At room temperature, Ethanol is always a liquid. Ethanol has a melting point of 156K and a boiling point of 351K. Ethanol is one of the most active ingredients of all alcoholic drinks. It is also used in making different medicines such as cough syrups, tonics as well as tincture iodine ...
结果1 题目 2 A liquid is thought to be pure ethanol.What is the best way to test its purity? B A burn it completely in oxygen B measure its boiling point C react with ethanoic acid D test with litmus paper 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
To prepare wholemount tissues for immunofluorescence, they were fixed in 4% formalin for 30 min at room temperature, incubated with the primary antibody for 1 h, and washed extensively with PBS and finally stained with the secondary antibody conjugated with the appropriate fluorochrome (Alexa ...
3-Alkoxycarbonyl isoxazolidines 189 reacted with an equimolar amount of NaH at room temperature to afford 3-amino-2(5H)-furanones 191 through rearrangement of the isoxazolidine ring. The process is believed to begin with 3-H proton abstraction favored by the presence of the alkoxycarb...
Reactions were left overnight at room temperature. For the GH2 enzymes, the sequential digest reactions were set up with 150 μL 0.25% furcellaran oligosaccharides that had been predigested with the purified GH129-like enzyme, as described above, and then heat denatured for 10 mins in a...
Seawater samples for 16S rRNA gene analysis were filtered immediately after the retrieval of the Niskin bottles. The filtration was carried out in a temperature-controlled room (2 °C) in the dark and did not exceed 1−1.5 h. Three liters of seawater were filtered onto a 0.22 μm...
After 10 min, the fixation solution was removed, and the plates were washed and dried at room temperature. Subsequently, the cells were stained with crystal violet (0.25 mg/mL) and shaken for 20 min. The plate was then washed and eluted with glacial acetic acid (33 %) and ultrapure ...
Shang N, Zhou X, Feng C, Gao S, Wu Q, Wang C (2017) Synergetic catalysis of NiPd nanoparticles supported on biomass-derived carbon spheres for hydrogen production from ammonia borane at room temperature. Int J Hydrog Energy 42:5733–5740. https://doi.org/10.1016/j.ijhydene.2016.11.192...
Crh proteins catalyze crosslinking of chitin and glucan polymers in fungal cell walls. Here, we show that the BcCrh1 protein from the phytopathogenic fungus Botrytis cinerea acts as a cytoplasmic effector and elicitor of plant defense. BcCrh1 is localize
About 4–5 monoclones ofAgrobacterium(GV3101, WeiDi) carrying the target genes were grown together overnight in liquid LB medium under 30 °C, then were transferred to the new liquid LB medium at a ratio of 1:500 and grown overnight. The cultures were centrifuged at room temperature and ...