Tag Archives: cycle

Small Organisms Could Dramatically Impact World’s Climate

By Guest PostOctober 26, 2012Environment21st century, atmospheric, carbon, carbon dioxide, christopher klausmeier, climate change, colin kremer, cycle, david garrison, diversity, element, elena litchman, equatorial water, evolutionary adaptation, food chain, global climate, impact, level, marine microorganism, michigan, mridul thomas, nitrogen, ocean, ocean floor, organism, phosphorous, photosynthesis, phytoplankton, population, science express, state university, temperature, tropical water, warmer

EAST LANSING, Mich. — Warmer oceans in the future could significantly alter populations of phytoplankton, tiny organisms that could have a major impact on climate change.

In the current issue of Science Express, Michigan State University researchers show that by the end of the 21st century, warmer oceans will cause populations of these marine microorganisms to thrive near the poles and may shrink in equatorial waters. Since phytoplankton play a key role in the food chain and the world’s cycles of carbon, nitrogen, phosphorous and other elements, a drastic drop could have measurable consequences. (more…)

When she says, ‘It’s not you, it’s me,’ it really might be you, UCLA study suggests

By Guest PostOctober 25, 2012Healthbehavior, change, christina larson, cycle, deep voice, dominant behavior, dual mating, evolutionary benefit, fertile period, fertility, genetic makeup, genetic mutation, good gene, hormones, hypothesis, martie haselton, masculine face, masculine feature, masculine tend, monthly cycle, mr sexy, mr stable, offspring, ovulation, ovulation cycle, potential partner, progeny, relationship satisfaction, romantic relationship, sex partner, sexually attractive men, sexually desirable men, sexy, sexy look, ucla, women

Women with stable but not-so-sexy mates become more distant, critical during periods of high fertility

Long after women have chosen Mr. Stable over Mr. Sexy, they struggle unconsciously with the decision, according to a new study by UCLA researchers who look at subtle changes in behavior during ovulation.

At their most fertile period, these women are less likely to feel close to their mates and more likely to find fault with them than women mated to more sexually desirable men, the research shows. (more…)

Easy Guider: Intuitive Visual Control Provides Faster Remote Operation of Robots

By Guest PostOctober 5, 2012Science, Technology2d video, 3d video, ai ping hu, complex computation, control device, cycle, data, electronics, flight, gary mcmurray, georgia tech, gtri, harvey lipkin, hazardous, human guidance, ieee, intuitive, matt marshall, matthew marshall, michael matthews, multi jointed, novel method, operation, operator, remote control, remote robot, research institute, robotic arm, robotic device, robotic system, robots, spatial relationship, target object, technique, time, uncalibrated, video monitor, video technology, visual activation, visual servoing, vs, vs guided

Using a novel method of integrating video technology and familiar control devices, a research team from Georgia Tech and the Georgia Tech Research Institute (GTRI) is developing a technique to simplify remote control of robotic devices.

The researchers’ aim is to enhance a human operator’s ability to perform precise tasks using a multi-jointed robotic device such as an articulated mechanical arm. The new approach has been shown to be easier and faster than older methods, especially when the robot is controlled by an operator who is watching it in a video monitor. (more…)

Scientists Dramatically Reduce Plaque-Forming Substances in Mice with Alzheimer’s Disease

By Guest PostSeptember 8, 2012Sciencea beta peptides, ajaya kunwar, alzheimer's disease, amp kinase, ampk, amyloid beta, amyloid precursor protein, app, chemical reaction, chhavy tep, cognitive decline, compound, cycle, dong ju park, endoplasmic reticulum, enzyme, er, fat, genetic manipulation, glucose, jae cheon ryu, jnk3, metabolism, mice, mouse brain, mtor pathway, ohio state university, proteins, reduction, rna expression, sung ok yoon, symptom, tae hee lim, type 2 diabetes, yong jae shin

COLUMBUS, Ohio – Scientists have found that eliminating an enzyme from mice with symptoms of Alzheimer’s disease leads to a 90 percent reduction in the compounds responsible for formation of the plaques linked to Alzheimer’s disease.

That is the most dramatic reduction in this compound reported to date in published research.

The compounds are amyloid beta, or A-beta peptides; peptides are proteins, but are shorter in length. When A-beta peptides accumulate in excessive amounts in the brain, they can form plaques, which are a hallmark of Alzheimer’s disease. (more…)

Clean Energy From CO2?

By Guest PostMay 23, 2012Environmentcarbon dioxide, cpg, crust, cycle, deane morrison, earth, electricity, fossil fuels, geologic formation, geothermal heat, geothermal systems, global warming, green future, heat mining company, hydrofracking, impermeable rock, international space station, jimmy randolph, martin saar, mobility, renewable energy, supercritical, thomas kuehn, underground storage, united states, university of minnesota, villain co2

Global warming villain CO₂ may have a surprisingly green future

The next frontier in the search for renewable energy lies less than two miles from where you are now.

Unless you’re reading this on the International Space Station.

Geothermal heat a mile or two deep in Earth’s crust is a potential source of energy that could be tapped by an unlikely carrier: carbon dioxide (CO₂), the central villain in global warming. That energy, unlike solar and wind, could be easily turned on and off without the intermediate step of being stored in a battery. And it would be constant and reliable. (more…)

Study Shows Link Between Prepregnancy Obesity and Lower Child Test Scores

By Guest PostMay 17, 2012Healthbmi, body mass index, cell growth, child test, childhood cognition, cognitive function, cognitive skill, cycle, dataset, fetal brain, link, muriel fang, obese, ohio state university, pamela salsberry, patricia reagan, post birth conditions, pregnancy, prepregnancy obesity, rika tanda, risk factor, ruth l kirschstein, sex, socioeconomic data, synapses, two point reduction

COLUMBUS, Ohio – Women who are obese before they become pregnant are at higher risk of having children with lower cognitive function – as measured by math and reading tests taken between ages 5 to 7 years – than are mothers with a healthy prepregnancy weight, new research suggests.

In this large observational study, prepregnancy obesity was associated, on average, with a three-point drop in reading scores and a two-point reduction in math scores on a commonly used test of children’s cognitive function. (more…)

Scientists Use PET to Predict Increased Survival in Cancer Patients After First Chemo Cycle

By Guest PostApril 10, 2012Sciencechemotherapy drugs, ct scan, cycle, fdg, fritz eilber, metabolic activity, molecular imaging tools, neoadjuvant chemotherapy, patient, pet scan, soft tissue sarcomas, survival rate, tumor

Researchers from UCLA’s Jonsson Comprehensive Cancer Center have found that by administering a PET scan to individuals with soft-tissue sarcomas after just a single cycle of neoadjuvant chemotherapy, they can predict increased survival in these patients.

Prior research by this multidisciplinary team of physician-scientists had shown that a combined PET/CT scan using a glucose uptake probe called FDG allowed them to determine the pathologic response of patients’ tumors after the first dose of chemotherapy drugs. They then wondered if the patients who showed a significant PET response after the first round of chemotherapy also were surviving longer. (more…)

Charles P. Sonett: the Legacy of a Pioneering Space Scientist

By Guest PostOctober 9, 2011Scienceames magnetic fields explorer, apollo program, arizona board of regents, astronomy, Berkeley, bernhard schmidt, charles chuck p sonett, charles p sonett, charles p sonett space sciences building, chuck, cycle, death valley, desert town, estonian optician, explorer 33 and 35, explorer program, geology, geophysical measurements, george willis ritchey, gerard p kuiper, global climate, henri jacques chrétien, hollywood high school, hungarian parents, j randy jokipii, japanese bombing of pearl harbor, los angeles, lpl, lunar and planetary laboratory, lunar orbiter magnetometer experiment, magnetosphere, michael j drake, pittsburgh, post apollo era, ritchey chrétien telescope, schmidt telescope, solar wind, space race, spacecraft, spacecraft missions, sputnik, stream of charged particles, sun, telescope optics, trona, university of california, us army air forces

*Charles P. Sonett, the first head of the UA’s department of planetary sciences, died at the age of 87. Sonett was involved in spacecraft missions that dramatically advanced our understanding of the solar system and beyond, including the Pioneer Program, the Explorer Program and the Apollo Program.*

Charles “Chuck” P. Sonett, a founding faculty member and the first department head of the University of Arizona’s department of planetary sciences, died on Sept. 30. He was 87.

As a space exploration pioneer, Sonett was involved in numerous spacecraft programs, including the Pioneer Program, the Explorer Program and the Apollo Program – missions that dramatically advanced our understanding of the solar system, its planets and moons and beyond. (more…)