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Effect of TiO2 on reduction behavior of Cr2O3 in CaO-SiO2-Al2O3-MgO-TiO2-Cr2O3 by carbon from Fe-C melt

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Journal of Iron and Steel Research International 2020年第10期27卷 1145-1152页

作者： jun-yi xiang Gui-shang Pei Wei Lv Bao-hua Li Gui-bao Qiu Xue-wei Lv College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials Chongqing UniversityChongqing 400044China

The chromium-bearing titanomagnetite ore will turn to be the important raw material for blast furnace process in Panxi area,*** reduction behavior of Cr2O3 between CaO-SiO2-Al2O3-TiO2-Cr2O3 and Fe-C systems was *** effect of TiO2 content in the slag system on the reduction of Cr2O3,TiO2,and SiO2 and the con sumption of C in hot metal was investigated by both theoretical calculation and physical *** theoretical calculation results reveal that higher reduction temperature promotes the reduction of Cr and Ti,while high basicity and TiO2 content have little influence on the reduction of chromium but significantly influence the reduction of *** smelting reduction experiment results show that the content of Cr in hot metal significantly in creases with extendi ng the reduction time and decreases with the increase in TiO2 ***,the content of Ti in hot metal significantly increases as the TiO2 increases,reaching 0.073,0.085,0.107,and 0.121 wt.%for 5,10,15,and 20 wt.%of TiO2 input,*** studies proved that the reduction of Cr2O3 was a first-order *** addition of TiO2 inhibited the reduction of Cr2O3 and resulted in the decrease in reaction rate constant.

关键词： Smelting reduction Titanomagnetite Blast furnace slag Chromium oxide Titanium oxide

Synthesis of vanadium powder by magnesiothermic reduction of V_(2)O_(3)in a reactive molten salt

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Journal of Iron and Steel Research International 2023年第4期30卷 650-659页

作者： Da-peng Zhong Gui-shang Pei Jia-long Kang jun-yi xiang Cheng Pan Wu-an Gu Xue-wei Lv Lan-jie Li Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China Pangang Group Research Institute Co. Ltd.Panzhihua 617000SichuanChina College of Chemical Engineering Sichuan UniversityChengdu 610065SichuanChina The State Key Laboratory of Mechanical Transmissions Chongqing UniversityChongqing 400044China Chengde Iron and Steel Group Co. Ltd.HBIS Group Co.Ltd.Chengde 067102HebeiChina

As an important strategic metal,vanadium is generally used to prepare special steels,titanium alloys,and hydrogen storage materials.A new method of producing vanadium(metal)powder from V_(2)O_(3)using block Mg is presented *** an auxiliary molten salt,V_(2)O_(3)was successfully transformed into V by Mg *** by-product,MgO,was transformed into MgCl_(2)by adding ZrCl_(4),which prevented the generation of MgV_(2)O_(4)and allowed the reaction to proceed *** rod-like alloy phases,Zr_(0.03)V_(1.97),which formed in the presence of excess Mg,may hinder the diffusion of oxygen from the *** recovery rate of vanadium after separation and purification was approximately 45%–50%,where the main loss occurred during ball *** the optimal conditions(Mg content of 48.3%,reduction time of 1.5 h,and temperature of 850℃),the purity of vanadium exceeded 99 wt.%,and the O content decreased to 0.34 wt.%.

关键词： Deoxidation Vanadium powder Magnesiothermic reduction Molten salt

Cervical spondylotic myelopathy with syringomyelia presenting as hip Charcot neuroarthropathy:A case report and review of literature

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World Journal of Clinical Cases 2022年第3期10卷 1077-1085页

作者： Yu Lu jun-yi xiang Cheng-Yu Shi Ju-Bao Li Hai-Chao Gu Chang Liu Guo-Yu Ye Department of Orthopedics Yunnan Provincial Hospital of Traditional Chinese MedicineKunming 650000Yunnan ProvinceChina Department of Management and Economics Kunming University of Science and TechnologyKunming 650000Yunnan ProvinceChina Department of Sleep Center The First People's Hospital of Yunnan ProvinceKunming 650000Yunnan ProvinceChina

BACKGROUND Charcot neuroarthropathy(CN)is a systemic disease characterized by progressive bone loss and destruction,which is usually closely related to diabetes,HIV,***,CN caused by syringomyelia accounts for only 5%of CN cases;the shoulder and elbow are most often involved,and the hip joint is rarely *** a rare factor,cervical spondylotic myelopathy(CSM)can be associated with syringomyelia,which is scarcely reported in the ***,we present the first case report to date of CN of the hip caused by syringomyelia secondary to *** SUMMARY We describe a 76-year-old male patient who was diagnosed with CSM due to neck pain and weakness of limbs 16 years *** years ago,he noticed recurrent swelling of the right hip with pain and was diagnosed with degenerative ***,however,his symptoms gradually worsened,and because of progressive pain,destabilization and weakness of the right hip,he was admitted to our *** systematic physical,radiographic and laboratory examinations,we finally reached a diagnosis:CN of the right hip associated with syringomyelia secondary to *** comprehensive evaluation of the patient's condition,we performed right total hip *** the follow-up,the patient felt well clinically and could walk independently with a knee *** We suggest a possible etiological association between CSM and syringomyelia,which may reflect a potential pathogenesis of *** encourage clinicians to actively carry out a detailed medical history and comprehensive physical and imaging examinations in patients with joint lesions,especially chronic shoulder neck pain,to rule out the possibility of this association,which plays a crucial role in the early diagnosis of *** may no longer be an absolute contraindication to surgical treatment of *** selection of the surgical strategy can markedly improve the clinical symptoms and quality of life of patients.

关键词： Cervical spondylotic myelopathy Syringomyelia Hip Charcot neuroarthropathy Case report

Recovery of vanadium from vanadium slag by composite additive roasting-acid leaching process

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Journal of Iron and Steel Research International 2023年第7期30卷 1426-1439页

作者： jun-yi xiang Ming-shuai Luo Xi Lu Lu-wei Bai Zhong-peng Zhu Qing-yun Huang Sheng-qin Zhang Kun-peng Guo Xue-wei Lv College of Metallurgy and Materials Engineering Chongqing University of Science and TechnologyChongqing 401331China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China

To minimize the vanadium content in the vanadium extraction tailings, composite additive roasting with (CaO + MgO) and subsequent acid leaching process was carried out dealing with vanadium-bearing converter slag. The effect of additive with different MgO/(CaO + MgO) molar ratios on the roasting and leaching behaviours of vanadium slag was investigated, and the optimum process conditions were obtained. The results show that in the roasting experiment, under the conditions of roasting temperature of 850 ℃ and roasting time of 2 h, the main kinds of vanadate transformed from Ca_(2)V_(2)O_(7) to Ca_(5)Mg_(4)V_(6)O_(2)4 and then to Mg_(2)V_(2)O_(7) with the increase in the MgO/(CaO + MgO) molar ratio. In the leaching experiment, under the conditions of particle size less than 75 μm, leaching temperature of 50 ℃, pH of 2.5, liquid–solid ratio of 20:1, and MgO/(CaO + MgO) molar ratio of 1:3, the leaching efficiency of vanadium is increased by about 5%, but the substitution of MgO for most or all of CaO will significantly reduce the leaching efficiency of vanadium. Furthermore, the leaching efficiency of impurities (P and Cr) can also be decreased by a composite addictive (CaO + MgO) roasting process. The X-ray diffraction, scanning electron microscopy, energy dispersive spectrometry, and X-ray photoelectron spectroscopy of the original vanadium slag and solid products of both roasting and leaching processes were also evaluated.

关键词： Vanadium slag Roasting Leaching Vanadate Recovery

Recovery of vanadium from vanadium slag by composite roasting with CaO/MgO and leaching

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Transactions of Nonferrous Metals Society of China 2020年第11期30卷 3114-3123页

作者： jun-yi xiang Xin WANG Gui-shang PEI Qing-yun HUANG Xue-wei LÜ College of Materials Science and Engineering Chongqing UniversityChongqing 400044China College of Metallurgy and Materials Engineering Chongqing University of Science and TechnologyChongqing 401331China Chongqing Key Laboratory of Vanadium−Titanium Metallurgy and Advanced Materials Chongqing UniversityChongqing 400044China

A novel process of composite roasting with CaO/MgO and subsequent acid leaching was proposed to improve the recovery rate of vanadium from Linz–Donawiz(LD)converter vanadium *** effects of the MgO/(CaO+MgO)molar ratio and the roasting and leaching parameters on the recovery of vanadium were *** results showed that the leaching efficiency of vanadium decreased from 88%to 81%when CaO was replaced completely by MgO;however,it could be improved by roasting with the composite of CaO/*** maximum vanadium leaching efficiency of 94%was achieved under the optimum MgO/(CaO+MgO)mole ratio of 0.5:*** results from X-ray diffractometry(XRD)and scanning electron microscopy with energy-dispersive X-ray spectroscopy(SEM−EDS)confirm that the formation rate of acid-soluble vanadates can be enhanced during roasting with the composite of CaO/MgO and that the leaching kinetics can be accelerated owing to the suppression of calcium sulfate precipitation.

关键词： vanadium vanadium slag roasting acid leaching recovery

Gut microbiota in cancer initiation,development and therapy

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Science China Life Sciences 2025年

作者： Ruyi Zhang xiang Zhang Harry Cheuk Hay Lau jun Yu Institute of Digestive Disease and Department of Medicine and Therapeutics State Key Laboratory of Digestive DiseaseLi Ka Shing Institute of Health SciencesCUHK Shenzhen Research InstituteThe Chinese University of Hong Kong

Cancer has long been associated with genetic and environmental factors,but recent studies reveal the important role of gut microbiota in its initiation and *** 13%of cancers are linked to infectious agents,highlighting the need to identify the specific microorganisms *** microbiota can either promote or inhibit cancer growth by influencing oncogenic signaling pathways and altering immune *** can lead to cancer,while certain probiotics and their metabolites may help reestablish microecological balance and improve anti-tumor immune *** into targeted approaches that enhance therapy with probiotics is ***,the effects of probiotics in humans are complex and not yet fully ***,methods to counteract harmful bacteria are still in *** clinical trials also indicate that modifying gut microbiota may help manage side effects of cancer *** research is crucial to understand better how gut microbiota can be used to improve cancer prevention and treatment outcomes.

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成分配料算法的研究与实现

四川大学学报（自然科学版） 2002年第2期39卷 225-227页

作者：黄宁张俊范轶翔四川原子核科学技术研究所成都610064

作者以水泥生产生料配料为例 ,报道了一种成分配料的新模型及其方法 ,该法具有快速、准确 ,目标可以浮动 ,可行解丰富 ,可选择优化解和易扩展的优点 ,并已用于生产实际。

关键词：成分配料算法水泥生料配料三率值浮动目标硅酸盐工业原料配比化学组成

余热余压回收解决方案之ORC螺杆式膨胀发电机组

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制冷与空调 2017年第6期17卷 89-92页

作者：李军梅毅高翔武汉新世界制冷工业有限公司

余热余压回收是我国现阶段节能减排的重点方向,本文从工业化生产的角度介绍ORC螺杆式膨胀发电机组,并通过试验数据以及工程应用案例运行情况,对ORC螺杆式膨胀发电机组的优缺点进行总结。

关键词：余热回收 ORC 螺杆式膨胀机螺杆式压缩机

Infiltration by monocytes of the central nervous system and its role in multiple sclerosis: reflections on therapeutic strategies

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Neural Regeneration Research 2025年第3期20卷 779-793页

作者： Guangyong Zhang Qing Yao Chubing Long Pengcheng yi Jiali Song Luojia Wu Wei Wan Xiuqin Rao Yue Lin Gen Wei jun ying Fuzhou Hua Department of Anesthesiology the Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina Key Laboratory of Anesthesiology of Jiangxi Province NanchangJiangxi ProvinceChina

Mononuclear macrophage infiltration in the central nervous system is a prominent feature of neuroinflammation. Recent studies on the pathogenesis and progression of multiple sclerosis have highlighted the multiple roles of mononuclear macrophages in the neuroinflammatory process. Monocytes play a significant role in neuroinflammation, and managing neuroinflammation by manipulating peripheral monocytes stands out as an effective strategy for the treatment of multiple sclerosis, leading to improved patient outcomes. This review outlines the steps involved in the entry of myeloid monocytes into the central nervous system that are targets for effective intervention: the activation of bone marrow hematopoiesis, migration of monocytes in the blood, and penetration of the blood–brain barrier by monocytes. Finally, we summarize the different monocyte subpopulations and their effects on the central nervous system based on phenotypic differences. As activated microglia resemble monocyte-derived macrophages, it is important to accurately identify the role of monocyte-derived macrophages in disease. Depending on the roles played by monocyte-derived macrophages at different stages of the disease, several of these processes can be interrupted to limit neuroinflammation and improve patient prognosis. Here, we discuss possible strategies to target monocytes in neurological diseases, focusing on three key aspects of monocyte infiltration into the central nervous system, to provide new ideas for the treatment of neurodegenerative diseases.

关键词： blood–brain barrier macrophages monocytes multiple sclerosis neuroinflammation review therapy