cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The preliminary lattice QCD calculation of $κ$ meson decay width
Creators: name: Fu, Ziwen
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a direct lattice QCD calculation of the $κ$ meson decay width with the s-wave scattering phase shift for the isospin $I=1/2$ pion-kaon ($πK$) system. We employ a special finite size formula, which is the extension of the Rummukainen-Gottlieb formula for the $πK$ system in the moving frame, to calculate the scattering phase, which indicates a resonance around $κ$ meson mass. Through the effective range formula, we extract the effective $κ\to πK$ coupling constant $g_{κπK} = 4.54(76)$ GeV and decay width $Γ= 293 \pm 101$ MeV. Our simulations are done with the MILC gauge configurations with $N_f=2+1$ flavors of the "Asqtad" improved staggered dynamical sea quarks on a $16^3\times48$ lattice at $(m_π+ m_K) / m_κ\approx 0.8$ and lattice spacing $a \approx 0.15$ fm.
description: To make it concise. arXiv admin note: text overlap with arXiv:1110.1422, but much of v1 text overlap with articles by same and other authors removed
Classification of Moduli Spaces of Arrangements of 9 Projective Lines
Creators: name: Ye, Fei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper, we present a proof that the list of the classification of arrangements of 9 lines by Nazir and Yoshinaga is complete.
description: Changed notations in the definition of moduli space to improve clarity. Results unchanged
Archive, Theater, Ship: The Phelps Sisters Film the World
Creators: name: Cooper, Mark Garrett
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ART/06 Cinema, fotografia e televisione

description: Examines the archival survival of the amateur travelog films made by Eleanor and Claudia Lea Phelps from 1923 to 1930. Argues that early twenty-first century interest in these materials testifies to archives’ heterotopian properties, as described by Michel Foucault in his 1967 essay “Of Other Spaces.” It follows that the aim of archival work should not be to preserve or recover the past, but to transform present day institutions and their relationships. Scholars of “women and the silent screen” are engaged in precisely this kind of activity.
Getting off to a good start : problem behaviours, teacher-child relationship quality, and early school adjustment
Creators: name: Lee, Matthew
Publisher: name: University of British Columbia
Year: 2014

description: Difficulty adjusting during the first years of school is associated with negative long-term academic and behaviour outcomes (Alexander, Entwisle, & Horsey, 1997; Ladd & Dinella, 2009; Qualter, Brown, Munn, & Rotenberg, 2010). Externalizing and internalizing behaviour problems can interfere with the ability to engage in learning or get along with others at school. Teacher-child relationship quality has been found to predict a variety of academic and social outcomes for children (e.g., Hamre & Pianta, 2001; Ladd & Burgess, 2001; Maldonado-Carreño & Votruba-Drzal, 2011; Pianta & Stuhlman, 2004). Of interest in the current study is whether teacher-child relationships moderate or mediate the association between problem behaviours observed at school and student ratings of school adjustment. The sample of students (n = 482) was taken from a longitudinal study of the school adjustment of Italian school children. Results from sequential regression analyses indicated that teacher ratings of students’ externalizing behaviours were related to student self-reports of loneliness at school and school liking. There was no evidence that teacher-child relationship features mediated the association between problem behaviours and school adjustment, although teacher-child closeness was found to moderate the relationship between physical aggression and school liking.
Universal conductance fluctuations in Dirac materials in the presence of long-range disorder
Creators: name: Rossi, E.
name: Bardarson, J. H.
name: Fuhrer, M. S.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study quantum transport in Dirac materials with a single fermionic Dirac cone (strong topological insulators and graphene in the absence of intervalley coupling) in the presence of non-Gaussian long-range disorder. We show, by directly calculating numerically the conductance fluctuations, that in the limit of very large system size and disorder strength, quantum transport becomes universal. However, a systematic deviation away from universality is obtained for realistic system parameters. By comparing our results to existing experimental data on 1/f noise, we suggest that many of the graphene samples studied to date are in a non-universal crossover regime of conductance fluctuations.
description: 5 pages, 3 figures. Published version
Genetic basis of familial gastric cancer : beyond the e-cadherin (CDH1) locus
Creators: name: Hansford, Samantha
Publisher: name: University of British Columbia
Year: 2014

description: Importance. Familial aggregation occurs in approximately 10% of gastric cancers, which are generally sub-classified histologically as intestinal-type and diffuse gastric cancers. Though the genetic basis of familial intestinal-type gastric cancers is not known, in <50% of families clinically defined as hereditary diffuse gastric cancer, germline mutations in the E-cadherin gene, CDH1, are detected. This has lead to management guidelines and prevention strategies for mutation carriers. Objectives. To determine whether pathogenic germline mutations in genes alternative to CDH1 can be found in hereditary gastric cancer families using a multiplex panel sequencing approach. Design, Setting and Participants. One hundred fifteen probands from families who met the International Gastric Cancer Linkage Consortium clinical criteria for hereditary diffuse gastric cancer (n=106) or familial intestinal-type gastric cancer (n=9) were included. All diffuse gastric cancer probands tested negative for CDH1-mutations. Germline DNA was screened against a custom panel of 55 genes, including 14 prospective gastric cancer susceptibility genes, using a multiplexed amplicon-based next generation sequencing assay. Candidate mutations were validated via Sanger sequencing. Tumours from pathogenic mutation-positive probands were evaluated by immunohistochemistry. Results. Of 115 probands, four clearly pathogenic truncating mutations were identified in unrelated families, including two different mutations in CTNNA1 (alpha-catenin) and two different mutations in BRCA2. Previously described, functionally pathogenic missense mutations in SDHB (2 families) and STK11 (2 families) were also seen. Additional truncating mutations of likely lower penetrance were identified in ATM (4 families), MSR1 (2 families) and PALB2 (1 family). Cancers from carriers of CTNNA1 truncating variants had prominent loss of protein expression, further supporting their pathogenicity. Conclusion and Relevance. Using a multi-gene panel, families with hereditary gastric cancer were found to carry pathogenic mutations in genes commonly associated with other cancer susceptibility syndromes. In addition, this data suggests that familial gastric cancers, specifically hereditary diffuse gastric cancer syndrome, may benefit from a genetic, rather than clinical, classification. The genetic basis of the remaining families is likely attributable to mutations in genes yet to be implicated in hereditary gastric cancer or, in the diffuse gastric cancer families, atypical aberrations in the non-coding regions of CDH1.
An Ephemeral History: Women and British Cinema Culture in the Silent Era
Creators: name: Gledhill, Christine
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ART/06 Cinema, fotografia e televisione

description: This essay examines select examples of British trade, fan and news press of the 1910s and 1920s in order to explore how the new visibility of women in cinema—both as audiences and in films—was registered. My focus is less how women themselves responded to cinema, than how these materials, in marking the relationship between women and cinema, reveal conflicts around shifting gender relations and identities. Starting by outlining some of the problems of using such material, I will highlight some key themes that emerged in British cultural discourses and imaginings across a range of print media circulating around cinema in this formative period. These include: women and cinema work; the English “girl” and “Americanitis”; sentimentality and “sob-stuff”; acting, “it” and sex-appeal; trans-valuation of the “true woman” in the new cinematic public sphere; femininity, class and representation; and gender contest.
Synthesis, structures, and computational studies of methoxydisubstituted bis(salamo)-type homopolynuclear Cu(II) and Co(II) complexes
Creators: name: Wei, Yu-Xin
name: Li, Shi-Zhen
name: Huang, Ying
name: Wang, Li
name: Dong, Wen-Kui
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Medicine
Chemical Sciences not elsewhere classified

description: Centrosymmetric homopolynuclear Cu(II) and Co(II) chelated complexes, [Cu2(L)(H2O)2] (1) and [Co4(L)(μ-OAc)2(CH3OH)4(OAC)2]⋅2CH2Cl2 (2), were synthesized using a new symmetrical methoxy-disubstituted bis(salamo)-type ligand, H4L, with Cu(II) and Co(II) salts in organic solvents. Complexes 1 and 2 were structurally characterized by single-crystal X-ray crystallography. The results indicated that 1 is a five-coordinate dinuclear structure containing Cu(II) and 2 is a tetranuclear Co(II) complex with two distinct six-coordinate environments. Furthermore, 1 and 2 pack into three-dimensional and two-dimensional extended networks, respectively. The UV–Vis spectra, IR spectra, and Hirshfeld surface analyses of the complexes were carried out to further characterize the coordination between H4L and the metal(II) ions. Fluorescence methods were used to interrogate the coordination, where changes in emission with varied amounts of ligand supported solution-phase coordination ratios of H4L with Cu(II) ion of 1:2 and with Co(II) ion of 1:4, respectively.
Bicategories for boundary conditions and for surface defects in 3-d TFT
Creators: name: Fuchs, Jurgen
name: Schweigert, Christoph
name: Valentino, Alessandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We analyze topological boundary conditions and topological surface defects in three-dimensional topological field theories of Reshetikhin-Turaev type based on arbitrary modular tensor categories. Boundary conditions are described by central functors that lift to trivializations in the Witt group of modular tensor categories. The bicategory of boundary conditions can be described through the bicategory of module categories over any such trivialization. A similar description is obtained for topological surface defects. Using string diagrams for bicategories we also establish a precise relation between special symmetric Frobenius algebras and Wilson lines involving special defects. We compare our results with previous work of Kapustin-Saulina and of Kitaev-Kong on boundary conditions and surface defects in abelian Chern-Simons theories and in Turaev-Viro type TFTs, respectively.
description: 34 pages, some figures. v2: references added. v3: typos corrected and biliography updated
Fading Stars and the Ruined Commodity Form: Star Discourses of Loss in American Fan Magazines, 1914-1929
Creators: name: Desjardins, Mary
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ART/06 Cinema, fotografia e televisione

description: While it is a truism of film history that the arrival of sound film in the late 1920s quickly relegated certain stars to the past, fan magazines had been publishing articles since the mid-teens that focused on the careers, fade-outs, and current whereabouts of players of the motion picture industry’s early years. These publications resurrect stars from the past in articles and photo displays that also evidence a deep investment in hailing the newest fashion in dress, hairstyle and personality. This investment is compatible with the industry’s cycles, but also reminds the reader what or whom was left behind in the rush to newness. Fan magazines negotiated the tensions in giving voice to both fan desires and film industry’s needs by recognizing that those desires and needs weren’t always in sync. This essay explores how the fan magazine’s juxtaposition of star-of-the-past with modernity’s rapidly moving present suggests that the social imaginary of past cultures and societies is an affective landscape, as well as a disciplinary framework.
Marketing Your Mobile App, Pre-Launch Stage
Creators: name: Ntui, Aniebiet Inyang
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Apps
subject: Mobile Applications
subject: Marketing
subject: FOS: Economics and business

description: The awareness stage of a mobile app marketing strategy occurs before the product is launched. This stage is meant for building brand awareness and product visibility. Specifically, how will your target users discover your mobile app? Before beginning with the awareness stage, it is important to already have a thorough understanding of your brand messaging and positioning. A brand resonates with customers through its values and purpose, not through individual product features. Defining a brand position gives users the chance to connect with your product on a deeper level. Below is a list of steps and strategies to follow during the awareness stage of your marketing plan
School of Scandal: Alice Duer Miller, Scandal, and the New Woman
Creators: name: Morey, Anne
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ART/06 Cinema, fotografia e televisione

description: This paper examines adaptations of Her First Elopement (1920) and Are Parents People? (1925), based on novellas by Alice Duer Miller, in order to explore how both the underlying texts and the films derived from them explore the heroines’ desire for autonomy, which is achieved through their strategic cultivation and control of scandal. While the films met with widely contrasting receptions, their exploitation of Miller’s interest in scandal that gratifies rather than punishes the heroine suggests a complex relationship between a best-selling female author and the film industry in the first half of the 1920s.
Why is order flow so persistent?
Creators: name: Toth, Bence
name: Palit, Imon
name: Lillo, Fabrizio
name: Farmer, J. Doyne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Order flow in equity markets is remarkably persistent in the sense that order signs (to buy or sell) are positively autocorrelated out to time lags of tens of thousands of orders, corresponding to many days. Two possible explanations are herding, corresponding to positive correlation in the behavior of different investors, or order splitting, corresponding to positive autocorrelation in the behavior of single investors. We investigate this using order flow data from the London Stock Exchange for which we have membership identifiers. By formulating models for herding and order splitting, as well as models for brokerage choice, we are able to overcome the distortion introduced by brokerage. On timescales of less than a few hours the persistence of order flow is overwhelmingly due to splitting rather than herding. We also study the properties of brokerage order flow and show that it is remarkably consistent both cross-sectionally and longitudinally.
description: 42 pages, 15 figures
Additional file 4 of Comprehensive analysis of the expression, prognostic significance, and function of FAM83 family members in breast cancer
Creators: name: Jin, Yi
name: Yu, Jiahui
name: Jiang, Yi
name: Bu, Jiawen
name: Zhu, Tong
name: Gu, Xi
name: Zhu, Xudong
Publisher: name: figshare
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Additional file 4: Figure S4. The expression of FAM83G based on different clinicopathological characteristics by UALCAN database.
Characterization of different waste wood for assessing the best reuse on the basis of their quality attributes
Creators: name: Mancini, Manuela
name: Rinnan, Åsmund
Publisher: name: Zenodo
Year: 2021
Subjects: NIR spectroscopy
reuse
circular economy
SIMCA
PCA

description: Poster presentation at the conference 'Scandinavian Symposium on Chemometrics' (SSC17) in Aalborg (06-09 September 2021). SSC conferences are biennial and rotate amongst the Nordic countries. Despite the name they are international and visited by scientists from all over the world. Presenting at SSC17 is a good opportunity to disseminate WoodSpec project in conferences both on a national and an international level and receive feedback/comments to the project.
The Impossible Films of Vera, Countess of Cathcart
Creators: name: Anderson, Mark Lynn
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ART/06 Cinema, fotografia e televisione

description: This essay revisits the cause célèbre occasioned when a British novelist, playwright, and divorcée was denied entry into the United States in early 1926 on the grounds of “moral turpitude.” The Countess of Cathcart made international headlines after being detained at Ellis Island for admitting to an affair with a married man, but she was also quickly championed, feared, and ridiculed by various individuals, groups, and institutions that sought to exploit her short-lived notoriety toward different ends. The cinema was one determining context for some of these contestations over the rethink women’s involvement in early motion-picture production outside a history of the titles that were actually produced. By attending to the regulatory concerns about the films that women such as the Countess of Cathcart might have made, this essay proposes a historiographical practice that refuses to limit women’s film history to a inventory of what we can safely establish as having occurred in the past.
Bridging further animal and human memory function using functional magnetic resonance imaging in awake rats and molecular imaging
Creators: name: Mahnke, Liv
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: Neurologie
subject: Medial Temporal Lobe (MTL)
subject: Parahippocampal areas
subject: Rodent models
subject: Cross-species studies
subject: 153.12
subject: 573.8

description: The Medial Temporal Lobe (MTL) of the brain has been established to be crucial for memory function. Damage to this area, as seen, for example, in aging or patients suffering from amnesia, leads to severe memory deficits. The MTL comprises the Hippocampus (HIP) and cortical areas surrounding the HIP: the parahippocampal areas. Despite decades of research on memory function, the specific role of these subareas in episodic memory, as well as their functional relationship, remains unclear. Partly because MTL damage in patients often extends to more than one MTL subregion, thereby preventing a dissociation of their function. Notably, the function and cytoarchitecture of the MTL are conserved across a various range of species, including rodents. This allows for the use of rodent models, in which invasive targeted manipulations can be implemented, to tackle questions under debate in humans. Yet, principally because of different modus operandi, findings are transferable between species only to a limited extent. For example, in functional magnetic resonance imaging (fMRI) studies, rats are usually tested under sedation while humans are awake during testing. In the present thesis, the use of two different human-to-rat translational approaches to study the role of the HIP in episodic memory was proposed. A 9.4 Tesla (T) functional MRI approach in awake rats to achieve the standard whole-brain analyses conducted in human fMRI studies was established, and a human-to-rat behavioral paradigm with a cellular resolution imaging technique based on Immediate Early Gene detection combined. Using a high throughput MRI-compatible olfactometer (Chapter 2) and a memory paradigm for awake rats that was adapted to 9.4T fMRI, we report results similar to those observed in humans, including a more important role of the HIP in processing odors for which memory could be formed in contrast to odors newly experienced (Chapter 3). Furthermore, we showed that only the contribution of some parahippocampal areas to recognition memory (such as the lateral entorhinal cortex) is inversely correlated to hippocampal function (Mahnke et al., 2021). Here we used an imaging technique with a spatial resolution high enough to dissociate the source of activity even between adjacent brain areas. The findings emerging from these two studies suggest that even though very challenging, human-to-rat translational approaches open up very promising avenues for future cross-species studies.
Mary Pickford—as Written by Frances Marion
Creators: name: Tieber, Claus
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ART/06 Cinema, fotografia e televisione

description: Mary Pickford’s star image consists of her on-screen persona of “little Mary” and her off-screen image as Mary Pickford, the successful actress and businesswomen, co-fonder of United Artists. Both parts of her image, the sentimental, Victorian, female ideal and the modern woman of the 1910s and 1920s were to a large part written by Frances Marion. Marion did not only write the screenplays for Pickford’s most successful films, she also helped to construct her off-screen image in ghost-writing Pickford’s newspaper column “Daily Talks.” In analyzing some of these columns the article examines Pickford’s off-screen image and compares it with her screen persona. The result is an insight in the specifics of the construction of silent era star images.
Silent Comediennes and “The Tragedy of Being Funny”
Creators: name: Anderson Wagner, Kristen
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2013
Subjects: L-ART/06 Cinema, fotografia e televisione

description: Articles in fan magazines of the 1910s and 1920s with titles such as “Is it Tragic to Be Comic?” and “The Tragedy of Being Funny” often situated comediennes as victims—of their circumstances, their talents, or their looks—and films such as Show People and Ella Cinders to some degree supported the idea that being a funny woman was cause for pity as well as praise. Longstanding cultural stereotypes held that women could be either feminine or funny, and as a result female comics were frequently labeled as unsuccessful women as well as comedians. Despite the fact that many women had lucrative careers in film comedy, comediennes were frequently depicted in the popular press as uncomfortable with building their careers in comedy, uneasy about performing physical comedy, or afraid of looking ridiculous. Paradoxically, fan magazines and trade journals generally acknowledged, and even promoted, women’s humor, although traces of pervasive stereotypes about the incompatibility of comedy and femininity are evident in these discourses, and reflect broader concerns in American society about appropriate behavior for women. This paper traces some of these complex discourses and debates surrounding funny women that played out in the press and onscreen in the early twentieth century.
Universality for one-dimensional hierarchical coalescence processes with double and triple merges
Creators: name: Faggionato, A.
name: Roberto, C.
name: Toninelli, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider one-dimensional hierarchical coalescence processes (in short HCPs) where two or three neighboring domains can merge. An HCP consists of an infinite sequence of stochastic coalescence processes: each process occurs in a different "epoch" and evolves for an infinite time, while the evolutions in subsequent epochs are linked in such a way that the initial distribution of epoch $n+1$ coincides with the final distribution of epoch $n$. Inside each epoch a domain can incorporate one of its neighboring domains or both of them if its length belongs to a certain epoch-dependent finite range. Assuming that the distribution at the beginning of the first epoch is described by a renewal simple point process, we prove limit theorems for the domain length and for the position of the leftmost point (if any). Our analysis extends the results obtained in [Ann. Probab. 40 (2012) 1377-1435] to a larger family of models, including relevant examples from the physics literature [Europhys. Lett. 27 (1994) 175-180, Phys. Rev. E (3) 68 (2003) 031504]. It reveals the presence of a common abstract structure behind models which are apparently very different, thus leading to very similar limit theorems. Finally, we give here a full characterization of the infinitesimal generator for the dynamics inside each epoch, thus allowing us to describe the time evolution of the expected value of regular observables in terms of an ordinary differential equation.
description: Published in at http://dx.doi.org/10.1214/12-AAP917 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Quasi-morphisms and L^p-metrics on groups of volume-preserving diffeomorphisms
Creators: name: Brandenbursky, Michael
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Let M be a smooth compact connected oriented manifold of dimension at least two endowed with a volume form. We show that every homogeneous quasi-morphism on the identity component $Diff_0(M,vol)$ of the group of volume preserving diffeomorphisms of M, which is induced by a quasi-morphism on the fundamental group, is Lipschitz with respect to the L^p-metric on the group $Diff_0(M,vol)$. As a consequence, assuming certain conditions on the fundamental group, we construct bi-Lipschitz embeddings of finite dimensional vector spaces into $Diff_0(M,vol)$.
description: This is a published version
Additional file 1 of Comparative efficacy of pharmacological agents on reducing the risk of major adverse cardiovascular events in the hypertriglyceridemia population: a network meta-analysis
Creators: name: Qi, Yan-yan
name: Yan, Li
name: Wang, Zhong-min
name: Wang, Xi
name: Meng, Hua
name: Li, Wen-bo
name: Chen, Dong-chang
name: Li, Meng
name: Liu, Jun
name: An, Song-tao
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1: Table S1. Search strategy in PubMed database.
Application of an ion exchange loading correlation for nickel recovery from ferrous containing solution
Creators: name: Abbasi Jahromi, Parisa Sadat
Publisher: name: University of British Columbia
Year: 2014

description: Nickeliferous laterite ore is one of the resources for nickel recovery that can be processed by using commercially-available processes such as High Pressure Acid Leach. Since this is a costly hydrometallurgical process, maximum nickel recovery is required to justify the investment. Recently, the use of ion exchange resins and resin-in-pulp processes have been considered and proposed as methods of primary or secondary metal recovery from nickel laterite leach slurries and leach tailings. The solution produced in the high pressure acid leach treatment of laterite ores contains several impurities. As a result, the presence of high levels of impurities such as the ferrous ion is expected to be present in an actual resin-in-pulp feed slurry. Many of these impurities (including ferrous) initially load onto the resin and are then displaced by the target metal ion (nickel). Thus, it is expected to see a different nickel loading manner in the presence of ferrous ions compared to the loading of nickel in the absence of any impurities (i.e. nickel load onto resin only by displacing hydrogen ions). This emphasizes the significance of testing the desired ion exchange resin under conditions reflective of the expected industrial operating conditions. This thesis reports on the investigation of the loading rate of nickel onto an iminodiacetic acid ion exchange resin (TP207XL) under the finite solution volume condition in the presence of ferrous in a batch loading system. Initially, the batch loading rate of the ferrous ion onto resin under the infinite solution volume condition was examined. A hybrid correlation model was applied for both ferrous loading and nickel-ferrous displacement loading based on the kinetics experimental datasets. The correlation was found to adequately fit the ferrous loading datasets. According to the obtained fit parameters, it was proven that the loading rate of the ferrous ions onto the resin is slower than that of copper, nickel and cobalt ions. Furthermore, in the case of ferrous-nickel displacement tests, the experimental fit parameters of the hybrid correlation were used to successfully predict the results of the batch loading experiments by applying the finite difference model.
Approximately multiplicative maps from weighted semilattice algebras
Creators: name: Choi, Yemon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 39B72, 46J10

description: We investigate which weighted convolution algebras $\ell^1_ω(S)$, where $S$ is a semilattice, are AMNM in the sense of Johnson (JLMS, 1986). We give an explicit example where this is not the case. We show that the unweighted examples are all AMNM, as are all $\ell^1_ω(S)$ where $S$ has either finite width or finite height. Some of these finite-width examples are isomorphic to function algebras studied by Feinstein (IJMMS, 1999). We also investigate when $(\ell^1_ω(S),{\bf M}_2)$ is an AMNM pair in the sense of Johnson (JLMS, 1988), where ${\bf M}_2$ denotes the algebra of 2-by-2 complex matrices. In particular, we obtain the following two contrasting results: (i) for many non-trivial weights on the totally ordered semilattice ${\bf N}_{\min}$, the pair $(\ell^1_ω({\bf N}_{\min}),{\bf M}_2)$ is not AMNM; (ii) for any semilattice $S$, the pair $(\ell^1(S),{\bf M}_2)$ is AMNM. The latter result requires a detailed analysis of approximately commuting, approximately idempotent $2\times 2$ matrices.
description: AMS-LaTeX. v3: 31 pages, additional minor corrections to v2. Final version, to appear in J. Austral. Math. Soc. v4: small correction of mis-statement at start of Section 4 (this should also be fixed in the journal version)
Investigation of IMD asymmetry in microwave FETs via volterra series
Creators: name: Colantonio, P.
name: Giannini, Franco
name: Limiti, Ernesto
name: Nanni, Antonio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: IMD asymmetry generation and its asymmetrical behaviour are discussed and clarified in this contribution using a Volterra series approach. The approach has been applied to a power PHEMT device for X-Band application. The effects of harmonic terminations have been clarified, stressing the relevance of baseband terminations and in particular of the output susceptance. Simplified expressions are inferred to clarify the effects of output terminations. Finally, the opportunity to choose a suitable fundamental and second harmonic output termination to reduce intermodulation asymmetry is discussed.
Lembit Põlma välipäevik nr 1
Creators: name: Põlma, Lembit
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1985
Subjects: Ordoviitsium
Baltoskandia
Eesti
paljandid
geoloogilised kirjeldused
Ordovician
Baltoscandia
Estonia
outcrops
geological descriptions

description: Field notebook with descriptions of Ordovician outcrops in Estonia.
Electromagnetic modeling and characterization of an optically-controlled microwave phase shifterin GaAs integrated technology
Creators: name: Tripon-Canseliet, C.
name: Faci, S.
name: Deshours, F.
name: Algani, C.
name: Alquié, G.
name: Formont, S.
name: Chazelas, J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: A state of the art of the modeling of microwave photoswitching devices is exposed.  A new 3 D electromagnetic modeling allows the design of an optically-controlled microwave phase shifter microwave starting from the traditional circuit of a microwave photoswitch. Measurements of the parameters S of this optically-controlled microwave phase shifter attests the function of this circuit by optical way and highlights the interest of the integration of this new type of microwave phase shifters in systems of antennas arrays. A new optically-controlled microwave phase shifter with a patented structure is under development.
Comparison between equivalent-circuit and black-box non-linear models for microwave electron devices
Creators: name: Raffo, A.
name: Lonac, J.A.
name: Menghi, S.
name: Cignani, R.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: Black-box and Equivalent-circuit electron device models present different advantages. The first ones are independent from process and device technology (i.e, GaAs, InP, GaN). In the other side the black-box model extraction procedure could not be changed and modified, thus a “post-tune” procedure is not possible. On the contrary, equivalent circuits are strongly technology dependent, though they are more flexible in the identification procedure. In fact an “optimization” of the extracted model parameters is possible following a trade-off with measured data over a large set of bias conditions and frequencies. In this paper two device models, which represent the two categories, will be compared pointing out the differences in the extraction procedures and in the achievable accuracy under small-signal and large-signal operating conditions.
Viscous coalescence of droplets: a Lattice Boltzmann study
Creators: name: Gross, M.
name: Raabe, D.
name: Steinbach, I.
name: Varnik, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The coalescence of two resting liquid droplets in a saturated vapor phase is investigated by Lattice Boltzmann simulations in two and three dimensions. We find that, in the viscous regime, the bridge radius obeys a t^{1/2}-scaling law in time with the characteristic time scale given by the viscous time. Our results differ significantly from the predictions of existing analytical theories of viscous coalescence as well as from experimental observations. While the underlying reason for these deviations is presently unknown, a simple scaling argument is given that describes our results well.
description: 12 pages, 10 figures; as published in Phys. Fluids
Identification and characterization of pancreatic beta-cell survival factors
Creators: name: Yang, Yu Hsuan Carol
Publisher: name: University of British Columbia
Year: 2014

description: Programmed β-cell death plays an important role in both type 1 and type 2 diabetes, but analysis of candidate survival factors has yielded a few hormones and growth factors exhibiting modest β-cell protection against various stresses. Most of what is known about the mechanisms of β-cell death comes from single time-point, single parameter measurements of bulk populations of mixed cells, which are inadequate for studying the heterogeneity in death mechanisms. We simultaneously measured the kinetics of six distinct cell death mechanisms by using a caspase-3 sensor and three vital dyes, together with bright-field imaging. This allowed the characterization of the timing and order of molecular events associated with cell death in single β-cells under multiple diabetic stress conditions. Using this approach, we identified several cell death modes where the order of events that typically define apoptosis were not observed. It is becoming increasingly apparent that islets release and respond to more secreted factors than previously thought and systematic analyses of their pro-survival effects can assist in therapeutic developments. Novel putative autocrine/paracrine signalling loops in islets were identified by compiling results from gene expression datasets. Factors best known for their roles in axon guidance, Netrin and Slit families, were further characterized for their pro-survival roles in adult β-cells. With the development of the live-cell imaging-based, high-throughput screening methods capable of identifying factors that modulate β-cell death, we screened the Prestwick library of small molecules and a custom library of endogenous factors. Carbamazepine, a Na+ channel inhibitor, down-regulated the pro-apoptotic and ER-stress signalling induced by cytotoxic cytokines pointing to Na+ channels as a novel therapeutic target in diabetes. Whether specific cellular stresses associated with type 1 or type 2 diabetes require specific β-cell survival factors remains unknown. Our comparison of 206 endogenous soluble factors, predicted to act on islet cells, under 5 diabetes-relevant stress conditions revealed unique sets of protective survival factors for each stress and identified a cluster of survival factors that exhibited generalized protective effects. Since diabetes results from a deficiency in functional β-cell mass, these studies are important steps towards developing novel therapies to improve β-cell survival and function.
SiGe power HBT design considerations for IEEE 802.11 applications
Creators: name: Jiang, Ningyue
name: Ma, Zhenqiang
name: Ma, Pingxi
name: Reddy, Vijay
name: Racanelli, Marco
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: SiGe power HBTs integrated in SiGe BiCMOS are developed and characterized at 2.4 GHz for 802.11b and 5.8 GHz for 802.11a wireless LAN applications.  Design considerations of ballast resistors for SiGe power HBTs at these two frequencies are investigated for both good thermal stability and high RF power performance.  The investigations show that emitter ballast resistors or base ballast resistors should be judiciously used for SiGe power HBTs operating at different frequencies in order to extract the best RF performance from these devices.  An RF output power of 30.8 dBm with PAE of 50.2 % at 2.4 GHz and an output power of 27.3 dBm with PAE of 23.6 % at 5.8 GHz are achieved from single discrete SiGe power HBTs with 0.4µm emitter width, respectively.  These highest performance results demonstrate the great power amplification potential of SiGe HBTs for 802.11 wireless LAN applications.
Power gain analysis of SiGe HBTs with  constant ge strain
Creators: name: Jiang, Ningyue
name: Ma, Zhenqiang
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: The power gain of SiGe HBTs with constant total Ge content (strain) but different doping profiles is studied under common-emitter (CE) and common-base (CB) configurations. It is found that CE and CB configurations show different power gain sensitivity on doping concentration and bias condition. The sensitivity of fmax on  Ge profile and doping profile is also investigated.
Dopaminerge Modulation der neuronalen Erregbarkeit und der basalen synaptischen Transmission in CA1-Pyramidenzellen entlang der dorsoventralen Achse des Maus-Hippocampus
Creators: name: Beythien, Swantje
Publisher: name: Otto-von-Guericke-Universität Magdeburg
Year: 2021
Subjects: subject: Neurophysiologie
subject: Hippocampus
subject: 573.819

description: Aufgrund der epidemiologischen Bedeutung dementieller Erkrankungen ist der Hippocampus als zentrale Struktur in der Gedächtnisbildung eine viel beforschte Hirnregion. Dabei mehren sich in den letzten Jahren die Hinweise auf eine funktionelle Untergliederung des Hippocampus entlang seiner longitudinalen Achse. Dem zugrunde liegen vermutlich sowohl strukturelle Unterschiede als auch eine regional unterschiedliche Modulation durch Neurotransmittersysteme wie z.B. Dopamin. Für diese in Bildgebungs- und Verhaltensstudien an Nagern zum Teil gut charakterisierten Unterschiede fehlen bislang im Mausmodell Erklärungsmodelle auf Einzelzellebene. In dieser Arbeit wurden Unterschiede der basalen elektrophysiologischen Eigenschaften von CA1-Pyramidenzellen und der Schafferkollateral-CA1-Synapsen entlang der longitudinalen Achse des Maus-Hippocampus in akuten Hirnschnitten unter Kontrollbedingungen und unter dopaminerger Modulation mittels Patch Clamp Experimenten untersucht. Während sich bezüglich der intrinsischen Erregbarkeit keine regionalen Unterschiede feststellen ließen, stieg die Effizienz der basalen synaptischen Übertragung von dorsal nach ventral an. Diese Eigenschaften unterlagen unter unseren Versuchsbedingungen keiner Modulation durch Dopamin. Die Steigerung der synaptischen Effizienz im ventralen Hippocampus konnte nur zum Teil auf einer höhere Transmitterfreisetzungswarscheinlichkeit zurückgeführt werden. Eine Identifikation möglicher Ursachen wie beispielswiese eine Beteiligung des GABAergen Systems sollten das Ziel zukünftiger Untersuchungen sein.
A broad-band active frequency doubler operating up to 120 GHz
Creators: name: Puyal, V.
name: Konczykowska, A.
name: Nouet, P.
name: Bernard, S.
name: Riet, M.
name: Jorge, F.
name: Godin, J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: A broad-band monolithic integrated active frequency doubler operating in DC-120 GHz frequency range is presented and compared with several previous versions. The circuit is fabricated in a self-aligned InP DHBT process. Circuit measurements show sinusoidal output waveform at 120 GHz. For -8 dBm input power, the doubler has a maximum conversion gain of -0.25 dB at 50 GHz due to a peaking inductor on the doubler output.
Spin-2 fields and helicity
Creators: name: Arcos, H. I.
name: Mayor, C. S. O.
name: Otalora, G.
name: Pereira, J. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: By considering the irreducible representations of the Lorentz group, an analysis of the different spin-2 waves is presented. In particular, the question of the helicity is discussed. It is concluded that, although from the point of view of representation theory there are no compelling reasons to choose between spin-2 waves with helicity = + - 1 or helicity = + - 2, consistency arguments of the ensuing field theories favor waves with helicity = + - 1.
description: 10 pages. V2: presentation changes and discussion added
Influence of envelope impedance termination on RF behaviour ofGaN HEMT power devices
Creators: name: Bunz, B.
name: Ahmed, A.
name: Kompa, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: The influence of envelope source and loadterminations on theRF performance of  high power GaN amplifiers is investigated.An error-corrected two-tonemeasurement system has been developed enabling load- and source pull measurements in the envelope frequencybandwidth. Measured results on a 0.5µm-HEMT with a gatewidth of 8x125 µmshow a variation of 1 dB output powerand 8 % PAE.
Revisit of Correlation Analysis between Active Galactic Nuclei and Ultra-High Energy Cosmic Rays
Creators: name: Kim, Hang Bae
name: Kim, Jihyun
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We update the previous analysis of correlation between ultra-high energy cosmic rays (UHECR) and active galactic nuclei (AGN), using 69 UHECR events with energy $E\ge55\,{\rm EeV}$ released in 2010 by Pierre Auger observatory and 862 AGN within the distance $d\le100\,{\rm Mpc}$ listed in the 13th edition of Véron-Cetty and Véron AGN catalog. To make the test hypothesis definite, we use the simple AGN source model in which UHECR are originated both from AGN, with the fraction $f_A$, and from the isotropic background. We treat all AGN as equal sources of UHECR, and introduce the smearing angle $θ_s$ to incorporate the effects of intervening magnetic fields. We compare the arrival direction distributions observed by PAO and expected from the model by the correlational angular distance distribution (CADD) method. CADD method rules out the AGN dominance model with a small smearing angle ($f_A\gtrsim0.7$ and $θ_s\lesssim6^\circ$). Concerning the isotropy, CADD shows that the distribution of PAO data is marginally consistent with isotropy. The best fit model lies around the AGN fraction $f_A=0.4$ and the moderate smearing angle $θ_s=10^\circ$. For the fiducial value $f_A=0.7$, the best probability of CADD was obtained at a rather large smearing angle $θ_{\rm s}=46^\circ$. Our results imply that for the whole AGN to be viable sources of UHECR, either an appreciable amount of additional isotropic background or the large smearing effect is required. Thus, we try to bin the distance range of AGN to narrow down the UHECR sources and found that the AGN residing in the distance range $60-80\,{\rm Mpc}$ have good correlation with the updated PAO data. It is an indication that further study on the subclass of AGN as the UHECR source may be quite interesting.
description: 24 pages, 10 figures, 2 tables
A simple non-quasi-static non-linear modelof electron devices
Creators: name: Santarelli, A.
name: Di Giacomo, V.
name: Raffo, A.
name: Traverso, P. A.
name: Vannini, G.
name: Filicori, F.
name: Monaco, V. A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: A technology-independent,non-quasi-staticnon-linear model of electron devicescapableofaccuratepredictions at microwave and millimetrewavesisproposedin this paper. The model is based on thedefinitionofaquasi-staticassociated device, which is controlled by means ofequivalent voltages. In particular, in the paper it isshownhow to define and experimentally identify suitable voltage-controlled voltage sources, which modify the original domainof applied voltages and create a suitable control environment for the purely-quasi-static associated device. The advantage of this approach is that conventional purely quasi-static models can still be adopted even at very high frequencies, if suitable equivalent voltages are applied. Preliminary experimental validation of the approach is provided in the paper by means of a GaAs PHEMT.