cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Understanding the role of the HDAC3-NCoR1/2 complex in embryogenesis using embryonic stem cells
Creators: name: Lim, Donovan
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: Nuclear Receptor Corepressor 1 (NCoR1) and Nuclear Receptor Corepressor 2 (NCoR2) are large scaffolding proteins. As a scaffolding protein, they have multiple domains, including a deacetylase activating domain (DAD) that interacts with histone deacetylase 3 (HDAC3). HDAC3 is an enzyme that functions to deacetylate histone tails, leading to gene repression. NCoR1/2 also contains multiple nuclear receptor interacting domains to assist nuclear receptors in the downregulation of gene expression. Germline deletion of NCoR1, NCoR2 and HDAC3 in mice were lethal at e15.5, e16.5 and e9.5, respectively. This, therefore, demonstrates that they are crucial in embryogenesis. To study their roles in the embryo, we used Ncor1/2 double knockout (DKO) and HDAC3 KO mouse embryonic stem cells (mESCs) as model systems. Using RNA-seq, we discovered that Ncor1/2 DKO ESCs showed upregulated Hox genes, including Cdx1, Pbx1 and Meis2. This indicates that Ncor1/2 are essential in repressing Hox gene expression in ESCs, thus preventing uncontrolled differentiation. Additionally, the Cowley lab previously showed that HDAC3 KO embryoid bodies displayed an increased endodermal marker expression, such as in Gata6, Foxa2 and Sox17. In this thesis, we utilised a novel model of the developing embryo called gastruloids. Gastruloids are 3D organoid models containing the three germ layers (ectoderm, mesoderm, and endoderm). They also display organised anterior-posterior, left-right, and dorsal-ventral body axes. Using HDAC3 KO ESCs to generate gastruloids, we also observed increased endodermal gene expression. Moreover, many of the upregulated genes were also involved in heart development. Furthermore, Hox cluster genes were downregulated in the HDAC3 KO gastruloids, suggesting that HDAC3 modulates embryogenesis by regulating the expression of endoderm, Hox, and heart developmental genes. Hence, in this study, we have identified some of the causes of mouse embryonic lethality, which were contributed to by the absence of HDAC3 and NCoR1/2.
Robot lunari, vince il gioco di squadra
Creators: Chiara Badia
Publisher: name: Media Inaf
Year: 2023

Prove su strada per tre “Anymal”, robot a quattro zampe realizzati in Svizzera e collaudati su un terreno simil-lunare. Gli scienziati del Politecnico di Zurigo riportano l’impresa su “Science Robotics”, mostrando come sarà possibile esplorare il suolo sconosciuto e accidentato della Luna grazie a squadre di automi semi-autonomi dotati di strumenti di misurazione e analisi mineraria
Cheilosia brachysoma Egger 1860
Creators: name: MAZáNEK, Libor
name: VONIČKA, Pavel
name: PREISLER, JiřÍ
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia brachysoma

description: Cheilosia brachysoma Egger, 1860 Druh je znÁm pouze ze střednÍ Evropy. Vyskytuje se v současnosti již velmi vzÁcně a měl by být proto považovaný za ohrožený druh. Preferuje extenzivně spÁsané chudšÍ podhorské a horské pastviny s prameny a malými potůčky. U Kyselky [46]: 11.V.-2.VI.2006, 1 ♀ (YPT).
description: Published as part of MAZáNEK, Libor, VONIČKA, Pavel & PREISLER, JiřÍ, 2009, Syrphidae (Diptera) of the Jizerské hory Mts and Frýdlant region (northern Bohemia, Czech Republic), pp. 3-46 in Sborník Severočeského Muzea 27 on page 35, DOI: 10.5281/zenodo.7153554
ASMFC Fisheries Focus, May/June 2005, Vol. 14, Issue 4/5
Creators: name: No Name Supplied
Publisher: name: Atlantic States Marine Fisheries Commission
Year: 2005

description: The ASMFC Fisheries Focus is a monthly newsletter of the Atlantic States Marine Fisheries Commission. It contains articles and information concerning the conservation and management of nearshore fishery resources, including marine, shell and anadromous species in the Atlantic Coastal States. The articles featured in this May/June 2005 issue include: Upcoming Meetings; Species Profile: Spot;Summer Flounder Draft Addendum XVII Released for Public Comment; Weakfish Board Initiates Development of Addendum toAddress Stock Declines; Atlantic Sturgeon Addendum II; House Members Urge Support for ASMFC in NOAA Budget; ASMFC Releases RFP on Mid-Atlantic Near Shore Trawl Survey; Winter Flounder State Implementation Plans Approved; ACCSP Plans Peer Review for Spring 2006; ASMFC Employee of theQuarter Named; ASMFC Comings and Goings
Topological susceptibility from the twisted mass Dirac operator spectrum
Creators: name: Cichy, Krzysztof
name: Garcia-Ramos, Elena
name: Jansen, Karl
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results of our computation of the topological susceptibility with $N_f=2$ and $N_f=2+1+1$ flavours of maximally twisted mass fermions, using the method of spectral projectors. We perform a detailed study of the quark mass dependence and discretization effects. We make an attempt to confront our data with chiral perturbation theory and extract the chiral condensate from the quark mass dependence of the topological susceptibility. We compare the value with the results of our direct computation from the slope of the mode number. We emphasize the role of autocorrelations and the necessity of long Monte Carlo runs to obtain results with good precision. We also show our results for the spectral projector computation of the ratio of renormalization constants $Z_P/Z_S$.
description: 22 pages, 9 figures, matches JHEP version
Nuova misura salva (ancora) il Modello standard
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2023

Perché esiste la materia? Per rispondere, i fisici stanno provando a mettere in crisi la teoria del Modello standard delle particelle elementari, cercando di capire come la materia abbia prevalso sull’antimateria. Una misura ottenuta dai fisici del Jila (Usa) – e pubblicata la settimana scorsa su Science – del momento di dipolo dell’elettrone, previsto essere pari a zero dalla teoria, alza l’asticella del limite oltre cui cercare
Insulating Phase in Two-dimensional Josephson-Junction Arrays Investigated by Nonlinear Transport
Creators: name: Ikegami, Hiroki
name: Nakamura, Yasunobu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present experimental investigations of transport properties in the insulating phase of two-dimensional Josephson-junction arrays (JJAs) by systematically changing the ratio of Josephson energy $E_\mathrm{J}$ and charging energy $E_\mathrm{C}$. The observed temperature dependence of resistance indicates that the JJAs do not show a sharp phase transition but exhibit a gradual crossover to the insulating phase. At low temperatures, the current-voltage ($I$-$V$) characteristics become nonlinear as described by $I=cV+bV^a$ ($a$, $b$, and $c$ are temperature dependent coefficients). This nonlinear behavior is understood in terms of the Berezinskii-Kosterlitz-Thouless (BKT) mechanism by taking into account the influence of a finite-range cutoff of the logarithmic interaction between Cooper pairs. From the analysis of the nonlinearity, we deduce the crossover temperature to the insulating phase and determine the phase diagram in the insulating side as a function of $E_\mathrm{J} /E_\mathrm{C}$. We also show that, at very low temperatures, the $I$-$V$ characteristics continuously develop into the negative differential conductance caused by coherent single-Cooper-pair tunneling.
Fragmentation contributions to J/psi production at the Tevatron and the LHC
Creators: name: Bodwin, Geoffrey T.
name: Chung, Hee Sok
name: Kim, U-Rae
name: Lee, Jungil
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute leading-power fragmentation corrections to $J/ψ$ production at the Tevatron and the LHC. We find that, when these corrections are combined with perturbative corrections through next-to-leading order in the strong coupling constant $α_s$, we obtain a good fit to high-$p_T$ cross section data from the CDF and CMS Collaborations. The fitted long-distance matrix elements lead to predictions of near-zero $J/ψ$ polarization in the helicity frame at large $p_T$.
description: 5 pages, 4 figures, minor revisions, changes in notation, figures updated, version published in Physical Review Letters
Gravità e materia oscura, legame oltre le distanze
Creators: Redazione Sissa
Publisher: name: Media Inaf
Year: 2023

Uno studio della Sissa propone un nuovo modello di interazione non-locale tra la materia oscura di una galassia e la gravità. «È come se tutta la materia presente nell'universo dicesse alla materia oscura di una galassia come muoversi», spiegano gli autori dell’articolo, pubblicato su The Astrophysical Journal
Additional file 1 of Prediction of incidence of neurological disorders in HIV-infected persons in Taiwan: a nested case–control study
Creators: name: Weng, Ya-Wei
name: Lee, Susan Shin-Jung
name: Tsai, Hung-Chin
name: Hsu, Chih-Hui
name: Lin, Sheng-Hsiang
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Supplementary Table 1. ICD-9 and ICD 10 codes used for neurological disorders and covariates.
Farm Population Estimates for 1974
Creators: name: Banks, Vera J.
name: Banks, Vera J.
Publisher: name: Unknown
Year: 1975
Subjects: subject: Community/Rural/Urban Development
subject: Farm population
subject: migration

description: An average of 9,264,000 persons lived on farms in rural areas of the United States in the 12-month period centered on April 1974. This was a decline of 208,000 from a year earlier. Although not statistically significant, the drop represents an apparent continuation of a longtime downward trend. Since 1970, the farm population has declined at an average annual rate of 1.2 percent. The South continues to be the heaviest loser of farm population among U.S. regions. For the 1970-74 period, the average net loss to the farm population through migration and reclassification of residence from farm to nonfarm was 143,000 per year.
The Handbook of Landowner's Options - A Guide to Land Protection in New Jersey
Creators: name: No Name Supplied
Publisher: name: The Nature Conservancy of New Jersey and The New Jersey Natural Lands Trust
Year: 2002

description: New Jersey landowners can choose from a variety of options to protect the natural resources and wild areas on their property.  These options allow property owners to tailor specific protection packages to fit their needs.  The purpose of this handbook is to assist landowners in making important decisions about how to protect their land.
Hodgkin Lymphoma Presenting With Spinal Cord Compression: Challenges for Diagnosis and Initial Management.
Creators: name: Bloxham, Nicola
name: Cross, Justin
name: Garnett, Matthew
name: Bewick, Jessica
name: Armon, Kate
name: Hook, Catherine Elizabeth
name: Murray, Matthew
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Hodgkin lymphoma (HL) can present with extra-nodal disease, but spinal cord compression is exceptionally rare. We describe a 15-year-old presenting with hip/back pain with normal initial examination. Persistent pain and raised inflammatory markers prompted further investigation with MRI, which revealed an epidural mass causing spinal cord compression. On examination, there was no palpable lymphadenopathy or cauda equina syndrome, but absent lower limb reflexes were noted. Following multidisciplinary discussion, it was determined that cauda equina syndrome was imminent and therefore surgical debulking was undertaken, both to prevent this complication and establish a diagnosis. At surgery, the tumor was highly vascular. Frozen section confirmed lesional material. Following surgery, and given the frozen section findings, a short course of steroids was commenced to reduce any peri-surgical edema. Unfortunately, histopathology was ultimately non-diagnostic, due to failure of immunohistochemistry on technically challenging material. Consequently, ultrasound-guided excision biopsy of a (non-palpable) cervical lymph node was performed five days later; histopathology showed typical effacement of the normal architecture and a conspicuous population of CD15/CD30-positive larger pale cells present, confirming nodular sclerosis classic HL, despite recent steroids. We review the available literature for HL presenting with spinal cord compression and describe the challenges for diagnosis and initial management in such cases.
Anatomical barriers against SARS-CoV-2 neuroinvasion at vulnerable interfaces visualized in deceased COVID-19 patients
Creators: name: Khan, Mona
name: Clijsters, Marnick
name: Choi, Sumin
name: Backaert, Wout
name: Claerhout, Michiel
name: COUVREUR, Floor
name: Van Breda, Laure
name: Bourgeois, Florence
name: Speleman, Kato
name: Klein, Sam
name: Van Laethem, Johan
name: Verstappen, Gill
name: Dereli, Ayse Sumeyra
name: Yoo, Seung-Jun
name: Zhou, Hai
name: Do, Thuc
name: Jochmans, Dirk
name: Laenen, Lies
name: Debaveye, Yves
name: De Munter, Paul
name: Gunst, Jan
name: Jorissen, Mark
name: Lagrou, Katrien
name: Meersseman, Philippe
name: Neyts, Johan
name: Thal, Dietmar Rudolf
name: Topsakal, Vedat
name: Vandenbriele, Christophe
name: Wauters, Joost
name: Mombaerts, Peter
name: Van Gerven, Laura
Publisher: name: figshare
Year: 2023
Subjects: Sensory systems

description: Can SARS-CoV-2 hitchhike on the olfactory projection and take a direct and short route from the nose into the brain? We reasoned that the neurotropic or neuroinvasive capacity of the virus, if it exists, should be most easily detectable in individuals who died in an acute phase of the infection. Here, we applied a postmortem bedside surgical procedure for the rapid procurement of tissue, blood, and cerebrospinal fluid samples from deceased COVID-19 patients infected with the Delta, Omicron BA.1, or Omicron BA.2 variants. Confocal imaging of sections stained with fluorescence RNAscope and immunohistochemistry afforded the light-microscopic visualization of extracellular SARS-CoV-2 virions in tissues. We failed to find evidence for viral invasion of the parenchyma of the olfactory bulb and the frontal lobe of the brain. Instead, we identified anatomical barriers at vulnerable interfaces, exemplified by perineurial olfactory nerve fibroblasts enwrapping olfactory axon fascicles in the lamina propria of the olfactory mucosa.
Arte e scienza, quaranta ritratti di donne
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2023

Da oggi e fino al 10 settembre, a Villa Borghese, la mostra “Ritratte. Donne di arte e di scienza” presenta le immagini del fotografo Gerald Bruneau dedicate ai volti, alle carriere e al merito di donne italiane che hanno conquistato ruoli di primo piano nell’ambito della scienza e delle istituzioni culturali. Fra i ritratti esposti, anche quelli di due astronome dell’Istituto nazionale di astrofisica: Patrizia Caraveo e Maria Cristina De Sanctis
Building a Safer New Jersey: The State of New Jersey Hazard Mitigation Plan
Creators: name: No Name Supplied
Publisher: name: New Jersey Department of Law and Public Safety, Division of State Police, Office of Emergency Management (OEM)
Year: 2005

description: The State Hazard Mitigation Plan is the demonstration of New Jersey's commitment to reduce risks from natural hazards and serves as a guide for both State and local decision makers as they commit resources to reducing the effects of natural hazards on lives and property. New Jersey's State Hazard Mitigation Plan (SHMP) is prepared in compliance with Federal requirements for Standard State Mitigation Plans in the Stafford Act, as amended by the Disaster Mitigation Act of 2000 (42 U.S.C. 5165). It is designed to outline a strategy for the reduction of risks from natural hazards in New Jersey and to aid State and local emergency management officials in developing a hazard reduction program. This plan also establishes the framework for coordination between the Federal Emergency Management Agency (FEMA) and the State Hazard Mitigation Team (SHMT) for hazard mitigation programs.
SUSY in the sky or a keV signature of sub-GeV gravitino dark matter
Creators: name: Demidov, S. V.
name: Gorbunov, D. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We point out that recently discovered 3.5 keV line in X-ray spectra from various galaxy clusters and the Andromeda galaxy can be naturally explained by physics of a sector responsible for spontaneous supersymmetry breaking in models with R-parity. In this scenario the source of this line could be decay of sgoldstino - scalar superpartner of massive gravitino. At the same time the dominant dark matter component is stable gravitino whose mass is predicted to be about 0.25 GeV.
description: 8 pages, published version
Cheilosia canicularis
Creators: name: MAZáNEK, Libor
name: VONIČKA, Pavel
name: PREISLER, JiřÍ
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia canicularis

description: Cheilosia canicularis (Panzer, 1801) BoreomontÁnnÍ druh zÁpadnÍho palearktu. Jedna z nejhojnějšÍch pestřenek pozdnÍho léta zejména na pasekÁch zarůstajÍcÍch vysokou vegetacÍ a světlinÁch podél toků ve vlhkých smÍšených a jehličnatých lesÍch. FytofÁgnÍ larvy žijÍ zřejmě v devětsilu (Petasites spp.). Rašeliniště Jizerky NPR [33a]: 17.VIII.-1.IX.2005, 1 ♀ (YPT).
description: Published as part of MAZáNEK, Libor, VONIČKA, Pavel & PREISLER, JiřÍ, 2009, Syrphidae (Diptera) of the Jizerské hory Mts and Frýdlant region (northern Bohemia, Czech Republic), pp. 3-46 in Sborník Severočeského Muzea 27 on page 35, DOI: 10.5281/zenodo.7153554
On Power and Load Coupling in Cellular Networks for Energy Optimization
Creators: name: Ho, Chin Keong
name: Yuan, Di
name: Lei, Lei
name: Sun, Sumei
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider the problem of minimization of sum transmission energy in cellular networks where coupling occurs between cells due to mutual interference. The coupling relation is characterized by the signal-to-interference-and-noise-ratio (SINR) coupling model. Both cell load and transmission power, where cell load measures the average level of resource usage in the cell, interact via the coupling model. The coupling is implicitly characterized with load and power as the variables of interest using two equivalent equations, namely, non-linear load coupling equation (NLCE) and non-linear power coupling equation (NPCE), respectively. By analyzing the NLCE and NPCE, we prove that operating at full load is optimal in minimizing sum energy, and provide an iterative power adjustment algorithm to obtain the corresponding optimal power solution with guaranteed convergence, where in each iteration a standard bisection search is employed. To obtain the algorithmic result, we use the properties of the so-called standard interference function; the proof is non-standard because the NPCE cannot even be expressed as a closed-form expression with power as the implicit variable of interest. We present numerical results illustrating the theoretical findings for a real-life and large-scale cellular network, showing the advantage of our solution compared to the conventional solution of deploying uniform power for base stations.
description: Accepted for publication in IEEE Transactions on Wireless Communications
Molecole organiche nel cratere marziano Jezero
Creators: Laura Leonardi
Publisher: name: Media Inaf
Year: 2023

Uno studio pubblicato oggi su Nature rivela che alcuni campioni di rocce ignee, analizzati da Perseverance, presenti sul Pianeta rosso hanno mostrato segnali di fluorescenza e Raman indicativi di possibili molecole organiche. Ne parliamo con una delle autrici, Teresa Fornaro, ricercatrice all’Istituto nazionale di astrofisica
Sardinia Radio Telescope, ritorno al futuro
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2023

L’Inaf ha completato con successo l'acquisizione di tutta la strumentazione di avanguardia prevista nel progetto Pon Ricerca e Innovazione 2014-2020. Si apre ora una fase di verifica della nuova dotazione strumentale che porterà il radiotelescopio nella condizione di piena attività e produttività scientifica. La comunità astronomica internazionale potrà affrontare nuovi ambiti di ricerca, prima non esplorabili, grazie alla possibilità di osservare fino a 100 GHz
On special covariants in the exterior algebra of a simple Lie algebra
Creators: name: De Concini, Corrado
name: Frajria, Pierluigi Möseneder
name: Papi, Paolo
name: Procesi, Claudio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We study the subspace of the exterior algebra of a simple complex Lie algebra linearly spanned by the copies of the little adjoint representation or, in the case of the Lie algebra of traceless matrices, by the copies of the n-th symmetric power of the defining representation. As main result we prove that this subspace is a free module over the subalgebra of the exterior algebra generated by all primitive invariants except the one of highest degree.
description: Latex file, 11 pages, Final version, appeared in "Rendiconti Lincei - Matematica e Applicazioni"
Additional file 1 of Exploring recent patterns of migration of doctors to the United Kingdom: a mixed-methods study
Creators: name: Brennan, N.
name: Langdon, N.
name: Gale, T.
name: Humphries, N.
name: Knapton, A.
name: Bryce, M.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: Environmental Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1.
Così scorrevano i fiumi su Marte e Titano
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2023

Una nuova tecnica sviluppata dai geologi del Mit ha permesso di valutare l’intensità con cui scorrevano i fiumi su Marte e come scorrono attualmente su Titano, utilizzando osservazioni satellitari per stimare la velocità con cui spostavano fluidi e sedimenti a valle. Verificata sui fiumi terrestri, ha dato ottimi riscontri per Marte. Qualche perplessità su Titano, i cui fiumi non sembrano avere delta fluviali a ventaglio
First estimate of producing the charmed baryon $Λ_c(2880)$ at PANDA
Creators: name: Lin, Qing-Yong
name: Liu, Xiang
name: Xu, Hu-Shan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In the present work we explore the production potential of $Λ_c(2880)^+$ at PANDA. With the $J^P=\frac{5}{2}^+$ assignment to $Λ_c(2880)^+$, we calculate the differential and total cross sections of $p\bar{p}\to Λ_c^-Λ_c(2880)^+$. We also perform the Dalitz plot analysis and give the $pD^0$ invariant mass spectrum distribution of the process $p\bar{p}\to Λ_c^-pD^0$, where the signal and background contributions are considered. Our numerical results indicate that the production of $Λ_c(2880)^+$ may reach up to about 20 $μ$b. About $10^7$ events from the reconstruction of $pD^0$ can be accumulated per day, if taking the designed luminosity ($2\times10^{32}~\mbox{cm}^{-2}\mbox{s}^{-1}$) of PANDA.
description: 7 pages, 9 figures. More discussion added. Accepted by Phys. Rev. D
Additional file 1 of Acceleration of wheat breeding: enhancing efficiency and practical application of the speed breeding system
Creators: name: Cha, Jin-Kyung
name: Park, Hyeonjin
name: Choi, Changhyun
name: Kwon, Youngho
name: Lee, So-Myeong
name: Oh, Ki-Won
name: Ko, Jong-Min
name: Kwon, Soon-Wook
name: Lee, Jong-Hee
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Supplementary Material 1
Cheilosia flavipes
Creators: name: MAZáNEK, Libor
name: VONIČKA, Pavel
name: PREISLER, JiřÍ
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia flavipes

description: Cheilosia flavipes (Panzer, 1798) Eurosibiřský druh primÁrně s boreomontÁnnÍm rozšÍřenÍm. Nehojný, ale široce rozšÍřený druh, který vyhledÁvÁ světliny a jiné menšÍ otevřené plochy v podhorských a horských lesÍch. Samičky kladou vajÍčka na pchÁč oset (Cirsium arvense) a pampelišku (Taraxacum spp.), larvy jsou však neznÁmé. Rašeliniště Jizery NPR [34]: 17.-29.V.2003, 1 ♀ (CFT).
description: Published as part of MAZáNEK, Libor, VONIČKA, Pavel & PREISLER, JiřÍ, 2009, Syrphidae (Diptera) of the Jizerské hory Mts and Frýdlant region (northern Bohemia, Czech Republic), pp. 3-46 in Sborník Severočeského Muzea 27 on page 35, DOI: 10.5281/zenodo.7153554
Ecco il buco nero supermassiccio più lontano
Creators: Jacopo Danieli
Publisher: name: Media Inaf
Year: 2023

Con l’aiuto determinante del telescopio Webb, un team di ricercatori è riuscito a trovare il buco nero supermassiccio più distante mai osservato, già in piena attività a soli 570 milioni di anni dopo il big bang. Il buco nero in questione è stato identificato in una delle immagini prodotte dal telescopio facenti parte di Ceers, la Cosmic Evolution Early Release Science Survey
The corrections from one loop and two-loop Barr-Zee type diagrams to muon MDM in BLMSSM
Creators: name: Zhao, Shu-Min
name: Feng, Tai-Fu
name: Zhang, Hai-Bin
name: Yan, Ben
name: Zhan, Xi-Jie
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a supersymmetric extension of the standard model where baryon and lepton numbers are local gauge symmetries(BLMSSM) and the Yukawa couplings between Higgs doublets and exotic quarks are considered, we study the one loop diagrams and the two-loop Barr-Zee type diagrams with a closed Fermi(scalar) loop between the vector Boson and Higgs. Using the effective Lagrangian method, we deduce the Wilson coefficients of dimension 6 operators contributing to the anomalous magnetic moment of muon, which satisfies the electromagnetic gauge invariance. In the numerical analysis, we consider the experiment constraints from Higgs and neutrino data. In some parameter space, the new physics contribution is large and even reaches $24\times10^{-10}$, which can remedy the deviation well.
description: 35 pages, 10 figures
Cheilosia frontalis Loew 1857
Creators: name: MAZáNEK, Libor
name: VONIČKA, Pavel
name: PREISLER, JiřÍ
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia frontalis

description: Cheilosia frontalis Loew, 1857 Evropský druh s boreomontÁnnÍm rozšÍřenÍm. Vyskytuje se vzÁcně v okolÍ zachovalých pramenů, potůčků a jiných podmÁčených travnatých ploch na lesnÍch světlinÁch a loukÁch vyššÍch poloh. Bukovec PR [3d]: 17.VI.2005, 1 ♀ (SW). Malá Strana PR [21]: 4.VI.2008, 2 ♀♀ (SW).
description: Published as part of MAZáNEK, Libor, VONIČKA, Pavel & PREISLER, JiřÍ, 2009, Syrphidae (Diptera) of the Jizerské hory Mts and Frýdlant region (northern Bohemia, Czech Republic), pp. 3-46 in Sborník Severočeského Muzea 27 on page 35, DOI: 10.5281/zenodo.7153554
L’Extremely Large Telescope è a metà dell’opera
Creators: Redazione Eso
Publisher: name: Media Inaf
Year: 2023

La costruzione di quello che sarà a breve il telescopio più grande del mondo – con uno specchio primario da 39 metri di diametro, in cima al Cerro Armazones, nel deserto cileno di Atacama – sta avanzando a un buon ritmo, e ora l’Elt supera il traguardo del 50 per cento di completamento
Theory of electronic and spin-orbit proximity effects in graphene on Cu (111)
Creators: name: Frank, Tobias
name: Gmitra, Martin
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: CHEMICAL-VAPOR-DEPOSITION; SPINTRONICS; COPPER;
subject: 530 Physik

description: We study orbital and spin-orbit proximity effects in graphene adsorbed to the Cu(111) surface by means of density functional theory (DFT). The proximity effects are caused mainly by the hybridization of graphene p and copper d orbitals. Our electronic structure calculations agree well with the experimentally observed features. We carry out a graphene-Cu(111) distance dependent study to obtain proximity orbital and spin-orbit coupling parameters, by fitting the DFT results to a robust low energy model Hamiltonian. We find a strong distance dependence of the Rashba and intrinsic proximity induced spin-orbit coupling parameters, which are in the meV and hundreds of mu eV range, respectively, for experimentally relevant distances. The Dirac spectrum of graphene also exhibits a proximity orbital gap, of about 20 meV. Furthermore, we find a band inversion within the graphene states accompanied by a reordering of spin and pseudospin states, when graphene is pressed towards copper.
Flux $1/f^α$ noise in 2D Heisenberg spin glasses: effects of weak anisotropic interactions
Creators: name: Atalaya, Juan
name: Clarke, John
name: Schön, Gerd
name: Shnirman, Alexander
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the dynamics of a two-dimensional ensemble of randomly distributed classical Heisenberg spins with isotropic RKKY and weaker anisotropic dipole-dipole couplings. Such ensembles may give rise to the flux noise observed in SQUIDs with a $1/f^α$ power spectrum ($α\lesssim 1$). We solve numerically the Landau-Lifshiftz-Gilbert equations of motion in the dissipationless limit. We find that Ising type fluctuators, which arise from spin clustering close to a spin-glass critical behavior with $T_c =0$, give rise to $1/f^α$ noise. Even weak anisotropic interactions lead to a crossover from the Heisenberg-type criticality to the much stronger Ising-type criticality. The temperature dependent exponent $α(T) \lesssim 1$ grows and approaches unity when the temperature is lowered. This mechanism acts in parallel to the spin diffusion mechanism. Whereas the latter is sensitive to the device geometry, the spin-clustering mechanism is largely geometry independent.
description: 7 pages
Rotational Instability in the Outer Region of Protoplanetary Disks
Creators: name: Ono, Tomohiro
name: Nomura, Hideko
name: Takeuchi, Taku
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We analytically calculate the marginally stable surface density profile for rotational instability of protoplanetary disks. The derived profile can be utilized for considering the region in a rotating disk where radial pressure gradient force is comparable to the gravitational force, such as an inner edge, steep gaps or bumps and an outer region of the disk. In this paper we especially focus on the rotational instability in the outer region of disks. We find an protoplanetary disk with a surface density profile of similarity solution becomes rotationally unstable at a certain radius, depending on its temperature profile and a mass of the central star. If the temperature is relatively low and the mass of the central star is high, disks have rotationally stable similarity profiles. Otherwise, deviation from the similarity profiles of surface density could be observable, using facilities with high sensitivity, such as ALMA.
description: 7 pages, 4 figures
Photon drag effect in (Bi1−xSbx)2Te3 three-dimensional topological insulators
Creators: name: Plank, Helene
name: Golub, L. E.
name: Bauer, S.
name: Bel'kov, V. V.
name: Herrmann, Tobias
name: Olbrich, P.
name: Eschbach, M.
name: Plucinski, L.
name: Schneider, C. M.
name: Kampmeier, J.
name: Lanius, M.
name: Mussler, G.
name: Grützmacher, D.
name: Ganichev, Sergey
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: SINGLE DIRAC CONE; SURFACE-STATES; SPIN PHOTOCURRENTS; QUANTUM-WELLS; BI2TE3; TRANSPORT; BI2SE3; POLARIZATION; IONIZATION; RADIATION;
subject: 530 Physik

description: We report on the observation of a terahertz radiation-induced photon drag effect in epitaxially grown nand p-type (Bi1-xSbx)(2)Te-3 three-dimensional topological insulators with different antimony concentrations x varying from 0 to 1. We demonstrate that the excitation with polarized terahertz radiation results in a dc electric photocurrent. While at normal incidence a current arises due to the photogalvanic effect in the surface states, at oblique incidence it is outweighed by the trigonal photon drag effect. The developed microscopic model and theory show that the photon drag photocurrent can be generated in surface states. It arises due to the dynamical momentum alignment by time-and space-dependent radiation electric field and implies the radiation-induced asymmetric scattering in the electron momentum space. We show that the photon drag current may also be generated in the bulk. Both surface states and bulk photon drag currents behave identically upon variation of such macroscopic parameters as radiation polarization and photocurrent direction with respect to the radiation propagation. This fact complicates the assignment of the trigonal photon drag effect to a specific electronic system.
The low-scale approach to neutrino masses
Creators: name: Boucenna, Sofiane M.
name: Morisi, Stefano
name: Valle, Jose W. F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this short review we revisit the broad landscape of low-scale $SU(3)_c \times SU(2)_L \times U(1)_Y$ models of neutrino mass generation, with view on their phenomenological potential. This includes signatures associated to direct neutrino mass messenger production at the LHC, as well as messenger-induced lepton flavor violation processes. We also briefly comment on the presence of WIMP cold dark matter candidates.
description: 20p,11figs. Matches published version in Advances in High Energy Physics
Touch Sky: viaggio fra gli atlanti celesti
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2023

L’Inaf presenta il suo primo documentario in prima serata Rai: un tuffo fra alcune delle più belle e rare opere d’arte custodite dalle biblioteche degli osservatori d’Italia: atlanti celesti, selenografie, cometografie. Prima visione martedì 11 luglio su Rai Scuola, alle 22, e dopo l’estate su Rai3 e RaiPlay. A condurre lo spettatore fra carte e volumi illustrati con precisione e dovizia di particolari è Davide Coero Borga, volto familiare della divulgazione scientifica Rai e Inaf
Mental health among adolescents exposed to social inequality in Latin America and the Caribbean: a scoping review protocol
Creators: name: Sánchez Castro, Johanna Carolina
name: González, Laura Pilz
name: Stock, Christiane
name: Heinrichs, Katherina
Publisher: name: figshare
Year: 2022
Subjects: Health equity
Health promotion
Social determinants of health
Public health not elsewhere classified

description: This protocol describes the methodology of a scoping review that aims to explore the available knowledge about the mental health of adolescents in Latin America and the Caribbean exposed to social inequality.
Spin-orbit coupling in methyl-functionalized graphene
Creators: name: Zollner, Klaus
name: Frank, Tobias
name: Irmer, Susanne
name: Gmitra, Martin
name: Kochan, Denis
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: AUGMENTED-WAVE METHOD; PSEUDOPOTENTIALS; SPINTRONICS; ATOMS;
subject: 530 Physik

description: We present first-principles calculations of the electronic band structure and spin-orbit effects in graphene functionalized with methyl molecules in dense and dilute limits. The dense limit is represented by a 2 x 2 graphene supercell functionalized with one methyl admolecule. The calculated spin-orbit splittings are up to 0.6 meV. The dilute limit is deduced by investigating a large, 7 x 7, supercell with one methyl admolecule. The electronic band structure of this supercell is fitted to a symmetry-derived effective Hamiltonian, allowing us to extract specific hopping parameters including intrinsic, Rashba, and pseudospin inversion asymmetry spin-orbit terms. These proximity-induced spin-orbit parameters have magnitudes of about 1 meV, giant compared to pristine graphene whose intrinsic spin-orbit coupling is about 10 mu eV. We find that the origin of this giant local enhancement is the sp(3) corrugation and the breaking of local pseudospin inversion symmetry, as in the case of hydrogen adatoms. Similarly to hydrogen, also methyl acts as a resonant scatterer, with a narrow resonance peak near the charge neutrality point. We also calculate STM-like images showing the local charge densities at different energies around methyl on graphene.
Cheops osserva il pianeta più brillante di sempre
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2023

È un esopianeta ultra-caldo che orbita attorno alla sua stella ospite in meno di un giorno, nella regione conosciuta come deserto dei nettuniani caldi. I dati della missione Cheops dell'Esa hanno portato a una sorprendente rivelazione: è coperto da nubi composte da metalli riflettenti, che lo rendono l'esopianeta più brillante mai trovato. Con un commento del co-autore Gaetano Scandariato dell’Inaf di Catania
Rutherford scattering of electron vortices
Creators: name: Van Boxem, Ruben
name: Partoens, Bart
name: Verbeeck, Jo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: By considering a cylindrically symmetric generalization of a plane wave, the first Born approximation of screened Coulomb scattering unfolds two new dimensions in the scattering problem: transverse momentum and orbital angular momentum of the incoming beam. In this paper, the elastic Coulomb scattering amplitude is calculated analytically for incoming Bessel beams. This reveals novel features occurring for wide angle scattering when the incoming beam is correctly prepared. The result successfully generalizes the well known Rutherford formula, incorporating transverse and orbital angular momentum into the formalism.
description: 9 pages, 5 figures
Lontano nel passato
Creators: Edwige Pezzulli
Publisher: name: Media Inaf
Year: 2023

Ogni giovedì su Rai 1 a “Noos - L’avventura della conoscenza”, il programma ideato e condotto da Alberto Angela, l’astrofisica Edwige Pezzulli ci guida nello spazio mostrandoci le più belle immagini riprese dal telescopio James Webb. Quella presentata nella puntata del 6 luglio 2023 è la fotografia del suo primo campo profondo
Magnetotransport signatures of the proximity exchange and spin-orbit couplings in graphene
Creators: name: Lee, Jeongsu
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: SPINTRONICS; TRANSPORT;
subject: 530 Physik

description: Graphene on an insulating ferromagnetic substrate-ferromagnetic insulator or ferromagnetic metal with a tunnel barrier-is expected to exhibit large exchange and spin-orbit couplings due to proximity effects. We use a realistic transport model of charge-disorder scattering and solve the linearized Boltzmann equation numerically exactly for the anisotropic Fermi contours of modified Dirac electrons to find magnetotransport signatures of these proximity effects: proximity anisotropic magnetoresistance, inverse spin-galvanic effect, and the planar Hall resistivity. We establish the corresponding anisotropies due to the exchange and spin-orbit couplings, with respect to the magnetization orientation. We also present parameter maps guiding towards optimal regimes for observing transport magnetoanisotropies in proximity graphene.
Lofar conferma emissioni involontarie da satelliti
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2023

Lofar ha dimostrato che i satelliti possono emettere involontariamente onde radio che interferiscono con le osservazioni dei radiotelescopi. È fondamentale per il settore astronomico collaborare con l’industria per superare questi problemi e per la International Telecommunications Union stabilire una regolamentazione per il controllo di questa emissione. Con un commento di Pietro Bolli di Inaf
Molecular characterization of the model bacteriophage ΦX174 and biological implications in its complete refactoring
Creators: name: Wright, Bradley
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: The bacteriophage ΦX174 is one of the best understood viral systems, so-much-so, the entire coding repertoire of the genome has been well characterised. In this thesis, I outline research that furthers our understanding of this model virus by characterising the molecular underpinnings of its infection of host Escherichia coli C122. I used a large-scale quantitative proteomics approach to temporally monitor the infection dynamics, revealing significant host proteome remodelling. Statistical analyses revealed pathways and host proteins of importance for infection fidelity and host infection response, in particular, the small heat shock proteins lbpA and lbpB. CRISPR-Cas9 mediated targeted gene knockout of these chaperones revealed unanticipated host growth phenotype loss under double knockout conditions, suggestive of their collective essentiality. Probing of their essentiality in ΦX174 infection revealed loss of infection fecundity under double knockout as demonstrated through infection centre assays. I further explored viral biology with the use of an engineered ΦX174 strain that had been designed previously to exclude all instances of coding overlap within the genome. Coding overlap is a ubiquitous feature of viral genomes, and a phenomenon necessary to understand given our expanding ability to manipulate genetic code, where overlap may be inadvertently or deliberately interrupted. I found that the engineered ΦX174, despite maintaining coding potential, has significantly reduced progeny production, poorer capsid thermal stability, reduced attachment efficiency and reduced plaque sizes in comparison to the wild-type virus. Surprisingly, cellular lysis timing was maintained, and electron microscopy revealed no significant or obvious virion restructuring or deformities, thus alluding to genome integrity, packaging or ejection aberrations as the reasons for fidelity loss. To investigate further, I employed a targeted proteomics assay to temporally quantify viral protein production of the engineered and wild-type ΦX174 strains. The in vivo measurements of protein expression revealed deficiencies in the production of viral internal scaffolding protein B, and protein C, whose role is critical in viral genomic DNA packaging. I concluded that gene topology and cellular phenotype are critically linked, and emphasize the importance of natural sequence overlap for gene integrity. The results of my work expand our knowledge of the biology of the model bacteriophage ΦX174, and importantly, contribute to furthering our understanding of the implications of coding overlap disruption and the roles model viruses and proteomics can play in exploring these pertinent questions for the future of synthetic biology.
Theory of proximity-induced exchange coupling in graphene on hBN/(Co, Ni)
Creators: name: Zollner, Klaus
name: Gmitra, Martin
name: Frank, Tobias
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: HEXAGONAL BORON-NITRIDE; TUNNEL SPIN INJECTION; ELECTRONIC-STRUCTURE; ROOM-TEMPERATURE; SPINTRONICS; HETEROSTRUCTURES; SURFACE; ENHANCEMENT; COBALT; LAYERS;
subject: 530 Physik

description: Graphene, being essentially a surface, can borrow some properties of an insulating substrate (such as exchange or spin-orbit couplings) while still preserving a great degree of autonomy of its electronic structure. Such derived properties are commonly labeled as proximity. Here we perform systematic first-principles calculations of the proximity exchange coupling, induced by cobalt (Co) and nickel (Ni) in graphene, via a few (up to three) layers of hexagonal boron nitride (hBN). We find that the induced spin splitting of the graphene bands is of the order of 10 meV for a monolayer of hBN, decreasing in magnitude but alternating in sign by adding each new insulating layer. We find that the proximity exchange can be giant if there is a resonant d level of the transition metal close to the Dirac point. Our calculations suggest that this effect could be present in Co heterostructures, in which a d level strongly hybridizes with the valence-band orbitals of graphene. Since this hybridization is spin dependent, the proximity spin splitting is unusually large, about 10 meV even for two layers of hBN. An external electric field can change the offset of the graphene and transition-metal orbitals and can lead to a reversal of the sign of the exchange parameter. This we predict to happen for the case of two monolayers of hBN, enabling electrical control of proximity spin polarization (but also spin injection) in graphene/hBN/Co structures. Nickel-based heterostructures show weaker proximity effects than cobalt heterostructures. We introduce two phenomenological models to describe the first-principles data. The minimal model comprises the graphene (effective) p(z) orbitals and can be used to study transport in graphene with proximity exchange, while the p(z)-d model also includes hybridization with d orbitals, which is important to capture the giant proximity exchange. Crucial to both models is the pseudospin-dependent exchange coupling, needed to describe the different spin splittings of the valence and conduction bands.
Due podcast astronomici sotto il sole di luglio
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2023

Il primo si chiama “Lo stato del futuro”, special guest Sandro Bardelli, promette “un’indagine approfondita sul futuro dell’universo e della nostra civiltà” ed è disponibile su Spotify da oggi, venerdì 7 luglio. E da lunedì scorso è su Spreaker il primo episodio di un altro podcast, questa volta su “I radiotelescopi di Medicina”, anch’esso con ospiti astronomi Inaf. Buon ascolto
Cheilosia himantopus
Creators: name: MAZáNEK, Libor
name: VONIČKA, Pavel
name: PREISLER, JiřÍ
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Cheilosia
Cheilosia himantopus

description: Cheilosia himantopus (Panzer, 1798) Evropský druh s boreomontÁnnÍm rozšÍřenÍm. Vyskytuje se často v okolÍ drobných toků a na otevřených plochÁch ve vlhkých lesÍch. FytofÁgnÍ larvy žijÍ v řapÍcÍch a oddencÍch devětsilů (Petasites spp.). Bílý Potok [1a]: 16.VI.2005, 2 ♂♂. Bukovec PR [3a]: 13.VI.2005, 1 ♂; 16.VI.2007, 1 ♀. Jedlový důl PR [14]: 12.VI.2005, 1 ♂ (SW). Kořenov [16a]: 13.VI.2005, 1 ♀. U Kyselky [46]: 20.VI.-13.VII.2006, 1 ♂ (MT).
description: Published as part of MAZáNEK, Libor, VONIČKA, Pavel & PREISLER, JiřÍ, 2009, Syrphidae (Diptera) of the Jizerské hory Mts and Frýdlant region (northern Bohemia, Czech Republic), pp. 3-46 in Sborník Severočeského Muzea 27 on page 35, DOI: 10.5281/zenodo.7153554