Search results
Results from the WOW.Com Content Network
Polybenzimidazole (PBI, short for poly[2,2’-(m-phenylen)-5,5’-bisbenzimidazole]) fiber is a synthetic fiber with a very high decomposition temperature. It does not exhibit a melting point , it has exceptional thermal and chemical stability, and it does not readily ignite. [ 1 ]
When mixed, as the lead from one solution and the iodide from the other combine to form lead(II) iodide (PbI 2), which is insoluble at low temperature and has a bright golden-yellow color. Although this is a reaction solely of the dissociated ions in solution, it is sometimes referred to as a double displacement reaction : [ 1 ]
PbI 2 is commonly synthesized via a precipitation reaction between potassium iodide KI and lead(II) nitrate Pb (NO 3) 2 in water solution: Pb(NO 3) 2 + 2 KI → PbI 2 + 2 KNO 3. While the potassium nitrate KNO 3 is soluble, the lead iodide PbI 2 is nearly insoluble at room temperature, and thus precipitates out. [17]
The Comparative Tracking Index (CTI) is used to measure the electrical breakdown (tracking) properties of an insulating material.Tracking is an electrical breakdown on the surface of an insulating material wherein an initial exposure to electrical arcing heat carbonizes the material.
Positive behavior interventions and supports (PBIS) is a set of ideas and tools used in schools to improve students' behavior.PBIS uses evidence and data-based programs, practices, and strategies to frame behavioral improvement relating to student growth in academic performance, safety, behavior, and establishing and maintaining positive school culture.
Civilian and military positions in the acquisition workforce have acquisition duties that fall into fifteen functional areas. For each area, certification is available at three levels typified as Level I Basic or Entry (GS5-9), Level II Intermediate or Journeyman (GS 9-12), and Level III Advanced or Senior (GS 13 and above): Auditing
The Multidimensional Aptitude Battery II is a group-administered intelligence test created by psychologist Douglas N. Jackson which is supposed to measure Verbal, Performance and Full Scale IQ. The battery consists of 10 subtests and is used for various professional, medical, military, government, law enforcement and employment settings.
[2] [3] BAM is the compressed binary representation of SAM (Sequence Alignment Map), a compact and index-able representation of nucleotide sequence alignments. [ 4 ] The goal of indexing is to retrieve alignments that overlap a specific location quickly without having to go through all of them.