WorldWideScience

Sample records for laps pesuveega alla

  1. Dal caos... alla coscienza

    CERN Document Server

    Prattico, Franco

    1989-01-01

    Attraverso i domini della fisica, della genetica e della biologia, fino alle neuroscienze, alla ricerca dei percorsi che hanno portato alla nascita del cervello umano : frutto di una singolare serie casuale o di una necessità inscritta nelle leggi del Cosmo?

  2. The LapSlapper

    DEFF Research Database (Denmark)

    Andresen, Mads Stenhøj; Bach, Morten; Kristensen, Kristian Ross

    2010-01-01

    The LapSlapper is an inexpensive and low-technology percussive instrument with a digital interface. In a tactile and embodied manner it allows enhanced control and promotes expressive creativity when operating with percussive elements in digital environments. By using piezo-microphones, mounted o...

  3. Alla scoperta della crittografia quantistica

    CERN Document Server

    Filoramo, Eva; Pasquero, Claudia

    2006-01-01

    La crittografia si sviluppa e perfeziona per rispondere all'esigenza di segretezza nella trasmissione delle informazioni. La crittografia quantistica consente, al contrario di quella correntemente usata, di inviare messaggi che non potranno essere decifrati e di vanificare al massimo i tentativi di una loro intercettazione. Partendo dalla storia dei codici segreti, il libro affronta gli sviluppi pertinenti della teoria quantistica, per approdare infine alla più avanzata ricerca scientifica e tecnologica. Lo scopo è quello di richiamare l'attenzione su un tema le cui applicazioni pratiche coprono molti settori d'interesse strategico e sono destinate, nel prossimo futuro, a rivoluzionare i metodi di scambio delle informazioni.

  4. Lap belt injuries in children.

    LENUS (Irish Health Repository)

    McGrath, N

    2010-07-01

    The use of adult seat belts without booster seats in young children may lead to severe abdominal, lumbar or cervical spine and head and neck injuries. We describe four characteristic cases of lap belt injuries presenting to a tertiary children\\'s hospital over the past year in addition to a review of the current literature. These four cases of spinal cord injury, resulting in significant long-term morbidity in the two survivors and death in one child, arose as a result of lap belt injury. These complex injuries are caused by rapid deceleration characteristic of high impact crashes, resulting in sudden flexion of the upper body around the fixed lap belt, and consequent compression of the abdominal viscera between the lap belt and spine. This report highlights the dangers of using lap belts only without shoulder straps. Age-appropriate child restraint in cars will prevent these injuries.

  5. Rahakott liigub mikrokiibina naha alla / Askur Alas

    Index Scriptorium Estoniae

    Alas, Askur, 1973-

    2003-01-01

    Pariisis toimunud tuleviku turvatehnoloogiatele pühendatud konverentsil teatas Applied Digital Solutionsi tegevjuht, et firma kavatseb lähiajal hakata pakkuma teenust, kus naha alla paigutatav VeriChipi kiip hakkab täitma maksekaardi rolli

  6. Cashier/Checker Learning Activity Packets (LAPs).

    Science.gov (United States)

    Oklahoma State Dept. of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

    Twenty-four learning activity packets (LAPs) are provided for six areas of instruction in a cashier/checker program. Section A, Orientation, contains an LAP on exploring the job of cashier-checker. Section B, Operations, has nine LAPs, including those on operating the cash register, issuing trading stamps, and completing the cash register balance…

  7. Dall’estetica alla teoria. Note sulla transestetica della letteratura

    Directory of Open Access Journals (Sweden)

    Lorenzo Oropallo

    2012-12-01

    Full Text Available  Come ha messo in rilievo Paul De Man, la teoria della letteratura nasce insieme alla letteratura stessa, dunque a partire dal primo romanticismo tedesco e la sua riflessione intorno alla natura dell'arte. In questo senso, la teoria letteraria non si oppone alla pratica della scrittura, ma alla sua estetica, che quindi è necessario superare.

  8. Nanometer lapping technology at high speed

    Institute of Scientific and Technical Information of China (English)

    YANG JianDong; TIAN ChunLin; WANG ChangXing

    2007-01-01

    In floating lapping with solid abrasives, the workpiece is taken as an isolated body. The forces that act on it are analyzed. A differential equation about the forces that act on it is set up, so the forces that act on it and its motion rule are received. Combining it with known lapping tool motion, the relative motion rule between the lapping tool and workpiece is determined too. According to the relative motion, the distribution of abrasives density is designed reasonably, which makes the lapping tool wear uniformly, which, in turn, avoids redressing the lapping tool, saves abrasives, and increases machining accuracy. Combining it with advantages in high speed lapping with solid abrasives, the low cost, high efficiency nanometer lapping at high speed is realized.

  9. Nanometer lapping technology at high speed

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    In floating lapping with solid abrasives, the workpiece is taken as an isolated body. The forces that act on it are analyzed. A differential equation about the forces that act on it is set up, so the forces that act on it and its motion rule are received. Combining it with known lapping tool motion, the relative motion rule between the lapping tool and workpiece is determined too. According to the relative motion, the distribution of abrasives density is designed reasonably, which makes the lapping tool wear uniformly, which, in turn, avoids redressing the lapping tool, saves abra-sives, and increases machining accuracy. Combining it with advantages in high speed lapping with solid abrasives, the low cost, high efficiency nanometer lapping at high speed is realized.

  10. GLI INCERTI SCENARI DEL DIRITTO ALLA SALUTE

    Directory of Open Access Journals (Sweden)

    Vincenzo Durante

    2013-01-01

    Full Text Available Tra i diritti sociali, sviluppatisi in Europa nel dopoguerra, ed in particolare dalla metà degli anni ’60, il cosiddetto “diritto alla salute” riveste una particolare importanza, a causa della grande espansone che ha avuto negli ultimi decenni.

  11. Prokuratuur : Savisaar sai suvila alla turuhinna

    Index Scriptorium Estoniae

    2006-01-01

    Kuigi Riigiprokuratuur lõpetas AS-i Kalev REC kinnisvaratehingute uurimise, leidmata selles kuritegu, tuvastati ekspertiisi käigus, et Keila-Joal paiknevad kinnistud müüdi OÜ-le Fixor Holding ja OÜ-le Marriot alla turuhinna

  12. Il rumore elettrico Dalla fisica alla progettazione

    CERN Document Server

    Pallottino, Giovanni Vittorio

    2011-01-01

    L’opera fornisce una trattazione chiara, agile ed essenziale, ma completa, del rumore elettrico, argomento considerato generalmente oscuro e specialistico. Molto più breve (circa 275mila battute) dei testi attualmente disponibili. Il contenuto copre gli aspetti essenziali della matematica e della fisica del rumore (termico, shot. 1/f, …), e della sua rappresentazione nei circuiti. Discute quindi il rumore nei dispositivi passivi e attivi, e introduce i criteri di progettazione a basso rumore. Affronta infine brevemente questioni quali l’estrazione del segnale dal rumore e gli impieghi utili del rumore. L’attenzione è generalmente rivolta alla strumentazione fisica a bassa frequenza, in relazione alla pluridecennale esperienza specifica dell’autore. Si tratta di una estensione delle dispense, utilizzate per anni, di un corso universitario. Pertanto la trattazione è fortemente didattica, con particolare attenzione a rimuovere ambiguità e incertezze, discutendo il materiale in termini fisici intuit...

  13. Tzvetan Todorov: dalla scienza alla letteratura

    Directory of Open Access Journals (Sweden)

    Vladislav Tretyakov

    2014-05-01

    Full Text Available Nell'introduzione viene dato un saggio bibliografico sul Tzvetan Todorov "russo". Il grado di assimilazione, se non di notorietà, della sua opera in Russia rimane esiguo, fatto sorprendente per una serie di ragioni, tra le quali vanno annoverate le origini e la biografia di Todorov, il grande interesse degli umanisti russi per la teoria occidentale e il boom traduttivo degli ultimi decenni in Russia. Il lavoro principale di Todorov per le scienze umane russe rimane il suo articolo degli inizi "Che cos'è la letteratura"?Nella parte principale dell'articolo viene esaminata l'evoluzione delle idee scientifiche di Todorov, che negli anni 1960-1970 è stato una delle figure principali dello strutturalismo, mentre col tempo è diventato un oppositore della teoria. L'approccio del tardo Todorov alla letteratura viene esaminato sulla base del suo articolo "Per che cosa esiste la letteratura?" (2007 e dell'intervista rilasciata alla rivista russa "Questioni di letteratura" ("Voprosy literatury" nel 2006. Il suo cammino dall'idea di letteratura come semiosis all'idea di letteratura come mathesis, dalle ricerche di una definizione strutturale della letteratura a quelle di una sua definizione funzionale – un iter che, usando la formula di Roland Barthes, potrebbe essere definito, appunto, "dalla scienza alla letteratura" – viene paragonato con l'evoluzione dello stesso Barthes (molto più noto in Russia di Todorov. È interessante notare, a questo proposito, che Barthes è stato il maestro di Todorov e che, pur considerando già impossibile l'esistenza di un discorso scientifico sulla letteratura, valutava molto positivamente i lavori di teoria letteraria dell'allievo.La traiettoria tracciata nell'articolo non accomuna solo questi due autori ed è in un certo senso tipica della teoria contemporanea.

  14. Giudici e legislatori di fronte alla multiculturalità

    Directory of Open Access Journals (Sweden)

    Elisa Olivito

    2011-05-01

    Full Text Available Il contributo è destinato alla pubblicazione nel volume “La tutela dei diritti fondamentali tra diritto politico e diritto giurisprudenziale: ‘casi difficili’ alla prova”, a cura di M. Cavino, C. Tripodina, 2011.SOMMARIO: 1. A mo' di introduzione: diritto giudiziario e diritto legislativo - 2. Legislazione e giurisdizione nelle società pluraliste - 3. Giudici e legislatori alla prova della multiculturalità - 4. Segue: il caso dei simboli religiosi - 5. Giudici-antropologi e legislatori paternalisti: cultural defense, leggi manifesto, eguaglianza di genere - 6. Chi decide delle culture?

  15. Muinsuskaitsjad võtaks Sakala ajutise kaitse alla / Vahur Koorits

    Index Scriptorium Estoniae

    Koorits, Vahur, 1981-

    2006-01-01

    Muinsuskaitse nõukogu juures tegutseva arhitektuurimälestiste ekspertnõukogu ettepanekust võtta Tallinna kesklinnas asuv Sakala keskus ajutise kaitse alla. Hoone interjööri säilitamisest, kommenteerivad Kalev Uustalu, Raivo Palmaru

  16. Arhitektid võtavad Admiraliteedi basseini kaitse alla

    Index Scriptorium Estoniae

    2007-01-01

    Eesti Arhitektide Liit näeb uue linnakeskuse jaoks parima kohana endiselt Admiraliteedi basseini ümbruskonda ning soovib selle kaitse alla võtta. EAL esitas oma ettepanekud linnavalitsusele jaanuari alguses

  17. Alla Jukš-Meos ilmutas laste luuleraamatu / Silja Joon

    Index Scriptorium Estoniae

    Joon, Silja, 1966-

    2010-01-01

    Alla Jukš-Meos esitles oma lasteraamatut "Vanaema aabits", mis on ilmunud nii eesti- kui venekeelsena ja mõeldud lastele tähtede õppimiseks. Ka tema novellikogust "Elu enda poolt kirjutatud novellid" ja luulekogust "Armastuse tango"

  18. Notebook computer use on a desk, lap and lap support: effects on posture, performance and comfort.

    Science.gov (United States)

    Asundi, Krishna; Odell, Dan; Luce, Adam; Dennerlein, Jack T

    2010-01-01

    This study quantified postures of users working on a notebook computer situated in their lap and tested the effect of using a device designed to increase the height of the notebook when placed on the lap. A motion analysis system measured head, neck and upper extremity postures of 15 adults as they worked on a notebook computer placed on a desk (DESK), the lap (LAP) and a commercially available lapdesk (LAPDESK). Compared with the DESK, the LAP increased downwards head tilt 6 degrees and wrist extension 8 degrees . Shoulder flexion and ulnar deviation decreased 13 degrees and 9 degrees , respectively. Compared with the LAP, the LAPDESK decreased downwards head tilt 4 degrees , neck flexion 2 degrees , and wrist extension 9 degrees. Users reported less discomfort and difficulty in the DESK configuration. Use of the lapdesk improved postures compared with the lap; however, all configurations resulted in high values of wrist extension, wrist deviation and downwards head tilt. STATEMENT OF RELEVANCE: This study quantifies postures of users working with a notebook computer in typical portable configurations. A better understanding of the postures assumed during notebook computer use can improve usage guidelines to reduce the risk of musculoskeletal injuries.

  19. 49 CFR 230.30 - Lap-joint seam boilers.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Lap-joint seam boilers. 230.30 Section 230.30..., DEPARTMENT OF TRANSPORTATION STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS Boilers and Appurtenances Inspection and Repair § 230.30 Lap-joint seam boilers. Every boiler having lap-joint longitudinal...

  20. Lap belts and three-point belts.

    NARCIS (Netherlands)

    Kampen, L.T.B. van & Edelman, A.

    1975-01-01

    Results of the swov-accident investigation prove that if there are any differences in the effectiveness of lap belts and three-point belts, these are so small that they cannot form a basis for giving preference to one type over the other. Furthermore, in spite of the results of this investigation wh

  1. L’italiano alla prova del Bac

    Directory of Open Access Journals (Sweden)

    Giulia Massignan

    2013-07-01

    Full Text Available Il lavoro propone alcune attività didattiche di preparazione dell’esame orale di italiano previsto dal Baccalauréat del liceo francese. Tale prova d’esame è stata recentemente oggetto di una riforma ministeriale volta a dare maggior peso alla pratica orale. Dopo uno studio delle nuove modalità della prove d’esame e dei suoi contenuti, ci si concentrerà sull’analisi delle abilità orali necessarie al suo superamento e sugli elementi linguistici e comunicativi su cui porre l’attenzione. Sulla base di queste premesse teoriche e metodologiche, si presentano alcuni interventi didattici di preparazione all’esame: due attività per la prova di comprensione orale e due per la prova di produzione e interazione orale; in entrambi i casi, si insiste sull’importanza di proporre strategie d’ascolto e di parlato insegnabili, che diventino consuetudini attive e parte integrante del bagaglio comunicativo del discente. The italian exam in the FrenchBacThe paper proposes some educational activities to prepare for the oral Italian examination as part of the French Baccalauréat. This exam has recently been the subject of a ministerial reform aimed at giving more weight to the oral practice. After illustrating new examination methods and content, we will focus on the analysis of oral skills necessary for passing the exam and aspects of language and communication on which to focus. Based on these theoretical and methodological premises, some educational exam preparation activities will be presented. Two activities test listening comprehension and two focus on production and oral interaction. The stress is on the importance of proposing teach able listening and speaking strategies, so that they become active habits and integral parts of the communicative learner’s baggage.

  2. Homologs of the LapD-LapG c-di-GMP Effector System Control Biofilm Formation by Bordetella bronchiseptica

    Science.gov (United States)

    Ambrosis, Nicolás; Boyd, Chelsea D.; O´Toole, George A.; Fernández, Julieta; Sisti, Federico

    2016-01-01

    Biofilm formation is important for infection by many pathogens. Bordetella bronchiseptica causes respiratory tract infections in mammals and forms biofilm structures in nasal epithelium of infected mice. We previously demonstrated that cyclic di-GMP is involved in biofilm formation in B. bronchiseptica. In the present work, based on their previously reported function in Pseudomonas fluorescens, we identified three genes in the B. bronchiseptica genome likely involved in c-di-GMP-dependent biofilm formation: brtA, lapD and lapG. Genetic analysis confirmed a role for BrtA, LapD and LapG in biofilm formation using microtiter plate assays, as well as scanning electron and fluorescent microscopy to analyze the phenotypes of mutants lacking these proteins. In vitro and in vivo studies showed that the protease LapG of B. bronchiseptica cleaves the N-terminal domain of BrtA, as well as the LapA protein of P. fluorescens, indicating functional conservation between these species. Furthermore, while BrtA and LapG appear to have little or no impact on colonization in a mouse model of infection, a B. bronchiseptica strain lacking the LapG protease has a significantly higher rate of inducing a severe disease outcome compared to the wild type. These findings support a role for c-di-GMP acting through BrtA/LapD/LapG to modulate biofilm formation, as well as impact pathogenesis, by B. bronchiseptica PMID:27380521

  3. Dogs lap using acceleration-driven open pumping.

    Science.gov (United States)

    Gart, Sean; Socha, John J; Vlachos, Pavlos P; Jung, Sunghwan

    2015-12-29

    Dogs lap because they have incomplete cheeks and cannot suck. When lapping, a dog's tongue pulls a liquid column from the bath, suggesting that the hydrodynamics of column formation are critical to understanding how dogs drink. We measured lapping in 19 dogs and used the results to generate a physical model of the tongue's interaction with the air-fluid interface. These experiments help to explain how dogs exploit the fluid dynamics of the generated column. The results demonstrate that effects of acceleration govern lapping frequency, which suggests that dogs curl the tongue to create a larger liquid column. Comparing lapping in dogs and cats reveals that, despite similar morphology, these carnivores lap in different physical regimes: an unsteady inertial regime for dogs and steady inertial regime for cats.

  4. Kaks stalinistlikku hoonet võetakse muinsuskaitse alla / Siiri Suutre

    Index Scriptorium Estoniae

    Suutre, Siiri

    2007-01-01

    Seoses Tallinnas Estonia ja Rävala puiestee vahelise kvartali detailplaneeringu koostamisega (K-Projekt, Elise Urva) ja arendajate sooviga teha hoonetele juurde- ja ümberehitusi, soovitavad eksperdid Estonia pst. 7 ja Rävala pst. 10 hoonete muinsuskaitse alla võtmist

  5. Evaluation of the single part lapping station pressure control system

    Energy Technology Data Exchange (ETDEWEB)

    Mentesana, C.P.

    1979-01-01

    The electro-pneumatic pressure control system of a single part lapping station was evaluated to determine operating characteristics and to establish operating procedures and the suitability of control loop components. The effects of variations in upstream pressure, bleed valve opening, lap head clearance, control valve position, and system leaks on steady-state gain and system stability were investigated. Operating methods were established for adjusting machine parameters to linearize steady-state gain over the entire design pressure range. Component changes and additions were recommended for improved system performance. Limits on lap head clearance based on lap head discharge coefficients were established.

  6. Cloned s-Lap Gene Coding Area, Expression and Localizationof s-Lap/GFP Fusion Protein in Mammal Cells

    Institute of Scientific and Technical Information of China (English)

    SONG Yi-shu; SONG Zhi-yu; LI Hong-jun; Wu Yin; BAO Yong-li; TAN Da-peng; LI Yu-xin

    2005-01-01

    s-Lap is a new gene sequence from pig retinal pigment epithelial(RPE) cells, which was found and cloned in the early period of apoptosis of RPE cells damaged with visible light. We cloned the coding area sequence of the novel gene of s-Lap and constructed its recombinant eukaryotic plasmid pcDNA3.1-GFP/s-lap with the recombinant DNA technique. The expression and localization of s-lap/GFP fusion protein in CHO and B16 cell lines were studied with the instantaneously transfected pcDNA3.1-GFP/s-lap recombinant plasmid. s-Lap/GFP fusion protein can be expressed in CHO and B16 cells with a high rate expression in the nuclei.

  7. Bending behavior of lapped plastic ehv cables

    Energy Technology Data Exchange (ETDEWEB)

    Morgan, G H; Muller, A C

    1980-01-01

    One of the factors delaying the development of lapped polymeric cables has been their reputed poor bending characteristics. Complementary programs were begun at BNL several years ago to mathematically model the bending of synthetic tape cables and to develop novel plastic tapes designed to have moduli more favorable to bending. A series of bend tests was recently completed to evaluate the bending performance of several tapes developed for use in experimental superconducting cables. The program is discussed and the results of the bend tests are summarized.

  8. Oxytocin hypersensitivity in pregnant P-LAP deficient mice.

    Science.gov (United States)

    Ishii, Masakazu; Naruse, Katsuhiko; Hattori, Akira; Tsujimoto, Masafumi; Ishiura, Shoichi; Numaguchi, Yasushi; Murohara, Toyoaki; Kobayashi, Hiroshi; Mizutani, Shigehiko

    2009-05-08

    Oxytocin (OT) is the strongest uterotonic substance and has been used widely to induce labor. The physiological importance of OT in modulating the initiation and progression of labor remains unclear. In this study, we showed the roles of OT with onset of labor and also the arginine vasopressin (AVP) effect on urine volume in vivo using both wild type (WT) and placental leucine aminopeptidase (P-LAP)-deficient (KO) mice. OT (1, 2, 2.5 U/day) or recombinant P-LAP (0.01 U/day) was continuously infused from gestation day 15.5 in WT and P-LAP KO mice. Duration until onset of labor was observed. Before and after administration of AVP (1 U/day) in WT and P-LAP KO mice, urine volume was measured. A significant shortening of pregnancy term was observed in P-LAP KO mice. Continuous infusion of OT (1 U/day) revealed that P-LAP KO mice resulted in premature delivery (OT hypersensitivity). We could observe a significant decrease of urine volume in P-LAP KO mice by administration of AVP. Administration of recombinant P-LAP in WT mice resulted in the delay of the onset of labor about 1.5 days compared with control mice. Our present study shows that the regulation of the onset of labor mainly depends on OT and its degradation by P-LAP and also the possible role of P-LAP in the regulation of urine output. P-LAP might be involved in the increased OT sensitivity just prior to onset of labor and also in the onset of labor by degradation of OT.

  9. Miks laps ei kuula sõna? / Tiia Kõnnussaar

    Index Scriptorium Estoniae

    Kõnnussaar, Tiia

    2004-01-01

    USA psühholoogid Francis X. Walton ja Robert L. Powers, kes on Alfred Adleri koolkonna esindajad, väidavad, et laps, kes käitub halvasti, on alati laps, kes tunneb end ebakindlalt. Artiklis on kasutatud raamatut: Francis X. Walton ja Robert L. Powers. Kuidas saavutada laste poolehoid. TÜ Kirjastus, 2001

  10. How dogs lap: open pumping driven by acceleration

    Science.gov (United States)

    Gart, Sean; Socha, John; Vlachos, Pavlos; Jung, Sunghwan

    2015-11-01

    Dogs drink by lapping because they have incomplete cheeks and cannot suck fluids into the mouth. When lapping, a dog's tongue pulls a liquid column from a bath, which is then swallowed, suggesting that the hydrodynamics of column formation are critical to understanding how dogs drink. We measured the kinematics of lapping from nineteen dogs and used the results to generate a physical model of the tongue's interaction with the air-fluid interface. These experiments with an accelerating rod help to explain how dogs exploit the fluid dynamics of the generated column. The results suggest that effects of acceleration govern lapping frequency, and that dogs curl the tongue ventrally (backwards) and time their bite on the column to increase fluid intake per lap. Comparing lapping in dogs and cats reveals that though they both lap with the same frequency scaling with respect to body mass and have similar morphology, these carnivores lap in different physical regimes: a high-acceleration regime for dogs and a low-acceleration regime for cats.

  11. Miks laps ei kuula sõna? / Tiia Kõnnussaar

    Index Scriptorium Estoniae

    Kõnnussaar, Tiia

    2004-01-01

    USA psühholoogid Francis X. Walton ja Robert L. Powers, kes on Alfred Adleri koolkonna esindajad, väidavad, et laps, kes käitub halvasti, on alati laps, kes tunneb end ebakindlalt. Artiklis on kasutatud raamatut: Francis X. Walton ja Robert L. Powers. Kuidas saavutada laste poolehoid. TÜ Kirjastus, 2001

  12. Dalle regole dell’argomentazione alla logica delle regole

    Directory of Open Access Journals (Sweden)

    Paolo Pistone

    2011-11-01

    Full Text Available Nell'antico dibattito tra logica e retorica la posizione classica era quellache attribuiva alla prima lo scettro della verit' ed alla seconda quello dell'opinione; lamoderna teoria dell'argomentazione ripropone questa contrapposizione distinguendoda una parte il regno delle verità atemporali ed acontestuali asserite dalle dimostrazionimatematiche e dall'altra quello delle credenze sempre rivedibili rivendicateattraverso argomentazioni che fanno uso dei più scaltri stratagemmi interpretativi.A questa contrapposizione si cerca di rispondere attraverso una analisi degli aspettiche legano la dimostrazione alle nozioni di verità e di interpretazione, rivendicandosoprattutto il ruolo di quest'ultima nella logica formale e provando a delineare,sulla base delle intuizioni fornite dalle recenti ricerche sulla ludica, un approcciogenerale all'argomentazione, formale ed informale, che si configuri come una verae propria logica delle regole di inferenza incentrata sulla rappresentazione esplicitadegli aspetti interpretativi che ne caratterizzano l'uso e la comprensione.

  13. Idraulica dei sistemi fognari dalla teoria alla pratica

    CERN Document Server

    Gisonni, Corrado

    2012-01-01

    La progettazione dei sistemi fognari e dei manufatti in essi presenti richiede un’attenta conoscenza delle leggi che regolano i fenomeni idraulici, con particolare riferimento alle correnti idriche a superficie libera. Partendo dalle nozioni fondamentali dell’Idraulica, il testo intende colmare alcune importanti lacune che ancora caratterizzano la letteratura italiana nel settore e che spesso sono alla base di errori progettuali, con ovvie conseguenze sulla sicurezza dei centri abitati (come testimoniato dai frequenti fenomeni di allagamento che sono stati registrati negli ultimi anni). Il libro è rivolto agli allievi dei corsi di studio nel settore dell’ingegneria Civile ed Ambientale. Particolare interesse è rivolto ai professionisti operanti nel settore della ingegneria idraulica e della pianificazione urbana, per i quali è forte l’esigenza di testi che contengano indicazioni di carattere sia teorico sia pratico, finalizzate alla progettazione di sistemi di drenaggio nei centri abitati.

  14. Una critica alla dottrina liberal-individualista dei diritti

    OpenAIRE

    Zamagni, S. (Stefano)

    1995-01-01

    Il saggio svolge un'analisi critica della versione individualista della dottrina liberale dei diritti, a partire dalla considerazione delle conseguenze che discendono dalla negazione del concetto di bene comune. Viene poi esaminata la debolezza della teoria neocontrattualista a fornire un soddisfacente fondamento per una teoria dei diritti. L'argomento giunge alla conclusione che la dottrina liberal-personalista rappresenta una valida alternativa a quella liberal-individualista, soprattutto i...

  15. Il museo partecipativo sul web: forme di partecipazione dell’utente alla produzione culturale e alla creazione di valore culturale

    Directory of Open Access Journals (Sweden)

    Elisa Bonacini

    2012-05-01

    Full Text Available Obiettivo di questo lavoro è un inquadramento sia del nuovo rapporto fra il museo partecipativo e l’utenza che delle forme di partecipazione dell’utenza alla produzione culturale e alla creazione di valore culturale, alla luce delle potenzialità offerte dalle ICT, soprattutto dal web e dai vari social media. Questo nuovo rapporto, che ha le sue radici più profonde proprio nell’ampia adozione di tutte le piattaforme tecnologiche oggi in uso, consente anche una reinterpretazione del significato stesso di cultural value. Il quadro, che viene qui delineato ed arricchito da numerosi esempi soprattutto stranieri, chiarisce anche quanto l’aspetto partecipativo e l’utilizzo di tags, folksonomie e user generated contents possano incidere sulla fidelizzazione dell’utenza. Infine, in una tabella presentata a fine del contributo, si evidenziano le maggiori componenti che caratterizzano il definitivo passaggio dalla fase Museo 1.0 alla fase Museo 2.0. The aim of this paper is a framework both of the new relationship between the participatory museum and the audience and a framework of multiple forms of audience participation in cultural production and in the creation of cultural value, given the potential offered by ICTs, especially the web and various social media. This new relationship, which has its deepest roots just in the adoption of all technology platforms in use today, also allows for a reinterpretation of the meaning of cultural value. The framework, outlined here and enriched by numerous examples especially foreigners, also makes clear that participation and use of tags, folksonomies and user-generated contents may have an impact on users loyalty. Finally, presented in a table at the end of the paper, we highlight the most important features characterizing the transition from the Museum 1.0 phase to the Museum 2.0 one.

  16. Camminabilità e capacità urbane: valutazione e supporto alla decisione e alla pianificazione urbanistica

    Directory of Open Access Journals (Sweden)

    Ivan Blečić

    2015-06-01

    Full Text Available L’articolo propone una metodologia di valutazione della camminabilità (walkability urbana ed il rispettivo strumento software di supporto alla decisione ed alla pianificazione urbanistica. Nella parte introduttiva discutiamo la rilevanza del concetto di camminabilità per la qualità urbana ed offriamo un suo inquadramento teorico all’interno dell’approccio alle capacità (capability approach. La parte centrale è dedicata alla presentazione del modello spaziale e multicriteriale di valutazione della camminabilità. La nostra costruzione della camminabilità nel modello propone un certo ribaltamento di prospettiva rispetto ai metodi sinora proposti: anziché valutare quanto un determinato luogo è in sé camminabile, il punteggio di camminabilità calcolato riflette come e verso dove una persona può intraprendere una camminata a partire da quel luogo; in altre parole, non quanto è camminabile, ma invece qual è la camminabilità di cui il luogo è dotato. Per questo, il punteggio di camminabilità combina tre componenti: (1 il numero di destinazioni di interesse/opportunità urbane raggiungibili a piedi; (2 le loro distanze; (3 la qualità dei percorsi pedonali verso queste destinazioni. La qualità dei percorsi pedonali è valutata in base a diversi attributi rilevanti per la camminabilità, che fanno riferimento a caratteristiche proprie della strada e dell’ambiente circostante in grado di contribuire a rendere il percorso piacevole, sicuro ed attrattivo. A titolo illustrativo viene nella terza parte dell’articolo presentato un esempio di applicazione del modello alla città di Alghero.

  17. RESEARCH ON A MAGNETIC FIELD IN ELECTROLYTIC LAPPING

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    Taking electrolytic lapping stainless steel for example, the principle of electrolytic lapping with a magnetic field is described, the movement of charged particles in the magnetic field is analyzed in tems of theory. Using a computer, the motion loci of the charged particles in the magnetic field are simulated. The theory and the experiment show that the magnetic field can accelerate the diffusion and mobility of the charged particles, accelerate the electrochemical reaction and reduce the surface roughness of the work more quickly, which improves the lapping efficiency.

  18. New mathematical model for error reduction of stressed lap

    Science.gov (United States)

    Zhao, Pu; Yang, Shuming; Sun, Lin; Shi, Xinyu; Liu, Tao; Jiang, Zhuangde

    2016-05-01

    Stressed lap, compared to traditional polishing methods, has high processing efficiency. However, this method has disadvantages in processing nonsymmetric surface errors. A basic-function method is proposed to calculate parameters for a stressed-lap polishing system. It aims to minimize residual errors and is based on a matrix and nonlinear optimization algorithm. The results show that residual root-mean-square could be >15% after one process for classical trefoil error. The surface period errors close to the lap diameter were removed efficiently, up to 50% material removal.

  19. FRICTION STIR LAP WELDING OF ALUMINUM - POLYMER USING SCRIBE TECHNOLOGY

    Energy Technology Data Exchange (ETDEWEB)

    Upadhyay, Piyush; Hovanski, Yuri; Fifield, Leonard S.; Simmons, Kevin L.

    2015-02-16

    Friction Stir Scribe (FSS) technology is a relatively new variant of Friction Stir Welding (FSW) which enables lap joining of dissimilar material with very different melting points and different high temperature flow behaviors. The cutter scribe attached at the tip of FSW tool pin effectively cuts the high melting point material such that a mechanically interlocking feature is created between the dissimilar materials. The geometric shape of this interlocking feature determines the shear strength attained by the lap joint. This work presents first use of scribe technology in joining polymers to aluminum alloy. Details of the several runs of scribe welding performed in lap joining of ~3.175mm thick polymers including HDPE, filled and unfilled Nylon 66 to 2mm thick AA5182 are presented. The effect of scribe geometry and length on weld interlocking features is presented along with lap shear strength evaluations.

  20. Ultrasonic Guided Wave Propagation through Welded Lap Joints

    Directory of Open Access Journals (Sweden)

    Audrius Jankauskas

    2016-12-01

    Full Text Available The objective of the research presented here is the investigation of ultrasonic guided wave (UGW propagation through the lap joint welded plates used in the construction of a storage tank floors. The investigations have been performed using numerical simulation by finite element method (FEM and tested by measurement of the transmission losses of the guided waves transmitted through the welded lap joints. Propagation of the symmetric S0 mode in the welded stainless steel plates in the cases of different lap joint overlap width, operation frequency, and additional plate bonding caused by corrosion were investigated. It was shown that the transmission losses of the S0 mode can vary in the range of 2 dB to 8 dB depending on the ratio between lap joint width and wavelength. It was also demonstrated that additional bonding in the overlap zone caused by corrosion can essentially reduce transmission losses.

  1. Riveted Lap Joints in Aircraft Fuselage Design, Analysis and Properties

    CERN Document Server

    Skorupa, Andrzej

    2012-01-01

    Fatigue of the pressurized fuselages of transport aircraft is a significant problem all builders and users of aircraft have to cope with for reasons associated with assuring a sufficient lifetime and safety, and formulating adequate inspection procedures. These aspects are all addressed in various formal protocols for creating and maintaining airworthiness, including damage tolerance considerations. In most transport aircraft, fatigue occurs in lap joints, sometimes leading to circumstances that threaten safety in critical ways. The problem of fatigue of lap joints has been considerably enlarged by the goal of extending aircraft lifetimes. Fatigue of riveted lap joints between aluminium alloy sheets, typical of the pressurized aircraft fuselage, is the major topic of the present book. The richly illustrated and well-structured chapters treat subjects such as: structural design solutions and loading conditions for fuselage skin joints; relevance of laboratory test results for simple lap joint specimens to rive...

  2. Davanti alla legge: Exorde di Drieu La Rochelle

    Directory of Open Access Journals (Sweden)

    Emanuele Canzaniello

    2012-04-01

    Full Text Available Questo lavoro tenta di porre in luce del breve testo di Pierre Drieu La Rochelle Exorde (1945, la sfuggente appartenenza a più generi, non solo letterari, dall’autobiografia al memoriale o testamento politico, alla memoria difensiva giudiziaria. Provando inoltre a dar conto dello sfondo storico della collaborazione francese con l’occupante nazista durante la seconda guerra mondiale. Viene quindi accennato il ritratto di un intellettuale di spicco della cultura de les années folles che consumò fino in fondo la compromissione con il nuovo culto totalitario. Attraverso le forme del testo, i nascondimenti dello stile, la singolare alterazione dei generi tra finzione giuridica e verità letteraria, si è potuto sciogliere e indicare aporie essenziali tra le diverse visioni del diritto, interne al dibattito giudiziario sull’epurazione. Lo scandalo del testo si è dunque rivelato nella sua messa alla sbarra, secondo il procedimento giuridico democratico, della democrazia stessa e più a fondo nella negazione dell’idea stessa di giustizia della storia.

  3. Review on failure prediction techniques of composite single lap joint

    Energy Technology Data Exchange (ETDEWEB)

    Ab Ghani, A.F., E-mail: ahmadfuad@utem.edu.my; Rivai, Ahmad, E-mail: ahmadrivai@utem.edu.my [Faculty of Mechanical Engineering, Locked Bag 1200, Hang Tuah Jaya, 75450 Ayer Keroh, Melaka (Malaysia)

    2016-03-29

    Adhesive bonding is the most appropriate joining method in construction of composite structures. The use of reliable design and prediction technique will produce better performance of bonded joints. Several papers from recent papers and journals have been reviewed and synthesized to understand the current state of the art in this area. It is done by studying the most relevant analytical solutions for composite adherends with start of reviewing the most fundamental ones involving beam/plate theory. It is then extended to review single lap joint non linearity and failure prediction and finally on the failure prediction on composite single lap joint. The review also encompasses the finite element modelling part as tool to predict the elastic response of composite single lap joint and failure prediction numerically.

  4. I capricci del caso Introduzione alla statistica, al calcolo delle probabilità e alla teoria degli errori

    CERN Document Server

    Piazza, Roberto

    2009-01-01

    I metodi probabilistici e statistici giocano un ruolo di primo piano sia nella scienza teorica e sperimentale che nelle applicazioni ingegneristiche, costituendo pertanto un elemento essenziale del bagaglio culturale che uno studente deve acquisire fin dai primi anni di apprendimento universitario. Questo libro, che nasce dall’esperienza didattica accumulata dall’autore nell’insegnamento dei metodi sperimentali, si propone di fornire un’introduzione al calcolo delle probabilità e alla teoria degli errori facendo uso di uno stile di presentazione volutamente informale e traendo spunto da concrete applicazioni sperimentali, spesso attraverso esempi di notevole importanza storica. Così, per esempio, argomenti quali il moto browniano, la diffusione di luce, il decadimento radioattivo, la fisiologia della visione, le statistiche quantistiche e di fotorivelazione, vengono utilizzati per delucidare concetti chiave dell’analisi statistica e probabilistica. Un'enfasi particolare è posta sull’origine e l...

  5. Loose abrasive lapping hardness of optical glasses and its interpretation.

    Science.gov (United States)

    Lambropoulos, J C; Xu, S; Fang, T

    1997-03-01

    We present an interpretation of the lapping hardness of commercially available optical glasses in terms of a micromechanics model of material removal by subsurface lateral cracking. We analyze data on loose abrasive microgrinding, or lapping at fixed nominal pressure, for many commercially available optical glasses in terms of this model. The Schott and Hoya data on lapping hardness are correlated with the results of such a model. Lapping hardness is a function of the mechanical properties of the glass: The volume removal rate increases approximately linearly with Young's modulus, and it decreases with fracture toughness and (approximately) the square of the Knoop hardness. The microroughness induced by lapping depends on the plastic and elastic properties of the glass, depending on abrasive shape. This is in contrast to deterministic microgrinding (fixed infeed rate), where it is determined from the plastic and fracture properties of the glass. We also show that Preston's coefficient has a similar dependence as lapping hardness on glass mechanical properties, as well as a linear dependence on abrasive size for the case of brittle material removal. These observations lead to the definition of an augmented Preston coefficient during brittle material removal. The augmented Preston coefficient does not depend on glass material properties or abrasive size and thus describes the interaction of the glass surface with the coolant-immersed abrasive grain and the backing plate. Numerical simulations of indentation are used to locate the origin of subsurface cracks and the distribution of residual surface and subsurface stresses, known to cause surface (radial) and subsurface (median, lateral) cracks.

  6. Characterization studies on the additives mixed L-arginine phosphate monohydrate (LAP) crystals

    Energy Technology Data Exchange (ETDEWEB)

    Haja Hameed, A.S., E-mail: hajahameed2001@gmail.co [PG and Research Department of Physics, Jamal Mohamed College, Tiruchirappalli 620 020, Tamil Nadu (India); Karthikeyan, C. [PG and Research Department of Physics, Jamal Mohamed College, Tiruchirappalli 620 020, Tamil Nadu (India); Ravi, G. [Department of Physics, Alagappa University, Karaikudi 630 003 (India); Rohani, S. [Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario, N6A 5B9 (Canada)

    2011-04-01

    L-arginine phosphate monohydrate (LAP), potassium thiocyanate (KSCN) mixed LAP (LAP:KSCN) and sodium sulfite (Na{sub 2}SO{sub 3}) mixed LAP (LAP:Na{sub 2}SO{sub 3}) single crystals were grown by slow cooling technique. The effect of microbial contamination and coloration on the growth solutions was studied. The crystalline powders of the grown crystals were examined by X-ray diffraction and the lattice parameters of the crystals were estimated. From the FTIR spectroscopic analysis, various functional group frequencies associated with the crystals were assigned. Vickers microhardness studies were done on {l_brace}1 0 0{r_brace} faces for pure and additives mixed LAP crystals. From the preliminary surface second harmonic generation (SHG) results, it was found that the SHG intensity at (1 0 0) face of LAP:KSCN crystal was much stronger than that of pure LAP.

  7. Auto Mechanics I. Learning Activity Packets (LAPs). Section D--Suspension.

    Science.gov (United States)

    Oklahoma State Board of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

    This document contains six learning activity packets (LAPs) that outline the study activities for the "suspension" instructional area for an Auto Mechanics I course. The six LAPs cover the following topics: wheel bearings, tires and wheels, wheel balancing, suspension system, steering system, and wheel alignment. Each LAP contains a…

  8. Viljandimaal läheb kaitse alla viis kanakulli pesa / Renno Nellis ; interv. Liisi Seil

    Index Scriptorium Estoniae

    Nellis, Renno, 1982-

    2005-01-01

    Vestlus Kotkaklubi eksperdi Renno Nellisega, kes aitab organiseerida kanakulli püsielupaikade kaitse alla võtmist. Vt. samas ka artiklit: Seil, Liisi "Metsaülemad suhtuvad pesade kaitsmisse mitut moodi"

  9. Viljandimaal läheb kaitse alla viis kanakulli pesa / Renno Nellis ; interv. Liisi Seil

    Index Scriptorium Estoniae

    Nellis, Renno, 1982-

    2005-01-01

    Vestlus Kotkaklubi eksperdi Renno Nellisega, kes aitab organiseerida kanakulli püsielupaikade kaitse alla võtmist. Vt. samas ka artiklit: Seil, Liisi "Metsaülemad suhtuvad pesade kaitsmisse mitut moodi"

  10. La questione dei divorziati e risposati civilmente alla luce della Relazione finale del Sinodo 2015

    Directory of Open Access Journals (Sweden)

    Pierluigi Ronzani

    2016-02-01

    SOMMARIO: 1. Introduzione al Sinodo dei Vescovi quale organo di più efficace collaborazione dell'Episcopato con il Supremo Pastore - 2. La Relazione Finale del Sinodo 2015 come risultato di un lungo percorso sinodale - 3. La struttura della Relazione Finale del Sinodo 2015 - 4. La prassi di non ammettere alla comunione eucaristica i divorziati risposati - 5. Le argomentazioni dei sostenitori della possibilità di modificare la prassi della non ammissione alla comunione eucaristica dei divorziati risposati - 6. La confutazione delle argomentazioni dei sostenitori della possibilità di modificare la prassi della non ammissione alla comunione eucaristica dei divorziati risposati - 7. Discernimento e integrazione dei divorziati risposati alla luce della Relazione Finale del Sinodo 2015 - 8. Conclusioni.

  11. Learning Activity Package, Algebra 124, LAPs 46-55.

    Science.gov (United States)

    Holland, Bill

    A series of 10 teacher-prepared Learning Activity Packages (LAPs) in advanced algebra and trigonometry, these units cover absolute value, inequalities, exponents, radicals, and complex numbers; functions; higher degree equations and the derivative; the trigonometric functions; graphs and applications of the trigonometric functions; sequences and…

  12. Insights: A LAP on Moles: Teaching an Important Concept.

    Science.gov (United States)

    Ihde, John

    1985-01-01

    Describes a learning activity packet (LAP) designed to help students understand the basic concept of the mole as a chemical unit; know relationships between the mole and atomic weights in the periodic table; and solve basic conversion problems involving moles, atoms, and molecules. (JN)

  13. Contributo alla didattica della lingua Italiana come lingua seconda

    Directory of Open Access Journals (Sweden)

    Lucija Pišot - Čok

    1990-12-01

    Full Text Available La tesi postlaurea "Contributo alia didattica della lingua italiana come lingua seconda" è frutto di esperienze raccolte dall'autrice nell'insegnamento della lingua italiana come L2, nonché sintesi riflessiva dellavoro empirico che l'educazione al bilinguismo le ispirava. L'insegnamento della lingua italiana nell'ambiente bilingue e biculturale dell'Istria deve differire dall'insegnamento dell'italiano come lingua straniera. Esso si pone finalità immediate (L'italiano è lingua veicolare e fmalità a lungo termine (L'italiano è una delle due lingue- culture del bilingue. Esso ha obiettivi cognitivi (L'italiano è scienza, sociali e etnolinguistici (L'educazione bilingue è fattore di transculturismo. L'autrice in prima persona ha avuto modo e opportunita di avvedersene, sia come collaboratrice nella stesura dei programmi per la lingua seconda, che come autrice di libri di testo per l'insegnamento di questa lingua, e relatrice in diversi tipi di aggiornamento professionale per insegnanti di lingua italiana elaborando, sperimentando e verificando le specificità dell'insegnamento della lingua italiana come L2 . II suo contributo alla teoria dell'educazione bilingue e le proposte per rendere l'insegnamento della lingua italiana come L2 efficace e valido, sono i1 nucleo della tesi.

  14. Osservazioni sul morbo di Steinert, con particolare riguardo alla cataratta

    Directory of Open Access Journals (Sweden)

    Enzo Azzi

    Full Text Available Nel morbo di Steinert, tra gli altri svariati sintomi di ordine desendo-crinonerovegetativi, un posto di primo piano spetta alla cataratta per la sua grandissima frequenza, per la sua precocità, per il carattere familiare e la sua presenza anche in membri immuni da altri segni della malattia, per i quesiti patogenetici che pone. Essa si presenta, generalmente, sotto forma di opacità puntiformi iridescenti, di vario colore (cristalli di colesterina. Si tratta sicuramente di una cataratta endocrina, ma è difficile assegnarne la genesi unicamente ad una ipofunzione paratiroidea ; per essa, come e sopratutto per la genesi della malattia in generale, l'autore invoca, come meccanismo primitivo, uma maiopragia diencefalo-ipofisaria. La presenza quasi costante della cataratta nello Steinert e la sua assenza nella miotonia congenita di Thomsen, non è motivo sufficiente, secondo l'autore, per separare nosologicamente le due sindromi le quali, invece, sareb-bero espressioni diverse di un identico processo: la miotonia congenita non è che uno stadio iniziale della distrofia miotonica.

  15. Failure analysis of dissimilar single-lap joints

    Directory of Open Access Journals (Sweden)

    F.A. Stuparu

    2016-03-01

    Full Text Available Single-lap joints made of aluminium and carbon fibre adherends of different thickness are tested to understand better the behaviour of such dissimilar joints. The overlap length and the thickness of the adhesive are kept constant. Local deformation fields are onitored by using the digital image correlation method. Peeling and shearing strains are investigated, emphasizing that peeling is important in the region where failure is initiated, towards an extremity of the overlap region. The use of only carbon fibre adherends is not recommended for a smaller thickness as an additional interface failure is produced and compromises the integrity of the lap joint. However, a dissimilar joint (aluminium-carbon with smaller thickness adherends succeeds to maintain the stiffness of the assembly, but its strength is diminished. The obtained results are suggesting that a complete monitoring of the failure processes in the overlap region can be fully understood only if local deformation measurements are possible.

  16. Combination of TB lymphadenitis and metastatic LAP in breast cancer

    Directory of Open Access Journals (Sweden)

    Abdolhassan Talaiezadeh

    2015-06-01

    Full Text Available Tuberculosis (TB may present as pulmonary and extra-pulmonary. TB lymphadenitis is the most common presentation of extra-pulmonary TB. TB lymphadenitis should be taken into account in the differential diagnosis of different disorders such as metastatic lymphadenopathy. The reported patient was a 65-year-old lady with breast cancer and conglomerated and matted axillary lymphadenopathy who received chemotherapy. She presented with more extensive axillary LAP contrary to our expectation. Modified radical mastectomy was done and pathology analysis reported TB lymphadenitis associated with metastatic LAP. Under cover of anti-TB therapy adjuvant chemoradiation therapy was started. Accordingly, we recommend TB be ruled out in every patient who needs chemotherapy in the endemic region because chemotherapy may cause the extension of TB in the body.

  17. Investigation into Interface Lifting Within FSW Lap Welds

    Energy Technology Data Exchange (ETDEWEB)

    K. S. Miller; C. R. Tolle; D. E. Clark; C. I. Nichol; T. R. McJunkin; H. B. Smartt

    2008-06-01

    Friction stir welding (FSW) is rapidly penetrating the welding market in many materials and applications, particularly in aluminum alloys for transportation applications. As this expansion outside the research laboratory continues, fitness for service issues will arise, and process control and NDE methods will become important determinants of continued growth. The present paper describes research into FSW weld nugget flaw detection within aluminum alloy lap welds. We present results for two types of FSW tool designs: a smooth pin tool and a threaded pin tool. We show that under certain process parameters (as monitored during welding with a rotating dynamometer that measures x, y, z, and torque forces) and tooling designs, FSW lap welds allow significant nonbonded interface lifting of the lap joint, while forming a metallurgical bond only within the pin region of the weld nugget. These lifted joints are often held very tightly together even though unbonded, and might be expected to pass cursory NDE while representing a substantial compromise in joint mechanical properties. The phenomenon is investigated here via radiographic and ultrasonic NDE techniques, with a copper foil marking insert (as described elsewhere) and by the tensile testing of joints. As one would expect, these results show that tool design and process parameters significantly affect plactic flow and this lifted interface. NDE and mechanical strength ramifications of this defect are discussed.

  18. Rosamaria Loretelli, L’invenzione del romanzo. Dall’oralità alla lettura silenziosa

    Directory of Open Access Journals (Sweden)

    Elena Porciani

    2012-04-01

    Full Text Available Forte delle sue competenze di anglista e studiosa del secolo XVIII, nonché del suo interesse pluridecennale per il rapporto tra oralità e scrittura (sua già l’introduzione alla versione italiana del celebre volume di Ong nel 1986, Rosamaria Loretelli mette in atto nell’Invenzione del romanzo. Dall’oralità alla lettura silenziosa un approccio alla questione dell’origine del romanzo senza dubbio innovativo nel panorama della critica italiana, legato com’è a una disciplina relativamente recente: la storia della lettura, nella quale convergono, in realtà, varie «altre storie: da quella dei lettori reali e della diffusione del libro, a quella della scrittura e delle forme materiali dei testi», così come «la storia dei corpi che leggono, dell’architettura e della mobilia adatte a quei corpi».

  19. How dogs lap: ingestion and intraoral transport in Canis familiaris

    OpenAIRE

    Crompton, A. W.; Musinsky, Catherine

    2011-01-01

    It has recently been suggested that the mechanism for lifting liquid from a bowl into the oral cavity during lapping is fundamentally different in cats and dogs: cats use adhesion of liquid to the tongue tip while dogs ‘scoop’ with their backwardly curled tongue. High-speed light videos and X-ray videos show that on the contrary, both cats and dogs use the mechanism of adhesion. Liquid is transported through the oral cavity to the oesophagus, against gravity, on the surface of the tongue as i...

  20. Lapimaal alla kukkunud kopterit juhtis Eesti piirivalve piloot / Küllike Rooväli

    Index Scriptorium Estoniae

    Rooväli, Küllike, 1969-

    2005-01-01

    21. septembril Soomes Lapimaal Vuotso küla lähedal alla kukkunud väikekopterit Schweizer 300C juhtis eestlane - piirivalve lennusalga päästekopteri teine piloot Rannel Vassiljev. Lisa, kaart: Kopteriõnnetus Lapimaal

  1. XX sajandi väärtarhitektuuri hakatakse kaitse alla võtma / Alo Lõhmus

    Index Scriptorium Estoniae

    Lõhmus, Alo

    2011-01-01

    Muinsuskaitseameti ja kultuuriministeeriumi käivitatud "Eesti XX sajandi arhitektuuri kaitsmise ja väärtustamise" projekti käigus valminud XX sajandi väärtarhitektuuri registrist, mis on eelduseks möödunud aastasaja huvitavamate ehitiste riikliku kaitse alla võtmisele

  2. Väärtuslikud setted jääksid kavandatava gaasitoru alla / Tanel Mazur

    Index Scriptorium Estoniae

    Mazur, Tanel, 1971-

    2007-01-01

    Ilmunud ka: Narva Postiljon 1. sept. lk. 2. Akadeemik Anto Raukase sõnul ladestuvad Soome lahte Eesti majandustsooni raua- ja mangaanivarud, mis jääksid Vene-Saksa gaasijuhtme alla. Lisa: Maavara. Vt. samas: Gaasijuhtme rajaja külastus lõppes tulemusteta

  3. Wal-Mart tõmbab USA elatustaset alla / Eva Rüütel

    Index Scriptorium Estoniae

    Rüütel, Eva

    2005-01-01

    USA majanduskriitikud väidavad, et riigi suurim tööandja jaekaubanduskett Wal-Mart kisub ameeriklaste elatustaset alla. Püüdes laialtlevinud arusaama kummutada, palkas ettevõte majanduskonsultatsioonifirma Global Insight'i, et uurida firma mõju ulatust Ameerika majandusele

  4. XX sajandi väärtarhitektuuri hakatakse kaitse alla võtma / Alo Lõhmus

    Index Scriptorium Estoniae

    Lõhmus, Alo

    2011-01-01

    Muinsuskaitseameti ja kultuuriministeeriumi käivitatud "Eesti XX sajandi arhitektuuri kaitsmise ja väärtustamise" projekti käigus valminud XX sajandi väärtarhitektuuri registrist, mis on eelduseks möödunud aastasaja huvitavamate ehitiste riikliku kaitse alla võtmisele

  5. Väärtuslikud setted jääksid kavandatava gaasitoru alla / Tanel Mazur

    Index Scriptorium Estoniae

    Mazur, Tanel, 1971-

    2007-01-01

    Ilmunud ka: Narva Postiljon 1. sept. lk. 2. Akadeemik Anto Raukase sõnul ladestuvad Soome lahte Eesti majandustsooni raua- ja mangaanivarud, mis jääksid Vene-Saksa gaasijuhtme alla. Lisa: Maavara. Vt. samas: Gaasijuhtme rajaja külastus lõppes tulemusteta

  6. Campania: territorio e città di fronte alla sfida della logistica

    Directory of Open Access Journals (Sweden)

    Giuseppe Mazzeo

    2010-07-01

    Full Text Available All’interno del sistema territoriale meridionale la Regione Campania si presenta come un polo importante nel settore del trasporto e dello smistamento delle merci. Questo ruolo si è venuto rinforzando in seguito alla realizzazione di infrastrutture dedicate alla logistica, connesse ad infrastrutture di supporto. Il sistema campano presenta punte di eccellenza di livello nazionale che possono incentivare il ruolo della Regione in questo settore, ma presenta anche fattori negativi che possono rallentare il decollo del settore. Si fa riferimento alle strozzature infrastrutturali e gestionali che ne inceppano l’efficienza, ma anche alla debolezza del sistema produttivo regionale che non garantisce una massa critica locale alla logistica campana. Un terzo aspetto è la mancanza di un chiaro disegno di programmazione degli investimenti e una maggiore chiarezza dei ruoli da assegnare alle diverse iniziative, nate soprattutto sulla base di spinte localistiche non coordinate. Il paper analizza la situazione della logistica territoriale in Campania e delle sue interrelazioni territoriali individuando punti di forza e di debolezza e potenziali fattori evolutivi. Gli aspetti della logistica che vengono affrontati sono di tipo territoriale e si differenziano da quelli della logistica urbana per la quantità di merci movimentate e per la concentrazione in pochi poli strategici, in quanto queste piattaforme logistiche richiedono attrezzature specializzate e ampi spazi per la movimentazione e il deposito. L’analisi del rapporto tra territorio e logistica individua quelli che sono i principali elementi di interconnessione e, spesso, di crisi, nell’uso dello spazio fisico, in ragione degli obiettivi a volte divergenti tra il governo del territorio ed i soggetti economici. Si passa successivamente ad analizzare lo stato del movimento merci in relazione alla portualità mediterranea e lo stato del sistema logistico campano (non ancora definito in tutte le

  7. Artificial Intelligence Mechanisms on Interactive Modified Simplex Method with Desirability Function for Optimising Surface Lapping Process

    Directory of Open Access Journals (Sweden)

    Pongchanun Luangpaiboon

    2014-01-01

    Full Text Available A study has been made to optimise the influential parameters of surface lapping process. Lapping time, lapping speed, downward pressure, and charging pressure were chosen from the preliminary studies as parameters to determine process performances in terms of material removal, lap width, and clamp force. The desirability functions of the-nominal-the-best were used to compromise multiple responses into the overall desirability function level or D response. The conventional modified simplex or Nelder-Mead simplex method and the interactive desirability function are performed to optimise online the parameter levels in order to maximise the D response. In order to determine the lapping process parameters effectively, this research then applies two powerful artificial intelligence optimisation mechanisms from harmony search and firefly algorithms. The recommended condition of (lapping time, lapping speed, downward pressure, and charging pressure at (33, 35, 6.0, and 5.0 has been verified by performing confirmation experiments. It showed that the D response level increased to 0.96. When compared with the current operating condition, there is a decrease of the material removal and lap width with the improved process performance indices of 2.01 and 1.14, respectively. Similarly, there is an increase of the clamp force with the improved process performance index of 1.58.

  8. Edge effect modeling and experiments on active lap processing.

    Science.gov (United States)

    Liu, Haitao; Wu, Fan; Zeng, Zhige; Fan, Bin; Wan, Yongjian

    2014-05-05

    Edge effect is regarded as one of the most difficult technical issues for fabricating large primary mirrors, especially for large polishing tools. Computer controlled active lap (CCAL) uses a large size pad (e.g., 1/3 to 1/5 workpiece diameters) to grind and polish the primary mirror. Edge effect also exists in the CCAL process in our previous fabrication. In this paper the material removal rules when edge effects happen (i.e. edge tool influence functions (TIFs)) are obtained through experiments, which are carried out on a Φ1090-mm circular flat mirror with a 375-mm-diameter lap. Two methods are proposed to model the edge TIFs for CCAL. One is adopting the pressure distribution which is calculated based on the finite element analysis method. The other is building up a parametric equivalent pressure model to fit the removed material curve directly. Experimental results show that these two methods both effectively model the edge TIF of CCAL.

  9. Mechanistic Features of Nanodiamonds in the Lapping of Magnetic Heads

    Directory of Open Access Journals (Sweden)

    Xionghua Jiang

    2014-01-01

    Full Text Available Nanodiamonds, which are the main components of slurry in the precision lapping process of magnetic heads, play an important role in surface quality. This paper studies the mechanistic features of nanodiamond embedment into a Sn plate in the lapping process. This is the first study to develop mathematical models for nanodiamond embedment. Such models can predict the optimum parameters for particle embedment. From the modeling calculations, the embedded pressure satisfies p0=3/2·W/πa2 and the indentation depth satisfies δ=k1P/HV. Calculation results reveal that the largest embedded pressure is 731.48 GPa and the critical indentation depth δ is 7 nm. Atomic force microscopy (AFM, scanning electron microscopy (SEM, and Auger electron spectroscopy (AES were used to carry out surface quality detection and analysis of the disk head. Both the formation of black spots on the surface and the removal rate have an important correlation with the size of nanodiamonds. The results demonstrate that an improved removal rate (21 nm·min−1 can be obtained with 100 nm diamonds embedded in the plate.

  10. Lap Shear Testing of Candidate Radiator Panel Adhesives

    Science.gov (United States)

    Ellis, David; Briggs, Maxwell; McGowan, Randy

    2013-01-01

    During testing of a subscale radiator section used to develop manufacturing techniques for a full-scale radiator panel, the adhesive bonds between the titanium heat pipes and the aluminum face sheets failed during installation and operation. Analysis revealed that the thermal expansion mismatch between the two metals resulted in relatively large shear stresses being developed even when operating the radiator at moderate temperatures. Lap shear testing of the adhesive used in the original joints demonstrated that the two-part epoxy adhesive fell far short of the strength required. A literature review resulted in several candidate adhesives being selected for lap shear joint testing at room temperature and 398 K, the nominal radiator operating temperature. The results showed that two-part epoxies cured at room and elevated temperatures generally did not perform well. Epoxy film adhesives cured at elevated temperatures, on the other hand, did very well with most being sufficiently strong to cause yielding in the titanium sheet used for the joints. The use of an epoxy primer generally improved the strength of the joint. Based upon these results, a new adhesive was selected for the second subscale radiator section.

  11. Control Strategy of a Two-Lap Connection Converter

    Institute of Scientific and Technical Information of China (English)

    QUAN Ji-nan; WANG Cong

    2007-01-01

    Two-lap sequential control converters are usually adopted to supply and improve the power factor of input side. The line harmonic damage generated by a sequential control thyristor converter can be serious. To solve this problem and seek an optimum control strategy, we derived the changeable regular of the line-input-current, the fundamental-frequency-current, the harmonic-current-content and the harmonic total distortion ratio of the converter at different firing angles. We obtained relevant data from experiments with a sequential control system of a DC 2.2kW/220V motor. With the example of the operating condition of a DC mine elevator, the harmonic current is two times approximately in sequential control compared to synchronous control when the firing angle of the two converters differs in 30°. At different operating states of a two-lap connection converter, the ideal strategy is an exchange between sequential control and synchronous control, by which we can achieve the complementary goal of improving the power factor and harmonic effect. All analytical conclusions are supported by simulation and experimental results.

  12. Friction Stir Lap Welding: material flow, joint structure and strength

    Directory of Open Access Journals (Sweden)

    Z.W. Chen

    2012-12-01

    Full Text Available Friction stir welding has been studied intensively in recent years due to its importance in industrial applications. The majority of these studies have been based on butt joint configuration and friction stir lap welding (FSLW has received considerably less attention. Joining with lap joint configuration is also widely used in automotive and aerospace industries and thus FSLW has increasingly been the focus of FS research effort recently. number of thermomechancal and metallurgical aspects of FSLW have been studied in our laboratory. In this paper, features of hooking formed during FSLW of Al-to-Al and Mg-to-Mg will first be quantified. Not only the size measured in the vertical direction but hook continuity and hooking direction have been found highly FS condition dependent. These features will be explained taking into account the effects of the two material flows which are speed dependent and alloy deformation behaviour dependent. Strength values of the welds will be presented and how strength is affected by hook features and by alloy dependent local deformation behaviours will be explained. In the last part of the paper, experimental results of FSLW of Al-to-steel will be presented to briefly explain how joint interface microstructures affect the fracturing process during mechanical testing and thus the strength. From the results, tool positioning as a mean for achieving maximum weld strength can be suggested.

  13. Modulated Lapped Biorthogonal Transform for Non-orthogonal Narrowband Interference Excision in Spread Spectrum Communications

    Institute of Scientific and Technical Information of China (English)

    朱丽平; 胡光锐; 赵海波; 朱义胜

    2005-01-01

    Traditional lapped transform domain excision techniques obtain good performance at the expense of increased processing delay. Extension of transform domain filtering techniques to the lapped biorthogonal transform domain can help solve the problem. By incorporating biorthogonality into the lapped transforms, more flexibility is obtained in the design of windows. Thus transform bases with better stopband attenuation can be generated by designing windows, but not by increasing the overlapping factor. In this paper, a new modulated lapped biorthogonal transform (MLBT) with optimized windows is introduced for efficient compression of multi-tone interfering signal energy. The bit error rate (BER) performance of the receiver employing the proposed MLBT excision technique is analyzed and compared with that of the lapped transform domain excision-based receivers. Simulation results demonstrate the improved performance and increased robustness of the proposed technique.

  14. Lapped Block Image Analysis via the Method of Legendre Moments

    Directory of Open Access Journals (Sweden)

    El Fadili Hakim

    2003-01-01

    Full Text Available Research investigating the use of Legendre moments for pattern recognition has been performed in recent years. This field of research remains quite open. This paper proposes a new technique based on block-based reconstruction method (BBRM using Legendre moments compared with the global reconstruction method (GRM. For alleviating the blocking artifact involved in the processing, we propose a new approach using lapped block-based reconstruction method (LBBRM. For the problem of selecting the optimal number of moment used to represent a given image, we propose the maximum entropy principle (MEP method. The main motivation of the proposed approaches is to allow fast and efficient reconstruction algorithm, with improvement of the reconstructed images quality. A binary handwritten musical character and multi-gray-level Lena image are used to demonstrate the performance of our algorithm.

  15. Laps olla muretuna veel / George Gordon Byron ; tlk. Minni Nurme

    Index Scriptorium Estoniae

    Byron, George Gordon

    2006-01-01

    Sisu: Laps olla muretuna veel ; Lachin y Gair ; Romantikale ; Värsid, kirjutatud pärnapuule Harrowþ kalmistu mäel ; Augustale : "Kui süngeks läks mu silmapiir..." ; Augustale : "Kuigi öö ju on varjand mu päeva..." ; Maryle ; Ela hästi! ; Nutvale neitsile ; Kirjutus albumisse ; Hüvastijätt ; Stantsid muusikast ; Muusikale ; Ta oma kauniduses käib ; Mu hing on morn ; Su elu lõppes ; Sa nutsid - pisarpärle täis... ; Unetuma päike ; Kuulsa Kreeka sõjalaulu järele ; Värsid ; Ludiidide laul ; Epigramme ; Pimedus ; Chilloni vang ; Prometheus ; Childe Haroldi palveränd ; Parisina ; Korsaar ; Byroni viimased read. Eluloolisi andmeid autori kohta lk. 327

  16. How dogs lap: ingestion and intraoral transport in Canis familiaris.

    Science.gov (United States)

    Crompton, A W; Musinsky, Catherine

    2011-12-23

    It has recently been suggested that the mechanism for lifting liquid from a bowl into the oral cavity during lapping is fundamentally different in cats and dogs: cats use adhesion of liquid to the tongue tip while dogs 'scoop' with their backwardly curled tongue. High-speed light videos and X-ray videos show that on the contrary, both cats and dogs use the mechanism of adhesion. Liquid is transported through the oral cavity to the oesophagus, against gravity, on the surface of the tongue as it is drawn upwards, then a tight contact between the tongue surface and palatal rugae traps liquid and prevents its falling out as the tongue is protruded. At least three cycles are needed for intraoral transport of liquid in the dog.

  17. Laps olla muretuna veel / George Gordon Byron ; tlk. Minni Nurme

    Index Scriptorium Estoniae

    Byron, George Gordon

    2006-01-01

    Sisu: Laps olla muretuna veel ; Lachin y Gair ; Romantikale ; Värsid, kirjutatud pärnapuule Harrowþ kalmistu mäel ; Augustale : "Kui süngeks läks mu silmapiir..." ; Augustale : "Kuigi öö ju on varjand mu päeva..." ; Maryle ; Ela hästi! ; Nutvale neitsile ; Kirjutus albumisse ; Hüvastijätt ; Stantsid muusikast ; Muusikale ; Ta oma kauniduses käib ; Mu hing on morn ; Su elu lõppes ; Sa nutsid - pisarpärle täis... ; Unetuma päike ; Kuulsa Kreeka sõjalaulu järele ; Värsid ; Ludiidide laul ; Epigramme ; Pimedus ; Chilloni vang ; Prometheus ; Childe Haroldi palveränd ; Parisina ; Korsaar ; Byroni viimased read. Eluloolisi andmeid autori kohta lk. 327

  18. Creep Stress Redistribution of Single-Lap Weldbonded Joint

    Science.gov (United States)

    Yin, Yong; Chen, Jian-Jun; Tu, Shan-Tung

    2005-01-01

    Weldbonding is a new joining technique that combines the spot welding with the adhesive bonding. It has found more and more applications in recent years because of its unique advantages. However, researches on the new technique are few especially on the long-term stress and strength of weldbonded structures. In the present paper, three-dimensional viscoplastic finite element analyses (FEA) of a single-lap weldbonded joint are conducted to investigate the stress redistribution. The results show that stresses increase obviously near the interface between the adhesive and the weld spot with the creep of adhesive. The adhesive tends to distribute its stresses more uniformly and transfer some loads to the weld spot. The stress concentration factor of weldbonded joint is significantly lower than that of the direct spot-weld in connection. The simulations illustrate that increasing of creep parameter will enhance the maximum stress level in the weld spot.

  19. Menetlejate küsitlemistehnikad : alla 14-aastaste laste ülekuulamisprotokollide analüüs / Kristjan Kask

    Index Scriptorium Estoniae

    Kask, Kristjan, 1980-

    2010-01-01

    Alla 14-aastaste laste kohtueelse ülekuulamise videosalvestiste analüüsist. Ülevaade põhineb Justiitsministeeriumi poolt 2009. aastal läbi viidud uurimisprojektil "Alaealiste ülekuulamine kriminaalmenetluses". Tabelid

  20. Kas Sinu ülikoolis on kõik korras? / Toomas Välja, Ander Allas ; intervjueerinud Barbara Lehtna

    Index Scriptorium Estoniae

    Välja, Toomas

    2010-01-01

    MTÜ Eesti Üliõpilaskondade Liit korraldab 9. oktoobril 2010 tudengite mõttetalgud "Minu otsus". Küsimustele vastavad talgujuhid Toomas Välja Eesti Lennuakadeemiast ja Ander Allas Tallinna Ülikoolist

  1. CONOSCENZA ED ESPERIENZA. PER UNA LETTURA “RELAZIONALISTA” DELLO SPIRITO DELLA FILOSOFIA KANTIANA ALLA LUCE DELLO SCHEMATISMO TRASCENDENTALE

    Directory of Open Access Journals (Sweden)

    Lara Scaglia

    2014-03-01

    Full Text Available L’articolo intende valutare in che misura la dottrina kantiana dello schematismo possa contribuire a chiarire gli intenti del Criticismo, con particolare attenzione alla relazione tra conoscenza ed esperienza.

  2. Sicurezza nazionale e diritto di libertà religiosa. Alcune considerazioni alla luce della recente esperienza statunitense

    Directory of Open Access Journals (Sweden)

    Pasquale Annicchino

    2017-02-01

    SOMMARIO: 1. Introduzione – 2. La sorveglianza di massa alla luce del caso “Snowden” – 3. Il caso del New York Police Department – 4. Primo emendamento costituzionale e nuove tecnologie – 5. Conclusioni.

  3. Raggi di luce di un’alba nuova. La formazione alla democrazia sui giornali fiorentini del biennio 1944-1946

    Directory of Open Access Journals (Sweden)

    Matteo Mazzoni

    2011-10-01

    Full Text Available All’uscita della guerra, a Firenze così come in tutto il paese, partiti politici e istituzioni si trovano di fronte ai problemi della ricostruzione, non solo materiale, dell’Italia. Dopo il regime fascista è necessario rieducare gli italiani alla libertà. Il saggio mostra il ruolo della stampa fiorentina, espressione delle forze antifasciste, in questo processo di formazione. Nel 1944-1946, nonostante le divisioni ideologiche e le contrapposizioni fra i partiti, attraverso i giornali sono promossi una nuova identità per la città, centrata sulla memoria della Resistenza, l’invito alla partecipazione alla vita pubblica e alla politica, il rispetto del voto e delle leggi, la condanna della violenza, per diffondere e consolidare i principi della democrazia.

  4. Lap-joint testing of precoated steel materials

    Directory of Open Access Journals (Sweden)

    Chico, B.

    2003-12-01

    Full Text Available In industry, particularly in the building construction, lap-joint technology for precoated steel sheet materials has undergone rapid development. However, standars for lap-joint testing are lacking. This work analyses the behaviour of four precoated steel materials commonly used in the building industry: 55 % Al-Zn and hot dip galvanized, painted and unpainted. Two-year atmospheric exposure tests have been carried out in Madrid and Avilés (Spain, complemented by accelerated weathering tests in climatic cabinets. The latter have consisted of two salt fog/humidity/drying cycles: VDA cycle 621-415 and the "CENIM cycle", which has been designed to adequately simulate the behaviour of materials in this type of joints.

    En la industria en general y, particularmente, en la industria de la construcción, las tecnologías sobre uniones solapadas han experimentado un rápido desarrollo. Sin embargo, no son abundantes los ensayos para este tipo de uniones. Este trabajo analiza el comportamiento de cuatro materiales de acero pre-recubierto comúnmente usados en la industria de la construcción: 55 % Al-Zn y galvanizado por inmersión en caliente, con recubrimiento orgánico y sin él. Se han realizado ensayos de exposición natural durante dos años en las atmósferas de Madrid y Avilés (España, complementados con ensayos de envejecimiento acelerado en cámaras climáticas. En estos últimos se han ensayado dos ciclos de proyección niebla salina/humedad/secado: ciclo VDA 621-415 y un ciclo desarrollado en el CENIM diseñado.

  5. APPLICATION OF TAGUCHI AND ANOVA IN OPTIMIZATION OF PROCESS PARAMETERS OF LAPPING OPERATION FOR CAST IRON

    Directory of Open Access Journals (Sweden)

    P.R. Parate

    2013-06-01

    Full Text Available Lapping appears like a miraculous process, because it can produce surfaces that are perfectly flat, perfectly round, perfectly smooth, perfectly sharp, or perfectly accurate. Under the correct circumstances, it can impart or improve precise geometry (flatness, roundness, etc., improve surface finish, improve surface quality, achieve high dimensional accuracy (length, diameter, etc., improve angular accuracy (worm gears, couplings, etc., improve fit, and above all, sharpen the tools. This paper presents research on calculating the material removal rate for a machining component by the lapping process. The cast iron sample with an outer diameter of 50 mm and an inner diameter of 45 mm was tested on a single plate tabletop lapping machine. Experiments based on design of experiments were conducted by varying lapping load, lapping time, paste concentration, lapping fluid, and by using different types of abrasives. The Taguchi statistical method has been used in this work. Optimum machining parameters for material removal rate are estimated and verified with experimental results and are found to be in good agreement. The confirmation test exhibits high material removal rate by using Al2O3 abrasive particles together with oil as a carrier fluid under the impression of high load. Further material removal rate increases with an increase in lapping load and time.

  6. «... Cercare l'esperienza alla sua fonte». Il dono della verità

    Directory of Open Access Journals (Sweden)

    Vincenzo Vitiello

    2011-11-01

    Full Text Available Un cammino nel territorio della conoscenza, da Wittgenstein a Kant, da Aristotele a Platone, con finale apertura all’etica dell’«accanto», dell’io tu a se medesimo e di se medesimo, ovvero: alla filosofia come testimonianza, alla verità come dono d’altri. «...Look for the experience at its source». The gift of truth A path into the territory of knowledge, from Wittgenstein to Kant, from Aristotle to Plato, with a final opening to the ethics of 'beside', of the I (that is «You» towards Himself and of Himself; that is, to philosophy as witness, to truth as others' gift.

  7. Introduzione alla Teoria della elasticità Meccanica dei solidi continui in regime lineare elastico

    CERN Document Server

    Colombo, Luciano

    2007-01-01

    La meccanica dei solidi rappresenta un corpus di conoscenze di formidabile robustezza concettuale, di raffinata eleganza matematico-formale e di grandissima utilita’ applicativa. Come tale ha una valenza formativa molto forte in diversi campi delle scienze naturali (fisica della materia, scienza dei materiali), ingegneristiche (scienza delle costruzioni, ingegneria strutturale e meccanica) e matematiche (matematica applicata). La teoria della elasticita’costituisce inoltre uno dei punti-cardine su cui si articola il moderno paradigma di ricerca detto "modellazione multi-scala dei materiali", secondo il quale le proprieta’ di un materiale sono descritte tramite la concorrenza di metodi teorici affatto diversi: mentre alla nanoscala opera la meccanica quantistica, alla micro- e meso-scala opera il continuo. La conoscenza del continuo elastico abilita lo Studente di Fisica, di Scienza dei Materiali, di Matematica o l’Allievo Ingegnere a confrontarsi con questo moderno e affascinate strumento di ricerca s...

  8. Il Centro Nascita Montessori. Dal neonato in famiglia al bambino e alla famiglia nel servizio educativo

    Directory of Open Access Journals (Sweden)

    Laura Franceschini

    2010-02-01

    Full Text Available Intervento al Workshop Internazionale “Infanzie e Famiglie in Europa”, del 16 ottobre 2009, presso la Facoltà di Scienze della Formazione, Via Filippo Re, 6 Bologna (Aula Magna. L’intervento illustra i valori fondativi del Centro Nascita Montessori dalle sue origini ai giorni nostri attraverso un percorso che si è allargato nel tempo: dalla focalizzata attenzione e cura al neonato in famiglia o nel brefotrofio fino agli anni ’60 alla cura della crescita del bambino nei servizi educativi e alla cura della relazione con le famiglie dagli anni ‘70 in poi. Tale espansione del campo di interesse e d’indagine operativa ha arricchito il patrimonio di competenze e di conoscenze del C.N.M..

  9. Dalla teoria alla pratica nei modelli macroeconomici: l’eclettismo post-keynesiano

    Directory of Open Access Journals (Sweden)

    Ignazio Visco

    2005-06-01

    Full Text Available Questo saggio riesamina e discute il contributo di Franco Modigliani alla costruzione di modelli macroeconomici utilizzati per la previsione e per l’elaborazione delle politiche economiche. Come ha osservato Paul Samuelson, il lavoro teorico svolto da Modigliani è stato fondamentale per lo sviluppo del quadro d’insieme entro ilquale è maturato l’“eclettismo post-keynesiano” della seconda metà del ventesimo secolo. Nel passaggio dalla teoria alla pratica vengono considerati due aspetti del lavoro di Modigliani: 1 l’impostazione sistemica che si incentra sulla relazione tra ilbreve e il lungo periodo; 2 il particolare riferimento al meccanismo di trasmissione della politica monetaria nell’utilizzo del modello macroeconomico per le politiche di stabilizzazione economica. Si discute, infine, brevemente ciò che oggi resta di questo contributo, anche in relazione ad alcune recenti proposte sulla costruzione di modelli macroeconomici.

  10. Fattori genetici nella scelta di nuovi parametri qualitativi del latte con particolare riguardo alla sua attitudine tecnologico-casearia

    OpenAIRE

    NICOLETTI, CHIARA

    2011-01-01

    Migliorare la qualità del latte è una sfida che le Associazioni Nazionali Allevatori Italiane hanno intrapreso con vigore negli ultimi anni: solo stimolando gli allevatori a produrre un latte idoneo alla caseificazione e, quindi, particolarmente adatto alla produzione di prodotti lattiero caseari di esclusivo valore sarà possibile diversificare le produzioni e contrastare quindi il fenomeno dell’omologazione di tutti i prodotti caseari. E’ risaputo come la produzione di latte sia diversa a...

  11. Giada Tognazzi, La concezione biologica della donna nel Corpus Hippocraticum: dalla teoria alla terapia

    OpenAIRE

    Giada Tognazzi

    2008-01-01

    I. Fisiologia e anatomia femminile I medici ippocratici hanno dedicato un’importante parte dei loro studi alla ginecologia. Con queste opere si ha la prima formulazione scientifica di un sapere sul corpo femminile e al contempo la prima classificazione delle caratteristiche e delle funzioni biologiche della donna. I trattati prettamente ginecologici compresi nel Corpus sono: De natura muliebri, De mulierum affectibus I-III e De virginum morbis. Essi costituiscono una vera e propria “scienza d...

  12. Ludoteca .it: dalla fase 1.0 alla fase 2.0. - Metodi e strumenti

    OpenAIRE

    Bassi, Giorgia; Lami, Beatrice; Scanu, Gian Mario

    2014-01-01

    Questa pubblicazione descrive le basi teoriche e metodologiche del progetto Ludoteca .it. Nella prima parte sono riportati dati recenti sul rapporto tra media digitali e minori, con particolare attenzione alle abitudini e modalit? di fruizione. Si approfondisce in seguito il concetto di "nativo digitale", soprattutto dal punto di vista degli stili di apprendimento. La pubblicazione affronta quindi il difficile tema del rapporto tra scuola e media digitali, con riferimento alla situazione attu...

  13. Giada Tognazzi, La concezione biologica della donna nel Corpus Hippocraticum: dalla teoria alla terapia

    Directory of Open Access Journals (Sweden)

    Giada Tognazzi

    2008-07-01

    Full Text Available I. Fisiologia e anatomia femminileI medici ippocratici hanno dedicato un’importante parte dei loro studi alla ginecologia. Con queste opere si ha la prima formulazione scientifica di un sapere sul corpo femminile e al contempo la prima classificazione delle caratteristiche e delle funzioni biologiche della donna. I trattati prettamente ginecologici compresi nel Corpus sono: De natura muliebri, De mulierum affectibus I-III e De virginum morbis. Essi costituiscono una vera e propria “scienza de...

  14. Dentro la Betlemme nera. A Predappio una mostra dedicata alla marcia su Roma

    Directory of Open Access Journals (Sweden)

    Lorena Mussini

    2013-05-01

    Full Text Available A Predappio, città natale di Mussolini, nel 90º anniversario della marcia su Roma è inaugurata una mostra che ricostruisce il colpo di stato fascista contrapposto alla sua trasfigurazione propagandistica nel mondo scolastico. La mostra si sviluppa su due percorsi paralleli: quello storico fattuale della violenta conquista del potere e quello didattico della trasmissione del mito a scuola, snodo fondamentale per il controllo sociale e luogo prioritario di produzione di consenso verso il regime.

  15. P-LAP/IRAP-induced cell proliferation and glucose uptake in endometrial carcinoma cells via insulin receptor signaling

    Directory of Open Access Journals (Sweden)

    Nomura Seiji

    2007-01-01

    Full Text Available Abstract Background Hyperglycemia or hyperinsulinemia contributes to poorer endometrial cancer survival. It was shown that P-LAP/IRAP translocates to the plasma membrane in response to insulin stimulation. Recently, we demonstrated that P-LAP/IRAP is associated with a poor prognosis in endometrial adenocarcinoma patients. The aim of this study was to examine whether the malignant potential of endometrial cancer enhanced by P-LAP/IRAP is due to increased glucose uptake via the P-LAP/IRAP-mediated activation of insulin signaling. Methods We transfected P-LAP/IRAP cDNA into A-MEC cells (endometrial adenocarcinoma cell line, and A-MEC-LAP cells expressed a remarkably high level of GLUT4 proteins. Results 3H-2-deoxyglucose uptake which responds to insulin in A-MEC-LAP cells was significantly higher than that of A-MEC-pc cells. A-MEC-LAP cells exhibited a significant growth-stimulatory effect compared to A-MEC-pc cells. A-MEC-LAP cells expressed a remarkably high level of p85PI3K protein compared to A-MEC-pc cells, and showed a higher degree of AKT phosphorylation by insulin stimulation. Conclusion In summary, P-LAP/IRAP was involved in the increasing malignant potential of endometrial cancer mediated by insulin. P-LAP/IRAP was suggested to be a potential new target of molecular-targeted therapy for endometrial cancer.

  16. Electromechanical behaviour of REBCO tape lap splices under transverse compressive loading

    CERN Document Server

    Grether, A; Ballarino, A.; Bottura, L.

    2016-01-01

    We have studied the influence of transverse compressive stress on the resistance and critical current (Ic) of soldered REBCO tape lap splices. Internal contact resistances dominate the overall REBCO lap splice resistances. Application of transverse compressive stress up to 250 MPa during the resistance measurements does not alter the resistance and Ic of the soldered REBCO splices that were studied. The resistance of unsoldered REBCO tape lap splices depends strongly on the contact pressure. At a transverse compressive stress of 100 MPa to which Roebel cables are typically exposed in high field magnets, the crossover splice contact resistance is comparable to the internal tape resistances.

  17. Global-Local Finite Element Analysis of Bonded Single-Lap Joints

    Science.gov (United States)

    Kilic, Bahattin; Madenci, Erdogan; Ambur, Damodar R.

    2004-01-01

    Adhesively bonded lap joints involve dissimilar material junctions and sharp changes in geometry, possibly leading to premature failure. Although the finite element method is well suited to model the bonded lap joints, traditional finite elements are incapable of correctly resolving the stress state at junctions of dissimilar materials because of the unbounded nature of the stresses. In order to facilitate the use of bonded lap joints in future structures, this study presents a finite element technique utilizing a global (special) element coupled with traditional elements. The global element includes the singular behavior at the junction of dissimilar materials with or without traction-free surfaces.

  18. Laps ja pere vajavad enam tähelepanu / Anne Tiko

    Index Scriptorium Estoniae

    Tiko, Anne, 1949-

    2001-01-01

    Lääne-Viru Maavalitsuse, Lastekaitse Liidu ja TPÜ sotsiaaltöö osakonna korraldatud kuuenda vabariikliku lastekaitsekonverentsi "Laps ja pere tänases Eestis" pöördumine haridus- ja sotsiaalministeeriumi poole

  19. Laps ja pere vajavad enam tähelepanu / Anne Tiko

    Index Scriptorium Estoniae

    Tiko, Anne, 1949-

    2001-01-01

    Lääne-Viru Maavalitsuse, Lastekaitse Liidu ja TPÜ sotsiaaltöö osakonna korraldatud kuuenda vabariikliku lastekaitsekonverentsi "Laps ja pere tänases Eestis" pöördumine haridus- ja sotsiaalministeeriumi poole

  20. Alteration of Sulphides in the Rumuruti Chondrite La Paz Icefield (LAP) 031275

    Science.gov (United States)

    Steer, E. D.; Treiman, A. H.

    2014-09-01

    Pyrrhotite in LAP 03175 (R5) has altered to a fine-grained mineral mixture. New data (optical, chemical, and Raman) suggest the mixture includes violarite and tochilinite, but not (as suggested earlier) graphite, hematite, and/or jarosite.

  1. Evaluation of Pediatric Use Patterns and Performance of Lap Shoulder Belt Systems in the Center Rear

    OpenAIRE

    2004-01-01

    Lap and shoulder belts have been required in rear outboard positions since 1989. A recent congressional mandate encouraged the requirement of a lap and shoulder belt in the center rear seat position. This study utilized Data from the Partners for Child Passenger Safety study, a large-scale child-focused crash surveillance system, to quantify changes in seating patterns for children in vehicles that already have this feature compared to those which do not and measured the safety benefit associ...

  2. On the water lapping of felines and the water running of lizards: A unifying physical perspective

    OpenAIRE

    Aristoff, Jeffrey M.; Stocker, Roman; Reis, Pedro M.; Jung, Sunghwan

    2011-01-01

    We consider two biological phenomena taking place at the air-water interface: the water lapping of felines and the water running of lizards. Although seemingly disparate motions, we show that they are intimately linked by their underlying hydrodynamics and belong to a broader class of processes called Froude mechanisms. We describe how both felines and lizards exploit inertia to defeat gravity, and discuss water lapping and water running in the broader context of water exit and water entry, r...

  3. Testing the stochastic LapH method in the twisted mass formulation

    CERN Document Server

    Jost, Christian; Urbach, Carsten; Zimmermann, Falk

    2013-01-01

    We present first results using the stochastic Laplace-Heaviside (sLapH) method in the twisted mass formulation. The calculations are performed on gauge configurations provided by the European Twisted Mass (ETM) collaboration with 2+1+1 dynamical quark flavours at a single value of the lattice spacing. In particular, we compute disconnected contributions to flavour singlet pseudo-scalar mesons and compare sLapH to standard volume noise methods.

  4. On the water lapping of felines and the water running of lizards: A unifying physical perspective

    OpenAIRE

    Aristoff, Jeffrey M.; Stocker, Roman; Reis, Pedro M.; Jung, Sunghwan

    2011-01-01

    We consider two biological phenomena taking place at the air-water interface: the water lapping of felines and the water running of lizards. Although seemingly disparate motions, we show that they are intimately linked by their underlying hydrodynamics and belong to a broader class of processes called Froude mechanisms. We describe how both felines and lizards exploit inertia to defeat gravity, and discuss water lapping and water running in the broader context of water exit and water entry, r...

  5. Investigation of the abrasive lapping of oxide ceramics

    Directory of Open Access Journals (Sweden)

    Almaz Mullayanovich Khanov

    2016-03-01

    Full Text Available In this paper the methods of ceramic materials treatments are summarized. For the treatment of a technical ceramics the grinding and finishing processes including the description of the treatment steps are reported. In the first step, up to 80% of the material is polished away and the grinding is carried out at increased velocities using a tool with larger grains. In the second step of grinding, the amount of the removed material is decreased and this step is carried out using the abrasive tool with smaller grains. The third step referred as finishing is done by diamond abrasive micro-powders and a paste with a certain grain size. Often, after this step the polishing is performed in order to achieve the precision class of 1-3 and low surface roughness. The abrasive finishing of the materials based on the oxide ceramics VSH-75 is investigated. It is found that the performance ability of the diamond micro-powder is higher by a factor of 15-30 compared to the electrocorundum and green silicon carbide micro-powders. By increasing the graininess, the amount of removed material and the roughness of a treated surface are increased. In order to achieve the Rz=0.8 µm it is recommended to use a synthetic diamond micro-powder ASM20. Additionally, the influence of the contact pressure of the part onto the lap in the range from 25 to 150 kPa is investigated. With the increase of the contact pressure from 25 to 50 kPa, the total removal is significantly increasing whereas the relative diamond micro-powder consumption and surface roughness are essentially decreasing. Further increase of the contact pressure up to 150 kPa has smaller effect on the process parameters, while the cracks appear at the tool surface deteriorating the external view of the tool. The optimal contact pressure during finishing of the ceramic using the cast iron lap SCH-28 is about 50-100 kPa

  6. Molten pool characterization of laser lap welded copper and aluminum

    Science.gov (United States)

    Xue, Zhiqing; Hu, Shengsun; Zuo, Di; Cai, Wayne; Lee, Dongkyun; Elijah, Kannatey-Asibu, Jr.

    2013-12-01

    A 3D finite volume simulation model for laser welding of a Cu-Al lap joint was developed using ANSYS FLUENT to predict the weld pool temperature distribution, velocity field, geometry, alloying element distribution and transition layer thickness—all key attributes and performance characteristics for a laser-welded joint. Melting and solidification of the weld pool was simulated with an enthalpy-porosity formulation. Laser welding experiments and metallographic examination by SEM and EDX were performed to investigate the weld pool features and validate the simulated results. A bowl-shaped temperature field and molten pool, and a unique maximum fusion zone width were observed near the Cu-Al interface. Both the numerical simulation and experimental results indicate an arch-shaped intermediate layer of Cu and Al, and a gradual transition of Cu concentration from the aluminum plate to the copper plate with high composition gradient. For the conditions used, welding with Cu on top was found to result in a better weld joint.

  7. Apoptosis in the lens anlage of the heritable lens aplastic mouse (lap mouse).

    Science.gov (United States)

    Aso, S; Tashiro, M; Baba, R; Sawaki, M; Noda, S; Fujita, M

    1998-08-01

    Adult homozygous lap mice show various eye abnormalities, such as aphakia, retinal disorganization, and dysplasia of the cornea and anterior chamber. In the fetal eye of a homozygous lap mouse, the lens placode seems to develop normally. However, the lens vesicle progresses abnormally to form a mass of cells without a cavity, and the mass vanishes soon afterward. We examined cell death in the lens anlage of this mutant. The lens anlagen of homozygous lap and normal mice from days 10 to 12 of gestation were observed by light microscopy after DNA end-labeling by immunohistochemistry and by transmission electron microscopy. By light microscopy, a slight frequency of cell death was detected in the lens anlage encircling the surface ectoderm and in the anlage or in the anlage of both homozygous lap mice and normal mice at day 10 of gestation. Cell death was seen in the lens anlage encircling the surface ectoderm in the normal mouse and sporadically in the anlage of the homozygous lap mouse at day 10.5 of gestation. Cell death was visible at the area of the lens vesicle attached to the surface ectoderm and encircling the surrounding surface ectoderm in the normal mouse, and in the lens anlage encircling the surface ectoderm and the apex areas of the lens anlage in the homozygous lap mouse at day 11 of gestation. At day 12 of gestation, almost no cell death was observed in the lens anlage of the normal mouse. However, extensive areas of cell death were still seen in the lens anlage at its apex, at the inner region, and encircling the surface ectoderm in the homozygous lap mouse. Electron microscopic observation showed that the dead cells observed in the lens anlagen by light microscopy in normal and lap mice are the result of apoptosis. In lap mice, cells with cytoplasmic condensation were observed mainly at days 10 and 10.5 of gestation. Many apoptotic bodies which had been phagocytosed by adjacent cells were seen predominantly at day 11 of gestation. At day 12 of

  8. Filamentous anoxygenic phototrophic bacteria from cyanobacterial mats of Alla hot springs (Barguzin Valley, Russia).

    Science.gov (United States)

    Gaisin, Vasil A; Kalashnikov, Alexander M; Sukhacheva, Marina V; Namsaraev, Zorigto B; Barhutova, Darima D; Gorlenko, Vladimir M; Kuznetsov, Boris B

    2015-11-01

    Alkaline hydrotherms of the Baikal rift zone are unique systems to study the diversity of thermophilic bacteria. In this study, we present data on the phototrophic bacterial community of cyanobacterial mats from the alkaline Alla hot spring. Using a clonal analysis approach, this study evaluated the species diversity, the proportion of oxygenic and anoxygenic phototrophs and their distribution between various areas of the spring. Novel group-specific PCR primers were designed and applied to detect representatives of the Chloroflexus and Roseiflexus genera in mat samples. For the first time, the presence of Roseiflexus-like bacteria was detected in the Baikal rift zone.

  9. Il volgare e il principe. Politica culturale e questione della lingua alla corte di Cosimo

    Directory of Open Access Journals (Sweden)

    Margherita Quaglino

    2015-09-01

    Full Text Available Il principato di Cosimo I rappresenta un periodo di snodo fondamentale per la questione della lingua italiana. Il contributo ripercorre la bibliografia degli ultimi vent’anni con l’intento di definirne le principali traiettorie e individuarne l’originalità e le prospettive future rispetto agli studi precedenti. Sono esaminati in particolare gli studi relativi all’opera di Benedetto Varchi e Vincenzio Borghini; ai volgarizzamenti di Giovan Battista Gelli e Cosimo Bartoli; alla redazione e all’edizione delle Vite di Vasari e al rapporto tra letterati e artisti nella celebrazione del potere.

  10. I giovani e la democrazia in Portogallo: alla ricerca di un nuovo paradigma?

    Directory of Open Access Journals (Sweden)

    Marco Lisi

    2012-08-01

    Full Text Available In Portogallo, al pari degli altri paesi europei, la disaffezione e l’apatia politica sono assai sviluppate, soprattutto tra le giovani generazioni. L’articolo utilizza i dati dell’indagine sulla qualità della democrazia per analizzare la relazione tra giovani e politica in Portogallo. La partecipazione non convenzionale e la mobilitazione cognitiva si stanno affermando, ma in maniera minore rispetto ad altri paesi, sebbene anche in Portogallo le mobilitazioni di protesta siano aumentate a seguito della crisi economica. La peculiarità del caso portoghese può essere spiegata come facendo riferimento alla breve storia democratica e alle caratteristiche del sistema politico.

  11. Female inheritance of malarial lap genes is essential for mosquito transmission.

    Science.gov (United States)

    Raine, J Dale; Ecker, Andrea; Mendoza, Jacqui; Tewari, Rita; Stanway, Rebecca R; Sinden, Robert E

    2007-03-01

    Members of the LCCL/lectin adhesive-like protein (LAP) family, a family of six putative secreted proteins with predicted adhesive extracellular domains, have all been detected in the sexual and sporogonic stages of Plasmodium and have previously been predicted to play a role in parasite-mosquito interactions and/or immunomodulation. In this study we have investigated the function of PbLAP1, 2, 4, and 6. Through phenotypic analysis of Plasmodium berghei loss-of-function mutants, we have demonstrated that PbLAP2, 4, and 6, as previously shown for PbLAP1, are critical for oocyst maturation and sporozoite formation, and essential for transmission from mosquitoes to mice. Sporozoite formation was rescued by a genetic cross with wild-type parasites, which results in the production of heterokaryotic polyploid ookinetes and oocysts, and ultimately infective Deltapblap sporozoites, but not if the individual Deltapblap parasite lines were crossed amongst each other. Genetic crosses with female-deficient (Deltapbs47) and male-deficient (Deltapbs48/45) parasites show that the lethal phenotype is only rescued when the wild-type pblap gene is inherited from a female gametocyte, thus explaining the failure to rescue in the crosses between different Deltapblap parasite lines. We conclude that the functions of PbLAPs1, 2, 4, and 6 are critical prior to the expression of the male-derived gene after microgametogenesis, fertilization, and meiosis, possibly in the gametocyte-to-ookinete period of differentiation. The phenotypes detectable by cytological methods in the oocyst some 10 d after the critical period of activity suggests key roles of the LAPs or LAP-dependent processes in the regulation of the cell cycle, possibly in the regulation of cytoplasm-to-nuclear ratio, and, importantly, in the events of cytokinesis at sporozoite formation. This phenotype is not seen in the other dividing forms of the mutant parasite lines in the liver and blood stages.

  12. Female inheritance of malarial lap genes is essential for mosquito transmission.

    Directory of Open Access Journals (Sweden)

    J Dale Raine

    2007-03-01

    Full Text Available Members of the LCCL/lectin adhesive-like protein (LAP family, a family of six putative secreted proteins with predicted adhesive extracellular domains, have all been detected in the sexual and sporogonic stages of Plasmodium and have previously been predicted to play a role in parasite-mosquito interactions and/or immunomodulation. In this study we have investigated the function of PbLAP1, 2, 4, and 6. Through phenotypic analysis of Plasmodium berghei loss-of-function mutants, we have demonstrated that PbLAP2, 4, and 6, as previously shown for PbLAP1, are critical for oocyst maturation and sporozoite formation, and essential for transmission from mosquitoes to mice. Sporozoite formation was rescued by a genetic cross with wild-type parasites, which results in the production of heterokaryotic polyploid ookinetes and oocysts, and ultimately infective Deltapblap sporozoites, but not if the individual Deltapblap parasite lines were crossed amongst each other. Genetic crosses with female-deficient (Deltapbs47 and male-deficient (Deltapbs48/45 parasites show that the lethal phenotype is only rescued when the wild-type pblap gene is inherited from a female gametocyte, thus explaining the failure to rescue in the crosses between different Deltapblap parasite lines. We conclude that the functions of PbLAPs1, 2, 4, and 6 are critical prior to the expression of the male-derived gene after microgametogenesis, fertilization, and meiosis, possibly in the gametocyte-to-ookinete period of differentiation. The phenotypes detectable by cytological methods in the oocyst some 10 d after the critical period of activity suggests key roles of the LAPs or LAP-dependent processes in the regulation of the cell cycle, possibly in the regulation of cytoplasm-to-nuclear ratio, and, importantly, in the events of cytokinesis at sporozoite formation. This phenotype is not seen in the other dividing forms of the mutant parasite lines in the liver and blood stages.

  13. Microstructure and Mechanical Properties of Friction Stir Lap Welded Aluminum Alloy AA2014

    Institute of Scientific and Technical Information of China (English)

    S. Babu; G.D. Janaki Ram; P.V. Venkitakrishnan; G. Madhusudhan Reddy; K. Prasad Rao

    2012-01-01

    Friction stir lap welds were produced in 3 mm thick Alclad sheets of Al alloy 2014-T4 using two different tools (with triangular and threaded taper cylindrical pins). The effects of tool geometry on weld microstructure, lap-shear performance and failure mode were investigated. The pin profile was found to significantly influence the hook geometry, which in turn strongly influenced the joint strength and the failure mode. Welds produced in alloy 2014-T4 Alclad sheets by using triangular and threaded taper cylindrical tools exhibited an average lap-shear failure load of 16.5 and 19.5 kN, respectively, while the average failure load for standard riveted joints was only 3.4 kN. Welds produced in alloy 2014-T6 Alclad sheets and in alloy 2014-T4 bare sheets (i.e., no Alclad) were comparatively evaluated with those produced in alloy 2014-T4 Alclad sheets. While the welds made (with threaded taper cylindrical tool) in T6 and T4 conditions showed very similar lap-shear failure loads, the joint efficiency of the welds made in T6 condition (43%) was considerably lower (because of the higher base material strength) than those made in T4 condition (51%). The Alclad layers were found to present no special problems in friction stir lap welding. Welds made with triangular tool in alloy 2014-T4 Alclad and bare sheets showed very similar lap-shear failure loads. The present work provides some useful insights into the use of friction stir welding for joining Al alloys in lap configuration.

  14. Fighting desertification in Italy and the Mediterranean basin; La lotta alla desertificazione in Italia e nel bacino del Mediterraneo

    Energy Technology Data Exchange (ETDEWEB)

    Sciortino, M.; Colonna, N.; Ferrara, V.; Grauso, S.; Iannetta, M. [ENEA, Centro Ricerche Casaccia, Rome (Italy). Div. Biotecnologie e Agricoltura; Svalduz, A. [FIDAF-Federazione Italian Dottori Agronomi e Forestali (Italy)

    2000-04-01

    Desertification is a worldwide phenomenon of alarming proportions, and its affects rich as well as poor countries. The United Nations supports the fight against desertification through a specific convention signed by over 160 countries. Italy's commitments thereunder include drawing up a National Action Plan (NAP) to combat desertification causes and proposals from the scientific community and relevant economic sectors. The NAP assigns key roles to the regions and river basin authorities, which are required to prepare made-to-order programmes for soil protection, sustainable management of water resources, reduction of human impact, and terrestrial balance. [Italian] L'Italia, che ha aderito alla Convenzione delle Nazioni Unite sulla lotta alla siccita' e alla desertificazione, ha approvato il Programma di Azione Nazionale per contrastare un fenomeno che minaccia la stabilita' del bacino del Mediterraneo.

  15. SHM of single lap adhesive joints using subharmonic frequencies

    Science.gov (United States)

    Ginzburg, D.; Ciampa, F.; Scarselli, G.; Meo, M.

    2017-10-01

    The increased usage of adhesive bonding as a joining method in modern aerospace components has led to developing reliable ultrasonic health monitoring systems for detection of regions of poor adhesion. Nonlinear acousto-ultrasonic techniques based on higher harmonics and subharmonic frequencies have shown to be sensitive to the detection of micro-voids and disbonds. Nonlinear resonance properties of disbonds generate various nonlinear phenomena such as self-modulation, subharmonics, hysteresis and so on. By exploiting the local natures of these phenomena, this paper demonstrates the use of subharmonics for detection and imaging of flaws in bonded structures. To optimise the experimental testing a two-dimensional analytical model and a three-dimensional finite element analysis simulation were developed for understanding the generation of nonlinear elastic effects with emphasis on subharmonic frequency components. The proposed analytical model qualitatively described the generation of subharmonics but also higher harmonics due to the nonlinear intermodulation of the driving and resonance frequencies associated with the disbonded region. The numerical model was developed by modifying the user defined cohesive element formulation with a bi-linear traction-displacement relationship in order to simulate the interaction of elastic waves with the structural disbond. Whilst the analytical model supported the selection of the driving frequency, the numerical one successfully predicted the generation of subharmonic frequencies originating in the disbonded area. Experimental tests were conducted on a disbonded single lap joint structure using surface-bonded piezoelectric transducers and a laser-Doppler vibrometer, and allowed to validate the analytical and numerical results. It was clearly demonstrated that the nonlinear resonance effects in the form of subharmonics could be used to discriminate reliably regions of poor adhesion in bonded structures. This work can lead to new

  16. Di madre in figlio: per una storia dell’educazione alla corte dei Medici

    Directory of Open Access Journals (Sweden)

    Maria Pia Paoli

    2011-10-01

    Full Text Available In questo saggio si affronta la storia dell’educazione alla corte dei Medici tra Cinque e Seicento, privilegiando il rapporto fra le granduchesse e i loro figli. Le fonti utilizzate per una prima indagine sul tema sono alcuni ruoli della corte dall’epoca di Cosimo I a quella di Cosimo III, i carteggi del fondo Mediceo del Principato e alcune fonti letterarie attinenti ai programmi pedagogici concepiti per i giovani principi di casa Medici. La scelta del lungo periodo è motivata dall’intento di cogliere i passaggi cruciali che connotano nel tempo l’evoluzione in senso nobiliare-cavalleresco dell’educazione dei primogeniti e dei cadetti maschi, mentre per le principesse destinate al matrimonio o al convento si delinea la persistenza dei modelli educativi legati alle virtù domestiche e morali in genere, calibrate di volta in volta sulle inclinazioni personali. Il denominatore comune di una regia pedagogica articolata fu quello che corrispose al graduale passaggio dalla casa, alla corte, al mondo, dove l’immagine e la reputazione di principi e principesse doveva proiettarsi per l’onore della famiglia, dello Stato e del rango.

  17. Città e conoscenza, il sapere per fare e le conoscenze scientifiche alla origine della città

    Directory of Open Access Journals (Sweden)

    Luigi Scarpa

    2013-07-01

    Full Text Available La conoscenza e l’articolazione dei saperi sono innegabilmente alla base della nascita delle civiltà urbane e delle loro dinamiche evolutive, spingendosi sino al raggiungimento delle iperspecializzazioni caratterizzanti la struttura delle città contemporanee.  La modernità ha esaltato un nuovo paradigma della conoscenza costituito dalla comunicazione. Per molti secoli essa è stata rappresentata solo dal linguaggio scritto. L’avvento delle telecomunicazioni e di internet in particolare ha profondamente trasformato i meccanismi di accesso alle informazioni ed alla conoscenza

  18. Alla ricerca di una politica del diritto sui rapporti con l’Islam (Carta dei valori e Dichiarazione di intenti

    Directory of Open Access Journals (Sweden)

    Nicola Colaianni

    2013-01-01

    Full Text Available Riscrittura, aggiornata con qualche nota, degli appunti di un intervento svolto al convegno al Convegno su Identità religiosa e integrazione dei Musulmani in Italia e in Europa, omaggio alla memoria di Francesco Castro (Roma, 22 maggio 2008, destinato alla pubblicazione negli Atti.SOMMARIO: 1. Inizio dei rapporti tra Stato e Islam italiano – 2. Costituzione e Carta dei valori – 3. Carta dei valori e dichiarazione di intenti – 4. Dichiarazione di intenti e intese (nonché legge sulla libertà di religione.

  19. Failure load prediction of single lap adhesive joints using artificial neural networks

    Directory of Open Access Journals (Sweden)

    Erdi Tosun

    2016-06-01

    Full Text Available The objective of this paper was to predict the failure load in single lap adhesive joints subjected to tensile loading by using artificial neural networks. Experimental data obtained from the literature cover the single lap adhesive joints with various geometric models under the tensile loading. The data are arranged in a format such that two input parameters cover the length and width of bond area in single lap adhesive joints and the corresponding output is the ultimate failure load. An artificial neural network model was developed to estimate relationship between failure loads by using geometric dimensions of bond area as input data. A three-layer feedforward artificial neural network that utilized Levenberg–Marquardt learning algorithm model was used in order to train network. It was observed that artificial neural network model can estimate failure load of single lap adhesive joints with acceptable error. Mean absolute percentage error and Nash–Sutcliffe coefficient of efficiency values of both training and testing data were 3.523 and 3.524 and 0.997 and 0.992, respectively. The results showed that the artificial neural network is an efficient alternative method to predict the failure load of single lap adhesive joints. Also estimated results are in very good agreement with the experimental data.

  20. In ovo Administration of Ghrelin and Subsequent Intestinal Leucine aminopeptidase (LAP Activity in Broiler Chickens

    Directory of Open Access Journals (Sweden)

    J. Ghiasi Ghaleh-kandi,

    2011-02-01

    Full Text Available Aim of this study was to investigation on effect of in ovo administration of ghrelin on subsequent Leucine Aminopeptidase (LAP activity in broiler chickens. In this experiment 250 fertilized eggs were collected from commercial breeder flock. The eggs were divided into five experimental groups; control T1 (without injection, group T2 (in ovo injected with solution, group T3 (in ovo injected with 50 μg/egg ghrelin, group T4 (in ovo injected with 100 μg/egg ghrelin and group T5 (in ovo injected with 150 μg/egg ghrelin. All of groups were incubated. In ovo injection was done at day 7 of incub ation. in ovo administration of 150 μg/egg ghrelin in embryonic period, could stimulate LAP activity at 21-day- old chicks in 10, 30 and 50% of intestine with 3520.4, 266.9, 4595.6 IU/g protein, also in ovo injected 50 and 150 μg/egg ghrelin could stimulate LAP activity in 1, 50 and 70% of intestine with 3071.4, 4779.3 and 5013.4 IU/g. In 42-day-old chicks, in ovo injected 50 μg/egg ghrelin could stimulate LAP activity in 1, 10, 30, 40, 70, and 90% percent of intestine. These findings demonstrated stimulatory effects of ghrelin in low doses (50 μg in chicken intestine LAP activity.

  1. Evaluation of pediatric use patterns and performance of lap shoulder belt systems in the center rear.

    Science.gov (United States)

    Arbogast, Kristy B; Durbin, Dennis R; Kallan, Michael J; Winston, Flaura K

    2004-01-01

    Lap and shoulder belts have been required in rear outboard positions since 1989. A recent congressional mandate encouraged the requirement of a lap and shoulder belt in the center rear seat position. This study utilized Data from the Partners for Child Passenger Safety study, a large-scale child-focused crash surveillance system, to quantify changes in seating patterns for children in vehicles that already have this feature compared to those which do not and measured the safety benefit associated with the provision of a shoulder belt in the center rear seat position. The data demonstrate that the presence of a shoulder belt in the center rear seating position influences seating practices only when there is a single child occupant in the vehicle. Belted children in the center rear of vehicles equipped with a lap shoulder belt are at an 81% reduction in risk of injury than those belted in the center rear equipped with a lap only belt. The data suggest that by requiring lap shoulder belts in the center rear, benefits would be realized to belted children, specifically the 4-8 year old group.

  2. Noise generated by model step lap core configurations of grain oriented electrical steel

    Energy Technology Data Exchange (ETDEWEB)

    Snell, David [Cogent Power Ltd., Development and Market Research, Orb Electrical Steels, Corporation Road, Newport, South Wales NP19 OXT (United Kingdom)], E-mail: Dave.snell@cogent-power.com

    2008-10-15

    Although it is important to reduce the power loss associated with transformer cores by use of electrical steel of the optimum grade, it is equally important to minimise the noise generated by the core. This paper discusses the effect of variations in the number of steps (3, 5, and 7) and the step overlap (2, 4, and 6 mm) on noise associated with model step lap cores of conventional, high permeability and ball unit domain refined high permeability grain oriented electrical steel. A-weighted sound pressure level noise measurements (LAeq) were made at various locations of the core over the frequency range 25-16,000 Hz. For all step lap cores investigated, the noise generated was dependent on the induction level, and on the number of steps and step overlap employed. The use of 3 step lap cores and step overlaps of 2 mm should be avoided, if low noise is to be achieved. There was very little difference between the noise emitted by the 5 and 7 step lap cores. Similar noise levels were noted for 27M0H material in the non-domain refined (NDR) and ball unit domain refined condition for a 5 step lap core with 6 mm step overlap.

  3. MINITYPE MACHINING SYSTEM FOR DIAMOND LAPPING & POLISHING BY USING BRUSHLESS DIRECT CURRENT MOTOR AS PRECISE SPINDLE

    Institute of Scientific and Technical Information of China (English)

    FU Huinan; CHEN Dongsheng; ZHAO Yong; LIN Binquan

    2008-01-01

    A minitype precise spindle system which can machine precisely and stably in the process of diamond lapping and polishing is designed. In such minitype spindle system, the brushless DC spindle motor is used to drive the lapping finish table, which is built with fluid dynamic bearings. Some measures have been taken to make the lapping system dynamic balance, and a servo controller which can adjust the speed of motor from 1 200 r/min to 5 400 r/min is designed. Experiments show that the spindle system is reliable and stable for diamond polishing, and the detection results by atomic force microscope(AFM) show that the surfaces of diamond edge's Ra is 6.725 nm and whole diamond average Ra is 3.25 nm.

  4. Support and Development of Workflow Protocols for High Throughput Single-Lap-Joint Testing - Data Management

    Science.gov (United States)

    2013-04-01

    mode equipped with a 22 kN load cell and mechanical wedge grips. The length in the jaws of the grippers was set at 25.4 mm. The lap shear tests...identification (ID). The work flow scheme used transfers and converts rele- vant load versus displacement raw data directly to MSAT as a verifiable digital...J.K. Spelt, Int. J. Adh. & Adhesives, 2009, 29, pp 319–330. . Figure 1. Raw data load-versus displacement curve captured for single-lap

  5. Pono tibi istam: “Tu curris”.Uno sguardo alla teoria medievale delle obbligazioni

    Directory of Open Access Journals (Sweden)

    Riccardo Strobino

    2008-12-01

    Full Text Available La teoria delle obbligazioni rappresenta un significativo esempio di come un insieme di tecniche logiche possa essere applicato, in maniera feconda, a contesti disputazionali in cui la dimensione dialogica e l’interazione tra soggetti coinvolti in un confronto dialettico hanno un ruolo di primo piano. L’attenzione che numerosi studiosi hanno manifestato nei confronti di questa parte della logica modernorum negli ultimi quarat’anni testimonia la profondità e la difficoltà dei problemi teorici che stanno alla base della teoria. Molte interpretazioni sono state avanzate circa le motivazioni che spingono i logici medievali a scrivere trattati in cui il portato delle loro dottrine logiche – come, ad esempio, la teoria delle consequentiae - viene declinato ed elaboratamente applicato al gioco dialettico tra due disputanti. La gamma di tali letture comprende differenti ipotesi: la teoria delle obbligazioni potrebbe fornire un nucleo di regole per l’impostazione di un metodo assiomatico rudimentale così come rappresentare un tentativo di elaborare esercizi volti a valutare le capacità logiche degli studenti o, ancora, un gioco teorico, svincolato dall’effettiva applicazione a contesti concreti, la cui finalità sarebbe il mantenimento della coerenza logica. E’ stata sostenuta da più interpreti la funzione pedagogica svolta dalla teoria, al di là del fatto che si tratti o meno di un metodo per la conduzione effettiva di dispute reali. Un’altra linea interpretativa collega la teoria delle obbligazioni al contesto della letteratura dei sophismata e degli insolubilia, dal cui repertorio, in effetti, sono spesso tratti molti degli esempi che si incontrano nella lettura dei trattati de obligationibus. In questo senso, la teoria offrirebbe regole e schemi di risposta che un interlocutore deve utilizzare per risolvere o rispondere a enunciati problematici o paradossali. Non si può escludere, inoltre, che nella teoria si realizzi un

  6. Laaneots võtab sõja korral püssi alla 30 000 meest / Vahur Koorits

    Index Scriptorium Estoniae

    Koorits, Vahur, 1981-

    2010-01-01

    Kaitseväe mobilisatsiooniplaanist. Kaitseväe juhataja Ants Laaneots teeb ettevalmistusi mobilisatsiooniks, et sõjaohu korral püssi alla võtta 30 000 meest. Eesti suudaks mobiliseerida Lätist ja Leedust palju rohkem mehi. Diagramm

  7. Architettura Post-Decostruttivista Zaha Hadid e le nuove generazioni dai campi di continuità alla biomimesi parametrica

    OpenAIRE

    2014-01-01

    Partendo dalla ricerca architettonica successiva al movimento decostruttivista dall'invenzione dei campi di continuità fino alla biomimesi dell'architettura "parametrica", il testo indaga la formazione e l'opera di Zaha Hadid e anticipa l'apporto contemporaneo delle nuove generazioni attraverso la prospettiva teorica della complessità di Edgar Morin.

  8. LAP TGF-Beta Subset of CD4+CD25+CD127− Treg Cells is Increased and Overexpresses LAP TGF-Beta in Lung Adenocarcinoma Patients

    Science.gov (United States)

    Islas-Vazquez, Lorenzo; Prado-Garcia, Heriberto; Aguilar-Cazares, Dolores; Meneses-Flores, Manuel; Galicia-Velasco, Miriam; Romero-Garcia, Susana; Camacho-Mendoza, Catalina; Lopez-Gonzalez, Jose Sullivan

    2015-01-01

    Lung cancer is the leading cause of cancer death worldwide. Adenocarcinoma, the most commonly diagnosed histologic type of lung cancer, is associated with smoking. Cigarette smoke promotes inflammation on the airways, which might be mediated by Th17 cells. This inflammatory environment may contribute to tumor development. In contrast, some reports indicate that tumors may induce immunosuppressive Treg cells to dampen immune reactivity, supporting tumor growth and progression. Thus, we aimed to analyze whether chronic inflammation or immunosuppression predominates at the systemic level in lung adenocarcinoma patients, and several cytokines and Th17 and Treg cells were studied. Higher proportions of IL-17-producing CD4+ T-cells were found in smoking control subjects and in lung adenocarcinoma patients compared to nonsmoking control subjects. In addition, lung adenocarcinoma patients increased both plasma concentrations of IL-2, IL-4, IL-6, and IL-10, and proportions of Latency Associated Peptide (LAP) TGF-β subset of CD4+CD25+CD127− Treg cells, which overexpressed LAP TGF-β. This knowledge may lead to the development of immunotherapies that could inhibit the suppressor activity mediated by the LAP TGF-β subset of CD4+CD25+CD127− Treg cells to promote reactivity of immune cells against lung adenocarcinoma cells. PMID:26582240

  9. LAP TGF-Beta Subset of CD4+CD25+CD127− Treg Cells is Increased and Overexpresses LAP TGF-Beta in Lung Adenocarcinoma Patients

    Directory of Open Access Journals (Sweden)

    Lorenzo Islas-Vazquez

    2015-01-01

    Full Text Available Lung cancer is the leading cause of cancer death worldwide. Adenocarcinoma, the most commonly diagnosed histologic type of lung cancer, is associated with smoking. Cigarette smoke promotes inflammation on the airways, which might be mediated by Th17 cells. This inflammatory environment may contribute to tumor development. In contrast, some reports indicate that tumors may induce immunosuppressive Treg cells to dampen immune reactivity, supporting tumor growth and progression. Thus, we aimed to analyze whether chronic inflammation or immunosuppression predominates at the systemic level in lung adenocarcinoma patients, and several cytokines and Th17 and Treg cells were studied. Higher proportions of IL-17-producing CD4+ T-cells were found in smoking control subjects and in lung adenocarcinoma patients compared to nonsmoking control subjects. In addition, lung adenocarcinoma patients increased both plasma concentrations of IL-2, IL-4, IL-6, and IL-10, and proportions of Latency Associated Peptide (LAP TGF-β subset of CD4+CD25+CD127− Treg cells, which overexpressed LAP TGF-β. This knowledge may lead to the development of immunotherapies that could inhibit the suppressor activity mediated by the LAP TGF-β subset of CD4+CD25+CD127− Treg cells to promote reactivity of immune cells against lung adenocarcinoma cells.

  10. The Argonaut Myth in the Novel Alla cieca by Claudio Magris

    Directory of Open Access Journals (Sweden)

    Irena Prosenc

    2012-12-01

    Full Text Available The paper analyses the disintegration of identity and fragmentation of the narrative voice in the novel Alla cieca (Blindly, 2005 by Claudio Magris. Through the metaphor of sailing, the Trieste writer explores various aspects of narration, focusing on the autobiographical narrative; furthermore, he reflects on the multiple identity of the modern ego and on the destructive force of History, whose oppression has been perpetuated in the recent periods as well. The many issues addressed by the novel are connected by the continuous presence of the Argonaut myth, evoked by numerous intertextual references to the Argonautica by Apollonius Rhodius and to the Argonautica Orphica – a title which is, in contrast to that of the Hellenistic poem, not explicitly cited in the text.

  11. Sulle ipotesi che stanno alla base della geometria e altri scritti scientifici e filosofici

    CERN Document Server

    Riemann, Bernhard

    1994-01-01

    Il volume raccoglie, oltre al testo della lezione del 1854 che dà il titolo all'opera, alcuni scritti di carattere scientifico e filosofico di Riemann. A saggi di argomento scientifico si affiancano scritti di argomento più direttamente metodologico. La concezione della scienza che ci viene offerta da questi scritti è assai significativa del personaggio e della sua epoca. Per Riemann la matematica non è un mero strumento esteriore da applicare, appunto dall'esterno, ai fenomeni. Al contrario, essa consente di spingersi con il rigore necessario oltre alla superficie dei fenomeni e di penetrare sempre più a fondo nella realtà, nell'ottica di un sistema unitario e quasi metafisico del sapere scientifico.

  12. Le ultime tecnologie hanno aiutato i primi soccorsi alla Costa Concordia

    Directory of Open Access Journals (Sweden)

    Andrea Faccioli

    2012-05-01

    Full Text Available Grazie alla geomatica e alle tecnologie più avanzate è stato ricostruito in poche ore un rilievo tridimensionale - sopra e sott’acqua - dello scafo e del fondale relativo al naufragio della nave Costa Concordia utilizzando un sonar Multibeam Reson 7125 e un laser scanner Optech ILRIS HD con interventi condotti in condizioni di estrema sicurezza, garantendo la protezione sia dei soccorritori che del delicato ambiente naturale. Geomatics assists early intervention on the Costa ConcordiaThanks to the Geomatics, the Costa Concordia operations are conducted in conditions of extreme security to protect both the lives of rescue workers and the delicate environment.All technologies involved (Lidar, Multibeam, GNSS, INS, ecc…, while having a primary role in real life, have always worked quietly behind the scenes. 

  13. Le ultime tecnologie hanno aiutato i primi soccorsi alla Costa Concordia

    Directory of Open Access Journals (Sweden)

    Andrea Faccioli

    2012-04-01

    Full Text Available Grazie alla geomatica e alle tecnologie più avanzate è stato ricostruito in poche ore un rilievo tridimensionale - sopra e sott’acqua - dello scafo e del fondale relativo al naufragio della nave Costa Concordia utilizzando un sonar Multibeam Reson 7125 e un laser scanner Optech ILRIS HD con interventi condotti in condizioni di estrema sicurezza, garantendo la protezione sia dei soccorritori che del delicato ambiente naturale. Geomatics assists early intervention on the Costa ConcordiaThanks to the Geomatics, the Costa Concordia operations are conducted in conditions of extreme security to protect both the lives of rescue workers and the delicate environment.All technologies involved (Lidar, Multibeam, GNSS, INS, ecc…, while having a primary role in real life, have always worked quietly behind the scenes. 

  14. La trasformazione del paesaggio: un ponte dalle origini alla prospettiva del divenire

    Directory of Open Access Journals (Sweden)

    Ernesto Cravero

    2012-08-01

    Full Text Available Lo stato attuale la pianificazione territoriale, nel nostro Paese, avviene ancora in un’ottica circoscritta. Si pianifica sì, ovunque vi siano indirizzi dettati a scala provinciale o regionale ma mancano i grandi indirizzi di pianificazione transregionali che permetterebbero di superare logiche tutto sommato limitate, legate solo alla necessità di rispettare artificiali e innaturali limiti amministrativi. Questa è una grande lacuna nell’ambito del nostro sistema di programmazione nazionale.La conoscenza di un territorio in tutte le sue componenti è necessaria per poter solo ipotizzare le prospettive di uno sviluppo non solo sostenibile ma realizzabile. Per questo, l’esercizio della pianificazione più che una pratica scientifica o tecnico-professionale assume gli aspetti di una vera e propria arte dove i migliori esegeti sono chiamati, collegialmente, interdisciplinariamente, a dare il loro apporto costruttivo.

  15. La verità dalla materia alla prassi. Il realismo pragmatico

    Directory of Open Access Journals (Sweden)

    Erica Della Valle

    2011-10-01

    Full Text Available

    Giulio Preti in Praxis ed empirismo (1957 elabora un realismo pragmatico che, avvalendosi della connessione fra la filosofia del giovane Marx e le tesi del pragmatismo, nella versione di Dewey, permette di dare un contributo prezioso alla costruzione di una nuova proposta filosofica volta ad affermare che conoscere, interpretare, spiegare e modificare il mondo vanno di pari passo.

    The truth from the material to the practice. The pragmatic realism

    Giulio Preti in Praxis and Empiricism (1957 develops a pragmatic realism that, using the connection between the philosophy of the young Marx and the theory of pragmatism, as Dewey, can make a valuable contribution to the construction of a new proposal: knowing, interpreting, explaining and changing the world go hand in hand.

     

  16. La nuova Carta Geologica d’Italia alla scala 1:1.250.000

    Directory of Open Access Journals (Sweden)

    Marco Pantaloni

    2007-03-01

    Full Text Available Una carta così concepita ha come scopo quello di diffondere in ambito scientifico ma anche, e soprattutto, in ambito didattico, la conoscenza geologica del territorio. L’obiettivo che l’APAT si è impegnato a raggiungere tramite di essa è infatti quello di far arrivare ad un pubblico molto ampio di studiosi, di insegnanti, di studenti e di appassionati, una sintesi delle conoscenze finora raccolte nell’ambito della più recente realizzazione cartografica, la già citata carta geologica alla scala 1:50.000. L’ultima, in ordine di tempo, delle carte a piccola scala realizzate dal Servizio Geologico d’Italia è rappresentata dalla Carta Geologica a scala 1:500.000 pubblicata in 5 fogli durante il periodo 1976-1983.

  17. La teoria della radiazione termica dalla fisica classica alla fisica quantistica

    CERN Document Server

    Planck, Max

    1999-01-01

    La venuta alla luce, nella scienza fisica dei primi anni del Novecento, di elementi assolutamente nuovi prefiguranti il futuro mondo quantistico, è concordemente attribuita all'opera prevalente di Planck e di Einstein, secondo due linee di ricerca profondamente diverse, anche se non lontane risultano le loro concezioni del mondo fisico. Tuttavia, mentre del secondo è facilmente accessibile e sufficientemente nota la produzione scientifica, del primo risulta ancora scarsamente sconosciuta l'ingente produzione di quegli anni, anche perché reperibile, per la maggior parte, solo in lingua originale. Se si tiene presente, inoltre, la comparsa in tempi recenti, della ricostruzione storiografica non tradizionale di T. Kuhn, che ritiene di cogliere, negli scritti di Planck, la permanenza di una struttura integralmente classica fino ad anni successivi al 1906, data di pubblicazione delle Lezioni, risulta naturale convenire sull'opportunità di rendere più agevole l'accesso alle fonti planckiane di quegli anni. ...

  18. The Fundamental Reasons Why Laptop Computers should not be Used on Your Lap.

    Science.gov (United States)

    Mortazavi, S A R; Taeb, S; Mortazavi, S M J; Zarei, S; Haghani, M; Habibzadeh, P; Shojaei-Fard, M B

    2016-12-01

    As a tendency to use new technologies, gadgets such as laptop computers are becoming more popular among students, teachers, businessmen and office workers. Today laptops are a great tool for education and learning, work and personal multimedia. Millions of men, especially those in the reproductive age, are frequently using their laptop computers on the lap (thigh). Over the past several years, our lab has focused on the health effects of exposure to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile phone jammers, laptop computers, radars, dentistry cavitrons and Magnetic Resonance Imaging (MRI). Our own studies as well as the studies performed by other researchers indicate that using laptop computers on the lap adversely affects the male reproductive health. When it is placed on the lap, not only the heat from a laptop computer can warm men's scrotums, the electromagnetic fields generated by laptop's internal electronic circuits as well as the Wi-Fi Radiofrequency radiation hazards (in a Wi-Fi connected laptop) may decrease sperm quality. Furthermore, due to poor working posture, laptops should not be used on the lap for long hours.

  19. Correlates of Mood and RPE During Multi-Lap Off-Road Cycling.

    Science.gov (United States)

    Viana, Bruno Ferreira; Pires, Flávio Oliveira; Inoue, Allan; Micklewright, Dominic; Santos, Tony Meireles

    2016-03-01

    This study examined the relationship between mood and rating of perceived exertion (RPE) during a simulated multiple-lap time trial (MLTT). Nineteen male cyclists performed a MLTT consisting of four 9.9 km laps, each lap with a gradient ranging from 0 to 10 %. Mood as measured by the Profile of Mood States Questionnaire (POMS) and perceived exertion as measured by the Borg CR100 scale (RPE) were obtained at the end of each lap. A categorical multiple regressive model, having median of POMS subscales as independent variables, was obtained to explain the variance in median RPE responses. Increases in POMS fatigue scores and decreases in POMS vigour scores were observed throughout the MLTT (P < 0.001). A linear increase in RPE during the MLTT was also observed (P < 0.001). POMS fatigue subscale scores accounted for 88 % of the variance in RPE during the MLTT (R(2) = 0.88, P = 0.002), and no other POMS subscale improved the final predictive model. With the exception of fatigue these results suggest that most aspects of mood do not have a discernable effect on RPE during a MLTT. The rate of increase in RPE can predict the MLTT endpoint.

  20. Improving Critical Thinking Skills Using Learning Model Logan Avenue Problem Solving (LAPS)-Heuristic

    Science.gov (United States)

    Anggrianto, Desi; Churiyah, Madziatul; Arief, Mohammad

    2016-01-01

    This research was conducted in order to know the effect of Logan Avenue Problem Solving (LAPS)-Heuristic learning model towards critical thinking skills of students of class X Office Administration (APK) in SMK Negeri 1 Ngawi, East Java, Indonesia on material curve and equilibrium of demand and supply, subject Introduction to Economics and…

  1. The impact of layer thickness on the performance of additively manufactured lapping tools

    Science.gov (United States)

    Williams, Wesley B.

    2015-10-01

    Lower cost additive manufacturing (AM) machines which have emerged in recent years are capable of producing tools, jigs, and fixtures that are useful in optical fabrication. In particular, AM tooling has been shown to be useful in lapping glass workpieces. Various AM machines are distinguished by the processes, materials, build times, and build resolution they provide. This research investigates the impact of varied build resolution (specifically layer resolution) on the lapping performance of tools built using the stereolithographic assembly (SLA) process in 50 μm and 100 μm layer thicknesses with a methacrylate photopolymer resin on a high resolution desktop printer. As with previous work, the lapping tools were shown to remove workpiece material during the lapping process, but the tools themselves also experienced significant wear on the order of 2-3 times the mass loss of the glass workpieces. The tool wear rates for the 100 μm and 50 μm layer tools were comparable, but the 50 μm layer tool was 74% more effective at removing material from the glass workpiece, which is attributed to some abrasive particles being trapped in the coarser surface of the 100 um layer tooling and not being available to interact with the glass workpiece. Considering the tool wear, these additively manufactured tools are most appropriate for prototype tooling where the low cost (machined tool.

  2. The Fundamental Reasons Why Laptop Computers should not be Used on Your Lap

    Directory of Open Access Journals (Sweden)

    Mortazavi S. A. R.

    2016-12-01

    Full Text Available As a tendency to use new technologies, gadgets such as laptop computers are becoming more popular among students, teachers, businessmen and office workers. Today laptops are a great tool for education and learning, work and personal multimedia. Millions of men, especially those in the reproductive age, are frequently using their laptop computers on the lap (thigh. Over the past several years, our lab has focused on the health effects of exposure to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile phone jammers, laptop computers, radars, dentistry cavitrons and Magnetic Resonance Imaging (MRI. Our own studies as well as the studies performed by other researchers indicate that using laptop computers on the lap adversely affects the male reproductive health. When it is placed on the lap, not only the heat from a laptop computer can warm men’s scrotums, the electromagnetic fields generated by laptop’s internal electronic circuits as well as the Wi-Fi Radiofrequency radiation hazards (in a Wi-Fi connected laptop may decrease sperm quality. Furthermore, due to poor working posture, laptops should not be used on the lap for long hours.

  3. Progerin reduces LAP2α-telomere association in Hutchinson-Gilford progeria.

    Science.gov (United States)

    Chojnowski, Alexandre; Ong, Peh Fern; Wong, Esther S M; Lim, John S Y; Mutalif, Rafidah A; Navasankari, Raju; Dutta, Bamaprasad; Yang, Henry; Liow, Yi Y; Sze, Siu K; Boudier, Thomas; Wright, Graham D; Colman, Alan; Burke, Brian; Stewart, Colin L; Dreesen, Oliver

    2015-08-27

    Hutchinson-Gilford progeria (HGPS) is a premature ageing syndrome caused by a mutation in LMNA, resulting in a truncated form of lamin A called progerin. Progerin triggers loss of the heterochromatic marker H3K27me3, and premature senescence, which is prevented by telomerase. However, the mechanism how progerin causes disease remains unclear. Here, we describe an inducible cellular system to model HGPS and find that LAP2α (lamina-associated polypeptide-α) interacts with lamin A, while its interaction with progerin is significantly reduced. Super-resolution microscopy revealed that over 50% of telomeres localize to the lamina and that LAP2α association with telomeres is impaired in HGPS. This impaired interaction is central to HGPS since increasing LAP2α levels rescues progerin-induced proliferation defects and loss of H3K27me3, whereas lowering LAP2 levels exacerbates progerin-induced defects. These findings provide novel insights into the pathophysiology underlying HGPS, and how the nuclear lamina regulates proliferation and chromatin organization.

  4. iLAP: a workflow-driven software for experimental protocol development, data acquisition and analysis

    Directory of Open Access Journals (Sweden)

    McNally James

    2009-01-01

    Full Text Available Abstract Background In recent years, the genome biology community has expended considerable effort to confront the challenges of managing heterogeneous data in a structured and organized way and developed laboratory information management systems (LIMS for both raw and processed data. On the other hand, electronic notebooks were developed to record and manage scientific data, and facilitate data-sharing. Software which enables both, management of large datasets and digital recording of laboratory procedures would serve a real need in laboratories using medium and high-throughput techniques. Results We have developed iLAP (Laboratory data management, Analysis, and Protocol development, a workflow-driven information management system specifically designed to create and manage experimental protocols, and to analyze and share laboratory data. The system combines experimental protocol development, wizard-based data acquisition, and high-throughput data analysis into a single, integrated system. We demonstrate the power and the flexibility of the platform using a microscopy case study based on a combinatorial multiple fluorescence in situ hybridization (m-FISH protocol and 3D-image reconstruction. iLAP is freely available under the open source license AGPL from http://genome.tugraz.at/iLAP/. Conclusion iLAP is a flexible and versatile information management system, which has the potential to close the gap between electronic notebooks and LIMS and can therefore be of great value for a broad scientific community.

  5. Learning Activity Package, Chemistry I. LAP Numbers 22, 23, 24, 25, 26, 27, and 28.

    Science.gov (United States)

    Jones, Naomi

    As a set of seven Learning Activity Packages (LAPs) for individualized instruction in chemistry, the units cover the unit system, matter, energy, atomic structures, chemical formulas, physical states of matter, solutions and suspensions, ionization, acids, bases, and salts. Each unit contains a rationale for the material; a list of behavioral…

  6. Determination of Arsenic Poisoning and Metabolism in Hair by Synchrotron Radiation: The Case of Phar Lap

    Energy Technology Data Exchange (ETDEWEB)

    Kempson, Ivan M.; Henry, Dermot A. (Museum Vic.); (U. South Australia)

    2010-08-26

    Fresh physical evidence about the demise of the racehorse Phar Lap (see photograph) has been gathered from the study of mane hair samples by synchrotron radiation analysis with high resolution X-ray fluorescence (XRF) and X-ray absorption near edge structure (XANES) analyses. The results are indicative of arsenic ingestion and metabolism, and show that the racing champion died from arsenic poisoning.

  7. Hypoplastic basement membrane of the lens anlage in the inheritable lens aplastic mouse (lap mouse).

    Science.gov (United States)

    Aso, S; Baba, R; Noda, S; Ikuno, S; Fujita, M

    2000-04-01

    Adult homozygous lap mice show various eye abnormalities such as aphakia, retinal disorganization, and dysplasia of the cornea and anterior chamber. In the fetal eye of a homozygous lap mouse, the lens placode appears to develop normally. However, the lens vesicle develops abnormally to form a mass of cells without a cavity, and the mass vanishes soon afterward. Apoptotic cell death is associated with the disappearance of the lens anlage. We examined the basement membranes of the lens anlage of this mutant by immunohistochemical methods under light microscopy using antibodies against basement membrane components of the lens anlage, type IV collagen, fibronectin, laminin, heparan sulfate proteoglycan, and entactin and by transmission electron microscopy. Immunohistochemistry showed the distribution and intensity of antibody binding to the lens anlage to be almost the same for each these antibodies regardless of the stage of gestation or whether the anlagen were from normal BALB/c or lap mice. Thus, positive continuous reactions were observed around the exterior region of the lens anlage from day 10 of gestation for type IV collagen, fibronectin, laminin, heparan sulfate proteoglycan antibodies, and at least from day 11of gestation for entactin antibody. The basement membrane lamina densa of both normal and lap mice was shown by electron microscopy to be discontinuous at days 10 and 10.5 of gestation. However, by day 11 the lamina densa was continuous in the lens anlagen of normal mice but still discontinuous in the lap mice. By day 12 of gestation, the lamina densa had thickened markedly in normal mice, whereas in lap mice it remained discontinuous and its thinness indicated hypoplasia. These results indicate that, while all basement components examined are produced and deposited in the normal region of the lens anlage in the lap mouse, the basement membrane is, for some reason, imperfectly formed. The time at which hypoplasia of the basement membrane was observed

  8. Application of lap laser welding technology on stainless steel railway vehicles

    Science.gov (United States)

    Wang, Hongxiao; Wang, Chunsheng; He, Guangzhong; Li, Wei; Liu, Liguo

    2016-10-01

    Stainless steel railway vehicles with so many advantages, such as lightweight, antirust, low cost of maintenance and simple manufacturing process, so the production of high level stainless steel railway vehicles has become the development strategy of European, American and other developed nations. The current stainless steel railway vehicles body and structure are usually assembled by resistance spot welding process. The weak points of this process are the poor surface quality and bad airtight due to the pressure of electrodes. In this study, the partial penetration lap laser welding process was investigated to resolve the problems, by controlling the laser to stop at the second plate in the appropriate penetration. The lap laser welding joint of stainless steel railway vehicle car body with partial penetration has higher strength and surface quality than those of resistance spot welding joint. The biggest problem of lap laser welding technology is to find the balance of the strength and surface quality with different penetrations. The mechanism of overlap laser welding of stainless steel, mechanical tests, microstructure analysis, the optimization of welding parameters, analysis of fatigue performance, the design of laser welding stainless steel railway vehicles structure and the development of non-destructive testing technology were systematically studied before lap laser welding process to be applied in manufacture of railway vehicles. The results of the experiments and study show that high-quality surface state and higher fatigue strength can be achieved by the partial penetration overlap laser welding of the side panel structure, and the structure strength of the car body can be higher than the requirements of En12663, the standard of structural requirements of railway vehicles bodies. Our company has produced the stainless steel subway and high way railway vehicles by using overlap laser welding technology. The application of lap laser welding will be a big

  9. Increased variability of lap speeds: differentiating medalists and nonmedalists in middle-distance running and swimming events.

    Science.gov (United States)

    Mytton, Graham J; Archer, David T; Turner, Louise; Skorski, Sabrina; Renfree, Andrew; Thompson, Kevin G; St Clair Gibson, Alan

    2015-04-01

    Previous literature has presented pacing data of groups of competition finalists. The aim of this study was to analyze the pacing patterns displayed by medalists and nonmedalists in international competitive 400-m swimming and 1500-m running finals. Split times were collected from 48 swimming finalists (four 100-m laps) and 60 running finalists (4 laps) in international competitions from 2004 to 2012. Using a cross-sectional design, lap speeds were normalized to whole-race speed and compared to identify variations of pace between groups of medalists and nonmedalists. Lap-speed variations relative to the gold medalist were compared for the whole field. In 400-m swimming the medalist group demonstrated greater variation in speed than the nonmedalist group, being relatively faster in the final lap (P .001; moderate effect). There were also greater variations of pace in the 1500-m running medalist group than in the nonmedalist group, with a relatively faster final lap (P = .03; moderate effect) and slower second lap (P = .01; small effect). Swimming gold medalists were relatively faster than all other finalists in lap 4 (P = .04), and running gold medalists were relatively faster than the 5th- to 12th-placed athletes in the final lap (P = .02). Athletes who win medals in 1500-m running and 400-m swimming competitions show different pacing patterns than nonmedalists. End-spurt-speed increases are greater with medalists, who demonstrate a slower relative speed in the early part of races but a faster speed during the final part of races than nonmedalists.

  10. LapRLSR for NIR spectral modeling and its application to online monitoring of the column separation of Salvianolate

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A novel near infrared (NIR) modeling method-Laplacian regularized least squares regression (LapRLSR) was presented,which can take the advantage of many unlabeled spectra to promote the prediction performance of the model even if there are only few calibration samples. Using LapRLSR modeling, NIR spectral analysis was applied to the online monitoring of the concentration of salvia acid B in the column separation of Salvianolate. The results demonstrated that LapRLSR outperformed partial least squares (PLS) significantly, and NIR online analysis was applicable.(C) 2007 Guo An Luo. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

  11. Indagine preliminare sull'applicazione del metodo ermeneutico - fenomenologico alla process research

    Directory of Open Access Journals (Sweden)

    N. Allegri

    2012-09-01

    Full Text Available Secondo Di Nuovo (2007, affinché la psicoterapia possa definirsi sperimentalmente convalidabile occorre che si avvalga, per la verifica delle proprie ipotesi, della triplice procedura adottata dalle scienze naturali, che ottenga cioè una convalida logica, una convalida pragmatica e una convalida esplicativa. La convalida logica pertiene alla coerenza tra teoria psicopatologica, obiettivi terapeutici e tecniche di intervento, e ha lo scopo di acquisire una concordanza tra le nuove conoscenze e il corpus teorico che né è matrice. La convalida pragmatica concorre alla verifica degli effetti: una strategia d’intervento è valutata secondo criteri di efficacia e di utilità. Questo approccio è definito in letteratura “outcome research” in quanto fondato sulla valutazione del risultato per mezzo di confronti pre e post-terapia ed eventuali follow up (Migone, 1996. La convalida esplicativa pertiene invece all’ambito della “process research” che considera il processo terapeutico nel suo incedere: è l’evolversi del cambiamento del paziente a essere posto a tema dell’indagine attraverso momenti di assessment periodici (Di Nuovo, 2007; Migone, 1996. Questo tipo di approccio è finalizzato a fornire il senso di ciò che accade in terapia definendo, al di là dell’esito, perché il trattamento funziona o meno. Il “cambiamento” può essere valutato secondo modalità essenzialmente quantitative, qualitative o attraverso una procedura mista. La valutazione quantitativa, sostanziando l’effetto esperienziale della terapia in misurazioni psicometriche, prescinde però perlopiù dal «Chi» del paziente (e del terapeuta; coglie il “quanto” ma non il “come” del processo terapeutico (Liccione, 2011; Liccione, 2012; Allegri et al., 2011; Petesi et al., 2011. L’alternativa qualitativa, invece, attraverso metodologie come l’analisi del discorso e l’analisi narrativa intende cogliere il senso del processo clinico, con specifico

  12. Wnt4 and LAP2alpha as pacemakers of thymic epithelial senescence.

    Directory of Open Access Journals (Sweden)

    Krisztian Kvell

    Full Text Available Age-associated thymic involution has considerable physiological impact by inhibiting de novo T-cell selection. This impaired T-cell production leads to weakened immune responses. Yet the molecular mechanisms of thymic stromal adipose involution are not clear. Age-related alterations also occur in the murine thymus providing an excellent model system. In the present work structural and molecular changes of the murine thymic stroma were investigated during aging. We show that thymic epithelial senescence correlates with significant destruction of epithelial network followed by adipose involution. We also show in purified thymic epithelial cells the age-related down-regulation of Wnt4 (and subsequently FoxN1, and the prominent increase in LAP2alpha expression. These senescence-related changes of gene expression are strikingly similar to those observed during mesenchymal to pre-adipocyte differentiation of fibroblast cells suggesting similar molecular background in epithelial cells. For molecular level proof-of-principle stable LAP2alpha and Wnt4-over-expressing thymic epithelial cell lines were established. LAP2alpha over-expression provoked a surge of PPARgamma expression, a transcription factor expressed in pre-adipocytes. In contrast, additional Wnt4 decreased the mRNA level of ADRP, a target gene of PPARgamma. Murine embryonic thymic lobes have also been transfected with LAP2alpha- or Wnt4-encoding lentiviral vectors. As expected LAP2alpha over-expression increased, while additional Wnt4 secretion suppressed PPARgamma expression. Based on these pioneer experiments we propose that decreased Wnt activity and increased LAP2alpha expression provide the molecular basis during thymic senescence. We suggest that these molecular changes trigger thymic epithelial senescence accompanied by adipose involution. This process may either occur directly where epithelium can trans-differentiate into pre-adipocytes; or indirectly where first epithelial to

  13. Kultuurrahvaks olemise kultuur Nava lava, Tuhalaane ja Sudiste külapäevade valguses / Peeter Järvelaid

    Index Scriptorium Estoniae

    Järvelaid, Peeter, 1957-

    2010-01-01

    Eestlaste kultuurrahvaks olemisest. Kultuuri edendamine Viljandimaal on heal järjel: Jaak Kõdari loodud mulgi kultuuri festivalist ja tema näitemängust "Rauksi talu lugu", Tuhalaane kultuuriloost, Sudiste külapäevadest

  14. Grinding and polishing technology by computer controlled active lap for Φ1250mmF/1.5 aspheric mirror

    Science.gov (United States)

    Fan, Bin; Zeng, Zhige; Li, Xiaojin; Chen, Qiang; Gao, Pingqi; Zhou, Jiabin; Wan, Yongjian

    2010-05-01

    For large aspheric optical elements, Computer Controlled Active Lap(CCAL) manufacturing which developed in IOE (Institute of Optics and Electronics, Chinese Academy of Science), have some advantages such as higher manufacturing efficiency, lower middle-frequency and high-frequency errors comparing the fixed lapping technology and CCOS(Computer Controlled Optical Surface) technology. A paraboloid surface of Φ1250mmF/1.5 was grinded by the active lap bonded with ceramic pills, as well as polished will pitch bonded active lap. During polishing processing a null lens was designed to test the paraboloid surface, the final testing data of RMS with ZYGO interferometer reached to 0.027λ(λ=0.6328μm).

  15. [Promotion of healthy life style and growth in primary school children (OKkio alla SALUTE)].

    Science.gov (United States)

    Spinelli, A; Baglio, G; Cattaneo, C; Fontana, G; Lamberti, A

    2008-01-01

    In October 2007, the Italian Ministry of Health, the Centre for Disease Control and the Regions entrusted the National Institute of Health with the coordination of the initiative "Okkio alla Salute"--Promotion of healthy lifestyle and growth in primary school children. This programme is linked to the European programme "Gaining health" and the National Plan for Prevention. The objective of the project was to develop and maintain a monitoring system for both the health services and the schools that could also be used to better target public health interventions. The first national survey to estimate the prevalence of overweight and obesity in children and to collect information on diet and physical activity has been conducted in close collaboration with the individual regions. In the first nine months of the project, 1025 health workers and approximately 1500 school teachers have received training, and, using standardised methods, they have collected data and weighed and measured nearly 45000 third grade students (median age 8.8 years) in 2000 schools throughout the country. Participation rates have exceeded 95%. The results obtained to date indicate that the methodology is sustainable using existing health and educational resources and can be adopted as a national surveillance system.

  16. STUDIO DI UN MOVIMENTO SISMOCO DEL BASSO TIRRENO,ORIGINANTE ALLA PROFONDITA' DI 265 KM.

    Directory of Open Access Journals (Sweden)

    ANTONINO GIRLANDA

    1956-06-01

    Full Text Available Gli studi microsismici condotti sul terremoto delle
    isole Lipari del 13 aprile 1938, sebbene siano concordi nell'attribuire
    all'ipocentro una profondità di circa 300 km, valore eccezionale e fino
    allora insospettato nella zona del Mediterraneo centro-occidentale (1,
    hanno condotto a risultati discordanti in relazione alla velocità di
    propagazione delle onde sismiche in corrispondenza del basso Tirreno.
    Le determinazioni delle coordinate spazio-temporali, eseguite dai vari
    Centri sismologici e da diversi autori, conducono a risultati assai discordanti.
    Le determinazioni del B.C.I.S., della J.S.A., di Pasadena,
    e, in modo particolare, una seconda determinazione di Demetrescu,
    condotta sui dati di 45 stazioni, portano a conclusioni che contrastano
    nettamente con i dati forniti dalle stazioni più vicine all'epicentro.
    Secondo gli ultimi risultati di Demetrescu, tali stazioni avrebbero
    registrato l'onda P con un anticipo eccezionale, anticipo che risulterebbe
    di 12s per Trenta e Pompei, di l l s per Taranto e Bari, di 9S per
    Napoli.

  17. Ground based experiments on the growth and characterization of L-Arginine Phosphate (LAP) crystals

    Science.gov (United States)

    Rao, S. M.; Cao, C.; Batra, A. K.; Lal, R. B.; Mookherji, T. K.

    1991-01-01

    L-Arginine Phosphate (LAP) is a new nonlinear optical material with higher efficiency for harmonic generation compared to KDP. Crystals of LAP were grown in the laboratory from supersaturated solutions by temperature lowering technique. Investigations revealed the presence of large dislocation densities inside the crystals which are observed to produce refractive index changes causing damage at high laser powers. This is a result of the convection during crystal growth from supersaturated solutions. It is proposed to grow these crystals in a diffusion controlled growth condition under microgravity environment and compare the crystals grown in space with those grown on ground. Physical properties of the solutions needed for modelling of crystal growth are also presented.

  18. Three-dimensional Material and Geometrical Nonlinear Analysis of Adhesively Bonded Single Lap Joint

    Directory of Open Access Journals (Sweden)

    S. Narasimhan

    2003-04-01

    Full Text Available The paper presents 3-D viscoplastic analysis of adhesively bonded single lap joint considering material and geometric nonlinearity. Total Lagrangian formulation is used to develop a 3-D finite element for geometric nonlinear analysis. The overall geometry of the single lap joint, the loading, and the boundary conditions has been considered, both according to the ASTM testing standards and from those adopted in earlier investigations. The constitutive relations for the adhesive are developed using a pressure-dependant (modified von Mises yield function and Ramberg-Osgood idealisation for the experimental stress-strain curve. The adherends and adhesive layers are both modelled using 20-noded solid elements. However, observations have been made, in particular, on peel and shear stresses in the adhesive layer, which provide useful insight into the 3-D nature of the problem.

  19. Friction Melt Bonding: An innovative process for aluminium-steel lap joints

    Directory of Open Access Journals (Sweden)

    Simar Aude

    2013-11-01

    Full Text Available A new process based on Friction Stir Welding has been developed to weld dissimilar metals, particularly steel and aluminum, in a lap-joint configuration. In this Friction Melt Bonding process, frictional heat generated by the rotating and translating tool brings about local and transient melting (Figure 1. Welding then occurs owing to controlled reactivity and solidification at the interface between the two plates. With an adequate choice of the welding parameters, low alloy steel and aluminium alloys have been successfully welded. Characterisation of the microstructure was systematically performed to highlight the influence of the process parameters, particularly the temperature cycle, on the steel-Al interface. The thickness of the intermetallic layer varies from a couple of micrometers to tens of micrometers depending on the advancing speed of the tool (Fig. 2. The lap shear properties of the joints were also investigated and analysed based on the morphology of the intermetallic layer.

  20. Fatigue Damage Monitoring of a Composite Step Lap Joint Using Distributed Optical Fibre Sensors

    Directory of Open Access Journals (Sweden)

    Leslie Wong

    2016-05-01

    Full Text Available Over the past few decades, there has been a considerable interest in the use of distributed optical fibre sensors (DOFS for structural health monitoring of composite structures. In aerospace-related work, health monitoring of the adhesive joints of composites has become more significant, as they can suffer from cracking and delamination, which can have a significant impact on the integrity of the joint. In this paper, a swept-wavelength interferometry (SWI based DOFS technique is used to monitor the fatigue in a flush step lap joint composite structure. The presented results will show the potential application of distributed optical fibre sensor for damage detection, as well as monitoring the fatigue crack growth along the bondline of a step lap joint composite structure. The results confirmed that a distributed optical fibre sensor is able to enhance the detection of localised damage in a structure.

  1. A Single-Lap Joint Adhesive Bonding Optimization Method Using Gradient and Genetic Algorithms

    Science.gov (United States)

    Smeltzer, Stanley S., III; Finckenor, Jeffrey L.

    1999-01-01

    A natural process for any engineer, scientist, educator, etc. is to seek the most efficient method for accomplishing a given task. In the case of structural design, an area that has a significant impact on the structural efficiency is joint design. Unless the structure is machined from a solid block of material, the individual components which compose the overall structure must be joined together. The method for joining a structure varies depending on the applied loads, material, assembly and disassembly requirements, service life, environment, etc. Using both metallic and fiber reinforced plastic materials limits the user to two methods or a combination of these methods for joining the components into one structure. The first is mechanical fastening and the second is adhesive bonding. Mechanical fastening is by far the most popular joining technique; however, in terms of structural efficiency, adhesive bonding provides a superior joint since the load is distributed uniformly across the joint. The purpose of this paper is to develop a method for optimizing single-lap joint adhesive bonded structures using both gradient and genetic algorithms and comparing the solution process for each method. The goal of the single-lap joint optimization is to find the most efficient structure that meets the imposed requirements while still remaining as lightweight, economical, and reliable as possible. For the single-lap joint, an optimum joint is determined by minimizing the weight of the overall joint based on constraints from adhesive strengths as well as empirically derived rules. The analytical solution of the sin-le-lap joint is determined using the classical Goland-Reissner technique for case 2 type adhesive joints. Joint weight minimization is achieved using a commercially available routine, Design Optimization Tool (DOT), for the gradient solution while an author developed method is used for the genetic algorithm solution. Results illustrate the critical design variables

  2. Seismic fragility analysis of lap-spliced reinforced concrete columns retrofitted by SMA wire jackets

    Science.gov (United States)

    Choi, Eunsoo; Park, Sun-Hee; Chung, Young-Soo; Kim, Hee Sun

    2013-08-01

    The aim of this study is to provide seismic fragility curves of reinforced concrete columns retrofitted by shape memory alloy wire jackets and thus assess the seismic performance of the columns against earthquakes, comparing them with reinforced concrete columns with lap-spliced and continuous reinforcement. For that purpose, this study first developed analytical models of the experimental results of the three types of columns, (1) lap-spliced reinforcement, (2) continuous reinforcement and (3) lap-spliced reinforcement and retrofitted by SMA wire jackets, using the OpenSEES program, which is oriented to nonlinear dynamic analysis. Then, a suite of ten recorded ground motions was used to conduct dynamic analyses of the analytical models with scaling of the peak ground acceleration from 0.1g to 1.0g in steps of 0.1g. From the static experimental tests, the column retrofitted with SMA wire jackets had a larger displacement ductility by a factor of 2.3 times that of the lap-spliced column, which was 6% larger compared with the ductility of the continuous reinforcement column. From the fragility analyses, the SMA wire jacketed column had median values of 0.162g and 0.567g for yield and collapse, respectively. For the yield damage state, the SMA wire jacketed column had a median value similar to the continuous reinforcement column. However, for the complete damage state, the SMA wire jacketed column showed a 1.33 times larger median value than the continuously reinforcement column.

  3. ANALYSIS ON LAPPING AND POLISHING PRESSURE DISTRIBUTION OF HARD MAGNETIC DISK SUBSTRATE

    Institute of Scientific and Technical Information of China (English)

    1998-01-01

    The contact model of lapping and polishing for magnetic disk substrate is presented. Based on elastic contact theory, pressure distribution for this model are analyzed. Further, the effects of various parameters, such as the material properties of the PVA(polyvinyl acetate),grinding stone, the polishing pad and the base plate, the thickness of the pad or the stone on the pressure distribution have been discussed.

  4. A study of sandwich T-joints and composite lap joints

    Science.gov (United States)

    Turaga, Umamaheswar V. R. S.

    In this study, new efficient designs for adhesive sandwich T-joint and single-lap joint were proposed and investigated. In the proposed new sandwich T-joint, called U-channel joint, the load transfer path at the web-flange interface was modified to include a U-shaped aluminum channel which provides strong path for load transfer. Experimental results show that the new design has 62% more strength than the conventional circular fillet joint. The new U-channel joint was tested in tension, compression and bending to investigate its characteristics. It is found to have good performance in bending also, even though in compression it performs same as the circular fillet joint. An extensive parametric study was carried out to investigate the effect of parameters like flange skin stiffener, foam density, foam thickness in the web, and aluminum attachments. A fracture mechanics criterion based on the strain energy release rate was used to explain the failure modes, apart from the stress analysis explanation. The failure loads of the joints in compression were predicted using a maximum principal stress failure criterion based on the sandwich beam theory. A new single lap joint with attachments was proposed in the second phase of the research. The design was verified using both aluminum and composite materials. The new design was found to have 59% more strength than the single-lap joint. A parametric study was performed to find out the influence of the angle of attachment, thickness of attachment and the length of attachment. By careful consideration of design parameters, the joint can be optimized. Finally, the failure loads of the single lap joints with and without attachments were predicted using different failure criteria.

  5. An Analytical Model for Predicting the Stress Distributions within Single-Lap Adhesively Bonded Beams

    Directory of Open Access Journals (Sweden)

    Xiaocong He

    2014-01-01

    Full Text Available An analytical model for predicting the stress distributions within single-lap adhesively bonded beams under tension is presented in this paper. By combining the governing equations of each adherend with the joint kinematics, the overall system of governing equations can be obtained. Both the adherends and the adhesive are assumed to be under plane strain condition. With suitable boundary conditions, the stress distribution of the adhesive in the longitudinal direction is determined.

  6. LAP Based on Bluetooth%基于Bluetooth的局域网接入规范

    Institute of Scientific and Technical Information of China (English)

    彭硕; 黄鹰

    2003-01-01

    Bluetooth是一项全球统一的短距离无线通信标准,具有广阔的应用前景.首先介绍了其中的规范之一--LAP,然后就他与Bluetooth的其他规范和应用模型之间的关系进行论述,最后描述其协议和实体以及用户界面.

  7. Effect of Welding Speed on Joint Features and Lap Shear Properties of Stationary Shoulder FSLWed Alclad 2024 Al Alloy

    Science.gov (United States)

    Xu, Zhiwu; Li, Zhengwei; Lv, Zan; Zhang, Liguo

    2017-03-01

    Using alclad 2024-T4 aluminum alloy as the research object, stationary shoulder technology was used in friction stir lap welding process to investigate its performance in this study. Joint features and mechanical properties of the lap joints were mainly investigated. Results show that lap joint with smooth surface, without shoulder marks and inner defects can be obtained using the stationary shoulder technology. With increasing the welding speed from 40 to 130 mm/min, effective sheet thickness (EST) at the advancing side (AS) shows rather stable values (from 1.17 to 1.31 mm), EST at the retreating side (RS) increases from 0.57 to 1.13 mm, and stir zone width decreases from 4.95 to 4.44 mm. Lap shear failure load of the SSFSLW joints firstly increases and then decreases with increasing the welding speed. Using 100 mm/min, the maximum failure loads of 15.85 and 9.01 kN were obtained when the RS and AS of the joint bear the main load during the lap shear test. Shear fracture mode and tensile fracture mode can be obtained during the lap shear test. All joints present ductile fracture mode.

  8. Effect of Welding Speed on Joint Features and Lap Shear Properties of Stationary Shoulder FSLWed Alclad 2024 Al Alloy

    Science.gov (United States)

    Xu, Zhiwu; Li, Zhengwei; Lv, Zan; Zhang, Liguo

    2017-02-01

    Using alclad 2024-T4 aluminum alloy as the research object, stationary shoulder technology was used in friction stir lap welding process to investigate its performance in this study. Joint features and mechanical properties of the lap joints were mainly investigated. Results show that lap joint with smooth surface, without shoulder marks and inner defects can be obtained using the stationary shoulder technology. With increasing the welding speed from 40 to 130 mm/min, effective sheet thickness (EST) at the advancing side (AS) shows rather stable values (from 1.17 to 1.31 mm), EST at the retreating side (RS) increases from 0.57 to 1.13 mm, and stir zone width decreases from 4.95 to 4.44 mm. Lap shear failure load of the SSFSLW joints firstly increases and then decreases with increasing the welding speed. Using 100 mm/min, the maximum failure loads of 15.85 and 9.01 kN were obtained when the RS and AS of the joint bear the main load during the lap shear test. Shear fracture mode and tensile fracture mode can be obtained during the lap shear test. All joints present ductile fracture mode.

  9. Behavior Of A Confined Tension Lap Splice In High-Strength Reinforced Concrete Beams

    Science.gov (United States)

    Abdel-Kareem, Ahmed H.; Abousafa, Hala; El-Hadidi, Omaia S.

    2015-09-01

    The results of an experimental program conducted on seventeen simply supported concrete beams to study the effect of transverse reinforcement on the behavior of the lap splice of a steel reinforcement in tension zones in high-strength concrete beams are presented. The parameters included in the experimental program were the concrete compressive strength, the lap splice length, the amount of transverse reinforcement provided within the splice region, and the shape of the transverse reinforcement around the spliced bars. The experimental results showed that the displacement ductility increased and the mode of failure changed from a splitting bond failure to a flexural failure when the amount of the transverse reinforcement in the splice region increased, and the compressive strength increased up to 100 MPa. The presence of the transverse reinforcement around the spliced bars had a pronounced effect on increasing the ultimate load, the ultimate deflection, and the displacement ductility. The prediction of maximum steel stresses for spliced bars using the ACI 318-05 building code was compared with the experimental results. The comparison showed that the effect of the transverse reinforcement around spliced bars has to be considered into the design equations for lap splice length in high-strength concrete beams.

  10. Monitoring and phenomena observation during YAG laser lap welding of Zn-coated steel sheets

    Institute of Scientific and Technical Information of China (English)

    Seiji Katayama; Masami Mizutani; Taishi Tarui; Kiyokazu Mori

    2004-01-01

    A study was performed with the objectives of understanding lap welding phenomena of Zn-coated steels with a Nd:YAG laser as well as obtaining a fundamental knowledge of monitoring signals for the formation judgment of sound or bad weld beads.The behavior of a molten pool and a reflected beam was simultaneously observed through a high-speed video together with the monitoring of reflected beam intensity.The effect of a gap between sheets on porosity formation and bead appearances was confirmed,and characteristic monitoring signals were obtained according to the gaps.In the case of no gap,spatters were frequently generated,and a reflected beam was fluctuated intensively at low frequencies.On the other hand,in welding sheets with a wide gap,lap welds were not produced and the high frequency signals of a reflected beam were detected.Moreover,sound welds were produced in the sheets with a proper gap,and a moderate reflected beam was monitored.From these results,it was found that monitoring of a reflected beam was beneficial to the judgment of sound,under-filled or incomplete lap welds.

  11. Probabilistic seismic performance assessment of lap-spliced RC columns retrofitted by steel wrapping jackets

    Science.gov (United States)

    Choi, Eunsoo; Youn, Heejung; Cho, Baik-Soon

    2016-06-01

    In this study, the seismic fragility curves of two reinforced concrete (RC) columns that were lap-spliced at the bottom and retrofitted with steel wrapping jackets were generated. Their seismic performance was probabilistically assessed in comparison to that of lap-spliced or continuous reinforcement RC columns. This study used two types of steel wrapping jackets, a full jacket and a split jacket. Analytical models of the four types of columns were developed based on the experimental results of the columns using OpenSEES, which is effective in conducting nonlinear time history analyses. A suite of ten artificial ground motions, modified from recorded ground motions, was used to perform nonlinear time history analyses of the analytical models with scaling of the peak ground acceleration from 0.1 g to 1.0 g in increments of 0.1 g. The steel wrapping jackets did not increase the medians for yield (slight damage state) of the lap-spiced column and did not exceed the corresponding median of the continuous reinforcement column. However, the two steel jackets increased the medians for failure by 1.872 and 2.017 times, respectively, and exceeded the corresponding median of the continuous reinforcement column by 11.8% and 20.5%, respectively.

  12. The overexpression of nuclear envelope protein Lap2β induces endoplasmic reticulum reorganisation via membrane stacking

    Directory of Open Access Journals (Sweden)

    Ekaterina G. Volkova

    2012-06-01

    Some nuclear envelope proteins are localised to both the nuclear envelope and the endoplasmic reticulum; therefore, it seems plausible that even small amounts of these proteins can influence the organisation of the endoplasmic reticulum. A simple method to study the possible effects of nuclear envelope proteins on endoplasmic reticulum organisation is to analyze nuclear envelope protein overexpression. Here, we demonstrate that Lap2β overexpression can induce the formation of cytoplasmic vesicular structures derived from endoplasmic reticulum membranes. Correlative light and electron microscopy demonstrated that these vesicular structures were composed of a series of closely apposed membranes that were frequently arranged in a circular fashion. Although stacked endoplasmic reticulum cisternae were highly ordered, Lap2β could readily diffuse into and out of these structures into the surrounding reticulum. It appears that low-affinity interactions between cytoplasmic domains of Lap2β can reorganise reticular endoplasmic reticulum into stacked cisternae. Although the effect of one protein may be insignificant at low concentrations, the cumulative effect of many non-specialised proteins may be significant.

  13. Enhancing pulsed eddy current for inspection of P-3 Orion lap-joint structures

    Science.gov (United States)

    Butt, D. M.; Underhill, P. R.; Krause, T. W.

    2016-02-01

    During flight, aircraft are subjected to cyclic loading. In the Lockheed P-3 Orion airframe, this cyclic loading can lead to development of fatigue cracks at steel fastener locations in the top and second layers of aluminum wing skin lap-joints. An inspection method that is capable of detecting these cracks, without fastener removal, is desirable as this can minimize aircraft downtime, while subsequently reducing the risk of collateral damage. The ability to detect second layer cracks has been demonstrated using a Pulsed Eddy Current (PEC) probe design that utilizes the ferrous fastener as a flux conduit. This allows for deeper penetration of flux into the lap-joint second layer and consequently, sensitivity to the presence of cracks. Differential pick-up coil pairs are used to sense the eddy current response due to the presence of a crack. The differential signal obtained from pick-up coils on opposing sides of the fastener is analyzed using a Modified Principal Components Analysis (MPCA). This is followed by a cluster analysis of the resulting MPCA scores to separate fastener locations with cracks from those without. Probe design features, data acquisition system parameters and signal post-processing can each have a strong impact on crack detection. Physical probe configurations and signal analysis processes, used to enhance the PEC system for detection of cracks in P-3 Orion lap-joint structures, are investigated and an enhanced probe design is identified.

  14. Video compression using lapped transforms for motion estimation/compensation and coding

    Science.gov (United States)

    Young, Robert W.; Kingsbury, Nick G.

    1992-11-01

    Many conventional video coding schemes, such as the CCITT H.261 recommendation, are based on the independent processing of non-overlapping image blocks. An important disadvantage with this approach is that blocking artifacts may be visible in the decoded frames. In this paper, we propose a coding scheme based entirely on the processing of overlapping, windowed data blocks, thus eliminating blocking effects. Motion estimation and compensation are both performed in the frequency domain using a complex lapped transform (CLT), which may be viewed as a complex extension of the lapped orthogonal transform (LOT). The motion compensation algorithm is equivalent to overlapped compensation in the spatial domain, but also allows image interpolation for sub-pel displacements and sophisticated loop filters to be conveniently applied in the frequency domain. For inter- and intra-frame coding, we define the modified fast lapped transform (MFLT). This is a modified form of the LOT, which entirely eliminates blocking artifacts in the reconstructed data. The transform is applied in a hierarchical structure, and performs better than the discrete cosine transform (DCT) for both coding modes. The proposed coder is compared with the H.261 scheme, and is found to have significantly improved performance.

  15. Video compression using lapped transforms for motion estimation compensation and coding

    Science.gov (United States)

    Young, Robert W.; Kingsbury, Nick G.

    1993-07-01

    Many conventional video coding schemes, such as the CCITT H.261 recommendation, are based on the independent processing of nonoverlapping image blocks. An important disadvantage with this approach is that blocking artifacts may be visible in the decoded frames. We propose a coding scheme based entirely on the processing of overlapping, windowed data blocks, thus eliminating blocking effects. Motion estimation and, in part, compensation are performed in the frequency domain using a complex lapped transform (CLT), which can be viewed as a complex extension of the lapped orthogonal transform (LOT). The motion compensation algorithm is equivalent to overlapped compensation in the spatial domain, but also allows image interpolation for subpixel displacements and sophisticated loop filters to be conveniently applied in the frequency domain. For inter- and intraframe coding, we define the modified fast lapped transform (MFLT). This is a modified form of the LOT that entirely eliminates blocking artifacts in the reconstructed data. The transform is applied in a hierarchical structure, and performs better than the discrete cosine transform (DCT) for both coding modes. The proposed coder is compared with the H.261 scheme and is found to have significantly improved performance.

  16. Disputa teologica in un mondo alla rovescia: il dramma su Abramo di Moshè Zacuto

    Directory of Open Access Journals (Sweden)

    Ariel Rathaus

    2011-06-01

    The foundation of the world (Yessod 'Olam is believed to be the first Biblical drama written in Hebrew.  It was composed in the first half of the 17th century by the mystical and rabbinical author Moshe Zacuto, who immigrated to Italy from Amsterdam.  In fact the work is mostly based on rabbinic legends about Abraham and his struggle against idolatry, and includes many theological debates between the patriarch and King Nimrod, the pagan tyrant who condemns him to be burnt for his ideas. This paper deals with the ideological background of the drama and the peculiar and paradoxical atmosphere created by the theological debates.  As asserted by several scholars (Berliner, Schirmann. Levy, Zacuto, who was born in a refugees family of  Marrano origin,  alluded in his play to the persecutions of the Jews by the Inquisition in Spain and Portugal. On the other hand, it seems that the play also alludes to 17th Century materialistic philosophy and hedonism, symbolized by the words of Nimrod and his sages.  At any rate, the struggle between Abraham and Nimrod takes place in a highly absurd ideological frame, in which right and wrong are meaningless concepts and true faith is considered as a sort of moral perversion: a reversed world. The paper underlines this hidden and ironic aspect of the play and discusses it, on the basis of some classic works on Carnival reversion, like Cocchiara's Il mondo alla rovescia  and Bakhtin' s Rabelais and his world.

  17. Il sorriso del conte zio. Manzoni, Sade e l’omaggio alla Vergine

    Directory of Open Access Journals (Sweden)

    Fabio Camilletti

    2016-07-01

    Full Text Available Il saggio esamina la figura della Lucia di Manzoni alla luce del ‘tipo’ letterario della ‘fanciulla perseguitata’, al crocevia fra agiografia, letteratura libertina, romanzo sentimentale, narrativa gotica e letteratura romantica. In particolare si sofferma, anche attraverso un’analisi comparata dei frontespizi de I promessi sposi e dell’edizione del 1791 di Justine, sulle affinità e le divergenze fra la Lucia di Manzoni e l’eroina di Sade, sostenendone la parentela intertestuale e la specularità, nell’essere entrambe risposte (solo apparentemente antitetiche al problema metafisico del male. In questo senso si sottolinea l’influenza, su Manzoni e Sade, del modello mariano, nei decenni in cui si assiste, per reazione al laicismo illuminista e rivoluzionario, a un rinnovato culto per la Vergine, che culminerà con il dogma dell’Immacolata Concezione (1854 e le apparizioni di Lourdes (1858.   The essay examines the figure of Manzoni’s Lucia in the light of the literary ‘type’ of the ‘persecuted maiden’, at the intersection between hagiography, libertine literature, sentimental novel, Gothic narrative, and Romantic literature. In particular, through a comparative analysis of the frontispieces of I promessi sposi and of the 1791 edition of Justine, it focuses on the similarities and differences between Manzoni’s Lucia and Sade’s eponymous heroine, arguing for an intertextual relationship between the two and suggesting their reciprocal specularity, in being both answers (only apparently antithetical to the metaphysical problem of evil. From this angle, the essay analyzes the influence, on both Manzoni and Sade, of the figure of Mary, in the years witnessing – as a reaction against the secularization promoted by the Enlightenment and the French revolution – to a renewed worship for the Holy Virgin, later culminating in the promulgation of the Immaculate Conception dogma (1854 and the apparitions at Lourdes (1858.

  18. I beni immobili confiscati alla criminalità organizzata in Lombardia

    Directory of Open Access Journals (Sweden)

    Mattia Maestri

    2016-07-01

    Full Text Available L’articolo compie una ricognizione della presenza e della distribuzione geografica dei beni immobili confiscati alla criminalità organizzata in Lombardia. Ne propone un’analisi quantitativa, utilizzando i dati messi a disposizione da ANBSC (Agenzia Nazionale dei Beni Sequestrati e Confiscati e da Libera Lombardia. E integra questa prospettiva con una analisi qualitativa condotta sul campo che permette di evidenziare significativi esempi di best practices nel riutilizzo sociale degli stessi beni. Nell’ambito di questa sezione della ricerca vengono anche considerati alcuni fondamentali indicatori: le caratteristiche strutturali del bene immobile, il suo rapporto con la memoria collettiva, la sua notorietà pubblica e le funzioni e le attività che vi vengono svolte. Ne emerge un modello lombardo del riuso sociale contrassegnato da alcune interessanti criticità. The paper analyzes the presence and the geographical distribution of real estate confiscated assets from organized crime. Using data made available by The National Agency of Confiscated Property and Libera association, it provides a quantitative analysis integrated with a qualitative approach on the field with the purpose to highlight examples of best practices in the social re-use of these confiscated assets. In this qualitative analysis are also taken into account some key indicators: the asset’s structural features, its relationship with memory, its public reputation and the activities made inside it. Finally, it emerges a Lombard model of social reuse marked by some interesting criticalities. Key words: Confiscated property, Lombardy, Social business, Best practices, Memory

  19. A multi-feature integration method for fatigue crack detection and crack length estimation in riveted lap joints using Lamb waves

    Data.gov (United States)

    National Aeronautics and Space Administration — This paper presents an experimental study of damage detection and quantification in riveted lap joints. Embedded lead zirconate titanate piezoelectric (PZT) ceramic...

  20. Joaquín Camaño e il network di un grande collaboratore alla fine del XVIII secolo

    OpenAIRE

    Viviana Silvia PICIULO

    2014-01-01

    Il mio proposito è stato quello di tentare di capire alcuni dei meccanismi scatenati dalla Pragmática Sanción dentro il microcosmo del gesuita J. Camaño. Questo lavoro mi ha permesso di fare emergere lo spazio dei rapporti sociali distribuiti tra l'Europa e l'America Latina di cui erano al centro gli esuli della provincia del Paraguay. Su questa strada ho tentato di far rinascere il funzionamento dei loro « networks relazionali » durante gli anni dell'espulsione fino alla restaurazione avvenu...

  1. Dalla tutela della religione di Stato alla difesa della libertà dei culti: la svolta liberale del codice Zanardelli

    Directory of Open Access Journals (Sweden)

    Loredana Garlati

    2011-03-01

    Full Text Available Testo, corredato delle note, della relazione al IV Convegno della Facoltà di Giurisprudenza dell’Università degli Studi di Milano-Bicocca (9-10 febbraio 2006 su Laicità e stato di diritto, destinato alla pubblicazione negli Atti (a cura di A. Ceretti e L. Garlati per la casa editrice Giuffrè. Ora nel volume collettaneo, a cura di A. Ceretti e L. Garlati, Laicità e Stato di diritto, Addi del IV Convegno di Facoltà (Università di Milano-Bicocca, 9-10 febbraio 2006, ed. Giuffrè, Milano, 2007, p. 73 ss.

  2. Dal pluralismo confessionale alla multireligiosità: il diritto ecclesiastico e le sue fonti nel guado del post-confessionismo

    Directory of Open Access Journals (Sweden)

    Giuseppe Casuscelli

    2011-03-01

    Full Text Available Testo della relazione al Convegno su Multireligiosità e reazione giuridica (Seconda Università degli Studi di Napoli, Santa Maria Capua Vetere, 9-10 marzo 2007, con il corredo delle note essenziali, destinato alla pubblicazione negli Atti.SOMMARIO: 1. Premesse – 2. Pluralismo e multireligiosità: un tema che viene da lontano - 3. La reazione giuridica e i segni premonitori. - 4. Le fonti e i paradossi del diritto ecclesiastico – 5. Il concorso libero delle fonti e il loro camuffamento. - 6. Una “reazione” conforme a Costituzione è possibile? – 7. Il ruolo dei principi.

  3. Handheld multi-channel LAPS device as a transducer platform for possible biological and chemical multi-sensor applications

    Energy Technology Data Exchange (ETDEWEB)

    Wagner, Torsten [Aachen University of Applied Sciences, Juelich Campus, Institute of Nano- and Biotechnologies, Ginsterweg 1, 52428 Juelich (Germany); Institute of Bio- and Nanosystems (IBN-2), Research Centre Juelich GmbH, 52425 Juelich (Germany); Molina, Roberto [Aachen University of Applied Sciences, Juelich Campus, Institute of Nano- and Biotechnologies, Ginsterweg 1, 52428 Juelich (Germany); Yoshinobu, Tatsuo [Tohoku University, Department of Electronic Engineering, 6-6-05 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579 (Japan); Kloock, Joachim P. [Aachen University of Applied Sciences, Juelich Campus, Institute of Nano- and Biotechnologies, Ginsterweg 1, 52428 Juelich (Germany); Institute of Bio- and Nanosystems (IBN-2), Research Centre Juelich GmbH, 52425 Juelich (Germany); Biselli, Manfred; Canzoneri, Michelangelo; Schnitzler, Thomas [Aachen University of Applied Sciences, Juelich Campus, Institute of Nano- and Biotechnologies, Ginsterweg 1, 52428 Juelich (Germany); Schoening, Michael J. [Aachen University of Applied Sciences, Juelich Campus, Institute of Nano- and Biotechnologies, Ginsterweg 1, 52428 Juelich (Germany); Institute of Bio- and Nanosystems (IBN-2), Research Centre Juelich GmbH, 52425 Juelich (Germany)], E-mail: m.j.schoening@fz-juelich.de

    2007-12-01

    The light-addressable potentiometric sensor is a promising technology platform for multi-sensor applications and lab-on-chip devices. However, many prior LAPS developments suffer from their lack in terms of non-portability, insufficient robustness, complicate handling, etc. Hence, portable and robust LAPS-based measurement devices have been investigated by the authors recently. In this work, a 'chip card'-based light-addressable potentiometric sensor system is presented. The utilisation of ordinary 'chip cards' allows an easy handling of different sensor chips for a wide range of possible applications. The integration of the electronic and the mechanical set-up into a single reader unit results in a compact design with the benefits of portability and low required space. In addition, the presented work includes a new multi-frequency measurement procedure, based on an FFT algorithm, which enables the simultaneous real-time measurement of up to 16 sensor spots. The comparison between the former batch-LAPS and the new FFT-based LAPS set-up will be presented. The immobilisation of biological cells (CHO: Chinese hamster ovary) demonstrates the possibility to record their metabolic activity with 16 measurement spots on the same chip. Furthermore, a Cd{sup 2+}-selective chalcogenide-glass layer together with a pH-sensitive Ta{sub 2}O{sub 5} layer validates the use of the LAPS for chemical multi-sensor applications.

  4. Grey Water Reuse for Agricultural Purposes in the Jordan Valley: Household Survey Results in Deir Alla

    Directory of Open Access Journals (Sweden)

    Sharon B. Megdal

    2012-08-01

    Full Text Available Installation of decentralized grey water treatment systems in small rural communities contributes to a more sustainable water supply. In order to gauge community attitudes about collection and use of grey water, a door-to-door survey in the farming community of Deir Alla, Jordan was conducted by Royal Scientific Society interviewers. Outcomes of a detailed survey, designed specifically for this project, offer insights on people’s views on general water and wastewater issues, as well as their motivation, practices and concerns related to using grey water treatment for a portion of their household wastewater and reuse of the treated grey water for irrigation. A total of 47 respondents from different socio-economic background, aged over 18 years, from this community in the Jordan valley took part in the survey. The level of formal education of the respondents was low, and most of households’ incomes were below the poverty line in Jordan. Most of the respondents reported that the quality of water supplied by public network is acceptable, but the quantity is insufficient to meet their demand, with supplies being delivered to the household once a week. Respondents relied on the public water network as a first-most important resource (85.1%, and 57.4% of the respondent relied on private water tankers as a second-most important resource in addition to the public network. However, 6% of the respondents relied only on private water tankers with no access to the public network. Storage tanks are common practice in all the houses in order to store enough water for at least one week. The survey responses provide evidence that rural communities are willing to accept reuse of treated grey water for irrigation. Furthermore, some of people in the studied area are willing to learn more about grey water treatment and reuse in order to operate grey water systems for irrigation purposes. Water scarcity in this rural area of Jordan is the main determinant of

  5. Analysis of an adhesively bonded single lap joint subjected to eccentric loading

    DEFF Research Database (Denmark)

    Anyfantis, Konstantinos; Tsouvalis, N. G.

    2013-01-01

    is benchmarking of computational tools. The test is based on a Single Lap Joint subjected to Eccentric Loading (SLJ-EL). The basic concept that lies behind this configuration is that the applied in-plane tensile load leads the adhesive layer to develop normal stresses, in-plane and out-of-plane shear stresses...... space and a previously developed mixed-mode model is utilized for the adhesive layer, under the framework of Cohesive Zone Modeling (CZM) techniques. The numerical results are in very good agreement with the corresponding experimental measurements, as regards both the linear and non-linear region...

  6. Reliability Analysis for Adhesive Bonded Composite Stepped Lap Joints Loaded in Fatigue

    DEFF Research Database (Denmark)

    Kimiaeifar, Amin; Sørensen, John Dalsgaard; Lund, Erik

    2012-01-01

    strength under fully reversed cyclic loading based on stiffness/strength degradation. The FEA simulations are conducted using the commercial FEA code ANSYS 12.1. A design equation for fatigue failure of wind turbine blades is chosen based on recommendations given in the wind turbine standard IEC 61400...... by the wind turbine standard IEC 61400-1. Finally, an approach for the assessment of the reliability of adhesive bonded composite stepped lap joints loaded in fatigue is presented. The introduced methodology can be applied in the same way to calculate the reliability level of wind turbine blade components...

  7. Some Observations on the Behaviour of Superimposed and Lap Sewn Joints

    Science.gov (United States)

    1975-02-01

    Fig. 1a); Ferrier used this configuration in some of his work. The sideways loading is omitted but part of the restraint due to sewing is present. The...reminder of the joints mentioned in section 3.2 and the lap joints (sectiou 3.3). While the work was in progress, a Monsanto Tensometer E testing...the remaining samples part of the stitching broke and then the webbing failed near one end of the ocitched length. With the shorter stitched lengths it

  8. Mechanisms of the porosity formation during the fiber laser lap welding of aluminium alloy

    Directory of Open Access Journals (Sweden)

    J. Wang

    2015-10-01

    Full Text Available When joining the aluminum alloys, one of the biggest challenges is the formation of porosity, which deteriorates mechanical properties of welds. In this study, the lap welding was conducted on an aluminum alloy 5754 metal sheets with a thickness of 2 mm. The effects of various laser welding parameters on the weld quality were investigated. The porosity content was measured by X-ray inspections. The key is to control the solidification duration of molten pool. When the solidification duration of molten pool is large enough, more bubbles can escape from the molten pool and less remain as porosity.

  9. High Speed Lapping of SiC Ceramic Material with Solid (Fixed) Abrasives

    Institute of Scientific and Technical Information of China (English)

    ZHANG Wei; YANG Xin-hong; SHANG Chun-min; HU Xiao-yong; HU Zhong-hui

    2005-01-01

    An experimental investigation is carried out to machine SiC ceramic material through the method of high speed plane lapping with solid(fixed) abrasives after the critical condition of brittle-ductile transition is theoretically analyzed. The results show that the material removal mechanism and the surface roughness are chiefly related to the granularity of abrasives for brittle materials such as SiC ceramic. It is easily realized to machine SiC ceramic in the ductile mode using W3.5 grit and a high efficiency, low cost and smooth surface with a surface roughness of Ra 2.4nm can be achieved.

  10. Reliability Analysis for Adhesive Bonded Composite Stepped Lap Joints Loaded in Fatigue

    DEFF Research Database (Denmark)

    Kimiaeifar, Amin; Sørensen, John Dalsgaard; Lund, Erik

    2012-01-01

    This paper describes a probabilistic approach to calculate the reliability of adhesive bonded composite stepped lap joints loaded in fatigue using three- dimensional finite element analysis (FEA). A method for progressive damage modelling is used to assess fatigue damage accumulation and residual...... strength under fully reversed cyclic loading based on stiffness/strength degradation. The FEA simulations are conducted using the commercial FEA code ANSYS 12.1. A design equation for fatigue failure of wind turbine blades is chosen based on recommendations given in the wind turbine standard IEC 61400...

  11. Progress in the development of gas-impregnated lapped plastic film insulation

    Energy Technology Data Exchange (ETDEWEB)

    Forsyth, E B; McNerney, A J; Muller, A C; Rigby, S J

    1977-01-01

    A flexible superconducting power transmission cable is under development. The electrical insulation consists of lapped polymeric film tapes impregnated with supercritical helium. Ways of satisfying the many constraints on the material were described. Although the cable is intended for low-temperature operation good electrical and mechanical characteristics are needed at room-temperature. Results are given for both small-sample tests and a model cable fabricated commercially. The results are compared with those obtained by other workers and the design of the next test cable is given.

  12. Interfacial and Mechanical Behavior of AA5456 Filling Friction-Stir-Welded Lap Joints Using Similar and Dissimilar Pins

    Science.gov (United States)

    Behmand, Saleh Alaei; Mirsalehi, Seyyed Ehsan; Omidvar, Hamid; Safarkhanian, Mohammad Ali

    2016-10-01

    In this article, filling friction stir welding (FFSW) of the remaining exit holes of AA5456 alloy friction-stir-welded lap joints was studied. For this purpose, the influences of different rotating speeds, holding times, and pin materials, AA5456 and AA2024, on the metallurgical structure and joint strength were investigated. The observations showed that defect-free lap joints are successfully obtainable by this method using similar and dissimilar consumable pins. The results indicated that the higher rotating speed and holding time adversely affect the weld performance. The best result was achieved for 30 seconds holding time, 500 rpm rotating speed, and AA2024 consumable pin. In this condition, a lap shear strength of 10 pct higher than that of the nonfilled joint, equivalent to about 94 pct of the original defect-free FSW joint, was obtained, whereas the GTAW filled joint showed only approximately 87 pct of the continuous FSW joint strength.

  13. 蓝宝石晶体的双面研磨加工%Dual-lapping process for sapphire crystal

    Institute of Scientific and Technical Information of China (English)

    文东辉; 洪滔; 张克华; 鲁聪达

    2009-01-01

    In order to achieve high efficiency and low damaged layers during a sapphire crystal lapping process,an experimental research on the rougness,lapping uniformity and sub-surface damaged layer were studied in this paper.The sapphire with (0001) orientation was lapped by 280 mesh boron carbide abrasive grits.The effects of lapping time on the material removal rates and surface roughness were investigated,and the processing remainders by the dual-lapping were determined in accordance with the surface states of the sapphire.Then micro-surface uniformity of the sapphire was also presented by using WYKO laser equipment.Finally,a nano-indentation test was carried out to measure the depth of damaged layer according to the hardness or modulus variances.Experimental results show that the sapphire crystal can offer the R,in 0.523 μm,R,<6.0 μm,the depth of heavy damaged layer of 460 nm,and the depth of sub-surface damaged layer no more than 1 μm,after it is lapped by the abrasive with 280 mesh boron carbide grits in 120 min.%为了实现对蓝宝石晶体的高效低损伤研磨加工,对蓝宝石晶体的双面研磨加工表面粗糙度、研磨均匀性和亚表面损伤层的深度进行实验研究.采用280min的双面研磨加工后可以获得Ra为0.523 μm,Rt<6.0 μm的表面;其深度损伤层约为460 nm,亚表面损伤层<1 μm.

  14. Combining FoxP3 and Helios with GARP/LAP markers can identify expanded Treg subsets in cancer patients.

    Science.gov (United States)

    Abd Al Samid, May; Chaudhary, Belal; Khaled, Yazan S; Ammori, Basil J; Elkord, Eyad

    2016-03-22

    Regulatory T cells (Tregs) comprise numerous heterogeneous subsets with distinct phenotypic and functional features. Identifying Treg markers is critical to investigate the role and clinical impact of various Treg subsets in pathological settings, and also for developing more effective immunotherapies. We have recently shown that non-activated FoxP3-Helios+ and activated FoxP3+/-Helios+ CD4+ T cells express GARP/LAP immunosuppressive markers in healthy donors. In this study we report similar observations in the peripheral blood of patients with pancreatic cancer (PC) and liver metastases from colorectal cancer (LICRC). Comparing levels of different Treg subpopulations in cancer patients and controls, we report that in PC patients, and unlike LICRC patients, there was no increase in Treg levels as defined by FoxP3 and Helios. However, defining Tregs based on GARP/LAP expression showed that FoxP3-LAP+ Tregs in non-activated and activated settings, and FoxP3+Helios+GARP+LAP+ activated Tregs were significantly increased in both groups of patients, compared with controls. This work implies that a combination of Treg-specific markers could be used to more accurately determine expanded Treg subsets and to understand their contribution in cancer settings. Additionally, GARP-/+LAP+ CD4+ T cells made IL-10, and not IFN-γ, and levels of IL-10-secreting CD4+ T cells were elevated in LICRC patients, especially with higher tumor staging. Taken together, our results indicate that investigations of Treg levels in different cancers should consider diverse Treg-related markers such as GARP, LAP, Helios, and others and not only FoxP3 as a sole Treg-specific marker.

  15. L-Cysteine and L-AP4 microinjections in the rat caudal ventrolateral medulla decrease arterial blood pressure.

    Science.gov (United States)

    Takemoto, Yumi

    2014-12-01

    The thiol amino acid L-cysteine increases arterial blood pressure (ABP) when injected into the cerebrospinal fluid space in conscious rats, indicating a pressor response to centrally acting L-cysteine. A prior synaptic membrane binding assay suggests that L-cysteine has a strong affinity for the L-2-amino-4-phosphonobutyric acid (L-AP4) binding site. The central action of L-cysteine may be vial-AP4 sensitive receptors. The present study investigated cardiovascular responses to L-cysteine and L-ap4 microinjected into the autonomic area of the caudal ventrolateral medulla (CVLM) where inhibitory neurons regulate ABP via pre-sympathetic vasomotor neurons. Both the injection of L-cysteine and L-AP4 in the CVLM sites identified with L-glutamate produced the same depressor and bradycardic responses in urethane-anesthetized rats. Neither a prior antagonist microinjection of MK801 for the N-methyl-D-aspartate (NMDA) receptor nor CNQX for the non-NMDA receptor attenuated the responses to L-cysteine, but the combination of the two receptor blocking with an additional prior injection abolished the response. In contrast, either receptor blockade alone abolished the response to L-AP4, indicating distinct mechanisms between responses to L-cysteine and L-AP4 in the CVLM. The results indicate that the CVLM is a central active site for L-cysteine's cardiovascular response. Central L-cysteine's action could be independent of the L-AP4 sensitive receptors. Cardiovascular regulation may involve endogenous L-cysteine in the CVLM. Further multidisciplinary examinations are required to elaborate on L-cysteine's functional roles in the CVLM.

  16. Impaired circulating CD4+ LAP+ regulatory T cells in patients with acute coronary syndrome and its mechanistic study.

    Directory of Open Access Journals (Sweden)

    Zheng-Feng Zhu

    Full Text Available OBJECTIVE: CD4(+ latency-associated peptide (LAP(+ regulatory T cells (Tregs are a newly discovered T cell subset in humans and the role of these cells in patients with acute coronary syndrome (ACS has not been explored. We designed to investigate whether circulating frequency and function of CD4(+LAP(+ Tregs are defective in ACS. METHODS: One hundred eleven ACS patients (acute myocardial infarction and unstable angina and 117 control patients were enrolled in the study. The control patients consisted of chronic stable angina (CSA and chest pain syndrome (CPS. The frequencies of circulating CD4(+LAP(+ Tregs and the expression of the transmembrane protein glycoprotein-A repetitions predominant (GARP on CD4(+ T cells were determined by flow cytometry. The function of CD4(+LAP(+ Tregs was detected using thymidine uptake. Serum interleukin-10 (IL-10 and transforming growth factor-β protein (TGF-β levels were detected using ELISA and expression of GARP mRNA in peripheral blood mononuclear cells (PBMCs was measured by real time-polymerase chain reaction. RESULTS: We found ACS patients had a significantly lower frequency of circulating CD4(+LAP(+ Tregs, and the function of these cells was reduced compared to controls. The expression of GARP in CD4(+ T cells and the serum levels of TGF-β in ACS patients were lower than those of control patients. The serum levels of IL-10 were similar between the two cohorts. CONCLUSIONS: A novel regulatory T cell subset, defined as CD4(+LAP(+ T cells is defective in ACS patients.

  17. Adhesives: Test Method, Group Assignment, and Categorization Guide for High-Loading-Rate Applications Preparation and Testing of Single Lap Joints (Ver. 2.2, Unlimited)

    Science.gov (United States)

    2016-04-01

    Remove loose debris from the fabricated aluminum lap joint test panel using a clean and dry cloth or paper towel. Single-lap-joint testing results...technology – vocabulary - part 17: databases. Geneva (Switzerland): International Organization for Standardization/International Electrotechnical

  18. Optimization of geometry of elastic bodies in the vicinity of singular points on the example of an adhesive lap joint

    Science.gov (United States)

    Matveenko, V. P.; Sevodina, N. V.; Fedorov, A. Yu.

    2013-09-01

    The stress state in adhesive lap joints with various geometric shapes of spew fillet is studied. It is noted that the applied design models of the considered problem include singular points at which infinite stress values are possible if one uses the linear elasticity theory to calculate the stress state. Based on the conclusions of the solution of the geometry optimization problem in the vicinity of the singular points of elastic bodies, variants of the geometry of spew fillet, which provide the most significant decrease in the concentration of stresses in adhesive lap joints, are proposed.

  19. (40)Ar/(39)Ar Age of Hornblende-Bearing R Chondrite LAP 04840

    Science.gov (United States)

    Righter, K.; Cosca, M.

    2015-01-01

    Chondrites have a complex chronology due to several variables affecting and operating on chondritic parent bodies such as radiogenic heating, pressure and temperature variation with depth, aqueous alteration, and shock or impact heating. Unbrecciated chondrites can record ages from 4.56 to 4.4 Ga that represent cooling in small parent bodies. Some brecciated chondrites exhibit younger ages (much less than 4 to 4.4 Ga) that may reflect the age of brecciation, disturbance, or shock and impact events (much less than 4 Ga). A unique R chondrite was recently found in the LaPaz Icefield of Antarctica - LAP 04840. This chondrite contains approximately 15% hornblende and trace amounts of biotite, making it the first of its kind. Studies have revealed an equigranular texture, mineral equilibria yielding equilibration near 650-700 C and 250-500 bars, hornblende that is dominantly OH-bearing (very little Cl or F), and high D/H ratios. To help gain a better understanding of the origin of this unique sample, we have measured the (40)Ar/(39)Ar age (LAP 04840 split 39).

  20. Lap Shear and Impact Testing of Ochre and Beeswax in Experimental Middle Stone Age Compound Adhesives.

    Science.gov (United States)

    Kozowyk, P R B; Langejans, G H J; Poulis, J A

    2016-01-01

    The production of compound adhesives using disparate ingredients is seen as some of the best evidence of advanced cognition outside of the use of symbolism. Previous field and laboratory testing of adhesives has shown the complexities involved in creating an effective Middle Stone Age glue using Acacia gum. However, it is currently unclear how efficient different adhesive recipes are, how much specific ingredients influence their performance, and how difficult it may have been for those ingredients to be combined to maximum effect. We conducted a series of laboratory-based lap shear and impact tests, following modern adhesion testing standards, to determine the efficacy of compound adhesives, with particular regard to the ingredient ratios. We tested rosin (colophony) and gum adhesives, containing additives of beeswax and ochre in varying ratios. During both lap shear and impact tests compound rosin adhesives performed better than single component rosin adhesives, and pure acacia gum was the strongest. The large difference in performance between each base adhesive and the significant changes in performance that occur due to relatively small changes in ingredient ratios lend further support to the notion that high levels of skill and knowledge were required to consistently produce the most effective adhesives.

  1. Lap Shear and Impact Testing of Ochre and Beeswax in Experimental Middle Stone Age Compound Adhesives.

    Directory of Open Access Journals (Sweden)

    P R B Kozowyk

    Full Text Available The production of compound adhesives using disparate ingredients is seen as some of the best evidence of advanced cognition outside of the use of symbolism. Previous field and laboratory testing of adhesives has shown the complexities involved in creating an effective Middle Stone Age glue using Acacia gum. However, it is currently unclear how efficient different adhesive recipes are, how much specific ingredients influence their performance, and how difficult it may have been for those ingredients to be combined to maximum effect. We conducted a series of laboratory-based lap shear and impact tests, following modern adhesion testing standards, to determine the efficacy of compound adhesives, with particular regard to the ingredient ratios. We tested rosin (colophony and gum adhesives, containing additives of beeswax and ochre in varying ratios. During both lap shear and impact tests compound rosin adhesives performed better than single component rosin adhesives, and pure acacia gum was the strongest. The large difference in performance between each base adhesive and the significant changes in performance that occur due to relatively small changes in ingredient ratios lend further support to the notion that high levels of skill and knowledge were required to consistently produce the most effective adhesives.

  2. Microstructure and Properties of Lap Joint Between Aluminum Alloy and Galvanized Steel by CMT

    Science.gov (United States)

    Niu, Song; Chen, Su; Dong, Honggang; Zhao, Dongsheng; Zhang, Xiaosheng; Guo, Xin; Wang, Guoqiang

    2016-05-01

    Lap joining of 1-mm-thick Novelist AC 170 PX aluminum alloy to 1.2-mm-thick ST06 Z galvanized steel sheets for automotive applications was conducted by cold metal transfer advanced welding process with ER4043 and ER4047 filler wires. Under the optimized welding parameters with ER4043 filler wire, the tensile shear strength of joint was 189 MPa, reaching 89% of the aluminum alloy base metal. Microstructure and elemental distribution were characterized by optical metalloscope and electron probe microanalysis. The lap joints with ER4043 filler wire had smaller wetting angle and longer bonded line length with better wettability than with ER4047 filler wire during welding with same parameters. The needle-like Al-Fe-Si intermetallic compounds (IMCs) were spalled into the weld and brought negative effect to the tensile strength of joints. With increasing welding current, the needle-like IMCs grew longer and spread further into the weld, which would deteriorate the tensile shear strength.

  3. Multitechnique monitoring of fatigue damage in adhesively bonded composite lap-joints

    Science.gov (United States)

    Karpenko, Oleksii; Koricho, Ermias; Khomenko, Anton; Dib, Gerges; Haq, Mahmoodul; Udpa, Lalita

    2015-03-01

    The requirement for reduced structural weight has driven the development of adhesively bonded joints. However, a major issue preventing their full acceptance is the initiation of premature failure in the form of a disbond between adherends, mainly due to fatigue, manufacturing flaws or impact damage. This work presents the integrated approach for in-situ monitoring of degradation of the adhesive bond in the GFRP composite lap-joint using ultrasonic guided waves and dynamic measurements from strategically embedded FBG sensors. Guided waves are actuated with surface mounted piezoelectric elements and mode tuning is used to provide high sensitivity to the degradation of the adhesive layer parameters. Composite lap-joints are subjected to fatigue loading, and data from piezoceramic transducers are collected at regular intervals to evaluate the progression of damage. Results demonstrate that quasi-static loading affects guided wave measurements considerably, but FBG sensors can be used to monitor the applied load levels and residual strains in the adhesive bond. The proposed technique shows promise for determining the post-damage stiffness of adhesively bonded joints.

  4. The development of laser-plasma interaction program LAP3D on thousands of processors

    Directory of Open Access Journals (Sweden)

    Xiaoyan Hu

    2015-08-01

    Full Text Available Modeling laser-plasma interaction (LPI processes in real-size experiments scale is recognized as a challenging task. For explorering the influence of various instabilities in LPI processes, a three-dimensional laser and plasma code (LAP3D has been developed, which includes filamentation, stimulated Brillouin backscattering (SBS, stimulated Raman backscattering (SRS, non-local heat transport and plasmas flow computation modules. In this program, a second-order upwind scheme is applied to solve the plasma equations which are represented by an Euler fluid model. Operator splitting method is used for solving the equations of the light wave propagation, where the Fast Fourier translation (FFT is applied to compute the diffraction operator and the coordinate translations is used to solve the acoustic wave equation. The coupled terms of the different physics processes are computed by the second-order interpolations algorithm. In order to simulate the LPI processes in massively parallel computers well, several parallel techniques are used, such as the coupled parallel algorithm of FFT and fluid numerical computation, the load balance algorithm, and the data transfer algorithm. Now the phenomena of filamentation, SBS and SRS have been studied in low-density plasma successfully with LAP3D. Scalability of the program is demonstrated with a parallel efficiency above 50% on about ten thousand of processors.

  5. Lap shear strength and healing capability of self-healing adhesive containing epoxy/mercaptan microcapsules

    Energy Technology Data Exchange (ETDEWEB)

    Ghazali, Habibah; Ye, Lin [Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW 2006 (Australia); Zhang, Ming-Qiu [Key Laboratory of Polymeric Composite and Functional Materials of Ministry of Education, Zhongshan University, Guangzhou 510275 (China)

    2016-03-09

    The aim of this work is to develop a self-healing polymeric adhesive formulation with epoxy/mercaptan microcapsules. Epoxy/mercaptan microcapsules were dispersed into a commercialize two-part epoxy adhesive for developing self-healing epoxy adhesive. The influence of different content of microcapsules on the shear strength and healing capability of epoxy adhesive were investigated using single-lap-joints with average thickness of adhesive layer of about 180 µm. This self-healing adhesive was used in bonding of 5000 series aluminum alloys adherents after mechanical and alkaline cleaning surface treatment. The adhesion strength was measured and presented as function of microcapsules loading. The results indicated that the virgin lap shear strength was increased by about 26% with addition of 3 wt% of self-healing microcapsules. 12% to 28% recovery of the shear strength is achieved after self-healing depending on the microcapsules content. Scanning electron microscopy was used to study fracture surface of the joints. The self-healing adhesives exhibit recovery of both cohesion and adhesion properties with room temperature healing.

  6. Lap shear strength and healing capability of self-healing adhesive containing epoxy/mercaptan microcapsules

    Science.gov (United States)

    Ghazali, Habibah; Ye, Lin; Zhang, Ming-Qiu

    2016-03-01

    The aim of this work is to develop a self-healing polymeric adhesive formulation with epoxy/mercaptan microcapsules. Epoxy/mercaptan microcapsules were dispersed into a commercialize two-part epoxy adhesive for developing self-healing epoxy adhesive. The influence of different content of microcapsules on the shear strength and healing capability of epoxy adhesive were investigated using single-lap-joints with average thickness of adhesive layer of about 180 µm. This self-healing adhesive was used in bonding of 5000 series aluminum alloys adherents after mechanical and alkaline cleaning surface treatment. The adhesion strength was measured and presented as function of microcapsules loading. The results indicated that the virgin lap shear strength was increased by about 26% with addition of 3 wt% of self-healing microcapsules. 12% to 28% recovery of the shear strength is achieved after self-healing depending on the microcapsules content. Scanning electron microscopy was used to study fracture surface of the joints. The self-healing adhesives exhibit recovery of both cohesion and adhesion properties with room temperature healing.

  7. Risk from exposure to natural and artificial ultraviolet radiation; Il rischio di esposizione alla radiazione ultravioletta naturale e artificiale

    Energy Technology Data Exchange (ETDEWEB)

    Matzeu, M. [Istituto Superiore di Sanita`, Rome (Italy). Lab. di Fisica

    1998-12-31

    The association between exposure to ultraviolet (UV) and damage to the skin and eyes is today generally accepted. Exposure to UV radiation may occur in several ways. Apart from the sun, there is a wide range of artificial sources used in different fields of industry, research and medicine, the exposure to which adds to the total exposure of an individual during his life-span. The potential effects of ozone layer depletion on the increase of the solar UV radiation at earth`s surface, and therefor on human health, have recently been emphasized. Moreover, great attention has been devoted to the often uncontrolled use of UV lamps for tanning. This report shows the basis on which short and long term UV risk is assessed, and indicates some parameters necessary to its evaluation. The UV effects, both at molecular and cellular levels and on humans, are described together with their respective action spectra. The most common UV sources are then analyzed and their use in different fields is shown. Finally, some methods in dosimetry, which are useful for the correct measurement of exposure values, are described. [Italiano] E` oggi generalmente accettata l`assciazione tra l`esposizione alla radiazione UV e alcuni danni alla pelle e agli occhi (carcinomi e cataratta). Le occasioni di esposizione sono molteplici; oltre al sole, anche una grande varieta` di sorgenti artificiali impiegate per scopi diversi nell`industria, nella ricerca e in medicina danno un contributo, non sempre valutabile, all`esposizione totale di un individuo nell`arco della sua vita. Recentemente e` stato posto l`accento sulle possibili conseguenze della riduzione dello stato di ozono stratosferico sull`aumento della frazione di UV solare al suolo e quindi sulla salute umana; particolare attenzione ha inoltre suscitato l`uso, spesso incontrollato, delle lampade UV per scopi estetici. Sono illustrate le basi sulle quali viene riconosciuto il rischio a breve e a lungo termine e sono definiti i parametri

  8. An Unexpected Duo: Rubredoxin Binds Nine TPR Motifs to Form LapB, an Essential Regulator of Lipopolysaccharide Synthesis.

    Science.gov (United States)

    Prince, Chelsy; Jia, Zongchao

    2015-08-01

    Lipopolysaccharide (LPS) synthesis and export are essential pathways for bacterial growth, proliferation, and virulence. The essential protein LapB from Escherichia coli has recently been identified as a regulator of LPS synthesis. We have determined the crystal structure of LapB (without the N-terminal transmembrane helix) at 2 Å resolution using zinc single-wavelength anomalous diffraction phasing derived from a single bound zinc atom. This structure demonstrates the presence of nine tetratricopeptide repeats (TPR) motifs, including two TPR folds that were not predicted from sequence, and a rubredoxin-type metal binding domain. The rubredoxin domain is bound intimately to the TPR motifs, which has not been previously observed or predicted. Mutations in the rubredoxin/TPR interface inhibit in vivo cell growth, and in vitro studies indicate that these modifications cause local displacement of rubredoxin from its binding site without changing the secondary structure of LapB. LapB is the first reported structure to contain both a rubredoxin domain and TPR motifs.

  9. Experimental validation of a lap-type joint AC loss model with an ITER correction coil conductor joint

    NARCIS (Netherlands)

    Rolando, G.; Hansheng, F.; Hongwei, L.; Lin, W.; Wu, W.; Foussat, A.; Ilin, Y.; Libeyre, P.; Nijhuis, A.

    2014-01-01

    The ITER correction coils (CC) system features shaking hands lap-type joints to interface the terminations of the conductors. The feasibility of operating plasma scenarios depends on the ability of the magnets to retain sufficient temperature and current margins. In this respect, the joints represen

  10. Laparoscopy in the morbidly obese pregnant patient using a modified foley lap-lift technique: case report.

    Science.gov (United States)

    Chohan, Lubna; Ramirez, Mildred M; Martinez, Carla A; Kilpatrick, Charlie C

    2011-01-01

    Obesity in women of reproductive age is increasing. Gynecologic laparoscopy in the morbidly obese pregnant patient presents challenges, and is not often attempted. Herein is reported a successful case using a modified Foley lap-lift technique, which improved visualization and facilitated mechanical ventilation. Copyright © 2011 AAGL. Published by Elsevier Inc. All rights reserved.

  11. Una nuova metodologia di indagine diagnostica finalizzata alla conservazione ambientale dei manufatti e oggetti sottoposti a tutela artistica ed architettonica

    Directory of Open Access Journals (Sweden)

    Giuseppe Cannistraro

    2012-12-01

    Full Text Available La salvaguardia e tutela del patrimonio artistico ed architettonico rappresenta una complessa problematica nella quale convive la doppia esigenza di preservare e al contempo rendere fruibile il bene. La nuova tecnica di screening proposta si configura come  strumento di valutazione del degrado dell'organismo nel suo complesso sia prima che il danno si verifichi sia a danno avvenuto,  rispetto ad una opportuna valutazione delle priorità. Esso è volto alla formalizzazione di uno strumento operativo per schede in grado di convogliare preziose informazioni ad integrazione di un sistema digitale di banche-dati alfanumeriche e cartografiche: il Sistema Informativo Territoriale della Carta del Rischio (SIT CdR. Esso sintetizza i dati relativi a danni e rischi, ne evidenzia le criticità e gestisce la programmazione degli interventi conservativi.

  12. L'evoluzione della fisica sviluppo delle idee dai concetti iniziali alla relatività e ai quanti

    CERN Document Server

    Einstein, Albert

    1965-01-01

    Pubblicato in inglese alla vigilia della Seconda guerra mondiale e subito proposto in traduzione, L’evoluzione della fisica dovette aspettare la fine del conflitto per vedere la sua pubblicazione in Italia. Da allora (1948) questo testo non ha più smesso di rappresentare un punto di riferimento obbligato per il concetto stesso di divulgazione scientifica e per la fisica in particolare. Scritto dai protagonisti assoluti della rivoluzione della fisica relativistica e quantistica, ma destinato a un pubblico di non specialisti, il libro che avete tra le mani è il testo fondativo della moderna divulgazione delle idee, la pietra di paragone di ogni altro libro di fisica, che permette di intuire la straordinaria importanza e il valore rivoluzionario della svolta della fisica del Novecento.

  13. ASSET e SIGOV, due soluzioni per associare il riordino territoriale allo sviluppo e alla governance del territorio

    Directory of Open Access Journals (Sweden)

    Sinergis Dedagroup ICT Network

    2015-06-01

    Full Text Available Una riforma come quella di Delrio, che ridisegna profondamente i processi di governance del territorio, può rischiare di essere interpretata dagli Amministratori Locali dei Comuni, delle Province e delle Regioni, come un mero adempimento normativo.Ma come trasformarla in una concreta opportunità di crescita?Dedagroup ICT Network ha messo a punto, in collaborazione con Forum PA, un metodo e un insieme di soluzioni con cui accompagnare gli Enti nel processo di cambiamento legato alla riforma Delrio per fare di tale evoluzione unarisorsa per guidare lo sviluppo dei territori.

  14. Lipid accumulation product (LAP) as a criterion for the identification of the healthy obesity phenotype in postmenopausal women.

    Science.gov (United States)

    Lwow, Felicja; Jedrzejuk, Diana; Milewicz, Andrzej; Szmigiero, Leszek

    2016-09-01

    Obesity and its complications constitute a major health problem in postmenopausal women. The identification of the obesity phenotype, especially that of metabolically healthy obese (MHO) patients, is a necessary part of obesity treatment protocols. There are several methods to define MHO, but unfortunately, all of them are arbitrary and inconsistent. The aim of this work was to determine whether lipid accumulation product (LAP) could be used as a marker of the MHO phenotype in postmenopausal women. A sample of 345 Polish postmenopausal women aged 50-60years old participated in the study. Participants were classified as obese when their BMI was >27. Receiver operating characteristic curve analysis was performed to estimate the best cutoff for the LAP index value to identify postmenopausal women without metabolic syndrome components. We found that the best cutoff value was LAP ≤29.9, and this value was used to define MHO individuals. With this definition, the identification of MHO individuals could be made when both of the following criteria were met: LAP index ≤29.9 and no arterial hypertension (SBP<130mmHg, DBP<85mmHg). The anthropometric and body fat distribution measurements, as well as the metabolic characteristics of MHO women identified according to the above definition, were compared with those of MHO women identified by two other methods in the literature. These methods and our definition identified similar proportions of MHO women ranging from 11.6% to 16.9%. We found that MHO women identified by all of the definitions used in this study possessed a similar metabolic status, and they did not differ in anthropometric indices or body fat distribution measurements. We concluded that the combination of LAP estimation and arterial blood pressure measurement appear to constitute a useful method for identifying the MHO phenotype in postmenopausal women.

  15. Abrasion and deformed layer formation of manganese-zinc ferrite in sliding contact with lapping tapes

    Science.gov (United States)

    Miyoshi, K.; Buckley, D. H.; Tanaka, K.

    1986-01-01

    Wear experiments were conducted using replication electron microscopy and reflection electron diffraction to study abrasion and the deformed layers produced in single-crystal Mn-Zn ferrite simulated heads during contact with lapping tapes. The crystaline state of the head is changed drastically during the abrasion process. Crystalline states ranging from nearly amorphous to highly textured polycrystalline can be produced on the wear surface of a single-crystal Mn-Zn ferrite head. The total thickness of the deformed layer was approximately 0.8 microns. This thickness increased as the load and abrasive grit size increased. The anisotropic wear of the ferrite was found to be inversely proportional to the hardness of the wear surface. The wear was lower in the order 211 111 10 0110. The wear of the ferrite increased markedly with an increase in sliding velocity and abrasive grit size.

  16. Lamb wave based active damage identification in adhesively bonded composite lap joints

    Science.gov (United States)

    Jolly, Prateek

    Bonding composite structures using adhesives offers several advantages over mechanical fastening such as better flow stress, weight saving, improved fatigue resistance and the ability to join dissimilar structures. The hesitation to adopt adhesively bonded composite joints stems from the lack of knowledge regarding damage initiation and propagation mechanisms within the joint. A means of overcoming this hesitation is to continuously monitor damage in the joint. This study proposes a methodology to conduct structural health monitoring (SHM) of an adhesively bonded composite lap joint using acoustic, guided Lamb waves by detecting, locating and predicting the size of damage. Finite element modeling of a joint in both 2D and 3D is used to test the feasibility of the proposed damage triangulation technique. Experimental validation of the methodology is conducted by detecting the presence, location and size of inflicted damage with the use of tuned guided Lamb waves.

  17. Shear Strength of Single Lap Joint Aluminium-Thermoplastic Natural Rubber (Al-TPNR) Laminated Composite

    Science.gov (United States)

    Muzakkar, M. Z.; Ahmad, S.; Yarmo, M. A.; Jalar, A.; Bijarimi, M.

    2013-04-01

    In this work, we studied the effect of surface treatment on the aluminium surface and a coupling agent to improve adhesion between aluminium with organic polymer. Thermoplastic natural rubber (TPNR) matrix was prepared by melt blending of natural rubber (NR), liquid natural rubber (LNR) compatibilizer, linear low density polyethylene (LLDPE) and polyethylene grafted maleic anhydride (PE-g-MAH). The PEgMAH concentration used was varied from 0% - 25%. In addition, the aluminium surface was pre-treated with 3-glycidoxy propyl trimethoxy silane (3-GPS) to enhance the mechanical properties of laminated composite. It was found that the shear strength of single lap joint Al-TPNR laminated composite showing an increasing trend as a function of PE-g-MAH contents for the 3-GPS surface treated aluminium. Moreover, the scanning electron microscope (SEM) revealed that the strength improvement was associated with the chemical state of the compound involved.

  18. Nano-modified adhesive by graphene: the single lap-joint case

    Energy Technology Data Exchange (ETDEWEB)

    Silva Neto, Almir; Cruz, Diego Thadeu Lopes da; Avila, Antonio Ferreira, E-mail: aavila@netuno.lcc.ufmg.b [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Dept. de Engenharia Mecanica

    2013-11-01

    This paper addresses the performance study on, low viscosity, nano-modified adhesives by graphene. For achieving this goal, single-lap joints following ASTM D 5868-01 were manufactured and tested. X-ray diffraction, scanning electron microscopy and nanoindentation were employed for graphene based nanostructures characterization. The increase on joint strength was around 57% when compared against the control group. Furthermore, all failures for the nano-modified adhesive were cohesive failure for the carbon fibre/epoxy composites indicating that the adhesive was tested. X-ray diffractions signatures indicate formation of nano-structures with 17-19 nm diameters. Moreover, nanoindentation tests revealed a homogeneous dispersion of graphene. (author)

  19. Stress intensity factor and load transfer analysis of a cracked riveted lap joint

    Energy Technology Data Exchange (ETDEWEB)

    Moreira, P.M.G.P. [DEMEGI, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto (Portugal)]. E-mail: pmgpm@fe.up.pt; Matos, P.F.P. de [DEMEGI, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto (Portugal); Camanho, P.P. [DEMEGI, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto (Portugal); Pastrama, Stefan D. [Department of Strength of Materials, University Politehnica of Bucharest, Splaiul Independentei nr. 313, Sector 6, Bucharest (Romania); Castro, P.M.S.T. de [DEMEGI, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto (Portugal)

    2007-07-01

    One of the main problems of aeronautical structures is the onset and growth of defects due to fatigue loading. This phenomenon is accentuated in areas of stress concentration, for example in the connection of components, such as the riveted joints of fuselage panels. Several geometric configurations can be used in riveted joints of fuselage panels. This work is focused on one geometry, a single-lap splice with three rivets rows and one rivet column. A three-dimensional stress analysis using the finite element method was carried out in order to analyze the load transfer as a function of crack geometry and length, and to determine the stress intensity factors for one or two cracks emanating from the edge of the hole located at the critical cross section.

  20. Nano-modified adhesive by graphene: the single lap-loint case

    Directory of Open Access Journals (Sweden)

    Almir Silva Neto

    2013-06-01

    Full Text Available This paper addresses the performance study on, low viscosity, nano-modified adhesives by graphene. For achieving this goal, single-lap joints following ASTM D 5868-01 were manufactured and tested. X-ray diffraction, scanning electron microscopy and nanoindentation were employed for graphene based nanostructures characterization. The increase on joint strength was around 57% when compared against the control group. Furthermore, all failures for the nano-modified adhesive were cohesive failure for the carbon fibre/epoxy composites indicating that the adhesive was tested. X-ray diffractions signatures indicate formation of nano-structures with 17-19 nm diameters. Moreover, nanoindentation tests revealed a homogeneous dispersion of graphene.

  1. Adhesive-bonded double-lap joints. [analytical solutions for static load carrying capacity

    Science.gov (United States)

    Hart-Smith, L. J.

    1973-01-01

    Explicit analytical solutions are derived for the static load carrying capacity of double-lap adhesive-bonded joints. The analyses extend the elastic solution Volkersen and cover adhesive plasticity, adherend stiffness imbalance and thermal mismatch between the adherends. Both elastic-plastic and bi-elastic adhesive representations lead to the explicit result that the influence of the adhesive on the maximum potential bond strength is defined uniquely by the strain energy in shear per unit area of bond. Failures induced by peel stresses at the ends of the joint are examined. This failure mode is particularly important for composite adherends. The explicit solutions are sufficiently simple to be used for design purposes

  2. Stress analysis of the cracked-lap-shear specimen - An ASTM round-robin

    Science.gov (United States)

    Johnson, W. S.

    1987-01-01

    This ASTM Round Robin was conducted to evaluate the state of the art in stress analysis of adhesively bonded joint specimens. Specifically, the participants were asked to calculate the strain-energy-release rate for two different geometry cracked lap shear (CLS) specimens at four different debond lengths. The various analytical techniques consisted of 2- and 3-dimensional finite element analysis, beam theory, plate theory, and a combination of beam theory and finite element analysis. The results were examined in terms of the total strain-energy-release rate and the mode I to mode II ratio as a function of debond length for each specimen geometry. These results basically clustered into two groups: geometric linear or geometric nonlinear analysis. The geometric nonlinear analysis is required to properly analyze the CLS specimens. The 3-D finite element analysis gave indications of edge closure plus some mode III loading. Each participant described his analytical technique and results. Nine laboratories participated.

  3. Stress analysis of the cracked lap shear specimens: An ASTM round robin

    Science.gov (United States)

    Johnson, W. S.

    1986-01-01

    This ASTM Round Robin was conducted to evaluate the state of the art in stress analysis of adhesively bonded joint specimens. Specifically, the participants were asked to calculate the strain-energy-release rate for two different geometry cracked lap shear (CLS) specimens at four different debond lengths. The various analytical techniques consisted of 2- and 3-dimensional finite element analysis, beam theory, plate theory, and a combination of beam theory and finite element analysis. The results were examined in terms of the total strain-energy-release rate and the mode I to mode II ratio as a function of debond length for each specimen geometry. These results basically clustered into two groups: geometric linear or geometric nonlinear analysis. The geometric nonlinear analysis is required to properly analyze the CLS specimens. The 3-D finite element analysis gave indications of edge closure plus some mode III loading. Each participant described his analytical technique and results. Nine laboratories participated.

  4. Machining of the Flat Surfaces with Abrasive-metallic Lapping Tools

    Institute of Scientific and Technical Information of China (English)

    Adam Barylski

    2004-01-01

    The constructional principle of abrasion metal disc is that abrasive insertions are spread uniformly on the working surface of a metal base. During lapping by means of such tools only the machining fluid is dosed and that by drop.Abrasive elements of circular shape pellets are produced by mixing boron carbide BC400 micrograins with electrographite components, the pellets were pressed with a load of about 12 kN. Next they were heated in furnace at about 520K for hours,then cooled together with the furnace. Tests were carried out on the making of circular abrasive insertions of which the main components were born carbide and micrograins of electric copper mixed the epoxide resins.

  5. Machining of the Flat Surfaces with Abrasive-metallic Lapping Tools

    Institute of Scientific and Technical Information of China (English)

    AdamBarylski

    2004-01-01

    The constructional principle of abrasion metal disc is that abrasive insertions are spread uniformly on the working surface of a metal base. During lapping by means of such tools only the machining fluid is dosed and that by drop. Abrasive elements of circular shape pellets are produced by mixing boron carbide BC400 micrograins with electrographite components, the pellets were pressed with a load of about 12 kN. Next they were heated in furnace at about 520K for hours, then cooled together with the furnace. Tests were carried out on the making of circular abrasive insertions of which the main components were born carbide and micrograins of electric copper mixed the epoxide resins.

  6. Fatigue de-bond growth in adhesively bonded single lap joints

    Indian Academy of Sciences (India)

    P K Sahoo; B Dattaguru; C M Manjunatha; C R L Murthy

    2012-02-01

    The fatigue de-bond growth studies have been conducted on adhesively bonded lap joint specimens between aluminium and aluminium with Redux-319A adhesive with a pre-defined crack of 3 mm at the bond end. The correlations between fracture parameters and the de-bond growth data are established using both numerical and experimental techniques. In the numerical method, geometrically non-linear finite element analyses were carried out on adhesively bonded joint specimen for various de-bond lengths measured from the lap end along the mid-bond line of the adhesive. The finite element results were post processed to estimate the SERR components $G_I$ and $G_{II}$ using the Modified Virtual Crack Closure Integral (MVCCI) procedure. In experimental work, specimens were fabricated and fatigue de-bond growth tests were conducted at a stress ratio $R = −1$. The results obtained from both numerical analyses and testing have been used to generate de-bond growth curve and establish de-bond growth law in the Paris regime for such joints. The de-bond growth rate is primarily function of mode-I SERR component $G_I$ since the rate of growth in shear mode is relatively small. The value of Paris exponent is found to be 6.55. The high value of de-bond growth exponent in Paris regime is expected, since the adhesive is less ductile than conventional metallic materials. This study is important for estimating the life of adhesively bonded joints under both constant and variable amplitude fatigue loads.

  7. LAPS在冰雹云模拟中的应用%The Application of LAPS to Hail Cloud Simulation

    Institute of Scientific and Technical Information of China (English)

    向玉春; 杨军; 唐仁茂; 付丹红; 李德俊; 彭菊香

    2012-01-01

    Local Analysis and Prediction System (LAPS) introduced and localized by Wuhan Institute of Heavy Rain integrates a variety of observations in central China and provides rich information on high-resolution meso-scale analysis field. Several hail weather processes occurred in mountainous region of western Hubei on 27 and 28 July in 2008 are analyzed based on LAPS data. And the hailstorm cloud is simulated with the three-dimensional convective cloud model which is initiated with the output of LAPS and the sounding. The difference between dew point and air temperature of sounding data and LAPS data at 0800 BT 27 July 2008 shows the humidity is higher above the hail location. According to LAPS data from 0800 BT to 1600 BT at the hail location, the temperature profiles show that there is cold air inflow in the upper air, and the differences between dew point and air temperature demonstrate that the humidity increases near the ground and then decreases with the altitude, while increases again in the upper air. LAPS data show the stratification status and wind field over the hail point is more and more favorable for hail formation, reflecting more realistic information than the sounding data at 0800 BT. The simulation results initiated with LAPS data and sounding data at 0800 BT 27 July 2008 are very close, but on 28 July the simulated echo intensity, vertical airflow speed, max wind speed and the amount of hail by LAPS data of the hail location are greater than that by sounding data. The simulation results initiated with LAPS data at 1600 BT 27 July and 1600 BT 28 July in 2008 near the hail time are larger than that at 0800 BT and the simulated amount of accumulated hail by LAPS data at 1600 BT is closer to the observation. It can be concluded that the simulation initiated with LAPS data near the hail time can better reflect the occurrence and development of the hail cloud which occurs in the afternoon. The simulated results of cloud maintenance time, hail intensity and

  8. Preservation of ancient impact ages on the R chondrite parent body: 40Ar/39Ar age of hornblende‐bearing R chondrite LAP 04840

    National Research Council Canada - National Science Library

    Righter, K; Cosca, M. A; Morgan, L. E

    2016-01-01

    The hornblende‐ and biotite‐bearing R chondrite LAP 04840 is a rare kind of meteorite possibly containing outer solar system water stored during metamorphism or postshock annealing deep within an asteroid...

  9. Growth of thin, c-axis oriented Sr-doped LaP3O9 electrolyte membranes in condensed phosphoric acid solutions

    Science.gov (United States)

    Hatada, Naoyuki; Takahashi, Kota; Adachi, Yoshinobu; Uda, Tetsuya

    2016-08-01

    Proton-conducting Sr-doped LaP3O9 has potential application as electrolytes in intermediate temperature fuel cells, but reduction of the electrical resistance of the electrolyte membranes is necessary for practical applications. In this study, we focused on reducing the resistance by reducing the electrolyte thickness, while maintaining a preferable microstructure for proton conduction (c-axis orientation and absence of the small-crystal layer). Thin, c-axis oriented Sr-doped LaP3O9 membranes were successfully obtained in condensed phosphoric acid solutions by a novel "two-step precipitation method". In this method, Sr-doped LaP3O9 powder was artificially deposited on the surface of the carbon paper supports as seeds, and then columnar crystals were grown "downward" in the solutions. We expect that this method will be utilized to produce LaP3O9 electrolyte membranes with lower electrical resistance.

  10. La "Torre dei diamanti" in Castel Gavone. Un esempio di architettura del potere nel Finale alla fine del Quattrocento, a cura di Tiziano Mannoni e Giovanni Murialdo, Cd-rom, Comune di Finale Ligure, 2002

    OpenAIRE

    Paola Guglielmotti

    2003-01-01

    Review of La "Torre dei diamanti" in Castel Gavone. Un esempio di architettura del potere nel Finale alla fine del Quattrocento, a cura di Tiziano Mannoni e Giovanni Murialdo, Cd-rom, Comune di Finale Ligure, 2002 .

  11. La "Torre dei diamanti" in Castel Gavone. Un esempio di architettura del potere nel Finale alla fine del Quattrocento, a cura di Tiziano Mannoni e Giovanni Murialdo, Cd-rom, Comune di Finale Ligure, 2002

    Directory of Open Access Journals (Sweden)

    Paola Guglielmotti

    2003-06-01

    Full Text Available Review of La "Torre dei diamanti" in Castel Gavone. Un esempio di architettura del potere nel Finale alla fine del Quattrocento, a cura di Tiziano Mannoni e Giovanni Murialdo, Cd-rom, Comune di Finale Ligure, 2002 .

  12. Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

    Institute of Scientific and Technical Information of China (English)

    SHANG Chun-min; ZHANG Dong-mei; YANG Jian-dong; ZHANG Xin-ming

    2006-01-01

    A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.

  13. Optimization of process parameters for friction stir lap welding of carbon fibre reinforced thermoplastic composites by Taguchi method

    Energy Technology Data Exchange (ETDEWEB)

    Ahmadi, H.; Arab, N. B. Mostafa; Ghasemi, F. Ashenai [Shahid Rajaee Teacher Training University, Tehran (Iran, Islamic Republic of)

    2014-01-15

    Friction stir welding process parameters such as welding speed, rotational speed and tilt angle affect the strength of the weld joint. For maximizing the weld strength, these process parameters must therefore be properly selected and optimized. This study presents an application of Taguchi method to optimize process parameters like welding speed, rotational speed and tilt angle to maximize lap weld tensile-shear strength in 4 mm thick polypropylene composite sheets with 20 wt% carbon fiber. To this end, a L9 orthogonal array of Taguchi method using three factors at three levels was used. Analysis of variance and confirmation tests were conducted. The results indicated that welding speed, rotational speed and tilt angle are respectively the significant parameters affecting the lap weld strength. Optimization results also showed that tensile-shear strength of 6.06 MPa was obtained when welding speed, rotational speed and tilt angle were 25 mm/min, 1250 rpm and 1 degree, respectively.

  14. Rationale and Design of the Reduce Elevated Left Atrial Pressure in Patients With Heart Failure (Reduce LAP-HF) Trial

    DEFF Research Database (Denmark)

    Hasenfuss, Gerd; Gustafsson, Finn; Kaye, David

    2015-01-01

    OBJECTIVE: Heart failure with preserved ejection fraction (HFpEF) is characterized by elevated left atrial pressure during rest and/or exercise. The Reduce LAP-HF (Reduce Elevated Left Atrial Pressure in Patients With Heart Failure) trial will evaluate the safety and performance of the Interatrial...... include exercise tolerance, quality of life, and the incidence of heart failure hospitalization. CONCLUSION: Reduce LAP-HF is the first trial intended to lower left atrial pressure in HFpEF by means of creating a permanent shunt through the atrial septum with the use of a device. Although the trial...... patients with ejection fraction ≥40% and New York Heart Association functional class III or IV heart failure with a pulmonary capillary wedge pressure (PCWP) ≥15 mm Hg at rest or ≥25 mm Hg during supine bike exercise will be implanted with an IASD System II, and followed for 6 months to assess the primary...

  15. 单晶蓝宝石的延性研磨加工%Ductile lapping of single crystal sapphire

    Institute of Scientific and Technical Information of China (English)

    戴欣平; 赵萍; 文东辉

    2012-01-01

    To achieve the ductile lapping of a single crystal sapphire, micro/nano mechanic characteristics of the sapphire (0001) plane were measured by nanoindentation and nanoscratch methods. The indentation model of single cone abrasive grain was proposed and then critical force conditions were deduced during ductile lapping process. Experimental studies were conducted for the single crystal sapphire based on the diamond abrasive grain charging into a synthetic tin plate, and characteristics of ductile lapped surface were measured by a NT9800 white light interferometer, a Scan Emission Microscopy (SEM) and a Transmission Electron Microscopy (TEM). Experimental results show that nanoindentation and nanoscratch methods can provide processing parameters for the ductile lapping of single crystal sapphires, and its critical depth of pile-up is around 100 nm for sapphire nanoindenta-tion. The ductile lapping of the single crystal sapphire can be implemented by charging into diamond abrasive grains and selecting proper loads and the optimal load for ductile lapping is 21 kPa. After ductile lapping, the surface scratch depth of single crystal sapphire shows a smaller dispersion and the dislocation and slip are formed on the lapped surface.%为实现单晶蓝宝石的延性研磨加工,采用纳米压痕和划痕法测试并分析了单晶蓝宝石(0001)面的微纳力学特性,建立了单颗圆锥状磨粒的压入模型并计算了延性研磨加工的受力临界条件,分析了金刚石磨粒嵌入合成锡研磨盘表面的效果.对单晶蓝宝石进行了延性研磨加工试验,采用NT9800白光干涉仪、扫描电子显微镜(SEM)和透射电子显微镜(TEM)等方法分析了单晶蓝宝石的延性研磨表面特征.试验结果表明:采用纳米压痕和划痕法可以为单晶蓝宝石的延性研磨加工提供工艺参数,单晶蓝宝石的延性堆积的极限深度为100 nm,金刚石磨粒的嵌入及在适当载荷下可以实现蓝宝石的延性研磨加

  16. Breve guida didattica e metodologica all'elaborazione di una tesina e alla lettura di un testo di studio

    Directory of Open Access Journals (Sweden)

    Fernando Cipriani

    2013-08-01

    strategie di lettura: globale e analitica; lettura intensiva, i simboli grafici, parole chiave e frasi chiave, dal breve riassunto alla sintesi. Gradualità nelle scelta delle letture, dalla lettura formativa alle letture di approfondimento, dal riassunto alla sintesi.

  17. Proliferation of progeria cells is enhanced by lamina-associated polypeptide 2α (LAP2α) through expression of extracellular matrix proteins.

    Science.gov (United States)

    Vidak, Sandra; Kubben, Nard; Dechat, Thomas; Foisner, Roland

    2015-10-01

    Lamina-associated polypeptide 2α (LAP2α) localizes throughout the nucleoplasm and interacts with the fraction of lamins A/C that is not associated with the peripheral nuclear lamina. The LAP2α-lamin A/C complex negatively affects cell proliferation. Lamins A/C are encoded by LMNA, a single heterozygous mutation of which causes Hutchinson-Gilford progeria syndrome (HGPS). This mutation generates the lamin A variant progerin, which we show here leads to loss of LAP2α and nucleoplasmic lamins A/C, impaired proliferation, and down-regulation of extracellular matrix components. Surprisingly, contrary to wild-type cells, ectopic expression of LAP2α in cells expressing progerin restores proliferation and extracellular matrix expression but not the levels of nucleoplasmic lamins A/C. We conclude that, in addition to its cell cycle-inhibiting function with lamins A/C, LAP2α can also regulate extracellular matrix components independently of lamins A/C, which may help explain the proliferation-promoting function of LAP2α in cells expressing progerin.

  18. Reducing the Hook Defect of Friction Stir Lap Welded Ti-6Al-4V Alloy by Slightly Penetrating into the Lower Sheet

    Science.gov (United States)

    Ji, Shude; Li, Zhengwei

    2017-02-01

    For the purpose of reducing the hook defect in friction stir lap welding joint, Ti-6Al-4V alloy was lap welded by slightly penetrating into the lower sheet. Hook feature, microstructure and mechanical properties of the lap joints were mainly discussed. Results show that using slight penetration, plastic material mainly concentrates above the lap interface, which is beneficial to suppress the primary hook and broaden the stir zone (SZ) width. Simultaneously, a very small secondary hook is formed. The void-like defect, which is formed due to high peak temperature and big temperature gradient along thickness, can be eliminated by decreasing the rotating speed. Microstructures along thickness show much difference due to big temperature gradient. SZ hardness of both the upper and lower sheets is higher than the base material due to finer grains. Bigger lap shear failure load can be obtained using 150 rpm, which is 17.1 KN. Lap joints fracture along the secondary hook and present ductile fracture mode.

  19. Nonstationary Interference Excision in Time-Frequency Domain Using Adaptive Hierarchical Lapped Orthogonal Transform for Direct Sequence Spread Spectrum Communications

    Directory of Open Access Journals (Sweden)

    Zhu Yi-Sheng

    2003-01-01

    Full Text Available An adaptive hierarchical lapped orthogonal transform (HLOT exciser is proposed for tracking, localizing, and rejecting the nonstationary interference in direct sequence spread spectrum (DSSS communications. The method is based on HLOT. It utilizes a fast dynamic programming algorithm to search for the best basis, which matches the interference structure best, in a library of lapped orthogonal bases. The adaptive HLOT differs from conventional block transform and the more advanced modulated lapped transform (MLT in that the former produces arbitrary time-frequency tiling, which can be adapted to the signal structure, while the latter yields fixed tilings. The time-frequency tiling of the adaptive HLOT can be time varying, so it is also able to track the variations of the signal time-frequency structure. Simulation results show that the proposed exciser brings significant performance improvement in the presence of nonstationary time-localized interference with or without instantaneous frequency (IF information compared with the existing block transform domain excisers. Also, the proposed exciser is effective in suppressing narrowband interference and combined narrowband and time-localized impulsive interference.

  20. An investigation of interfacial stresses in adhesively-bonded single lap joints subject to transverse pulse loading

    Science.gov (United States)

    Nwankwo, E.; Soleiman Fallah, A.; Louca, L. A.

    2013-04-01

    Debonding in adhesively-bonded lap joints is a detrimental failure mode contingent upon the level of stresses develped in the adhesive. In this work, an analytical model is developed to estimate the peel and shear stresses in an isotropic elastic adhesive in a single lap joint subjected to transverse pulse loads. The proposed analytical model is an extension of the mathematical models developed by He and Rao (Journal of Sound and Vibration 152 (3), (1992) 405-416, 417-425) to study the coupled transverse and longitudinal vibrations of a bonded lap joint system. The adhesive, in this work, is modelled as an elastic isotropic material implemented in Abaqus 6.9-1. The interfacial stresses obtained by finite element simulations were used to validate the proposed analytical model. The maximum peel and shear stresses in the adhesive as predicted by the analytical model were found to correlate well with the maximum stresses predicted by the corresponding numerical models. The peel stresses in the adhesive were found to be higher than shear stresses, a result which is consistent with intuition for transversally loaded joints. The analytical model is able to predict the maxium stresses in the edges where debonding initiates due to the highly asymetrical stress distribution as observed in the finite element simulations and experiment. This phenomenon is consistent with observations made by Vaidya et al. (International Journal of Adhesion & Adhesives 26 (2006) 184-198). The stress distribution under uniformily distributed transverse pulse loading was observed to be similarly asymetric.

  1. Effects of Fiber Denier, Fiber Cross-Sectional Shape and Fabric Density on Acoustical Behavior of Vertically Lapped Nonwoven Fabrics

    Directory of Open Access Journals (Sweden)

    Mevlut Tascan, Ph.D.

    2008-06-01

    Full Text Available Acoustical insulation and absorption properties of nonwoven fabrics depend on fiber geometry and fiber arrangement within the fabric structure. The different structures of the fibers result in different total surface areas of nonwoven fabrics. Nonwoven fabrics such as vertically lapped fabrics are ideal materials for use as acoustical insulation products, because they have high total surface. Vertically lapped nonwoven technology consists of carding, perpendicular layering of the carded webs, and through-air bonding using synthetic binder fibers. The surface area of the fabric is directly related to the denier and cross-sectional shape of the fibers in the fabric. Smaller deniers yield more fibers per unit weight of the material, higher total fiber surface area, and greater possibilities for a sound wave to interact with the fibers in the fabric structure.The research in the literature uses two methods for measuring acoustical properties of fabric materials: the impedance tube and reverberation room method. Small test samples are in the impedance tube method and sound absorption coefficient is determined at each frequency. Large reverberation rooms and large test samples are used for the reverberation room method. A direct comparative acoustical properties measurement device that was designed and fabricated at Clemson University School of Materials Science & Engineering was used to measure acoustical insulation in this research. This paper provides a description of the measurement devices and acoustical measurement data for vertically lapped nonwoven fabrics made from three different polyester fiber shape and two denier levels.

  2. Endovascular management of lap belt-related abdominal aortic injury in a 9-year-old child.

    Science.gov (United States)

    Papazoglou, Konstantinos O; Karkos, Christos D; Kalogirou, Thomas E; Giagtzidis, Ioakeim T

    2015-02-01

    Blunt abdominal aortic trauma is a rare occurrence in children with only a few patients having been reported in the literature. Most such cases have been described in the context of lap belt injuries. We report a 9-year-old boy who suffered lap belt trauma to the abdomen during a high-speed road traffic accident resulting to the well-recognized pattern of blunt abdominal injury, that is, the triad of intestinal perforation, fractures of the lumbar spine, and abdominal aortic injury. The latter presented with lower limb ischemia due to dissection of the infrarenal aorta and right common iliac artery. Revascularization was achieved by endovascular means using 2 self-expanding stents in the infrarenal aorta and the right common iliac artery. This case is one of the few reports of lap belt-related acute traumatic abdominal aortic dissection in a young child and highlights the feasibility of endovascular management in the pediatric population. Copyright © 2015 Elsevier Inc. All rights reserved.

  3. Effect of parameters on local stress field in single-lap bolted joints with the interference fit

    Directory of Open Access Journals (Sweden)

    Jiefeng Jiang

    2016-05-01

    Full Text Available From the interference fit bolt installation to tensile loading stage in single-lap joint with a hi-lock bolt, the stress and strain fields were studied experimentally and numerically. A three-dimensional finite element model was generated to simulate the experimental setup, which was validated using the experimental data. The fatigue behavior of the bolted joint is influenced by the local stress fields on the faying surface near the holes in single-lap joints. Therefore, with the aim to improve design awareness, the effects of the parameters on the local stress fields were investigated by means of finite element simulation. With an increase in the interference fit size, the occurred position of the maximum stress values on the upper plate faying surface moves away from the hole edge gradually. As the clamping force or friction coefficient increases, the position of larger stress area is changed to the side of bearing load from the transverse direction. The lap geometry of the bolted joint as well as the amplitude of tensile load has apparent impact on the maximum stress value.

  4. Residual Stresses and Tensile Properties of Friction Stir Welded AZ31B-H24 Magnesium Alloy in Lap Configuration

    Science.gov (United States)

    Naik, Bhukya Srinivasa; Cao, Xinjin; Wanjara, Priti; Friedman, Jacob; Chen, Daolun

    2015-08-01

    AZ31B-H24 Mg alloy sheets with a thickness of 2 mm were friction stir welded in lap configuration using two tool rotational rates of 1000 and 1500 rpm and two welding speeds of 10 and 20 mm/s. The residual stresses in the longitudinal and transverse directions of the weldments were determined using X-ray diffraction. The shear tensile behavior of the lap joints was evaluated at low [233 K (-40 °C)], room [298 K (25 °C)], and elevated [453 K (180 °C)] temperatures. The failure load was highest for the lower heat input condition that was obtained at a tool rotational rate of 1000 rpm and a welding speed of 20 mm/s for all the test temperatures, due to the smaller hooking height, larger effective sheet thickness, and lower tensile residual stresses, as compared to the other two welding conditions that were conducted at a higher tool rotational rate or lower welding speed. The lap joints usually fractured on the advancing side of the top sheet near the interface between the thermo-mechanically affected zone and the stir zone. Elevated temperature testing of the weld assembled at a tool rotational rate of 1000 rpm and a welding speed of 20 mm/s led to the failure along the sheet interface in shear fracture mode due to the high integrity of the joint that exhibited large plastic deformation and higher total energy absorption.

  5. “Mne govorjat, kakaja bednost’ slovarja...” Il protosamizdat del periodo staliniano alla ricerca di un’espressività

    Directory of Open Access Journals (Sweden)

    Massimo Maurizio

    2015-07-01

    Full Text Available L’estetica della letteratura afferente al circuito samizdat dopo il XX congresso del PCUS (1956 è strettamente legata alla produzione non ufficiale del periodo staliniano, a sua volta definitasi secondo una relazione antitetica alla poesia proletaria degli anni Venti. Molte delle figure di rife- rimento di questo periodo hanno attinto il proprio linguaggio e gli strumenti poetici dall'arsenale espressivo e formale del Secolo d’Argento, sebbene differenziadosene notevolmente e adattan- dolo all'estetica che essi perseguivano, intimamente alternativa a quella realsocialista. La com- plessa poetica di autori quali E. Kropivnickij, Jan Satunovskj (come anche, in un periodo succes- sivo, il “discepolo” del primo G Sapgir e molti altri hanno attinto i tratti distintivi della propria produzione dalla rielaborazione dell’arte proletaria della prima metà degli anni Venti alla luce di una visione dissacrante e grottesca della contemporaneità, che emerge in primo luogo dall'aspetto delle loro opere poetiche. 

  6. Dissimilar Al/steel friction stir welding lap joints for automotive applications

    Science.gov (United States)

    Campanella, D.; Spena, P. Russo; Buffa, G.; Fratini, L.

    2016-10-01

    A widespread usage of aluminum alloys for the fabrication of car-body parts is conditional on the employment of appropriate welding methods, especially if dissimilar welding must be performed with automotive steel grades. Dissimilar welding of aluminum alloys and steel grades poses some issues concerning the formation of brittle intermetallic compounds, difference in physical and chemical properties of the parent metals, and poor wetting behavior of aluminum. Friction stir welding is considered to be a reasonable solution to obtain sound aluminum/steel joints. A study on the join quality of dissimilar lap joints of steel and aluminum alloy sheets after friction stir welding is proposed here. A low carbon steel is joined with AA6016 aluminum alloy to study preliminarily the feasibility to assembly car-body parts. The joints, welded with tool rotation and feed rate varying in a wide range, have been studied from a visual examination and microstructural point of view. Optical microscopy has been used to characterize the microstructure of the examined sheets in as-received and welded conditions. Micro-hardness measurements have been carried out to quantitatively analyze the local hardness of the welded joints. Set welding process parameters are identified to assemble without the presence of macroscopic defects the examined steel and aluminum welded parts.

  7. Simulation analysis and nondestructive testing of flexural performance of wood single lap glued joints

    Directory of Open Access Journals (Sweden)

    Wei Lu

    2012-11-01

    Full Text Available The effect of joint size on the loading capacity of wood single lap joints was studied with an orthogonal experimental design. The maximum load, modulus of elasticity, and modulus of rupture were the three mechanical indexes used to evaluate wood joint quality. A simulation model of bending tests was established using the finite element method. The stress distributions of the joints were analyzed; the peak stripping stress was reduced with an increase in gluing length and thickness. The increase in the corresponding experimental values of maximum load was in agreement with this conclusion. The joint force for various loading positions was simulated, and the peak stress was lowest at the location with the maximum offset. Therefore, the bending capacity of the wood joints can be improved by changing the loading position. Nondestructive fast Fourier transform (FFT testing of the bending vibration was used to obtain the dynamic elastic modulus. A significant correlation existed between modulus of elasticity and modulus of rupture. Finite element simulation analysis and nondestructive testing are all effective methods for quality evaluation of wood joints, and they can be applied to the design and testing of wood joints.

  8. Design Considerations of Polishing Lap for Computer-Controlled Cylindrical Polishing Process

    Science.gov (United States)

    Khan, Gufran S.; Gubarev, Mikhail; Speegle, Chet; Ramsey, Brian

    2010-01-01

    The future X-ray observatory missions, such as International X-ray Observatory, require grazing incidence replicated optics of extremely large collecting area (3 m2) in combination with angular resolution of less than 5 arcsec half-power diameter. The resolution of a mirror shell depends ultimately on the quality of the cylindrical mandrels from which they are being replicated. Mid-spatial-frequency axial figure error is a dominant contributor in the error budget of the mandrel. This paper presents our efforts to develop a deterministic cylindrical polishing process in order to keep the mid-spatial-frequency axial figure errors to a minimum. Simulation studies have been performed to optimize the operational parameters as well as the polishing lap configuration. Furthermore, depending upon the surface error profile, a model for localized polishing based on dwell time approach is developed. Using the inputs from the mathematical model, a mandrel, having conical approximated Wolter-1 geometry, has been polished on a newly developed computer-controlled cylindrical polishing machine. We report our first experimental results and discuss plans for further improvements in the polishing process.

  9. Multi-Track Friction Stir Lap Welding of 2024 Aluminum Alloy: Processing, Microstructure and Mechanical Properties

    Directory of Open Access Journals (Sweden)

    Shengke Zou

    2016-12-01

    Full Text Available Friction stir lap welding (FSLW raises the possibility of fabricating high-performance aluminum components at low cost and high efficiency. In this study, we mainly applied FSLW to fabricate multi-track 2024 aluminum alloy without using tool tilt angle, which is important for obtaining defect-free joint but significantly increases equipment cost. Firstly, systematic single-track FSLW experiments were conducted to attain appropriate processing parameters, and we found that defect-free single-track could also be obtained by the application of two-pass processing at a rotation speed of 1000 rpm and a traverse speed of 300 mm/min. Then, multi-track FSLW experiments were conducted and full density multi-track samples were fabricated at an overlapping rate of 20%. Finally, the microstructure and mechanical properties of the full density multi-track samples were investigated. The results indicated that ultrafine equiaxed grains with the grain diameter about 9.4 μm could be obtained in FSLW samples due to the dynamic recrystallization during FSLW, which leads to a yield strength of 117.2 MPa (17.55% higher than the rolled 2024-O alloy substrate and an elongation rate of 31.05% (113.84% higher than the substrate.

  10. Strength analysis of laser welded lap joint for ultra high strength steel

    Science.gov (United States)

    Jeong, Young Cheol; Kim, Cheol Hee; Cho, Young Tae; Jung, Yoon Gyo

    2013-12-01

    Several industries including the automotive industry have recently applied the process of welding high strength steel. High strength steel is steel that is harder than normal high strength steel, making it much stronger and stiffer. HSS can be formed in pieces that can be up to 10 to 15 percent thinner than normal steel without sacrificing strength, which enables weight reduction and improved fuel economy. Furthermore, HSS can be formed into complex shapes that can be welded into structural areas. This study is based on previous experiments and is aimed at establishing the stress distribution for laser welded high strength steel. Research on the stress distribution for laser welded high strength steel is conducted by using Solid Works, a program that analyzes the stress of a virtual model. In conclusion, we found that the stress distribution is changed depending on the shape of welded lap joint. In addition, the Influence of the stress distribution on welded high strength steel can be used to standard for high energy welding of high strength steel, and we can also predict the region in welded high strength steel that may cracked.

  11. Analysis of debonding in single lap joints based on employment of ultrasounds

    Science.gov (United States)

    Scarselli, G.; Nicassio, F.

    2017-04-01

    In this study the amplitude and the phase of the structural response of samples of Single Lap Joint (SLJ) subjected to ultrasonic harmonic excitation was evaluated to identify and characterize the defects within the bonded region. Different parameters such as frequency, shape, and amplitude of the response signal coming back from the adhesive joint are key criteria for understanding the quality of the adhesion. Different metallic samples with the same geometry were experimentally tested: the defects were artificially introduced bonding partially two plates and changing the extension of the debonded region: two piezoelectric sensors (one exciting, one receiver) were attached on each of the two bonded plates. In this way, different experimental tests were carried out in order to study the influence of debonded regions on SLJ structural behavior. The structural dynamic response of the debonded samples was investigated and compared with the predictions of numerical models, for each SLJ, introducing viscoelastic properties for the adhesive layer, and applying the harmonic excitation. Moreover the numerical modal analysis was used to understand the experimental results by a proper description of viscoelastic tape behavior. The numerical simulations were used to find correlation between the content of the acquired signals and the defects of adhesion.

  12. Laser-assisted friction stir welding of aluminum alloy lap joints: microstructural and microhardness characterizations

    Science.gov (United States)

    Casalino, Giuseppe; Campanelli, Sabina L.; Contuzzi, Nicola; Angelastro, Andrea; Ludovico, Antonio D.

    2014-02-01

    Friction Stir Welding (FSW) is a solid-state joining process; i.e., no melting occurs. The welding process is promoted by the rotation and translation of an axis-symmetric non-consumable tool along the weld centerline. Thus, the FSW process is performed at much lower temperatures than conventional fusion welding, nevertheless it has some disadvantages. The laser Assisted Friction Stir Welding (LAFSW) combines a Friction Stir Welding machine and a laser system. Laser power is used to preheat and to plasticize the volume of the workpiece ahead of the rotating tool; the workpiece is then joined in the same way as in the conventional FSW process. In this work an Ytterbium fiber laser with maximum power of 4 kW and a commercial FSW machine were coupled. Both FSW and LAFSW tests were conducted on 3 mm thick 5754H111 aluminum alloy plates in lap joint configuration with a constant tool rotation rate and with different feed rates. The two processes were compared and evaluated in terms of differences in the microstructure and in the micro-hardness profile.

  13. Growth kinetics of Al–Fe intermetallic compounds during annealing treatment of friction stir lap welds

    Energy Technology Data Exchange (ETDEWEB)

    Movahedi, M., E-mail: m_movahedi@sharif.edu [Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Azadi Ave., Tehran (Iran, Islamic Republic of); Kokabi, A.H., E-mail: kokabi@sharif.edu [Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Azadi Ave., Tehran (Iran, Islamic Republic of); Seyed Reihani, S.M., E-mail: reihani@sharif.edu [Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Azadi Ave., Tehran (Iran, Islamic Republic of); Najafi, H., E-mail: hossein.najafi@epfl.ch [Institute of Condensed Matter Physics (ICMP), EPFL, CH-1015 Lausanne (Switzerland); Farzadfar, S.A., E-mail: seyed-amir.farzadfar@mail.mcgill.ca [McGill University, Department of Materials Engineering, Montreal, QC H3A 2B2 (Canada); Cheng, W.J., E-mail: d9603505@mail.ntust.edu.tw [Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan, ROC (China); Wang, C.J., E-mail: cjwang@mail.ntust.edu.tw [Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan, ROC (China)

    2014-04-01

    In this study, we explored the growth kinetics of the Al–Fe intermetallic (IM) layer at the joint interface of the St-12/Al-5083 friction stir lap welds during post-weld annealing treatment at 350, 400 and 450 °C for 30 to 180 min. Optical microscope (OM), field emission gun scanning electron microscope (FEG-SEM) and transmission electron microscope (TEM) were employed to investigate the structure of the weld zone. The thickness and composition of the IM layers were evaluated using image analysis system and electron back-scatter diffraction (EBSD), respectively. Moreover, kernel average misorientation (KAM) analysis was performed to evaluate the level of stored energy in the as-welded state. The results showed that the growth kinetics of the IM layer was not governed by a parabolic diffusion law. Presence of the IM compounds as well as high stored energy near the joint interface of the as-welded sample was recognized to be the origin of the observed deviation from the parabolic diffusion law. - Highlights: • This work provided a new insight into growth kinetics of Al–Fe IM thickness. • The growth kinetics of IM layer was not governed by a parabolic diffusion law. • IM near the joint interface was the origin of deviation from the parabolic law. • High stored energy at joint interface was origin of deviation from parabolic law.

  14. Nondestructive Evaluation of Friction Stir-Welded Aluminum Alloy to Coated Steel Sheet Lap Joint

    Science.gov (United States)

    Das, H.; Kumar, A.; Rajkumar, K. V.; Saravanan, T.; Jayakumar, T.; Pal, Tapan Kumar

    2015-11-01

    Dissimilar lap joints of aluminum sheet (AA 6061) of 2 mm thickness and zinc-coated steel sheet of 1 mm thickness were produced by friction stir welding with different combinations of rotational speed and travel speed. Ultrasonic C- and B-scanning, and radiography have been used in a complementary manner for detection of volumetric (cavity and flash) and planar (de bond) defects as the defects are in micron level. Advanced ultrasonic C-scanning did not provide any idea about the defects, whereas B-scanning cross-sectional image showed an exclusive overview of the micron-level defects. A digital x-ray radiography methodology is proposed for quality assessment of the dissimilar welds which provide three-fold increase in signal-to-noise ratio with improved defect detection sensitivity. The present study clearly shows that the weld tool rotational speed and travel speed have a decisive role on the quality of the joints obtained by the friction stir welding process. The suitability of the proposed NDE techniques to evaluate the joint integrity of dissimilar FSW joints is thus established.

  15. Lap Fillet Welding of Thin Sheet AZ31 Magnesium Alloy with Pulsed Nd:YAG Laser

    Science.gov (United States)

    Ishak, Mahadzir; Yamasaki, Kazuhiko; Maekawa, Katsuhiro

    In recent years, reducing the size and weight of consumer products requires the joining of thin sheets of magnesium alloys with both thickness and joining area of less than 1mm, especially for packaging purposes. Conventional welding processes are difficult to joint a thin sheet magnesium alloy because of high heat input, which in turns leads to various problems such as burn through and cracks. In this study, lap fillet welding of thin sheet magnesium alloy AZ31B with a thickness of 0.3 mm has been carried out using a pulsed Nd:YAG laser beam. The influences of gap, laser beam center location and scan speed on joint appearances have been investigated. It was found that defects were significantly reduced when the gap width was less than 35 µm when the laser beam center was located just on the edge of the upper specimen (x=0), and scan speed was varied from 400 to 450 m/min. Wider bond width at average value of 300 µm was achieved when the beam center was at x=0 with a wide range of scan speeds from 250 to 450 mm/min compared with the cases at x=-0.1 and -0.2 mm from edge. Increases in bond width and minimal defects at x=0 improve fracture load by 68% compared with those at x=-0.1 mm.

  16. DIDATTICA DELLA CHIMICA E TRASPOSIZIONE DIDATTICA Parte seconda - Un’approccio didattico alla costruzione del concetto di trasformazione chimica

    Directory of Open Access Journals (Sweden)

    Elena Ghibaudi

    2016-12-01

    Full Text Available Questa seconda parte illustra un esempio di trasposizione didattica realizzata in Italia, in classi della scuola secondaria di II grado. Oggetto della trasposizione sono i concetti di trasformazione chimica, di reazione chimica e di equazione di reazione; un risultato di questo percorso è l’introduzione della distinzione fra le nozioni di atomo e molecola da parte degli allievi stessi, come ipotesi necessaria per interpretare la fenomenologia osservata. L’approccio adottato in questa sequenza è di tipo storico-epistemologico e la prassi mediante la quale viene realizzata è socio-costruttivista. Lo strumento didattico è la situazione-problema. Nella prima parte di questo articolo vengono presentate le attività che consentono agli studenti di elaborare il concetto di trasformazione chimica a partire dal concetto di identità di una sostanza chimica e dall’utilizzo del modello particellare. Nella seconda parte vengono presentate le attività di apprendimento che partendo dal contrasto fra le idee di Dalton (atomo indivisibile e quelle di Gay-Lussac (legge di combinazione dei gas portano alle ipotesi di Avogadro e alla distinzione fra molecole e atomi operata da Cannizzaro.

  17. Quantification of character-impacting compounds in Ocimum basilicum and 'Pesto alla Genovese' with selected ion flow tube mass spectrometry.

    Science.gov (United States)

    Amadei, Gianluca; Ross, Brian M

    2012-02-15

    Basil (Ocimum basilicum) is an important flavourant plant which constitutes the major ingredient of the pasta sauce 'Pesto alla Genovese'. The characteristic smell of basil stems mainly from a handful of terpenoids (methyl cinnamate, eucalyptol, linalool and estragole), the concentration of which varies according to basil cultivars. The simple and rapid analysis of the terpenoid constituents of basil would be useful as a means to optimise harvesting times and to act as a quality control process for basil-containing foodstuffs. Classical analytical techniques such as gas chromatography/mass spectrometry (GC/MS) are, however, slow, technically demanding and therefore less suitable for routine analysis. A new chemical ionisation technique which allows real-time quantification of traces gases, Selected Ion Flow Tube Mass Spectrometry (SIFT-MS), was therefore utilised to determine its usefulness for the assay of terpenoid concentrations in basil and pesto sauce headspace. Trace gas analysis was performed using the NO(+) precursor ion which minimised interference from other compounds. Character-impacting compound concentration was measured in basil headspace with good reproducibility and statistically significant differences were observed between cultivars. Quantification of linalool in pesto sauce headspace proved more difficult due to the presence of interfering compounds. This was resolved by careful selection of reaction product ions which allowed us to detect differences between various commercial brands of pesto. We conclude that SIFT-MS may be a valid tool for the fast and reproducible analysis of flavourant terpenoids in basil and basil-derived foodstuffs.

  18. Secondgen. Traiettorie di vita di giovani figli della migrazione. Il contributo della narrazione alla ricerca in contesti informali

    Directory of Open Access Journals (Sweden)

    Silvia Randino

    2012-04-01

    Full Text Available Il lavoro di cui si rende conto nel presente articolo è parte del progetto di ricerca "Second generations: migration processes and mechanisms of integration among foreigners and Italians (1950-2010", finanziato dalla Regione Piemonte e a cui partecipa l'Associazione Gruppo Abele Onlus. Il Centro studi del Gruppo Abele, insieme al Piano Giovani (attività dell'Associazione che lavora in contesti educativi formali ed informali, partecipa alla ricerca focalizzando l'attenzione sulla migrazione d'origine straniera degli ultimi anni, in particolare sulle seconde generazioni. Interlocutori principali sono, infatti, i ragazzi immigrati e figli della migrazione intercettati attraverso le attività di educativa di strada proposte dagli educatori e mediatori culturali del Gruppo Abele in alcuni giardini pubblici della città di Torino. Il nostro obiettivo specifico è quello di provare a ricostruire i percorsi e i progetti di vita, le carriere scolastiche, lavorative, familiari e sociali dei ragazzi che hanno vissuto un'esperienza di migrazione (direttamente o della propria famiglia, prestando attenzione ai fattori che influenzano le traiettorie dei ragazzi e delle ragazze incontrati.

  19. The LapG protein plays a role in Pseudomonas aeruginosa biofilm formation by controlling the presence of the CdrA adhesin on the cell surface

    DEFF Research Database (Denmark)

    Rybtke, Morten; Berthelsen, Jens; Yang, Liang

    2015-01-01

    knockout mutants provided evidence that the CdrA adhesin is a target of LapG in P. aeruginosa. A wspF lapG double mutant was hyper-aggregating and hyper biofilm forming, whereas a wspF lapG cdrA triple mutant lost these phenotypes. In addition, western blot detection of CdrA in culture supernatants...

  20. LAPS Lidar Measurements at the ARM Alaska Northslope Site (Support to FIRE Project)

    Science.gov (United States)

    Philbrick, C. Russell; Lysak, Daniel B., Jr.; Petach, Tomas M.; Esposito, Steven T.; Mulik, Karoline R.

    1998-01-01

    This report consists of data summaries of the results obtained during the May 1998 measurement period at Barrow Alaska. This report does not contain any data interpretation or analysis of the results which will follow this activity. This report is forwarded with a data set on magnetic media which contains the reduced data from the LAPS lidar in 15 minute intervals. The data was obtained during the period 15-30 May 1998. The measurement period overlapped with several aircraft flights conducted by NASA as part of the FIRE project. The report contains a summary list of the data obtained plus figures that have been prepared to help visualize the measurement periods. The order of the presentation is as follows: Section 1. A copy of the Statement of Work for the planned activity of the second measurement period at the ARM Northslope site is provided. Section 2. A list of the data collection periods shows the number of one minute data records stored during each hour of operation and the corresponding size (Mbytes) of the one hour data folders. The folder and file names are composed from the year, month, day, hour and minute. The date/time information is given in UTC for easier comparison with other data sets. Section 3. A set of 4 comparisons between the LAPS lidar results and the sondes released by the ARM scientists from a location nearby the lidar. The lidar results show the +/- 1 sigma statistical error on each of the independent 75 m altitude bins of the data. This set of 4 comparisons was used to set and validate the calibration value which was then used for the complete data set. Section 4. A set of false color figures with up to 10 hours of specific humidity measurements are shown in each graph. Two days of measurements are shown on each page. These plots are crude representations of the data and permit a survey which indicates when the clouds were very low or where interesting events may occur in the results. These plots are prepared using the real time sequence

  1. A feasibility study for experimentally determining dynamic force distribution in a lap joint

    Energy Technology Data Exchange (ETDEWEB)

    Mayes, Randall Lee [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2013-11-01

    Developing constitutive models of the physics in mechanical joints is currently stymied by inability to measure forces and displacements within the joint. The current state of the art estimates whole joint stiffness and energy loss per cycle from external measured force input and one or two acceleration responses. To validate constitutive models beyond this state requires a measurement of the distributed forces and displacements at the joint interface. Unfortunately, introducing measurement devices at the interface completely disrupts the desired physics. A feasibility study is presented for a non-intrusive method of solving for the interface dynamic forces from an inverse problem using full field measured responses. The responses come from the viewable surface of a beam. The noise levels associated with digital image correlation and continuous scanning laser Doppler velocimetry are evaluated from typical beam experiments. Two inverse problems are simulated. One utilizes the extended Sum of Weighted Accelerations Technique (SWAT). The second is a new approach dubbed the method of truncated orthogonal forces. These methods are much more robust if the contact patch geometry is well identified. Various approaches to identifying the contact patch are investigated, including ion marker tracking, Prussian blue and ultrasonic measurements. A typical experiment is conceived for a beam which has a lap joint at one end with a single bolt connecting it to another identical beam. In a virtual test using the beam finite element analysis, it appears that the SWAT inverse method requires evaluation of too many coefficients to adequately identify the force distribution to be viable. However, the method of truncated orthogonal forces appears viable with current digital image correlation (and probably other) imaging techniques.

  2. The City of Whitehorse local action plan (LAP) to reduce energy and greenhouse gas emissions for city operations and the community

    Energy Technology Data Exchange (ETDEWEB)

    Brown, G.; Crist, B.; Hnatiuk, D.; Schweiger, S.; Tuck, W.; Turner, J.; White, G. [City of Whitehorse, YT (Canada)

    2004-02-01

    The City of Whitehorse has created a Local Action Plan (LAP) within its community to reduce energy consumption and greenhouse gas emissions while stimulating the local economy. The city hired a Climate Change Coordinator in 1995 to initiative the five-step Partners for Climate Protection (PCP) program organized through the Federation of Canadian Municipalities. The five milestones of the PCP are to: (1) profile energy use and emissions from city and community-based sources, (2) establish reduction targets for city operations and the community, (3) develop and finalize a LAP that reduces energy use and emissions, (4) implement the LAP, and (5) monitor, verify and report greenhouse gas emissions. The economic benefits of implementing the LAP include: energy costs can be reduced by improving energy efficiency of city buildings, water and sewage systems, and vehicle fleet; local economic development can be stimulated by implementing new technologies and improving existing infrastructure; the need for road expansion can be reduced when peak vehicle traffic is reduced; and, tourism can preserve a viable downtown and improve the local economy. The social and health benefits of implementing the LAP include: community leadership; development of a more liveable community; reduced traffic congestion and increased mobility; preserved green spaces; increase public awareness of climate change; improved air quality; improved health; and, contribution to sustainable development. 31 refs., 6 tabs., 10 figs., 8 appendices.

  3. Lap shear strength of selected adhesives (epoxy, varnish, B-stage glass cloth) in liquid nitrogen and at room temperature

    Energy Technology Data Exchange (ETDEWEB)

    Froelich, K.J.; Fitzpatrick, C.M.

    1976-12-01

    The adhesives included several epoxy resins, a varnish, and a B-stage glass cloth (a partially cured resin in a fiberglass cloth matrix). Several parameters critical to bond strength were varied: adhesive and adherend differences, surface preparation, coupling agents, glass cloth, epoxy thickness, fillers, and bonding pressure and temperature. The highest lap shear strengths were obtained with the B-shear glass cloth at both liquid nitrogen and room temperatures with values of approximately 20 MPa (3000 psi) and approximately 25.5 MPa (3700 psi) respectively.

  4. Toxicity of TNT Wastewaters to Aquatic Organisms. Volume 3. Chronic Toxicity of LAP Wastewater and 2,4,6-Trinitrotoluene.

    Science.gov (United States)

    1985-05-01

    3 Manganese ɘ.02 - 7 (0.02 - 4 ɘ.01 - 3 * Selenium ɘ.01 - 6 ɘ.01 - 4 (0.01 - 3 Silver ɘ.03 - 7 ɘ.06 - 4 ɘ.005 - 3 Zinc 0.04 ɘ.01-0.06 3...S. .. . . S S S . -. . . . . . .’k".." -N . In addition to hatchability and mortality, records of deformities and total lengths and weights...None- theless, data on egg hatchability and fry survival from tests performed on TNT and LAP water are shown in Tables 4 and 5, respectively. Table 4

  5. Dal materiale all’immateriale. Verso un approccio sostenibile alla gestione nel contesto glocale / From material to immaterial: towards a sustainable approach to management in the glocal context

    Directory of Open Access Journals (Sweden)

    Mara Cerquetti

    2015-02-01

    Full Text Available Il saggio ripercorre le principali tappe del dibattito internazionale che negli ultimi anni ha condotto ad una nozione di cultural heritage aperta e dinamica, volta al superamento del dualismo tra materiale e immateriale e attenta al ruolo delle comunità locali nei processi di riconoscimento, tutela e valorizzazione del patrimonio stesso. Dopo aver preso in esame l’apporto degli studi giuridici, con specifico riferimento al contesto italiano, si analizza il contributo delle scienze sociali, soprattutto manageriali, particolarmente sensibili al tema della sostenibilità delle politiche e delle azioni finalizzate alla valorizzazione del patrimonio culturale materiale e immateriale anche attraverso l’applicazione di strumenti partecipativi. In quest’ottica, riconoscendo un ruolo centrale alla governance e alla collaborazione tra attori pubblici e privati che operano in un medesimo contesto, si porta infine l’attenzione sugli ecomusei, come caso esemplare dell’“immateriale che vive nella materialità”, evidenziando i nodi problematici che emergono dall’analisi della realtà italiana e suggerendo possibili linee di ricerca future.   The paper traces the main steps of the international debate that during the last years lead to an open and dynamic notion of cultural heritage, overcoming the dualism between tangible and intangible and considering the role of local communities in the processes of heritage recognition, safeguarding and enhancement. After examining the contribution of legal studies, above all in Italy, the approach of social sciences is analysed, focusing on management. These studies have explored the sustainability of policies and actions towards tangible and intangible cultural heritage enhancement, also through the application of participatory tools. In this perspective, governance and collaboration among different actors working in the same context gain a central role. Finally, the attention is focused on eco

  6. La partecipazione dei fedeli laici alla vita pubblica. Testimonianza cristiana, etica pubblica e bene comune nell’insegnamento di Benedetto XVI

    Directory of Open Access Journals (Sweden)

    Fabio Franceschi

    2011-11-01

    Full Text Available Versione riveduta e ampliata, nel testo e nell’apparato bibliografico, della relazione presentata con il titolo “L’impegno dei fedeli laici nella vita pubblica tra responsabilità propria, libertà e dovere di obbedienza al magistero. L’insegnamento di Benedetto XVI” al Convegno di studi “Il fedele laico: realtà e prospettive”, organizzato dalla Pontificia Università della Santa Croce (7-8 aprile 2011. Il contributo è destinato alla pubblicazione negli Atti del Convegno.SOMMARIO: 1. Considerazioni introduttive. Natura essenzialmente laicale della responsabilità politica - 2. L’intervento della Chiesa nel dibattito pubblico su questioni inerenti alla vita sociale e politica. I principi c.d. non negoziabili - 3. Fondamentale libertà dei fedeli rispetto alle indicazioni della gerarchia in materia temporale – 4. La funzione di orientamento dei pastori della comunità ecclesiale e i confini dell’intervento della stessa – 5. I limiti alla libertà dei fedeli in materia temporale: il rapporto tra libertà e verità e la salvaguardia delle esigenze etiche fondamentali e irrinunciabili per il bene comune e della società – 6. Benedetto XVI e l’invito a una nuova generazione di cattolici impegnati in politica. La difesa della centralità della persona umana come compito primario dei credenti impegnati nel governo della città terrena– 7. (segue L’impegno a favore della promozione di un concetto positivo di laicità, aperto alla Trascendenza − 8. (segue La politica come forma singolare di realizzazione della carità – 9. (segue La dottrina sociale della Chiesa come strumento di formazione essenziale e guida sicura per i fedeli laici impegnati nell’ambito socio-politico – 10. Considerazioni conclusive. Doveri, rispettivi, dello Stato e della Chiesa affinché si conservino, o se necessario si creino le condizioni esterne idonee e necessarie allo svolgimento dei compiti dei christifideles laici nella polis.

  7. Three-dimensional finite element analyses of the local mechanical behavior of riveted lap joints

    Science.gov (United States)

    Iyer, Kaushik Arjunan

    Three-dimensional elastic-plastic finite element models of single and double rivet-row lap joints have been developed to evaluate local distortions and the mechanics of airframe-type 7075-T6 aluminum alloy riveted assemblies. Loading induced distortion features such as the excess assembly compliance, rivet tilt, local in- and out-of-plane slips and stress concentration factors are evaluated as functions of rivet countersinking, rivet material and friction coefficient. Computed features are examined to identify alterations in the proportions of in-plane and out-of-plane load transmission across rivet-panel interfaces and isolate global and lower-order effects present in the complex response of these multi-body assemblies. Analytical procedures are validated by comparing calculated and measured values of excess assembly compliance and local panel bending. Direct out-of-plane load transmission between the rivet heads and panels affects global deformation features such as remote panel bending and local features such as the panel stress concentration factor. The increase in stress concentration due to panel bending is self-limiting owing to decreasing in-plane load bearing with increasing rivet tilt, which is a composite reflection of the basic rivet deformation modes of shear and rotation. Calculations have also been performed to define approximate steady-state fretting fatigue conditions that lead to crack initiation at a panel hole surface in single and double rivet-row assemblies for countersunk and non-countersunk rivets. These account for and isolate effects of interference and clamping forces on fatigue performance by comparing computed circumferential variations of bulk residual stresses, cyclic stress range and mean stress. With interference, a non-countersunk assembly is shown to be as prone to crack initiation as a countersunk assembly. Frictional work due to fretting is evaluated and the physical location of fretting fatigue crack initiation is predicted by

  8. Strengths of composite-to-metal double-lap bolted joints

    Science.gov (United States)

    Sun, Hsien-Tang

    1998-12-01

    A three-dimensional analysis was proposed to study the through-the-thickness clamping effect on the bearing failure of double-lap bolted laminated composite joints. Experiments were first performed to characterize the material response due to bearing failure in composite bolted joints with and without lateral clamp-up supports. Composite plates made of T800H/3900-2 graphite/epoxy were selected in the tests, and various washer sizes and clamping forces were used in the study. The clamping force in the bolt was found to vary with the applied load, and may increase significantly due to a sudden through-the-thickness expansion of the laminate under the washers where bearing failure occurred. Experiments showed that the joint strength and response can be significantly affected by the bolt clamp-up, and the bolt bearing failure is a 3-D phenomenon. In order to facilitate the use of the proposed model with the ABAQUS code, an interface module 3DBOLT was developed. In order to reinforce the incompressibility condition in calculations for bearing-damaged material predicted by the model, the condition was imposed through a penalty method in the frame work of finite element analyses. The module provides a user-friendly input deck, generates automatically a joint mesh, and produces outputs and graphics for displaying the stresses, strains, and deformations of the joints and for simulating the failure progression in joints during loading. Extensive comparisons were made between the test data and model predictions. Overall, the model predicts both the failure load and response of bolted composite joints very well for various clamping forces and washer sizes. The model also predicted very well for joints failed in net-tension and shear-out modes. The predicted bolt clamp-up load as a function of the applied load agreed also very well with the data, which validates that the proposed incompressibility assumption for bearing-damaged material. Based on the model, a parametric study

  9. Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing.

    Science.gov (United States)

    Villegas, Irene F; Palardy, Genevieve

    2016-02-11

    This paper presents a novel straightforward method for ultrasonic welding of thermoplastic-composite coupons in optimum processing conditions. The ultrasonic welding process described in this paper is based on three main pillars. Firstly, flat energy directors are used for preferential heat generation at the joining interface during the welding process. A flat energy director is a neat thermoplastic resin film that is placed between the parts to be joined prior to the welding process and heats up preferentially owing to its lower compressive stiffness relative to the composite substrates. Consequently, flat energy directors provide a simple solution that does not require molding of resin protrusions on the surfaces of the composite substrates, as opposed to ultrasonic welding of unreinforced plastics. Secondly, the process data provided by the ultrasonic welder is used to rapidly define the optimum welding parameters for any thermoplastic composite material combination. Thirdly, displacement control is used in the welding process to ensure consistent quality of the welded joints. According to this method, thermoplastic-composite flat coupons are individually welded in a single lap configuration. Mechanical testing of the welded coupons allows determining the apparent lap shear strength of the joints, which is one of the properties most commonly used to quantify the strength of thermoplastic composite welded joints.

  10. Identifying Combination of Friction Stir Welding Parameters to Maximize Strength of Lap Joints of AA2014-T6 Aluminum Alloy

    Directory of Open Access Journals (Sweden)

    Rajendrana C.

    2017-01-01

    Full Text Available AA2014 aluminum alloy (Al-Cu alloy has been widely utilized in fabrication of lightweight structures like aircraft structures, demanding high strength to weight ratio and good corrosion resistance. The fusion welding of these alloys will lead to solidification problems such as hot cracking. Friction stir welding is a new solid state welding process, in which the material being welded does not melt and recast. Lot of research works have been carried out by many researchers to optimize process parameters and establish empirical relationships to predict tensile strength of friction stir welded butt joints of aluminum alloys. However, very few investigations have been carried out on friction stir welded lap joints of aluminum alloys. Hence, in this investigation, an attempt has been made to optimize friction stir lap welding (FSLW parameters to attain maximum tensile strength using statistical tools such as design of experiment (DoE, analysis of variance (ANOVA, response graph and contour plots. By this method, it is found that maximum tensile shear fracture load of 12.76 kN can be achieved if a joint is made using tool rotational speed of 900 rpm, welding speed of 110 mm/min, tool shoulder diameter of 12 mm and tool tilt angle of 1.5°.

  11. In silico screening of novel inhibitors of M17 Leucine Amino Peptidase (LAP) of Plasmodium vivax as therapeutic candidate.

    Science.gov (United States)

    Rout, Subhashree; Mahapatra, Rajani Kanta

    2016-08-01

    M17 LAP (Leucine Amino Peptidase) plays an important role in the hydrolysis of amino acids essential for growth and development of Plasmodium vivax (Pv), the pathogen causing malaria. In this paper a homology model of PvLAP was generated using MODELLER v9.15. From different in-silico methods such as structure based, ligand based and de novo drug designing a total of 90 compounds were selected for docking studies. A final list of 10 compounds was prepared. The study reported the identification of 2-[(3-azaniumyl-2-hydroxy-4-phenylbutanoyl) amino]-4-methylpentanoate as the best inhibitor in terms of docking score and pharmacophoric features. The reliability of the binding mode of the inhibitor is confirmed by molecular dynamics (MD) simulation study with GROMACS software for a simulation time of 20ns in water environment. Finally, in silico ADMET analysis of the inhibitors using MedChem Designer v3 evaluated the drug likeness of the best hits to be considered for industrial pharmaceutical research.

  12. Sensitivity Analysis of the Artificial Neural Network Outputs in Friction Stir Lap Joining of Aluminum to Brass

    Directory of Open Access Journals (Sweden)

    Mohammad Hasan Shojaeefard

    2013-01-01

    Full Text Available Al-Mg and CuZn34 alloys were lap joined using friction stir welding while the aluminum alloy sheet was placed on the CuZn34. In addition, the mechanical properties of each sample were characterized using shear tests. Scanning electron microscopy (SEM and X-ray diffraction analysis were used to probe chemical compositions. An artificial neural network model was developed to simulate the correlation between the Friction Stir Lap Welding (FSLW parameters and mechanical properties. Subsequently, a sensitivity analysis was performed to investigate the effect of each input parameter on the output in terms of magnitude and direction. Four methods, namely, the “PaD” method, the “Weights” method, the “Profile” method, and the “backward stepwise” method, which can give the relative contribution and/or the contribution profile of the input factors, were compared. The PaD method, giving the most complete results, was found to be the most useful, followed by the Profile method that gave the contribution profile of the input variables.

  13. Transcriptional regulation of miR-146b by C/EBPβ LAP2 in esophageal cancer cells

    Energy Technology Data Exchange (ETDEWEB)

    Li, Junxia [Department of Medical Genetics, Third Military Medical University, Chongqing (China); Shan, Fabo [Department of Pathophysiology and High Altitude Physiology, Third Military Medical University, Chongqing (China); Xiong, Gang [Department of Thoracic and Cardiac Surgery, Southwest Hospital, Third Military Medical University, Chongqing (China); Wang, Ju-Ming; Wang, Wen-Lin [Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan (China); Xu, Xueqing, E-mail: buyi.chu@gmail.com [Molecular Biology Center, State Key Laboratory of Trauma, Burn, and Combined Injury, Research Institute of Surgery and Daping Hospital, Third Military Medical University, Chongqing (China); Bai, Yun, E-mail: baiyungene@gmail.com [Department of Medical Genetics, Third Military Medical University, Chongqing (China)

    2014-03-28

    Highlights: • MiR-146b promotes esophageal cancer cell proliferation. • MiR-146b inhibits esophageal cancer cell apoptosis. • C/EBPβ directly binds to miR-146b promoter conserved region. • MiR-146b is up-regulated by C/EBPβ LAP2 transcriptional activation. - Abstract: Recent clinical study indicated that up-regulation of miR-146b was associated with poor overall survival of patients in esophageal squamous cell carcinoma. However, the underlying mechanism of miR-146b dysregulation remains to be explored. Here we report that miR-146b promotes cell proliferation and inhibits cell apoptosis in esophageal cancer cell lines. Mechanismly, two C/EBPβ binding motifs are located in the miR-146b promoter conserved region. Among the three isoforms of C/EBPβ, C/EBPβ LAP2 positively regulated miR-146b expression and increases miR-146b levels in a dose-dependent manner through transcription activation of miR-146b gene. Together, these results suggest a miR-146b regulatory mechanism involving C/EBPβ, which may contribute to the up-regulation of miR-146b in esophageal squamous cell carcinoma.

  14. Microstructure characteristics and mechanical property of aluminum alloy/stainless steel lap joints fabricated by MIG welding-brazing process

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Hongtao, E-mail: hitzht@yahoo.com.cn [School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209 (China); Liu Jiakun [School of Materials Science and Engineering, Harbin Institute of Technology at Weihai, Weihai 264209 (China)

    2011-07-25

    Highlights: {yields} Wrought aluminum and stainless steel was joined with welding-brazing process. {yields} Effect of different layers on spreadability of molten filler metal was examined. {yields} Mechanical property of the joints with different heat inputs was investigated. {yields} Microstructure of the joints were also studied by OM, SEM and TEM. {yields} Phase composition was ascertained by diffraction spot and XRD analysis. - Abstract: Lap joints of aluminum alloy 2B50 and stainless steel 1Cr18Ni9Ti were welded by MIG welding-brazing method with 4043 Al-Si filler metal. The effect of aluminizing coating and galvanized zinc coating on fusion metal spreadability were studied. The aluminized coating had limited effect to promote weld surface appearance and obvious micro-cracks were found between the compound layer and the steel side. The fracture in tensile tests occurred at the interfacial layer of the weld with a low tensile strength about 60 MPa. Joints between aluminum alloy and galvanized steel had good surface appearances and the intermetallic compound in fusion zone region close to joint interface was Al{sub 4.5}FeSi. The thickness of the intermetallic compound layer varied from about 5 {mu}m to 15 {mu}m depending on the heat input and the highest tensile strength of lap joint could reached 193.6 MPa when the heat input is 0.846 KJ/cm.

  15. Determination of bulk diffusion lengths for angle-lapped semiconductor material via the scanning electron microscope: A theoretical analysis

    Science.gov (United States)

    Vonroos, O.

    1978-01-01

    A standard procedure for the determination of the minority carrier diffusion length by means of a scanning electron microscope (SEM) consists in scanning across an angle-lapped surface of a P-N junction and measuring the resultant short circuit current I sub sc as a function of beam position. A detailed analysis of the I sub sc originating from this configuration is presented. It is found that, for a point source excitation, the I sub sc depends very simply on x, the variable distance between the surface and the junction edge. The expression for the I sub sc of a planar junction device is well known. If d, the constant distance between the plane of the surface of the semiconductor and the junction edge in the expression for the I of a planar junction is merely replaced by x, the variable distance of the corresponding angle-lapped junction, an expression results which is correct to within a small fraction of a percent as long as the angle between the surfaces, 2 theta sub 1, is smaller than 10 deg.

  16. Copper Contamination of Self-Assembled Organic Monolayer Modified Silicon Surfaces Following a "Click" Reaction Characterized with LAPS and SPIM.

    Science.gov (United States)

    Wu, Fan; Zhang, De-Wen; Wang, Jian; Watkinson, Michael; Krause, Steffi

    2017-04-04

    A copper(I)-catalyzed azide alkyne cycloaddition (CuAAC) reaction combined with microcontact printing was used successfully to pattern alkyne-terminated self-assembled organic monolayer-modified silicon surfaces. Despite the absence of a copper peak in X-ray photoelectron spectra, copper contamination was found and visualized using light-addressable potentiometric sensors (LAPS) and scanning photo-induced impedance microscopy (SPIM) after the "click"-modified silicon surfaces were rinsed with hydrochloric acid (HCl) solution, which was frequently used to remove copper residues in the past. Even cleaning with an ethylenediaminetetraacetic acid (EDTA) solution did not remove the copper residue completely. Different strategies for avoiding copper contamination, including the use of bulky chelators for the copper(I) catalyst and rinsing with different reagents, were tested. Only cleaning of the silicon surfaces with an EDTA solution containing trifluoroacetic acid (TFA) after the click modification proved to be an effective method as confirmed by LAPS and SPIM results, which showed the expected potential shift due to the surface charge introduced by functional groups in the monolayer and allowed, for the first time, imaging the impedance of an organic monolayer.

  17. Hybrid laser-arc welding of galvanized high-strength steels in a gap-free lap-joint configuration

    Science.gov (United States)

    Yang, Shanglu

    In order to meet the industry demands for increased fuel efficiency and enhanced mechanical and structural performance of vehicles as well as provided excellent corrosion resistance, more and more galvanized advanced high-strength steels (AHSS) have been used to fabricate automobile parts such as panels, bumpers, and front rails. The automotive industry has shown tremendous interest in using laser welding to join galvanized dual phase steels because of lower heat input and higher welding speed. However, the laser welding process tends to become dramatically unstable in the presence of highly pressurized zinc vapor because of the low boiling point of zinc, around 906°C, compared to higher melting point of steel, over 1500°C. A large number of spatters are produced by expelling the liquid metal from the molten pool by the pressurized zinc vapor. Different weld defects such as blowholes and porosities appear in the welds. So far, limited information has been reported on welding of galvanized high strength dual-phase steels in a gap-free lap joint configuration. There is no open literature on the successful attainment of defect-free welds from the laser or hybrid welding of galvanized high-strength steels. To address the significant industry demand, in this study, different welding techniques and monitoring methods are used to study the features of the welding process of galvanized DP steels in a gap-free lap joint configuration. The current research covers: (i) a feasibility study on the welding of galvanized DP 980 steels in a lap joint configuration using gas tungsten arc welding (GTAW), laser welding, hybrid laser/arc welding with the common molten pool, laser welding with the assistance of GTAW preheating source and hybrid laser-variable polarity gas tungsten arc welding (Laser-VPGTAW) techniques (Chapter 2-4); (ii) a welding process monitoring of the welding techniques including the use of machine vision and acoustic emission technique (Chapter 5); (iii

  18. Introduzione alla fisica matematica

    CERN Document Server

    Persico, Enrico

    1960-01-01

    Cinematica dei mezzi continui, campi scalari e vettoriali ; funzioni armoniche, rappresentazioni confomi ; teoria dell'elasticità ; elettromagnetismo ; conduzione del calore (e diffusione) ; le equazioni a derivate parziali della fisica matematica ; cenni sulla teoria della relatività (ristretta).

  19. Jagatud kriisid / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2007-01-01

    IV "Ars Baltica" fotokunstitriennaal "Don't Worry - Be Curious" Kumus kuni 30. IX. Kuraatorid Dorothee Bienert, Kati Kivinen, Enrico Lunghi. Pikemalt Tellervo Kalleineni ja Oliver Kochta-Kalleineni projektist "Kaebuste koorid", Arturas Valiauga fotoseeriast "Kallaste vahel", Olga Tshernõsheva videost "Pidulik unenägu", Talleiv Taro Manumi (sünd. 1968 Jaapanis, elab Norras) fotoseeriast "Tervitused Ringnesist", Alexander Vaindorfi installatsioonist

  20. Dalla microfisica alla macrofisica

    CERN Document Server

    Caldirola, Piero

    1974-01-01

    La scoperta delle leggi che reggono il micromondo, effettuata dai creatori della fisica quantistica, rappresenta, assieme a quella della relatività, il maggior progresso compiuto dalla fisica nel XX secolo. Fino a poco fa però, malgrado i suoi successi, la meccanica quantistica era ancora mal compresa soprattutto nelle sue conseguenze filosofiche, e fonte di dibattiti senza fine. Spiaceva infatti, come spiace ancora, a molti il dover usare due linguaggi del tutto diversi per descrivere il micro- e il macromondo, per cui la fisica quantistica appariva come un incidente, uno stadio provvisorio nel cammino della scienza. Fu però la stessa ricerca a mettere in evidenza l'esistenza di sistemi macroscopici, quali l'elio liquido, i superconduttori, il laser, descrivibili solamente attraverso le leggi quantistiche. Si comprese allora essere queste un ponte gettato fra il micro- e il macromondo. Il libro vuole illustrare queste leggi in maniera non divulgativa ma concettuale, cioè limitando al minimo l'uso del for...

  1. EFFECT OF Z-PINS' DIAMETER, SPACING AND OVERLAP LENGTH ON CONNECTING PERFORMANCE OF CMC SINGLE LAP JOINT

    Institute of Scientific and Technical Information of China (English)

    Yongqiang Tao; Guiqiong Jiao; Bo Wang; Yanjun Chang

    2008-01-01

    The effect of through-thickness reinforcement by composite pins (Z-pins) on the static tensile strength and failure mechanisms of the joints made from ceramic matrix composite (CMC) is investigated.Overlap length of the single lap joint is 15 mm,20 mm,23 mm,37 mm,and 60 mm,respectively.The experimcntal results indicate that the final failure modes of the joints can be divided into twó groups,(a) the bond-line stops debonding until crack encounters Z-pins;and then the adherends break at the location of Z-pins,when overlap length is more than 20 mm;(b) the bond-line detaches entirely and Z-pins are drawn from adherends,when overlap length is equal to 15 mm.A simple efficient computational approach is presented for analyzing the benefit of through-thickness pins for restricting failure in the single lap joints.Here,the mechanics problem is simplified by representing the effect of the pins by tractions acting on the fracture surfaces of the cracked bond-line.The tractions are prescribed as functions of the crack displacement,which are available in simple forms that summarize the complex deformations to a reasonable accuracy.The resulting model can be used to track the evolution of complete failure mechanisms,for example,bond-line initial delamination and ultimate failure associated with Z-pin pullout,ultimate failure of the adherends.The paper simulates connecting performance of the single lap joints with different Z-pins' diameter,spacing and overlap length;the numerical results agree with the experimental results;the numerical results indicate enlarging diameter and decreasing spacing of Z-pins are in favor of improving the connecting performance of the joints.By numerical analysis method,the critical overlap length that lies between two final failure modes is between 18 mm and 19 mm,when Z-pins' diameter and spacing are 0.4 ram,5 ram,respectively.

  2. Characterization of fatigue damage in adhesively bonded lap joints through dynamic, full-spectral interrogation of fiber Bragg grating sensors: 1. Experiments

    Science.gov (United States)

    Webb, S.; Shin, P.; Peters, K.; Zikry, M. A.; Stan, N.; Chadderdon, S.; Selfridge, R.; Schultz, S.

    2014-02-01

    In this study we measure the in situ response of a fiber Bragg grating (FBG) sensor embedded in the adhesive layer of a single composite lap joint, subjected to harmonic excitation after fatigue loading. After a fully reversed cyclic fatigue loading is applied to the composite lap joint, the full-spectral response of the sensor is interrogated at 100 kHz during two loading conditions: with and without an added harmonic excitation. The full-spectral information avoided dynamic measurement errors often experienced using conventional peak wavelength and edge filtering techniques. The short-time Fourier transform (STFT) is computed for the extracted peak wavelength information to reveal time-dependent frequencies and amplitudes of the dynamic FBG sensor response. The dynamic response of the FBG sensor indicated a transition to strong nonlinear dynamic behavior as fatigue-induced damage progressed. The ability to measure the dynamic response of the lap joint through sensors embedded in the adhesive layer can provide in situ monitoring of the lap joint condition.

  3. LAP6/POLYKETIDE SYNTHASE A and LAP5/POLYKETIDE SYNTHASE B Encode Hydroxyalkyl α-Pyrone Synthases Required for Pollen Development and Sporopollenin Biosynthesis in Arabidopsis thaliana[C][W][OA

    Science.gov (United States)

    Kim, Sung Soo; Grienenberger, Etienne; Lallemand, Benjamin; Colpitts, Che C.; Kim, Sun Young; Souza, Clarice de Azevedo; Geoffroy, Pierrette; Heintz, Dimitri; Krahn, Daniel; Kaiser, Markus; Kombrink, Erich; Heitz, Thierry; Suh, Dae-Yeon; Legrand, Michel; Douglas, Carl J.

    2010-01-01

    Plant type III polyketide synthases (PKSs) catalyze the condensation of malonyl-CoA units with various CoA ester starter molecules to generate a diverse array of natural products. The fatty acyl-CoA esters synthesized by Arabidopsis thaliana ACYL-COA SYNTHETASE5 (ACOS5) are key intermediates in the biosynthesis of sporopollenin, the major constituent of exine in the outer pollen wall. By coexpression analysis, we identified two Arabidopsis PKS genes, POLYKETIDE SYNTHASE A (PKSA) and PKSB (also known as LAP6 and LAP5, respectively) that are tightly coexpressed with ACOS5. Recombinant PKSA and PKSB proteins generated tri-and tetraketide α-pyrone compounds in vitro from a broad range of potential ACOS5-generated fatty acyl-CoA starter substrates by condensation with malonyl-CoA. Furthermore, substrate preference profile and kinetic analyses strongly suggested that in planta substrates for both enzymes are midchain- and ω-hydroxylated fatty acyl-CoAs (e.g., 12-hydroxyoctadecanoyl-CoA and 16-hydroxyhexadecanoyl-CoA), which are the products of sequential actions of anther-specific fatty acid hydroxylases and acyl-CoA synthetase. PKSA and PKSB are specifically and transiently expressed in tapetal cells during microspore development in Arabidopsis anthers. Mutants compromised in expression of the PKS genes displayed pollen exine layer defects, and a double pksa pksb mutant was completely male sterile, with no apparent exine. These results show that hydroxylated α-pyrone polyketide compounds generated by the sequential action of ACOS5 and PKSA/B are potential and previously unknown sporopollenin precursors. PMID:21193570

  4. Feasibility, safety, and preliminary efficacy of Low Amplitude Seizure Therapy (LAP-ST): A proof of concept clinical trial in man.

    Science.gov (United States)

    Youssef, Nagy A; Sidhom, Emad

    2017-11-01

    Current pulse amplitude used in clinical ECT may be higher than needed. Reducing pulse amplitude may improve focality of the electric field and thus cognitive adverse effects. Here we examine the feasibility, safety, and whether Low Pulse Amplitude Seizure Therapy (LAP-ST, 0.5-0.6A) minimizes cognitive adverse effects while retaining efficacy. Patients with treatment-resistant primary mood (depressive episodes) or psychotic disorders who were clinically indicated to undergo ECT were offered to be enrolled in an open-label study. The study consisted of a full acute course of LAP-ST under standard anesthesia and muscle relaxation. The primary outcome was feasibility of seizure induction. Clinical outcome measures were: time to reorientation (TRO), Mini Mental State Examination, Montgomery Aberg Depression Scale, and Brief Psychiatric Rating Scale, and Clinical Global Impression Scale. Twenty-two patients consented for enrollment in the study. LAP-ST was feasible, and all patients had seizures in the first session. Participants had a quick orientation with median TRO of 4.5min. Treatment was efficacious for both depressive and psychotic symptoms. Relatively small sample size, non-blinded, and no randomization was performed in this initial proof of concept study. This first human preliminary data of a full course of focal LAP-ST demonstrates that seizure induction is feasible. These results, although preliminary, suggest that the LAP-ST compared to the standard ECT techniques may result in less cognitive side effects, but comparable efficacy. Larger studies are needed to replicate these findings. Copyright © 2017 Elsevier B.V. All rights reserved.

  5. Ground settlement of Chek Lap Kok Airport, Hong Kong,detected by satellite synthetic aperture radar interferometry

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Satellite synthetic aperture radar (SAR) interferometry is used to investigate the slowly accumulating ground settlement at the new Chek Lap Kok Airport in Hong Kong. Most of the land occupied by the airport was reclaimed from the sea and therefore certain ground settlement in the area has been expected. A pair of ERS-2 SAR images spanning nearly a year is used in the study. The high spatial resolution (20 m× 20 m) ground settlement map derived indicates that the settlement that occurred in the area over the time period is as large as 50 mm. The SAR measurement results agree with the levelling measurements at some benchmarks in the area to well within 1 cm(rms error),and the overall correlation between the two types of results is 0.89. The paper presents some brief background of interferometric SAR, and outlines the data processing methods and results.

  6. Time-recursive computation and real-time parallel architectures, with application on the Modulated Lapped Transform

    Science.gov (United States)

    Frantzeskakis, Emmanuel N.; Baras, John S.; Liu, Kuo Juey R.

    1993-11-01

    In this paper, we establish an architectural framework for parallel time-recursive computation. We consider a class of linear operators that consists of the discrete time, time invariant, compactly supported, but otherwise arbitrary kernel functions. We specify the properties of the linear operators that can be implemented efficiently in a time-recursive way. Based on these properties, we develop a routine that produces a time-recursive architectural implementation for a given operator. This routine is instructive for the design of a CAD tool that will facilitate the architecture derivation. Using this background, we design an architecture for the Modulated Lapped Transform (commonly called Modified Discrete Cosine Transform), which has linear cost in operator counts.

  7. Lika vård, men inte för alla. En litteraturstudie om flyktingars erfarenheter av hälso- och sjukvård

    OpenAIRE

    Henriksson, Ida; Svensson, Susanne

    2014-01-01

    Bakgrund: Det finns 45 miljoner flyktingar i världen. Många flyktingar har svåra upplevelser bakom sig som kan påverka hälsan och de skattar sin hälsa som dålig. Flyktingar möter många hinder när de söker vård. Trots grundläggande rättigheter om bästa uppnåeliga hälsa för alla är vården för flyktingar godtycklig. Syfte: Syftet med litteraturstudien var att beskriva flyktingars erfarenheter av hälso-och sjukvård. Metod: Kvalitativa resultat ur sex kvalitativa och tre mixed-methodstudier kvalit...

  8. Sopravvivenza e dispersione della lepre comune (Lepus europaeus Pallas, 1778 in relazione alla densità di popolazione e alle caratteristiche ambientali

    Directory of Open Access Journals (Sweden)

    Francesca Pella

    2003-10-01

    Full Text Available La presente ricerca è stata effettuata con lo scopo di valutare la sopravvivenza di lepri autoctone non traslocate in relazione alle caratteristiche ambientali e alla densità di popolazione. Inoltre è stata analizzata la capacità delle lepri di colonizzare territori a bassa densità, al di fuori delle aree protette, al fine di ricavare indicazioni utili per una gestione della lepre basata sulla corretta pianificazione delle aree protette. Lo studio è stato effettuato dal gennaio del 1999 al luglio del 2001 in due Zone di Ripopolamento e Cattura della Pianura Padana, caratterizzate da colture a seminativi irrigui una (Vistarino e colture a seminativi asciutti l?altra (Portalbera. Per determinare la densità di popolazione sono stati effettuati, in primavera ed autunno, censimenti notturni da autovettura, con proiettore alogeno orientabile manualmente. Per analizzare la sopravvivenza, l?uso dello spazio e la dispersione sono state catturate, con reti a tramaglio, valutate (peso, sesso, classe d?età e condizioni sanitarie e radiomarcate 16 lepri a Vistarino e 20 a Portalbera. I censimenti hanno evidenziato una differenza tra le due aree nelle densità che sono risultate comprese tra gli 11 ed i 20 individui per km² a Vistarino e tra i 29 e gli 83 a Portalbera. La sopravvivenza media delle lepri radiomarcate è stata di 295,5 giorni (ES=43,2, considerando le aree cumulate, e la probabilità di sopravvivenza nel periodo di studio è risultata pari a 0,36 (ES=0,094. Nell?area di studio di Vistarino la sopravvivenza media è stata di 426,4 giorni (ES=61,6 e la probabilità di sopravvivenza di 0,67 (ES=0,12 mentre a Portalbera la sopravvivenza media era di 142,2 giorni (ES=13,9 con una probabilità di sopravvivenza di 0,00 (ES=0,00. La dimensione media dell?area vitale per tutte le lepri catturate in entrambe le aree è stata pari a 47,9 ha (ES=6,08; minimo=0,01; massimo=171,1 se calcolata con il metodo del Minimo Poligono Convesso, mentre era di

  9. Non amabam Litteras Graecas. Note sulla Testimonianza di Sant’Agostino come Discente del Greco Antico Rivisitata alla Luce della Second Language Acquisition

    Directory of Open Access Journals (Sweden)

    Marco Ricucci

    2015-10-01

    Full Text Available In his 'Confessions', Saint Augustine provides a remarkable account of his experience as a learner of ancient Greek. After an outline of Saint Augustine’s testimony in the context of the history of education, Saint Augustine’s statements will be investigated according to the Second Language Acquisition theory of the applied linguist Stephen D. Krashen. Nelle 'Confessioni', sant’Agostino fornisce un celebre resoconto della sua esperienza di apprendente del greco antico. Dopo aver tratteggiato la testimonianza del vescovo nel contesto della storia dell’istruzione, le affermazioni di sant’Agostino vengono indagate alla luce della teoria dell’apprendimento di una lingua seconda, formulata dal linguista applicato americano Stephen D. Krashen.

  10. Le “relazioni pericolose” tra libertà di espressione e libertà di religione: riflessioni alla luce del principio di laicità

    Directory of Open Access Journals (Sweden)

    Carmela Salazar

    2011-03-01

    Full Text Available Lo scritto riprende, ampliandoli, i contenuti del saggio intitolato I “destini incrociati” della libertà di espressione e della libertà di religione: un’indagine sui conflitti e sulle sinergie tra gli artt. 19 e 21 Cost. attraverso il prisma del principio di laicità, in corso dipubblicazione sul n. 1/2008 di Quaderni di diritto e politica  ecclesiastica, editi da il Mulino.SOMMARIO: 1. Premessa -2. Libertà di espressione, libertà di religione, principio di laicità: un rapporto complesso - 3. Il conflitto tra le due libertà ed il diritto penale: la normativa sul c.d. hate speech - 4. ll vilipendio “smantellato”: l’evoluzione della giurisprudenza costituzionale sugli artt. 402 ss., c.p. - 5. Segue: le sentenze sul vilipendio della religione a raffronto con le decisioni sulla “laicizzazione” del giuramento e con le pronunce sull’obiezione di coscienza - 6. Segue: i delitti controle confessioni religiose nella l. n. 85 del 2006: una riforma “laica”? - 7. Tra conflitti e sinergie: la libertà di espressione religiosa del lavoratore, il nuovo diritto antidiscriminatorio e la disciplina delle “organizzazioni di tendenza” - 8. Segue: leeccezioni alla regola. La libertà di espressione degli insegnanti di religione nella scuola pubblica e la libertà di insegnamento dei docenti dell’Università cattolica - 9. La libertà di esprimere la propria appartenenza religiosa negli ordinamenti multiculturali: il porto dei simboli religiosi (ancora sull’affaire du foulard - 10. Libertà di espressione e libertà di religione tra sfera della libertà e sfera dell’autorità: le “esternazioni” delle confessioni (con particolare riguardo alla Chiesa cattolica.

  11. Cytokine profiles of LAP+CD4+Regulatory T cells in peripheral blood of colorectal carcinoma patients%结直肠癌患者外周血LAP+CD4+调节性T细胞的细胞因子谱分析

    Institute of Scientific and Technical Information of China (English)

    江志远; 钟武; 黄永红; 黄家豪; 廖存; 曹云飞

    2015-01-01

    目的 LAP+CD4+调节性T细胞(LAP+CD4+Treg)是新近发现的调节性T细胞亚型,在结直肠癌发病机制中的作用尚不完全清楚.本研究通过检测结直肠癌患者外周血中LAP+ CD4+ Treg的细胞因子谱,探讨其在结直肠癌发病机制中的作用.方法 收集2014-11-10-2015-02-01广西医科大学第一附属医院初次手术治疗的32例CRC患者的外周血,采用免疫磁珠法(magnetic cell sorting,MACS)分选出LAP+CD4+Treg细胞以及LAP-CD4+T细胞,并用流式细胞术(flow cytometry,FCM)检测其纯度;台盼蓝掺入法检测其存活率;应用液相芯片(luminex liquichip)、酶联免疫法(enzyme-linked immunosorbent,ELISA)检测两种细胞培养上清液所含相关细胞因子IL-2、IL-4、IL-10、IL-17、干扰素-γ(Interferon-γ,IFN-γ)和转化生长因子-β(transforming growth factor-β,TGF-β)的浓度.结果 MACS分选获得的LAP+CD4+Treg细胞纯度为(95.14±1.67)%,LAP-CD4+T细胞纯度为(95.32±2.41)%;台盼蓝掺入法结果显示,LAP+CD4+Treg细胞存活率为(92.54±2.31)%,分选出的CD4+T细胞后存活率为(93.24±2.41)%,说明分选前后细胞均保持较高存活率,t=1.856,P>0.08;液相芯片以及ELISA检测结果表明,LAP+CD4+Treg细胞较LAP-CD4+T细胞分泌更高浓度的IL-10分别为110.65±12.45和72.86±10.87,t=9.13,P<0.001;TGF-β为107.03±17.69和64.19±14.15,t=7.76,P<0.001.结论 CRC患者外周血LAP+ CD4+ Treg细胞可能通过分泌高浓度细胞免疫抑制因子IL-10、TGF-β参与了机体肿瘤的免疫逃逸机制.

  12. 聚晶金刚石研磨工艺及机理研究%Study on Lapping Technology and Mechanism of Polycrystalline Diamond

    Institute of Scientific and Technical Information of China (English)

    李嫚; 张弘

    2001-01-01

    研究了冷却液、法向载荷对聚晶金刚石(PCD)材料去除率及表面质量的影响;同时基于PCD材料的物理、化学性能,通过观察PCD研磨前、后的表面微观形貌,分析了PCD材料的研磨机理。%The influences of coolant and perpendicular load on the material removal rate and surface quality of the polycrystalline diamond are studied. Based on its physical and chemical properties, the lapping mechanism of the polycrystalline diamond is also analyzed through some observations for the surface micro-images before and after lapping.

  13. The LAPS Project : A live 1D Radiative-Convective Model to explore the possible climates of terrestrial planets and exoplanets.

    Science.gov (United States)

    Turbet, Martin; Forget, Francois; Schott, Cédric

    2016-10-01

    The LAPS (Live Atmospheres-of-Planets Simulator) is a live 1D version of the LMD Global Climate Model that provides an accelerated and interactive simulation of the climate of terrestrial planets and exoplanets.This tool was designed for students to explore the «Classical Habitable Zone», defined as the range of orbital distances within which a planet can maintain liquid water on its surface. The model faithfully reproduces both the inner edge and the outer edge limits of the Habitable Zone, and their dependencies to the type of star and the gas composition.Furthermore, it provides a "hands on" experiment by showing how the surface and atmospheric temperatures as well as the profile of water vapor evolve through time when the external forcing (insolation, star spectrum, ...) or the planet (quantity of CO2, initial amount of water reservoir, ...) is modified.The tool is available at http://laps.lmd.jussieu.fr/ .

  14. Characterization of waste of soda-lime glass generated from lapping process to reuse as filler in composite materials as thermal insulation

    Directory of Open Access Journals (Sweden)

    A. C. P. Galvão

    2015-09-01

    Full Text Available AbstractThe beneficiation plate process by soda-lime glass lapping in the glass industry generates, an untapped residue (waste. The waste of this material is sent to landfills, causing impact on the environment. This work aimed to characterize and evaluate the waste of soda-lime glass (GP lapping. After its acquisition, the GP was processed by grinding and sieving and further characterized by the chemical/mineralogical analysis (XRF, EDS and XRD, SEM morphology, particle size by laser diffraction, thermogravimetric analyses (TGA and DSC and thermophysical analyses. It was observed that the GP particles are irregular and micrometric with the predominant presence of Na, Si and Ca elements characteristic of amorphous soda-lime glass. The assessment of the chemical/mineralogical, morphological, thermophysical and thermal gravimetric characteristics of GP suggest its reuse as reinforcing fillers or filler in composite materials to obtain thermal insulation.

  15. Changes in proportion and function of peripheral CD4+LAP+ regulatory T cells in children with asthma%哮喘患儿外周血中CD4+LAP+调节性T细胞比例及功能变化研究

    Institute of Scientific and Technical Information of China (English)

    罗景华; 杨良安; 李国林

    2016-01-01

    ObjectiveTo investigate the changes in the proportion and function of peripheral CD4+LAP+regulatory T cells (CD4+LAP+Treg cells) in children with asthma, as well as the role of CD4+LAP+Treg cells in the pathogenesis of asthma.MethodsA total of 75 children who were diagnosed with asthma from March 2014 to September 2015 were enrolled as study subjects, and according to their conditions, they were divided into acute-stage asthma group (40 children) and remission-stage asthma group (35 patients). Another 30 children who underwent physical examination were enrolled as the healthy control group. Flow cytometry was used to determine the percentage of peripheral CD4+LAP+Treg cells, and [3H]-thymidine incorporation assay was performed to analyze the immunosuppression of CD4+LAP+Treg cells in each group.ResultsThe acute-stage asthma group showed significant reductions in the proportion of CD4+LAP+Treg cells compared with the remission-stage asthma group and the healthy control group (2.0%±1.0% vs 4.1%±2.4%/4.6%±3.0%;P<0.05). The acute-stage asthma group also showed a signiifcant reduction in the immunosuppression rate of CD4+LAP+Treg cells compared with the remission-stage asthma group and the healthy control group (21%±4% vs 55%±9%/62%±11%;P<0.05).ConclusionsIn children with asthma, the reduction in the number and inhibitory function of peripheral CD4+LAP+Treg cells may be involved in the pathogenesis of asthma.%目的:测定哮喘患儿外周血中CD4+LAP+调节性T细胞(CD4+LAP+Treg细胞)比例和功能的改变,探讨CD4+LAP+Treg细胞在哮喘发病中的作用。方法选取2014年3月至2015年9月确诊为哮喘的患儿75例为研究对象,依据病情将哮喘患儿分为哮喘急性期组(n=40)和哮喘缓解期组(n=35);另选取行健康体检儿童30例为健康对照组。采用流式细胞仪检测各组儿童外周血CD4+LAP+Treg细胞百分比;采用3H-脱氧胸腺嘧啶苷法检测各组CD4+LAP+Treg细胞的免疫抑制情

  16. The Fundamentals of Laparoscopic Surgery and LapVR evaluation metrics may not correlate with operative performance in a novice cohort

    Directory of Open Access Journals (Sweden)

    Sarah N. Steigerwald

    2015-12-01

    Full Text Available Background: Considerable resources have been invested in both low- and high-fidelity simulators in surgical training. The purpose of this study was to investigate if the Fundamentals of Laparoscopic Surgery (FLS, low-fidelity box trainer and LapVR (high-fidelity virtual reality training systems correlate with operative performance on the Global Operative Assessment of Laparoscopic Skills (GOALS global rating scale using a porcine cholecystectomy model in a novice surgical group with minimal laparoscopic experience. Methods: Fourteen postgraduate year 1 surgical residents with minimal laparoscopic experience performed tasks from the FLS program and the LapVR simulator as well as a live porcine laparoscopic cholecystectomy. Performance was evaluated using standardized FLS metrics, automatic computer evaluations, and a validated global rating scale. Results: Overall, FLS score did not show an association with GOALS global rating scale score on the porcine cholecystectomy. None of the five LapVR task scores were significantly associated with GOALS score on the porcine cholecystectomy. Conclusions: Neither the low-fidelity box trainer or the high-fidelity virtual simulator demonstrated significant correlation with GOALS operative scores. These findings offer caution against the use of these modalities for brief assessments of novice surgical trainees, especially for predictive or selection purposes.

  17. Coordinated Analysis of Two Graphite Grains from the CO3.0 LAP 031117 Meteorite: First Identification of a CO Nova Graphite and a Presolar Iron Sulfide Subgrain

    Science.gov (United States)

    Haenecour, Pierre; Floss, Christine; José, Jordi; Amari, Sachiko; Lodders, Katharina; Jadhav, Manavi; Wang, Alian; Gyngard, Frank

    2016-07-01

    Presolar grains constitute the remnants of stars that existed before the formation of the solar system. In addition to providing direct information on the materials from which the solar system formed, these grains provide ground-truth information for models of stellar evolution and nucleosynthesis. Here we report the in situ identification of two unique presolar graphite grains from the primitive meteorite LaPaz Icefield 031117. Based on these two graphite grains, we estimate a bulk presolar graphite abundance of {5}-3+7 ppm in this meteorite. One of the grains (LAP-141) is characterized by an enrichment in 12C and depletions in 33,34S, and contains a small iron sulfide subgrain, representing the first unambiguous identification of presolar iron sulfide. The other grain (LAP-149) is extremely 13C-rich and 15N-poor, with one of the lowest 12C/13C ratios observed among presolar grains. Comparison of its isotopic compositions with new stellar nucleosynthesis and dust condensation models indicates an origin in the ejecta of a low-mass CO nova. Grain LAP-149 is the first putative nova grain that quantitatively best matches nova model predictions, providing the first strong evidence for graphite condensation in nova ejecta. Our discovery confirms that CO nova graphite and presolar iron sulfide contributed to the original building blocks of the solar system.

  18. Experimental and Numerical Investigations of Fretting Fatigue Behavior for Steel Q235 Single-Lap Bolted Joints

    Directory of Open Access Journals (Sweden)

    Yazhou Xu

    2016-01-01

    Full Text Available This work aims to investigate the fretting fatigue life and failure mode of steel Q235B plates in single-lap bolted joints. Ten specimens were prepared and tested to fit the S-N curve. SEM (scanning electron microscope was then employed to observe fatigue crack surfaces and identify crack initiation, crack propagation, and transient fracture zones. Moreover, a FEM model was established to simulate the stress and displacement fields. The normal contact stress, tangential contact stress, and relative slipping displacement at the critical fretting zone were used to calculate FFD values and assess fretting fatigue crack initiation sites, which were in good agreement with SEM observations. Experimental results confirmed the fretting fatigue failure mode for these specimens. It was found that the crack initiation resulted from wear regions at the contact surfaces between plates, and fretting fatigue cracks occurred at a certain distance away from hole edges. The proposed FFD-N relationship is an alternative approach to evaluate fretting fatigue life of steel plates in bolted joints.

  19. Laser damage initiation and growth of antireflection coated S-FAP crystal surfaces prepared by pitch lap and magnetorheological finishing

    Energy Technology Data Exchange (ETDEWEB)

    Stolz, C J; Menapace, J A; Schaffers, K I; Bibeau, C; Thomas, M D; Griffin, A J

    2005-10-31

    Antireflection (AR) coatings typically damage at the interface between the substrate and coating. Therefore the substrate finishing technology can have an impact on the laser resistance of the coating. For this study, AR coatings were deposited on Yb:S-FAP [Yb{sup 3+}:Sr{sub 5}(PO{sub 4}){sub 3}F] crystals that received a final polish by both conventional pitch lap finishing as well as magnetorheological finishing (MRF). SEM images of the damage morphology reveals laser damage originates at scratches and at substrate coating interfacial absorbing defects. Previous damage stability tests on multilayer mirror coatings and bare surfaces revealed damage growth can occur at fluences below the initiation fluence. The results from this study suggest the opposite trend for AR coatings. Investigation of unstable HR and uncoated surface damage morphologies reveals significant radial cracking that is not apparent with AR damage due to AR delamination from the coated surface with few apparent cracks at the damage boundary. Damage stability tests show that coated Yb:S-FAP crystals can operate at 1057 nm at fluences around 20 J/cm{sup 2} at 10 ns; almost twice the initiation damage threshold.

  20. Microstructural Evolution and Migration Mechanism Study in a Eutectic Sn-37Pb Lap Joint Under High Current Density

    Science.gov (United States)

    Zhang, Zhihao; Cao, Huijun; Yang, Haifeng; Xiao, Yong; Li, Mingyu; Yu, Yuxi; Yao, Shun

    2017-08-01

    The microstructural evolution in eutectic Sn-37Pb solder under high current density seriously threatens the reliability of solder interconnections, but atomic electromigration has often been confused with thermomigration. In this paper, after decoupling the effect of the non-uniform temperature distribution in a Cu/Sn-37Pb/Cu lap joint from the current stress, the microstructural evolution was investigated under an average current density of 1.84 × 104 A cm-2 for 0-24 h. The decomposition and recombination of the Pb-rich phase occurred at the cathode and the anode, respectively. The corresponding migration mechanism was proposed from the viewpoint of energy and was explained by the interactions among the potential energies of ripening, electron wind force, and back stress. Our study may be helpful for understanding the migration mechanism and reliability of eutectic two-phase solder joints and provides supporting data for interpreting the acceleration tests of Sn-37Pb solder joints under electromigration.

  1. Non-destructive testing techniques based on nonlinear methods for assessment of debonding in single lap joints

    Science.gov (United States)

    Scarselli, G.; Ciampa, F.; Ginzburg, D.; Meo, M.

    2015-04-01

    Nonlinear ultrasonic non-destructive evaluation (NDE) methods can be used for the identification of defects within adhesive bonds as they rely on the detection of nonlinear elastic features for the evaluation of the bond strength. In this paper the nonlinear content of the structural response of a single lap joint subjected to ultrasonic harmonic excitation is both numerically and experimentally evaluated to identify and characterize the defects within the bonded region. Different metallic samples with the same geometry were experimentally tested in order to characterize the debonding between two plates by using two surface bonded piezoelectric transducers in pitch-catch mode. The dynamic response of the damaged samples acquired by the single receiver sensor showed the presence of higher harmonics (2nd and 3rd) and subharmonics of the fundamental frequencies. These nonlinear elastic phenomena are clearly due to nonlinear effects induced by the poor adhesion between the two plates. A new constitutive model aimed at representing the nonlinear material response generated by the interaction of the ultrasonic waves with the adhesive joint is also presented. Such a model is implemented in an explicit FE software and uses a nonlinear user defined traction-displacement relationship implemented by means of a cohesive material user model interface. The developed model is verified for the different geometrical and material configurations. Good agreement between the experimental and numerical nonlinear response showed that this model can be used as a simple and useful tool for understanding the quality of the adhesive joint.

  2. Examination of pulsed eddy current for inspection of second layer aircraft wing lap-joint structures using outlier detection methods

    Energy Technology Data Exchange (ETDEWEB)

    Butt, D.M., E-mail: Dennis.Butt@forces.gc.ca [Royal Military College of Canada, Dept. of Chemistry and Chemical Engineering, Kingston, Ontario (Canada); Underhill, P.R.; Krause, T.W., E-mail: Thomas.Krause@rmc.ca [Royal Military College of Canada, Dept. of Physics, Kingston, Ontario (Canada)

    2016-09-15

    Ageing aircraft are susceptible to fatigue cracks at bolt hole locations in multi-layer aluminum wing lap-joints due to cyclic loading conditions experienced during typical aircraft operation, Current inspection techniques require removal of fasteners to permit inspection of the second layer from within the bolt hole. Inspection from the top layer without fastener removal is desirable in order to minimize aircraft downtime while reducing the risk of collateral damage. The ability to detect second layer cracks without fastener removal has been demonstrated using a pulsed eddy current (PEC) technique. The technique utilizes a breakdown of the measured signal response into its principal components, each of which is multiplied by a representative factor known as a score. The reduced data set of scores, which represent the measured signal, are examined for outliers using cluster analysis methods in order to detect the presence of defects. However, the cluster analysis methodology is limited by the fact that a number of representative signals, obtained from fasteners where defects are not present, are required in order to perform classification of the data. Alternatively, blind outlier detection can be achieved without having to obtain representative defect-free signals, by using a modified smallest half-volume (MSHV) approach. Results obtained using this approach suggest that self-calibrating blind detection of cyclic fatigue cracks in second layer wing structures in the presence of ferrous fasteners is possible without prior knowledge of the sample under test and without the use of costly calibration standards. (author)

  3. Dalla teoria alla pratica nei modelli macroeconomici: l’eclettismo post-keynesiano (From theory to practice in macroeconomic models: the eclectic post-Keynesian

    Directory of Open Access Journals (Sweden)

    Ignazio Visco

    2012-04-01

    Full Text Available Questo saggio riesamina e discute il contributo di Franco Modigliani alla costruzione di modelli macroeconomici utilizzati per la previsione e per l’elaborazione delle politiche economiche. Come ha osservato Paul Samuelson, il lavoro teorico svolto da Modigliani è stato fondamentale per lo sviluppo del quadro d’insieme entro il quale è maturato l’“eclettismo post-keynesiano” della seconda metà del ventesimo secolo. Nel passaggio dalla teoria alla pratica vengono considerati due aspetti del lavoro di Modigliani: 1 l’impostazione sistemica che si incentra sulla relazione tra il breve e il lungo periodo; 2 il particolare riferimento al meccanismo di trasmissione della politica monetaria nell’utilizzo del modello macroeconomico per le politiche di stabilizzazione economica. Si discute, infine, brevemente ciò che oggi resta di questo contributo, anche in relazione ad alcune recenti proposte sulla costruzione di modelli macroeconomici.  This paper re-examines and discusses the contribution of Franco Modigliani in the construction of macroeconomic models used for prediction and for the development of economic policies. As noted by Paul Samuelson, the theoretical work done by Modigliani was instrumental in the development of the overall framework within which it is matured the " post-Keynesian eclecticism " in the second half of the twentieth century. In the transition from theory to practice are considered two aspects of the work of Modigliani: 1 the systemic approach that focuses on the relationship between the short and long term, and 2 the specific reference to the transmission mechanism of monetary policy in the use of macroeconomic model for policies of economic stabilization. Discuss, finally, briefly what remains today of this contribution, also in connection with some recent proposals on the construction of macroeconomic models.   JEL Codes: B22; C5; E12; E52Keywords: Modigliani, stabilizzazione economica

  4. Mechanical Behavior of Lithium-Ion Batteries and Fatigue Behavior of Ultrasonic Weld-Bonded Lap-Shear Specimens of Dissimilar Magnesium and Steel Sheets

    Science.gov (United States)

    Lai, Wei-Jen

    The mechanical behaviors of LiFePO4 battery cell and module specimens under in-plane constrained compression were investigated for simulations of battery cells, modules and packs under crush conditions. The experimental stress-strain curves were correlated to the deformation patterns of battery cell and module specimens. Analytical solutions were developed to estimate the buckling stresses and to provide a theoretical basis for future design of representative volume element cell and module specimens. A physical kinematics model for formation of kinks and shear bands in battery cells was developed to explain the deformation mechanism for layered battery cells under in-plane constrained compression. A small-scale module constrained punch indentation test was also conducted to benchmark the computational results. The computational results indicate that macro homogenized material models can be used to simulate battery modules under crush conditions. Fatigue behavior and failure modes of ultrasonic spot welds in lap-shear specimens of magnesium and steel sheets with and without adhesive were investigated. For ultrasonic spot welded lap-shear specimens, the failure mode changes from the partial nugget pullout mode under low-cycle loading conditions to the kinked crack failure mode under high-cycle loading conditions. For adhesive-bonded and weld-bonded lap-shear specimens, the test results show the near interface cohesive failure mode and the kinked crack failure mode under low-cycle and high-cycle loading conditions, respectively. Next, the analytical effective stress intensity factor solutions for main cracks in lap-shear specimens of three dissimilar sheets under plane strain conditions were developed and the solutions agreed well with the computational results. The analytical effective stress intensity factor solutions for kinked cracks were compared with the computational results at small kink lengths. The results indicate that the computational results approach to

  5. ELEMENTI PER UNA DESCRIZIONE DELLE COMPETENZE LINGUISTICHE NELLA LINGUA DI SCOLARIZZAZIONE NECESSARIE ALL’INSEGNAMENTO/APPRENDIMENTO DELLE SCIENZE ALLA FINE DELLA SCUOLA DELL’OBBLIGO

    Directory of Open Access Journals (Sweden)

    Helmut J. Vollmer

    2011-02-01

    Full Text Available In questo articolo si presenta una procedura che ha lo scopo di facilitare l’elaborazione dei programmi di insegnamento delle discipline scientifiche (biologia, fisica e chimica affrontando in modo esplicito le dimensioni discorsive e linguistiche di queste materie. Attraverso tappe successive, alle quali corrispondono degli inventari di riferimento, si procede dalle finalità educative dell’insegnamento scientifico alla identificazione degli elementi linguistici che è particolarmente importante sistematizzare in classe per esercitare le forme di discorso corrispondenti.     Items for a description of linguistic competence in the language of schooling necessary for teaching/learning science (at the end of compulsory education   This text presents a procedure to help in creating a curriculum for the teaching of science (biology, chemistry and physics which explicitly takes into account the discursive and linguistic dimensions of this subject area. It proceeds through successive stages, for which there are corresponding inventories of references, from the level of educational goals in the teaching of science to the identification of linguistic elements which it is particularly important to systematise in the classroom in order to manage the corresponding forms of discourse.

  6. Platone interprete di se stesso. «Menone» 98a alla luce di «Fedro» 249b-c

    Directory of Open Access Journals (Sweden)

    Lavinia Maggi

    2016-01-01

    Full Text Available La definizione di ἐπιστήμη come ὀρθὴ δόξα legata αἰτίας λογισμῷ, che compare in Menone 98a, presenta notevoli difficoltà interpretative non solo per quanto riguarda l’identificazione dell’αἰτία, ma anche per la possibilità o meno di scorgere sullo sfondo di tale enunciazione la teoria delle Idee (nella versione dei cosiddetti “dialoghi della maturità”. La questione può essere affrontata sia considerando il controverso passo all’interno del contesto più ampio del dialogo (dove compare per la prima volta la teoria dell’ἀνάμνησις, che alla teoria delle Idee è strettamente legata, ma anche in relazione a passi di altri dialoghi platonici, in particolare Fedro 249b-c: qui, dove l’epistemologia platonica si sviluppa secondo la teoria delle Idee, la volontà di Platone di alludere direttamente a Menone 98a sembra offrire una chiave interpretativa anche per quella precedente formulazione. La necessità di leggere ogni dialogo secondo le sue specificità (periodo di composizione, argomento principale, tipologia dei personaggi coinvolti non esclude infatti che, almeno in alcuni casi, Platone stabilisca dei collegamenti che consentano una continuità di lettura nel percorso di sviluppo del suo pensiero.

  7. [Surveillance system OKkio alla SALUTE: the role of primary school in the promotion of healthy life style--results in 2008].

    Science.gov (United States)

    Lamberti, A; Spinelli, A; Baglio, G; Nardone, P; Silani, M T; Mastantuono, E; Teti, S; Menzano, M T; Galeone, D

    2010-01-01

    In 2007 the Italian Ministry of Health/CCM promoted and funded the project "System of surveys of behavioral risks in ages 6-17", coordinated by the National Institute of Health. One of the aims of the project is the definition and implementation of a data collection system on the weight of primary school children, their eating habits, physical activity and school initiatives favoring the healthy growth of children, called "OKkio alla SALUTE". In 2008 the first survey of OKkio was conducted in 18 Italian regions. 45,590 third grade school children in 2610 classes participated. Information was collected from 2461 schools. The responses of the head teachers showed that 64% of the schools have a canteen, used by 70% of children. Only 12% of schools include the provision of a balanced mid-morning snack. Frequently there are educational activities related to physical activity and healthy eating that, in some cases, also involve the families of the children. 29% of the schools cannot guarantee two hours of physical activity as suggested by the school curriculum because of the lack or inadequacy of the gym or the structure of the timetables. The information gathered through the cooperation of school administrators, teachers and health workers, has helped to describe the major health educational activities of the school, that is confirmed to be the ideal venue for promoting healthy lifestyles in young people.

  8. Initiation and growth of multiple-site damage in the riveted lap joint of a curved stiffened fuselage panel: An experimental and analytical study

    Science.gov (United States)

    Ahmed, Abubaker Ali

    As part of the structural integrity research of the National Aging Aircraft Research Program, a comprehensive study on multiple-site damage (MSD) initiation and growth in a pristine lap-joint fuselage panel has been conducted. The curved stiffened fuselage panel was tested at the Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility located at the Federal Aviation Administration William J. Hughes Technical Center. A strain survey test was conducted to verify proper load application. The panel was then subjected to a fatigue test with constant-amplitude cyclic loading. The applied loading spectrum included underload marker cycles so that crack growth history could be reconstructed from post-test fractographic examinations. Crack formation and growth were monitored via nondestructive and high-magnification visual inspections. Strain gage measurements recorded during the strain survey tests indicated that the inner surface of the skin along the upper rivet row of the lap joint experienced high tensile stresses due to local bending. During the fatigue loading, cracks were detected by eddy-current inspections at multiple rivet holes along the upper rivet row. Through-thickness cracks were detected visually after about 80% of the fatigue life. Once MSD cracks from two adjacent rivet holes linked up, there was a quick deterioration in the structural integrity of the lap joint. The linkup resulted in a 2.87" (72.9-mm) lead fatigue crack that rapidly propagated across 12 rivet holes and crossed over into the next skin bay, at which stage the fatigue test was terminated. A post-fatigue residual strength test was then conducted by loading the panel quasi-statically up to final failure. The panel failed catastrophically when the crack extended instantaneously across three additional bays. Post-test fractographic examinations of the fracture surfaces in the lap joint of the fuselage panel were conducted to characterize subsurface crack initiation and

  9. Effects of Fusion Zone Size and Failure Mode on Peak Load and Energy Absorption of Advanced High Strength Steel Spot Welds under Lap Shear Loading Conditions

    Energy Technology Data Exchange (ETDEWEB)

    Sun, Xin; Stephens, Elizabeth V.; Khaleel, Mohammad A.

    2008-06-01

    This paper examines the effects of fusion zone size on failure modes, static strength and energy absorption of resistance spot welds (RSW) of advanced high strength steels (AHSS) under lap shear loading condition. DP800 and TRIP800 spot welds are considered. The main failure modes for spot welds are nugget pullout and interfacial fracture. Partial interfacial fracture is also observed. Static weld strength tests using lap shear samples were performed on the joint populations with various fusion zone sizes. The resulted peak load and energy absorption levels associated with each failure mode were studied for all the weld populations using statistical data analysis tools. The results in this study show that AHSS spot welds with conventionally required fusion zone size of can not produce nugget pullout mode for both the DP800 and TRIP800 welds under lap shear loading. Moreover, failure mode has strong influence on weld peak load and energy absorption for all the DP800 welds and the TRIP800 small welds: welds failed in pullout mode have statistically higher strength and energy absorption than those failed in interfacial fracture mode. For TRIP800 welds above the critical fusion zone level, the influence of weld failure modes on peak load and energy absorption diminishes. Scatter plots of peak load and energy absorption versus weld fusion zone size were then constructed, and the results indicate that fusion zone size is the most critical factor in weld quality in terms of peak load and energy absorption for both DP800 and TRIP800 spot welds.

  10. A finite element modelling methodology for the non-linear stiffness evaluation of adhesively bonded single lap-joints. Part 2, Novel shell mesh to minimise analysis time

    OpenAIRE

    Pearson, Ian T.; Mottram, J. Toby

    2012-01-01

    A new modelling methodology is presented that enables the stiffness of adhesively bonded single lap-joints to be included in the finite element analysis of whole vehicle bodies. This work was driven by the need to significantly reduce computing resources for vehicle analysis. To achieve this goal the adhesive bond line and adherends are modelled by a relatively ‘small’ number of shell elements to replace the usual solid element mesh for a reliable analysis. Previous work in Part 1 has provide...

  11. Clinical evaluation of the Serum CrossLaps One Step ELISA, a new assay measuring the serum concentration of bone-derived degradation products of type I collagen C-telopeptides

    DEFF Research Database (Denmark)

    Christgau, S; Rosenquist, C; Alexandersen, P

    1998-01-01

    The Serum CrossLaps One Step ELISA is a sandwich assay using two monoclonal antibodies specific for a beta-aspartate form of the epitope EKAHDGGR derived from the carboxy-terminal telopeptide region of type I collagen alpha1-chain. Our objective was to assess the clinical value of the Serum Cross......Laps assay for monitoring antiresorptive therapy in osteoporosis treatment. Samples obtained from postmenopausal women treated with different doses of cyclic or continuous hormone replacement therapy (HRT) with an estrogen analog (tibolone) or with a bisphosphonate (ibandronate) were measured in the Serum...

  12. SAR Image Despeckling Based on a Mixture of Gaussian Distributions with Local Parameters and Multiscale Edge Detection in Lapped Transform Domain

    Science.gov (United States)

    Hazarika, Deepika; Nath, Vijay Kumar; Bhuyan, Manbendra

    2016-12-01

    A new Lapped transform domain SAR image despeckling algorithm using a two-state Gaussian mixture probability density function that uses local parameters for the mixture model, is proposed. The use of lapped orthogonal transform (LOT) is motivated by its low computational complexity and robustness to oversmoothing. It is shown that the dyadic rearranged LOT coefficients of logarithmically transformed SAR images can be well approximated using two-state Gaussian mixture distribution compared to Laplacian, Gamma, generalized Gaussian and Cauchy distributions, based on the Kolmogorov-Smirnov (KS) goodness of fit test. The LOT coefficients of speckle noise are modeled using zero mean Gaussian distributions. A maximum a posteriori (MAP) estimator within Bayesian framework is developed using this proposed prior distribution and is used to restore the noisy LOT coefficients. The parameters of mixture distribution are estimated using the expectation-maximization algorithm. This paper presents a new technique to identify LOT modulus maxima which allows us to classify LOT coefficients into the edge and non edge coefficients. The classified edge coefficients are kept unmodified by the proposed algorithm whereas the noise-free estimates of non-edge coefficients are obtained using Bayesian MAP estimator developed using two state Gaussian mixture distribution with local parameters. Finally the proposed technique is combined with the cycle spinning scheme to further improve the despeckling performance. Experimental results show that the proposed method very efficiently reduces speckle in homogeneous regions while preserving more edge structures compared to some recent well known methods.

  13. Effects of process parameters on microstructure and mechanical properties of friction stir lap linear welded 6061 aluminum alloy to NZ30K magnesium alloy

    Directory of Open Access Journals (Sweden)

    Shuai Tan

    2017-03-01

    Full Text Available The microstructures and lap-shear behaviors of friction stir lap linear welded as-extruded 6061 Al alloy to as-cast Mg–3.0Nd–0.2Zn–0.7Zr (wt.% (NZ30K alloy joints were examined. Various tool rotation and travel speeds were adopted to prepare the joints. The analysis of temperature field indicates that the peak temperature for each sample can reach 450 °C, which exceeds the eutectic reaction temperatures of 437 °C and 450 °C according to the binary phase diagram of Al–Mg system. The fierce intermixing can be found at the interface between Al and Mg alloys, forming the intermetallic of Al3Mg2. Welds with the rotation speed of 900 rpm and travel speed of 120 mm/min display the highest tensile shear failure load of about 2.24 kN. The value was increased by 13% after the sample was heat treated at 400 °C for 0.5 h.

  14. Coordinated Analysis of Two Graphite Grains from the CO3.0 LAP 031117 Meteorite: First Identification of a CO Nova Graphite and a Presolar Iron Sulfide Subgrain

    CERN Document Server

    Haenecour, Pierre; Jose, Jordi; Amari, Sachiko; Lodders, Katharina; Jadhav, Manavi; Wang, Alian; Gyngard, Frank

    2016-01-01

    Presolar grains constitute remnants of stars that existed before the formation of the solar system. In addition to providing direct information on the materials from which the solar system formed, these grains provide ground-truth information for models of stellar evolution and nucleosynthesis. Here we report the in-situ identification of two unique presolar graphite grains from the primitive meteorite LaPaz Icefield 031117. Based on these two graphite grains, we estimate a bulk presolar graphite abundance of 5(-3)(+7) ppm in this meteorite. One of the grains (LAP-141) is characterized by an enrichment in 12C and depletions in 33,34S, and contains a small iron sulfide subgrain, representing the first unambiguous identification of presolar iron sulfide. The other grain (LAP-149) is extremely 13C-rich and 15N-poor, with one of the lowest 12C/13C ratios observed among presolar grains. Comparison of its isotopic compositions with new stellar nucleosynthesis and dust condensation models indicates an origin in the ...

  15. Erivajadustega laps / Inga Mutso

    Index Scriptorium Estoniae

    Mutso, Inga, 1959-

    2002-01-01

    Sept. 2000 - märts 2001 viidi Tartu Õppekeskuse, TPÜ täiendkoolituse osakonna ja Geomeedia Erakooli eripedagoogikaalastel täiendusõppe kursustel osalenud pedagoogide seas läbi ankeetküsitlus. Uuringus selgus, et erivajadustega õpilaste integreerimist tavakooli takistab vajaliku väljaõppe saanud pedagoogide puudumine ja koolide mittevalmisolek

  16. A glorious, yet almost forgotten, mathematical theory, and some possibly new applications of it to physics; Una gloriosa ma quasi dimenticata teoria matematica e certe sue inedite applicazioni alla fisica

    Energy Technology Data Exchange (ETDEWEB)

    Lo Surdo, C. [ENEA, Divisione Fusione Centro Ricerche Frascati, Rome (Italy)

    2001-07-01

    Hardly the role and the importance of Classical-Invariant Theory is the history of mathematics (say, between - 1850 and - 1920) can be fully appreciated by a nonspecialist. In this study, it was firstly purposed to provide a compact sketch of its foundations starting from (and keeping the framework of) some very basic ideas in the equation theory; and then, after reviewing a couple of classical examples, to illustrate a number of (presumably new) applications to physics, with special reference to constitutive relations in continuous material media. As a significant example of the latter type (amongst other ones), it shall be completely worked out the problem of the a priori structure of linear viscous-stress tensor in a magnetoplasma. [Italian] Non e' facile, da parte del non-specialista, apprezzare pienamente il ruolo e l'importanza della Teoria degli Invarianti Classici nella storia della matematica (diciamo all'incirca tra il 1850 e il 1920). In questo studio, il lettore trova anzitutto una rassegna, succinta ma largamente improntata alla generalita', dei suoi fondamenti a partire da poche idee di base della teoria delle equazioni, oltre ad un breve inquadramento storico e alla illustrazione di un paio di esempi classici. Seguono poi alcune applicazion - presuntivamente nuove - alla fisica matematica, con particolare riferimento alle relazioni costitutive in mezzi materiali continui. Come significativo esempio di applicazione di quest'ultimo tipo, e' infine completamente sviluppato il calcolo della struttura a priori del tensore di viscosita' lineare in un magnetoplasma.

  17. Modulated Lapped Biorthogonal Transform for Non-orthogonal Narrowband Interference Excision in Spread Spectrum Communications%基于调制重叠双正交变换的扩频通信非正交型窄带干扰抑制

    Institute of Scientific and Technical Information of China (English)

    朱丽平; 胡光锐; 赵海波; 朱义胜

    2005-01-01

    Traditional lapped transform domain excision techniques obtain good performance at the expense of increased processing delay. Extension of transform domain filtering techniques to the lapped biorthogonal transform domain can help solve the problem. By incorporating biorthogonality into the lapped transforms, more flexibility is obtained in the design of windows. Thus transform bases with better stopband attenuation can be generated by designing windows, but not by increasing the overlapping factor. In this paper, a new modulated lapped biorthogonal transform (MLBT) with optimized windows is introduced for efficient compression of multi-tone interfering signal energy. The bit error rate (BER) performance of the receiver employing the proposed MLBT excision technique is analyzed and compared with that of the lapped transform domain excision-based receivers. Simulation results demonstrate the improved performance and increased robustness of the proposed technique.

  18. 固结磨料研磨K9玻璃表面粗糙度模型%Model of Surface Roughness in Fixed Abrasive Lapping of K9 Glass

    Institute of Scientific and Technical Information of China (English)

    李军; 王慧敏; 王文泽; 黄建东; 朱永伟; 左敦稳

    2015-01-01

    Surface roughness model is an important basis for lapping process design and process parameter selection. K9 glass is one of the most widely applied optical materials. The model of surface roughness in lapping of K9 glass is established to improve processing efficiency and save production cost. Based on surface microstructure of the lapping pad, fixed abrasive lapping process is simplified, and the number of effective abrasives and the single abrasive depth of cutting into the workpiece are calculated. Combing the force equilibrium in lapping process, surface roughness model of fixed abrasive lapping of K9 glass is established. The model is verified by lapping of K9 glass with different abrasive particle sizes and concentrations, as well as different pressures. The results show that surface roughness of K9 glass is proportional to particle size and one-third power of lapping pressure, and inversely proportional to two-ninth power of the pad concentration. The changing trend of theoretical surface roughness values over abrasive particle sizes and pad concentrations as well as lapping pressures matches experimental trend. Surface roughness of K9 glass can be successfully predicted by the model in fixed abrasive lapping process, which can be used to guide the lapping process design and process parameters selection with high reliability.%表面粗糙度模型是研磨过程设计和工艺参数选择的重要依据,K9 玻璃是应用最广泛的光学材料之一.建立研磨 K9玻璃表面粗糙度模型有利于提高加工效率、节约生产成本.简化固结磨料研磨过程,基于研磨垫表面微结构,计算研磨过程中参与研磨的有效磨粒数和单颗磨粒切入工件深度,利用研磨过程中受力平衡,建立固结磨料研磨K9玻璃表面粗糙度模型.采用不同磨粒粒径和不同磨料浓度的固结磨料研磨垫以及不同压力研磨K9玻璃验证表面粗糙度模型.结果表明:固结磨料研磨K9玻璃

  19. Quando lo Spirito Paracleto sarà venuto, „convincerà il mondo quanto al peccato, alla giustizia e al giudizio” (Gv 16, 8

    Directory of Open Access Journals (Sweden)

    Tomasz Maria Dąbek

    2006-03-01

    Full Text Available La misericordia di Dio è immensa, ma Dio aspetta la risposta dell’uomo libero. Molto importante è il riconoscimento del peccato e la coscienza del bisogno dell’aiuto divino, della grazia. Lo Spirito Consolatore (παράκλητος, quando verrà, mostra di nuovo la necessità della conversione, della preparazione al giudizio finale. Il “mondo” nel Vangelo di Giovanni designa tutta la creatura, il mondo materiale, ma anche la gente opposta a Dio. Il „principe di questo mondo” (possibile un senso ironico – cf. Gv 12, 31; 14, 30; 16, 11 è il diavolo. Lo Spirito „convincerà il mondo quanto al peccato, alla giustizia e al giudizio”. Il verbo „convincerà” rende il termine greco ἐλέγξει (cf. Gv 8, 46; 1 Cor 14, 24, che nel Nuovo Testamento può significare anche „correggere” (cf. Mt 18, 15, „riprendere” (cf. Lc 3, 19; 1 Tm 5, 20; 2 Tm 4, 2; Tt 1, 13; 2, 15; Ebr 12, 5; Ap 3, 19, „condannare” (Gv 3, 20; Ef 5, 11. 13; Gc 2, 9; „confondere” (Tt 1, 9; Gd 15. Il nome παράκλησις spesso si traduce come „consolazione” (cf. At 4, 36; 2 Cor 1, 3s; 7, 4, ma anche „esortazione” (cf. At 13, 15; 15, 31; Rm 12, 8; 1 Tm 4, 13, che può essere forte e scoprire i difetti degli esortati. Il peccato (la bestemmia contro lo Spirito (cf. Mt 12, 31s; Mc 3, 28ss; Lc 12, 10 ha luogo quando l’uomo rifiuta l’ispirazione di Dio, rigetta la testimoniaza di Gesù confermata dai segni della potestà divina (cf. Gv 15, 22-25; Mc 1, 22. 27; Lc 4, 32. 36; Mt 7, 28. I peccatori devono convertirsi, vivere nella vita nuova con il Cristo risorto nella forza dello Spirito (cf. Rm 6, 1-7. 13s; 1 Cor 15, 17; 2 Cor 12, 21; Gal 5, 1; 1 Tm 5, 20. 22. 24s; 1 Gv 1, 8-10. Quella è l’unica via per ciascuno che vive nel mondo, nel quale ancora opera il diavolo, ma per il quale il Dio Padre ha mandato il suo Figlio come Salvatore (cf. 1 Gv 4, 14; 4, 9; Gv 3, 16.

  20. Long-term, repeated dose in vitro neurotoxicity of the glutamate receptor antagonist L-AP3, demonstrated in rat hippocampal slice cultures by using continuous propidium iodide incubation

    DEFF Research Database (Denmark)

    Kristensen, Bjarne W; Blaabjerg, Morten; Noraberg, Jens

    2007-01-01

    Most in vitro models are only used to assess short-term effects of test compounds. However, as demonstrated here, hippocampal slice cultures can be used for long-term studies. The test compound used was the metabotropic glutamate receptor antagonist, L(+)-2-amino-3-phosphonopropionic acid (L-AP3...

  1. SMS-laenud kontrolli alla

    Index Scriptorium Estoniae

    2008-01-01

    Reformierakonna fraktsiooni ettepanekust töötada kolme kuu jooksul välja SMS-laenude levikut piiravate õigusaktide pakett. Ilmunud ka Tallinna Teataja : Haabersti, Kristiine ja Põhja-Tallinn, mai 2008, lk. 4 ; Tallinna Teataja : Nõmme ja Mustamäe, mai 2008, lk. 4

  2. SMS-laenud kontrolli alla

    Index Scriptorium Estoniae

    2008-01-01

    Reformierakonna fraktsiooni ettepanekust töötada kolme kuu jooksul välja SMS-laenude levikut piiravate õigusaktide pakett. Ilmunud ka Eesti Teataja : Hiiumaa, Saaremaa, Läänemaa ja Pärnumaa, mai 2008, lk. 4 ; Eesti Teataja : Virumaa, mai 2008, lk. 4 ; Eesti Teataja : Harju- ja Raplamaa, mai 2008, lk. 4

  3. Kuidas kirjutada kunstiajalugu? / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2010-01-01

    14. ja 15. mail 2010 Tallinnas toimunud USA Clarki instituudi ja Eesti Kunstiakadeemia Kunstiteaduse Instituudi seminarist "Thinking Art History in East-Central Europe" (Arutlusi Kesk- ja Ida-Euroopa kunstiajaloo teemal)

  4. Kuidas kirjutada kunstiajalugu? / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2010-01-01

    14. ja 15. mail 2010 Tallinnas toimunud USA Clarki instituudi ja Eesti Kunstiakadeemia Kunstiteaduse Instituudi seminarist "Thinking Art History in East-Central Europe" (Arutlusi Kesk- ja Ida-Euroopa kunstiajaloo teemal)

  5. Plagiaatorist Saksa minister andis alla

    Index Scriptorium Estoniae

    2011-01-01

    Saksamaa kaitseminister Karl-Theodor zu Guttenberg astus plagiaadiskandaali tõttu tagasi. Karl Theodor zu Guttenberg on veebilehe GutenPlag Wikia andmetel pea sõna-sõnalt ilma viitamata teistelt autoritelt maha kirjutanud viiendiku oma doktoritööst

  6. Pluss ja miinus / Hendrik Alla

    Index Scriptorium Estoniae

    Alla, Hendrik, 1976-

    1998-01-01

    Jõuluteemalistest ja jõuluvanalistest arvutireklaamidest. Halb: MicroLink (idee: MicroLink, teostus: Division) 'Arreteeriti jõuluvana!', Assert (Limit Reklaam) 'Viktor (57), näärivana'. Parem: PCT (Snaiper) 'Sa ju lubasid...'.

  7. Pluss ja miinus / Hendrik Alla

    Index Scriptorium Estoniae

    Alla, Hendrik, 1976-

    1998-01-01

    Jõuluteemalistest ja jõuluvanalistest arvutireklaamidest. Halb: MicroLink (idee: MicroLink, teostus: Division) 'Arreteeriti jõuluvana!', Assert (Limit Reklaam) 'Viktor (57), näärivana'. Parem: PCT (Snaiper) 'Sa ju lubasid...'.

  8. Plagiaatorist Saksa minister andis alla

    Index Scriptorium Estoniae

    2011-01-01

    Saksamaa kaitseminister Karl-Theodor zu Guttenberg astus plagiaadiskandaali tõttu tagasi. Karl Theodor zu Guttenberg on veebilehe GutenPlag Wikia andmetel pea sõna-sõnalt ilma viitamata teistelt autoritelt maha kirjutanud viiendiku oma doktoritööst

  9. Prime osservazioni in tema di rappresentanza sindacale: dal protocollo del 31 maggio 2013 alla sentenza della Corte Costitu­zionale n. 231 del 2013

    Directory of Open Access Journals (Sweden)

    Marina Capobianco

    2013-07-01

    áti­cas divisiones averiguadas en los últimos años entre los sindicatos. El Protocolo se pone en perfecta línea de continuidad con el anterior Acuerdo Interconfederal del 28 junio del 2011, diferenciándose de ello, sin embargo, en algunas partes. Dentro de este escenario, se analiza la reciente pronunciación de la Corte Constitucional sobre la legitimidad constitucional del art. 19 del Estatuto de los Trabajadores hoy, recorriendo las etapas de progresiva afirmación de la nueva orientación jurisprudencial dirigida a encontrar soluciones de compromiso para poner punto final a la añosa cuestión de la representación "irrisorta", en el ámbito del vacío legislativo en materia sindical. Riassunto - L'Autore affronta lo spinoso tema della rappresentanza sindacale alla luce del­la stipulazione della recente Intesa recante indicazioni in tema di misurazione della rappresen­tatività, sottoscritta unitariamente dalle parti sociali per porre fine alle drammatiche divisioni verificatesi negli ultimi anni sul fronte endo-sindacale. Il Protocollo si pone in perfetta linea di continuità con il precedente Accordo Interconfederale del 28 giugno del 2011, differenziando­sene, tuttavia, su alcune parti. Entro tale scenario, si analizza la recente pronuncia della Con­sulta sulla legittimità costituzionale dell'art. 19 dello Statuto dei Lavoratori oggi, ripercorren­dosi le tappe di progressiva affermazione del nuovo orientamento giurisprudenziale volto a trovare soluzioni di compromesso per porre fine alla annosa questione della rappresentanza “irrisorta”, nell'ambito del vuoto legislativo in materia sindacale. Sommario – 1. L'Accordo del 31 maggio 2013 nel quadro dei previgenti accordi interconfe­derali – 2. Le nuove misure di rappresentatività – 3. L'efficacia soggettiva ed i criteri di votazio­ne - 4. La clausola di esigibilità e di tregua sindacale – 5. La portata e gli effetti del nuovo accordo – 6. La recente decisione della Consulta e le "soluzioni" al

  10. Geophysical surveys and velocimetric measures in the Cerreto di Spoleto (Perugia) area, aiming at a seismic microzoning; Indagini geofisiche e misure velocimetriche finalizzate alla microzonazione sismica dell'area di Cerreto di Spoleto (Perugia)

    Energy Technology Data Exchange (ETDEWEB)

    Bongiovanni, G.; Martino, S.; Paciello, A.; Verrubbi, V. [ENEA, Div. Caratterizzazione dell' Ambiente e del Territorio, Centro Ricerche Csaccia, S. Maria di Galeria, Rome (Italy)

    2001-07-01

    Geophysical prospectings and velocimetric measures, aiming at the seismic microzoning of Cerreto di Spoleto area, are presented. Starting from the data obtained by previous geological-geomechanical surveys, seismic-refraction prospectings were carried on in order to obtain a dynamic characterisation and a geometrical description both of soil and rock materials. The velocimetric measures were performed by temporary free-field arrays, recording both environmental noise and small-magnitude seismic events. The analysis of the obtained records is still in progress, in order to evaluate the local seismic wave amplification. [Italian] Vengono illustrate le indagini geofisiche e le misure velocimetriche condotte nell'area di Cerreto di Spoleto (PG) per la microzonazione sismica. In particolare, sulla base dei dati geologici e geomeccanici precedentemente acquisiti, sono state effettuate indagini di sismica a rifrazione che hanno portato alla caratterizzazione dinamica dei litotipi ed alla definizione delle loro geometrie. Le misure velometriche sono state condotte installando array temporanei in free-field per la registrazione di rumore ambientale ed eventi sismici di piccola magnitudo. E' in corso l'elaborazione delle registrazioni ottenute, finalizzata all'analisi degli effetti di amplificazione sismica locale.

  11. Regulation of adipocyte 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1 by CCAAT/enhancer-binding protein (C/EBP β isoforms, LIP and LAP.

    Directory of Open Access Journals (Sweden)

    Cristina L Esteves

    Full Text Available 11β-Hydroxysteroid dehydrogenase type 1 (11β-HSD1 catalyses intracellular regeneration of active glucocorticoids, notably in liver and adipose tissue. 11β-HSD1 is increased selectively in adipose tissue in human obesity, a change implicated in the pathogenesis of metabolic syndrome. With high fat (HF-feeding, adipose tissue 11β-HSD1 is down-regulated in mice, plausibly to counteract metabolic disease. Transcription of 11β-HSD1 is directly regulated by members of the CCAAT/enhancer binding protein (C/EBP family. Here we show that while total C/EBPβ in adipose tissue is unaltered by HF diet, the ratio of the C/EBPβ isoforms liver-enriched inhibitor protein (LIP and liver-enriched activator protein (LAP (C/EBPβ-LIP:LAP is increased in subcutaneous adipose. This may cause changes in 11β-HSD1 expression since genetically modified C/EBPβ((+/L mice, with increased C/EBPβ-LIP:LAP ratio, have decreased subcutaneous adipose 11β-HSD1 mRNA levels, whereas C/EBPβ(ΔuORF mice, with decreased C/EBPβ-LIP:LAP ratio, show increased subcutaneous adipose 11β-HSD1. C/EBPβ-LIP:LAP ratio is regulated by endoplasmic reticulum (ER stress and mTOR signalling, both of which are altered in obesity. In 3T3-L1 adipocytes, 11β-HSD1 mRNA levels were down-regulated following induction of ER stress by tunicamycin but were up-regulated following inhibition of mTOR by rapamycin. These data point to a central role for C/EBPβ and its processing to LIP and LAP in transcriptional regulation of 11β-HSD1 in adipose tissue. Down-regulation of 11β-HSD1 by increased C/EBPβ-LIP:LAP in adipocytes may be part of a nutrient-sensing mechanism counteracting nutritional stress generated by HF diet.

  12. Role of C/EBPβ-LAP and C/EBPβ-LIP in early adipogenic differentiation of human white adipose-derived progenitors and at later stages in immature adipocytes.

    Science.gov (United States)

    Lechner, Stefan; Mitterberger, Maria C; Mattesich, Monika; Zwerschke, Werner

    2013-01-01

    We investigated the role of the major isoforms of CCAAT enhancer binding protein β (C/EBPβ), C/EBPβ-LAP and C/EBPβ-LIP, in adipogenesis of human white adipose-derived stromal/progenitor cells (ASC). C/EBPβ gene expression was transiently induced early in adipogenesis. At later stages, in immature adipocytes, the C/EBPβ mRNA and protein levels declined. The C/EBPβ-LIP protein steady-state level decreased considerably stronger than the C/EBPβ-LAP level and the C/EBPβ-LIP half-life was significantly shorter than the C/EBPβ-LAP half-life. The turn-over of both C/EBPβ-isoforms was regulated by ubiquitin/proteasome-dependent degradation. These data suggest that the protein stability of the C/EBPβ-isoforms is differentially regulated in the course of adipogenesis and in immature adipocytes. Constitutive overexpression of C/EBPβ-LIP had antiadipogenic activity in human ASC. C/EBPβ-LAP, which promotes adipogenesis in mouse 3T3-L1 preadipocytes by directly activating expression of the adipogenic keyregulator PPARγ2, induced the expression of PPARγ2 and of the adipocyte differentiation gene product FABP4 in confluent ASC in the absence of adipogenic hormones. At later stages after hormone cocktail-induced adipogenesis, in immature adipocytes, constitutive overexpression of C/EBPβ-LAP led to reduced expression of PPARγ2 and FABP4, C/EBPα expression was downregulated and the expression of the adipocyte differentiation gene products adiponectin and leptin was impaired. These findings suggest that constitutive overexpression of C/EBPβ-LAP induces adipogenesis in human ASC and negatively regulates the expression of adipogenic regulators and certain adipocyte differentiation gene products in immature adipocytes. We conclude the regulation of both C/EBPβ gene expression and C/EBPβ-LIP and C/EBPβ-LAP protein turn-over plays an important role for the expression of adipogenic regulators and/or adipocyte differentiation genes in early adipogenic differentiation of

  13. 光学镜片平面行星式研磨加工关键技术研究%Key technologies of flat planetary lapping of optical lens

    Institute of Scientific and Technical Information of China (English)

    祁小苑; 李大琪; 陈勇; 鲁卫国

    2014-01-01

    在平面行星式研磨加工过程中,研磨盘磨损的均匀性与光学镜片的研磨质量有密切关系。通过对光学镜片在平面行星式研磨加工过程中的运动规律进行分析,建立了差动轮系条件下工件运动的轨迹和速度计算模型,开发了Matlab仿真程序。结合生产实际,对行星轮系条件下工件运动的轨迹和速度进行了仿真,确定了研磨机速比对研磨盘磨损均匀性的影响规律:当速比I1<-1.5时,镜片的运动轨迹在较短时间内遍布研磨盘各处,研磨盘得到均匀磨损,加工质量和加工效率较高。基于仿真结果,通过优化工艺参数,获得了厚度一致性小于0.002mm,平行度小于0.002mm的高质量光学镜片。%In the flat planetary lapping process ,the lapping quality of optical lens has close rela-tion with the uniformity of abrasion of lapping plate .In this paper ,the motion law of optical lens in the flat planetary lapping process was analyzed .The model of lens motion trajectory and lens motion velocity in the conditions of differential gear trains was set up .Besides ,the simulation program was developed with Matlab software .In addition ,combined with the actu-al production process ,the lens motion trajectory and lens motion velocity were simulated in the conditions of planetary gear train .T he influence law of lapping machine speed ratio on the uni-formity of abrasion of lapping plate was confirmed .When the speed radio I1 < -1 .5 ,the lap-ping plate is covered by the lens motion trajectory in short time and the abrasion of lapping plate is uniform .T herefore ,the lapping process has better quality and higher efficiency than before .Finally ,the high quality optical lens ,which consistency of lens thickness was better than 0 .002 mm and parallelism was better than 0 .002 mm ,was obtained by optimized process parameters based on the simulation result .

  14. Comparative study between 2D and 3D FEM techniques in single bolt, single lap, composite bolted joints for space structures

    Directory of Open Access Journals (Sweden)

    Calin-Dumitru COMAN

    2017-09-01

    Full Text Available Two-dimensional and three-dimensional finite element models have been developed to study the effects of bolt-hole clearance on the mechanical behavior of bolted composites (graphite/epoxy joints in space structures. The type of the studied joint was single bolt, single lap, and the geometry is a standard type for these kind of composite joints space structures. In this study, two approaches, 2D (linear analysis and 3D (nonlinear analysis were developed and the results were compared to numerical and experiment results from literature. The contact between the parts affecting the accuracy and efficiency of the models is detailed. The model’s capability to predict the three-dimensional effects such as secondary bending and through-thickness variations of the stress and stain tensor fields is presented.

  15. Analysis of the Side-Lap Effect on Full-Waveform LIDAR Data Acquisition for the Estimation of Forest Structure Variables

    Science.gov (United States)

    Crespo-Peremarch, P.; Ruiz, L. A.; Balaguer-Beser, A.; Estornell, J.

    2016-06-01

    LiDAR full-waveform provides a better description of the physical and forest vertical structure properties than discrete LiDAR since it registers the full wave that interacts with the canopy. In this paper, the effect of flight line side-lap is analysed on forest structure and canopy fuel variables estimations. Differences are related to pulse density changes between flight stripe side-lap areas, varying the point density between 2.65 m-2 and 33.77 m-2 in our study area. These differences modify metrics extracted from data and therefore variable values estimated from these metrics such as forest stand variables. In order to assess this effect, 64 pairwise samples were selected in adjacent areas with similar canopy structure, but having different point densities. Two parameters were tested and evaluated to minimise this effect: voxel size and voxel value assignation testing maximum, mean, median, mode, percentiles 90 and 95. Student's t-test or Wilcoxon test were used for the comparison of paired samples. Moreover, the absolute value of standardised paired samples was calculated to quantify dissimilarities. It was concluded that optimizing voxel size and voxel value assignation minimised the effect of point density variations and homogenised full-waveform metrics. Height/median ratio (HTMR) and Vertical distribution ratio (VDR) had the lowest variability between different densities, and Return waveform energy (RWE) reached the best improvement with respect to initial data, being the difference between standardised paired samples 1.28 before and 0.69 after modification.

  16. The communitary approach toward generation adequacy in restructured electricity systems; L'approccio comunitario alla adeguatezza della capacita' di generazione nei sistemi elettrici liberalizzati

    Energy Technology Data Exchange (ETDEWEB)

    Cassetta, Ernesto [LUISS Guido Carli Univ., Roma (Italy)

    2004-07-01

    specific regulatory measures. The question of whether or not to adopt any regulatory measures to ensure supply and demand long-term balance is simply left to Member States, which enjoy wide discretion in defining and implementing more effective measures. This implies that the aspects related to strategic conducts by generators and opportunistic behaviour between different Member States should be carefully considered. Also in this case, however, the communitary framework is still hesitant. [Italian] L'articolo approfondisce in chiave evolutiva le motivazioni alla base dell'intervento comunitario nella questione della adeguatezza della capacita' di generazione e le principali modifiche normative contenute nella Direttiva 2003/54/EC, nonche' quelle prospettate nella recente proposta di direttiva sulla tutela della sicurezza dell'offerta e degli investimenti in infrastrutture, al fine di offrire una prima valutazione dell'approccio comunitario e del possibile impatto delle stesse sui sistemi elettrici nazionali. I recenti interenti normativi testimoniano la rilevanza assunta dalla problematica dell'equilibrio fra domanda di energia e capacita' di generazione nel mantenimento dell'affidabilita' degli odierni sistemi elettrici europei. L'approccio comunitario e' tuttavia incerto: se da una parte e' confermata la superiorita' dei mercati dell'energia concorrenziali nell'assicurare un adeguato livello di risorse produttive, dall'altra, si accoglie la tendenza degli Stati membri ad un maggiore controllo pubblico degli investimenti e all'introduzione di misure regolatorie addizionali in una fase che nell'originario progetto comunitario doveva considerarsi priva di eccessivi pesi regolatori. L'adozione delle misure necessarie a garantire un adeguato equilibrio fra domanda di energia e capacita' di generazione disponibile e' dunque affidata agli Stati membri, ai quali le

  17. Application of FY-2E Satellite Data in the Three-Dimensional Cloud Analysis of Typhoon Based on LAPS%FY-2E 卫星资料在基于 LAPS 的台风三维云分析中的应用

    Institute of Scientific and Technical Information of China (English)

    韩成鸣; 李耀东; 史小康

    2014-01-01

    LAPS(Local Analysis and Prediction System)采用物理初值化与三维变分约束相结合的方法,通过融合多源观测资料,发挥各种资料的优势,分析得到较为客观的三维云场,并可改善数值模式初始场。将 FY-2E 卫星可见光反照率和红外亮温资料引入 LAPS,针对2014年6月登陆我国的台风“海贝思”,设计不同水平分辨率的同化试验,研究台风三维云结构和初始场的改善情况。结果表明:1) LAPS 云分析中引入卫星可见光反照率资料之后,总云量有显著的调整,能够较清晰地分辨出台风眼区、云墙和螺旋云带,卫星红外亮温资料在云顶高度的调整中发挥了重要作用,而且高分辨率的云分析结果有助于更好地分析出台风结构和强对流区域。2) LAPS 物理初值化技术将卫星资料中的云结构和微物理信息添加到初始场中,一定程度上调整了数值模式初始场中垂直速度、云水、云冰和水汽场等变量的分布,提高了模式初值质量,对模拟和预报台风系统将会产生一定的影响。%The FY-2E satellite visible albedo and infrared brightness temperature were adopted to LAPS (Local Analysis and Prediction System)in order to improve initial field quality in the typhoon“Haibeisi” simulation experiments. The results showed: 1)The total cloud cover magnitude presented significant adjustment and helped to clearly distinguish the field of typhoon eye, wall cloud and spiral band due to the application of satellite visible albedo to the cloud analysis of LAPS. Satellite infrared brightness temperature played an important role on the improvement of cloud-top height, and the high-resolution results were propitious to analyze typhoon structure and severe convection field. 2) The application of physical initialization technique of LAPS to add the cloud structure and microphysical information of satellite data into initial field could partly

  18. En skola för alla : Arbetssätt och pedagogik för att möta elever som fått diagnoserna ADHD och Asperger syndrom

    OpenAIRE

    Rydh, Malin; Jonsson, Susanne

    2011-01-01

    Syftet med denna studie var att dels undersöka synen på en skola för alla och dels att ta reda på olika uppfattningar om fungerande arbetssätt för elever med diagnoserna ADHD och Asperger syndrom. Forskningen har en kvalitativ ansats med intervju som metod för datainsamlingen. En slutsats som kan dras av denna studie är att det är av stor vikt att rektorer, lärare och specialpedagoger har kunskaper gällande vilket pedagogiskt förhållningssätt som lämpar sig för arbetet med elever som har de n...

  19. Accumulation of plasmid-mediated fluoroquinolone resistance genes, qepA and qnrS1, in Enterobacter aerogenes co-producing RmtB and class A beta-lactamase LAP-1.

    Science.gov (United States)

    Park, Yeon-Joon; Yu, Jin Kyung; Kim, Sang-Il; Lee, Kyungwon; Arakawa, Yoshichika

    2009-01-01

    A new plasmid-mediated fluoroquinolone efflux pump gene, qepA, is known to be associated with the rmtB gene, which confers high-level resistance to aminoglycosides. We investigated the qepA gene in 573 AmpC-producing Enterobacteriaceae including one Citrobacter freundii known to harbor rmtB. Of them, two clonally unrelated E. aerogenes harbored qepA. Both isolates co-harbored rmtB, qnrS1, qepA, and bla(LAP-1) on an IncFI type plasmid. The qepA was flanked by two copies of IS26 containing ISCR3C, tnpA, tnpR, bla(TEM), and rmtB. The qnrS1 and bla(LAP-1) were located upstream of qepA. All the resistance determinants (qepA, qnrS1, rmtB, and bla(LAP-1)) were co-transferred to E. coli J53 by filter mating from both isolates. Although the prevalence of qepA is currently low, considering the presence of ISCR3C and the possibility of co-selection and co-transferability of plasmids, more active surveillance for these multi-drug resistant bacteria and prudent use of antimicrobials are needed.

  20. Failure Mode Analysis of Aluminium Alloy 2024-T3 in Double-Lap Bolted Joints with Single and Double Fasteners; A Numerical and Experimental Study

    Directory of Open Access Journals (Sweden)

    Khosro Fallahnezhad

    2015-06-01

    Full Text Available This paper aims to study the mechanical behaviour and failure mode of Al 2024-T3 in double-lap bolted joints. To accomplish this, the effect of geometric parameters was investigated in both configurations of single and double fasteners. Using ABAQUS/Standard, a three-dimensional finite element model was developed and verified against the experimental results of the joints loaded in tension. In general, double bolt joints were found to have greater load carrying capacities than single bolt joints (by 40%–49%. In single bolt joints, the plate width had insignificant effect on the behaviour of the joint under tensile loading; whereas, increasing the distance of the hole from the edge, considerably enhanced the strength of the joint. In double bolt joints, changing the edge distance had almost no effect on the behaviour of the joint. However, increasing the plate width from 25.4 to 30 mm increased the load carrying capacity by 28%. This study showed that in single bolt connections, with increasing the edge distance, the failure mode can favourably shift from shear-out to bearing. Also, double bolt joints with wider plates (increased width can beneficially shift the failure mode from net-tension to bearing. The geometric parameters were found to play an important role in controlling the failure mode so that catastrophic failure modes of net-tension and shear-out can be prevented in bolted joint.

  1. Comparison of fatigue crack growth of riveted and bonded aircraft lap joints made of Aluminium alloy 2024-T3 substrates - A numerical study

    Science.gov (United States)

    Pitta, S.; Rojas, J. I.; Crespo, D.

    2017-05-01

    Aircraft lap joints play an important role in minimizing the operational cost of airlines. Hence, airlines pay more attention to these technologies to improve efficiency. Namely, a major time consuming and costly process is maintenance of aircraft between the flights, for instance, to detect early formation of cracks, monitoring crack growth, and fixing the corresponding parts with joints, if necessary. This work is focused on the study of repairs of cracked aluminium alloy (AA) 2024-T3 plates to regain their original strength; particularly, cracked AA 2024-T3 substrate plates repaired with doublers of AA 2024-T3 with two configurations (riveted and with adhesive bonding) are analysed. The fatigue life of the substrate plates with cracks of 1, 2, 5, 10 and 12.7mm is computed using Fracture Analysis 3D (FRANC3D) tool. The stress intensity factors for the repaired AA 2024-T3 plates are computed for different crack lengths and compared using commercial FEA tool ABAQUS. The results for the bonded repairs showed significantly lower stress intensity factors compared with the riveted repairs. This improves the overall fatigue life of the bonded joint.

  2. 多源观测数据在LAPS三维云量场分析中的应用%The Application of Multi-source Data to Three-dimensional Cloud Amount Analysis in LAPS

    Institute of Scientific and Technical Information of China (English)

    刘瑞霞; 陈洪滨; 师春香; 张晓虎

    2011-01-01

    该文将我国FY-2C气象卫星通道数据、地面观测数据、雷达数据融合进入LAPS(Local Analysis Prediction System)三维数据分析系统中,获得了三维云量场分布,并采用北京地区2009年11月9日08:00(北京时,下同)和华南地区2008年6月12 日 14:00个例,设计了 5种试验对LAPS融合的云量场进行分析.结果表明:LAPS云分析中,地面观测对云底结构起主要订正作用,雷达观测对云中、低部信息起主要订正作用,而卫星云图数据对云顶分布订正效果显著,卫星资料是获得客观三维云量场不可或缺的数据.%The quantitative three-dimensional cloud data is important in nowcasting and the modeling of weather and climate. Therefore, 5 schemes are designed to construct three-dimensional cloud amount data from FY-2C satellite data, radar data, ground observation data using LAPS ( Local Analysis Prediction System) developed by NOAA ERSL. The roles of each data in LAPS system are also analyzed. Scheme I uses background data only, and Scheme 2 adds ground observation data. Scheme 3 employs background data and FY-2C satellite data, Scheme 4 uses background data and radar data, and Scheme 5 takes background data.ground observation data, radar data and FY-2C satellite data into consideration. The analysis indicates that every data is important in order to get more objective three-dimensional cloud distribution. Ground observation data gives information of cloud base and cloud amount for the lower atmosphere. Satellite infrared brightness temperature and visible reflectance provide cloud top height and cloud amount in the upper atmosphere. Radar data can help to construct three-dimensional cloud field in the middle and lower level. Combining all these data can provide more objective information of three-dimensional cloud amount. Comparing column cloud amount deduced by LAPS with satellite visible and infrared image shows that the cloud distribution when assimilating all these data

  3. Sottoscrizioni autografe nelle più antiche carte del monastero di S. Liberatore alla Maiella. Contributo alla storia del rapporto tra scrittura e alfabetismo in Abruzzo nel secolo X Autograph subscriptions in the oldest cards of the monastery of S. Liberatore of the Maiella. A contribution to the history of the relationship between writing and literacy in Abruzzo in 10th Century

    Directory of Open Access Journals (Sweden)

    Mariano Dell'Omo

    2005-06-01

    Full Text Available

    Il saggio che si propone di contribuire alla storia delle relazioni tra scrittura e alfabetismo in Abruzzo nel secolo X, deriva da una sezione (pp. CXLI-CLXX della “Introduzione storica, paleografica e archivistica” al volume pubblicato dall’autore nel 2003. L’immediato contesto geo-monastico è quello di S. Liberatore alla Maiella, la più grande delle dipendenze di Montecassino in Abruzzo, e una delle prepositure più notevoli tra le circa sessanta che appartennero al monastero cassinese nell’Italia centro-meridionale. L’obiettivo più generale è quello di far conoscere l’intero fondo archivistico di S. Liberatore, sia quello di età medievale con il citato volume, sia quello di età moderna con il successivo, apparso nel 2006. Questa specifica serie dell’Archivio cassinese, gravitante intorno a S. Liberatore ma relativa anche ad altri centri monastici minori di area abruzzese, e che occupa oggi le capsule da XCIX a CIV, racchiude complessivamente 801 documenti.

    Tra questi se ne annoverano alcuni particolarmente noti agli studiosi – specialmente dopo i lavori di Enrico Carusi (1929, 1932 e Herbert Bloch (1986 –, come il “Memoratorium” dell’abate Bertario († 883 e il “Commemoratorium” – inventario testamentario – del preposito maiellese, poi abate di Montecassino Teobaldo († 1035/1037.

    Alcuni hanno riservato interessanti scoperte, come l’attuale caps. XCIX, fasc. I, n. 4, una carta del luglio 936, che racchiude la più antica sottoscrizione autografa (“Ego qui supra Arechisi iudex” di Arechi, giudice della città di Capua, lo stesso che sottoscrisse il celeberrimo placito del 960, prima testimonianza ufficiale di volgare italiano.

    Altri costituiscono un nucleo di documenti omogenei (nn. 7, 8, 9, 10, 12, 13 la cui edizione integrale ha offerto finalmente in modo completo la più antica collezione di contratti agrari di Montecassino (dal 950 al 984, specialmente sotto forma di

  4. Application of life cycle assessment to production processes of environmentally sustainable concrete, prepared with artificial aggregates; Applicazione della metodologia life cycle assessment alla produzione di conclomerati cementizi di qualita' contenenti aggregati artificiali

    Energy Technology Data Exchange (ETDEWEB)

    Vaccaro, R. [Italrecuperi, Pozzuoli (Italy); Colangelo, F. [Basilicata Univ., Poteza (Italy). Dip. di Ungegneria e Fisica dell' Ambiente; Palumbo, M. [Federico II Univ., Napoli (Italy). Dipartimento di Ingegneria e Fisica dell' Ambiente; Cioffi, R. [Parthenope Univ., Napoli (Italy). Dipartimento per le Tecnologie

    2005-08-01

    This paper is about the application of Life Cycle Assessment (L.C.A.) on environmentally sustainable concrete production processes. The goal of this experimentations is to assess environmental impact and energy demand related to concrete production, by using, in different admixtures, natural and artificial aggregates, belonging from treatments of different kind of industrial wastes characterized by very small particle sizes. Particular attention was concentrated on the utilization of fine fraction since it is difficult to recover in usual fields of recycling (i.e. aggers, crowl spaces, etc.). This study follows the approach from cradle to cradle. This experimentation was conducted in relation to four concrete admixtures produced, one of them containing only natural aggregate, and the other ones obtained by substituting the 10% of aggregate respectively with inert wastes as construction and demolition waste (CeD waste). cement kiln dust (CKD) and marble sludge. For all admixtures six different end-life scenarios have been proposed, one of them considers all materials transported in landfill while the other ones consider a partial transportation on landfill (15%) and a recycle of the 85% of wastes obtained after demolition of structures. [Italian] Il presente lavoro ha come oggetto l'applicazione della metodologia Life Cycle Assessment (L.C.A.) ai processi produttivi di calcestruzzi eco-compatibili. L'obiettivo dello studio e' quello di valutare il carico ambientale ed il consumo energetico associato alla produzione di calcestruzzo impiegando, in differenti miscele, aggregati artificiali provenienti dal trattamento di differenti tipologie di scarti industriali di pezzatura molto piccola. E' stata posta particolare attenzione all'utilizzo della frazione fine in quanto quest'ultima risulta piu' difficilmente recuperabile nei consueti campi d'impiego (es. rienpimento per sottofondi stradali, vespai, etc.). L

  5. THE DFR VALUE TESTING ON THE TYPICAL PANEL LAP JOINTS%典型壁板连接件DFR值试验测定

    Institute of Scientific and Technical Information of China (English)

    董彦民; 刘文珽

    2012-01-01

    Typical structural detail fatigue rating (DFR) value is very important for DFR approach. It is an effective method to obtain DFR value by experiment. The outer wing-lower panel lap joint is an important fatigue critical part of a certain type of aircraft. To evaluate its fatigue quality, fatigue tests were conducted with two types of typical details simulation coupons under constant amplitude. Test result about its DFR value was acquired aiming at the definition of structural DFR value of military aircrafts. It is showed that complex multi-pin joint structure can be better simulated by multi-details structure which can reflect the real structure of geometry and load. The test result is of great value, which provides a reference value for fatigue analysis of similar structure.%典型结构DFR值是DFR方法的基础和应用前提,试验测定则是获取DFR值的有效方法之一。外翼壁板与带板连接部位是某型飞机重要的疲劳关键件,为评价该部位的疲劳性能,采用两种模拟试件进行等幅载荷下结构DFR值的测定试验,针对军机DFR定义,给出了该部位的DFR值测定结果。分析表明,类似的复杂多钉连接件采用多细节试件能够更好地模拟真实结构的几何特征与受载情况。测定所得DFR值为类似结构的疲劳分析提供了基准值,具有重要的工程应用价值。

  6. Effect of adhesive thickness and surface treatment on shear strength on single lap joint Al/CFRP using adhesive of epoxy/Al fine powder

    Science.gov (United States)

    Diharjo, Kuncoro; Anwar, Miftahul; Tarigan, Roy Aries P.; Rivai, Ahmad

    2016-02-01

    The objective of this study is to investigate the effect of adhesive thickness and surface treatment on the shear strength and failure type characteristic of single lap joint (SLJ) CFRP/Al using adhesive epoxy/Al-fine-powder. The CFRP was produced by using hand layup method for 30% of woven roving carbon fiber (w/w) and the resin used was bisphenolic. The adhesive was prepared using 12.5% of aluminum fine powder (w/w) in the epoxy adhesive. The powder was mixed by using a mixing machine at 60 rpm for 6 minutes, and then it was used to join the Al plate-2024 and CFRP. The start time to pressure for the joint process was 20 minutes after the application of adhesive on the both of adherends. The variables in this research are adhesive thickness (i.e. 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm and 1 mm) and surface treatment of adherends (i.e. acetone, chromate sulphuric acid, caustic etch and tucker's reagent). Before shear testing, all specimens were post-cured at 100 °C for 15 minutes. The result shows that the SLJ has the highest shear strength for 0.4 mm of adhesive thickness. When the adhesive thickness is more than 0.4 mm (0.6-1 mm), the shear strength decreases significantly. It might be caused by the property change of adhesive from ductile to brittle. The acetone surface treatment produces the best bonding between the adhesive and adherends (CFRP and Al-plate 2024), and the highest shear strength is 9.31 MPa. The surface treatment give the humidification effect of adherend surfaces by adhesive. The failure characteristic shows that the mixed failure of light-fiber-tear-failure and cohesive-failure are occurred on the high shear strength of SLJ, and the low shear strength commonly has the adhesive-failure type.

  7. Predicting the geometry and location of defects in adhesive and spot-welded lap joints using steady-state thermographic techniques

    Science.gov (United States)

    Turler, Daniel; Orlando, Ernest

    1999-03-01

    Development of nondestructive evaluation (NDE) methods for spot-welded and adhesive-bonded sheet metal joints is essential for widespread use of lightweight materials and new construction techniques in automotive applications. An important objective of research in progress is development of NDE methods to identify and characterize critical flaws in welded and adhesive-bonded joints. We used steady-state heat- flow and thermographic imaging techniques to test welded and adhesive-bonded lap joints in steel and aluminum samples and in adhesive-bonded composite panels and to identify defective spot welds. The resulting surface-temperature maps or thermograms were used to detect voids and areas where the adhesive was not bonded. To better characterize defects in welds and adhesive layers, algorithms have been developed to post process temperature data, producing more accurate definition of the geometry and location of defects than in previous images. Classic heat-transfer theory was used to calculate the heat-flux equilibrium for each individual pixel on the thermograms. Convective and radiative surface heat- transfer coefficients were applied to compensate for the heat exchange between the sample and the environment. This post processing permits us to determine the locations of spot welds and the sizes of the weld nuggets in welded joints, and to clearly image voids in adhesive layers between joints. The effectiveness of the image-processing algorithms was investigated using data from laboratory experiments on test specimens with flaws of known size and location. In addition, the images of the defects produced with the new method were compared to results of two-dimensional heat transfer simulations through the same samples. The simulations were also used to determine boundary conditions for post-processing of images.

  8. Prevalence of comorbidities and baseline characteristics of LAP-BAND AP® subjects in the Helping Evaluate Reduction in Obesity (HERO study.

    Directory of Open Access Journals (Sweden)

    Nancy Dreyer

    Full Text Available OBJECTIVE: To describe the baseline characteristics in patients who chose placement of a LAP-BAND AP® System (LBAP and participated in the Helping Evaluate Reduction in Obesity (HERO Study across regions. PATIENTS AND METHODS: HERO is a five-year, prospective, multicenter, international study of patients with LBAP placement between July 22, 2009 and January 31, 2011. In addition to baseline and peri-surgery clinical data, seven follow up visits are scheduled at 3, 6 and 12 months, and annually through year five. Data collection included family and medical history, clinical outcomes, laboratory data, health-related quality of life (HRQoL, productivity, healthcare resource utilization, and adverse events. RESULTS: LBAP were placed in 1106 enrolled patients; 56.6% from the US, 26.3% from Europe, 7.1% from Canada, and 10.0% from Australia. The majority were female (n = 877 (79.3% with a mean age of 43 years (s.d. = 11.4 and mean body mass index of 45.1 kg/m(2 (s.d. = 6.9. The most common comorbidities were hypertension (HTN (overall  = 42.9% and diabetes (overall 22.2%, with 27% from the US and 14% from Europe. Overall, less than 5% had a history of cardiovascular disease. The prevalence rates of HTN, diabetes and cardiovascular disease were significantly (p<0.001 higher in men than in women across all regions. Overall HRQoL also worsened with increasing BMI. CONCLUSIONS: The HERO study is the first large, multinational and long-term registry with the LBAP. This study will provide real-world outcomes data on LAGB that will help inform patient choice, clinician treatment strategies, and payer reimbursement decisions.

  9. Experimental and numerical studies on the issues in laser welding of light-weight alloys in a zero-gap lap joint configuration

    Science.gov (United States)

    Harooni, Masoud

    current study a non-destructive evaluation method based on spectroscopy is proposed to detect the presence of pores in the lap joint of laser welded AZ31B magnesium alloy. The electron temperature that is calculated by the Boltzmann plot method is correlated to the presence of pores in the weld bead. A separate series of experiments was performed to evaluate the effect of an oxide coating layer on the dynamic behavior of the molten pool in the laser welding of an AZ31B magnesium alloy in a zero-gap lap joint configuration. A high speed CCD camera assisted with a green laser as an illumination source was selected to record the weld pool dynamics. Another technique used in this study was two-pass laser welding process to join AZ31B magnesium sheet in a zero-gap, lap-shear configuration. Two groups of samples including one pass laser welding (OPLW) and two pass laser welding (TPLW) were studied. In the two pass laser welding procedure, the first pass is performed by a defocused laser beam on the top of the two overlapped sheets in order to preheat the faying surface prior to laser welding, while the second pass is applied to melt and eventually weld the samples. Tensile and microhardness tests were used to measure the mechanical properties of the laser welded samples. A spectrometer was also used in real-time to correlate pore formation with calculated electron temperature using the Boltzmann plot method. The results of calculated electron temperature confirmed the previous results in earlier chapter. Magnesium and aluminum are two alloys which are used in different industries mainly due to their light weight. The main use of these two alloys is in automotive industry. Since different parts of the automobiles can be manufactured with each of these two alloys, it is essential to evaluate the joining feasibility of dissimilar metals such as aluminum to magnesium. A 4 kW fiber laser is used to join AZ31B magnesium alloy to AA 6014 using an overlap joint configuration. Two

  10. 固结磨料研磨掺铈玻璃与K9玻璃的对比研究%Research on fixed abrasive lapping of cerium doped glass and K9 glass

    Institute of Scientific and Technical Information of China (English)

    夏磊; 李军; 李鹏鹏; 朱永伟; 王文泽; 左敦稳

    2013-01-01

    在相同研磨条件下,采用固结磨料研磨垫研磨掺铈玻璃和K9玻璃,比较掺铈玻璃和K9玻璃的研磨材料去除率,研磨摩擦系数值和加工后表面质量.研究结果表明:金刚石固结磨料研磨垫对掺铈玻璃的材料去除率和研磨摩擦系数小于K9玻璃,表面质量相对较优.掺铈玻璃残屑中的Ce与Si在金刚石颗粒表面及磨粒之间形成包裹层和填覆层,改变材料去除机理,导致材料去除率和摩擦系数下降,获得更优的表面质量.%Fixed abrasive pad was employed to lap cerium doped glass and K9 glass in the same condition. Material removal rate(MRR) , lapping friction coefficient and surface quality were investigated. Results showed that MRR and lapping friction coefficient of cerium doped glass were less than those of K9 glass, but surface quality was better. The Ce and Si from the chips of cerium doped glass formed a covering layer on diamond particle surface and a filling layer in the gap between abrasives, thus changing the material removal mechanism. MRR and friction coefficient declined, and surface quality got better.

  11. Study on ultra-precision machining of K9 glass by fixed abrasive lapping and polishing%固结磨料研磨抛光K9玻璃的超精密加工工艺研究

    Institute of Scientific and Technical Information of China (English)

    李标; 李军; 朱永伟; 夏磊; 李鹏鹏; 孙玉利; 左敦稳

    2012-01-01

    PHL-350 High-speed lapping & polishing system was employed in ultra-precision machining experiment of K9 glass by fixed abrasive lapping and polishing. Influence of fixed abrasive pad ( FAP ) with different particle size and different abrasive on material removal rate and surface quality of the K9 glass was studied. An ultra-precision machining process of K9 glass with high efficiency, low cost and high quality was obtained: first M20/30 diamond FAP was used for lapping, then 3 μm CeO2 FAP was used for polishing. A good surface of K9 glass with surface roughness RMS less than 0. 6 nm and very few micro scratches or damages was achieved.%采用PHL-350型平面高速研磨抛光系统,通过固结磨料研磨抛光方法进行了超精密加工K9玻璃试验研究.探讨了不同粒径和不同磨粒研磨抛光垫在加工中对K9玻璃材料去除率和表面质量的影响.获得了高效率、低成本、高质量的K9玻璃的超精密加工工艺:首先使用M20/30金刚石研磨垫研磨,然后使用3μm CeO2抛光垫抛光.加工后K9玻璃的表面粗糙度优于RMS 0.6 nm,微观损伤少.

  12. Measurement of flux distribution on 100 kVA 3 phase distribution transformer assembled with 45 T-joint and mitred lap corner joint with stagger yoke by using search coil

    Energy Technology Data Exchange (ETDEWEB)

    Daut, I.; Ahmad, D.M.M.; Taib, S. [Univ. of Malaysia at Perlis, Kangar Perlis (Malaysia). School of Electrical System Engineering

    2008-07-01

    Iron loss in electrical transformers can be reduced by improving the quality of the steel or by using better building and design techniques. Also, the efficiency of a transformer core depends greatly on the design of the joints at the junctions of the yoke and limbs. The objective of this study was to know the flux distribution of the transformer core built from M5 electrical steel with 3 per cent silicon iron assembled with a 45 degree T- joint and mitred lap corner joint with stagger yoke. The study measured the flux distribution on a 100 kVA 3phase distribution transformer using no load tests. The study showed that the flux distribution in cores assembled with M5 materials varied with the stagger length. The localized flux density increased from the outer to the inner core of the 45 degree T-joint. A small amount of flux deviation from the rolling direction occurred at the overlap, but no rotational flux was present in the joint. The reason for the higher loss in the 45 degree T-joint and the mitred lap joint was due to the presence of rotational flux. 6 refs., 11 figs.

  13. Kuritegevus, majanduskasvu laps / Ege Hirv

    Index Scriptorium Estoniae

    Hirv, Ege, 1960-

    2003-01-01

    Tõhus võitlus kuritegevuse vastu on preventsioon, mis algab ühiskonna keskendumisest vaimsetele väärtustele, loovuse eelistamisest tarbimisele, reklaami piiramisest ja inimeste rahulejätmisest, leiab autor

  14. International Students Lap China up

    Institute of Scientific and Technical Information of China (English)

    ZHOUCHAO

    2004-01-01

    THESE days students from Europe, the USA, Korea and Japan are a common sight in all major cities of China. Like Chinese students, they read under trees and chat in the corridors. In their free time they go to local agricultural produce markets, or chat on-line at a nearby Internet cafe.

  15. Application of the reliability analysis to the wastewater plant. Activated sludge pure oxygen system; Applicazione dell'analisi di affidabilita' alla depurazione delle acque. Impianto a fanghi attivi ad ossigeno puro

    Energy Technology Data Exchange (ETDEWEB)

    Corti, A. [Florence Univ., Florence (Italy). Dipt. di Energetica Sergio Stecco; Giagnoni, L. [Florence Univ., Florence (Italy). Dipt. di Energetica Sergio Stecco, Sez. Impianti e Tecnologie Industriali; Sirini, P. [Florence Univ., Florence (Italy). Dipt. di Ingegneria Civile

    2001-08-01

    processo di depurazione, soprattutto se l'impianto e' connesso ad una rete fognaria di tipo misto, non si puo' certo considerare stazionario: la portata e la qualita' del liquame affluente risentono sia dei cicli giornalieri sia stagionali con una variazione molto ampia del carico idraulico e organico. Questa variabilita' richiede una corretta valutazione in fase progettuale in modo da ampliare l'azione dell'analisi di affidabilita' ricercando anche eventi in grado di alterare il prodotto finale rispetto alle intenzioni progettuali ed operative. Con questi intenti sono state applicate le tecniche classiche di valutazione dell'affidabilita' alla linea di depurazione delle acque, con riferimento alla sezione fanghi attivi ad ossigeno puro presente presso l'impianto di depurazione della citta' di Bologna.

  16. Models for economical and environmental systematic cost benefit assessment of waste separate collection. Their application to the paper cycle; Modelli per la valutazione sistemica costi-benefici, economici ed ambientali, della raccolta differenziata dei rifiuti urbani. Applicazione alla filiera carta

    Energy Technology Data Exchange (ETDEWEB)

    Beltramo, R. [Turin Univ., Turin (Italy). Dipt. di Scienze Merceologiche; Scapino, C. [Fise Assoambiente Unionmaceri, Rome (Italy)

    2001-04-01

    The research carried out by the Turin University on behalf of Fise Assoambiente, starting from an analysis of the specialised bibliography of the sector, has highlighted the complexity of the waste problem and the need of a more thorough study aiming at assessing economical and environmental impacts deriving from separate collection, with particular reference to the paper sector. To this end, thanks to the co-operation of companies operating in the collection, sorting and grading of paper and paper mills using maceration, it was possible to develop a model for micro-economical and environmental analysis of the paper cycle which supplied useful data for the detection - by means of the Stella programme, produced by High Performance Systems Inc. - of the effects resulting from a waste management policy oriented towards the attainment of the rigid separate collection targets. [Italian] La ricerca svolta dall'Universita' di Torino per conto di Fise Assoambiente, partendo da un'analisi di bibliografia specializzata del settore, ha evidenziato la complessita' del problema rifiuti e la necessita' di un approfondimento volto a valutare gli impatti economici ed ambientali derivanti dalla raccolta differenziata, con particolare riferimento al settore della carta. A tale scopo, grazie alla collaborazione di imprese operanti nel settore della raccolta, selezione e cernita della carta e di cartiere che utilizzano macero, e' stato predisposto un modello per l'analisi microeconomica ed ambientale della filiera carta, che ha fornito dati utili per rilevare a livello macroeconomico, mediante il programma Stella, prodotto dalla High Performance Systems Inc., gli effetti che scaturiscono da una politica di gestione dei rifiuti orientata al raggiungimento di obiettivi rigidi di raccolta differenziata.

  17. 缓蚀剂对LY12铝合金搭接件疲劳寿命的影响%Influence of Corrosion Inhibitors on Fatigue Life of LY12 Aluminium Alloy Lap Joints

    Institute of Scientific and Technical Information of China (English)

    张勇; 卞贵学; 陈跃良; 张泰峰

    2013-01-01

    模拟飞机服役环境,对未涂抹及涂抹缓蚀剂的航空LY12铝合金搭接试验件进行了腐蚀试验和疲劳试验.通过对试验件分解检查,分析了腐蚀环境对涂抹缓蚀剂航空LY12铝合金典型螺栓搭接件的影响.对缓蚀剂对搭接件的疲劳性能的影响进行了统计和分析.结果表明,相同腐蚀时间,未涂抹缓蚀剂试验件的螺栓孔附近和搭接面腐蚀程度较涂抹缓蚀剂试验件严重,缓蚀剂可有效减缓腐蚀,且不同的缓蚀剂类型对腐蚀的减缓程度不同.一般环境下,涂抹缓蚀剂的试验件比未涂抹缓蚀剂试验件的疲劳寿命有所减少,应力水平越小影响程度越明显;腐蚀40 d后,涂抹缓蚀剂的试验件较未涂抹缓蚀剂的试验件寿命育所增加,且不同应力水平和缓蚀剂类型对疲劳寿命的影响程度不同.%Corrosion test and fatigue test were carried out for LYl2 aluminium alloy lap joints with and without corrosion inhibitors.Influence of corrosion environment on LY12 aluminium alloy typical bolt lap joints daubed with corrosion inhibitors was analysed by overhauling specimens.Influence of corrosion inhibitors on fatigue property of lap joints was collected and analysed.The results show that faying surface of specimens without corrosion inhibitors corroded more severely during the same time,corrosion inhibitors can inhibite corrosion,and the effectiveness of various corrosion inhibitors is different In general environment,the fatigue life of specimens daubed with corrosion inhibitors reduced,influence extent is increasing obviously with the decrease of stess level.After 40 d corrosion,the fatigue life of specimens daubed with corrosion inhibitors increased,and influence extent is different with various stress level and corrosion inhibitors.

  18. Flann O’Brien’s At Swim-Two-Birds: the Author at the Bar At Swim-Two-Birds di Flann O’Brien: l’autore messo alla sbarra dai personaggi

    Directory of Open Access Journals (Sweden)

    Antonio Bibbò

    2012-04-01

    Full Text Available In At Swim-Two-Birds an author is summoned to stand trial for his despotism.  Dermot Trellis rapes one of his characters and is therefore overthrown in a “narrative coup” by his very characters. The leader of the rebels is his illegitimate son, along with a cohort of characters from either this or other novels. The protest reveals an examination of literary devices that not only does  expose to ridicule narrative conventions – e.g. the surprising testimony of a cow strikingly voices the clash between story time and discourse time – but most importantly brings forward the need for an ethical stance in even the most apparently escapist literary works. Relying on recent narratological studies on metafiction (Linda Hutcheon’s and Patricia Waugh’s and on literary characters, I will show that the characters’ revolt as well as their courtroom performance can be seen as an accusation levelled against fictional and social hierarchies. Moreover, I will argue that the abrupt and ambivalent ending of the story accounts for the writer’s need to mediate between the author’s and the characters’ stances in order to keep the novel together.In At Swim-Two-Birds (1939 un autore viene processato a causa del suo dispotismo. Dermot Trellis ha stuprato un personaggio e, in seguito a questa e ad altre manifestazioni del proprio potere tirannico, subisce un colpo di stato narrativo da parte delle sue stesse creazioni. A guidare la rivolta sarà proprio il figlio illegittimo di Trellis, con l’aiuto di una coorte di personaggi reduci da questa o da altre opere. Ne risulta una disamina dei procedimenti letterari che non solo mette alla berlina le convenzioni narrative – nella sorprendente testimonianza di una mucca, la perfetta rappresentazione del contrasto tra tempo della storia e tempo del racconto – ma che soprattutto insiste sull’importanza di una posizione etica dalla quale non può svincolarsi neanche l’opera più apparentemente

  19. Development of a monoclonal antibody to urinary degradation products from the C-terminal telopeptide alpha 1 chain of type I collagen. Application in an enzyme Immunoassay and comparison to CrossLaps(TM) ELISA

    DEFF Research Database (Denmark)

    C, Fledelius; I, Kolding; P, Quist

    1997-01-01

    A monoclonal antibody MAbA7 was raised against a synthetic peptide having a sequence (EKAHDGGR) specific for a part of the C-telopeptide alpha 1 chain of type I collagen. MAbA7 was labelled with horseradish peroxide and used in a competitive one-step enzyme-linked immunosorbent assay (ELISA...... averaged 96.6%+/-5.3 (mean+/-1SD). Values obtained in the ELISA were highly correlated (r=0.93) to values obtained by a commercially available assay (CrossLaps(TM) ELISA) known to measure urinary degradation products derived from the C-telopeptide of type I collagen reflecting the rate of bone resorption....... Investigation of the urinary fragments responsible for the immunological response in the two assays revealed, however, that they are not identical. Values obtained in urine samples from postmenopausal women (n=108) and patients with Paget's disease (n=6) increased 43% (p

  20. 单搭自冲铆接过程的数值模拟及质量评价%Numerical Simulation of Single Lap Self- piercing Riveting Process and Quality Evaluation

    Institute of Scientific and Technical Information of China (English)

    严柯科; 何晓聪; 张玉涛; 冯模盛

    2011-01-01

    Self-piercing riveting(SPR) is a new process without drilling holes between two panels. It introduces the principle and uses the finite clement analysis (FEA) software LS-DYNA to simulate the process of single lap self - piercing riveting, analyzes the riveting forming process, stress, strain and time- load change trend, evaluates the riveting effect and quality.%自冲铆接是在板料和铆钉之间形成连接而不需要预冲孔的新工艺.介绍了自冲铆接的原理,利用有限元软件LS - DYNA对单搭自冲铆接工艺过程进行数值模拟,分析了铆接成形过程、应力应变和时间-载荷变化趋势,对铆接效果及质量进行了评价.

  1. Single Nucleotide Polymorphisms(SNPs)within intron 12 and exon 13 of LAP3 gene in Bos taurus%牛LAP3基因内含子12和外显子13单核苷酸多态性

    Institute of Scientific and Technical Information of China (English)

    郑雪; 鞠志花; 李荣岭; 李秋玲; 张爱武; 仲跻峰; 王长法

    2010-01-01

    采用单链构象多态性(single-strand conformation polymorphism,SSCP)、创造酶切位点PCR(created restriction site-PCR,CRS-PCR)、限制性片段长度多态性(restriction fragment length polymorphism,RFLP)以及直接测序方法,研究中国荷斯坦牛、鲁西黄牛和渤海黑牛LAP3基因第12内含子和第13外显子的单核苷酸多态性(SNP).共检测到5个SNP,分别为24 794(T/G)、24 803(T/C)、24 846(T/C)、24 564(G/A)和25 415(T/C),其中24 564(G/A)为首次报道的位点.经PCR-SSCP结合测序图谱发现24 794(T/G)、24 803(T/C)、24 846(T/C)位点完全连锁,但该连锁位点在鲁西黄牛群体中未检测到.5个SNP位点在中国荷斯坦牛、鲁西黄牛和渤海黑牛群体的优势等位基因相同,分别是T、T、T、G、T,其等位基因频率分别是T(CH 0.579/LY 1/BB 0.722)、T(CH 0.579/LY 1/BB 0.722)、T(CH 0.579/LY 1/BB 0.722)、G(CH 0.584/LY 0.775/BB 0.500)和T(CH 0.596/LY 0.796/BB 0.750),多态信息含量均在0.25至0.5之间,属于中度多态.

  2. Deceptive pictures and revealing sounds / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2009-01-01

    2009. aasta Ars Fennica kunstipreemia pälvinud eesti kunstniku ja fotograafi Mark Raidpere videokunstist, muusika ja heli tähtsast rollist tema videotes (videod "Pühendus/Dedication" (2008), "5 Guards" (2006), "Wailing Woman" (2007), "Majestoso Mystico" (2007), "Vekovka" (2008) jt.)

  3. Nord kolib Tallinna ülikooli alla

    Index Scriptorium Estoniae

    2010-01-01

    Tallinna Ülikooli rektor prof Rein Raud ning OÜ Eraakadeemia Nord juhatuse liige Indrek Grauberg sõlmisid lepingu Akadeemia Nord õigusteaduse õppekavade baasil Tallinna Ülikooli uue akadeemilise üksuse - Tallinna Ülikooli õigusakadeemia - loomiseks

  4. Dalla crisi finanziaria alla crisi reale

    Directory of Open Access Journals (Sweden)

    CARLO D’ADDA

    2010-01-01

    Full Text Available The financial crisis of 2008 is put in relation with two bubbles, financial and housing. Easy credit is at the origin of both bubbles. Risky bonds were issued to mobilize mortgages originated in the housing market, and bad bonds entered a fantastic number of institutional and private portfolios all over the world without any perception of the their risk. Unfortunately, bank credit to speculators was abundant and fed the final growth of the bubbles. When fears started to spread, the fall was immediate and expectations impaired very rapidly. The main aggregate demand components were severely curtailed and production fell as well. This is the crisis of the real economy. Fortunately, as opposed to what happened in 1929, the interventions of central banks and governments have been of an unprecedented size. The bail out of insolvent banks in particular has been providential. The exit from the current crisis, however, will surely be slow.

  5. V ozhidanii "tjomnoi loshadki" / Alla Plotkina

    Index Scriptorium Estoniae

    Plotkina, Alla

    2005-01-01

    7. juunil lõpeb alates 1995. a. Eesti Panka juhtinud Vahur Krafti ametiaeg. Eesti Panga presidendiks kandideerivad senine panga president Vahur Kraft ja Riigikogu liige Andres Lipstok. 2000. a. toimunud Eesti Panga presidendi valimistest

  6. Allan Allmere: tulevane Meelis Atonen / Henri Allas

    Index Scriptorium Estoniae

    Arras, Henri

    2009-01-01

    Liberalismi Akadeemia juht ja Tallinna reforminoorte esimees Allan Allmere keskendub 2009. aastal Tallinna linnavolikokku kandideerides peamiselt noortele ja nende probleemidele. Noormehe hobiks on väärtpaberiturgudel mängimine ning oma eeskujudena nimetab ta USA majandusteadlast Milton Friedmani ja Meelis Atoneni

  7. Dai suoni alla lingua in uso

    DEFF Research Database (Denmark)

    Pierucci, Giulia

    Being able to understand and produce the sound system of the target language is a building block in the process of language learning. In spite of this, pronunciation is often neglected in FL/SL curricula and teaching practice. This project’s goal is to contribute to the field of FLT by designing......, testing and refining learning paths for Danish beginners of Italian, with the aim of fostering “phonological awareness” and overall language skills. Building on convergent research results about the impact of pronunciation on oral interaction in FL/SL, and the influence of phonological competence...... on the whole process of FL learning, this project will integrate intensive training in pronunciation with activities aimed at a range of language components, from grammar to comprehension to pragmatic competence, always based on authentic material. The project’s methodology is based on design research...

  8. Frode alla legge o frode della legge?

    OpenAIRE

    Salvatore Berlingò

    2011-01-01

    Il saggio riproduce con qualche variante il contenuto della voce “Fraude de ley” - che apparirà, in traduzione spagnola, nel Diccionario General de Derecho Canónico, dell’Instituto Martìn Azpilcueta - ed è destinato agli Studi in onore di Rinaldo Bertolino.SOMMARIO: 1 - “Fraus legis” e “fictio iuris” – 2. La frode della legge e la simulazione – 3. Il mendacio e la compromissione delle regole fondamentali dell&rs...

  9. Alla ricerca del disco perduto”

    Directory of Open Access Journals (Sweden)

    Vittorio Castelli

    2009-09-01

    Full Text Available Raiders of the Lost Record Hereby we will consider in particular the relations between jazz and record experts. The search for “hidden treasures”, such as unpublished live recordings, has brought to the growth of collections of records which are very interesting from a musicological point of view. We will examine various types of collectors, from those who relate to the record as an object, to those who are interested in its “musical message”. The exemplary story of the collector Dick Rieber has inspired the latter. The relation between collector and music producer has always been fruitful prolific and very often the two characters are the same person. Both theoretical and material contributions of collectors to discography are always very interesting. In the end we will examine the situation in Italy and we will show the personal story of the author who contributed to the production of plenty of music brands.

  10. Kui prooviks uuesti alustada... / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2005-01-01

    Näitus "Maalimine keelatud" Tallinna Kunstihoones, kuraator Anders Härm. Esindatud on kunstnike Davide LaRocca, Ylva Ogland'i, Ritums Ivanovs'i, Daniele Galliano, Sophia Schama, Matts Leiderstam'i, Jani Leinonen'i, Mari Sunna, Tõnis Saadoja jt. looming

  11. I fisici italiani alla sfida nucleare

    CERN Multimedia

    Perugini, Emanuele

    2007-01-01

    More than a machine, la biggest machine in the world, seems to be a megalomaniac madness, a sin of presumption of the human spirit; this machine is european, but has a great italian participation, especially from INFN. (2 pages)

  12. Elektrooniline raamat iga padja alla / Aavo Kokk

    Index Scriptorium Estoniae

    Kokk, Aavo, 1964-

    2010-01-01

    Autor arutleb, kuidas muudavad uued tehnilised lahendused raamatute lugemise harjumusi ning raamatuturgu. Elektroonilisest raamatust Sony Reader. Avo Kokk juhatab Balti raamatumessi raames toimuvat konverentsi "E-raamat: evolutsioon või revolutsioon"

  13. Dalla frattura alla scienza dei metalli

    Directory of Open Access Journals (Sweden)

    M.Cavallini

    2008-04-01

    Full Text Available La frattura inizia ad essere considerata oggetto di studio da Leonardo da Vinci e trova in Vannoccio Biringucci ed in Galileo Galilei i precursori di un approccio scientifico al come e perché si rompe. Nell’arco di poco più di un secolo, il sedicesimo, si trovano i primi riferimenti scritti di esperienze e interpretazioni su cui lavorare: i limiti tecnologici e di conoscenza scientifica dei materiali allora disponibili hanno impedito una interpretazione soddisfacente del fenomeno della rottura. Sarebbero occorsi altri due secoli per collegare con una relazione lineare, prima forza e deformazione, e poi tensione e deformazione.

  14. Frode alla legge o frode della legge?

    Directory of Open Access Journals (Sweden)

    Salvatore Berlingò

    2011-03-01

    Full Text Available Il saggio riproduce con qualche variante il contenuto della voce “Fraude de ley” - che apparirà, in traduzione spagnola, nel Diccionario General de Derecho Canónico, dell’Instituto Martìn Azpilcueta - ed è destinato agli Studi in onore di Rinaldo Bertolino.SOMMARIO: 1 - “Fraus legis” e “fictio iuris” – 2. La frode della legge e la simulazione – 3. Il mendacio e la compromissione delle regole fondamentali dell’ordinamento – 4. La repressione o prevenzione di collusioni o altre frodi processuali – 5. Le  illegittimità amministrative causate da “malae fraudes” e la “bona fraus” coonestata dalla suppletio Ecclesiae.

  15. Leedus pandi homoinfo keelu alla / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2009-01-01

    Leedu parlament kiitis teist korda heaks seaduse "Alaealiste kaitsmisest negatiivse informatsiooni eest" (Law on the Protection of Minors against the Detrimental Effect of Public Information ; Nepilnameciu apsaugos nuo neigiamo viešosios informacijos poveikio). Lisa: Grybauskaite näeb homofoobiat

  16. Dal rilievo topografico alla rappresentazione virtuale

    Directory of Open Access Journals (Sweden)

    Massimo Cristaldi

    2004-07-01

    Full Text Available Le applicazioni 3D danno la possibilita di lavorare direttamente con il volume dei corpi solidi nello spazio geometrico a tre dimensioni, quale metafora della realtà. Quando la rappresentazione virtuale della realtà è costruita partendo da dati accurati derivanti dalla sua discretizzazione, come i dati rilevati durante una campagna di rilevamento, e dalla riproduzione fedele dei progetti tecnici 2D, il modello tridimensionale assume un'elevata efficacia, sia comunicativa che tecnico-progettuale.Con queste premesse, la rappresentazione assurge ad avere una valenza scientifica e diviene un utile strumento per i professionisti che hanno la necessita di dare "vitatridimensionale" alle idee, ai progetti ed ai prototipi, che possono essere realizzati virtualmente prima ancora chediventino realizzazioni reali. Accomunati dagli stessi intenti econdividendo la stessa vision, la MESTOR e l'Assessorato ai LL. PP del Comune di Catania, hanno avviato una proficua collaborazione, coordinata dal 4° Servizio "Progettazione eRealizzazione Nuovo Verde e Arredo Urbano" della V Direzione LL.PP, che ha portato alia modellazione e renderingdel piu famoso giardino di Catania, nell'ambito degli interventi di "Recupero e Valorizzazione del Verde StoricoGiardino Bellini".

  17. Põlva poisid teevad filmiga ilma / Tiia Allas

    Index Scriptorium Estoniae

    Allas, Tiia

    2000-01-01

    Põlvas elavad kooliõpilased Christian Kask ja Daniel Müntinen said Theodor Lutsu filmipäevadel parima animafilmi auhinna oma filmiga "UFO" ja kandideerisid lühimängufilmidega "Voitkajaht" ja "Snaiper" peaauhinnale

  18. Gli incisori alla corte di Zoppino

    Directory of Open Access Journals (Sweden)

    Giorgia Atzeni

    2014-06-01

    Full Text Available L’impresa editoriale di Nicolò Aristotele dei Rossi, detto lo Zoppino, attivo a Venezia dal 1505 al 1544, è emblematica di una svolta epocale in cui il volgare scritto, la nuova lingua letteraria, apre le porte della cultura a un folto pubblico. La scelta di ornare i volumi con le illustrazioni rende il prodotto zoppiniano vincente nel mercato editoriale lagunare. Dallo spoglio dei titoli figurati emerge il suo rapporto privilegiato con un gran numero di xilografi tale da configurare l’esistenza di un vero e proprio atelier al suo servizio. The publishing feat of Nicolò Aristotele dei Rossi, said the Zoppino, active in Venice from 1505 to 1544, is emblematic of a turning point where the vulgar writing, new literary language opens the doors of culture to a large audience the appropriate choice to adorn books with illustrations makes the product successful in the publishing lagoon’s market. The study about the illustrated titles shows that he forge privileged relationships with a big number of wood engravers that we can speak of a real atelier at his service.

  19. Davanti alla legge. Letteratura e diritto

    NARCIS (Netherlands)

    Magris, Claudio

    Durante la sua permanenza in quanto scrittore ospite all’Università di Utrecht nel febbraio 2009, Claudio Magris pronunciò – in inglese – la prima ‘Romano Guarnieri Lecture in Italian Studies’, scegliendo come tema il rapporto fra letteratura e diritto. Nella sua prolusione Magris afferma che la

  20. Leedus pandi homoinfo keelu alla / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2009-01-01

    Leedu parlament kiitis teist korda heaks seaduse "Alaealiste kaitsmisest negatiivse informatsiooni eest" (Law on the Protection of Minors against the Detrimental Effect of Public Information ; Nepilnameciu apsaugos nuo neigiamo viešosios informacijos poveikio). Lisa: Grybauskaite näeb homofoobiat

  1. Dal taccuino alla Electronic Flight Bag

    Directory of Open Access Journals (Sweden)

    Fabrizio Bernardini

    2007-03-01

    Full Text Available Con il termine generico di carta aeronautica vogliamo identificare una serie di prodotti che va dalle carte più generiche, che rappresentano tipici elementi geografici con sovrapposte informazioni aeronautiche, a quelle più specializzate, che rappresentano esclusivamente elementi aeronautici, come le carte di radionavigazione in aerovia. Ad esse si aggiungono poi quelle relative alle manovre di avvicinamento e di allontanamento dagli aeroporti, anch’esse con procedure strumentali, che vanno a compilare quei volumi che si potrebbero definire il portolano dell’aviatore. Con l’importante differenza che queste carte devono essere usate pilotando un velivolo con margini di sicurezza e velocità decisamente diversi da quelli usati per la navigazione marittima.

  2. Deceptive pictures and revealing sounds / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2009-01-01

    2009. aasta Ars Fennica kunstipreemia pälvinud eesti kunstniku ja fotograafi Mark Raidpere videokunstist, muusika ja heli tähtsast rollist tema videotes (videod "Pühendus/Dedication" (2008), "5 Guards" (2006), "Wailing Woman" (2007), "Majestoso Mystico" (2007), "Vekovka" (2008) jt.)

  3. Nord kolib Tallinna ülikooli alla

    Index Scriptorium Estoniae

    2010-01-01

    Tallinna Ülikooli rektor prof Rein Raud ning OÜ Eraakadeemia Nord juhatuse liige Indrek Grauberg sõlmisid lepingu Akadeemia Nord õigusteaduse õppekavade baasil Tallinna Ülikooli uue akadeemilise üksuse - Tallinna Ülikooli õigusakadeemia - loomiseks

  4. Davanti alla legge. Letteratura e diritto

    NARCIS (Netherlands)

    Magris, Claudio

    2009-01-01

    Durante la sua permanenza in quanto scrittore ospite all’Università di Utrecht nel febbraio 2009, Claudio Magris pronunciò – in inglese – la prima ‘Romano Guarnieri Lecture in Italian Studies’, scegliendo come tema il rapporto fra letteratura e diritto. Nella sua prolusione Magris afferma che la let

  5. Elektrooniline raamat iga padja alla / Aavo Kokk

    Index Scriptorium Estoniae

    Kokk, Aavo, 1964-

    2010-01-01

    Autor arutleb, kuidas muudavad uued tehnilised lahendused raamatute lugemise harjumusi ning raamatuturgu. Elektroonilisest raamatust Sony Reader. Avo Kokk juhatab Balti raamatumessi raames toimuvat konverentsi "E-raamat: evolutsioon või revolutsioon"

  6. Lihtsalt kunst ja kapital / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2007-01-01

    Saksa galeristi ja kollektsionääri Rolf Ricke kogu põhjal koostatud näitusest "Das Kapital - Blue Chips & Masterpieces" Frankfurdi Moodsa Kunsti Muuseumis. Kunstikogumisest ja kunstipoliitikast Lääne-Euroopas

  7. V ozhidanii "tjomnoi loshadki" / Alla Plotkina

    Index Scriptorium Estoniae

    Plotkina, Alla

    2005-01-01

    7. juunil lõpeb alates 1995. a. Eesti Panka juhtinud Vahur Krafti ametiaeg. Eesti Panga presidendiks kandideerivad senine panga president Vahur Kraft ja Riigikogu liige Andres Lipstok. 2000. a. toimunud Eesti Panga presidendi valimistest

  8. An artist and his double / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2010-01-01

    Marko Raadi portreefilmist kunstnik Jaan Toomikust "Toomiku film" (Allfilm, 2008) ning näitlejast, lavastajast ja elukunstnikust Alar Sudakust (kunstnikunimega Elaan) "Isa, Poeg ja Teatri Vaim" (Allfilm, 2009) sarjast "Eesti lood"

  9. Allan Allmere: tulevane Meelis Atonen / Henri Allas

    Index Scriptorium Estoniae

    Arras, Henri

    2009-01-01

    Liberalismi Akadeemia juht ja Tallinna reforminoorte esimees Allan Allmere keskendub 2009. aastal Tallinna linnavolikokku kandideerides peamiselt noortele ja nende probleemidele. Noormehe hobiks on väärtpaberiturgudel mängimine ning oma eeskujudena nimetab ta USA majandusteadlast Milton Friedmani ja Meelis Atoneni

  10. Teletrasporto dalla fantascienza alla realtà

    CERN Document Server

    Castellani, Leonardo

    2011-01-01

    Chi di noi correndo nell’ansia di un ritardo non ha desiderato per un attimo di teletrasportarsi nel luogo dell’appuntamento? Proprio come facevano i personaggi di Star Trek entrando nella sala teletrasporto dell’ Enterprise e ricomparendo immediatamente in qualche altro punto dell’universo. Forse ci siamo anche chiesti se la scienza e gli sviluppi della tecnologia ci porteranno mai a questo. Gli autori propongono un viaggio nel mondo dei quanti, dove si nascondono possibilità sorprendenti: non solo il teletrasporto di particelle, ma sistemi crittografici a prova della più abile spia, e calcolatori che usano singoli atomi come registri di memoria, capaci di calcoli ritenuti fino a oggi impossibili. I fondamenti della fisica microscopica vengono descritti senza tecnicismi; se ne illustrano applicazioni che, come è successo in passato con il transistor e il laser, trasformeranno radicalmente i nostri calcolatori, le transazioni commerciali e le carte di credito, le comunicazioni, insomma una parte im...

  11. Lihtsalt kunst ja kapital / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2007-01-01

    Saksa galeristi ja kollektsionääri Rolf Ricke kogu põhjal koostatud näitusest "Das Kapital - Blue Chips & Masterpieces" Frankfurdi Moodsa Kunsti Muuseumis. Kunstikogumisest ja kunstipoliitikast Lääne-Euroopas

  12. Il consociativismo olandese alla prova della globalizzazione

    Directory of Open Access Journals (Sweden)

    Giovanni Cimbalo

    2011-05-01

    Full Text Available Testo della relazione tenuta al Convegno La libertà di manifestazione del pensiero e lalibertà religiosa nelle società multiculturali, Università della Calabria, Cosenza 7 aprile2008.SOMMARIO: 1. Nascita e sviluppo del sistema consociativo - 2. La società olandesee la presenza organizzata del culto mussulmano nel Paese - 3. Alcuneconsiderazioni generali sul sistema di relazioni tra Confessioni religiose e Stato inOlanda: il nuovo consociativismo olandese.

  13. Kui prooviks uuesti alustada... / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2005-01-01

    Näitus "Maalimine keelatud" Tallinna Kunstihoones, kuraator Anders Härm. Esindatud on kunstnike Davide LaRocca, Ylva Ogland'i, Ritums Ivanovs'i, Daniele Galliano, Sophia Schama, Matts Leiderstam'i, Jani Leinonen'i, Mari Sunna, Tõnis Saadoja jt. looming

  14. Quando i romanzi facevano male alla salute

    Directory of Open Access Journals (Sweden)

    Stefano Calabrese

    2016-07-01

    Full Text Available Come sostengono neuroscienziati e cognitivisti, attualmente le narrazioni finzionali svolgono un ruolo essenziale nell'aiutare gli individui a elaborare schemi predittivi circa la realtà; inoltre, la fruizione immersiva nelle narrazioni attuali costituisce una palestra in cui i lettori indossano empaticamente le emozioni dei personaggi. Questo accade perché oggi il dinamismo del contesto storico-culturale della globalizzazione ha reso necessaria una maggiore abilità nel mind reading e una profonda competenza nelle metarappresentazioni. Al contrario, nel secolo diciannovesimo le narrazioni producevano nei lettori cattive identificazioni perché il contesto storico-culturale non era per così dire all'altezza delle finzioni narrative. Lo dimostra il caso della ricezione normanna di Madame Bovary. As neuroscience and cognitive psychology assert, nowadays fictional narrative holds an essential role helping individuals elaborating predictive schemes of reality; furthemore, immersive fruition of fiction constitutes a mental training in which readers wear characters’ emotions through empathy. This happens because the dynamic historical and cultural context of globalization requires an always more sophisticated ability in mind reading and a strong competence on meta-representations. On the contrary, during 19th Century narrations produced in readers incomplete identifications, due to a context still historically and culturally backward for narrative fiction, as exemplarily demonstrated by Madame Bovary’s Norman reception.

  15. Dalla crisi finanziaria alla crisi reale

    Directory of Open Access Journals (Sweden)

    Carlo D'Adda

    2010-03-01

    Full Text Available  The financial crisis of 2008 is put in relation with two bubbles, financial and housing. Easy credit is at the origin of both bubbles. Risky bonds were issued to mobilize mortgages originated in the housing market, and bad bonds entered a fantastic number of institutional and private portfolios all over the world without any perception of the their risk. Unfortunately, bank credit to speculators was abundant and fed the final growth of the bubbles. When fears started to spread, the fall was immediate and expectations impaired very rapidly. The main aggregate demand components were severely curtailed and production fell as well. This is the crisis of the real economy. Fortunately, as opposed to what happened in 1929, the interventions of central banks and governments have been of an unprecedented size. The bail out of insolvent banks in particular has been providential. The exit from the current crisis, however, will surely be slow. JEL Code: E44, G01, G10Keywords: Cultura economica, Crisi finanziaria, Regole  

  16. Un importante contributo alla lessicografia italo-slovena: Sergij Šlenc, Véliki italijansko-slovenski slovar - Il grande dizionario italiano-sloveno, redatto da Branko Madžarevič, Državna založba Slovenije, Ljubljana 1997

    Directory of Open Access Journals (Sweden)

    Mitja Skubic

    1998-12-01

    Full Text Available E' uscito un nuovo dizionario italiano-sloveno. Conviene sottolineare nuovo, non tanto per la data recente, e nemmeno per la rispettabile mole, 1296 pagine, quanto per la ricchezza che il dizionario contiene; vi sono più di 80.000 lemmi. L' autore, noto italianista dell'Università di Lubiana, ha introdotto alla materia abituale di un vocabolario   bilingue molte novita: vi ha incluso   parecchie parole straniere recentemente  entrate  nell'uso  dell'italiano,  ampia è infatti  la parte  di neologismi di varie arti e tecnologie umane; sono rappresentate tutte, o quasi, il cui lessico a poco a poco penetra nel linguaggio quotidiano di un italiano. Non per questo è trascurata la parte della lingua letteraria che, forse, aveva contrassegnato eccessivamente la maggioranza dei vocabolari bilingui. lnoltre, un largo spazio è dedicato alla tradizione popolare. Numerosi sono i detti e i proverbi italiani: se sono preziosi per un etnologo perché nascondono la saggezza, o meglio, l'anima di un popolo, non meno cari e utili sono per chi insegni o apprenda una lingua straniera giacché aiutano non poco ad afferrare il significato di un vocabolo, soprattutto quello traslato.

  17. Corrosion evaluation of friction stir welded lap joints of AA6061-T6 aluminum alloy%AA6061-T6合金搅拌摩擦焊搭接接头的腐蚀性能评价

    Institute of Scientific and Technical Information of China (English)

    Farhad GHARAVI; Khamirul A. MATORI; Robiah YUNUS; Norinsan K. OTHMAN; Firouz FADAEIFARD

    2016-01-01

    采用氯化钠+过氧化氢溶液浸泡试验研究AA6061-T6铝合金搅拌摩擦焊搭接接头的腐蚀行为。采用循环动电位极化测试、扫描电子显微镜和能谱仪表征腐蚀形貌,揭示焊接区与基体合金的腐蚀机理。研究了焊接接头的显微组织和剪切强度。结果表明,与基体合金相比,焊接区在腐蚀溶液中会发生晶间腐蚀和点蚀。搭接剪切测试结果表明,所得焊接接头的拉伸剪切强度为128 MPa,超过基体合金强度的60%。电化学测试结果表明,焊核区和热影响区的保护电位比点蚀电位更负,说明焊核区与热影响区点蚀的趋势不强。基体合金抗腐蚀性比焊缝区的强,而热影响区的抗腐蚀性最差。点蚀主要源于金属间化合物边缘,因为与铝基体相比,金属间化合物的自腐蚀电位更高而成为阴极。由于焊缝区的金属间化合物增加,腐蚀电偶增加,焊缝的抗腐蚀性降低。%Corrosion behavior of friction stir lap welded AA6061-T6 aluminum alloy was investigated by immersion tests in sodium chloride + hydrogen peroxide solution. Electrochemical measurement by cyclic potentiodynamic polarization, scanning electron microscopy, and energy dispersive spectroscopy were employed to characterize corrosion morphology and to realize corrosion mechanism of weld regions as opposed to the parent alloy. The microstructure and shear strength of welded joint were fully investigated. The results indicate that, compared with the parent alloy, the weld regions are susceptible to intergranular and pitting attacks in the test solution during immersion time. The obtained results of lap shear testing disclose that tensile shear strength of the welds is 128 MPa which is more than 60% of the strength of parent alloy in lap shear testing. Electrochemical results show that the protection potentials of the WNZ and HAZ regions are more negative than the pitting potential. This means that the WNZ and

  18. Numerical Simulation of Lap-shear Strength of Self-piercing Riveting Joint%自冲铆接接头拉剪强度的数值模拟研究

    Institute of Scientific and Technical Information of China (English)

    钟毅; 林健; 雷永平; 尹兰礼

    2011-01-01

    The numerical simulation method for predicting the lap shear strength of self-piercing riveting (SPR) joint is studied. The finite element models of 0. 7mm low carbon steel+0. 7mm low carbon steel similar material and 0. 7mm low carbon steel + 2mm AA6061 dissimilar material SPR joints are established based on the experimental results. Then, considering the contact conditions between the different parts of the SPR joint, the lap shear processes of these SPR joints are simulated. It can be seen from the simulating results that the failure modes of the similar and dissimilar materials SPR joints are different: for the steel-steel similar material SPR joint, the rivet is pulled out from the joint while the failure occurs in the base metal for steel-Al dissimilar materials SPR joint. Finally, experiments of SPR joint's lap shear process are carried out to validate the simulating results. It is shown that the simulating results of SPR joint's shear strength have a good agreement with the experimental results. That suggests the developed FE model, considering the contact conditions of the materials and the joint's shape, can be used to predict the shear strength and failure mode of SPR joint.%针对自冲铆接接头拉剪强度的数值模拟方法进行研究.对0.7mm低碳钢+0.7mm低碳钢同种材料自冲铆接接头,0.7mm低碳钢+2mm铝合金的异种材料自冲铆接接头的剪切拉伸过程建立有限元模型,并对其剪切拉伸过程及铆钉与板材的受力变形情况和破坏失效模式进行了模拟和分析.从数值模拟结果可以看出,钢-钢同种材料与钢-铝异种材料自冲铆接接头遵循不同的破坏模式:在钢-钢自冲铆接接头拉剪过程中,铆钉从接头处脱出从而造成接头失效;而钢-铝铆接接头失效则发生在母材上.对模拟结果进行了试验验证,结果表明,有限元模拟结果与试验结果吻合良好.因此,综合考虑了材料接触形式和接头形状的有限元模型能够

  19. Research on Finite Element Analysis of Multi-rivet Lap Metallic Joints%多排钉金属连接接头有限元分析方法研究

    Institute of Scientific and Technical Information of China (English)

    高扬; 孙秦

    2012-01-01

    Solving the problem of stress concentration for aircraft structure is the key to prolong the fatigue life of it.The load distribution of the joint with rivets and the stress concentration around the holes are analyzed which are based on finite element method.After analyzing the static strength of the model in detail,the stress distribution of these holes can be obtained,and the stress concentration coefficients of the critical point also can be calculated.At the same time,the configuration dimensions of riveted lap joints are studied for optimization design,which is used for redesign and able to reduce stress,considering the influence on load distribution and stress concentration of the joint.Thus some useful conclusions have been obtained which are of significant engineering application value for calculating fatigue performance of joint structure and can be used as a reference in analysis on the lap joint structure.%解决飞机结构中接头的应力集中问题是延长飞机结构寿命的关键。采用有限元方法对多钉结构的金属连接件的载荷分配进行了研究,并对铆接接头的细节进行应力分析,给出了接头各细节处的应力分布,从而确定了各铆钉孔边危险点处的应力集中系数。同时探讨了台阶形搭接接头的几何构形对铆钉传递载荷和钉孔边危险点处应力集中系数的影响,对其部分几何构形参数进行了优化设计,得到有效降低孔边应力的构形方案。该方案对接头结构的疲劳性能分析具有一定的参考价值。

  20. Constitutional osteochondrodysplasias identifiable a birth. A short review on the state of the art in radiodiagnostic in the late 20. century; Le osteocondrodisplasie costituzionali riconoscibili alla nascita. Una breve rassegna sullo studio dell'arte radiodiagnostica sul finire del 20. secolo

    Energy Technology Data Exchange (ETDEWEB)

    Gugliantini, P.; Maragliano, G.; Piscione, M.; Licata, G. [Azienza Ospedaliera San Giovanni - Addolorata, Rome (Italy)

    1999-03-01

    The value of a systematic radiologic analysis in constitutional osteochondrodysplasias remains underestimated by both neonatologists and radiologists. The authors report the clinical experience of the Department of Neonatology and Neonatal Intensive Cure Unit of St. John Hospital in Rome with constitutional osteochondrodysplasias identifiable at birth. The authors justify the relatively high incidence of constitutional osteochondrodysplasias in this study (66% versus an average incidence of 0,076% reported in the world population) on the basis of: a) an increasing number of high-risk newborns in the intensive cure; b) an improvement in our clinical and radiologic diagnostic skill. They conclude that the state of the art of diagnostic of constitutional osteochondrodysplasiasin still based on the first plain X-ray examination performed at birth because of cardiorespiratory and/or abdominal diseases in the newborn. [Italian] L'importanza dell'analisi radiologica sistematica delle osteocondrodisplasie costituzionali e' tutt'ora sottostimata sia dai neonatologi che dai radiologi. Pertanto riferiamo l'esperianza clinico-radiologica di osteocondrodisplasie costituzionali identificabili alla nascita nel Dipartimento di Neonatologia e Terapia Intensiva Neonatale dell'Ospedale San Giovanni di Roma. L'articolo conclude giustificando la relativamente alta incidenza di ostecondrodisplasie costituzionali della casistica in esame (0,66% contro l'incidenza media dei 0,076% riferita alla popolazione mondiale) sulla base di: a) crescente numero di neonati con alto rischio ricoverati nella unita' di terapia intensiva; b) miglioramento delle capacita' diagnostiche, sia cliniche che radiologiche.

  1. Selective expression of latency-associated peptide (LAP) and IL-1 receptor type I/II (CD121a/CD121b) on activated human FOXP3+ regulatory T cells allows for their purification from expansion cultures

    Science.gov (United States)

    Andersson, John; Hardwick, Donna; Bebris, Lolita; Illei, Gabor G.

    2009-01-01

    Although adoptive transfer of regulatory T cells (Foxp3+ Tregs) has proven to be efficacious in the prevention and treatment of autoimmune diseases and graft-versus-host disease in rodents, a major obstacle for the use of Treg immunotherapy in humans is the difficulty of obtaining a highly purified preparation after ex vivo expansion. We have identified latency-associated peptide (LAP) and IL-1 receptor type I and II (CD121a/CD121b) as unique cell-surface markers that distinguish activated Tregs from activated FOXP3− and FOXP3+ non-Tregs. We show that it is feasible to sort expanded FOXP3+ Tregs from non-Tregs with the use of techniques for magnetic bead cell separation based on expression of these 3 markers. After separation, the final product contains greater than 90% fully functional FOXP3+ Tregs. This novel protocol should facilitate the purification of Tregs for both cell-based therapies as well as detailed studies of human Treg function in health and disease. PMID:19299332

  2. Alla fine della vita: bioetica e medicina alla ricerca di un confine

    Directory of Open Access Journals (Sweden)

    Barcaro, Rosangela

    2015-09-01

    Full Text Available [At the end of life: bioethics and medicine looking for a boundary]. Bioethics, neuroscience, medicine are contributing to a debate on the definition and criteria of death. This topic is very controversial, and it demonstrates clashing views on the meaning of human life and death. Official medical and legal positions agree upon a biological definition of death as irreversible cessation of integrated functioning of the organism as a whole, and whole-brain criterion to ascertain death. These positions have to face many criticisms: some scholars speak of logical and practical inconsistency, some others of invalid scientific theory about the supreme integrator. In this paper some criticisms are exposed and discussed in order to reconstruct the state of the art in bioethical debate.

  3. Modulated quaternion lapped transform and its application in dual color image watermarking%四元数调制重叠变换及其在双彩色图像数字水印中的应用

    Institute of Scientific and Technical Information of China (English)

    陈北京; 田翠翠; 戴慧; 王定成; 舒华忠

    2013-01-01

    为了整体处理彩色图像,基于四元数彩色图像表示方法和四元数代数理论,定义了四元数调制重叠变换(MQLT),将传统的主要针对灰度图像的复数调制重叠变换(MCLT)推广应用于彩色图像处理中。然后,通过建立 MQLT 系数与彩色图像三通道传统 MCLT 系数之间的关系,分析了 MQLT 系数的对称特性,并基于 MQLT 变换及其系数对称特性,结合 Arnold 变换和冗余嵌入策略,提出了一种鲁棒的双彩色图像盲水印算法。为了避免水印能量损失,修改系数嵌入水印时遵循了系数的对称性。所提算法充分利用了四维频域空间,将有意义的彩色水印嵌入到彩色载体图像中。实验结果表明,所提算法在不可见性和鲁棒性2个方面均明显优于采用传统三通道分别处理思想的 MCLT 算法。%In order to process color images holistically,by using the quaternion representation of col-or images and the algebra of quaternion,modulated quaternion lapped transform (MQLT)is defined to generalize the conventional modulated complex lapped transform (MCLT)for gray images and applied into the process of color images.Then,the symmetric properties of the MQLT coefficients are analyzed after the establishment of the relationships between the MQLT coefficients and the MCLT coefficients of three channels.Finally,combining with the Arnold transform and multiple re-dundant embedding strategy,a robust blind dual color image watermarking algorithm is proposed based on MQLT and its symmetric property.In order to avoid watermark energy loss,the MQLT coefficients are modified to embed watermarks according to their symmetric properties.The proposed algorithm fully utilizes four-dimensional MQLT domain and embeds a meaningful color watermark into a color host image.The experimental results show that the proposed algorithm is superior to the conventional component-wise algorithm based on the MCLT in terms of

  4. 基于ANSYS/FE-SAFE的单搭自冲铆接头的疲劳分析%Fatigue Analysis of Single Lap Self-piercing Riveted Joints based on ANSYS/FE-SAFE

    Institute of Scientific and Technical Information of China (English)

    张玉涛; 何晓聪; 严柯科; 冯模盛

    2011-01-01

    Using the finite element analysis software ANSYS, the single lap self-piercing riveted joints model was established, the model will be used in static analysis. Based on static analysis, used ANSYS/FE-SAFE to analyze the fatigue life and safety factor under conditions of the sine excitation load, from the analysis of that, drew a conclusion that fatigue damage and fatigue destroy were both founded on the faying surface of upper sheet and rivet. From the safety factor and cloud maps, we can conclude that operating safety factor is bigger than permitted safety factor, which meet the need. It can provide reference for further research through fatigue analysis using ANSYS/FE-SAFE.%采用有限元分析软件ANSYS建立单搭自冲铆接头模型,对接头进行静力分析,在此基础上结合ANSYS/FE SAFE,基于正弦激励载荷,对单搭自冲铆接头的疲劳寿命和安全系数进行了分析,得出自冲铆接头的最大应力位置与疲劳破坏位置一致,均为上板与铆钉头接触的部位.从安全系数云图中可得到工作安全系数大于许用安全系数,满足条件要求.用ANSYS/FE-SAFE软件来进行疲劳分析可以为下一步研究提供一定的参考.

  5. The Ultra-thin Main Insulation Structures Lapped with Dry-mica Tapes for High Voltage Motors%少胶绝缘高压电机超薄型主绝缘结构研究

    Institute of Scientific and Technical Information of China (English)

    曾彩萍

    2016-01-01

    Effect of the insulation materials and structures lapped with dry-mica tapes on the main insulation properties has been systematically investigated. The ultra-thin main insulation structures of 6 kV and 10 kV grades have been successfully manufactured by alternative half-overlapped with the designed glass or PET mica tapes, followed by VPI with anhydride-cured epoxy resins and corona protection with low electrical resistant materials, and exhibited excellent insulation properties and long thermo-electric aging life. The high voltage motors fabricated with the ultra-thin main insulation structures are lowered in the servicing temperature rise, obvious lightweight and reduced in production cost.%系统研究了绝缘材料及绕包结构等对高压电机主绝缘性能的影响。采用玻璃云母带与薄膜云母带为主绝缘绕包材料,通过交替半迭包工艺绕包的云母绝缘结构,经高性能环氧酸酐树脂( VPI)浸渍固化及薄型低阻防晕材料保护后制作的6 kV和10 kV超薄型高压电机主绝缘结构,表现出优良的电性能和老化寿命,实现了高压电机主绝缘的明显减薄。采用该超薄型绝缘结构制造的高压电机绕组温升显著降低,体积明显缩小,制造成本下降。

  6. Study on Embedded Coding Compression Algorithm Based on Lapped Biorthogonal Transform%一种基于双正交重叠变换的嵌入式编码算法研究

    Institute of Scientific and Technical Information of China (English)

    黄臣; 田昕; 李涛; 田金文

    2012-01-01

    Low-complexity block-based Lapped Biorthogonal Transform which can effectively reduce blocking effect is applied in Joint Photographic Expert Group's newest standard for static image coding, whose most admirable advantage is the convenience of being implemented in hardware and its low complexity in both memory-occupying and time-consuming. To avoid its weakness in the disability of compression rate control, a resolution was given, after deeply researching into this new algorithm, the Bit Plate Encoding was used to substitute the original quantization process to achieve accurate rate-controlling.%双正交变换为基于块的低复杂度变换,而且与传统的离散余弦变换相比,一定程度上减小了变换后图像的块效应,因而被采纳入联合图像专家组织JPEG(Joint Photographic Expert Group)最新制定的静态图像编码标准JPEG XR中.为了能够改善其无法实现码流长度控制的缺陷,文章深入研究了JPEG XR的编码技术,提出了一种针对固定压缩比的编码算法.主要思路是通过对双正交变换后的系数进行嵌入式位平面编码,取代了原先的量化步骤,使得压缩码流长度可以精确控制.

  7. 基于有限元理论的飞机蒙皮搭接结构腐蚀红外检测建模分析%The Analysis of Corrosion Modeling for Aircraft Lap Joint Structure Based on Finite Element Theory and the Infrared NDT

    Institute of Scientific and Technical Information of China (English)

    田云飞; 曹宗杰

    2012-01-01

    Corrosion of lap joint structure directly endangers the life and structural strength of the aircraft,and the safety of flight.For corrosion is in the highly hidden locations,conventional nondestructive inspection is not satisfactory.Through the establishment of the aircraft lap joint structure model,using ANSYS software to simulate the testing environment,the surface temperature distribution is calculated and the surface heat characters can be known by finite element analysis in the paper.The emphasis is placed on testing the feasibility of infrared NDI from the corroded area,corrosion depth,surface scratches,and thus providing a theoretical basis of using infrared NDI to inspect lap joint structure.%飞机蒙皮搭接结构的腐蚀问题直接危害飞机的使用寿命和结构强度,制约飞行安全。由于腐蚀发生位置隐蔽性高,常规无损检测的检测效果不理想。利用有限元分析方法,使用AN-SYS软件模拟检测环境,通过建立飞机蒙皮搭接结构模型,计算模型表面温度场分布。重点从腐蚀面积、腐蚀深度、表面划伤等问题对红外检测技术的可行性进行了分析,为其对蒙皮搭接结构检测的应用提供了理论依据。

  8. Misure alternative alla detenzione e promozione dei diritti tra prossimità e sollecitudine / Mesures alternatives à l’incarcération et promotion des droits entre proximité et sollicitude / Alternative measures to detention and promotion of the rights between proximity and concern

    Directory of Open Access Journals (Sweden)

    Bisi Roberta

    2016-12-01

    Full Text Available I percorsi che portano ad usufruire di misure alternative alla detenzione sollecitano riflessioni circa l’importanza delle relazioni, dei processi ed anche delle modalità di costruzione degli interventi. Pertanto, è oltremodo necessario che, grazie a comparazioni verificate in altri Paesi e il progetto europeo di ricerca al quale è dedicato questo numero della Rivista ne è un esempio, vengano formulate e trasferite sul piano operativo contenuti e proposte che dovranno scaturire ed essere rilevate con iniziative di studio, di ricerche, di verifiche e di sperimentazioni poiché l’esigenza di libertà, che è alla base della detenzione, pone problemi di fondo e ne sollecita soluzioni, trattandosi di beni raramente e adeguatamente recuperabili o ricostruibili in pieno. Les parcours qui conduisent à bénéficier de mesures alternatives à l’incarcération sollicitent des réflexions sur l’importance des relations, des processus, mais aussi sur les modalités d’élaboration des interventions. Par conséquent, grâce aux comparaisons avec d’autres pays, et au projet de recherche européen auquel ce numéro de la « Revue de Criminologie, Victimologie et Sécurité » est consacré, il est plus que nécessaire que les propositions et les suggestions formulées soient mises en ɶuvre. Ces dernières devront être élaborées à partir d’études, de recherches, de vérifications et d’essais puisque l’exigence de la liberté, qui est à la base de l’incarcération, pose des problèmes majeurs et demande des solutions, s’agissant de biens rarement et adéquatement récupérables ou pouvant être pleinement reconquis. The routes leading to benefit from alternative measures to detention encourage to reflect on the importance of those relationships and procedures involved in the development of the relevant required interventions. Thanks to the comparisons made in other countries (and the European research project examined in this

  9. 机翼壁板斜搭接钉载分配的数值研究%Numerical Study on Pin Load Distribution of Scarfed Lap Joint of Airfoil

    Institute of Scientific and Technical Information of China (English)

    元辛; 闫五柱; 刘军; 岳珠峰

    2011-01-01

    The pin load distribution of scarfed lap joint was studied using ABAQUS software. The connects be-tween countersunk rivet and sheet, upper and lower sheets were simulated by introducing the static state contact arithmetic. The friction between jointed sheets, the clamping force of the countersunk rivet, interference-fit as well as the boundary conditions of the whole modes were considered comprehensively in the analysis. The calculated re-sults agree well with experiment data. It is proved that using static state contact arithmetic with ABAQUS software to simulate the pin load distribution is feasible. The study shows that reducing the minimum thickness of jointed sheet can average. Meanwhile, the local stress concentration is reduced remarkably.%利用ABAQUS软件对壁板斜搭接件各钉承载比例进行了三维有限元分析.在分析过程中采用静态接触算法模拟钉与板的连接、板与板的搭接,并综合考虑搭接片之间的摩擦和接触、沉头铆钉上的预紧力、铆钉干涉量以及整个模拟试验件的边界约束条件.分析计算结果与试验结果基本一致,说明采用该软件和静态接触算法来模拟计算钉载分配是可行的.研究结果表明,在一定的使用范围内,对于机翼壁板斜搭接结构,减少搭接片最小厚度,一、四排钉传载率下降,二、三排钉传载率上升,钉载分配趋于均匀,且孔周局部应力集中也有所降低.

  10. Abortamento na adolescência: da vida à experiência do colo vazio - um estudo qualitativo Abortion in the adolescence: from life to the experience of the empty lap - a qualitative study

    Directory of Open Access Journals (Sweden)

    Leila Maria Vieira

    2010-10-01

    pregnant; living the abortion and remaking of the life plan. From the analyses of the process it was developed the central category: "Abortion on adolescence: from life to the experience of empty lap". The occurrence of abortion in the adolescence causes different feelings and may reach bio psychosocial circles.

  11. Oma aja laps / Tiina-Mall Kreem

    Index Scriptorium Estoniae

    Kreem, Tiina-Mall

    2005-01-01

    Tartu Ülikooli kiriku ehitusplaanidest 19. sajandi kohalikus ja rahvusvahelises kontekstis. Arhitektide Johann Wilhelm Krause, Moritz Hermann Jacobi (1801-1874), David Olltoffi (Oltow), Karl Rathhausi jt. plaanidest

  12. Kuidas eesti laps vormimoodustuse omandab / Reili Argus

    Index Scriptorium Estoniae

    Argus, Reili, 1967-

    2008-01-01

    Lisaks reeglipõhisele moodustusele tuleb lapsel omandada hulk erandlikke muutemalle, samuti peab tüvele tunnuste lisamise kõrval saama selgeks ka astme- ja tüvevahelduse. Eesti keele omandamine võrdluses teiste keelte omandamisega

  13. In the Lap of Lu xury

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    When the world's largest luxury group comes to town, it's a pretty good bet they've done their homework and know a good thing when they see it. On November 18, Bernard Amault, Chairman of the LVMH Group, attended the opening ceremony of Louis Vuitton's new flagship store in Beijing. Confident about its current 12 Louis Vuitton stores in China and the entire

  14. Oma aja laps / Tiina-Mall Kreem

    Index Scriptorium Estoniae

    Kreem, Tiina-Mall

    2005-01-01

    Tartu Ülikooli kiriku ehitusplaanidest 19. sajandi kohalikus ja rahvusvahelises kontekstis. Arhitektide Johann Wilhelm Krause, Moritz Hermann Jacobi (1801-1874), David Olltoffi (Oltow), Karl Rathhausi jt. plaanidest

  15. Manufacturing processes 2 grinding, honing, lapping

    CERN Document Server

    Klocke, Fritz

    2009-01-01

    Presents a view of the most common machining and non-machining manufacturing processes. This volume describes the characteristics of abrasive tools, their design and manufacturing, followed by the fundamentals of grinding fluids. It also discusses grinding of different materials (steel, cast iron, hard and brittle materials, nickel and titanium).

  16. Textiles. Teacher Edition. Marketing Education LAPs.

    Science.gov (United States)

    Hawley, Jana

    This learning activity packet is designed to help students to acquire a competency: how to use knowledge of textile design to gain expertise in preparation for a career in the fashion industry. The unit consists of the competency, four objectives, suggested learning activities, transparency masters, and a pretest/posttest with answer keys.…

  17. Design Concepts. Teacher Edition. Marketing Education LAPs.

    Science.gov (United States)

    Hawley, Jana

    This learning activity packet is designed to help prepare students to acquire a competency: how to use design concepts in preparation for a career in the fashion industry. The unit consists of the competency, four objectives, suggested learning activities, transparency masters, and a pretest/posttest with answer keys. Activities include a…

  18. Laps vajab veel riigi toetust / Kalev Kotkas

    Index Scriptorium Estoniae

    Kotkas, Kalev, 1960-

    2001-01-01

    Ilmunud ka: Virumaa Teataja, 5. sept. 2001, lk. 7; Meie Maa, 5. sept. 2001, lk. 4; Lääne Elu, 6. sept. 2001. lk. 4; Valgamaalane, 6. sept. 2001, lk. 2; Koit, 6. sept. 2001, lk. 6; Nädaline, 13. sept. 2001, lk. 4; Vooremaa, 20. sept. 2001, lk. 4; Sakala, 26. sept. 2001, lk. 2; Järva Teataja, 27. sept. 2001, lk. 2. Lastega perede toetamisest. Autor: Rahvaerakond Mõõdukad. Parlamendisaadik

  19. Chronic Mammalian Toxicological Effects of LAP Wastewater.

    Science.gov (United States)

    1983-06-01

    Adenocarcinoma 1 3 2 2 5 4 Subcutaneous Fibroma 2 2 2 3 3 4 Hemangiopericytoma 1 0 0 2 0 0 Hemangiosarcoma 0 1 0 0 2 0 Myxoma 1 0 0 2 0 0 125 Table 38...Hyperplasia, mild 0 2 0 0 3 0 U Inflammation, chronic 0 1 0 0 2 0 Adenoma 3 0 0 5 0 0 Adenocarcinoma 1 0 2 2 0 3 Fibroma 1 0 0 2 0 0 Fibroadenoma 20 6t 2t 31...Neurilemoma 0 1 0 0 2 0 Foot Hemangiosarcoma 1 0 0 2 0 0 Jaw Squamous cell carcinoma 1 1 0 2 2 0 Subcutaneous Adenocarcinoma 0 0 1 0 0 2 Fibroma 1 1

  20. Laps vajab veel riigi toetust / Kalev Kotkas

    Index Scriptorium Estoniae

    Kotkas, Kalev, 1960-

    2001-01-01

    Ilmunud ka: Virumaa Teataja, 5. sept. 2001, lk. 7; Meie Maa, 5. sept. 2001, lk. 4; Lääne Elu, 6. sept. 2001. lk. 4; Valgamaalane, 6. sept. 2001, lk. 2; Koit, 6. sept. 2001, lk. 6; Nädaline, 13. sept. 2001, lk. 4; Vooremaa, 20. sept. 2001, lk. 4; Sakala, 26. sept. 2001, lk. 2; Järva Teataja, 27. sept. 2001, lk. 2. Lastega perede toetamisest. Autor: Rahvaerakond Mõõdukad. Parlamendisaadik

  1. Analysis of Deformation in the Manufacturing Process of Seal Ring with Wavy Face Using the Pre-deformation Plane Lapping Method%周向波度密封环预变形平面研磨加工中的变形分析

    Institute of Scientific and Technical Information of China (English)

    周平; 戴恒震; 金洙吉; 王宇; 康仁科; 郭东明

    2015-01-01

    端面周向波度密封是一种非接触机械密封,它具有泄漏低、刚度大和寿命长等优点,在核主泵和透平机械等旋转机械密封中有很好的应用前景.周向波度密封环端面面形非常复杂,加工极为困难.提出一种周向波度密封环的预变形平面研磨加工方法,并对其中最为关键的预变形过程进行了分析.通过对预变形过程中密封环变形特性的有限元分析,揭示了预紧力和密封环端面变形的关系,通过周期性反向扭矩的作用获得了满足要求的表面预变形.通过预变形夹具的研制和平面研磨工艺研究,完成了周向波度密封环的加工,证明了预变形平面研磨加工方法加工周向波度密封环的可行性.%Sealing ring with wavy face is a kind of non-contact mechanical seal, which has advantages in low leakage, high stiffness and long life. It has a good application prospect in mechanical seal structure of nuclear reactor coolant pump and turbo machine. However, the manufacture of sealing ring with wavy face is a very challenging job due to the complex curve face. A pre-deformation plane lapping method of sealing ring with wavy face is proposed here, and the pre-deformation, which is the most critical process, is analyzed. The relationship between the pre-deformation force and the end face deformation of sealing ring is revealed through finite element analysis. It is found that the required surface deformation can be obtained by applying periodic reverse torque. Through the development of pre-deformation fixture and the research of lapping technology of ring surface, sealing ring with wavy face is successfully manufactured. The possibility of the manufacturing of sealing ring with wavy face using the pre-deformation plane lapping method is verified theoretically and experimentally.

  2. Nõukogude absurd : 1960. aastate eesti kunst eksistentsialismi taustal / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2010-01-01

    Vaadeldakse eksistentsialismi kui üht võimalikku tausta 1960-ndate eesti kunstis, eksistentsialismi ja absurdi suhet ning esilekerkimiste rütmi läbi tolle aja noorte kunstnike korraldatud happening'ide, ka arutelusid kunsti filosoofilisuse, kunstilise kujundi ja inimese kujutamise ning kunstniku rolli üle

  3. Contributi alla sintassi del verbo nei dialetti veneti

    Directory of Open Access Journals (Sweden)

    Mitja Skubic Mitja Skubic

    1971-12-01

    Full Text Available A distanza di più di cento anni dal Goldoni, il teatro veneziano trova un altro genio, Giacinto Gallinar La lingua delle sue commedie, certo meno brillanti di quelle goldoniane, e piil penetrate da un realismo, crudo, a volte amaro, sembra rispecchiare assai fedelmente il veneziano parlato nella se­ conda metà del secolo scorso; il dialogo vi e spontaneo e vivo, le battute rieccheggiano spesso la parlata popolare.

  4. Kosmiline eksimus : Vene kapsel kukkus alla vales kohas / Heiki Suurkask

    Index Scriptorium Estoniae

    Suurkask, Heiki, 1972-

    2008-01-01

    Vene kosmoseaparaat laskus Kasahstanis kavandatud kohast 420 kilomeetri kaugusele, kuid korealasest teadlane Yi So-yeon, ameeriklasest astronaut Peggy A. Whitson ja venelasest pardainsener Juri Malantshenko pääsesid eluga

  5. Kodune energiakulu kontrolli alla / Leo Backman, Heigo Ensling

    Index Scriptorium Estoniae

    Backman, Leo

    2012-01-01

    Energiakulumõõturite test: Axxel HH-549, Efergy e2 (juhtmevaba mõõtur), Electric EMT707CTL, Electronic PM 498, Electronic UPM DEM1379, Energy Meter LX-0805, Eco Line EM235, Energy Saving Meter HH-549, Art.35-617 (multifunktsionaalne mõõtur), EMT7110/EMR7370 (juhtmevaba mõõtur)

  6. Avatud ja suletud Ida-Euroopa / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2009-01-01

    Näitus "Me näeme teid. Foksali galerii tegevus 1966-1989" Kumu Kunstimuuseumis 20. septembrini. Kuraator Karolina Łabowicz-Dymanus. Kujundaja Jaanus Samma. Lääne ja endise Ida-bloki riikide kunst on eksponeeritud kõrvuti

  7. Kuulus suusarada sattus uurijate luubi alla / Priit Pullerits

    Index Scriptorium Estoniae

    Pullerits, Priit, 1965-

    2006-01-01

    Vt. ka Postimees : na russkom jazõke 15. dets., lk. 11. Keskkonnainspektsiooni hinnagul Tehvandi keskuse arendamisel Otepää looduspargi maa-alal Pilkuse sihtkaitsevööndis tehtud 0,4 hektaril ebaseaduslikku lageraiet, mille käigus on kahjustatud ka metsamaa pinnast

  8. Tallinlaste arv kukkus alla 400 000 / Dagne Hanschmidt

    Index Scriptorium Estoniae

    Hanschmidt, Dagne

    2006-01-01

    Ilmunud ka: Postimees : na russkom jazõke 6. märts lk. 8. Rahvastikuregister kõrvaldas elanike nimekirjast kehtiva elamisloata isikud, mille tõttu kahanes Tallinna elanike arv 4766 inimese võrra. 1. märtsi seisuga on pealinlasi kokku 398 753 inimest

  9. Un approccio “sociale” e ontologico alla catalogazione

    Directory of Open Access Journals (Sweden)

    Oreste Signore

    2011-12-01

    Full Text Available ItLa catalogazione è basata sulla conoscenza e sulla comprensione dei legami interdisciplinari tra gli elementi informativi. L’avvento del Web ha modificato profondamente i meccanismi di accesso all’informazione, mentre Web 2.0 e Semantic Web sono due evoluzioni del Web che stanno rivoluzionando i canoni di gestione del patrimonio informativo. Il primo spostando l’accento sul contributo portato dagli utenti, il secondo enfatizzando il ruolo dei dati e dell’interconnessione tra fonti diverse di conoscenza. Il web ha fatto prestare maggiore attenzione all’interoperabilità semantica e ha portato all’adozione di schemi comuni di metadati, mentre il Web 2.0 ha spostato l’accento sull’aspetto “sociale” e sulle folksonomy. Entrambi questi approcci presentano delle limitazioni intrinseche, che vengono superate dall’adesione a principi del Semantic Web e quindi all’adozione di un approccio ontologico, con il superamento della catalogazione centrata sull’oggetto. È possibile coniugare i vantaggi dell’approccio “sociale” (partecipazione degli utenti, ampliamento delle fonti di informazione con quelli puramente ontologici (formalizzazione e condivisione della conoscenza, possibilità di dedurre nuova conoscenza mediante un’opportuna opera di mapping della scheda catalografica e l’implementazione di ambienti sociali che utilizzino le tecnologie del Semantic Web. Un’esperienza in merito è stata condotta in un progetto.EnKnowledge and linking among several disciplines are the basis of cataloguing. The Web has been a revolution in accessing information, while Web 2.0 and Semantic Web are two evolutions of the web which are changing the ways of managing information. Web 2.0 puts much emphasis on user generated content (UGC, and Semantic Web emphasizes the role of data and their linking among different knowledge bases. The web leaded to greater attention paid to the semantic interoperability, with the adoption of common metadata schemes, and Web 2.0 is characterized by the importance of the “social” aspect and folksonomies. However both the approaches show several drawbacks. Conforming to the Semantic Web principles, with the implied adoption of an ontological approach, is a way to overcome them and the item-centric traditional approach to cataloguing. It is possible to combine the advantages coming from a “social” approach (user participation, higher number of information sources with those coming from an ontological approach (representing, exporting and sharing knowledge, to infer new knowledge. This goal can be achieved through a mapping of catalog cards into ontology and the implementation of social environments based on Semantic Web technologies. A project has been a test bed.

  10. Dalla teoria alla politica: l'economia come professione

    Directory of Open Access Journals (Sweden)

    A. CAIRNCROSS

    2013-10-01

    Full Text Available The paper is a contribution to a series of recollections and reflections on the professional experiences of distinguished economists which the Banca Nazionale del Lavoro Quarterly Review started in 1979. Alec Cairncross recalls how he came to study economics by accident and his subsequent career in the field.  JEL Codes: B31Keywords: Alec Cairncross, theory, policy, reflections

  11. Muutused transiidis panid uusi lahendusi otsima / Roger Allas

    Index Scriptorium Estoniae

    Allas, Roger

    2008-01-01

    Transiidikonverentsil Transestonia tehti kokkuvõte 2007. aasta transiidimahtudest ja otsiti lahendusi tulevikuks. Vt. samas: Tanel Raig. Juhtparteid vaatavad transiidi arendamisel eri suundades; Isamaa ja Res Publica Liidu kommentaar transiidi ja konteinerterminali rajamise kohta

  12. L’interfaccia testo/lettore: dal videogame alla letteratura

    Directory of Open Access Journals (Sweden)

    Marco Caracciolo

    2011-04-01

    Full Text Available This essay explores the relationship between the reader’s engagement with literature, and in particular with narrative texts, and the player’s interaction with videogames. It builds on the concept of “interface,” arguing that in videogames the interface is the layer (both physical and conceptual that enables players to intervene meaningfully in the game world. According to recent, second-generation cognitive science, meaning is grounded in the embodied interaction between an organism and its environment; it is such basic meaning that players generate by acting on the interface of the game. The interface can, then, be thought of as a hermeneutic space. The author goes on to argue that this approach can be applied, with important modifications, to print narratives. In his theory of “negativity,” Wolfgang Iser came very close to the idea that texts have an interface through which readers can participate in the meaning-making process. Despite being conceptually mediated and propositional, interpretive meanings are derived from simple, embodied interactions with an environment. This is why, the author concludes, playing a videogame can be seen as a metaphor for the way readers play with the meanings of a story, within the text’s hermeneutic space.

  13. Duši alla sauna / Margit Aedla

    Index Scriptorium Estoniae

    Aedla, Margit, 1970-

    2007-01-01

    Duraviti multifunktsionaalne värviline duširuum. Electroluxi Design Lab'07 konkursi finalisti Joao Diego Schimansky Fog Shower (ududuš). Väiksematesse kodudesse sobiv Muoto mobiilne aurusaunatool Muoto-Steam Deluxe

  14. Pre-scritto alla logica di una scienza delle immagini

    Directory of Open Access Journals (Sweden)

    Michele Di Monte

    2012-12-01

    Full Text Available According to Gottfried Boehm and W.J.T. Mitchell the science of images is not yet ready to write its own history. However, the present paper tries to focus and discuss some controversial points that we have to take as preliminary ontological and epistemological conditions for any kind of Bildwissenschaft: the close relationships between definition and identification of images, their theoretical and historical identity, the cognitive status of their perception and content, the epistemic dimension of image experience.

  15. Non come un romanzo. Retoriche scolastiche ed educazione alla lettura

    Directory of Open Access Journals (Sweden)

    Emanuela Bandini

    2014-05-01

    Full Text Available One of the long-term goals of literary education in secondary school should be the training of assiduous, capable and independent young readers. But, in reality, in Italian institutions reading education suffers from inadequate attention and ineffective and obsolete routines. This paper aims to highlight contradictions in scholastic rhetoric, both institutional and didactic, that cause the impressive amount of non-readers among young Italians: ministerial directives that lack in regulatory, theoretical, and methodological frameworks (the new Indicazioni Nazionali, but that sometimes exceed in requiring specific contents (the 'untouchable' Promessi sposi, a poetry-oriented canon; the structural conditions of the pedagogical apparatus (Massa 1987 that clash against the kind of fruition required from a novel, giving rise to common practices such as anthological fragmentation and an emphasis on text analysis and test-oriented didactics, rather than focusing on developing real and efficient reading skills. Finally, examples of didactic practices will be given, with the purpose of conciliating the necessary methodological accuracy and the acquisition of reading skills with a revaluation of reading pleasure and the experiential and essential value that it can and should have for every adolescent.

  16. Line graphs e contrazioni: un approccio rigoroso alla space syntax

    CERN Document Server

    D'Autilia, Roberto

    2015-01-01

    The methods of the space syntax have been the subject of extensive discussion, and several techniques to identify the axis lines have been proposed. The space syntax can be represented in terms of line graph, a graphs defined on the edge of a given primary graph. By means of the line graph algorithms, a system of labels defined on the edges of the primary graph is transformed into a system of labels on the vertices of the line graph. The contraction of adjacent edges with the same label allows to build a more general graph than those generated with the methods of the space syntax. By means of the functions implemented in Mathematica is therefore possible to redefine the space syntax on any system of urban quantities (labels) and reproduce the results of the axial lines as a special case. As an example is discussed a possible application of the method to the urban noise analysis.

  17. Kõik failid on juba alla laetud! / Eve Arpo

    Index Scriptorium Estoniae

    Arpo, Eve

    2008-01-01

    Berliini iga-aastasest kunsti- ja digitaalkultuuri festivalist "Transmediale" alapealkirjaga "Conspire...", kus käsitleti privaatsuse kadumist, info vaba levikut, hirmu, kopeeritavust, unikaalsust. Võitis ameeriklaste Julia Meltzeri ja David Thorne video "Not a Matter of If but When". Raivo Kelomehe kommentaarid

  18. Laicità come strumento di educazione alla convivenza

    Directory of Open Access Journals (Sweden)

    Giovanni Cimbalo

    2011-03-01

    Full Text Available SOMMARIO: 1. Nozione - 1.1. La laicità come valore - 1.2 Le radici non religiose della laicità - 2. La laicità come strumento di governo - 2.1. Dei gruppi - 2.2. Delle persone - 3. Lo status di cittadino - 3.1. La transizione verso lo status di cittadino - 3.2. L’acquisizione della cittadinanza - 3.3. Verso il superamento dello status di cittadino - 4. Le relazioni con i gruppi - 4. 1. Il pluralismo confessionale - 4.2. Le organizzazioni filosofiche non confessionali - 5. La libertà di pensiero come valore - 6. Dialettica della tolleranza e pluralismo etico - 6.1. Consociativismo e laicità - 7. La laicità come strumento di circolazione e omogeneizzazione del diritto: a nell’Unione Europea; b nel diritto internazionale - 8. La laicità nell’ordinamento giuridico italiano: un caso di subordinazione a formanti esterni - 8.1. L’apporto dell’elaborazione culturale - 8.2. Degli ordinamenti esterni - 8.3. Il condizionamento della legislazione a carattere consociativo - 9. Esigenze e prospettive di libertà.

  19. Aqui y Alla en California. (Here and There in California).

    Science.gov (United States)

    Galarza, Ernesto

    One in the series "Coleccion Mini-Libros" (Mini-Book Collection) written in Spanish as an enrichment tool for the Spanish speaker, the booklet is a compilation of photographs accompanied by brief descriptions of various points of beauty and interest throughout the State of California. Among the points of interest described are La Sierra Nevada,…

  20. Introduzione alla meccanica razionale elementi di teoria con esercizi

    CERN Document Server

    Biscari, Paolo

    2016-01-01

    Il libro mira a fornire le basi di Meccanica Razionale, corredando l'esposizione teorica con un alto numero di esempi ed esercizi, di tutti i quali si fornisce la soluzione.  Il testo è particolarmente indicato per i corsi di breve o media durata, e può servire da appoggio a corsi che si sviluppino al secondo, o anche al primo anno del corso di studi universitario.

  1. Alice Kask : Maalid ja joonistused = Paintings and drawings / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2007-01-01

    Maalikunstnik Alice Kase loomingust, mis on pälvinud usalduse tänu oma suveräänsusele, süvenemisele ja tõsidusele. Tema tööde jõud seisneb teose ja füüsilise objekti lahutamatuses, iga nüanss maali pinnal sünnib kuju võtnud materjalist enesest. Tema maalid on väga avatud, kohati isegi ohtlikult avatud kõikvõimalikele tõlgendusviisidele, neis on tasakaalustatud segu ilust, täiuselubadusest, hirmutavusest ning kaosest

  2. Kaubanduskeskused pole hindu alla lasknud / Eleri Lopp, Kadrin Karner

    Index Scriptorium Estoniae

    Lopp, Eleri

    2007-01-01

    Statistikaameti andmetel on kaubanduspindade üürihinnad langenud veidi üle 35%, kuid ettevõtjad hinnalangust ei tunneta. Diagramm: Tallinna kesklinnas asuva kaupluse ruutmeetri üürihind kuus. Lisa: Statistikaamet: languse tõi tehingute vähesus

  3. Pits viina hinge alla ja lavale! / Riho Laurisaar

    Index Scriptorium Estoniae

    Laurisaar, Riho

    2005-01-01

    4. juunil Elvas Leopold Hanseni majamuuseumi aias esietendunud Elva Sinilinnu Suveteatri etendusest - J. Kaldmaa "Külalitsemajast", mille lavastas R. Adlas. Ka harrastusteatritest ja harrastusnäitlejatest. Lisatud lühiandmed harrastusteatrite suvelavastustest

  4. Economie in crisi: Eurolandia dalla resistenza alla ricostruzione

    Directory of Open Access Journals (Sweden)

    ALBERTO QUADRIO CURZIO

    2011-01-01

    Full Text Available In this article we underline the effects of the crisis that erupted in the U.S. in 2008, due to financial hazard, and then spread everywhere, to assess how the euro zone (EMU and its countries have acted. We will consider two periods that the EMU has passed through, each characterized by a different attitude towards the crisis: diversified resistance (with more deficits and higher debt, that in many countries was due to bail out banks; unified resistance (intergovernmental coordination, with a common special vehicle (EFSF, ratified by Ecofin and the European Council. We conclude with references to 2011 when the Òregulation with actions for growthÓ might begin.

  5. Sulle sponde del Mediterraneo alla ricerca dell’amore perduto

    DEFF Research Database (Denmark)

    Chemi, Tatiana

    2002-01-01

    Review to the Odin Teatret’s last performance, Sale, from a short story of the Italian novelist Antonio Tabucchi. A melancholic and self-ironic love story.......Review to the Odin Teatret’s last performance, Sale, from a short story of the Italian novelist Antonio Tabucchi. A melancholic and self-ironic love story....

  6. Más alla del concepto: desarrollo sostenible

    OpenAIRE

    Laura Benavides López

    2013-01-01

    El artículo tiene la finalidad de promover la reflexión con respecto al desarrollo sostenible, como un marco de referencia para el educador, que le permita comprender la Década de la Educación para el Desarrollo Sostenible y la Declaratoria Paz con Naturaleza.  La autora describe y reflexiona sobre el concepto, desde una perspectiva basada en la alteridad; por lo tanto, parte de una posición ética donde se potencializa a la persona para que sea constructora del desarrollo sostenible que requi...

  7. Economie in crisi: Eurolandia dalla resistenza alla ricostruzione

    Directory of Open Access Journals (Sweden)

    Alberto Quadrio Curzio

    2011-06-01

    Full Text Available  In this article we underline the effects of the crisis that erupted in the U.S. in 2008, due to financial hazard, and then spread everywhere, to assess how the euro zone (EMU and its countries have acted. We will consider two periods that the EMU has passed through, each characterized by a different attitude towards the crisis: diversified resistance (with more deficits and higher debt, that in many countries was due to bail out banks; unified resistance (intergovernmental coordination, with a common special vehicle (EFSF, ratified by Ecofin and the European Council. We conclude with references to 2011 when the “regulation with actions for growth” might begin.Keywords: Aggregate debt; eurogovernance; intergovernmental coordination.  JEL Codes: E00, E02Keywords: Aggregate debt; eurogovernance; intergovernmental coordination

  8. Más alla del concepto: desarrollo sostenible

    Directory of Open Access Journals (Sweden)

    Laura Benavides López

    2013-05-01

    Full Text Available El artículo tiene la finalidad de promover la reflexión con respecto al desarrollo sostenible, como un marco de referencia para el educador, que le permita comprender la Década de la Educación para el Desarrollo Sostenible y la Declaratoria Paz con Naturaleza.  La autora describe y reflexiona sobre el concepto, desde una perspectiva basada en la alteridad; por lo tanto, parte de una posición ética donde se potencializa a la persona para que sea constructora del desarrollo sostenible que requiere el país, donde la educación, la justicia social y la democracia conforman la plataforma para el logro de este. Se señalan aspectos fundamentales, como cuál fue el origen de desarrollo sostenible y como está idea se fue encuadrando dentro de una nueva ética centrada en la gente y para la gente. Se parte de que el desarrollo sostenible es un proceso de cambio y de transición hacia nuevas formas de producir, de consumir, pero también hacia nuevas formas de ser.  Es un proceso multidimensional y complejo, que debe caracterizarse por su innovación, creatividad y apertura. Sin embargo, la dependencia de la política nacional e internacional de la economía micro y macro, de la cultura regional y global, hacen que el concepto se torne difícil de visualizar como un proceso autóctono y que obedezca a las necesidades reales de las personas y comunidades de un país.

  9. Due recenti contribute statinitensi alla linguistica romanza e latina

    Directory of Open Access Journals (Sweden)

    Pavao Tekavčić

    1978-12-01

    Full Text Available Negli ultimi anni la linguisti.ca romanza si è arricchita di un notevole numero di opere di importanza fondamentale e di indirizzo più o meno moderno: oltre aile edizioni nuove e aggiornate di manuali ormai classici come Le Origini delle lingue neolatine di C. Tagliavini (VI edizione, Bologna, 1972 e The Romance Languages di W. D. Elcock (II edizione, Londra, 1975, hanna vista la luce il compendia di P. Bec, Manuel pratigue de philologie romane (Parigi, I volume 1970, II volume 1971, la traduzione Spagnola dell' opera di I. Iordan e M. Manoliu (Manual de lingüística románica, I-II, Madrid 1972; trad. di M. Alvar e, recentissimamente, le due opere che sono l'argomento del presente contributo: R. A. Hall jr. ci ha dato i due primi volumi della sua Comparative Romance Grammar (I External History of the Romance Languages 7 Nuova York, Elsevier, 1974; II Proto-Romance Phonology, ibid. , Elsevier, 1976 e Mario Pei ha pubblicato il suo volume The Story of Latin and the Romance Languages (Nuova York, Harper and Row, 1976.

  10. Saddam läheb Iraagi kohtu alla / Heiki Suurkask

    Index Scriptorium Estoniae

    Suurkask, Heiki, 1972-

    2003-01-01

    Saddam Husseini vahistamisest, tema käitumisest ülekuulamisel. USA president George W. Bush kohtumõistmisest Husseini üle. Peidikust, kus Hussein vahistamise hetkel viibis. Kaart, skeem: Operatsioon "Punane Koit". Lisa: Saddam Hussein. Vt. samas: Rumsfeld: Saddamil on sõjavangi õigused

  11. "Graafika IN" kui klots ANG piltmõistatuses / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2005-01-01

    9. IN Graafika festivalist "Man-Machine" Pärnus Muuseumiaidas 8.-16. I, Pärnu kontserdimajas 8. I-12. II TÜ kolledzhis ja Endla teatri Küüni koridorigaleriis 8. I kuni veebruari lõpuni ning Academia Non Gratast (J. Köleri nim. Positivistlikust Kunsttööstuskoolist)

  12. L’educazione alla differenza oggi. Formare l’altro

    Directory of Open Access Journals (Sweden)

    Renzo Dameri

    2014-04-01

    Full Text Available Nowadays human relationships are dominated by a virtual interactivity based on nicknames or fakes which brings into question real trustworthiness and the ethical nature of sharing. Friendship, feelings and love are less intense, thoughts become fragmented like text messages and can be controlled by a simple “click”. As Levinas pointed out, relationships cannot be considered as a group of artificial or technological certainties anymore; they become open and real and they are based on the understanding of the Other. This Other, who pre-exists us, should be reconsidered in an appropriate way: we should start by considering his story, environment and habits, in order to truly understand him. Tolerance towards other people is not enough anymore; a tolerant person always tends to feel superior to those who are tolerated. Living together is possible only if we share with reciprocity.

  13. Voyeuristi alla finestra: Peeping Tom, dalla leggenda al cinema

    Directory of Open Access Journals (Sweden)

    Laura Staiano

    2015-01-01

    Full Text Available This essay deals with voyeuristic attitudes and ʹscopic powerʹ, i.e. the power to gaze at forbidden things and people without being seen. Indeed, its object par excellence coincides with female nakedness, while its subject is an invisible masculinity, which takes delight in looking.The paper is based on a study of the Anglo-Saxon legend of Lady Godiva and it is strictly connected with the subject of my dissertation in progress – metaphorical and physical blindness in 18th century French literature (since several voyeurs got blind because of their instincts and desires. Lady Godiva’s voyeur, called Peeping Tom, is struck blind for having looked out of his window and seen the noblewoman riding naked. This legend has inspired many artists in different fields, and nowadays its heroine is very famous and venerated. In particular, this essay focuses on the relation between this legend and compulsive looking (or scopophilia in two renowned films, Rear Window by Alfred Hitchcock, and Peeping Tom by Michael Powell.

  14. L'Universo alla ricerca delle sue origini

    CERN Document Server

    Picasso, Emilio

    2000-01-01

    Sommario : La Cosmologia è una disciplina storica e come avviene per la storia più si allontana dalla nostra epoca il periodo che vogliamo studiare più rari si fanno i documenti e più difficile è l'interpretazione. Il grande anello di collisione elettrone-positrone, il LEP, permette ai fisici di risalire indietro nel tempo e di studiare i fenomeni che sono avvenuti circa un decimo di miliardesimo dopo il Big Bang. In questo senso limitato il LEP è una finestra sul tempo. In questa conferenza sono brevemente presentati gli argomenti di cosmologia e le costruzione del LEP è descritta in dettaglio.

  15. Duši alla sauna / Margit Aedla

    Index Scriptorium Estoniae

    Aedla, Margit, 1970-

    2007-01-01

    Duraviti multifunktsionaalne värviline duširuum. Electroluxi Design Lab'07 konkursi finalisti Joao Diego Schimansky Fog Shower (ududuš). Väiksematesse kodudesse sobiv Muoto mobiilne aurusaunatool Muoto-Steam Deluxe

  16. USA dollar langes eile alla 12 krooni / Andris Feldmanis

    Index Scriptorium Estoniae

    Feldmanis, Andris, 1982-

    2004-01-01

    Odavast dollarist kaotavad Eesti ettevõtjatest dollaritsooni eksportijad, võidavad importijad. Skeem: Dollari kurss tagasi 90ndate aastate keskpaiga tasemel. Vt. samas: Tõnis Oja. Ameerikale nõrk dollar meeldib

  17. Laimuintriig viis Prantsuse ekspeaministri kohtu alla / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2009-01-01

    Prantsusmaal algas kohtuprotsess, mille käigus püütakse välja selgitada, kas kunagine peaminister Dominique de Villepin üritas diskrediteerida endist siseministrit, praegust presidenti Nicolas Sarkozy'd

  18. Blog.tr.ee ei anna alla / Raigo Neudorf

    Index Scriptorium Estoniae

    Neudorf, Raigo

    2007-01-01

    Veebikeskkonna blog.tr.ee arengust ja majandamisest räägivad keskkonna looja Andris Reinmann ja firma OÜ Tr.ee osaniku Mobi Solutions'i esindaja Rain Rannu. Vt. samas: Mis on blog.tr.ee; Kaljundi: blog.tr.ee on hobiprojekt. Kommenteerib nagi.ee juhataja Jüri Kaljundi. Lisatud joonis: Blog.tr.ee unikaalsete külastajate arv nädalas

  19. Pakistan andis Osama bin Ladeni jahtimisel alla / Heiki Suurkask

    Index Scriptorium Estoniae

    Suurkask, Heiki, 1972-

    2004-01-01

    Pakistani president Pervez Musharrafi sõnul on Osama bin Ladeni otsingud Lõuna-Waziristanis tulemusteta. Edaspidi keskendutakse otsingutel Põhja-Waziristani, oletatakse, et bin Laden võib olla ka Tora Bora koobastikus. Lisa: USA hambutu luureteenistus

  20. Kohaliku omaalgatuse programm paneb maaelule õla alla / Taavi Tuur

    Index Scriptorium Estoniae

    Tuur, Taavi

    2005-01-01

    Kohaliku omaalgatuse programm on riigieelarvest rahastatav regionaalse arengu programm, mille eesmärk on kohalik areng ja piirkondade konkurentsivõime suurenemine kogukonna kaasamise ja tugevdamise kaudu

  1. Avatud ja suletud Ida-Euroopa / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2009-01-01

    Näitus "Me näeme teid. Foksali galerii tegevus 1966-1989" Kumu Kunstimuuseumis 20. septembrini. Kuraator Karolina Łabowicz-Dymanus. Kujundaja Jaanus Samma. Lääne ja endise Ida-bloki riikide kunst on eksponeeritud kõrvuti

  2. Savisaar jäi alla Savisaarele / Andres Ammas

    Index Scriptorium Estoniae

    Ammas, Andres, 1962-

    2001-01-01

    Välissuhtlus on olnud Savisaare ja Keskerakonna Achilleuse kand algusest peale. Savisaar pidurdab Keskerakonna arengut. Autor: Isamaaliit. Ilmunud ka: Lääne Elu, 15. veebr. 2001, lk. 4; Hiiu Leht, 16. veebr. 2001, lk. 2; Vooremaa, 17. veebr. 2001, lk. 4; Nädaline, 17. veebr. 2001, lk. 2; Koit, 17. veebr. 2001, lk. 6; Võrumaa Teataja, 17. veebr. 2001, lk. 2; Järva Teataja, 20. veebr. 2001, lk. 2

  3. Gilbert ja George lasevad oma kunstiteose alla laadida

    Index Scriptorium Estoniae

    2007-01-01

    9.05.2007 öösel on kõigil soovijail võimalik tasuta interneti vahendusel omandada Londonis tegutseva kunstnikepaari Gilbert & George (Gilbert Proesch ja George Passmore) teos "Planed". Aadressid: www.bbc.co.uk/imagine ja www.guardian.co.uk/art

  4. Nõukogude absurd : 1960. aastate eesti kunst eksistentsialismi taustal / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2010-01-01

    Vaadeldakse eksistentsialismi kui üht võimalikku tausta 1960-ndate eesti kunstis, eksistentsialismi ja absurdi suhet ning esilekerkimiste rütmi läbi tolle aja noorte kunstnike korraldatud happening'ide, ka arutelusid kunsti filosoofilisuse, kunstilise kujundi ja inimese kujutamise ning kunstniku rolli üle

  5. "Graafika IN" kui klots ANG piltmõistatuses / Anu Allas

    Index Scriptorium Estoniae

    Allas, Anu, 1977-

    2005-01-01

    9. IN Graafika festivalist "Man-Machine" Pärnus Muuseumiaidas 8.-16. I, Pärnu kontserdimajas 8. I-12. II TÜ kolledzhis ja Endla teatri Küüni koridorigaleriis 8. I kuni veebruari lõpuni ning Academia Non Gratast (J. Köleri nim. Positivistlikust Kunsttööstuskoolist)

  6. Blog.tr.ee ei anna alla / Raigo Neudorf

    Index Scriptorium Estoniae

    Neudorf, Raigo

    2007-01-01

    Veebikeskkonna blog.tr.ee arengust ja majandamisest räägivad keskkonna looja Andris Reinmann ja firma OÜ Tr.ee osaniku Mobi Solutions'i esindaja Rain Rannu. Vt. samas: Mis on blog.tr.ee; Kaljundi: blog.tr.ee on hobiprojekt. Kommenteerib nagi.ee juhataja Jüri Kaljundi. Lisatud joonis: Blog.tr.ee unikaalsete külastajate arv nädalas

  7. Alla ricerca dell’immagine video nel ciberspazio

    Directory of Open Access Journals (Sweden)

    Amal Bou Hachem

    2008-07-01

    Full Text Available L’immagine conosce ai nostri giorni una proliferazione mai eguagliata. Con Internet, e la digitalizzazione in particolare, le possibilità tecniche di creazione e di diffusione si sono largamente massificate e diffuse in questi ultimi anni. A questo riguardo, possiamo vedere il successo formidabile e folgorante di siti condivisi e di diffusione d’immagini video. Si assiste ad un fenomeno «fatto tutto d’immagini», «condividetele gli uni con gli altri». Le questioni di ciò è che è un’immagine, ciò che è una pellicola, ciò che è l’arte, sono sempre più di aureolate ondulazioni, di porosità, d’interazione tra esse? Il villaggio globale favorisce la distinzione nell’indistinzione. Tutti singolari, tutti simili? Tutto entra e sorge ormai dall’elaboratore e dalla rete. Quest’articolo propone una lettura di questo fenomeno di proliferazione d’immagini mobili attraverso due esempi di siti di condivisione d’immagine video: Youtube e Dailymotion.

  8. Alla scoperta di TV-Glad prima emittente per disabili

    DEFF Research Database (Denmark)

    Chemi, Tatiana

    2006-01-01

    the moving story of the first tv-channel for and made by collaborators with handicaps. The Danish broadcast, which is quickly expanding globally, exporting its unique example of tolerance, fantasy and hard work....

  9. Osaline ajateenistus kisub Eesti meestel moraali alla / Vahur Koorits

    Index Scriptorium Estoniae

    Koorits, Vahur, 1981-

    2008-01-01

    Ekspertide arvates ei näita ajateenistusest vabastatud noormeeste suur protsent Eestis mitte kutsealuste kehva tervist, vaid pigem neile esitatavaid kõrgeid norme. Tabel: Ajateenistus Eestis ja Soomes; Vt. samas: Ajateenistuse edasilükkamine Eestis; Ajateenistuse lõpetamine Lätis; Ajateenistus Iisraelis; Ajateenistus Saksamaal; Ajateenistus Soomes; Lühiintervjuu Jaak Aaviksooga

  10. Aqui y Alla en California. (Here and There in California).

    Science.gov (United States)

    Galarza, Ernesto

    One in the series "Coleccion Mini-Libros" (Mini-Book Collection) written in Spanish as an enrichment tool for the Spanish speaker, the booklet is a compilation of photographs accompanied by brief descriptions of various points of beauty and interest throughout the State of California. Among the points of interest described are La Sierra Nevada,…

  11. Ali A-F. A. Gab-Alla

    African Journals Online (AJOL)

    These coral patches do not exceed 10 % cover of the rocky ..... (1989) confirmed that localized loss of seagrass at Cockburn Sound Bay in Australia detected ... Loya Y & Rinkevich В (1980) Effects of oil pollution on coral reef communities. Mar.

  12. Uus tulumaksuseadus teel kohtuhaamri alla / Sten-Aleks Pihlak

    Index Scriptorium Estoniae

    Pihlak, Sten-Aleks

    2007-01-01

    Uuest tulumaksuseaduse eelnõust. Lisatud: Rahandusminister Ivari Padar: eesmärk pole komisjoni "ära petta" ; KPMG Baltics ASi maksu- ja juriidilise osakonna juhataja Joel Zernaski ja peaminister Andrsu Ansipi kommentaarid ; Euroopa Komisjon oma nõudmistest ei tagane

  13. Meccanica quantistica relativistica introduzione alla teoria quantistica dei campi

    CERN Document Server

    Maiani, Luciano

    2012-01-01

    Tra gli argomenti trattati: le simmetrie dello spazio-tempo; la particella libera classica; teoria lagrangiana dei campi; quantizzazione dell' equazione di Klein Gordon; quantizzazione del campo elettromagnetico; l'equazione di Dirac; i propagatori dei campi liberi; interazioni; evoluzione nel tempo dei sistemi quantistici; teoria relativistica delle perturbazioni...

  14. Hiinlased peidavad oma inimõigusrikkumisi kalevi alla / Karin Volmer

    Index Scriptorium Estoniae

    Volmer, Karin

    2008-01-01

    Amnesty Internationali raporti järgi on Hiinas inimõiguste rikkumised suurenenud enne Pekingi olümpiamänge, kuid Hiina võimud pole nõus aruande tulemustega. Lisa: Amnesty aruande peamised etteheited

  15. Savisaar jäi alla Savisaarele / Andres Ammas

    Index Scriptorium Estoniae

    Ammas, Andres, 1962-

    2001-01-01

    Välissuhtlus on olnud Savisaare ja Keskerakonna Achilleuse kand algusest peale. Savisaar pidurdab Keskerakonna arengut. Autor: Isamaaliit. Ilmunud ka: Lääne Elu, 15. veebr. 2001, lk. 4; Hiiu Leht, 16. veebr. 2001, lk. 2; Vooremaa, 17. veebr. 2001, lk. 4; Nädaline, 17. veebr. 2001, lk. 2; Koit, 17. veebr. 2001, lk. 6; Võrumaa Teataja, 17. veebr. 2001, lk. 2; Järva Teataja, 20. veebr. 2001, lk. 2

  16. Roheline logistika seisab mõtteviisi taga / Roger Allas

    Index Scriptorium Estoniae

    Allas, Roger

    2008-01-01

    Ülevaade Tallinna Tehnikakõrgkooli 3. kursuse logistikaüliõpilaste poolt korraldatud 9. logistikaseminarist "Go Green", kus toodi välja kitsaskohad, mis takistavad Eesti ettevõtteid keskkonnasõbralikuks muutumast. Lisa: Taust; Tasub teada; Number

  17. Pakistan andis Osama bin Ladeni jahtimisel alla / Heiki Suurkask

    Index Scriptorium Estoniae

    Suurkask, Heiki, 1972-

    2004-01-01

    Pakistani president Pervez Musharrafi sõnul on Osama bin Ladeni otsingud Lõuna-Waziristanis tulemusteta. Edaspidi keskendutakse otsingutel Põhja-Waziristani, oletatakse, et bin Laden võib olla ka Tora Bora koobastikus. Lisa: USA hambutu luureteenistus

  18. Dal calore all'entropia una introduzione alla termodinamica

    CERN Document Server

    Vicentini Missoni, Matilde

    1992-01-01

    Panta rei : processi ed equilibrio ; l'universo termodinamico : l'aspetto processuale ; il punto di vista dei processi come bilancio tra proprietà dell'equilibrio ; il fluire dell'energia ; automobili, frigoriferi e pompe di calore : informazioni tecnologiche ; e allora ? l'entropia ; la termostatica come teoria assiomatica ; la termodinamica dei processi.

  19. Kõik failid on juba alla laetud! / Eve Arpo

    Index Scriptorium Estoniae

    Arpo, Eve

    2008-01-01

    Berliini iga-aastasest kunsti- ja digitaalkultuuri festivalist "Transmediale" alapealkirjaga "Conspire...", kus käsitleti privaatsuse kadumist, info vaba levikut, hirmu, kopeeritavust, unikaalsust. Võitis ameeriklaste Julia Meltzeri ja David Thorne video "Not a Matter of If but When". Raivo Kelomehe kommentaarid

  20. Anche una nave alla fonda viaggia... - Anchored ships also travel...

    Directory of Open Access Journals (Sweden)

    Antonio Luigi Palmisano

    2011-09-01

    Full Text Available When travelling, reflections and considerations – more or less structured – are about being “elsewhere”. The subject finds himself physically, socially and politically in this “elsewhere” as an Ego and finds or maybe finds again another Ego, other Ego each of them being still the subject’s own but different from the previous. The structure of travelling is transition and the transitive structure of the Ego also comes to the fore. It is anyway a transition which stimulates reflections, a transition which complicates the Ego. Travelling is therefore the art of complicating the everyday life in order to reach the unexpected. Just as philosophy. But the relation between travelling and philosophy is still deeper: travelling is the praxis of philosophy. The encounter with the “Other” becomes an opportunity to communicate between Seienden which constitute themselves as such actually through the encounter. It is an encounter between men which does not exclude the encounter with Divinity.

  1. Gilbert ja George lasevad oma kunstiteose alla laadida

    Index Scriptorium Estoniae

    2007-01-01

    9.05.2007 öösel on kõigil soovijail võimalik tasuta interneti vahendusel omandada Londonis tegutseva kunstnikepaari Gilbert & George (Gilbert Proesch ja George Passmore) teos "Planed". Aadressid: www.bbc.co.uk/imagine ja www.guardian.co.uk/art

  2. ALLA SCOPERTA DEL PACKAGING DESIGN CON IL WEBQUEST

    Directory of Open Access Journals (Sweden)

    Antonietta Gobbis

    2013-01-01

    Full Text Available Il seguente saggio tratta le possibilità di presentazione in Università straniere, dove si insegna l’ItalianoL2, di un aspetto culturale italiano di forte impatto all’estero come il design, attraverso l’innovativa metodologia del webquest. L’iniziale parte teorica descrive il webquest come metodo didattico costruttivista, con particolare riferimento alle sue caratteristiche, parti costituenti e tipologie. Nella seconda parte vengono dati esempi concreti di webquest di breve e lunga durata su due prodotti italiani molto famosi di packaging design, che hanno festeggiato il loro anniversario nel 2012: il Bacio Perugina e il Campari Soda. I risultati positivi di entrambi i progetti intendono mostrare i vantaggi di una didattica centrata sull’alunno basata su attività di problem-solving e strategie di cooperative learning.  Discovering packaging design through webquest The following essay deals about the possibilities to introduce a very successful cultural topic like Italian Design in Universities abroad, where Italian is taught as second foreign language, through the innovative methodology of WebQuests. The theoretical part describes WebQuests as constructivist didactic method with reference to its characteristics, main constituent parts  and typologies. In the second part we give concrete examples of short and long term WebQuests about two very famous packaging design Italian products which celebrated in 2012 their anniversary: BacioPerugina and Campari Soda. The positive results of both projects aim to show the advantages of learner-centered teaching methods based on problem-solving activities and cooperative learning strategies.

  3. Kodune energiakulu kontrolli alla / Leo Backman, Heigo Ensling

    Index Scriptorium Estoniae

    Backman, Leo

    2012-01-01

    Energiakulumõõturite test: Axxel HH-549, Efergy e2 (juhtmevaba mõõtur), Electric EMT707CTL, Electronic PM 498, Electronic UPM DEM1379, Energy Meter LX-0805, Eco Line EM235, Energy Saving Meter HH-549, Art.35-617 (multifunktsionaalne mõõtur), EMT7110/EMR7370 (juhtmevaba mõõtur)

  4. Moodne aeg käib alla / Valner Valme

    Index Scriptorium Estoniae

    Valme, Valner, 1970-

    2008-01-01

    Arvustus: Beigbeder, Frédéric. Armastus kestab kolm aastat : romaan / prantsuse keelest tõlkinud Anti Saar. Tallinn : Varrak, 2008 ; Cusk, Rachel. Arlington Park / tõlkinud Kersti Unt. Tallinn : Varrak, 2007

  5. Il danno alla persona del lavoratore: il mobbing orizzontale

    Directory of Open Access Journals (Sweden)

    Riccardo Gentile

    2011-12-01

    Full Text Available Sommario:1. Il mobbing tra diritto civile e diritto del lavoro – 2. Il fenomeno mobbing: gli studi iniziali e la definizione – 3. Le concrete condotte integranti fattispecie di mobbing – 4. Onere della prova – 5. Il mobbing orizzontale – 6. L’elemento soggettivo di colpevolezza del da­tore di lavoro nella responsabilità ex art. 2087 c.c. per mobbing orizzontale

  6. Nel tunnel alla ricerca di una nuova fisica

    CERN Multimedia

    Durante, Elisabetta

    2003-01-01

    The Large Hadron Collider is at the top of world-wide science for particle physics. It promises to open the road to a new knowledge of the universe and its nature. Luciano Maiani and Robert Aymar, actual and future Director Generals of CERN, explain the aims of this most powerful instrument, the difficulties and the industrial repercussions, among which will be the "Grid", that will change the telecommunications (4 pages)

  7. Meccanica è vita. Da Calvino alla robotica evolutiva

    Directory of Open Access Journals (Sweden)

    Cristian Fuschetto

    2014-06-01

    Full Text Available Often the scientific innovations are better explained by literature than scientific essay. In the stories of writers they acquire an identity otherwise so forced to remain contradictory. This was the case of Italo Calvino and Primo Levi about “thinking machines” arrived on stage of the History of the late 20th century. In another perspective, this was also the case of another unusual observer of Cybernetics: Charles Darwin.

  8. Tallinlaste arv kukkus alla 400 000 / Dagne Hanschmidt

    Index Scriptorium Estoniae

    Hanschmidt, Dagne

    2006-01-01

    Ilmunud ka: Postimees : na russkom jazõke 6. märts lk. 8. Rahvastikuregister kõrvaldas elanike nimekirjast kehtiva elamisloata isikud, mille tõttu kahanes Tallinna elanike arv 4766 inimese võrra. 1. märtsi seisuga on pealinlasi kokku 398 753 inimest

  9. Luige firmadega seotud pettused uurimise alla / Silva Männik

    Index Scriptorium Estoniae

    Männik, Silva, 1974-

    2000-01-01

    Maksuamet esitab politseile riiulifirmasid müünud ASist Divec ära võetud dokumentide alusel Novecento OÜs tehtud revideerimise materjalid. Novecento OÜ kaudu toimunud maksupettustes olid sagedasemad osalejad Hans H. Luigega seotud ettevõtted. Ilmunud ka: Estonija 14. aug. lk. 5; Delovõje Vedomosti 16. aug. lk. 9

  10. UNIVERSIDAD, CIENCIA Y DESARROLLO: MAS ALLA DE LA LINEA BASE

    Directory of Open Access Journals (Sweden)

    Orlando Pulido Chaves

    1996-01-01

    Full Text Available Este artículo plantea la hipótesis de que la actual crisis a escala global es producto de un cambio en el modelo de desarrollo del capitalismo, consistente en una transformación sustancial de los procesos productivos, y de la transición hacia una nueva fase del capitalismo, caracterizada por el hecho de que las hegemonías y las supremacías se empiezan a construir con base en el predominio del desarrollo científico y tecnológico. Esta crisis expresa el agotamiento del modelo fordista-taylorista, sustentado en la gran industria y en el control del mercado mundial de bienes manufacturados y de capital, y la aparición de tendencias postfordistas, caracterizadas por la lucha por el control del mercado de servicios y de bienes de alta densidad tecnológica, en el que la producción de conocimiento domina las relaciones comerciales.. En este contexto, la universidad, la educación y la investigación cobran importancia estratégica, y plantean retos decisivos para el futuro de los países subdesarrollados.

  11. Fondijuhid jäid Heleniuse isule alla / Martin Hanson

    Index Scriptorium Estoniae

    Hanson, Martin, 1984-

    2007-01-01

    Varahaldusosakonna viis võtmetöötajat - juht Kristel Kivinurm-Priisalm, investeeringute juhid Toomas Reisenbuk ja Aadu Oja, fondijuht Valdur Jaht ja finantsjuht Kadri Haldre lahkusid Trigon Capitalist kuna nende tulevikunägemus erines omaniku Joakim Heleniuse omast. Diagrammid: Trigoni fondide näitajad. Vt. samas: Trigoni uus meeskond juba määratud

  12. Approccio dal basso, servizi alla persona e memorie interculturali

    Directory of Open Access Journals (Sweden)

    Orazio Maria Valastro

    2003-06-01

    Full Text Available Valorizzare le memorie dei migranti risponde ad una precisa esigenza di riconoscimento, nella storia collettiva e nello spazio politico nazionale, della memoria interculturale di intere collettività ... Queste condizioni implicano l'esigenza del riconoscimento della memoria dei migranti traducendosi in uno stimolo per lo sviluppo di nuove politiche sociali e culturali e di nuovi interventi focalizzati su questo stesso riconoscimento che interessa direttamente anche gli operatori sociali e culturali delle amministrazioni pubbliche e del terzo settore.

  13. Kinnisvara pakkumishinda saab oluliselt alla kaubelda / Andres Hall

    Index Scriptorium Estoniae

    Hall, Andres

    2005-01-01

    Ilmunud ka: Molodjozh Estonii : Nedvizhimost 26. jaan. lk. 1, Delovõje Vedomosti 16. märts lk. 16. . Kinnisvara pakkumishinnad sisaldavad olulisel määral "õhku", mida ostjal on võimalik hinnast maha kaubelda

  14. Moodne aeg käib alla / Valner Valme

    Index Scriptorium Estoniae

    Valme, Valner, 1970-

    2008-01-01

    Arvustus: Beigbeder, Frédéric. Armastus kestab kolm aastat : romaan / prantsuse keelest tõlkinud Anti Saar. Tallinn : Varrak, 2008 ; Cusk, Rachel. Arlington Park / tõlkinud Kersti Unt. Tallinn : Varrak, 2007

  15. Dal divario Nord-Sud alla convergenza: il modelo dell'intervento straordinario a l'azione della Cassa per in Mezzogiorno, durante e oltre la golden age = From the North-South gap to the convergence: The model of the extraordinary intervention and the...

    Directory of Open Access Journals (Sweden)

    Amedeo Lepore

    2012-07-01

    delle aree del Paese che già possedevano un’armatura industriale, ma si ottenne, contemporaneamente, il risultato, per nulla scontato, di una modernizzazione della struttura economica del Mezzogiorno –attraverso la politica delle opere pubbliche, prima, e dell’industrializzazione vera e propria, poi– nonché, di un recupero del divario accumulato con le regioni settentrionali. In questo modo, l’intervento straordinario, indirizzato verso obiettivi macroeconomici e guidato da una tecnostruttura come quella della Cassa, al tempo stesso autonoma e reattiva alle scelte strategiche del governo, si dimostrò lo strumento più efficace e innovativo per fare dell’Italia intera una potenza industriale. L’allontanamento da questi esiti, nella fase successiva dominata dalla crisi petrolifera e dalle politiche di ristrutturazione industriale, pur determinando una netta inversione di tendenza, non ha messo in discussione il valore dell’esperienza iniziale della Cassa per il Mezzogiorno, capace di aprire la strada alla crescita economica italiana negli anni del boom.Historiography focusing on the Cassa per il Mezzogiorno is indeed vast and developed not only in regard to the main issues concerning the extraordinary intervention, but also to the various sectorial and territorial articulations public interventions for the recovery of Southern Italy undertook. Achieving a punctual reconstruction of the goings-on of the Cassa, an istitution that, for more than forty years –despite some differences in planning during its various phases– operated as an instrument to implement the strategies focusing on developing Southern Italy, requires a very deep commitment. However, an effective overall view can be reconstructed by interpreting a public intervention model strictly linked to the concrete economic events and to the trends of those industrial processes implemented in Southern Italy, even without going through a detailed chronicle of this entity.The choice of a long

  16. Microstructure and Properties of Ti6Al4V-T2 Lap Welded Joints by Cold Metal Transfer Technology%钛合金Ti6Al4V/纯铜T2冷金属过渡搭接焊焊接接头组织与性能

    Institute of Scientific and Technical Information of China (English)

    冯振; 曹睿; 陈剑虹

    2014-01-01

    采用冷金属过渡(Cold metal transfer, CMT)技术,以镍铝青铜ERCuNiAl焊丝作为填充材料,对钛合金Ti6Al4V和纯铜T2异种金属薄板进行钛板在上铜板在下的搭接连接。使用扫描电镜和能谱分析研究焊接接头的显微组织和反应界面金属间化合物的组成,并通过横向拉伸试验对接头的力学性能进行评定。研究结果表明,冷金属过渡技术可以实现于钛/铜异种金属的有效连接。焊接过程中电弧比较稳定,焊缝成形良好。在电弧热的作用下,铜板完全熔透,与焊缝金属形成铜-焊缝界面,钛板部分熔化,铜板和焊丝熔化包围在钛板的周围,形成了钛和焊缝的三个界面,提高了接头的力学性能。钛侧金属间化合物层包含TiCu、TiAl、Ti2Cu、AlCu2Ti和铜基固溶体等多种金属间化合物。拉伸试验时,断裂发生在铜母材的热影响区,拉剪强度可达200 MPa。%The lap-shear joint configuration that the titanium alloy Ti6Al4V sheet is placed on the top of the pure copper T2 sheet is carried out. 1 mm thick titanium alloy Ti6Al4V is joined to 1 mm thick pure copper T2 using ERCuNiAl filler wire by cold metal transfer(CMT) welding technology. Microstructure and intermetallic compounds of the welded joints are examined by scanning electron microscopy (SEM) with energy dispersive spectrometer (EDS). The mechanical properties are characterized by tensile-shear tests. Results indicate that the welding process is stable and the continuous and uniform welded joint is formed. Satisfied lapped joint between titanium alloy Ti6Al4V and pure copper T2 can be achieved by CMT welding method. Copper sheet and welding wire are melted, and then copper-weld interface is formed. Titanium sheet is partially melted, copper sheet and welding wire melting is surrounded around titanium sheet, so three titanium-weld interfaces are formed. Ti-Cu welded interface is composed of an intermetallic compounds layer

  17. Nimesulide Lap (Salmeterol Assigned Powder Inhaler) Clinical Analysis for the Treatment of Cough Variant Asthma%舒利迭(沙美特罗替卡松粉吸入剂)治疗咳嗽变异性哮喘的临床分析

    Institute of Scientific and Technical Information of China (English)

    张立敏; 刘静; 任丽华

    2015-01-01

    ObjectiveTo study the analysis of nimesulide lap (salmeterol assigned powder inhaler) clinical curative effect for the treatment of cough variant asthma.Methods Retrospective analysis of our hospital between January 2011 and December 2011, admitted during the period of clinical data of 46 patients with cough variant asthma, antibiotics should be used in all patients and phlegm, cough medicines to be null and void, the given nimesulide overlapping inhaled treatment, analysis the effect of drug treatment.Results After treatment for 40 cases were cured without cough; Improved in 3 cases of cough significantly reduce; 3 cases ineffective, and breathing. Treatment effective rate was 93.48%.Conclusion Nimesulide overlapping inhalation treatment of cough variant asthma has good curative effect, especially for the use of antibiotics and expectorant, cough syrups invalid the patient's clinical curative effect is distinct, worthy of clinical application.%目的:研究分析舒利迭(沙美特罗替卡松粉吸入剂)治疗咳嗽变异性哮喘的临床疗效。方法回顾分析本院2011年1月至2013年12月期间收治的咳嗽变异性哮喘患者46例临床资料,全部患者均使用抗生素及化痰、止咳药无效后,给予舒利迭吸入治疗,分析该药物治疗效果。结果经治疗40例治愈无咳嗽;3例好转咳嗽明显减轻;3例无效,且出现喘息。治疗有效率93.48%。结论应用舒利迭吸入治疗咳嗽变异性哮喘具有良好的疗效,尤其针对使用抗生素及化痰、止咳药无效患者的临床疗效显著,值得临床应用。

  18. Keystone ø-lap til rekonstruktion af huddefekter

    DEFF Research Database (Denmark)

    Breiting, Line Bro; Venzo, Alessandro; Dahlstrøm, Karin

    2009-01-01

    INTRODUCTION: The keystone design perforator island flap was first described in 2003. It is a local flap based on axial perforators from the underlying structures. It is designed as a curvilinear shaped trapezoidal design flap which is essentially two V-Y flaps end to end. Most reports...

  19. Stress Analysis of Lap Joints With Embedded Cover Plate

    Directory of Open Access Journals (Sweden)

    İşcan Bahattin

    2015-06-01

    Full Text Available In this study, the effects of the bonding joints that are partly embedded in the adherent on the tensile behaviour of reinforcing plate adhesive joint have been investigated by 2D finite element method. In the study, the SBT 9244 material was used as the adhesive, and the adherent was the AA2024-T3 material. Three different models were built for the height of the embedded part in the adherent (a and five models for the length of the embedded part (b, while three models were built for the total overlap length (c. Results showed that with the increase of the height of the embedded part and total overlap length, the strength of the joint was considerably increased. The increase of the length of the embedded part was initially led to an increase in the strength of the joints but after 0.25 value of the b/c the strength was reduced.

  20. Laser Beam Oscillation Strategies for Fillet Welds in Lap Joints

    Science.gov (United States)

    Müller, Alexander; Goecke, Sven-F.; Sievi, Pravin; Albert, Florian; Rethmeier, Michael

    Laser beam oscillation opens up new possibilities of influencing the welding process in terms of compensation of tolerances and reduction of process emissions that occur in industrial applications, such as in body-in-white manufacturing. The approaches are to adapt the melt pool width in order to generate sufficient melt volume or to influence melt pool dynamics, e.g. for a better degassing. Welding results are highly dependent on the natural frequency of the melt pool, the used spot diameter and the oscillation speed of the laser beam. The conducted investigations with an oscillated 300 μm laser spot show that oscillation strategies, which are adjusted to the joining situation improve welding result for zero-gap welding as well as for bridging gaps to approximately 0.8 mm. However, a complex set of parameters has to be considered in order to generate proper welding results. This work puts emphasize on introducing them.