cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Characterization and production optimization of a broad-spectrum bacteriocin produced by Lactobacillus casei KLDS 1.0338 and its application in soybean milk biopreservation
Creators: name: Ma, Jiage
name: Yu, Wei
name: Hou, Juncai
name: Han, Xiue
name: Shao, Hong
name: Liu, Ying
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: This study aimed at characterization, production optimization, and assessing the biopreservative potential of a broad antimicrobial spectrum bacteriocin produced by Lactobacillus casei KLDS 1.0338, isolated from fermented sourdough in Northeast region of China. Ammonium sulfate precipitation and SP SepharoseTM fast flow were adopted to purify the bacteriocin, which resulted in a 7.43-fold purification and its molecular mass was estimated as 6.8 kDa. The bacteriocin was active over a wide pH range (2.0–12.0) and 2–12% NaCl and was heat and cold resistant (121°C for 30 min, and −20°C for 30 days). Optimization of culture conditions by response surface methodology indicated that the bacteriocin production was significantly enhanced than that of control (P < 0.05). Moreover, the lyophilized antimicrobial substance inhibited the growth of Staphylococcus aureus and Penicillium sp. in fermented soybean milk during storage at 4°C for 21 days. These results demonstrated that the bacteriocin from L. casei KLDS 1.0338 is a potential candidate for controlling microbial contamination and extending the shelf life of food products.
title: An International Bottom Trawl Survey In The Mediterranean : The Medits Programme
Creators: name: Bertrand, Jacques
name: Sola, Luis Gil Oe
name: Papaconstantinou, Costas
name: Relini, Giulio
name: Souplet, Arnauld
Publisher: name: ASC 1997 - Y
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.An international bottom trawl survey (the MEO/TS programme) has been designed from aEuropean Commission's initiative to produce biological data on the demersal resources alongthe coasts of the four Mediterranean countries of the European Union (Spain, France, Italy andGreece). The main objective was to obtain independent knowledges useful for the fisherymanagement, in an area where it is difficult to follow in detail the exploitation patterns of thefishing fleets. The programme began in 1993 and, for now, four annual surveys have beenconducted. Since 1996, the programme covers almost all the Adriatic sea owing to theparticipation of scientists from the Balkan countries. Involving about twenty institutes andlaboratories from the seven participating countries, the programme is the first one whichproduces such common data at this scale in the Mediterranean, covering all the trawlableareas on the shelves and the upper slopes (at depths from 10 to 800 m) and using the samestandardized protoco/. During each survey, about one thousand hauls are carried out. At theend of each survey, all the data are combined and a working group produces standardizedanalyses on the abundance and the length distribution of around thirty reference species. Thedevelopment of further data analyses from the first four surveys (1994 to 1997) will be incitedthrough a symposium which will be held in 1998.
Senegal's Agricultural Economy in Brief
Creators: name: Skinner, Snider W.
name: Skinner, Snider W.
Publisher: name: Unknown
Year: 1966
Subjects: Agricultural and Food Policy
Crop Production/Industries
International Development
International Relations/Trade
Land Economics/Use
Livestock Production/Industries

description: Excerpts from the report: The average size of farm in Senegal is 9 acres, according to the 1960 Census of Agriculture of Senegal. This is two or three times as large as average farms in the rainforest areas of tropical Africa, due to greater ease of clearing land in Senegal and the greater use of animal power there. Not many Senegalese farmers raise both crops and livestock; in general, crops are grown by crop farmers and livestock kept by livestock farmers. Peanuts are Senegal's main crop. Senegal is the world's second largest exporter of peanuts (after Nigeria) and the fifth largest producer of peanuts (after India, Mainland China, Nigeria, and the United States). In certain special localities, Senegalese farmers are commercial vegetable farmers, supplying Dakar and even shipping some vegetables abroad. Those grown include cabbages, carrots, tomatoes, green salad vegetables, green beans, squashes, and others. Livestock raising is not yet on much of a commercial basis. However, some observers envisage Senegal as a great cattle-growing country, supplying meat to the northern and equatorial areas of Africa and perhaps even shipping meat to Europe and the Middle East.
On some extremalities in the approximate integration
Creators: name: Wasowicz, Szymon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D15, 41A55, 41A80 (Primary) 26A51, 65D30, 65D32 (Secondary)

description: Some extremalities for quadrature operators are proved for convex functions of higher order. Such results are known in the numerical analysis, however they are often proved under suitable differentiability assumptions. In our considerations we do not use any other assumptions apart from higher order convexity itself. The obtained inequalities refine the inequalities of Hadamard type. They are applied to give error bounds of quadrature operators under the assumptions weaker from the commonly used.
Coronal Hole Detection and Open Magnetic Flux
Creators: name: Linker, J. A.
name: Heinemann, S. G.
name: Temmer, M.
name: Owens, M. J.
name: Caplan, R. M.
name: Arge, C. N.
name: Asvestari, E.
name: Delouille, V.
name: Downs, C.
name: Hofmeister, S. J.
name: Jebaraj, I. C.
name: Madjarska, M.
name: Pinto, R.
name: Pomoell, J.
name: Samara, E.
name: Scolini, C.
name: Vrsnak, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Many scientists use coronal hole (CH) detections to infer open magnetic flux. Detection techniques differ in the areas that they assign as open, and may obtain different values for the open magnetic flux. We characterize the uncertainties of these methods, by applying six different detection methods to deduce the area and open flux of a near-disk center CH observed on 9/19/2010, and applying a single method to five different EUV filtergrams for this CH. Open flux was calculated using five different magnetic maps. The standard deviation (interpreted as the uncertainty) in the open flux estimate for this CH was about 26%. However, including the variability of different magnetic data sources, this uncertainty almost doubles to 45%. We use two of the methods to characterize the area and open flux for all CHs in this time period. We find that the open flux is greatly underestimated compared to values inferred from in-situ measurements (by 2.2-4 times). We also test our detection techniques on simulated emission images from a thermodynamic MHD model of the solar corona. We find that the methods overestimate the area and open flux in the simulated CH, but the average error in the flux is only about 7%. The full-Sun detections on the simulated corona underestimate the model open flux, but by factors well below what is needed to account for the missing flux in the observations. Under-detection of open flux in coronal holes likely contributes to the recognized deficit in solar open flux, but is unlikely to resolve it.
description: 28 pages, 10 figures, submitted to ApJ
S3: Side-Channel Attack on Stylus Pencil through Sensors
Creators: name: Farrukh, Habiba
name: Yang, Tinghan
name: Xu, Hanwen
name: Yin, Yuxuan
name: Wang, He
name: Celik, Z. Berkay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: With smart devices being an essential part of our everyday lives, unsupervised access to the mobile sensors' data can result in a multitude of side-channel attacks. In this paper, we study potential data leaks from Apple Pencil (2nd generation) supported by the Apple iPad Pro, the latest stylus pen which attaches to the iPad body magnetically for charging. We observe that the Pencil's body affects the magnetic readings sensed by the iPad's magnetometer when a user is using the Pencil. Therefore, we ask: Can we infer what a user is writing on the iPad screen with the Apple Pencil, given access to only the iPad's motion sensors' data? To answer this question, we present Side-channel attack on Stylus pencil through Sensors (S3), a system that identifies what a user is writing from motion sensor readings. We first use the sharp fluctuations in the motion sensors' data to determine when a user is writing on the iPad. We then introduce a high-dimensional particle filter to track the location and orientation of the Pencil during usage. Lastly, to guide particles, we build the Pencil's magnetic map serving as a bridge between the measured magnetic data and the Pencil location and orientation. We evaluate S3 with 10 subjects and demonstrate that we correctly identify 93.9%, 96%, 97.9%, and 93.33% of the letters, numbers, shapes, and words by only having access to the motion sensors' data.
description: 25 pages
Additional file 1: of Comparative analysis of sequencing technologies for single-cell transcriptomics
Creators: name: Natarajan, Kedar
name: Miao, Zhichao
name: Jiang, Miaomiao
name: Huang, Xiaoyun
name: Zhou, Hongpo
name: Xie, Jiarui
name: Wang, Chunqing
name: Qin, Shishang
name: Zhao, Zhikun
name: Wu, Liang
name: Yang, Naibo
name: Li, Bo
name: Hou, Yong
name: Liu, Shiping
name: Teichmann, Sarah
Publisher: name: figshare
Year: 2019
Subjects: Cell Biology
Molecular Biology
Biological Sciences not elsewhere classified
Developmental Biology
Hematology

description: Supplementary figures. (PDF 1140 kb)
Small deviations of stable processes and entropy of the associated random operators
Creators: name: Aurzada, Frank
name: Lifshits, Mikhail
name: Linde, Werner
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We investigate the relation between the small deviation problem for a symmetric $α$-stable random vector in a Banach space and the metric entropy properties of the operator generating it. This generalizes former results due to Li and Linde and to Aurzada. It is shown that this problem is related to the study of the entropy numbers of a certain random operator. In some cases, an interesting gap appears between the entropy of the original operator and that of the random operator generated by it. This phenomenon is studied thoroughly for diagonal operators. Basic ingredients here are techniques related to random partitions of the integers. The main result concerning metric entropy and small deviations allows us to determine or provide new estimates for the small deviation rate for several symmetric $α$-stable random processes, including unbounded Riemann--Liouville processes, weighted Riemann--Liouville processes and the ($d$-dimensional) $α$-stable sheet.
description: Published in at http://dx.doi.org/10.3150/09-BEJ212 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Measurement of the Atmospheric Muon Charge Ratio at TeV Energies with MINOS
Creators: name: MINOS Collaboration
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The 5.4 kton MINOS far detector has been taking charge-separated cosmic ray muon data since the beginning of August, 2003 at a depth of 2070 meters-water-equivalent in the Soudan Underground Laboratory, Minnesota, USA. The data with both forward and reversed magnetic field running configurations were combined to minimize systematic errors in the determination of the underground muon charge ratio. When averaged, two independent analyses find the charge ratio underground to be 1.374 +/- 0.004 (stat.) +0.012 -0.010(sys.). Using the map of the Soudan rock overburden, the muon momenta as measured underground were projected to the corresponding values at the surface in the energy range 1-7 TeV. Within this range of energies at the surface, the MINOS data are consistent with the charge ratio being energy independent at the two standard deviation level. When the MINOS results are compared with measurements at lower energies, a clear rise in the charge ratio in the energy range 0.3 -- 1.0 TeV is apparent. A qualitative model shows that the rise is consistent with an increasing contribution of kaon decays to the muon charge ratio.
description: 16 pages, 17 figures
Hermite-Hadamard-type inequalities in the approximate integration
Creators: name: Wasowicz, Szymon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D15, 41A80, 65D32 (Primary) 15A63, 26B25, 39B62 (Secondary)

description: We give a slight extension of the Hermite-Hadamard inequality on simplices and we use it to establish error bounds of the operators connected with the approximate integration.
Quantum critical scaling behavior of deconfined spinons
Creators: name: Nogueira, Flavio S.
name: Kragset, Steinar
name: Sudbo, Asle
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform a renormalization group analysis of some important effective field theoretic models for deconfined spinons. We show that deconfined spinons are critical for an isotropic SU(N) Heisenberg antiferromagnet, if $N$ is large enough. We argue that nonperturbatively this result should persist down to N=2 and provide further evidence for the so called deconfined quantum criticality scenario. Deconfined spinons are also shown to be critical for the case describing a transition between quantum spin nematic and dimerized phases. On the other hand, the deconfined quantum criticality scenario is shown to fail for a class of easy-plane models. For the cases where deconfined quantum criticality occurs, we calculate the critical exponent $η$ for the decay of the two-spin correlation function to first-order in $ε=4-d$. We also note the scaling relation $η=d+2(1-ϕ/ν)$ connecting the exponent $η$ for the decay to the correlation length exponent $ν$ and the crossover exponent $ϕ$.
description: 4.1 pages, no figures, references added; Version accepted for publication in PRB (RC)
Higher order curvature corrections and holographic renormalization group flow
Creators: name: Ghodsi, Ahmad
name: Siahvoshan, Malihe
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the holographic renormalization group (RG) flow in the presence of higher-order curvature corrections to the $(d+1)$-dimensional Einstein-Hilbert (EH) action for an arbitrary interacting scalar matter field by using the superpotential approach. We find the critical points of the RG flow near the local minima and maxima of the potential and show the existence of the bounce solutions. In contrast to the EH gravity, regarding the values of couplings of the bulk theory, superpotential may have both upper and lower bounds. Moreover, the behavior of the RG flow controls by singular curves. This study may shed some light on how a c-function can exist in the presence of these corrections.
description: 33 pages, 4 figures
Separated cross sections in π^0 electroproduction at threshold at Q^2 = 0.05 GeV^2/c^2
Creators: name: Weis, M.
name: Bartsch, P.
name: Baumann, D.
name: Bermuth, J.
name: Bernstein, A. M.
name: Bohinc, K.
name: Böhm, R.
name: Ding, M.
name: Distler, M. O.
name: Ewald, I.
name: Friedrich, J. M.
name: Friedrich, J.
name: Kahrau, M.
name: Kohl, M.
name: Krygier, K. W.
name: Liesenfeld, A.
name: Merkel, H.
name: Merle, P.
name: Müller, U.
name: Neuhausen, R.
name: Pavan, M. M.
name: Pospischil, Th.
name: Potokar, M.
name: Rosner, G.
name: Schmieden, H.
name: Seimetz, M.
name: Širca, S.
name: Wagner, A.
name: Walcher, Th.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The differential cross sections σ_0=σ_T+εσ_L, σ_{LT}, and σ_{TT} of π^0 electroproduction from the proton were measured from threshold up to an additional center of mass energy of 40 MeV, at a value of the photon four-momentum transfer of Q^2= 0.05 GeV^2/c^2 and a center of mass angle of θ=90^\circ. By an additional out-of-plane measurement with polarized electrons σ_{LT'} was determined. This showed for the first time the cusp effect above the π^+ threshold in the imaginary part of the s-wave. The predictions of Heavy Baryon Chiral Perturbation Theory are in disagreement with these data. On the other hand, the data are somewhat better predicted by the MAID phenomenological model and are in good agreement with the dynamical model DMT.
description: 6 pages, 4 figures
Ammonia gas dynamics in four Vancouver area landfills
Creators: name: Miller, Bradford Hale
Publisher: name: University of British Columbia
Year: 2010

description: A nine month field and laboratory study was undertaken to measure, predict and model the variation of detected ammonia concentrations in landfill gas. An additional side study attempted to characterize organic trace contaminants found in landfill gas. The field project consisted of biweekly sampling of gas extraction wells from four Vancouver-area landfills for the analysis of NH₃-N in the gas and leachate. Methane and other common landfill gases were also analyzed. The wet chemical boric-acid sampling technique used in this study was estimated to have a ammonia gas recovery efficiency of 50 %. Other than a low recovery efficiency, problems encountered with this sampling technique was the high humidity and negative interferences inherent in the landfill gas. Laboratory analysis of the collected NH₃-N gas samples was by the automated phenate method, which could detect NH₃-N gas concentrations greater than 10 ppb. The NH₃-N concentrations in gas were found to exceed 600 ppb, but were more commonly in the 50 to 200 ppb range. In the statistical and graphical analysis, gas temperature and precipitation were found to correlate the most to the variation in ammonia gas concentration, while leachate ionic strength correlated strongest with most CH₄ % analysis. Prediction of both NH₃-N gas and CH₄ % by regression analysis was found to be suspect due to low R² values and non-normality of some data. Four different Henry's Law constants of ammonia gas were evaluated to help predict the concentration of NH₃-N in the gas phase. The combination of already measured NH₃-N leachate concentrations and Henry's Law constants yielded results that over and underpredicted measured NH₃-N gas data by 2000 fold or more. This leads the author to believe Henry's Law may not be applicable in a landfill environment due to non-equilibrium conditions coupling with various other reaction mechanisms. Comparison of landfill ammonia gas flux rates with total ammonia leachate flux rates in two of the four landfills yielded an insignificant gas flux rate of less than 0.03 % of the total leachate NH₃-N fluxes. The NH₃-N gas flux results were calculated from a spreadsheet emission model employing both convection and diffusion flow through the landfill cover. A comparison of the emission model results for the 20 ha Richmond landfill study area (3.862 kg/yr) compared favorably to the mass flux results determined from a simple gas generation mass balance model.
Evidences for two scales in hadrons
Creators: name: Kopeliovich, B. Z.
name: Potashnikova, I. K.
name: Povh, B.
name: Schmidt, Ivan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Some unusual features observed in hadronic collisions at high energies can be understood assuming that gluons in hadrons are located within small spots occupying only about 10% of the hadron's area. Such a conjecture about the presence of two scales in hadrons helps to explain: why diffractive gluon radiation so much suppressed; why the triple-Pomeron coupling shows no t-dependence; why total hadronic cross sections rise with energy so slowly; why diffraction cone shrinks so slowly, and why $α^\prime_P\llα^\prime_R$; why the transition from hard to soft regimes in the structure functions occurs at rather large $Q^2$; why the observed Cronin effect at collider energies is so weak; why hard reactions sensitive to primordial parton motion (direct photon, Drell-Yan dileptons, heavy flavors, back-to-back di-hadrons, seagull effect, etc.) demand such a large transverse momenta of the projectile partons, which is not explained by NLO calculations; why the onset of nuclear shadowing for gluons is so much delayed compared to quarks, and why shadowing is so weak.
description: 15 pages, 15 figures
title: Report On Surveys Of The Distribution, Abundance And Migrations Of The Norwegian Spring-Spawning Herring, Other Pelagic Fish And The Environment Of The Norwegian Sea And Adjacent Waters In Late Winter, Spring And Summer Of 1997
Creators: name: Vilhjalmsson, Hjalmar
name: Misund, Ole Arve
name: Arrhenius, Fredrik
name: Holst, Jens Christian
name: Gislason, Astthor
name: Gudmundsdottir, Asta
name: Jacobsen, Jan Arge
name: Krysov, Alexander
name: Malmberg, Svend Aage
name: Reid, Dave
Publisher: name: ASC 1997 - Y
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.The distribution and migrations of Norwegian spring spawning herring in the Norwegian Sea inthe spring and swnmer of 1997 were mapped during 11 coordinated surveys carried out byFaroese, Icelandic, Norwegian, Russian and EU research vessels.
The $P$-wave charmonium annihilation into two photons $χ_{c0, c2}\rightarrow γγ$ with high-order QCD corrections
Creators: name: Zhou, Hua
name: Yu, Qing
name: Huang, Xu-Dong
name: Zheng, Xu-Chang
name: Wu, Xing-Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we present a new analysis on the $P$-wave charmonium annihilation into two photons up to next-to-next-to-leading order (NNLO) QCD corrections by using the principle of maximum conformality (PMC). The conventional perturbative QCD prediction shows strong scale dependence and deviates largely from the BESIII measurements. After applying the PMC, we obtain a more precise scale-invariant pQCD prediction, which also agrees with the BESIII measurements within errors, i.e. $R={Γ_{γγ}(χ_{c2})} /{Γ_{γγ}(χ_{c0})}=0.246\pm0.013$, where the error is for $Δα_s(M_τ)=\pm0.016$. By further considering the color-octet contributions, even the central value can be in agreement with the data. This shows the importance of a correct scale-setting approach. We also give a prediction for the ratio involving $χ_{b0, b2} \toγγ$, which could be tested in future Belle II experiment.
Regional active contours based on variational level sets and machine learning for image segmentation
Creators: name: Abdelsamea, Mohammed
Publisher: name: IMT Alti Studi Lucca
Year: 2015
Subjects: QA75 Electronic computers. Computer science

description: Image segmentation is the problem of partitioning an image into different subsets, where each subset may have a different
characterization in terms of color, intensity, texture, and/or other features. Segmentation is a fundamental component of image processing, and plays a significant
role in computer vision, object recognition, and object tracking. Active Contour Models (ACMs) constitute a powerful energy-based minimization framework for image
segmentation, which relies on the concept of contour evolution. Starting from an initial guess, the contour is evolved with the aim of approximating better and
better the actual object boundary. Handling complex images in an efficient, effective, and robust way is a real challenge, especially in the presence of intensity
inhomogeneity, overlap between the foreground/background intensity distributions, objects characterized by many different intensities, and/or additive noise.
In this thesis, to deal with these challenges, we propose a number of image segmentation models relying on variational level set methods and specific kinds of
neural networks, to handle complex images in both supervised and unsupervised ways. Experimental results demonstrate the high accuracy of the segmentation
results, obtained by the proposed models on various benchmark synthetic and real images compared with state-of-the-art active contour models.
Black Hole Thermodynamics and Lorentz Symmetry
Creators: name: Jacobson, Ted
name: Wall, Aron C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent developments point to a breakdown in the generalized second law of thermodynamics for theories with Lorentz symmetry violation. It appears possible to construct a perpetual motion machine of the second kind in such theories, using a black hole to catalyze the conversion of heat to work. Here we describe and extend the arguments leading to that conclusion. We suggest the inference that local Lorentz symmetry may be an emergent property of the macroscopic world with origins in a microscopic second law of causal horizon thermodynamics.
description: 4 pages; v2: Version to appear in Foundations of Physics. Potential counterexamples addressed, argument given applying to LV theories where all speeds (or horizons) coincide, and editing for clarity
title: The Data Correlation Of The Acoustic And Bottom Trawl Surveys Of The Bering Sea Walleye Pollock
Creators: name: W.D.Tesler
name: S.M.Goncharov
name: E.A.Karpenko
Publisher: name: ASC 1997 - Y
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.The surveys were conducted simultaneously in the same area of the west part ofBering Sea near cape Navarin from 28 July to 3 August 1996. Acoustic data werecollected in the whole water column using EY500 Simrad echo sounder. Bottom trawlvertical opening was 5 m, horizontal - 34 m, time of trawling - 30 min.
Selective opposition-like control of large-scale structures in wall-bounded turbulence
Creators: name: Ibrahim, JI
name: Guseva, A
name: Garcia Mayoral, Ricardo
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Paper

description: Abstract We investigate the effect of controlling large-scale, logarithmic-layer turbulent structures, which have a characteristic size and aspect ratio that scale with the distance from the wall. The aim is to quantify the effect of suppressing these structures while leaving the near-wall turbulent dynamics unaltered. By affecting only the logarithmic-layer structures, it might be possible to isolate their contribution to the drag from that of the other scales in the flow. We conduct direct numerical simulations of turbulent channel flows at friction Reynolds number ReT ?s 500-1000 and artificially remove certain streamwise and spanwise wavelengths of the wall-normal velocity across a range of heights. The wavelengths chosen depend on the target height (and size) of the structures that we wish to target. When these wavelengths are removed, we observe a positive, outward shift of the mean velocity profile above the target height, due to a local reduction in Reynolds shear stress, and a subsequent increase in viscous stress. Our preliminary results suggest that this shift in the mean velocity profile scales in outer units.
title: Preliminary Results From The Joint Sardine (Sardina Pilchardus) Depm And Acoustic Surveys In ICES Division Ixa (Lat. 41° 50'N, 36° 00'N)
Creators: name: Cunha, M.E.
name: Marques, V.
name: Soares, E.
name: Farinha, A.
Publisher: name: ASC 1997 - Y
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Spatial distribution and abundance estimates of sardine eggs and adults off the Portuguese coast andGulf of Cadiz. during March 1997 were obtained during joint cruises by the Portuguese research vessels,'Noruega' and 'Capric6rnio', in order to apply the Daily Egg Production Method (DEPM) and AcousticEcho-integration to evaluate the sardine biomass in the area. Daily egg production in the area was 4.14*1012eggs while the daily specific fecundity was 26.178* 106 eggs. Preliminary estimates of spawning stockbiomaSs in the surveyed area were 471 831 tonnes (echo-integration survey) and 168 258 tonnes (DEPMsurvey). The discrepancy between the two estimates may be due to a daily specific fecundity value that wasestimated using values ofbatch fecundity and spawning frequency from the literature.
MOESM1 of A lightweight sensing platform for monitoring sleep quality and posture: a simulated validation study
Creators: name: Kwasnicki, Richard
name: Cross, George
name: Geoghegan, Luke
name: Zhang, Zhiqiang
name: Reilly, Peter
name: Darzi, Ara
name: Yang, Guang
name: Emery, Roger
Publisher: name: figshare
Year: 2018
Subjects: Space Science
Medicine
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Science Policy

description: Additional file 1. Posture classification algorithm. (A) The main part of the algorithm that runs in MATLABÂŽ used to determine posture classification. (B) A brief mechanistic overview of the algorithm.
Characterizing the Multi-Phase Origin of [CII] Emission in M101 and NGC 6946 with Velocity Resolved Spectroscopy
Creators: name: Tarantino, Elizabeth
name: Bolatto, Alberto D.
name: Herrera-Camus, Rodrigo
name: Harris, Andrew I.
name: Wolfire, Mark
name: Buchbender, Christof
name: Croxall, Kevin V.
name: Dale, Daniel A.
name: Groves, Brent
name: Levy, Rebecca C.
name: Riquelme, Denise
name: Smith, J. D. T.
name: Stutzki, Jürgen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The [CII] fine-structure transition at 158 micron is frequently the brightest far-infrared line in galaxies. Due to its low ionization potential, C+ can trace the ionized, atomic, and molecular phases of the ISM. We present velocity resolved [CII] and [NII] pointed observations from SOFIA/GREAT on ~500 pc scales in the nearby galaxies M101 and NGC 6946 and investigate the multi-phase origin of [CII] emission over a range of environments. We show that ionized gas makes a negligible contribution to the [CII] emission in these positions using [NII] observations. We spectrally decompose the [CII] emission into components associated with the molecular and atomic phases using existing CO(2-1) and HI data and show that a peak signal-to-noise ratio of 10-15 is necessary for a reliable decomposition. In general, we find that in our pointings greater than or equal to 50% of the [CII] emission arises from the atomic phase, with no strong dependence on star formation rate, metallicity, or galactocentric radius. We do find a difference between pointings in these two galaxies, where locations in NGC 6946 tend to have larger fractions of [CII] emission associated with the molecular phase than in M101. We also find a weak but consistent trend for fainter [CII] emission to exhibit a larger contribution from the atomic medium. We compute the thermal pressure of the cold neutral medium through the [CII] cooling function and find log(P_th/k)=3.8-4.6 [K cm^-3], a value slightly higher than similar determinations, likely because our observations are biased towards star-forming regions.
description: 23 pages, 11 figures, 4 tables, accepted to The Astrophysical Journal
Electroplating of conformal electrodes for vacuum nanogap tunnel junction
Creators: name: Jangidze, Larissa
name: Tavkhelidze, Avto
name: Blagidze, Yujin
name: Taliashvili, Zaza
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this study, we electroplate Cu electrode on Si substrate to realize a large-area vacuum nanogap for electron tunneling. We used cathode coating, cathode rotation, asymmetric current regime, and electrolyte temperature stabilization to obtain the regular geometry of the Cu electrode and reduce its internal tension. Subsequently, internal tension was altered to achieve the predefined surface curvature (concave or convex). For 12-mm diameter Ag/Cu electrode, we achieve the curvature of 40 nm/mm from the Ag side. Reduction of the electrode diameter to 3 mm allowed curvature as low as of 2.5 nm/mm. It also allowed fabrication of two conformal electrodes having a nanogap of less than 5 nm wide, over the area of 7 mm2. Such electrodes can be used for efficient energy conversion and cooling in the mixed thermionic and thermotunneling regime.
description: 7 pages, 7 figures, 5 tables
Transcriptional regulation of telomeric repeat-containing RNA by acridine derivatives
Creators: name: Kang, Shuangshuang
name: Cao, Jiaojiao
name: Zhang, Meiling
name: Li, Xiaoya
name: Guo, Qian-Liang
name: Zeng, Huang
name: Wei, Zuzhuang
name: Gong, Xue
name: Wang, Jing
name: Liu, Bobo
name: Shu, Bing
name: Xu, Xiaoli
name: Huang, Zhi-Shu
name: Li, Ding
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Cancer
subject: Computational Biology

description: Telomere is a specialized DNA–protein complex that plays an important role in maintaining chromosomal integrity. Shelterin is a protein complex formed by six different proteins, with telomeric repeat factors 1 (TRF1) and 2 (TRF2) binding to double-strand telomeric DNA. Telomeric DNA consists of complementary G-rich and C-rich repeats, which could form G-quadruplex and intercalated motif (i-motif), respectively, during cell cycle. Its G-rich transcription product, telomeric repeat-containing RNA (TERRA), is essential for telomere stability and heterochromatin formation. After extensive screening, we found that acridine derivative 2c and acridine dimer DI26 could selectively interact with TRF1 and telomeric i-motif, respectively. Compound 2c blocked the binding of TRF1 with telomeric duplex DNA, resulting in up-regulation of TERRA. Accumulated TERRA could bind with TRF1 at its allosteric site and further destabilize its binding with telomeric DNA. In contrast, DI26 could destabilize telomeric i-motif, resulting in down-regulation of TERRA. Both compounds exhibited anti-tumour activity for A549 cells, but induced different DNA damage pathways. Compound 2c significantly suppressed tumour growth in A549 xenograft mouse model. The function of telomeric i-motif structure was first studied with a selective binding ligand, which could play an important role in regulating TERRA transcription. Our results showed that appropriate level of TERRA transcript could be important for stability of telomere, and acridine derivatives could be further developed as anti-cancer agents targeting telomere. This research increased understanding for biological roles of telomeric i-motif, TRF1 and TERRA, as potential anti-cancer drug targets.
Neutron star asteroseismology and nuclear saturation parameter
Creators: name: Sotani, Hajime
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Adopting various unified equations of state (EOSs), we examine the quasinormal modes of gravitational waves from cold neutron stars. We focus on the fundamental ($f$-), 1st pressure ($p_1$-), and 1st spacetime ($w_1$-) modes, and derive the empirical formulae for the frequencies and damping rate of those modes. With the resultant empirical formulae, we find that the value of $η$, which is a specific combination of the nuclear saturation parameters, can be estimated within $\sim 30 \%$ accuracy, if the $f$-mode frequency from the neutron star whose mass is known would be observed or if the $f$- and $p_1$-mode frequencies would be simultaneously observed, even though this estimation is applicable only for the low-mass neutron stars. Additionally, we find that the mass and radius of canonical neutron stars can be estimated within a few per cent accuracy via the simultaneous observations of the $f$- and $w_1$-mode frequencies. We also find that, if the $f$-, $p_1$-, and $w_1$-mode frequencies would be simultaneously observed, the mass of canonical neutron stars can be estimated within $2\%$ accuracy, while the radius can be estimated within $1\%$ for the neutron star with $M\ge 1.6M_\odot$ or within $0.6\%$ for the neutron star with $M\ge 1.4M_\odot$ constructed with the EOS constrained via the GW170817 event. Furthermore, we find the strong correlation between the maximum $f$-mode frequency and the neutron star radius with the maximum mass, between the minimum $w_1$-mode frequency and the maximum mass, and between the minimum damping rate of the $w_1$-mode and the stellar compactness for the neutron star with the maximum mass.
description: accepted for publication in PRD. arXiv admin note: text overlap with arXiv:2011.03167
Trapped-flux magnets characterization for application in synchronous machines
Creators: name: Climente-Alarcon, V
name: Smara, A
name: Mineev, N
name: Tomkow, Lukasz
name: Glowacki, Bartek
name: Reis, T
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Paper

description: Abstract Trapped-flux magnets comprising stacked superconducting tape constitute a promising development to increase the power density of electrical machines, whilst at the same time keeping the complexity required in their construction in manageable levels that allow their use in applications such as aircraft propulsion. However, the conditions in which superconducting stacks operate inside an electrical motor differ quite significantly from the materials characterization experiments commonly developed to model their behaviour. This work presents the results of studying the applicability of these devices as magnetic flux source in the rotor of synchronous machines considering the influence of whole magnetic circuit. Several aspects are assessed, such as flux harmonics, magnetization, losses and demagnetization. Analytical expressions, which provide limited accuracy but allow fast calculations, are used for this purpose. The results illustrate the different trade-offs that arise during the design of a synchronous electric motor using trapped-flux magnets.
Field dependent quasiparticles in a strongly correlated local system II
Creators: name: Bauer, J.
name: Hewson, A. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We extend the renormalized quasiparticle description of the symmetric Anderson model in a magnetic field $H$, developed in earlier work, to the non-symmetric model. The renormalized parameters are deduced from the low energy NRG fixed point for arbitrary field values. We find quasiparticle resonance widths, $\tildeΔ_σ(H)$, which depend in general on the spin $σ$ as well as $H$. The low temperature static properties can be expressed completely in terms of these parameters, which can also be used as inputs for a renormalized perturbation theory. We show that taking into account repeated quasiparticle scattering gives results for the longitudinal and transverse dynamic spin susceptibilities which are in very good agreement with those obtained from direct NRG calculations.
description: 7 pages, 9 figures
title: Evaluation Of Tbe Norwegian Shrimp Surveys Conducted In The Barents Sea And The Svalbard Area 1980-1997
Creators: name: Aschan, Michaela
name: Sunnanå, Knut
Publisher: name: ASC 1997 - Y
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Trawl surveys tor shrimp (Pandalus borealis ) have been conducted annuaIly in the BarentsSea arid the Svalbard area since 1980 by. Norwegian research institutes. The surveys have beenconducted in the period April to September for a duration of 25 to 97 days each year. Until1992 the Institute of Marine Research in Bergen (IMR) carried out the investigations andthereafter the Norwegian Institute of Fisheries and Aquaculture Ltd. (Fiskeriforskning) in .Tromsø has been doing the work. All together four different vessels have been llsed
Modeling polymerization of microtubules: a quantum mechanical approach
Creators: name: Rezania, Vahid
name: Tuszynski, Jack
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biomolecules (q-bio.BM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: In this paper a quantum mechanical description of the assembly/disassembly process for microtubules is proposed. We introduce creation and annihilation operators that raise or lower the microtubule length by a tubulin layer. Following that, the Hamiltonian and corresponding equations of motion for the quantum fields are derived that describe the dynamics of microtubules. These Heisenberg-type equations are then transformed to semi-classical equations using the method of coherent structures. We find that the dynamics of a microtubule can be mathematically expressed via a cubic-quintic nonlinear Schrödinger (NLS) equation. We show that a vortex filament, a generic solution of the NLS equation, exhibits linear growth/shrinkage in time as well as temporal fluctuations about some mean value which is qualitatively similar to the dynamic instability of microtubules.
description: 19 pages, 1 figure
Frequency-dependent demagnetisation rate of a shielded HTS tape stack
Creators: name: Tomkow, Lukasz
name: Climente-Alarcon, V
name: Mineev, N
name: Smara, A
name: Glowacki, Bartek
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Paper

description: Abstract This work presents results of investigation of crossed-field demagnetization in 2G high temperature superconducting stacks at temperatures in the range of 77 - 20 K and in a variable frequency, corresponding to the particular rotor application. We propose a method to reduce the demagnetization rate for a given stack configuration necessary for the superconducting rotor operating at a cryogenic temperature. This technique involves 3-D wrapping the stack of tapes with perpendicular layers of similar superconducting properties. Previous ‘proof of concept’ studies documented some improvements in flux demagnetisation reduction for basic configuration. In the present study a more advanced approach based on magnetic flux shielding is adopted. The presented results provide an important contribution to development for design solutions that aim to increase the operational time before remagnetisation of the stacks would be required.
Assessing the stellar population and the environment of an HII region on the far side of the Galaxy
Creators: name: Chené, A. -N.
name: Benjamin, R. A.
name: Alegría, S. Ramírez
name: Borissova, J.
name: Kurtev, R.
name: Bidin, C. Moni
name: Mauro, F.
name: Lucas, P.
name: Guo, Z.
name: Smith, L. C.
name: Gonzalez-Fernandez, C.
name: Ivanov, V. D.
name: Minniti, D.
name: Anderson, L. D.
name: Armentrout, W. P.
name: Gonzalez, D.
name: Herrero, A.
name: Ramírez, K. Peña
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE HII region GAL 007.47+0.06). It is associated to a water maser, whose parallax distance is d=20.4^{+2.8} {-2.2} kpc, supported by independent measurements of proper motion and radial velocity. It is projected in the same direction as an extremely red (J-Ks ~ 6 mag) group of stars, and a shell of mid-infrared emission. We qualify the group of stars as a cluster candidate, VVV CL177. Its radius spans between 0.45' and 1' and contains at least two young stellar objects with an extreme extinction near Av ~ 40 mag. Yet more analysis will be required to determine is it is a real single cluster associated with the water maser. The 13CO emissions at the radial velocity of the maser corresponds to the mid-infrared emission.
description: 10 pages, 5 figures, accepted for publication in ApJ
title: Groundfish Surveys In Tue Atlantic Waters (ICES Divisions Viiic And Ixa): History And Perspectives
Creators: name: Cardador, F.
name: Sanchez, F.
Publisher: name: ASC 1997 - Y
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Spanish Oceanographic Institute (IEO) and Portuguese Research lnstitute (lPIMAR, ex-INIP)using their research vessels 'Comide de Saavedra' and ''Noruega'' have conducted groundfishsurveys in Spanish and Portuguese waters.
Teichmüller Structures and Dual Geometric Gibbs Type Measure Theory for Continuous Potentials
Creators: name: Jiang, Yunping
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary 37D53, 30F60, Secondary 37F10, 30C62

description: The Gibbs measure theory for smooth potentials is an old and beautiful subject and has many important applications in modern dynamical systems. For continuous potentials, it is impossible to have such a theory in general. However, we develop a dual geometric Gibbs type measure theory for certain continuous potentials in this paper following some ideas and techniques from Teichmüller theory for Riemann surfaces. Furthermore, we prove that the space of those continuous potentials has a Teichmüller structure. Moreover, this Teichmüller structure is a complete structure and is the completion of the space of smooth potentials under this Teichmüller structure. Thus our dual geometric Gibbs type theory is the completion of the Gibbs measure theory for smooth potentials from the dual geometric point of view.
Production of bio-based chemicals from pineapple processing wastes.
Creators: name: Shivali Banerjee
Publisher: name: Monash University
Year: 2021
Subjects: subject: Environmental Chemistry
subject: 30504 Organic Green Chemistry
subject: FOS: Chemical sciences
subject: 30403 Characterisation of Biological Macromolecules

description: This thesis represents that pineapple processing waste provides an excellent opportunity to recover and produce valuable bio-based chemicals as a part of a biorefinery product portfolio. The current work highlights the scope and breadth of opportunity including scientific challenges that need to be addressed in valorising pineapple processing wastes. A techno-economic model is further developed to assess the economic feasibility of a biorefinery based on pineapple processing wastes. Such an integrated approach in utilizing this organic waste will establish a circular economy and diversify the market of bio-based products and chemicals.