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| 1 | Chemical deactivation of V2Os-WO3/Ti02 SCR catalyst by combined effect of potassium and chloride显示文摘 | Xiaodong WU Wenchao YU Zhichun SI Duan WENG | 2013 | Frontiers of Environmental Science & Engineering2013,7,3: | 9 |
| 2 | Structuring Nonlinear Wavefront Emitted from Monolayer Transition-Metal Dichalcogenides显示文摘The growing demand for tailored nonlinearity calls for a structure with unusual phase discontinuity that allows the realization of nonlinear optical chirality,holographic imaging,and nonlinear wavefront control.Transition-metal dichalcogenide(TMDC)monolayers offer giant optical nonlinearity within a few-angstrom thickness,but limitations in optical absorption and domain size impose restriction on wavefront control of nonlinear emissions using classical light sources.In contrast,noble metal-based plasmonic nanosieves support giant field enhancements and precise nonlinear phase control,with hundred-nanometer pixellevel resolution;however,they suffer from intrinsically weak nonlinear susceptibility.Here,we report a multifunctional nonlinear interface by integrating TMDC monolayers with plasmonic nanosieves,yielding drastically different nonlinear functionalities that cannot be accessed by either constituent.Such a hybrid nonlinear interface allows second-harmonic(SH)orbital angular momentum(OAM)generation,beam steering,versatile polarization control,and holograms,with an effective SH nonlinearityχ^((2))of~25 nm/V.This designer platform synergizes the TMDC monolayer and plasmonic nanosieves to empower tunable geometric phases and large field enhancement,paving the way toward multifunctional and ultracompact nonlinear optical devices. | Xuanmiao Hong Guangwei Hu Wenchao Zhao Kai Wang Shang Sun Rui Zhu Jing Wu Weiwei Liu Kian Ping Loh Andrew Thye Shen Wee Bing Wang Andrea Alù Cheng-Wei Qiu Peixiang Lu | 2020 | Research2020,,1: | 5 |
| 3 | Synthesis of fullerene-itaconic acid copolymer nanoball and its lubrication properties study显示文摘A novel Fullerene-ltaconic acid copolymer is synthesized via radical polymerization. It issoluble in polar solvents such as water, methanol, acetone and tetrahydrofuran etc.. The molecularstructure is identified and characterized by FTIR, UV-Vis and GPC. TEM analyses shows that itpresents an ideal spherical shape in water with an average diameter of about 48nm. Four-balltests show that the addition of a certain concentration of the Fullerene copolymer to the base stockcan effectively raise the load-carrying capacity (P_B Value) and the antiwear ability. JSM-35C modelscanning electron microscope (SEM) is used to examine the morphologies of the worn surfaces,which show that the additive results in a smaller wear scar diameter and a more shallow weargrooving. | GUAN Wenchao SHEN Chunying WU Chunwei Department of Chemistry, Huazhong University of Science and Technoloy, Wuhan 430074, China | 2001 | Science China Mathematics2001,44,S1: | 4 |
| 4 | Influence of boron contents on properties of AlMgB films prepared by RF magnetron sputtering显示文摘Ternary AlMgB thin films were synthesized on silicon (100) substrate at 573 K by radio frequency (RF) magnetron sputtering method using one Al/Mg co-target and one boron target. The thickness of the as-deposited thin film was controlled to 500 nm by adjusting deposition time. The influences of sputtering powers on the elemental contents and structural and mechanical properties were investigated by electron probe microanalysis (EPMA), X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), and nanoindentation system. At the same time, the ball-on-disk tribometer was used to measure the friction behavior of the films. Experimental results indicate that the as-deposited boron-rich films are primarily amorphous structure and possess a dramatic high hardness up to 39 GPa with 99.03 at.% boron. Obviously, it has exceeded the hardness value of 32 GPa of pure AlMgB 14 bulk material prepared by sintering method. Furthermore, the friction coefficients of the thin films exhibit an average value as low as 0.3, which is considered as the effect of self-lubricating. | Qu, Wenchao Wu, Aimin Wu, Zhanling Bai, Yizhen Jiang, Xin | 2012 | Rare Metals2012,31,2: | 3 |
| 5 | Fabrication and its characteristics of hard coating Ti-Al-N system prepared by DC magnetron sputtering显示文摘Pseudobinary Ti 1 x Al x N films were synthesized on Si (100) wafer by DC magnetron sputtering method using Ti 1 x Al x alloy targets with different Al contents. The composition of the Ti 1 x Al x N films was determined by electron probe microanalysis (EPMA). Structural characteristic was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM). First principles virtual crystal calculations for the Ti 1 x Al x N disordered alloys were used for the XRD simulations. The crystalline structure of the Ti 0.61 Al 0.39 N film was found to be a metastable single phase with NaCl (B1) structure. Its lattice constant, determined by XRD, was less than that of pure TiN. With the increase of Al content, the lattice constant of B1 phase was continually decreased, while würtzite (B4) structure was observed in the Ti 0.40 Al 0.60 N film. When x reached 0.75, the B1 phase disappeared, and only B4 phase was remained. The critical Al content for the phase transition from NaCl to würtzite structure in this paper was about 0.60, which could be explained by both the thermodynamic model and the electron theory. As-deposited Ti 1 x Al x N films exhibited excellent mechanical properties. Hardness measurements of Ti 1 x Al x N films showed a high value of 45GPa for x=0.39 and was decreased to value of 27 GPa with increasing Al at x=0.60. | Zhou, Xuyang Wu, Aimin Qu, Wenchao Jiang, Xin | 2012 | Rare Metals2012,31,2: | 3 |
| 6 | A cynomolgus monkey with naturally occurring Parkinson’s disease显示文摘Evidence for the existence of monkeys with spontaneous Parkinson’s disease(PD)has been lacking.Here,we screened macaque colonies at the Kunming Primate Research Center(Association for Assessment and Accreditation of Laboratory Animal Care(AAALAC)accredited),Kunming Institute of Zoology,Chinese Academy of Sciences,which has a large population of monkeys(>2400),to identify naturally occurring PD monkeys. | Hao Li Ling-Yan Su Lixin Yang Min Li Qianjin Liu Zhenhui Li Yan Hu Hongwei Li Shihao Wu Wenchao Wang Yingzhou Hu Zhengbo Wang Joshua DRizak Baihui Huang Min Xu Jing Wu Long-Bao Lv Christoph W.Turck Yong Yin Yong-Gang Yao Bing Su Xintian Hu | 2021 | National Science Review2021,8,3: | 3 |
| 7 | Triassic integrative stratigraphy and timescale of China显示文摘The Triassic rocks are widespread in China, and both marine and terrestrial strata are well developed. The Triassic stratigraphic architecture of China is very complex in both spatial variation of the so-called 'South Marine and North Continental', i.e. the southern areas of China occupied mostly by marine facies while the northern China by terrestrial facies during the Triassic Period, and temporal transition of the 'Lower Marine and Upper Continental', i.e. the lower part of the Triassic System composed mainly of marine facies and the upper part of terrestrial strata especially in South China. Although the Global Stratotype Section and Point(GSSP) of the Permian-Triassic boundary is located in South China, the Triassic of China except for some marine Lower-Middle Triassic depositions shows significantly local characteristics and is hardly correlated with the global chronostratigraphic chart. Consequently, the Triassic of China contains not only the international research hotspots but also difficult points in stratigraphic study. This paper aims to present a brief review of the Triassic in China, including chronostratigraphy, biostratigraphy, magnetostratigraphy and chemostratigraphy, and summarize an integrated Triassic stratigraphic framework of China. Accordingly, a stratigraphic correlation is proposed for the lithostratigraphic sequences among the three tectono-paleogeographic stratigraphic regions. The comprehensive study indicates that ammonoids are the classic index fossils in Triassic biostratigraphy but conodonts are more advantageous in the study and definition of the Triassic chronostratigraphic boundaries. China still has the potential to optimize the GSSPs of the Induan-Olenekian boundary and Olenekian-Anisian boundary. The correlation of the Permian-Triassic boundary between marine and terrestrial facies might be achieved with the help of the Permian-Triassic 'transitional bed' and its related biotic and environmental events in association with the biostratigraphic study of conchostracan, vertebrate and plant fossils. In addition, the carbon isotopes have been proved to be one of the powerful methods in marine Triassic stratigraphic study, whereas the oxygen and strontium isotopes may be additional important bridges to establish the correlation between the marine and terrestrial strata, but as yet lacking of relevant studies in terrestrial strata. Considering the most stratigraphic intervals of the Triassic and the terrestrial Triassic in China are difficult to be correlated to the global chart, the proposed Chinese(regional) Triassic chronostratigraphic chart of marine and terrestrial stages would be of importance to the study of Chinese Triassic stratigraphy and related aspects, but the stages must be conceptually in line with international standards and studied as soon as possible in order to finalize the definition. | Jinnan TONG Daoliang CHU Lei LIANG Wenchao SHU Haijun SONG Ting SONG Huyue SONG Yuyang WU | 2019 | Science China Earth Sciences2019,62,1: | 2 |
| 8 | Co-editing PINK1 and DJ-1 Genes Via Adeno-Associated Virus-Delivered CRISPR/Cas9 System in Adult Monkey Brain Elicits Classical Parkinsonian Phenotype显示文摘Whether direct manipulation of Parkinson’s disease(PD)risk genes in the adult monkey brain can elicit a Parkinsonian phenotype remains an unsolved issue.Here,we used an adeno-associated virus serotype 9(AAV9)-delivered CRISPR/Cas9 system to directly co-edit PINK1 and DJ-1 genes in the substantia nigras(SNs)of two monkey groups:an old group and a middle-aged group.After the operation,the old group exhibited all the classic PD symptoms,including bradykinesia,tremor,and postural instability,accompanied by key pathological hallmarks of PD,such as severe nigral dopaminergic neuron loss(>64%)and evidentα-synuclein pathology in the gene-edited SN.In contrast,the phenotype of their middle-aged counterparts,which also showed clear PD symptoms and pathological hallmarks,were less severe.In addition to the higher final total PD scores and more severe pathological changes,the old group were also more susceptible to gene editing by showing a faster process of PD progression.These results suggested that both genetic and aging factors played important roles in the development of PD in the monkeys.Taken together,this system can effectively develop a large number of genetically-edited PD monkeys in a short time(6–10 months),and thus provides a practical transgenic monkey model for future PD studies. | Hao Li Shihao Wu Xia Ma Xiao Li Tianlin Cheng Zhifang Chen Jing Wu Longbao Lv Ling Li Liqi Xu Wenchao Wang Yingzhou Hu Haisong Jiang Yong Yin Zilong Qiu Xintian Hu | 2021 | Neuroscience Bulletin2021,37,9: | 2 |
| 9 | FGF-receptor substrate 2 functions as a molecular sensor ntegrating external regulatory signals into the FGF pathway显示文摘(FRS2 ) 成纤维细胞生长因素(FGF ) 受体底层 2 是在 FGF 小径发信号的主要调停人。最近的研究在 FRS2 显示出那激活 mitogen 的蛋白质 kinase (MAPK ) phosphorylates 丝氨酸和 threonine 残余,否定地影响 FRS2 的导致 FGF 的酷氨酸 phosphorylation (PY ) 。几种刺激能导致 FRS2 的 serine/threonine phosphorylation (PS/T ) ,显示 FRS2 可能为学习在表明小径的生长因素之间的串音是有用的。这里,我们报导 FRS2 的导致 FGF 的 PY 能被 EGF 合作刺激在 PC12 房间稀释;这禁止的效果能被 U0126 完全颠倒, MEK 的一个禁止者。我们进一步在 FRS2 识别了 ERK1/2-binding 主题并且在 FGF 或 EGF 刺激之上产生了 FRS2-3KL,变异的缺乏 MAPK 绑定和磅。不同野类型(WT ) FRS2, FRS2-3KL 的导致 FGF 的 PY 不能被 EGF 合作刺激,和更展出的 FRS2-3KL-expressing PC12 房间禁止响应 FGF 处理比 FRS2-WT-expressing 房间区分潜力。这些结果建议 FRS2 的 PS/T 由 FRS2-MAPK 否定规章的循环调停了可以作为从另外的小径把否定规章的信号集成到产生 FGFR 的信号 transduction 的一个分子的开关工作。 | Wenchao Zhou Xiujing Feng Yingjie Wu Johannes Benge Zhe Zhang Zhengjun Chen | 2009 | Cell Research2009,19,10: | 2 |
| 10 | Human bone marrow mesenchymal stem cell‐derived hepatocytes express tissue inhibitor of metalloproteinases 4 and follistatin显示文摘 | Jiaojiao Xin Wenchao Ding Shaorui Hao Longyan Jiang Qian Zhou Tianzhou Wu Dongyan Shi Hongcui Cao Lanjuan Li Jun Li | 2015 | Liver Int2015,,10: | 1 |
| 11 | Helium and argon isotope geochemistry of alkaline intrusion-Associated gold and copper deposits along the Red River-Jinshajiang fault belt,SW China显示文摘 | Burnard P G Bi Xianwu Zhou Meifu Peng Jiantang Su Wenchao Wu Kaixing | 2004 | Chemical Geology2004,203,: | 1 |
| 12 | Influences of impregnation procedure on the SCR activity and alkali resistance of V,05-W03/TiO, catalyst显示文摘 | Yu Wenchao Wu Xiaodong Si Zhichun Weng Duan | 2013 | Applied Surface Science2013,283,: | 1 |
| 13 | High-quality 2-μm Q-switched pulsed solid-state lasers using spin-coating-coreduction approach synthesized Bi_2Te_3 topological insulators显示文摘In this paper, the fabrication process and characterization of Bi_2Te_3 topological insulators(TIs) synthesized by the spin-coating-coreduction approach(SCCA) is reported. With this approach, high-uniformity nano-crystalline TI saturable absorbers(TISAs) with large-area uniformity and controllable thickness are prepared. By employing these prepared TIs with different thicknesses as SAs in 2-μm solid-state Q-switched lasers, thickness-dependent output powers and pulse durations of the laser pulses are obtained, and the result also exhibits stability and reliability. The shortest pulse duration is as short as 233 ns, and the corresponding clock amplitude jitter is around 2.1%, which is the shortest pulse duration in Tl SA-based Q-switched 2-μm lasers to the best of our knowledge.Moreover, in comparison with the TISA synthesized by the ultrasound-assisted liquid phase exfoliation(UALPE)method, the experimental results show that lasers with SCCA synthesized TISAs have higher output powers, shorter pulse durations, and higher pulse peak powers. Our work suggests that the SCCA synthesized TISAs could be used as potential SAs in pulsed lasers. | JUNPENG QIAO SHENGZHI ZHAO KEJIAN YANG WEI-HENG SONG WENCHAO QIAO CHUNG-LUNG WU JIA ZHAO GUIQIU LI DECHUN LI TAO LI HONG LIU CHAO-KUEI LEE | 2018 | Photonics Research2018,6,4: | 1 |
| 14 | Freeze-drying and hot-pressing strategy to embed two-dimensional Ti_(0.87)O_(2) monolayers in commercial polypropylene films with enhanced dielectric properties显示文摘The dielectric capacitor has been widely used in advanced electronic and electrical power systems due to its capability of ultrafast charging–discharging and ultrahigh power density.Nevertheless,its energy density is still limited by the low dielectric constant(≈2.2)of the commercial dielectric polypropylene(PP).The conventional enhancement strategy by embedding inorganic fillers in PP matrix is still difficult and challenging due to that PP hardly dissolves in any inorganic/organic solvent.In this work,we develop a new strategy including freeze-drying,surface functionalization,and hot-pressing to incorporate Ti_(0.87)O_(2) monolayers in PP film.A series of uniform composited Ti_(0.87)O_(2)@PP film has been successfully fabricated with Ti0.87O2 content range of 0–15 wt%.The maximum dielectric constant of the as-prepared Ti_(0.87)O_(2)@PP film is 3.27 when the Ti_(0.87)O_(2) content is 9 wt%,which is about 1.5 times higher than that of pure PP.Our study provides a feasible strategy to embed two-dimensional material into commercial PP thin-film with superior dielectric performance for practical application. | Wenchao Tian Fei Yan Cailing Cai Zeyi Wu Chenchen Zhang Ting Yin Sijia Lao Linfeng Hu | 2021 | Journal of Advanced Ceramics2021,10,2: | 1 |
| 15 | Design of Permanent Ma- gnet Brushless DC Motor Control System Based on DSP- IC30Fg012显示文摘 | WU Qingqing TIAN Wenchao | 2012 | Procedia Engineering2012,29,3: | 1 |
| 16 | Facile synthesis of ultrafine Cu 2 ZnSnS 4 nanocrystals by hydrothermal method for use in solar cells显示文摘 | Wenchao Liu Binglei Guo Cheeleung Mak Aidong Li Xiaoshan Wu Fengming Zhang | 2012 | Thin Solid Films2012,,: | 1 |
| 17 | Central sensibility of human cases with different body mass during oral glucose tolerance test using functional magnetic resonance imaging显示文摘BACKGROUND: Because of the limitation of technique, there are few researches on regulating function o central hypothalamus by metabolism, especially the researches on real-time function. OBJECTIVE: To evaluate the response of hypothalamus to oral glucose tolerance test (OGTT) in differen body-weighted subjects by using functional magnetic resonance imaging (fMRI) so as to investigate th relationship between the sensitivity of hypothalamus in glycoregulation and disturbance of carbohydrat metabolism. DESIGN: Paired design. SETTING: Department of Radiology and Beijing Geriatrics Institute, Beijing Hospital, National Publi Health Bureau. PARTICIPANTS: A total of twenty healthy volunteers were selected from Beijing Geriatrics Institute National Public Health Bureau, including 10 subjects with obesity (5 males and 5 females; body mass > 28.0 kg/m2) and 10 subjects with normal body mass (5 males and 5 females; body mass from 18.5 to 23.9 kg/m2). All subjects gave written informed consent before participating in the study. METHODS: fMRI study was performed on GE 1.5 T Signa Twinspeed Infinity with Excite. Each voluntee was ingested of glucose during the fMRI scan. T2* images were acquired using a single-shot gradient echo (EPI) technique. The parameters of EPI included: TR 3 000 ms, TE 40 ms, Flip angle 90°, field of view (FOV) 24 cm × 24 cm, thickness 5 mm, gap 0 mm, matrix 64 × 64, number of excitation 1. All 10 subjects with normal body mass underwent a repeat fMRI scan after consuming an equivalent amount o water without glucose on a separate day. The procedure for the fMRI scan with water intake was the same a for glucose ingestion. fMRI data were processed with Intensity Averaging Method. MAIN OUTCOME MEASURES: The central response of hypothalamus and feedback orientation during OGTT in different body-weighted subjects. RESULTS: An acute transient decrease of fMRI intensity in posterior inferior and anterior inferior o hypothalamus was observed in all subjects within 2 minutes after oral glucose intake. This decrease wa followed by a recovery to the baseline. However, obese subjects had a delayed intensity decrease [(1.96± 1.06) minutes vs. (1.04±0.71) minutes, t =2.14, P < 0.05] and longer recovery time [(26.62±7.35 minutes vs. (16.29±6.42) minutes, t =3.67, P < 0.01] as compared with normal body-weight subjects Furthermore, decreased fMRI intensity was significant different from baseline intensity [(5.7±2.5)% vs (14.3±5.5)%, t =2.56, P < 0.05] in obese subjects, but not in normal body-weight subjects. The area o hypothalamus in normal body-weight volunteers demonstrated no significant signal change before and afte oral water ingestion (P > 0.05). CONCLUSION: Hypothalamus response to glucose loading is different in normal body-weighted and obes subjects. This suggests that fMRI is a useful tool to evaluate the central regulation of glucose metabolism. | Min Chen Yunting Zhang Tiemei Zhang Cheng Zhou Xiaomeng Wu Kui Cai Zhenghan Yang Wenchao Wang Weifeng Zhao Saying Li Zhi Wang Guozhen Li | 2007 | Neural Regeneration Research2007,2,9: | 1 |
| 18 | A Formal Specification of Mobile Trusted Computing显示文摘 | HUANG Wenchao XIONG Yan CHENG Wenjuan WU Chengyi CHEN Depin | 2011 | Chinese Journal of Electronics2011,20,1: | 1 |
| 19 | Elimination and fate of selected micro-organic pollutants in a full-scale anaerobic/ anoxic/aerobic process combined with membrane bioreactor for municipal wastewater reclamation显示文摘 | Xue Wenchao Wu Chunying Xiao Kang | | 0,,20: | 1 |
| 20 | Evaluation, simulation, and optimization of land use spatial patterns for high-quality development: A case study of Zhengzhou city, China显示文摘High-intensity land use and resource overloaded-induced regional land use spatial pattern(LUSP)are essential and challenging for high-quality development.The empirical studies have shown that a scientific land uses spatial layout,and the supporting system should be based on a historical perspective and require better considering the double influence between the current characteristics and future dynamics.This study proposes a comprehensive framework that integrates the resource environment carrying capacity(RECC)and land use change(LUC)to investigate strategies for optimizing the spatial pattern of land use for high-quality development.China’s Zhengzhou city was the subject of a case study whose datasets include remote sensing,spatial monitoring,statistics,and open sources.Three significant results emerged from the analysis:(1)The RECC has significant spatial differentiation but does not follow a specific spatial law,and regions with relatively perfect ecosystems may not necessarily have better RECC.(2)From 2020 to 2030,the construction land and farmland will fluctuate wildly,with the former increasing by 346.21 km^(2) and the latter decreasing by 295.98 km^(2).(3)The study area is divided into five zones,including resource conservation,ecological carrying,living core,suitable construction,and grain supply zones,and each one has its LUSP optimization orientation.This uneven distribution of RECC reflects functional defects in the development and utilization of LUSP.In addition,the increase in construction land and the sharp decline of farmland pose potential threats to the sustainable development of the study area.Hence,these two elements cannot be ignored in the future high-quality development process.The findings indicate that the LUSP optimization based on dual dimensions of RECC and LUC is more realistic than a single-dimension solution,exhibiting the LUSP optimization’s effectiveness and applicability. | ZHU Wenchao JIANG Zhimeng CEN Luyu WU Hao | 2023 | Journal of Geographical Sciences2023,33,2: | 1 |