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STUDY ON HOT SAND COOLING EQUIPMENT WITH DAMPING SAND CASCADE AND VERTICAL SPOUTED-fLUIDIZED BED

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Acta Metallurgica Sinica(English Letters) 2005年第5期18卷 669-673页

作者： L. C. wang f. wang X.H. You Department of Material Science and Engineering Taiyuan University of Science and Technology Taiyuan 030024 China

A new kind of hot sand cooling equipment with vertical spouted-fluidized bed is developed in this paper. It is similar to the traditional horizontal vibrating fluidized boiling cooler in principle but different from it in structure. The processing principle of the cooler is analyzed. The influence of main structural and processing parameters on the cooling effect and its mechanism are researched. Other characteristics of the cooler are discussed also. Experiment results show that the cooling efficiency η is equal to or larger than 83%, the temperature of output sand is less than 40℃ with the temperature of input sand is about between 80 and 90℃, and the productivity is 5t/ （h·m）

关键词： hot sand cooling fluidized bed foundry equipment

Complement-dependent neuroinflammation in spinal cord injury:from pathology to therapeutic implications

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Neural Regeneration Research 2025年第5期20卷 1324-1335页

作者： Hassan Saad Bachar El Baba Ali Tfaily firas Kobeissy Juanmarco Gutierrez Gonzalez Daniel Refai Gerald R.Rodts Christian Mustroph David Gimbel Jonathan Grossberg Daniel L.Barrow Matthew f.Gary Ali M.Alawieh Department of Neurosurgery Emory University School of MedicineAtlantaGAUSA Department of Neurology Yale UniversityNew HavenCTUSA Center for Neurotrauma Multiomics&Biomarkers(CNMB)Morehouse School of MedicineAtlantaGAUSA

Spinal cord injury remains a major cause of disability in young adults,and beyond acute decompression and rehabilitation,there are no pharmacological treatments to limit the progression of injury and optimize recovery in this *** the thorough investigation of the complement system in triggering and propagating cerebral neuroinflammation,a similar role for complement in spinal neuroinflammation is a focus of ongoing *** this work,we survey the current literature investigating the role of complement in spinal cord injury including the sources of complement proteins,triggers of complement activation,and role of effector functions in the *** study relevant data demonstrating the different triggers of complement activation after spinal cord injury including direct binding to cellular debris,and or activation via antibody binding to damage-associated molecular *** effector functions of complement have been implicated in spinal cord injury,and we critically evaluate recent studies on the dual role of complement anaphylatoxins in spinal cord injury while emphasizing the lack of pathophysiological understanding of the role of opsonins in spinal cord *** this pathophysiological review,we systematically review the different translational approaches used in preclinical models of spinal cord injury and discuss the challenges for future translation into human *** review emphasizes the need for future studies to dissect the roles of different complement pathways in the pathology of spinal cord injury,to evaluate the phases of involvement of opsonins and anaphylatoxins,and to study the role of complement in white matter degeneration and regeneration using translational strategies to supplement genetic models.

关键词： complement neuroinflammation neuroplasticity regeneration spinal cord injury targeted therapy

Prognostic model for esophagogastric variceal rebleeding after endoscopic treatment in liver cirrhosis: A Chinese multicenter study

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World Journal of Gastroenterology 2025年第2期31卷 85-101页

作者： Jun-Yi Zhan Jie Chen Jin-Zhong Yu fei-Peng Xu fei-fei Xing De-Xin wang Ming-Yan Yang feng Xing Jian wang Yong-Ping Mu Cell Biology Laboratory Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Institute of Liver Diseases Shanghai Academy of Chinese MedicineShanghai 201203China Clinical Key Laboratory of Traditional Chinese Medicine of Shanghai Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Key Laboratory of Liver and Kidney Disease of the Ministry of Education Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Gastroenterology and Hepatology Zhongshan Hospital Affiliated to Fudan UniversityShanghai 200032China Shanghai Institute of Liver Disease Fudan UniversityShanghai 200032China Evidence-Based Medicine Center Fudan UniversityShanghai 200032China Department of Gastrointestinal Endoscopy Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Hepatology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China

BACKGROUND Rebleeding after recovery from esophagogastric variceal bleeding(EGVB)is a severe complication that is associated with high rates of both incidence and *** its clinical importance,recognized prognostic models that can effectively predict esophagogastric variceal rebleeding in patients with liver cirrhosis are *** To construct and externally validate a reliable prognostic model for predicting the occurrence of esophagogastric variceal *** This study included 477 EGVB patients across 2 cohorts:The derivation cohort(n=322)and the validation cohort(n=155).The primary outcome was rebleeding events within 1 *** least absolute shrinkage and selection operator was applied for predictor selection,and multivariate Cox regression analysis was used to construct the prognostic *** validation was performed with bootstrap *** assessed the discrimination,calibration and accuracy of the model,and performed patient risk *** Six predictors,including albumin and aspartate aminotransferase concentrations,white blood cell count,and the presence of ascites,portal vein thrombosis,and bleeding signs,were selected for the rebleeding event prediction following endoscopic treatment(REPET)*** predicting rebleeding within 1 year,the REPET model ex-hibited a concordance index of 0.775 and a Brier score of 0.143 in the derivation cohort,alongside 0.862 and 0.127 in the validation ***,the REPET model revealed a significant difference in rebleeding rates(Pfor variceal rebleeding with excellent predictive per-formance,which will improve the clinical management of rebleeding in EGVB patients.

关键词： Esophagogastric variceal bleeding Variceal rebleeding Liver cirrhosis Prognostic model Risk stratification Secondary prophylaxis

Redox catalysts for aprotic Li-O2 batteries: Toward a redox flow system

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Nano Materials Science 2019年第3期1卷 173-183页

作者： YunGuang Zhu f.W.Thomas Goh Qing wang Department of Materials Science and Engineering Faculty of Engineering National University of Singapore

Large-scale electrical energy storage with high energy density and round-trip efficiency is important to the resilience of power grids and the effective use of intermittent renewable energy such as solar and *** battery,due to its high energy density,is believed to be one of the most promising energy storage systems for the ***,large overpotentials,poor cycling stability,and degradation of electrolytes and cathodes have been hindering the development of lithium-oxygen *** heterogeneous oxygen electrocatalysts have been investigated to lower the overpotentials and enhance the cycling stability of lithium-oxygen ***,the prevailing issues of electrode passivation and clogging *** the past few years,redox mediators were explored as homogenous catalysts to address the issues,while only limited success has been achieved for these soluble *** conjunction with a flowing electrolyte system,a new redox flow lithium-oxygen battery(RfLOB)has been devised to tackle the aforementioned *** working mechanism and schematic processes will be elaborated in this *** addition,the performance gap of RfLOB with respect to practical requirements will be *** the above,we anticipate RfLOB would be a credible solution for the implementation of lithium-oxygen battery chemistry for the next generation energy storage.

关键词： Lithium-air battery Redox catalysis Oxygen reduction reaction Oxygen evolution reaction Redox flow cell

NUMERICAL MODELING Of SUSPENDED SEDIMENT TRANSPORT IN CHANNEL BENDS

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Journal of Hydrodynamics 2006年第4期18卷 411-417页

作者： HUANG Sui-liang JIAY．f,wang Sam S. Y. College of Environmental Science and Engineering Nankai University Tianjin 300071 China National Center for Computational Hydroscience and Engineering The University of Mississippi Oxford USA

An algorithm to compute three-dimensional sediment transport effect was proposed in this paper to enhance the capability of depth-averaged numerical models. This algorithm took into account of non-uniform distributions of flow velocities and suspended sediment concentrations along water depth, it significantly enhanced the applicability of 2D models in simulating open channel flows, especially in channel bends. Preliminary numerical experiments in a U-shaped and a sine-generated experimental channel indicate that the proposed method performs quite well in predicting the change of bed-deformation in channel bends due to suspended sediment transport. This method provides an effective alternative for the simulations of channel morphodynamic changes.

关键词： algorithm dispersion terms bends suspended sediment transport 2D numerical model

Mimicking aneurysm in a patient with chronic occlusion of the left middle cerebral artery

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World Journal of Clinical Cases 2025年第3期13卷 20-23页

作者： Xue-Jian wang Department of Neurosurgery Affiliated Hospital 2 of Nantong UniversityNantong 226000Jiangsu ProvinceChina

The chronic occlusion of intracranial arteries generally has no or mild clinical symptoms,and the clinical symptoms of acute cerebral artery occlusion are mostly manifested as severe cerebral infarction symptoms,which often make early diagnosis difficult,thus losing the best treatment *** cerebral infarction occurs,the consequences are difficult to *** is also an important reason for the high misdiagnosis rate and mortality of this *** this paper,the characteristics of the disease were analyzed to provide clinical reference.

关键词： Chronic occlusion Misdiagnose Arterial occlusion Middle cerebral artery occlusion Aneurysm

Visualizing hypoxic modulation of beta cell secretions via a sensor augmented oxygen gradient

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Microsystems & Nanoengineering 2023年第1期9卷 191-202页

作者： Kai Duan Mengyang Zhou Yong wang Jose Oberholzer Joe f.Lo Department of Mechanical Engineering Bioengineering ProgramUniversity of Michigan at DearbornDearbornMI48128USA Department of Surgery/Transplant University of VirginiaCharlottesvilleVA22908USA

One distinct advantage of microfluidic-based cell assays is their scalability for multiple concentrations or *** scaling can be extremely powerful when combining multiple parameters and ***,in situ stimulation and detection eliminates variability between individual ***,conventional microfluidics must combat diffusion,which limits the spatial distance and time for molecules traveling through ***,we leveraged a multilayered microfluidic approach to integrate a novel oxygen gradient(0–20%)with an enhanced hydrogel sensor to study pancreatic beta *** enabled our microfluidics to achieve spatiotemporal detection that is difficult to achieve with traditional *** this device,we demonstrated the in situ detection of calcium,insulin,and ATP(adenosine triphosphate)in response to glucose and oxygen ***,insulin was quantified at levels as low as 25 pg/mL using our imaging ***,by analyzing the spatial detection data dynamically over time,we uncovered a new relationship between oxygen and beta cell *** observed an optimum oxygen level between 10 and 12%,which is neither hypoxic nor normoxic in the conventional cell culture *** results provide evidence to support the current islet oscillator *** future applications,this spatial microfluidic technique can be adapted for discrete protein detection in a robust platform to study numerous oxygen-dependent tissue dysfunctions.

关键词： hypoxic stimulation gradient

friedrich Ackermann’s scientific research program

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Geo-Spatial Information Science 2023年第2期26卷 141-150页

作者： Wolfgang förstner Department of Photogrammetry UniversityBonnGermany

We sketch friedrich Ackermann’s research program following the concept of Imre Lakatos,with some historical key developments in the theory and application of aerotriangulation and image *** research program,with its core being statistical estimation theory,has decisively influenced photogrammetry since the 60s,is still fully alive,and a challenge for today’s methods of image *** describe(1)Lakatos’concept of a scientific research program,with its negative and positive heuristics and(2)Ackermann’s research program,clearly made explicit in his PhD,with its mathematical model,the ability to predict theoretical precision and reliability,the potential of analyzing rigorous and approximate method,and the role of *** development of aerotriangulation,later augmented by image matching techniques,is closely connected to Ackermann’s successful attempts to integrate basic research and practical applications.

关键词： friedrich Ackermann scientific research program aerotriangulation image matching role of theory and application

Opportunities and challenges of biodegradable Zn-based alloys

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Journal of Materials Science & Technology 2020年第11期42卷 136-138页

作者： H.f.Li Z.Z.Shi L.N.wang Beijing Advanced Innovation Center for Materials Genome Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China

following the footsteps of biodegradable Mg-based and fe-based alloys,biodegradable Zn-based alloy is a newcomer and rising star in the family of biodegradable metals and *** combined superior mechanical properties,appropriate degradation rates,excellent biocompatibility of biodegradable Zn-based alloys have brought worldwide research interest on the design,development and clinical translation of Zn-based *** present perspective has summarized opportunities and challenges in the development of biodegradable Zn-based alloys.

关键词： Biodegradable Zn-based alloys Clinical applications Mechanical properties Degradation behavior Biocompatibility Corrosion fatigue Bio-tribocorrosion