Tag Archives: chemistry

Heat of mantle sets height of mid-ocean ridges

By  analyzing the speed of seismic waves generated by earthquakes, scientists have shown that temperature differences deep within Earth’s mantle control the elevation and volcanic activity along mid-ocean ridges, the colossal mountain ranges that line the ocean floor. Recent research sheds new light on how temperature in the depths of the mantle influences the contours of the Earth’s crust.

PROVIDENCE, R.I. [Brown University] — Scientists have shown that temperature differences deep within Earth’s mantle control the elevation and volcanic activity along mid-ocean ridges, the colossal mountain ranges that line the ocean floor. The findings, published April 4 in the journal Science, shed new light on how temperature in the depths of the mantle influences the contours of the Earth’s crust. (more…)

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Can thermodynamics help us better understand human cancers?

When the “war on cancer” was declared with the signing of the National Cancer Act in 1971, identifying potential physical traits, or biomarkers, that would allow doctors to detect the disease early on was a significant goal. To this day, progress in the battle against cancer depends on understanding the underlying causes and molecular mechanisms of the disease.

In a new study, UCLA researchers analyzed the gene-expression profiles of more than 2,000 patients and were able to identify cancer-specific gene signatures for breast, lung, prostate and ovarian cancers. The study applied an innovative approach to gene-array analysis known as “surprisal analysis,” which uses the principles of thermodynamics — the study of the relationship between different forms of energy — to understand cellular processes in cancer. (more…)

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‘Love and Romance’, the way I feel it: Hossam (23)

Q. What is love? How would you define it?

Hossam: I would say ‘love’ is something that has to be from inside from your heart. It doesn’t come out very quickly. People who are falling in love has to get to know each other first, they have to know whether they understand each other, they have to know whether they fit to each other, and these ways we can know whether we fit to each other or not, if we love each other or not. But of course, that needs some time. So that’s how I define it actually.

For me love is not only to be together or to go out. Love is also our relation, we have to love so that we can marry. So that we can take the next step. Not only to have fun and that’s it.

Love doesn’t last long for me because there are always some problems, may be because of me, may be because of her, may be because of her parents or may be because of my parents. So love is sometimes complicated. (more…)

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UCLA chemistry graduate student ready for her Nobel journey

Crystal Valdez selected to meet with 34 laureates at international conference

From the time she was a young girl, Crystal Valdez was fascinated by science. “When I first learned we are composed of cells and that cells are composed of molecules and atoms, I was amazed and wanted to understand how it all works,” the chemistry graduate student recalled.

That curiosity ultimately led her to the laboratory of Anastassia Alexandrova at UCLA, where Valdez has earned a reputation for her research on the design and function of enzymes. (more…)

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Curiosity Rover Nearing Yellowknife Bay

Mars Science Laboratory Mission Status Report

PASADENA, Calif. –– The NASA Mars rover Curiosity drove 63 feet (19 meters) northeastward early Monday, Dec. 10, approaching a step down into a slightly lower area called “Yellowknife Bay,” where researchers intend to choose a rock to drill.

The drive was Curiosity’s fourth consecutive driving day since leaving a site near an outcrop called “Point Lake,” where it arrived last month. These drives totaled 260 feet (79 meters) and brought the mission’s total odometry to 0.37 mile (598 meters). (more…)

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NASA Mars Rover Fully Analyzes First Soil Samples

PASADENA, Calif. – NASA’s Mars Curiosity rover has used its full array of instruments to analyze Martian soil for the first time, and found a complex chemistry within the Martian soil. Water and sulfur and chlorine-containing substances, among other ingredients, showed up in samples Curiosity’s arm delivered to an analytical laboratory inside the rover.

Detection of the substances during this early phase of the mission demonstrates the laboratory’s capability to analyze diverse soil and rock samples over the next two years. Scientists also have been verifying the capabilities of the rover’s instruments. (more…)

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Nearby Super-Earth Likely a Diamond Planet

New research led by Yale University scientists suggests that a rocky planet twice Earth’s size orbiting a nearby star is a diamond planet.

“This is our first glimpse of a rocky world with a fundamentally different chemistry from Earth,” said lead researcher Nikku Madhusudhan, a Yale postdoctoral researcher in physics and astronomy. “The surface of this planet is likely covered in graphite and diamond rather than water and granite.”

The paper reporting the findings has been accepted for publication in the journal Astrophysical Journal Letters. (more…)

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Make Relations that Last Life Long with Online Dating

Dating today is hard. Trying to find someone with common interests while avoiding the nightclub scene can be daunting. It is especially difficult to meet a person who is interested in a long-term relationship and not a one-night stand. Online dating has opened the door of opportunities for many people and has become extremely popular. More couples are connecting via the Internet and sites devoted to creating relationships.

Choosing a Dating Site :

There are so many dating sites available now that it is difficult for individuals to settle on one particular site. One of the best recommendations is to select a site that has a solid reputation and has been around for a while. Sites such as eHarmony, match.com, zoosk, and chemistry.com are only a few of the sites that are available with positive reviews, a large membership, and a good track record. They base their connections on personality traits, chemistry, and finding things in common for a starting point. Those interested can find out who is in their area with similar philosophies and goals in life. Dating sites give a person a starting point and they can search through profiles to narrow down the selection before going out on a date. (more…)

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