Articles tagged with Fluids
Researchers have uncovered a compound monogenetic volcano at Ilchulbong, Jeju Island, revealing multiple magma pulses and vent shifts. Additionally, petrographic analysis of Enkingen impact breccias indicates significantly more than previously estimated impact melt volume.
A daily pattern of rising and falling amyloid beta levels in spinal fluid echoes the sleep cycle, with younger individuals exhibiting stronger highs and lows. As people age, this pattern flattens, potentially providing an opportunity for the body to clear away the Alzheimer's marker.
Scientists develop bio-inspired liquid repellence technology, called SLIPS, which can be used in biomedical fluid handling, fuel transport, and anti-fouling technologies. The surfaces are self-healing and can withstand extreme conditions.
Researchers found that high levels of lysophosphatidic acid (LPA) can lead to congenital hydrocephalus in mice by disrupting brain development and causing excess cerebrospinal fluid buildup. Blocking LPA's action prevents the effect, offering a potential new treatment for the condition.
According to a survey by Loyola University Health System researchers, nearly half of recreational runners drink too much fluid during races, with 36.5% following a preset schedule and 8.9% drinking as much as possible. The main cause of low sodium in runners is drinking too much water or sports drinks.
Researchers used high-speed microscopy to track particle motions in fluids, revealing the direct link between fluid flow and changes in viscosity. They found that particles are swept away by induced flows, causing fluids to become thinner, while rapid collisions form clusters, making the fluid thicker.
A new math-based model has been developed to predict pressure profiles, liquid/gas volumes, and flow rates in deep-water wells. The model aims to mitigate the risk of blowouts and gas kicks, which can occur when the pressure applied to balance hydrocarbon pressure is not sufficient.
A new study found a positive association between maternal IV fluids and newborn weight loss, suggesting that some weight loss in the first 24 hours may be due to hydration regulation rather than breast milk deficiency. The researchers recommend using weight measured at 24 hours post-birth as a baseline for assessing newborn weight loss.
Researchers at Duke University have demonstrated a theoretical ability to significantly increase the efficiency of ships by creating a 'fluid flow cloak' that tricks the surrounding water into staying still. The cloak uses porous materials and tiny pumps to push flowing water along, greatly reducing the energy needed to propel vessels.
A new study published in The Journal of Molecular Diagnostics has demonstrated the feasibility of focused fetal gene expression analysis of target genes found in amniotic fluid. The analysis could be used to monitor fetal development and determine whether fetal organ systems are developing normally.
Wearing compression stockings reduced daytime fluid accumulation and apneas/hypopnea by over a third in patients with CVI. The findings suggest that compression stockings could be a simple, low-tech treatment option for OSA.
Researchers found that rapidly infusing cold IV fluid may not be effective in reducing body temperature quickly in children after a heart attack. This is crucial for minimizing neurological complications caused by cardiac arrest in pediatric patients.
A research team led by the Woods Hole Oceanographic Institution determined what chemicals were contained in a deep, hydrocarbon-containing plume in the Gulf of Mexico. The plume was found to be 22 miles long and comprised mainly of BTEX compounds, with concentrations significantly higher than background levels.
A research team led by WHOI has determined the chemical makeup of a deep hydrocarbon-containing plume in the Gulf of Mexico, shedding light on its composition and potential effects on ocean life. The study found that the plume contained high concentrations of BTEX compounds, which can be toxic to aquatic organisms.
Researchers developed new Coulomb failure criteria for reservoirs and fault slips, taking into account viscous stress and Reynolds stress. The study used flow-driven pore-network crack model and hybrid hypersingular integral equation-lattice Boltzmann method to analyze the Zipingpu reservoir and Longmenshan slip.
Researchers found that vitamin D injections improved the removal of amyloid beta from the brain of mice, suggesting a potential therapeutic target for preventing Alzheimer's disease. Transporter proteins at the blood CSF barrier also play a crucial role in removing amyloid beta from the brain.
A $1 million University of Nevada, Reno project is providing a catalogue of favorable structural elements and models for geothermal systems to enhance exploration methodologies and reduce the risk of drilling nonproductive wells. The research aims to identify potential geothermal sites in the Great Basin with 3-D imaging.
Researchers at Berkeley Lab have developed a portable system for highly sensitive multi-dimensional chemical analysis by pairing NMR/MRI technology with microfluidic chromatography. This breakthrough enables real-time peak detection and chemical shift information for small molecules, demonstrating the unique power of magnetic resonance...
Using Archimedes' principle, MIT scientists have devised a method to measure the density of individual cells, which could provide biophysical insight into fundamental cellular processes. The new device rapidly exchanges fluids, allowing for rapid measurement and potentially screening potential cancer drugs.
A new sealant gel has been found to be effective in closing spinal wounds following surgery, achieving a watertight seal 100% of the time. The polyethylene glycol (PEG) hydrogel sealant plugs miniscule leaks in the spinal column's sheath, reducing the risk of infection and meningitis.
A team of physicists has devised a theoretical framework that explains the real-time behavior of superfluids made of fermions, a crucial step towards studying neutron stars. The researchers used the world's most powerful supercomputer to simulate complex calculations, shedding light on the properties of these enigmatic objects.
Scientists at NIST have developed a method to capture metal-based nanoparticles on a surface and release them at the desired moment, allowing for effective assessment of their toxicity in cell cultures. This approach enables precise delivery of particles to cells, mimicking real-world encounters, and reducing clumping issues.
Researchers at NIST have demonstrated a unique fluid-tuned 'metasurface,' which can concentrate energy in a material and change its properties. The metasurface's resonant frequency can be tuned by adding purified water, allowing it to reflect, store, or transmit energy.
Researchers have discovered that compaction bands in sandstone are more permeable than previously believed, which could significantly improve the development of hydraulic fracturing and CO2 sequestration technologies. This finding was made possible by advanced imaging techniques and multiscale computational models.
A Johns Hopkins University study reveals that two identical beads dropped into a turbulent flow will follow different and random paths. The phenomenon, called 'spontaneous stochasticity,' suggests that even everyday particles can behave randomly in chaotic flows.
A new microscopic theory describes interactions between components of complex polymer mixtures, enabling realistic modeling and macroscopic property predictions. The method has been experimentally proven using neutron scattering experiments, opening up possibilities for studying complex mixtures with improved properties.
Researchers found that microorganisms swim slower in elastic fluids due to increased viscosity and resistance. The study used nematode worms to test the effect of elasticity on swimming speed.
A team of researchers at MIT has discovered a simple yet efficient method to mix fluids in small or confined spaces using viscosity contrast. By injecting a thin fluid into a thicker one, the two liquids can be mixed uniformly quickly, overcoming challenges in microfluidics technology and lab-on-a-chip applications.
Research at DDW 2011 shows that patients taking clopidogrel after polyp removal have a relatively low risk of bleeding. Teduglutide increases intestinal absorption, decreasing dependence on intravenous fluid in those with short bowel syndrome. Rifaximin reduces death rates in advanced liver cirrhosis and ascites patients.
TZDs act on PPARγ, enhancing sodium transport and water reabsorption, but also have direct effects on kidney channels, explains a recent Cell Metabolism study. The findings may lead to combination therapy and selective PPARγ modulators to prevent massive fluid retention.
A NIST study reveals that glass transition process is related to molecules moving in long strings around frozen atoms, influencing viscosity. The team's computer model confirms this relationship and provides a firm computational underpinning for material design.
A Mayo Clinic case study finds Botox effective in treating disabling low cerebrospinal fluid headaches. The patient's headaches improved significantly after receiving Botox treatments, allowing her to live a more normal life.
Scientists found that a protein called Igf2 in the cerebrospinal fluid signals brain cells to multiply during embryonic development. This discovery could lead to new treatments for neurological diseases and cancer by targeting specific areas of the brain, eliminating the need for localized drug delivery.
Research suggests that cerebrospinal fluid contains a complex mix of proteins that change with age, supporting or hindering neural stem cell growth. The protein Insulin-like growth factor 2 (Igf2) strongly correlates with cell division levels.
Researchers characterize snail locomotion and find that mucus properties are not crucial for movement. The study's findings have potential applications in designing biomimetic robots that can move on fluid surfaces.
Researchers found no evidence of viral infection causing acute exacerbation of idiopathic pulmonary fibrosis (IPF) in most patients. Instead, torque teno virus (TTV) was detected in lung fluid samples from a small percentage of IPF patients, suggesting it may be a marker of lung injury rather than a cause.
Researchers discovered unique spinal fluid proteins that differentiate neurologic post-treatment Lyme disease (nPTLS) and chronic fatigue syndrome (CFS), indicating central nervous system abnormalities. The study provides a starting point for diagnostic biomarkers and potential treatment targets.
Medications like Vioxx, Bextra, and Avandia increase heart attack and stroke risk due to fluid retention. The study suggests the FDA should require verification of cardiovascular safety for all medications causing fluid retention.
The NC State team has created microfluidic devices with inherently aligned electrodes composed of liquid metal alloy, allowing for easier and faster electrode creation. This approach enables the creation of useful electrode configurations that were previously difficult or impossible to achieve.
Researchers found excessive calcification of fetal membranes may lead to preterm premature rupture of the membranes (PPROM) and preterm birth. Lower fetuin levels in amniotic fluid were linked to women at risk of PPROM.
Two new studies provide definitive evidence that administering a naturally-occurring enzyme called oxolacetate can reduce glutamate levels and improve outcomes in stroke patients. High glutamate levels correlate with poor outcomes, while high oxolacetate levels are associated with better recovery.
A new microfluidic device enables the rapid orientation of hundreds of embryos, allowing for large-scale quantitative analyses of protein positional information along the dorsoventral axis. This innovation facilitates studies on complex structures from single cells and has the potential to adapt for other model organisms.
A study suggests that adding a shear-thickening polymer like cornstarch to drilling mud could suppress instability, allowing the mud to sink and stop the leak. Physicist Jonathan Katz's idea was initially rejected by BP, but experiments show it might have worked.
Researchers at UCLA discovered that randomly dispersed microparticles can self-assemble into a highly organized structure as they flow through microscale channels. This phenomenon is driven by hydrodynamic interactions between particles, fluid, and the conduit they flow through.
Research concludes that regulatory authorities should consider removing electronic nicotine delivery systems from the market due to design feature, labelling, disposal, and safety issues. Cartridge labelling is found to be poor, with incorrect nicotine levels and inadequate instructions.
The study used an extensional rheometer to measure flow properties of complex fluids, revealing intriguing effects depending on concentration and velocity. At high speeds, the fluid can fracture like a solid, behaving like a jammed system with clusters locking together.
Engineers Sunghwan Jung and Navish Wadhwa found that silicone oil jets do not coalesce when impacted at a specific angle, due to the lubrication effect of air between them. This study sheds light on non-coalescence behaviors in various engineering systems.
Researchers at US Naval Academy have designed novel blade modifications inspired by humpback whale flippers to improve turbine performance in converting low-velocity tidal flow energy into electricity. The modified blades proved effective in extracting energy at low speeds without degrading performance at high flow speeds.
Flexible scales on sharks' bodies allow for change in direction while swimming at full speed by controlling water flow separation. This discovery has implications for designing more efficient aircraft, wind turbines, and other systems prone to flow separation issues.
Researchers have devised a predictive model to control the formation of banded ring patterns left behind by coffee droplets. The model suggests that particle deposition can be controlled by altering physical parameters such as evaporation and surface tension.
Caltech researchers have designed jellyfish-inspired pumps that utilize flexible designs and adaptable tissue composition to create efficient fluid transport systems. The pumps are optimized for medical applications, such as delivering medication or removing excess fluids from the body, without causing damage to surrounding tissues.
Virginia Tech researchers have developed a promising new cancer treatment using magnetic fluid hyperthermia, which heats up magnetic nanoparticles to kill tumor cells. The treatment has shown no adverse effects on surrounding healthy tissue.
Researchers studied Chrysopelea paradisi snakes as they glided from a branch to the ground. The analysis revealed that the snakes never achieved equilibrium gliding state, but were instead pushed upward due to aerodynamic forces. This temporary effect would eventually cause the snake to hit the ground.
Asymmetrical airflow affects vocal fold motion in individuals with paralysis, causing chaotic irregular vibrations and impaired intelligible speech. The discovery may lead to the development of implant materials that mimic voice apparatus properties to restore good vibrations.
Researchers at Harvard University have developed a simple physical model that reproduces the characteristics of real bird song, using a stretched rubber tube to mimic the zebra finch's sounds. The device, which relies on minimal neural control, produces harmonics and patterns similar to those found in actual bird songs.
A team of researchers has built a robotic hummingbird wing to discover how these birds manage to hover in gusty conditions. The robotic wing replicates the figure-eight pattern of a hummingbird's wings, creating vortices on both the downstroke and upstroke.
Researchers build robotic jump rope device to control rope parameters, capturing motion with high-speed cameras. They find that air-induced drag affects the shape of the rope, reducing total drag. Insights from the study may inform other situations involving flexible filaments in engineered and natural systems.
A team of UCLA chemists and engineers has developed a new method for coating large surfaces with nanofiber thin films that are both transparent and electrically conductive. The technique, published in the Proceedings of National Academy of Sciences, uses a solution-based approach and can be applied to virtually any surface.
Researchers propose new techniques for analyzing methane hydrate structures, finding signs of life in iron-oxide-rich spheres and pipes near Escalante, Utah. The study also explores the impact of the Three Gorges Dam on the middle Yangtze, as well as a ~300-million-year-old bivalve shell.
A computational model of a swimming fish has been developed to simulate the interaction of both internal and external forces on locomotion. The study reveals that body stiffness is crucial in determining how well a fish swims, with stiffer bodies accelerating faster but expending more energy.