21 research outputs found

    Efficient synthesis of alkali borohydrides from mechanochemical reduction of borates using magnesium-aluminum-basedwaste

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    Lithium borohydride (LiBH4) and sodium borohydride (NaBH4) were synthesized via mechanical milling of LiBO2, and NaBO2 with Mg-Al-based waste under controlled gaseous atmosphere conditions. Following this approach, the results herein presented indicate that LiBH4 and NaBH4 can be formed with a high conversion yield starting from the anhydrous borates under 70 bar H2. Interestingly, NaBH4 can also be obtained with a high conversion yield by milling NaBO2·4H2O and Mg-Al-based waste under an argon atmosphere. Under optimized molar ratios of the starting materials and milling parameters, NaBH4 and LiBH4 were obtained with conversion ratios higher than 99.5%. Based on the collected experimental results, the influence of the milling energy and the correlation with the final yields were also discussed.Fil: Le, Thi Thu. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; AlemaniaFil: Pistidda, Claudio. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; AlemaniaFil: Puszkiel, Julián Atilio. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; Alemania. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Milanese, Chiara. Universita Degli Studi Di Pavia; ItaliaFil: Garroni, Sebastiano. University of Sassari; ItaliaFil: Emmler, Thomas. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; AlemaniaFil: Capurso, Giovanni. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; AlemaniaFil: Gizer, Gökhan. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; AlemaniaFil: Klassen, Thomas. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; Alemania. Helmut Schmidt University; Alemania. University of the Federal Armed Forces Hamburg; AlemaniaFil: Dornheim, Martin. Helmholtz Zentrum Geesthacht GmbH. Institute of Materials Research, Materials Technology; Alemani

    Validation of PARADISE 24 and Development of PARADISE-EDEN 36 in Patients with Dementia

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    Dementia was one of the conditions focused on in an EU (European Union) project called “PARADISE” (Psychosocial fActors Relevant to brAin DISorders in Europe) that later produced a measure called PARADISE 24, developed within the biopsychosocial model proposed in the International Classification of Functioning Disability and Health (ICF). The aims of this study are to validate PARADISE 24 on a wider sample of patients with mild to moderate dementia to expand PARADISE 24 by defining a more specific scale for dementia, by adding 18 questions specifically selected for dementia, which eventually should be reduced to 12. We enrolled 123 persons with dementia, recruited between July 2017 and July 2019 in home care and long-term care facilities, in Italy, and 80 participants were recruited in Warsaw between January and July 2012 as part of a previous cross-sectional study. The interviews with the patient and/or family were conducted by health professionals alone or as a team by using the Paradise data collection protocol. The psychometric analysis with the Rasch analysis has shown that PARADISE 24 and the selection of 18 additional condition-specific items can be expected to have good measurement properties to assess the functional state in persons with dementia

    Medeuro : the longing for identity and community among Maltese migrant settlers in North Africa

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    Based largely on materials held in the Service des Periodiques at the Bibliotheque Nationale de Tunisie in Tunis, and especially on content anaylsis of a 1930s newspaper Melita published in Sousse. this study explores the yearning for and the anguish of a cultural survivance among Maltese migrant settlers in North Africa, above all the retention of Maltese as a language of expression, affinity and identification, at a time when Maltese itself was experiencing a literary rebirth. However, such a campaign is undertaken in a 'non-Maltese' context, where moreover, in addition to separation and distance, the influence of European empires-the French, the British and the Italian-is pronounced, if not dominant, thus interfering with any continued loyalty to one mother tongue or mother country. Masterminding the intellectual push for a collective self-identity anchored in language, literature, history and religion, is a leading francophone litterateur whose family had settled in Algeria from the island of Gozo. What is also offered here, in the annotations, is a fairly comprehensive bibliography of Maltese migrant settlement in northern Africa with special reference to lesser known articles and other publications not available in English.peer-reviewe

    Association of genetic polymorphisms with survival of pancreatic ductal adenocarcinoma patients

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    Germline genetic variability might contribute, at least partially, to the survival of pancreatic ductal adenocarcinoma (PDAC) patients. Two recently performed genome-wide association studies (GWAS) on PDAC overall survival (OS) suggested (P < 10-5) the association between 30 genomic regions and PDAC OS. With the aim to highlight the true associations within these regions, we analyzed 44 single-nucleotide polymorphisms (SNPs) in the 30 candidate regions in 1722 PDAC patients within the PANcreatic Disease ReseArch (PANDoRA) consortium. We observed statistically significant associations for five of the selected regions. One association in the CTNNA2 gene on chromosome 2p12 [rs1567532, hazard ratio (HR) = 1.75, 95% confidence interval (CI) 1.19-2.58, P = 0.005 for homozygotes for the minor allele] and one in the last intron of the RUNX2 gene on chromosome 6p21 (rs12209785, HR = 0.88, 95% CI 0.80-0.98, P = 0.014 for heterozygotes) are of particular relevance. These loci do not coincide with those that showed the strongest associations in the previous GWAS. In silico analysis strongly suggested a possible mechanistic link between these two SNPs and pancreatic cancer survival. Functional studies are warranted to confirm the link between these genes (or other genes mapping in those regions) and PDAC prognosis in order to understand whether these variants may have the potential to impact treatment decisions and design of clinical trials. © The Author 2016. Published by Oxford University Press. All rights reserved

    Association of genetic polymorphisms with survival of pancreatic ductal adenocarcinoma patients

    No full text
    Germline genetic variability might contribute, at least partially, to the survival of pancreatic ductal adenocarcinoma (PDAC) patients. Two recently performed genome-wide association studies (GWAS) on PDAC overall survival (OS) suggested (P < 10(-5)) the association between 30 genomic regions and PDAC OS. With the aim to highlight the true associations within these regions, we analyzed 44 single-nucleotide polymorphisms (SNPs) in the 30 candidate regions in 1722 PDAC patients within the PANcreatic Disease ReseArch (PANDoRA) consortium. We observed statistically significant associations for five of the selected regions. One association in the CTNNA2 gene on chromosome 2p12 [rs1567532, hazard ratio (HR) = 1.75, 95% confidence interval (CI) 1.19-2.58, P = 0.005 for homozygotes for the minor allele] and one in the last intron of the RUNX2 gene on chromosome 6p21 (rs12209785, HR = 0.88, 95% CI 0.80-0.98, P = 0.014 for heterozygotes) are of particular relevance. These loci do not coincide with those that showed the strongest associations in the previous GWAS. In silico analysis strongly suggested a possible mechanistic link between these two SNPs and pancreatic cancer survival. Functional studies are warranted to confirm the link between these genes (or other genes mapping in those regions) and PDAC prognosis in order to understand whether these variants may have the potential to impact treatment decisions and design of clinical trials

    Association of genetic polymorphisms with survival of pancreatic ductal adenocarcinoma patients

    No full text
    Germline genetic variability might contribute, at least partially, to the survival of pancreatic ductal adenocarcinoma (PDAC) patients. Two recently performed genome-wide association studies (GWAS) on PDAC overall survival (OS) suggested (p<10-5) the association between 30 genomic regions and PDAC OS. With the aim to highlight the true associations within these regions, we analysed 44 single-nucleotide polymorphisms (SNPs) in the 30 candidate regions in 1722 PDAC patients within the PANcreatic Disease ReseArch (PANDoRA) consortium. We observed statistically significant associations for five of the selected regions. One association in the CTNNA2 gene on chromosome 2p12 (rs1567532, HR=1.75, 95% CI 1.19-2.58, p=0.005 for homozygotes for the minor allele) and one in the last intron of the RUNX2 gene on chromosome 6p21 (rs12209785, HR=0.88, 95% CI 0.80-0.98, p=0.014 for heterozygotes) are of particular relevance. These loci do not coincide with those that showed the strongest associations in the previous GWASs. In silico analysis strongly suggested a possible mechanistic link between these two SNPs and pancreatic cancer survival. Functional studies are warranted to confirm the link between these genes (or other genes mapping in those regions) and PDAC prognosis in order to understand whether these variants may have the potential to impact treatment decisions and design of clinical trials

    Genetic susceptibility to pancreatic cancer and its functional characterisation: the PANcreatic Disease ReseArch (PANDoRA) consortium.

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    Pancreatic cancer is the fourth leading cause of cancer deaths in the European Union and in the USA, but little is known about its genetic susceptibility. The PANcreatic Disease ReseArch (PANDoRA) consortium was established to unite the efforts of different research groups; its aim is to create a large bio-database to uncover new genetic factors for pancreatic cancer risk, response to treatment, and patient survival. So far 2220 cases of pancreatic adenocarcinoma, a smaller number of cases of endocrine pancreatic tumours (n=86), chronic pancreatitis (n=272) and 3847 healthy controls have been collected. As a collective effort of the consortium, SNPs associated with pancreatic adenocarcinoma risk from a genome-wide association study performed in Caucasians were replicated. The possibility that the same genetic polymorphisms may influence patient survival as well was also addressed. This collective effort is particularly important for pancreatic cancer because it is a relatively rare disease for which little is known about aetiopathogenesis and risk factors. The recruitment of additional collaborators and partner institutions is continuously on-going
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