Arcades

Experiments with natural ventilation of large construction such as shopping arcades and atria necessitate a set of boundary conditions outside the... 

The Concentric Retriever (Concentric Medical Inc., Mountain View, CA), a flexible, nitinol wire with helical tapering coil loops (X5 and X6) that is used in conjunction with a balloon guide catheter (8 or 9 French) and a microcatheter, is the only device currently approved by the FDA for the endovascular treatment of stroke patients (Fig. 4.3). The second-generation devices (L5 and L6) differ from the X devices by the inclusion of a system of arcading filaments attached to a nontapering... 

FIG. 3. Confocal images showing the location of the SR in live myocytes within an intact, small diameter (< 250 nm passive diameter), pressurized (70 mmHg) artery from the rat mesenteric artery arcade. The artery was loaded with Fluo-4 as the membrane-permeant acetoxymethyl ester. Some of this high-affinity, Ca2+ indicator dye is often sequestered in the SR (cf. Goldman et al 1990). The SR can then be readily visualized, especially when [Ca2+]CYx is low (as in the panels at 0 and 6.8 s), because the intra-SR dye is saturated with Ca2+, and fluoresces brightly. This artery was treated with 1.0 fim phenylephrine (PE), which caused the [Ca2+]CYT level to oscillate asynchronously in the cells seen in the centre of the panel. The cell outlines are clearly visible when [Ca2+]CYT tiscs, as in the panels at 3.4 and 10.2 s. Note that nearly all of the SR (the very bright areas, especially in the 0 and 3.4 s panels) lies parallel to, and immediately beneath the PL (from Miriel at al 1999, with permission). 

A second distinguishing feature of /l-solenoids is their inter-coil interactions. Their stacked coils are coordinated by a network of H-bonds. Usually, the coils in a given /1-solenoid have similar cross-sectional shapes, an arrangement that allows corresponding strands in successive coils to form parallel /1-sheets. The term /1-arc has been proposed for the turns between strands (Hennetin et al., 2006) and they also stack with inter-coil H-bonds, yielding so-called /1-arcades. The inter-coil distance (4.8 0.2 A) is determined by the distance between H-bonded /1-strands, which is the same on all sides of the solenoid. Consequently, /1-solenoids are straight and they contrast in this respect with other kinds of solenoids which mostly have curved shapes (Groves and Barford, 1999 Kobe and Kajava, 2000). 

Fig. 2. Ball-and-stick representations of two differently oriented asparagine ladders of (A) W-arcade taken from the crystal structures of pectate lyase C (Lietzke et al., 1996) and (b) ppl-arcade taken from l DP-.V-aretylglucosamine acyltransferase (Raetz and Roderick, 1995). b, l, and so on refer to a one-letter conformational code (Fig. IOC). The ladders are viewed from within the respective /(-solenoids. The arrow shows the orientation (N- to C-terminal) of the solenoid. Oxygen atoms are in red, nitrogen in blue, and carbon in green. Dotted lines designate H-bonds of side chains (red) and inter-coil H-bonds of the polypeptide backbone (black). Except for the ladder-forming asparagines, only the backbones of the coils are shown. Panels are reprinted from Hennetin et al. (2006) with the permission of the publisher.

Strand-turn-strand motifs in /1-solenoids differ fundamentally from those found in globular proteins. In globular structures, two adjacent strands with an intervening /l-turn form an antiparallel structure called a /1-hairpin (Fig. 10A). In /1-solenoids, the polypeptide chain also folds back on itself, but the flanking /1-strands make contact via their side chains rather than interacting via H-bonds of the backbone (Fig. 10A). As a result, consecutive strands find themselves in two different, parallel, /1-sheets. The latter strand-turn-strand structure is called a /1-arch, and its turn, a /1-arc (Hennetin et at., 2006 Yoder and Jurnak, 1995). In /1-solenoids, /1-arches stack in-register to form /1-arcades which have two parallel /1-sheets assembled from corresponding strands in successive layers. 

Fig. 11. Pie diagrams showing observed percentages of different types of arc conformations in /Fsolenoid proteins. Each circle corresponds to an arc with a certain number of residues. Areas of circles and their sectors are proportional to the number of observed cases. The arcade-forming arcs are in bold and underlined. Reprinted from Hennetin et al (2006) with the permission of the publisher.

Fig. 13. Schematic diagram of a /1-arcade taken from the /1-solenoid domain of the yeast CAP (Dodatko et al, 2004). The arcade is formed by several /1-arches that contain five-residue blbbl /1-arcs. The lower sidewall of the solenoid formed by /1-arcs is omitted to illustrate better the resemblance of this structure to the arcade. Reprinted from Hennetin et al. (2006) with the permission of the publisher.

In view of the consideration that /(-solenoids and /(-arcades may also be structural elements of amyloid fibrils (Kajava et al., 2004 Lazo and Downing, 1998 Margittai and Langen, 2004 Pickersgill, 2003), sequence-based detection and structure prediction of /(-solenoid proteins are pertinent to the identification of amyloidogenic sequences and the elucidation of amyloid fibril structures. As with /(-solenoid domains, amyloidogenic regions of... 

Pausanias says, that he deserved to be called M The Father of Men. —Arcad. Lib. VIII. c. 43. 

The poor of Saint Petersburg may also have touched a deeper vein of nostalgia and compassion in the Sicilian. Not far from the quai du palais stood a block of arcade markets much like those of the Ballaro adjacent to via Perciata in Palermo. After a short walk or sleigh ride from his grand house... 

The following costs are preliminary bench-scale startup costs for the STRATEX technology [D14167D, p. 6 Personal communication Michael Mann, ARCADES Geraghty and Miller, Inc. (formerly Alternative Remedial Technologies, Inc.), December 1996] ... 

Former Motorola Facility, Arcade, New York 4500 yd of soil Trichloroethene (TCE), toluene, ethylbenzene, and xylene 500,000... 

Sass, Stephen L. The Substance of Civilization. New York Arcade Pubhshing, 1998. 

Probably the best book about The Project is The Dialectics of Seeing Walter Benjamin and the Arcades Project by Susan Buck-Morss. She writes, Benjamin took seriously the debris of mass culture as the source of philosophical truth.The surrealists recognized reality as a dream The Arcades Project was to evoke history in order to awaken its readers from it. Dip into The Dialectics of Seeing, and see visions. 

People attempting to read The Arcades Project ssQ nearly gone mad in their quests, which can take several years. Before he killed himself, Benj amin destroyed his copy of the manuscript, and for decades the work was believed lost. Luckily, scholars found a copy, and today the work is available atAmazon.com. 

About the The Arcades Project, New York Times architecture critic Herbert Muschamp wrote ... 

Some of us don t read fiction [and] we will be feasting on Walter Arcades Project for years to come... Those who fall under Benjamin s spell may find themselves less willing to suspend their disbelief in fiction. The city will offer sufficient fantasy to meet most needs.[r/ie Arcades Project] is a towering literary event. A sprawling, fragmented meditation on the ethos of 19th-century Paris... The Arcades Project captures the relationship between a writer and a city in a form as richly developed as those presented in the great cosmopolitan novels of Proust, Joyce, Musil and Isherwood. ... 

Sometimes I imagine myself stuck in a room with Proust s volumes at one end and The Arcades Project at the other. Perhaps I could be happy for the rest of my life in this self-imposed exile. Could you For Benjamin, the enclosed shopping malls of the 19th century were a material replica of a human collective unconscious. Contemplated along with Proust s novels of involuntary memory, we d enter wonderful, qua-quaversal realms of thought and imagination. 

HerbertMuschamp, the Aevr York Times architectural critic, wrote an interesting article about The Arcades Project XhdLt appeared in the Arts Leisure section of the New York Times on January 16, 2000. 

Benjamin, Walter, The Arcades Project Cambridge., Massachusetts Belknap Press, 1999). 

Buck-Morss, Susan, The Dialectics of Seeing Walter Benjamin and the Arcades Project (Cambridge, Massachusetts MIT Press, 1991). 

These vessels end in arcade-like structures at the limbus. The corneal stroma is made of three different main layers that differ in density of collagen and type of packing. The Bowman s membrane of the anterior stroma is part of the basal membrane of the corneal epithelium and accounts for 5% of the thickness of the central 500-600 pm cornea. The corneal stroma consists of highly ordered, horizontally organized and noninterconnected coUagen I and X fibriUae that are kept in a hydrated state with a water content of 72-78% and an osmolarity of 420 mOsmol/kg [1]. 

J. Ayto, Dictionary of Word Origins, Arcade Publishing Inc., New York, 1990, pp. 49,459. 

Miklos Nyiszli, Auschwitz A Doctor s Eyewitness Account, Arcade Publishing, New York 1993... 

Shicchi, H. (1983) Biochemistry of Vision. NY Academic Press pg 107 186Jones, M. (2001) The Molecule Hunt. NY Arcade Publishing pp 50-52... 

The track ball is not as common a device as are the others in this section. Physically it is a ball that is mounted and can be rotated in any direction [the arcade version of Missile-Command uses this device]. As the ball rotates - the direction of rotation indicates the desired direction of movement - the position of a tracking device can be read by the computer (using 8 or 10 bit A/Ds) and a cursors position updated to give visual feedback. Part of the problem with this type of device is its size, the ball may be four to five inches in diameter in order to be easily manipulated. 

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