Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Blank bar

FIGURE 5.13 Experimental distribution ratio of U022+ for the initial set of 19 amides (blank bars) and for 21 newly designed amides (filled bars). Structures on the right correspond to the most efficient new extractant (log D > 1). (From Varnek, A. Fouches, D. Kireeva, N. Klimchuk, O. Marcon, G. Tsivadze, A. Solov ev, V. Radiochimica Acta 2008, 96(8), 505-511. With permission.)... [Pg.349]

Fig.4 Influence of the A1-, Ga-, and B-containing zeolites on the para to ortho xylene ratio at 498K (blank bar) 573K (dashed bar). Fig.4 Influence of the A1-, Ga-, and B-containing zeolites on the para to ortho xylene ratio at 498K (blank bar) 573K (dashed bar).
FIGURE 8.4 Coefficient of friction (patterned bars) measured via AFM (right y-axis) and dichroic ratio (blank bars, left y-axis) measured via NEXAFS spectroscopy as a function of carbon chain length of SAMs... [Pg.183]

Starting the program opens a large SpartanBuild window (blank initially) a model kit and a tool bar Models are as sembled in the window Restart SpartanBuild to continue... [Pg.1258]

The screw conveyor is one of the oldest and most versatile conveyor types. It consists of a helicoid flight (helix rolled from flat steel bar) or a sectional flight (individual sections blanked and formed into a helix from flat plate), mounted on a pipe or shaft and turning in a trough. Power to convey must be transmitted through the pipe or shaft and is limited by the allowable size of this member. Screw-conveyor capacities are generally limited to around 4.72 mVmin (10,000 ftvh). [Pg.1913]

The most important evaluation of an ANG storage systems performance is the measurement of the amount of usable gas which can be delivered from the system. This is frequently defined as the volume of gas obtained from the storage vessel when the pressure is reduced from the storage pressure of 3.5 MPa (35 bar) to one bar, usually at 298 K. This parameter is referred to as the delivered V/V and is easy to determine directly and free from ambiguity. Moreover, it is independent of the ratio of gas adsorbed to that which remains in the gaseous state. To determine the delivered V/V an adsorbent filled vessel of at least several hundred cubic centimeters is pressurized at 3.5 MPa and allowed to cool under that pressure to 298 K. The gas is then released over a time period sufficient to allow the bed temperature to return to 298 K. A blank, where the vessel is filled with a volume of non-porous material, such as copper shot. [Pg.284]

In fact, the vent on the tank was choked. The gauge air pressure (75 psi or 5 bar) was sufficient to burst the tank (design gauge pressure 5 psi or 0.3 bar). Originally the tank had a 6-in.-diameter vent. But at some time this was blanked off, and a 3-in.-diameter dip branch was used instead as the vent. [Pg.52]

When a blank reaction was run by purging the solution of pyrazinone (Scheme 22, pyrazinone b) in o-DCB with ethylene gas and irradiating it at 190 °C for 100 min, only a mere 53% conversion of the starting material was observed. Microwave-enhanced hydrolysis of the sensitive imidoyl chloride moiety of the cycloadduct using aqueous NaOH resulted in a yield of only 12%. However, the situation changed dramatically when the vial was pre-pressurized with ethylene gas at 5 bar. The reaction was completed after 30 min of microwave irradiation at 190 °C, and the hydrolyzed product was isolated in 87% yield. The reaction could be completed in a mere 10 min when carried out at 220 °C at an increased ethylene pressure of 10 bar, or in 20 min at 190 °C at 10 bar ethylene pressure. [Pg.284]

GP 2[ [R 3a[The sputtered silver on aluminum alloy (AlMg3) platelets, machined by thin-wire pEDM, were smooth and dense. On prolonged operation under reaction conditions, small silver particles are generated by surface diffusion so that also the blank aluminum platelet surface is exposed (20 vol.-% ethylene, 80 vol.-% oxygen 3 bar 0.23-2 s 250 °C) [43]. [Pg.305]

A blank schematic is displayed. The title block is in the lower right comer. Use the scroll bars to scroll the page to the lower right comer of the page. I will zoom in on my schematic to see the title block more clearly. (To zoom in, place the mouse pointer over the title block and press the I key.)... [Pg.49]

Buffers should have low absorbance and low fluorescence in the regions of excitation and emission. Absorbance will usually be expected to be <0.1 and fluorescence close to zero. This will normally be the case for standard buffers made from analytical-grade reagents or materials of equivalent purity, but they should nevertheless be checked routinely for fluorescence. If a fluorescent component is added to the solution—e.g., as a ligand—it should be checked that the observed fluorescence arises solely from that component. The actual buffer solution used to dissolve or to dialyze the protein should be used for the fluorescence blank. Plastic containers (and stirring bars) may contribute fluorescent agents if these are used, appropriate blanks should be carefully monitored for fluorescence. [Pg.247]

Figure 1 Individual PVT reaction times (msec) for a representative subject undergoing 88 hr (3.67 days) of total sleep deprivation. Reaction times are from the 10-min visual PVT test bouts at 20 00 on each day of deprivation at 12, 36, 60, and 84 hr of sustained wakefulness. Reaction times after presentation of each stimulus are represented by black bars. Blank spaces between reaction times represent false starts (errors of commission). Reaction times > 500 msec are termed performance lapses, or lapses in attention. After 12 hr of wakefulness, reaction times were comparable across the test bout, with no false starts. At 36 hr of wakefulness, there were occasional lapses in attention (RT > 500 msec), with some false starts near the end of the test bout. After 60 hr awake the frequency of performance lapses was increased a few minutes into the performance bout. At 84 hr of sustained wakefulness, there were significantly more lapses of attention, with RTs > 8000 msec, and a greater incidence of false starts. (From Ref. 44.)... Figure 1 Individual PVT reaction times (msec) for a representative subject undergoing 88 hr (3.67 days) of total sleep deprivation. Reaction times are from the 10-min visual PVT test bouts at 20 00 on each day of deprivation at 12, 36, 60, and 84 hr of sustained wakefulness. Reaction times after presentation of each stimulus are represented by black bars. Blank spaces between reaction times represent false starts (errors of commission). Reaction times > 500 msec are termed performance lapses, or lapses in attention. After 12 hr of wakefulness, reaction times were comparable across the test bout, with no false starts. At 36 hr of wakefulness, there were occasional lapses in attention (RT > 500 msec), with some false starts near the end of the test bout. After 60 hr awake the frequency of performance lapses was increased a few minutes into the performance bout. At 84 hr of sustained wakefulness, there were significantly more lapses of attention, with RTs > 8000 msec, and a greater incidence of false starts. (From Ref. 44.)...
A third limitation of the lapse hypothesis involved its inability to account for errors of commission, which involve responses when no stimulus is present (44). Studies have demonstrated a higher incidence of errors of commission with increasing hours of wakefulness (42,44). Importantly, errors of commission show the same profile of circadian-modulated increases across days of total sleep deprivation that is seen for errors of omission (i.e., lapses) (44). Such errors occur as premature responses during PVT performance, and are represented by blank spaces in between RT bars in Figure 1. After 12 hr of sustained... [Pg.50]

Procedure Transfer 25.0 mL of the Substrate Solution to a 32- x 200-mm test tube. To a second 32- x 200-mm test tube transfer 25.0 mL of the Chloride-Acetate Buffer Solution (blank). Equilibrate both tubes in a 35° 0.1° water bath for 20 min. Add 3.0 mL of the Sample Preparation to each test tube, mix, and insert a glass sparger into each tube with a preadjusted air flow of 700 to 750 mL/min. If excessive foaming occurs, add 3 drops of the Octadecanol Solution to each tube. After exactly 15 min, remove the sparge and rinse any adhering reaction mixture back into the tube with water. Immediately add 10 mL of the Sodium Hydroxide Solution and 3 drops of the Phenolphthalein Solution to each tube. Insert a small magnetic stirrer bar, stir, and titrate to the phenolphthalein endpoint with the standardized 0.05 N Hydrochloric Acid Solution. [Pg.909]

Molecular weight 1E + 6 (Blank out rest of block with the space bar or with... [Pg.124]


See other pages where Blank bar is mentioned: [Pg.689]    [Pg.690]    [Pg.152]    [Pg.689]    [Pg.690]    [Pg.152]    [Pg.176]    [Pg.317]    [Pg.329]    [Pg.338]    [Pg.965]    [Pg.285]    [Pg.355]    [Pg.354]    [Pg.306]    [Pg.220]    [Pg.244]    [Pg.49]    [Pg.95]    [Pg.75]    [Pg.93]    [Pg.310]    [Pg.166]    [Pg.563]    [Pg.139]    [Pg.212]    [Pg.285]    [Pg.947]    [Pg.355]    [Pg.249]    [Pg.171]    [Pg.414]    [Pg.107]    [Pg.220]   
See also in sourсe #XX -- [ Pg.152 ]




SEARCH



Bar

Blank

Blank, blanking

Blanking

© 2024 chempedia.info