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Carbon nanotubes (CNTs) are promising blocks for building advanced yarns with unique structural and functional attributes. However, the complexity of fabrication and high cost has hindered the widespread adoption of CNT yarns. In this study, a rapid and continuous twisting wet spun yarn strategy to produce highly densified CNT yarns is presented. The method involves effectively dispersing CNTs in the surfactant dispersion, swiftly removing the surfactant in the coagulation bath and twisting treatment to effectively improve the density of yarn and the orientation of CNT. Detailed characterizations on the influence of each spinning conditions reveal that twisting treatment significantly enhances the packing density of yarns, improves the orientation of CNTs, and mitigates the impact of impurities on conductivity. The resulting CNT yarns exhibit a remarkable tensile strength of 600 MPa, a Young's modulus of ≈40 GPa, and a high conductivity of 8990 S cm−1. When utilized as a yarn heater, the CNT yarn demonstrates an ultra‐fast electrothermal response of over 1000 °C s−1 at a low operating voltage of 5 V. Impressively, the mechanical properties of CNT yarns show good stability during heating. This study provides a perspective of structural engineering for the large‐scale preparation of high‐performance CNT yarns. [ABSTRACT FROM AUTHOR]

Multiple genetic loci have been reported for progeroid syndromes. However, the molecular defects in some extremely rare forms of progeria have yet to be elucidated. Here, we report a 21-year-old man of Chinese ancestry who has an autosomal recessive form of progeria, characterized by severe dwarfism, mandibular hypoplasia, hyperopia, and partial lipodystrophy. Analyses of exome sequencing data from the entire family revealed only 1 rare homozygous missense variant (c.86C>T; p.Pro29Leu) in TOMM7 in the proband, while the parents and 2 unaffected siblings were heterozygous for the variant. TOMM7, a nuclear gene, encodes a translocase in the outer mitochondrial membrane. The TOMM complex makes up the outer membrane pore, which is responsible for importing many preproteins into the mitochondria. A proteomic comparison of mitochondria from control and proband-derived cultured fibroblasts revealed an increase in abundance of several proteins involved in oxidative phosphorylation, as well as a reduction in abundance of proteins involved in phospholipid metabolism. We also observed elevated basal and maximal oxygen consumption rates in the fibroblasts from the proband as compared with control fibroblasts. We concluded that altered mitochondrial protein import due to biallelic loss-of-function TOMM7 can cause severe growth retardation and progeroid features., Introduction In the last 2 decades, considerable progress has been made in identifying the molecular genetic basis of several progeroid syndromes, including mandibuloacral dysplasia (MAD), mandibular hypoplasia, deafness and progeroid [...]

Zinc oxide (ZnO) has been widely acknowledged as a highly effective photocatalyst for the degradation of organic pollutants. In this study, we presented silver nanoparticles (AgNPs) embedded ZnO foam photocatalyst (Ag−ZnO) on glass substrates by the chemical bath in‐situ co‐deposition method. Our findings demonstrat that at low Ag‐loading content, metallic Ag0 NPs are embedded within the ZnO foam, while at high Ag‐loading content, they accumulates increasingly from inside to the surface of the foam. With the increase of AgNPs loading from 0.1 mM to 1.5 mM, the absorption of Ag−ZnO foams in the visible light region gradually enhances. The photocatalytic degradation efficiency of rhodamine B (RhB) is the highest in Ag−ZnO foams when the Ag loading concentration reaches 0.8 mM, suggesting an optimal content of Ag for enhanced performance. This trend is attributed to the photo‐induced charge transfer behavior of Ag−ZnO samples. The AgNPs embedded inside the ZnO foam enhance the separation of photo‐induced charges and prevent their recombination. As a result, Ag−ZnO(0.8 mM) foam with more photo‐induced holes participate in the photocatalytic reaction, leading to a remarkably high photocatalytic activity. [ABSTRACT FROM AUTHOR]

A novel multi‐color emitting Na2YMg2V3O12:Sm3+ phosphor was synthesized using a solid‐state reaction, and its crystal structure, luminescence properties, and thermal stability were studied. Charge transfer within the (VO4)3− groups in the Na2YMg2V3O12 host led to a broad emission band between 400 and 700 nm, with a maximum at 530 nm. The Na2Y1−xMg2V3O12:xSm3+ phosphors exhibited a multi‐color emission band under 365 nm near‐ultraviolet (near‐UV) light, consisting of the green emission of the (VO4)3− groups and sharp emission peaks at 570 nm (yellow), 618 nm (orange), 657 nm (red), and 714 nm (deep red) of Sm3+ ions. The optimal doping concentration of Sm3+ ions was found to be 0.05 mol%, and the dipole–dipole (d–d) interaction was primarily responsible for the concentration quenching phenomenon. Using the acquired Na2YMg2V3O12:Sm3+ phosphors, commercial BaMgAl10O17:Eu2+ blue phosphor, and a near‐UV light‐emitting diode (LED) chip, a white‐LED lamp was designed and packaged. It produced bright neutral white light, manifesting a CIE coordinate of (0.314, 0.373), a color rendering index (CRI) of 84.9, and a correlated color temperature (CCT) of 6377 K. These findings indicate the potential of Na2YMg2V3O12:Sm3+ phosphor to be used as a multi‐color component for solid‐state illumination. [ABSTRACT FROM AUTHOR]

TRIM33 is a chromatin reader required for mammalian mesendoderm differentiation after activation of Nodal signaling, while its role in mESCs is still elusive. Here, we report that TRIM33 co‐localizes with promyelocytic leukemia nuclear bodies (PML‐NBs) specifically in mESCs, to mediate Nodal signaling‐directed transcription of Lefty1/2. We show that TRIM33 puncta formation in mESCs depends on PML and on specific assembly of PML‐NBs. Moreover, TRIM33 and PML co‐regulate Lefty1/2 expression in mESCs, with both PML protein and formation of mESCs‐specific PML‐NBs being required for TRIM33 recruitment to these loci, and PML‐NBs directly associating with the Lefty1/2 loci. Finally, a TurboID proximity‐labeling experiment confirmed that TRIM33 is highly enriched only in mESCs‐specific PML‐NBs. Thus, our study supports a model in which TRIM33 condensates regulate Nodal signaling‐directed transcription in mESCs and shows that PML‐NBs can recruit distinct sets of client proteins in a cell‐context‐dependent manner. Synopsis: The chromatin reader TRIM33 is involved in cell fate decisions under different cell contexts, but the molecular details are still elusive. Here, TRIM33 is found to co‐condense with PML nuclear bodies (PML‐NBs) in mESCs to transcriptionally regulate Lefty1/2 expression upon Nodal signaling. TRIM33 is recruited into PML‐NBs selectively in mESCs, but not in differentiated cells.PML‐NB client protein composition differs between mESCs, oxidative stress‐treated mESCs, and differentiated cells.PML‐NBs regulate expression of gene clusters, including Lefty1/2 loci in mESCs.PML‐NBs form a regulatory hub for TRIM33 control of Lefty1/2 expression upon Nodal signaling. [ABSTRACT FROM AUTHOR]

In this study, an efficient nano-zero-valent iron supported by alkali-modified sludge biochar (nZVI@NaOH-SBC) composites were synthesized by a liquid-phase reduction method for Cu2+ removal. The preparation conditions (sodium hydroxide concentration, pyrolysis temperature, solid–liquid ratio, and modification time) of sludge biochar (SBC) were optimized by orthogonal experiments. The results showed that the best SBC was prepared under the conditions of sodium hydroxide concentration of 3 mol/L, pyrolysis temperature of 500 °C, a solid–liquid ratio of 1:20, and modification time of 24 h, and a maximum adsorption capacity was 183.22 mg/g, which is 2.43 times that of the pristine sludge biochar. The adsorption behavior was in accordance with a pseudo-second-order kinetic model, indicating that the removal of Cu2+ was mainly affected by chemisorption. The adsorption isotherm conformed to the Langmuir model, and the maximum adsorption capacity of Cu2+ was 358.42 mg/g at pH = 5, and 25 °C. Reusability tests confirmed the good reusability and stability of the material. Batch experiments and characterization reveal that the mechanism of Cu removal by nZVI@NaOH-SBC composites involves multiple processes: adsorption, precipitation, electrostatic attraction, and reduction. This study proposes a new biochemical adsorbent, which provides a good choice for the treatment of copper-containing wastewater and the resource utilization of sludge. [ABSTRACT FROM AUTHOR]

A novel multi-color emitting Na 2 YMg 2 V 3 O 12 :Sm 3+ phosphor was synthesized using a solid-state reaction, and its crystal structure, luminescence properties, and thermal stability were studied. Charge transfer within the (VO 4 ) 3- groups in the Na 2 YMg 2 V 3 O 12 host led to a broad emission band between 400 and 700 nm, with a maximum at 530 nm. The Na 2 Y 1-x Mg 2 V 3 O 12 :xSm 3+ phosphors exhibited a multi-color emission band under 365 nm near-ultraviolet (near-UV) light, consisting of the green emission of the (VO 4 ) 3- groups and sharp emission peaks at 570 nm (yellow), 618 nm (orange), 657 nm (red), and 714 nm (deep red) of Sm 3+ ions. The optimal doping concentration of Sm 3+ ions was found to be 0.05 mol%, and the dipole-dipole (d-d) interaction was primarily responsible for the concentration quenching phenomenon. Using the acquired Na 2 YMg 2 V 3 O 12 :Sm 3+ phosphors, commercial BaMgAl 10 O 17 :Eu 2+ blue phosphor, and a near-UV light-emitting diode (LED) chip, a white-LED lamp was designed and packaged. It produced bright neutral white light, manifesting a CIE coordinate of (0.314, 0.373), a color rendering index (CRI) of 84.9, and a correlated color temperature (CCT) of 6377 K. These findings indicate the potential of Na 2 YMg 2 V 3 O 12 :Sm 3+ phosphor to be used as a multi-color component for solid-state illumination., (© 2023 John Wiley & Sons Ltd.)