1.2 million tons/year propylene whole industry chain project announced
Time of Update: 2022-08-17
5 billion, which will be constructed in two phases: The first phase mainly builds 600,000 tons/year propane dehydrogenation, 800,000 tons/year polypropylene, 400,000 tons/year modified polypropylene new material production lines and supporting public works; and transfers some production-oriented service industries of Kingfa Technology to A Fang Jurisdiction .
Shimadzu application: MDGC/GCMS method for the detection of organophosphorus pesticides in complex matrix samples
Time of Update: 2022-03-17
For samples that exceed the standard or are close to the limit value, use double-column and double FPD to re-test, and then use GCMS to determine if it still cannot be confirmed, so that the detection of pesticide residues in vegetables is faster and more accurate .
Industrial Acrylonitrile—Determination of Iron and Copper Content Spectrophotometric Method (2
Time of Update: 2022-01-12
1 Method summaryThe sample is evaporated to dryness and digested with mixed acid to remove organic matter, iron is converted into water-soluble salt, and trivalent iron ion (Fe 3+ ) is reduced to divalent iron ion (Fe² + ) with hydroxylamine hydrochloride , which is combined with o-phenanthroline The reaction produces an orange-red complex: the absorbance is measured at 510nm with a spectrophotometer .
Lancet Sub-Journal: What is the probability of recurrence of stroke after cerebral hemorrhage
Time of Update: 2021-06-10
Comparing population-based research data with data from patients who did not receive antiplatelet therapy when restarting, there is no evidence that there is a difference in recurrence rates of cerebral hemorrhage or ischemic stroke.
Shanghai people letter chemical agent: the United States Coman water additives, rust-free conversion agents, adhesives, water-packed water additives series, British desiccant series
Time of Update: 2020-10-13
POLIROL LAM, ammonium salt, use: relatively low molecular weight of LAM, no foam, especially suitable for the preparation of pigment slurry, zero VOC, applied to the exterior paint performance is particularly excellent, water resistance is particularly strong.
The first fabilavir generic in China was approved for marketing
Time of Update: 2020-02-17
Novel coronavirus pneumonia was published in February 17, 2020 / medical information As of February 16th, 70548 cases were confirmed nationwide The first case in China and second cases of new crown pn
Installation, use and maintenance of swing granulator
Time of Update: 2015-07-01
Installation instructions for swing granulator 1 This machine is packed as a whole After unpacking, it can be moved to a proper place for use It can be used after being leveled 2 The device of the ele