cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chasing Better Deep Image Priors between Over- and Under-parameterization
Creators: name: Wu, Qiming
name: Chen, Xiaohan
name: Jiang, Yifan
name: Wang, Zhangyang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Deep Neural Networks (DNNs) are well-known to act as over-parameterized deep image priors (DIP) that regularize various image inverse problems. Meanwhile, researchers also proposed extremely compact, under-parameterized image priors (e.g., deep decoder) that are strikingly competent for image restoration too, despite a loss of accuracy. These two extremes push us to think whether there exists a better solution in the middle: between over- and under-parameterized image priors, can one identify "intermediate" parameterized image priors that achieve better trade-offs between performance, efficiency, and even preserving strong transferability? Drawing inspirations from the lottery ticket hypothesis (LTH), we conjecture and study a novel "lottery image prior" (LIP) by exploiting DNN inherent sparsity, stated as: given an over-parameterized DNN-based image prior, it will contain a sparse subnetwork that can be trained in isolation, to match the original DNN's performance when being applied as a prior to various image inverse problems. Our results validate the superiority of LIPs: we can successfully locate the LIP subnetworks from over-parameterized DIPs at substantial sparsity ranges. Those LIP subnetworks significantly outperform deep decoders under comparably compact model sizes (by often fully preserving the effectiveness of their over-parameterized counterparts), and they also possess high transferability across different images as well as restoration task types. Besides, we also extend LIP to compressive sensing image reconstruction, where a pre-trained GAN generator is used as the prior (in contrast to untrained DIP or deep decoder), and confirm its validity in this setting too. To our best knowledge, this is the first time that LTH is demonstrated to be relevant in the context of inverse problems or image priors.
description: Codes are available at https://github.com/VITA-Group/Chasing-Better-DIPs
Arrenoseius robertogonzalezi Trincado & Martin 2018
Creators: name: BorgesK, Vinicius
name: de MoraesK, Gilberto J.
name: CastilhoK, Raphael de Campos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Arrenoseius
Arrenoseius robertogonzalezi

description: Arrenoseius robertogonzalezi Trincado & Martin, 2018
 Arrenoseius robertogonzalezi Trincado & Martin, in Trincado et al. 2018: 324.
description: Published as part of BorgesK, Vinicius, de MoraesK, Gilberto J. & CastilhoK, Raphael de Campos, 2023, A new record of an Arrenoseius Wainstein species and a new species of Chelaseius Muma & Denmark (Mesostigmata: Phytoseiidae) from Brazil, pp. 411-418 in Acarologia 63 (2) on page 412, DOI: 10.24349/soei-hdfd, http://zenodo.org/record/10787132
Evaluation of equilibrium constants for deprotonation and lactonisation of α-D-isosaccharinic acid
Creators: name: Dhanpat Rai
name: Kitamura, Akira
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: A great deal of disagreement exists in the literature regarding the intrinsic deprotonation and lactonisation constants of α-D-isosaccharinic acid (ISA). Based on a combination of nuclear magnetic resonance and interpretations using the specific ion interaction theory (SIT) of extensive experimental Ca(ISA)2(cr) solubility data involving α-D-isosaccharinic acid, the reliable value of log10 K° for [HISA(aq) ISA− + H+] is −3.27 ± 0.01 and for [HISA(aq) ISL(α-D-isosaccharinate-1,4-lactone)(aq) + H2O] is 0.49 ± 0.09. These data also provide log10 K° of −3.76 ± 0.09 for the reaction [ISL(aq) + H2O ISA− + H+] and −3.88 ± 0.09 for the composite reaction [HISA(aq) + ISL(aq) ISA− + H+]. Reinterpretation of extensive Ca(ISA)2(cr) solubility data using the SIT activity coefficient model provides log10 K° of −6.40 ± 0.09 for [Ca(ISA)2(cr) Ca2+ + 2(ISA)−] and of 1.70 ± 0.09 for [Ca2+ + ISA− CaISA+] which are consistent with all of the available values.
Generation of sub-diffraction-limited pure longitudinal magnetization by the inverse Faraday effect by tightly focusing an azimuthally polarized vortex beam
Creators: name: Jiang, Yunshan
name: Li, Xiangping
name: Gu, Min
Publisher: name: Swinburne
Year: 2024

description: In this Letter we report on the generation of sub-diffraction-limited pure longitudinal magnetization in optomagnetic materials. The interaction between polarization singularities of cylindrically polarized beams and optical vortices in the tight focus of a high numerical-aperture objective as well as the induced magnetic fields through the inverse Faraday effect are investigated. A pure longitudinal magnetization distribution throughout the entire focal plane which has a 15% reduction in the lateral full width at half-maximum, is achieved by tightly focusing an azimuthally polarized vortex beam.
Hydrogen bonds in Zif268 proteins – a theoretical perspective
Creators: name: Umadevi Palanivel
name: Senthilkumar Lakshmipathi
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Hematology

description: The aim of the work was to elucidate the presence of different hydrogen bond (H-bond) in five Zif268 proteins (1A1F, 1A1G, 1A1H, 1A1I and 1A1K). For this purpose, we have performed the QM/MM and molecular dynamics (MD) studies, the results of which reveal that H-bonds depend on the amino acid sequence and orientation of the H-bond donor atoms. Further, high specificity of Arg and Asn is observed for guanine and adenine, respectively. Furthermore, both conventional and non-conventional hydrogen bond also exists in the proteins, among them N–H⋯O H-bonds are the strongest. Besides, the non-conventional bonds play a role in the protein folding and DNA stacking. From the QSAR properties, amino acids such as asparagine and aspartic acids are the major reactive sites in the Zif268 protein. The electron affinities of Zif268 proteins are high, so the charge transfer occurs from the DNA to the protein molecules. NBO analysis indicates the majority of charge transfer occurs from DNA to the corresponding anti-bonding orbital of the peptides. Root mean square deviation and Rg (radius of gyration) show that 1A1F is more compact and in native state during MD simulation. The minimum Rg leads to the large number of hydrogen bonds formation in 1A1F. Higher solvent accessible surface area in 1A1I indicates that the cavity inside the protein is large.
Chelaseius Muma & Denmark 1968
Creators: name: BorgesK, Vinicius
name: de MoraesK, Gilberto J.
name: CastilhoK, Raphael de Campos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Chelaseius

description: Chelaseius Muma & Denmark
 Chelaseius Muma & Denmark 1968: 232.
 Chelaseius, Denmark & Kolodochka 1990: 219 ; Moraes et al. 2004: 56.
description: Published as part of BorgesK, Vinicius, de MoraesK, Gilberto J. & CastilhoK, Raphael de Campos, 2023, A new record of an Arrenoseius Wainstein species and a new species of Chelaseius Muma & Denmark (Mesostigmata: Phytoseiidae) from Brazil, pp. 411-418 in Acarologia 63 (2) on page 413, DOI: 10.24349/soei-hdfd, http://zenodo.org/record/10787132
Protein expression in dairy cows with and without subclinical hypocalcaemia
Creators: name: PX Wang
name: S Shu
name: C Xia
name: Z Wang
name: L Wu
name: B Wang
name: CC Xu
name: J Liu
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry

description: AIM: To determine differences in plasma proteomic profiles between healthy cows and those with subclinical hypocalcaemia within 12 hours after calving, and thereby explore the underlying biological mechanism of subclinical hypocalcaemia in dairy cows. METHODS: Plasma samples were collected within 6 hours of calving from Holstein cows on a farm in Heilongjiang, China; 32 with subclinical hypocalcaemia (plasma calcium concentration 1.38–2.00 mmol/L and no clinical signs) and 59 control cows (plasma calcium concentration 2.10–2.8 mmol/L). Plasma samples were applied to weak cationic exchange protein chips for protein profiling by surface-enhanced laser desorption/ionisation time-of-flight mass spectrometry (SELDI-TOF-MS), and the data were analysed using the PBS-IIC system. The amplitude of peaks for the two groups were compared using the Wilcoxon sum-rank test, and the mass-to-charge ratio of the peaks that differed was used to identify peptide fragments using the Swiss-Prot protein database. RESULTS: Seven peaks were identified in the subclinical hypocalcaemia group that differed from those of the control group (p<0.001), that represented six unique proteins. Expression of serum albumin, fibrinogen alpha chain, amyloid beta A4 proteins and neurosecretory protein VGF were increased, and expression of apolipoprotein A-II and serum amyloid A proteins were decreased in the subclinical hypocalcaemic cows compared with control cows. CONCLUSION: Use of SELDI-TOF-MS technology can effectively identify differences in plasma protein expression patterns in cows with subclinical hypocalcaemia. Neurosecretory protein VGF and amyloid beta A4 protein might represent useful biomarkers for diagnosis of subclinical hypocalcaemia.
Protein expression in dairy cows with and without subclinical hypocalcaemia
Creators: name: PX Wang
name: S Shu
name: C Xia
name: Z Wang
name: L Wu
name: B Wang
name: CC Xu
name: J Liu
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry

description: AIM: To determine differences in plasma proteomic profiles between healthy cows and those with subclinical hypocalcaemia within 12 hours after calving, and thereby explore the underlying biological mechanism of subclinical hypocalcaemia in dairy cows. METHODS: Plasma samples were collected within 6 hours of calving from Holstein cows on a farm in Heilongjiang, China; 32 with subclinical hypocalcaemia (plasma calcium concentration 1.38–2.00 mmol/L and no clinical signs) and 59 control cows (plasma calcium concentration 2.10–2.8 mmol/L). Plasma samples were applied to weak cationic exchange protein chips for protein profiling by surface-enhanced laser desorption/ionisation time-of-flight mass spectrometry (SELDI-TOF-MS), and the data were analysed using the PBS-IIC system. The amplitude of peaks for the two groups were compared using the Wilcoxon sum-rank test, and the mass-to-charge ratio of the peaks that differed was used to identify peptide fragments using the Swiss-Prot protein database. RESULTS: Seven peaks were identified in the subclinical hypocalcaemia group that differed from those of the control group (p<0.001), that represented six unique proteins. Expression of serum albumin, fibrinogen alpha chain, amyloid beta A4 proteins and neurosecretory protein VGF were increased, and expression of apolipoprotein A-II and serum amyloid A proteins were decreased in the subclinical hypocalcaemic cows compared with control cows. CONCLUSION: Use of SELDI-TOF-MS technology can effectively identify differences in plasma protein expression patterns in cows with subclinical hypocalcaemia. Neurosecretory protein VGF and amyloid beta A4 protein might represent useful biomarkers for diagnosis of subclinical hypocalcaemia.
A dyadic view of rational convex sets
Creators: name: Czédli, Gábor
name: Maróti, Miklós
name: Romanowska, A. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 08A99

description: Let F be a subfield of the field R of real numbers. Equipped with the binary arithmetic mean operation, each convex subset C of F^n becomes a commutative binary mode, also called idempotent commutative medial (or entropic) groupoid. Let C and C' be convex subsets of F^n. Assume that they are of the same dimension and at least one of them is bounded, or F is the field of all rational numbers. We prove that the corresponding idempotent commutative medial groupoids are isomorphic iff the affine space F^n over F has an automorphism that maps C onto C'. We also prove a more general statement for the case when C,C'\subseteq F^n are considered barycentric algebras over a unital subring of F that is distinct from the ring of integers. A related result, for a subring of R instead of a subfield F, is given in \cite{rczgaroman2}.
description: 12 pages, 3 figures
Varieties whose tolerances are homomorphic images of their congruences
Creators: name: Czedli, Gabor
name: Kiss, Emil W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary 08A30. Secondary 08B05, 08A60, 06B10, and 20M99

description: The homomorphic image of a congruence is always a tolerance (relation) but, within a given variety, a tolerance is not necessarily obtained this way. By a Maltsev-like condition, we characterize varieties whose tolerances are homomorphic images of their congruences (TImC). As corollaries, we prove that the variety of semilattices, all varieties of lattices, and all varieties of unary algebras have TImC. We show that a congruence n-permutable variety has TImC if and only if it is congruence permutable, and construct an idempotent variety with a majority term that fails TImC.
The asymptotic number of planar, slim, semimodular lattice diagrams
Creators: name: Czédli, Gábor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 06C10

description: A lattice L is slim if it is finite and the set of its join-irreducible elements contains no three-element antichain. We prove that there exists a positive constant C such that, up to similarity, the number of planar diagrams of these lattices of size n is asymptotically C times 2 to the n.
description: 7 pages, 2 figures
Notes on planar semimodular lattices. VII. Resections of planar semimodular lattices
Creators: name: Czédli, Gábor
name: Grätzer, George
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 06C10 (Secondary: 06B15)

description: A recent result of G. Czédli and E.\,T. Schmidt gives a construction of slim (planar) semimodular lattices from planar distributive lattices by adding elements, adding "forks". We give a construction that accomplishes the same by deleting elements, by "resections".
description: 12 pages, 6 figures
Parallel multiphoton microscopy with cylindrically polarized multifocal arrays
Creators: name: Gu, Min
name: Lin, Han
name: Li, Xiangping
Publisher: name: Swinburne
Year: 2024

description: Diffraction-limited cylindrically polarized multifocal arrays are created in the focal region of a high numerical-aperture objective for multiphoton microscopy by applying the dynamic phase modulation on an incident light beam. We show that this kind of cylindrical-polarization multifocal multiphoton microscopy exhibits a parallel imaging capacity but also a dynamic switching-on or -off feature of individual focal spots. The parallel multiphoton microscopy results of the polarization-sensitive gold nanorods under the illumination of radially or azimuthally polarized multifocal arrays allow for the fast determination of the orientation of nanorods.
Phylogenetic relationships of the populations of Iranolacerta brandtii (de Filippi, 1863) (Squamata: Lacertidae) recently found in Eastern Anatolia, Turkey
Creators: name: Rato, Catarina
name: Yıldız, Mehmet Zülfü
name: Naşit İğci
name: Kurtuluş Olgun
name: Ilgaz, Çetin
name: Avcı, Aziz
name: Faraham Ahmadzadeh
name: Carretero, Miguel A.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biological Sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Earth and Environmental Sciences
subject: Evolutionary Biology

description: The Persian Lizard, Iranolacerta brandtii, was until recently considered to be restricted to north-western Iran (Azerbaijan and Esfahan provinces). However, two recent studies have revealed the existence of populations in Eastern Anatolia, extending the range of this species for about 230 km westwards. The fragmented distribution of this species has been considered to be a consequence of the climatic oscillations during the Pleistocene and Holocene, which created events of alternating contact and isolation of populations in distinct glacial refugia. According to our obtained genealogy derived from three mitochondrial fragments (12S rRNA, 16S rRNA and cytb), the Turkish specimens cluster together but form an independent clade, sister to the individuals from Tabriz in Iran. The separation of these two clades is concurrent with the cladogenesis between the Esfahan and Ardabil clades, estimated to have taken place during the late Holocene.
Super-resolving single nitrogen vacancy centers within single nanodiamonds using a localization microscope
Creators: name: Gu, Min
name: Cao, Yaoyu
name: Castelletto, Stefania
name: Kouskousis, Betty
name: Li, Xiangping
Publisher: name: Swinburne
Year: 2024

description: In this paper, we show super-resolving single nitrogen vacancy (NV) centers with a sub-20 nanometer resolution in a wide-field localization microscope based on the discovery of photoluminescence blinking in high-pressure high-temperature nanodiamonds (NDs). The photon statistics reveals that NDs containing not only single but also multiple NV centers show photoluminescence blinking. The combination of an atomic force microscope and an optical localization microscope built on the blinking feature enables the optically resolved two NV centers within single NDs for the first time. Our method establishes new avenues for studying nanoscale photon dynamics associated with single NV centers within NDs together with ND-based ultra-sensitive bioimaging devices.
Protein expression in dairy cows with and without subclinical hypocalcaemia
Creators: name: PX Wang
name: S Shu
name: C Xia
name: Z Wang
name: L Wu
name: B Wang
name: CC Xu
name: J Liu
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Biophysics
subject: Biological Sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Chemistry
subject: Physiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Medicine
subject: Biochemistry

description: AIM: To determine differences in plasma proteomic profiles between healthy cows and those with subclinical hypocalcaemia within 12 hours after calving, and thereby explore the underlying biological mechanism of subclinical hypocalcaemia in dairy cows.METHODS: Plasma samples were collected within 6 hours of calving from Holstein cows on a farm in Heilongjiang, China; 32 with subclinical hypocalcaemia (plasma calcium concentration 1.38– 2.00 mmol/Land no clinical signs) and 59 control cows (plasma calcium concentration 2.10 to 2.8 mmol/L). Plasma samples were applied to weak cationic exchange protein chips for protein profiling by surface-enhanced laser desorption/ionisation time-of-flight mass spectrometry (SELDI-TOF-MS), and the data were analysed using the PBS-IIC system. The amplitude of peaks for the two groups were compared using the Wilcoxon sum-rank test, and the mass-to-charge ratio of the peaks that differed was used to identify peptide fragments using the Swiss-Prot protein database.RESULTS: Seven peaks were identified in the subclinical hypocalcaemia group that differed from those of the control group (p<0.001), that represented six unique proteins. Expression of serum albumin, fibrinogen alpha chain, amyloid beta A4 proteins and neurosecretory protein VGF were increased, and expression of apolipoprotein A-II and serum amyloid A proteins were decreased in the subclinical hypocalcaemic cows compared with control cows.CONCLUSION: Use of SELDI-TOF-MS technology can effectively identify differences in plasma protein expression patterns in cows with subclinical hypocalcaemia. Neurosecretory protein VGF and amyloid beta A4 protein might represent useful biomarkers for diagnosis of subclinical hypocalcaemia.Wang_Supp_Information.pdf
Independent joins of tolerance factorable varieties
Creators: name: Chajda, Ivan
name: Czédli, Gábor
name: Halas, Radomir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary: 08A30. Secondary: 08B99, 06B10, 20M07

description: Let L denote the variety of lattices. In 1982, the second author proved that L is strongly tolerance factorable, that is, the members of L have quotients in L modulo tolerances, although L has proper tolerances. We did not know any other nontrivial example of a strongly tolerance factorable variety. Now we prove that this property is preserved by forming independent joins (also called products) of varieties. This enables us to present infinitely many {strongly} tolerance factorable varieties with proper tolerances. Extending a recent result of G.\ Czédli and G.\ Grätzer, we show that if V is a strongly tolerance factorable variety, then the tolerances of V are exactly the homomorphic images of congruences of algebras in V. Our observation that (strong) tolerance factorability is not necessarily preserved when passing from a variety to an equivalent one leads to an open problem.
description: 10 pages
The structure of young people's leisure and their gambling behaviour
Creators: name: Moore, Susan
name: Ohtsuka, K.
Publisher: name: Swinburne
Year: 2024

description: In this study, the relationship between adolescent leisure and gambling was explored. Three different models of time usage were compared as potential predictors of gambling behaviour and problem gambling among 769 adolescents (15 to 18 years old) from five secondary schools in Melbourne. More leisure time, particularly unstructured leisure, predicted more frequent gambling behaviour for girls and boys. Specific activity factors provided the best time usage-based prediction of gambling behaviour. More time socialising and being involved in organised sport predicted more gambling for boys, possibly because of the access these activities provide to gambling venues. For boys, lower levels of so-called masculine pursuits (activities with other male peers) were associated with problem gambling, as were 'cognitive pursuits' such as board games and collecting hobbies. For girls, more time in studious activity mitigated against gambling frequency. Lower levels of typically 'feminine' adolescent pursuits predicted problem gambling. By far the major predictor of problem gambling for both sexes was gambling frequency. The role of leisure in problem gambling was discussed in terms of the role played by peer socialising, which may increase risk through access to gambling venues yet simultaneously increase protection through a sense of belongingness.
Surface-mode enhanced photonic-crystal nano-imaging observed by a scanning near-field optical microscope
Creators: name: Zhang, Qiming
name: Li, Xiangping
name: Gu, Min
Publisher: name: Swinburne
Year: 2024

description: In this paper, we experimentally demonstrate the sub-wavelength loss-less nano-imaging effect achieved by the surface-mode coupling in a negative refraction silicon photonic crystal at a wavelength of 1100 nm. The surface mode and nano-imaging effect of the photonic crystal are experimentally studied with a scanning near-field optical microscope. The thickness and the wavelength dependence of the full width at half maximum of the focal spot reveal a direct evidence of the surface-mode enhanced nano-imaging effect, which is consistent with the simulation. As a consequence, a focal spot with a lateral resolution of λ/3 at the predicted wavelength has been achieved.
Multiparameter quantum groups at roots of unity
Creators: name: García, Gastón Andrés
name: Gavarini, Fabio
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B37 (primary), 16T05, 16T20 (secondary)

description: We address the study of multiparameter quamtum groups (=MpQG's) at roots of unity, namely quantum universal enveloping algebras $ U_{\boldsymbol{\rm q}}(\mathfrak{g}) $ depending on a matrix of parameters $ \boldsymbol{\rm q} = {\big( q_{ij} \big)}_{i, j \in I} \, $. This is performed via the construction of quantum root vectors and suitable "integral forms" of $ U_{\boldsymbol{\rm q}}(\mathfrak{g}) \, $, a \textsl{restricted one} - generated by quantum divided powers and quantum binomial coefficients - and an \textsl{unrestricted\/} one - where quantum root vectors are suitably renormalized. The specializations at roots of unity of either forms are the "MpQG's at roots of unity" we look for. In particular, we study special subalgebras and quotients of our MpQG's at roots of unity - namely, the multiparameter version of small quantum groups - and suitable associated quantum Frobenius morphisms, that link the MpQG's at roots of 1 with MpQG's at 1, the latter being classical Hopf algebras bearing a well precise Poisson-geometrical content. A key point in the discussion - often at the core of our strategy - is that every MpQG is actually a 2-cocycle deformation of the algebra structure of (a lift of) the "canonical" one-parameter quantum group by Jimbo-Lusztig, so that we can often rely on already established results available for the latter. On the other hand, depending on the chosen multiparameter $ \boldsymbol{\rm q} $ our quantum groups yield (through the choice of integral forms and their specialization) different semiclassical structures, namely different Lie coalgebra structures and Poisson structures on the Lie algebra and algebraic group underlying the canonical one-parameter quantum group.
description: 71 pages. Final version, shortened and polished after the referee's comments - the mathematical content, though, is unchanged with respect to the previous version. To appear in "Journal of Noncommutative Geometry"
LTER Zöbelboden, Austria, Litterfall chemistry, 2016
Creators: name: Kobler, Johannes
Publisher: name: FZ-Juelich B2SHARE
Year: 2020
Subjects: 3.3.2 → Earth sciences → Environmental science
litter fall
nutrients
LTER site

description: Litterfall chemistry data of the LTER station Zöbelboden from the year 2016
Cinematic Visualization of Multiresolution Data: Ytini for Adaptive Mesh Refinement in Houdini
Creators: name: Borkiewicz, Kalina
name: Naiman, J. P.
name: Lai, Haoming
Publisher: name: arXiv
Year: 2018
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: We have entered the era of large multidimensional datasets represented by increasingly complex data structures. Current tools for scientific visualization are not optimized to efficiently and intuitively create cinematic production quality, time-evolving representations of numerical data for broad impact science communication via film, media, or journalism. To present such data in a cinematic environment, it is advantageous to develop methods that integrate these complex data structures into industry standard visual effects software packages, which provide a myriad of control features otherwise unavailable in traditional scientific visualization software. In this paper, we present the general methodology for the import and visualization of nested multiresolution datasets into commercially available visual effects software. We further provide a specific example of importing Adaptive Mesh Refinement data into the software Houdini. This paper builds on our previous work, which describes a method for using Houdini to visualize uniform Cartesian datasets. We summarize a tutorial available on the website www.ytini.com, which includes sample data downloads, Python code, and various other resources to simplify the process of importing and rendering multiresolution data.
description: 24 pages, 14 figures
Repeated exposure to carbon nanotube-based aerosols does not affect the functional properties of a 3D human epithelial airway model
Creators: name: Savvina Chortarea
name: Clift, Martin J. D.
name: Vanhecke, Dimitri
name: Endes, Carola
name: Wick, Peter
name: Petri-Fink, Alke
name: Rothen-Rutishauser, Barbara
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Developmental Biology
subject: Biological Sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Biotechnology
subject: Pharmacology
subject: Molecular Biology
subject: Microbiology
subject: Medicine
subject: Engineering
subject: Biochemistry
subject: Biophysics

description: Carbon nanotubes (CNTs) represent one of the most promising engineered nanomaterials, with possible applications in advanced engineering and biomedical technologies. During their production, human exposure to CNTs may occur via inhalation. Therefore, the aim of this study was to mimic inhalation of multi-walled CNTs (MWCNTs) in vitro as realistically as possible, by producing MWCNTs aerosols via an Air–Liquid Interface Cell Exposure System (ALICE), combined with a 3D epithelial airway barrier model cultivated at the air–liquid interface (ALI). To address the consequences of an extended exposure period, repeated exposures of MWCNTs (total deposition 1.15 μg/cm2) were applied to the co-culture system, either over one day (one day repeated exposure) or three days (three day repeated exposure scenario). Although in both repeated exposure scenarios MWCNTs were found to interact with the different cell types, they did not induce any cytotoxicity or alterations in cell morphology, nor did they elucidate any significant increase in pro-inflammatory markers compared to control cultures. Similar results were also observed following single MWCNTs exposures at deposited concentrations of 0.14, 0.20 and 0.39 µg/cm2. Cells exposed repeatedly to MWCNTs for three days, however did show a decrease in reduced glutathione levels, although not significant (p > 0.05). In conclusion, we have presented a realistic in vitro alternative to mimic occupational exposure of MWCNTs and by applying this approach it was shown that repeated MWCNT exposures to lung cell cultures at the ALI elicit a limited biological impact over a three day period.
The Calabi-Yau problem for Riemann surfaces with finite genus and countably many ends
Creators: name: Alarcon, Antonio
name: Forstneric, Franc
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 53A10, 53C42, 32B15, 32H02

description: In this paper, we show that if $R$ is a compact Riemann surface and $M=R\setminus\,\bigcup_i D_i$ is a domain in $R$ whose complement is a union of countably many pairwise disjoint smoothly bounded closed discs $D_i$, then $M$ is the complex structure of a complete bounded minimal surface in $\mathbb R^3$. We prove that there is a complete conformal minimal immersion $X:M\to\mathbb R^3$ extending to a continuous map $X:\overline M\to\mathbb R^3$ such that $X(bM)=\bigcup_i X(bD_i)$ is a union of pairwise disjoint Jordan curves. This extends a recent result for bordered Riemann surfaces.
description: Rev. Mat. Iberoam., to appear
Immersions of open Riemann surfaces into the Riemann sphere
Creators: name: Forstneric, Franc
Publisher: name: arXiv
Year: 2019
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32H02, 57R42, 58D10

description: In this paper we show that the space of holomorphic immersions from any given open Riemann surface, $M$, into the Riemann sphere $\mathbb{CP}^1$ is weakly homotopy equivalent to the space of continuous maps from $M$ to the complement of the zero section in the tangent bundle of $\mathbb{CP}^1$. We show in particular that this space has $2^k$ path components, where $H_1(M,\mathbb Z)={\mathbb Z}^k$. We also prove a parametric version of Mergelyan approximation theorem for maps from Riemann surfaces into any complex manifold, a result used in the proof of our main theorem.
description: Izvestiya: Math. 85:3 (2021), to appear
Investigating Constraint Programming and Hybrid Methods for Real World Industrial Test Laboratory Scheduling
Creators: name: Geibinger, Tobias
name: Mischek, Florian
name: Musliu, Nysret
Publisher: name: arXiv
Year: 2019
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper we deal with a complex real world scheduling problem closely related to the well-known Resource-Constrained Project Scheduling Problem (RCPSP). The problem concerns industrial test laboratories in which a large number of tests has to be performed by qualified personnel using specialised equipment, while respecting deadlines and other constraints. We present different constraint programming models and search strategies for this problem. Furthermore, we propose a Very Large Neighborhood Search approach based on our CP methods. Our models are evaluated using CP solvers and a MIP solver both on real-world test laboratory data and on a set of generated instances of different sizes based on the real-world data. Further, we compare the exact approaches with VLNS and a Simulated Annealing heuristic. We could find feasible solutions for all instances and several optimal solutions and we show that using VLNS we can improve upon the results of the other approaches.
Evolution of cooperation in networked heterogeneous fluctuating environments
Creators: name: Stojkoski, Viktor
name: Karbevski, Marko
name: Utkovski, Zoran
name: Basnarkov, Lasko
name: Kocarev, Ljupco
Publisher: name: arXiv
Year: 2019
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Fluctuating environments are situations where the spatio-temporal stochasticity plays a significant role in the evolutionary dynamics. The study of the evolution of cooperation in these environments typically assumes a homogeneous, well mixed population, whose constituents are endowed with identical capabilities. In this paper, we generalize these results by developing a systematic study for the cooperation dynamics in fluctuating environments under the consideration of structured, heterogeneous populations with individual entities subjected to general behavioral rules. Considering complex network topologies, and a behavioral rule based on generalized reciprocity, we perform a detailed analysis of the effect of the underlying interaction structure on the evolutionary stability of cooperation. We find that, in the presence of environmental fluctuations, the cooperation dynamics can lead to the creation of multiple network components, each with distinct evolutionary properties. This is paralleled to the freezing state in the Random Energy Model. We utilize this result to examine the applicability of our generalized reciprocity behavioral rule in a variety of settings. We thereby show that the introduced rule leads to steady state cooperative behavior that is always greater than or equal to the one predicted by the evolutionary stability analysis of unconditional cooperation. As a consequence, the implementation of our results may go beyond explaining the evolution of cooperation. In particular, they can be directly applied in domains that deal with the development of artificial systems able to adequately mimic reality, such as reinforcement learning.
The Calabi-Yau property of superminimal surfaces in self-dual Einstein four-manifolds
Creators: name: Forstneric, Franc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 53A10, 53C25, 53C26. Secondary 32E30, 37J55

description: In this paper, we show that if $(X,g)$ is an oriented four dimensional Einstein manifold which is self-dual or anti-self-dual then superminimal surfaces in $X$ of appropriate spin enjoy the Calabi-Yau property, meaning that every immersed surface of this type from a bordered Riemann surface can be uniformly approximated by complete superminimal surfaces with Jordan boundaries. The proof uses the theory of twistor spaces and the Calabi-Yau property of holomorphic Legendrian curves in complex contact manifolds.
description: J. Geom. Anal., to appear
Hydrogen bonds in Zif268 proteins – a theoretical perspective
Creators: name: Umadevi Palanivel
name: Senthilkumar Lakshmipathi
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Hematology
subject: Cancer
subject: Biological Sciences
subject: Chemistry
subject: Biotechnology
subject: Molecular Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physics
subject: Biochemistry
subject: Biophysics

description: The aim of the work is to elucidate the presence of different hydrogen bond (H-bond) in five Zif268 proteins (1A1F, 1A1G, 1A1H, 1A1I and 1A1K). For this purpose, we have performed the QM/MM and molecular dynamics studies, the results of which reveal that H-bonds depend on the amino acid sequence and orientation of the H-bond donor atoms. Further, high specificity of Arg and Asn is observed for guanine and adenine respectively. Furthermore, both conventional and nonconventional hydrogen bond also exists in the proteins, among them N-H⋯O H-bonds are the strongest. Besides, the nonconventional bonds play a role in the protein folding and DNA stacking. From the QSAR properties, amino acids such as aspargine and aspartic acids are the major reactive sites in the Zif268 protein. The electron affinities of Zif268 proteins are high, so the charge transfer occurs from the DNA to the protein molecules. NBO analysis indicates, majority of charge transfer occurs from DNA to the corresponding antibonding orbital of the peptides. RMSD (root mean square deviation) and Rg (radius of gyration) shows that 1A1F is more compact and in native state during molecular dynamics (MD) simulation. The minimum Rg leads to the large number of hydrogen bonds formation in 1A1F. Higher solvent accessible surface area in 1A1I indicates that the cavity inside the protein is large.
Impairment of autophagosome-lysosome fusion in the buff mutant mice with the VPS33AD251E mutation
Creators: name: Yuanli Zhen
name: Li, Wei
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Cancer
subject: Neuroscience
subject: Molecular Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biochemistry
subject: Biophysics

description: The HOPS (homotypic fusion and protein sorting) complex functions in endocytic and autophagic pathways in both lower eukaryotes and mammalian cells through its involvement in fusion events between endosomes and lysosomes or autophagosomes and lysosomes. However, the differential molecular mechanisms underlying these fusion processes are largely unknown. Buff (bf) is a mouse mutant that carries an Asp251-to-Glu point mutation (D251E) in the VPS33A protein, a tethering protein and a core subunit of the HOPS complex. Bf mice showed impaired spontaneous locomotor activity, motor learning and autophagic activity. Although the gross anatomy of the brain was apparently normal, the number of Purkinje cells was significantly reduced. Furthermore, we found that fusion between autophagosomes and lysosomes was defective in bf cells without compromising the endocytic pathway. The direct association of mutant VPS33AD251E with the autophagic SNARE complex, STX17 (syntaxin 17)-VAMP8-SNAP29, was enhanced. In addition, the VPS33AD251E mutation enhanced interactions with other HOPS subunits, namely VPS41, VPS39, VPS18, and VPS11, except for VPS16. Reduction of the interactions between VPS33AY440D and several other HOPS subunits led to decreased association with STX17. These results suggest that the VPS33AD251E mutation plays dual roles by increasing the HOPS complex assembly and its association with the autophagic SNARE complex, which selectively affects the autophagome-lysosome fusion that impairs basal autophagic activity and induces Purkinje cell loss.
Set-theoretic type solutions of the braid equation
Creators: name: Guccione, Jorge A.
name: Guccione, Juan J.
name: Valqui, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16T25, 16T15

description: In this paper we begin the study of set-theoretic type solution of the braid equation. Our theory includes set-theoretical solutions as basic examples. We show that the relationships between set-theoretical solutions, q-cycle sets, q-braces, skew-braces, matched pairs of groups and invertible $1$-cocycles remain valid in our setting.
description: 41 pages. We change the already published paper. In Theorem 5.17 we adapt Theorem 1 of [21] to the context of Hopf algebras. We rewrite part of sections 5 and 6, dropping in several places the requirement that the antipode S of H be bijective. In Subsection 6.2, we show that the category of Hopf skew braces is isomorphic to the category of Yetter-Drinfeld braces, recently introduced in [10]
Quarkonium Semiclassical Transport in Quark-Gluon Plasma: Factorization and Quantum Correction
Creators: name: Yao, Xiaojun
name: Mehen, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study quarkonium transport in the quark-gluon plasma by using the potential nonrelativistic QCD (pNRQCD) effective field theory and the framework of open quantum systems. We argue that the coupling between quarkonium and the thermal bath is weak using separation of scales, so the initial density matrix of the total system factorizes and the time evolution of the subsystem is Markovian. We derive the semiclassical Boltzmann equation for quarkonium by applying a Wigner transform to the Lindblad equation and carrying out a semiclassical expansion. We resum relevant interactions to all orders in the coupling constant at leading power of the nonrelativistic and multipole expansions. The derivation is valid for both weakly coupled and strongly coupled quark-gluon plasmas. We find reaction rates in the transport equation factorize into a quarkonium dipole transition function and a chromoelectric gluon distribution function. For the differential reaction rate, the definition of the momentum dependent chromoelectric gluon distribution function involves staple-shaped Wilson lines. For the inclusive reaction rate, the Wilson lines collapse into a straight line along the real time axis and the distribution becomes momentum independent. The relation between the two Wilson lines is analogous to the relation between the Wilson lines appearing in the gluon parton distribution function (PDF) and the gluon transverse momentum dependent parton distribution function (TMDPDF). The centrality dependence of the quarkonium nuclear modification factor measured by experiments probes the momentum independent distribution while the transverse momentum dependence and measurements of the azimuthal angular anisotropy may be able to probe the momentum dependent one. We discuss one way to indirectly constrain the quarkonium in-medium real potential by using the factorization formula and lattice calculations. The leading quantum correction to the semiclassical transport equation of quarkonium is also worked out. The study can be easily generalized to quarkonium transport in cold nuclear matter, which is relevant for quarkonium production in eA collisions in the future Electron-Ion Collider.
description: 35 pages, 3 figures; v2: added an appendix to explain the Wilson lines at infinite time; v3: make the assumed hierarchy more general; v4: typos in (2.12) and (2.13) corrected
Separation and identification of bioactive compounds in Anabasis articulata (Forsk) Moq. roots
Creators: name: Nacéra Ghembaza
name: Belyagoubi-Benhammou, Nabila
name: Bekkara, Fawzia Atik
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: In the present paper, for the first time, we are interested to separate and identify some bioactive fractions isolated from the roots of a Saharan plant Anabasis articulata, which is widely used in traditional medicine against cancer. The crude methanolic extract of the roots was fractionated on column chromatography, and eluted with dichloromethane/methanol each time with increasing polarity of methanol; 17 fractions were separated. One of these fractions named F12 showed more antioxidant activity to scavenge DPPH free radical with percentage inhibition of 95.29%. F12 was separated by thin-layer chromatography (TLC) to give 12 compounds. A second preparative TLC of compound 2, which has antioxidative activity of 74.92%, provided the three phenolic acids M1, M2 and M3, analysed by high-performance liquid chromatography and UV–visible spectrophotometry.
Simple modules of small quantum groups at dihedral groups
Creators: name: García, Gastón Andrés
name: Vay, Cristian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16T20, 17B37, 22E47, 17B10

description: Based on previous results on the classification of finite-dimensional Nichols algebras over dihedral groups and the characterization of simple modules of Drinfeld doubles, we compute the irreducible characters of the Drinfeld doubles of bosonizations of finite-dimensional Nichols algebras over the dihedral groups $\mathbb{D}_{4t}$ with $t\geq 3$. To this end, we develop new techniques that can be applied to Nichols algebras over any Hopf algebra. Namely, we explain how to construct recursively irreducible representations when the Nichols algebra is generated by a decomposable module, and show that the highest-weight of minimum degree in a Verma module determines its socle. We also prove that tensoring a simple module by a rigid simple module gives a semisimple module.
description: The paper is mostly self-contained and includes figures to lighten the reading. v2: The major changes are in Sections 3.2, 3.3, 4.4 and the beginning of 5. It is the final version accepted in Documenta Mathematica