Quote of the Day
In the first quarter of the nineteenth century the experimental proof for the interdependence of the composition and properties of chemical compounds resulted in the theory that they are mutually related, so that like composition governs like properties, and conversely.
Nowadays, however, we recognize that simultaneously with the typical case of a chemical reaction a typical case of catalytic effect had been studied which constitutes a limiting case.
The development of a rational view of the nature of catalysis was thus absolutely dependent on the creation of the concept of the rate of chemical reaction.
The distinction between the old and the new formulations consisting in the incorporation of the concept of the rate of chemical reactions is so great that it immediately asserted itself in the objective development of catalysis.
The well-known fact that the form of a specific substance, e.g. water, and hence its properties can alter without a change in composition was disposed of by the formal view that a physical, not a chemical, process was involved.
And they will tell you unequivocally that if we have a chemical or biological attack or a nuclear attack anywhere in this country, they are unprepared to deal with it today, and that is of high urgency.
Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near the speed of light we will need a new energy source and a new propellant. Nuclear fission is not an option.
I think it makes people in the Pentagon kind of nervous to know that chemical agents and environmental factors could cause so much damage in terms of what may happen in the future.
The relationship between 'My Chemical Romance' and Michael Pedicone is over. He was caught red-handed stealing from the band and confessed to police after our show last night in Auburn, Washington. We are heartbroken and sick to our stomachs over this entire situation.
There's another issue here - and I have some limits as to what I can say - but there's some real question as to the viability of the chemical masks, the protective gear used by our soldiers.
What we know from World War I is that some of our troops had acute symptoms of exposure to chemicals, had bad health and died because of chemical exposure in World War I.
In teaching, I wanted to offer a general pharmacology course based on chemical principles, biochemical classification and mathematical modelling. In the event I achieved neither of my ambitions.
James W. Black
Success is little more than a chemical compound of man with moment.
I'm pleased the administration is endorsing the need for legislation dealing with the chemical sector. In the past, the administration's position has been ambiguous.
In the present state of our knowledge, it would be useless to attempt to speculate on the remote cause of the electrical energy... its relation to chemical affinity is, however, sufficiently evident. May it not be identical with it, and an essential property of matter?
In the case of Iraq, notwithstanding the violence there at the moment, the very fact that a hideous regime - responsible for genocide, for the use of chemical and biological weapons, aggression against two neighbors - has been removed in itself is a positive development.
I can't say enough about how I'm against drugs. Be smart, think about it, look at what it does to people, look at how much you have to experience in life and be courageous enough to do everything you want to without that chemical help.
If the Bush Administration cannot ensure Americans that they will be safe from the flu, how will they protect our country against a possible bio-terror or chemical attack? The American people deserve better.
I studied chemical engineering. I was a good student, but these were the hard times of the depression, my scholarship came to an end, and it was necessary to work to supplement the family income.
But the nature of my main work in chemistry can be better represented by more than 280 English publications, of which roughly 200 concern the theory of chemical reactions and related subjects.
This simple idea served to provide information on the geometrical shape of reacting molecules, and I was able to make the role of the frontier orbitals in chemical reactions more distinct through visualization, by drawing their diagrams.
This success led my theoretical group to the chemical reactivity theory, extending more and more widely the range of compound and reactions that were discussed.
I was invited to join the newly established Central Chemical Research Institute of the Hungarian Academy of Sciences in 1954 and was able to establish a small research group in organic chemistry, housed in temporary laboratories of an industrial research institute.
George Andrew Olah
In 1893 I founded a chemical company which I ran until 1899.
Every chemical reaction has a transition state.
Derek Harold Richard Barton
If you own a chemical plant and leak a little benzene, you're in big trouble because everyone knows how carcinogenic it is. But coming out of a tailpipe? The government never does anything about that.
That's not all our crops can do. We are also learning how to transform plants into factories. We can now raise plants that will create enzymes that would otherwise be created in chemical factories.
Football tactics are rapidly becoming as complicated as the chemical formula for splitting the atom.
Through the continued accumulation of detailed and reliable knowledge about elementary reactions, we will be in a better position to understand, predict and control many time-dependent macroscopic chemical processes which are important in nature or to human society.
Yuan T. Lee
Owing to the difficulty of dealing with substances of high molecular weight we are still a long way from having determined the chemical characteristics and the constitution of proteins, which are regarded as the principal con-stituents of living organisms.
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