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Guangzhou Petrochemical's precise data helps the safe production of equipment
Time of Update: 2021-08-07
In order to accurately determine the location of the leak, the inspection center immediately sampled and analyzed the circulating water of the heat exchangers of each device in the chemical industry .
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Pesticide multi-residue detection technology
Time of Update: 2021-06-29
(2) In 1963, three scholars such as Mills reported for the first time a single pure acetonitrile extraction method for the detection of organochlorine pesticides and other non-polar pesticide residues in low-fat foods (MOG method).
(13) In 2003, a universal pesticide residue detection sample pretreatment technology that integrates extraction and purification-QuEChERS method was produced .
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The second phase of Total's Zinia project in Angola starts production
Time of Update: 2021-06-07
Zinia Phase 2 project reflects the quality of short-cycle projects in Angola with high return on investment", said Nicolas Terraz, President Africa, Exploration and Production at Total.
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Why is the rose thorny
Time of Update: 2021-05-31
Recently, the plant molecular genetics and adaptation research team of the Kunming Institute of Botany, Chinese Academy of Sciences has cooperated with the Southwest Wildlife Germplasm Bank of China and the Yunnan Academy of Agricultural Sciences to analyze methods and methods such as comparative genomics, molecular genetics and evolutionary biology.
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Falling paint production is not a bad thing
Time of Update: 2021-01-31
According to the author, in April 2014 the national scale of more than paint enterprises 1319, the total amount of paint production of 1.3976 million tons, down 4.95 percent year-on-year, the first negative growth in 13 months.
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Cesium Chloride Purification of T7
Time of Update: 2021-01-25
Centrifuge the lysate at 10,000 rpm for 10 min, Discard the cellular debris, and add 10 grams polyethylene glycol (PEG) m.w. 8000 (10% w/v) to the supernatant.
Gently layer the phage supernatant onto the cesium chloride step gradient.
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Where water-like wood paint is used
Time of Update: 2020-12-07
Furniture as an important object in the home with us, its environmental performance and home environment and family health is closely related to the choice of environmental protection performance of h
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Application Test Research of High Temperature Resistant Epoxy Adhesive in Bonding Layer of Steel Bridge Deck
Time of Update: 2020-10-05
4 Conclusion (1) DLERA has good high temperature shear resistance and pull strength, and can better meet the requirements of asphalt paving and crushing on the mechanical properties of the bonding material in the steel interface at a temperature of 160 degrees C.
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NEJM: Foch Negriamiba - Case Report
Time of Update: 2020-09-30
the patient began receiving an experienced antibiotic treatment for bacterial meningitis; tested the cerebrospinal fluid with Wright-Giemsa chromosomes and found that the nourishing body was consistent with amoeba (figure B).
the patient died five days after treatment for both sexes mycomycin, lyphopine, fluconazole, azithromycin and methafosin.
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Green paint is the future direction of the industry, but the development path is not smooth
Time of Update: 2020-08-25
However, Hong Kong now uses EPA method 24 (EPAMethod24) "Measurement of volatile substance content, water content, density, volume solids and mass solids in surface coatings" to calculate volatile organic compounds.
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Lancet: Study on diarrhoea burden and risk factors in children in low- and middle-income countries
Time of Update: 2020-06-23
In low- and middle-income countries (LMICs), one in ten children under five years of age dies from diarrhoea Diarrhoea morbidity and mortality vary widely between countries, and researchers recently
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Scientists find that synthesizing peptides without amino acids could answer the mystery of the origin of life
Time of Update: 2020-06-09
References: 1, Pierre Canavelli et al., (2019), Peptide ligligation by chemoselective aminonitrile in in water, Nature, https://doi.org/10.1038/s41586-019-1371-4 2 s Origin of life insight: peptides can form without aminos, from https:// original title: refresh the awareness!
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Marketing: coating marketing: who has U-shaped consumption achieved in coating industry
Time of Update: 2020-04-03
Core tip: every change of consumption structure will result in a number of excellent enterprises When the consumption structure is changing from L-shaped to U-shaped, who will become the coatings indu
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General knowledge of coating: construction organization design of elastic jacquard exterior wall coating
Time of Update: 2020-04-03
Key tips: 1 Project overview and application materials 1、 Project Overview: Project address: built-up area: Floor condition: Current situation of external wall: new cement mortar wall Project content:
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Paint knowledge: furniture paint and waterproof paint purchasing skills
Time of Update: 2020-04-03
Key tips: furniture paint selection: 1 Polyester paint is mainly made of polyester resin Unsaturated polyester paint is commonly used for high-end furniture, which is also known as piano paint The cha
