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Effects of the inlet particle spatial distribution on the performance of a gas-solid cyclone separator

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Particuology 2024年第2期85卷 133-145页

作者： yuge Yao Manxia Shang Xiwei Ke Zhong Huang Tuo Zhou Junfu Lyu Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Energy and Power EngineeringTsinghua UniversityBeijing100084China

The present study was aimed at the inlet particle spatial distribution of a gas-solid separator with high solid loading and investigated its effects on cyclone performance and the inner flow *** flow fields of a cyclone with different rectangular particle flow areas on the inlet surface were numerically simulated using a four-way coupling *** simulated results indicate that reducing the inlet particle flow area and lowing the inlet particle position can effectively reduce the scattered particles inside the cyclone separator and enhance the separation *** gathering the particles to the centerline can also weaken the particle *** particles near the roof account for the swirling particle ceiling *** inlet particle spatial distribution affects the pressure drop mainly by affecting the gas tangential velocity in the cylinder ***,compared to the hori-zontal particle distribution on the inlet surface,the vertical particle distribution has greater effects on cyclone performance.

关键词： Gas-solid cyclone Inlet particle spatial distribution Four-way coupling Separation efficiency Scattered particle

Numerical simulation of water-slag elbow erosion-inhibiting by regulating the slag injection position with a novel preceding rotating sheet structure

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Particuology 2024年第7期90卷 323-339页

作者： Fopeng Wen Liuyun Xu Yixiang Chen Zhaofu Deng Shen Zhang Wenming Song yuge Li Liping Wei School of Chemical Engineering Northwest UniversityXi’an710069China School of Chemistry and Chemical Engineering Yan'an UniversityYan'an716000China Machinery Industry Shanghai Lanya Petrochemical Equipment Inspection Institute Co. Ltd.Shanghai201518China The Research Center of Chemical Engineering Applying Technology for Resource of Shaanxi Xi’an710069China

The elbow erosion seriously jeopardizes the safe and stable operation of water–slag discharge pipeline of the coal gasification *** work simulated water–slag elbow characteristics with various slag injection positions by simulating five simplified and representative erosion categories,including A-type horizontal-vertical elbow with an upstream flow,B-type horizontal-vertical elbow with a downstream flow,C-type vertical-horizontal elbow with an upstream flow,D-type vertical-horizontal elbow with a downstream flow and E-type horizontal-horizontal *** with the C/D-type elbow,where particles were injected uniformly,the A-type elbow and E-type elbow were found to increase erosion rate,while the B-type elbow decreases erosion *** interesting discovery is that the elbow erosion rate is relatively low for small particles when particles are injected from the middle and bottom positions of the inlet section of the *** on the observation,a novel preceding rotating sheet structure was developed to regulate the particle injection *** shows an excellent anti-erosion performance by reducing the maximum erosion rate of particles with diameters of 50,100,and 200μm by 23%,35%,and 43%,respectively.

关键词： Erosion Slag-water Uneven particles Elbow pipe Erosion inhibition Preceding rotating sheet structure

Multi-prior physics-enhanced neural network enables pixel super-resolution and twin-imagefree phase retrieval from single-shot hologram

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Opto-Electronic Advances 2024年第9期7卷 22-38页

作者： Xuan Tian Runze Li Tong Peng yuge Xue Junwei Min Xing Li Chen Bai Baoli Yao State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China University of Chinese Academy of Sciences Beijing 100049China.

Digital in-line holographic microscopy(DIHM)is a widely used interference technique for real-time reconstruction of living cells’morphological information with large space-bandwidth product and compact ***,the need for a larger pixel size of detector to improve imaging photosensitivity,field-of-view,and signal-to-noise ratio often leads to the loss of sub-pixel information and limited pixel ***,the twin-image appearing in the reconstruction severely degrades the quality of the reconstructed *** deep learning(DL)approach has emerged as a powerful tool for phase retrieval in DIHM,effectively addressing these ***,most DL-based strategies are datadriven or end-to-end net approaches,suffering from excessive data dependency and limited generalization ***,a novel multi-prior physics-enhanced neural network with pixel super-resolution(MPPN-PSR)for phase retrieval of DIHM is *** encapsulates the physical model prior,sparsity prior and deep image prior in an untrained deep neural *** effectiveness and feasibility of MPPN-PSR are demonstrated by comparing it with other traditional and learning-based phase retrieval *** the capabilities of pixel super-resolution,twin-image elimination and high-throughput jointly from a single-shot intensity measurement,the proposed DIHM approach is expected to be widely adopted in biomedical workflow and industrial measurement.

关键词： optical microscopy quantitative phase imaging digital holographic microscopy deep learning super-resolution

Effect of purine diet on prognosis of deep brain stimulation for Parkinson's disease

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Food Science and Human Wellness 2024年

作者： Bowen Chang yuge Jiang Chuanxing Feng Bowen Li Jiaming Mei Chaoshi Niu Key Laboratory of Xin'an Medicine， Ministry of Education， Anhui Province Key Laboratory of R&D of Chinese Medicine， Anhui University of Chinese Medicine 3. Center for Food Nutrition and Functional Food Engineering， School of Food Science and Technology， Jiangnan University Department of Neurosurgery， The First Affiliated Hospital of USTC， Division of Life Sciences and Medicine， University of Science and Technology of China

Uric acid (UA) is a naturally antioxidant that is strongly associated with the development and progression of Parkinson’s disease (PD). The purine diet is an important exogenous pathway that modulates blood UA levels. Deep brain stimulation (DBS) is an important tool for PD treatment. This study aimed to explore the effects of preoperative purine diet on the prognosis of patients with PD after DBS. 64 patients with PD who underwent DBS were included in this study， and their clinical data， blood UA values， and daily purine intake. Patients were followed up for improvement 1 year after surgery. We found that patient higher purine intake was strongly associated with the rate of improvement after DBS and was a protective factor for patient prognosis. Daily purine intake from meat and seafood was significantly higher in the responsive patients than in the less-responsive patients. Mediation analysis showed that UA mediated 78% of the effect of purine intake on motor symptom improvement after DBS. In summary， we observed that purine intake is strongly associated with the rate of improvement in motor symptoms after STN-DBS in patients with PD. This study provides a reference for preoperative diet planning in patients with Parkinson’s disease undergoing DBS.

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Characteristic changes in astrocyte properties during astrocyte-to-neuron conversion induced by NeuroD1/Ascl1/Dlx2

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Neural Regeneration Research 2025年第6期20卷 1801-1815页

作者： Qing He Zhen Wang Yuchen Wang Mengjie Zhu Zhile Liang Kanghong Zhang yuge Xu Gong Chen GHM Institute of CNS Regeneration Jinan UniversityGuangzhouGuangdong ProvinceChina

Direct in vivo conversion of astrocytes into functional new neurons induced by neural transcription factors has been recognized as a potential new therapeutic intervention for neural injury and degenerative disorders. However, a few recent studies have claimed that neural transcription factors cannot convert astrocytes into neurons, attributing the converted neurons to pre-existing neurons mis-expressing transgenes. In this study, we overexpressed three distinct neural transcription factors––NeuroD1, Ascl1, and Dlx2––in reactive astrocytes in mouse cortices subjected to stab injury, resulting in a series of significant changes in astrocyte properties. Initially, the three neural transcription factors were exclusively expressed in the nuclei of astrocytes. Over time, however, these astrocytes gradually adopted neuronal morphology, and the neural transcription factors was gradually observed in the nuclei of neuron-like cells instead of astrocytes. Furthermore,we noted that transcription factor-infected astrocytes showed a progressive decrease in the expression of astrocytic markers AQP4(astrocyte endfeet signal), CX43(gap junction signal), and S100β. Importantly, none of these changes could be attributed to transgene leakage into preexisting neurons. Therefore, our findings suggest that neural transcription factors such as NeuroD1, Ascl1, and Dlx2 can effectively convert reactive astrocytes into neurons in the adult mammalian brain.

关键词： aquaporin-4 Ascl1 astrocyte cortex Dlx2 gap junction glia-to-neuron conversion neural regeneration NeuroD1 reprogramming

Improvement of glucose metabolism in middle-aged mice on a high-fat diet by whole-grain highland barley is related to low methionine levels

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Food Science and Human Wellness 2024年第5期13卷 2906-2916页

作者： Chuanxing Feng Yueting Ge Bowen Li Xiangrong Cheng Xue Tang Jianjin Zhu yuge Jiang Yonghui Shi Guowei Le Center for Food Nutrition and Functional Food Engineering School of Food Science and TechnologyJiangnan UniversityWuxi 214122China State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China College of Life Science xinyang Normal Universityxinyang 464000China Key Laboratory of xin'an Medicine Ministry of EducationAnhui Province Key Laboratory of R&D of Chinese MedicineAnhui University of Chinese MedicineHefei 230038China

Methionine restriction(MR)is an effective dietary strategy to regulate energy metabolism and alleviate oxidative stress and inflammation in the body,especially in the middle-aged and elderly ***,the high methionine content of meat products makes this dietary strategy impossible to combine with protein supplementation and *** barley(HB),a low-methionine cereal,not only provides the body with protein but also has improved glucose metabolism and antioxidant and anti-inflammatory ***,this study evaluated the feasibility of HB as a source of methionine-restricted dietary protein and the potential ***-aged C57BL/6J mice were fed a control diet(CON),a high-fat diet(HFD),a whole-grain HB high-fat diet(HBHF),or a HBHF+methionine diet(HBHFmet)for 25 *** results showed that the HBHF could keep the body weight,fasting glucose,insulin,homeostasis model assessment of insulin resistance(HOMA-IR),blood lipids,inflammation,and oxidative stress of HFD mice at normal *** with the HFD groups,HBHF inhibited pancreatic cell apoptosis and improved insulin secretion while improving hepatic and skeletal muscle glucose ***,these efficacies were attenuated in HBHFmet group *** findings suggest that HBHF has an MR strategy.

关键词： Methionine restriction strategy Highland barley Insulin secretion Glucose metabolism

Mass Transfer-Promoted Fe^(2+)/Fe^(3+)Circulation Steered by 3D Flow-Through Co-Catalyst System Toward Sustainable Advanced Oxidation Processes

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Engineering 2024年第5期36卷 264-275页

作者： Weiyang Lv Hao Li Jinhui Wang Lixin Wang Zenglong Wu yuge Wang Wenkai Song Wenkai Cheng Yuyuan Yao National Engineering Lab of Textile Fiber Materials and Processing Technology(Zhejiang) Zhejiang Sci-Tech UniversityHangzhou 310018China Zhejiang Provincial Innovation Center of Advanced Textile Technology Shaoxing 312000China Jiangsu Ruiya Stirring Technology Co. Ltd.Yixing 214200China

Realizing fast and continuous generation of reactive oxygen species(ROSs)via iron-based advanced oxidation processes(AOPs)is significant in the environmental and biological ***,current AOPs assisted by co-catalysts still suffer from the poor mass/electron transfer and non-durable promotion effect,giving rise to the sluggish Fe^(2+)/Fe^(3+)cycle and low dynamic concentration of Fe^(2+)for ROS ***,we present a three-dimensional(3D)macroscale co-catalyst functionalized with molybdenum disulfide(MoS_(2))to achieve ultra-efficient Fe^(2+)regeneration(equilibrium Fe^(2+)ratio of 82.4%)and remarkable stability(more than 20 cycles)via a circulating flow-through *** the conventional batch-type reactor,experiments and computational fluid dynamics simulations demonstrate that the optimal utilization of the 3D active area under the flow-through mode,initiated by the convectionenhanced mass/charge transfer for Fe^(2+)reduction and then strengthened by MoS_(2)-induced flow rotation for sufficient reactant mixing,is crucial for oxidant activation and subsequent ROS ***,the flow-through co-catalytic system with superwetting capabilities can even tackle the intricate oily wastewater stabilized by different surfactants without the loss of pollutant degradation *** findings highlight an innovative co-catalyst system design to expand the applicability of AOPs based technology,especially in large-scale complex wastewater treatment.

关键词： Advanced oxidation processes 3D co-catalyst Flow-through mode Enhanced mass transfer Complex wastewater treatment

文明交流互鉴观下德语专业基础阶段双向文化教学的行动研究——以促成环节为例

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外语教育研究前沿 2024年第3期7卷 10-17,93页

作者：梁玉阁江红同济大学合肥大学

为解决德语专业基础阶段教学中长期存在的“本土文化失语”问题,本研究在文明交流互鉴观的指导下,依托产出导向法的教学理念,在“综合德语”课程中实施了两轮行动研究,探究如何在促成环节将母语文化融入德语教学中,以实现双向文化教学... 详细信息

为解决德语专业基础阶段教学中长期存在的“本土文化失语”问题,本研究在文明交流互鉴观的指导下,依托产出导向法的教学理念,在“综合德语”课程中实施了两轮行动研究,探究如何在促成环节将母语文化融入德语教学中,以实现双向文化教学。经过数据三角验证发现,学生用德语言说中德文化的产出能力得到明显提高,他们对中德文化的理解更深刻,也增强了本土文化自觉与文化自信。因此,本文可为致力于在高等外语教育基础阶段开展双向文化教学的一线外语教师提供借鉴。

关键词：产出导向法促成环节德语专业双向文化教学行动研究

基于因子分析和熵权-TOPSIS法的我国医学类英文期刊综合评价体系研究

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中国科技期刊研究 2024年第8期35卷 1134-1143页

作者：刘宇舸丁佐奇中国药科大学国际医药商学院江苏省南京市210009 中国药科大学《中国天然药物》编辑部江苏省南京市210009

【目的】从多维指标角度对我国医学类英文期刊的综合影响力进行评价,为期刊评价体系的优化和发展提供新思路。【方法】以75种我国出版的医学类英文期刊为数据源,从学术影响力、期刊声誉、社会影响力3个维度共选择14个指标构建指标体系... 详细信息

【目的】从多维指标角度对我国医学类英文期刊的综合影响力进行评价,为期刊评价体系的优化和发展提供新思路。【方法】以75种我国出版的医学类英文期刊为数据源,从学术影响力、期刊声誉、社会影响力3个维度共选择14个指标构建指标体系。采用熵权法结合因子分析来计算各指标权重,并通过TOPSIS法计算各指标的综合得分。【结果】实证研究表明,学术影响力、期刊声誉和社会影响力3个维度互相促进。对科研成果的收藏、添加书签等交互行为比在社交媒体、新闻、博客等传播渠道的提及更能提升期刊的综合影响力。【结论】引入期刊声誉与社会影响力指标有助于综合反映期刊的多维影响力,在一定程度上全面体现期刊的发展情况。

关键词：科技评价 TOPSIS法期刊评价因子分析