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[9] [8] The earliest use of water-powered mills in paper production, specifically the use of pulp mills for preparing the pulp for papermaking, dates back to Samarkand in the 8th century. [10] The earliest references to paper mills also come from the medieval Islamic world, where they were first noted in the 9th century by Arabic geographers in ...
On 5 May 2021, Joko Widodo signed Presidential Decree No. 33/2021, effectively establishing BRIN as the sole national research agency and decreeing that all Indonesian national research agencies—such as the Indonesian Institute of Sciences (LIPI), the Agency for the Assessment and Application of Technology [] (BPPT), the National Nuclear Energy Agency of Indonesia [] (BATAN), and the ...
However, at that time, the agency was still existed on paper and physically inexistent. After procuring enough resources and assets, the agency finally came into being on 12 December 1975 thru Ministry of Health Decree No. 114/1975 and named as Badan Penelitian dan Pengembangan Kesehatan or colloquially abbreviated as Balitbangkes. [3]
CBRN disposal technicians taking part in a training exercise. Chemical, biological, radiological, and nuclear defense (CBRN defense) or Nuclear, biological, and chemical protection (NBC protection) is a class of protective measures taken in situations where chemical, biological, radiological, or nuclear (including terrorism) hazards may be present.
The Indonesian Agency for Agricultural Research and Development (Indonesian: Badan Penelitian dan Pengembangan Pertanian, abbreviated as Balitbangtan) abbreviated in English as IAARD was a supporting unit of the Ministry of Agriculture which is responsible for state research, development, and innovation in the field of agriculture in Indonesia.
Methyl isobutyl ketone (MIBK, 4-methylpentan-2-one) is an organic compound with the condensed chemical formula (CH 3) 2 CHCH 2 C(O)CH 3. This ketone is a colourless liquid that is used as a solvent for gums, resins, paints, varnishes, lacquers, and nitrocellulose.
Isovaleric acid, also known as 3-methylbutanoic acid or β-methylbutyric acid, is a branched-chain alkyl carboxylic acid with the chemical formula (CH 3) 2 CHCH 2 CO 2 H. It is classified as a short-chain fatty acid. Like other low-molecular-weight carboxylic acids, it has an unpleasant odor. The compound occurs naturally and can be found in ...
1. Synthesis of methylcholanthrene. First 3-MC was synthesized with the method of reference. [5] Later the synthesis of the compound was improved. [6] [7] The synthesis of 3-MC consists of a few steps, visualized in figure 1; the first step is the key to success for the synthesis. 4-methylindanone (1) reacts in condensation with lithium salt of N,N-diethyl-1-naphthamide (2).