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Acute ischemic colitis during scuba diving: Report of a unique case

World Journal of Gastroenterology 2008年第20期14卷 3262-3265页

作者： Konstantinos Goumas Androniki Poulou Ioannis Tyrmpas Dimitrios Dandakis Stavros Bartzokis Magdalini Tsamouri kalipso barbati Dimitrios Soutos Department of Gastroenterology Red Cross Hospital of Athens Department of Pathology Red Cross Hospital of Athens

The presentation of clinical symptoms due to decompression during diving, varies significantly, as mainly minor disturbances for the gastrointestinal tract in particular have been reported. The following case debates whether diving can cause severe symptoms from the gastrointestinal system. We describe a clinical case of ischemic colitis presented in a 27-year-old male, who manifested abdominal pain while in the process of scuba diving 20 meters undersea, followed by bloody diarrhoea as soon as he ascended to sea level. Taking into account his past medical history, the thorough, impeccable clinical and laboratory examinations and presence of no other factors predisposing to ischemia of the colon, we assume that a possible relationship between diving conditions and the pathogenesis of ischemic colitis may exist. This unusual case might represent a hematologic manifestation of decompression sickness, due to increased coagulability and/or transient air emboli, occurring during a routine scuba diving ascent to sea level.

关键词： Air emboli Barotraumas Coagulability Decompression sickness Ischemic colitis Scuba diving

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Conversion of the refractory ammonia and acetic acid in catalytic wet air oxidation of animal byproducts

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Journal of Environmental Sciences 2011年第3期23卷 520-528页

作者： Virginie Fontanier Sofiane Zalouk Stéphane barbati Aix-Marseille Universite's-CNRS (UMR 6264)-Laboratoire de Chimie Provence:quipe Chimie de l'Environnement Continental-3 Place Victor Hugo (case 29)-13331 Marseille cedex 3France

Wet air oxidation （WAO） and catalytic wet air oxidation （CWAO） of slaughtered animal byproducts （ABPs） were investigated. Two step experiment was carried out consisting of a non-catalysed WAO run followed by a CWAO run at 170-275 ℃, 20 MPa, and reaction time 180 min. The WAO （lst step） of sample （5 g/L total organic carbon （TOC）） yielded （82.0 ±4）% TOC removal and （78.4 ± 13.2）% conversion of the initial organic-N into NH4＋-N. Four metal catalysts （Pd, Pt, Rh, Ru） supported over alumina have been tested in catalytic WAO （2nd step） at elevated pH to enhance ammonia conversion and organic matter removal, particularly acetic acid. It was found that the catalysts Ru, Pt, and Rh had significant effects on the TOC removal （95.1%, 99.5% and 96.7%, respectively） and on the abatement of ammonia （93.4%, 96.7% and 96.3%, respectively） with high nitrogen selectivity. The catalyst Pd was found to have the less activity while Pt had the best performance. The X-Ray diffraction analysis showed that the support of catalyst was not stable under the experimental conditions since it reacted with phosphate present in solution. Nitrite and nitrate ions were monitored during the oxidation reaction and it was concluded that CWAO of ammonia in real waste treatment framework was in good agreement with the results obtained from the literature for ideal solutions of ammonia.

关键词： wet oxidation, heterogeneous catalysis animal byproducts acetic acid ammonia, nitrite nitrate

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Carbon mitigation potential of different forest ecosystems under climate change and various managements in Italy

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Ecosystem Health and Sustainability 2015年第8期1卷 1-10页

作者： C.Calfapietra A.barbati L.Perugini B.Ferrari G.Guidolotti A.Quatrini P.Corona Institute of Agro-environmental and Forest Biology National Research Council(BAF-CNR)Porano(TR)05010 Italy Czechglobe Global Change Research CentreAcademy of Scences of the Czech RepublicBmo 60300 Czech Republic Department for Innovation in Biological Agro food and Forest SystemsDIBAEUniversity of TusciaViterbo 01100 Italy Consiglio per la ricerca in agnicoltura e l'analisi dell'economia agraria Foresty Research Centre(CREA-SEL)Arezzo 52100 Italy

This study reviews carbon stocks and carbon dynamics in diferent types of forest land in Italy:ordinary managed forests,forest plantations,old growth forests,and trees outside *** management,combined with global environmental changes,increases the capacity of carbon uptake of ordinary managed *** plantations,particularly the ones subject to short-rotation forestry systems,potentially have high soil carbon accumulation,especially in agricultural *** growth forests,recently discovered as a carbon sink,cover a significant surface area in ***,the trees outside forests may represent a sensible carbon stock,especially in the context of urban *** study points out the management actions that can be implemented in Italy to increase the carbon stocks of different forest ecosystems,such as increasing the mean annual increment in managed forests,enhancement of the national network of old growth forests,and expansion of forest plantations in suitable *** aspects have important implications after the recent recognition of the Land Use,Land Use Change and Forestry sector in the EU target within the 2030 Climate and Energy Policy Framework.

关键词： carbon credits forest management Italy old growth forests short-rotation forestry trees outside forests.

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阿尔茨海默病的非血浆铜蓝蛋白血清铜过量与MMSE、CSF β-淀粉样蛋白和h-tau水平相关

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世界核心医学期刊文摘(神经病学分册) 2006年第12期 13-14页

作者： Squitti R. barbati G. Rossi L. 郭俊 00186 Rome Dr.AFaR Department of Neuroscience AFaR Hospital Fatebenefratelli Italy

OBJECTIVE:To assess whether serum copper in Alzheimer disease(AD)correlates with cognitive scores,β-amyloid,and other CSF markers of ***:The authors studied copper,ceruloplasmin,total peroxide,and antioxidants levels(TRAP)in serum;β-amyloid in plasma;and copper,β-amyloid,h-tau,and P-tau in the CSF of 28 patients with AD and 25 healthy controls,in relation to clinical ***:Serum copper(p < 0.0001),peroxides(p = 0.002),a copper fraction unexplained by ceruloplasmin(p < 0.0001),and CSF h-tau(p = 0.001)were increased in AD,whereas serum TRAP(p = 0.03)and CSF β-amyloid were decreased(p < 0.0001).Plasma β-amyloid increased with age in healthy controls(r = 0.6;p = 0.05).CSF markers of AD correlated with serum copper *** copper was partially dependent on the serum copper fraction unexplained by ceruloplasmin(t = 2.2,p = 0.04).CSF β-amyloid seemed to be related to serum copper(r =-0.46;p = 0.002).Mini-Mental Status Examination scores correlated positively with β-amyloid(r = 0.46,p = 0.002)and inversely with copper unexplained by ceruloplasmin(r =-0.45,p = 0.003).CONCLUSIONS:The authors’results confirm the existence of changes in copper component distribution,particularly the copper fraction unexplained by ceruloplasmin and support the hypothesis of a β-amyloid and copper connection in Alzheimer disease.

关键词： β-淀粉样蛋白阿尔茨海默病 MMSE h-tau 血浆铜蓝蛋白金属蛋白 CSF 血清铜

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