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Science News Archive November 2004


Page 13 of 13

JCI table of contents November 1, 2004

Researchers identified a link between genetic mutations in the ABCA1 gene and lower HDL cholesterol levels in the general population. Approximately 10% of individuals with low HDL levels carry a mutation or nucleotide modification in one of their ABCA1 genes, suggesting that genetic variation plays a role in regulating HDL levels.

New quick test for drug-resistant strains of gonorrhea

A new quick test has been developed to detect drug-resistant strains of gonorrhea by identifying genes linked to resistance in urine samples or leftover products from other diagnostic techniques. The test uses probe technology to simplify analysis of samples that cannot be used for culturing organisms.

Are museum collections of ancient life representative?

Researchers compared bulk samples from five geological formations with a museum collection, finding that the diversity of mollusks is similar. The study also revealed that shells in museum collections are better preserved due to time, making them an important resource for researchers.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Research news from the AGA

Increased use of virtual colonoscopy is expected to lead to a decrease in traditional colonoscopies due to improved detection rates. Virtual colonoscopy without bowel preparation has been found to be as effective as traditional colonoscopy in detecting colorectal polyps, increasing patient compliance and potential screening rates.

'Weekend' use matches daily drops for 'lazy eye'

A clinical trial found that daily and weekend administration of atropine sulfate eye drops have similar improvement in children with amblyopia, a condition affecting 3% of US children. The study suggests weekend drops may relieve parent burden while encouraging treatment compliance.

Nicotine dependence & psychiatric disorders

A NIH study reveals that adults with nicotine dependence and/or psychiatric disorders account for 70% of all cigarette consumption in the US. The study also finds a strong co-occurrence between nicotine dependence and various psychiatric disorders, including mood and anxiety disorders.

Gut microbes can open gates in fat cells

Research reveals that gut microbes suppress fasting-induced adipocyte factor (Fiaf), helping to keep fat cell gates closed. This suppression can lead to increased fat storage and insulin resistance, highlighting the importance of gut microbiota in regulating fat metabolism.

Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Team-centered program effective in reducing disordered eating among athletes

A team-centered program called ATHENA was effective in reducing disordered eating behaviors among female high school athletes. The program, which focused on promoting healthy nutrition and exercise training, showed positive changes in athletes' dietary habits and reduced use of diet pills and other unhealthy substances.

Gene linked to enlargement of the factory where proteins are processed

A study by St. Jude, Loyola and Kyoto University discovered that XBP1 coordinates the processes of building and equipping new ER to increase the cell's capacity for folding and shipping proteins. The gene triggers the production of phosphatidylcholine, a major building block of the ER membranes.

American Thoracic Society journal news tips for November 2004 (first issue)

A study found that melatonin improved sleep quality in women with mild to moderate asthma without affecting asthma symptoms. Another study revealed a high prevalence of sleep-disordered breathing among commercial truck drivers, linked to increased accident risk and substance abuse. Critical care use was common among seriously ill patie...

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.

Plentiful fossils of dinosaur contemporary allow population study

Researchers studied Tanytrachelos ahynis fossils from the late Triassic Cow Branch Formation, finding no significant differences in size or morphology between populations of the same species. The team analyzed over 90 specimens and discovered that environmental factors rather than intrinsic differences may be responsible for preservati...

European nations urged to ratify international treaty on tobacco control

The World Health Organization's Framework Convention on Tobacco Control aims to reduce tobacco use through measures such as banning advertising, warning labels, and smoke-free places. European countries are called upon to swiftly ratify the treaty to combat lung cancer and protect public health.

Job-stressed women more vulnerable than men to 9/11 trauma

A longitudinal study on workplace stress found that women who experienced sexual harassment, abuse, or powerlessness in their jobs were more likely to suffer mental health consequences after the 9/11 attacks. Women reported increased anxiety and escapist motives for drinking alcohol, while men did not experience similar health effects.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Bristol scientists find key to unlock body's own cancer defence

A team of researchers has discovered a new form of vascular endothelial growth factor (VEGF) called VEGF165b, which inhibits the growth of new blood vessels required for tumours to grow above one millimetre. This protein is found in normal tissues and can prevent cancer growth by starving tumours of nutrients.

Socio-economic factors sway African-Americans

African-Americans report lower annual quit rates compared to Whites, with cultural norms and parental prohibitions playing a significant role in curbing smoking tendencies. Community-based initiatives can be more effective than cessation programs in reducing smoking rates among African-Americans.

Apple MacBook Pro 14-inch (M4 Pro)

Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.

Carving new frontiers for ion-beam technology

Researchers developed a novel ion-beam system that neutralizes positive ions using plasma, enabling precise material shaping. The combined beam allows for multiple species of ions to be accelerated and used in various applications, such as producing sound suppressors for jet engines.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Creality K1 Max 3D Printer

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

Study of trends in celiac disease

A new study on celiac disease over a 52-year span reveals a significant shift in patient demographics and symptom presentation. Fewer patients are diagnosed with diarrhea, while more are discovered through screening, leading to an increase in silent diagnoses.

Do lead bullets continue to be a hazard after they land?

A five-year study by Virginia Tech researchers found that lead bullets do not leach into water tables or streams after landing on controlled shooting ranges. The study's findings suggest that lead is mostly absorbed in the top few inches of soil and does not pose a significant risk to wildlife.

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

UK researcher uncovers clues to Alzheimer's disease

A UK researcher has made significant breakthroughs in understanding the mechanisms of Alzheimer's disease. The study found that methionine in the human amyloid beta peptide is a key contributor to the disease, causing damage to neurons and decreased cell viability.

A key to pregnancy-associated malaria

Researchers have discovered VAR2CSA, a protein that enables malaria parasites to infect the placenta during pregnancy. Women with high levels of antibodies against this protein experience fewer complications and give birth to healthier babies.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.

Fat buildup found in hearts of obese or diabetic heart failure patients

Researchers have found that fat buildup in the heart muscle, called lipotoxicity, is associated with metabolic irregularities and insulin resistance in obese and diabetic patients. Gene expression and protein findings provide potential long-term targets for treating heart failure, which affects 5 million US patients annually.

Hurricane Ivan helps student study sinkholes

A Ph.D. student at Virginia Tech is using electrical resistivity to measure changes in underground water movement in sinkholes. He measured a rapid change in water movement under a sinkhole during Hurricane Ivan's downpour, finding preferential flow paths and potential contaminants.

One-way processes speed degradation of coral reefs

Research identifies seven ecological ratchets that contribute to coral reef loss, including decreased reproductive success and disproportionate predator survival. Organizations should focus on preventing degradation rather than restoration, with local management of resources being a key strategy.

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C)

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Imperial to lead the way in developing vaccines against bio-weapons

The Imperial College London team, led by Dr. Danny Altmann, is developing new vaccines against anthrax and other bio-weapons using state-of-the-art technologies. The research will also contribute to a better understanding of emerging infectious diseases and the development of effective diagnostics and treatments.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.