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Assessment of small intestinal bacterial overgrowth in uncomplicated acute diverticulitis of the colon

World Journal of Gastroenterology 2005年第18期11卷 2773-2776页

作者： Antonio Tursi Giovanni Brandimarte gian marco giorgetti Walter Elisei Digestive Endoscopy Unit "Lorenzo Bonomo" Hospital Andria Italy Department of Internal Medicine Division of Gastroenterology "Cristo Re" Hospital Rome Italy Clinical Nutrition Unit "S. Eugenio" Hospital Rome Italy

AIM: Small intestinal bacterial overgrowth (SIBO) maycontribute to the appearance of several gastrointestinal nonspecific symptoms. Acute diverticulitis is affected by some similar symptoms and bacterial colonic overgrowth. We assessed the prevalence of SIBO in acute uncomplicated diverticulitis and evaluated its influence on the clinical course of the ***: We studied 90 consecutive patients (39 males, 51 females, mean age 67.2 years, range 32-91 years). Sixty-one patients (67.78%) and 29 patients (32.22%) were affected by constipation-or diarrhea-prevalent diverticulitis respectively. All subjects were investigated by lactulose H2-breath test at the entry and at the end of treatment. We also studied a control group of 20 healthy subjects (13 males, 7 females, mean age 53 years, range 22-71 years).RESULTS: Oro-cecal transit time (OCTT) was delayed in67/90 patients (74.44%) (range 115-210 min, mean 120 min). Fifty-three of ninety patients (58.88%) showed SIBO, while OCTT was normal in 23/90 patients (25, 56%). In the control group, the mean OCTT was 88.2 min (range 75-135 min). The difference between diverticulitic patients and healthy subjects was statistically significant (P＜0.01). OCTT was longer in constipation-prevalent disease than in diarrheaprevalent disease [180.7 min (range 150-210 min) vs 121 min (range 75-180 min) (P＜0.001)], but no difference in bacterial overgrowth was found between the two forms of *** treatment with rifaximin plus mesalazine for 10 d, followed by mesalazine alone for 8 wk, 70 patients (81.49%) were completely asymptomatic, while 16 patients (18.60%) showed only slight symptoms. Two patients (2.22%) had recurrence of diverticulitis, and two other patients (2.22%) were withdrawn from the study due to side-effects. Seventy-nine of eighty-six patients (91.86%) showed normal OCTT (range 75-105 min, mean 83 min), while OCTT was longer, but it was shorter in the remaining seven (8.14%) patients (range 105-115 min

关键词： Small intestinal bacterial overgrowth Oro-oecal transit time

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Assessment of autonomic function in untreated adult coeliac disease

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World Journal of Gastroenterology 2004年第18期10卷 2715-2718页

作者： gian marco giorgetti Antonio Tursi Cesare Iani Fiavio Areiprete Giovanni Brandimarte Ambrogio Capria Luigi Fontana Department of Internal Medicine Clinical Nutrition Unit"S.Eugenio" HospitalRomeItaly Digestive Endoscopy Unit "Lorenzo Bonomo"HospitalAndria (BA)Italy Division of Neurology "S.Eugenio"HospitalRomeItaly Department of Internal Medicine Division of Gastroenterology"Cristo Re" HospitalRomeItaly Department of Internal Medicine and Immunology "Tor Vergata" UniversityRomeItaly

AIM: Some recent studies showed that alteration of upper-gut motility in coeliac disease may be related to dysfunction of autonomic nervous system. The aim of our study was to investigate whether autonomic nervous system was altered in untreated and unselected coeliac disease ***: We studied 8 untreated and consecutive coeliac disease patients (2 males and 6 females, age range 37±14.5 years). Histological evaluation of duodenal mucosa, anti-gliadin antibodies (AGA), antiendomysial antibodies (EMA) and anti-tTG antibodies and sorbitol H2 breath test were performed in all patients. Extrinsic autonomic neuropathy was assessed by the standardized measurement of cardiovascular reflexes (lying-to-standing,Valsalva manoeuvre, deep breathing, sustained handgrip).The results obtained were compared with a healthy,asymptomatic control group (6 males and 7females, age range 42.3±13.5 years).RESULTS: Coeliac patients exhibited a lower increase of PAS as a response to isometric effort, a reduction of spectral power LF as a response to clinostatic position,but without statistical significance. Also they showed a lower tolerance to orthostatic position, associated with a latent disequilibrium of sympathetic-vagal balance, a relative prevalence of parasympathetic component of the autonomic function. However, these results were not statistically significant when compared with control group(P = n.s.). And they were unchanged after 6 and 12 mo of gluten-free ***: This study failed to confirm a significant correlation between autonomic dysfunction and coeliac disease, yet we could not exclude a role of autonomic dysfunction in the genesis of systemic symptoms in some coeliacs.

关键词： Adult Aged Autonomic Nervous System Diseases Blood Pressure Celiac Disease Female Gluten dosage Heart Rate Humans Hypotension, Orthostatic Male Middle Aged

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Photorealistic modelling of metals from first principles

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npj Computational Materials 2019年第1期5卷 1-12页

作者： gianluca Prandini gian-marco Rignanese Nicola Marzari Theory and Simulation of Materials(THEOS)and National Centre for Computational Design and Discovery of Novel Materials(MARVEL) École Polytechnique Fédérale de Lausanne1015 LausanneSwitzerland Institute of Condensed Matter and Nanosciences(IMCN) Universitécatholique de Louivain1348 Louvain-la-NeuveBelgium

The colours of metals have attracted the attention of humanity since ancient times,and coloured metals,in particular gold compounds,have been employed for tools and objects symbolizing the aesthetics of *** this work,we develop a comprehensive framework to obtain the reflectivity and colour of metals,and show that the trends in optical properties and the colours can be predicted by straightforward first-principles techniques based on standard *** apply this to predict reflectivity and colour of several elemental metals and of different types of metallic compounds(intermetallics,solid solutions and heterogeneous alloys),considering mainly binary alloys based on noble *** validate the numerical approach through an extensive comparison with experimental data and the photorealistic rendering of known coloured metals.

关键词： alloys intermetallics metals

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Materials property prediction for limited datasets enabled by feature selection and joint learning with MODNet

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npj Computational Materials 2021年第1期7卷 731-738页

作者： Pierre-Paul De Breuck Geoffroy Hautier gian-marco Rignanese UCLouvain Institute of Condensed Matter and Nanosciences(IMCN)Louvain-la-NeuveBelgium Dartmouth College Thayer School of EngineeringHanoverNHUSA

In order to make accurate predictions of material properties,current machine-learning approaches generally require large amounts of data,which are often not available in *** this work,MODNet,an all-round framework,is presented which relies on a feedforward neural network,the selection of physically meaningful features,and when applicable,*** to being faster in terms of training time,this approach is shown to outperform current graph-network models on small *** particular,the vibrational entropy at 305 K of crystals is predicted with a mean absolute test error of 0.009 meV/K/atom(four times lower than previous studies).Furthermore,joint learning reduces the test error compared to single-target learning and enables the prediction of multiple properties at once,such as temperature ***,the selection algorithm highlights the most important features and thus helps to understand the underlying physics.

关键词： learning prediction property

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Diagnostic detection with cardiac tomography and resonance of extremely rare coronary anomaly:A case report and review of literature

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World Journal of Clinical Cases 2019年第5期7卷 628-635页

作者： Nicolò Schicchi marco Fogante gian marco Giuseppetti Andrea Giovagnoni Department of Radiology Azienda Ospedaliero-Universitaria Ospedali Riuniti Department of Radiology Università Politecnica delle Marche

BACKGROUND The association of two congenital coronary artery anomalies(CAAs) is extremely rare but represents one of the main cause of sudden cardiac death in young athletes. Although coronary angiography(CX-A) is still widely used in childhood, cardiac magnetic resonance(C-MRI) and cardiac computed tomography(C-CT) have recently taken on an increasing diagnostic role in early detection of CAAs and concomitant congenital cardiac *** SUMMARY A healthy 10-year-old male patient was referred to the Radiological Department of our Institution due to no evidence of left coronary artery in echocardiographic examination. With C-MRI was detected marked myocardial trabeculation and was suspected anomalous origin and course of left circumflex(LCx) artery and of left anterior descending(LAD) artery. With third generation Dual Source C-CT192x2-sections(SOMATOM Force, Siemens, Germany) was confirmed anomalous origin of LCx artery from right pulmonary artery associated with anomalous origin of LAD artery from right coronary artery with course in front of right ventricular outflow tract. The patient underwent surgical treatment with reimplantation of the anomalous LCX and LAD arteries into the wall of ascending aorta, with no postoperative complications. The patient remained asymptomatic and follow-up C-MRI scan four months after operation showed complete success of surgery *** This case highlights the diagnostic potential of C-CT and C-MRI in evaluation of CAAs and of cardiac morphology and functionality, with very low radiation dose and without the risks related to invasive procedure.

关键词： Coronary anomalies Cardiac computed tomography Cardiac magnetic resonance Case report Coronary artery anomalies

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Fully digital intensity modulated LIDAR

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Defence Technology（防务技术） 2016年第4期12卷 290-296页

作者： Fabio POLLASTRONE gian Carlo CARDARILLI Roberto PIZZOFERRATO marco RE Department FSN FUSTEC–IEE-ENEA Frascati Department of Electronics Engineering University of Rome "Tor Vergata" Department of Industrial Engineering University of Rome "Tor Vergata"

In several applications, such as collision avoidance, it is necessary to have a system able to rapidly detect the simultaneous presence of different obstacles. In general, these applications do not require high resolution performance, but it is necessary to assure high system reliability also within critical scenarios, as in the case of partially transparent atmosphere or environment in presence of multiple objects(implying multiple echoes having different delay times.) This paper describes the algorithm, the architecture and the implementation of a digital Light Detection and Ranging(LIDAR) system based on a chirped optical carrier. This technique provides some advantages compared to the pulsed approach, primarily the reduction of the peak power of the laser. In the proposed architecture all the algorithms for signal processing are implemented using digital hardware. In this way, some specific advantages are obtained: improved detection performance(larger dynamics, range and resolution), capability of detecting multiple obstacles having different echoes amplitude, reduction of the noise effects, reduction of the costs, size and weight of the resulting equipment. The improvement provided by this fully digital solution is potentially useful in different applications such as: collision avoidance systems, 3D mapping of environments and, in general, remote sensing systems which need wide distance and dynamics.

关键词： CW-IM LIDAR Chirp Laser Obstacle Avoidance

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A simple denoising approach to exploit multi-fidelity data for machine learning materials properties

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npj Computational Materials 2022年第1期8卷 2226-2238页

作者： Xiaotong Liu Pierre-Paul De Breuck Linghui Wang gian-marco Rignanese Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Information Science and Technology UniversityNo.35 Beisihuan Middle RoadBeijing100101BeijingP.R.China School of Computer Beijing Information Science and Technology UniversityNo.35 Beisihuan Middle RoadBeijing100101BeijingP.R.China Institute of Condensed Matter and Nanosciences UCLouvainChemin desÉtoiles 8Louvain-la-Neuve1348Belgium School of Materials Science and Engineering Northwestern Polytechnical UniversityNo.127 Youyi West RoadXi’an710072ShaanxiP.R.China

Machine-learning models have recently encountered enormous success for predicting the properties of *** are often trained based on data that present various levels of accuracy,with typically much less high-than low-fidelity *** order to extract as much information as possible from all available data,we here introduce an approach which aims to improve the quality of the data through *** investigate the possibilities that it offers in the case of the prediction of the band gap using both limited experimental data and density-functional theory relying on different exchange-correlation *** analyzing the raw data thoroughly,we explore different ways to combine the data into training sequences and analyze the effect of the chosen *** also study the effect of applying the denoising procedure several times until ***,we compare our approach with various existing methods to exploit multi-fidelity data and show that it provides an interesting improvement.

关键词： approach learning exploit

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Effect of Milling and Parboiling Processes on Arsenic Species Distribution in Rice Grains

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Rice science 2021年第4期28卷 402-408,I0035-I0037页

作者： Maria Chiara Fontanella Maria Martin Daniele TENNI gian Maria Beone marco Romani Department for Sustainable Food Process Catholic University of Sacred Heart of PiacenzaPiacenza 29100Italy Department of Agricultural Forest and Food SciencesUniversity of TorinoTorino 10095Italy Rice Research Center National Rice BoardCastello d’Agogna 27030Italy

This study identified the role of milling and parboiling on arsenic(As)content and its species in large numbers of rice *** As contents were 108±33μg/kg in polished rice grains(PR),159±46μg/kg in unpolished rice grains(UR),145±42μg/kg in parboiled polished rice grains(PPR)and 145±44μg/kg in parboiled unpolished rice grains(PUR).The percentages of inorganic As(iAs)were 66%±8%in PR and from 72%to 77%in other grain *** polishing process reduced the As content in the rice grains,removing outer part of the UR with high amount of As,whereas the parboiling technique transferred the semimetal content within the *** As and iAs contents were not significantly different in UR,PPR and PUR,homogenizing its distribution inside the *** results allowed to understand how different operations affect As fate and its chemical forms in grains.

关键词： rice arsenic inductively coupled plasma-mass spectrometer milling parboiling laser ablation

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Is Takotsubo cardiomyopathy still looking for its own nosological identity?

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World Journal of Cardiology 2022年第10期14卷 557-560页

作者： Riccardo Scagliola gian marco Rosa Cardiovascular Disease Unit IRCCS Ospedale Policlinico San MartinoGenoa 16132Italy

Despite several efforts to provide a proper nosological framework for Takotsubo cardiomyopathy(TCM),this remains an unresolved matter in clinical *** clinical,pathophysiologic and histologic findings support the conceivable hypothesis that TCM could be defined as a unique pathologic entity,rather than a distinct subset of myocardial infarction with non-obstructive coronary *** investigations are needed in order to define TCM with the most appropriate disease taxonomy.

关键词： Takotsubo cardiomyopathy Myocardial infarction with non-obstructive coronary arteries Disease classification

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Transparent conducting materials discovery using high-throughput computing

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npj Computational Materials 2019年第1期5卷 606-618页

作者： Guillaume Brunin Francesco Ricci Viet-Anh Ha gian-marco Rignanese Geoffroy Hautier UCLouvain Institut de la Matière Condensée et des Nanosciences(IMCN)Chemin desÉtoiles 8Louvain-la-Neuve 1348Belgium

Transparent conducting materials(TCMs)are required in many applications from solar cells to transparent *** high performance materials combining the antagonistic properties of transparency and conductivity has been challenging especially for p-type ***,high-throughput ab initio computational screening has emerged as a formidable tool for accelerating materials *** this review,we discuss how this approach has been applied for identifying *** provide a brief overview of the different materials properties of importance for TCMs(e.g.,dopability,effective mass,and transparency)and present the ab initio techniques available to assess *** focus on the accuracy of the methodologies as well as their suitability for high-throughput ***,we review the different high-throughput computational studies searching for new TCMs and discuss their differences in terms of methodologies and main findings.

关键词： transparency conducting suitability

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