FOOD CONTROL
·
2023
·
IF 6
Li Guo,Pengyu Zhao,Zhiqian Yao,Tianhui Li,Mengying Zhu,Zifeng Wang,Lingling Huang,Gulimire Niyazi,Dingxin Liu,Mingzhe Rong
Salmonella enteritidis , a Gram-negative foodborne pathogen , causes inflammation of the stomach and intestines. Poultry and poultry products are considered to be the main hosts of S. enteritidis , especially the most common edible eggs, and increase the risk of Salmonella infection. Therefore, developing the inactivation strategy of S. enteritidis on the surface of eggs is the key step during the egg production process. Gas plasma could effectively inactivate bacteria and fungi and is developed as a potential non-thermal sterilization method in the food industry. In this study, the plasma-activated air (PAA) prepared by the air activated with gliding arc discharge contained a variety of reactive species. When the PAA activated at the power of 50 W and 100 W was inducted into the incubation chamber, the numbers of S. enteritidis on egg fragments or the whole eggs were reduced below the detection limit. After PAA treatment, the eggshells exhibited no change in structure demonstrated by scanning electron microscope, the color of eggshells became a little decrease in red, the internal quality of both the raw egg and the cooked egg also exhibited no change, and trace reactive species remained in the albumen. Further, the PAA was also feasible for the batch treatment of stacked eggs. Therefore, this study supplied an effective and safe strategy for aseptic processing in the poultry industry.
研究领域:
食品科学
·
微生物学
·
等离子体技术
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产品关联
DOI
高影响因子
Frontiers in Bioengineering and Biotechnology
·
2022
·
IF 6.064
Yiding Shen,Kai Fang,Yun Xiang,Keyuan Xu,Liang Yu,Jiaquan Chen,Pingping Ma,Kaiyong Cai,Xinkun Shen,Jinsong Liu
Titanium (Ti) implants have been widely used for the treatment of tooth loss due to their excellent biocompatibility and mechanical properties. However, modifying the biological properties of these implants to increase osteointegration remains a research challenge. Additionally, the continuous release of various metal ions in the oral microenvironment due to fluid corrosion can also lead to implant failure. Therefore, simultaneously improving the bioactivity and corrosion resistance of Ti-based materials is an urgent need. In recent decades, micro-arc oxidation (MAO) has been proposed as a surface modification technology to form a surface protective oxide layer and improve the comprehensive properties of Ti. The present study doped nano silicon nitride (Si 3 N 4 ) particles into the Ti surface by MAO treatment to improve its corrosion resistance and provide excellent osteoinduction by enhancing alkaline phosphatase activity and osteogenic-related gene expression. In addition, due to the presence of silicon, the Si 3 N 4 -doped materials showed excellent angiogenesis properties, including the promotion of cell migration and tubule formation, which play essential roles in early recovery after implantation.
研究领域:
生物材料
·
生物医学工程
·
材料科学
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产品关联
DOI
PubMed
高影响因子
MATERIALS SCIENCE FORUM
·
2019
·
IF 0
Ke Jia Kang,Peng Fan,Jian Zhang,Qiang Guo Luo,Qiang Shen,Lian Meng Zhang
In this study, the W-Si-C multi-phase composites were fabricated by an arc melting method. With addition of SiC, the grain size of W is obviously reduced, and the small angle misorientation becomes dominate, which is beneficial for the improvement of deformability. The effects of SiC additions (from 0.5 to 3wt%) on the microstructure and mechanical properties are mainly investigated. With 1 wt% SiC addition, the flexural strength reaches the highest value. The self-generation of W5Si3 may enhance the strength and ductility, but too much W5Si3 exists as brittle BP (Brittle to Plastic) microstructure. The highest flexural strength is obtained at approximately 1 vol% W5Si3.
研究领域:
材料科学
·
机械工程
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DOI
JOURNAL OF NUCLEAR MATERIALS
·
2022
·
IF 3.555
Yaju Zhou,Shengming Yin,Yong Jiang,Qilai Zhou,Junbo Peng,Youwei Yan
Oxide-dispersion-strengthened reduced-activation ferritic/martensitic (ODS-RAFM) steels have promising applications in future fusion reactors, but the rapid and cost-efficient fabrication of ODS-RAFM steel components still remains a major challenge. In this study, wire and arc additive manufacturing (WAAM) techniques were developed to fabricate a thin-wall ODS-9Cr-RAFM steel part, using flux cored wires containing nano-Y 2 O 3 as the [Y] and [O] sources and Ti as micro-alloying element. Their microstructures and mechanical properties before and after austenite-quenching were both investigated, and the results were compared with other 9Cr-RAFM counterparts without the addition of nano-Y 2 O 3 and Ti. It was suggested that Y 2 O 3 could decompose into [Y] and [O] during the rapid melting, and then precipitate along with Ti as Y 2 TiO 5 mostly (and perhaps also TiO 2 ) during the rapid solidification of WAAM . These oxides have fine nano-sizes with a high number density and can provide multi-fold benefits from refining the grain/sub-grain structures, promoting martensite transformation , to pinning dislocations. After the aus-quenching, a new, more stable nano-phase of Y 2 Ti 2 O 7 was formed, with combined features of ultra-fine size, high number density, and high coherency . The as-quenched ODS-9Cr-RAFM specimens can achieve markedly high strengths with good plasticity, both at room temperature and elevated temperatures up to 650 °C, showing great promises of WAAM techniques for large-scale fabricating high-performance ODS-RAFM steel structural components.
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DOI
高影响因子
JOURNAL OF THERMAL SPRAY TECHNOLOGY
·
2026
·
IF 3.4
Shadmani S.,Khodaei M.,Yang R.,Chen X.,Li H.
This research engineers a high-performance superhydrophobic composite system by synergizing an Al arc-sprayed bond coat with a nanostructured CeO 2 topcoat deposited via solution precursor plasma spraying (SPPS). The objective was to utilize the intrinsic micro-roughness of the arc-sprayed layer to stabilize a Cassie–Baxter wetting state without organic modifiers. Optimization of the SPPS process identified the critical parameters for achieving a hierarchical topography: a standoff distance of 7 cm, a liquid feed rate of 42 rpm, a transverse speed of 500 mm/s, and a total of 4 spray passes. This optimized protocol leveraged the “shadowing effect” of the Al bond coat (Ra ~ 13µm), resulting in a 90% reduction in the required spray passes compared to conventional coatings on smooth substrates. Microstructural analysis confirmed the formation of a phase-pure CeO 2 topcoat with a refined crystallite size of 81 nm. The resulting hierarchical architecture yielded a water contact angle of 151° and a contact angle hysteresis of 2°. Mathematical modeling via the Cassie–Baxter equation quantified a liquid–solid contact area fraction of 0.04, indicating that 96% of the droplet base was supported by trapped air pockets. Electrochemical performance evaluated via potentiodynamic polarization and electrochemical impedance spectroscopy after 96 hours of immersion in 3.5 wt.% NaCl demonstrated superior durability. The Al-CeO 2 composite exhibited a 128% increase in corrosion resistance and a 50.5% reduction in the corrosion rate compared to the bare Al bond coat. While the single-layer benchmark system experienced a 95.5% reduction in coating resistance due to electrolyte infiltration, the optimized Al-composite restricted degradation to 40%. Surface chemistry analysis via x-ray photoelectron spectroscopy revealed that the transition to superhydrophobicity is governed by the spontaneous adsorption of airborne volatile organic compounds, ensuring chemical stability up to 450°C. These results establish a robust, industrially scalable manufacturing route for protective coatings in aggressive marine environments.
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DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2026
·
IF 7.6
Ye Wang,Zhengxuan Hu,Guolong Wu,Qiandi Peng,Qunli Zhang,Jianhua Yao,Wen Han,Chen Wen
To improve the wear resistance of titanium alloy, this study proposes a novel approach that combines laser irradiation and ZrO 2 nanoparticle (NP) doping in the fabrication of wear-resistant micro-arc oxidation (MAO) coating on Ti6Al4V (TC4) alloy. The obtained coatings were characterized by using laser scanning microscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) to analyze their surface morphologies, microstructure and chemical compositions. Tribological properties were evaluated via ball-on-disk sliding wear tests, along with the hardness and adhesion of the coating. The results show that the MAO coating prepared under laser irradiation and ZrO 2 nanoparticle doping (NA- L -MAO) exhibits enhancement in density, uniformity and thickness compared with nanoparticle-doped MAO (NA-MAO) or laser-assisted MAO ( L -MAO) alone. Compared with the MAO coating, the NA- L -MAO coating achieves a porosity of only 4.67%, representing a reduction of ∼41.3%. Meanwhile, its volumetric wear rate reaches 3.56 × 10 −5 mm 3 ·N −1 ·m −1 , which is decreased by ∼88.3% and nearly one order of magnitude lower than that of the MAO coating. The ZrO 2 nanoparticles participate in coating growth via melting or embedding behaviours, enabling filling of micropores and increasing coating thickness. Due to laser irradiation, more ZrO 2 nanoparticles enter the NA- L -MAO coating, and more stable phases (rutile-TiO 2 and t-ZrO 2 ) are formed. Simultaneously, laser irradiation promotes uniform coating growth, lower surface roughness and enhanced coating adhesion. The synergistic effect of laser irradiation and nanoparticle incorporation facilitates more particle penetration into the coating, elevates coating hardness and thus improves the anti-wear performance of the coating.
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Lili Xu,Dong Han,Qing Fu,An Du,Ruina Ma,Yongzhe Fan,Xue Zhao,Xiaoming Cao,Yu Tan,Shigang Jia,Dongli Zhang
To solve the defects of magnesium alloy micro-arc oxidation coatings with large holes and cracks, nanoparticles were introduced into the electrolyte to densify the coatings. In this study, MgO/SnO 2 composite coatings were prepared and the effects of SnO 2 concentration on the microstructure, corrosion resistance and photocatalysis of the composite coatings were investigated. The growth process of the coating was elucidated. The results showed that the addition of SnO 2 significantly improved the breakdown and cut-off voltages of the coatings, with increased up to 16 V. The coatings thickness, hardness and densification increased and then decreased with the addition of nano-SnO 2 concentration. When the concentration of SnO 2 reached 6 g/L, the MgO/SnO 2 composite coating had the most corrosion resistance. The corrosion potential decreased to 5.636 × 10 −9 A cm −2 , which was 3 orders of magnitude lower. The MgO/SnO 2 composite coating surface contained nano-SnO 2 particles to effectively enhanced the photocatalytic performance. The degradation efficiency was optimal up to 21.02 % after 3 h of light exposure.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2025
·
IF 8.9
Ming-Mai Bao,Ying-Chao Liu,Hao-Nan Xu,Jing Zhang,Yin-Long Guo
Differentiating structural isomers in mass spectrometry (MS) poses significant challenges due to the difficulties in generating fragment ions by atmospheric pressure ionization and the spectral similarities encountered in tandem MS/MS analysis. The continuous arc plasma enables in-source dissociation fingerprinting analysis of isomers but presents a risk of solvent ignition during sample introduction because of high temperatures, posing safety concerns. To address these challenges, the Tunable Pulsed Arc Plasma (TPAP) ionization and dissociation device has been developed. The TPAP device converts continuous arc plasma into a pulsed mode, reduces plasma temperatures, enhances discharge stability and safety, and enables adjustable plasma energy for in-source compound dissociation. Programmable control over the pulsed arc plasma voltage allows the scanning of compounds under varying dissociation energies, facilitates the construction of compound-specific energy-resolved spectra. Validation experiments with disubstituted benzene species, chlorogenic acid derivatives, disaccharide and diacylglycerol have demonstrated the capability of TPAP-MS to effectively differentiate isomers through distinct energy-resolved spectra. The TPAP-MS requires minimal instrumental modifications and provides rapid and precise structural annotations directly from the ion source, offering broad potential applications in the analysis of structural isomers.
研究领域:
分析化学
·
质谱分析
·
等离子体电离
·
结构解析
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2016
·Vol. 31
·期 4
·468-479
·
IF 1.579
Zhijun Wei,Lingjie Zhang,Hui Yang,Tao Shen,Lawson Chen
Two kinds of Ag/ZnO electrical contact materials were fabricated by powder metallurgy method. The electrical life testing was done to investigate the arc erosion behavior of the prepared contact materials. Their properties and morphologies were characterized and discussed in detail. Results showed that Ag/ZnO(c) with coprecipitated ZnO as the second phase had better mechanical and electrical properties compared with Ag/ZnO(a) with ZnO purchased from Aladdin Industrial, Inc. Besides, some typical morphologies, such as holes, Ag or ZnO enrichment zone, Ag skeletons and bubbling area, occurred on the surface of the contacts. Especially for Ag/ZnO(c), vertically aligned ZnO nanorod arrays were detected after the life testing without any other supporting equipment. The existence of a solid solution Zn1−x
Ag
x
O and different energy generated during arcing process were possible reasons resulting in this phenomenon. A solid–vapor–solid mechanism was put forward to analyze the phenomenon mentioned above. These evidences could also offer some valuable information desired for reducing the splashing of Ag droplet under arcing.
研究领域:
材料科学
·
电气工程
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产品关联
DOI
高影响因子
Journal of Magnesium and Alloys
·
2021
·
IF 10.088
Shiquan Jiang,Zhiyuan Zhang,Dong Wang,Yuqing Wen,Ning Peng,Wei Shang
Mg alloys are considered the most promising engineering materials because of their unique properties. However, the uncontrolled corrosion rate of these alloys limits their applications. Therefore, in this study, a micro-arc oxidation layer was used as a transition layer to “directly” grow a zinc-based metal-organic framework (MOF) composite coating on the surface of a Mg alloy (AZ91D). Herein, the two zeolitic imidazolate framework (ZIF-8) coatings with different morphologies were separately prepared by homologous metal oxide induction and a one-step in-situ growth method. The superhydrophobic composite coating showed strong hydrophobicity and self-cleaning properties, which could prevent the penetration of water and corrosive ions (Cl − ) into the surface of AZ91D. Electrochemical tests demonstrated that the super-hydrophobic composite coatings greatly enhanced the corrosion resistance of AZ91D, and the corrosion current density decreased from 10 −5 to 10 −9 A/cm 2 . These results indicate that the ZIF-8 coatings are beneficial for improving the hydrophobicity and enhancing the corrosion resistance of Mg alloys. Therefore, MOF composite coatings provide a new strategy that can be used to prepare multifunctional anticorrosion coatings on metal substrates.
研究领域:
材料科学
·
腐蚀与防护
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产品关联
DOI
高影响因子
MOLECULAR NEUROBIOLOGY
·
2024
·
IF 4.6
Shen Yifen,Zhang Le,Yang Tao,Li Xiaosong,Liu Chao,Li Hongmei,Hu Yanping,Shen Hao,Li Hua,Orlov Yuriy L.,Zhou Shasha,Shen Yihang
Puberty onset through hypothalamic-pituitary-gonad (HPG) axis as an important reproductive event in postnatal development is initiated from hypothalamic arcuate nucleus (ARC). The growing evidence indicates that translational control also plays an essential role in the final expression of gonadotropin genes. To investigate the role of protein translation and behavior of ribosomes in pubertal onset, the global profiles of transcriptome, single ribosome (monosome), polysome, and tandem mass tag proteome were comprehensively investigated in rat hypothalamic ARCs of different pubertal stages using RNA sequencing, polyribo sequencing, and mass spectrum. Transcriptome-wide enrichments of N6-methyladenosine and IGF2BP2 were investigated using meRIP and RIP sequencing. Monosome was robustly enriched on a large proportion of mRNA in early puberty rats (postnatal day (PND)-25) compared to late puberty (PND-35 and PND-45). Monosome-enriched mRNAs, including HPG axis-related genes, had a large number of upstream ORFs (uORF, < 100 nt) and displayed translational repression in early puberty. Furthermore, insulin-like growth factor 2 mRNA binding protein 2 (IGF2BP2) could particularly interact with and facilitate monosome to bind with mRNA in early puberty. Finally, ectopic over-expression of IGF2BP2 in hypothalamic ARC via lateral ventricle injection in vivo could recruit monosome to aggregate on mRNA and delay puberty onset. We uncovered a novel regulatory mechanism of IGF2BP2 and monosome for translational control in puberty onset, which shed light on the neuroendocrine regulatory network involved in HPG axis activation.
研究领域:
神经内分泌学
·
生殖生物学
·
翻译调控
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2019
·
IF 6.395
Duchao Zhang,Hongbin Ling,Tianzu Yang,Weifeng Liu,Lin Chen
Electric arc furnace (EAF) dust is a hazardous waste material containing valuable elements, such as zinc (Zn) and iron (Fe), as well as other environmentally harmful elements. In the conventional process, the existence of zinc ferrite (ZnFe 2 O 4 ) in EAF dust results in a low recovery ratio of zinc and can induce high energy consumption or difficulties utilizing iron resources. In this article, a hydrothermal reduction method in a NaOH system is proposed to recover Zn selectively from EAF dust. First, when pure ZnFe 2 O 4 was used as the input material to test the feasibility of the new method, 70% Zn leaching efficiencies and the isolation of Fe in the residue through the formation of ferroferric oxide (Fe 3 O 4 ) were achieved at the optimal conditions of 260 °C, 6 M [NaOH], 10 g/L [C 6 H 12 O 6 ] n and 50 mL/g of L/S. Second, a leaching process of EAF dust was proposed using the following two procedures: (i) first leaching under normal pressure to dissolve zinc oxide (ZnO); and (ii) second leaching of the first leach residue under hydrothermal reduction conditions to dissolve ZnFe 2 O 4 . The leach liquor from the second step was recycled to the first step. Under optimum conditions, the leaching efficiencies of Zn during the first and second leaching were 66.4% and 69.3%, respectively. The total Zn leaching efficiency was calculated to be 89.7%, producing Zn-impregnated leach solution and a leach residue rich in Fe (up to 39.4 wt%) that are suitable as resources for a steel-making plant. However, this process also has its shortcomings owning to larger liquid-solid ratio in the leaching process. Overall, the study technically provides an alternative approach to improve the recycling of zinc and iron and effectively reduce environmental risks from EAF dust.
研究领域:
环境工程
·
冶金工程
·
资源循环利用
·
清洁生产技术
·
工业废物处理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）