Author Archives: hsauro

New 17 million-digit prime number

Recent news announced the discovery of a new Mersenne prime. What was interest was the response I saw on some of the boards that where reporting this news, for example: “but can someone explain how digging up mersene prime numbers … Continue reading

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Building an Analog Integrator

Something I’ve been wanting to do for a while was is to build a simple analog integrator. Here is my first attempt. I bread-boarded the circuit first to get it working then made it more permanent and stable by soldering … Continue reading

Posted in Electronics, General Science Interest, Systems Theory | Leave a comment

Self-Publishing: A Personal Experience

As some of you may know, a year ago I published my book ‘Enzyme Kinetics for Systems Biology’ and I am about to release the second edition. Next year the hope is to publish another title. Self-publishing my own book … Continue reading

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Latest Delphi XE3 Update 1

Many of us have been eagerly waiting for the first significant update to Delphi XE3 in the hope that many of the bugs in FM2 will be fixed. Alas no. Of the 63 bugs report on the public QC system, … Continue reading

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Why Linux?

I have been told many times of the virtues of Linux and decided after some requests to port our simulation back end (roadRunner, http://code.google.com/p/roadrunnerlib/) to Linux. Well two months later and we’re still trying to port the code. Quite apart … Continue reading

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LaTeX and Chemistry

I recent had the need to draw some chemical equation in a LaTeX document. In the past I’ve used ChemDraw and loaded the image into my document as a png file. Last time I used ChemDraw was on my old … Continue reading

Posted in Chemistry, General Science Interest, LaTeX, Programming | 2 Comments

Electronic Gene Circuit

The figure below shows a single unit from the Microryza gene network circuit project. The circuit models a transcription factor that acts as a repressor. The output from the circuit is the level of protein which can be fed into … Continue reading

Posted in Electronics, Enzyme Kinetics, General Science Interest, Modeling, Molecular Biology, Synthetic Biology, Systems Theory | Leave a comment

Why is C++ so popular?

I’ve never quite understand the attraction of C++ given its (growing) complexity and the many ways to get into trouble. Here is another reason, its verbosity. The following is a fragment of code from an open source library which will … Continue reading

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A mini-supercomputer for the rest of us

I recently contributed to the kickstarter project, Parallela which I would like to selfishly mention here. This is an interesting project that wants to develop highly cost effective small parallel machines. For example their smallest multi-process machine will cost $99 … Continue reading

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Misconceptions in Metabolism II

A week ago I wrote about some misconceptions in metabolism that arose from a trip to a systems biology workshop in Holland. This week I discovered that Nature is perpetrating similar misconceptions in their News and Views section. I came … Continue reading

Posted in Enzyme Kinetics, General Science Interest, Metabolic Control Analysis, Molecular Biology, Pathways, Systems Theory | Leave a comment