cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Differenziamento macrofagico: gli effetti dei polimeri sintetici
Creators: name: Scordari, Alessandra <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: BIO/13 Biologia applicata

description: Research for new biocompatible and easily implantable materials continuously
proposes new molecules and new substances with biological, chemical and physical
characteristics, that are more and more adapted to aesthetic and reconstructive
surgery and to the development of biomedical devices such as cardiovascular
prostheses.
Two classes of polymeric biomaterials seem to meet better these requirements:
“hydrogels” , which includes polyalkylimide (PAI) and polyvinylalcohol (PVA) and
“elastomers”, which includes polyurethanes (PUs). The first ones in the last decade
have had a great application for soft tissue augmentation, due to their similarity to
this tissue for their high water content, elasticity and oxygen permeability (Dini et
al., 2005). The second ones, on the contrary, are widely used in cardiovascular
applications (catheters, vascular grafts, ventricular assist devices, total artificial
hearts) due to their good mechanical properties and hemocompatibility (Zdrahala
R.J. and Zdrahala I.J., 1999).
In the biocompatibility evaluation of these synthetic polymers, that is important for
its potential use in clinical applications, a fundamental aspect is the knowledge of the
polymers cytotoxicity and the effect of their interaction with cells, in particular with
the cell populations involved in the inflammatory responses, i.e.
monocyte/macrophages.
In consideration of what above said, the aim of this study is the comprehension of
the in vitro effect of PAI, PVA and PU on three cell lines that represent three
different stages of macrophagic differentiation: U937 pro-monocytes, THP-1
monocytes and RAW 264.7 macrophages.
Cytotoxicity was evaluated by measuring the rate of viability with MTT, Neutral Red
and morphological analysis at light microscope in time-course dependent
experiments.
The influence of these polymers on monocyte/macrophage activation in terms of
cells adhesion, monocyte differentiation in macrophages, antigens distribution,
aspecific phagocytosis, fluid-phase endocitosis, pro-inflammatory cytokine (TNF-α,
IL-1β, IL-6) and nitric oxide (NO) release was evaluated.
In conclusion, our studies have indicated that the three different polymeric
biomaterials are highly biocompatible, since they scarcely affected viability of U937,
THP-1 and RAW 264.7 cells. Moreover, we have found that even though hydrogels
and polyurethane influences monocyte/macrophage differentiation (depending on the
particular type of cell and polymer), they are immunocompatible since they not
induced significantly high cytokine release. For these reasons their clinical
applications are strongly encouraged.
Optically active photoresponsive multifunctional polymeric materials
Creators: name: Mauriello, Francesco <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: CHIM/05 Scienza e tecnologia dei materiali polimerici

description: In the last year [1], Angiolini and co-workers have synthesized and investigated
methacrylic polymers bearing in the side chain the chiral cyclic (S)-3-hydroxypyrrolidine
moiety interposed between the main chain and the trans-azoaromatic chromophore,
substituted or not in the 4’ position by an electron-withdrawing group. In these materials, the
presence of a rigid chiral moiety of one prevailing absolute configuration favours the
establishment of a chiral conformation of one prevailing helical handedness, at least within
chain segments of the macromolecules, which can be observed by circular dichroism (CD).
The simultaneous presence of the azoaromatic and chiral functionalities allows the polymers
to display both the properties typical of dissymmetric systems (optical activity, exciton
splitting of dichroic absorptions), as well as the features typical of photochromic materials
(photorefractivity, photoresponsiveness, NLO properties).
The first part of this research was to synthesize analogue homopolymers and copolymers
based on bisazoaromatic moiety and compare their properties to those of the above mentioned
analogue derivatives bearing only one azoaromatic chromophore in the side chain. We
focused also the attention on the effects induced on the thermal and chiroptical behaviours by
the insertion of particulars achiral comonomers characterized by different side-chain mobility
and grown hindrance (MMA, tert-BMA and TrMA).
On the other hand carbazole containing polymers [2] have attracted much attention
because of their unique features. The use of these materials in advanced micro- and
nanotechnologies spreads in many different applications such as photoconductive and
photorefractive polymers, electroluminescent devices, programmable optical
interconnections, data storage, chemical photoreceptors, NLO, surface relief gratings, blue
emitting materials and holographic memory.
The second part of the work was focused on the synthesis and the characterization polymeric
derivatives bearing in the side chain carbazole or phenylcarbazole moieties linked to the (S)-
2-hydroxy succinimide or the (S)-3-hydroxy pyrrolidinyl ring as chiral groups covalently
linked to the main chain through ester bonds.
The last objective of this research was to design, synthesize, and characterize multifunctional
methacrylic homopolymers and copolymers bearing three distinct functional groups (i.e.
azoaromatic, carbazole and chiral group of one single configuration) directly linked in the
side chain.
This polymeric derivatives could be of potential interest for several advanced application
fields, such as optical storage, waveguides, chiroptical switches, chemical photoreceptors,
NLO, surface relief gratings, photoconductive materials, etc.
Rimesse e sviluppo locale nel sistema migratorio del Golfo Persico
Creators: name: Mengoni, Luisa <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: SECS-P/01 Economia politica

description: The thesis concerns, from an economic and institutional point of view, the migration process
in connection with development issues, focusing on the Middle East and North Africa region.
Adopting a south-south perspective of migration flows, which is focusing on migration from the
Maghreb and Mashreq towards the GCC, the research focuses on the linkage between migration and
local development (LED), considering the economic implication that temporary migration flows
(trough physical and human capital accumulation) have for the labour exporting countries of the
region. Since south-south migration flows are both temporary and skilled, the research points out
that return migrants from the GCC can have a significant impact for the growth of recipient
countries, as they transfer capital through remittances on regular basis and, once back, they can use
human capital acquired abroad to promote economic initiatives. Starting from the descriptive
analysis on international migration flows (from an historical to a systemic point of view), and
focusing on the patterns of people movements in the Gulf Migration System and on the role
remittances have in the region as a strategy for both household survival and local development, the
research considers the economics of migrant remittances from a micro and macro perspective and
the main direct and indirect effects that remittances have on the local communities. The review of
the economic literature on international remittances and on local development shows how migration
is an alternative strategy of financing local economic development (LED) especially for low-middle
income countries (among them the Maghreb countries). The linkage between return migration,
remittances, human capital formation and the promotion of local development in the Egyptian case
is the focus of the empirical investigation.
Reinforced Workload Distribution Fairness
Creators: name: Yao, Zhiyuan
name: Ding, Zihan
name: Clausen, Thomas Heide
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Artificial Intelligence (cs.AI)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Network load balancers are central components in data centers, that distributes workloads across multiple servers and thereby contribute to offering scalable services. However, when load balancers operate in dynamic environments with limited monitoring of application server loads, they rely on heuristic algorithms that require manual configurations for fairness and performance. To alleviate that, this paper proposes a distributed asynchronous reinforcement learning mechanism to-with no active load balancer state monitoring and limited network observations-improve the fairness of the workload distribution achieved by a load balancer. The performance of proposed mechanism is evaluated and compared with stateof-the-art load balancing algorithms in a simulator, under configurations with progressively increasing complexities. Preliminary results show promise in RLbased load balancing algorithms, and identify additional challenges and future research directions, including reward function design and model scalability.
Thermal Electrons in Mildly-relativistic Synchrotron Blast-waves
Creators: name: Margalit, Ben
name: Quataert, Eliot
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Numerical models of collisionless shocks robustly predict an electron distribution comprised of both thermal and non-thermal electrons. Here, we explore in detail the effect of thermal electrons on the emergent synchrotron emission from sub-relativistic shocks. We present a complete `thermal + non-thermal' synchrotron model and derive properties of the resulting spectrum and light-curves. Using these results we delineate the relative importance of thermal and non-thermal electrons for sub-relativistic shock-powered synchrotron transients. We find that thermal electrons are naturally expected to contribute significantly to the peak emission if the shock velocity is $\gtrsim 0.2c$, but would be mostly undetectable in non-relativistic shocks. This helps explain the dichotomy between typical radio supernovae and the emerging class of `AT2018cow-like' events. The signpost of thermal electron synchrotron emission is a steep optically-thin spectral index and a $ν^2$ optically-thick spectrum. These spectral features are also predicted to correlate with a steep post-peak light-curve decline rate, broadly consistent with observed AT2018cow-like events. We expect that thermal electrons may be observable in other contexts where mildly-relativistic shocks are present, and briefly estimate this effect for gamma-ray burst afterglows and binary neutron star mergers. Our model can be used to fit spectra and light-curves of events and accounts for both thermal and non-thermal electron populations with no additional physical degrees of freedom.
description: 15 pages, 3 figures, 1 table; ApJL submitted; See https://github.com/bmargalit/thermal-synchrotron for accompanying code; Comments welcome!
Measurements of 1st, 2nd and 3rd azimuthal anisotropy in √sNN = 200 GeV Cu+Au collisions at RHIC-PHENIX
Creators: name: Nakagomi, Hiroshi
Publisher: name: Zenodo
Year: 2016
Subjects: phenix
elliptic
triangular flow
transverse momentum
asymmetry
centrality
azimuthal
anisotropy

description: In this dissertation, the directed, elliptic and triangular flow in Cu+Au collisions at √sNN = 200GeV have been measured at mid-rapidity (|η|<0:35) for charged hadrons, π±, K±, p and ̄p and forward/backward-rapidity (3< |η|<3:9) for charged hadrons via event plane technique by using the PHENIX detectors at the RHIC. The comparison has shed light on the importance of longitudinal initial condition and longitudinal dynamics.
Zipping and Unzipping of Cosmic String Loops in Collision
Creators: name: Firouzjahi, Hassan
name: Karouby, Johanna
name: Khosravi, Shahram
name: Brandenberger, Robert
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
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: In this paper the collision of two cosmic string loops is studied. After collision junctions are formed and the loops are entangled. We show that after their formation the junctions start to unzip and the loops disentangle. This analysis provides a theoretical understanding of the unzipping effect observed in numerical simulations of a network of cosmic strings with more than one type of cosmic strings. The unzipping phenomena have important effects in the evolution of cosmic string networks when junctions are formed upon collision, such as in a network of cosmic superstrings.
description: references added, typos corrected, PRD version
The Milky Way Revealed by Variable Stars I: Sample Selection of RR Lyrae stars, and Evidence for the Merger History
Creators: name: Ablimit, I.
name: Zhao, G.
name: Teklimakan, U.
name: Shi, J. -R.
name: Abdusalam, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In order to study the Milky Way, RR Lyrae (RRL) variable stars identified by Gaia, ASAS-SN and ZTF sky survey projects have been analyzed as tracers in this work. Photometric and spectroscopic information of 3417 RRLs including proper motions, radial velocity and metallcity are obtained from observational data of Gaia, LAMOST, GALAH, APOGEE and RAVE. Precise distances of RRLs with typical uncertainties less than 3% are derived by using a recent comprehensive period-luminosity-metallicity relation. Our results from kinematical and chemical analysis provide important clues for the assembly history of the Milky Way, especially for the Gaia-Sausage ancient merger. The kinematical and chemical trends found in this work are consistent with that of recent simulations which indicated that the Gaia-Sausage merger is the dual origin of the Galactic thick disc and halo. As recent similar works have found, the halo RRLs sample in this work contains a subset of radially biased orbits besides a more isotropic component. This higher orbital anisotropy component amounts to $β\simeq 0.8$, and it contributes between 42% and 83% of the halo RRLs at $4 < R(\rm kpc)<20$.
description: 31 pages, 11 figures; accepted for publication in ApJS
Sarcofahrtiopsis Hall 1933
Creators: name: Carvalho-Filho, Fernando Da Silva
name: Esposito, Maria Cristina
name: Silva, Amanda De Azevedo
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sarcophagidae
Sarcofahrtiopsis

description: Sarcofahrtiopsis Hall, 1933
 Sarcofahrtiopsis has been assumed to be a monophyletic group by many authors (Lopes 1990; Pape 1996; Mello-Patiu & Pape 2000; Pape & Méndez 2002, 2004) and this genus is easily identified by the following combination of character states: small to medium-sized flies (3–6 mm in length), wing vein R1 setose dorsally, notopleuron without or with subprimary bristles reduced, male with at least one pair of proclinate orbital bristles, postalar wall bare, mid femur in male without ctenidium, female without epiproct, male parameral apodeme usually elongated (short in S. thyropteronthos and S. cupendipe), metasternum with reduced setosity (occasional specimens with a few metasternal setulae) (Pape 1996; Mello-Patiu & Pape 2000). However, only the reduced setosity of the metasternum is valuable in the definition of this genus (Pape et al. 2002), since all the other features are present in other Sarcophaginae genera or are variable in Sarcofahrtiopsis.
description: Published as part of Carvalho-Filho, Fernando Da Silva, Esposito, Maria Cristina & Silva, Amanda De Azevedo, 2014, A further new species of Sarcofahrtiopsis Hall (Diptera: Sarcophagidae) associated with faeces of the disk-winged bat (Thyroptera Spix: Chiroptera) in Brazil and the redescription of the female terminalia of S. cuneata (Townsend), pp. 118-126 in Zootaxa 3889 (1) on page 119, DOI: 10.11646/zootaxa.3889.1.7, http://zenodo.org/record/230891
Resonant Production of Color Octet Electron at the LHec
Creators: name: Sahin, M.
name: Sultansoy, S.
name: Turkoz, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In composite models with colored preons leptogluons (l_(8)) has a same status with leptoquarks, excited leptons and quarks etc. We analyze resonant production of color octet electron (e_(8)) at QCD Explorer stage of the Large Hadron electron Collider (LHeC). It is shown that the e_(8) discovery at the LHeC will simultaneously determine the compositeness scale.
description: 13 pages, 12 figures, 5 tables
Otostigmus spinosus Porat 1876
Creators: name: Vu, Ha T.
name: Nguyen, Hung D.
name: Le, Son X.
name: Eguchi, Katsuyuki
name: Nguyen, Anh D.
name: Tran, Binh T. T.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Chilopoda
Scolopendromorpha
Scolopendridae
Otostigmus
Otostigmus spinosus

description: Otostigmus spinosus Porat, 1876 (Figs. 32–35) Otostigmus (O.) spinosus Porat, 1876: 22; Attems 1930: 152, fig. 182; Schileyko 2001: 433; Lewis 2001: 37, figs 75–78; Schileyko 2007: 81, fig. 5; Decker, 2013: 18. Material examined. GIA LAI Province: 2 specimens (IEBR-Chi 178) Kon Ka Kinh National Park, Krong village (14.2796N– 108.4583E), natural forests, elevation of 660 m, 17–18 May 2017, coll. Nguyen D. Anh. Diagnosis. Body with 21 leg-bearing segments. Spiracles oval-shaped (Fig. 33C). Antennae with 21 antennomeres; first two and of the third glabrous (Fig. 32). Coxosternal plate with 4+4 teeth (Fig. 32D). Paramedian grooves distinct on tergites 3–20 (Fig. 33B), but incomplete, invisible on sternites (Fig. 33A). Coxopleural process long, conical, with 3 apical spines (Figs 33D, 34A). Spines on prefemur of the ultimate legs large and arranged in rows (Fig. 34 C–D). Previous records in Vietnam. KHANH HOA, LAM DONG, DONG NAI (Schileyko, 2001, 2007) Distribution. Indonesia, Malaysia, Myanmar, New Guinea (Attems, 1930; Schileyko, 2007). Remarks. Our specimens agree with the description of Lewis (2010). The species has been recorded only in southcentral Vietnam (Fig. 35).
description: Published as part of Vu, Ha T., Nguyen, Hung D., Le, Son X., Eguchi, Katsuyuki, Nguyen, Anh D. & Tran, Binh T. T., 2020, A review and notes on the phylogenetic relationship of the centipede genus Otostigmus Porat, 1876 (Chilopoda: Scolopendromorpha: Scolopendridae) from Vietnam, pp. 401-438 in Zootaxa 4808 (3) on pages 428-430, DOI: 10.11646/zootaxa.4808.3.1, http://zenodo.org/record/3933160
description: {"references": ["Porat, C. O. von (1876) Om nagra exotiska Myriopoder. Bihang till Kongliga Svenska Vetenskaps-Akademien Handligar, 4 (7), 1 - 48.", "Attems, C. (1930) Myriopoda. 2. Scolopendromorpha. Das Tierreich, 54, 1 - 308.", "Schileyko, A. A. (2001) New data on chilopod centipedes of Vietnam. In: Biological Diversity of Vietnam. Data on zoological and botanical studies in Vu Quang National Park (Ha Tinh Province, Vietnam). Nauka Publisher, Moscow, pp. 417 - 445.", "Lewis, J. G. E. (2001) The scolopendrid centipedes in the collection of the National Museum of Natural History in Sofia (Chilopoda: Scolopendromorpha: Scolopendridae). Historia Naturalis Bulgarica, 13, 5 - 51.", "Schileyko, A. A. (2007) The scolopendromorph centipedes (Chilopoda) of Vietnam, with contributions to the faunas of Cambodia and Laos (Part 3). Arthropoda Selecta, 16, 71 - 95.", "Lewis, J. G. E. (2010) A key and annotated list of the Scolopendra species of the Old World with a reappraisal of Arthrorhabdus (Chilopoda: Scolopendromorpha: Scolopendridae). International Journal of Myriapodology, 3, 83 - 122. https: // doi. org / 10.1163 / 187525410 X 12578602960380"]}
A general theory on common point intersect sampling with special application to downed woody particles
Creators: name: Egglestone, Jeffrey N.
Publisher: name: University of British Columbia
Year: 2010

description: A general sampling theory referred to as common point intersect sampling is developed and assessed. This new technique is specifically applied to the problem of estimating parameters of populations of downed woody particles of interest in fire research. The performance of the common point intersect sampling method is compared to that of the well-established line intercept technique with respect to two lesser (less than 3 inches in diameter) downed woody particles populations. Results of these tests indicate that proper application of the new sampling system can yield total volume estimates of approximately 15 per cent precision with savings of up to 40 per cent of the total sampling time required by the line intercept technique. The common point intersect sampling method is demonstrated to be a useful approach to solving the problem of obtaining estimates for numerous attributes of populations of downed woody particles. General formulas are also provided which facilitate the application of common point intersect sampling to the task of obtaining parameters of standing timber such as crown area and average crown diameter from aerial photographs. The common point intersect technique is shown to be a fast and accurate means of sampling forest material. The new sampling system has been applied rigorously in only one problem area. The general nature of the common point intersect system suggests, however, that it has many other applications in a multiplicity of scientific disciplines.
Globular Cluster Populations in Four Early-Type Poststarburst Galaxies
Creators: name: Maybhate, Aparna
name: Goudfrooij, Paul
name: Schweizer, Francois
name: Puzia, Thomas H.
name: Carter, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a study of the globular cluster systems of four early-type poststarburst galaxies using deep g and I-band images from the ACS camera aboard the Hubble Space Telescope (HST). All the galaxies feature shells distributed around their main bodies and are thus likely merger remnants. The color distribution of the globular clusters in all four galaxies shows a broad peak centered on g-I ~ 1.4, while PGC 6240 and PGC 42871 show a significant number of globular clusters with g-I ~ 1.0. The latter globular clusters are interpreted as being of age ~ 500 Myr and likely having been formed in the merger. The color of the redder peak is consistent with that expected for an old metal-poor population that is very commonly found around normal galaxies. However, all galaxies except PGC 10922 contain several globular clusters that are significantly brighter than the maximum luminosity expected of a single old metal-poor population. To test for multiple-age populations of overlapping g-I color, we model the luminosity functions of the globular clusters as composites of an old metal-poor subpopulation with a range of plausible specific frequencies and an intermediate-age subpopulation of solar metallicity. We find that three of the four sample galaxies show evidence for the presence of an intermediate-age (~ 1 Gyr) globular cluster population, in addition to the old metal-poor GC population seen in normal early-type galaxies. None of the galaxies show a significant population of clusters consistent with an old, metal-rich red cluster population that is typically seen in early-type galaxies.
description: 41 pages, 13 figures, accepted for publication in AJ. Some figues have been downgraded to reduce their sizes
Was Venus Ever Habitable? Constraints from a Coupled Interior-Atmosphere-Redox Evolution Model
Creators: name: Krissansen-Totton, Joshua
name: Fortney, Jonathan J.
name: Nimmo, Francis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Venus's past climate evolution is uncertain. General circulation model simulations permit a habitable climate as late as ~0.7 Ga, and there is suggestive-albeit inconclusive-evidence for previous liquid water from surface geomorphology and mineralogy. However, it is unclear whether a habitable past can be reconciled with Venus's inferred atmospheric evolution. In particular, the lack of leftover atmospheric oxygen argues against recent water loss. Here, we apply a fully coupled model of Venus's atmospheric-interior-climate evolution from post-accretion magma ocean to present. The model self-consistently tracks C-, H-, and O-bearing volatiles and surface climate through the entirety of Venus's history. Atmospheric escape, mantle convection, melt production, outgassing, deep water cycling, and carbon cycling are explicitly coupled to climate and redox evolution. Plate tectonic and stagnant lid histories are considered. Using this coupled model, we conclude that both a habitable Venusian past and one where Venus never possessed liquid surface water can be reconciled with known constraints. Specifically, either scenario can reproduce bulk atmospheric composition, inferred surface heat flow, and observed $^{40}$Ar and $^{4}$He. Moreover, the model suggests that Venus could have been habitable with a ~100 m global ocean as late as 1 Ga, without violating any known constraints. In fact, if diffusion-limited water loss is throttled by a cool, CO$_2$-dominated upper atmosphere, then a habitable past is tentatively favored by our model. This escape throttling makes it difficult to simultaneously recover negligible water vapor and ~90 bar CO$_2$ in the modern atmosphere without temporarily sequestering carbon in the interior via silicate weathering to enhance H escape.
description: Complete text 27 pages (main text 16 pages), including 9 figures and 7 supplementary figures
H2 formation and excitation in the Stephan's Quintet galaxy-wide collision
Creators: name: Guillard, P.
name: Boulanger, F.
name: Forets, G. Pineau des
name: Appleton, P. N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Context. The Spitzer Space Telescope has detected a powerful (L(H2)~10^41 erg s-1) mid-infrared H2 emission towards the galaxy-wide collision in the Stephan's Quintet (SQ) galaxy group. This discovery was followed by the detection of more distant H2-luminous extragalactic sources, with almost no spectroscopic signatures of star formation. These observations set molecular gas in a new context where one has to describe its role as a cooling agent of energetic phases of galaxy evolution. Aims. The SQ postshock medium is observed to be multiphase, with H2 gas coexisting with a hot (~ 5 10^6 K), X-ray emitting plasma. The surface brightness of H2 lines exceeds that of the X-rays and the 0-0 S(1) H2 linewidth is ~ 900 km s-1, of the same order of the collision velocity. These observations raise three questions we propose to answer: (i) Why H2 is present in the postshock gas ? (ii) How can we account for the H2 excitation ? (iii) Why H2 is a dominant coolant ? Methods. We consider the collision of two flows of multiphase dusty gas. Our model quantifies the gas cooling, dust destruction, H2 formation and excitation in the postshock medium. Results. (i) The shock velocity, the post-shock temperature and the gas cooling timescale depend on the preshock gas density. The collision velocity is the shock velocity in the low density volume filling intercloud gas. This produces a ~ 5 10^6 K, dust-free, X-ray emitting plasma. The shock velocity is smaller in clouds. We show that gas heated to temperatures less than 10^6 K cools, keeps its dust content and becomes H2 within the SQ collision age (~ 5 10^6 years). (ii) Since the bulk kinetic energy of the H2 gas is the dominant energy reservoir, we consider that the H2 emission is powered by the dissipation of kinetic turbulent energy. (Abridged)
description: 19 pages, 12 figures. Accepted for publication in Astronomy & Astrophysics Minor editing and typos
ASETILENNI KATALITIK GIDRATLASH REAKSIYASI UCHUN KATALIZATOR YARATISH
Creators: name: Omanov, Behruzjon
name: Islomova, Gulshoda
Publisher: name: Zenodo
Year: 2023

description: Rivojlangan mamlakatlarda aseton asosan bir necha usullarda olinadi:

1. Izopropil spirtining oksidlanishi va gidrogenlanishi.

2. Izopropil benzolning oksidlanishi (kumol usuli).
The cool side of Lyman Alpha Emitters
Creators: name: Dayal, Pratika
name: Ferrara, Andrea
name: Saro, Alexandro
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We extend a previous study of Lyman Alpha Emitters (LAEs) based on hydrodynamical cosmological simulations, by including two physical processes important for LAEs: (a) Lyman Alpha and continuum luminosities produced by cooling of collisionally excited HI in the galaxy, (b) dust formation and evolution; we follow these processes on a galaxy-by-galaxy basis. HI cooling on average contributes 16-18% of the Lyman Alpha radiation produced by stars, but this value can be much higher in low mass LAEs and further increased if the HI is clumpy. The continuum luminosity is instead almost completely dominated by stellar sources. The dust content of galaxies scales with their stellar mass, M_{dust} is proportional to M_*^0.7 and stellar metallicity, Z_*, such that M_{dust} is proportional to Z_*^1.7. As a result, the massive galaxies have Lyman Alpha escape fraction as low as f_alpha=0.1, with a LAE-averaged value decreasing with redshift such that it is (0.33,0.23) at z =(5.7,6.6). The UV continuum escape fraction shows the opposite trend with redshift, possibly resulting from clumpiness evolution. The model successfully reproduces the observed Lyman Alpha and UV luminosity functions at different redshifts and the Lyman Alpha equivalent width scatter to a large degree, although the observed distribution appears to be more more extended than the predicted one. We discuss possible reasons for such tension.
description: 9 pages, accepted for publication in MNRAS
Charmonium molecules?
Creators: name: Valcarce, A.
name: Vijande, J.
name: Fernandez-Carames, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk we present some recent studies of multiquark components in the charmonium sector. We study the possible existence of compact four quark-states and meson-meson molecules in the charmonium spectroscopy.
description: 5 pages, 2 figures. To appear in the Proceedings of XIII International Conference on Hadron Spectroscopy, November 29 - December 4, 2009, Florida State University
Study of Beam Profile Measurement at Interaction Point in International Linear Collider
Creators: name: Ito, Kazutoshi
name: Miyamoto, Akiya
name: Nagamine, Tadashi
name: Tauchi, Toshiaki
name: Yamamoto, Hitoshi
name: Takubo, Yosuke
name: Sato, Yutaro
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: At the international linear collider, measurement of the beam profile at the interaction point is a key issue to achieve high luminosity. We report a simulation study on a new beam profile monitor, called the pair monitor, which uses the hit distribution of the electron-positron pairs generated at the interaction point. We obtained measurement accuracies of 5.1%, 10.0%, and 4.0% for the horizontal, vertical, and longitudinal beam size, respectively, for 50 bunch crossings.
description: 13 pages, 8 figures, 2 tables
Metallicity Distribution Function of the Eridanus~II Ultra-Faint Dwarf Galaxy from Hubble Space Telescope Narrow-band Imaging
Creators: name: Fu, Sal Wanying
name: Weisz, Daniel R.
name: Starkenburg, Else
name: Martin, Nicolas
name: Ji, Alexander P.
name: Patel, Ekta
name: Boylan-Kolchin, Michael
name: Cote, Patrick
name: Dolphin, Andrew E.
name: Longeard, Nicolas
name: Mateo, Mario L.
name: Sandford, Nathan R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use deep narrowband Ca H&K ($F395N$) imaging taken with the Hubble Space Telescope (HST) to construct the metallicity distribution function (MDF) of Local Group (LG) ultra-faint dwarf (UFD) galaxy Eridanus II (Eri II). When combined with archival $F475W$ and $F814W$ data, we measure metallicities for 60 resolved red giant branch stars as faint as $m_{F475W}\sim24$ mag, a factor of $\sim4$x more stars than current spectroscopic MDF determinations. We find that Eri II has a mean metallicity of [Fe/H]$=$-2.50$^{+0.07}_{-0.07}$ and a dispersion of $σ_{\mbox{[Fe/H]}}=0.42^{+0.06}_{-0.06}$, which are consistent with spectroscopic MDFs, though more precisely constrained owing to a larger sample. We identify a handful of extremely metal-poor star candidates (EMP; [Fe/H] $< -3$) that are marginally bright enough for spectroscopic follow up. Eri II's MDF appears well-described by a leaky box chemical evolution model. We also compute an updated orbital history for Eri II using Gaia eDR3 proper motions, and find that it is likely on first infall into the Milky Way. Our findings suggest that Eri II underwent an evolutionary history similar to that of an isolated galaxy. Compared to MDFs for select cosmological simulations of similar mass galaxies, we find that Eri II has a lower fraction of stars with [Fe/H] $< -3$, though such comparisons should currently be treated with caution due to a paucity of simulations, selection effects, and known limitations of Ca H&K for EMPs. This study demonstrates the power of deep HST CaHK imaging for measuring the MDFs of UFDs.
description: Resubmitted to ApJ with revisions following a positive referee report of the initial draft; 29 pages, 19 figures, and 3 tables, including appendix. Comments welcome!
Information Geometry and Chaos on Negatively Curved Statistical Manifolds
Creators: name: Cafaro, Carlo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A novel information-geometric approach to chaotic dynamics on curved statistical manifolds based on Entropic Dynamics (ED) is suggested. Furthermore, an information-geometric analogue of the Zurek-Paz quantum chaos criterion is proposed. It is shown that the hyperbolicity of a non-maximally symmetric 6N-dimensional statistical manifold M_{s} underlying an ED Gaussian model describing an arbitrary system of 3N non-interacting degrees of freedom leads to linear information-geometric entropy growth and to exponential divergence of the Jacobi vector field intensity, quantum and classical features of chaos respectively.
description: 7 pages, presented at MaxEnt2007, the 27th International Workshop on Bayesian Inference and Maximum Entropy Methods, Saratoga (NY, USA) (July-2007)
Parameter free scaling relation for nonequilibrium growth processes
Creators: name: Chou, Yen-Liang
name: Pleimling, Michel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We discuss a parameter free scaling relation that yields a complete data collapse for large classes of nonequilibrium growth processes. We illustrate the power of this new scaling relation through various growth models, as for example the competitive growth model RD/RDSR (random deposition/random deposition with surface diffusion) and the RSOS (restricted solid-on-solid) model with different nearest-neighbor height differences, as well as through a new deposition model with temperature dependent diffusion. The new scaling relation is compared to the familiar Family-Vicsek relation and the limitations of the latter are highlighted.
description: 4 pages, 4 figures, to appear in Physical Review E
Sarcofahrtiopsis cupendipe Carvalho-Filho & Esposito, sp. nov.
Creators: name: Carvalho-Filho, Fernando Da Silva
name: Esposito, Maria Cristina
name: Silva, Amanda De Azevedo
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sarcophagidae
Sarcofahrtiopsis
Sarcofahrtiopsis cupendipe

description: Sarcofahrtiopsis cupendipe Carvalho-Filho & Esposito sp. nov.
(Figs. 1–6, 8–15, 19)
description: Published as part of Carvalho-Filho, Fernando Da Silva, Esposito, Maria Cristina & Silva, Amanda De Azevedo, 2014, A further new species of Sarcofahrtiopsis Hall (Diptera: Sarcophagidae) associated with faeces of the disk-winged bat (Thyroptera Spix: Chiroptera) in Brazil and the redescription of the female terminalia of S. cuneata (Townsend), pp. 118-126 in Zootaxa 3889 (1) on page 119, DOI: 10.11646/zootaxa.3889.1.7, http://zenodo.org/record/230891
Transit spectrophotometry of the exoplanet HD189733b. I. Searching for water but finding haze with HST NICMOS
Creators: name: Sing, David K.
name: Desert, J. -M.
name: Etangs, A. Lecavelier des
name: Ballester, G. E.
name: Vidal-Madjar, A.
name: Parmentier, V.
name: Hebrard, G.
name: Henry, G. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present Hubble Space Telescope near-infrared transit photometry of the nearby hot-Jupiter HD189733b. The observations were taken with the NICMOS instrument during five transits, with three transits executed with a narrowband filter at 1.87 microns and two performed with a narrowband filter at 1.66 microns. Our observing strategy using narrowband filters is insensitive to the usual HST intra-orbit and orbit-to-orbit measurement of systematic errors, allowing us to accurately and robustly measure the near-IR wavelength dependance of the planetary radius. Our measurements fail to reproduce the Swain et al. absorption signature of atmospheric water below 2 microns at a 5-sigma confidence level. We measure a planet-to-star radius contrast of 0.15498+/-0.00035 at 1.66 microns and a contrast of 0.15517+/-0.00019 at 1.87 microns. Both of our near-IR planetary radii values are in excellent agreement with the levels expected from Rayleigh scattering by sub-micron haze particles, observed at optical wavelengths, indicating that upper-atmospheric haze still dominates the near-IR transmission spectra over the absorption from gaseous molecular species at least below 2 microns.
description: 9 pages, 7 figures. Accepted for publication in A&A
Charmonium spectroscopy above thresholds
Creators: name: Fernandez-Carames, T.
name: Valcarce, A.
name: Vijande, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a systematic and selfconsistent analysis of four-quark charmonium states and applied it to study compact four-quark systems and meson-meson molecules. Our results are robust and should serve to clarify the situation of charmonium spectroscopy above the threshold production of charmed mesons.
description: 4 pages, 2 figures
Mixing time of critical Ising model on trees is polynomial in the height
Creators: name: Ding, Jian
name: Lubetzky, Eyal
name: Peres, Yuval
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35; 82B20; 82B27; 82C20

description: In the heat-bath Glauber dynamics for the Ising model on the lattice, physicists believe that the spectral gap of the continuous-time chain exhibits the following behavior. For some critical inverse-temperature $β_c$, the inverse-gap is bounded for $β< β_c$, polynomial in the surface area for $β= β_c$ and exponential in it for $β> β_c$. This has been proved for $\Z^2$ except at criticality. So far, the only underlying geometry where the critical behavior has been confirmed is the complete graph. Recently, the dynamics for the Ising model on a regular tree, also known as the Bethe lattice, has been intensively studied. The facts that the inverse-gap is bounded for $β< β_c$ and exponential for $β> β_c$ were established, where $β_c$ is the critical spin-glass parameter, and the tree-height $h$ plays the role of the surface area. In this work, we complete the picture for the inverse-gap of the Ising model on the $b$-ary tree, by showing that it is indeed polynomial in $h$ at criticality. The degree of our polynomial bound does not depend on $b$, and furthermore, this result holds under any boundary condition. We also obtain analogous bounds for the mixing-time of the chain. In addition, we study the near critical behavior, and show that for $β> β_c$, the inverse-gap and mixing-time are both $\exp[Θ((β-β_c) h)]$.
description: 53 pages; 3 figures
Geometrodynamics of Information on Curved Statistical Manifolds and its Applications to Chaos
Creators: name: Cafaro, C.
name: Ali, S. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A novel information-geometrodynamical approach to chaotic dynamics (IGAC) on curved statistical manifolds based on Entropic Dynamics (ED) is presented and a new definition of information geometrodynamical entropy (IGE) as a measure of chaoticity is proposed. The general classical formalism is illustrated in a relatively simple example. It is shown that the hyperbolicity of a non-maximally symmetric 6N-dimensional statistical manifold M_{s} underlying an ED Gaussian model describing an arbitrary system of 3N degrees of freedom leads to linear information-geometric entropy growth and to exponential divergence of the Jacobi vector field intensity, quantum and classical features of chaos respectively. An information-geometric analogue of the Zurek-Paz quantum chaos criterion in the classical reversible limit is proposed. This analogy is illustrated applying the IGAC to a set of n-uncoupled three-dimensional anisotropic inverted harmonic oscillators characterized by a Ohmic distributed frequency spectrum.
description: 17 pages
title: Implantación antebraquial de catéteres venosos centrales tunelizados con reservorio para administración de quimioterapia.
Creators: name: Fernández Martínez, Ana María
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Chemotherapy
subject: Venous access
subject: Fluoroscopy
subject: Oncology
subject: Interventional vascular

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
La colocación de dispositivos de acceso venoso central con reservorio es una práctica habitual en pacientes oncológicos y clásicamente se han implantado en la pared anterior del tórax.
Estos dispositivos son una vía de acceso permanente tanto...
On the Theory of Casimir-Polder Forces
Creators: name: Skagerstam, Bo-Sture
name: Rekdal, Per Kristian
name: Vaskinn, Asle Heide
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the energy shift for an atom close to a non-magnetic body with a magnetic moment coupled to a quantized magnetic field. The corresponding repulsive Casimir-Polder force is obtained for a perfect conductor, a metal, a dielectric medium, with dielectric properties modeled by a Drude formula, and a superconductor at zero temperature. The dielectric properties of the superconductor is obtained by making use of the Mattis-Bardeen linear response theory and we present some useful expressions for the low-frequency conductivity. The quantum dynamics with a given initial state is discussed in terms of the well-known Weisskopf-Wigner theory and is compared with corresponding results for a electric dipole coupling. The results obtained are compatible with a conventional master equation approach. In order to illustrate the dependence on geometry and material properties, numerical results are presented for the ground state using a two-level approximation.
description: 13 pages, 10 figures. Minor corrections. Published version
title: Pancreatitis enfisematosa ¿Es realmente tan infrecuente?
Creators: name: Sanz de León, Olga María
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Pathology
subject: Diagnostic procedure
subject: Ultrasound
subject: CT-High Resolution
subject: Abdomen

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Revisarlas pancreatitis enfisematosas de los dos últimos años en el servicio de urgenciasde nuestro...
L'intelligenza emotiva in età evolutiva
Creators: name: Mancini, Giacomo <1972>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: M-PSI/08 Psicologia clinica

description: Emotional Intelligence (EI) has increasingly gained widespread popularity amongst both lay people and scientists in a wide range of contexts and across several research areas. In spite of rigorous inquiry into its applications in educational, social, health and clinical settings, substantial disagreement exists regarding the definition of EI, with respect to both terminology and operationalizations. Actually, there is a consensus about a conceptual distinction between Trait EI, or trait emotional self-efficacy (Petrides & Furnham, 2001), and Ability EI, or cognitive-emotional ability (Mayer & Salovey, 1997). Trait EI is measured via self-report questionnaires, whereas Ability EI is assessed via maximum performance tests. Moreover, EI is the broadest of the emotional constructs, and it subsumes various constructs, as Emotional Awareness (Lane & Schwartz, 1987). To date, EI research has focused primarily on adults, with fewer studies conducted with child samples. The aim of the present study is to investigate the role of different models of EI in childhood and early adolescence (N = 670; 353 females; Mage= 10.25 years ; SD = 1.57). In addition, a further goal is to evaluate the relationship of each construct with personality, non verbal cognitive intelligence, school performance, peer relationships, and affective disorders (anxiety and depression). Results shows significant correlations between Trait EI and Emotional Awareness, whereas Trait and Ability EI appear as independent constructs. We also found significant positive associations between age and Ablity EI and Emotional Awareness (although with add of verbal productivity), while gender differences emerged in favour of females in all EI-related measures. The results provide evidence that Trait EI is partially determined by all of the Big Five personality dimensions, but independent of cognitive ability. Finally, the present study highlights the role of EI on social interactions, school performance and, especially, a negative relationship between Trait EI and psychopathology.