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16篇 您的检索式:作者名="WU HaiChen"
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1B-doped and La_(4)NiLiO_(8)-coated Ni-rich cathode with enhanced structural and interfacial stability for lithium-ion batteries显示文摘Ni-rich layered oxides are considered promising cathodes for advanced lithium-ion batteries(LIBs)in the future,owing to their high capacity and low cost.However,the issues on structural and interfacial stability of Ni-rich cathodes still pose substantial obstacles in the practical application of advanced LIBs.Here,we employ a one-step method to synthesize a B-doped and La_(4)NiLiO_(8)-coated LiNi_(0.82)5Co_(0.115)Mn_(0.06)O_(2)(BL-1)cathode with reliable structure and interface,for the first time.The La_(4)NiLiO_(8)coating layer can prevent cathodes from electrolyte assault and facilitate Li+diffusion kinetics.Moreover,B-doping can effectively restrain the pernicious H_(2)-H_(3) phase transition and adjust the orientation of primary particles to a radial alignment,which is obstructive to the arise of microcracks induced by the change of anisotropic volume.Specifically,when tested in pouch cells,the BL-1 cathode exhibits outstanding capacity retention of 93.49%after 500 cycles at 1 C.This dual-modification strategy dramatically enhances the stability of the structure and interface for Ni-rich cathode materials,consequently accelerating the commercialization process of high-energy–density LIBs.Lingjun Li Lizhi Fu Miao Li Chu Wang Zixiang Zhao Shangchen Xie Haichen Lin Xianwen Wu Haodong Liu Li Zhang Qiaobao Zhang Lei Tan 2022Journal of Energy Chemistry2022,31,8:10
2Acoustofluidic separation enables early diagnosis of traumatic brain injury based on circulating exosomes显示文摘Traumatic brain injury(TBI)is a global cause of morbidity and mortality.Initial management and risk stratification of patients with TBI is made difficult by the relative insensitivity of screening radiographic studies as well as by the absence of a widely available,noninvasive diagnostic biomarker.In particular,a blood-based biomarker assay could provide a quick and minimally invasive process to stratify risk and guide early management strategies in patients with mild TBI(mTBI).Analysis of circulating exosomes allows the potential for rapid and specific identification of tissue injury.By applying acoustofluidic exosome separation—which uses a combination of microfluidics and acoustics to separate bioparticles based on differences in size and acoustic properties—we successfully isolated exosomes from plasma samples obtained from mice after TBI.Acoustofluidic isolation eliminated interference from other blood components,making it possible to detect exosomal biomarkers for TBI via flow cytometry.Flow cytometry analysis indicated that exosomal biomarkers for TBI increase in the first 24 h following head trauma,indicating the potential of using circulating exosomes for the rapid diagnosis of TBI.Elevated levels of TBI biomarkers were only detected in the samples separated via acoustofluidics;no changes were observed in the analysis of the raw plasma sample.This finding demonstrated the necessity of sample purification prior to exosomal biomarker analysis.Since acoustofluidic exosome separation can easily be integrated with downstream analysis methods,it shows great potential for improving early diagnosis and treatment decisions associated with TBI.Zeyu Wang Haichen Wang Ryan Becker Joseph Rufo Shujie Yang Brian E.Mace Mengxi Wu Jun Zou Daniel T.Laskowitz Tony Jun Huang 2021Microsystems & Nanoengineering2021,7,2:3
3Chemistry of carbon nanotubes in biomedical applications显示文摘WU Haichen CHANG Xueling LIU Lei 0,,06:1
4Chemistry of carbon nanotubes in biomedical applications显示文摘WU Haichen CHANG Xuelingf LIU Lei 2010J Mater Chem2010,20,6:1
5Twinning,phase boundary structure and development of high coercivity in Fe-rich Sm_(2)Co_(17)-type magnets显示文摘The microstructure of twinning as well as the phase boundary between 1:5 H and 2:17 R phase in Fe-rich Sm_(2)Co_(17)-type magnets was characterized at atomic scale using nanobeam diffraction and highresolution STEM-HAADF imaging,and the reason for the dramatic increase of coercivity during slow cooling was investigated based on the microchemistry analysis.The twinning relationship in the 2:17 R phase originates from ordered substitution of Sm atoms by Co-Co atomic pairs on every three(3033)and(3033)planes,leading to formation of two corresponding equivalent twin variants.The basal plane of the 2:17 R phase,the 1:3 R platelet phase across the 2:17 R cell and the 1:5 H cell boundary phase between two adjacent 2:17 R cells all can act as effective twin boundary.The cell boundary phase is precipitated along the pyramidal habit plane,and a fully coherent phase boundary(PB)is formed between the 1:5 H and 2:17 R phases with the orientation relationship to be PB//(1121)1:5 H//(1011)_(2):17 R.The phase boundary may either be parallel to or intersect with the pyramidal planes occupied by Co-Co atomic pairs.The substantial increase of coercivity during slow cooling is ascribed to the development of large gradient of the elements concentration within the cell boundary phase,resulting in large gradient of domain wall energy,and thus the pinning strength of the cell boundary phase against magnetic domain wall motion is significantly enhanced.Haichen Wu Zhuang Liu Chaoyue Zhang Qiqi Yang Huanming Lu Guoxin Chen Xinming Wang Yong Li Renjie Chen Aru Yan 2022Journal of Rare Earths2022,40,1:1
6Enhancement of catalytic and anti-carbon deposition performance of SAPO-34/ZSM-5/quartz films in MTA reaction by Si/Al ratio regulation显示文摘In order to further improve the catalytic performance of zeolite catalyst for methanol to aromatics(MTA)technology, the double-tier SAPO-34/ZSM-5/quartz composite zeolite films were successfully synthesized via hydrothermal crystallization. The Si/Al ratio of SAPO-34 film was used as the only variable to study this material. The composite zeolite material with 0.6Si/Al ratio of SAPO-34 has the largest mesoporous specific surface area and the most suitable acid distribution. The catalytic performance for the MTA process showed that 0.6-SAPO-34/ZSM-5/quartz film has as high as 50.3% benzene-toluenexylene selectivity and 670 min lifetime. The MTA reaction is carried out through the path we designed to effectively avoid the hydrocarbon pool circulation of ZSM-5 zeolite, so as to improve the aromatics selectivity and inhibit the occurrence of deep side reactions to a great extent. The coke deposition behavior was monitored by thermogravimetric analysis and gas chromatograph/mass spectrometer, it is found that with the increase of Si/Al ratio, the active intermediates changed from low-substituted methylbenzene to high-substituted methylbenzene, which led to the rapid deactivation of the catalyst. This work provides a possibility to employ the synergy effect of composite zeolite film synthesizing anti-carbon deposition catalyst in MTA reaction.Jiaxin Wu Chenxiao Wang Xianliang Meng Haichen Liu Ruizhi Chu Guoguang Wu Weisong Li Xiaofeng Jiang Deguang Yang 2023Chinese Journal of Chemical Engineering2023,56,4:1
7Early Diagnosis of Bipolar Disorder Coming Soon:Application of an Oxidative Stress Injury Biomarker(BIOS)Model显示文摘Early distinction of bipolar disorder(BD)from major depressive disorder(MDD)is difficult since no tools are available to estimate the risk of BD.In this study,we aimed to develop and validate a model of oxidative stress injury for predicting BD.Data were collected from 1252 BD and 1359 MDD patients,including 64 MDD patients identified as converting to BD from 2009 through 2018.30 variables from a randomly-selected subsample of 1827(70%)patients were used to develop the model,including age,sex,oxidative stress markers(uric acid,bilirubin,albumin,and prealbumin),sex hormones,cytokines,thyroid and liver function,and glycolipid metabolism.Univariate analyses and the Least Absolute Shrinkage and Selection Operator were applied for data dimension reduction and variable selection.Multivariable logistic regression was used to construct a model for predicting bipolar disorder by oxidative stress biomarkers(BIOS)on a nomogram.Internal validation was assessed in the remaining 784 patients(30%),and independent external validation was done with data from 3797 matched patients from five other hospitals in China.10 predictors,mainly oxidative stress markers,were shown on the nomogram.The BIOS model showed good discrimination in the training sample,with an AUC of 75.1%(95%CI:72.9%–77.3%),sensitivity of 0.66,and specificity of 0.73.The discrimination was good both in internal validation(AUC 72.1%,68.6%–75.6%)and external validation(AUC 65.7%,63.9%–67.5%).In this study,we developed a nomogram centered on oxidative stress injury,which could help in the individualized prediction of BD.For better real-world practice,a set of measurements,especially on oxidative stress markers,should be emphasized using big data in psychiatry.Zhiang Niu Xiaohui Wu Yuncheng Zhu Lu Yang Yifan Shi Yun Wang Hong Qiu Wenjie Gu Yina Wu Xiangyun Long Zheng Lu Shaohua Hu Zhijian Yao Haichen Yang Tiebang Liu Yong Xia Zhiyu Chen Jun Chen Yiru Fang 2022Neuroscience Bulletin2022,38,9:1
8Chemistry of carbonnanotubes in biomedical applications显示文摘WU Haichen CHANG Xueling LIU Lei 2010J Mater Chem2010,20,6:1
9Chemistry of carbon nanotubes in biomedical applications 显示文摘WU Haichen CHANG Xueling LIU Lei et ol 2010JMater Chem2010,20,6:1
10Space advanced technology demonstration satellite显示文摘The Space Advanced Technology demonstration satellite(SATech-01),a mission for low-cost space science and new technology experiments,organized by Chinese Academy of Sciences(CAS),was successfully launched into a Sun-synchronous orbit at an altitude of~500 km on July 27,2022,from the Jiuquan Satellite Launch Centre.Serving as an experimental platform for space science exploration and the demonstration of advanced common technologies in orbit,SATech-01 is equipped with 16 experimental payloads,including the solar upper transition region imager(SUTRI),the lobster eye imager for astronomy(LEIA),the high energy burst searcher(HEBS),and a High Precision Magnetic Field Measurement System based on a CPT Magnetometer(CPT).It also incorporates an imager with freeform optics,an integrated thermal imaging sensor,and a multi-functional integrated imager,etc.This paper provides an overview of SATech-01,including a technical description of the satellite and its scientific payloads,along with their on-orbit performance.ZHANG XiaoFeng CHEN Wen ZHU XiaoCheng MENG Na HE JunWang BI XingZi ZHANG YongHe SHI Qi LI Fei LIU Rui FENG ZhengGong LIU Liu LI JinSong WU HaiChen XU DongXiao LI TaiJie HUANG JiangJiang LIU Shuo LI TianTong YU XianSheng GAO Yang ZHOU Heng BAN HanYu ZHANG YanLi ZHANG YueTing YANG YingQuan HE Tao DUAN XuLiang CHEN Xin WANG YaMin SUN AnTai ZHANG KuoXiang SUN Ying WANG YaoBin FAN ChengCheng XIONG ShaoLin LI XinQiao WEN XiangYang LING ZhiXing SUN XiaoJin ZHANG Chen BAI XianYong WANG ZhanShan DENG YuanYong TIAN Hui YANG JianFeng XUE HongBo SANG Peng LIU JinGuo ZHENG HuiLong ZHU Xiang HE JianWu LI Hui XU LuXiang XU ShuYan CHEN WenWu LIU ZhenDong WANG ZhaoLi MAO XiangLong GAO Rong LI ZongXuan DING GuoPeng WANG XinYu DOU RunJiang WENG LuBin LUO Hao WANG YaPing LIANG XianFeng FANG ZiRuo 2024Science China(Technological Sciences)2024,67,1:0
11Alpha-synuclein overexpression in the olfactory bulb initiates prodromal symptoms and pathology of Parkinson’s disease显示文摘Background:Parkinson’s disease(PD)is a neurodegenerative disease characterized by intraneuronal Lewy Body(LB)aggregates composed of misfolded alpha-synuclein(α-syn).The spread of misfoldedα-syn follows a typical pattern:starting in the olfactory bulb(OB)and the gut,this pathology is followed by the progressive invasion of misfoldedα-syn to the posterior part of the brain.It is unknown whether the administration of human mutant alpha-synuclein(hm-α-syn,a human mutation which occurs in familial PD)into the OB of rats would trigger similarα-syn propagation and subsequently cause pathological changes in broader brain fields associated to PD and establish an animal model of prodromal PD.Methods:hm-α-syn was overexpressed in the OB of rats with an AAV injection.Then motor and non-motor symptoms of the SD rats were tested in different behavioral tasks following the AAV injection.In follow-up studies,pathological mechanisms ofα-syn spread were explored at the histological,biochemical and micro-structure levels.Results:The experimental results indicated that hm-α-syn was overexpressed in the OB 3 weeks after the AAV injection.1)overexpression of the Hm-α-syn in the OB by the AAV injection could transfer to wider adjacent fields beyond the monosynaptic scope.2)The number of tyrosine hydroxylase positive cells body and fibers was decreased in the substantia nigra(SN)12 weeks after AAV injection.This was consistent with decreased levels of the DA neurotransmitter.Importantly,behavioral dysfunctions were found that included olfactory impairment after 3 weeks,motor ability impairment and decreased muscular coordination on a rotarod 6 weeks after the AAV injection.3)The morphological level studies found that the Golgi staining revealed the number of neuronal branches and synapses in the OB,prefrontal cortex(PFC),hippocampus(Hip)and striatum caudate putamen(CPU)were decreased.4)phosphorylatedα-syn,at Ser-129(pSer129),was found to be increased in hm-α-syn injected animals in comparison to controls that overexpressed GFP alone,which was also found in the most of LB stained by the thioflavine S(ThS)in the SN field.5)A marker of autophagy(LC3B)was increased in serval fields,which was colacolizated with a marker of apoptosis in the SN field.Conclusions:These results demonstrate that expression of exogenous mutantα-syn in the OB induces pathological changes in the sensitive brain fields by transferring pathogenicα-syn to adjacent fields.This method may be useful for establishing an animal model of prodromal PD.Haichen Niu Lingyu Shen Tongzhou Li Chao Ren Sheng Ding Lei Wang Zhonghai Zhang Xiaoyu Liu Qiang Zhang Deqin Geng Xiujuan Wu Haiying Li 2018Translational Neurodegeneration2018,7,1:0
12Development of the high-strength ductile ferritic alloys via regulating the intragranular and grain boundary precipitation of G-phase显示文摘A typical G-phase strengthened ferritic model alloy(1Ti:Fe-20Cr-3Ni-1Ti-3Si,wt.%)has been carefully studied using both advanced experimental(EBSD,TEM and APT)and theoretical(DFT)techniques.During the classic“solid solution and aging”process,the superfine(Fe,Ni)_(2)TiSi-L2_(1)particles densely precipitate within the ferritic grain and subsequently transform into the(Ni,Fe)_(16)Ti_(6)Si_(7)-G phase.In the meanwhile,the elemental segregation at grain boundaries and the resulting precipitation of a large amount of the(Ni,Fe)_(16)Ti_(6)Si_(7)-G phase are also observed.These nanoscale microstructural evolutions result in a remarkable increase in hardness(100-300 HV)and severe embrittlement.When the“cold rolling and aging”process is used,the brittle fracture is effectively suppressed without loss of nano-precipitation strengthening ef-fect.Superhigh yield strength of 1700 MPa with 4%elongation at break is achieved.This key improvement in mechanical properties is mainly attributed to the pre-cold rolling process which effectively avoids the dense precipitation of the G-phase at the grain boundary.These findings could shed light on the further exploration of the precipitation site via optimal processing strategies.Mujin Yang Chao Huang Jiajia Han Haichen Wu Yilu Zhao Tao Yang Shenbao Jin Chenglei Wang Zhou Li Ruiying Shu Cuiping Wang Huanming Lu Gang Sha Xingjun Liu 2023Journal of Materials Science & Technology2023,,5:0
13Retraction Note: Alpha-synuclein overexpression in the olfactory bulb initiates prodromal symptoms and pathology of Parkinson’s disease显示文摘Retraction Note:Translational Neurodegeneration(2018)7:25 http://gffzzd3cc09b8251d45dfsknkfo66b5q5b6qkn.ffgz.tsg.suse.edu.cn/10.1186/s40035-018-0128-6 The Editor-in-Chief has retracted this article.After pub-lication,concerns were raised regarding image overlap across various panels in Fig.8.The authors have stated that incorrect images were used,but have been unable to provide the full raw data.Additionally,the authors could not justify the anesthetic protocol used for rat stereotaxic surgery.The Editor-in-Chief therefore no longer has con-fidence in the presented data and ethics of this article.Author Haichen Niu has stated on behalf of all co-authors that they agree to this retraction.Haichen Niu Lingyu Shen Tongzhou Li Chao Ren Sheng Ding Lei Wang Zhonghai Zhang Xiaoyu Liu Qiang Zhang Deqin Geng Xiujuan Wu Haiying Li 2022Translational Neurodegeneration2022,11,1:0
14Improving superficial microstructure and properties of the laser-processed ultrathin kerf in Ti-6Al-4V alloy by water-jet guiding显示文摘In the present research,the gas-assisted laser(GAL)and water-jet guided laser(WGL)processing technologies were applied to machine the ultrathin kerf in the wrought Ti-6Al-4V alloy.The microstructure,microhardness,and wear properties of the superficial layer were investigated.The results reveal that the GAL processing could machine the kerf with a high depth-to-width ratio of 12–15,but the increased processing times enhance the depth little.Due to the oxygen entrainment and relatively low heat and mass transferring efficiency,the assisted gas promotes the formation of a scaled recast layer containingβ-Ti phase and oxides,which increases the roughness to 20μm.The WGL processed kerf has a low depth-to-width ratio with a value of 1.9–2.5 and the depth could be increased by increasing the WGL processing times.With the assistance of the water jet,the remelted debris and heat could be eliminated immediately,which restrains the formation of the recast layer and heat-affected zone.The ultrathin oxide outer layer with hundreds of nanometers and ultrafineα-Ti grain inner layer are formed on the surface,which decreases the roughness to 12μm.Compared with the as-received Ti-6Al-4V alloy,the microhardness of GAL processed kerf surface is increased to 382.8 HV accompanied by residual tensile stress,while the microhardness of WGL processed kerf surface is increased to 481.6 HV accompanying with residual compressive stress.In addition,the GAL processing increases the wear rate at room temperature but decreases the wear rate at high temperatures.Comparatively,the WGL processing decreases the wear rate at room and high temperatures,simultaneously.Such wear behaviors could be ascribed to their different superficial microstructures and phase constituents.Yang Chao Yuezhuan Liu Zifa Xu Weixin Xie Li Zhang Wentai Ouyang Haichen Wu Zebin Pan Junke Jiao Shujun Li Guangyi Zhang Wenwu Zhang Liyuan Sheng 2023Journal of Materials Science & Technology2023,,25:0
15Understanding the growth mechanisms of metal-based core–shell nanostructures revealed by in situ liquid cell transmission electron microscopy显示文摘Metal-based core-shell nanostructures have garnered enduring interest due to their unique properties and functionalities.However,their growth and transformation mechanisms in liquid media remain largely unknown because they lack direct observation of the dynamic growth process with high spatial and temporal resolution.Developing the in situ liquid cell transmission electron microscopy(TEM)technique offers unprecedented real-time imaging and spectroscopy capabilities to directly track the evolution of structural and chemical transformation of metal-based core–shell nanostructures in liquid media under their working condition.Here,this review highlights recent progress in utilizing in situ liquid cell TEM characterization technique in investigating the dynamic evolution of material structure and morphology of metal-based core–shell nanostructures at the nano/atomic scale in real-time.A brief introduction of the development of liquid cells for in situ TEM is first given.Subsequently,recent advances in in situ liquid cell TEM for the fundamental study of growth mechanisms of metal based core–shell nanostructures are discussed.Finally,the challenge and future developments of metalbased core–shell nanostructures for in situ liquid cell TEM are proposed.Our review is anticipated to inspire ongoing interest in revealing unseen growth dynamics of core–shell nanostructures by in situ liquid cell TEM technique.Junyu Zhang Bensheng Xiao Junhui Zhao Miao Li Haichen Lin Zewen Kang Xianwen Wu Haodong Liu Dong-Liang Peng Qiaobao Zhang 2022Journal of Energy Chemistry2022,31,8:0
16Effects of Pr-Cu-Ti intergranular addition on microstructure and magnetic properties of heavy-rare-earth-free Nd-Fe-B sintered magnets显示文摘By intergranular addition of Pr-Cu-Ti alloy powders in the Nd-Fe-B sintered magnets with the normal B component,we propose an approach to the optimization of grain boundary and local Nd-Fe-B composition system.The coercivity is enhanced from 1.42 to 1.86 T,while further addition leads to a reduction in remanence and coercivity.The analyses of phase composition reveal that Ti mainly exists in the form of metallic Ti alloy,and part of Ti combines with B to form the TiB2 phase after the liquid phase sintering process.This process results in a consumption of B in the local Nd-Fe-B composition system and a change of the grain boundary component,which contributes to the formation process of the RE_(6)(Fe,M)_(14) phase after the annealing process.Therefore,with the modification of grain boundary and composition system,the intergranular addition of Pr-Cu-Ti induces the generation of continuous thin grain boundary phases.It promotes the intergrain exchange decoupling,increasing the coercivity in the annealed magnet.While the excess addition results in the segregation of TiB_(2),as well as the precipitation of TiB_(2) into the Nd-Fe-B phase,which leads to structural defects.Thus,the further effort for the addition alloy with Ti to reduce the deterioration of the microstructure will lead to further improvement in magnetic properties.Jinhao Zhu Guangfei Ding Bo Zheng Haichen Wu Lei Jin Zhehuan Jin Shuai Guo Renjie Chen Aru Yan 2022Journal of Rare Earths2022,40,5:0
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