Articles tagged with Ultraviolet Radiation
Researchers found that sunscreens with the same SPF of 50 and active ingredients can range from $0.04 to $3.79 per application, highlighting huge variations depending on product price and skin exposure.
Researchers develop a rigid organic crystal that emits red light under UV irradiation through excimer formation and generates green light through second harmonic generation under near-infrared exposure. The dual-mode optical behavior operates independently within the same crystal without interference.
Researchers from Hanbat National University develop switchable thermochromic transparent woods for smart windows, blocking UV radiation and reducing thermal conductivity. The material enables energy-autonomous light regulation and protects skin without sacrificing visible light.
Researchers found that indoor tanning users in their 30s and 40s have more skin mutations than people twice their age, particularly in areas exposed to tanning beds. This can lead to an increased risk of skin cancer, including melanoma.
A new study led by Northwestern University finds that tanning bed use increases melanoma risk by almost threefold, with DNA changes detected in areas protected from sun exposure. The study's findings support a broader field of DNA injury caused by tanning beds.
Researchers at Ohio State University developed a new approach to immobilize extracellular vesicles in a way that mimics their interactions with tissues. This allows for the study of these particles and their complex interactions with cells, enabling potential applications in disease detection, drug delivery, and biomarker discovery.
Researchers from TU Delft and Radboud University discovered CuInP₂S₆ (CIPS), a two-dimensional ferroelectric material, can control the pathway and properties of blue and ultraviolet light. CIPS shows giant birefringence in the blue-UV range, making it a potential game-changer for photonics applications.
Researchers at the University of Chicago discovered that YTHDF2 regulates RNA metabolism to suppress inflammatory responses, potentially preventing skin cancer. The study found that UV exposure triggers a decrease in YTHDF2 levels, leading to increased inflammation and tumorigenesis.
Researchers at the University of Missouri have created a more efficient method for manufacturing computer chips using ultraviolet-enabled atomic layer deposition (UV-ALD). This approach reduces the number of manufacturing steps, saving time and materials, while also minimizing the use of harmful chemicals.
A new study published in JAMA Internal Medicine found that commercially available UV-C light appliances reduced rates of viral respiratory infections by more than 12% in aged care facilities. The technology is easily installed and cost-effective, making it a transformative solution for protecting residents from emerging pathogens.
A retrospective analysis of 1036 participants found that lighter skin showed lower unprotected MED values, while winter conditions correlated with greater UV tolerance. The study advocates for lab-specific prediction models to enhance testing precision and optimize UV protection for diverse populations.
Researchers use NASA's James Webb Space Telescope to investigate a protoplanetary disk around a young star in the Lobster Nebula. They found sufficient solid material to potentially form at least 10 rocky planets and detected various molecules that contribute to planetary atmospheres.
Researchers discover certain skin bacteria metabolize cis-urocanic acid using enzyme urocanase, fine-tuning immune response to UV radiation. This finding opens the door to microbiome-aware sun protection, where resident microbes are considered in sun protection strategies.
The study provides a new look at the galactic region surrounding our solar system, revealing a roughly uniform background Lyman alpha sky brightness. The findings suggest hot interstellar gas bubbles may be regions of enhanced hydrogen gas emissions at a wavelength called Lyman alpha.
Researchers at HSE University discovered a way to control the color and brightness of glow emitted by rare earth elements. By adjusting the chemical environment, they altered the energy gap between electron levels, changing the luminescence spectrum.
Researchers discovered that endoperoxides derived from ergosterol and 7-dehydrocholesterol induce the death of melanoma cells. This finding paves the way for expanding the use of photodynamic therapy in fighting skin cancer.
Researchers developed an in-situ EPR setup to accurately identify radicals generated by PAA activation under different UV wavelengths, revealing distinct radical generation pathways. The study provides new insights into the mechanisms of radical formation and transformation using density functional theory calculations.
A recent study published in The Wilson Journal of Ornithology reveals that Long-eared Owls have fluorescent pigments in their feathers that can only be seen under ultraviolet light. The amount of pigment varies within a population and is correlated with age, sex, and size, suggesting alternative functions beyond sexual signaling.
Astronomers have discovered a clear sign of reionization beginning significantly earlier than thought in one of the most distant galaxies detected by James Webb. The galaxy's Lyman alpha light suggests an ionized bubble, a telltale signature of the Universe becoming transparent.
Researchers have developed nanomats that can absorb light energy to break down harmful pollutants in air and water. These lightweight blankets can be reused multiple times and are environmentally friendly, offering a promising solution for clean drinking water production.
Researchers developed a compact, solid-state laser system that generates 193-nm coherent light, marking the first 193-nm vortex beam produced from a solid-state laser. This innovation enhances semiconductor lithography efficiency and opens new avenues for advanced manufacturing techniques.
Researchers at the University of Turku found that nanocellulose dyed with red onion skin extract provides very effective UV protection for solar cells. The film protected 99.9% of UV radiation up to 400 nanometres and maintained its performance throughout a long testing period.
Researchers developed a numerical tool to quantify sunlight intensity and its influence on plant growth, enabling accurate predictions of sunlight patterns. The model can help farmers optimize greenhouse conditions and planting schedules, leading to improved crop yields.
Researchers from CNRS found that applying a mixture of sunscreen and insect repellent simultaneously decreases UV protection. The study used skin biopsies and computer tool analysis to measure the stress response of skin cells to radiation.
Researchers investigated skin cancer risk perceptions and sun-protective behaviors in US adults, finding associations between sociodemographic factors and sunburn risks. Higher education levels, Hispanic origin, and income groups were linked to lower sunburn risks, while married or partnered individuals had higher risks.
Researchers will investigate the interaction of fluid dynamics and Far-UVC technology to optimize its deployment in real-world settings. The project aims to make communities healthier by analyzing airflow patterns and aerosol distributions.
Researchers have developed a simple, low-cost, and high-performance ultraviolet detector using ZnO NPs PEDOT: PSS heterojunction. The device exhibits excellent photosensitivity, fast optical switching characteristics, and short rise time compared to other photodetectors.
Researchers found that combining ultraviolet light with chlorine significantly enhances toxin degradation in water without generating harmful byproducts. The study suggests using UV/chlorine as a final barrier against toxins from algal blooms, minimizing unintended toxic consequences.
New study highlights significant gaps in understanding how sunscreens affect marine ecosystems, with chemicals entering the environment through various pathways. Researchers emphasize the need for comprehensive studies to understand the effects of UV filters on marine life and potential risks to human health.
A recent study found that autophagy, a natural defense mechanism in cells, is less efficient in female eggs with moderate or severe DNA damage. Boosting autophagy can improve egg quality and reduce the risk of miscarriage and birth defects. The study's findings offer new directions for improving reproductive health.
A POSTECH research team developed a novel multidimensional sampling theory to overcome limitations of flat optics. Their study identifies constraints of conventional sampling theories and presents an innovative anti-aliasing strategy, significantly enhancing optical performance.
A team from Osaka Metropolitan University has developed a crystal patterning method that controls the position and orientation of photochromic crystals, known as diarylethenes. This breakthrough allows for the creation of convex structures with precise control over crystal shape and size.
Scientists have identified flickering loops in the solar atmosphere that signal impending solar flares. The loops' brightness variability can be measured to predict flares with up to 80% accuracy, potentially providing 2-6 hours of warning time for astronauts and technology.
The Department of Energy's new research centers, led by SLAC National Accelerator Laboratory, aim to make microelectronics more energy efficient and operate in extreme environments. Researchers will focus on innovating material design, devices, and systems architectures to push computing and sensing capabilities.
A new formula protects against both UV light and heat from the sun using radiative cooling. The prototype sunblock kept human skin up to 10.8 F (6.0 C) cooler than bare skin, demonstrating SPF of about 50 and no irritation.
A team of international researchers successfully controlled the quantum states of matter at ultrafast time scales and its chemical properties with extreme precision using light in the extreme ultraviolet. The technique was demonstrated on helium atoms, enabling the enhancement of selected quantum processes while suppressing others.
A commonly used mathematical approach to describe fluorescence evolution in solids cannot be applied to liquids, where molecules are free to move. This can lead to erroneous interpretations of experimental data and wrong conclusions.
Researchers at King's College London developed a new method to produce biofuels from fatty acids in cooking oil, making it as effective as diesel with improved efficiency. The technology uses enzymes to break down fatty acids into alkenes, reducing the need for conventional catalysts and toxic chemicals.
Researchers discovered that heart cockle shells have translucent areas with hair-thin strands that deliver specific wavelengths of light into the bivalves' tissues. This natural system filters out bad wavelengths and channels in optimal wavelengths for photosynthesis, benefiting the clams' symbiotic algae.
A geospatial analysis found that areas with more tanning bed facilities experience higher rates of melanoma. The study identified six high-risk clusters and seven low-risk clusters, suggesting a significant association between access to tanning beds and increased melanoma incidence.
Researchers at Tel Aviv University have discovered a new cancer mechanism that prevents the immune system from attacking tumors. The discovery was made by reversing this mechanism, which stimulates the immune system to fight cancer cells, including those resistant to prevailing forms of immunotherapy.
A new type of cationic epoxy photoresist exhibits greater sensitivity to two-photon laser exposure, enabling fast writing speeds and fine features. The material was developed by a research team led by Professor Cuifang Kuang, who achieved lithography speeds of 100 mm/s and resolution of 170 nm.
A new model suggests that the ancient Earth's atmosphere was rich in metallic iron and hydrogen, with methane shielding ultraviolet (UV) radiation. This shielded UV radiation, reducing water vapor oxidation and enhancing organic layer formation. Organics could have formed a 'soup' of building blocks for life to emerge.
Next-generation passive radiative cooling technology offers an electricity- and refrigerant-free cooling solution, potentially reducing surface temperature by at least 2°C. The innovation has promising application potential in buildings, roads, and clothing, addressing issues such as urban heat islands and greenhouse gas emissions.
Researchers at ETH Zurich have set a new record for the strongest laser pulses, surpassing previous records by over 50%, using a special arrangement of mirrors and a semiconductor mirror. The pulses can be used to create high harmonic frequencies up to X-rays, enabling fast processes in the attosecond range.
A new study found that benzoyl peroxide acne treatments lack stability and degrade into carcinogenic benzene when exposed to heat, UV light, or stored at room temperature. Refrigeration may be a practical solution to minimize unnecessary exposure until safer formulations are developed.
A randomized clinical trial found home-based phototherapy to be as effective as office-based treatment for plaque and guttate psoriasis, while reducing patient burden. The study suggests that this approach could become a viable option for everyday clinical practice.
Researchers from Okayama University successfully controlled the population of the thorium-229 isomeric state using X-rays, a crucial step towards building a compact and portable nuclear clock. This achievement demonstrates the potential for nuclear clocks to advance fundamental physics research and other applications such as GPS systems.
A study analyzing long-term melanoma data reveals that men and women experience different patterns of melanoma development, with women having higher rates in early life but later in life. The research also shows that melanomas arise most commonly on the trunk and head/neck in men, while on limbs in women.
Researchers, including WVU astronomer Emmanuel Fonseca, use radio pulsars to detect gravitational waves generated by massive objects. The study will merge data from the Green Bank Telescope and CHIME radio telescope to achieve full coverage of each wave, revealing information about phenomenon and objects in distant galaxies.
A recent study in Sweden found a significant decline in both melanoma incidence and mortality among individuals aged 30-49. The causes of this downward trend are unclear but may be attributed to increased UV protection, public health campaigns, demographic changes, or advancements in melanoma treatment.
Researchers at Nagoya University developed a new type of label that uses fluorescent dyes to create uncrackable coded tags. These labels produce unique visual patterns that are difficult to replicate without specialized tools and knowledge.
A study suggests that higher levels of UV radiation in areas with limited sunshine are associated with a drop in deaths due to cardiovascular disease and cancer. Sunbed use was also found to be linked to a reduced risk of these deaths, but further research is needed to confirm the findings.
Researchers at Tokyo University of Science discovered a natural tyrosinase inhibitor from Corynebacterium tuberculostearicum that inhibits melanin synthesis and provides an alternative to toxic hydroquinone-based products. The compound, cyclo(L-Pro-L-Tyr), exhibits low toxicity and potential benefits for hyperpigmentation treatment.
Researchers have discovered that far-ultraviolet radiation from stellar flares on red dwarf stars can be three times more energetic than previously thought. This finding challenges existing models of exoplanet habitability and suggests that many stars may pose a risk to the potential for life on planets around them.
Researchers have observed symmetry-breaking dynamics in ionized CO₂ dimers, leading to the formation of CO₃ moieties. This phenomenon has significant implications for atmospheric chemistry and astrochemistry, providing new insights into molecular behavior under extreme conditions.
The COVID-19 pandemic highlighted the importance of proper ventilation in buildings to prevent airborne infection transmission. Experts recommend developing interdisciplinary knowledge, investing in mechanical ventilation systems, and implementing equivalent ventilation methods for existing buildings.
The study enhances UV light absorption and emission properties of monolayer tungsten disulfide by incorporating titanium nitride and graphitic carbon nitride quantum dots. This approach overcomes the limitations of 2D materials, enabling a significant enhancement in light emission under UV light excitation.
Researchers from the Max Born Institute have developed a method to manipulate magnetism using circularly polarized XUV radiation, generating large magnetization changes without thermal effects. The study demonstrates an effective non-thermal approach to controlling magnetism on ultrafast time scales.
A recent study by Johns Hopkins Medicine reveals that the ZAK protein is a critical player in the cell's response to UV radiation damage, determining whether cells live or die. The research, published in Cell, suggests that companies developing drugs targeting ribosomes may find ZAK to be a driver of cell death across cancer types.