Wire loop

Electric matches (Ref 6) are small resin-impregnated paper strips on which conductive brass strips are laminated with a wire loop affixed over one end. Two layers of K chlorate,... 

The In-Time Retriever (Boston Scientific, Natick, MA) has four to six wire loops and tends to bow when opened but has no specific opening to capture the embolus. This device has been successfully used in a case of an MCA occlusion resistant to thrombolytics and balloon angioplasty, as well as in cases of basilar occlusion. The TriSpan (Boston Scientific, Natick, MA), a neck bridge device consisting of three nitinol loops originally designed to treat wide-necked aneurysms, has also been used to treat basilar occlusions. ... 

Four tests were employed against houseflies the standard Peet-Grady method (1) the turntable method (2) the loop method, in which the material is applied to individual female houseflies, by means of a calibrated wire loop (9) and a residual deposit test, in which flies are exposed to glass plates 25 hours after they have been sprayed with acetone solutions of the products. 

Remove the top portion of the sample with a wire loop bent at a right angle. Place several loopfuls on a glass slide (2 by 3 in.). Cover the specimen with a 22-mm cover slip, and examine the slide with a X 40 objective. Oocysts are found just beneath the cover slip and are refractile. Saline or iodine is not used in the preparation of these mounts. 

Attach a wire loop securely to each end of the counterweight. Grenade fuse pull rings are ideal, or the rings can be fashioned by bending nails or stiff wire into loops. 

Jenkins EC. Wire-loop application of liquid emulsion to slides for autoradiography in light microscopy. Stain Technol 1972 47 23-26. 

Electron microscope Knife breaker Light-tight darkroom Tabletop centrifuge Ultramicrotome Water bath, 45°C Wire loop oftungsten or platinum... 

Use a platinum wire loop or forceps to transfer the grid to the surface of a droplet of appropriately diluted primary antibody. Incubate from 30 min to overnight (depending on dilution, temperature, etc.). Longer incubations with higher dilutions of antibody produce more specific labeling. 

A microsampling system known as the Delve s cup is a hybrid of flameless and flame techniques. The sample is placed in a small crucible, which is held in the flame by means of a wire loop. The sample is ashed in a cooler part of the flame and then moved to the hotter part in order to cause the rapid vaporization of the element. The cup is held beneath an opening in a nickel or aluminium tube which is in the light path of the instrument. The atomic vapour... 

The basics of the paste preparation were explained in Sect. 2.3.3. For the devices presented in this book, the paste was deposited onto cleaned chips using a dropcoating method [48,61]. The deposition was performed by the company Applied-Sensor (Reutlingen, Germany). A metal-wire loop is immersed in the paste and the tin-oxide suspension adhering to the loop forms a droplet, which is accurately positioned in the membrane center. After the drop deposition, the whole chip is put in a belt oven and annealed for 20 min at a temperature of 400 °C. This temperature is close to the elevated-temperature steps at the backend of the CMOS process. Consequently, we never observed a significant difference of the circuitry performance between coated and uncoated chips. The whole deposition process is, therefore, fully CMOS compatible, and no additional on-chip annealing is necessary. 

Employing a direct exposure probe (DEP) may be helpful in case of analytes that cannot be evaporated from a sample vial without complete decomposition. [44] Here, the analyte is applied from solution or suspension to the outside of a thin wire loop or pin which is then directly exposed to the ionizing electron beam. This method has also been termed in-beam electron ionization. Early work describing the direct exposure of a sample to the electron beam came from Ohashi, [45,46] Constantin, [47] and Traldi. [48,49]... 

Cl in conjunction with a direct exposure probe is known as desorption chemical ionization (DCI). [30,89,90] In DCI, the analyte is applied from solution or suspension to the outside of a thin resistively heated wire loop or coil. Then, the analyte is directly exposed to the reagent gas plasma while being rapidly heated at rates of several hundred °C s and to temperatures up to about 1500 °C (Chap. 5.3.2 and Fig. 5.16). The actual shape of the wire, the method how exactly the sample is applied to it, and the heating rate are of importance for the analytical result. [91,92] The rapid heating of the sample plays an important role in promoting molecular species rather than pyrolysis products. [93] A laser can be used to effect extremely fast evaporation from the probe prior to CL [94] In case of nonavailability of a dedicated DCI probe, a field emitter on a field desorption probe (Chap. 8) might serve as a replacement. [30,95] Different from desorption electron ionization (DEI), DCI plays an important role. [92] DCI can be employed to detect arsenic compounds present in the marine and terrestrial environment [96], to determine the sequence distribution of P-hydroxyalkanoate units in bacterial copolyesters [97], to identify additives in polymer extracts [98] and more. [99] Provided appropriate experimental setup, high resolution and accurate mass measurements can also be achieved in DCI mode. [100]... 

The experiments were conducted in a one-compartment cell with the reference electrode separated from the main compartment by a Luggln capillary and a closed electrolyte-wetted stopcock. The counter electrode was a gold wire loop and the reference electrode... 

Electrodes are made using heavy duty foil affixed to both ends of a microscope slide with a small (5 mm) gap in between. Wire loops are sandwiched between layers of each foil electrode. The wire loops can then be connected to the pulse generator. 

The direct vaporization of refractory metals from wire loops can be accomplished with large, thin-walled reactor vessels. The high cooling efficiency of thin walls and increased distance between vaporization source and cold surface permit efficient heat dissipation, which is necessary with refractory metals, t... 

After the moisture has been collected, transfer the trap to a constant temp bath at 40°C 2°C. Allow about 30 mins for trap contents to reach the temp of the bath. By means of a wire loop work any droplets of water trapped along the side to the bottom of the trap. Read the volume of the water collected... 

Fig. 3.4 (c) Penn State design tip exchange setup ffor an FIM or a pulsed-laser atom-probe with a vacuum lock. The tip can be heated by passing a current through the wire loop. The tip is mounted on an internal gimbal and is cooled through a copper braid by a refrigerator. 

For etching a very small specimen such as a very thin whisker, a drop of the polishing solution may be supported on a small wire loop, as shown in Fig. 3.5(d). The whisker is then dipped into the solution. All the electrochemical polishing may be done under a low power optical microscope. This tip polishing method has been used very successfully for polishing silicon and other semiconductor tips from thin whiskers, and also for polishing high temperature superconductor tips out of small, finely shaped chips.11... 

FIG. 6.2 Illustrations of liquid film formation, contact angle, and measurement of contact angle (a) a wire loop with a slide wire on which a liquid film might be formed and stretched by an applied force F. (b) profile of a three-phase (solid, liquid, gas) boundary that defines the contact angle 0. (c) the tilted plate method for measuring contact angles. 

The substrate samples were inserted into the high temperature zone through a hole in the top of the furnace lid. These samples consisted of beads fused onto small platinum wire loops which were suspended from a long platinum wire holder cemented into an alumina plug. 

For the fixed circumference of a wire loop, only some wavelengths are self-reinforcing, (a) The loop affixed to the post of a mechanical vibrator at rest. Waves are sent through the wire when the post vibrates, (b) Waves created by vibration at particular rates are self-reinforcing, (c) Waves created by vibration at other rates are not self-reinforcing. 

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