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Journal of Materiomics 2023年第2期9卷 353-361页

作者： Yu-Cheng Tang Yang Yin ai-zhen song He-Zhang Li Bo-Ping Zhang School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China National Institute for Materials Science(NIMS)1-2-1 Sengen TsukubaIbaraki305-0047Japan

It is well-known that the performance of BiFeO3eBaTiO3(BF-BT)ceramics is sensitive to composition,calcining and sintering temperature(Tcal and Tsint)due to the formation of Bi25FeO39 and/or Bi2Fe4O9 impurities and/or the volatilization of Bi_(2)O_(3).We report remarkably stable electrical properties over the range of0.03≤x≤0.05 and 930℃≤Tsint≤970C in 0.7Bi(1þx)FeO_(3)-0.3BaTiO_(3)ceramics prepared by one-step *** method avoids the thermodynamically unstable region of BiFeO_(3)and prevents the formation of Bi25FeO39 and/or Bi_(2)Fe_(4)O_(9)impurities even when the addition of a-Bi_(2)O_(3)raw material is intentionally deficient or rich to make off-stoichiometric BF-BT,thus greatly improving the robustness of compositional and ***-pseudocubic phase coexists in all ceramics,and their CR/CPC fraction are 48.0/52.0e50.6/49.4 and 55.9/44.1e56.6/43.4 when x increases from0.05≤x≤0 to 0.01≤x≤*** stable electrical properties of d33¼180e205 pC/N,Pr¼17.9e23.8 mC/cm^(2),and TC¼485e518℃are *** maximum d_(33T)/d_(33RT)of BF-BT is twice that of soft PZT,superior to most the-state-of-art lead-free *** results provide a synthesis strategy for designing high performance piezoelectric materials with good stability and easy industrialization.

关键词： BiFeO_(3)-BaTiO_(3) Lead-free ceramics One-step process Electrical properties Thermal stability

Enhanced energy storage properties and antiferroelectric stability of Mn-doped NaNbO_(3)-CaHfO_(3) lead-free ceramics:Regulating phase structure and tolerance factor

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Journal of Materiomics 2022年第3期8卷 611-617页

作者： Yang Yin Jing-Ru Yu Yu-Cheng Tang ai-zhen song Huan Liu Dong Yang Jing-Feng Li Lei Zhao Bo-Ping Zhang School of Materials Science and Engineering University of Science and Technology Beijing100083BeijingChina School of Materials Science and Engineering Tsinghua University100084BeijingChina College of Physics Science and Technology Hebei University071002BaodingChina

NaNbO_(3)-based ceramics usually show ferroelectric-like P-E loops at room temperature due to the irreversible transformation of the antiferroelectric orthorhombic phase to ferroelectric orthorhombic phase,which is not conducive to energy storage *** previous work found that incorporating CaHfO_(3) into NaNbO_(3) can stabilize its antiferroelectric phase by reducing the tolerance factor(t),as indicated by the appearance of characteristic double P-E ***,a small amount of MnO_(2) addition effectively regulate the phase structure and tolerance factor of 0.94NaNbO_(3)-0.06CaHfO_(3)(0.94NN-0.06CH),which can further improve the stability of *** XRD and XPS results reveal that the Mn ions preferentially replace A-sites and then B-sites as increasing MnO_(2).The antiferroelectric orthorhombic phase first increases and then decreases,while the t shows the reversed trend,thus an enhanced antiferroelectricity and the energy storage density Wrec of 1.69 J/cm^(3) at 240 kV/cm are obtained for 0.94NN-0.06CH-0.5%MnO_(2)(in mass fraction).With the increase of Mn content to 1.0%from 0.5%,the efficiency increases to 81% from 45%,although the energy storage density decreases to 1.31 J/cm^(3) due to both increased tolerance factor and non-polar phase.

关键词： NaNbO_(3) Antiferroelectric ceramic Tolerance factor Energy-storage density

Discovery of primary lung cancer following resection of rectal cancer lung metastasis:A case report

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World Journal of Clinical Oncology 2025年第2期16卷 173-179页

作者： Fei-Yan Zhou Fang-Hua song zhen-Hao Cheng Sen Wu Department of Oncology II Xinhua HospitalDalian UniversityDalian 116000Liaoning ProvinceChina

BACKGROUND Colorectal cancer(CRC)ranks high among the most common types of malignant *** primary cause of cancer-related mortality is metastasis,with lung metastases accounting for 32.9%of all cases of metastatic CRC(MCRC).However,cases of MCRC in the lungs,which present concurrently with primary peripheral lung adenocarcinoma,are exceptionally *** SUMMARY This report describes the case of a 52-year-old female patient who,following a colonoscopy,was diagnosed with moderately differentiated adenocarcinoma based on rectal mucosal biopsy findings.A preoperative chest computed tomography scan revealed a ground-glass nodule in the right lung and a small nodule(approximately 0.6 cm in diameter)in the extramural basal segment of the left lower lobe,which suggested multiple lung metastases from rectal *** treatment and follow-up led to a diagnosis of rectal cancer with left lung metastasis and peripheral adenocarcinoma of the lower lobe of the right *** This case report describes the therapeutic journey of a patient with lung metastasis from rectal cancer in addition to primary peripheral adenocarcinoma,thus underscoring the critical roles of multidisciplinary collaboration,personalized treatment strategies,and comprehensive patient rehabilitation guidance.

关键词： Rectal cancer Metastatic lung cancer Peripheral lung adenocarcinoma Double primary cancer Case report

Hydrogen sulfide reduces oxidative stress in Huntington's disease via Nrf2

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Neural Regeneration Research 2025年第6期20卷 1776-1788页

作者： Zige Jiang Dexiang Liu Tingting Li Chengcheng Gai Danqing Xin Yijing Zhao Yan song Yahong Cheng Tong Li zhen Wang Department of Physiology School of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Medical Psychology and Ethics School of Basic Medicine SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Neurosurgery Surgery Qingdao Municipal HospitalQingdaoShandong ProvinceChina

The pathophysiology of Huntington's disease involves high levels of the neurotoxin quinolinic acid. Quinolinic acid accumulation results in oxidative stress, which leads to neurotoxicity. However, the molecular and cellular mechanisms by which quinolinic acid contributes to Huntington's disease pathology remain unknown. In this study, we established in vitro and in vivo models of Huntington's disease by administering quinolinic acid to the PC12 neuronal cell line and the striatum of mice, respectively. We observed a decrease in the levels of hydrogen sulfide in both PC12 cells and mouse serum, which was accompanied by down-regulation of cystathionine β-synthase, an enzyme responsible for hydrogen sulfide production. However, treatment with NaHS(a hydrogen sulfide donor) increased hydrogen sulfide levels in the neurons and in mouse serum, as well as cystathionine β-synthase expression in the neurons and the mouse striatum, while also improving oxidative imbalance and mitochondrial dysfunction in PC12 cells and the mouse striatum. These beneficial effects correlated with upregulation of nuclear factor erythroid 2-related factor 2 expression. Finally, treatment with the nuclear factor erythroid 2-related factor 2inhibitor ML385 reversed the beneficial impact of exogenous hydrogen sulfide on quinolinic acid-induced oxidative stress. Taken together, our findings show that hydrogen sulfide reduces oxidative stress in Huntington's disease by activating nuclear factor erythroid 2-related factor 2,suggesting that hydrogen sulfide is a novel neuroprotective drug candidate for treating patients with Huntington's disease.

关键词： apoptosis cystathionine-β-synthase nuclear factor erythroid 2-related factor 2 Huntington's disease hydrogen sulfide mitochondrion neuroplasticity oxidative stress quinolinic acid reactive oxygen species

De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2025年第01期 174-180页

作者： Fan-Xiao Meng Xing-Yu Wang Ka Lu Ju-song Yang Fu-Min Zhang ai-Jun Ma Bao Du Yong-Qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi University

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

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Dense Face Network:A Dense Face Detector Based on Global Context and Visual Attention Mechanism

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Machine Intelligence Research 2022年第3期19卷 247-256页

作者： Lin song Jin-Fu Yang Qing-zhen Shang Ming-ai Li Faculty of Information Technology Beijing University of TechnologyBeijing 100124China Beijing Key Laboratory of Computational Intelligence and Intelligent Systems Beijing 100124China

Face detection has achieved tremendous strides thanks to convolutional neural networks. However, dense face detection remains an open challenge due to large face scale variation, tiny faces, and serious occlusion. This paper presents a robust, dense face detector using global context and visual attention mechanisms which can significantly improve detection accuracy. Specifically, a global context fusion module with top-down feedback is proposed to improve the ability to identify tiny faces. Moreover, a visual attention mechanism is employed to solve the problem of occlusion. Experimental results on the public face datasets WIDER FACE and FDDB demonstrate the effectiveness of the proposed method.

关键词： Face detection global context attention mechanism computer vision deep learning

Hydrometallurgical recovery of lithium carbonate and iron phosphate from blended cathode materials of spent lithium-ion battery

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Rare Metals 2024年第3期43卷 1275-1287页

作者： Shao-Le song Run-Qing Liu Miao-Miao Sun ai-Gang zhen Fan-zhen Kong Yue Yang School of Minerals Processing and Bioengineering Central South UniversityChangsha410083China Zhejiang Tianneng New Materials Co. Ltd.Huzhou313103China

The recycling of cathode materials from spent lithium-ion battery has attracted extensive attention,but few research have focused on spent blended cathode *** reality,the blended materials of lithium iron phosphate and ternary are widely used in electric vehicles,so it is critical to design an effective recycling *** this study,an efficient method for recovering Li and Fe from the blended cathode materials of spent LiFePO_(4)and LiNi_(x)Co_(y)Mn_(1-x-y)O_(2)batteries is ***,87%A1 was removed by alkali ***,91.65%Li,72.08%Ni,64.6%Co and 71.66%Mn were further separated by selective leaching with H_(2)SO_(4)and H_(2)O_(2).Li,Ni,Co and Mn in solution were recovered in the form of Li_(2)CO_(3)and hydroxide ***,98.38%Fe was leached from the residue by two stage process,and it is recovered as FePO_(4)·2H_(2)O with a purity of 99.5%by *** and P were present in FePO_(4)·2H_(2)O in amounts of 28.34%and 15.98%,***,the drift and control of various components were discussed,and cost-benefit analysis was used to assess the feasibility of potential application.

关键词： Spent lithium-ion battery Blended cathode materials Recovery Lithium carbonate Iron phosphate

Low-temperature Synthesis of MoS2 @ CoS2 Heterostructures in KSCN Molten Salt for Efficient Hydrogen Evolution Reaction

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材料导报 2020年第18期34卷 18001-18002页

作者： ai Wei HE song Institute of Flexible Electronics Northwestern Polytechnical UniversityXi’an 710072China

Transition metal sulfides(TMSs)have been recognized as potential electrocatalysts for hydrogen evolution reaction(HER),where the edges and defects of TMSs are known as the active sites[1-2].MoS2 with layered crystal structure is so far the most frequently investigated one,however,the associated HER activi-ty is restricted by its low conductivity because of the wide bandgap(1.73 eV)[3-4].Although constructing heterostructures,for example,MoS2@CoS2,presents higher HER activity,the synthetic methods are generally limited by either high-pressure hydrothermal or high-temperature annealing procedures,which lead to unsatisfactory electrochemical performance and low pro-ductivity[5-6].

关键词： annealing sulfide Transition

Origin of soft-sediment deformation structures in Nihewan Basin

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Journal of Palaeogeography 2022年第3期11卷 332-359页

作者： De-Chen Su ai-Ping Sun Zhao-Li Li song-Yong Chen zhen-Jie Wu Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing100037China Jiangsu Donghai Continental Deep Hole Crustal Activity National Observation and Research Station China

The Nihewan Basin is a rift basin at the junction of northern Shanxi Province and northwestern Hebei Province in north *** basin is known for its rich paleontological fossils and ancient human *** are also abundant soft-sediment deformation structures(SSDS)in the thick lacustrine ***,most SSDS have been interpreted as ice-edge features or ignored ***,the authors have carried out several field surveys in the Nihewan Basin and found that many SSDS are sandwiched between normal lacustrine strata at multiple *** the excavation pit at the 10th Locality of Maliang Site(ML10),10 horizontal SSDS layers and two vertically developed geological features have been *** on genesis analysis and related criteria,these features are divided into two categories:cryoturbation-triggered SSDS and earthquake-triggered *** them,a special type of ancient ice-wedge pseudomorph(SSDS-8)of ML10 is recognized in the basin for the first *** other 9 horizontal SSDS are mainly caused by earthquake-triggered liquefaction and *** can be further divided into 14 seismic event *** findings indicate that the tectonic activity in the Nihewan Basin is very strong and frequent,and there were cold periods in the geological history of the *** the same time,the SSDS with distinct morphological characteristics and stable horizontal distribution in the basin can be used as an important indicator of stratigraphic correlation.

关键词： Nihewan Basin Soft-sediment deformation structures(SSDS) Paleoearthquake Freezing-and-thawing Ice-wedge Palaeolithic site

Crystal-field splitting of Ce^(3+)in narrow-band phosphor SrLiAl_(3)N_(4)

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Journal of Rare Earths 2021年第4期39卷 386-389页

作者： zhen song Quanlin Liu Beijing Key Laboratory for New Energy Materials and Technologies School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China

As a promising narrow-band phosphor,SrLiAl_(3)N_(4)has a seemingly ultra-small total crystal-field splitting of only 2400 cm^(-1)with Ce^(3+)as dopant *** paper is devoted to unravel this anomalous phenomenon based on semi-quantitative crystal-field *** results show that there may exist undetected excitation peaks immersed in the host excitation band,and the calibrated crystal-field splitting is 27000 cm^(-1).comparable to those of other Ce^(3+)doped *** the end the effect of polyhedral deformation on energy level is briefly discussed.

关键词： Crystal-field splitting SrLiAl_(3)N_(4) Narrow band Phosphor Rare earths