Results 151 to 160 of about 5,039 (253)

Three New Calcium Formate Reference Materials for δ13C Measurements and a Redetermination of the R(13C/12C) Ratio for VPDB Based on Proton Nuclear Magnetic Resonance Measurements

Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale Isotope ratio mass spectrometry (IRMS) and proton nuclear magnetic resonance (1H NMR) spectroscopy are independent techniques for determining the isotope ratio R(13C/12C) in organic compounds. However, the lack of suitable reference materials has limited intercalibration of results from these methods.
David W. Hoffman, Cornelia Rasmussen, Arndt Schimmelmann, Lauren T. Reid, Haiping Qi, Tyler B. Coplen   +5 more
wiley   +1 more source

Study on the Structure-Luminescence Relationship and Anti-Counterfeiting Application of (Ca,Sr)-Al-O Composite Fluorescent Materials. [PDF]

Nanomaterials (Basel)
Lv J, Wang J, Qi Y, Hu J, Li H, Wang C, Cheng X, Pan D, Li Z, Li J.   +9 more
europepmc   +1 more source

Impacts of the One Big Beautiful Bill Act on African Public Health Systems

Public Health Challenges, Volume 5, Issue 3, September 2026.
ABSTRACT The enactment of the One Big Beautiful Bill Act (OBBBA) in July 2025 represents a fundamental shift in United States global health financing, with significant implications for African public health systems. For more than three decades, US development assistance for health particularly through initiatives such as the President's Emergency Plan ...
Majani Edward, Jusu Musa, Mlemile Stephen, Sam Soko Bundu, Caroline Nakasita Alex, Ameh Wisdom Owoicho, Naima Mbwana   +6 more
wiley   +1 more source

Scalable synthesis and optical tuning of CsPbBr₃ nanocrystal inks for dual-color anti-counterfeiting applications. [PDF]

Nanoscale Adv
Sun T, Zhao Y, Fan Y, Guo X, Tang Z, Wang M.   +5 more
europepmc   +1 more source

Online Andrology: Real‐World Status Quo of Patients’ Online Information Sources and Comparison With Large Language Models in Germany

Andrology, Volume 14, Issue 6, Page 1823-1830, September 2026.
ABSTRACT Background The internet, including websites and large language models (LLMs), is an increasingly important information resource for medical patients. However, information quality varies, potentially leading to misinformation. Andrological patients may particularly rely on online sources due to the sensitive nature of their conditions ...
Traeger Max, Gloeckler Paulina, Hess Jochen, Kranz Jennifer, Morgenstern Saskia, Himmelsbach Ruth, Gratzke Christian, Schlager Daniel   +7 more
wiley   +1 more source

Color tuning in lanthanide ions doped upconversion nanocrystals. [PDF]

RSC Adv
Zhang J, Wang X, Jin Y, Li B, Liu L, Zhang J.   +5 more
europepmc   +1 more source

Law and Ethics of Nanotechnology: Traditional Legal Tools Advancing Nanomedicine

physica status solidi (a), Volume 223, Issue 15, 5 August 2026.
Science fiction from the last decades is rapidly becoming science in daily life. For example, nanotechnology does cool things like creating driverless cars for people who are blind and storing solar energy to drive electric cars. Nanotechnology makes possible 3D printing of housing, clothing, and food and miraculous treatments for previously incurable ...
Ilise Feitshans
wiley   +1 more source

Paintable soft photonic architectures featuring multi-stable light-actuation. [PDF]

Light Sci Appl
Hu H, Wan W, Liu X, Liang X, Yuan C, Ren Y, Zhan Y, Zheng ZG, Zhu WH.   +8 more
europepmc   +1 more source

Unity Quantum Yield of High‐Entropy Quantum Dots Composited With Photonic Crystals for Information Encryption

Advanced Science, Volume 13, Issue 43, 3 August 2026.
This study first extends the high‐entropy concept to I‐III‐VI quantum dots (QDs) and synthesizes CZCrGSe/ZnSe/ZnS core/shell/shell QDs with a record photoluminescence quantum yield (PLQY) of 100%. Their ZnSe/ZnS double shell efficiently passivates defects and boosts structural stability.
Maoyuan Huang, Ziqiang Tian, Binkun Xie, Haiyang Li, Bo Tan, Chang He, Shiliang Mei, Wanlu Zhang, Changchun Wang, Ruiqian Guo   +9 more
wiley   +1 more source

Excitation-dependent circularly polarized luminescence triggered by selective excitation of achiral dichroic dyes in cholesterol liquid crystals. [PDF]

Chem Sci
Li L, Jiang P, Chen L, Li Y, Cheng Y.
europepmc   +1 more source