4,533 research outputs found
Recommended from our members
Mechanisms for the maintenance and eventual degradation of neurofilament proteins in the distal segments of severed goldfish Mauthner axons
No full textCellular mechanisms that might affect the degradation of neurofilament proteins (NFPs) were examined in the distal segments
of severed goldfish Mauthner axons (M-axons), which do
not degenerate for more than 2 months after severance. Calpain
levels, as determined by reactivity to a polyclonal antibody,
remained constant for 80 d postseverance in distal segments
of M-axons and then declined from 80 to 85 d
postseverance. Calpain activity in rat brain, as determined by a
spectrophotometric assay, was much higher than calpain activity
in control and severed goldfish brain, spinal cord, muscle,
or M-axons. Calpain activity was extremely low in M-axons
compared with that in all other tissues and remained low for up
to 80 d postseverance in distal segments of M-axons. Phosphorylated
NFPs, as determined by Stains-All treatment of SDS
gels, were maintained for up to 72 d postseverance and then decreased noticeably at 75 d postseverance when NFP breakdown
products appeared on silver-stained gels. By 85 d postseverance,
phosphorylated NFPs no longer were detected, and
NFP breakdown products were the most prominent bands on
silver-stained gels. These results suggest that the distal segments
of M-axons survive for months after severance, because
NFPs are maintained in a phosphorylated state that stabilizes
and protects NFPs from degradation by low levels of calpain
activity in the M-axon; the distal segments of severed M-axons
degenerate eventually when NFPs no longer are maintained in
a phosphorylated state and become susceptible to degradation,
possibly by low levels of calpain activity in the M-axon.This work was supported by an Advanced Technology Project Grant to G.D.B.Neuroscienc
Strategien für die Produktion
No full textDie hier vorgestellte Untersuchung zeigt, welche hohe Priorität das Thema "Standortsicherung" für Politik, Forschung, Gewerkschaften, Verbände und vor allem für die Unternehmen hat. In kurzer Zeit entstand eine umfassende Liste von Perspektiven, Pflichten und Chancen für alle an der Standortsicherung beteiligten Kräfte. Dabei beließen es die Mitarbeiter der Untersuchung nicht bei der Formulierung relevanter Themen. Konkretes Handeln war gefragt. Folgerichtig ging die Untersuchung nahtlos in industrienahe Forschungs- und Umsetzungsprojekte über, die in Teil 3 skizzierten "Prioritären Ersten Maßnahmen". Die Sonderstellung der Studie zu "Strategien für die Produktion im 21. Jahrhundert" wird zusätzlich untermauert durch den interdisziplinären Charakter. Ingenieure, Ökonomen, Sozialwissenschaftler mit unterschiedlichsten Erfahrungshintergründen arbeiteten intensiv zusammen und erzielten - dieses Buch ist der Beweis - greifbare Ergebnisse. Zudem: Die Untersuchung war keine Theoriedebatte un ter Forschern. Zahlreiche Industrievertreter in den Arbeitskreisen sorgten dafür, daß die Erfordernisse der unternehmerischen Praxis gebührende Berücksichtigung fanden. Alle Experten sind sich in einer Erkenntnis einig: die Suche nach zukunftsträchtigen Strategien für die Produktion muß unverzüglich begonnen und mit aller Kraft betrieben werden. Die Vernachlässigung oder Verzögerung notwendiger Maßnahmen kann fatale, weitreichende Folgen haben - für alle am Standort Deutschland lebenden Menschen
The Role of Texture and Elastic-Plastic Anisotropy in Metal Forming Simulations
No full textMetals mostly occur in polycrystalline form where each grain has a different crystallographic orientation, shape, and volume fraction. The distribution of the grain orientations is referred to as crystallographic texture. The discrete nature of crystallographic slip along certain lattice directions on preferred crystallographic planes entails an anisotropic plastic response of such samples under mechanical loads. While the elastic-plastic deformation of single crystals and bicrystals can nowadays be well predicted, plasticity of polycrystalline matter is less well understood. This is essentially due to the intricate interaction of the grains during co-deformation. This interaction leads to strong in-grain and grainto- grain heterogeneity in terms of strain, stress, and crystal orientation. Modern metal forming and crash simulations are usually based on the finite element method. Aims of such simulations are typically the prediction of the material shape, failure, and mechanical properties during deformation. Further goals lie in the computer assisted lay-out of manufacturing tools used for intricate processing steps. Any such simulation requires that the material under investigation is specified in terms of its respective constitutive behavior. Modern finite element simulations typically use three sets of material input data, covering hardening, forming limits, and anisotropy. The current research report issued by the Max-Planck-Institut für Eisenforschung is about the latter aspect placing particular attention on the physical nature of anisotropy. The report reviews different empirical and physically based concepts for the integration of the elastic-plastic anisotropy into metal forming finite Raabe, Texture and Anisotropy in Metal Forming Simulations Raabe, edoc Server, Max-Planck-Society - 3 - MPI Düsseldorf element simulations. Particular pronunciation is placed on the discussion of the crystallographic anisotropy of polycrystalline material rather than on aspects associated with topological or morphological microstructure anisotropy. The reviewed anisotropy concepts are empirical yield surface approximations, yield surface formulations based on crystallographic homogenization theory, combinations of finite element and homogenization approaches, the crystal plasticity finite element method, and the recently introduced texture component crystal plasticity finite element method. The report presents the basic physical approaches behind the different methods and discusses engineering aspects such as scalability, flexibility, and texture update in the course of a forming simulation. Published overviews on this topic can be found in Raabe, Klose, Engl, Imlau, F. Friedel, Roters: Advanced Engineering Materials 4 (2002) 169-180, Raabe, Zhao, Mao: Acta Materialia 50 (2002) 4379–4394, and Raabe, Roters: International Journal of Plasticity 20 (2004) p. 339-36
Raabe, Peter
No full textcurrentI was born in 1949 in Montabauer, Germany and have lived in Canada since 1957. I won numerous public speaking awards in both elementary and high school. The high point of my varied working life was the International Investigative Journalism Award I won during the five years I spent working as an interviewer in professional radio broadcasting. It was during this time that I realized I had a passion for researching, learning, counselling, and teaching. Areas of expertise include mental health; psychotherapy and counselling.
I have a private practice in philosophical counselling in which philosophical discussion is used to help individuals deal with life problems and issues. My work is featured in an article in the Spring 2011 edition of UFV's Skookum magazine, titled Not-So-Crazy' Talk.
The Korean National Academy of Sciences (NAS) has selected the Korean translation of my book Philosophical Counseling: Theory and Practice as one of the outstanding books of 2011. The NAS allocated 15,000,000 won (approx. $15,000 CDN) to purchase this book and distribute it to Korean universities, public libraries, and research centers.
Education
PhD, University of British Columbia, 1999
MA, University of British Columbia, 1995
BA (Hons), University of British Columbia, 1994
Teaching Interests
Critical Thinking/Reasoning (PHIL 100)
Ethics (PHIL 110)
Metaphysics and Epistemology (PHIL 120)
Philosophy of Mind (PHIL 322)
Philosophy for Counselors (PHIL 367)
My Books
Women in Philosophical Counseling. Northvale, NJ.: Lexington. (2015).
Philosophy’s Role in Counseling and Psychotherapy. Northvale, NJ.: Jason Aronson. 2013. Also in Korean Trans.
Philosophical Counseling and the Unconscious. Amherst, NY: Trivium Publications, 2006.
Issues in Philosophical Counseling. Westport, CT: Greenwood Publishing (Praeger),2002.
Philosophical Counseling: Theory and Practice. Westport, CT: Greenwood Publishing (Praeger), 2001. Also in Korean, Italian, Complex Chinese, and Japanese trans.
My Book Chapters
"Philosophy Revalued in Mental Healthcare." In Practicing Philosophy. Aleksandar Fatic and Lydia Amir eds. Cambridge: Cambridge Scholars Publications, 2015.
"Happiness Pills: Philosophy Versus the Chemical Solution." In Philosophy, Counseling, and Psychotherapy. Elliot D. Cohen and Samuel Zinaich eds. Newcastle upon Tyne: Cambridge Scholars Publishing, 2013.
Additional Links
Philosophy's Role in Counseling and Psychotherapy
Change Your Mind, Change Your Brain?
Women in Philosophical CounselingAbbotsford campus, D308
Atom probe tomography observation of hydrogen in high-Mn steel and silver charged via an electrolytic route
No full textWe investigate an electrolytic route for hydrogen charging of metals and its detection in Atom Probe Tomography (APT) experiments. We charge an austenitic Fe-30Mn-8Al-1.2C (wt.%) weight reduced high-Mn steel and subsequently demonstrate the detectability of deuterium in an APT experiment. The experiment is repeated with a deposited Ag film upon an APT tip of a high-Mn steel. It is shown that a detectable deuterium signal can be seen in the high-Mn steel, and a D:H ratio of 0.84 can be reached in Ag films. Additionally, it was found that the predicted time constraint on detectability of D in APT was found to be lower than predicted by bulk diffusion for the high-Mn steel. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved
Wilhelm Raabes "Horacker": Versuch einer literaturdidaktischen Analyse mit Blick auf der Raabe-Rezeption
No full textWilhelm Raabes "Horacker" : Versuch e. literaturdidakt. Analyse mit Blick auf d. Raabe-Rezeption. - In: Literaturdidaktische Analysen / hrsg. von Albrecht Weber ... - Freiburg : Herder, 1980. - S. 136-172. - (Herderbücherei ; 9081
Geognostische Specialkarte der Grafschaft Schaumburg
No full textin die im Jahre 1854, unter der Leitung des Oberst Wiegrebe, ausgeführte topographische Originalaufnahme geognostisch eingetragen unter der Direction des Professor D. W. Dunker von A. Franke und H. Raabe, mit Angabe des Flächenraumes, welchen die Formationsglieder einnehmen, berechnet von Dr. Fr. MoestaAm oberen Kartenrand: Nenndorf No. 3
Der realistische Weg: Formen pragmatischen Erzählens bei Balzac, Dickens, Hardy, Keller, Raabe und anderen Autoren des 19. Jahrhunderts
No full textDer realistische Weg : Formen pragmat. Erzählens bei Balzac, Dickens, Hardy, Keller, Raabe u.a. Autoren d. 19. Jh. - Tübingen : Niemeyer, 1994. - XI, 712 S. - (Communicatio ; 5
Savages and demonic pacts : observations on a narrative by Wilhelm Raabe
No full textA narrativa "Zum wilden Mann" (1874) de Wilhelm Raabe apresenta a história de uma farmácia na província alemã e do seu dono, observando os princípios estilísticos do realismo poético, a tendência literária dominante na segunda metade do século 19 nos países de língua alemã. A despeito da localização no mundo contemporâneo de Raabe e seus leitores, a trama e os protagonistas apresentam traços que remetem à esfera fantástica de pactos demoníacos e homens selvagens. Esses elementos interferem com a esfera realista das relações econômicas entre os protagonistas, baseadas- em empréstimos, juros e o comércio globalizado, e aludem aos aspectos inumanos dos negócios modernos. Divergente da prática cultural geral, Raabe atribui o "selvagem" e o "diabólico" às "conquistas" recentes da civilização que emergem de forma similar na Alemanha e nas antigas colônias. O Brasil traçado pela narrativa, em vez de ser um ambiente exótico, é apenas um outro cenário dos processos industriais e comerciais.The narrative "Zum wilden Mann" (1874) by Wilhelm Raabe presents the story of a pharmacy in provincial Germany and its owner; Raabe's story obeys the stylistic principles of Poetic Realism, the literary current that dominated the second half of the 19th century in German speaking countries. Despite being located in contemporary reality of the author and his readers, the plot and its main characters show features that refer to the fantastic realm of demonic pacts and wild men. These elements interfere with the realist economic relations between the protagonists, based on loans, interests, and globalized commerce and allude to the inhuman aspects of modern business. Divergent from main cultural practice, Raabe attributes the "savage" and the "diabolic" to the recent "achievements" of civilization which emerge likewise in Germany and in former colonies. The Brazil described by the narrative, instead of being an exotic setting, is just another stage of industrial and commercial processes
Studying the effect of grain boundaries in dislocation density based crystal plasticity finite element simulations
No full textAbstractA dislocation density based constitutive model for the face centered cubic crystal structure has been implemented into a crystal-plasticity finite element framework and extended to consider the mechanical interaction between mobile dislocations and grain boundaries by the authors [Ma, A., Roters, F., Raabe, D., 2006a. A dislocation density based constitutive model for crystal-plasticity FEM including geometrically necessary dislocations. Acta Materialia 54, 2169–2179; Ma, A., Roters, F., Raabe, D., 2006b. On the consideration of interactions between dislocations and grain boundaries in crystal-plasticity finite element modeling – theory, experiments, and simulations. Acta Materialia 54, 2181–2194]. The approach to model the grain boundary resistance against slip is based on the introduction of an additional activation energy into the rate equation for mobile dislocations in the vicinity of internal interfaces. This energy barrier is derived from the assumption of thermally activated dislocation penetration events through grain boundaries. The model takes full account of the geometry of the grain boundaries and of the Schmid factors of the critically stressed incoming and outgoing slip systems. In this study we focus on the influence of the one remaining model parameter which can be used to scale the obstacle strength of the grain boundary
- …
