A comprehensive study sheds light on the origin of whales and dolphins by analyzing morphology, behavior, and genetics of living and fossil relatives. The findings suggest that cetacean ancestors transitioned to water before becoming carnivorous, with a 48-million-year-old semi-aquatic herbivore named Indohyus being a key discovery.
The fisheries industry's pursuit of consumer-friendly fish products is impacting fish populations worldwide. Scientists have found that repeated selective harvesting is causing changes in fish morphology, development, and behavior.
Assoc Prof Lam has won a S$20,000 fellowship to support her research on self-assembling biomolecules for sensing applications. The award recognizes her contributions to the advancement of science and research in Singapore, building on her expertise in understanding and designing materials.
Scientists have identified a gene mutation responsible for premature skin aging, known as 'wrinkly skin syndrome.' Increasing levels of the PYCR1 protein could reverse conditions causing fast aging and wrinkly skin.
Researchers found that the 'washout' curve type is most predictive of malignancy, with 45.7% of lesions with this pattern being malignant compared to 20% with a plateau and 13.3% with persistent enhancement. The study suggests that kinetic features in breast MRI assessment can help determine whether a lesion needs biopsying.
A team of researchers has discovered a novel mechanism by which elastin-like polypeptides increase recombinant protein accumulation in tobacco plants. The study found that ELP fusions targeted to the endoplasmic reticulum induce the formation of mobile protein bodies, enhancing protein yield.
Researchers investigate strange river behavior in Arizona, attributing it to ancient tectonic extension. In another paper, scientists study active low-angle normal faults in Mexico, resolving a long-standing controversy on their existence.
Researchers at the University of Leicester have identified a sap-sucking psyllid called Aphalara itadori as a potential biocontrol agent to combat Japanese Knotweed. The plant, which costs £1.5 billion to control in Britain, is a single clone and lacks population resistance.
A team of researchers led by Dr. Nicholas Lang is studying three ancient Martian volcanoes to better understand the planet's history and potential water sources. The study may have implications for the search for life on Mars, as liquid water could have existed in the past.
A Virginia Tech researcher has solved the mystery of the Bourret's horseshoe bat's unusually large nose, discovering it uses the elongated snout to create a highly focused sonar beam. The study provides insights into the evolution of biological shape and its physical function.
Research highlights the role of large igneous provinces (LIPs) in shaping Earth's surface, while also uncovering new climate oscillation patterns. Experts analyze topographic metrics to understand hillslope evolution, resolving long-standing debates over porphyroblasts and neptunian eruptions.
Prof. Noam Eliaz's electrochemical coating process improves implant functionality, longevity, and integration into the body. The new coating reduces materials failure by 33% and has potential to spur new bone growth.
Research suggests that triathletes who undertake high levels of cycling training have worse sperm morphology and quality. The study found a statistically adverse correlation between sperm morphology and the volume of cycling training undertaken per week.
Research reveals Alisol B acetate inhibits proliferation of gastric cancer cells and induces apoptosis through mitochondrial and PI3K/Akt signaling pathways. This could lead to the development of a new anticancer agent for treating gastric cancer, one of the most common cancers worldwide.
Kris Hundertmark challenges the two-species concept of North American and Eurasian moose based on DNA analysis revealing three genetic groups with regional variation. The chromosome and morphology differences between the two species are minor and not functional.
Dr. Jonathan Losos has made significant contributions to the knowledge of Caribbean ecosystems through his research on anole lizards. His work highlights the importance of natural selection, competition, and niche evolution in shaping assemblages of Anolis species.
Researchers at Oregon State University have made a groundbreaking discovery about bird physiology, finding that birds' lung structure and musculature are critical to their flight capacity. This study suggests that birds did not descend from theropod dinosaurs but instead evolved on a parallel path.
A comprehensive investigation into sea urchins' axial complex has shown that various internal organs are structurally linked. The study uses high-resolution imaging to analyze specimens from multiple orders, providing a re-evaluation of published studies spanning two centuries.
A new study by researchers at the University of Murcia found that men who consume more fruits and vegetables have better semen quality. The study, which analyzed data from 61 men, showed that higher antioxidant intake is associated with improved sperm concentration parameters.
Recent research includes the documentation of Holocene rupture on major faults in Lake Tahoe Basin and evidence for a large paleolake in Western Desert, Egypt. A study on groundwater system in southern Colorado Plateau-Arizona Transition Zone also sheds light on seismic hazards in western Washington State.
The Tomato Analyzer software provides accurate and objective measurements of fruit shape, aiding morphological research. The analysis is more efficient for large numbers of subjects and detects traits difficult to quantify manually.
A noninvasive test using diffusion weighted MRI accurately identifies benign from malignant pelvic lymph nodes in patients with gynecologic malignancy. The test has a sensitivity of 92% and specificity of 85%, making it a useful tool for determining the extent of cancer spread.
Researchers used computational approaches to analyze a human myeloid leukemia cell line's transcription factor network. They identified specific subnetworks of proteins that play a role in cell differentiation, and found the network to be redundant and resilient.
A University of Iowa biologist is studying how picoeukaryotes, tiny ocean plants, adapt to changing environments in response to climate change. The research found that despite sharing similar morphology, these organisms have distinct gene pools and unique genetic features that allow them to thrive in different ocean regions.
Researchers develop first tri-continuous mesoporous material, named IBN-9, with a hexagonal minimal surface, opening possibilities for catalysis, separation and drug delivery applications. The material has unique nano-fiber morphology and distinct diffusion rates in different directions.
A study published in the Proceedings of the National Academy of Sciences has found that snail shells in the Atlantic Ocean have increased in size due to changes in local conditions, such as wave exposure and invasive species
A new technique using scanning tunneling and atomic force microscopes can identify complementary DNA base pairs by measuring the strength of hydrogen bonds. This method could lead to a new DNA sequencing technology that is faster and cheaper than current methods.
This study demonstrates novel microstructural transition in Al80.4Cu13.6Si6 ternary eutectic alloy upon substantial undercooling. The primary phase transforms from (Al) dendrite to faceted (Si) block at an undercooling level of 73 K.
A team of scientists discovered the oldest fossil brain in a 300-million-year-old fossilized iniopterygian from Kansas. The brain is symmetrical and has a large lobe for vision, reflecting the fish's massive eye sockets.
A new tool called Color Test (CT) was implemented in the Tomato Analyzer (TA) software to analyze color in fruits and vegetables. The study found that CT accurately captured and described characteristic colors for various crops, including tomatoes and strawberries with nonuniform pigmentation.
Imaging findings on MDCT suggest a higher risk of recurrence and metastasis in solid pseudopapillary tumors of the pancreas. The study found that larger tumor size and specific imaging features were associated with increased vascular invasion and capsular disruption, indicating malignant potential.
Researchers developed a new technique to detect early-stage pancreatic cancer by analyzing nanoscopic changes in cell biopsies. This method may help diagnose cancers earlier and treat them more effectively.
The University of Miami's Rosenstiel School of Marine, Atmospheric, and Earth Science has received a $3.75 million grant from the Office of Naval Research to support satellite-based research in the Western Pacific Ocean. The project aims to better understand typhoons, internal waves, and coastal processes using satellite data.
Researchers from Northwestern Polytechnical University discovered novel microstructural transitions in the Al80.4Cu13.6Si6 ternary eutectic alloy upon substantial undercooling. The study highlights the importance of understanding rapid solidification mechanisms and microstructure formation for this widely used material.
Researchers estimate that the 60-million-year-old Titanoboa cerrejonensis snake would have required an average annual temperature of 30-34°C to survive. Its size is comparable to that of today's anacondas and reticulated pythons, but its discovery challenges our understanding of climate and species adaptation.
A recent study by researchers at the University of Bath and London's Natural History Museum found that dinosaur fossils match their evolutionary trees remarkably well. The study used statistical data from fossils of four major dinosaur groups to confirm the accuracy of current views on their evolution.
Researchers discovered how invasive ants cooperate to form massive supercolonies, allowing them to expand territory and evade native enemies. The study reveals that these traits develop when populations grow and adapt to new habitats.
A new species of fish from tropical South America has been discovered, confirming suspected roots to the loricariid catfish family tree. The species, Lithogenes wahari, shares traits with both the Loricariidae and Astroblepidae families, including bony armor and a grasping pelvic fin.
Researchers at Uppsala University shed new light on the origin of jawed vertebrates by studying the fossilized skull and jaws of Ptomacanthus anglicus, a 410-million-year-old fish. The study reveals a complex relationship between this ancient species and modern jawed vertebrates, including humans.
Researchers used scanning electron microscopy to study scorpion book lungs, revealing new variation and phylogenetic significance. The findings suggest a significant change in respiratory apparatus evolution early in modern scorpion history.
Research on Scutellaria barbata extract reveals growth inhibitory effects on human cancers, including lung, breast, and digestive system cancer. The extract induces apoptosis in hepatoma cells through the mitochondrial pathway, suggesting a potential therapeutic approach.
In a rat model of depression, fluoxetine inhibited mast cell ultrastructural alterations and de-regulated rMCP-1 expression. Treatment with fluoxetine suggested that SSRIs are an effective therapeutic agent for some gastroduodenal diseases caused by psychological factors.
In a developmental program, Dictyostelium cells acquire polarized morphology and aggregate to form a migrating stream. The team discovered that ACA-containing vesicles cluster at the rear of cells, creating a 'breadcrumb trail' that guides fellow cells to join the parade.
Biomolecules significantly enhance magnesium content in calcite, offering clues to ancient environments. The findings raise questions about the interplay of factors on metal contents in biominerals.
Researchers propose a simple model of development that explains patterns in morphology and body plans, attributing sparseness of variety to interactions between multiple genes. The hybrid developmental-phylogenetic model reproduces fossil record patterns, including increasing variation among taxonomic groups and decreasing within.
Advances in nerve repair, miniature implantable medical devices and proton therapy were showcased at the AVS 55th International Symposium. Researchers developed new technologies to print cells for artificial organs and created microscopic medical devices that can deliver drugs and monitor health.
A new study finds that birds have a 'thumb' due to gene expression similar to alligators, not mice. The research rekindles the hypothesis of a developmental frameshift in the evolution of bird wings.
The study found that the level of H. pylori IgG antibodies has limited value in diagnosing active peptic ulcer disease and does not show association with gastric mucosal morphology. A negative serology test result is reliable for excluding H. pylori infection, making it useful for screening purposes.
Recent advancements in cardiac imaging have led to the detection of impairments in cellular processes that precede changes in morphology and function. These early stages can be identified through various imaging techniques such as PET, nuclear imaging, MRI, ultrasound, and optical imaging.
Researchers have discovered that the diversity of parasitic wasps is even higher than initially suspected, with 313 provisional species identified through a combination of ecological and genetic data. The new analysis sheds light on a group of insects that are already known for their staggering diversity, with estimates suggesting that...
Researchers used proteomics to compare the nuclear proteome of immature and mature gonadotrophic cells, revealing novel proteins that regulate gonadotropin gene transcription and RNA splicing. Urban air pollution was found to affect placental development, leading to reduced fetal growth and pregnancy complications.
The study reveals that the Liujiang brain shares morphological features with modern humans, including a round shape and enlarged frontal lobes. The virtual endocast also shows a high brain capacity, suggesting a Late Homo sapiens classification.
Research finds that many normal-looking sperm used in ICSI have DNA damage, decreasing pregnancy chances and increasing risk of miscarriage. The study urges for more careful selection methods to avoid problems in the future.
A recent study by Dr. Stéphanie Belloc found that men over 35 have a negative impact on pregnancy rates and increase miscarriage risks in women undergoing intrauterine inseminations (IUIs). This marks the first time a strong paternal effect has been shown, contradicting previous assumptions about the role of the father in fertility.
Researchers discovered how filopodia extensions are generated and integrated with lamellipodia/ruffles in human cancer cells. The study reveals a complex interplay between these actin-based structures, suggesting that suppression of filopodia is needed for efficient cell migration.
A study published in Occupational Environmental Medicine found that men working as painters and decorators who are exposed to glycol ethers have poor semen quality. The researchers discovered that these workers have a 2.5-fold increased risk of having a low motile sperm count compared to those with low exposure.
The University of Miami's CSTARS will host a library of high-quality images collected via spaceborne C-Band Synthetic Aperture Radar (SAR) to aid in understanding hurricane and typhoon dynamics. The database will provide approved scientists with free access to imagery that can help shape storm models and resource distribution.
Researchers have successfully applied DNA fingerprinting to identify viable embryos after in vitro fertilization (IVF), opening the door for more precise embryo selection. By analyzing gene expression patterns, they aim to improve IVF outcomes by reducing multiple pregnancies and increasing successful births.
Researchers have found that the ancient human 'Nutcracker Man' did not eat nuts, contrary to previous assumptions. The study used microscopy and fractal analysis to examine marks on the teeth of Paranthropus boisei, suggesting that dietary preferences were based on scarcity rather than a regular diet.
Researchers have successfully developed bioengineered dental tissues resembling naturally formed teeth, including dentin, enamel, pulp, and periodontal ligament. The novel mineralized tissue interface formation demonstrates the therapeutic potential for regenerating tooth and bone from autologous stem cells.