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The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic messengers (photons, neutrinos, cosmic rays and gravitational waves) from numerous origins. They give us information about their sources in the universe and the properties of the intergalactic medium. Moreover, multi-messenger astronomy opens up the possibility to search for phenomenological signatures of quantum gravity. On the one hand, the most energetic events allow us to test our physical theories at energy regimes which are not directly accessible in accelerators; on the other hand, tiny effects in the propagation of very high energy particles could be amplified by cosmological distances. After decades of merely theoretical investigations, the possibility of obtaining phenomenological indications of Planck-scale effects is a revolutionary step in the quest for a quantum theory of gravity, but it requires cooperation between different communities of physicists (both theoretical and experimental). This review, prepared within the COST Action CA18108 “Quantum gravity phenomenology in the multi-messenger approach”, is aimed at promoting this cooperation by giving a state-of-the art account of the interdisciplinary expertise that is needed in the effective search of quantum gravity footprints in the production, propagation and detection of cosmic messengers. © 2022 The Authors

The spatial level of a landscape is highly relevant for assessing and implementing circularity in food and agricultural systems (FAS). Contrary to focussing on the field or farm level, analyses on the landscape level allow relevant ecosystem dynamics as well as landscape wide feed and manure flows to be captured. At the same time, and opposed to the national and global level, a focus on landscapes allows to acknowledge local dissimilarities. Even though various reviews approach the topic of assessing agricultural landscapes, there is no systematic overview on how they take aspects of circular FAS into account.

Fragestellung: Die aktuelle Studie analysiert aktuell im klinischen Alltag verwendete Rehabilitationsprotokolle, um die Frage zu klären, ob derzeit ein Standard in der frühen Rehabilitationsphase nach Mikrofrakturierung, ACT und OCT des Kniegelenks etabliert ist und ob sich das Rehabilitationsprogramm [zum vollständigen Text gelangen Sie über die oben angegebene URL]

Fragestellung: Welche klinischen und strukturellen Langzeit-Ergebnisse liefert die neuartige, arthroskopische, implantatlose Tenodesetechnik (Loop-Tenodese) zur Versorgung von Pathologien der langen Bizepssehne nach einem Follow-up von 2 Jahren? Methodik: 55 Patienten (w: 16; m: 39; ø53 [zum vollständigen Text gelangen Sie über die oben angegebene URL]

Fragestellung: Die Kontamination von Oberflächen stellt eine wichtige, lange Zeit unterschätzte Rolle in der Genese nosokomialer Infektionen dar. Neuartige Beschichtungen bergen Potential, über Veränderungen der Eigenschaften von Oberflächen, dem entgegenzuwirken. In der [zum vollständigen Text gelangen Sie über die oben angegebene URL]

Fragestellung: Obwohl es sich bei nur 0,5% aller Läsionen im Profifußball um vordere Kreuzbandrupturen (VKB-Rupturen) handelt, verursachen sie rund 15% aller Kosten und 19% der Krankheitstage der Berufsfußballer. Dennoch finden sich nur spärlich Informationen zu der [zum vollständigen Text gelangen Sie über die oben angegebene URL]

Fragestellung: Wirbelkörperfrakturen sind eine wichtige Ursache für Morbidität und Mortalität mit hoher sozio-ökonomischer Bedeutung. Die bisherigen Angaben über die Inzidenz der Wirbelsäulenfrakturen beruhen in der Regel auf Schätzungen oder multizentrischen [zum vollständigen Text gelangen Sie über die oben angegebene URL]

Recent studies have shown that in heterogeneous populations differential validities are often found in the population subgroups. In the light of the increasing societal emphasis on higher education, the valid prediction of academic success for all racial groups has become a necessity. This study is concerned with the differential validity for black and white students of academic predictors currently used at the University of Maryland. The University uses a Predictive Index Equation, which is a multiple regression equation involving high school grades, SAT-Verbal and SAT-Math scores. The Maryland grade-point average at the end of the freshman year is used as the criterion. In this study high school grades, SAT-V and SAT-M were examined separately as well as combined in multiple regression equations. The samples were categorized by race and sex. The results indicated that the Predictive Index worked as well for black students as it did for whites. For the sample studied, SAT scores were correlated with grades about as highly for whites as for blacks, although high school grades were not a valid predictor for black males. In addition to describing the study, the report examines other studies concerned with this topic. (AF)

The purpose of this study was to investigate nonintellectual variables (personality, attitude, etc.) that may be related to the academic performance of black students at the University of Maryland. Black and white samples were drawn from the 1968 freshmen class, and two personality measures were used: the California Psychological Inventory (CPI), consisting of 18 scales, and the Holland Vocational Preference Inventory (HVPI), consisting of 11 scales. Another variable examined was the University Student Census (USC), which is a questionnaire involving student opinion and certain personal information. Data was also obtained on high school extracurricular activities. The GPA at the end of the freshman year was used as the measure of academic success. Pearson correlations were made for each of the scales of the Inventories, point biserial correlation coefficients were computed for each of the extracurricular activities, and an eta coefficient was computed for the first 29 items of the USC; Pearson correlations for the last 17 items. The results indicated that significant relationships for the black students were the Social, Infrequency, and Masculinity scales of the HVPI as well as the Socialization, Communality and Achievement via Independence scales of the CPI. For the whites the Social, Artistic, Masculinity, and Status scales of the HVPI, and the Responsibility, Socialization, Self-Control, Tolerance and other scales were significant. (AF)

A hydrodynamic model of a dual fluidized bed gasifier (DFBG) is developed and its predictions are compared with measurements of solids flux and pressure profiles from a cold flow model (CFM). Then, the performance of a DFBG gasifier is theoretically analyzed in terms of solids circulation and solids distribution under changes in riser and loop seal aeration, solids inventory and particle size, and a sensitivity analysis is made to delimit the model prediction capability. Furthermore, the model is applied to analyze the effects of key design aspects of DFBG, such as the relative size of riser and gasifier, the connection between both units, the circulation rate of solids and their distribution around the system. The model is further used to extend the DFBG operation with external solar energy carried by heated solid particles, i.e. to design solar DFBG (SDFBG). The analysis is focused on the performance with high solids inventory in the gasifier to increase the char conversion (operation with a large solar share) and the control of solids circulation to meet the heat demand of the gasifier with the availability of solar energy. The operation with large solids inventory in the gasifier requires the size of the gasifier to increase considerably compared to that of the conventional DFBG. The substitution of the connection pipe between the riser and the bubbling bed (current design in commercial DFBG) by a lower loop seal enables better control of the solids circulation, thus, benefiting the solar design. Ministerio de Economía, Industria y Competitividad (España) BES-2017-080653 Ministerio de Ciencia, Innovación y Universidades(España) PRX18 / 00629 Spanish National Plan I + D + I CTM2016-78089-R