Needle throwing

The correlation coefficient is calculated by the technique of dipole or needle throwing. Consider a mixture of carbon black in PE with C average carbon black concentration. We fracture one peUet, and we take a photograph of the surface with the aid of a high resolution scanning electron microscope. We take a needle of length r and drop it onto the photograph. Four events can take place (1) both ends could land in carbon black particles with probability Pn (2) both ends could land in the PE matrix with probability P22, (3) the first end lands in carbon black and the second in PE with probability Pu, and (4) the opposite of the previous event with probability P2i- Nadav and Tadmor (1973) calculated the correlation coefficient as... 

Doppel aus6chlag, m. double throw or deflection (as of a balance needle), -bier, n. double beer, -bild, n. double image, -bindung, /. double bond, double linkage, -boden, m. double bottom, false bottom jacket, -bogen, m. double bend U-tube, XJ-pipe. doppel-borsauer, a. biborate (tetraborate) of. 

Wadel,/, needle pin. nadelartig, a. needle-like, acicular. Nadel-ausschlag, m. throw (deflection) of the needle, -baum, m, coniferous tree, -biatt, n. (Bot.) acicular leaf, needle,... 

The basic stitch produced in warp knitting is the chain stitch. The yam is looped around the needle stem and another loop of the yam is formed in the hook of the needle and is then pulled through the first loop, itself then becoming the loop held on the needle shaft, whilst another loop is formed in the hook. In this way a chain of interlaced loops is formed. By displacing every other loop onto the next needle, the chains of interlaced loops are linked together to form the simple knotted tricot structure. If one of the yam loops become broken in this type of fabric then the whole fabric, in the line of the yam, will unzip . This problem can be overcome by displacing the throw of the stitches. 

The sample enters the GC at the injection port (Fig. 107). You use a microliter syringe to pierce the rubber septum and inject the sample onto the column. Don t stab yourself or anyone else with the needle. Remember, this is not dart night at the pub. Don t throw the syringe at the septum. There is a way to do this. 

You might use throw-away needles that would avoid cleaning of the needle. The needles would have to be in a sterile package, such that they could be attached to the injector without risk of contamination. 

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