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81.
A classical constitutive modeling-based Ansatz for the impact of thermal activation on the stress–strain response of metallic materials is compared with the state parameter-based Kocks–Mecking model. The predicted functional dependencies suggest that, in the first approach, only the dislocation storage mechanism is a thermally activated process, whereas, in the second approach, only the mechanism of dynamic recovery is. In contradiction to each of these individual approaches, our analysis and comparison with experimental evidence shows that thermal activation contributes both to dislocation generation and annihilation. 相似文献
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85.
ZUSAMMENFASSUNG: Anders als die weitgehend in der Geschichtsschreibung belegte psychiatrische Anstalt für Europ?er und Europ?erinnen mit ihrem englischen Leiter Owen Berkeley-Hill ist die weitaus gr??ere Institution für indische Patienten und Patientinnen im nordindischen Ranchi bisher nicht untersucht worden. Im Mittelpunkt dieses Beitrags steht die Karriere des Leiters dieser Institution, Jal E. Dhunjibhoy, zu Beginn des 20. Jahrhunderts als von der britischen Kolonialregierung eine Indianisierung der medizinischen Einrichtungen angestrebt wurde. Im Gegensatz zu bisherigen Studien über intermediaries und middles konzentriert sich dieser Aufsatz auf einen hochrangigen einheimischen Mitarbeiter. Die verbreitete Annahme zwangsl?ufiger historischer Prozesse wird dabei differenziert, eine regionale Kontextualisierung vorgenommen und die Kontinuit?t offener und versteckter Diskriminierung indischer Mediziner in Bezug auf Entlohnung, gesellschaftliche Stellung, fachliche Anerkennung, posthume Würdigung und historiographischer Berücksichtigung herausgearbeitet. Es wird verdeutlicht, in welcher Weise koloniale Akteure in bestehende gesellschaftliche Disparit?ten und soziopolitische Prozessen verstrickt waren und wie die Karriere eines leitenden Mediziners von einer Vielzahl von au?ermedizinischen Zusammenh?ngen bestimmt wurde. Gleichzeitig wird hervorgehoben, dass ihre strukturelle Positionierung als inbetweens, Kollaborateure oder Repr?sentanten einer erfolgreichen Dekolonisierung für ein nuancierteres Verst?ndnis ihrer beruflichen und pers?nlichen Identit?tsformierung nicht ausreicht. 相似文献
86.
We solve systems of boolean implicit equations and relations with union and complementation. If the languages are regular, we determine whether a system of implicit boolean equations or relations has solutions. If there is a solution, we provide an effective construction of a (regular) solution. We give representations for maximal and minimal solutions. Moreover, we also solve the problem of uniqueness of solutions as well as whether infinitely many solutions exist. 相似文献
87.
Irene R. Grant Antonio C.G. Foddai James C. Tarrant Brenna Kunkel Faye A. Hartmann Sheila McGuirk Chungyi Hansen Adel M. Talaat Michael T. Collins 《Journal of dairy science》2017,100(12):9723-9735
When advising farmers on how to control Johne's disease in an infected herd, one of the main recommendations is to avoid feeding waste milk to calves and instead feed calf milk replacer (CMR). This advice is based on the assumption that CMR is free of viable Mycobacterium avium ssp. paratuberculosis (MAP) cells, an assumption that has not previously been challenged. We tested commercial CMR products (n = 83) obtained from dairy farms around the United States by the peptide-mediated magnetic separation (PMS)-phage assay, PMS followed by liquid culture (PMS-culture), and direct IS900 quantitative PCR (qPCR). Conventional microbiological analyses for total mesophilic bacterial counts, coliforms, Salmonella, coagulase-negative staphylococci, streptococci, nonhemolytic Corynebacterium spp., and Bacillus spp. were also performed to assess the overall microbiological quality of the CMR. Twenty-six (31.3%) of the 83 CMR samples showed evidence of the presence of MAP. Seventeen (20.5%) tested positive for viable MAP by the PMS-phage assay, with plaque counts ranging from 6 to 1,212 pfu/50 mL of reconstituted CMR (average 248.5 pfu/50 mL). Twelve (14.5%) CMR samples tested positive for viable MAP by PMS-culture; isolates from all 12 of these samples were subsequently confirmed by whole-genome sequencing to be different cattle strains of MAP. Seven (8.4%) CMR samples tested positive for MAP DNA by IS900 qPCR. Four CMR samples tested positive by both PMS-based tests and 5 CMR samples tested positive by IS900 qPCR plus one or other of the PMS-based tests, but only one CMR sample tested positive by all 3 MAP detection tests applied. All conventional microbiology results were within current standards for whole milk powders. A significant association existed between higher total bacterial counts and presence of viable MAP indicated by either of the PMS-based assays. This represents the first published report of the isolation of viable MAP from CMR. Our findings raise concerns about the potential ability of MAP to survive manufacture of dried milk-based products. 相似文献
88.
Usually visualization is applied to gain insight into data. Yet consuming the data in form of visual representation is not always enough. Instead, users need to edit the data, preferably through the same means used to visualize them. In this work, we present a semi‐automatic approach to visual editing of graphs. The key idea is to use an interactive EditLens that defines where an edit operation affects an already customized and established graph layout. Locally optimal node positions within the lens and edge routes to connected nodes are calculated according to different criteria. This spares the user much manual work, but still provides sufficient freedom to accommodate application‐dependent layout constraints. Our approach utilizes the advantages of multi‐touch gestures, and is also compatible with classic mouse and keyboard interaction. Preliminary user tests have been conducted with researchers from bio‐informatics who need to manually maintain a slowly, but constantly growing molecular network. As the user feedback indicates, our solution significantly improves the editing procedure applied so far. 相似文献
89.
Lisa Meier-Dinkel Johanna Trautmann Luc Frieden Ernst Tholen Christoph Knorr Ahmad Reza Sharifi Mark Bücking Michael Wicke Daniel Mörlein 《Meat science》2013
This study aimed to assess the influence of two label conditions on the acceptance of boar meat. A central location test was conducted with 145 consumers each assessing 4 pieces of pork loin. 相似文献
90.
In-situ full-field measurements became one of the drivers for process understanding, model creation, validation and inverse analysis. Therefore, a novel spatio-temporal optical flow method for the robust measurement of higher-order strain derivatives is proposed. This computer vision approach overcomes inherent restrictions of established DIC methods. For advanced process analysis of shear cutting processes, the deformation curvature (2nd-order displacement derivative) and the respective rate (3rd-order displacement derivative) are of high interest. For the first time, it is possible to quantify experimentally these higher-order derivatives in sufficient quality with the proposed spatio-temporal optical flow approach. In addition, interesting correlations between the microstructure of the material and macroscopic process results are determined. This demonstrates the potential of the novel in-situ measurement approach for the advanced process analysis of metal forming processes in general. 相似文献