachliche Praxis soll dazu beitragen, mögliche Zielkonflikte hierbei zu vermeiden oder solchen vorzubeugen. Das „Gesetz zum Schutz des Bodens“ verfolgt den Zweck (§ 1), „nachhaltig die Funktionen des Bodens zu sichern oder wiederherzustellen“.
description: LANDTECHNIK, Bd. 54 Nr. 1 (1999)
Additional file 4 of Identification of MFGE8 and KLK5/7 as mediators of breast tumorigenesis and resistance to COX-2 inhibition
Creators: name: Tian, Jun
name: Wang, Vivian
name: Wang, Ni
name: Baharak Khadang
name: Boudreault, Julien
name: Khldoun Bakdounes
name: Ali, Suhad
name: Lebrun, Jean-Jacques
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4:. Figure S4. mRNA expression levels of 10 candidate genes across various sample types (primary tumor, metastatic tumor, solid normal tissue) in TCGA dataset.
A Modified Batch Intrinsic Plasticity Method for Pre-training the Random Coefficients of Extreme Learning Machines
Creators: name: Dong, Suchuan
name: Li, Zongwei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In extreme learning machines (ELM) the hidden-layer coefficients are randomly set and fixed, while the output-layer coefficients of the neural network are computed by a least squares method. The randomly-assigned coefficients in ELM are known to influence its performance and accuracy significantly. In this paper we present a modified batch intrinsic plasticity (modBIP) method for pre-training the random coefficients in the ELM neural networks. The current method is devised based on the same principle as the batch intrinsic plasticity (BIP) method, namely, by enhancing the information transmission in every node of the neural network. It differs from BIP in two prominent aspects. First, modBIP does not involve the activation function in its algorithm, and it can be applied with any activation function in the neural network. In contrast, BIP employs the inverse of the activation function in its construction, and requires the activation function to be invertible (or monotonic). The modBIP method can work with the often-used non-monotonic activation functions (e.g. Gaussian, swish, Gaussian error linear unit, and radial-basis type functions), with which BIP breaks down. Second, modBIP generates target samples on random intervals with a minimum size, which leads to highly accurate computation results when combined with ELM. The combined ELM/modBIP method is markedly more accurate than ELM/BIP in numerical simulations. Ample numerical experiments are presented with shallow and deep neural networks for function approximation and boundary/initial value problems with partial differential equations. They demonstrate that the combined ELM/modBIP method produces highly accurate simulation results, and that its accuracy is insensitive to the random-coefficient initializations in the neural network. This is in sharp contrast with the ELM results without pre-training of the random coefficients.
description: 33 pages, 26 figures
Bioporen fördern die Versickerung
Creators: name: Tebrügge, Friedrich
name: Abelsova, Jarmila
Publisher: name: LANDTECHNIK
Year: 1999

description: Langfristige Bodenbearbeitungsversuche auf geogen unterschiedlichen Standorten zeigen, dass sich eine hohe Bodenbearbeitungsintensität auf die biogene Durchporung des Bodens negativ auswirkt, was zu einer verminderten Ver­sickerungsleistung führt. Direktsaat begünstigt dagegen den Populationsaufbau und die Aktivität der Regenwürmer, wodurch ein stabiles, vertikal orientiertes Makroporensystem mit hoher Funktionalität entsteht, sodass Überschusswasser rasch in tiefere Bodenschichten abgeleitet und damit der Bodenerosion entgegengewirkt werden kann.
description: LANDTECHNIK, Bd. 54 Nr. 1 (1999)
Path integral representations in noncommutative quantum mechanics and noncommutative version of Berezin-Marinov action
Creators: name: Gitman, D. M.
name: Kupriyanov, V. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is known that actions of field theories on a noncommutative space-time can be written as some modified (we call them $θ$-modified) classical actions already on the commutative space-time (introducing a star product). Then the quantization of such modified actions reproduces both space-time noncommutativity and usual quantum mechanical features of the corresponding field theory. The $θ$-modification for arbitrary finite-dimensional nonrelativistic system was proposed by Deriglazov (2003). In the present article, we discuss the problem of constructing $θ$-modified actions for relativistic QM. We construct such actions for relativistic spinless and spinning particles. The key idea is to extract $θ$-modified actions of the relativistic particles from path integral representations of the corresponding noncommtative field theory propagators. We consider Klein-Gordon and Dirac equations for the causal propagators in such theories. Then we construct for the propagators path-integral representations. Effective actions in such representations we treat as $θ$-modified actions of the relativistic particles. To confirm the interpretation, we quantize canonically these actions. Thus, we obtain the Klein-Gordon and Dirac equations in the noncommutative field theories. The $θ$-modified action of the relativistic spinning particle is just a generalization of the Berezin-Marinov pseudoclassical action for the noncommutative case.
On plane wave solutions in Lorentz-violating extensions of gravity
Creators: name: Nascimento, J. R.
name: Petrov, A. Yu.
name: Vieira, A. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we obtain dispersion relations corresponding to plane wave solutions in various Lorentz-breaking extensions of gravity with dimensions 3, 4, 5 and 6. We demonstrate that these dispersion relations display an usual Lorentz-invariant mode when the corresponding additive term involves higher derivatives.
description: 14 pages, version accepted to Galaxies
Additional file 5 of Identification of MFGE8 and KLK5/7 as mediators of breast tumorigenesis and resistance to COX-2 inhibition
Creators: name: Tian, Jun
name: Wang, Vivian
name: Wang, Ni
name: Baharak Khadang
name: Boudreault, Julien
name: Khldoun Bakdounes
name: Ali, Suhad
name: Lebrun, Jean-Jacques
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5:. Figure S5. Pearson's correlation analysis of 10 candidate genes expression with COX-2 expression in TNBC patients from TCGA dataset.
Curvature and isocurvature perturbations in two-field inflation
Creators: name: Lalak, Z.
name: Langlois, D.
name: Pokorski, S.
name: Turzynski, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study cosmological perturbations in two-field inflation, allowing for non-standard kinetic terms. We calculate analytically the spectra of curvature and isocurvature modes at Hubble crossing, up to first order in the slow-roll parameters. We also compute numerically the evolution of the curvature and isocurvature modes from well within the Hubble radius until the end of inflation. We show explicitly for a few examples, including the recently proposed model of `roulette' inflation, how isocurvature perturbations affect significantly the curvature perturbation between Hubble crossing and the end of inflation.
description: 29 pages, 12 figures; v2: updated references, discussion extended, matches the published version
On the maximum size of an anti-chain of linearly separable sets and convex pseudo-discs
Creators: name: Pinchasi, Rom
name: Rote, Günter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52C45

description: We show that the maximum cardinality of an anti-chain composed of intersections of a given set of n points in the plane with half-planes is close to quadratic in n. We approach this problem by establishing the equivalence with the problem of the maximum monotone path in an arrangement of n lines. For a related problem on antichains in families of convex pseudo-discs we can establish the precise asymptotic bound: it is quadratic in n. The sets in such a family are characterized as intersections of a given set of n points with convex sets, such that the difference between the convex hulls of any two sets is nonempty and connected.
description: 10 pages, 3 figures. revised version correctly attributes the idea of Section 3 to Tverberg; and replaced k-sets by "linearly separable sets" in the paper and the title. Accepted for publication in Israel Journal of Mathematics
VP13-05 : The Role of Particle Size and Volume Fraction in Ferrite Microwave Absorbers
Creators: Andrew Padgett
Sean Bishop
Daniel Lowry
Amanda Peretti
Matthew Oliveira
Publisher: name: IEEE
Year: 2023

Soft Magnetic Materials (Virtual)
As 5G technology becomes ubiquitous and the internet of things expands, sources of microwave EMI are rapidly increasing, and the threat of coupling EM energy into susceptible electronic circuits. Mitigating this threat requires compact, lightweight broadband absorbers to protect sensitive and high precision electronics. Magnetite, manganese zinc ferrite, and nickel zinc ferrite, alone and in conjunction, have previously been demonstrated to be magnetically and dielectrically lossy up to 18 GHz, and have the potential to meet the energy density and EM attenuation performance needs [1-3]. However, optimizing the absorption loss requires improved understanding of the role of particle size and volume fraction on the complex permittivity and permeability of these materials. This presentation discusses results, up to 20 GHz, from experimentally investigating the particle size, between 5 nm and 100 µm, and volume fraction, between 1 and 50 Vol%, on the absorption losses of these ferrites. Complex permeability and permittivity measurements were conducted to identify the absorption mechanisms. Diminishing returns in absorption were observed at loadings over 30 Vol%, while ferromagnetic resonance increased in frequency as particle size decreased. We present a possible explanation of these results in the context of Snoek’s limit and the Landau-Lifshitz theory of permeability. This work was supported by the Laboratory Directed Research and Development program at Sandia National Laboratories, a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia LLC, a wholly owned subsidiary of Honeywell International Inc. for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.References: [1] T. Tsutaoka, Journal of Applied Physics, Vol. 93, p. 2789 (2003) [2] R. Dosoudil, M. Usáková, J. Franek, IEEE Transactions on Magnetics, Vol. 46, p. 436 (2010) [3] Nan-Nan Jiang, Yang Yang, Yu-Xiang Zhang, Journal of Magnetism and Magnetic Materials, Vol. 401, p. 370 (2016)
Additional file 6 of Identification of MFGE8 and KLK5/7 as mediators of breast tumorigenesis and resistance to COX-2 inhibition
Creators: name: Tian, Jun
name: Wang, Vivian
name: Wang, Ni
name: Baharak Khadang
name: Boudreault, Julien
name: Khldoun Bakdounes
name: Ali, Suhad
name: Lebrun, Jean-Jacques
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6:. Figure S6. a, SUM159 control and KO cell lines were treated with a dose rage of celecoxib for 4 days and subjected to cell viability test using SRB assay. IC50 values of control and each KO cells were indicated. b, Celecoxib dose response curve in SUM159 control, LAMC2, KLK7, MFGE8, KLK5, and SLC2A1 KO cells. c, SUM159 control, LAMC2, MFGE8, KLK5, and SLC2A1 KO cells were treated with 50 μM celecoxib for 4 days and then subjected to Prestoblue cell viability assay. Percentage of living cells after celecoxib treatment was calculated.
The cluster-central compact steep-spectrum radio galaxy 1321+045
Creators: name: O'Sullivan, Ewan
name: Kunert-Bajraszewska, Magdalena
name: Siemiginowska, Aneta
name: Burke, D. J.
name: Combes, Françoise
name: Salomé, Philippe
name: Giacintucci, Simona
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The radio galaxy 1321+045 is a rare example of a young, compact steep spectrum source located in the center of a z=0.263 galaxy cluster. Using a combination of Chandra, VLBA, VLA, MERLIN and IRAM 30m observations, we investigate the conditions which have triggered this outburst. We find that the previously identified 5 kpc scale radio lobes are probably no longer powered by the AGN, which seems to have launched a new ~20 pc jet on a different axis, likely within the last few hundred years. We estimate the enthalpy of the lobes to be 8.48 [+6.04,-3.56] x10^57 erg, only sufficient to balance cooling in the surrounding 16 kpc for ~9 Myr. The cluster ICM properties are similar to those of rapidly cooling nearby clusters, with a low central entropy (8.6 [+2.2,-1.4] kev cm^2 within 8 kpc), short central cooling time (390 [+170,-150] Myr), and t_cool/t_ff and t_cool/t_eddy ratios indicative of thermal instability out to ~45 kpc. Despite previous detection of Halpha emission from the BCG, our IRAM 30m observations do not detect CO emission in either the (1-0) or (3-2) transitions. We place 3sigma limits on the molecular gas mass of M_mol <=7.7x10^9 Msol and <=5.6x10^9 Msol from the two lines respectively. We find indications of a recent minor cluster merger which has left a ~200 kpc tail of stripped gas in the ICM, and probably induced sloshing motions.
description: 18 pages, 9 figures, 4 tables, accepted for publication in ApJ, v2 updates references and corrects minor typographical errors identified at the proof stage
VP5-02: Magnetic printing characteristics of burst signals by using double magnet mater media
Creators: Takashi Komine
Publisher: name: IEEE
Year: 2023

Magnetic Recording (Virtual)
Magnetic printing technique is a strong candidate for servo track writing with extremely high speed and low cost. Recently, the double magnet master (DMM) was proposed for energy-assisted magnetic recording media with high coercivity[1]. The previous work showed that DMM printing can achieve superior characteristics for periodical line/space, dot, and checkerboard patterns[2, 3]. However, the servo-signals include servo-burst and address part with Gray code address which are non-periodic patterns. In this study, as the more realistic servo signals, the printing characteristics of burst signals can be demonstrate by utilizing micromagnetic simulation. Figure 1 shows the calculation model for master media and recording layer. The A/B burst is assumed in the simulation. The servo information typically includes track centering information and quadrature reference information providing position error signal (PES). The DMM media consists of two magnetic materials with different magnetic properties. One magnet is L10-FePt which has a coercivity higher than the coercivity of recording layer, while the other magnet is FeCo alloy with a lower coercivity. Two magnetic materials have no exchange interaction between these materials by insertion of non-magnetic separation layer. In order to calculate the printed magnetization distributions, the micromagnetic simulation has been carried out. Figure 2 shows the printed magnetization distributions onto the recording layer with the coercivity of about 10 kOe. The track width is 50 nm. During the printing process, the recording field difference generated by DMM media is about 15 kOe for burst pattern which is much larger than that of conventional master. As a result, the DMM can clearly print burst pattern and the clear PES is expected, especially even if in off-center region the clear magnetization distribution can be achieved. This study provides the feasibility of DMM printing for realistic servo writing technique.References: [1] T. Komine, IEEE Trans. Magn. 58, 3200105 (2021). [2] T. Komine, IEEE Trans. Magn. 58, 3200905 (2022). [3] T. Komine, AIP Advances 13, 025310 (2023).
Außenklimaställe für Schweine
Creators: name: Bockisch, Franz-Josef
name: Van Den Weghe, Herman
name: Fritzsche, Stephan
Publisher: name: LANDTECHNIK
Year: 1998

description: Geschlossene, wärmegedämmte und zwangsgelüftete Ställe haben sich in der Schweinehaltung aus Gründen der Arbeitswirtschaft, Produktionstechnik und Tierhygiene zum Standard entwickelt. ln vielen dieser herkömmlichen Ställe sind jedoch häufig unbefriedigende Umgebungsluftqualitäten für die Schweine vorzufinden. Die Stallklimaqualität hat aber einen sehr großen Einfluss auf die Tiergerechtheit von Haltungssystemen. So können unzulängliche Klimabedingungen auf Wohlbefinden, Verhalten, Gesundheit und Leistung der Tiere sehr negativ wirken. Dies war eine Motivation, sich im Rahmen des Bundeswettbewerbes Offene Stallsysteme für Schweine und Geflügel mit der Außenklimahaltung von Schweinen zu befassen.
description: LANDTECHNIK, Bd. 53 Nr. 6 (1998)
VP3-07: Structure and Magnetic Properties of Nanocrystalline SmCo5 and SmCo3Cu2 Prepared by High Pressure Torsion
Creators: Feiyang Wang
Pingzhan Si
Qiong Wu
Hongliang Ge
Jihoon Park and Chuljin Choi
Publisher: name: IEEE
Year: 2023

Hard Magnetic Materials (Virtual)
Sm-Co magnets have been widely used in high temperature environments for their high Curie temperature and extra-large magnetocrystalline anisotropy. The rare earth-transition metal-based bulk magnets are usually produced by using the powder-metallurgical sintering route in which the magnetic powders are aligned and then sintered. The grain size and aligned texture have substantial effect on the magnetic performance of a magnet. Recently, textured nanocrystalline SmCo5-Cu/Fe magnets were produced by high-pressure torsion (HPT) of powder blends consisting of SmCo5 and Cu or Fe powder [1, 2]. HPT is a severe plastic deformation technique where a sample is subjected to torsional shear straining under a high hydrostatic pressure [3]. HPT of magnetic materials has attracted increasing research interests for its high efficiency in producing ultra-fine grain size, which has substantial effect on the magnetic properties. Moreover, SmCo5 was found to be capable of forming amorphous shear bands to induce dislocation-free plastic deformation at large strains[4]. In this work, the effect of high pressure torsion on the structure and magnetic properties of SmCo5 and SmCo3Cu2 alloys prepared by induction melting are investigated systematically by using XRD, SEM and magnetic measurements. The grain size of SmCo5 and SmCo3Cu2 alloys has been refined significantly by HPT. The coercivity of both SmCo5 and SmCo3Cu2 increases with increasing rotation turns of HPT, as shown in Fig. 1. After ten tuns of rotation, the nanocrystalline SmCo5 and SmCo3Cu2 show a coercivity of 0.5 T and 1.64 T, respectively. A lamellar texture was observed in the SmCo3Cu2 after HPT, as shown in the inset of Fig. 1. This work demonstrates an alternative approach for the generation of textured nanocrystalline hard magnets.References: [1] F. Staab, E. Bruder, L. Schäfer, et al., Acta Materialia, Vol. 246, p.118709 (2023) [2] L. Weissitsch, M. Stückler, S. Wurster, Crystals, Vol. 10, p.1026 (2020) [3] K. Edalati, Z. Horita, Materials Science and Engineering: A, Vol. 652, p.325 (2016) [4] H. Luo, H. Sheng, H. Zhang, et al., Nature Communications, Vol. 10 , p. 3587 (2019)
VP12-15: Comparative Analysis of Graphene-copper and Copper Material used in Electric Motor Winding.
Creators: Shibo Xu
Deji Ma
Yulin Li
Yuxiao Li
Chenyang Zhao
and Ruilin Pei
Publisher: name: IEEE
Year: 2023

Sensors, High Frequency Devices, and Power Devices (Virtual)
As a kind of new material, Graphene-copper combines the high conductivity, high thermal conductivity and excellent mechanical properties of Graphene and copper. Compared with the pure copper wire widely used in traditional motors, Graphene copper wire has more excellent conductivity and thermal conductivity, and its resistivity has more prominent advantages than traditional pure copper wire under high-frequency alternating current. In order to explore the improvement of mechanical performance and electrical performance of Graphene copper wire and traditional copper wire, as well as their performance changing trends at different temperatures, a set of experimental equipment that can simultaneously apply stress field and temperature field is specially built in this paper. The first part of the article mainly introduces the special preparation method of Graphene copper, and the special method used to process this new material into motor wires. In the second part, the mechanical properties of the two materials are compared and analyzed. Through the test results, it can be found that compared with traditional pure copper materials, Graphene copper materials have lower tensile strength and yield strength, but it has better toughness, which is more conducive to processing in the subsequent material application process. Finally, the electrical performance test results of the two materials are compared. Under DC, the conductivity of Graphene copper wire is 30% better than that of copper wire. Under AC condition, with the increase of frequency, the conductivity of Graphene copper wire is significantly improved, and its performance advantages become more prominent. This feature makes Graphene copper wire more advantageous in application scenarios such as high-speed motors with higher operating frequencies.
The exact asymptotic of the collision time tail distribution for independent Brownian particles with different drifts
Creators: name: Puchała, Zbigniew
name: Rolski, Tomasz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J65

description: In this note we consider the time of the collision $τ$ for $n$ independent Brownian motions $X^1_t,...,X_t^n$ with drifts $a_1,...,a_n$, each starting from $x=(x_1,...,x_n)$, where $x_1t) = C h(x)t^{-α}e^{-γt}(1 + o(1))$ as $t\to\infty$ and identify $C,h(x),α,γ$ in terms of the drifts.
description: 20 pages
VP6-08: Two-dimensional Synchronous Motion Modulation MEMS Structure with High Modulation Efficiency
Creators: Qifeng Jiao
Zhenhu Jin and Jiamin Chen
Publisher: name: IEEE
Year: 2023

Sensors, High Frequency Devices, and Power Devices (Virtual)
In recent years, high-resolution magnetic field sensors (within the pT range) have been widely used in the fields of transportation, medical, and aviation1, Compared with traditional magnetic field sensors, magnetoresistance (MR) sensors have advantages such as small size, low power consumption and good linearity, making them highly competitive in the field of miniaturized high-performance magnetic field sensors. However, the MR sensor is greatly affected by 1/f noise interference, and the resolution of the sensor in the low frequency range is significantly lower than that in the high frequency range. Due to the fact that the frequency of the magnetic field that people are interested in is often less than 10 Hz, reducing the interference of 1/f noise is currently a scientific challenge that urgently needs to be solved in the application of MR sensors. In the past, some research groups proposed the introduction of MEMS modulation structures to reduce low-frequency 1/f noise2-5, but most devices have low modulation efficiency. In order to improve the modulation efficiency of MR-MEMS sensors and optimize the resolution of MR components in low-frequency magnetic fields, this paper proposes a two-dimensional synchronous motion modulation (TDSMM) method based on comb-driven resonators. The model of a MR sensor based on TDSMM structure is shown in Figure 1. The magnetic flux concentrator deposited above the transverse resonator amplifies the spatial magnetic field. The MR element is located at the end of the longitudinal resonator, and in order to achieve electrical isolation between the MR element and the longitudinal resonator, a layer of SiO2 is deposited between them. Finite element simulation was conducted on TDSMM model, and the result showed that the modulation efficiency of TDSMM was as high as 127% (the modulated magnetic field is shown in Figure 2), which is currently the highest value among MR-MEMS sensors. In the future, integrating TDSMM MEMS structure with MR components is expected to further improve the detectivity rate of MR components for low-frequency magnetic fields.References: [1] J. Lenz and S. Edelstein, IEEE Sensors Journal. 6, 3, 2006. [2] A. Guedes et al, IEEE Transactions on Magnetics. 44, 11 (2008). [3] A. Guedes et al, Journal of Applied Physics. 103, 07E924 (2008). [4] A. Guedes et al, IEEE Transactions on Magnetic. 48, 11 (2012). [5] Q. Du et al., IEEE Electron Device Letters. 40, 11 (2019).
Stellar Populations in the Outskirts of the Small Magellanic Cloud: No Outer Edge Yet
Creators: name: Noel, Noelia
name: Gallart, Carme
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of intermediate-age and old stars belonging to the SMC at 6.5 kpc from the SMC center in the southern direction. We show, from the analysis of three high quality 34\arcmin $\times$ 33\arcmin CMDs, that the age composition of the stellar population is similar at galactocentric distances of $\thicksim$4.7 kpc, $\thicksim$5.6 kpc, and $\thicksim$6.5 kpc. The surface brightness profile of the SMC follows an exponential law, with no evidence of truncation, all the way out to 6.5 kpc. These results, taken together, suggest that the SMC `disk' population is dominating over a possible old Milky Way-like stellar halo, and that the SMC may be significantly larger than previously thought.
description: Accepted for publication in ApJ Letters. High resolution figures are available at ftp://ftp.iac.es/out/noe/
Lüftungsverfahren für Großraumabteile zur Schweinemast
Creators: name: Büscher, Wolfgang
name: Heidenreich, Thomas
Publisher: name: LANDTECHNIK
Year: 1998

description: ln einer Großanlage für die Schweinemast wurden Vergleichsuntersuchungen von vier Lüftungsvarianten durchgeführt. Die Luftqualität und die tierischen Leistungen waren in allen Varianten nahezu gleich. Deutliche Unterschiede bestanden beim Elektroenergiekonsum. Einsatzdauer, Ventilatorzahl und -durchmesser sowie Strömungswiderstand sind die Ursachen für die Differenzen, die bei niedrigen Außentemperaturen am größten sind. Da zwischen den Varianten auch Unterschiede im Kapitalanspruch bestehen, ist die Ermittlung der gesamten Verfahrenskosten für einen Variantenvergleich notwendig. Es ergaben sich Verfahrenskosten von 10,70 bis 17,50 DM je Mastplatz und Jahr.
description: LANDTECHNIK, Bd. 53 Nr. 6 (1998)
A Gravitino Distance Conjecture
Creators: name: Castellano, Alberto
name: Font, Anamaría
name: Herraez, Alvaro
name: Ibáñez, Luis E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We conjecture that in a consistent supergravity theory with non-vanishing gravitino mass, the limit $m_{3/2}\rightarrow 0$ is at infinite distance. In particular one can write $M_{\mathrm{tower}} \sim m_{3/2}^δ$ so that as the gravitino mass goes to zero, a tower of KK states as well as emergent strings becomes tensionless. This conjecture may be motivated from the Weak Gravity Conjecture as applied to strings and membranes and implies in turn the AdS Distance Conjecture. We test this proposal in classical 4d type IIA orientifold vacua in which one obtains a range of values $\tfrac13 \le δ\le 1$. The parameter $δ$ is related to the scale decoupling exponent in AdS vacua and to the $α$ exponent in the Swampland Distance Conjecture for the type IIA complex structure. We present a general analysis of the gravitino mass in the limits of moduli space in terms of limiting Mixed Hodge Structures and study in some detail the case of two-moduli F-theory settings. Moreover, we obtain general lower bounds $δ\, \geq \, \frac{1}{3}, \, \frac{1}{4}$ for Calabi--Yau threefolds and fourfolds, respectively. The conjecture has important phenomenological implications. In particular we argue that low-energy supersymmetry of order 1 TeV is only obtained if there is a tower of KK states at an intermediate scale, of order $10^8$ GeV. One also has an upper bound for the Hubble constant upon inflation $H \lesssim m_{3/2}^δM^{(1-δ)}_{\text{P}}$.
description: v2: 60 pages, 3 figures. Minor changes and references added
Ammoniakemissionen nach der Flüssigmistausbringung
Creators: name: Reitz, Petra
name: Kutzbach, Heinz Dieter
Publisher: name: LANDTECHNIK
Year: 1998

description: Etwa die Hälfte der Ammoniakemissionen in Deutschland werden durch die Ausbringung von Flüssigmist verursacht. Negative Folgewirkungen wie Verlust an Stickstoffdünger und Umweltschäden sollen durch Verfahrensänderungen in der Flüssigmistkette vermindert werden. Mit Hilfe dreier Windtunnel wurde deshalb der Einfluss verschiedener Vorbehandlungen von Rinderflüssigmist auf die Ammoniakemissionen nach der Ausbringung untersucht. Durch Separierung des Flüssigmistes oder restriktive Proteinversorgung der Tiere konnten die Ammoniakemissionen effizient vermindert werden. Im Gegensatz hierzu führte die Ausbringung von aerob-thermophil stabilisiertem oder anaerob-fermentiertem Flüssigmist sogar zu erhöhten Emissionen. Die Beimischung von fünf verschiedenen Additiven zum Flüssigmist zeigte keinen Einfluss auf die Ammoniakemissionen.
description: LANDTECHNIK, Bd. 53 Nr. 6 (1998)
Additional file 7 of Identification of MFGE8 and KLK5/7 as mediators of breast tumorigenesis and resistance to COX-2 inhibition
Creators: name: Tian, Jun
name: Wang, Vivian
name: Wang, Ni
name: Baharak Khadang
name: Boudreault, Julien
name: Khldoun Bakdounes
name: Ali, Suhad
name: Lebrun, Jean-Jacques
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7:. Figure S7. a, mRNA expression levels of COX-2 and LAMC2 were assessed in MDA-MB-231 parental cells and two celecoxib-resistant variant cell lines by qPCR. b, COX-2 protein levels were measured in MDA-MB-231 parental cells and celecoxib-resistant cells by western blot.
VP3-15: Achieving optimal processing of grinding sludge in the manufacturing of Sm2Co17 magnets to contribute to a waste-free economy
Creators: Sina Khoshsima
Fevzi Kafexhiu
Tomaz Tomse
Kristina Zuzek and Saso Strum
Publisher: name: IEEE
Year: 2023

Hard Magnetic Materials II
Samarium-Cobalt (SmCo) magnets possess outstanding qualities, such as remarkable resistance to oxidation/corrosion, high thermal stability (Tc ≥ 747 °C), and exceptional magneto-crystalline anisotropy, making them valuable across various industries. However, the market share of SmCo magnets remains relatively low due to challenges associated with limited material resources, sustainability concerns, and environmental risks [1-3]. An important source of secondary resources comes from the waste generated during the machining and polishing of SmCo magnets. This waste contains impurities and a significant amount of carbon, posing difficulties for recycling and reusing. This research focuses on the recycling and reprocessing of SmCo waste derived from permanent magnets, employing an innovative separation method that combines pyrolysis and arc-melting to reduce the carbon content and facilitate its reuse in SmCo magnet production. Various techniques for characterization and thermal pretreatment are utilized to analyze and prepare the waste for further processing. The results demonstrate a successful reduction in carbon content within the waste (from 0.79 to 0.2 wt.%), paving the way for a more sustainable and environmentally friendly production cycle of SmCo magnets.References: 1-O. Gutfleisch, M.A. Willard, E. Brück, et al., Adv. Mater. 23 (2011) 2-J.-H. Yi, Rare Met., 33, 633–640 (2014) 3-N. Swain, S. Mishra, J. Clean. Prod. 220 (2019)
Ab initio Study of Graphene on SiC
Creators: name: Mattausch, Alexander
name: Pankratov, Oleg
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Employing density-functional calculations we study single and double graphene layers on Si- and C-terminated 1x1-6H-SiC surfaces. We show that, in contrast to earlier assumptions, the first carbon layer is covalently bonded to the substrate, and cannot be responsible for the graphene-type electronic spectrum observed experimentally. The characteristic spectrum of free-standing graphene appears with the second carbon layer, which exhibits a weak van der Waals bonding to the underlying structure. For Si-terminated substrate, the interface is metallic, whereas on C-face it is semiconducting or semimetallic for single or double graphene coverage, respectively.
description: 4 pages, 3 figures, 1 table; Submitted to Physical Review Letters on 01/08/07
Mistmatratzen in eingestreuten Haltungssystemen
Creators: name: Deininger, Andreas
name: Krause, Rüdiger
name: Tamm, Marco
name: Sonnenberg, Hans
Publisher: name: LANDTECHNIK
Year: 1998

description: Obwohl eingestreute Haltungssysteme bereits Gegenstand zahlreicher Untersuchungen waren, ist über die Tragfähigkeit der Einstreumatratze in Tiefstreusystemen wenig bekannt. Mit Hilfe einer eigens entwickelten Messtechnik wurde der Einfluss der Aufbereitung des Einstreumaterials und der Mistlagerdauer im Stall auf die Stabilität der Einstreumatratze untersucht. Matratzen aus gehäckseltem oder beim Bergevorgang mechanisch stark beanspruchtem Stroh hatten dabei eine geringere Tragfähigkeit als solche aus langem oder lang geschnittenem Stroh. Ferner nahm beim Anwachsen des Miststapels die Tragfähigkeit infolge der mikrobiellen Zersetzung der unteren Einstreuschichten ab.
description: LANDTECHNIK, Bd. 53 Nr. 6 (1998)
L'impact de l'innovation digitale sur la compétitivité des entreprises : Cas des PME du Maroc
Creators: name: Taoufiq ESSILI
name: Rania EL OUIDANI
name: Mohamed SABRI
name: Abdelkahar ZAHID
Publisher: name: Zenodo
Year: 2023

description: Les entreprises sont incitées à passer d'un état d'utilisation de mécanismes pour la plupart archaïques à un état digital plus compétitif et avantageux en raison des avancées technologiques qui ont bouleversé les modèles commerciaux à travers les changements et les opportunités induits par la diffusion du numérique. Pour améliorer leurs performances, les entreprises adoptent de plus en plus de nouvelles technologies digitales en conséquence de l'innovation digitale. Par ailleurs, pour renforcer leur position sur le marché, accroître leur efficacité, améliorer la qualité des produits et développer des employés clés, les entreprises peuvent utiliser cet outil. C’est dans ce contexte que s’articule le présent article, en tentant d’apporter une contribution en la matière, à travers l’étude de l’impact de l’innovation digitale sur la compétitivité des PME du Maroc. Les données sont collectées à l’aide d’un questionnaire administré à un échantillon de 300 PME de différentes régions marocaines. Les résultats de l’analyse par les équations structurelles ont montré que, d’un côté, l’innovation digitale impacte positivement la performance organisationnelle des PME au Maroc par l’intermédiaire de la transformation digitale, et de l’autre côté, elle favorise la compétitivité.
Doping quantum spin liquids on the Kagome lattice
Creators: name: Peng, Cheng
name: Jiang, Yi-Fan
name: Sheng, Dong-Ning
name: Jiang, Hong-Chen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We review recent density-matrix renormalization group (DMRG) studies of lightly doped quantum spin liquids (QSLs) on the kagome lattice. While a number of distinct conducting phases, including high-temperature superconductivity, have been theoretically anticipated we find instead a tendency toward fractionalized insulating charge-density-wave (CDW) states. In agreement with earlier work (Jiang, Devereaux, and Kivelson, Phys. Rev. Lett. ${\bf 119}$, 067002 (2017)), results for the $t$-$J$ model reveal that starting from a fully gapped QSL, light doping leads to CDW long-range order with a pattern that depends on lattice geometry and doping concentration such that there is one doped-hole per CDW unit cell, while the spin-spin correlations remain short-ranged. Alternatively, this state can be viewed as a stripe crystal or Wigner crystal of spinless holons, rather than doped holes. From here, by studying generalized versions of the $t$-$J$ model, we extend these results to light doping of other types of QSLs, including critical and chiral QSLs. Our results suggest that doping these QSLs also leads to insulating states with long-range CDW orders. While the superconducting correlations are short-ranged, they can be significantly enhanced by second-neighbor electron hopping. The relevance of our numerical results to Kagome materials is also discussed.
description: 9 pages, 9 figures
Auf dem Weg zur Selbstanerkennung : Die Bundesrepublik Deutschland in den 1960er Jahren
Creators: name: Schönhoven, Klaus
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Auf dem Weg zur Selbstanerkennung: Die Bundesrepublik Deutschland in den 1960er Jahren" of MTS 22 (1999).
description: Moving the Social, Vol 22 (1999): Forschungen und Forschungsberichte
Güllebehandlung mit Milchsäure
Creators: name: Berg, Werner
name: Hörnig, Günter
name: Türk, Meno
Publisher: name: LANDTECHNIK
Year: 1998

description: Integrierte Pflanzenbauverfahren in Verbindung mit umweltverträglicher Tierhaltung sind notwendig, um die Landwirtschaft nachhaltig zu betreiben. Ein Beitrag zu einer umweltverträglichen Tierhaltung ist die Verminderung der von ihr ausgehenden Emissionen durch das Ansäuern der Exkremente mit Milchsäure. Zum Ansäuern von Gülle mit Milchsäure liegen Ergebnisse in den Bereichen Tierstall, Güllelagerung und -ausbringung sowie zu den pflanzenbauliche Auswirkungen vor.
description: LANDTECHNIK, Bd. 53 Nr. 6 (1998)
Theorie und Praxis des Arbeitsrechts in Deutschland und England (1850-1930): Annäherung an einen Vergleich verschiedener Rechtskulturen
Creators: name: Steinmetz, Willibald
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Theorie und Praxis des Arbeitsrechts in Deutschland und England (1850-1930): Annäherung an einen Vergleich verschiedener Rechtskulturen" of MTS 22 (1999).
description: Moving the Social, Vol 22 (1999): Forschungen und Forschungsberichte
Schadgassensoren
Creators: name: Grotz, Walter
name: Gronauer, Andreas
Publisher: name: LANDTECHNIK
Year: 1998

description: Die Konzentration von Schadgasen in der Stallluft ist neben der Temperatur die zweite wichtige und aufgrund gesetzlicher Rahmenbedingungen in Zukunft an Bedeutung gewinnende Regelgröße der Lüftungsrate in Ställen. Im Rahmen des Entwicklungsvorhabens „Auswirkungen einer schadgasgeregelten Lüftungsanlage auf die Emissionsraten klima- und umweltrelevanter Gase aus Stallungen“ werden in Labor und Praxistests Gassensoren hinsichtlich ihrer Eignung für den Langzeiteinsatz in schadgasgeregelten Lüftungsanlagen untersucht. Dieser Beitrag soll eine Einführung in die Problemstellung, Kriterien der Sensorauswahl und das Vorgehen bei der Sensorüberprüfung vorstellen.
description: LANDTECHNIK, Bd. 53 Nr. 6 (1998)
BD-07: Magnetic droplet soliton pairs
Creators: Martina Ahlberg
Sheng Jiang
Sunjae Chung
Andreas Frisk
Q. Tuan Le
Hamid Mazraati
Afshin Houshang
Olle Heinonen
Johan Åkerman
Publisher: name: IEEE
Year: 2023

Domain Wall, Vortex, and Skyrmion Dynamics and Devices I
Magnetic droplets are dissipative solitons found in perpendicular magnetized materials where a spin current counteracts the inherent damping. A typical device for droplet studies is the spin torque nano-oscillator, where a thick reference layer (RL) polarizes the applied current, which exert a torque on the free layer (FL) leading to the nucleation of a soliton. Droplets in these devices have been the subject of a large number of experimental and theoretical reports [1, 2]. However, the research has only been focused on magnetic excitations in the free layer. Here, we show that droplets form also in the reference layer at sufficient high currents. The experimental signature of droplet pairs (DP) is a clear decline in the resistance accompanied with strong low-frequency noise (Fig. 1). We use the measured data to construct a phase diagram of the magnetic states as a function of applied field and current. Furthermore, we use micromagnetic simulations to get more detailed insight in the droplet pair state. Figure 2 presents an example of the results. The simulations reveal that the dynamics of coexisting droplets can be described as periodic, pseudo-periodic or chaotic. The coexisting droplets are strongly interacting and constitute a platform for studies of non-linear soliton pair dynamics.References: [1] Macià F., and Kent A. D. (2020). Magnetic droplet solitons. J. Appl. Phys., 128, 100901 [2] Sulymenko O. R., Prokopenko O. V., Tyberkevych V. S., Slavin A. N., and Serga A. A. (2018). Bullets and droplets: Two-dimensional spin wave solitons in modern magnonics (Review Article), Low Temp. Phys. 44, 602
Die Sozialdemokratie in der Slowakei: Ein Forschungsbericht
Creators: name: Sikora, Stanislav
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Die Sozialdemokratie in der Slowakei: Ein Forschungsbericht" of MTS 23 (2000).
description: Moving the Social, Vol 23 (2000): Forschungen und Forschungsberichte
Instrumentarien zur Planung im ländlichen Raum
Creators: name: Lütkemeier, Harald
Publisher: name: LANDTECHNIK
Year: 1998

description: Zur Gewährleistung einer geordneten städtebaulichen Entwicklung in den Gemeinden bieten sich planrechtliche Instrumentarien des allgemeinen Städtebaurechts an. Die Ziele der Dorferneuerung bedürfen eines vorbereitenden und flankierenden, planerisch verbindlichen Rahmens. Entwicklung hat im weitesten Sinne immer mit Nutzungen, dem Bauen und der Inanspruchnahme natürlicher Ressourcen zu tun.
description: LANDTECHNIK, Bd. 53 Nr. 5 (1998)
Additional file 8 of Identification of MFGE8 and KLK5/7 as mediators of breast tumorigenesis and resistance to COX-2 inhibition
Creators: name: Tian, Jun
name: Wang, Vivian
name: Wang, Ni
name: Baharak Khadang
name: Boudreault, Julien
name: Khldoun Bakdounes
name: Ali, Suhad
name: Lebrun, Jean-Jacques
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8. CRISPR/Cas9 sgRNA sequences targeting 10 COX-2 associated genes.
Capacity of a Multiple-Antenna Fading Channel with a Quantized Precoding Matrix
Creators: name: Santipach, Wiroonsak
name: Honig, Michael L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Given a multiple-input multiple-output (MIMO) channel, feedback from the receiver can be used to specify a transmit precoding matrix, which selectively activates the strongest channel modes. Here we analyze the performance of Random Vector Quantization (RVQ), in which the precoding matrix is selected from a random codebook containing independent, isotropically distributed entries. We assume that channel elements are i.i.d. and known to the receiver, which relays the optimal (rate-maximizing) precoder codebook index to the transmitter using B bits. We first derive the large system capacity of beamforming (rank-one precoding matrix) as a function of B, where large system refers to the limit as B and the number of transmit and receive antennas all go to infinity with fixed ratios. With beamforming RVQ is asymptotically optimal, i.e., no other quantization scheme can achieve a larger asymptotic rate. The performance of RVQ is also compared with that of a simpler reduced-rank scalar quantization scheme in which the beamformer is constrained to lie in a random subspace. We subsequently consider a precoding matrix with arbitrary rank, and approximate the asymptotic RVQ performance with optimal and linear receivers (matched filter and Minimum Mean Squared Error (MMSE)). Numerical examples show that these approximations accurately predict the performance of finite-size systems of interest. Given a target spectral efficiency, numerical examples show that the amount of feedback required by the linear MMSE receiver is only slightly more than that required by the optimal receiver, whereas the matched filter can require significantly more feedback.
Der Tschechien- und Slowakei-Bestand der vormaligen Bibliothek des Instituts zur Erforschung der europäischen Arbeiterbewegung
Creators: name: Owetschkin, Dimitrij
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Der Tschechien- und Slowakei-Bestand der vormaligen Bibliothek des Instituts zur Erforschung der europäischen Arbeiterbewegung" of MTS 23 (2000).
description: Moving the Social, Vol 23 (2000): Forschungen und Forschungsberichte