Double rows

Double-row Heavy radial with minimal bearing deflection and light thrust loads. 

Spherical High radial and moderate-to-heavy thrust loads, usually comes in double-row mounting that is inherently self-aligning. 

Figure 60.12 Double-row internal self-aligning bearing...

They come in both single-row and double-row mountings. As with all cylindrical roller bearings, the singlerow mounting type has a low thrust capacity, but angular mounting of rolls in the double-row type permits its use for combined axial and thmst loads. 

Figure 1.17 The left-hand STM image shows homochiral adenine rows aligned in low symmetry but mirror image azimuths on a Cu(l 1 0) surface. On the right, adenine rows in the (1,2) direction are decorated with double rows of S-phenylglycine molecules, while no such interaction occurs with (1, -2) rows. (Adapted with permission from Ref. [60], Copyright 2000, Macmillan Publishers Ltd.)...

Erect supports for peas, climbing beans, and cordon tomatoes before you sow or plant. For climbing beans, make tepees of canes, or double rows of canes tied together at the top, with one plant at the base of each cane. The beans may need to be guided to their supports and tied in, but will then start to spiral up the canes unaided. Peas have tendrils that will cling to twiggy sticks or wide-mesh pea netting. 

The goethite structure consists of an hep array of anions (0 and OH ) stacked along the [010] direction with Fe " ions occupying half the octahedral interstices within a layer (Fig. 2.4a-c). The Fe ions are arranged in double rows separated by double rows of empty sites (Fig. 2.4a, c) at the crystal surfaces the empty sites appear as grooves (Fig. 2.4d). 

Like goethite and akaganeite, lepidocrocite consists of double chains of Fe(0,0H)6 octahedra running parallel to the c-axis. The double chains share edges with adjacent double chains and each chain is displaced by half, with respect to its neighbour, thus forming corrugated sheets of octahedra (Fig. 2.5 d). These sheets are stacked perpendicular to the [100] direction and are separated by double rows of empty octahedral sites. 

Fig. 17.4 Magnetobacterium bavaricum from lake Chiemsee, Bavaria with four double rows of bullet-shaped magnetosomes (courtesy Dr. M. Hanslick, Munich)...

Figure 4.9. Constant current images (10.5 x 6.9 nm ) at 41 K. (A) HtBDC double row structure (Vt = 1.070 V, k = 0.45 nA). The trenches in the underlying surface are sketched. (B) The trenches in the surface layers are disclosed after manipulating the molecules aside (Vt = 1 mV, k = 1-82 nA). Atomic resolution along the close-packed direction was obtained in the left part of the image (vertical fast scanning direction), whereas it was lost when the tip scanned the restructured area. (C) Ball model of the double row structure. The substrate atoms are shaded darker the deeper the layers lie, while the molecules are shown on top. Reprinted with permission from M. Schunack, L. Petersen, A. Kiihnle, E. Laegsgaard, I. Stensgaard, I. Johannsen and F. Besenbacher, Physical Review Letters 86, 456 (2001). Copyright (2001) by the American Physical Society.

Reconstruction of Au(lll) is observed in STM images as double rows separated from each other by 6.3 nm [335]. Some model calculations have been performed [362] to show that the energy difference of the reconstructed and unreconstructed Au(lll) is small. The effect of Triton X-100 on the reconstruction process of Au(lll) surface has been studied in chloride media [363] applying CV and double potential-step chronocoulometry. It has been found that adsorption of Triton X-100 stabilizes the reconstructed face of Au(lll). Hobara etal. [364] have used in situ STM to study reconstruction of Au(lll), following reductive desorption of 2-mercaptoethanesulfonic acid SAMs. 

Figure 24m HREM image of a characteristic defect, an extra row of atoms appears in the perovskite layer such a defect is interpreted by the existence of a double row of edge sharing Cu04...

I looked around me in amazement. I had never seen rooms, cupboards, passages, and corridors, so choked, so suffocated with books. Treble rows were here, double rows were there. Hundreds of slim quartos— several upon each other—were longitudinally placed over thin and stunted duodecimos, reaching from one extremity of a shelf to another. Up to the very ceiling the piles of volumes extended while the floor was strewn with them, in loose and numerous heaps. When I looked on all this, and thought what might be at [his other homes] it was difficult to describe my emotions. ... 

In large establishments, a aeries of sixteen or moro vats in a double row are employod, and these may bo constructed by fixing longitudinal and transverse partitions in one large vessel. 

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