cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the Dynamic Stability of Cool Supergiant Atmospheres
Creators: name: Lobel, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have developed a new formalism to compute the thermodynamic coefficient Gamma1 in the theory of stellar and atmospheric stability. We generalize the classical derivation of the first adiabatic index, which is based on the assumption of thermal ionization and equilibrium between gas and radiation temperature, towards an expression which incorporates photo-ionization due to radiation with a temperature T_rad different from the local kinetic gas temperature.Our formalism considers the important non-LTE conditions in the extended atmospheres of supergiant stars. An application to the Kurucz grid of cool supergiant atmospheres demonstrates that models with T_rad =~ T_eff between 6500 K and 7500 K become most unstable against dynamic perturbations, according to Ledoux' stability integral . This results from Gamma1 and acquiring very low values, below 4/3, throughout the entire stellar atmosphere, which causes very high gas compression ratios around these effective temperatures. Based on detailed NLTE-calculations, we discuss atmospheric instability of pulsating massive yellow supergiants, like the hypergiant rho Cas (Ia+), which exist in the extension of the Cepheid instability strip, near the Eddington luminosity limit.
description: 54 pages including figures and the Appendix, 7 figures, Accepted for The Astrophysical Journal, Main Journal, 558, Sept. 2001
Gonzalo Villalta Puig, Economic Relations between Australia and the European Union: Law and Policy (Kluwer Law International, 2014)
Creators: name: Longo, Michael
Publisher: name: Monash University
Year: 2019
Subjects: subject: Law
subject: FOS: Law

description: This content was published in the Monash University Law Review, the flagship academic journal of Monash Law School, managed by a team of student editors.
Disruption of trehalose production in Escherichia coli K-12 does not confer sensitivity to SDS-EDTA-induced outer membrane stress
Creators: name: Gutierrez, Mackenzie W
name: Neufeld, Laurel M
name: Wei, Xin
name: Yin, Yi Han
Publisher: name: Undergraduate Journal of Experimental Microbiology and Immunology
Year: 2020

description: Trehalose, a glucose disaccharide, has been reported to play a role in stabilizing the cell envelope of Escherichia coli under numerous forms of abiotic stress. The exact manner by which trehalose contributes to this stability remains under investigation, though a recent paper suggested that it stabilizes the outer membrane component of the cell envelope in response to a variety of environmental stressors, including the presence of SDS and EDTA. We sought to validate these findings with a more robust approach to the SDS-EDTA assay. A key enzyme in the biosynthetic pathway of trehalose is OtsA, a trehalose-6-phosphate synthase, as otsA mutants are unable to synthesize trehalose. We hypothesized that otsA deletion mutants would be hindered in their ability to stabilize the outer membrane, increasing their susceptibility to SDS-EDTA-induced stress. To test this hypothesis, we performed basal growth rate analyses and SDS-EDTA assays. We report that mutants with a disrupted trehalose biosynthesis pathway were not more sensitive to either form of membrane stress (SDS or EDTA) relative to the wild type. These findings suggest that trehalose may not promote outer membrane stability of E. coli during SDS-EDTA stress.
description: Undergraduate Journal of Experimental Microbiology and Immunology, Vol. 6 (2020): Undergraduate Journal of Experimental Microbiology and Immunology (UJEMI+)
Investigation of outer membrane porin OmpC mutation mediated relationship between Cefotaxime antibiotic resistance and T4 phage resistance in Escherichia coli
Creators: name: Hakkinen, Elmeri
name: Li, Daisy
name: Mslati, Ahmad
Publisher: name: Undergraduate Journal of Experimental Microbiology and Immunology
Year: 2020

description: Outer membrane porin C (OmpC) is a protein porin found on the outer membrane of Gram-negative bacteria. In Escherichia coli, OmpC allows entry of hydrophilic molecules in to the cell, including cefotaxime (CTX), a cephalosporin antibiotic. Previous research has shown that clinical isolates of multidrug resistant E. coli with mutations in OmpC have increased resistance to cefotaxime. Research has also shown OmpC as a necessary receptor for T4 bacteriophage entry. Due to their mutual dependence on OmpC for entry, we hypothesize that exposure to cefotaxime would select for OmpC mutations that also confer resistance to T4 phage in E. coli BW25113. To test this, we first used a minimum inhibitory concentration (MIC) assay to confirm that deletion of ompC increased E. coli resistance to cefotaxime. With validation of this phenotypic difference, we selected for strains that showed comparable antibiotic resistance to the knockout via sequential passaging of E. coli BW25113 in increasing cefotaxime concentrations. When we subjected these resistant cultures to T4 phage, we saw trends suggesting decreased and delayed lysis as predicted. To confirm that OmpC was indeed the target of selection, we sequenced the ompC gene from these double resistant isolates and found consistent insertion mutations in a number of the isolates. The insertion was predicted to encode an α-helical motif protruding into the channel. This paper addresses the relationship between antibiotics and bacteriophage, an under-researched area in clinical microbiology, and holds implications for how we approach antibiotic therapy and multidrug resistant bacteria.
description: Undergraduate Journal of Experimental Microbiology and Immunology, Vol. 25 (2020): Undergraduate Journal of Experimental Microbiology and Immunology (UJEMI)
Single-photon emission from InGaAs quantum dots grown on (111) GaAs
Creators: name: Stock, Erik
name: Warming, Till
name: Ostapenko, Irina
name: Rodt, Sven
name: Schliwa, Andrei
name: Töfflinger, Jan Amaru
name: Lochmann, Anatol
name: Toropov, Aleksandr I.
name: Moshchenko, Sergej A.
name: Dmitriev, Dimitry V.
name: Haisler, Vladimir A.
name: Bimberg, Dieter
Publisher: name: Technische Universität Berlin
Year: 2010
Subjects: subject: 530 Physik
subject: quantum information
subject: monochromators
subject: excitons
subject: micro-photoluminescence
subject: photoelectric effect
subject: photonic entanglement
subject: quantum dots
subject: piezoelectricity
subject: self assembly
subject: spectroscopy

description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 96, 093112 (2010) and may be found at https://doi.org/10.1063/1.3337097.
description: In this letter, we demonstrate that self-organized InGaAs quantum dots (QDs) grown on GaAs (111) substrate using droplet epitaxy have great potential for the generation of entangled photon pairs. The QDs show spectrally sharp luminescence lines and low spatial density. A second order correlation value of g(2)(0)<0.3 proves single-photon emission. By comparing the power dependence of the luminescence from a number of QDs we identify a typical luminescence fingerprint. In polarization dependent microphotoluminescence studies a fine-structure splitting ranging ≤40𝜇eV down to the determination limit of our setup (10𝜇eV) was observed.
Review: Structure and regulation of the Acr efflux pumps and their role in antibiotic resistance in Escherichia coli
Creators: name: Bhandol, Harjot Jyoti
name: Alindogan, Jairah
name: De Guzman, Antyrah
name: Lim, Rebecca
Publisher: name: Undergraduate Journal of Experimental Microbiology and Immunology
Year: 2020

description: Multidrug resistance in Gram-negative bacterial pathogens is often mediated by efflux pumps that actively transport antibiotic compounds out of the cell. The AcrAB, AcrAD, and AcrEF proteins form such efflux pump complexes with the TolC protein, that confer resistance to a broad subset of antibiotics in Escherichia coli. In this review, we outline the genomic and protein structures and transcriptional regulation of AcrAB-TolC, AcrAD-TolC, and AcrEF-TolC. These tripartite systems are homologous, with differences in substrate specificity mainly attributed to the binding-site structure of their inner membrane transporters. On the genome, expression of the acrAB operon, acrD gene, and acrEF operon is modulated by multiple mechanisms, such as the local transcriptional repressors AcrS and AcrR, global transcriptional activators including regulators of the XylS/AraC family and H-NS, as well as transposable insertion elements IS186 and IS2. We conclude this review with a comparison of AcrS and AcrR regulation of the AcrAB, AcrAD, and AcrEF systems. We also discuss current knowledge gaps regarding the regulatory mechanisms that underlie Acr-mediated antibiotic resistance, particularly to kanamycin, that should be addressed in future studies.
description: Undergraduate Journal of Experimental Microbiology and Immunology, Vol. 6 (2020): Undergraduate Journal of Experimental Microbiology and Immunology (UJEMI+)
Abispa (Abispa) meadewaldoensis Perkins 1914
Creators: name: Carpenter, James M.
name: Brown, Graham R.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Vespidae
Abispa
Abispa meadewaldoensis

description: meadewaldoensis Perkins
Abispa meade-waldoensis Perkins 1914a: 623, sex not stated—“Port Darwin” (London, type no. 18238).—van der Vecht 1960: 96 (syn. or possible subspecies of A. ephippium (Fabricius)).— Matthews & Matthews 2004: 573–583, fig. 4 (meadewaldoensis; nest; W. A.: Kununurra).
Abispa ephippium meadewaldoensis; Borsato 1994 [1993]: 247 (colour distinct from typical form; N. T.: Kakadu N. P.); 1996: 214.
description: Published as part of Carpenter, James M. & Brown, Graham R., 2021, Catalogue of the Australian Eumeninae (Hymenoptera: Vespidae), pp. 1-68 in Zootaxa 4919 (1) on page 21, DOI: 10.11646/zootaxa.4919.1.1, http://zenodo.org/record/4473370
Is Judicial Consideration of Credibiltiy and Reliability under Section 137 of the Uniform Evidence Law a Guarantee of Fairness or 'Moral Treason'?
Creators: name: Adams, Michael WR
Publisher: name: Monash University
Year: 2019
Subjects: subject: Law
subject: FOS: Law

description: This article considers the operation of s 137 of the Uniform Evidence Law, which requires the exclusion of evidence that is more prejudicial than probative. The operation of this provision is contested by two recent decisions: Dupas v The Queen, delivered by the Victorian Court of Appeal, and R v XY, in which the New South Wales Court of Criminal Appeal largely endorsed its previous decision in R v Shamouil. These courts adopted different positions as to whether reliability should be considered when assessing the probative value of evidence. Both courts agreed that credibility should not be considered, for different reasons. The article emphasises that, like any statutory provision, s 137 must be understood in light of its purpose, and critically evaluates how these decisions have understood and applied the provision in light of that purpose. It is suggested that there are aspects of both decisions that will lead judges to misestimate the effect directions must have on evidence to render its prejudicial effects proportionate to its probative value.
Neutron star blackbody contraction during flaring in X1624-490
Creators: name: Balucinska-Church, M.
name: Barnard, R.
name: Church, M. J.
name: Smale, A. P.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of an investigation of the physical changes taking place in the emission regions of the LMXB X1624-490 during strong flaring in RXTE observations. Based on the detailed light curve, we propose that the flaring consists of a superposition of X-ray bursts. It is shown that major changes take place in the blackbody emission component, the temperature kT_BB increasing to ~2.2 keV in flaring. Remarkably, the blackbody area decreases by a factor of ~5 in flaring. During flare evolution, the blackbody luminosity remains approximately constant, constituting a previously unknown Eddington limiting effect which we propose is due to radiation pressure of the blackbody as kT_BB increases affecting the inner disk or accretion flow resulting in a decreased emitting area on the star. We argue that the large decrease in area cannot be explained in terms of modification of the blackbody spectrum by electron scattering in the atmosphere of the neutron star. The height of the emitting region on the non-flaring neutron star is shown to agree with the height of the inner radiatively-supported disk as found for sources in the ASCA survey of LMXB of Church & Balucinska-Church (2001). The decrease in height during flaring is discussed in terms of possible models, including radial accretion flow onto the stellar surface and the theory of accretion flow spreading on the neutron star surface of Inogamov & Sunyaev (1999). We demonstrate that the intensity of the broad iron line at 6.4 keV is strongly correlated with the luminosity of the blackbody emission from the neutron star, and discuss the probable origin of this line in the ADC. Finally, possible reasons for non-detection of a reflection component in this source, and LMXB in general, are discussed.
description: 14 pages including 11 figures, Astronomy and Astrophysics in press
Making Every Life Count: Ensuring Equality and Protection for Persons with Disabilities in Armed Conflicts
Creators: name: Hart, Naomi
Publisher: name: Monash University
Year: 2019
Subjects: subject: Law
subject: FOS: Law

description: This content was published in the Monash University Law Review, the flagship academic journal of Monash Law School, managed by a team of student editors.
Public Statements by Judges and the Bias Rule
Creators: name: Groves, Matthew
Publisher: name: Monash University
Year: 2019
Subjects: subject: Law
subject: FOS: Law

description: The rule against bias requires that judges approach their task with an open mind though not an empty one. The bias rule does not preclude judges from presiding simply because they have knowledge, experience or views relevant to a case. The question is always one of degree and context. This article examines how questions of bias may arise when judges make public statements outside their reasons for decisions, such as in media interviews, speeches or scholarly publications. It will argue that judges can and should make public statements but that the judicial function necessarily limits what judges can and should say in their public statements.
OMMAVIY AXBOROT VOSITALARINING INSON VA JAMIYAT HAYOTIDAGI TA’SIRI HAMDA AXBOROT XURUJLARI
Creators: name: Elbek Jabborov
name: Abduvali Lutfullayev
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Ommaviy axborot vositalari (televideniye
kompyuter
Internet
uyali telefon)
axborot
terroristik tashkilotlar

description: Ommaviy axborot vositalari eng asosiy, qudratli va ta‟sirchan mafkura vositasi ekenligi, oxirgi paytlarda informatsion hurujlarning tez-tez uyushtirilayotgani aslida urushga munosabatning o‟zgarganligidan, qurolning yangi turi kashf qilinganidan darak beradi. Bu qurol axborotdir. Bunday qurol yordamida olib boriladigan informatsion urushlarda insonning ongi va qalbi nishonga olinishi, internetdan foydalanish, bugungi kunda dunyoda terroristlar foydalanigan internet saytlar to„satdan paydo bo„lishi, axborot xurujlari hamda ularga qarshi kurashish yo‟llari haqida.
The stability in the most external region of the Oort Cloud: The evolution of the ejected comets
Creators: name: Correa-Otto, J. A.
name: Calandra, M. F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this paper, we present a study about the dynamical effects of the Galaxy on the external region of the Oort Cloud. The aims of this paper are: i) to determine an outer limit for the Oort Cloud; and ii) to analyse the dynamical behaviour of the most external objects of the Cloud and how they are ejected from the Solar System. This is undertaken by following the temporal evolution of massless test particles in the Galactic environment of the solar neighbourhood. Here we show that the effect of the perturbations from the Galactic tide in the particles is similar to that find for the evolution of wide binary stars population. Moreover, in the Oort Cloud we found a dynamical structure around 10 5 au conformed by objects unbound of the Sun. This structure allows us to define a transition region of stability and an outer boundary for the Oort Cloud, and it is also in agreement with previous results about the disruption of wide binary stars.
description: Accepted for publishing in MNRAS. 13 pages, 9 figures, 2 tables
Discretizations of the generalized AKNS scheme
Creators: name: Doikou, Anastasia
name: Sklaveniti, Spyridoula
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider space discretizations of the matrix Zakharov-Shabat AKNS scheme, in particular the discrete matrix non-linear Scrhrödinger (DNLS) model, and the matrix generalization of the Ablowitz-Ladik (AL) model, which is the more widely acknowledged discretization. We focus on the derivation of solutions via local Darboux transforms for both discretizations, and we derive novel solutions via generic solutions of the associated discrete linear equations. The continuum analogue is also discussed, and as an example we identify solutions of the matrix NLS equation in terms of the heat kernel. In this frame we also derive a discretization of the Burgers equation via the analogue of the Cole-Hopf transform. Using the basic Darboux transforms for each scheme we identify both matrix DNLS-like and AL hierarchies, i.e. we extract the associated Lax pairs, via the dressing process. We also discuss the global Darboux transform, which is the discrete analogue of the integral transform, through the discrete Gelfand-Levitan-Marchenko (GLM) equation. The derivation of the discrete matrix GLM equation and associated solutions are also presented together with explicit linearizations. Particular emphasis is given in the discretization schemes, i.e. forward/backward in the discrete matrix DNLS scheme versus symmetric in the discrete matrix AL model.
description: 28 pages, Latex. Typos corrected and clarifying comments added. Version accepted in J. Phys. A
Comparative expression of potato proteinase inhibitor type II in an oxidative versus reductive cytosolic environment of Escherichia coli
Creators: name: Grewal, Ravneet
name: Kim, Wee So
name: Shi, Dini
name: Tong, Haley
Publisher: name: Undergraduate Journal of Experimental Microbiology and Immunology
Year: 2020

description: Potato proteinase inhibitor type II (PI2) is an enzyme primarily expressed in potato tubers that suppresses the activity of serine proteases such as trypsin and chymotrypsin. PI2 is a disulfide-rich protein that requires an oxidative cytosolic redox state to allow for proper folding in Escherichia coli. In this paper, three different strains of E. coli, BL21 (DE3), SHuffle and Origami 2, were selected for their distinct cytosolic environments. BL21 (DE3) has a reducing cytosolic environment that is not conducive for disulfide bond formation, whereas Origami 2 and SHuffle have oxidative cytosolic environments that promote disulfide bond formation. The objective of this research project was to express and purify PI2 in the three strains of E. coli to compare protein folding of the purified product. Previously, PI2 was cloned into a vector containing a fusion of a maltose-binding protein tag to increase the solubility and to facilitate the purification through amylose affinity chromatography. In the present study, this vector was transformed into the three E. coli strains and the expression of PI2 was induced. PI2 was subsequently purified on an amylose column and the folded state of the purified protein was probed through a limited proteolysis assay. Results indicate that PI2 was expressed in BL21 and SHuffle, but not in Origami 2. However, purified MBP-PI2 protein was only obtained from SHuffle. Limited proteolysis of the purified protein showed that the PI2 purified from SHuffle may have been in the folded state. Therefore, this study demonstrates that PI2 can potentially be expressed in a native conformation in SHuffle.
description: Undergraduate Journal of Experimental Microbiology and Immunology, Vol. 6 (2020): Undergraduate Journal of Experimental Microbiology and Immunology (UJEMI+)
Grand-Canonical simulation of 4D simplicial quantum gravity
Creators: name: Horata, S.
name: Egawa, H. S.
name: Yukawa, T.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A thorough numerical examination for the field theory of 4D quantum gravity (QG) with a special emphasis on the conformal mode dependence has been studied. More clearly than before, we obtain the string susceptibility exponent of the partition function by using the Grand-Canonical Monte-Carlo method. Taking thorough care of the update method, the simulation is made for 4D Euclidean simplicial manifold coupled to $N_X$ scalar fields and $N_A$ U(1) gauge fields. The numerical results suggest that 4D simplicial quantum gravity (SQG) can be reached to the continuum theory of 4D QG. We discuss the significant property of 4D SQG.
description: 3 pages, 2 figures, LaTeX, Lattice2002(Gravity)
Abispa (Abispa) splendida subsp. splendida
Creators: name: Carpenter, James M.
name: Brown, Graham R.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Vespidae
Abispa
Abispa splendida
Splendida splendida (guérin-Méneville)

description: splendida splendida (Guérin-Méneville)
Odynerus splendidus Guérin-Méneville 1838: 265, female [male]—“ La Nouvelle Hollande ” (holotype male Leiden).— Guérin-Méneville & Percheron 1838: pl. 5 and 3 unnumbered pages of text.
Monorebia splendida; de Saussure 1852: 99, pl. XV fig. 8 (type is male not female; redescription; “ La Tasmanie ”).— Bequaert 1926a: 192 (list).
Abispa splendida; de Saussure 1855: 169 (female).— Smith 1857: 43 (cat.); 1873b: vii (mimicry).— Roth, 1885: 323, figs. 3A–C (nest).— Froggatt 1892: 228 (cat.).— Dalla Torre 1894: 42 (cat.).— Froggatt 1894: 29–30 (ethology; N. S. W.: Sydney, Wellington).— Dalla Torre 1904: 29 (cat.).—? du Buysson 1913 [1911]: 230 (Aru).— Iwata, 1942: 72, 101, 120 (ethology).— Brewster et al. 1946: 137–139 (ethology).—van der Vecht 1957: 26 (note on type).
Abispa splendida splendida; van der Vecht 1960: 96 (key), 98 (in subgenus Abispa, Qld.: Cooktown, Cairns, North Queensland).— Smith & Alcock 1980: 43, 53 (ethology; N. S. W.: Pearl Beach).— Cardale 1985: 161 (cat.).— Borsato 1996: 214 (N. S. W.).— Matthews & Matthews 2004: 573–583, fig. 1 (ethology; Qld.: Magnetic Island N. P.).
description: Published as part of Carpenter, James M. & Brown, Graham R., 2021, Catalogue of the Australian Eumeninae (Hymenoptera: Vespidae), pp. 1-68 in Zootaxa 4919 (1) on page 21, DOI: 10.11646/zootaxa.4919.1.1, http://zenodo.org/record/4473370
ТОШКЕНТ ВИЛОЯТИ САНОАТ ЭКОЛОГИЯСИНИНГ УМУМИЙ ТАВСИФИ
Creators: name: Дилфуза Махмудовна Дусмуродова
name: Муҳаммадисмоил Мухитдинович Маҳмудов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: саноат
экология
сув
ҳаво
тупроқ
корхона
кимѐ
газ
чанг
зарарли моддалар
завод
саноат зонаси
кластер
тоғ-кон
металлургия
атмосфера
ишлаб чиқариш
жойлаштириш

description: Ушбу мақолада Тошкент вилоятида саноат тармоқларини ривожланиши ҳамда корхоналарнинг ҳудудий жойлашувига умумий тавсиф берилган. Шунингдек, вилоятда саноат корхоналарини ҳудудий жойлашуви қонуниятлари очиб берилган. Вилоятдаги йирик саноат корхоналарининг минтақа экологияси, атроф-муҳит ҳамда инсон саломатлигига етказиши мумкин бўлган салбий оқибатларига тўхталиб ўтилган. Вилоят саноат экологиясига тавсиф беришда оғир саноат корхоналарининг атмосфера ҳавоси, сув, тупроқ, ўсимлик ва ҳайвонот дунѐсига таъсири атрофлича ѐритиб берилган
Spatially Resolved STIS Spectroscopy of alpha Orionis: Evidence for Non-radial Chromospheric Oscillation from Detailed Modeling
Creators: name: Lobel, A.
name: Dupree, A. K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Four spatially resolved near-UV raster scans across the chromospheric disk of alpha Ori, obtained with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, reveal mean chromospheric infall from 1998 January to 1998 April, which reversed to upflow in deeper layers between 1998 September and 1999 March. In 1998 September we detect systematic reversals in the component maxima of four double-peaked emission lines of Si I (UV 1), Fe II (UV 36), Fe II (UV 61), and Al II] (UV 1), when scanning across the UV disk. Detailed modeling of the Si I lambda 2516 resonance line with radiative transport calculations in spherical geometry constrain the mean radial velocity structure in the projected slit area (25 by 100 mas) for different aperture positions, observed off-limb to 157.5 mas. Hence we determine with semi-empirical models that these spatial reversals of emission line components correspond with average opposite flow velocities of ~2 km/s across the chromospheric disk. We determine that the chromospheric velocity field can not be represented by a unique radial velocity structure across the stellar disk in order to match the observed peak ratios of this raster scan. These sub-sonic velocities indicate (local) non-radial movements of chromospheric fluid in confined regions during a chromospheric oscillation phase, which reverses from global contraction into expansion over this monitoring period of 15 months.
description: 24 pages including 6 figures, to appear in The Astrophysical Journal, Main Journal, 558, Sept. 2001, for the related Press Release, see http://cfa-www.harvard.edu/cfa/ep/pressrel/alobel0100.html
A model for high-mass microquasar jets under the influence of a strong stellar wind
Creators: name: Molina, Edgar
name: del Palacio, Santiago
name: Bosch-Ramon, Valentí
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: High-mass microquasars (HMMQs) are systems from which relativistic jets are launched. At the scales of several times the binary system size, the jets are expected to follow a helical path caused by the interaction with a strong stellar wind and orbital motion. Such a trajectory has its influence on the non-thermal emission of the jets, which also depends strongly on the observing angle due to Doppler boosting effects. We explore how the expected non-thermal emission of HMMQ jets at small scales is affected by the impact of the stellar wind and the orbital motion on the jet propagation. We studied the broadband non-thermal emission, from radio to gamma rays, produced in HMMQ jets up to a distance of several orbital separations, taking into account a realistic jet trajectory, different model parameters, and orbital modulation. The jet trajectory is computed by considering momentum transfer with the stellar wind. Electrons are injected at the position where a recollimation shock in the jets is expected due to the wind impact. Their distribution along the jet path is obtained assuming local acceleration at the recollimation shock, and cooling via adiabatic, synchrotron, and inverse Compton processes. The synchrotron and inverse Compton emission is calculated taking into account synchrotron self-absorption within the jet, free-free absorption with the stellar wind, and absorption by stellar photons via pair production. Asymmetric light curves are obtained owing to the helical trajectory of the jets. The presence of helical shaped jets could be inferred from asymmetries in the light curves, which become noticeable only for large jet Lorentz factors and low magnetic fields. Model parameters could be constrained if accurate phase-resolved light curves from GeV to TeV energies were available.
description: 11 pages, 12 figures, published in Astronomy & Astrophysics. v2: Typo corrected in Eq. 2
Field theory description of vacuum replicas
Creators: name: Nefediev, A. V.
name: Ribeiro, J. E. F. T.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we develop a systematic quantum field theory based approach to the vacuum replica recently found to exist in effective low energy models in hadronic physics. A local operator creating the replica state is constructed explicitly. We show that a new effective quark-quark force arises in result of replica existence. Phenomenological implications of such a force are also briefly discussed.
description: RevTeX4, 23 pages, 4 Postscript figures, uses epsfig.sty, to appear in Phys.Rev.D
Limiting phosphorus may result in impaired growth and decreased glucose content in Escherichia coli MG1655
Creators: name: Hajirawala, Sahitya Kamlesh
name: Benam, Niloufar
name: Luong, Jasper Hoi Chun
name: Yang, Jiayi
Publisher: name: Undergraduate Journal of Experimental Microbiology and Immunology
Year: 2020

description: Inorganic phosphate is an important source of phosphorus for Escherichia coli metabolism. In addition to carbon and nitrogen, the presence of these molecules within the bacterium’s environment contributes to its survival and growth. As such, extended periods of nutrient starvation results in metabolic and physiological changes to allow the organism to survive and adapt. Such a change is the activation of the stationary phase stress response primed by RpoS expression that results in glycogen accumulation. We hypothesized that the response occurs when phosphorus is limited to conserve metabolic energy in the form of glycogen as essential nutrients are limited. To determine the effects of phosphorus and nitrogen limitation on cellular growth and stationary phase glycogen accumulation of E. coli, MG1655 wild-type cells were subjected to nutrient limitation, and subsequent cellular glycogen quantification was attempted using a previously-established enzymatic glucose assay. Bacterial growth curve analysis showed that phosphorus-limiting conditions significantly impaired growth across all growth phases compared to non-limiting conditions and nitrogen-limiting conditions. Likewise, cellular glucose levels quantified after amyloglucosidase/hexokinase treatment may indicate a reduction of cellular glucose levels when phosphorus was limited compared to non-limiting conditions. Similarly, a possible reduction in cellular glucose levels relative to non-limiting conditions was observed in the nitrogen-limiting conditions but only when treated with amyloglucosidase. Altogether, the results of the investigation did not implicate any conclusive findings between phosphorus or nitrogen limitation and changes in cellular glycogen levels, but rather suggested that limiting phosphorus may lead to a reduction in bacterial growth and cellular glucose levels.
description: Undergraduate Journal of Experimental Microbiology and Immunology, Vol. 25 (2020): Undergraduate Journal of Experimental Microbiology and Immunology (UJEMI)
Hole-based memory operation in an InAs/GaAs quantum dot heterostructure
Creators: name: Marent, A.
name: Nowozin, Tobias
name: Gelze, J.
name: Luckert, F.
name: Bimberg, Dieter
Publisher: name: Technische Universität Berlin
Year: 2009
Subjects: subject: 530 Physik
subject: magnetic hysteresis
subject: ohmic contacts
subject: quantum wells
subject: heterostructures
subject: electronic transport
subject: dynamic random-access-memory
subject: Hall effect
subject: field effect transistors
subject: quantum dots

description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 95, 242114 (2009) and may be found at https://doi.org/10.1063/1.3275758.
description: We present an InAs/GaAs quantum dot (QD) memory structure with all-electrical data access which uses holes as charge carriers. Charging and discharging of the QDs are clearly controlled by a gate voltage. The stored information is read-out by a two-dimensional hole gas underneath the QD-layer. Time resolved drain-current-measurements demonstrate the memory operation. Present write times are 80 ns.
Tighter generalized monogamy and polygamy relations for multiqubit systems
Creators: name: Jin, Zhi-Xiang
name: Fei, Shao-Ming
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a different kind of monogamy and polygamy relations based on concurrence and concurrence of assistance for multiqubit systems. By relabeling the subsystems associated with different weights, a smaller upper bound of the $α$th ($0\leqα\leq2$) power of concurrence for multiqubit states is obtained. We also present tighter monogamy relations satisfied by the $α$th ($0\leqα\leq2$) power of concurrence for $N$-qubit pure states under the partition $AB$ and $C_1 . . . C_{N-2}$, as well as under the partition $ABC_1$ and $C_2\cdots C_{N-2}$. These inequalities give rise to the restrictions on entanglement distribution and the trade off of entanglement among the subsystems. Similar results are also derived for negativity.
description: 8 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:1905.01613
Deep Triplet Neural Networks with Cluster-CCA for Audio-Visual Cross-modal Retrieval
Creators: name: Zeng, Donghuo
name: Yu, Yi
name: Oyama, Keizo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Multimedia (cs.MM)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Cross-modal retrieval aims to retrieve data in one modality by a query in another modality, which has been a very interesting research issue in the field of multimedia, information retrieval, and computer vision, and database. Most existing works focus on cross-modal retrieval between text-image, text-video, and lyrics-audio.Little research addresses cross-modal retrieval between audio and video due to limited audio-video paired datasets and semantic information. The main challenge of audio-visual cross-modal retrieval task focuses on learning joint embeddings from a shared subspace for computing the similarity across different modalities, where generating new representations is to maximize the correlation between audio and visual modalities space. In this work, we propose a novel deep triplet neural network with cluster canonical correlation analysis(TNN-C-CCA), which is an end-to-end supervised learning architecture with audio branch and video branch.We not only consider the matching pairs in the common space but also compute the mismatching pairs when maximizing the correlation. In particular, two significant contributions are made: i) a better representation by constructing deep triplet neural network with triplet loss for optimal projections can be generated to maximize correlation in the shared subspace. ii) positive examples and negative examples are used in the learning stage to improve the capability of embedding learning between audio and video. Our experiment is run over 5-fold cross-validation, where average performance is applied to demonstrate the performance of audio-video cross-modal retrieval. The experimental results achieved on two different audio-visual datasets show the proposed learning architecture with two branches outperforms existing six CCA-based methods and four state-of-the-art based cross-modal retrieval methods.
description: 21 pages,11 figures
Towards a strong-coupling theory of QCD at finite density
Creators: name: Bringoltz, B.
name: Svetitsky, B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We apply strong-coupling perturbation theory to the QCD lattice Hamiltonian. We begin with naive, nearest-neighbor fermions and subsequently break the doubling symmetry with next-nearest-neighbor terms. The effective Hamiltonian is that of an antiferromagnet with an added kinetic term for baryonic "impurities," reminiscent of the t-J model of high-T_c superconductivity. As a first step, we fix the locations of the baryons and make them static. Following analyses of the t-J model, we apply large-N methods to obtain a phase diagram in the (N_c,N_f) plane at zero temperature and baryon density. Next we study a simplified U(3) toy model, in which we add baryons to the vacuum. We use a coherent state formalism to write a path integral which we analyze with mean field theory, obtaining a phase diagram in the (n_B,T) plane.
description: Lattice2002(nonzerot) - Parallel talk and poster presented at Lattice 2002, Cambridge, MA, USA, June 2002. 6 pages, 6 EPS figures
Acarodynerus Giordani Soika 1962
Creators: name: Carpenter, James M.
name: Brown, Graham R.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Vespidae
Acarodynerus

description: Genus Acarodynerus Giordani Soika
Acarodynerus Giordani Soika 1962 [1961]: 64 (key), 146, genus.
Type species: Odynerus clypeatus de Saussure 1853, by original designation.
Taxonomy: Giordani Soika 1962 [1961]: 147 (key to species); 1977: 128 (key to species).— Cardale 1985: 162–164 (cat.).
Distribution: Australia.
Ethology: No reports. The presence of acarinaria on the propodeum indicates a symbiotic relationship with mites.
description: Published as part of Carpenter, James M. & Brown, Graham R., 2021, Catalogue of the Australian Eumeninae (Hymenoptera: Vespidae), pp. 1-68 in Zootaxa 4919 (1) on pages 21-22, DOI: 10.11646/zootaxa.4919.1.1, http://zenodo.org/record/4473370
The Australian PPSA from a Canadian Perspective: Some Comparative Reflections
Creators: name: Duggan, Anthony
Publisher: name: Monash University
Year: 2019
Subjects: subject: Law
subject: FOS: Law

description: The Australian Personal Property Securities Act 2009 (Cth) is based in part on the Saskatchewan Personal Property Security Act, but it departs from the Saskatchewan model in numerous significant respects in terms of both drafting and substance. The differences fall into three main categories: (1) drafting differences; (2) substantive differences which are the result of mistakes on the part of the Australian law makers; and (3) substantive differences which reflect deliberate policy choices. For the most part, matters falling within categories (1) and (2) are unlikely to interest a Canadian observer, but matters falling within category (3) transcend the purely parochial and there is clearly room for an international dialogue at this level. This article focuses on selected aspects of the Australian PPSA, comparing them with the Canadian position and evaluating the alternatives. The article also addresses relevant aspects of Article 9 of the United States Uniform Commercial Code. The topics covered are as follows: (1) the Australian federal government’s take-over of the PPSA legislative agenda; (2) the Australian PPSA’s approach to security interests in cash collateral as compared with the Canadian approach; and (3) selected registration issues.
Generating a sucralose-resistant Escherichia coli strain and variant calling pipeline for whole genome sequence analysis of point mutations
Creators: name: Lui, Victoria
name: Wielunski, Camilla
name: Wong, Alvin
name: Yaroshuk, Timothy
Publisher: name: Undergraduate Journal of Experimental Microbiology and Immunology
Year: 2020

description: The gut microbiome is central to many physiological functions, therefore perturbations to microflora composition may pose a significant health concern. Sucralose is a non-caloric artificial sweetener that has been known to have bacteriostatic effects on the gut microbiota populations, and specifically been shown to reduce Escherichia coli colony forming units. Discovering the bacteriostatic mechanism of sucralose may allow for the prediction of specific bacteria affected as well as any potential physiological implications. Furthermore, E. coli grown in sucralose was found to eventually obtain quinolone antibiotic resistance, suggesting that the mechanism for sucralose and quinolone resistance potentially converges. Therefore, this study aims to determine the mutations conferring sucralose resistance in E. coli. Given the relationship to quinolone resistance and the stability of the resistance, the mutations were hypothesized to reside within genomic DNA around gene clusters involved in DNA replication and aminoglycoside transferases. A stable sucralose-resistant strain was successfully generated from E. coli MG1655, and a variant calling pipeline for whole genome sequence analysis of point mutations was developed. The pipeline was tested on the wildtype and 11 non-essential mutations were identified. Therefore, here we present a system that could potentially be applied to the sucralose-resistant strain generated here to determine in-frame mutants that may be contributing to the resistance.
description: Undergraduate Journal of Experimental Microbiology and Immunology, Vol. 25 (2020): Undergraduate Journal of Experimental Microbiology and Immunology (UJEMI)
Platelet activation by SARS-CoV-2 implicates the release of active tissue factor by infected cells
Creators: name: Dubuc, Isabelle
name: Khalki, Loubna
name: Wolberg, Alisa S.
name: Durocher, Yves
name: Lacasse, Emile
name: Langlois, Marc-André
name: Galipeau, Yannick
name: Boilard, Eric
name: Puhm, Florian
name: Belleannée, Clemence
name: Brisson, Alain R.
name: Flamand, Louis
name: Zaid, Younes
name: Allaeys, Isabelle
Publisher: name: American Society of Hematology
Year: 2022

description:
Platelets are hyperactivated in coronavirus disease 2019 (COVID-19). However, the mechanisms promoting platelet activation by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are not well understood. This may be due to inherent challenges in discriminating the contribution of viral vs host components produced by infected cells. This is particularly true for enveloped viruses and extracellular vesicles (EVs), as they are concomitantly released during infection and share biophysical properties. To study this, we evaluated whether SARS-CoV-2 itself or components derived from SARS-CoV-2-infected human lung epithelial cells could activate isolated platelets from healthy donors. Activation was measured by the surface expression of P-selectin and the activated conformation of integrin αIIbβ3, degranulation, aggregation under flow conditions, and the release of EVs. We find that neither SARS-CoV-2 nor purified spike activates platelets. In contrast, tissue factor (TF) produced by infected cells was highly potent at activating platelets. This required trace amounts of plasma containing the coagulation factors FX, FII, and FVII. Robust platelet activation involved thrombin and the activation of protease-activated receptor (PAR)-1 and -4 expressed by platelets. Virions and EVs were identified by electron microscopy. Through size-exclusion chromatography, TF activity was found to be associated with a virus or EVs, which were indistinguishable. Increased TF messenger RNA (mRNA) expression and activity were also found in lungs in a murine model of COVID-19 and plasma of severe COVID-19 patients, respectively. In summary, TF activity from SARS-CoV-2-infected cells activates thrombin, which signals to PARs on platelets. Blockade of molecules in this pathway may interfere with platelet activation and the coagulation characteristic of COVID-19.
Inflation model selection revisited after a 1.91% measurement of the Hubble constant
Creators: name: Guo, Rui-Yun
name: Zhang, Jing-Fei
name: Zhang, Xin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent local measurement of the Hubble constant based on the distance-ladder method has reached a $1.91\%$ precision, but this result is in tension with the early-universe measurements at the more than 4$σ$ level, bringing a crisis to the contemporary cosmology. In addition to the end-to-end test of the $Λ$CDM model in the late universe, it is also of great interest to see how the local $H_0$ measurement affects the determination of the primordial power spectra, and further to test the influences for the inflation model selection. Here, we constrain the primordial power spectra of scalar and tensor perturbations by using a series of observational data, including the Planck 2015 cosmic microwave background (CMB) temperature and polarization power spectra data, the Planck 2018 lensing power spectrum data, the BICEP2/Keck Array CMB B-mode data, and also the prior of optical depth $τ=0.054\pm0.007$, as well as the late-universe measurements (baryon acoustic oscillations and type Ia supernovae). In particular, we use the latest $1.91\%$ measurement of the Hubble constant, $H_{0}=74.03\pm1.42$ km s$^{-1}$ Mpc$^{-1}$, in this cosmological test. We find that considering the latest local $H_{0}$ measurement in the data combination will lead to a larger fit value of $n_{\rm s}$. With the addition of the latest local measurement of $H_{0}$, it is found that the natural inflation model is totally excluded at the $2σ$ level, the Starobinsky $R^{2}$ inflation model is marginally favored at around the $2σ$ level, and the spontaneously broken SUSY inflation model is the most favored model.
description: 2 pages, 1 figure
Cosmological Parameter Determination from Counts of Galaxies
Creators: name: Podariu, Silviu
name: Ratra, Bharat
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study constraints that anticipated DEEP survey galaxy counts versus redshift data will place on cosmological model parameters in models with and without a constant or time-variable cosmological constant $Λ$. This data will result in fairly tight constraints on these parameters. For example, if all other parameters of a spatially-flat model with a constant $Λ$ are known, the galaxy counts data should constrain the nonrelativistic matter density parameter $Ω_0$ to about 5% (10%, 1.5%) at 1 $σ$ with neutral (worst case, best case) assumptions about data quality.
description: 15 pages, 6 figures
Open Justice in the Technological Age
Creators: name: Warren, Marilyn
Publisher: name: Monash University
Year: 2019
Subjects: subject: Law
subject: FOS: Law

description: This speech explores the role of open justice in a new technological age. While courts have been public places for centuries, the advent of new technologies and social media has driven courts towards direct community engagement in order to preserve open justice. The reduction in official press reporting of court cases has meant there is an information vacuum that is being filled through social media and online content. This phenomenon results in information being published without deference to editorial opinion regarding its newsworthiness or the accuracy of content. The proliferation of online commentary has the potential to undermine the right to a fair trial for many. While courts must continue to be vigilant in ensuring certain information is suppressed in some cases, it must also engage with social media to ensure open justice. The Supreme Court of Victoria has a presence on Twitter and Facebook and may soon pilot a project where a retired Supreme Court judge would blog on certain legal issues. These are all steps to ensure that the Supreme Court continues to safeguard open justice in a new technological paradigm.