Round disks

Polymer Processing. Polymer films were cast in trimethylsilyl coated glass molds from membrane filtered 15% (w/v) methylene chloride or chloroform solutions. Transparent films were obtained which were dried to constant weight in high vacuum. Rectangular strips or round disks were cut from the films. For compression molding a Carver laboratory press equipped with thermostated, heated platens was used. Polymers were placed in a stainless steel mold and heated to 40 °C above their glass transition temperature. Then a load of 1-2 tons was applied for 5 min. 

Fig. 1. Corpuscular porous structures, (a) The element of the packing of spheres (b) the model of round disk packings (c,d) models of the packing of round rods.

Powder mixtures were placed in a graphite mould and then sintered at the temperatures shown in Table 1 for 2 h by hot pressing at 30 MPa in an Ar atmosphere. The sintered compacts were ground to a thickness about 0.5 mm and then diamond-polished. They were finally cut into small round disks, 10 mm in diameter and about 0.5 mm in thickness, with a ultrasonic cutting machine. 

Based on studies of the formation of amorphous 3-D arrays of CdSe nanocrystals [44] and of compact round disks of similar particles [45], a step forward was proposed by Ge and Brus, who reported planar monolayer aggregates that consisted of 80-100 identical 4 nm CdSe nanocrystals which diffused on planar graphite surfaces [46]. Subsequent investigations into the collective motion of a very small nanocrystal superlattice have opened up yet another new field of research. 

Oesterle fixed round disk, duroplast, copper or steel 0-20N resistance against mar effect. 

Cmrently, a novel SDH prototype is being developed to enable a 100 % coverage of the microarray slide, where our current prototype covers cmly 30 % of the microarray slide. In order to use shear-driven convection on standard microarray shdes, the prototype needs to be redesigned from a rotating to a lateral movement or change the standard microar-ray slides to microarrays on round disks. 

The most visible component of a sprinkler system is the sprinkler head. A sprinkler head consists of a deflector, which looks like a round disk with teeth cut out into it. The deflector is supported by two frame arms that run between the deflector and the threaded base, which is screwed into the sprinkler system piping. To keep the water from escaping, an orifice cap, which acts much like a cork in a bottle, is held in place by a thermally activated releasing mechanism. There are two systems of thermally activated releasing mechanisms used for this purpose. The first is a frangible bulb, which will appear like a small glass tube filled with a colored liquid, in the center of the sprinkler head. The color of the liquid indicates... 

In the production of round disks with a diameter from 500 mm to 4400 mm and a thickness from 200 mm to 1400 mm, blanks of the largest possible volume are manufactured including the stage of the ceramizing process. From these blanks the desired dimensions are manufactured by sawing, grinding,... 

After casting, the bar, block, or round disk is cooled to room temperature in the glassy condition. This process consists of two phases (Fig. 4.16) ... 

The construction of the miniature alkaline-manganese dioxide ceU is shown in Fig. 10.4. It is essentially the same as the construction of other miniature alkaline eeUs. There are a bottom cup with a cathode pellet in it, an anode cup containing the anode mix, one or more round disks of separator material between them, and a plastic seal that is compressed between the bottom cup and the anode eup to prevent leakage. 

Table 5.72 Mass increase (%) in SAN, measured on injection molded round disks after 24 h and seven days exposure to media at room temperature, respectively [667]...

The extruder head assembly includes the breaker plate (or a screen changer holding the breaker plate), an adaptor to connect the die assembly to the end of the extruder, and die. The breaker plate, shown in Fig. 12.49, is a round disk containing a large number of holes that is placed between the end of the extruder and adapter. The functions of the breaker plate are ... 

Red blood cell Tiny, round, disk-shaped red blood cells constantly transport oxygen throughout the body. Their unique structure allows them to squeeze through even the tiniest of spaces, efficiently carrying oxygen to every other cell in the body. 

The organic surfactants were removed via the procedure of previously reports [2] before fabrication of bulk samples for thermoelectric measurement. Briefly, as-prepared silver chalcogenides were dispersed in cyclohexane with hydrazine solution (85 % v/v) and stirred vigorously until all the nanocrystals precipitated. The supernatant is decanted and the precipitate is washed with ethanol three to four times to remove hydrazine and collected by centrifugation, and then dried in vacuum at 65 °C. After the hydrazine treatment, the nanocrystals are hot-pressed into rectangular (10 mm x 4 mm x 1.5 mm) and round disk bulk samples (with diameter of about 13 mm and thickness of 2 mm) under 60 MPa at 400 for 30 min. 

Rectangular shape samples with typical sizes of 10 mm x 4 mm x 1.5 mm were employed to simultaneously measure electrical conductivity o and Seebeck coefficient S by the standard four-probe methods in a He atmosphere (ULVAC-RIKO ZEM-3). Thermal conductivity k was calculated using the equation k = apC from the thermal diflfusivity a obtained by a flash diflusivity method (LFA 457, Netzsch) on a round disk sample with diameter of about 13 mm and thickness of 2 mm, and specific heat Cp was determined by a differential scanning calorimeter method (DSC Q2000, Netzsch). 

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