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Category Archives: Chemistry

VandePol Microbiology BHCC Chapter 2 part 1- Chemistry for Microbiology – Video

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VandePol Microbiology BHCC Chapter 2 part 1- Chemistry for Microbiology
Chapter 2 part 1-Chemistry for Microbiology- elements, atoms, subatomic particles, covalent/ionic/hydrogen bonds, electronegativity, polarity, water, acids, bases, pH, etc. Recorded June 7,...

By: Dirk VandePol

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VandePol Microbiology BHCC Chapter 2 part 1- Chemistry for Microbiology - Video

Mapping rainforest chemistry from the air reveals 36 types of forest – Science News

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To some forest creatures, a tree is a home. To scientists, its a beacon. A new way of mapping forests from the air by measuring chemical signatures of the tree canopy is revealing previously unrecognized biodiversity.

The swath of tropical forest covering the Peruvian Andes Mountains and the Amazon basin is one of the most biodiverse places on Earth. But its such a wild and remote region that variation within the forest is hard to spot.

If you look in Google Earth, it just looks like a big green blanket, says study coauthor Greg Asner, an ecologist at the Carnegie Institution for Science in Stanford, Calif.

Up close, its a different story. Each tree species has a distinctive set of chemical traits, such as levels of nutrients like nitrogen and phosphorus in the leaves. Collectively, those characteristics can reveal a lot about the makeup of the forest.

Measuring chemical traits found in the forest canopy allowed researchers to classify the Peruvian rainforest into 36 different types of forest.

To peek beneath the green blanket, Asner and colleagues divided 76 million hectares of forest into 100-kilometer squares. The researchers measured levels of water, nitrogen, phosphorus and calcium in the trees leaves via aircraft by measuring the wavelengths of light reflected by the forest canopy, taking samples from small areas of each square. They also mapped leaf levels of lignins and polyphenols, two chemicals used for defense. Using that data, the scientists identified 36 unique types of forest a much more nuanced view than the broad categories currently used for classification, the researchers report January 27 in Science. They parceled those highly specific forest types into six groups that roughly aligned with the countrys topography and geography.

Parsing out these differences in forests at such a fine scale is important for guiding conservation efforts, Asner says. A particular spot might appear at a distance to be the same as its surroundings but may actually contain species found nowhere else.

The team is now carrying out similar studies in northern Borneo and Ecuador. Eventually the researchers hope to boost their sensors into orbit to map biodiversity around the globe.

Researchers divided the 36 highly specific types of forest into six general groups. Those groups roughly fit the topography and geography of the country.

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Mapping rainforest chemistry from the air reveals 36 types of forest - Science News

Detroit Lions’ offensive line needs time to build chemistry – Sidelion Report

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If the New York Jets are known for anything, its for having a dominate defensive line. The Jets have dedicated three first round picks to that positional group since 2011. So is it any wonder why the Detroit Lions offensive line looked a bit shaky against them Saturday night?

Yet, the Lions still defeated the Jets, 16-6, in the second preseason contest for both teams. With the majority of those points being scored while the first team offense was in the game, Detroit proved they can be productive regardless of the pressure New York brought. And thats a point Lions starting right guard T.J. Lang made following the game.

I thought we did some good things there in the first quarter when Matt [Stafford] was in, Lang told ESPN.com. Obviously, we got to protect the quarterback a little bit better, but [we] scored 10 points in one quarter, so not a bad job for us.

The Lions second preseason contest was the debut for Lang, who has been recovering from offseason hip surgery. The former Green Bay Packer was acquired in free agency this year along with Baltimore standout Ricky Wagner at right tackle. Their addition was expected to solidify Detroits O-line.

But chemistry is important when building an offensive line. And the Lions newest additions have had precious little time to build any.

Detroit will have at least three new starters along their offensive line this season. Lang and Wagner on the right side of the line and former first round bust Greg Robinson at left tackle. The latter was acquired in a June trade after 2016 first round selection Taylor Decker suffered a shoulder injury that could have him sidelined until December.

Due to injuries, Detroits offensive line has had precious little time to build some much needed chemistry. With Lang now back in the fold, and the rest of training camp and the preseason to work it out, fans should be encouraged by what they saw from the Lions on Saturday.

The Detroit Lions offensive line proved they could get the job done when it counted against a tough New York Jets defense in the trenches. And it should only get better from here on out.

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Detroit Lions' offensive line needs time to build chemistry - Sidelion Report

Department of Chemistry

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As some of our most beloved faculty and staff retired this summer, YSU STEM wants to take the time to acknowledge those who have been exceptional. This is the second part of this two-part series, where we highlight two of our faculty as they continue on to the next chapter of their lives.

This summer, professor of physical chemistry Howard Mettee retired after 47 years of service to the YSU community.

I came in the fall of 1968, one year after the private Youngstown University became Youngstown State University, Dr. Mettee said. I came because there was a move at the same time to start a graduate Masters Program. For scientists like chemists, this meant educating students not only in the facts and theories of chemistry, but now conducting publishable experiments with student participation, and attempting to contribute to the growing knowledge bank of a vital science.

After being on staff for about two years, faculty size doubled, with the added faculty all being required to have a Ph.D. For existing faculty, the opportunity was there for them to hone their research skills.

This meant that as the newest addition to the State of Ohios network of 11 research universities, we could add a 12th one, YSU, and this opened the door to our faculty and students to operate in a more competitive league with our sister universities, Mettee said. At that time I figured wed have a Ph.D. program or two in the next 10 years or so. This was opportunity knocking.

Soon, Mettee and his students began research programs in as many directions they could handle.

I was able to get a Research Corporation grant to measure absolute fluorescence yields, something I started in on a 2 year postdoc at UT in Austin with W. Albert Noyes, one of the fathers of photochemistry, Mettee said. I also started a program measuring the intensity of chemiluminescence of NaCl flames as a way of seeing how vibrational energy might be transferred between hot molecules produced, because chemistry begins with energy transfer. We also started following some rates of chlorination experiments of alcohols by infrared spectroscopy, a field I grew up in in graduate school in Calgary, Alberta. We managed to publish some papers in the SO2 fluorescence and phosphorescence field, and in the hot molecule area of the NaCl chemiluminescent flames, which followed some of Michael Polanyis work and that of Kitigawa, Lee and Herschfeld at Harvard. These were exciting experiments for me, a delicious combination of thermodynamics, kinetics and spectroscopy, the three pillars of physical chemistry which tries to explain why chemistry happens at all.

As a tenured professor, Mettee climbed the academic ranks at YSU, although he was turned down the first time he tried to go from an associate to a full professor.

If youre tenured you get more chances to advance over these hurdles, so that part is more critical. You have to show some kind of promise that you can do something, both to yourself and your colleagues, in the three areas of teaching, research and university service, Mettee said. In the end, you define yourself professionally in these avenues, and I was most proud of really two things one, which combined both service and research, and the other, one that opened up the world of international science to me through working with professional colleagues in Russia under a Fulbright Scholarship.

In 1979 Dr. Mettee took his family to Cal Berkeley, where he worked with Nobel Laureate Melvin Calvin for a year.

Not only was this combining service and scholarship, but the papers produced with Melvin probably had a lot to do with my getting promoted to Full Professor a year or two later, Mettee said. Those were all proud days for me.

In 1990, Dr. Mettee started his international work with Russia, and in 1997 he taught biotechnology at St. Petersburg Forest Technical University for a year. Later, he received a joint grant from the US Civilian Research and Development and Russian Federation Bureau of Research to study pyrolitic oils as a biofuel. In 2010, this university honored his service by giving him an Honorary Doctorate.

It is very hard for me to pick which one of these moments getting and taking a great sabbatical, and having Melvin come to YSU, or, working with my Russian colleagues and being honored by them for our joint efforts I see them as intertwined and core accomplishments that made my professional life at YSU which by the way, I hope isnt over yet.

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Department of Chemistry

FIFA 15 Engleski tim od 70000 novcica [Chemistry 100] [Srpski Gameplay] SerbianGamesBL – Video

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FIFA 15 Engleski tim od 70000 novcica [Chemistry 100] [Srpski Gameplay] SerbianGamesBL - Video


  1. Chemistry