Articles tagged with Experimental Data
A new study by University of Notre Dame biologist Jeffrey Feder challenges the prevailing assumption about genomic speciation. The research found that speciation in the classic apple maggot fly system involves genome-wide differentiation driven by natural selection.
Researchers have developed MADmap, a new software tool that improves the mapping of the cosmic microwave background by accounting for noise in the data. The software uses a special code to weight and account for colored noise, which is a known characteristic of bolometers used to measure radiation at certain wavelengths.
Researchers at Penn University developed a new theory that explains the pace of evolution and determines the speed at which an organism adapts. The study predicts that some organisms, including humans, may not evolve indefinitely and that populations can accrue mutations at a constant rate even under Darwinian selection.
A new statistical analysis technique, sequential profile adjustment by regression (SPAR), has been developed to improve the precision of nanotechnology data. By identifying and removing systematic bias, noise, and equipment-based artifacts, SPAR can reduce experimental errors and increase confidence in measurements.
New studies by sociologists reveal that African Americans are more likely to be sanctioned by the US welfare system than whites. The research found a 29% higher risk of sanction for black clients with a prior sanction, and a 14% higher risk for first-time sanctions. In contrast, Mexican immigrants were more likely to exit welfare withi...
The latest Fermilab analysis excludes a significant fraction of the allowed Higgs mass range, carving out a section between 160 and 170 GeV/c2. This result is based on data from the CDF and DZero collider experiments, which predict that the Higgs particle should have a mass between 114 and 185 GeV/c2.
A new study published in the Journal of Personality and Social Psychology found consistently cooperative actors can shape group behavior, leading to increased productivity and economic efficiency. The findings challenge common assumptions about human cooperation in situations with short-term incentives.
Researchers combined Caltech's experimental technique with UCSD's protein-folding models to understand cytochrome c's precise folding pattern. The models successfully accounted for charge-charge interactions and hydrophobic interactions, matching experimental data.
New research reveals that root systems can be observed using advanced imaging technologies like MRI, allowing for better understanding of water uptake patterns. Roots also play a significant role in soil carbon cycling and the global carbon balance.
The Tevatron experiments have excluded a mass of 170 GeV for the Higgs boson with 95% probability, restricting possible masses and demonstrating sensitivity to potential signals. The combined data allows experimenters to cross-check and confirm results, improving their chances to observe the Higgs.
The CSIRO Australia Telescope National Facility will use a high-speed link to collaborate with international researchers on e-VLBI experiments. The technique enables telescopes hundreds of kilometers apart to observe the same region of sky simultaneously, generating high-resolution images of cosmic objects.
Experimental work on utilizing donor organs from cardiac arrested donors shows promise in addressing the critical organ shortage for lung and possibly heart transplantation. Strategies for organ preservation during transport, such as Ex-Vivo Lung Perfusion (EVLP) and Organ Care System (OCS), are also being discussed.
Researchers from University of Wisconsin-Madison and UC-Berkeley say that exotic particles may distinguish between possible shapes of extra dimensions predicted by string theory. The shape of the dimensions determines the properties and behavior of our four-dimensional universe.
The new guidelines aim to reduce ambiguity and capture necessary information from experiments to provide a deeper level of understanding. They have been implemented in public repositories such as ArrayExpress, IntAct, and PRIDE, enabling easier identification and use of relevant data.
The Gravity Probe B satellite has confirmed Einstein's predicted geodetic effect to a precision of better than 1 percent, but the frame-dragging effect is 170 times smaller and requires further analysis. Electrostatic patches on the gyroscopes' surface cause small torques, complicating the measurement of relativity effects.
The MiniBooNE experiment has confirmed the behavior of neutrinos, clarifying their fundamental properties. The study ruled out the presence of a fourth, 'sterile' type of neutrino, which was initially suggested by earlier experiments like LSND.
Engineers at UC San Diego's Jacobs School of Engineering used a virtual building to test the impact of the 1994 Northridge earthquake on a 275-ton structure. The virtual model allowed researchers to visualize data from over 600 sensors, gaining new insights into structure performance and enabling 'what if' simulations.
A new web-based system, ThermoML, has demonstrated improved data quality and access for researchers in thermodynamics. The system catches and corrects errors in about 10% of journal articles, enhancing the overall research experience.
A new MRI data-acquisition technique developed at the University of Wisconsin-Madison enables clinics to image more patients with osteoarthritis-related knee problems in a shorter time. The technique delivers precise 3D images, allowing for better diagnosis and treatment options.
The MINOS experiment has confirmed that neutrinos are not massless, with a mass difference of 0.056 eV between two types measured. This discovery opens up a new field of study to understand the universe's formation and disappearance of antimatter.
The DOE Joint Genome Institute has released a new tool for analyzing metagenomic data, IMG/M, which integrates aggregate genome data from diverse microbial communities with isolate genome data. The system allows for the examination of functional annotation profiles and strain-level heterogeneity within species populations.
A recent study found that Latina women who are highly acculturated to American society tend to drink more than those who are not. Acculturation is also associated with changes in drinking norms and depressive symptoms, highlighting the need for targeted interventions to reduce consumption.
A team of researchers from Rice University successfully combined computer modeling and experimental results in folding studies for a large, multi-domain protein using free-energy theory. The method worked remarkably well, allowing scientists to predict the folding route of proteins with unprecedented accuracy.
A high-energy photon beam search at Jefferson Lab's CLAS collaboration found no evidence of a pentaquark, contradicting earlier reports. The new analysis, which boasted improved statistics and background understanding, revealed a much weaker signal than initial results, leading researchers to re-evaluate their findings.
Recent experiments suggest that strange quarks may have zero contribution to the nucleon's charge and current distribution, but a positive trend is observed for the proton's magnetic moment. Further precise measurements are needed to confirm these findings.
Researchers have re-determined the content of argon in air, finding it to be approximately 0.9332%, very close to historical measurements made 100 years ago. This new value is significant for precision mass measurements, which require accurate corrections for air density.
The UC Davis Center for Geotechnical Modeling has been upgraded with a 30-foot radius centrifuge, enabling researchers to simulate pressures deep in the ground and study soil liquefaction during earthquakes. The network allows for remote collaboration and data sharing among researchers across the country.
Researchers have observed signatures of the spin Hall effect in semiconductor chips, a phenomenon predicted decades ago that could enable spin-based information transfer. The discovery has potential applications in quantum computing, quantum communication, and advanced sensing technologies.
Researchers have developed new algorithms to interpret NMR data, revealing protein structure and molecular architecture. The tools require less data while producing highly accurate results.
The article presents a long-awaited debate on school vouchers, focusing on estimation and conceptualization in assessing the effects of vouchers. The authors, prominent scholars in social sciences, discuss the role of theory in experimental research and the limitations of field experimentation.
Brookhaven Lab operates the main computing facility for Relativistic Heavy Ion Collider (RHIC) and is developing a system for the Large Hadron Collider (LHC). The laboratory is integrating its RHIC and LHC computing facilities into a comprehensive data grid, providing access to data from large-scale physics and astronomy experiments.
NYU scientists have developed a new mathematical method to analyze genetic data, reducing noise and errors in gene expression microarrays. The algorithm corrects for various types of errors and is expected to be widely incorporated in gene-related cancer research.
The WMAP experiment's results confirm many aspects of inflationary theory while ruling out others. The latest trends in cosmology suggest a new era of precision cosmology, where speculation about the universe is confirmed or rejected by solid experimental data.
A large randomized trial evaluating a compound intended to boost the immune response of HIV patients showed no effect on slowing disease progression. The study, led by UCSF and Harvard researchers, defied the sponsor's attempt to block publication, affirming the University's right to publish unfavorable or neutral research findings.
The Grid Physics Network initiative will create a virtual data system, allowing scientists to access and manipulate massive amounts of data from various institutions. The project has the potential to boost computing power and storage capacity, benefiting fields such as genomics and business applications.
A recent study by Dr. Ehud Ahissar finds that tactile information is encoded by both spatial and temporal data, suggesting the brain requires more than spatial patterning. The temporal pathway processes low-frequency stimuli for object location, while the spatial pathway focuses on high-frequency stimuli for object features.
The article describes how novel human genes can be found using data mining techniques on the Internet. Researchers identified putative human genes related to peptide transporter proteins, which are essential for drug absorption and distribution.
The MAXIMA experiment provides evidence for a flat universe, inflation, and a cosmological constant. The study confirms predictions made before the experiment, supporting the standard cosmology.
BioNumerik reports success with its engineered cancer agents, demonstrating reduced toxicity while preserving antitumor activity. The company plans to initiate Phase 3 trials for BNP7787 and expand clinical trials for Karenitecin BNP1350.
University of Michigan physicists have created a database that stores and retrieves data in atomic quantum phase, a new approach to data storage. The study uses cesium atoms and ultrafast lasers to store and retrieve data, confirming theoretical predictions made by L.K. Grover.
Researchers discuss seasonal cycles of air exchange, improved models for water vapor, and aerosol levels rising. They also examine the decay rate of aerosols in models versus satellite observations and their impact on Earth's climate.
Researchers at Sandia National Laboratories' Z machine create temperatures rivaling the Sun's to study iron in black holes and neutron stars. The experiments help astronomers interpret images from the Chandra X-ray observatory, shedding light on the universe's evolution and eventual expiration.
Scientists are working on developing new technologies to store, access, and search large volumes of data. The team aims to improve data management for next-generation science projects like the Sloan Digital Sky Survey, which will produce 40 terabytes of data.
The use of computers has transformed the field of chemistry, enabling researchers to automate large-scale testing of compounds and speed up drug discovery. Electronic lab notebooks are also being adopted to share information and streamline the process.
Researchers at the University of Illinois are developing a new trigger that can distinguish between interesting and non-interesting collisions in particle accelerators. The device will help identify collisions that create bottom quarks, providing essential information about fundamental rules for assembling matter.
Scientists have discovered magnetic stripes on Mars, similar to those found on Earth, suggesting the planet was once magnetized and had a global magnetic field. These findings provide insights into Mars' formation and evolution, shedding light on its potential for hosting liquid water.
A new experimental compound, CMA-676, demonstrates promising efficacy in treating acute myelogenous leukemia (AML) with an antibody-targeted chemotherapy approach. The treatment shows a remission rate of approximately 40% comparable to standard combination chemotherapy regimens.
Researchers at Berkeley's Space Sciences Laboratory have concluded that atmospheric holes in satellite imagery are caused by instrument noise, not small comets. The study analyzes raw data from the Polar spacecraft and shows that dark pixel clusters are consistent with instrumental noise.
The TEMPUS furnace, used on NASA's Microgravity Sciences Laboratory-1 mission in 1998, has demonstrated its value by making repeat measurements that matched very closely with one another. Scientists are now analyzing the data to correct surface tension measurements and make the first-ever reliable viscosity measurements.
A NASA experiment has yielded new insights into the internal fabric of soil and powders under very low confining pressures. The Mechanics of Granular Materials (MGM) experiment showed unusual density patterns and unique shear band formations, which could lead to improved engineering standards and disaster preparedness.
Phase II data reveals amprenavir's potent drug profile, with sustained antiviral effects seen in patients treated with two-drug combinations. The medication is currently being evaluated in pivotal Phase III clinical trials and has an expected US new drug application filing later in 1998.
NASA's Burst and Transient Source Experiment (BATSE) has recorded its 2000th gamma-ray burst, a significant milestone in the study of these violent cosmic events. The 2000th burst was smaller than average, but adds to the growing body of knowledge about gamma rays and their origins.
The MeasureNet system provides quick access to data, allowing teams of students to share and analyze results. By phasing it in over the last academic year, all students in first-year labs were using the system by spring quarter 1997, with overwhelmingly positive reactions.
Astronomers have detected a flash of light from a distant galaxy, potentially solving a 30-year mystery in astrophysics. The discovery suggests gamma-ray bursts originate from the distant reaches of the universe.
Two sounding rocket experiments conducted by US and Russian scientists characterized dense plasma regions in the near-Earth environment, known as the ionosphere. The data will be analyzed by both American and Russian scientists as part of a data exchange agreement.
Research suggests that higher hCG levels are associated with an increased risk of morning sickness during the first trimester. The study also found a link between age and pregnancy-related sickness, with older women experiencing less symptoms.
Researchers will monitor auroral displays simultaneously from space, jet aircraft, and the ground to gain detailed measurements of the northern lights. The Fast Auroral Snapshot (FAST) Explorer satellite guides this three-dimensional study as it gathers data about the aurora while orbiting high above the polar north.
Expert researcher Juan Roederer is set to begin his long-awaited study of the radiation belts circling Jupiter after 20 years with the Galileo spacecraft. The research aims to understand how Io, one of Jupiter's moons, affects the planet's radiation belts and compare them to Earth's Van Allen belts.
A new monoclonal antibody called ReoPro has significantly reduced life-threatening complications from angioplasty both immediately and up to three years after treatment. The study found that patients treated with ReoPro had a 59% reduction in overall death, recurrent heart attacks, and urgent repeat angioplasty or by-pass surgery.