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Science News Archive 2007


Page 80 of 203

New clues to mechanism for 'colossal resistance' effects

Researchers at Brookhaven National Laboratory discovered a new mechanism underlying colossal magnetoresistance, a phenomenon that enables dramatic changes in electrical resistance. The findings have the potential to improve data storage devices with higher density and reduced power requirements.

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.

'New continent' and species discovered in Atlantic study

An international research team has discovered a new species of Ostracod in the North Atlantic Ocean, while exploring the Mid-Atlantic Ridge. The team used advanced technology to capture stunning images and specimens, shedding light on life in this remote deep-sea environment.

Learning how to learn for exam success

A new study by the Economic and Social Research Council's Teaching and Learning Research Programme found that schools can be turned into places where students become independent learners. The project showed that teachers who receive proper professional development and support can help children take responsibility for their own learning.

UC-Irvine program that melds life sciences and computers awarded $5.6 million grant

The UC Irvine Institute for Genomics and Bioinformatics has received a $5.6 million grant to expand its Biomedical Informatics Training program, which trains graduate students in the intersection of life sciences and computational technologies. The program, one of only 18 nationwide, provides specialized training in molecular biology, ...

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.

Whiplash may produce delayed jaw pain

Researchers found that whiplash trauma increases the risk of developing temporomandibular joint (TMJ) symptoms, which can be painful and affect daily life. In a study of 60 patients, 34% developed TMJ pain within a year after the accident, compared to 7% in uninjured controls.

Hypertension: Uncontrolled and taking over the world

The Lancet Editorial warns that hypertension's increasing burden will largely stem from poor lifestyles, with a staggering 90% risk of developing the condition in developed countries. Effective treatments exist, yet many patients misbelieve they can 'cure' hypertension and stop medication when their blood pressure falls.

Celecoxib helps prevent restenosis and appears safe

A study published in The Lancet found that celecoxib can reduce the need for revascularisation of the target lesion by 35% after stent implantation, making it a promising adjunctive treatment for preventing restenosis. However, long-term use of celecoxib may expose patients to an increased risk of heart attack.

Apple iPhone 17 Pro

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

Can cancer drugs combine forces?

Researchers suggest treating CML patients with a combination of imatinib and dasatinib to prevent BCR-ABL mutants that are resistant to both drugs. A study found that combining the two drugs can increase time before relapse or decrease chance of cancer return.

Antigen sparing strategy could boost bird flu vaccine production

Researchers developed a novel antigen-sparing adjuvant strategy to improve immunogenicity of the bird flu vaccine. The new formulation showed significant cross-clade immunity against H5N1 viruses and induced high levels of neutralizing antibodies, increasing protection against pandemic.

GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

Key to out-of-control immune response in lung injury found

Acute Respiratory Distress Syndrome (ARDS) is a deadly complication of severe traumatic injury, bacterial infections, and more. A recent study found that a protein called Cblb modulates the inflammatory response in ARDS, with mice lacking the gene being less likely to survive.

'Memory molecule' stores memories in neocortex

Researchers found that PKMzeta is necessary for storing long-term memories in the neocortex, a part of the brain responsible for higher-level cognitive functions. Persistent phosphorylation by PKMzeta is crucial for storing these memories.

Nanoscale blasting adjusts resistance in magnetic sensors

Researchers at NIST create a process to fine-tune the electrical resistance of individual layers in magnetic sensors, enabling faster and more efficient data storage. By using highly charged ions to create tiny pits, the team can tailor the resistance of the sensor without changing any other part of the device.

Is ultrasound as useful as we think?

The article challenges the routine use of ultrasound as a screening procedure for chromosome abnormalities, suggesting that foetal 'nuchal thickness' measurements are not supported by scientific data. This could lead to the 'loss' of normal babies in attempts to prevent Down's syndrome and trisomy 18.

Meta Quest 3 512GB

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

Scientists retrace evolution with first atomic structure of an ancient protein

Researchers used state-of-the-art techniques to recreate an ancient human protein, tracing its evolution and discovering how it acquired a crucial new function. By analyzing the protein's atomic structure, scientists identified seven key historical mutations that recaptured the protein's present-day response to cortisol.

Today's white rice is mutation spread by early farmers

Researchers found that 97.9% of white rice is derived from a single gene mutation in the Japonica subspecies, while the remaining 2.1% comes from independent mutations in other subspecies. The mutation affects grain color by activating the molecular pathway for rice seed development.

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.

Mother's little helpers

In a study on the superb fairy-wren, researchers found that mothers who receive child-care assistance from helpers produce smaller eggs with less nutritious yolks, allowing them to live longer and breed more often. This unique adaptation suggests that helper birds may play a crucial role in the survival of some bird species.

JCI table of contents: Aug. 16, 2007

Researchers investigating chronic myeloid leukemia treatment options suggest combining drugs to combat resistance, while others explore targeting prostaglandin E2 receptor EP1 for hypertension therapy. Additionally, a study reveals that Sphingosine 1-phosphate receptor 2 deficiency prevents abnormal blood vessel formation in the retina.

Computing breakthrough could elevate security to unprecedented levels

University of Michigan researchers have made a significant breakthrough in accelerating quantum computers by harnessing the power of pulses of light. This innovation has the potential to foil national and personal security threats by rapidly deciphering encrypted codes and strengthening information protections.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

Specific antagonism lowers blood pressure

Researchers identified EP1 as a key factor in blood pressure regulation and found that inhibiting it can reduce hypertension. Targeting this receptor subtype may be a viable approach to treating high blood pressure.

New caledonian crows find 2 tools better than 1

Researchers found that New Caledonian crows use two tools better than one to get a snack, rivaling great apes in tool-use skills. The birds solve the problem by using analogical reasoning, which requires seeing a novel situation as similar to a previous one.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Penn researchers discover new mechanism for viral replication

Researchers identified a new strategy that KSHV uses to replicate its viral genome, allowing it to evade the immune system. By eliminating viral protein production, they found that KSHV DNA can autonomously recruit cellular replication machinery proteins.

Structure of 450 million year old protein reveals evolution's steps

Researchers recreated a 450-million-year-old protein using X-ray crystallography and mapped its structure. They found that only seven mutations were needed to evolve the ancient receptor into its modern form, with some 'permissive' changes paving the way for more significant transformations.

Davis Instruments Vantage Pro2 Weather Station

Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.

Self-fertility in fungi -- the secrets of 'DIY reproduction'

Researchers at the University of Nottingham discovered that Aspergillus nidulans fungi can reproduce sexually without a partner. This 'DIY reproduction' allows individuals to produce new offspring by activating internal sexual machinery, bypassing traditional mating.

Free distribution of insecticide-treated mosquito nets can save lives

A recent study published in PLOS Medicine found that a free mass distribution program increased ITN use among Kenyan children from 7% to 66%. The high rate of adoption was consistent across different family income levels. The researchers argue that making ITNs freely available is crucial for achieving high levels of use and saving lives.

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.

Understanding hypertension in African Americans proves elusive

A recent study found that exercise did not lower aldosterone levels in African Americans, a hormone linked to hypertension. Despite this, researchers believe exercise still has potential benefits for reducing blood pressure. The study's findings highlight the complexity of understanding hypertension in African Americans.

Memory machine

Scientists found that long-term memories require a miniature molecular machine to maintain, which must be constantly active. Jamming this 'machine' can briefly erase memories, suggesting potential future treatments for memory problems.

Ginkgo SRMs: Tools for product analysis/quality

The National Institute of Standards and Technology (NIST) has issued a suite of Standard Reference Materials (SRMs) for ginkgo biloba, enabling the validation of analytical methods and support measurements associated with clinical trials or product label claims. The SRMs can also be used by dietary supplement manufacturers to improve p...

Restricting blood flow in the arm to protect the heart?

Researchers found that restricting blood flow in the arm before coronary artery bypass graft surgery reduced troponin T levels by 43%. This technique, known as remote ischaemic preconditioning, may help protect the heart from injury during surgery. The study's implications for clinical practice are considered immense.

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.

University of Cincinnati researchers design humorous 'bot'

Researchers at the University of Cincinnati have designed an AI software program that can recognize jokes, marking a significant advancement in computer capabilities. The bot uses phonological similarity and wordplay to identify humor, but is still limited by its current knowledge base and formal communication systems.

SRMs track fire retardants in humans and environment

Researchers have measured concentrations of polybrominated diphenylethers (PBDEs) in human blood serum, cod liver oil, and house dust using NIST's Standard Reference Materials (SRMs). The results provide a better understanding of the source and degree of PBDE contamination in humans and the environment.

Celestron NexStar 8SE Computerized Telescope

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

Freshwater supplies threatened in central Pacific

The study reveals that groundwater in atolls is vulnerable to frequent droughts, making it unreliable for drinking water. The team proposes strategies to increase the resilience of small island communities to water-related changes, including improving institutional management and community participation.

UA physicists discover 'super crystals' in a semiconductor

University of Arizona physicists have discovered 'super crystals' in certain organic semiconducting solids, which could create splashes of current and exhibit unique electrical properties. This discovery was made possible by analyzing experimental data from a previous study on a mysterious solid-state phase in a semiconductor.

Anthrax vaccine produces immunity with nanoparticles, not needles

A vaccine against anthrax has been developed using nanoparticles, which triggers a strong immune response and induces immunity on mucous membranes, providing protection after bioterror attacks. The new vaccine is easy to store and administer without needles, making it a valuable tool for health authorities.

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.

Low levels of key protein may indicate pancreatic cancer risk

Researchers found that people with low IGFBP-1 levels were twice as likely to develop pancreatic cancer as those with higher levels. This protein's role in modulating insulin and IGF hormones may hold clues to the disease's development, potentially aiding in risk prediction.

Birth records hold pancreatic cancer clue

Research suggests women with a history of gestational diabetes are at higher risk of developing pancreatic cancer. A study of over 37,000 mothers who gave birth in Jerusalem between 1964 and 1976 found five cases of pancreatic cancer among those with gestational diabetes.

New target for anti-flu drug development

Scientists at Cure Lab, Inc. have identified a new target for the development of anti-influenza drugs, specifically the M2 protein, which may be responsible for killing human cells. This discovery has the potential to lead to a new generation of medicines that can complement existing treatments for influenza.

Fluke 87V Industrial Digital Multimeter

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