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Synthesis and diverse crystal packing in o-, m- and p-bis(carbonylthioureido)benzenes containing bisferrocenes.
Acta Crystallogr C Struct Chem
February 2025
Institute of Applied Chemistry, Shanxi University, Wucheng, Taiyuan, Shanxi 030006, People's Republic of China.
Three bisferrocene-based bis(acylthiourea) positional isomers, namely, 1,2-bis(ferrocenylcarbonylthioureido)benzene (1), 1,3-bis(ferrocenylcarbonylthioureido)benzene (2) and 1,4-bis(ferrocenylcarbonylthioureido)benzene (3), all [Fe(CH)(CHNOS)], have been synthesized via facile nucleophilic addition reactions of 2.3 equivalents of ferrocenoyl isothiocyanate with o-, m- and p-phenylenediamine, respectively. The structures of the three new synthesized isomers were fully characterized by H NMR, C NMR, IR and UV-Vis spectroscopy, elemental analyses and cyclic voltammetry.
View Article and Find Full Text PDFStructure and mechanism of biosynthesis of Streptococcus mutans cell wall polysaccharide.
Nat Commun
January 2025
Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA.
Streptococcus mutans, the causative agent of human dental caries, expresses a cell wall attached Serotype c-specific Carbohydrate (SCC) that is critical for cell viability. SCC consists of a polyrhamnose backbone of →3)α-Rha(1 → 2)α-Rha(1→ repeats with glucose (Glc) side-chains and glycerol phosphate (GroP) decorations. This study reveals that SCC has one predominant and two more minor Glc modifications.
View Article and Find Full Text PDFParental neglect and social media addiction of adolescents: The chain mediation effect of basic psychological need and personal growth initiative.
J Pediatr Nurs
January 2025
Department of Psychological Nursing, Harbin Medical University, Daqing, Heilongjiang Province, China.
Purpose: This study aimed to explore the relationship between parental neglect and adolescent social media addiction and its underlying mechanism.
Design And Methods: A cross-sectional design was used in this study. A total of 792 middle school students participated.
Metal-organic cages improving microporosity in polymeric membrane for superior CO capture.
Sci Adv
January 2025
CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
Mixed matrix membranes, with well-designed pore structure inside the polymeric matrix via the incorporation of inorganic components, offer a promising solution for addressing CO emissions. Here, we synthesized a series of novel metal organic cages (MOCs) with aperture pore size precisely positioned between CO and N or CH. These MOCs were uniformly dispersed in the polymers of intrinsic microporosity (PIM-1).
View Article and Find Full Text PDFStandard observation plane annotation for diagnosis of ossicular chain in the temporal bone CT images.
Med Biol Eng Comput
January 2025
Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
Temporal bone CT is an essential technique for diagnosing ossicular chain trauma, and the location of standard observation planes (SOP) is the foundation of imaging diagnosis. The ossicular chain is small in volume, and there are about 11 standard observation planes for ossicular chain diagnosis, so it is a professional and time-consuming task to label SOPs accurately. An automatic annotation method of SOP is proposed.
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