Poor Gates

Jetting Part deformed by turbulent flow of material Poor tool design, gate position or runner, injection speed set too high, poor gate design causing small die swell in part... 

Theoretically the pin may give poor gate closure during injection of plastics with a mineral filler, because too great a pin closure force may cause compaction of the filler at the contact surface. Manufacturers using this type of closure do not confirm that such cases occur ... 

Unfortunately, the pharmacology of chloride channels is poorly developed. Specific and highly useful inhibitors or modulators (e.g. strychnine, picrotoxin, diazepams) are only available for ligand-gated chloride channels (but these are covered in a different chapter). There are several chloride channel inhibitors such as the stilbene-disulfonates DIDS and SITS, 9-antracene-carboxylic acid (9-AC), arylaminobenzoates such as DPC and NPPB, niflumic acids and derivates, sulfony-lureas, and zinc and cadmium. All of these inhibitors, however, are not veiy specific. Several of these inhibitors (e.g. DIDS) inhibit many chloride channels only partially even at millimolar concentrations and have effects on other types of transport proteins. 

Mt. Wilson Observatory. The UnISIS excimer laser system is deployed on the 2.5 m telescope at Mt. Wilson Observatory (Thompson and Castle, 1992). A schematic of the system layout is shown in Fig. 11. The30W, 351 nm excimer laser is located in the coude room. The laser has a 20 ns pulse length, with a repetition rate of 167 or 333 Hz. The laser light is projected from the 2.5 m mirror and focused at 18 km. A fast gating scheme isolates the focused waist. A NGS is needed to guide a tip-tilt mirror. Even with relatively poor seeing, UnISIS has been able to correct a star to the diffraction limit. 

Common problems like insufficient filling-packing and poor dimensional control are often related to the gate size and design. Similarly, gate location is another important factor. They should be located in areas having heaviest cross-section of the part to assure fill-out and elimination of sink marks. Also their position should not facilitate the residual molded stress formation in the part, knit line formation. 

The inkjet-printed (or inkjetted ) TFT operated with a mobility of 6.5cm2/ Vs and an on/off ratio of three digits as shown in Fig. 5.6b. This low mobility is attributed to the poor crystallinity and rough surface, whereas the large off current, which was confirmed to be the current between source and drain rather than a leakage current through the gate insulator, is also attributed to... 

Initial evidence linking Hebb s coincidence detection rule to learning and memory. As the unique receptor in the brain with the coincidence-detection property, the NMDA receptor is an ideal candidate to gate the formation of memory at the synaptic level. Early observations demonstrated that infusion of NMDA receptor blockers into brain ventricles resulted in animals poor performance in the hidden-platform water maze. At first, this seemed to provide evidence for the role of hippocampal LTP in memory formation. Unfortunately, careful analyses revealed that poor performances in the water maze tests... 

JNSUFFiClENT INHIBITOR DETECTED BUT NONE ADDED DUE TO POOR COMMUNICATIONS [GATES B-21,-5 PRIMAL EVENTS B 12. -09. -10)... 

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