cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Regulation and Function of TMEM16F in Renal Podocytes
Creators: name: Schenk, Laura K.
name: Ousingsawat, Jiraporn
name: Skryabin, Boris V.
name: Schreiber, Rainer
name: Pavenstädt, Hermann
name: Kunzelmann, Karl
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: TMEM16F; anoctamin 6; kidney; renal ion channels; chloride channel
subject: 540 Chemie

description: The Ca2+-activated phospholipid scramblase and ion channel TMEM16F is expressed in podocytes of renal glomeruli. Podocytes are specialized cells that form interdigitating foot processes as an essential component of the glomerular filter. These cells, which participate in generation of the primary urine, are often affected during primary glomerular diseases, such as glomerulonephritis and secondary hypertensive or diabetic nephropathy, which always leads to proteinuria. Because the function of podocytes is known to be controlled by intracellular Ca2+ signaling, it is important to know about the role of Ca2+-activated TMEM16F in these cells. To that end, we generated an inducible TMEM16F knockdown in the podocyte cell line AB8, and produced a conditional mouse model with knockout of TMEM16F in podocytes and renal epithelial cells of the nephron. We found that knockdown of TMEM16F did not produce proteinuria or any obvious phenotypic changes. Knockdown of TMEM16F affected cell death of tubular epithelial cells but not of glomerular podocytes when analyzed in TUNEL assays. Surprisingly, and in contrast to other cell types, TMEM16F did not control intracellular Ca2+ signaling and was not responsible for Ca2+-activated whole cell currents in podocytes. TMEM16F levels in podocytes were enhanced after inhibition of the endolysosomal pathway and after treatment with angiotensin II. Renal knockout of TMEM16F did not compromise renal morphology and serum electrolytes. Taken together, in contrast to other cell types, such as platelets, bone cells, and immune cells, TMEM16F shows little effect on basal properties of podocytes and does not appear to be essential for renal function.
Sonnenfleckenzeichnung Nr. 27908.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.02.1989, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1989

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Sonnenfleckenzeichnung Nr. 27886.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.01.1989, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1989

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Sonnenfleckenzeichnung Nr. 27920.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.03.1989, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1989

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
T-duality and hints of generalized geometry in string $α'$ corrections
Creators: name: David, Marina
name: Liu, James
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the structure of higher-derivative string corrections under a cosmological reduction and make connection to generalized geometry and T-duality. We observe that, while the curvature $R^μ_{νρσ}(Ω_+)$ of the generalized connection with torsion, $Ω_+=Ω+\frac{1}{2}H$, is an important component in forming T-duality invariants, it is necessarily incomplete by itself. We revisit the tree-level $α'R^2$ corrections to the bosonic and heterotic string in the language of generalized geometry and explicitly demonstrate that additional $H$-field couplings are needed to restore T-duality invariance. We also comment on the structure of the T-duality completion of tree-level $α'^3R^4$ in the type II string.
description: 32 pages
Real-Time Imaging Reveals Augmentation of Glutamate-Induced Ca2+ Transients by the NO-cGMP Pathway in Cerebellar Granule Neurons
Creators: name: Paolillo, Michael
name: Peters, Stefanie
name: Schramm, Andrea
name: Schlossmann, Jens
name: Feil, Robert
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: cyclic GMP; calcium; nitric oxide; guanylyl cyclase; cerebellar granule cells; protein kinase; PKG; FRET imaging; transgenic mice
subject: 540 Chemie

description: Dysfunctions of NO-cGMP signaling have been implicated in various neurological disorders. We have studied the potential crosstalk of cGMP and Ca2+ signaling in cerebellar granule neurons (CGNs) by simultaneous real-time imaging of these second messengers in living cells. The NO donor DEA/NO evoked cGMP signals in the granule cell layer of acute cerebellar slices from transgenic mice expressing a cGMP sensor protein. cGMP and Ca2+ dynamics were visualized in individual CGNs in primary cultures prepared from 7-day-old cGMP sensor mice. DEA/NO increased the intracellular cGMP concentration and augmented glutamate-induced Ca2+ transients. These effects of DEA/NO were absent in CGNs isolated from knockout mice lacking NO-sensitive guanylyl cyclase. Furthermore, application of the cGMP analogues 8-Br-cGMP and 8-pCPT-cGMP, which activate cGMP effector proteins such as cyclic nucleotide-gated cation channels and cGMP-dependent protein kinases (cGKs), also potentiated glutamate-induced Ca2+ transients. Western blot analysis failed to detect cGK type I or II in our primary CGNs. The addition of phosphodiesterase (PDE) inhibitors during cGMP imaging showed that CGNs degrade cGMP mainly via Zaprinast-sensitive PDEs, most likely PDE5 and/or PDE10, but not via PDE1, 2, or 3. In sum, these data delineate a cGK-independent NO-cGMP signaling cascade that increases glutamate-induced Ca2+ signaling in CGNs. This cGMP–Ca2+ crosstalk likely affects neurotransmitter-stimulated functions of CGNs.
Learning Transferable Parameters for Unsupervised Domain Adaptation
Creators: name: Han, Zhongyi
name: Sun, Haoliang
name: Yin, Yilong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Unsupervised domain adaptation (UDA) enables a learning machine to adapt from a labeled source domain to an unlabeled domain under the distribution shift. Thanks to the strong representation ability of deep neural networks, recent remarkable achievements in UDA resort to learning domain-invariant features. Intuitively, the hope is that a good feature representation, together with the hypothesis learned from the source domain, can generalize well to the target domain. However, the learning processes of domain-invariant features and source hypothesis inevitably involve domain-specific information that would degrade the generalizability of UDA models on the target domain. In this paper, motivated by the lottery ticket hypothesis that only partial parameters are essential for generalization, we find that only partial parameters are essential for learning domain-invariant information and generalizing well in UDA. Such parameters are termed transferable parameters. In contrast, the other parameters tend to fit domain-specific details and often fail to generalize, which we term as untransferable parameters. Driven by this insight, we propose Transferable Parameter Learning (TransPar) to reduce the side effect brought by domain-specific information in the learning process and thus enhance the memorization of domain-invariant information. Specifically, according to the distribution discrepancy degree, we divide all parameters into transferable and untransferable ones in each training iteration. We then perform separate updates rules for the two types of parameters. Extensive experiments on image classification and regression tasks (keypoint detection) show that TransPar outperforms prior arts by non-trivial margins. Moreover, experiments demonstrate that TransPar can be integrated into the most popular deep UDA networks and be easily extended to handle any data distribution shift scenarios.
Ammoniates of Zintl phases: Similarities and differences of binary phases A4E4 and their corresponding solvates
Creators: name: Lorenz, Corinna
name: Gärtner, Stefanie
name: Korber, Nikolaus
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: Zintl compounds; liquid ammonia; crystal structure
subject: 540 Chemie

description: The combination of electropositive alkali metals A (A = Na-Cs) and group 14 elements E (E = Si-Pb) in a stoichiometric ratio of 1:1 in solid state reactions results in the formation of polyanionic salts, which belong to a class of intermetallics for which the term Zintl compounds is used. Crystal structure analysis of these intermetallic phases proved the presence of tetrahedral tetrelide tetraanions [E4]4− precast in solid state, and coulombic interactions account for the formation of a dense, three-dimensional cation-anion network. In addition, it has been shown that [E4]4− polyanions are also present in solutions of liquid ammonia prepared via different synthetic routes. From these solutions crystallize ammoniates of the alkali metal tetrahedranides, which contain ammonia molecules of crystallization, and which can be characterized by X-ray crystallography despite their low thermal stability. The question to be answered is about the structural relations between the analogous compounds in solid state vs. solvate structures, which all include the tetrahedral [E4]4− anions. We here investigate the similarities and differences regarding the coordination spheres of these anions and the resulting cation-anion network. The reported solvates Na4Sn4·13NH3, Rb4Sn4·2NH3, Cs4Sn4·2NH3, Rb4Pb4·2NH3 as well as the up to now unpublished crystal structures of the new compounds Cs4Si4·7NH3, Cs4Ge4·9NH3, [Li(NH3)4]4Sn4·4NH3, Na4Sn4·11.5NH3 and Cs4Pb4·5NH3 are considered for comparisons. Additionally, the influence of the presence of another anion on the overall crystal structure is discussed by using the example of a hydroxide co-crystal which was observed in the new compound K4.5Sn4(OH)0.5∙1.75 NH3.
Phase II Assessment of Total Mercury Concentrations in Fishes from Rivers, Lakes and Reservoirs of New Jersey
Creators: name: No Name Supplied
Publisher: name: New Jersey Department of Environmental Protection, Office of Science and Research
Year: 1999

description: In 1996-97, ANSP (Academy of Natural Sciences of Philadelphia) conducted a study of mercury levels in freshwater game fish in New Jersey. A total of 258 fish samples from 30 water bodies were analyzed.  The results of this study are consistent with ANSP 1992-93 mercury in fish research in New Jersey. The highest mercury concentrations were in fish from the Pine Barrens region and marginal to the Pine Barrens. Mercury levels varied greatly in fish from industrial areas, northern and northwestern waterways and cold-water streams. Mercury concentrations typically increased with species trophic level, but among-species variation within each group was observed.  Also reported herein is a review of the entire five-study database (1100 samples) showing that mercury is ubiquitous in New Jersey freshwater systems.
Generalizability of reservoir computing for flux-driven two-dimensional convection
Creators: name: Heyder, Florian
name: Mellado, Juan Pedro
name: Schumacher, Jörg
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We explore the generalization properties of an echo state network applied as a reduced dynamical model to predict flux-driven two-dimensional turbulent convection. To this end, we consider a convection domain at fixed height with a variable ratio of buoyancy fluxes at the top and bottom boundaries, which break the top-down symmetry in comparison to the standard Rayleigh-Bénard case thus leading to highly asymmetric mean and fluctuation profiles across the layer. Our direct numerical simulation model describes a convective boundary layer in a simple way. The data are used to train and test a recurrent neural network in the form of an echo state network. The input to the echo state networks is obtained in two different ways, either by a proper orthogonal decomposition or by a convolutional autoencoder. In both cases, the echo state network reproduces the turbulence dynamics and the statistical properties of the buoyancy flux, and is able to model unseen data records with different flux ratios.
Urea Activation by an External Brønsted Acid: Breaking Self-Association and Tuning Catalytic Performance
Creators: name: Sonsona, Isaac G.
name: Marqués-López, Eugenia
name: Häring, Marleen
name: Díaz Díaz, David
name: Herrera, Raquel P.
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: Brønsted acids; Friedel-Crafts; organocatalysis; self-association; synergy; urea
subject: 540 Chemie

description: In this work, we hypothesize that Brønsted acids can activate urea-based catalysts by diminishing its self-assembly tendency. As a proof of concept, we used the asymmetric Friedel–Crafts alkylation of indoles with nitroalkenes as a benchmark reaction. The resulting 3-substituted indole derivatives were obtained with better results due to cooperative effects of the chiral urea and a Brønsted acid additive. Such synergy has been rationalized in terms of disassembly of the supramolecular catalyst aggregates, affording a more acidic and rigid catalytic complex.
On tempered fractional calculus with respect to functions and the associated fractional differential equations
Creators: name: Mali, Ashwini D.
name: Kucche, Kishor D.
name: Fernandez, Arran
name: Fahad, Hafiz Muhammad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The prime aim of the present paper is to continue developing the theory of tempered fractional integrals and derivatives of a function with respect to another function. This theory combines the tempered fractional calculus with the $Ψ$-fractional calculus, both of which have found applications in topics including continuous time random walks. After studying the basic theory of the $Ψ$-tempered operators, we prove mean value theorems and Taylor's theorems for both Riemann--Liouville type and Caputo type cases of these operators. Furthermore, we study some nonlinear fractional differential equations involving $Ψ$-tempered derivatives, proving existence-uniqueness theorems by using the Banach contraction principle, and proving stability results by using Grönwall type inequalities.
description: 34
General formalism for the stability of thin-shell wormholes in 2+1 dimensions
Creators: name: Bejarano, Cecilia
name: Eiroa, Ernesto F.
name: Simeone, Claudio
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this article we theoretically construct circular thin-shell wormholes in a 2+1 dimensional spacetime. The construction is symmetric with respect to the throat. We present a general formalism for the study of the mechanical stability under perturbations preserving the circular symmetry of the configurations, adopting a linearized equation of state for the exotic matter at the throat. We apply the formalism to several examples.
description: 14 pages, 7 figures; v2: improved version, new references added
Sonnenfleckenzeichnung Nr. 28036.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.09.1989, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1989

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
On the minimum size of subset and subsequence sums in integers
Creators: name: Bhanja, Jagannath
name: Pandey, Ram Krishna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11P70, 11B75, 11B13

description: Let $\mathcal{A}$ be a sequence of $rk$ terms which is made up of $k$ distinct integers each appearing exactly $r$ times in $\mathcal{A}$. The sum of all terms of a subsequence of $\mathcal{A}$ is called a subsequence sum of $\mathcal{A}$. For a nonnegative integer $α\leq rk$, let $Σ_α (\mathcal{A})$ be the set of all subsequence sums of $\mathcal{A}$ that correspond to the subsequences of length $α$ or more. When $r=1$, we call the subsequence sums as subset sums and we write $Σ_α (A)$ for $Σ_α (\mathcal{A})$. In this article, using some simple combinatorial arguments, we establish optimal lower bounds for the size of $Σ_α (A)$ and $Σ_α (\mathcal{A})$. As special cases, we also obtain some already known results in this study.
description: Corrected version
Sonnenfleckenzeichnung Nr. 27893.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.01.1989, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1989

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Sonnenfleckenzeichnung Nr. 27916.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 14.03.1989, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1989

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
A two-fold study of equine weaning practices and behaviours displayed following mare removal
Creators: name: McMeeking, Catherine
Publisher: name: University of Plymouth
Year: 2019
Subjects: subject: Equine
subject: Horse
subject: Weaning
subject: Behaviour
subject: Welfare
subject: Stress
subject: Animal Behaviour
subject: ResM

description: The behavioural effects on the foal and dam during weaning in horses are well documented and it is commonly agreed that both are likely to suffer from stress at this time. Many different weaning methods are employed worldwide, with no indication of the least stress inducing. This study has two aims. First, to document frequency of weaning method, type of breeder, foal age at the time of mare removal and reason for use of weaning method. Second, to compare behaviours following abrupt and gradual weaning methods. The first aim was addressed by a questionnaire distributed globally via social media and equine academic societies’ distribution lists. All (100%) of the 440 responses were usable. Data were collated and statistically analysed. Gradual weaning was the most common (40.5%) method, and abrupt method second most common (30.9%). Typically, larger studs which breed more foals per annum, tend to wean earlier and use abrupt methods, smaller studs, breeding few foals per annum, tend to wean later using gradual or ‘other’ methods of weaning. The second aim was addressed via behavioural observation of two groups of seven foals, one group subjected to gradual weaning and the second to abrupt weaning. Foals displayed increased behaviour frequency post-mare removal versus pre-mare removal. Locomotary behaviours increased following mare removal and eating and lying down behaviours decreased. Foals in the abrupt group displayed significantly more behaviours, post-mare removal than the gradual group. These results indicate that industry practice reflects a wide range of weaning 5 methods utilised for many reasons. Additionally, foals were more stressed following mare removal and use of gradual methods, may improve welfare.
Compared to Australian Cultivars, European Summer Wheat (Triticum aestivum) Overreacts When Moderate Heat Stress Is Applied at the Pollen Development Stage
Creators: name: Begcy, Kevin
name: Weigert, Anna
name: Egesa, Andrew Ogolla
name: Dresselhaus, Thomas
Publisher: name: Universität Regensburg
Year: 2018
Subjects: subject: wheat; heat stress; heat shock factors (HSF); pollen mitosis; pollen viability; gas exchange parameters; photosynthesis; transpiration
subject: 570 Biowissenschaften, Biologie

description: Heat stress frequently imposes a strong negative impact on vegetative and reproductive development of plants leading to severe yield losses. Wheat, a major temperate crop, is more prone to suffer from increased temperatures than most other major crops. With heat waves becoming more intense and frequent, as a consequence of global warming, a decrease in wheat yield is highly expected. Here, we examined the impact of a short-term (48 h) heat stress on wheat imposed during reproduction at the pollen mitosis stage both, at the physiological and molecular level. We analyzed two sets of summer wheat germplasms from Australia (Kukri, Drysdale, Gladius, and RAC875) and Europe (Epos, Cornetto, Granny, and Chamsin). Heat stress strongly affected gas exchange parameters leading to reduced photosynthetic and transpiration rates in the European cultivars. These effects were less pronounced in Australian cultivars. Pollen viability was also reduced in all European cultivars. At the transcriptional level, the largest group of heat shock factor genes (type A HSFs), which trigger molecular responses as a result of environmental stimuli, showed small variations in gene expression levels in Australian wheat cultivars. In contrast, HSFs in European cultivars, including Epos and Granny, were strongly downregulated and partly even silenced, while the high-yielding variety Chamsin displayed a strong upregulation of type A HSFs. In conclusion, Australian cultivars are well adapted to moderate heat stress compared to European summer wheat. The latter strongly react after heat stress application by downregulating photosynthesis and transpiration rates as well as differentially regulating HSFs gene expression pattern.
Sonnenfleckenzeichnung Nr. 28042.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.09.1989, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1989

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Multiple-distribution-function lattice Boltzmann method for convection-diffusion-system based incompressible Navier-Stokes equations
Creators: name: Chai, Zhenhua
name: Shi, Baochang
name: Zhan, Chengjie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper, a multiple-distribution-function lattice Boltzmann method (MDF-LBM) with multiple-relaxation-time model is proposed for incompressible Navier-Stokes equations (NSEs) which are considered as the coupled convection-diffusion equations (CDEs). Through direct Taylor expansion analysis, we show that the Navier-Stokes equations can be recovered correctly from the present MDF-LBM, and additionally, it is also found that the velocity and pressure can be directly computed through the zero and first-order moments of distribution function. Then in the framework of present MDF-LBM, we develop a locally computational scheme for the velocity gradient where the first-order moment of the non-equilibrium distribution is used, this scheme is also extended to calculate the velocity divergence, strain rate tensor, shear stress and vorticity. Finally, we also conduct some simulations to test the MDF-LBM, and find that the numerical results not only agree with some available analytical and numerical solutions, but also have a second-order convergence rate in space.
description: 32 pages, 18 figures
Multiply connected wandering domains of meromorphic functions: internal dynamics and connectivity
Creators: name: Ferreira, Gustavo Rodrigues
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We discuss how the nine-way classification scheme devised by Benini et al. for the dynamics of simply connected wandering domains of entire functions, based on the long-term behaviour of the hyperbolic distance between iterates of pairs of points and also the distance between orbits and the domains' boundaries, carries over to the general case of multiply connected wandering domains of meromorphic functions. Most strikingly, we see that not all pairs of points in such a wandering domain behave in the same way relative to the hyperbolic distance, and that the connectivity of the wandering domain greatly influences its possible internal dynamics. After illustrating our results with the well-studied case of Baker wandering domains, we further illustrate the diversity of multiply connected wandering domains in general by constructing a meromorphic function with a wandering domain without eventual connectivity. Finally, we show that an analogue of the "convergence to the boundary" classification of Benini et al. does hold in general, and add new information about how this convergence takes place.
description: 21 pages, 4 figures
Chiral vortical catalysis
Creators: name: Jiang, Yin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Gluon interaction introduces remarkable corrections to the magnetic polarization effects on the chiral fermions, which is known as the inverse magnetic catalysis. It is a natural speculation that the vorticity, which has many similar properties as magnetic field, would bring non-negligible contribution to the chiral rotational suppression. Using the intuitive semi-classical background field method we studied the rotation dependence of the effective strong interaction coupling. Contrary to the magnetic field case the rotation increases the effective coupling which leads to slowing down the condensate melting procedure with temperature. This could be named as the chiral vortical catalysis or inverse rotation suppression. Imposing such dependence to the coupling in the NJL model, we numerically checked this analysis qualitatively. The pseudo critical temperature is shown to rise with the rotation and approach saturation eventually which may be induced by the model cutoff.
description: 6 pages, 4 figures
Discretization of parameter identification in PDEs using Neural Networks
Creators: name: Kaltenbacher, Barbara
name: Nguyen, Tram Thi Ngoc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 65M32, 65J22, 35R30

description: We consider the ill-posed inverse problem of identifying a nonlinearity in a time-dependent PDE model. The nonlinearity is approximated by a neural network, and needs to be determined alongside other unknown physical parameters and the unknown state. Hence, it is not possible to construct input-output data pairs to perform a supervised training process. Proposing an all-at-once approach, we bypass the need for training data and recover all the unknowns simultaneously. In the general case, the approximation via a neural network can be realized as a discretization scheme, and the training with noisy data can be viewed as an ill-posed inverse problem. Therefore, we study discretization of regularization in terms of Tikhonov and projected Landweber methods for discretization of inverse problems, and prove convergence when the discretization error (network approximation error) and the noise level tend to zero.
Structure-reversibility of a two dimensional reflecting random walk and its application to queueing network
Creators: name: Kobayashi, Masahiro
name: Miyazawa, Masakiyo
name: Shimizu, Hiroshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider a two dimensional reflecting random walk on the nonnegative integer quadrant. It is assumed that this reflecting random walk has skip free transitions. We are concerned with its time reversed process assuming that the stationary distribution exists. In general, the time reversed process may not be a reflecting random walk. In this paper, we derive necessary and sufficient conditions for the time reversed process also to be a reflecting random walk. These conditions are different from but closely related to the product form of the stationary distribution.
description: 34pages
The complex architecture of primes and natural numbers
Creators: name: Garcia-Perez, Guillermo
name: Serrano, M. Angeles
name: Boguna, Marian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Natural numbers can be divided in two non-overlapping infinite sets, primes and composites, with composites factorizing into primes. Despite their apparent simplicity, the elucidation of the architecture of natural numbers with primes as building blocks remains elusive. Here, we propose a new approach to decoding the architecture of natural numbers based on complex networks and stochastic processes theory. We introduce a parameter-free non-Markovian dynamical model that naturally generates random primes and their relation with composite numbers with remarkable accuracy. Our model satisfies the prime number theorem as an emerging property and a refined version of Cramér's conjecture about the statistics of gaps between consecutive primes that seems closer to reality than the original Cramér's version. Regarding composites, the model helps us to derive the prime factors counting function, giving the probability of distinct prime factors for any integer. Probabilistic models like ours can help to get deeper insights about primes and the complex architecture of natural numbers.
Concept Trees: Building Dynamic Concepts from Semi-Structured Data using Nature-Inspired Methods
Creators: name: Greer, Kieran
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: This paper describes a method for creating structure from heterogeneous sources, as part of an information database, or more specifically, a 'concept base'. Structures called 'concept trees' can grow from the semi-structured sources when consistent sequences of concepts are presented. They might be considered to be dynamic databases, possibly a variation on the distributed Agent-Based or Cellular Automata models, or even related to Markov models. Semantic comparison of text is required, but the trees can be built more, from automatic knowledge and statistical feedback. This reduced model might also be attractive for security or privacy reasons, as not all of the potential data gets saved. The construction process maintains the key requirement of generality, allowing it to be used as part of a generic framework. The nature of the method also means that some level of optimisation or normalisation of the information will occur. This gives comparisons with databases or knowledge-bases, but a database system would firstly model its environment or datasets and then populate the database with instance values. The concept base deals with a more uncertain environment and therefore cannot fully model it beforehand. The model itself therefore evolves over time. Similar to databases, it also needs a good indexing system, where the construction process provides memory and indexing structures. These allow for more complex concepts to be automatically created, stored and retrieved, possibly as part of a more cognitive model. There are also some arguments, or more abstract ideas, for merging physical-world laws into these automatic processes.
description: Pre-print
How to describe collective decay of uncoupled modes in the input-output formalism
Creators: name: Propp, Tzula B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We extend the input-output formalism to study the behavior of uncoupled discrete modes (bosonic cavity modes and fermionic qubits) when they decay to the same Markovian continuum. When the continuum interacts with only a single mode, this decay is irreversible. However, when multiple modes decay to the same Markovian continuum they develop correlations and decay collectively. In the input-output formalism these correlations manifest in additional terms in the quantum Langevin equation. For two modes this collective decay can dramatically extend the lifetimes of both modes (Dicke subradiance) and, within the single-mode subsystem, induces non-Markovian memory effects including energy back flow.
description: 14 pages, 10 figures
Green's functions for elliptic and parabolic systems with Robin-type boundary conditions
Creators: name: Choi, Jongkeun
name: Kim, Seick
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The aim of this paper is to investigate Green's function for parabolic and elliptic systems satisfying a possibly nonlocal Robin-type boundary condition. We construct Green's function for parabolic systems with time-dependent coefficients satisfying a possibly nonlocal Robin-type boundary condition assuming that weak solutions of the system are locally Hölder continuous in the interior of the domain, and as a corollary we construct Green's function for elliptic system with a Robin-type condition. Also, we obtain Gaussian bound for Robin Green's function under an additional assumption that weak solutions of Robin problem are locally bounded up to the boundary. We provide some examples satisfying such a local boundedness property, and thus have Gaussian bounds for their Green's functions.
description: 41 pages, accepted in Journal of Functional Analysis
An analysis of polarized parton distribution functions with nonlinear QCD evolution equations
Creators: name: Han, Chengdong
name: Xie, Gang
name: Wang, Rong
name: Chen, Xurong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the polarized parton distribution functions from a QCD analysis of the worldwide polarized deep inelastic scattering data, based on the dynamical parton distribution model. All the sea quarks and gluons are dynamically generated from QCD radiations, with the nonperturbative input contains only the polarized valence quark distributions. This approach leads to a simple parametrization, which has only four free parameters. In the analysis, we apply the DGLAP equations with parton-parton recombination corrections. The parameterized nonperturbative input at an extremely low $Q_0^2$ reproduces well the spin-dependent structure functions measured at high $Q^{2}$. Comparisons with experimental observations and some other polarized parton distribution functions are also shown. Our results are in good agreement with the experimental data and consistent with some other parameterized models. Furthermore, our analysis gives the positive polarized gluon distribution and it suggests that the gluon distribution plays an important role to the proton spin content. The polarized antiquark distributions are non-zero at high $Q^2$ but quite small compared to polarized valence quark distribution, based on this dynamical parton model analysis. This analysis shows smaller statistical uncertainties for the polarized sea quark and gluon distributions, thanks to the fewer free parameters used for the parametrization of the initial polarized PDFs.
description: 13 pages, 15 figures
La acentuación como norma ortográfica en los estudiantes de séptimo cinco de la ESBU Julio Antonio Mella
Creators: name: Varona, Repositorio Español y Literatura
name: Vázquez Cedeño, Ailed
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 390306
subject: Secondary education

description: El Trabajo de Diploma aborda el empleo adecuado de la acentuación como norma ortográfica. Han sido diversos los autores que definen la ortografía, norma ortográfica y la acentuación, partiendo de sus principios teóricos y metodológicos los cuales responden al enfoque asumido en la investigación: el enfoque cognitivo, comunicativo y sociocultural. Los contenidos referidos a la acentuación, aunque aparecen declarados en el programa, no son bien trabajados de acuerdo con las exigencias planteadas, esto se debe a que se dedican más clases al contenido gramatical y literario. El objetivo de la investigación es proponer actividades que contribuyan al empleo adecuado de la acentuación como norma ortográfica en los estudiantes de séptimo cinco de la Escuela Secundaria Básica Urbana Julio Antonio Mella. A partir de los instrumentos aplicados se pudo constatar en qué estado se encuentra el empleo adecuado de la acentuación como norma ortográfica, las dificultades radican en el reconocimiento de estas normas. Las actividades tienen el fin de potenciar las habilidades necesarias para reconocer las palabras sujetas a normas de acentuación teniendo en cuenta la utilización de diversos textos. El trabajo de diploma responde a la línea de investigación del departamento de Español-Literatura: “El enfoque cognitivo, comunicativo y sociocultural como sustento para el tratamiento de las asignaturas filológicas y no filológicas” y se inserta en el proyecto de investigación científica institucional: “Comprender, analizar y construir el discurso profesional pedagógico en el contexto de la Universidad de Ciencias Pedagógicas Enrique José Varona”.
State of the Art (SOTA) Manual for Boilers
Creators: name: No Name Supplied
Publisher: name: State of New Jersey Department of Environmental Protection Air Quality Permitting Program
Year: 1997

description: These State of the Art (SOTA) performance levels apply to newly constructed and reconstructed industrial and utility boilers, with heat input rates equal to or greater than 20 MMBTU/hr.  As promulgated in the New Jersey Air Pollution Control Act N.J.S.A. 26:2C-9.2C, and as set forth in the implementing regulations of the Air Pollution Control Act (N.J.A.C. 7:27-8 and N.J.A.C. 7:27-22.35), newly constructed, reconstructed, or modified equipment and control apparatus is required to incorporate advances in the art of air pollution control developed for the kind and amount of air contaminant emitted by the applicant's equipment or control apparatus.  The Air Pollution Control Act of New Jersey directed the Department to publish technical manuals that would include performance levels with respect to air pollution control, to be used by some permit applicants for demonstrating advances in the art of air pollution control.  'Advances in the art of air pollution control' is commonly referred to as 'State-of-the-Art' or SOTA.  SOTA generally includes performance limits that are based on air pollution control technology, pollution prevention methods, and process modifications or substitutions that will provide the greatest emission reductions that are technologically and economically feasible.  There are 17 SOTA manuals included in this series.  They cover the following topics:  volatile organic storage tanks; transfer operations; petroleum refineries; asphalt plants; chemical and pharmaceutical processing and manufacturing industries; degreasers and other solvent based metal surface cleaners; surface coating operations; commercial sterilizers and fumigators using ethylene oxide; municipal wastewater/sludge handling and treatment systems; non-hazardous onsite remediation processes; bakery ovens; broilers; internal combustion engines; stationary gas turbines; glass industry; paint, ink, and adhesive manufacturing industries; graphic arts industry.
Mergers and Obliquities in Stellar Triples
Creators: name: Naoz, Smadar
name: Fabrycky, Daniel C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Many close stellar binaries are accompanied by a far-away star. The "eccentric Kozai-Lidov" (EKL) mechanism can cause dramatic inclination and eccentricity fluctuations, resulting in tidal tightening of inner binaries of triple stars. We run a large set of Monte-Carlo simulations including the secular evolution of the orbits, general relativistic precession and tides, and we determine the semimajor axis, eccentricity, inclination and spin-orbit angle distributions of the final configurations. We find that the efficiency of forming tight binaries (
description: Accepted to ApJ, 10 figures
The Ramond Sector of Heterotic String Field Theory
Creators: name: Kunitomo, Hiroshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We attempt to construct the full equations of motion for the Neveu-Schwarz and the Ramond sectors of the heterotic string field theory. Although they are non-polynomial also in the Ramond string field $Ψ$, we can construct them order by order in $Ψ$. Their explicit forms with the gauge transformations are given up to the next-to-next-to-leading order in $Ψ$. We also determine a subset of the terms to all orders. By introducing an auxiliary Ramond string field $Ξ$, we construct a covariant action supplemented with a constraint, which should be imposed on the equations of motion. We propose the Feynman rules and show how they reproduce well-known physical four-point amplitudes with external fermions.
description: 33 pages, 5 figures, uses PTPTeX.cls, v2:forms of general terms in EOM and the action are modified, v3:some explanations are improved, one extra appendix is added, published version, v4:an error is corrected,v5;typos in appA, v6:typos
Degenerating Kähler-Einstein cones, locally symmetric cusps, and the Tian-Yau metric
Creators: name: Biquard, Olivier
name: Guenancia, Henri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Let $X$ be a complex projective manifold and let $D\subset X$ be a smooth divisor. In this article, we are interested in studying limits when $β\to 0$ of Kähler-Einstein metrics $ω_β$ with a cone singularity of angle $2πβ$ along $D$. In our first result, we assume that $X\setminus D$ is a locally symmetric space and we show that $ω_β$ converges to the locally symmetric metric and further give asymptotics of $ω_β$ when $X\setminus D$ is a ball quotient. Our second result deals with the case when $X$ is Fano and $D$ is anticanonical. We prove a folklore conjecture asserting that a rescaled limit of $ω_β$ is the complete, Ricci flat Tian-Yau metric on $X\setminus D$. Furthermore, we prove that $(X,ω_β)$ converges to an interval in the Gromov-Hausdorff sense.
description: 51 pages, v2: exposition improved following the referee's suggestions, to appear in Invent. Math