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1. What method is commonly used for thermogravimetric analysis? Thermogravimetric analysis generally involves placing the sample in an aluminum crucible and weighing it on a balance before and after placing it to obtain the weight of the sample. The purpose of obtaining the weight is to make the sample weight suitable for the highest possible thermogravimetric accuracy. After the sample is placed, the crucible cover and crucible should be pressed together on a dedicated tablet press to prevent the sample from being ejected from the crucible by the thermal decomposition airflow or thermal decomposition jet during the heating process, which may cause non thermal decomposition weight loss in the experiment. The sample crucible is placed in the sample furnace of the thermogravimetric analyzer, and at the same time, a reference sample or an empty crucible without a reference material is placed in the reference furnace. The reference material, such as alumina powder, should also be placed in an aluminum crucible and sealed with a lid. The reference material is a thermally stable substance that has no thermal effect in the measured temperature range. Set parameters such as heating rate and end temperature to start the experiment. Usually it is done automatically. The thermogravimetric analyzer includes weighing equipment and electronic circuits. As the temperature rises and the sample quality changes, the instrument records the data of sample temperature and sample weight in real time, which is called thermogravimetric curve (TG) or differential thermogravimetric curve (DTG) that records the relationship between sample temperature and weight and time (also temperature, because the heating rate is generally constant), becoming a thermogravimetric curve or differential thermogravimetric curve. The thermogravimetric analysis curves of several samples are shown in the attached figure to give you an intuitive understanding. The numbers on the curve represent temperature values. 2. Gong Yuanshis main academic papers and awards
1. Lu Jinwen, Gong Yuanshi, etc one thousand nine hundred and eighty-nine Research on Water saving Irrigation Scheme for Wheat under Limited Water Source in Salinized Soil of Huang Huai Hai Plain See: Proceedings of the International Symposium on the Dynamics of Saline Soil, April October 1989 Nanjing, China 274-284.2. Gong Y. S., Lu J. W., van der Ploeg. 1990. An optimum irrigation scheme for wheat grown on the salt-affected soils of the Huang-Huai-Hai River Plain in China. Trans of 14th ICSS, Vol VI, 137-142.3. Lu Jinwen, Gong Yuanshi, etc one thousand nine hundred and ninety Research on the potential of soil water regulation and utilization See page 57 of the Seventh Five Year Plan for National Science and Technology Research, Research on Agricultural Water Conservation, 397-465.4 Lu Jinwen, Zhang Heping, Wu Haiyang, Gong Yuanshi, etc one thousand nine hundred and ninety-one Dynamic prediction of soil moisture See: Shi Yuanchun et al., Regional Water and Salt Movement Monitoring and Forecasting, Hebei Science and Technology Press 61~99.5. Gong Yuanshi, Lu Jinwen, B. Huwe, etc one thousand nine hundred and ninety-three Estimation of irrigation water demand of main crops in North China Plain Journal of Beijing Agricultural University, 19 (Supplement), 82-91.6 Zhang Fushuo, Zhang Aimin, Gong Yuanshi, etc one thousand nine hundred and ninety-two German Chinese Dictionary of Agriculture Beijing Agricultura