Articles tagged with Scientific Journals
An international body of earth scientists has agreed to move the Quaternary age boundary by 800,000 years, formalizing a natural event marking the start of global climate cooling. This decision ends decades of controversy and provides a fixed point for geological research.
Researchers found that scientists combine model-based cognitive problem-solving with creativity to develop a better understanding of the system under investigation. This approach allows scientists to build real-world models and make predictions, leading to novel problem solutions.
Researchers developed a modified catheter with side holes and slits to reduce the force of contrast material exiting the end hole. The study found a nine to 30 percent reduction in velocity and a more cloud-like dispersal of contrast material, resulting in improved patient safety.
Research shows consumers develop specific rules for sharing personal data online, influencing retailers' data mining practices. Understanding these rules is crucial to improving online experiences and products.
Raptorex displays all the hallmarks of Tyrannosaurus rex, including a large head and tiny arms, at about 100th the size that would eventually become T. rex. This suggests that tyrannosaur design evolved at a small body size, with larger animals developing later.
A new species of tyrannosauroid dinosaur, Raptorex kriegsteini, has been discovered in China that predates the Tyrannosaurus rex by tens of millions of years. The fossil, which is only three meters long, exhibits the same physical traits as T. rex, including an oversized skull and powerful jaws.
A study published in the World Journal of Gastroenterology evaluated 76 cases of living donor liver transplantation and found that the Chengdu formula is reliable. The other formulas, such as Fan and Heinemann, underestimated liver volume, while Urata and Lee overestimated it.
The study investigates proficiency level in laparoscopic splenectomy using the learning curve method, finding a horizontal lazy S-shape with two distinct slopes. Surgeons can be accepted as proficient after performing at least 25 cases, contrary to the widely accepted 'L' shape.
A new study finds that cognitive stress can significantly impact decision making, leading participants to overlook information predicting negative outcomes. Under pressure, individuals may rely on past rewards rather than rational considerations, resulting in irrational biases.
A new study by Management Insights suggests that Iraq veterans may be experiencing a PTSD rate of up to 35%, doubling the expected rate due to delayed onset and subsequent deployments. The Institute for Operations Research and the Management Sciences calls for increased mental health resources to care for returning troops.
A study by psychologists found that individuals with strong moral convictions tend to distrust authorities' decisions, while those with high religiosity trust them. Participants based their trust on gut reactions rather than thoughtful deliberation.
Researchers found that enlarged fat cells and a higher waist-to-height ratio are key indicators of future diabetes in women. The study, published in the FASEB Journal, provides a simple tool for identifying women at risk of developing type 2 diabetes.
A French team identified a 'Goldilocks dose' of DHA (200mg/day) that affects biochemical markers predicting cardiovascular problems. Regular DHA consumption is likely to improve cardiovascular health, especially in aging-related issues.
A study published in Psychological Science found that carrying a heavy clipboard increased volunteers' judgment of the value of foreign currencies and the importance of social justice issues. The researchers propose that this effect may be linked to embodied cognition, where bodily experiences shape mental processes.
Researchers at the University of Haifa have developed a handwriting-based tool that measures physical properties of handwriting to detect deception. The tool shows promise in replacing verbal-based methods such as polygraphs, providing greater accuracy and ease for law enforcement.
A new study finds that abstainers are more likely to report symptoms of depression than moderate drinkers, with those labeling themselves as 'abstainers' at the highest risk. Other factors like age and social isolation may contribute to this increased risk.
Researchers found that acute transient hepatocellular injury occurs in patients with cholelithiasis and cholecystitis without evidence of CBD stones, resolving within weeks after surgery. Markers of liver damage are more severe in those with CBD stones or histologically less severe inflammation.
A rare case of duodenal obstruction after successful embolization for duodenal diverticular hemorrhage was reported. The study highlights the importance of thorough observation of resolving hematomas and conservative treatment before surgery to relieve duodenal fibrotic encasement.
Researchers at the University of Texas at San Antonio have published an 11-minute video in JoVE to demonstrate their novel hormone extraction technique. The video provides a clear format for communicating complex scientific experiments and has received nearly 3,000 views since its publication.
A new recombinase, Dre, has been discovered, allowing researchers to specifically target and modify genes in mice. This enables the creation of sophisticated mouse models to study complex gene interactions and their role in human disease.
A recent study published in Psychological Science found that bilinguals cannot completely 'turn off' a language, as knowledge of a second language affects native-language reading. Bilingual students read sentences with control words and cognates, showing shorter fixation times on cognates than controls.
Researchers at Delft University of Technology discovered that bacteria can retain motility in surprisingly narrow channels, growing and dividing instead of swimming. This new phenotype may be more common than thought, with implications for membrane filters and medical applications.
The partnership aims to increase the value of Science research by providing interactive video demonstrations of experimental techniques. The first video in the program showcases an innovative method for visualizing immune control in viral infections.
Patients with primary sclerosing cholangitis (PSC) have significantly larger fasting and postprandial gallbladder volumes compared to healthy controls. However, there is no correlation between gallbladder size or emptying and the occurrence of abdominal pain in PSC patients.
Researchers found that perianal disease, current smoking, prior steroid use and early azathioprine or biological therapy are predictors of disease behavior change in CD patients. These findings may aid clinicians in choosing the treatment strategy for their patients.
A recent study published in Environmental Science & Technology found that bioethanol production requires up to 861 billion gallons of water, with some regions consuming as much as 2,100 gallons per gallon of ethanol produced. This highlights the need for regional-specific considerations when implementing biofuel mandates.
Researchers have gained in-depth knowledge of pyruvate carboxylase's structure, a metabolic enzyme linked to genetic diseases like lactic acidaemia and hypoglycaemia. The study also sheds light on its potential role in obesity and diabetes treatments.
Research shows that individuals tend to overestimate their ability to control impulses, leading to a greater likelihood of indulging in impulsive or addictive behavior. The study found that people in a 'cold state' underestimate the influence of impulsive states on their behavior.
Researchers discovered how resveratrol controls inflammation by inhibiting two molecules that trigger inflammatory responses. The findings suggest resveratrol may be used to treat inflammatory diseases and lead to new resveratrol-based drugs.
Researchers discover that mitochondrial diseases increase susceptibility to bacterial infection, particularly with pneumonia-causing bacteria like Legionella. The stress-signal associated with metabolic abnormalities encourages the growth and reproduction of these bacteria.
Researchers found that loyalists who were most devoted to their school were also the most cooperative and helpful when confronted with injustice. However, this loyalty was short-term and may fade if the group continues to exhibit unfairness.
Research by Nansook Park and Christopher Peterson highlights the importance of experiencing positive emotions, having close interpersonal relationships, and finding meaning in life. The authors suggest that psychology has made progress in understanding human problems but still lacks a formula for achieving a good life.
A new study found that inhaling linalool, a key ingredient in aromatherapy, can alter gene activity and blood chemistry to reduce stress levels. The study also showed that linalool returned stress-elevated levels of immune cells to near-normal levels.
Researchers found thermal hyperalgesia in IBS patients compared to controls, with higher sensitivity in those with high FBDSI scores. Controls were less sensitive than C-IBS and D-IBS, with no differences between the two IBS subtypes for pain threshold and tolerance.
A large abdominal wall lipoma caused bowel obstruction in a patient with Proteus syndrome. Excision of the lipoma improved bowel passage and reduced symptoms. The treatment was successful, allowing the patient to continue medical treatment on an outpatient basis.
A study published in the World Journal of Gastroenterology found that fecal incontinence significantly impacts patients' quality of life, affecting lifestyle, coping behavior, depression, and embarrassment. The results show that over 22% of patients experience severe QOL effects due to FI.
Physicists at the University of Bonn have demonstrated a quantum walk, a superposition of heads and tails states in an atomic 'coin', and found unusual effects when observing the particle. This research paves the way for new algorithms, including search processes, that can process information much faster than classical methods.
Dr. David Yap receives prestigious Amethyst Award from Ontario Public Service for his work combating air pollution in Canada and the United States. The award recognizes his contributions to developing air quality management programs, including the Air Quality Index and Smog Alert Programs.
The Journal of Injury, Function and Rehabilitation has been accepted for coverage by MEDLINE, six months after its launch. This recognition acknowledges the journal's commitment to raising the scientific bar in the field of physical medicine and rehabilitation.
Research on Pluronic L-81, a synthetic copolymer, reveals its potential in alleviating obesity-induced insulin resistance and type 2 diabetes. The study found that L-81 significantly corrected body weight and plasma glucose levels in genetically diabetic mice.
Researchers found that adding simethicone to sodium phosphate bowel preparation improved visualization during colonoscopy by reducing air bubbles. However, simethicone did not demonstrate a significant impact on the adequacy of colon preparation.
Researchers compared views of outside observers with perspectives of New Orleans residents who rode out the storm. Despite negative stereotypes, survivors saw themselves as connected to their neighbors and community-oriented.
A recent study in Psychological Science found that repeating positive self-statements can have the opposite effect on individuals with low self-esteem. Those with high self-esteem experienced slight improvements, while those with low self-esteem felt worse about themselves. The researchers suggest that unreasonably positive self-statem...
Researchers found that long-lived bats have a resistance to protein folding damage, which explains their extended lifespan. This discovery may lead to therapies that slow down human aging.
The European Association for the Study of the Liver (EASL) has renewed its publishing partnership with Elsevier for five years, with the flagship journal Journal of Hepatology being published monthly. EASL is a leading liver association in Europe, promoting research and education in hepatology.
A recent study shows that telemedicine can diagnose retinopathy of prematurity faster than traditional bedside ophthalmoscopy. By reducing travel and communication time, telemedicine can improve the efficiency of care for ophthalmologists.
A study by Arizona State University researchers reveals that water limitation affects cricket consumption of green leaves and wolf spider hunting of crickets, highlighting the role of water in understanding ecosystem changes due to global climate change. This finding has implications for biodiversity in arid regions.
A case of Meckel's diverticulum masked by intermittent recurrent subocclusive episodes is presented, highlighting the difficulty in diagnosing this condition due to overlapping symptoms. Laparoscopy proved to be a crucial diagnostic tool in establishing the final diagnosis and also therapeutic in nature.
Research found that DOC losses from tile drains were not affected by crop management practices, but drainage hydrology and manure application played a role. The study highlighted the importance of understanding DOC contributions to surface waters in agricultural watersheds.
A team of researchers used mice as model animals to study the key proteins involved in two types of muscular dystrophy. They found disrupted stem cell function and delays of skeletal muscle formation in embryos of MD-like mice, suggesting that both types of MD might be detected in utero or shortly after birth.
Scientists have identified a molecular factor called GARP that plays an essential role in regulatory T cell function. By artificially inserting GARP into transplants, researchers were able to convert immune-reactive T cells into regulatory T cells, which inhibit organ rejection.
A study of online DVD rentals found that customers tend to hold highbrow films longer than lowbrow films, with a 1.3% increase in reversal probability if the first film is more attractive. As customers gain experience, they tend to favor want over should characteristics.
Research reveals that people tend to view products grouped close together as 'contagious' and prone to quality spreading, known as the 'group-contagion effect.' This phenomenon influences decisions in both gain and loss domains.
A new study published in the Journal of Cardiac Failure found that low NT-proBNP levels can exclude significant left ventricular dysfunction, but elevated values are non-specific. For older patients and those with diabetes or hypertension, a negative predictive value of over 99% was observed.
The study found that Ang-(1-7) levels predominate in the peripheral circulation in early stages of liver cirrhosis, contributing to reduced vascular resistance. In advanced stages, Ang 2 leads to extra-splanchnic vasoconstriction. The relationship between these peptides and hemodynamic changes was investigated.
A case of cecal volvulus was reported in a 78-year-old woman with severe abdominal pain and fever. The patient underwent an emergent laparotomy and recovered after intensive care. A review of Japanese literature revealed an increase in aged patients with mental disabilities presenting with cecal volvulus, adoption of ileo-colectomy as ...
Researchers found that two-channel GES with trains of pulses can entrain gastric slow waves and accelerate gastric emptying. This treatment approach may be applicable for treating gastroparesis and normalizing gastric dysrhythmia.
The Chinese Journal of Natural Medicines is now available in English on ScienceDirect, increasing international accessibility to Chinese medical research. This expansion enables pharmaceutical and medical scientists to stay updated on the latest advancements in traditional Chinese medicines.
A new study found that approximately 50% of radiologists surveyed reported never having their vision tested or it had been 24 months or longer since their last exam. The study, conducted at the University of Maryland School of Medicine, emphasizes the importance of regular eye exams for radiologists to maintain optimal visual accuracy.
Researchers found that preventing vascular congestion can help alleviate symptoms of heart failure. The study suggests that targeting venous endothelial responses may be an effective way to prevent congestion and improve outcomes for patients with heart failure.