Studies of the microstructure of polymer-modified bitumen emulsions using confocal laser scanning microscopy

Polymer-modified bitumen emulsions present a safer and more environmentally friendly binder for enhancing the properties of roads. Cationic bitumen emulsion binders containing polymer latex were investigated using confocal laser scanning microscopy. The latex was incorporated into the bitumen emulsion by using four different addition methods and all emulsions were processed with a conventional colloid mill. The emulsion binder films were studied after evaporation of the emulsion aqueous phase. We show how the microstructure and distribution of the polymer varies within the bitumen binder depending on latex addition method, and that the microstructure of the binder remains intact when exposed to elevated temperature. It was found that a distinctly fine dispersion of polymer results when the polymer is blended into the bitumen before the emulsifying process (a monophase emulsion). In contrast, bi-phase emulsion binders produced by either post-adding the latex to the bitumen emulsion, or by adding the latex into the emulsifier solution phase before processing, or by comilling the latex with the bitumen, water and emulsifier all resulted in a network formation of bitumen particles surrounded by a continuous polymer film. The use of emulsified binders appears to result in a more evenly distributed polymer network compared to the use of hot polymer-modified binders, and they therefore have greater potential for consistent binder cohesion strength, stone retention and therefore improved pavement performance

Neurogenic Bladder Due to Hypoxic-Ischemic Demyelination

BACKGROUND AND PURPOSE Hypoxia is commonly known to target neuronal cell bodies. Although myelin is a non-infrequent target, posthypoxic demyelination is a rarely described entity. We describe the case of a man who developed neurogenic bladder following a motor vehicle accident. CASE REPORT Following a severe motor-vehicle accident involving massive blood loss, a 46-year-old man developed urinary urgency requiring catheterization, with hyperactive reflexes and bilateral Babinski signs on exam. RESULTS Magnetic resonance imaging of the brain and cervical cord revealed diffuse, isolated white matter signal abnormality in a symmetric, confluent distribution, extending inferiorly into the spinal cord, with changes consistent with bilateral Wallerian degeneration. Serologic and CSF evaluations were normal. CONCLUSIONS Unlike previous reports of hypoxic-ischemic demyelination, our patient lacked any cortical abnormalities, presumably due to isolated white matter changes. This report alerts physicians to the possibility of hypoxic-ischemic demyelination due to global hypoxia-ischemia as an etiologic factor for neurogenic bladder. J Neuroimaging 2008;18:198–201.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75670/1/j.1552-6569.2007.00167.x.pd

From Personal Memories to Sharable Memories

The exchange of personal experiences is a way of supporting decision making and interpersonal communication. In this article, we discuss how augmented personal memories could be exploited in order to support such a sharing. We start with a brief summary of a system implementing an augmented memory for a single user. Then, we exploit results from interviews to define an example scenario involving sharable memories. This scenario serves as background for a discussion of various questions related to sharing memories and potential approaches to their solution. We especially focus on the selection of relevant experiences and sharing partners, sharing methods, and the configuration of those sharing methods by means of reflection

Hans Jonas‘ philsophische Biologie und Friedrich W. J. Schellings Naturphilosophie. Einleitende Bemerkungen zu einer Affinität

[Extracted from Introduction] Was ich mit dieser Artikel hier zu zeigen versuchen werde, ist eine gewisse Affinität zwischen Friedrich Wilhelm Joseph Schellings Konzeptionen und Auffassungen einer Naturphilosophie in den Jahren 1797-1801 und Hans Jonas‘ ontologisch-philosophische Biologie (1973) 1, die er in Organismus und Freiheit – Ansätze zu einer philosophischen Biologie entwickelte (im Folgenden abgekürzt OF). Die hier zu erwähnende Schellingsche Naturphilosophie ist die in der Zeit zwischen Ideen zu einer Philosophie der Natur (im Folgenden abgekürzt Ideen) vom Jahr 1797 und Ueber den wahren Begriff der Naturphilosophie und die richtige Art ihre Probleme aufzulösen (im Folgenden abgekürzt UwB) vom Jahr 1801 entwickelte Konzeption einer Philosophie der Natur.2 Damit schließe ich mich einer These Odo Marquards an: Schelling sei der Philosophie des 20.Jahrhunderts ein Zeitgenosse inkognito (Marquard 1975). Nur wünsche ich der prominenten Reihe von Philosophen, die Marquard – zwei Jahre nach der Veröffentlichung von Organismus und Freiheit – im Jahr 1975 aufstellte, den Name ‚Hans Jonas‘ hinzufügen. Es soll somit versucht werden, die Möglichkeit dafür zu öffnen, dass die Naturphilosophie Schellings im Lichte der philosophischen Biologie Jonas‘ gesehen werden kann. Damit wünsche ich zu verdeutlichen, dass der Problembereich und frühen Philosophie Schellings durch Jonas‘ Philosophie einen Repräsentant finden, und dass sie mit der Problematik Jonas‘ eine gewisse Aktualität gewinnen könnte

Hans Jonas‘ philsophische Biologie und Friedrich W. J. Schellings Naturphilosophie. Einleitende Bemerkungen zu einer Affinität

[Extracted from Introduction] Was ich mit dieser Artikel hier zu zeigen versuchen werde, ist eine gewisse Affinität zwischen Friedrich Wilhelm Joseph Schellings Konzeptionen und Auffassungen einer Naturphilosophie in den Jahren 1797-1801 und Hans Jonas‘ ontologisch-philosophische Biologie (1973) 1, die er in Organismus und Freiheit – Ansätze zu einer philosophischen Biologie entwickelte (im Folgenden abgekürzt OF). Die hier zu erwähnende Schellingsche Naturphilosophie ist die in der Zeit zwischen Ideen zu einer Philosophie der Natur (im Folgenden abgekürzt Ideen) vom Jahr 1797 und Ueber den wahren Begriff der Naturphilosophie und die richtige Art ihre Probleme aufzulösen (im Folgenden abgekürzt UwB) vom Jahr 1801 entwickelte Konzeption einer Philosophie der Natur.2 Damit schließe ich mich einer These Odo Marquards an: Schelling sei der Philosophie des 20.Jahrhunderts ein Zeitgenosse inkognito (Marquard 1975). Nur wünsche ich der prominenten Reihe von Philosophen, die Marquard – zwei Jahre nach der Veröffentlichung von Organismus und Freiheit – im Jahr 1975 aufstellte, den Name ‚Hans Jonas‘ hinzufügen. Es soll somit versucht werden, die Möglichkeit dafür zu öffnen, dass die Naturphilosophie Schellings im Lichte der philosophischen Biologie Jonas‘ gesehen werden kann. Damit wünsche ich zu verdeutlichen, dass der Problembereich und frühen Philosophie Schellings durch Jonas‘ Philosophie einen Repräsentant finden, und dass sie mit der Problematik Jonas‘ eine gewisse Aktualität gewinnen könnte

The use of social networks in recruiting processes from a firms perspective

"Sociological as well as economic research is interested in the role of social net-works in staffing processes. Empirical studies usually consider them as relevant from the job seekers' point of view. But there is only little knowledge of firms' perspective on this issue. This paper contributes to decrease this research gap with results on base of representative data from the German Job Vacancy Survey for the years 2004 until 2008 with up to 9000 participating firms yearly. It is the goal of this paper, to characterize and structure firms that use social networks in staffing processes, using information not only about the firm itself, but also about the position that has been filled. The results show a tendency that networks help to reduce search costs and are especially useful in difficult economic situations. The positions filled via networks are more likely to be stable positions either in a very high labour market segment or in a very low one with rather difficult working conditions." (Author's abstract, IAB-Doku) ((en))Personalbeschaffung, soziales Netzwerk, offene Stellen, Hochqualifizierte, Niedrigqualifizierte

America\u27s De Facto Guest Workers: Lessons from Germany\u27s Gastarbeiter for U.S. Immigration Reform

Part I of this Note describes West Germany\u27s post-war Gastarbeiter [guest worker] program from 1961 to 1972. Part II focuses on the long-term results of the Gastarbeiter program, with special emphasis on the legal status of Turkish Gastarbeiter in Germany. This assessment concludes that guest worker programs inevitably result in the permanent settlement of foreigners in the host country. If not properly anticipated and planned for, this settlement leads to social stratification and political divisiveness. Part II also presents for comparison U.S. immigration policies and their effect on Mexican immigrant workers. The section asserts that the United States over the past two decades has implemented a de facto guest worker policy, which led to many of the same adverse consequences wrought by Germany\u27s Gastarbeiter program, including the permanent settlement and subsequent marginalization of undocumented immigrants from Mexico. Part III concludes that temporary worker programs, formal or de facto, have irreversible and adverse sociopolitical consequences for their participants and the countries that adopt these policies. Accordingly, this Note cautions against the adoption of a formal temporary worker program in the United States and argues that the permanent legalization of undocumented immigrants is the most judicious means of reversing recent trends

The King of Hearts Playbill

Providence College Department of Theatre, Dance & Film Blackfriars Theatre The King of Hearts, The Musical! Book by Steve Tesich, Music by Peter Link, Lyrics by Jacob Brackman, Based on an original screenplay by Philippe DeBrocco, Maurice Bessy and Daniel Boulanger April 17-20 & 24-27, 1986 Director, Mary G. Farrell Choreography, Wendy Oliver Musical Direction, Reginald B. Haller, O.P. Scenic and Lighting Design, William Jacobson Costumes, David Costa-Cabral Stage Manager, Mary Lynn Pilarinos Theatre Program Director, John Garrity Cast: Michael J. Day - Johnny; Natalie A. Mageau; Michael Giannamore - Genevieve; Mary Ellen Kopp - Madeleine (Madame); Vincent Lupino - The Duke; Kelly Wescott - The Duchess; Patrick D. Baxter, Jr. - Demosthenes; Stephen Dias - The Bishop; Edward Gibbs Deasy - The Barber; Valerio Carpi, Kelly DiPersio, John Healy, Tracy Kolpa, Amy Robertson, Jim Ubriaco, Stacy Vaughn - The Inmates; Kirsten Heckmann, Dorothy Misti Lafond, Adrienne Locastro, Melissa Sciarra, Carol Yewcic - Dancers American Soldiers: Rick Martin - Lt. McFish; David M. Kerwin - Corporal; John Healy - 1st Soldier; Jim Ubriaco - 2nd Soldier German Soldiers: Steve Webster - Col. Hamburger; Richard Eugene Kozlowski - Privatehttps://digitalcommons.providence.edu/kingofhearts_pubs/1005/thumbnail.jp