cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1285/i9788883051029p34
title: Project and realization of a microbeam at 2.48 nm

description: In this article, the geometry of the optical system, the software/hardware control system and the preliminary measures of the monochromatic beam intensity will be reported. The high X ray conversion efficiency of the Yttrium (Y) used as target in a plasma source, will be important in the realization of an intense monochromatic X-ray beam. In particular, we collect and focus a monochromatic soft X-rays beam at the wavelength of 2.48 nm (500 eV) by multilayer spherical mirror. These mirrors reflect at an angle of incidence close to the normal of the surface. Moreover, the improvements of the optical system are presented: from the currently with a magnification about 2 in the focal spot to have a magnification less than or equal to 1. In this way, we obtain a monochromatic microbeam to be used in radiobiological topics and in transmission X-ray microscopy. A new microbeam system is being implemented at the PLASMA-X laboratory in University of L'Aquila.
DOI: 10.1285/i9788883051029p38
title: A Liquid contact angles on biocompatible surfaces

description: Measurements of liquid contact angles on biocompatible surfaces have been performed at the Physics Department of Messina University. Biological solutions, polymers, ceramics and metals have been studied. Surface treatments by using different laser irradiations, depending on the laser intensity and wavelength, permit to change drastically the wet-ability of many materials and to enhance their biocompatibility and functionality. Results of our investigations put in evidence the best materials to increase or to reduce the wetability of the biological liquids. Results will be presented and discussed in detail with special regard to their applications in biological environment where the materials can be embedded.
DOI: 10.1285/i9788883051029p43
title: Deposition of thick and thin nanocrystalline diamond films by microwave plasma enhanced chemical vapor deposition

description: Thick (around 3 μm) and thin (48-310 nm) nanocrystalline diamond (NCD) films have been produced from Ar-rich CH4/Ar/H2 (1/89/10 %) and H2-rich CH4/H2 (1/99 %) microwave plasmas, respectively. The thick NCD films were obtained with and without an initial buffer layer (BL). The BL is easily obtained under typical microcrystalline diamond growth conditions (CH4/H2 mixtures). The effect of the deposition temperature (TD, 630-900°C) was investigated on the morphology, the surface roughness and the bonding characteristics of the films grown with and without BL. The thin NCD films were grown on Si substrates treated by two different methods, i.e. ultrasonic agitation in a suspension of diamond powders of 40-60 μm or combinatorial approach in a suspension of mixed diamond powders of 250 nm and 40-60 μm. The present experimental results show that the buffer layer procedure allows a good preservation of the surface of treated Si substrate and the combinatorial approach promotes effectively the seeding of the Si surface.
DOI: 10.1285/i9788883051029p49
title: Fourier transform infrared spectroscopy (FTIR) investigation focused on Italian postage stamps in the course of time

description: From the inscription of the General Post Office in Washington DC: “The stamp is the propagator of news, links between distant families, messenger between friends, solace in solitude, a vehicle for commerce and industry, an element of human progress, promoting brotherhood, peace, goodwill among men and nations”. It’s hard to imagine how much history can be held in a small piece of paper and how many purposes this little object was destined to have. This is why postage stamps have reached so much importance and interest, which they began to be considered as work of art actually. In order to see beyond the careful eye of the philatelist, FTIR (Fourier Transform Infrared Spectroscopy) in ATR (Attenuated Total Reflection) mode has been successfully employed in material characterization of many stamps. Samples since 1861, year of the unification of the Kingdom of Italy, until to date, across a vast philatelic collection, has been characterized in this study. The immediate response of this type of spectroscopic technique let to achieve significant data information, which led to design history changes in paper making technologies. The first mail stamps published in Italy portrayed King Vittorio Emanuele II and it showed to be made of sheet of cellulose paper. Going forward in years, many differences were detected in paper composition. The mail stamps were also observed by fluorescence microscopy, in order to determine differences in the application of fluorescence. The analyses were performed without any alteration of the samples and no removal of material was needed, which represents the “conditio sine qua non” for investigations on these kinds of Cultural Heritage.
DOI: 10.1285/i9788883051029p53
title: Sistemi di Computer-Assisted Detection e di Analisi di Dati Bio-medici

description: Le applicazioni della Fisica e dell’Informatica alla Biomedicina includono i sistemi di individuazione di patologie (CAD, Computer-Assisted Detection) basati sul trattamento di dati provenienti da esami diagnostici (in particolare ma non limitandosi alle immagini diagnostiche quali TC, RM, etc.), gli strumenti di ausilio alla chirurgia (realtà virtuale, telechirurgia), l’analisi e l’interpretazione di segnali di interesse biomedicale (per esempio segnali da elettroencefalogramma, EEG, o da elettrocardiogramma, ECG). Questo lavoro presenta una rassegna di applicazioni, in cui gli autori sono impegnati, dandone alcuni dettagli implementativi e discutendone brevemente i risultati. Le applicazioni si differenziano per il tipo di dati analizzati (serie temporali provenienti da misure EEG, oppure dati bi- o tridimensionali contenuti in immagini diagnostiche), per il distretto corporeo di intervento, le finalità, la patologia.
DOI: 10.1285/i9788883051029p60
title: Multi MeV protons, deuterons and carbon ions produced by the PALS laser system

description: Multi MeV ions and fusion neutrons were generated by focused radiation of the 3 TW Prague Asterix Laser System (PALS). The use of 8 μm Al foil as XUV filter positioned in front of an ion collector allowed measuring currents of 4-MeV protons emitted behind a thin target in the forward direction. The proton energy of 4 MeV generated by a PALS laser irradiance Iλ2~5×1016 W cm-2 μm2 on target is nominally reachable for picosecond lasers when they deliver the intensity Iλ2~3×1018 W cm-2 μm2. The enhanced maximum proton energy is favoured by a non-linear interaction of the laser beam with the pre-generated plasma. Nonlinear processes also cause enhancement in the yield of fusion neutrons per focused laser energy from the CD2 plasma. The obtained results show that an equivalent neutron yield was reached by ps- and sub-ps laser beams for Iλ2~1019 W cm-2 μm2. The hampering influence of the electromagnetic pulse generated within the interaction chamber on diagnostics signals was eliminated.
DOI: 10.15468/vnbvrj
title: Flora Costa Rica
DOI: 10.5525/gla.researchdata.173
title: EDIE2 Study.
DOI: 10.5525/gla.researchdata.174
title: EDRF NEXXUS Project Archive
DOI: 10.5525/gla.researchdata.175
title: NEXXUS Project
DOI: 10.6073/pasta/1a46cdac8988a20e6b53077ce40e293d
title: Landsat Enhanced Thematic Mapper image data for California Current Ecosystem LTER collected on 1993-09-04
DOI: 10.6073/pasta/47b36a8d41c50da26a2990638b1b4f76
title: Landsat Enhanced Thematic Mapper image data for California Current Ecosystem LTER collected on 1993-08-19
DOI: 10.6073/pasta/4e6852f17302b454219314985eb4bb3e
title: Regeneration after Hurricane Hugo woody species &gt; 1m tall and below 3m: percent cover (9 ha grid, El Verde)
DOI: 10.6073/pasta/51f3bd375ab898e2330c53cefa80bf53
title: Regeneration after Hurricane Hugo woody species greater than 1cm tall (9ha grid, El Verde)(Wood fall from Hurricane Hugo 9Ha Grid)
DOI: 10.6073/pasta/69c1f37b9c7545c0da0fa20438c19935
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1998-01-09
DOI: 10.6073/pasta/82b20bfb4867a9e2404bf228bba02f0b
title: Landsat Enhanced Thematic Mapper image data for California Current Ecosystem LTER collected on 1993-09-20
DOI: 10.6073/pasta/876bb66d54a04ff054e55c5d8d9e6970
title: Landsat Enhanced Thematic Mapper image data for California Current Ecosystem LTER collected on 2005-06-01
DOI: 10.6073/pasta/8c859575507b996b82b5213e4786bb53
title: Frog abundance in fertilization plots
DOI: 10.6073/pasta/b4f843088931f3656b39f71c7e4737db
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1997-11-22
DOI: 10.6073/pasta/d9e3ea65e594ded20672413459547b5a
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1997-10-05
DOI: 10.6073/pasta/e0097aa951647b763b3ba394e4661c25
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1997-11-06
DOI: 10.6073/pasta/eab577da989ff6518bae3d227b1b8287
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1997-10-21
DOI: 10.6073/pasta/eb0d69c151502581c85e630cc3585f9a
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 2003-03-28
DOI: 10.1285/i9788883051029p101
title: Stress da radiazione RF a 900 MHz ed attivazione di elementi trasponibili in tessuti germinali di Drosophila melanogaster

description: Nel mondo naturale gli individui, le popolazioni e le specie si devono confrontare con variazioni delle condizioni ambientali. Gli organismi e le loro cellule mettono in atto un adattamento fisiologico attraverso risposte che sono immediate e reversibili. Condizioni di stress però, possono causare modificazioni a livello genomico che possono alterare processi biologici fondamentali conducendo a trasformazioni cellulari. È noto da tempo che fattori ambientali provocano condizioni di stress che possono indurre in vari organismi l’attivazione di elementi genetici mobili o elementi trasponibili (TEs) il cui movimento è tra le cause di instabilità genomica. In questo lavoro, individui di Drosophila melanogaster sono stati sottoposti a stress da radiazione RF a 900 MHz ed esaminati per l’attivazione di TEs nei tessuti germinali di entrambi i sessi. Tale stress ha causato un significativo incremento dell’attivazione di tali elementi, confermando che diversi stress ambientali possono avere come conseguenza l’instabilità dei genomi e la comparsa di mutazioni de novo dovute all’inserzione di elementi trasponibili in geni codificanti.
DOI: 10.1285/i9788883051029p106
title: Bactericide effect of powerful Ultrasonic Bone Surgery device (piezo-surgery) : Oral surgey application in BRONJ treatment: (Biphosphonate Related osteonecrosis of the jaws)

description: I farmaci Bifosfonati sono composti chimici analoghi del pirofosfato e sono in grado di determinare un rallentamento del riassorbimento osseo agendo sul metabolismo degli osteoclasti. L’Osteonecrosi dei mascellari(8-9-10) è stata classificata come una potenziale reazione avversa legata all’uso di farmaci Amino-Bifosfonati ed è da lungo tempo considerata una condizione di difficile risoluzione a causa del rallentato turn-over del metabolismo osseo. L’obiettivo di questo lavoro è stato quello di identificare eventuali presidi chirurgici in grado di risolvere il problema dell’osteonecrosi(11) ed eventualmente impedirne la recidiva, riportata in letteratura come una evenienza frequente. Nel presente studio sono stati trattati 16 pazienti (11 donne e 5 maschi) di età compresa tra 59 e 82 anni,(69aa media). Di questi: 10 pazienti erano stati sottoposti a terapia con bifosfonati a causa di neoplasie metastatizzate, di cui 9 con Acido Zoledronico e 1 con Acido Pamidronico; invece, 6 pz. erano stati trattati per osteoporosi con Acido Alendronico. Undici pazienti riportavano lesioni osteonecrotiche a carico dell’osso mandibolare (10 nella regione anteriore e 1 in quella posteriore); quattro pazienti avevano lesioni a carico del mascellare superiore; un paziente ha avuto una osteonecrosi a carico della mandibola prima ed a distanza di 4 mesi a carico del mascellare superiore; due sul mascellare anteriore, ed altri due sul mascellare posteriore. Per il trattamento chirurgico delle lesioni necrotiche sono state utilizzate attrezzature per la chirurgia ossea ad ultrasuoni ad alta potenza ( 90 Watt) e bassa frequenza (24-32kz) (Ultrasonic-Bone Surgery -U.B.S.). I risultati ottenuti hanno dimostrato che tutti i pazienti trattati avevano avuto una remissione dei sintomi ed una chiusura completa per prima o per seconda intenzione delle ferite entro le prime due settimane dall’intervento. Durante il follow-up (che va da un minimo di 6 mesi fino a 12 mesi) cui sono stati sottoposti tutti i pazienti, non si è manifestata ad oggi alcuna recidiva. Dovrebbero essere presi in considerazione altri pazienti ma gli attuali risultati incoraggiano ulteriori esperimenti in vivo/in vitro in merito all’uso della chirurgia ad ultrasuoni nel trattamento delle osteonecrosi.
DOI: 10.1285/i9788883051029p64
title: Dispositivi acustici impiantabili

description: I Dispositivi Acustici Impiantabili (DAI) sono degli ausili per l’udito. Presupposto indispensabile è, pertanto, che il paziente sia affetto da una diminuzione dell’udito. La perdita uditiva (ipoacusia) può essere di diverso tipo (neurosensoriale, trasmissiva, mista) e diversa entità (lieve, media, grave, profonda). Fra i DAI più noti possono essere menzionate due tipologie: 1. Impianti cocleari e 2. BAHA. Gli impianti cocleari trovano indicazione nel caso di ipoacusia neurosensoriale bilaterale di grave-profonda entità. Sia in età pediatrica che in età adulta. Il device viene posizionato (impiantato) all’interno della coclea (recettore dell’udito non più funzionante) e di fatto la sostituisce. Gli stimoli sonori che qui giungono stimolano elettricamente il nervo acustico che parte dalla coclea e che, a sua volta, invia questi impulsi al cervello per la loro interpretazione. Il sistema BAHA è un dispositivo finalizzato al recupero di perdita uditiva di tipo trasmissivo o misto. Ha quindi indicazioni totalmente diverse rispetto ad un impianto cocleare. Questo tipo di dispositivo prevede l’impianto di un pezzo di titanio (cosiddetta vite-pilastro) che viene inserito nella teca cranica dietro l’orecchio. Dopo un adeguato periodo necessario per la osteointegrazione, viene connesso un processore esterno per la elaborazione dei suoni che vengono trasmessi attraverso il pilastro-vite alle vie acustiche con ripresa della funziona uditiva.
DOI: 10.1285/i9788883051029p68
title: La fragilità ossea svelata dagli ultrasuoni può consentire la “produzione di salute” su larga scala: studio pilota in pazienti talassemici

description: Negli ultimi anni nuove tecnologie sono state rese disponibili per determinare la massa ossea basandosi sull’uso degli ultrasuoni, la cui trasmissione in una struttura porosa - come l’osso - dipende sia dalle caratteristiche fisiche del tessuto sia dalla sua microarchitettura. Nell’ambito del PROF (PRevenzione Osteoporosi Fratture) - progetto curato dall’ISBEM fin dal 2009 con alcune ASL del Sistema Sanitario Regionale pugliese - è stato attivato nell’ASL di Taranto un protocollo di studio su una specifica popolazione a rischio, quella dei soggetti affetti da β-talassemia, malattia genetica che causa una ridotta o una mancata sintesi della catena β-globinica dell’emoglobina, determinando un’anemia significativa. Tra le comorbilità maggiormente associate alla talassemia, di certo vi è l’osteoporosi che colpisce i pazienti fin da giovane età, con una prevalenza stimata intorno al 50-70% (vs il 15-17% della popolazione generale). Tutti i soggetti talassemici (n=88) hanno eseguito sia la densitometria ad ultrasuoni (QUS) sia quella basata su raggi X (DEXA) fra il 2008 e il 2010. Nonostante la prevalenza generale di osteoporosi misurata con le due tecniche risulti differente, dall’analisi dei dati emerge come la QUS sia in grado – al pari della DEXA, gold standard nella valutazione densitometrica ossea – di discriminare uno stato di demineralizzazione ossea in quei soggetti che avevano già subito una frattura ossea da fragilità. Il nostro studio dimostra come la QUS – metodica poco costosa e priva di radiazioni ionizzanti - fornisca una buona e affidabile stima del rischio fratturativo al pari della DEXA.
DOI: 10.1285/i9788883051029p73
title: Intensity Modulated Radiation Therapy with volumetric modulation (VMAT)

description: IMRT (Intensity Modulated Radiation Therapy) is the latest radiotherapy technique for high dose treatment of complex shaped tumors or neoplasm close to sensitive organs at risk. VMAT (Volumetric Modulated Arc Therapy) is next generation arc therapy technique which performs uninterrupted arc(s) around the patient, dramatically speeding treatment delivery and reducing treatment times to those required for “conventional” radiation therapy. Beam modulation is obtained by continuous changes in collimator morphology on the basis of target shape and in dose rate during gantry rotation around the patient. Since November 2010, in our institution, 257 patients were treated with VMAT. Plan evaluation was performed using Homogeneity and Conformity Index and a phantom (Delta 4) to control correspondence between calculated and delivered dose. In our experience VMAT provides to dose distributions comparable with most of other IMRT systems, but with a dramatic shortening of delivery time with considerable advantages in terms of treatment reproducibility (reduction of intrafraction movement of the patient), radioprotection and organization of LINAC spaces.
DOI: 10.1285/i9788883051029p80
title: Dosimetric verification of vmat dose distribution with DELTA4 Phantom

description: Radiation Oncology, has changed a great deal, undergoing an innovation and technical development; there has been an evolution from conformal radiotherapy techniques (3D-CRT), through advanced modalities like intensity-modulated radiation therapy (IMRT) and next volumetric modulated arc therapy (VMAT). VMAT technique requires a dedicated QA (Quality Assurance) procedure for dosimetric verification of a planned dose distribution to check for the agreement between a dose distribution calculated by the Treatment Planning System (TPS) and the corresponding measured dose distribution. Since November 2010, in Radiation Therapy Department of “V. Fazzi” hospital in Lecce (Italy), 257 patients were treated with VMAT and the corresponding dose distribution were verified with the Delta4 diode array phantom. Parameters used in the comparison between calculated e measured dose are the dose agreement (DA), the distance to agreement (DTA) and the 􀁊-index. The phantom measurements closely match the planned dose distributions in high and low dose-gradient region.
DOI: 10.1285/i9788883051029p84
title: Dinamic-arc-IMRT with Serial Tomotherapy

description: Intensity-modulated radiotherapy (IMRT) has been introduced into a wide spectrum of clinics worldwide. In tomotherapy, literally “slice therapy”, highly conformal treatments are possible because of an increase in the number of treatment slices into which the target is segmented would lead directly to an improvement in three-dimensional dose conformality.With Peacock System (NOMOS Corporation), the IMRT is doing so using conventional clinical linear accelerators (Linacs) fitted with an integrated multileaf collimator (MLC). This system comprised of the MIMiC, a tertiary “bolt-on” MLC, and a dedicated inverse treatment planning system (Corvus). The introduction of dynamic-arc-IMRT with Serial Tomotherapy started in the mid 1990. The first patient was treated in 1994. Between November 2007 and September 2012, at the Operative Unit of Radiotherapy of V. Fazzi Hospital of Lecce, 180 patients were treated with Serial Tomotherapy. Of those, 52 patients received Cerebral Ipofractionated Stereotactic IMRT with Talon; 66 prostate cancer patients were designed to deliver SIB-IMRT (78,4Gy to the prostate while simultaneously delivering 66,5Gy to seminal vesicles in 35 fractions); 20 patients received SIB-IMRT for Nasopharyngeal cancer (69.9Gy in 2.33Gy fractions to PTV1, 60Gy in 2Gy fractions to PTV2 and 54Gy in 1.8Gy fractions to PTV3), 28 patients received brain IMRT and 14 patients were irradiated on the spine and bone marrow for palliation or other. This slice-wise method of treatment is known to produce extremely conformal dose distributions due to its ability to specifically match the dose distribution on each slice to the shape of the target volume on that same slice. The major criticism of contemporary IMRT is that we cannot be certain of the geometry (relative position and shape) of the tumour or organs at risk (OARs) at each treatment episode. Careful and exacting protocols are employed to attempt to localize these in the treatment plan and during the patient’s set-up.
DOI: 10.1285/i9788883051029p91
title: Analysis of uncertainties in dose distribution due to geometrical deviation of target from isocenter in serial tomotherapy

description: The tomotherapy system in radiation therapy department of “V. Fazzi” hospital in Lecce (Italy) is a serial device. It means that the coverage of the target is obtained by moving the couch in and out the gantry position. It has been shown that the choice of target positioning respect to the isocenter reflects on dose distribution in terms of heterogeneities. The entity of the heterogeneities can reach 10% in abutment regions nearby the isocenter. Moreover, by using gantry rotations less than 300 degrees, hot and cold spots can be seen above and over the isocenter. Aim of the present work is to characterize the performance of the serial tomotherapy device in order to avoid, as more as possible, heterogeneities in the abutment regions.
DOI: 10.1285/i9788883051029p96
title: Analysis of time statistics of extreme variations of heart beat fluctuations

description: We analyzed heart beat fluctuations in terms of return times of extreme values of the RR increments. We considered 24 hours Holter ECG signals of 90 healthy individuals and 90 unhealthy ones suffering of congestive heart failure (chf). The increment time series RR corresponding to sleep and daily activity were studied separately. In both cases, our results pointed out strong differences in the median return times of the positive high thresholds between healthy and unhealthy people.
DOI: 10.15468/rq0g1p
title: Laupur
DOI: 10.6073/pasta/03c70ae868447d87bce017c2451f6def
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1998-01-25
DOI: 10.6073/pasta/384f31c8e0cd5994a070c5cffd04a310
title: Landsat Enhanced Thematic Mapper image data for California Current Ecosystem LTER collected on 1993-11-23
DOI: 10.6073/pasta/3a8d2afb9386ba2e6e8fea56f7c21d13
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1983-01-08
DOI: 10.6073/pasta/4d0590dbf6dbd0f4ee6191d3683bb41b
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1982-11-21
DOI: 10.6073/pasta/7c6af60af638db13c3503d14d8f5fa02
title: Landsat Enhanced Thematic Mapper image data for California Current Ecosystem LTER collected on 1993-11-07
DOI: 10.6073/pasta/9837189fa274f121f07a5d53d589d696
title: Landsat Enhanced Thematic Mapper image data for Palmer Antarctica LTER collected on 1989-11-26
DOI: 10.6073/pasta/b02e3049bc42913cee8a8bb5a87d11fd
title: Landsat Enhanced Thematic Mapper image data for Palmer Antarctica LTER collected on 1988-03-28
DOI: 10.6073/pasta/be15f00690e376f8ed970dc14cc8a0e1
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1998-02-10
DOI: 10.6073/pasta/bfe3a889d1a980b59e6d2577bb345800
title: Landsat Enhanced Thematic Mapper image data for Central Arizona - Phoenix LTER collected on 1998-02-26
DOI: 10.6073/pasta/c064f86d0282531f89ab12a5ee604835
title: Landsat Enhanced Thematic Mapper image data for California Current Ecosystem LTER collected on 1993-10-22