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Available from 2014, replacing syllabus 6050; cannot be combined with syllabuses 0638 & 0649 link: CIE 7010 Computer Studies: Yes Yes Partial Common with syllabus 0420 ; last exam in 2014, to be replaced with syllabus 2210 from 2015 link: CIE 7017 Computer Studies (Singapore) Yes Yes No Singapore only; last exam in 2014 syllabus: CIE 7048
A thermoplastic, or thermosoftening plastic, is any plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. [ 1 ] [ 2 ] Most thermoplastics have a high molecular weight .
During the COVID-19 pandemic, all IGCSE examinations due to take place in May/June 2020 were cancelled, along with GCSE and A-Level exams that year. As of 31 March 2020, the CAIE had decided to guide schools to predict students' grades through evidence like mock examination results. [27]
In materials science, a thermosetting polymer, often called a thermoset, is a polymer that is obtained by irreversibly hardening ("curing") a soft solid or viscous liquid prepolymer . [1] Curing is induced by heat or suitable radiation and may be promoted by high pressure or mixing with a catalyst .
Chemical structure of Kapton, a polyimide. Polyimide (sometimes abbreviated PI) is a polymer containing imide groups belonging to the class of high-performance plastics.With their high heat-resistance, polyimides enjoy diverse applications in roles demanding rugged organic materials, such as high temperature fuel cells, displays, and various military roles.
The fracture toughness of carbon fiber reinforced plastics is governed by the mechanisms: 1) debonding between the carbon fiber and polymer matrix, 2) fiber pull-out, and 3) delamination between the CFRP sheets. [8] Typical epoxy-based CFRPs exhibit virtually no plasticity, with less than 0.5% strain to failure.
However, upon the administration, these polymers phase-separate and form insoluble aggregates at site of administration (this process is called thermogelling). [23] When PNIPA is administered into muscles of mice, its half-life was approximately 48 days ( M w = 20 kg/mol) and 66 days ( M w = 32 kg/mol) and caused no local or systemic ...
Under the recent syllabus, candidates can choose between Chemistry and ICT, although Combined Mathematics and Physics are mandatory. Combined Mathematics is a combination of Pure Mathematics and Applied Mathematics. Previously, candidates had to study these two subjects separately, but with the introduction of the Combined Mathematics syllabus ...