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Computer programs that write text still look different from what people write. They are used in social science studies to act like humans, but we have no good way to see if they really match. The new test called CHAT mixes several clues to see how close the computer text is to real conversation. It looks at how often the text is flagged as machine made, how close its meaning matches, and what style or topics it shows, to see how humanlike the AI language really is. We tested nine open models using five ways to adjust them, such as fine tuning, style prompts, or pulling in context, on posts from X, Bluesky and Reddit. Our results show that even after tweaking, the AI words still stand out, especially in how they feel and express emotion. Models that have been taught with instructions usua

Lung cancer takes a heavy toll worldwide. Many cases slip through because current screening methods miss high-risk people. Scientists are working on smarter tools to catch the disease before it spreads. Their goal is to find a simple blood test that tells us who needs attention first. To build this tool, researchers used two major Danish populations. The Copenhagen General Population Study provided training data with 689 confirmed cases and nearly 2,000 healthy controls. The larger Copenhagen City Heart Study offered thousands of participants for final testing. These groups helped shape a six-year risk prediction model built around blood biomarkers. The team compared their new model, CPH-Lung, with an established system called PLCOm2012. The results were clear. CPH-Lung performed better

Scorpions are arthropods that live almost everywhere. They can be found in deserts, tropical rainforests, under stones, in leaf litter, burrowing in hard soil, or moving through sand. Each species fits a specific ecomorphotype that matches its environment. Researchers have long looked at how other arthropods, like beetles, interact with light, but scorpions were a missing piece. To fill that gap, scientists examined four scorpion species using Mueller polarimetry. They shone polarized light at 635 nanometers onto the exoskeleton and measured the reflected scattering. The team also watched for fluorescence, capturing emissions near 500 nanometers after exciting the animals with 405 nanometer UV‑polarized light. Even though the effects are invisible to the naked eye, the Mueller matrix anal

Eighteen women who regularly do aerobic exercise took part in a lab test. They rode a bike while researchers measured how hard they were working. The test was done twice, once with a special band that limits blood flow and once without it. The volunteers were all female and had a background in endurance training. Each session started with a five‑minute easy spin at 50 watts while keeping a steady pedal speed of 70 turns per minute. After the warm‑up the workload began at 50 watts and went up by 30 watts every two minutes until the rider could no longer continue. When the band was used, cuffs were placed on both thighs right after the warm‑up and stayed inflated for the rest of the ride. With the band in place, the point at which fatigue started appeared at a lower power output, dropping

DPP-IV is a enzyme in the blood that cuts up GLP-1, a hormone that helps lower blood sugar. When GLP-1 is destroyed fast, the body can’t control glucose well. This enzyme works quickly, so the hormone’s effect is short-lived. \n\nGut bacteria make short-chain fatty acids like acetate, propionate and butyrate. Scientists tested these acids on the recombinant human DPP‑IV enzyme and found they block its activity. The block happens in a dose‑dependent way, with an average IC50 of about 0. 62 millimolar. The inhibition is reversible and mixed‑mode, unlike the drug sitagliptin which works competitively with a Ki of 2. 6 nanomolar. \n\nWhen SCFAs are present, GLP‑1 lasts longer before being broken down. In insulin‑producing INS‑1 cells, the hormone’s calcium signal stays strong. Computer docking sho

Digital health tools are becoming common in stroke recovery. They promise to help patients manage daily tasks and stay active. Yet many of these gadgets fail when their design does not fit real‑world needs. Clinicians, families, and users often point out gaps that limit usefulness. The review aimed to gather these viewpoints and see where implementation falls short. Researchers combed six major databases from the start of records up to October 2025. Only English, peer‑reviewed studies were kept. The team looked for any work that reported stakeholder opinions on digital solutions for stroke care. Two independent reviewers screened titles, abstracts, and full texts. They used the Mixed Methods Appraisal Tool to judge study quality. Discrepancies were discussed until consensus was reached.

Researchers talked to thirty women in Australia about what perimenopause actually feels like. These women came from different cultural backgrounds. They didn't describe a steady decline. Instead they talked about a repeating pattern of disruption and stabilization. Think of it like waves rather than a slide. The study used interviews that were recorded and then analyzed for themes. Triggers for the rough patches included lost sleep, piled-up life stress, and symptoms that come and go. Brain fog showed up as mental static paired with exhaustion and self-doubt. Stress, bad sleep, and poor eating made it worse. Women didn't just wait it out. They built personal toolkits to steady themselves. Those toolkits looked different for everyone. Some paced themselves and pulled back when needed. Oth

Researchers studied how sports bras and running shoes shape two areas: breast motion and foot strike forces. Twenty-seven regular female runners joined the experiment. They tried combinations of supportive versus loose bras with cushioned versus non-cushioned shoes. Each participant completed four trial sets to gather data. The study recorded several metrics. Scientists measured shinbone shock intensity and breast movement speed compared to the torso. They also analyzed vibration patterns across low, mid, and high frequency zones. Participants answered questions about how comfortable their equipment felt. Stronger bra support led to noticeably smaller breast accelerations. It shortened the delay between chest and body motion. It reduced overall vibration energy throughout the body. Soft

Chaotic systems like the weather or turbulent fluids change a lot when you tweak the starting point just a bit. This makes guessing what will happen next really hard. Even though we see patterns over long times, the tiny details keep shifting. Researchers have tried to teach neural nets to copy these patterns. They want the model to keep the same overall statistics forever. But many of these learned models end up producing values that grow without limit. When that happens, the statistics we compute become meaningless. We built a block that solves this problem. It is a dissipative projection layer that uses simple control ideas. The layer learns two things at once: a dynamics emulator and an energy‑like function. The energy function is turned into an algebraic rule that forces the system

Scientists have discovered that male germ cells in mice go through a hidden quality control process before birth. These cells, called spermatogonial stem cell precursors, must stay healthy to pass on DNA later in life. During early development, these cells enter a resting phase called G0 arrest. This happens in the last part of pregnancy. While resting, they make lots of RNA and prepare for their future role. But this process can damage their DNA. Researchers found that some of these cells start showing early warning signs of trouble. They collect markers like AnnexinV and propidium iodide by day 16. 5 of pregnancy. These cells also have less of a protein called Dead End 1. They carry broken DNA and their mitochondria don't work well. But something surprising happened. The cells did not

New cancer drugs often get approved even when experts are not fully sure about the good or the bad parts. Usually, patients do not hear about these doubts. A pair of studies wanted to change that. They asked a simple question. Does telling people the honest truth about the shaky evidence change how they decide to take the medicine? To find out, researchers ran two separate tests using regular adults online. They made sure the group matched the country well, balancing age, sex, income, education, and race and ethnicity. This work took place from May 9 through July 26 in 2025. Rather than using hard medical words, the team wrote plain sentences explaining the uncertainty. In the first test, volunteers were split into five groups. Each group learned about one specific worry. Maybe the study

DuPont set up shop in China back in 1921. For twenty years, the American chemical giant worked hard there. Its main focus was on synthetic dyes. These were important colored products that helped businesses and homes look better. The company kept old records at the Hagley Museum. Those papers show how things changed over time. At first, DuPont was mainly a seller. But soon they decided to build their own labs. They started making dyes right here in China. Their scientists wanted exact colors that Chinese customers loved. They studied what people saw and felt through color. This meant working with many different people. Foreign managers met local chemists. Sales agents and warehouse staff also joined the team. The whole project touched big political moments. Both in China and around the wo