Flux

The impact of ultrasound (US) on membrane filtration and cleaning were studied and compared at various operating parameters of nominal pore sizes of 10 and 100 kDa membrane, trans-membrane pressure (TMP) of 100 and 140 kPa, and US frequencies of 20 kHz and 40 kHz. An average of 15%–20% increase of permeability was observed when US (20 kHz) was applied to assist membrane filtration on 10 kDa membrane and 100 kPa trans-membrane pressure (TMP). However, an insignificant improvement was observed in the case of larger pore size membrane at higher TMP (140 kPa). US also augmented the membrane cleaning process effectively. Lower frequency 20 kHz US exhibited a higher flux recovery (>90%) than the high frequency 40 kHz (59%) using the 10 kDa pore size membrane with US-assisted membrane cleaning. Important factors influencing optimization of US effectiveness lie heavily on its configuration and operation. The experimental results as supported with SEM images demonstrate that US-assisted filtration and cleaning are most effective when membrane pore size, US frequency, and TMP are lower.

In this paper we assume that the blood is to be a Non-Newtonian and incompressible and Homogeneous fluid. An investigation has been done for the resistance to flow across mild stenosis situated symmetrically on steady blood flow through arteries with uniform or non-uniform cross section. An analytical solution for Power law fluid has been obtained. For the physiological insight of the problem various parameters systemic and pulmonary artery are taken and the study reveals that as the height of the stenosis increases in uniform or non-uniform portion of the artery, the resistance parameter and shear stress also steadily increases, whereas, flow rate decreases steadily and we analyze some cases between flux, pressure gradient and radius and give some significant results.

The ing and integration water ultrafiltration treatment construction of low-pressure (UF) facilities membranes has been and microfiltration new into water both treatexist(MF) and ultrafiltration (UF) membranes into both existing water treatment facilities and new water treatment plant construction has been rapidly gaining favor worldwide (AWWA, 2005). Contributing factors include the efficacy of these membranes in removing cysts and their consistent ability to produce low-turbidity product water despite variations in source water quality. One example of a decision to incorporate MF/UF technology into existing water treatment facilities is in Minnesota, where the Minneapolis Water Works has replaced aging granular media filters with UF at its 70mgd (265-ML/d) Columbia Heights Filtration Plant. Another example is in California, where the Modesto Irrigation District is doubling capacity from 36 to 72 mgd (136 to 273 ML/d) by adding membranes in parallel with existing granular media fil...

Notions de base 1. La logistique 2. La qualité du service 3. Notion des flux 4. Les flux logistiques 5. Les flux physiques 6. Les flux d’information 7. Les flux financiers 8. Les flux poussés 9. Les flux tirés 10. Les flux tendus 11. Les flux synchrones 12. La chaine logistique 13. La supply chain 14. La supply chain management 15. La logistique éclatée 16. La logistique intégrée 17. La logistique étendue Le processus logistique La fonction logistique La performance logistique Les coûts logistiques Logigrammes des 4 processus

This article deals with the philosophical idea of worldmaking pursued through techné, meaning the fusion of the technical means of artistic creation, theorizing, and analysis, but specifically occurring in a feedback loop involving introspection and computation (cybernetic phenomenology). The discussion ranges over a wide variety of topics, including (1) the history of music theory from Ancient Greece to the present (including a rebuttal to Daniel Chua’s (2001) account of music history); (2) emergent properties in music arising from self-organization (explored through the Ancient Chinese abstract strategy board game go); (3) the ontology of musical qualities (properties) and categories (including their relation to visual, tactile, and olfactory qualities and categories). 
Various repertoires, artists, and philosophies are referenced. The essay analyzes aspects of Ligeti’s Violin Concerto, Carter’s String Quartet No. 5, and Lachenmann’s Kinderspiel.  Connections to the author’s own previous analytical and theoretical work are also discussed in relation to his interactive algorithmic audio-visual works (such as Fluxations and FluxNOISations). The techné of these is discussed in terms of logistics as well as aesthetic influences, including Wagner, Liszt, Stravinsky, Schoenberg, Crawford, Babbitt, Carter, Xenakis, Parker, Reich, Ligeti, Truax, Oliveros, Kandinsky, Miro, Pollock, Pollock, Hofmann, Rothko, Louis, Frankenthaler, Moholy-Nagy, Newman, Richter, and Brakhage.  The essay touches on philosophical ideas of Bergson, Whitehead, Deleuze, Harman, and Bogost, and more fully engages the philosophies of Nelson Goodman and Hannah Arendt in connection with artistic creation as relating to the theorizing and analysis of artistic works.     

Contact the author at jmailman@alumni.uchicago.edu
Download the article through JSTOR: http://www.jstor.org/stable/10.7757/persnewmusi.54.1.0005
or http://tinyurl.com/zdvkllr

Recreation and leisure studies in North America offers a number of intriguing parallels with tourism. Both have diverse origins; are inherently interdisciplinary; and combine traditional multi-theoretical, descriptive, and applied research with innovative scholarship that is devoted to ...