Chemical movies

Chan, K.L.A. et al. (2011) Generation of chemical movies FT-IR spectroscopic imaging of segmented flows. Anal Chem., 83 (9), 3606-3609. 

The events that happen to an atom in a chemical reaction are on a time scale of approximately 1 femtosecond (1 fs = 10 ",5 s), the time that it takes for a bond to stretch or bend and, perhaps, break. If we could follow atoms on that time scale, we could make a movie of the changes in molecules as they take part in a chemical reaction. The new field of femto-cbemistry, the study of very fast chemical processes, is bringing us closer to realizing that dream. Lasers can emit very intense but short pulses of electromagnetic radiation, and so they can be used to study processes on very short time scales. 

During the last three decades, peroxo compounds of early transition metals (TMs) in their highest oxidation state, like TiIV, Vv, MoVI, WV1, and Revn, attracted much interest due to their activity in oxygen transfer processes which are important for many chemical and biological applications. Olefin epoxidation is of particular significance since epoxides are key starting compounds for a large variety of chemicals and polymers [1]. Yet, details of the mechanism of olefin epoxidation by TM peroxides are still under discussion. 

In the first set of experiments, the water vessels had rusted bottoms. Of the 21 tests, 14 produced explosions, but no correlation of explosion probability could be deduced. It was reported that, in all tests, molten aluminum reached the bottom of the vessel. High-speed movies showed that the entire explosion sequence between the first visible disturbance in the system to a full-scale chemical reaction was very rapid (on the order of 600 /Ltsec). Note that the word chemical was used in the quote. Lemmon suggests that chemical reactions play a key role in the explosion phenomenon, particularly for violent incidents. The proof that chemical reactions are important stems from the finding that strong explosions produced light and, also, limited spectrographic data indicated local temperatures in excess of 3000 K. The emphasis on chemical reactions was not stressed in the work of other investigators. 

We worked hard, but we also found time for fun. We had picnics and barbecues where our families ate hot dogs, played softball, and hurled Frisbees. Phil Kysor made a home movie of one of these gatherings, proving statistically, to a high level of significance, that chemical warfare research did not inhibit playfulness. Rather, it significantly elevated the esprit de corps index. 

The popular movie Erin Brockovich, although focusing on the power industry, is an example of how the popular media can simplify the public s perception of chemical exposure. In Erin Brockovich the chemical of concern was hexavalent chromium, Cr +. Hexavalent chromium is listed as a carcinogen by EPA, but complicated questions dealing with exposure (drinking, inhalation, absorption through skin), toxicity levels, and specific health effects were lost in Hollywood s version. 

Given the fact that chemical substances can make you depressed (through the influence these substances exert on the brain), the consistent avoidance of chemical substances is a big step forward on the path to happiness It s easier to feel contented in a healthy body. Allow yourself to be inspired by good spiritual books on this subject and, for example, seek out TV programs or movies that portray people who, despite... 

This is a very moving film about a 17-year-old boy in isolation. He can only receive guests while wearing a helmet with an air purification system. Ever since childhood he has had to wear an air purification device on his back. At home, he makes use of various air purification devices and always carries around a hose which supplies purified air. He has not been outside in more than eight years. He has DNA deficiencies and his father worked with chemical substances, which according to the movie accounts for this boy s disorders. 

I was able to relate very strongly to this movie, among other things due to the use of the helmet. My grandfather was a painter and thus worked with many solvents and other chemical substances. This may have produced genetic changes in his children. The movie made me realize once more that MCS is a slow, steady, inevitable process. 

Exposed is a beautiful movie (40 minutes long) about an American MCS patient. The protagonist, a professional dancer, often filmed herself throughout her life. She kept doing so when she developed MCS, and thereby documented on tape very intense emotions, thoughts out loud, and so on. Some moments were very moving and touched me deeply. The filmmaker intersperses the patient s own recordings with old commercials about chemicals, interviews, and other material. 

This is a very good Australian film about MCS and the environmental consequences of countless untested, potentially toxic chemical substances circulating in our surroundings every day. We are involved in a massive and dangerous experiment. How can we know for sure that our bodies can handle all this The story about the canaries in the mine also features in this movie. 

This is a multifaceted, moving film, giving voice to patients, doctors and experts (including Dr. Rea). It also follows a man as he is tested in clinic similar to Dr. Rea s. The movie shows his reactions to chemical substances. 

The consequences cannot yet be comprehended and will keep affecting lives for decades to come, especially because there are still many toxic substances in the ventilation systems of the buildings in Manhattan. Nothing at all has been done about this. MCS comes into view halfway through the movie, because all these people have developed severe health problems and sensitivities to chemical substances. Their lives are forever marked, and a number of people have died as a result of being exposed to these chemical substances. 

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