Articles tagged with Field Studies
A three-year data analysis of 175 fields in Illinois, Wisconsin, and Minnesota revealed the most troublesome weeds and their relationships with sweet corn yield. The study identified factors such as interrow cultivation, planting dates, and water supply as key determinants of crop success.
A new study finds that offshore waters off the Chilean coast experienced systematic oxygen depletion during the rapid warming of the Antarctic following the last glacial maximum. The research suggests that climate change may be contributing to outbreaks of hypoxia along the near-shore regions of South America and the Pacific Northwest.
A two-year study found that pine needle mulch outperforms compost mulches in controlling weeds in highbush blueberry crops. The research team recommends continuing to topdress pine needles or similar mulches annually to maintain effectiveness.
A ten-year study found that up to 70% of female alligators remained loyal to their mates, a similarity with bird mating habits. This discovery sheds light on the ancestral mating systems of birds and dinosaurs.
A study on cynomolgus macaques exposed to chronic wasting disease (CWD) shows that they remain healthy after over six years of observation. The findings suggest a potential species barrier against CWD in humans, but more research is needed to confirm this.
A new technique detects HIV early and monitors its development without refrigeration, making it more accessible in sub-Saharan Africa. The study found a strong correlation between viral load values in plasma and dried blood spots, paving the way for a new testing approach.
A new Army study has improved the ability to predict drinking water needs for troops, potentially cutting costs of operations and improving civilian water planning. The study produced formulations that are 58-65% more accurate than the existing Shapiro equation in laboratory settings.
A new study found that consumers are attracted to crowded store zones but are less likely to make a purchase once they arrive. Longer shopping times lead consumers to become more purposeful and focused on specific product categories.
The journal has published a special anniversary issue featuring key articles on multiculturalism, environmentalism, and the impact of media technologies. Podcasts were also produced to stimulate discussion on topics such as electronic games and multi-racial television.
A new study in Journal of Consumer Research uncovers a strategy for releasing consumers from 'regret lock' after missing a sale. By offering alternative sales on similar products, retailers can increase purchase likelihood and market share.
Researchers found that initial questions deplete self-control resources, making consumers more vulnerable to persuasion. This strategy increases donations and compliance with charitable requests.
Researchers found that small habitat patches, when connected in a network, can support species requiring larger habitats and facilitate movement between patches. This approach offers a promising tool for preserving ecological functions in fragmented landscapes.
A new UC Berkeley study reveals that terror warnings could reduce support for Sen. John McCain among moderate voters. The research suggests the war on terror is a growing concern, but economic issues are a priority.
Researchers at Northwestern University found that avatars in virtual worlds respond to social cues, revealing racial biases, similar to real-world behavior. The study employed door-in-the-face and foot-in-the-door techniques to demonstrate the effects of social influence on avatar behavior.
A new study by Debabrata Talukdar found that low-income households pay more for groceries without access to a car. This phenomenon, dubbed the 'ghetto tax,' is largely driven by the higher prices charged at corner stores, which lack competition from larger regional or national chains.
Two scientists call for a large-scale trial of a 'ceiling' on hen harrier numbers in grouse moors to end long-standing conflicts. The proposal aims to find a compromise between conservationists and grouse managers, while also improving the conservation status of harriers.
A study of 900 Vancouver-area teenagers found that physical activity and healthy eating are not strongly linked, contradicting established assumptions. Boys reported more physical activity but a less-healthy diet than girls, while individuals with lower BMI values were no more likely to be physically active.
Researchers found that bats emit exceptionally loud sounds of up to 140 dB SPL to detect small insects in air using echolocation. The study's results showed that the high frequencies emitted by the bats serve as a countermeasure to attenuation, allowing them to effectively hunt despite the limitations of ultrasonic frequencies.
The Tibetan Plateau's rise is now believed to have occurred in stages, with the central part uplifting first at least 40 million years ago. This finding has significant implications for understanding major episodes of global climate change.
A study published in the journal SLEEP found that both insomnia patients and normal sleepers define sleep quality by tiredness upon waking and throughout the day. Individuals with insomnia have more requirements for judging sleep to be of good quality, including a greater need for restful nights and fewer allowed awakenings.
Researchers developed a vaccine that reduces E. coli shedding in beef cattle by 54% and 85%, respectively, in two field studies. The vaccine targets siderophore receptor and porin proteins, allowing bacteria to suffocate without iron consumption.
A new study by the University of Maryland and colleagues found that touch screen voting systems are easy to use and pass voter confidence tests, but voters still make mistakes and need help. The study recommends improving ballot design, training, and educational campaigns to enhance user-friendliness.
A new study from the University of Pennsylvania finds that focusing on specific details can enhance enjoyment and reduce satiation, particularly in cognitive and sensory experiences. By subcategorizing or recognizing distinct aspects of an activity, individuals can maintain interest and pleasure over time.
The Argentine ant's invasive success is attributed to its adaptability and ability to outcompete native ants. As it displaces native species, the ants begin foraging lower on the food chain, exploiting honeydew excretions of aphids and scale insects.
A study published in The Lancet found that fenofibrate reduces the frequency of first laser treatment for macular oedema and proliferative DR by 31% and 30%, respectively. These findings suggest additional mechanisms of benefit beyond lipid-lowering effects, potentially additive to blood glucose and blood pressure control.
The study combines field studies and remote-sensing data to assess the ecological functioning of wetlands in a landscape. The researchers developed statistical models that can predict denitrification potential from easily measurable properties of the soil, helping guide management priorities in a watershed.
A study finds that women who migrate from Bangladesh to the UK during infancy and early childhood reach puberty earlier, are taller, and have higher progesterone levels as adults. This suggests a critical window of time between 0-8 years influences reproductive hormone levels.
The Department of Energy has awarded $27.5 million for two field research studies to investigate contaminated groundwater at the Hanford Site in Washington and a uranium mill tailings site in Colorado. The studies aim to identify new approaches to resolve questions about subsurface contaminant movement.
A study found that warming temperatures since 1981 have caused annual losses of roughly $5 billion for major cereal crops. Global crop yields respond negatively to warmer temperatures, with a 3-5% drop in yield for each 1 degree Fahrenheit increase.
A groundbreaking study by Lisa J. Abendroth and Kristen Diehl found that consumers in limited purchasing situations initially regret non-purchases more than purchases. Over time, purchased items were regretted more if seldom used or of poor quality.
A new study found that mobile home-dwellers in rural areas face numerous challenges, including high-interest loans, social instability, and stigmatization. The researchers recommend policy changes to address these issues, such as reclassifying mobile homes in the tax code to reduce interest rates.
A study published by the American Gastroenterological Association found that obesity is linked to a higher risk of liver failure, particularly in patients who need liver transplants or experience severe complications. Obesity can impair liver regeneration, making obese patients more vulnerable to acute liver failure.
Researchers found that U.S. News rankings particularly impact students with high LSAT scores, with effects strongest for top-ranked schools. Rankings also influence the number of applicants accepted by selective institutions.
Research reveals that plant species in highly diverse ecosystems face reduced fruit production due to inadequate pollination. This lack of pollination hinders the survival and reproduction of plants, posing a significant threat to their extinction.
A new study finds that high levels of pollen limitation in species-rich regions may lead to extinctions due to insufficient pollination. Plant species in these areas often compete intensely for pollinators, resulting in reduced fruit and seed production. This threatens the survival of not only plants but also animals dependent on them.
A recent Penn State study suggests that increasing the truck driver's hours of service beyond 10 hours leads to a significant rise in the risk of crashes. The most concerning increase occurs within the 9th, 10th, and 11th hours of driving.
Researchers found a clear link between mesothelioma and residential proximity to ultramafic rock, the source of naturally occurring asbestos. The odds of developing mesothelioma fell by 6.3 percent for every 10 kilometers from an asbestos source.
A new study published in Biology of Reproduction found that delayed motherhood in mice leads to decreased life expectancy and reduced body weight. The researchers assessed various aspects of reproductive fitness but found no significant deleterious effects on other parameters.
Research by Ensley and Pearson found that parent-child businesses exhibit higher levels of shared strategic cognition and lower conflict compared to familial and non-family teams. This suggests that the long-term relationship between family members may lead to stronger business outcomes.
A US National Science Foundation study has improved forecasts for Midwest thunderstorms, bow echoes, and tornadoes. The Bow Echo and MCV Experiment found that smaller bow echoes are often the highest risk for tornadoes, contradicting the long-held assumption that size equals strength.
A field study by NCAR and NOAA has provided new insights into bow echoes, revealing that smaller storms can be more destructive than larger ones. The BAMEX experiment used aircraft, ground-based storm chasers, and advanced radar technology to collect detailed data on thunderstorms in the Midwest.
Researchers used high-resolution interferometric synthetic aperture radar to analyze data collected between 1992 and 2001 from European Remote Sensing satellites. They found that sliding rates increased by up to 30% during heavy rains, which may be controlled by elevated water pressures in the ground subsurface.
A team of researchers classifies the Park Forest meteorite as an L5 chondrite, a type of stony meteorite. The meteorite showed signs of being highly shocked due to its origin from a large asteroid collision.
Scientists found a significant link between clouds and pollution transport in the Asian-Pacific region. Clouds mask pollutants from spacecraft sensors, leading to underestimated pollution levels.
The American Academy of Ophthalmology has published several new studies on various eye conditions, including amblyopia, glaucoma, and corneal surgery. Researchers have explored the effectiveness of patching regimens for treating severe amblyopia in children and found promising results.
A Cornell University study found city-grown air pollution, particularly ozone, hinders rural tree growth. Contrary to expectations, city trees outperformed their country counterparts in terms of biomass.
A field study by Vanderbilt University and Indiana University found that wild sunflowers already possess some level of resistance to white mold, reducing the need for genetic modification. The study suggested that transgenes may not spread widely through wild populations if they do not confer a reproductive advantage.
Researchers used satellite data to identify environments associated with human risk of hantavirus infection, finding that woody plants dominated high-risk sites. The study provides a way to monitor the environment for infectious disease risks and better understand why outbreaks happen where they do.
A field study in Zimbabwe found that younger women formed partnerships with men 5-10 years older, increasing their risk of HIV-1 infection. Younger women also reported fewer condom uses and more frequent sexual activity, further exacerbating the issue.
Researchers found that treated zeolite filters were effective in removing viruses and bacteria from drinking water, achieving 99% virus removal rates. The study suggests using zeolite filters as a low-cost solution for controlling the spread of diseases through contaminated wells.
A new study by Scripps researchers reveals that tiny marine crustaceans called copepods use cannibalism as a mechanism to limit their population. The study found that egg mortality in copepod species Calanus finmarchicus is directly related to the abundance of females in the population, suggesting a self-regulating mechanism.
Researchers discovered that touching plants can affect insect feeding behavior, with some species experiencing increased leaf area loss and death when visited. The study suggests that future ecological studies should consider the potential effects of researcher interactions on plant biology.
Researchers have found that dual electrical discharges associated with sprite creation can be separated by long intervals due to persistent cloud-to-ground currents. These currents, which can last up to 200 milliseconds, provide enough energy flow for the second burst to trigger the sprite.
A follow-up study of the VEGF in Ischemia for Vascular Angiogenesis (VIVA) trial found that gene therapy did not increase the risk of cancer or adverse events in patients with severe angina. The results showed a lower rate of adverse events in patients receiving the high-dose VEGF, and encouraging reductions in chest pain after one year.
Two Hopkins studies confirm prenatal exposure to normal male hormones dictates male gender identity in genetically male children born with cloacal exstrophy. Most reassigned as females later reassign themselves back to males, exhibiting strong male behaviors and attitudes.
A University at Buffalo professor is using the case-study approach to revolutionize the teaching of science, resulting in improved student attendance and engagement rates. The grant will establish a national center for case study teaching in science, providing faculty with training and resources.
The University of Maryland Medical Center has received a $7.8 million NIH grant to conduct new research into alternative treatments for pain, including acupuncture and herbal remedies. The grant aims to find effective treatments for arthritis and fibromyalgia, which affect millions of Americans.
Recent findings suggest that neurosteroids play a major role in alcohol's effects on the brain by increasing GABA function. Neurosteroids interact with neurotransmitter receptors to alter neurotransmission, producing their effects in a millisecond time frame.
Two prominent entomologists warn that recent studies on genetically engineered crops have distorted the debate, potentially having profound consequences for science and public policy. The experts question the methodology used in these studies, particularly one claiming Bt corn kills monarch butterfly larvae in laboratory tests.
Medicines commonly used to treat epilepsy appear effective in soothing agitation in people with Alzheimer's disease, a symptom affecting nearly all patients. The findings suggest these compounds may be as good as or better than current treatments for agitation, promising relief for families and caregivers.