cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Metastasi in sede di trocar dopo chirurgia laparoscopica colorettale per cancro
Creators: name: Miele, Francesco
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: La chirurgia rappresenta ancora la migliore opzione terapeutica del cancro colorettale. La chirurgia laparoscopica colorettale è ormai ben codificata e il suo impiego per la patologia benigna è indiscusso; per la patologia maligna una delle  principali controversie che, fin dall’ inizio, ha sollevato dubbi sull’ impiego dell’ approccio chirurgico laparoscopico al cancro colorettale riguarda la possibili metastasi (port site metastases) in sede di trocar. L’osservazione di un largo numero di impianti metastatici su trocar,  soprattutto in fase iniziale, ha  reso scettici i chirurghi circa i reali vantaggi apportati da tale metodica e conseguentemente la radicalità oncologica dell’ intervento.
Le cause ed i meccanismi fisiopatologici implicati non sono completamente chiariti. Scopo di questa ricerca  è di investigare l’incidenza degli impianti metastatici in sede di trocar dopo chirurgia laparoscopica colorettale per cancro ed i fattori  etiopatologici e fisiopatologici implicati nel determinismo di tale deprecabile complicanza; ciò al fine di adottare adeguate misure preventive che vanno sempre associate ad una corretta tecnica chirurgica.
Vengono presi in considerazione pazienti sottoposti ad intervento di chirurgia con tecnica videolaparoscopica per patologia maligna colorettale, reclutati da centri che eseguono correntemente chirurgia laparoscopica ai quali erano state inviate schede-questionario. Sono stati inseriti 106 pazienti, 59 di sesso maschile e 47 di sesso femminile, l’età media è stata di 67 aa. (range 34-91); gli interventi chirurgici eseguiti con approccio laparoscopico risultavano così ripartiti: emicolectomia destra 31 (29,2%), emicolectomia sinistra 14 (13,2%), resezione anteriore 45 (41,5%), amputazione addomino-perinale sec.Miles 16 (16,1%), nel periodo di tempo da  Maggio 2003 a Settembre 2005; in 22 pazienti l’intervento è stato convertito da tecnica laparoscopica a tecnica laparotomica (11%); nel gruppo dei pazienti studiati c’è stato 1 caso di metastasi in sede di trocar (0,48%).
La reale incidenza delle recidiva neoplastica in sede di trocar non è ben definita; certo essa si è progressivamente ridotta negli anni, condizionata anche dalla “learning curve”, passando da un tasso iniziale variabile (0,6-21%) ad un tasso attuale <1%.
Ciò evidentemente in rapporto anche alla identificazione di fattori implicati nel determinismo di tale complicanza quali PNP,CO2 ed altri, che ha consentito di adottare conseguentemente adeguate misure preventive imprescindibili da una meticolosa tecnica chirurgica. In conclusione  la problematica delle metastasi in sede di trocar dopo chirurgia laparoscopica colorettale per cancro attualmente sembra molto ridimensionata; i risultati emersi dalla nostra esperienza sono in linea con i dati riportati in letteratura.
Valutazione degli effetti da esposizione a nanoparticelle sulla plasticità fisiologica, nervosa e comportamentale in Octopus vulgaris
Creators: name: Grimaldi, Anna Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: L'impiego di nanomateriali nell’ultimo decennio è fortemente aumentato. Nonostante la notevole velocità di sviluppo delle nanoscienze, ancora relativamente poco è noto circa le possibili interazioni degli oggetti su scala nanometrica con gli organismi viventi in ambiente marino.
In questo studio, si è proposto, il polpo, O. vulgaris, come modello sperimentale per esplorare l’interazione con il nanoparticolato di diossido di titanio (nTiO2).
A tal fine si sono testati due diverse vie di somministrazione. In un primo set sperimentale, gli animali sono stati esposti a nanoparticolato tramite iniezione e misurata la risposta di immunità cellulare emolinfatica; in un secondo, la somministrazione è avvenuta mediante cibo (cozze previamente esposte per 24 ore a nTiO2) e misurati gli effetti in termini di risposta comportamentale, del numero di cellule nervose e di espressione genica del cervello.

Un incremento del numero degli emociti è stato registrato già dopo 4 ore la somministrazione di nanoparticolato. Inoltre, nTiO2 stimola un aumento dell' attività lisozimatica e della produzione di ossido nitrico nel emolinfa, inducendo stress ossidativo ad una concentrazione ≥ 1,0 mg / L.

È stato evidenziato che la somministrazione di nanoparticolato interferisce con i normali processi di apprendimento in test di abituazione e di evitamento a 15 e 30 giorni dal trattamento.
In associazione all’ esposizione a lungo termine si sono riscontrate significative evidenze iperplastiche ed ipertrofiche.
Nanoparticelle di TiO2 producono alterazioni di espressione genica, dopo 3 giorni e due settimane, nelle diverse strutture costituenti il cervello.

I risultati ottenuti dimostrano che la somministrazione mediante iniezione ed ingestione da nTiO2 determina significative risposte biologiche in seguito a breve e lunga esposizione interferendo con la risposta fisiologica, cellulare e comportamentale di O. vulgaris
Special joint systems for aluminium structures: experimental tests and numerical models
Creators: name: Macillo, Vincenzo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: The wide choice of cross-sectional shapes obtainable by extrusion provides the possibility to individuate new joining solution for aluminium profiles. These joints, named “special” or “non-conventional” joints, are very competitive with respect to conventional solutions because of the possibility of rapid execution, optimization of parent material, treatments and machining reduction. For these reasons, the aluminium industry is very interested to enhance the knowledge about the structural behaviour of this joint typology.
The work is focused on two different special joint systems: screw ports and bolt-channel joints. In particular, the first joint typology consists in a screw engaged in an open or closed slot of an extruded profile. The latter system consists in a track or channel section profile in which a bolt head, nuts or plates with threaded holes can be located.
Special joints are used in several structural and non applications under low and moderate loads such as façades, door and window fixtures. But, in the last years, other structural applications like staircases, floors, pedestrian bridge, industrial furniture and shelves have been developed involving special joints. Nevertheless, very little literature is available for this system and no specifications are provided by aluminium structures codes.
The main objective of this work is to overcome the lack of information about the mechanical behaviour of special joints. In order to evaluate the structural behaviour of such joint, a wide experimental campaign has been carried out. In addition, on the basis of experimental results, non-linear finite element models have been developed and calibrated.
Alternative LISA-TAIJI networks: detectability of the isotropic stochastic gravitational wave background
Creators: name: Wang, Gang
name: Han, Wen-Biao
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In previous work [1], three TAIJI orbital deployments have been proposed to compose alternative LISA-TAIJI networks, TAIJIm (leading the Earth by $20^\circ$ and $-60^\circ$ inclined with respect to ecliptic plane), TAIJIp (leading the Earth by $20^\circ$ and $+60^\circ$ inclined), TAIJIc (colocated and coplanar with LISA) with respect to the LISA mission (trailing the Earth by $20^\circ$ and $+60^\circ$ inclined). And the LISA-TAIJIm network has been identified as the most capable configuration for massive black hole binary observation. In this work, we examine the performance of three networks to the stochastic gravitational wave background (SGWB) especially for the comparison of two eligible configurations, LISA-TAIJIm and LISA-TAIJIp. This investigation shows that the detectability of LISA-TAIJIm is competitive with the LISA-TAIJIp network for some specific SGWB spectral shapes. And the capability of LISA-TAIJIm is also identical to LISA-TAIJIp to separate the SGWB components by determining the parameters of signals. Considering the performances on SGWB and massive black hole binaries observations, the TAIJIm could be recognized as an optimal option to fulfill joint observations with LISA.
description: 16 pages, 9 figures, accepted for publication in PRD
Simulazione multidimensionale ed ottimizzazione del processo di conversione dell’energia in motori ad iniezione diretta di benzina
Creators: name: Sorge, Ugo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: Nel presente lavoro, svolto presso l’Istituto Motore del Consiglio Nazionale delle Ricerche in Napoli, si esaminano le potenzialità di un motore ad elevate prestazioni di funzionamento a carica globalmente povera stratificata ai carichi medio-bassi. La problematica è affrontata principalmente per via numerica, mediante la messa a punto di un modello di simulazione dell’intero ciclo di funzionamento del motore ed il suo successivo accoppiamento con un software di ottimizzazione multi-obiettivo.
La metodologia sviluppata nel presente lavoro ha applicabilità generale, ovvero non limitata allo specifico propulsore preso in considerazione. Essa parte da una disamina delle problematiche connesse all’impiego di cariche povere e di miscele stratificate nei propulsori di nuova generazione, prosegue con la messa a punto di un sotto-modello tridimensionale in grado di riprodurre la dinamica di spray generati da iniettori di nuova generazione. Viene sviluppato un sotto-modello versatile e di elevate capacità predittive, validato su quattro diversi iniettori, in base a misure preventivamente effettuate presso il Laboratorio Spray dell’Istituto Motori in Napoli. Si riporta la descrizione del modello di simulazione tridimensionale del motore ad iniezione diretta considerato, ed il confronto con i dati sperimentali ottenuti sul motore al banco prova. È descritta la procedura volta all’ottimizzazione delle prestazione energetiche ed ambientali del motore sia nel caso di iniezione singola, che per iniezione suddivisa in due eventi successivi. È riportato quanto svolto relativamente allo studio del fenomeno della detonazione, ovvero le fasi preliminari di messa a punto di un modello che in futuro sarà incluso nell’ambito del problema di ottimizzazione, e che servirà a scartare le condizioni simulate per le quali è altamente probabile l’insorgere della detonazione.
Circularly polarized waves in a plasma with vacuum polarization effects
Creators: name: Lundin, J.
name: Stenflo, L.
name: Brodin, G.
name: Marklund, M.
name: Shukla, P. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The theory for large amplitude circularly polarized waves propagating along an external magnetic field is extended in order to include also vacuum polarization effects. A general dispersion relation, which unites previous results, is derived.
description: 5 pages (To appear in Physics of Plasmas)
Structural Characterization of Magnetic Nano-particles Suspensions, Using Magnetic Measurements
Creators: name: Popa, N. -C.
name: Siblini, A.
name: Rousseau, J. -J.
name: Blanc-Mignon, M. -F.
name: Chatelon, J. -P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The paper describes some characteristics of the "P" curves for structural characterization of magnetic nano-particles suspensions (complex fluids, complex powders, complex composite materials, or living biological materials having magnetic properties). In the case of these materials, the magnetic properties are conferred to various carrier liquids by artificially integrating in their structure ferromagnetic particles of different sizes. The magnetic properties are usually shown by the hysteresis curve. The structure can be seen on (electronic) micrography. The P curves offer another possibility to determine the structure of the magnetic component of a complex fluid by numerical analysis of the magnetization curve experimentally obtained. The paper presents a detailed approach of the P curves and some limitations in their use.
description: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
La tutela cautelare nel processo tributario
Creators: name: Luongo, Luigi Rosario
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: Il lavoro di tesi si compone di tre capitoli.
Nel primo capitolo si opera, principalmente, una ricognizione della giurisprudenza costituzionale sul fondamento della tutela cautelare.
Nel secondo capitolo, si è tracciato il quadro storico della tutela cautelare nel contenzioso tributario e, successivamente, si è considerato l’attuale quadro normativo. Rileva l’art. 47 D.lgs. n. 546 del 1992, che fonda la disciplina della tutela cautelare nel processo tributario di primo grado. Dalla osservazione dell’attuale impianto della protezione cautelare accordata al contribuente nel contenzioso fiscale emegono alcuni profili di inadeguatezza, che si sono in dettaglio considerati: a) la non reclamabilità dell’ordinanza cautelare emessa ai sensi dell’art. 47 D.lgs. n. 546/1992; b) la mancata previsione di forme di tutela cautelare a contenuto atipico; c) la sostanziale ristrettezza applicativa dell’art. 60 D.P.R. 602/1973 (sospensione dell’esecuzione) nella fase propriamente esecutiva della riscossione delle imposte; d) la deteriore tutela cautelare di cui può disporre il contribuente che impugni i provvedimenti di fermo amministrativo e di iscrizione di ipoteca esattoriale per crediti di natura tributaria se posta in raffronto con la protezione in termini predisposta a beneficio di chi ricorra avverso i medesimi provvedimenti allorquando questi siano posti in essere per crediti di natura extratributaria.
Il terzo capitolo è dedicato all’esame della tutela cautelare nel processo tributario per i gradi di giudizio successivi al primo. Viene considerato in particolare l’art. 49 D.lgs. 546/92 e la multiforme interpretazione che di questa norma è stata fornita dalla dottrina e dalla giurisprudenza, in specie costituzionale.
Per ciascuna delle questioni affrontate si è provato, nel lavoro di tesi, laddove è parso possibile ed opportuno, a fornire personali spunti propositivi, in un’ottica di effettività della tutela giurisdizionale.
The FAST Galactic Plane Pulsar Snapshot survey: I. Project design and pulsar discoveries
Creators: name: Han, J. L.
name: Wang, Chen
name: Wang, P. F.
name: Wang, Tao
name: Zhou, D. J.
name: Sun, Jing-Hai
name: Yan, Yi
name: Su, Wei-Qi
name: Jing, Wei-Cong
name: Chen, Xue
name: Gao, X. Y.
name: Hou, Li-Gang
name: Xu, Jun
name: Lee, K. J.
name: Wang, Na
name: Jiang, Peng
name: Xu, Ren-Xin
name: Yan, Jun
name: Gan, Heng-Qian
name: Guan, Xin
name: Huang, Wen-Jun
name: Jiang, Jin-Chen
name: Li, Hui
name: Men, Yun-Peng
name: Sun, Chun
name: Wang, Bo-Jun
name: Wang, H. G.
name: Wang, Shuang-Qiang
name: Xie, Jin-Tao
name: Xu, Heng
name: Yao, Rui
name: You, Xiao-Peng
name: Yu, D. J.
name: Yuan, Jian-Ping
name: Yuen, Rai
name: Zhang, Chun-Feng
name: Zhu, Yan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Discovery of pulsars is one of the main goals for large radio telescopes. The Five-hundred-meter Aperture Spherical radio Telescope (FAST), that incorporates an L-band 19-beam receiver with a system temperature of about 20~K, is the most sensitive radio telescope utilized for discovering pulsars. We designed the {\it snapshot} observation mode for a FAST key science project, the Galactic Plane Pulsar Snapshot (GPPS) survey, in which every four nearby pointings can observe {\it a cover} of a sky patch of 0.1575 square degrees through beam-switching of the L-band 19-beam receiver. The integration time for each pointing is 300 seconds so that the GPPS observations for a cover can be made in 21 minutes. The goal of the GPPS survey is to discover pulsars within the Galactic latitude of $\pm10^{\circ}$ from the Galactic plane, and the highest priority is given to the inner Galaxy within $\pm5^{\circ}$. Up to now, the GPPS survey has discovered 201 pulsars, including currently the faintest pulsars which cannot be detected by other telescopes, pulsars with extremely high dispersion measures (DMs) which challenge the currently widely used models for the Galactic electron density distribution, pulsars coincident with supernova remnants, 40 millisecond pulsars, 16 binary pulsars, some nulling and mode-changing pulsars and rotating radio transients (RRATs). The follow-up observations for confirmation of new pulsars have polarization-signals recorded for polarization profiles of the pulsars. Re-detection of previously known pulsars in the survey data also leads to significant improvements in parameters for 64 pulsars. The GPPS survey discoveries are published and will be updated at http://zmtt.bao.ac.cn/GPPS/ .
description: 38 pages, 22 figures. See http://www.raa-journal.org/docs/Supp/2021Newsonline.pdf for News and Views
Yield and ultimate rotations of beam-to-column end-plate connections
Creators: name: Terracciano, Giusy
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: The deficiencies of traditional force-based design approaches and the recognition of the key-role of displacements and deformations as reliable and direct index of structural damage caused by earthquakes recently produced a shift in seismic design and assessment philosophy. In fact, new performance-based design requirements have strongly emerged internationally in seismic design and analysis. One design concept that was developed in response to these needs is currently known as “displacement-based” design (DBD). A large amount of work has already been undertaken in the field of displacement-based design especially for reinforced concrete structures. Recommendations for steel moment resisting frame (MRF) structures are few and the available proposals have not been fully confirmed. In this context, a research project – named DiSTEEL (Displacement based seismic design of STEEL moment resisting frame structures) and aiming to develop performance-based design guidelines for moment resisting steel frame structures – has been funded by the European Community. The DiSTEEL Project was the framework of the study presented in this thesis. In case of moment resisting steel frames, beam-to-column joints are essential structural components that significantly affect the overall seismic response. Therefore, a first step towards the development of DBD rules for MRFs is the analysis of response of beam-to-column joints with a focus on limit-state deformations.
Within the context briefly outlined, the focus of this work is on the features of the inelastic response of beam-to-column end-plate joints. The efforts are addressed to the development of simple yet reliable design equations and tools to predict joint rotations associated with selected limit-states. After a review of some available experimental data, an assessment of existing analytical models for predicting joint rotational stiffness and strength is presented. Using these analytical models the geometrical and material parameters mostly affecting the joint yield rotations are highlighted. Analytical predictions of yield rotations of both flush and extended end-plate joints are subsequently evaluated by comparison with experimental data. Once validated by such a comparison, the analytical tools are further developed for design purposes, in the form of design charts to be obtained by an automated application of the analysis tools. Finally, discussion and preliminary evaluation of the rotation capacity of extended end-plate joints are presented.
Desing and Simulation of Advanced Fiber Optic Sensors for High Energy Physics Application
Creators: name: Saccomanno, Andrea
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: In the last two decades, Fiber Bragg Grating (FBG) sensor were been widely studied and employed in temperature and strain sensing application. Due to their high potentiality in term of radiation hardness and EMI insensitivity, they constitute the ideal device to operate in harsh environments, under ionizing radiation and strong magnetic fields. This thesis work is focused on the research, development and simulation of novel sensors and monitoring systems suitable to operete in these environmental conditions.In particular, the monitoring applications regards room temperature of Compact Muon Solenoid (CERN), cryogenic temperature (up to 4.2 K) of the powerful cooling system of the LHC's superconducting magnets, and magnetic field with magnetostrictive and magneto-optic approaches.
Land and families in Horton Township, N.S., 1760-1830
Creators: name: McNabb, Debra Anne
Publisher: name: University of British Columbia
Year: 2010

description: In the 1760s, some 5,000 New Englanders established fourteen townships on the former Acadian farmlands of northern and western Nova Scotia and the sheltered bays and inlets of the colony's south shore. Drawn to the area by the promise of free land and access to cod-rich fishing banks, they 'founded both farming and fishing communities. Although the full treatment of New England settlement in Nova Scotia must consider both types of community, reconstructing the initial stages of settlement in an agricultural township serves as a beginning. Among the agricultural townships, Horton may be considered representative, if not typical. It was the focal point of the four Minas Basin townships which received the bulk of the New Englanders. It was among the first townships to be settled. Its resource base - dyke, upland, forest, and fish - was essentially the same as that of the other townships. The story of New Englanders at Horton raises fundamental questions about the process of settlement, the foundations of economy and society, the nature of the family and the evolution of the landscape. To explain how Horton's development unfolded, this thesis follows the lives of 89 men and their families who came to Horton as proprietors and after surviving the first years of hardship became the core of a permanent society. It covers the period from 1760 to 1830, from the time these grantees arrived in Horton until their deaths. The study focuses primarily on landholding and inheritance patterns and agricultural development and how they affected the lives of individuals and families and the evolution of community. It discovers that despite the relevant abundance of land in the new settlement, local landholding practices led to restricted access almost immediately. This had a profound effect on the fortunes of Horton families and the development of agriculture and community. This conclusion argues against existing theories of rural community development which maintain that land scarcity evolved only after several generations of increased population, partible inheritance, and extensive agricultural practices.
CONCORRENZA E MARCHI NEL FALLIMENTO E TEORIA DELL'INFORMAZIONE
Creators: name: Barbato, Anna
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: Il presente lavoro ha ad oggetto la crisi d’impresa, in particolare la dichiarazione del proprio fallimento in caso d’insolvenza ed ha come presupposto l’applicazione della teoria dell’informazione al diritto commerciale.Oggetto della ricerca sono state da un lato le condotte illecite degli imprenditori in crisi e dall’altro le condotte illecite delle imprese concorrenti a danno delle imprese in crisi prima e dopo il fallimento. Pertanto con riferimento al periodo anteriore al fallimento , oggetto di studio sono stati:
a)	l’occultamento dello stato di insolvenza.
b)	il depauperamento dell’avviamento con la svendita del marchio;
c)	la concorrenza sleale per confusione dell’impresa in crisi  a danno delle altre imprese del mercato.
d)	la concorrenza sleale delle altre imprese ai danni delle imprese in crisi.
Dopo la dichiarazione di fallimento i problemi che la tesi affronta sono :
a)	la tutela dell’avviamento da parte della curatela fallimentare:
b)	la revocatoria degli atti  di svendita dei marchi prima del fallimento.
Batch fabrication of cluster assembled microarrays for chemical sensing
Creators: name: Barborini, E.
name: Leccardi, M.
name: Bertolini, G.
name: Rorato, O.
name: Repetto, P.
name: Bandiera, D.
name: Gatelli, M.
name: Raso, A.
name: Garibbo, A.
name: Seminara, L.
name: Ducati, C.
name: Milani, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Deposition of clusters from the gas phase is becoming an enabling technology for the production of nanostructured devices. Supersonic clusters beam deposition (SCBD) has been shown as a viable route for the production of nanostructured thin films. By using SCBD and by exploiting aerodynamical effects typical of supersonic beams it is possible to obtain very high deposition rates with a control on neutral cluster mass distribution, allowing the deposition of thin films with tailored nanostructure. Due to high deposition rates, high lateral resolution, low temperature processing, SCBD can be used for the integration of cluster-assembled films on micro- and nanofabricated platforms with limited or no post-growth processing. Here we present the industrial opportunities for batch fabrication of gas sensor microarrays based on transition metal oxide nanoparticles deposited on microfabricated substrates.
description: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
The baryon density at z=0.9-1.9 - Tracing the warm-hot intergalactic medium with broad Lyman alpha absorption
Creators: name: Prause, N.
name: Reimers, D.
name: Fechner, C.
name: Janknecht, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of the Lyman alpha forests of five quasar spectra in the near UV. Properties of the intergalactic medium (IGM) at an intermediate redshift interval (0.9 < z < 1.9) are studied. The amount of baryons in the diffuse photoionised IGM and the warm-hot intergalactic medium (WHIM) are traced to get constraints on the redshift evolution of the different phases of the intergalactic gas. The baryon density of the diffuse IGM is determined with photoionisation calculations under the assumption of local hydrostatic equilibrium. We assume that the gas is ionised by a metagalactic background radiation with a Haardt & Madau (2001) spectrum. The WHIM is traced with broad Lyman alpha (BLA) absorption. The properties of a number of BLA detections are studied. Under the assumption of collisional ionisation equilibrium a lower limit to the baryon density could be estimated. It is found that the diffuse photoionised IGM contains at least 25% of the total baryonic matter at redshifts 1 < z < 2. For the WHIM a lower limit of 2.4% could be determined. Furthermore the data indicates that the intergalactic gas is in a state of evolution at z=1.5. We confirm that a considerable part of the WHIM is created between z=1 and z=2.
description: 6 pages, 1 figure, accepted for publication in A&A
Spin correlations and cobalt charge states: A new phase diagram of sodium cobaltates
Creators: name: Lang, G.
name: Bobroff, J.
name: Alloul, H.
name: Collin, G.
name: Blanchard, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using 23Na NMR measurements on sodium cobaltates at intermediate dopings (0.44<=x<=0.62), we establish the qualitative change of behavior of the local magnetic susceptibility at x*=0.63-0.65, from a low x Pauli-like regime to the high x Curie-Weiss regime. For 0.5<=x<=0.62, the presence of a maximum T* in the temperature dependence of the susceptibility shows the existence of an x-dependent energy scale. T_1 relaxation measurements establish the predominantly antiferromagnetic character of spin correlations for xx*. It is suggested that at a given x the ferromagnetic correlations might dominate the antiferromagnetic ones above T*. From 59Co NMR data, it is shown that moving towards higher x away from x=0.5 results in the progressive appearance of nonmagnetic Co3+ sites, breaking the homogeneity of Co states encountered for x<=0.5. The main features of the NMR-detected 59Co quadrupolar effects, together with indications from the powder x-ray diffraction data, lead us to sketch a possible structural origin for the Co3+ sites. In light of this ensemble of new experimental observations, a new phase diagram is proposed, taking into account the systematic presence of correlations and their x-dependence.
description: 12 pages, 11 figures
Effect of spatial resolution on the estimates of the coherence length of excitons in quantum wells
Creators: name: Fogler, M. M.
name: Yang, Sen
name: Hammack, A. T.
name: Butov, L. V.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We evaluate the effect of diffraction-limited resolution of the optical system on the estimates of the coherence length of 2D excitons deduced from the interferometric study of the exciton emission. The results are applied for refining our earlier estimates of the coherence length of a cold gas of indirect excitons in coupled quantum wells [S. Yang et al., Phys. Rev. Lett. 97, 187402(2006)]. We show that the apparent coherence length is well approximated by the quadratic sum of the actual exciton coherence length and the diffraction correction given by the conventional Abbe limit divided by 3.14. In practice, accounting for diffraction is necessary only when the coherence length is smaller than about one wavelength. The earlier conclusions regarding the strong enhancement of the exciton coherence length at low temperatures remain intact.
description: 6 pages, 5 figures
Dispersion Impact on Ballistic CNTFET n+-i-n+ Performances
Creators: name: Desgreys, P.
name: Da Silva, J. Gomes
name: Robert, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The designs integrating the promising carbon nanotube transistors (CNTFET) will have to take into account the constraints implied by the strong dispersion inherent to nanotube manufacturing. This paper proposes to characterize the main CNTFET performances : on-current Ion, Ion/Ioff ratio and inverse sub-threshold slope S according to the dispersion on the nanotube diameter. For this purpose, we use a compact model suitable for testing several diameter values.
description: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
Relativistic BCS-BEC Crossover at Finite Temperature and Its Application to Color Superconductivity
Creators: name: He, Lianyi
name: Zhuang, Pengfei
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The non-relativistic $G_0 G$ formalism of BCS-BEC crossover at finite temperature is extended to relativistic fermion systems. The uncondensed pairs contribute a pseudogap to the fermion excitations. The theory recovers the BCS mean field approximation at zero temperature and the non-relativistic results in a proper limit. For massive fermions, when the coupling strength increases, there exist two crossovers from the weak coupling BCS superfluid to the non-relativistic BEC state and then to the relativistic BEC state. For color superconductivity at moderate baryon density, the matter is in the BCS-BEC crossover region, and the behavior of the pseudogap is quite similar to that found in high temperature superconductors.
description: 13 pages, 7 figures. V2: comparision with other theories and new results on color superconductivity are added. V3: version published in PRD
Partial teleportation of entangled atomic states
Creators: name: Cardoso, W. B.
name: de Almeida, N. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we propose a scheme for partially teleporting entangled atomic states. Our scheme can be implemented using only four two-level atoms interacting either resonantly or off-resonantly with a single cavity-QED. The estimative of losses occurring during this partial teleportation process is accomplished through the phenomenological operator approach technique.
description: 4 pages, 3 figures
Valuing traditional activities in the northern native economy : the case of Old Crow, Yukon Territory
Creators: name: Murphy, Sheilagh C.
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of the research is to develop a widely acceptable and more holistic method for valuing traditional activities in a northern native community. It does this by extending contemporary valuation methods to include native categories and perceptions of natural resources, both past and present. The community of Old Crow, Yukon Territory is used as the field site because it is a relatively stable community, closely linked to the land, and one for which historical material is available. Any assessment of a contemporary native community, its people, and their relationships to the land and its bounty would not be complete without an examination of their history. Thus, the thesis recounts the history of the Kutchin Indians of Old Crow. By reviewing past situations, traditions and cultural beliefs, the present day place of the land and its resources in the lives of the Old Crow people is revealed. Contemporary valuation methods are defined as those which emphasize valuing resources numerically using a specific type of quantitative information. The more holistic method, on the other hand, includes the examination of the 'value'1 assigned traditional activities by the people themselves as exemplified through past and present situations. The ultimate goal of this work is to show that static quantitative analyses must be balanced with research into the more social side of native activities if their true value is to be found. The thesis shows that contemporary valuation methods continually underestimate the 'value' of production from the land because they are usually limited in time and scope, and fail to deal with the non-market 'values' the land and its bountry hold for native northerners. It is discovered that comparing data collected at different points in time is a very effective means of precipitating out those 'values' which influence native people in making choices about the pursuit of traditional activities in the north. Using this method the land and its resources as perceived by the Old Crow people are shown to still hold a paramount place in their day to day lives. As with other northern native groups, even though material opportunities and hunting strategies have changed, the people continue to value their traditional land and life for a variety of reasons. While the thesis identifies the various 'values' associated with productive activities in Old Crow, it does not develop a scheme that quantifies or ranks the relative worth of these 'values'. It discusses the merit of the concept in the context of valuing activities in the traditional economy of the north, and concludes that much research is still required in this area.
Formation of hydrogen impurity states in silicon and insulators at low implantation energies
Creators: name: Prokscha, T.
name: Morenzoni, E.
name: Eshchenko, D. G.
name: Garifianov, N.
name: Glueckler, H.
name: Khasanov, R.
name: Luetkens, H.
name: Suter, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The formation of hydrogen-like muonium (Mu) has been studied as a function of implantation energy in intrinsic Si, thin films of condensed van der Waals gases (N2, Ne, Ar, Xe), fused and crystalline quartz and sapphire. By varying the initial energy of positive muons (mu+) between 1 and 30 keV the number of electron-hole pairs generated in the ionization track of the mu+ can be tuned between a few and several thousand. The results show the strong suppression of the formation of those Mu states that depend on the availability of excess electrons. This indicates, that the role of H-impurity states in determining electric properties of semiconductors and insulators depends on the way how atomic H is introduced into the material.
description: 4 pages, 4 enscapulated postscript figures, uses revtex4 twocolumn style to be published in Physical Review Letters
Growth Mechanism and Selective Synthesis of SWNTs
Creators: name: Inoue, S.
name: Nakajima, T.
name: Nomura, K.
name: Kikuchi, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ever since the landmark discovery of single-walled carbon nanotubes (SWNTs) in 1993, they have been considered as ideal materials for any kind of application based on their outstanding properties (e.g. mechanical strength, thermal conductivity, ultra stability, etc.), and various techniques, including laser furnace technique, arc discharge technique, and recently, Catalytic Chemical Vapor Deposition (CCVD) technique, have been developed for the high-quality macroscopic generation. Recently Hata et al. realized the macroscopic production after great efforts of many scientists ; however, the growth mechanisms are still unclear and this incomplete knowledge prevents us from applying SWNTs to any fields. Here we can partially control the diameter distribution of SWNTs using Alcohol Catalytic CVD (ACCVD) technique and well combined catalysts. Their diameter is quite depend on the size of catalyst and their species, that is why this can be a technique to control SWNTs, and finally we propose the simple growth model.
description: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
title: Policy interpreted
title: the effect of local authority administration and officer perception and
      practice on national home-education policy implementation
titleType: Subtitle
Creators: name: Mukwamba-Sendall, Fe
Publisher: name: Lancaster University
Year: 2019
Subjects: Home education, home schooling, policy implementation, England

description: Home-education is enshrined in State legislation and statutory guidance,
      which is administered by local authorities (LA) and implemented by their
      officers. Home-education engenders concern. Stakeholder critics allude to
      risks for children ranging from educational or psychological harm to
      physical neglect or abuse. Accusations, which lack evidenced based
      research, problematise home-education creating suspicion which impacts on
      LA administrator and officer implementer. This is observable in their
      beyond-legal authority practices. This research examines LA administration
      of State policy ‘strategies’ through Freedom of Information questionnaire
      responses and documentary evidence (webpages, literature, and officer job
      descriptions). Interviews examine influences on officer perceptions which
      impact on their implementation practices. Interviews with home-education
      advocates provide insight into outcomes of LA administration and officer
      implementation. The study is sited within Implementation Theory,
      specifically Street Level Bureaucrats, Lipsky, 1969, 1971, 1980, 2010;
      Implementation Staircase, Reynolds and Saunders, 1987; and Communities of
      Practice, Wenger, 1998, 2006, 2010. Conclusions are drawn through the
      adoption of a thematic analysis approach. There is a marked lack of
      homogeneity in the implementation of State policy at local level, with
      policies and practices varying between different local authorities and
      individual officers. There is discord in the opinions of stakeholder
      commentators, academics, professionals and EHE advocates regarding
      specific concerns of, educational suitability, registration, monitoring,
      visits, and safeguarding. State strategy becomes redefined resulting in
      hybrid local policies visible in LA administration and officer
      implementation practices which imply powers or legal authority that they
      do not have. Such changes constitute a degradation of State strategy.
      Locally adopted policy stimulates a precedent of practice, whereby
      intended State strategy becomes redefined during the delegated process of
      implementation.
$^{77}$Se NMR investigation of the field-induced spin-density-wave transitions in (TMTSF)$_2$ClO$_4$
Creators: name: Lumata, L. L.
name: Brooks, J. S.
name: Kuhns, P. L.
name: Reyes, A. P.
name: Brown, S. E.
name: Cui, H. B.
name: Haddon, R. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Complementary $^{77}$Se nuclear magnetic resonance (NMR) and electrical transport have been used to correlate the spin density dynamics with the subphases of the field-induced spin density wave (FISDW) ground state in \tmt. We find that the peaks in the spin-lattice relaxation rate 1/T$_1$ appear within the metal-FISDW phase boundary and/or at first-order subphase transitions. In the quantum limit above 25 T, the NMR data gives an insight into the FISDW electronic structure.
description: 5 pages, 4 figures
03 Worldviews and National Values in Swedish, Norwegian and Finnish Early Childhood Education and Care Curricula
Creators: name: Kuusisto, Arniika
name: Poulter, Saila
name: Harju-Luukkainen, Heidi
Publisher: name: Monash University
Year: 2021
Subjects: subject: 130102 Early Childhood Education (excl. Maori)
subject: FOS: Educational sciences

description: This paper examines how worldviews and national values are displayed in the national (Early Childhood Education and Care (ECEC) curricula of Sweden, Finland and Norway. The specific interest is to investigate what similarities and differences there are between these three ECEC curricula with regard to the position of religions and other worldviews. ECEC is often the first societal arena for children to enter and to negotiate their personal values, worldviews, and memberships in relation to the values represented in the surrounding social context. Countries employ different policies for dealing with diversity. Home languages for example, are often supported whereas for home cultures and worldviews, the policies and practices are more varied across contexts. By utilising a curriculum analysis informed content analysis, this study examines the curricular ECEC framework in each country context, highlighting the displayed national value preferences connected to worldviews. The study shows that these three Nordic countries have both similarities but also significant differences in the ways in which they approach the inter-relatedness of the aims of national values and worldview.
On Liouville-type theorems for the 2D stationary MHD equations
Creators: name: De Nitti, Nicola
name: Hounkpe, Francis
name: Schulz, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We establish new Liouville-type theorems for the two-dimensional stationary magneto-hydrodynamic incompressible system assuming that the velocity and magnetic field have bounded Dirichlet integral. The key tool in our proof is observing that the stream function associated to the magnetic field satisfies a simple drift-diffusion equation for which a maximum principle is available.
description: 15 pages
Undetected Higgs decays and neutrino masses in gauge mediated, lepton number violating models
Creators: name: Banks, Tom
name: Carpenter, Linda M.
name: Fortin, Jean-François
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss SUSY models in which renormalizable lepton number violating couplings hide the decay of the Higgs through h -> χ_1^0 + χ_1^0 followed by χ_1^0 -> τ+ 2 jets or χ_1^0 -> ν_τ+ 2 jets and also explain neutrino masses. This mechanism can be made compatible with gauge mediated SUSY breaking.
description: JHEP Latex, 18 pages, 1 figure
Numerical Simulation of The Mechanical Properties of Carbon Nanotube Using the Atomistic-Continuum Mechanics
Creators: name: Wu, C. -J.
name: Chou, C. -Y.
name: Han, C. -N.
name: Chiang, K. -N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This paper the utilizes atomistic-continuum mechanics (ACM) to investigate the mechanical properties of single-walled carbon nanotubes (SWCNTs). By establishing a linkage between structural mechanics and molecular mechanics, not only the Young's moduli could be obtained but also the modal analysis could be achieved. In addition, according to atomistic-continuum mechanics and finite element method, an effective atomistic-continuum model is constructed to investigate the above two mechanical properties of SWCNTs with affordable computational time by personal computers. The validity of the results is demonstrated by comparing them with existing results.
description: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
title: Interventions infirmières efficientes dans la prise en soins des patients borderline en crise suicidaire
title: Interventions infirmières efficientes dans la prise en soins des patients borderline en crise suicidaire
titleType: AlternativeTitle
Creators: name: Aveni, Bénédicte
name: Bonnet, Claire
Publisher: name: Unknown
Year: 0
Subjects: subject: trouble de la personnalité borderline
subject: suicide
subject: rôle infirmier

description: Problématique : Le suicide est un problème majeur de santé publique. Le trouble de la personnalité borderline est fréquent et figure parmi les troubles psychiatriques les plus à risque suicidaire. L’infirmier, professionnel en première ligne du patient, a un rôle central dans la gestion des symptômes de la crise suicidaire. Objectif : Cette revue de littérature a pour objectif d’identifier des interventions infirmières efficientes pour l’accompagnement des patients borderline en crise suicidaire. Méthodologie : Critères d’inclusion : Individus touchés par un trouble de la personnalité borderline adultes sans comorbidité, traversant une crise suicidaire ; Type interventions : Infirmières ; Type résultats : Études dès 2007, menées dans des contextes de soins similaires, aboutissant sur des interventions. Stratégie de recherche : Deux bases de données ont été consultées, PubMed et CINHAL. 6 articles ont été identifiés permettant de répondre à la question de recherche. Synthèse des données : Les grilles de lecture critique de Fortin et Gagnon (2016) et la théorie de la gestion des symptômes ont permis d’analyser les résultats. Résultats : L’établissement d’une alliance thérapeutique avec le soignant et le soutien des pairs, la reprise de responsabilités, l’évaluation du contexte de l’auto-mutilation et le renforcement du développement personnel par différentes techniques provenant de divers types de thérapies sont les principales interventions à fournir auprès du patient borderline suicidaire. Discussion : Contrairement à la réputation très complexe de ces patients, certains traitements ont prouvé leur efficacité. Des recherches supplémentaires sur ce sujet sont néanmoins nécessaires, peu d’études traitent de cette problématique majeure, sont trop peu spécifiques au rôle infirmier, difficilement applicables en contexte de crise et affiliées à un paradigme de soins spécifique.