The conclusion part of the paper should reflect the academic views obtained through experiments, observation and research and theoretical analysis. The conclusion should be the final conclusion and overall conclusion of this paper. In other words, the conclusion should be the conclusion of the whole paper, not the conclusion of a local problem or a branch problem, nor the simple repetition of the summary of each paragraph in the paper. The conclusion reflects the author's deeper understanding, which is a new academic general concept and general viewpoint obtained from all the materials of the whole paper through logical analysis processes such as reasoning, judgment and induction. Conclusion should be accurate, complete, clear and concise. This part of the writing content should generally include the following aspects:

1. What does this research show?

Second, what amendments, supplements, developments, confirmations or denials have been made to the previous viewpoints?

Third, the shortcomings or unsolved problems of this study, as well as the possible key points and directions to solve these problems.

The writing requirements of the conclusion part are: strict wording, strict logic and specific words, which are often listed as articles in the order of 1, 2, 3, etc. There is only one explanation, and there is no ambiguity or ambiguity. Don't exaggerate the text, there is room for attention to the content that is not completely determined. Thesis title: Control of polymer composition in the oligomerization of butadiene and acrylonitrile.

The conclusion of this paper is:

1. For the batch polymerization system of butadiene and acrylonitrile with hydrogen peroxide as initiator and ethanol as solvent, it is necessary to control the composition to improve the performance of NBR due to the different polymerization rates of monomers.

2. In this work, the composition of monomers and polymers in the reaction solution can be controlled by adding rapidly consumed monomers into the reaction system.

3. Based on the theory of free radical polymerization, a new calculation method of monomer addition is proposed. The experiment shows that the liquid NBR polymer with uniform composition ratio can be synthesized by this calculation method. This method can be used not only for the synthesis of butyronitrile hydroxyl, but also for other radical binary polymerization reactions.

4. The composition of NBR synthesized by this method is relatively uniform, and the distribution probability of sequence length 1 is as high as 97%.

[Part of this paper was reported in the 29th IUPAC Polymer Symposium (Romania) and published in Applied Chemistry, No.3, 1984]

Finally, it is pointed out that some academic papers, such as medical papers, are not listed separately, but their contents are hidden in the text of the discussion part (usually in the last part, which is also the shortest text part), which is also a feasible treatment method.

For example, there is a natural paragraph at the end of the paper entitled "Clinical significance of measuring the concentration of 25- hydroxyvitamin D3 in blood by competitive protein binding method": This study shows that CPBA method is not only a simple method, but also a sensitive and reliable indicator for observing the deficiency and excess of vitamin D in the body. In fact, this is the conclusion of the full text, and it is a general concept obtained from all the materials in the text through logical thinking processes such as reasoning, judgment and induction.