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41.
Wojciech Stęplewski Tomasz Serzysko Grażyna Kozioł Andrzej Dziedzic 《Microelectronics Reliability》2012,52(8):1719-1725
Embedding passive components into multilayer printed wiring boards (PWBs) meet electronic device requirements concerning the necessity of saving the surface board area for active elements, reducing board’s size, improving device functionality and safety as well as overall product cost reduction. Since embedded components cannot be replaced after the board is completed, a long term stability and reliability are the important concerns for manufactures.This paper presents the results of examinations of embedded thin-film NiP resistors and polymer thick-film resistors during their continuous operation and the influence of temperature on the resistance values after the simulation of a lead-free soldering process and after the temperature cycling test (?40 ?C/+85 ?C). 相似文献
42.
J.M.M. Rovers M. Stöck J.W. Jansen C.M.M. van Lierop E.A. Lomonova Y. Perriard 《Mechatronics》2013,23(2):240-246
A transient thermal model used to monitor the temperature distribution in real-time in a long-stroke moving-magnet planar actuator is presented. The temperature distribution in the stator coils of the planar actuator depends on the trajectory of the levitated magnet plate as the set of active coils changes with the position of the translator. Using the presented real-time model, the transient thermal behavior can be investigated. Using this thermal model, the commutation algorithm of the planar actuator is adjusted to actively limit the temperature of the coils, and better spread the temperature over the stator coils. 相似文献
43.
St Rehbein W. Haupt R. Schm?schke und H. Rosigkeit 《Zeitschrift für Jagdwissenschaft》1993,39(1):1-14
Zusammenfassung An 24 natürlich infizierten Damhirschen (Alter 9–15 Monate) wurde die anthelminthische Wirksamkeit von dermal appliziertem
Ivermectin (0,5 mg/kg KM) gegenüber Magen-Darm-Nematoden und Lungenwürmern geprüft. Die Tiere der Gruppe I (n=8) wurden 4mal
im Abstand von jeweils 6 Wochen, die der Gruppe II (n=8) 2mal im Abstand von jeweils 12 Wochen behandelt. 8 Tiere (Gruppe
III) blieben unbehandelt. Zu den Behandlungsterminen sind alle Tiere gefangen, gewogen und koprologisch untersucht sowie 9
Wochen nach der letzten Behandung der Gruppe I get?tet und gewogen worden. Die Magen-Darm-Kan?le und die Lungen wurden vollst?ndig
parasitologisch untersucht. Durch die dermale Verabreichung von Ivermectin im Abstand von 6 Wochen (Gruppe I) lie? sich die
Ausscheidung vonDictyocaulus-Larven und Haarwurm-Eiern im gesamten Untersuchungszeitraum vollst?ndig unterdrücken. Bei Ausdehnung des Dosierungsintervalls
auf 12 Wochen (Gruppe II) konnten bei einigen TierenCapillaria-Eier, nicht jedoch Lungenwurm-Larven, im Kot nachgewiesen werden (Tabelle 2). Eine Beurteilung der Wirksamkeit von Ivermectin
gegenüber Magen-Darm-Strongylida anhand des koprologischen Befundes war aufgrund einer zu geringen Eiausscheidung nicht m?glich.
Die nach der T?tung der Tiere ermittelten Befallsintensit?ten des Magen-Darm-Kanals und der Lunge mit Helminthen (Tabelle
3) ergaben keine signifikanten Unterschiede zwischen den Spie?ern der behandelten Gruppen I und II sowie der unbehandelten
Gruppe III. Die Ergebnisse der parasitologischen Teilsektion und der Kontrollw?gungen zeigen, da? ein geringgradiger Befall
mit Helminthen keinen me?baren Einflu? auf K?rpermasseentwicklung, Schlachtk?rperwarmmasse sowie Schlachtausbeute der Tiere
hat (Tabelle 4).
Das Erscheinen der Abhandlung in dem vorliegenden Umfang war durch Einsatz eines Druckkostenzuschusses des Deutschen Jagdschutz-Verbandes m?glich, für dessen Gew?hrung verbindlich gedankt wird. — Die Schriftleitung 相似文献
Investigation on the efficacy of IVOMEC? pour-on against lungworms and gastrointestinal nematodes in enclosed fallow deer and influence of regular anthelmintic treatment on performance
Summary A trial was conducted to determine the anthelminthic efficacy of topically administered ivermectin at 0,5 mg/kg b.w. in 24 male fallow deer (9 to 15 months old) against gastrointestinal nematodes and lungworms. Eight deer (Group I) received the topical treatment 4 times at six week intervals and 8 deer (Group II) 2 times at twelve week intervals. Group III (8 deer) was the control group. On the treatment days all deer were weighed, faecal samples were collected per rectum and examined. Nine weeks after the last treatment of Gr. I all animals were killed and weighed. Gastrointestinal tracts and lungs were removed and total worm counts were carried out. At treatment intervals of 6 weeks (Gr. I) faecal counts forDictyocaulus larvae and eggs ofCapillaria were undetectable. At dosing intervals of 12 weeks few animals showed an egg output ofCapillaria bovis but larvae of lungworms were not observed in their faeces (Tab. 2). The small egg output of gastrointestinal Strongylida in this trial prevented true estimates of the efficacy of ivermectin. Nine weeks after the last treatment the total worm counts of the gastrointestinal tracts and lungs showed no significant differences between treated Groups I and II and untreated controls (Tab. 3). The results of the parasitological examination at slaughter and the weighing showed that a light worm burden has no measurable effects on body carcass weights (Tab. 4).
De l'efficacité de l'IVOMEC? — Pour-On contre les vers pulmonaires et les vers gastro-intestinaux chez le Daim en enclos
Résumé Sur 24 daims males agés de 9 à 15 mois, naturellement infectés, on a testé l'efficacité anthelminthique de l'lvermectine (0,5 mg/kg de MC) contre les nématodes gastro-intestinaux et les vers pulmonaires. Les animaux du groupe 1 (n=8) furent traités à 4 reprises à 6 semaines d'intervalle, ceux du groupe II (n=8) à 2 reprises à 12 semaines d'intervalle. 8 animaux (Graphique III) ne furent pas traités. Au moment du traitement, tous les animaux ont été capturés, pesés et soumis à une analyse coprologique; 9 semaines après le dernier traitement du groupe I, ils furent tués et pesés. Les conduits gastrointestinaux ainsi que les poumons furent soumis à un examen parasitologique complet. L'administration par voie cutanée d'lvermectine de 6 en 6 semaines (Groupe I) permit un arrêt complet de l'expulsion de larves deDictyocaulus et d'œufs de strongles tout au long de la période expérimentale. En espa?ant les applications de 12 en 12 semaines (Groupe II), on put déceler, dans les fèces de quelques animaux, des œufs deCapillaria mais non des larves de vers pulmonaires (Tableau 2). Une appréciation de l'efficacité de l'lvermectine vis-à-vis des strongles gastro-intestinaux ne fut pas possible. Les degrés de contamination par des Helminthes ne donnèrent pas lieu à des différences significatives post mortem au niveau du conduit gastro-intestinal et des poumons (Tableau 3), tant parmi les daguets des groupes traités l et il que parmi les sujets non traités du Groupe III. Les résultats des examens parasitologiques ainsi que les pesées de contr?le montrent qu'une atteinte modérée par les Helminthes n'exerce pas une influence significative sur le développement de la masse corporelle, sur les mesures de carcasse de même que sur le rendement à l'abattage des animaux (Tableau 4).
Das Erscheinen der Abhandlung in dem vorliegenden Umfang war durch Einsatz eines Druckkostenzuschusses des Deutschen Jagdschutz-Verbandes m?glich, für dessen Gew?hrung verbindlich gedankt wird. — Die Schriftleitung 相似文献
44.
Ohne Zusammenfassung 相似文献
45.
Aaron P. Gerratt Hadrien O. Michaud Stéphanie P. Lacour 《Advanced functional materials》2015,25(15):2287-2295
This report demonstrates a wearable elastomer‐based electronic skin including resistive sensors for monitoring finger articulation and capacitive tactile pressure sensors that register distributed pressure along the entire length of the finger. Pressure sensitivity in the order of 0.001 to 0.01 kPa?1 for pressures from 5 to 405 kPa, which includes much of the range of human physiological sensing, is achieved by implementing soft, compressible silicone foam as the dielectric and stretchable thin‐metal films. Integrating these sensors in a textile glove allows the decoupling of the strain and pressure cross‐sensitivity of the tactile sensors, enabling precise grasp analysis. The sensorized glove is implemented in a human‐in‐the‐loop system for controlling the grasp of objects, a critical step toward hand prosthesis with integrated sensing capabilities. 相似文献
46.
Vehicle detection by means of stereo vision-based obstacles features extraction and monocular pattern analysis. 总被引:2,自引:0,他引:2
Gwena?lle Toulminet Massimo Bertozzi Stéphane Mousset Abdelaziz Bensrhair Alberto Broggi 《IEEE transactions on image processing》2006,15(8):2364-2375
This paper presents a stereo vision system for the detection and distance computation of a preceding vehicle. It is divided in two major steps. Initially, a stereo vision-based algorithm is used to extract relevant three-dimensional (3-D) features in the scene, these features are investigated further in order to select the ones that belong to vertical objects only and not to the road or background. These 3-D vertical features are then used as a starting point for preceding vehicle detection; by using a symmetry operator, a match against a simplified model of a rear vehicle's shape is performed using a monocular vision-based approach that allows the identification of a preceding vehicle. In addition, using the 3-D information previously extracted, an accurate distance computation is performed. 相似文献
47.
Meste O Khaddoumi B Blain G Bermon S 《IEEE transactions on bio-medical engineering》2005,52(11):1921-1930
The analysis of heart period series is a difficult task especially under graded exercise conditions. From all the information present in these series, we are the most interested in the coupling between respiratory and cardiac systems, known as respiratory sinus arrythmia. In this paper, we show that precise patterns concerning the respiratory frequency can be extracted from the heart period series. An evolutive model is introduced in order to achieve tracking of the main respiratory-related frequencies and their time-varying amplitudes. Since respiration acts to modulate the sinus rhythm, we relate the frequencies and amplitudes to this modulation by analyzing in detail its nonlinear transformation giving the heart period signal. This analysis is performed assuming stationary conditions but also in the realistic case where the mean heart period, the amplitude, and the frequency of the respiration are time-varying. Since this paper is devoted to the theoretical and complete presentation of the method used in a physiological study published elsewhere, the capabilities of our method will be illustrated in a realistic simulated case. 相似文献
48.
Photoluminescence: Design and Integration in Electro‐Optic Devices of Highly Efficient and Robust Red‐NIR Phosphorescent Nematic Hybrid Liquid Crystals Containing [Mo6I8(OCOCnF2n+1)6]2− (n = 1, 2, 3) Nanoclusters (Adv. Funct. Mater. 31/2015) 下载免费PDF全文
49.
Karine Altisen Stéphane Devismes Raphaël Jamet Pascal Lafourcade 《Wireless Networks》2017,23(7):2111-2133
In this paper, we propose SR3 (which means secure resilient reputation-based routing), a secure and resilient algorithm for convergecast routing in wireless sensor networks. SR3 uses lightweight cryptographic primitives to achieve data confidentiality and unforgeability. Security of SR3 has been proven formally using two verification tools: CryptoVerif and Scyther. We made simulations to show the resiliency of SR3 against various scenarios, where we mixed selective forwarding, blackhole, wormhole, and Sybil attacks. We compared our solution to several routing algorithms of the literature. Our results show that the resiliency accomplished by SR3 is drastically better than the one achieved by those protocols, especially when the network is sparse. Moreover, unlike previous solutions, SR3 self-adapts after compromised nodes suddenly change their behavior. 相似文献
50.
Jean-Yves Tigli Stéphane Lavirotte Ga?tan Rey Vincent Hourdin Nicolas Ferry Christophe Vergoni Michel Riveill 《电信纪事》2012,67(7-8):313-327
Ubiquitous computing applications or widespread robots interactions execute in unforeseen environments and need to adapt to changeful available services, user needs, and variations of the environment. Context-awareness ability addresses such a need, enabling, through adaptation rules, applications to react to the perceived dynamic variations. Responses to adaptation have to be quick enough to maximize the time during which the application is coherent with its environment. Adaptation rules, associating variations of the environment to application reactions, are usually established at design time. However, in unforeseen and partially anticipated environments, we claim that adaptation rules have to be dynamically extensible to match previously unexpected variations. Our approach enables rule composition and ensures a deterministic result. We propose to use parameter adaptation to quickly respond to environmental variations and dynamic compositional adaptation to provide extensibility to the parameter adaptation. To foster even lower response times, we internalize context-awareness processing and decision into the application. 相似文献