npj Science of Food
·
2026
·
IF 9.7
Pan Yani,Xiang Lin,Yang Li,Wang Xinxin,Feng Xinyu,Lu Jian,Wang Dong,Zhang Jingjing,Chen Ming,Yan Anran,Guo Haowei,Zhao Ranran,Zhang Huiyuan,Yuan Jiancheng,Ren Guohua,Chu Qiang,Chen Ping
The ability of flowers to sustain fragrance release during the scenting process dominates the aroma quality of scented tea, rather than the capacity of tea dhool to passively adsorb volatiles. Plucked flowers remain metabolically active, whose physiological status governs the persistence and intensity of fragrance emission. Traditional practice has focused on maximizing aroma uptake by a low‑moisture tea dhool, inadvertently accelerating floral dehydration and metabolic collapse, thereby prematurely terminating peak fragrance release. This study introduces a novel “tea nurturing flowers” perspective, investigating how tea dhool moisture content modulates Osmanthus physiology and shapes the aroma quality of Osmanthus black tea (OBT). An optimized moisture level (25%) preserved cellular integrity, delayed water loss, and maintained stomatal opening, collectively sustaining floral volatile emission. By contrast, insufficient moisture (5–10%) caused plasmolysis and stomatal closure, while over‑hydration (45%) induced cell rupture and blockage of the porous tea dhool, impairing volatile transfer. Consequently, OBT produced at 25% moisture exhibited a more intense and persistent floral aroma, with elevated levels of key volatiles such as β‑ionone. Overall, this study repositions tea dhool from a merely passive adsorbent to a moisture‑mediated regulator of flower vitality, providing a mechanistic foundation and practical guidelines for improving scented tea quality.
✓ 已验证
DOI
PubMed
高影响因子
POLYMER BULLETIN
·
2026
·Vol. 83
·期 7
·349
·
IF 4.2
Li Junqiang,Tan Mengqi,Li Zhilin,Wang Xi,Yi Chunwang,Yu Ningya,Sheng Liping
Poly(amidoamine) hydrogel particles has been proved to be very suitable for the effective adsorption of heavy metal ions. In this paper, cation-exchange groups were introduced into the poly(amidoamine) hydrogel particles to demonstrate the synergistic effect of adsorption and ion exchange for the removal of heavy metal ions from water. A-M hydrogel particles were synthesized from N , N’ -methylene bisacrylamide (MBA) and 2-[(2-aminoethyl) amino] ethane sulfonic acid sodium salt (AAS salt) via inverse suspension condensation polymerization, and these hydrogel particles were applied to the adsorption of heavy metal ions such as Cu(II), Co(II), and Ni(II) from aqueous solution. The adsorption mechanism was explored, and the results confirmed that ion exchange occurred between the sodium sulfonate groups and the heavy metal ions during the adsorption process. The influences of initial monomer molar ratio, pH value, and temperature on the adsorptive behavior of the hydrogel particles were addressed. The maximum adsorption capacities were 149.9 mg/g for Cu(II), 94.5 mg/g for Co(II), and 114.7 mg/g for Ni(II), and the adsorption selectivity of the hydrogel particles in the mixed metal solution followed the order of Cu(II) > Ni(II) > Co(II). The adsorption process was more consistent with the Langmuir model and the pseudo second-order model.
✓ 已验证
DOI
高影响因子
Journal of Central South University
·
2026
·Vol. 33
·期 2
·582-598
·
IF 4.7
Zhang Hao,Qiao Meng-ying,Yue Xiu-jie,Wang Xue-zhao,Wang You-qiang,Duan Ji-zhou,Zhang Ping
High-entropy alloy (HEA) coatings can effectively improve the wear properties of light alloys. CeO 2 and Y 2 O 3 are two common rare-earth oxides that are often used as dopants to modify the structure and properties of the HEA coatings. In this paper, the HEA coatings of undoped (H 0 ), doped with CeO 2 (H 1 ), Y 2 O 3 (H 2 ), and CeO 2 +Y 2 O 3 (H 3 ) were prepared by extremely high-speed laser cladding (EHLC). The effects of rare-earth biphasic particles and their synergistic effects on the microstructure and wear properties of the coatings were investigated. The results show that single CeO 2 /Y 2 O 3 doping can effectively improve the body-centered cubic (BCC) phase content and refine the grain structure of the coating, but when CeO 2 and Y 2 O 3 are co-doped, the BCC phase content of the coating can be improved more significantly, and the grain refinement is more obvious. Furthermore, the synergistic action of CeO 2 and Y 2 O 3 in the H 3 coating resulted in a significant enhancement of the effects of solid solution strengthening, lattice distortion, and fine-grain strengthening within the microstructure. This resulted in a substantial increase in the microhardness of the H 3 coating, reaching 970.36HV, with a wear rate of merely 1.87×10 −5 mm 3 /(N·mm). In comparison with the H 0 , H 1 , and H 2 coatings, the hardness increased by 1.54 times, 1.51 times, and 1.26 times, respectively. Concurrently, the wear rates decreased by 15.77%, 12.83%, and 11.23%, respectively. The primary wear mechanisms observed in the coatings include abrasive wear, adhesive wear, and oxidative wear.
✓ 已验证
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2026
·
IF 4.7
Ren Yue,Miao Yuhang,Ren Qinghui,Wang Shen,Zhang Liyi,Li Ling,Pan Dengke,Zhou Hua,Shao Mingfei
Biomass conversion to building blocks powered by renewable electricity offers a promising route toward low-carbon plastics, as exemplified by the electrooxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA). However, this field is limited by a scalable electrocatalyst that can be operated at a large current. Here, we report a facile and scalable Cu-Co bimetal oxide (Cu-CoO x ) electrocatalyst for efficient HMF oxidation. Comprehensive studies reveal that Cu promotes hydroxyl adsorption to form Co(OH) 2 and converts to CoO x (OH) y via electrooxidation. The Cu-CoO x catalyst was evaluated in a continuous-flow reactor with 200 cm 2 of electrode area, achieving high Faradaic efficiency (92.49%) and selectivity (ca. 89%) toward FDCA at large operation currents (40–200 A). Moreover, this reactor was operated at 100 A for more than 100 h, reaching high single-pass conversion efficiency (96.5%) and FDCA selectivity (95.5%). This work provides a foundation for the development of stable and large-area electrodes to enable scalable FDCA electrosynthesis.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Xue Wen,Yin Ruomei,Li Yuntao,Zhu Zhicheng,Zhang Bencong,Tang Ziyang,Gao Junjie,Yan Zaoxue,Wu Xiaodong,Wei Wei,Lu Jialu
Alkaline water electrolysis is a promising technology for generating green hydrogen from renewable electricity. However, this process is hindered by high energy barriers associated with intermediate desorption, which limits overall efficiency. Herein, we report the rational synthesis of defect-rich Au 3 Cu@Rh aerogels as high-performance electrocatalysts for the hydrogen evolution reaction (HER) under alkaline conditions. Comprehensive material characterization combined with density functional theory (DFT) calculations reveal the pivotal role of defect-rich structure in boosting catalytic activity. Owing to the abundant crystallographic defects at the atomic-level and a well-defined core–shell heterointerface, the optimized Au 3 Cu@Rh 3 aerogel exhibits exceptional HER performance, requiring an overpotential of merely 51.5 mV to deliver a current density of 10 mA cm −2 . This work provides a novel synthesis strategy and demonstrates its broad potential for the tailored fabrication of multicomponent core–shell aerogels with superior electrocatalytic properties. Graphical abstract
✓ 已验证
DOI
高影响因子
Journal of Thermal Science
·
2026
·
IF 3.2
Cheng Xianzhi,Wu Lingnan,Jin Kairu,Yu Xupeng,Lei Jieming,Zhu Quan,Abudoureheman Maierhaba,Wei Bo,Tian Zhenyu
Pyridine is an important and typical model compound for studying fuel-nitrogen conversion mechanisms during the combustion process. Blending a part of ammonia during the coal combustion process could effectively reduce CO 2 emissions. The co-oxidation kinetics of pyridine and ammonia were investigated in an atmospheric pressure jet-stirred reactor at temperatures between 770 and 1100 K with the equivalence ratios of 0.05 and 2. Pyridine, ammonia, and several major oxidation products were quantitatively measured by two gas chromatographs and a Fourier transform infrared spectrometer. The pyridine LTO 3.0 kinetic model was used to predict the pyridine-ammonia conversion characteristics. The current model could provide relatively good predictions of pyridine conversion under most conditions, including pyridine-ammonia co-oxidation under fuel-rich conditions, but the predictions for NH 3 under fuel-rich conditions and pyridine under fuel-lean conditions still require improvement. Blended ammonia promotes pyridine consumption under fuel-lean conditions and inhibits pyridine consumption under fuel-rich conditions. The results of this work could help better understand the coal-ammonia interaction during the co-firing process of coal and ammonia.
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 5
·296
·
IF 5.4
Chen Jiaming,Zhang Yue,Zhang Linfeng,Zhang Siqi,Song Wei
An efficient galvanic replacement synthesis strategy for the preparation of a bimetallic Ni 2 Pd 1 aerogel with remarkable peroxidase-mimicking activity is presented. By employing a non-precious Ni aerogel as a structural template, the precious Pd component is successfully incorporated and alloyed within its three-dimensional (3D) porous network through rational interfacial design. The combination of the intrinsic through-pore structure of metal aerogels with optimized bimetallic composition results in significantly enhanced peroxidase-like performance. Investigations involving radical quenching/trapping experiments and electrochemical tests confirm that the catalytic mechanism proceeds via an electron transfer pathway. Furthermore, based on the specific inhibitory effect of L-cysteine on the catalytic behavior of optimized Ni 2 Pd 1 alloy aerogel, a highly selective colorimetric sensing platform is developed, achieving a detection limit of 1.43 µM and robust anti-interference capability against various common amino acids. This study provides new design concepts and technical pathways for developing high-performance biomimetic sensing materials.
Section
Graphical abstract
✓ 已验证
DOI
PubMed
高影响因子
Advances in Manufacturing
·
2026
·
IF 3.9
Wang Yi-Fei,Han Xiao-Xiao,Zhu Xiao-Long,Zhu Wei,Chen Feng
Part sedimentation in volumetric additive manufacturing (VAM) technology is a well-known detrimental effect that can significantly deteriorate printing resolution and shape fidelity. This study reveals the underlying mechanism by which process parameters and material properties affect the sedimentation properties of parts fabricated by VAM, considering the intrinsic thermal process and its interaction with polymerization kinetics. It was found that thermally induced changes in material viscosity and polymerization parameters played an essential role in regulating sedimentation behavior. Lowering the ambient and initial printing temperatures can increase viscosity resistance and thus weaken the sedimentation phenomenon, whereas a longer printing time adversely influences part sinking. Optimal thermal conditions that simultaneously ensure low sedimentation and a relatively short printing time should be determined during printing, particularly for thermally thinned materials. Importantly, using the wall-end effect, the model revealed that settlement could be effectively mitigated by solidifying the part near the bottom of the container. The experiments confirmed a reduction of approximately 39.4% in sedimentation displacement. The thermal-solid-fluid coupled model developed in this study offers a valuable tool to guide the design of new photosensitive materials as well as the optimization of process parameters, which is essential to improve the printing outcomes of VAM and thus facilitate its broader applications.
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2026
·
IF 4.9
Li Ruifang,Sun Yan,Feng Mingzhi,Kelsang Drolma,Cai Hanhui,Zhang Jun
Ulcerative colitis (UC) is a chronic disease characterized by intestinal inflammation, mucosal damage, and immune dysregulation. Current treatments are often inadequate, driving the search for alternatives with fewer side effects. Isoliquiritigenin (ISL), a flavonoid from licorice, has demonstrated anti-inflammatory effects, but its efficacy in UC remains uncertain. Male C57BL/6 mice were divided into six groups: Control, DSS model, low-, medium-, and high-dose ISL (25, 50, 100 mg/kg), and 5-aminosalicylic acid (5-ASA, 100 mg/kg). UC was induced by administering 3% DSS, followed by ISL or 5-ASA treatment. Disease activity index (DAI), histopathology, real-time PCR, Western blotting, immunohistochemistry, and 16 S rRNA sequencing were used to assess inflammation, intestinal barrier integrity, and gut microbiota (GM) composition. a Caco-2 cell-based model of UC was developed. After transfection to induce the overexpression of TLR4 and its adaptor protein MyD88, the cells were incubated with ISL. The effects of this intervention were evaluated by measuring the expression of inflammatory cytokines, tight junction-associated proteins, and components of the TLR4/MyD88 signaling pathway. ISL significantly alleviated DSS-induced UC symptoms, such as weight loss and colonic shortening. ISL reduced colonic mucosal damage and inflammatory cell infiltration, downregulated TLR4, MyD88, and phosphorylated NF-κB expression, and lowered TNF-α, IL-1β, and IL-6 levels. It also improved intestinal barrier function by upregulating ZO-1, Claudin-1, and Occludin expression. ISL modulated GM by increasing beneficial bacteria (Muribaculaceae) and reducing pathogenic bacteria (Escherichia-Shigella). Overexpression of TLR4 and MyD88 in the Caco-2 cell line abrogated the protective effects of ISL, as evidenced by increased expression of inflammatory cytokines and downregulated expression of tight junction proteins. Overall, these findings suggest ISL may protects against DSS-induced UC by suppressing the TLR4/MyD88/NF-κB pathway, enhancing intestinal barrier function, and modulating GM, supporting its potential as a therapeutic supplement for UC.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 10
·691
·
IF 3.2
Danli Yao,Cheng Rong
Radar absorbing materials (RAMs) for electromagnetic wave attenuation and EMI mitigation are increasingly required to exhibit broadband microwave absorption and low density. However, pure graphite suffers from poor impedance matching, lack of magnetic loss (resulting in weak low-frequency absorption), and excessive thickness requirements, while pure Fe 3 O 4 has limited broadband absorption capability. To address these issues, Fe 3 O 4 /graphite composites with mass ratios ranging from 5:0 to 5:8 were prepared via an in-situ solvothermal method, integrating magnetic loss from Fe 3 O 4 and dielectric loss from graphite to achieve synergistic microwave absorption. XRD, SEM–EDS, VSM, and vector network analyzer measurements were carried out. Results showed that Fe 3 O 4 formed a pure cubic spinel phase, with nanoparticles uniformly dispersed on graphite sheets, creating layered mixed interfaces. As the graphite content increased, saturation magnetization decreased steadily, consistent with the magnetic phase dilution model. The microwave absorption originated from the synergistic effect of Fe 3 O 4 ’s natural resonance (magnetic loss) and graphite’s dielectric loss (via multiple scattering and interface polarization). Among the samples, the 5:4 ratio composite exhibited a minimum reflection loss of –62.48 dB at 4.88 GHz with a thickness of 4.5 mm, attributed to near-optimal impedance matching and a high attenuation constant. The 5:2 ratio composite achieved the widest effective absorption bandwidth of 4.48 GHz (13.28–17.76 GHz) at 1.5 mm thickness. These Fe 3 O 4 /graphite composites demonstrate promising microwave absorption performance with low density, making them strong candidates for lightweight radar-absorbing structures, where broadband effectiveness and mass efficiency are critical design considerations.
✓ 已验证
DOI
高影响因子
Cell Communication and Signaling
·
2026
·Vol. 24
·期 1
·191
·
IF 11.6
Zhao Zhao,Wei Xue-Feng,Zhao Liang,Xia Jun-Yao,Li Yu-Ya,Jia Yi-Jun,Zhu Bin
Background As the earliest vertebrates with innate and adaptive immunity, teleosts offer insights into the mammalian immune system. The intestine is the largest mucosal surface in the vertebrates and is a key immunological barrier contact with the external environment such as food, pathogens, and vaccine antigens. However, intestinal early immune responses post-vaccination remains unclear. This study aimed to explore intestinal vaccine uptake and early immune response mechanisms triggered by immunization. Methods In this study, we utilized zebrafish as a model for immersion immunization. We employed zebrafish as a model for immersion immunization. We immunized zebrafish by soaking them in a vaccine for 6 h, then transferred them to normal water for continued cultivation. We observed the uptake and absorption of the vaccine by the intestines after immunization through in vivo imaging and immunofluorescence. Additionally, transcriptomic analysis was conducted to identify the key signaling pathways and gene expression changes associated with the intestinal immune response. Results With the increase in immunization time, a significantly enhanced fluorescent signal can be observed in the intestine. The expression level of IgZ in the intestine was nearly 4 times that of the control group at 3 days post-vaccination (dpv), and the survival rate after challenge could reach 27.91%, which was significantly higher than that of the control group. Transcriptomic analysis revealed substantial upregulation of pathways involved in the p53 signaling pathway, antigen presentation, and T cell immune regulation post-vaccination. There is a marked reduction in the proportions of CD4 + and CD8α + T lymphocytes within the intestine of p53 mutant zebrafish. Conclusion Our research disclosed that p53 is involved in the early immune response by regulating antigen presentation and induces T-cell immune responses. This investigation provides novel insights and establishes a foundational understanding of early intestinal immune responses.
✓ 已验证
DOI
高影响因子
IONICS
·
2026
·
IF 3.4
Zhao Jinsong,Wu Xiangyong,Song Ying,Su Hao,Song Weixing
Viologen has become a prominent focus of research in electrochromism due to its facile molecular structure modification, diverse color transitions, low driving voltage, and high coloration efficiency. In this study, asymmetric viologen derivatives (Pentyl-V and Heptyl-V) were synthesized through N-alkylation reactions using 1,2-bis(4-pyridyl) ethylene as the pyridine backbone. Subsequently, these derivatives were used to fabricate electrochromic gels, which were integrated with ITO-coated conductive glass to assemble electrochromic devices. Finally, the spectroelectrochemical, and electrochromic properties of the devices were comprehensively studied. Among these two electrochromic devices based on asymmetric viologen derivatives, the viologen derivative Heptyl-V, which has a longer alkyl chain substituent, demonstrates a significant optical contrast (30.3%) at 521 nm, a fast response time (coloring/ bleaching time of 21.1 s and 4.9 s), and a satisfactory coloring efficiency (180.4 cm²/C). The gel electrochromic device, based on asymmetric viologen derivatives, offers advantages such as a simple preparation process, low energy consumption, and high coloring efficiency. It holds potential for application in fields such as smart windows, electrochromic displays, and wearable electronics.
✓ 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）