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arXiv 2022年

作者： Qian, Chen Wang, Zi Zhang, Xinlin Shi, Boxuan Jiang, Boyu Tao, ran Li, Jing Ge, Yuwei Kang, Taishan Lin, Jianzhong Guo, di Qu, Xiaobo The Department of Electronic Science Biomedical Intelligent Cloud R&D Center Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance National Institute for Data Science in Health and Medicine Xiamen University China The United Imaging Healthcare Shanghai China Xingaoyi Medical Equipment Co. Ltd. Yuyao China Department of Radiology Zhongshan Hospital of Xiamen University School of Medicine Xiamen University Xiamen China The School of Computer and Information Engineering Xiamen University of Technology Xiamen China

Objective: Multi-shot interleaved echo planer imaging can obtain diffusion-weighted images (dWI) with high spatial resolution and low distortion, but suffers from ghost artifacts introduced by phase variations between shots. In this work, we aim at solving the challenging reconstructions under inter-shot motions between shots and a low signal-to-noise ratio. Methods: An explicit phase model with paired phase and magnitude priors is proposed to regularize the reconstruction (PAIr). The former prior is derived from the smoothness of the shot phase and enforced with low-rankness in the k-space domain. The latter explores similar edges among multi-b-value and multi-direction dWI with weighted total variation in the image domain. results: Extensive simulation and in vivo results show that PAIr can remove ghost artifacts very well under a high number of shots (8 shots) and significantly suppress the noise under the ultra-high b-value (4000 s/mm2). conclusion: The explicit phase model PAIr with complementary priors has a good performance on challenging reconstructions under inter-shot motions between shots and a low signal-to-noise ratio. Significance: PAIr has great potential in advanced clinical dWI applications and brain function research. copyright © 2022, The Authors. All rights reserved.

关键词： Clinical research

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High threshold voltage GaN HEMT with mixed conductive channel

High threshold voltage GaN HEMT with mixed conductive channe...

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International conference on (ICEPT) Electronic Packaging technology

作者： Wanjie Li Luqi Tao Liming Wang Xu Zhang Xiandong Li Xianping Chen School of Electrical Engineering Chongqing University Chongqing China Technology R&D Center China Resources Microelectronics (Chongqing) Co.Ltd Chongqing China College of Optoelectronic Engineering Chongqing University Chongqing China

ISBN: (数字)9781728168265

ISBN: (纸本)9781728168272

In recent years, wide-band-gap semiconductor materials silicon carbide (SiC) and gallium nitride (GaN) are receiving widespread attention because of their superior performance. In particular, GaN devices have been applied in the fields of low-voltage miniaturized power supplies and 5G communications. For GaN high electron mobility transistor (HEMT) devices used in miniaturized power supplies, the lower threshold voltage (V th ) is a problem that needs to be solved urgently. In this paper, the HEMT device having a novel mixed conducting channel. The device raises the threshold voltage to 3.21V while the saturation current capability still reached 0.46A/mm. As with conventional devices, the saturation current capability of the new device is affected by the Al composition of the barrier layer. But unlike conventional devices, the threshold voltage of the device can be adjusted by changing the doping concentration of the p-type doped layer within a certain range.

关键词： Gallium nitride Logic gates Threshold voltage doping HEMTs Aluminum gallium nitride Wide band gap semiconductors

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corrigendum to “Improvement of Ce–Nb doping on low-temperature catalytic activity of a VOx-based catalyst for NH 3 -SCr reaction” [Appl. Surf. Sci. 655 (2024) 159571]

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Applied Surface Science 2024年 662卷

作者： Min Gie Jung Hyo Jin An Jun Woo Jho Jung-Hyun Lee Heon Phil Ha Hwajun Lee dong Wook Kwon Extreme Materials Research Center Korea Institute of Science and Technology Seoul 02792 Republic of Korea Department of Chemical & Biological Engineering Korea University Seoul 02841 Republic of Korea R&D Support Group Central Research Center Hyundai Oilbank Co. Ltd. Yongin-si Gyeonggi-do 16891 Republic of Korea

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Surface color optimization of powder-based 3d objects based on impregnation process 35

Surface color optimization of powder-based 3D objects based ...

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35th International conference on digital Printing Technologies, NIP 2019

作者： Chen, Chen Wang, Xiaochun Guangxue, Chen Jiangping, Yuan YUTO R&D Institute Shenzhen YUTO Packaging Technology Co. Ltd. Shenzhen518108 China State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou510640 China

ISBN: (纸本)9780892083411

Poor surface color reproduction and incomplete color management system are the main impeding factors for the commercialization of full-color 3d printing. In this paper, the coloration mechanisms as well as characteristics of 3d surfaces were introduced, and a variety of impregnation methods suitable for powder-based 3d printing were integrated. The 24-color cards and four-primary cubes were printed by 3d Systems ProJet 860 Pro printer to compare single-plane and multi-plane optimization effects, choose the best impregnation process and put forward a guide to improve impregnants. The results revealed that the saturation of 3d printing surface color was greatly increased and the brightness was slightly decreased after impregnation process, which reduced chromatic aberration on single-plane or multi-plane. colorBond and transparent coating spray are the most suitable combination for powder-based 3d objects. Increasing the uniformity, transparency and permeability of coatings is beneficial to further optimize surface colors. © 2019 Society for Imaging Science and technology

关键词： color

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A Short-term Power Load Prediction Model Based on Morlet WNN

A Short-term Power Load Prediction Model Based on Morlet WNN

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IEEE International conference of Safety Produce Informatization (IICSPI)

作者： Aiqiang dong Zesan Liu Tingshun Li R&D Test Center China Power Information Technology Co. Ltd. Beijing China School of Control and Computer Engineering North China Electric Power University Beijing China

ISBN: (数字)9781728177380

ISBN: (纸本)9781728177397

Power load is the key to work of regional grid. The stability of the regional power grid will be improved if we can predict the power load in short term. So, this paper provides a new hybrid model to forecast electric power in short term based on generalized extremum learning machine (GELM) and Morlet wavelet neural net (WNN). Firstly, regarding power load probability as model output, this model will cut power load information into different parts according to frequency attributes using wavelet function, and then every part will be analyzed with similar scaler. Secondly, the WNN is trained quickly by the GELM. After randomly picking deviation between hidden layer and input coefficient, some output coefficient will be got by generalized inverse transformation of matrix. Then, after the displacement coefficient and scale coefficient of Morlet function being randomly selected, the hidden layer coefficients are gained with matrix inversion, and then the Morlet WNN is designed out. Finally, taking load data of some regional power grid as experimental data, the results show that the proposed model has high accuracy and reliability, which proves the high effectiveness of the algorithm.

关键词： Uncertainty Predictive models Tools Power grids data models reliability Load modeling

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control strategy and methods for continuous direct compression processes

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Asian Journal of Pharmaceutical Sciences 2021年第2期16卷 253-262页

作者： Yasuhiro Suzuki Hirokazu Sugiyama Manabu Kano ryutaro Shimono Gosuke Shimada ryoichi Furukawa Eichi Mano Keiichi Motoyama Tatsuo Koide Yasuhiro Matsui Kazuki Kurasaki Issei Takayama Shunin Hikage Noriko Katori Masahiko Kikuchi Hiroshi Sakai Yoshihiro Matsuda Formulation Technology Research Laboratories Daiichi Sankyo Co.Ltd.Kanagawa 254-0014Japan Department of Chemical System Engineering The University of TokyoTokyo 113-8656Japan Department of Systems Science Kyoto UniversityKyoto 606-8501Japan CMC Sciences Department Regulatory Affairs DivisionR&D DivisionJanssen Pharmaceutical K.K.Tokyo 101-0065Japan EuroTechno Ltd. Kanagawa 223-0057Japan Pharmaceutical Research Department Mitsubishi Tanabe Pharma CorporationOsaka 532-8505Japan Chemical Products CMC Regulatory Affairs Area Japan DevelopmentMSD K.K.Tokyo 102-8667Japan Graduate School of Pharmaceutical Sciences Kumamoto UniversityKumamoto 862-0973Japan Division of Drugs National Institute of Health SciencesKawasaki 210-9501Japan Technology Research&Development Sumitomo Dainippon Pharma Co.Ltd.Osaka 564-0053Japan Formulation Development Department Chugai pharmaceutical Co.Ltd.Tokyo 115-8543Japan Office of New Drug IV Pharmaceuticals and Medical Devices AgencyShin-Kasumigaseki Bldg.Tokyo 100-0013Japan Office of Generic Drugs Pharmaceuticals and Medical Devices AgencyShin-Kasumigaseki Bldg.Tokyo 100-0013Japan KOKANDO Co. Ltd.Toyama 930-8580Japan Pharmaceuticals and Medical Devices Agency Shin-Kasumigaseki Bldg.Tokyo 100-0013Japan

We presented a control strategy for tablet manufacturing processes based on continuous direct *** work was conducted by the experts of pharmaceutical companies,machine suppliers,academia,and regulatory authority in *** different items in the process,the component ratio and blended powder content were selected as the items requiring the control method specific to continuous manufacturing different from the conventional batch *** control and management of the Loss in Weight(LIW)feeder were deemed the most important,and the residence Time distribution(rTd)model were regarded effective for setting the control range and for controlling of the LIW *** on these ideas,the concept of process control using rTd was summarized.

关键词： continuous manufacturing Solid drug products Process control residence time distribution Loss in weight feeder regulatory science

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correction to: Atomic-Scale Analysis of Oxide Inclusion in Weld Metal Using Atom Probe Tomography

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Metallurgical and Materials Transactions A 2022年第5期53卷 1920-1920页

作者： Takahashi, Jun Kisaka, Yuji Kawakami, Kazuto Terasaki, Hidenori Advanced Technology Research Labs Nippon Steel Corporation Futtsu Japan Engineering R&D Institute Nippon Steel Engineering Co. Ltd. Kitakyusyu Japan Resource and Process Solution Dev. Nippon Steel Technology Co. Ltd. Futtsu Japan Faculty of Advanced Science and Technology Kumamoto University Kumamoto Japan

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The trajectory planning system for spraying robot based on k-means clustering and NUrBS curve optimization

The trajectory planning system for spraying robot based on k...

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Annual conference of Industrial Electronics Society

作者： Haichu Chen Chenglong Guo Zhifeng Wang Tao Wen Zhiming Zeng Zeqin Lin School of mechanical and electrical engineering Foshan University Foshan Guangdong China School of automation Foshan University Foshan Guangdong China Technology R&D Center Foshan designa technology co. LTD Foshan Guangdong China

ISBN: (数字)9781728154145

ISBN: (纸本)9781728154152

In the spraying industry, the trajectory planning is the core part of industrial robots because model variety and shape of work-piece surfaces become the core problem of trajectory generation. In order to quickly plan the spraying trajectory and process of industrial robots, this paper proposes a trajectory generation model based on k-means mean clustering and a fitting optimization method based on NUrBS curve. The model obtains point cloud data, classifies and iterates the curvature according to the curvature threshold, and then plans the trajectory of each region according to the height and Angle of the spray gun in the spraying experience base to obtain the regional spraying trajectory points. The NUrBS curve is used to optimize the trajectory. In addition, on the basis of the above, a method based on infrared imaging target detection technology is proposed to quickly identify the acquired trajectory information and convert it to the coordinate system suitable for spraying robot operation.

关键词： Trajectory Spraying Splines (mathematics) Surface topography Surface reconstruction Three-dimensional displays robot kinematics

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dissection analysis of coke consumption behavior and microstructural evolution in blast furnaces

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Fuel 2026年 403卷

作者： Shijin Chen Wei Wang Jie Wang Lingkun Chen Bin Wang Xuheng Chen Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and Technology Wuhan 430081 China School of Chemistry and Materials Science Hubei Engineering University Xiaogan 432000 China The R&D Center of Wuhan lron & Steel Co. LTD. Baosteel Central Research Institute Wuhan 430081 Hubei China

In the context of large-scale operation and low-coke-ratio smelting in blast furnaces, clarifying the consumption behavior of coke and its microstructural evolution within a blast furnace is highly important for achieving the efficient utilization of coke. This study investigated the structural evolution and consumption mechanisms of coke from the charging area to the tuyere region via a blast furnace dissection system. Findings revealed within the lump zone’s upper region, coke primarily undergoes mechanical wear, with no significant changes in composition or structure. In the lower part of the lump zone, coke begins to undergo gasification reactions, leading to a marked expansion in the number of micropores and a carbon loss of 12.39 %. In the cohesive zone, gasification reactions are catalyzed by alkali metals, and coke consumption accelerates, with carbon loss increasing to 38.95 %. The small and medium pores merge, and the proportion of large pores increases, accompanied by the formation and propagation of cracks. In the upper region of the tuyere, owing to the synergistic effects of gasification reactions, direct reduction, and high temperatures, the carbon loss of coke reaches 63.56 %. The carbon matrix is severely eroded, with significant pore interconnections, and the porosity increases to 70.03 %. concurrently, the coke’s optical texture index (OTI) demonstrates enhancement, evidenced by strengthened crystallographic alignment within its carbon matrix and elevated graphitic ordering.

关键词： coke Blast furnace dissection Carbon loss consumption behavior Microstructure

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Electric Field Enhanced with Cds/Zns Quantum dots Passivation for Efficient and Stable Perovskite Solar Cells

SSRN

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SSrN 2022年

作者： Li, cong Li, Huan Zhu, Zhinan Yin, Tong Wang, Zhenni Li, Peipei Zeng, Chengxin Yang, Fu Zhong, Peng Cui, Nuanyang Shou, Chunhui School of Advanced Materials and Nanotechnology Xidian University Xi’an710126 China Maritime Silkroad Knowledge Center China-Singapore Guangzhou Knowledge City Huangpu District Building B5 Guangzhou China Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Jiangsu Suzhou215123 China Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province Zhejiang Provincial Energy Group R&D Institute Co. Ltd. Hangzhou311121 China

The potential loss caused by defects is one of the most important factors affecting the performance of perovskite photovoltaic devices. CdS/ZnS quantum dots (Qds) have good hydrophobicity and can achieve the dual effects of waterproofing hydrophobic and defect passivation of perovskite films. The Lowest Unoccupied Molecular Orbital (LUMO) energy level of CdS/ZnS Qds doped perovskite film decreases from -3.75 eV to -3.85 eV. The barrier of photo-generated charge transport from the perovskite layer to the electron transport layer is significantly reduced, which is conducive to the enhancement of built-in potential. The density of trap states is reduced and the non-radiative recombination of carriers is suppressed. CdS/ZnS Qds doped perovskite film is dense and has a larger roughness, which helps to increase the contact area with the electron transport layer, thereby improving the charge transportation. Finally, the highest efficiency of the device with Qds reaches 21.42%, and the open-circuit voltage ( V oc ) and the short-circuit current density ( J sc ) are significantly increased compared with undoped ones. The hydrophobicity and stability of the device have also been improved. Therefore, the effect of CdS/ZnS Qds on passivation may provide new ideas for the efficient and stable perovskite solar cells. © 2022, The Authors. All rights reserved.

关键词： Cadmium sulfide

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