Film condensation on the underside of a horizontal surface

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1964.MICROFICHE COPY AVAILABLE IN ENGINEERING.Includes bibliographical references (leaf 25).by Joseph Gerstmann.M.S

Einfluß von Gitterverzerrungen auf Anregungsenergien und Hyperfeinparameter paramagnetischer Defekte

Uwe GerstmannPaderborn, Univ., Diss., 200

Litigating Same-Sex Marriage: Might the Courts Actually Be Bastions of Rationality?

The great political philosopher John Stuart Mill once asked, “Was there any domination which did not appear natural to those that possessed it?” (Mill 1984, 269–270). For same-sex couples seeking access to the institution of marriage, the public sense that marriage is naturally and obviously meant only for opposite-sex couples has been a formidable barrier. The first state supreme courts to rule on same-sex marriage, in the early 1970s, simply relied upon dictionary definitions to hold that marriage was obviously a heterosexual institution.1 Politicians mostly ignored the issue altogether until the courts of Hawaii, Vermont, and Massachusetts forced public debate of the issue

The Many Faces of Strict Scrutiny: How the Supreme Court Changes the Rules in Race Cases

In this paper, we argue that there is no single test called strict scrutiny when the Court considers claims of racial discrimination. In fact, the Court changes the rules depending on why and how the government is using race. By examining racial redistricting, remedial affirmative action, and diversitybased affirmative action cases, we show how the Court uses at least three very different versions of strict scrutiny. The costs of maintaining the fiction of unitary strict scrutiny is high. In the area of racial profiling, for example, courts refuse to apply strict scrutiny for fear that it will either overly hamper police or will weaken strict scrutiny in other areas of racial discrimination. An open acknowledgment that the Court is already using different standards of analysis for different types of racial discrimination would allow courts to craft appropriate standards without fear of diminishing protections in other areas

UNTERSUCHUNG DES STRÖMUNGSWIDERSTANDS AN METALLISCHEN SIEBGEWEBEN IN KRYOGENEN FLÜSSIGKEITEN

Dieser Artikel beschäftigt sich mit theoretischen Ansätzen zur Vorhersage von Strömungswiderständen metallischer Siebe und deren Anwendbarkeit für die Auslegung von realen Tanksystemen. Es werden Ergebnisse vorgestellt von Druckverlustmessungen, die am DLR Bremen mit flüssigem Stickstoff durchgeführt wurden. Die Ergebnisse werden verglichen mit Literaturdaten und zeigen generell eine gute Übereinstimmung. Bedingt durch die geringen Viskositäten kryogener Fluide ist der Einfluss des turbulenten Anteils am Druckverlust sehr hoch. Korrelationen, wie z.B. von Cady [1] und Armour [2], basieren jedoch hauptsächlich auf Daten mit geringerem turbulenten Einfluss und kleinen Re- Zahlen. Die neuen experimentellen Daten bieten eine genauere Vorhersagemöglichkeit bezüglich des Druckverlustes für Siebdurchströmungen im hohen Re- Bereich

Laserlight visual cueing device for freezing of gait in Parkinson's disease: a case study of the biomechanics involved

AbstractBackground: Freezing of gait (FOG) is a serious gait disorder affecting up to two-thirds of people with Parkinson's disease (PD). Cueing has been explored as a method of generating motor execution using visual transverse lines on the floor. However, the impact of a laser light visual cue remains unclear. Objective: To determine the biomechanical effect of a laser cane on FOG in a participant with PD compared to a healthy age- and gender-matched control. Methods: The participant with PD and healthy control were given a task of initiating gait from standing. Electromyography (EMG) data were collected from the tibialis anterior (TA) and the medial gastrocnemius (GS) muscles using an 8-channel system. A 10-camera system (Qualisys) recorded movement in 6 degrees of freedom and a calibrated anatomical system technique was used to construct a full body model. Center of mass (COM) and center of pressure (COP) were the main outcome measures. Results: The uncued condition showed that separation of COM and COP took longer and was of smaller magnitude than the cued condition. EMG activity revealed prolonged activation of GS, with little to no TA activity. The cued condition showed earlier COM and COP separation. There was reduced fluctuation in GS, with abnormal, early bursts of TA activity. Step length improved in the cued condition compared to the uncued condition. Conclusion: Laserlight visual cueing improved step length beyond a non-cued condition for this patient indicating improved posture and muscle control