The classification of antigens into TD, TI-1 and TI-2 varieties raises the question of whether responses to these antigens are produced by distinct or identical subpopulations of B cells. In the present study we have examined the extent of intraclonal specificity variation in the progeny of PFC appearing after stimulation with two unrelated antigens. Mouse lymphoid cells were stimulated with pairs of TD and TI antigens, PFC were individually cultured and daughter PFC examined for their specificity. In all combinations used, PFC responding to TD antigen engendered, after 48 h of culture, a high frequency of PFC daughters expressing one or the other antibody specificity, notwithstanding the specificity of parental PFC. However, PFC responding to TI antigens seemed less subject to variation in specificity, and PFC daughters engendered after a 48 h culture period were, in the majority, of the parental specificity. These results are analysed in relation to different subpopulations of B cells.
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http://dx.doi.org/10.1111/j.1744-313x.1986.tb01120.x | DOI Listing |
Inorg Chem
December 2024
Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan.
Layered oxides, such as NaMeO (Me = transition metal, = 0-1), are believed to be the most promising positive electrode materials for Na-ion batteries because of their high true density, large capacities, high working potentials, and reversibility. This study identified Na[NiMnFeTi]O as an optimal composition for use as an O3-type positive electrode material in Na-ion batteries on the basis of a comprehensive phase diagram, where the end members of the triangular phase diagram were Na[NiMn]O, Na[NiTi]O, and the hypothetical composition Na[NiFe]O. By investigating the effects of the partial substitution of Mn with Fe and Ti within the Na[NiMnFeTi]O system, we optimized the capacity, working potential, and cycle performance.
View Article and Find Full Text PDFDalton Trans
October 2024
Key Laboratory of Organic Compound Pollution Control Engineering (MOF), School of Environmental and Chemical Engineering, Shanghai University, No. 99, Shangda Road, Shanghai 200444, China.
The utilization of visible light in photocatalytic semiconductors is restricted by the presence of a wide energy bandgap and fast electron-hole pair recombination. This study aims to address this limitation by synthesizing nitrogen- and cation-doped CsTiO at varying temperatures and subsequently analyzing the photocatalytic performance and mechanism. The optical experimental findings indicate that the co-doping of N/M (where M represents Zn, Co, or Cu) can considerably decrease the energy bandgap of CsTiO by regulating the energy band position and effectively suppressing the recombination of photogenerated carriers.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2024
Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
All-solid-state batteries with oxide electrolytes and high-nickel layered oxide cathodes (LiNiCoMnO and LiNiCoAlO, + + = 1, ≥ 60%) have received widespread attention owing to their high energy density and high safety. However, they generally suffer from interfacial structural instability when coupled with solid-state electrolytes, which strongly diminishes the longevity of the battery. In this work, we propose adding a sacrificial additive C to the catholyte buffer layer between LiAlTi(PO) (LATP) and LiNiCoMnO (NCM811) to enhance the electrochemical stability under high-voltage operating conditions.
View Article and Find Full Text PDFMed Phys
November 2024
Division of Physics and Biophysics, Department of Radiation Oncology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts, USA.
Background: Stereotactic MR-guided Adaptive Radiation Therapy (SMART) dose painting for hypoxia has potential to improve treatment outcomes, but clinical implementation on low-field MR-Linac faces substantial challenges due to dramatically lower signal-to-noise ratio (SNR) characteristics. While quantitative MRI and T mapping of hypoxia biomarkers show promise, T-to-noise ratio (TNR) optimization at low fields is paramount, particularly for the clinical implementation of oxygen-enhanced (OE)-MRI. The 3D Magnetization Prepared (2) Rapid Gradient Echo (MP2RAGE) sequence stands out for its ability to acquire homogeneous T-weighted contrast images with simultaneous T mapping.
View Article and Find Full Text PDFACS Appl Nano Mater
July 2024
Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, Mlynska dolina, 84215 Bratislava, Slovakia.
Herein, we report for the first time the use of ternary oxide nanoheterostructure photocatalysts derived from (Nb , Ti )CT MXene in the treatment of water. Three different compositions of binary MXenes, viz., (TiNb)CT , (TiNb)CT , and (TiNb)CT (with T = OH, F, and Cl), were used as single-source precursor to produce TiNbO -3:1, TiNbO -1:1, and TiNbO -1:3 by controlled-atmosphere thermal oxidation.
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