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Polyetherimide. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?) Polyetherimide ( PEI; branded as Ultem [1]) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. When comparing PEI to PEEK, the former is cheaper but has ...
Atotech is an international speciality chemicals and equipment company. It provides chemistry and equipment for companies that manufacture printed circuit boards, IC-substrates and semiconductors; and also provides specialty chemicals and equipment for decorative and functional surface finishing in the automotive, construction, furniture and ...
Donel Austin - Lipstick Traces. " Lipstick Traces (on a Cigarette) " is a song first recorded by New Orleans singer Benny Spellman in 1962. It was written by Allen Toussaint under the pseudonym Naomi Neville. The song became Spellman's only hit record, peaking at number 28 on the Billboard R&B chart and number 80 on the Billboard Hot 100 pop chart.
In physics, terahertz time-domain spectroscopy ( THz-TDS) is a spectroscopic technique in which the properties of matter are probed with short pulses of terahertz radiation. The generation and detection scheme is sensitive to the sample's effect on both the amplitude and the phase of the terahertz radiation. Fourier transform of the above pulse.
A checksum of a message is a modular arithmetic sum of message code words of a fixed word length (e.g., byte values). The sum may be negated by means of a ones'-complement operation prior to transmission to detect unintentional all-zero messages.
Tabular Data Stream (TDS) is an application layer protocol used to transfer data between a database server and a client. It was initially designed and developed by Sybase Inc. for their Sybase SQL Server relational database engine in 1984, and later by Microsoft in Microsoft SQL Server .
Sodium polyacrylate ( ACR, ASAP, or PAAS ), [1] : 233 also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [−CH 2 −CH (CO 2 Na)−] n and has broad applications in consumer products. This super-absorbent polymer (SAP) has the ability to absorb 100 to 1000 times its mass in water.
2. DHL de Guatemala Flight 7216 was an international cargo flight between Costa Rica's Juan Santamaría International Airport ( IATA: SJO, ICAO: MROC) and Guatemala City's La Aurora International Airport ( IATA: GUA, ICAO: MGGT ). On 7 April 2022, the Boeing 757 operating the flight suffered a hydraulic failure, and crashed on landing at the ...