FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 12
·4823-4830
·
IF 2.2
Cao Jiandong,Liu Hailiang,Chen Qinjia,Bai Yongxiao
Carbon fiber reinforced polyolefin (CFRPO) composites have been widely applied in many engineering fields owing to their high specific strength and stiffness. However, carbon fiber (CF) with a chemically inert surface and low surface energy results in the weak interfacial interaction and mechanical properties of CFRPO composites. In this work, thermally reduced graphene was coated on CF with poly(diallyldimethylammonium chloride) (PDDA) as a modifier and coupling agent to improve the interfacial strength between CF and the matrix. After incorporated in linear low-density polyethylene (LLDPE) by melt compounding, the yield strength, yield modulus and thermal conductivity of modified CF reinforced polyethylene (LLDPE/CF-PLG) composite were increased by 18.18%, 16.48% and 5.27%, respectively, and the volume resistivity was decreased by 35.32% compared with LLDPE/CF at 30 wt.% content. The characterization results demonstrate that the enhancement of mechanical properties is attributed to the increased specific surface area, surface roughness and oxygen-containing functional groups on the surface of CF-PLG. This strategy provides a new approach for the enhancement of CF reinforced polymer composites.
✓ 已验证
产品关联
DOI
高影响因子
BMC BIOLOGY
·
2024
·Vol. 22
·期 1
·1-19
·
IF 4.4
Jiang Hexiang,Sun Yi,Li Fengyang,Yu Xibing,Lei Siyu,Du Sulan,Wu Tong,Jiang Xuan,Zhu Junhui,Wang Jun,Ji Yalu,Li Na,Feng Xin,Gu Jingmin,Han Wenyu,Zeng Lei,Lei Liancheng
Background Ribosomal protein SA (RPSA) of human brain microvascular endothelial cells (HBMECs) can transfer from the cytosol to the cell surface and act as a receptor for some pathogens, including Streptococcus suis serotype 2 (SS2), a zoonotic pathogen causing meningitis in pigs and humans. We previously reported that SS2 virulence factor enolase (ENO) binds to RPSA on the cell surface of HBMECs and induces apoptosis. However, the mechanism that activates RPSA translocation to the cell surface and induces ENO-mediated HBMEC apoptosis is unclear.Results Here, we show that RPSA localization and condensation on the host cell surface depend on its internally disordered region (IDR). ENO binds to the IDR of RPSA and promotes its interaction with RPSA and vimentin (VIM), which is significantly suppressed after 1,6-Hexanediol (1,6-Hex, a widely used tool to disrupt phase separation) treatment, indicating that ENO incorporation and thus the concentration of RPSA/VIM complexes via co-condensation. Furthermore, increasing intracellular calcium ions (Ca2+) in response to SS2 infection further facilitates the liquid-like condensation of RPSA and aggravates ENO-induced HBMEC cell apoptosis.Conclusion sTogether, our study provides a previously underappreciated molecular mechanism illuminating that ENO-induced RPSA condensation activates the migration of RPSA to the bacterial cell surface and stimulates SS2-infected HBMEC death and, potentially, disease progression. This study offers a fresh avenue for investigation into the mechanism by which other harmful bacteria infect hosts via cell surfaces’ RPSA.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOLOGICAL TRACE ELEMENT RESEARCH
·
2024
·
IF 3.4
Su Yue,Li Ming,Xie Honglei,Hou Xin,Zhao Meng,Li Jia,Pan Haowen,Zhang Zexu,Yue Zongyu,Che Wenjing,Liu Lanchun,Cao Jiasen,Liu Peng
Saliva iodine is a useful biochemical marker for evaluating iodine status and controlling iodine-related diseases. This study aims to establish and validate a simple, reliable, and low-cost Sandell-Kolthoff (S-K) method for the determination of iodine in saliva. The method was established by considering the digestion solution type, concentration, dosage, digestion time and temperature, the volume of saliva samples, glass tube size, dosage of arsenious acid solution and ammonium ceric sulfate solution, and warm bath time. Then, the effectiveness of the method was examined by the linearity of the standard curve, detection limit, precision, and accuracy. The 1.5 mL 1 Mol/L ammonium persulfate solution at 100 °C for 90 min, the 200 μL saliva sample, glass tubes of 15 mm × 120 mm, 2.5 mL arsenious acid solution, 0.3 mL ammonium ceric sulfate solution, and 15 min for warm bath was selected to determine saliva iodine. In terms of validation of the S-K method, the linearity method has the linear range of the standard curve from 0 to 300 μg/L and the coefficient of determination ≥ 0.999; the detection limit, when the volume of saliva samples was 0.2 mL, was 4.6 μg/L; for precision, the relative standard deviation was from 0.3 to 2.8%; and for accuracy, the total recovery rate ranged from 92.8 to 107.0%. This S-K method is easy to operate, has good precision and accuracy, and can be used as a method to determine saliva iodine. It has great potential practical value in disease prevention, clinical auxiliary diagnosis, and experimental research.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·
IF 3.5
Sun Haiyang,Ou Junfei,Cheng Liang,Sun Lingyan,Lu Yalin,Liu Wenchang
To improve the deformability of 6061Al–TiC composites, a laminated structure of 6061Al–TiC/6061Al was prepared by combining spark plasma sintering (SPS) and hot roll bonding. T6 treatment was applied to the roll-bonded 6061Al–TiC/6061Al laminated composites. Different contents of TiC nanoparticles were added into the inner 6061Al–TiC composite layers. The effect of the volume fraction of the TiC nanoparticles was revealed on the microstructure characterization, texture evolution and tensile properties. The recrystallization fraction and grain size of the 6061Al–TiC composite layers decreased with increasing TiC nanoparticle volume fraction. The texture in rolled 6061Al–TiC composite layers was characterized by weak Goss and β fiber. After T6 treatment, the texture in the 6061Al was cube component, while the recrystallized grains in the 6061Al–0.2TiC and 6061Al–0.5TiC composite layers exhibited cube and R components, respectively. The tensile strength of the 6061Al–TiC/6061Al laminated composites first increased with the volume fraction of TiC nanoparticles and then decreased when the TiC nanoparticles addition exceeded 0.5 vol%. Whereas, the elongation of the 6061Al–TiC/6061Al laminated composites decreased continuously with increasing the volume fraction of TiC nanoparticles. The ultimate strength and yield strength, respectively reached maximum values of 337 MPa and 316 MPa for the 6061Al–0.5TiC/6061Al laminated composites, and the elongation of the laminated composites was 21.6%. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
Chemistry Africa-A Journal of the Tunisian Chemical Society
·
2024
·
IF 2.3
Wang Wenchao,An Lianhao,Lei Junrong,Li Dan,Shen Zheluan,Wang Hong,Li Qingyong
Pearl powder has been used in medicine and beauty treatment since ancient times in China. However, it is still unclear whether the biological activities of pearl powder are affected by different extraction methods or not. In this study, we determine the total protein yield, protein molecular weight and biological activities including antioxidant, tyrosinase inhibition and melanogenesis inhibition activities and cytotoxicity of different pearl powder extracts prepared by five different preparation methods. The ultrasonic-assisted extraction (UAE) and microwave-assisted extraction (MAE) of pearl powder were optimized by the response surface method based on total protein yield. Compared with solid-liquid extraction (SLE), the optimized UAE and MAE increased the total protein yield without changing protein molecular weight. In addition, the extract by MAE enhanced the tyrosinase inhibition activity and anti-melanogenesis activity slightly. Acidolysis hydrolyzes macromolecular protein into small molecules with obvious cytotoxicity and low activities. Enzymolysis can hydrolyze macromolecular protein into small molecules with high protein yield and improvement of bioactivities. In the determination of the antioxidant assay, the extract prepared by the enzymolysis showed significant activity. These results suggest that protein molecules of the pearl powder extract are degraded appropriately by enzymolysis to smaller molecules to obtain the enhanced biological activities that can be applied in the cosmetic industry.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·
IF 1.5
Zhou Lu-Wei,Chen Kai-Wei,Dai Xiao-Jun,Qiao Tai-Fei,Liu Hong-Yu,Lu Ji-Gen,Wang Peng,Gong Chun-Hui,Deng Shao-Gang,Xia Ming,Ni Fei,Tang Guo-Min,Zhang Yong-Bing,Yang Yi
Cu/Cu 2 O-modified activated carbon composites (Cu/Cu 2 O@AC) were synthesized via an one-step solvothermal method. The characterization results indicated that copper was uniformly dispersed on the surface of AC as nano-sized Cu 0 and Cu(I), which allowed Cu/Cu 2 O to make full contact with I − . The high specific surface area of Cu/Cu 2 O@AC and the affinity of Cu + for I − led to the equilibrium adsorption capacity within forty minutes. Additionally, the removal of trace I − (300 μg L −1 ) at pH = 3 by Cu/Cu 2 O@AC reached 96.4%. This work provides a promising application for the inexpensive and efficient capture of trace iodine from medical wastewater. Graphical abstract We synthesized Cu/Cu 2 O@AC composites for adsorption of iodide ions in solution.
✓ 已验证
产品关联
DOI
高影响因子
CELL RESEARCH
·
2024
·Vol. 34
·期 1
·31-46
·
IF 28.1
Shao Jiawei,Li Shichao,Qiu Xinyuan,Jiang Jian,Zhang Lihang,Wang Pengli,Si Yaqing,Wu Yuhang,He Minghui,Xiong Qiqi,Zhao Liuqi,Li Yilin,Fan Yuxuan,Viviani Mirta,Fu Yu,Wu Chaohua,Gao Ting,Zhu Lingyun,Fussenegger Martin,Wang Hui,Xie Mingqi
Here, we present a gene regulation strategy enabling programmable control over eukaryotic translational initiation. By excising the natural poly-adenylation (poly-A) signal of target genes and replacing it with a synthetic control region harboring RNA-binding protein (RBP)-specific aptamers, cap-dependent translation is rendered exclusively dependent on synthetic translation initiation factors (STIFs) containing different RBPs engineered to conditionally associate with different eIF4F-binding proteins (eIFBPs). This modular design framework facilitates the engineering of various gene switches and intracellular sensors responding to many user-defined trigger signals of interest, demonstrating tightly controlled, rapid and reversible regulation of transgene expression in mammalian cells as well as compatibility with various clinically applicable delivery routes of in vivo gene therapy. Therapeutic efficacy was demonstrated in two animal models. To exemplify disease treatments that require on-demand drug secretion, we show that a custom-designed gene switch triggered by the FDA-approved drug grazoprevir can effectively control insulin expression and restore glucose homeostasis in diabetic mice. For diseases that require instantaneous sense-and-response treatment programs, we create highly specific sensors for various subcellularly (mis)localized protein markers (such as cancer-related fusion proteins) and show that translation-based protein sensors can be used either alone or in combination with other cell-state classification strategies to create therapeutic biocomputers driving self-sufficient elimination of tumor cells in mice. This design strategy demonstrates unprecedented flexibility for translational regulation and could form the basis for a novel class of programmable gene therapies in vivo.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 8
·1-11
·
IF 5.3
Zhang Xinyu,Wang Yue,Gong Mi,Xiong Lihao,Song Jiayi,Chen Sihan,Tong Yuqi,Liu Yu,Li Le,Zhen Deshuai
An upconversion fluorescence sensing platform was developed with upconversion nanoparticles (UCNPs) as energy donors and gold nanoparticles (AuNPs) as energy acceptors, based on the FRET principle. They were used for quantitative detection of uranyl ions (UO 2 2+ ) by amplifying the signal of the hybrid chain reaction (HCR). When UO 2 2+ are introduced, the FRET between AuNPs and UCNPs can be modulated through a HCR in the presence of high concentrations of sodium chloride. This platform provides exceptional sensitivity, with a detection limit as low as 68 pM for UO 2 2+ recognition. We have successfully validated the reliability of this method by analyzing authentic water samples, achieving satisfactory recoveries (89.00%–112.50%) that are comparable to those of ICP-MS. These results indicate that the developed sensing platform has the capability to identify trace UO 2 2+ in complex environmental samples. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PEST SCIENCE
·
2024
·
IF 4.3
Zheng Qun,Yan Wenjuan,Zhu Shiqi,Miao Xiaoran,Wu Jian,Lin Zewei,Huang Suqing,Cheng Dongmei,Xu Hanhong,Zhang Zhixiang,Zhang Peiwen
Gelsemium elegans Benth. ( Loganiaceae ), also known as heartbreak herb, can be used in the manufacture of herbal medicines. Insecticidal activity has also been found and can be used to develop botanical insecticides. This study aimed to reveal the insecticidal mechanism of its extracts against red fire ants and provide strategies for the development of biopesticides and the promotion of green and sustainable agriculture. 16s rRNA, pathohistological, behavioral, and enzyme activity assays were performed to reveal its biological effects, including the effects on non-target organisms. Our results showed that red fire ants exposed to G. elegans extracts exhibited slowed growth, reduced feeding, and decreased aggressiveness. The midgut and its peritrophic membrane of red fire ant were significantly disrupted, the diversity of gut microbial community was reduced, and the balance of microbial composition was disturbed. Significant increases in functional abundance of xenobiotics biodegradation and metabolism pathway and P450s enzyme activity confirmed the toxic stress of G. elegans extract. Functional prediction of Kyoto Encyclopedia of Genes and Genomes pathway showed that the functional abundance of novobiocin biosynthesis, flavonoid biosynthesis, lysosome, proteasome, and wingless/integrated signaling pathways were significantly inhibited in the gut. Besides, G. elegans extracts induced an increase in acetylcholinesterase activity. These results revealed dysregulation of immune system and metabolic functions in red fire ants, as well as toxic effects of G. elegans extracts on physiological functions and nerves. These findings revealed the insecticidal mechanism of G. elegans and supported the development of eco-friendly insecticides for red fire ants.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-22
·
IF 14.7
Bai Mingru,Wang Ting,Xing Zhenyu,Huang Haoju,Wu Xizheng,Adeli Mohsen,Wang Mao,Han Xianglong,Ye Ling,Cheng Chong
The clinical treatments of maxillofacial bone defects pose significant challenges due to complex microenvironments, including severe inflammation, high levels of reactive oxygen species (ROS), and potential bacterial infection. Herein, we propose the de novo design of an efficient, versatile, and precise electron-donable heterojunction with synergetic Ru-Cu pair sites (Ru-Cu/EDHJ) for superior biocatalytic regeneration of inflammatory mandible defects and pH-controlled antibacterial therapies. Our studies demonstrate that the unique structure of Ru-Cu/EDHJ enhances the electron density of Ru atoms and optimizes the binding strength of oxygen species, thus improving enzyme-like catalytic performance. Strikingly, this biocompatible Ru-Cu/EDHJ can efficiently switch between ROS scavenging in neutral media and ROS generation in acidic media, thus simultaneously exhibiting superior repair functions and bioadaptive antibacterial properties in treating mandible defects in male mice. We believe synthesizing such biocatalytic heterojunctions with exceptional enzyme-like capabilities will offer a promising pathway for engineering ROS biocatalytic materials to treat trauma, tumors, or infection-caused maxillofacial bone defects.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Light-Science & Applications
·
2024
·Vol. 13
·期 1
·1-15
·
IF 20.6
Lv Xulong,Liang Yanjie,Zhang Yi,Chen Dongxun,Shan Xihui,Wang Xiao-Jun
Extensive research has been conducted on visible-light and longer-wavelength infrared-light storage phosphors, which are utilized as promising rewritable memory media for optical information storage applications in dark environments. However, storage phosphors emitting in the deep ultraviolet spectral region (200–300 nm) are relatively lacking. Here, we report an appealing deep-trap ultraviolet storage phosphor, ScBO 3 :Bi 3+ , which exhibits an ultra-narrowband light emission centered at 299 nm with a full width at half maximum (FWHM) of 0.21 eV and excellent X-ray energy storage capabilities. When persistently stimulated by longer-wavelength white/NIR light or heated at elevated temperatures, ScBO 3 :Bi 3+ phosphor exhibits intense and long-lasting ultraviolet luminescence due to the interplay between defect levels and external stimulus, while the natural decay in the dark at room temperature is extremely weak after X-ray irradiation. The impact of the spectral distribution and illuminance of ambient light and ambient temperature on ultraviolet light emission has been studied by comprehensive experimental and theoretical investigations, which elucidate that both O vacancy and Sc interstitial serve as deep electron traps for enhanced and prolonged ultraviolet luminescence upon continuous optical or thermal stimulation. Based on the unique spectral features and trap distribution in ScBO 3 :Bi 3+ phosphor, controllable optical information read-out is demonstrated via external light or heat manipulation, highlighting the great potential of ScBO 3 :Bi 3+ phosphor for advanced optical storage application in bright environments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2024
·Vol. 30
·期 3
·1615-1625
·
IF 2.4
Dong Jinxiu,Cui Shichuang,Wang Fei,Wei Wei,Yin Ziluo,Zhang Yuqing,Zhu Quanyao
Electrochromism (EC) is a color control technique for providing visual information, in which vanadium pentoxide (V 2 O 5 ) is a promising material for electrochromic applications due to its excellent ionic intercalation/deintercalation properties and cathodic/anodic color-changing properties. However, its poor cycling stability and color change response rate limit its practical application. Metal–organic frameworks (MOFs) combine the rigidity and flexibility of inorganic–organic materials and can meet the requirements of EC materials such as cycle stability, electrical conductivity, and stress-interference resistance. We report here a strategy to modify V 2 O 5 with Cu-MOF. Cu-doped V 2 O 5 and carbon skeleton (Cu 2 V 2 O 7 @C) composites were prepared for electrochromism. In this scheme, Cu doping can facilitate lithium ion migration by broadening and stabilizing the structure of V 2 O 5 , and the distribution of the carbon skeleton can broaden the contact of the active material with the electrolyte and improve the electron conduction. Combining these merits, it exhibits excellent long-term cycle stability (the capacity retention rate reaches 91.78% after 2000 cycles), the light transmission modulation is greatly improved compared with V 2 O 5 (Δ T = 69%, doubled), and the response time is reduced by 30.43%. This study provides a new perspective for improving the light modulation ability and long-term use stability of vanadium oxide EC materials and promotes the development of MOF materials in the field of electrochromism.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）