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Science News Archive 2003


Page 89 of 108

Most young women retain 'traditional' view of family life

A study by sociologists at the University of Bristol found that young women in their 20s and 30s tend to hold traditional views on family life. Many prioritize motherhood and a close relationship with their mothers, even if they have career aspirations. The researchers also identified four distinct career patterns among young adults: '...

Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Scientists' transgenic chicken aids embryo research

Researchers at North Carolina State University have successfully created a line of transgenic chickens carrying a reporter gene that can be easily tracked. This innovation provides a valuable tool for studying embryo development and potentially leads to new insights into birth defects and improvements in human and animal health.

Calcification in heart valve increases risk of heart attack or death

A new study found that calcification in heart valves is independently associated with an increased risk of heart attack and death. After adjusting for known risk factors, the researchers found that individuals with MAC were 50% more likely to develop cardiovascular disease and 60% more likely to die from cardiovascular causes.

Oxygen deficiency is an endocrine disruptor in fish

A new study finds that oxygen deficiency can impair fish reproduction by disrupting endocrine function and reducing fertility rates. Long-term exposure to hypoxia can lead to major declines in fish populations, potentially causing extinction for some species.

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Chemical in soy alters reproductive organs in male rats

Researchers found that genistein exposure during pregnancy and lactation can lead to smaller testes and larger prostates in male offspring, as well as lower testosterone levels and decreased fertility. The study suggests potential long-term detrimental effects on male reproductive development, warranting further investigation.

Study pinpoints regulator of imprinted gene expression

Researchers have identified a critical gene called Eed that regulates epigenetic changes, leading to proper genome imprinting. The study's findings hold significance for understanding human disorders such as cancer, birth defects, and mental retardation.

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Neural development in time and space

Researchers have identified 'transcription factors' that control the time of neural cell generation, surprising discovery given earlier spatial control roles. The findings suggest a link between temporal and spatial control mechanisms in neuronal differentiation.

Fast food and 'the tube': a combo for heart disease risk

A recent study published by the American Heart Association found that eating fast food meals more than twice a week was associated with double the risk of abnormal glucose control and a 50% increase in obesity risk. Additionally, frequent TV viewing habits were linked to increased odds of obesity and abnormal glucose metabolism.

Early miscues cause late problems in model of Marfan syndrome

Scientists have improved understanding of TGF-beta's regulation in Marfan syndrome by studying mice with genetic mutations. They found that blocking TGF-beta activity during development may prevent features of the disorder, including emphysema and aortic rupture.

DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Gene mutation exacerbates eye defect in inherited glaucoma

Researchers discovered that a gene mutation in mice leads to severe glaucoma by disrupting ocular drainage structures. Administering L-DOPA to pregnant mice with the mutation improved pup outcomes, suggesting potential therapeutic benefits.

Washington editor wins national award for encouraging women in chemistry

The American Chemical Society's editor-in-chief, Jacobs, has won a national award for her efforts to encourage women in chemistry careers. Despite complex issues such as family life and career demands, Jacobs continues to advocate for women in the field through publications and public speaking.

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New, more effective option for gene data mining identified

A new method, KL clustering, has been identified as more effective than hierarchical clustering in separating gene expression data into dense clusters. The approach uses a novel measure of similarity to create well-separated clusters, offering insights into gene-gene interactions and biological processes.

Less fit teens more likely to have precursor to diabetes

A study of 289 teenagers found that cardiovascular fitness and lower body fat are independently associated with greater insulin sensitivity. Improving fitness or reducing body fat could protect high-risk children from developing insulin resistance, a precursor to diabetes.

Call for entries: Science writing awards in acoustics

The American Institute of Physics and the Acoustical Society of America offer science writing awards in acoustics. The most recent winners include "Snap, Crackle and Pop" by Bennett Daviss and "Acoustic Surgery" by Shahram Vaezy et al.

Dartmouth researchers put recycling in perspective

A Dartmouth study found that better transportation decisions, such as driving fuel-efficient cars, could save more energy than recycling plastic and aluminum. Researchers used life-cycle analysis to measure the environmental benefits of different activities.

AmScope B120C-5M Compound Microscope

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Identifying depression in preschoolers

Researchers found that preschoolers with depression exhibit symptoms similar to those in older children and adults, including anhedonia, sadness, and low energy. The study also highlighted the importance of identifying and treating depression in young children to prevent impairment of normal development.

Women urged to reduce heart disease risk before menopause

A study by the American Heart Association suggests that women approaching menopause should take steps to lower their heart disease risk. Researchers analyzed data from over 1,300 perimenopausal women and found that many would become eligible for cholesterol-lowering therapy after age 55 if current risk factors are not modified.

Initiative to improve technology transition

The Office of Naval Research will host a venture initiative called the 'wargame,' which aims to improve the technology transition process. The game will examine venture capital decision-making and mechanisms for engaging the venture capital community.

Organic and sustainable foods have more polyphenolics linked to health benefits

Researchers at UC Davis found that organic and sustainably-grown fruits and vegetables contain higher levels of polyphenolics, a type of natural chemical with potential health benefits. The study suggests that the absence of pesticides and fertilizers in sustainable farming practices may lead to increased production of these chemicals.

New study offers clues to how breast cancer spreads

A new study identifies molecular predictors of breast cancer metastasis, including matriptase and HAI-1. The research may lead to a targeted way to treat cancers at risk of spreading, saving women from unnecessary chemotherapy.

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Diabetic vets are frequent users of health care system

A study found that veterans with diabetes spent a significant amount of time in hospital and outpatient services, with nearly 40% hospitalized one or more times per year. The patients faced a high risk of dying within a given year, with approximately 6% at risk of mortality.

Johns Hopkins scientists create forgetful mouse

Researchers genetically altered a protein to prevent phosphorylation, resulting in mice that could learn but not remember spatial locations. This discovery sheds light on the role of neuronal plasticity in learning and memory.

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Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

Anxiety poorly managed in hospitalized patients, study reports

A recent study by Ohio State University researchers found that nearly three-quarters of hospitalized patients with anxiety received treatment, but symptoms were documented on less than half of their charts. The study highlights the need for systematic evaluation and objective measures to address anxiety management in healthcare.

Cigarettes send male sex life up in smoke

A study of 4,764 Chinese men found that cigarette smoking is associated with a 60% higher risk of erectile dysfunction. The risk increased with the number of cigarettes smoked daily, highlighting the negative impact of smoking on male sex life.

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Short thighs linked to greater likelihood of diabetes

Researchers found an inverse relationship between upper leg length and diabetes, with shorter legs associated with higher risk. White women and Mexican-American women showed increased likelihood of diabetes for each centimeter less of ULL.

Stressed-out men may have inherited risk for early heart disease

A new study suggests that family history of heart disease and a genetic predisposition to stress may be key factors in the development of early heart disease. Men with a positive family history tend to develop heart disease 12 years earlier than those without, and experience higher stress levels

Eating breakfast may reduce risk of obesity, diabetes, heart disease

Research finds that eating breakfast daily lowers rates of obesity and insulin resistance syndrome, a key factor in type 2 diabetes and heart disease. Whole-grain cereals also appear to have protective effects, with daily consumption associated with a 15% reduced risk of the syndrome.

American Heart Association: obesity prevention begins in childhood

The American Heart Association's scientific statement highlights the importance of preventing childhood obesity to reduce adult heart disease risk. Studies show that obesity in children is linked to insulin resistance, type 2 diabetes, and cardiovascular disease, emphasizing the need for early interventions.

Justification for use of electroconvulsive therapy to treat depression

A comprehensive review of 73 randomized trials on electroconvulsive therapy (ECT) for depressive illness reveals significant efficacy improvements over sham ECT, pharmacotherapy, and unipolar ECT. The study underscores the importance of ECT as a treatment option for managing severe depression.

Rigol DP832 Triple-Output Bench Power Supply

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Climate changes may increase extreme rain/snow events in California

Climate change projections indicate an increase in heavy precipitation and extreme events in California's Sierra Nevada region, with a 37% rise in wet days per year. This could lead to more flooding due to the shift from snowfall to rainfall, reducing the buffering effects of snow.

Psychology professor maps choice-making in the brain

Research by Kansas State University psychology professor maps choice-making in the brain, revealing two systems: deliberative and emotional. The study demonstrates the relationship between brain activity and observed choices, with surprising results on how the brain processes risk and ambiguity.

Researchers solve ballistic mystery in ceramic armor

Researchers from Johns Hopkins University and the U.S. Army Research Laboratory discovered that higher-energy impacts cause boron carbide to transform into a more fragile glassy form. This transformation has implications for the development of improved armor materials.

Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

What's lost is found again: 'Virtually' rebuilding Native American monuments

The EarthWorks project uses architectural software and high-resolution computer modeling to virtually rebuild ancient Native American monuments. The team has successfully recreated the location and appearance of many region's earthworks constructed by the Adena, Hopewell and Fort Ancient cultures from as early as 600 BC.

Researchers developing 'sentinel plants' to warn of bioterrorism

Penn State scientists are developing genetically engineered plants that can detect and signal harmful chemical or biological agents. These 'sentinel plants' could be used to warn of bioterrorism threats, locate land mines, and even monitor environmental conditions in agriculture.

Idea for prostate treatment based on breast cancer discovery

A new study led by Queen's University aims to increase the sensitivity of prostate cancers to anti-cancer drugs using nitroglycerine. Researchers hope to develop a better understanding of how prostate cancer cells become resistant to chemotherapy, with potential applications for other cancers such as breast cancer.

GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

Arizona pioneer in plastics wins top chemistry award

Vandenberg discovered isotactic polypropylene, a strong and resistant form of polypropylene used in dishwasher-safe containers and water-resistant outdoor carpets. He has since developed new biomedical polymers with potential applications in implants and medical devices.

'One-stop' approach works well for cervical cancer prevention

A study published in The Lancet found that same-day testing and treatment led to high rates of compliance with recommended treatment, with 83.2% returning for a follow-up visit. The 'one-stop' approach also improved patient satisfaction, with nearly 98% saying the treatment was equal to or better than expected.

Tea complements drugs in fight against colon cancer

A study found that green and white tea can prevent colon tumors as effectively as the prescription drug sulindac. Moderate consumption of these teas may provide cancer protection without side effects associated with NSAIDs. The combination of tea and sulindac showed an 80% tumor reduction.

Celestron NexStar 8SE Computerized Telescope

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Pheromone receptors need 'escorts'

Researchers discovered that MHC proteins, including M10, play a crucial role in detecting and modulating pheromone activity in mice. The findings suggest that these proteins may act as escorts for pheromone receptors, allowing them to reach the surface of neurons where chemical reception takes place.