要熟悉流管柱层析法需要适当的练习。此影片将会让从你填充 的适当条件技巧开始、填充及进行管柱层析,甚至用管子做一个微 管柱层析。 It takes considerable practice to master the art of \running a column\. This video will get you started, with tips on picking appropriate conditions, packing and running a column, monitoring separation, and even making a micro-column from a pipet
发现一些薄层分析法更复杂的技巧---剪玻璃TLC板,用火 焰造TLC染色剂点棍,使用TLC染色剂以使点显像。 Discover a few of the more complicatec skills related to thin layer chromatography cutting glass TLC plates, flame-pulling spotters, and using TLC stains to visualize spots
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1.1 Distinctive Properties of Living Systems 1.2 Biomolecules: The Molecules of Life 1.3 A Biomolecular Hierarchy: Simple Molecules Are the Units for Building Complex Structures 1.4 Properties of Biomolecules Reflect Their Fitness to the Living Condition 1.5 Organization and Structure of Cells 1.6 Viruses Are Supramolecular Assemblies Acting as Cell Parasites
Overview: A good 'H NMR sample contains about 10 mg of compound. The solution should contain no solids or paramagnetic impurities. Your deuterated NMR solvent should be free of water,and your NMR spectrum should contain no solvent peaks. Reference: Zubrick page 295 is relatively useful, but you should follow the specifics in this handout Also, keep in mind that we won't be running continuous wave spectrometers, so you should disregard any discussion of them. NMR Solvents:
In common nomenclature most primary amines are named as alkylamines. In systematic nomenclature they are named by adding the suffix –amine to the name of the chain or ring system to which the NH2 group is attached with elision of the final e Primary Amines;
Of the three groups of biopolymers, protein have the most diverse function. Most of its molecular weights are much larger. Their shaps cover a range from the globular protein to the helical coils of a α–keratin. But all proteins have common features. Proteins are polyamides and their monomeric units are about 20 different α-amino acids
III. ANTIMICROBIAL AGENTS USED IN VIVO 体内使用的抗微生物制剂 Selective toxicity选择毒性 Can be used internally可体内使用 Chemotherapeutic agents化学治疗剂 6.6 Synthetic Antimicrobial Drugs 人工合成的抗微生物药物 6.7 Antibiotics: Naturally occurring antimicrobial drugs 抗生素 IV. ANTIMICROBIAL DRUG RESISTANCE AND DRUG DISCOVERY 抗药性与新药研制 6.8 Antimicrobial drug resistance
The nucleic acids, deoxyribonucleic (DNA) and ribonucleic (RNA) , are, respectively , the molecules that preserve hereditary information and that transcribe and translate it in a way that allows the synthesis of all the varied proteins of the cell 25.2 NUCLEOTIDES AND NUCLEOSIDES
