HOME >> BIOLOGY >> NEWS
Computers use Darwinian model to 'evolve' fuel additives

WEST LAFAYETTE, Ind. -- Chemical engineers at Purdue University have developed and demonstrated how a computerized system that mimics evolution can discover new gasoline additives for better engine performance.

The engineers developed "genetic" algorithms -- or computer instructions -- that adapt Charles Darwin's evolutionary model to combine and recombine chemical components until the "fittest" fuel additives emerge. Each additive is made of three sections: a head, linker and tail. But there are about 20 distinct kinds of heads, linkers and tails that can be combined differently to make a nearly endless variety of compounds.

"Based on the combinations, they can have completely different properties," says Venkat Venkatasubramanian, a professor of chemical engineering. The numerous combinations can be likened to biological diversity: the genetic blueprints for all life forms are made of the same four chemical building blocks of DNA, and only subtle variations in gene sequences spell the difference between monkeys and humans.

Rather than trying to study the properties of every possible compound, the evolutionary method naturally selects the best-performing additives.

"We randomly create hundreds of molecules from these heads and tails at the beginning," Venkatasubramanian says. The system can then predict how well the molecules will work by evaluating their structures.

Only the best candidates are kept, and they continue to breed. Their head, linker and tail sections are recombined, and so on, until a final "generation" of highest-performing additives is reached.

Fuel additives are needed to reduce deposits, left over from the combustion of gasoline, that build up on engine valves. The deposits eventually affect the performance of the valves, hindering engine efficiency. Additives latch onto waste material, preventing it from settling on the surfaces of valves.

The work was detailed in a poster presentati
'"/>

Contact: Emil Venere
emil_venere@uns.purdue.edu
765-494-4709
Purdue University
21-Jul-1999


Page: 1 2

Related biology news :

1. 20 May AAAS lecture: Computers that Respond to Human Emotion
2. Computers help veterinarians diagnosis pets with rare diseases
3. Computers to help doctors identify rare diseases
4. Computers have had dramatic impact on chemistry
5. Molecular Computers? Munich/UD Researchers Report First Glimpse Of Artificial Molecule In Action
6. Computers, GIS Help Prevent Ground Water Contamination
7. Clusters, Computers And The Human Brain
8. Binary enzyme created by TSRI scientists demonstrates Darwinian evolution at its simplest
9. New cellular evolution theory rejects Darwinian assumptions
10. Darwinian evolution of reproductive proteins in mammals
11. Molecular motor implicated in tissue remodeling

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/21/2020)... ... August 20, 2020 , ... ... Movahhed , a Clinical Operations executive with expertise in clinical trial planning and ... firm as an Expert Consultant. Throughout his career, Mr. Movahhed has helped design ...
(Date:8/7/2020)... , ... August 06, 2020 , ... ... participate in the prestigious National STEM Scholar Program, a unique professional development program ... and project support for middle school science teachers nationwide. , Created in partnership ...
(Date:7/31/2020)... ... July 30, 2020 , ... Justin Zamirowski ... with a near term focus on Type 2 diabetes and associated comorbidities. , ... multiple therapeutic areas and classes. As Chief Commercial Officer, Justin will lead ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... July 29, 2020 , ... ... launch of its new tagline, “BUILDING FOR LIFE.” The adoption of this taglines ... the globe, requiring fast track capacity to provide patients with urgently needed vaccines ...
(Date:7/31/2020)... ... 2020 , ... eSource has long been touted as the solution to high ... eSource, the reasons it did not take off as quickly as people initially expected, ... is moving towards capturing data electronically for clinical trials and then repurposing it for ...
(Date:7/18/2020)... ... 16, 2020 , ... After research model surgery and catheter implantation, the long ... only the beginning of a successful study, while protecting and accessing the catheter or ... Head of Surgery from Envigo in a live webinar on ...
(Date:7/10/2020)... (PRWEB) , ... July 08, 2020 , ... ... services and products, announces a significant expansion of laboratory operations through its ... for agencies implementing testing programs. , Bode-CARES provides a turnkey ...
Breaking Biology Technology:
Cached News: