Problem: There are two major mechanical pulps, the thermomechanical one (TMP) and groundwood pulp (GW). In the TMP process, wood is chipped and then fed into large steam heated refiners, where the chips are squeezed and converted to fibres between two steel discs. In the groundwood process, debarked logs are fed into grinders where they are pressed against rotating stones to be made into fibres. Mechanical pulping does not remove the lignin, so the yield is very high, >95%, however it causes the paper thus produced to turn yellow and become brittle over time. Mechanical pulps have rather short fibres, thus producing weak paper. Although large amounts of electrical energy are required to produce mechanical pulp, it costs less than the chemical kind.
In which process are the chips converted to fibers between three steel discs?
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Answer: unanswerable

Problem: The national economy grew significantly through agrarian reform, major modernization projects such as the Helwan steel works and the Aswan Dam, and nationalization schemes such as that of the Suez Canal. However, the marked economic growth of the early 1960s took a downturn for the remainder of the decade, only recovering in 1970. Egypt experienced a "golden age" of culture during Nasser's presidency, according to historian Joel Gordon, particularly in film, television, theater, radio, literature, fine arts, comedy, poetry, and music. Egypt under Nasser dominated the Arab world in these fields, producing cultural icons.
How was Egyptian culture under Nasser refered to?
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Answer: golden age

Problem: Some risk factors for death include age, hemodynamic parameters (such as heart failure, cardiac arrest on admission, systolic blood pressure, or Killip class of two or greater), ST-segment deviation, diabetes, serum creatinine, peripheral vascular disease, and elevation of cardiac markers. Assessment of left ventricular ejection fraction may increase the predictive power. Prognosis is worse if a mechanical complication such as papillary muscle or myocardial free wall rupture occurs. Morbidity and mortality from myocardial infarction has improved over the years due to better treatment.
Prognosis improves after what complication?
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Answer:
unanswerable