发布求助
文献互助 智能选刊 最新文献

Materials Letters最新文献

筛选
英文 中文
A novel electron beam additive manufacturing method: diffusion-based pre-melted electron beam freeform fabrication 一种新型电子束增材制造方法：基于扩散的预熔电子束自由成形技术
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138885
Xi Shu , Guoqing Chen , Chunyu Wang , Chunju Wang , Lining Sun
{"title":"A novel electron beam additive manufacturing method: diffusion-based pre-melted electron beam freeform fabrication","authors":"Xi Shu ,&nbsp;Guoqing Chen ,&nbsp;Chunyu Wang ,&nbsp;Chunju Wang ,&nbsp;Lining Sun","doi":"10.1016/j.matlet.2025.138885","DOIUrl":"10.1016/j.matlet.2025.138885","url":null,"abstract":"<div><div>Additive manufacturing still faces several significant challenges, including coarse grain structure, uneven element distribution, and difficulties in process control. This study introduces the pre-melted electron beam freeform fabrication method as a targeted solution to these issues. A tungsten diversion nozzle is employed to mitigate excessive thermal input and intense melt pool stirring. This nozzle reduces direct electron beam impact on the base metal, promoting grain refinement within the fabricated part and enhancing its mechanical properties. The molten metal merely wets and spreads on the surface of the base metal, avoiding deeper base metal melting. When the 10-layer deposit achieves optimal interlayer fusion, it exhibits a tensile strength of up to 1083 MPa, comparable to that of forged TC4 titanium alloy.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138885"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel strategy for controlled chloride absorption in cementitious materials with LDHs-based composites 用ldhs基复合材料控制胶凝材料中氯化物吸收的新策略
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138888
Lei Yang , Shaonan Cai , Pinghua Zhu , Lingchao Lu , Hui Liu , Jun Xu , Xinjie Wang , Mingxu Chen
{"title":"A novel strategy for controlled chloride absorption in cementitious materials with LDHs-based composites","authors":"Lei Yang ,&nbsp;Shaonan Cai ,&nbsp;Pinghua Zhu ,&nbsp;Lingchao Lu ,&nbsp;Hui Liu ,&nbsp;Jun Xu ,&nbsp;Xinjie Wang ,&nbsp;Mingxu Chen","doi":"10.1016/j.matlet.2025.138888","DOIUrl":"10.1016/j.matlet.2025.138888","url":null,"abstract":"<div><div>Despite proven improvements in chloride-ion (Cl<sup>−</sup>) adsorption capacity and corrosion inhibition in cementitious materials through layered double hydroxides (LDHs)-based composites, the long-term performance remains unclear. This study investigated the time-dependent Cl<sup>−</sup> adsorption behavior of multiple LDHs-based composites in sulphate-resistant Portland cement (SRPC) mortar with different protective layer thickness (T-50 and T-35), aiming to evaluate the influencing factors of the adsorption kinetics. The results showed that Cl<sup>−</sup> adsorption in all specimens increased with soaking time but remained below the theoretical maximum even after 120-day soaking. Among the tested adsorbents, mortars with LDHs-strongly basic anion exchange resin (LDHs-SBAER, 1.424 mg/g after 120-day, T-35) and layered double oxide (LDO, 1.449 mg/g after 120-day, T-35) showed superior Cl<sup>−</sup> adsorption and potential for long-term performance. Besides，the Cl<sup>−</sup> adsorption kinetics conformed to the ExpAssoc kinetic model (R<sup>2</sup> ≥ 0.99), demonstrating a distinct biphasic behavior: an initial rapid adsorption phase followed by a slower equilibrium stage. Interestingly, the time-dependent Cl<sup>−</sup> adsorption revealed strong dependence on the two key parameters of adsorbent types and protective layer thickness.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138888"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biomimetic structures in orthodontic brackets: a strategy for enhanced antibacterial performance and corrosion resistance 正畸托槽中的仿生结构：一种增强抗菌性能和耐腐蚀性的策略
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138896
Yikang Feng , Aiyi Chen , Jionghong Liang , Xiaolong Tang , Junfeng Gou , Jiangwen Liu , Guie Xie
{"title":"Biomimetic structures in orthodontic brackets: a strategy for enhanced antibacterial performance and corrosion resistance","authors":"Yikang Feng ,&nbsp;Aiyi Chen ,&nbsp;Jionghong Liang ,&nbsp;Xiaolong Tang ,&nbsp;Junfeng Gou ,&nbsp;Jiangwen Liu ,&nbsp;Guie Xie","doi":"10.1016/j.matlet.2025.138896","DOIUrl":"10.1016/j.matlet.2025.138896","url":null,"abstract":"<div><div>This study fabricated three biomimetic structures (cicada wing, shark skin, and moth eye) on TA1 titanium with wire electrical discharge machining (WEDM) and coated them with ZrN. ZrN coating increased static contact angles, which reduced microbial adhesion. The moth-eye structure showed the highest contact angle (136.94 ° ± 1.1 °), achieving 99.0 % antibacterial rate, which outperformed unstructured pure titanium with ZrN (39.52 %). The TA1-Moth-Eye-ZrN structure improved antibacterial performance and corrosion resistance, demonstrating good biocompatibility and potential applications in orthodontic treatment.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138896"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A uni-micelle approach for controlled synthesis of monodisperse Au-Ag alloy nanoparticles 一种控制合成单分散金-银合金纳米颗粒的单胶束方法
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138891
Wenchao Wang , Liangang Shan , Lei Qian, Jianguo Tang, Jixian Liu
{"title":"A uni-micelle approach for controlled synthesis of monodisperse Au-Ag alloy nanoparticles","authors":"Wenchao Wang ,&nbsp;Liangang Shan ,&nbsp;Lei Qian,&nbsp;Jianguo Tang,&nbsp;Jixian Liu","doi":"10.1016/j.matlet.2025.138891","DOIUrl":"10.1016/j.matlet.2025.138891","url":null,"abstract":"<div><div>Gold silver alloy nanoparticles (Au-Ag NPs) of small size hold immense potential in a variety of fields, including catalysis, sensing, photothermal therapy, and medicine, thanks to their synergistic effects. However, the existing synthesis methods for these nanoparticles are plagued by issues such as uneven product sizes, low yields, and high costs. In this study, we developed a uni-micelle method for controlled synthesis of monodisperse Au-Ag alloy nanoparticles. Within an oil-in-water system, the dual-soluble metal precursors can diffuse into the micelles that contain only the reductant, thereby facilitating nucleation and growth. The resulting Au-Ag alloy nanoparticles have an average size of approximately 6 nm, with a standard deviation of less than 10 %, which indicates a high degree of mono-dispersity. Moreover, Au-Ag NPs can be obtained through a single separation process, with yields reaching 58 %, respectively.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138891"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rapid titanium carbide synthesis from titanium and graphite powders via ultrafast high-temperature sintering 以钛粉和石墨粉为原料，采用超快高温烧结技术快速合成碳化钛
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138890
Daiki Akutagawa , Toshiki Sato , Tomoharu Tokunaga , Kiyoshi Kobayashi , Takahisa Yamamoto
{"title":"Rapid titanium carbide synthesis from titanium and graphite powders via ultrafast high-temperature sintering","authors":"Daiki Akutagawa ,&nbsp;Toshiki Sato ,&nbsp;Tomoharu Tokunaga ,&nbsp;Kiyoshi Kobayashi ,&nbsp;Takahisa Yamamoto","doi":"10.1016/j.matlet.2025.138890","DOIUrl":"10.1016/j.matlet.2025.138890","url":null,"abstract":"<div><div>Self-propagating high-temperature synthesis (SHS) is a combustion-based method that involves a self-heating chain reaction, which is effective for rapidly producing materials with high melting points. Herein, ultrafast high-temperature sintering (UHS) was leveraged to ignite the SHS of titanium carbide (TiC) from titanium and graphite powders, and the heat generation and microstructural evolution during the process were investigated. The exothermic heat generated during TiC synthesis was confirmed, demonstrating that SHS was initiated in the initial stage of UHS. The incubation time before SHS ignition decreased with an increase in the UHS temperature above the melting point of titanium. Scanning electron microscopy revealed that fine TiC grains formed during SHS, which became denser under continued UHS. Additionally, molten Ti spread over the graphite particles during SHS, which transformed into plate-like TiC grains with elongated voids between them under subsequent heating by UHS. This structural feature was found to hinder further densification.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138890"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spin-coated magnesium-doped copper oxide thin films for solar cell application 自旋包覆掺镁氧化铜薄膜在太阳能电池中的应用
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138884
Haruto Shimada, Takeo Oku
{"title":"Spin-coated magnesium-doped copper oxide thin films for solar cell application","authors":"Haruto Shimada,&nbsp;Takeo Oku","doi":"10.1016/j.matlet.2025.138884","DOIUrl":"10.1016/j.matlet.2025.138884","url":null,"abstract":"<div><div>Copper oxide (CuO) and magnesium (Mg)-doped CuO thin films were fabricated by spin coating, and then their properties were characterized. In the Mg-doped CuO thin films, a minor phase of MgCu<sub>2</sub>O<sub>3</sub> was observed in addition to CuO. Optical absorption analysis revealed that Mg doping narrows the energy gap of CuO. Devices containing Mg-doped CuO thin films exhibited photovoltaic characteristics under illumination. These devices demonstrated the effectiveness of spin coating as a simple and inexpensive method for fabricating photoconversion layers. This study advances the development of CuO-based solar cells fabricated using spin coating.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138884"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of the Al-N co-doping on the structure and properties of ZnO nanocrystals Al-N共掺杂对ZnO纳米晶结构和性能的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138887
Yingying Zhang , Zhiyuan Leng , Ang Qiao , Muzhi Cai , Haizheng Tao
{"title":"Impact of the Al-N co-doping on the structure and properties of ZnO nanocrystals","authors":"Yingying Zhang ,&nbsp;Zhiyuan Leng ,&nbsp;Ang Qiao ,&nbsp;Muzhi Cai ,&nbsp;Haizheng Tao","doi":"10.1016/j.matlet.2025.138887","DOIUrl":"10.1016/j.matlet.2025.138887","url":null,"abstract":"<div><div>Compared to single-element-doped ZnO, Al-N co-doping provides substantial enhancements in the photoelectric properties and chemical stability. In this study, the Al-N co-doped ZnO nanocrystals were successfully synthesized via precipitation and subsequent atmospheric heat-treatment methods, and the effect of co-doping on the structure and optical properties of ZnO nanocrystals was also investigated. We found that the presence of Al in ZnO enhances the solid solubility of N, leading to the successful co-incorporation of Al and N into the ZnO lattice. The Al-N co-doping resulted in a decrease in the band gap of ZnO nanocrystals. However, structural characterizations revealed that the direct bonding between Al and N hinder the further improvement of optical properties. This study provides valuable insights for optimizing the structure of doped ZnO and tailoring their functional properties.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138887"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Achieving giant corrosion resistance of Ti65 alloy with high-resistivity coating by micro-arc oxidation 采用微弧氧化法制备高电阻率涂层，实现Ti65合金的巨耐蚀性
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138889
Yu Ma , Jianying Zhang , Xingyu He , Hongliang Zhang , Renwei Cao , Yurii Luhovskyi , Mingwei Zhu
{"title":"Achieving giant corrosion resistance of Ti65 alloy with high-resistivity coating by micro-arc oxidation","authors":"Yu Ma ,&nbsp;Jianying Zhang ,&nbsp;Xingyu He ,&nbsp;Hongliang Zhang ,&nbsp;Renwei Cao ,&nbsp;Yurii Luhovskyi ,&nbsp;Mingwei Zhu","doi":"10.1016/j.matlet.2025.138889","DOIUrl":"10.1016/j.matlet.2025.138889","url":null,"abstract":"<div><div>In this study, a ceramic coating with a thickness of ∼4 μ m was prepared on Ti65 alloy by micro-arc oxidation technology. The <em>E</em><sub>corr</sub> of the MAO coating is markedly more positive (−0.1167 V) than that of the Ti65 substrate (−0.5156 V), and the <em>I</em><sub>corr</sub> of the MAO coating is merely 6.01 × 10<sup>-10</sup> A·cm<sup>−2</sup>, which is two orders of magnitude lower than that of the Ti65 substrate. The outstanding corrosion resistance of the MAO coating is primarily attributed to the high resistivity of its inner dense layer (4 times that of the outer loose layer), which effectively inhibits Cl<sup>-</sup> penetration and thereby protects the substrate from corrosion.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138889"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Eutectic electrolyte boosting the stability of high-voltage Zn//VOPO4 battery 共晶电解液提高高压Zn//VOPO4电池稳定性
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138886
Huanjing Zhang , Xinyu Wang , Zhanpeng Sun , Xueya Li , Xianyu Liu , Zhigang Fan
{"title":"Eutectic electrolyte boosting the stability of high-voltage Zn//VOPO4 battery","authors":"Huanjing Zhang ,&nbsp;Xinyu Wang ,&nbsp;Zhanpeng Sun ,&nbsp;Xueya Li ,&nbsp;Xianyu Liu ,&nbsp;Zhigang Fan","doi":"10.1016/j.matlet.2025.138886","DOIUrl":"10.1016/j.matlet.2025.138886","url":null,"abstract":"<div><div>VOPO<sub>4</sub> (VOP) materials are considered as high voltage cathodes for zinc-ion battery (ZIB). However, the VOP cathodes are afflicted with poor stability in aqueous electrolyte, leading to unsatisfied cycle life. Herein, eutectic electrolyte has been applied for the Zn//VOP battery, assembling with dimethyl sulfone and Zn(ClO<sub>4</sub>)<sub>2</sub>·6H<sub>2</sub>O. Compared with aqueous Zn(ClO<sub>4</sub>)<sub>2</sub> electrolyte, the eutectic electrolyte possesses stable electrochemical window, which could suppress the side reaction. Owing to the stability of eutectic electrolyte, the Zn//VOP battery deliver a high capacity of 79.8 mAh g<sup>−1</sup> with high average voltage of 1.46 V and stable for 750 cycles. These results indicate that eutectic electrolyte approach represents an effective strategy for improving electrochemical performance of ZIB.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138886"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Surface polymerization of tannins and carboxymethyl chitosan improves water purification of polyethersulfone hollow fiber membranes 单宁和羧甲基壳聚糖的表面聚合提高了聚醚砜中空纤维膜的水净化性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-06 DOI: 10.1016/j.matlet.2025.138892
JiYuan Zhang , Rui Xiao , Yuan Gao , Jing Zhang , ShuJuan Wang , Li Yin , De Sun
{"title":"Surface polymerization of tannins and carboxymethyl chitosan improves water purification of polyethersulfone hollow fiber membranes","authors":"JiYuan Zhang ,&nbsp;Rui Xiao ,&nbsp;Yuan Gao ,&nbsp;Jing Zhang ,&nbsp;ShuJuan Wang ,&nbsp;Li Yin ,&nbsp;De Sun","doi":"10.1016/j.matlet.2025.138892","DOIUrl":"10.1016/j.matlet.2025.138892","url":null,"abstract":"<div><div>Polyethersulfone (PES) has excellent chemical stability and has been widely used in many fields, but its low hydrophilicity limits its application in water treatment. In this study, hydrophilic modification of PES hollow fiber membranes （PES-TA) was studied by impregnation method with tannic acid （TA） as modifier. In order to solve the problem that TA is easy to oxidize into quinone, carboxymethylchitosan (CMCS) was added into the TA solution to prepare PES-TA-CMCS membrane. With the increase of CMCS amount, the water contact angle of the membrane further decreased, and the flux increased first and then decreased. The flux of PES-TA-CMCS was 105.72L/m<sup>2</sup>h and the rejection rate was 100.00 % when the CMCS concentration was 1.08 × 10<sup>−3</sup>mol/L. One-month oxidation experiments proved that the stability of PES-TA-CMCS was higher than that of PES-TA.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138892"},"PeriodicalIF":2.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信