astronomy

Hans Westerhoff

Hans Westerhoff 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 Hans Westerhoff rather than just read about it. In short: Hans Victor Westerhoff (born 14 January 1953) is a Dutch biologist and biochemist who is professor of synthetic systems biology at the University of Amsterdam and AstraZeneca professor of systems biology at the University of Manchester. Currently he is a Chair of AstraZeneca and a director of the Manchester Centre for Integrative Systems Biology.

Key takeaways

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

Reference excerpt

Hans Victor Westerhoff (born 14 January 1953) is a Dutch biologist and biochemist who is professor of synthetic systems biology at the University of Amsterdam and AstraZeneca professor of systems biology at the University of Manchester. Currently he is a Chair of AstraZeneca and a director of the Manchester Centre for Integrative Systems Biology.

Career Westerhoff was born in Amsterdam, Netherlands. He was educated at the University of Amsterdam where he was awarded a PhD in 1983 for investigations of non-equilibrium thermodynamics and the control of biological thermodynamics supervised by Karel van Dam. In 1996 he succeeded Ad Stouthamer as professor of microbiology at the Vrije Universiteit Amsterdam.

Research At the beginning of his career Westerhoff worked in the area of non-equilibrium thermodynamics in relation to biological energy transduction. His work on this topic led to a book written with Karel Van Dam. After being a coauthor of one of the first experimental papers to stimulate interest in metabolic control analysis and participating in the group that proposed a harmonized terminology, Westerhoff moved progressively towards working on multi-enzyme systems as his major activity, starting with an analysis of the effect of enzyme activity on metabolite concentrations. He published many papers in this area, of which one may note an analysis of the control of regulatory cascades, analysqis of glycolytic oscilations in yeast, and showing that the in vivo behaviour of Trypanosoma brucei agreed with the kinetic properties of the glycolytic enzymes. Westerhoff and colleagues discovered magainin in the African clawed frog which helps it fight against bacteria. In December 1996 he and his group discovered a nitric-oxide reductase of Paracoccus denitrificans. In conjunction with many other workers Westerhoff used a community approach to construct a consensus yeast metabolic network and subsequently applied the same approach to human metabolism.

References

Illustrations

Worked examples

Example 1 — a first encounter with Hans Westerhoff

Start with the simplest possible case. Write down what Hans Westerhoff 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 Hans Westerhoff 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 Hans Westerhoff 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 Hans Westerhoff

In research: Hans Westerhoff 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 Hans Westerhoff 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: Hans Westerhoff is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1953 births, Academic staff of Vrije Universiteit Amsterdam, Academic staff of the University of Amsterdam, so understanding it makes those chapters shorter.
In everyday life: Look for Hans Westerhoff 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 Hans Westerhoff in 20 minutes

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

Frequently asked questions

What is Hans Westerhoff in simple terms?

Why does Hans Westerhoff 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 Hans Westerhoff?

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 Hans Westerhoff.