Heats of Immersion of Uranium Oxides in n-Nitropropane III.

Heats of wetting· of uranium oxides with different O / U ratios were measured in n-nitropropane and these heats were found to decrease with increasing oxygen content of the oxide\u27s. This behaviour was compared with the opposite t endency in water. It was concluded that a definite amount of U03 is relatively easily formed on the surface of U02 at lower temperatures

Die Synthese von Calciummetatitanat bei niedriger Temperatur. I.

Die Reaktionsfanigkeit des Gemenges Ca(OH)2 und Ca(N03h mit Ti02 wurde eingehend studiert. Fiir ein standardes Ti02 wurde die Abhangigkeit der Ausbeute von der Reaktionsdauer, Temperatur, Dispersitat der Agglomerate, Zusammensetzung und Uberschuss des Ca(OH)2 und Ca(N03)2 Gemenges untersucht. Verglichen wurde die Ausbeute wenn Ca(OH)2 im Gemenge mit Cao ersetzt wird, sowie die Ausbeute bei Reaktionen mit anderen Calciumverbindungen. Auf Grund dieser Untersuchungen kann auf den Einfluss der Schmelze, Atmosphare und Cao in statu nascendi auf den Verlauf dieser Synthese geschlossen werden. Mit geeignetem Ti02 Gel kann man bei 575oc mit einem Gemenge von 1,0 Ti02 + 0,7 Ca(OH)2 + 0,3 Ca(N03)2 bei 1-2 stiindiger Reaktionsdauer praktisch eine 100°/e Ausbeute von Cao . Ti02 erzielen

Die Synthese von Calciummetatitanat bei niedriger Temperatur. II Zur Kenntnis der Reaktion zwischen CaC03 und Ti02 in der C02-Atmosphare oder an der Luft

Die Re aktion wurde zwis che n 800 und 1000°C unter sucht. Im Gegen satz zu d en in de r Lite r atur gefund e n e n A n gab en ist es nicht gelunge n die q u a n titative Synthese zu erzielen . F estges t ellt wurde d e r positive Ein fl u s s d er Ca CO a-Dberschusses. Di e C02- -Atmospha re begi.in s tigt b ei a lle n Be ding u ngen e ine besser e Umsetzung des Ti02

Die Synthese von Calciummetatitanat bei niedriger Temperatur. II Zur Kenntnis der Reaktion zwischen CaC03 und Ti02 in der C02-Atmosphare oder an der Luft

Die Re aktion wurde zwis che n 800 und 1000°C unter sucht. Im Gegen satz zu d en in de r Lite r atur gefund e n e n A n gab en ist es nicht gelunge n die q u a n titative Synthese zu erzielen . F estges t ellt wurde d e r positive Ein fl u s s d er Ca CO a-Dberschusses. Di e C02- -Atmospha re begi.in s tigt b ei a lle n Be ding u ngen e ine besser e Umsetzung des Ti02

Raising awareness on cyber security of ECDIS

In the maritime transport, the Electronic Chart Display and Information System (ECDIS) has been developed into a complex computer-based ship critical operational technology system, playing central roles in the safe ship navigation and transport. While ECDIS software maintenance is regulated by the International Maritime Organization (IMO) ECDIS performance standards and related circulars, underlying software and hardware arrangements are implemented by ship-owners and supported by ECDIS equipment manufacturers. In this paper, we estimate ECDIS cyber security in order to study the origin of ECDIS cyber security risks. A set of ECDIS systems is examined using an industry-leading vulnerability scanning software tool, and cyber threats regarding the ECDIS backup arrangement, underlying operating system and third party applications are studied

Evidence for genetic contribution to the increased risk of type 2 diabetes in schizophrenia

The epidemiologic link between schizophrenia (SCZ) and type 2 diabetes (T2D) remains poorly understood. Here, we investigate the presence and extent of a shared genetic background between SCZ and T2D using genome-wide approaches. We performed a genome-wide association study (GWAS) and polygenic risk score analysis in a Greek sample collection (GOMAP) comprising three patient groups: SCZ only (n = 924), T2D only (n = 822), comorbid SCZ and T2D (n = 505); samples from two separate Greek cohorts were used as population-based controls (n = 1,125). We used genome-wide summary statistics from two large-scale GWAS of SCZ and T2D from the PGC and DIAGRAM consortia, respectively, to perform genetic overlap analyses, including a regional colocalisation test. We show for the first time that patients with comorbid SCZ and T2D have a higher genetic predisposition to both disorders compared to controls. We identify five genomic regions with evidence of colocalising SCZ and T2D signals, three of which contain known loci for both diseases. We also observe a significant excess of shared association signals between SCZ and T2D at nine out of ten investigated p value thresholds. Finally, we identify 29 genes associated with both T2D and SCZ, several of which have been implicated in biological processes relevant to these disorders. Together our results demonstrate that the observed comorbidity between SCZ and T2D is at least in part due to shared genetic mechanisms. © 2018, The Author(s)

Environmental effects and seismogenic source characterization of the December 2020 earthquake sequence near Petrinja, Croatia

International audienceSummary On 29 December 2020, a shallow earthquake of magnitude Mw 6.4 struck northern Croatia, near the town of Petrinja, more than 24 hours after a strong foreshock (Ml 5). We formed a reconnaissance team of European geologists and engineers, from Croatia, Slovenia, France, Italy and Greece, rapidly deployed in the field to map the evidence of coseismic environmental effects. In the epicentral area, we recognized surface deformation, such as tectonic breaks along the earthquake source at the surface, liquefaction features (scattered in the fluvial plains of Kupa, Glina and Sava rivers), and slope failures, both caused by strong motion. Thanks to this concerted, collective and meticulous work, we were able to document and map a clear and unambiguous coseismic surface rupture associated with the main shock. The surface rupture appears discontinuous, consisting of multi-kilometer en échelon right stepping sections, along a NW-SE striking fault that we call the Petrinja-Pokupsko Fault (PPKF). The observed deformation features, in terms of kinematics and trace alignments, are consistent with slip on a right lateral fault, in agreement with the focal solution of the main shock. We found mole tracks, displacement on faults affecting natural features (e. g. drainage channels), scarplets, and more frequently breaks of anthropogenic markers (roads, fences). The surface rupture is observed over a length of ∼13 km from end-to-end, with a maximum displacement of 38 cm, and an average displacement of ∼10 cm. Moreover, the liquefaction extends over an area of nearly 600 km² around the epicenter. Typology of liquefaction features include sand blows, lateral spreading phenomenon along the road and river embankments, as well as sand ejecta of different grain size and matrix. Development of large and long fissures along the fluvial landforms, current or ancient, with massive ejections of sediments is pervasive. These features are sometimes accompanied by small horizontal displacements. Finally, the environmental effects of the earthquake appear to be reasonably consistent with the usual scaling relationships, in particular the surface faulting. This rupture of the ground occurred on or near traces of a fault that shows clear evidence of Quaternary activity. Further and detailed studies will be carried out to characterize this source and related faults in terms of future large earthquakes potential, for their integration into seismic hazard models