astronomy

Jozef Schell

Jozef Schell 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 Jozef Schell rather than just read about it. In short: Jozef Stefaan "Jeff", Baron Schell (20 July 1935 – 17 April 2003) was a Belgian molecular biologist. Schell studied zoology and microbiology at the University of Ghent, Belgium.

Key takeaways

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

Reference excerpt

Jozef Stefaan "Jeff", Baron Schell (20 July 1935 – 17 April 2003) was a Belgian molecular biologist. Schell studied zoology and microbiology at the University of Ghent, Belgium. From 1967 to 1995, he worked as a professor at the university. From 1978 to 2000 he was director and head of the Max Planck Institute for Plant Breeding Research (Institut für Züchtungsforschung) at the Max-Planck-Gesellschaft in Cologne, Germany. He received many prizes, among which were the Francqui Prize in 1979, the Wolf Prize in Agriculture in 1990, and the Japan Prize in 1998, which he shared with Marc Van Montagu. He also was appointed Professeur Honoraire, Collège de France, Paris in 1998. He was granted the title of Baron by Baudouin of Belgium. Schell was a pioneer in genetics who focused on the interaction between plants and soil bacteria. Along with his colleague, Marc Van Montagu, Jeff Schell discovered the gene transfer mechanism between Agrobacterium and plants, which resulted in the development of methods to alter Agrobacterium into an efficient delivery system for gene engineering in plants. Besides being a prominent scientist, in 1982 he co-founded, with Marc Van Montagu, the successful biotech company Plant Genetic Systems Inc., now part of Bayer CropScience.

See also Walter Fiers Mary-Dell Chilton Flanders Institute for Biotechnology (VIB)

Selected publications Schell, J; Van Montagu, M (1977). "The Ti-Plasmid of Agrobacterium Tumefaciens, A Natural Vector for the Introduction of NIF Genes in Plants?". Genetic Engineering for Nitrogen Fixation. Basic Life Sciences. Vol. 9. pp. 159–79. doi:10.1007/978-1-4684-0880-5_12. ISBN 978-1-4684-0882-9. PMID 336023. Joos, H; Timmerman, B; Montagu, MV; Schell, J (1983). "Genetic analysis of transfer and stabilization of Agrobacterium DNA in plant cells". The EMBO Journal. 2 (12): 2151–60. doi:10.1002/j.1460-2075.1983.tb01716.x. PMC 555427. PMID 16453483. De Block, M; Herrera-Estrella, L; Van Montagu, M; Schell, J; Zambryski, P (1984). "Expression of foreign genes in regenerated plants and in their progeny". The EMBO Journal. 3 (8): 1681–9. doi:10.1002/j.1460-2075.1984.tb02032.x. PMC 557582. PMID 16453538. Herrera-Estrella, Luis; Depicker, Ann; Van Montagu, Marc; Schell, Jeff (1983). "Expression of chimaeric genes transferred into plant cells using a Ti-plasmid-derived vector". Nature. 303 (5914): 209–13. Bibcode:1983Natur.303..209H. doi:10.1038/303209a0. S2CID 4330119.

References

Illustrations

Worked examples

Example 1 — a first encounter with Jozef Schell

Start with the simplest possible case. Write down what Jozef Schell 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 Jozef Schell 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 Jozef Schell 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 Jozef Schell

In research: Jozef Schell 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 Jozef Schell 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: Jozef Schell is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1935 births, 2003 deaths, Academic staff of Ghent University, so understanding it makes those chapters shorter.
In everyday life: Look for Jozef Schell 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 Jozef Schell in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jozef Schell 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 Jozef Schell out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jozef Schell in simple terms?

Jozef Stefaan "Jeff", Baron Schell (20 July 1935 – 17 April 2003) was a Belgian molecular biologist. Schell studied zoology and microbiology at the University of Ghent, Belgium.

Why does Jozef Schell 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 Jozef Schell?

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 Jozef Schell.