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Plasma-exfoliated g-C_(3)N_(4) with oxygen doping: tailoring photocatalytic properties

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Frontiers of Chemical Science and Engineering 2024年第2期18卷 27-39页

作者： Yuxin Li Junxin Guo rui han Zhao Wang National Engineering Research Centre of Industry Crystallization Technology School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Heteroatom doping and defect engineering have been proposed as effective ways to modulate the energy band structure and improve the photocatalytic activity of g-C_(3)N_(4). In this work, ultrathin defective g-C_(3)N_(4) was successfully prepared using cold plasma. Plasma exfoliation reduces the thickness of g-C_(3)N_(4) from 10 nm to 3 nm, while simultaneously introducing a large number of nitrogen defects and oxygen atoms into g-C_(3)N_(4). The amount of doped O was regulated by varying the time and power of the plasma treatment. Due to N vacancies, O atoms formed strong bonds with C atoms, resulting in O doping in g-C_(3)N_(4). The mechanism of plasma treatment involves oxygen etching and gas expansion. Photocatalytic experiments demonstrated that appropriate amount of O doping improved the photocatalytic degradation of rhodamine B compared with pure g-C_(3)N_(4). The introduction of O optimized the energy band structure and photoelectric properties of g-C_(3)N_(4). Active species trapping experiments revealed ·O_(2)^(–) as the main active species during the degradation.

关键词： graphitic carbon nitride cold plasma oxygen doping nitrogen defect visible-light photocatalysis

A metal-OH group modification strategy to prepare highly-hydrophobic MIL-53-Al for efficient acetone capture under humid conditions

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Journal of Environmental Sciences 2021年第9期33卷 111-123页

作者： Jiaqi Shi rui han Shuangchun Lu Qingling Liu Tianjin Key Lab of Indoor Air Environmental Quality Control School of Environmental Science and TechnologyTianjin UniversityTianjin 300350China State Key Laboratory of Engines Tianjin UniversityTianjin 300350China

A series of highly-hydrophobic MIL-53-Al(MIL = Materials of Institut Lavoisier) frameworks synthesized via decoration of the Al-OH groups by alkyl phosphonic acid were developed as adsorbents for removing acetone from humid gas *** newly prepared materials were characterized by X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR), scanning electron microscope(SEM), N_(2) adsorption-desorption and thermogravimetric analysis(TGA).Their adsorption behaviors toward acetone vapor under dry and wet conditions were studied *** showed that alkyl phosphonic acid was successfully grafted into MIL-53-Al skeleton through coordinating interaction with Al3+generating MIL-53-Al@C_(x)(x = 12, 14, 18).The MIL-53-Al@C_(x) exhibited similar crystal structure and thermal stability to parent ***, the modified materials showed significantly enhanced *** water vapor uptake of MIL-53-Al@C_(14) decreased by 72.55%at 75% relative humidity(RH).Dynamic adsorption experiments demonstrated that water vapor had almost no effect on the acetone adsorption performance of MIL-53-Al@C_(14).Under the condition of 90% RH, the acetone adsorption capacity of MIL-53-Al@C_(14) was 102.98% higher than that of ***, MIL-53-Al@C_(14) presented excellent adsorption reversibility and regeneration performance in 10 adsorption-desorption *** together, the strategy of metal-OH group modification is an attractive way to improve the acetone adsorption performance over metal-organic frameworks(MOFs) under humid ***, MIL-53-Al@C_(14) would be deemed as a promising candidate for capturing acetone in high moisture environment.

关键词： Hydrophobization Alkyl phosphonic acid Al-OH groups Adsorption Moisture

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基于中间态的网络安全机器翻译模型

华北理工大学学报（自然科学版） 2025年第1期47卷 43-52页

作者：韩睿于复兴董海琳韩阳华北理工大学人工智能学院河北唐山063210 河北省工业智能感知重点实验室河北唐山063210 华北理工大学外国语学院河北唐山063210 华北理工大学理学院河北唐山063210

针对网络安全领域的中译英机器翻译存在大量专业术语,数据规模小以及不同语言的句法结构存在差异等问题,提出了一种基于中间态的网络安全机器翻译模型。通过研究中英句法结构上的差异,制定将中文转换为中间态的规则。结合BERT与SpaCy生... 详细信息

针对网络安全领域的中译英机器翻译存在大量专业术语,数据规模小以及不同语言的句法结构存在差异等问题,提出了一种基于中间态的网络安全机器翻译模型。通过研究中英句法结构上的差异,制定将中文转换为中间态的规则。结合BERT与SpaCy生成包含语义嵌入的中间态词向量,利用BERT捕捉句子的上下文语义信息,通过SpaCy解析依存关系,将两者整合为高维特征向量。实验结果表明,所提出的翻译模型在低资源网络安全双语数据集BLEU值达到了28.2,提升了1.0个BLEU值,WMT18公开中英双语数据集BLEU值达到了21.1,提升了0.9个BLEU值。可见通过中间态以及捕捉上下文语义信息和句法结构信息,模型能够更准确地处理专业术语、复杂句法等问题。

关键词：网络安全机器翻译依存分析 Transformer模型

Cytoskeleton-associated protein tyrosine phosphorylation involved in induction of differentiation in mouse melanoma cells

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Chinese Science Bulletin 1999年第4期44卷 335-339页

作者： Chunhong Yan rui han Chinese Acad Med Sci Inst Mat Med Beijing 100050 Peoples R China Peking Union Med Coll Beijing 100050 Peoples R China

The malignancy of a cancer is due partly to its poor differentiation. Genistein, a protein tyrosine kinase inhibitor, is found to induce the highly malignant B16-BL6 mouse melanoma cells to differentiate to mature phenotypes. When Triton X-100 insoluble fraction of the differentiated cells is prepared and analyzed, tyrosine phosphorylation levels of three cytoskeleton-associated proteins (65, 60 and 53 ku respectively) are found to decrease dramatically. But no any change is found when phosphotyrosine contents of the cytosol fraction or the total cellular protein preparations are evaluated. It is concluded that cytoskeleton-associated protein tyrosine phosphorylation may be involved in the control of differentiation of cancer cells. The decrease of phosphotyrosine contents of cytoskeleton-associated proteins may be one of the important mechanisms underlying the differentiation induction of cancer cells by anticancer agents.

关键词： cytoskeleton-associated protein protein tyrosine phosphorylation cancer cell differentiation protein tyrosine ki-nase inhibitor.

Scalable synthesis of nanoporous high entropy alloys for electrocatalytic oxygen evolution

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Rare Metals 2022年第1期41卷 125-131页

作者： Li-Hua Liu Ning Li Mei han Jing-rui han Hong-Yan Liang College of Innovation&Entrepreneurship Shanghai Jianqiao UniversityShanghai 201306China School of Materials Science and Engineering Tianjin UniversityTianjin 300350China

High entropy alloys(HEAs)containing five or more equimolar components have shown promising catalytic performance due to their unique chemical and mechanical ***,it is still challenging to prepare scalable and efficient nanoporous HEAs as ***,we present a facile strategy to synthesize largescale nanoporous HEAs particles by combing vacuum induction melting,gas atomization,and acidic etching *** application of HEAs to energy conversion is evaluated with electrocatalytic oxygen evolution reaction(OER)on AlCrCuFeNi *** HEAs exhibit a low OER overpotential of 270 mV to achieve a current density of 10 mA·cm^(-2),a small Tafel slope of 77.5 mV·dec^(-1),and long-term stability for over 35 h in 1 mol·L^(-1) KOH,which is comparable to the state-of-the-art OER electrocatalyst *** findings in this paper not only provide an industrial approach to produce nanoporous HEAs powder but also inspire the applications of HEAs as catalysts.

关键词： High entropy alloys Gas atomization Acidic etching Nanoporous AlCrFeNiCu structures Oxygen evolution reaction

Evaluation and Projection of Population Exposure to Temperature Extremes over the Beijing−Tianjin−Hebei Region Using a High-Resolution Regional Climate Model RegCM4 Ensemble

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Advances in Atmospheric Sciences 2024年第6期41卷 1132-1146页

作者： Peihua QIN Zhenghui XIE rui han Buchun LIU State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences(CAAS)Beijing 100081China

Temperature extremes over rapidly urbanizing regions with high population densities have been scrutinized due to their severe impacts on human safety and *** of all,the performance of the regional climate model RegCM4 with a hydrostatic or non-hydrostatic dynamic core in simulating seasonal temperature and temperature extremes was evaluated over the historical period of 1991–99 at a 12-km spatial resolution over China and a 3-km resolution over the Beijing−Tianjin−Hebei(JJJ)region,a typical urban agglomeration of *** of spatial distributions of temperature extremes over the JJJ region using RegCM4 with hydrostatic and non-hydrostatic cores showed high spatial correlations of more than 0.8 with the *** a warming climate,temperature extremes of annual maximum daily temperature(TXx)and summer days(SU)in China and the JJJ region showed obvious increases by the end of the 21st century while there was a general reduction in frost days(FD).The ensemble of RegCM4 with different land surface components was used to examine population exposure to temperature extremes over the JJJ *** exposure to temperature extremes was found to decrease in 2091−99 relative to 1991−99 over the majority of the JJJ region due to the joint impacts of increases in temperature extremes over the JJJ and population decreases over the JJJ region,except for downtown ***,changes in population exposure to temperature extremes were mainly dominated by future population ***,we quantified changes in exposure to temperature extremes with temperature increase over the JJJ *** study helps to provide relevant policies to respond future climate risks over the JJJ region.

关键词： CMIP6 convection-permitting population exposure RegCM4 temperature extremes

A 9×9 matrix representation of Temperley-Lieb algebra and corresponding entanglement

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Chinese Physics B 2012年第2期21卷 94-97页

作者： Gou Li-Dan Zhu rui-han School of Science Changchun University of Science and TechnologyChangchun 130022China

We present the matrix U. The 9 × 9 U matrix is a representation of specialized Temperley-Lieb algebra. Based on which, a unitary R matrix is generated via the Yang-Baxterization approach. The 9 × 9 R matrix, a so... 详细信息

关键词： Temperley-Lieb algebra. Yang-Baxter equation entanglement

β-decay studies approaching the N=20 island of inversion with a new shell-model Hamiltonian

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Science China(Physics,Mechanics & Astronomy) 2017年第8期60卷 15-20页

作者： WeiGuang Jiang BaiShan Hu FuRong Xu rui han Hui Hua School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University

β-decay properties of N=18-22,Z=10-14 nuclei are analyzed with a new shell-model Hamiltonian using the Gogny densitydependent *** Gogny force which has been widely and successfully used in mean-field theory can provide reasonable two-body matrix elements for cross-shell *** log f t values andβ-decay level schemes are systematically studied using the D1S-Gogny interaction and compared with the SDPF-M results and experimental *** is shown that the new Hamiltonian provides reliable results forβ-decay along with subtle level schemes for this ***-model calculations with Gogny interaction can lead to a successful description of nuclei in and around the N=20 island of inversion and supplements experiment where sufficient data are not available.

关键词： island of inversion β decay shell model Gogny interaction

Multiparty semiquantum key agreement without entanglement

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Communications in Theoretical Physics 2020年第6期72卷 70-75页

作者： Ming-Ming Wang rui-Fan han Lin-Ming Gong Shaanxi Key Laboratory of Clothing Intelligence State and Local Joint Engineering Research Center for Advanced Networking and Intelligent Information ServicesSchool of Computer ScienceXi'an Polytechnic UniversityXi'an 710048China

The key agreement protocols allow two or more users to negotiate a shared key for establishing a secure communication channel without a third trusted party in such a way that the shared key is determined by all authorized players rather than any subset of *** propose the first real multiparty semiquantum key agreement(SQKA)protocols based on *** protocols include only one quantum player,while the others are classical players who only need to measure and prepare states in the classical *** first present a symmetric three-party SQKA protocol,where two classical players can fairly negotiate a key with a quantum player by using single-photons as message *** we present an asymmetric SQKA protocol where a relatively low percentage of quantum states are used for eavesdropping *** we further extend them to an asymmetric multiparty SQKA *** SQKA protocols require fewer quantum resources than the previous SQKA protocols for classical players,especially without requirement of entanglement,which makes them easier to implement using current *** protocols are secure against external eavesdroppers and are fair against a minority of internal dishonest players.

关键词： multiparty semiquantum key agreement single-photon fairness efficiency symmetric and asymmetric protocol