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Science News Archive 2008


Page 70 of 240

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.

Duke team finds compounds that prevent nerve damage

Researchers have identified compounds that block the activity of a specific enzyme, preventing brain injury and improving survival in fruit flies with Huntington's disease. The findings could lead to better treatments for degenerative diseases such as Alzheimer's and Parkinson's.

How to differentiate abdominal tuberculosis from lymphomas?

A research article compares CT findings in mesenteric tuberculosis and non-Hodgkin's lymphoma (NHL), revealing specific enhancement patterns and anatomic lymph node distribution. The 'sandwich sign' is more often found in NHL, aiding in differential diagnosis between tuberculosis and untreated NHL involving the small bowel mesentery.

Vascular marker of ovarian cancer identified

Researchers have identified TEM1 as a specific genetic marker for the vascular cells associated with tumor growth in ovarian cancer. High levels of TEM1 were correlated with decreased survival rates, making it a potential screening tool for early detection.

Plant antioxidant may protect against radiation exposure

A study led by the University of Pittsburgh School of Medicine has found that acetylated resveratrol can protect cells from radiation damage in mouse models. The researchers hope to develop a small molecule radioprotector that can be easily administered in emergency situations.

Meta Quest 3 512GB

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

£2 million study to reveal workings of dementia genes

Researchers at the University of Manchester are investigating the biological causes of FTLD, a group of dementias affecting the frontal and temporal lobes. They plan to study the role of genes in regulating tau and progranulin levels in the brain, with hopes of finding future therapies.

A promising endoscopic technique for rectal carcinoids

A new endoscopic technique using EMR-L with 3D-EUS has shown promising results in the complete resection of rectal carcinoids. The study demonstrated a significantly higher rate of complete resection compared to traditional EMR-L alone, with a vertical resection margin also increasing.

The aetiology of acute gastrointestinal bleeding in aged patients

A study published in World Journal of Gastroenterology found that severe comorbidity is the main factor affecting clinical outcome in very old patients with acute gastrointestinal bleeding. Older patients (over 80 years) experience similar severity and rebleeding rates as younger populations, but higher mortality rates.

Apple iPhone 17 Pro

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

'Chemical equator' discovery will aid pollution mapping

Researchers found a 50 km wide atmospheric chemical equator in cloudless skies of the Western Pacific, dividing pollutants between the two hemispheres. The discovery will aid pollution mapping and climate assessment by improving simulations of pollutant transport.

Cutting edge discussion on age-related hearing loss

Age-Related Hearing Impairment (ARHI) affects nearly 1 in 3 people between the ages of 65 and 75, causing gradual changes in the inner ear. Recent advances in basic science may help prevent ARHI by understanding inner ear hair cell loss.

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.

Medicare HMO costs may prevent cancer patient clinical trial participation

A study by the University of Pittsburgh Cancer Institute found that Medicare HMO costs can be a significant barrier for cancer patients participating in clinical trials. The research suggests that the payment policy under these plans may be preventing vulnerable members of society from accessing state-of-the-art care.

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.

A novel attempt of gene therapy for type 1 diabetes mellitus

A new study demonstrates that transferring human insulin genes to the gastrointestinal tract using a non-viral vector called chitosan nanoparticles can successfully treat type 1 diabetes in rats. The study found that this method is safe and efficient, without any wound or infection.

Peptide ghrelin may be involved in both alcohol dependence and overeating

A recent study found associations between variations in ghrelin genes and increased risk of heavy alcohol consumption and obesity. The research suggests that the ghrelin system may play a role in the brain-reward systems underlying addictive behaviors, including compulsive overeating and drug dependence.

Case report: Diffuse large B-cell lymphoma with gastric infiltration

A case report describes a patient with stage IV diffuse large B-cell lymphoma (DLBCL) infiltrating the stomach, who responded well to chemotherapy. Endoscopic examination and biopsy confirmed the diagnosis, highlighting the importance of this diagnostic method for suspected gastric DLBCL.

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.

Chronic hepatitis C infection in a patient with bone marrow hypoplasia

A patient with bone marrow hypoplasia contracted HCV through blood transfusion, yet maintained normal liver function despite high serum ferritin levels. The study highlights the complex relationship between HCV infection and immune status, suggesting potential for extra-hepatic manifestations such as arthritis and vasculitis.

The effect of Curcuma wenyujin on human HepG2 cancer cell

The study found that Curcuma wenyujin essential oil exhibits antiproliferative effects in HepG2 cells by inducing apoptosis, associated with cell cycle arrest and mitochondrial membrane potential loss. The results suggest the potential value of developing ezhu as a chemotherapeutic agent for liver cancer treatment.

Melting ice under pressure

Researchers used simulations to determine ice VII's melting temperature in high-pressure conditions, finding a molecular solid phase below 450,000 atmospheres and a superionic solid phase above. This discovery opens up possibilities for water existing as a solid in Neptune, Uranus, and Earth's deep interiors.

OHSU Cancer Institute researchers study breathing during radiation

Researchers at OHSU Cancer Institute have determined that the prostate moves up and down by up to 2 millimeters during the breathing cycle, affecting radiation treatment accuracy. This new information will help doctors determine suitable margins for treatment, reducing side effects and improving patient outcomes.

Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

A new therapeutic option for human hepatocyte cancer

A new therapeutic option for human hepatocyte cancer has been identified, leveraging parvovirus H-1 oncolytic therapy. The treatment targets p53-deficient tumors and induces apoptosis, potentially overcoming resistance to genotoxic agents.

Epstein-Barr virus predicts outcome in nasopharyngeal carcinoma

Researchers found that undetectable EBV DNA levels during treatment significantly reduced cancer recurrence risk, while detectable levels increased the risk of recurrence and metastasis. The study suggests using biomarker tests before and during treatment to guide clinical therapy.

Culture greatly shapes young people's drinking habits

A study of young people in seven countries finds that cultural influences outweigh factors like age and sex when it comes to drinking habits. The research highlights striking similarities in how young people drink, including socializing and enjoying alcohol in public venues.

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.

Side effects of monotherapy with lamivudine

Four patients with pre-exposed lamivudine resistance experienced rapid re-emergence of YMDD mutations and significant viral rebound after lamivudine re-treatment. Sequential administration of lamivudine is discouraged in these cases.

Step back to move forward emotionally, study suggests

A study by University of Michigan psychologist Ethan Kross found that processing emotions from a distanced perspective can facilitate coping and reduce negative moods. By taking a step back and reviewing the situation from afar, individuals can rationalize their feelings and work through negative experiences over time.

Black patients at higher risk for colon polyps

A study found that black patients undergoing screening colonoscopy have a higher prevalence of colon polyps compared to white patients. Black men and women were more likely to have large polyps, with increased odds in those over 50 years old.

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.

The natural history of 'healthy-HCV carriers'

A study published in the World Journal of Gastroenterology found that HCV-infected patients without initial liver damage are at risk of fibrosis progression. Factors associated with this development include elevated transaminases, body mass index above 25, and time interval between biopsies.

Celestron NexStar 8SE Computerized Telescope

Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.

Is endoscopic ultrasound a better choice for staging of gastric cancers?

A meta-analysis of 22 studies found that endoscopic ultrasound (EUS) is highly accurate in staging gastric cancer, with higher sensitivity and specificity for advanced disease. EUS can help determine the most appropriate treatment approach for patients with gastric cancer, including curative or palliative therapies.

A novel technique for detection tumor lymphangiogenesis

Researchers developed a novel technique for detecting tumor lymphangiogenesis in rabbits, using percutaneous hepatic injection of ultrasound contrast material. The method combines percutaneous transhepatic lymphosonography (PTL) with contrast-enhanced ultrasonographic imaging to improve diagnostic ability for liver cancer.

What is the pituitary hormone secretion pattern in cirrhosis patients?

Researchers found that melatonin rhythm abnormalities worsen as cirrhosis progresses, and abnormal pituitary hormone patterns can predict hepatic encephalopathy development. These findings suggest that melatonin circadian rhythm abnormalities may be an early indicator of liver disease severity.

Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

Bladder cancer detected via amplified gene in cells found in urine

A team of researchers at M. D. Anderson Cancer Center has discovered a biomarker for bladder cancer using fluorescence in situ hybridization (FISH) tests on urine samples, identifying all 23 cancer cases and correctly characterizing six of seven controls as not having bladder cancer.

Methylation levels key to glioblastoma survival

Researchers found three subgroups of glioblastomas with varying degrees of methylation, leading to improved survival times in the subgroup with mixed levels. The study highlights the importance of methylation status in determining treatment outcomes and potential biomarkers for this disease.

Smart alarm clock for mobile phones

The HappyWakeUp smart alarm clock uses a microphone to detect subtle changes in sleep patterns, providing an optimal wake-up time. By waking users up during their natural 'awake' period, the device helps regulate internal clocks and reduces morning stress.

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.

New predictive tool can help determine treatment of breast cancer patients

A new predictive measurement, called a PEPI score, can help determine the treatment of breast cancer patients. A low PEPI score indicates little risk of relapse and allows patients to safely avoid chemotherapy after surgery. Women with high PEPI scores are at high risk of having their cancer return and require aggressive therapy.

2 UCSF scientists recognized for transformative research

Two UCSF scientists, Yuriy Kirichok and Miguel Ramalho-Santos, received $1.5 million NIH grants to study molecular mechanisms of cell energy production and stem cell specialization. Their research aims to develop new therapies for age-related diseases and regenerative medicine.

New ways to use biomass

Researchers have developed a new catalyst that directly converts cellulose into ethylene glycol, an important intermediate product for the chemical industry. The catalyst, made of tungsten carbide and nickel on a carbon support, achieves 100% conversion of cellulose with high selectivity.

Garmin GPSMAP 67i with inReach

Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Physicians often miss opportunities to show empathy

A study published in the Archives of Internal Medicine found that physicians rarely responded empathically to patients' concerns about mortality, symptoms, or treatment options. The researchers identified 384 moments of

Aspirin and atherosclerosis

A recent study found that aspirin increases the expression of paraoxonase 1 and apolipoprotein A1, two proteins that help remove bad cholesterol from the bloodstream. This increase can lead to reduced risk of atherosclerosis, a condition characterized by the buildup of plaque in arteries.

Apple AirPods Pro (2nd Generation, USB-C)

Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.

Healthy blood vessels may prevent fat growth

Researchers at Indiana University discovered that healthy endothelial cells lining blood vessels can reduce the tendency of precursor cells to develop into fat cells. This finding could lead to new treatment options for cardiovascular diseases and obesity.