astronomy

Liu Ruozhuang

Liu Ruozhuang is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Liu Ruozhuang rather than just read about it. In short: Liu Ruozhuang (Chinese: 刘若庄; 25 May 1925 - 8 October 2020) was a Chinese physical chemist and academician of the Chinese Academy of Sciences (CAS). He was the founder of computational chemistry in China.

Key takeaways

Liu Ruozhuang belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Liu Ruozhuang to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Liu Ruozhuang from memory before moving on to harder problems.

Reference excerpt

Liu Ruozhuang (Chinese: 刘若庄; 25 May 1925 - 8 October 2020) was a Chinese physical chemist and academician of the Chinese Academy of Sciences (CAS). He was the founder of computational chemistry in China.

Biography Liu was born in Beijing, on May 25, 1925. In 1943, he entered Fu Jen Catholic University, majoring in chemistry at the Department of Chemistry. After graduating in 1947, he did his postgraduate work at Peking University. In 1949, he published his first research paper "Modified Troutons Rule" in the Journal of the Chinese Chemical Society. In June 1950, he began to study quantum chemistry under the supervision of Tang Aoqing. In September 1951, he was hired as a lecturer at Peking University and Fu Jen Catholic University. In 1952, after the adjustment of colleges and departments, he taught at Beijing Normal University, where he was promoted to associate professor in September 1956 and to full professor in July 1979. He joined the Jiusan Society in 1956. In 1978, he founded the Laboratory of Quantum Chemistry at Beijing Normal University. He joined the Chinese Communist Party in 1984. He became a visiting professor at the National Autonomous University of Mexico in the following year. He died in Beijing, on October 8, 2020.

Selected papers R. Z. Liu; J. G. Yu (1983). "Theoretical Study of the Effect of Substituents on Electrophilic Addition to Olefins: Ab Initio MO Approach with Energy Decomposition". Int. J. Quantum Chem. 23 (2): 491–495. doi:10.1002/qua.560230219. S. Q. Jin; R. Z. Liu (1984). "Quantum Chemical Study of the Electrophilic Addition Reaction of Iodine to Ethylene". Int. J. Quantum Chem. 25 (4): 699–705. doi:10.1002/qua.560250408. R. Z. Liu (1986). "Quantum Chemical Studies on Reaction Mechanism and Reaction Path". In Smith, V. H.; Schaefer, H. F.; Morokuma, K. (eds.). Applied Quantum Chemistry. pp. 85–91. doi:10.1007/978-94-009-4746-7_7. ISBN 978-94-010-8609-7. J. G. Yu; X. Y. Fu; R. Z. Liu; K. Yamashita; N. Koga; K. Morokuma (1986). "Theoretical Study of Structure and Energies of [HCOO]+ and [COOH]+ and Their Rearrangement". Chem. Phys. Lett. 125 (5–6): 438–442. Bibcode:1986CPL...125..438Y. doi:10.1016/0009-2614(86)87074-9. H. Q. Zhang; Y. H. Huang; R. Z. Liu (1993). "Deformation Potential Approach to the Estimation of Peierls Phase Transition Temperature". Physica Status Solidi B. 178 (1): 151. Bibcode:1993PSSBR.178..151Z. doi:10.1002/pssb.2221780114. R. Z. Liu; S. Y. Ma; Z. H. Li (1994). "Theoretical Study on the Dynamic Properties and State Selected Rate Constants of the Reaction CH(4Σ−)+H2→CH2(3B1)+H". Chem. Phys. Lett. 219 (1–2): 143–150. doi:10.1016/0009-2614(94)00036-0. Z. X. Wang; R. Z. Liu; M. B. Huang; Z. H. Yu (1996). "An ab Initio Study on the Insertion Reactions of CH(X2II) with NH3，H2O and HF". Can. J. Chem. 74 (6): 910–917. doi:10.1139/v96-100. Y. Huang; R. Z. Liu (1997). "Investigation of the Change in Band Structure of a Carbon Nanotube Due to a Distortion Keeping the Initial Translational Symmetry". Chem. Phys. Lett. 268 (5): 364. Bibcode:1997CPL...268..365H. doi:10.1016/S0009-2614(97)00227-3. Li, Y.; Huang, Y.; Du, Shixuan; Liu, Ruozhuang (2001). "Structures and stabilities of C60-rings". Chemical Physics Letters. 335 (5–6): 524–532. Bibcode:2001CPL...335..524L. doi:10.1016/S0009-2614(01)00064-1.

Honours and awards 1982 State Natural Science Award (First Class) 1989 State Natural Science Award (Third Class) 1999 Member of the Chinese Academy of Sciences (CAS)

References

Worked examples

Example 1 — a first encounter with Liu Ruozhuang

Start with the simplest possible case. Write down what Liu Ruozhuang claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Liu Ruozhuang before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Liu Ruozhuang ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Liu Ruozhuang

In research: Liu Ruozhuang appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Liu Ruozhuang in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Liu Ruozhuang is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1925 births, 2020 deaths, Academic staff of Beijing Normal University, so understanding it makes those chapters shorter.
In everyday life: Look for Liu Ruozhuang outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Liu Ruozhuang in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Liu Ruozhuang means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Liu Ruozhuang out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Liu Ruozhuang in simple terms?

Why does Liu Ruozhuang matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Liu Ruozhuang?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Liu Ruozhuang.