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Finally, as the digestive canal is a complex system, a series of separate chemical laboratories, I cut the connections between them in order to investigate the course of phenomena in each particular laboratory; thus I resolved the digestive canal into several separate parts.
There is also a marked global trend towards sustainable agriculture, building on traditional methods which use fewer chemical inputs, carefully manage soil and water resources, and work hand-in-hand with nature.
Moreover, the abundance of chemical compounds and their importance in daily life hindered the chemist from investigating the question, in what does the individuality of the atoms of different elements consist.
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.
There is no one area of chemical engineering that specifically helped me in my career as an astronaut, it was more the general education in engineering. Also, it was a very difficult and rigorous course. So, it made me strong and resourceful.
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.
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.
Although every step must be taken to protect against a chemical or biological attack in America, our nation would survive the use of those weapons as we did when anthrax was mailed to our Capitol and other targets.
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.
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.
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.
It has long been known that the chemical atomic weight of hydrogen was greater than one-quarter of that of helium, but so long as fractional weights were general there was no particular need to explain this fact, nor could any definite conclusions be drawn from it.
Francis William Aston
There's no doubt that there's certain songs and arrangements of music that release a chemical reaction in my brain. This sounds a little goofy, but I really believe that. It's such a euphoric experience that I sort of want to chase that experience as often as possible.
Football tactics are rapidly becoming as complicated as the chemical formula for splitting the atom.
Life evolved under conditions of light and darkness, light and then darkness. And so plants and animals developed their own internal clocks so that they would be ready for these changes in light. These are chemical clocks, and they're found in every known being that has two or more cells and in some that only have one cell.
While I thought myself employed only in forming a nomenclature, and while I proposed to myself nothing more than to improve the chemical language, my work transformed itself by degrees, without my being able to prevent it, into a treatise upon the Elements of Chemistry.
In 1961, the United States began chemical warfare in Vietnam, South Vietnam, chemical warfare to destroy crops and livestock. That went on for seven years. The level of poison - they used the most extreme carcinogen known: dioxin. And this went on for years.
Much of what we now consider 'personality' will be explained away as structural and chemical functions of the brain.
The threat from Saddam Hussein and weapons of mass destruction - chemical, biological, potentially nuclear weapons capability - that threat is real.
Fire is one of my temperaments. It is behind all my work... Fire is a chemical presence.
No one knows what the nongenetic causes of individuality are. Perhaps people are shaped by modifications of genes that take place after conception, or by haphazard fluctuations in the chemical soup in the womb or the wiring up of the brain or the expression of the genes themselves.
Under Saddam Hussein, the nation of Iraq possessed and used chemical weapons against both their own Kurdish population and Iranian military forces.
Charles B. Rangel
The world has placed chemical, biological and nuclear weapons in a separate category because their use constitutes a crime against all humanity.
Charles B. Rangel
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.
I believe that the topic of chemical weapons is critically important for international peace and security, and I take note of the ongoing debate over what course of action should be taken by the international community. All those actions should be taken within the framework of the U.N. Charter, as a matter of principle.
C. S. Lewis
Martin Luther King, Jr.
Leonardo da Vinci
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