Results 141 to 150 of about 7,767,873 (255)

A new activity index for comets [PDF]

, 1991
An activity index, AI, is derived from observational data to measure the increase of activity in magnitudes for comets when brightest near perihelion as compared to their inactive reflective brightness at great solar distances.
Whipple, Fred L.
core  

Influence of Storage Time on Functional Bulk Properties of Low‐Pressure Oxygen/Argon Plasma Modified Polypropylene Fabric

Journal of Applied Polymer Science, Volume 143, Issue 33, September 5, 2026.
Treatment of polypropylene fabric in oxygen plasma was used to impart the fabric surface with more hydrophilic surface properties. Changes in bulk properties were minimal as the modification mainly affected the fabric surface. Bulk fabric properties water retention, moisture content and wicking were monitored over a period of 33 days.
Floriana Constantin, Tung Pham, Thomas Bechtold   +2 more
wiley   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

Advanced Materials, Volume 38, Issue 51, 11 September 2026.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora, Seung Ju Choi, Jaeki Jeong, Silvia Orecchio, Inés García‐Benito, Manuel Pérez‐Escribano, Joaquín Calbo, Likai Zheng, Minseop Byun, Seyeong Song, Gi‐Hwan Kim, Shaik M. Zakeeruddin, Seog‐Young Yoon, Yimhyun Jo, Agustín Molina‐Ontoria, Enrique Ortí, Nazario Martín, Michael Grätzel   +17 more
wiley   +1 more source

Targeting a Myeloid–Regulatory B Cell Network Reverses Immune Paralysis in Periprosthetic Joint Infections

Advanced Science, Volume 13, Issue 51, 14 September 2026.
Periprosthetic joint infection establishes a sophisticated immunosuppressive network between CXCR4+ PMN‐MDSCs and Bregs, inducing profound CD8+ T cell paralysis. Alendronate effectively disrupts this CXCR4+ PMN‐MDSC–Breg axis by targeting STAT3, thereby restoring local immune surveillance.
Jintao Wu, Shutao Zhang, Yumin Lin, Juyang Jiao, Zhiwei Fu, Qimin Hong, Ziyi Zhao, Xinhua Qu, Fei Su, Bing Yue   +9 more
wiley   +1 more source

Impact of Methylparaben on Cumulus Cell DNA Integrity and Porcine Oocyte Developmental Competence In Vitro

Journal of Applied Toxicology, Volume 46, Issue 9, Page 2985-2996, September 2026.
ABSTRACT Parabens (PBs) are compounds widely used as preservatives in personal care products, food, and pharmaceuticals. Methylparaben (MePB) is the most used by different industries due to its chemical properties and low cost. The high daily human exposure to these compounds has raised concerns about their potential effects on health, particularly on ...
Yenny Ramírez‐Jara, Brenda Casado, Miguel Betancourt, Adyeni Barajas‐Salinas, Eduardo Casas, Gabriela Hurtado‐Alvarado, Juan José Rodríguez‐Mercado, Alma López, Iván Bahena, Lizbeth Juárez‐Rojas, Leticia González‐Núñez, Fahiel Casillas   +11 more
wiley   +1 more source

Acrylamide‐Induced Developmental and Molecular Toxicity in Drosophila melanogaster: The Role of Vanillic Acid in CncC/Keap1 Modulation

Journal of Biochemical and Molecular Toxicology, Volume 40, Issue 9, September 2026.
Vanillic acid, a dietary phenolic, dose‐dependently protects Drosophila melanogaster from acrylamide‐induced oxidative damage, DNA strand breaks, and developmental toxicity by modulating CncC/Keap1 redox signaling—establishing vanillic acid as a candidate natural protective agent against a major environmental contaminant.
Fahriye Zemheri‐Navruz, Sinan Ince, Gamze Ataman   +2 more
wiley   +1 more source

A novel mechanism for outbursts of Comet 17P/Holmes and other short-period comets

, 2007
A mechanism is proposed to explain the outburst of comet 17P/Holmes based on; (a) oxidation of water within the porous surface of the comet nucleus to form hydrogen peroxide (H2O2) through exposure to UV radiation, to energetic solar-wind particles and to cosmic radiation, (b) concentration of the H2O2 component through solid-, liquid- and gas-phase ...
openaire   +2 more sources

Assessment of Genotoxic, Oxidative Stress and Histopathological Effects of Azo Dye Acid Red 119 on Blood and Gill of Freshwater Fish Channa punctata

Journal of Biochemical and Molecular Toxicology, Volume 40, Issue 9, September 2026.
Azo dye Acid Red 119 exerts marked DNA damage, oxidative stress, antioxidant enzymatic, and histopathological alterations in the blood and gills of freshwater fish Channa punctata, underscoring the urgent need for stricter effluent regulation and sustainable treatment strategies in textile industries.
Harpal Kaur, Divya Saini, Aditi Khanna, Pooja Chadha   +3 more
wiley   +1 more source

Advances in Cold‐Plasma Technology for Legume Seeds: Mechanisms, Nutritional Quality Improvement, Food Safety and Sustainable Agriculture

Legume Science, Volume 8, Issue 3, September 2026.
ABSTRACT Cold plasma (CP), a nonthermal ionised gas rich in reactive oxygen and nitrogen species (RONS), has emerged as a sustainable technology for enhancing legume production and quality. This review summarises current advances in CP applications in legumes, focusing on seed germination, seedling vigour, nutrient enhancement, antinutrient reduction ...
Jannatul Ferdous, Joyairia Tabassum, Md. Hassan Bin Nabi, Abid Hassan Arnab, Wahidu Zzaman, Iftekhar Ahmad   +5 more
wiley   +1 more source

Tempel's Comet of Short Period [PDF]

Monthly Notices of the Royal Astronomical Society, 1873
openaire   +1 more source