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Is it a normal phenomenon for pediatric patients to have brain leptomeningeal contrast enhancement on 3-tesla magnetic resonance imaging?

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World Journal of Radiology 2024年第5期16卷 136-138页

作者： Min Ai Hang-Hang Zhang Yi Guo jun-bang feng Department of Anesthesiology Nanan District People’s Hospital of ChongqingChongqing 400060China Department of Breast and Thyroid Surgery Chongqing Bishan District Maternal and Child Health Care HospitalChongqing 402760China Medical Imaging Department Chongqing University Central Hospital(Chongqing Emergency Medical Center)Chongqing 400014China

Determining whether sevoflurane sedation in children leads to“pseudo”prominent leptomeningeal contrast enhancement(pLMCE)on 3 Tesla magnetic resonance imaging will help reduce overdiagnosis by radiologists and clari... 详细信息

关键词： Pediatrics patients Sevoflurane Brain Prominent leptomeningeal contrast enhancement Magnetic resonance imaging

Constructing Pr-doped CoOOH catalytic sites for efficient electrooxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第1期100卷 234-244页

作者： Botao Fan Hao Zhang bang Gu feng Qiu Qiue Cao Wenhao Fang School of Chemical Science and Technology Yunnan University National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University

Electrocatalytic conversion of renewable biomass is emerging as a promising route for sustainable chemical production;hence it urgently calls for developing efficient electrocatalysts with low potentials and high current ***,a Pr-doped Co（OH）2hexagonal sheet （Pr/Co=1/9,in mole） is synthesized by electrodeposition as highly performant catalyst for 5-hydroxymethylfurfural （HMF） oxidation reaction（HMFOR） to produce 2,5-furandicarboxylic acid （FDCA）.This novel and low-cost catalyst possesses a rather low onset potential of 1.05 V （***） and requires only 1.10 V （***） to reach a current density of 10 mA cm-2for HMFOR,significantly outperforming Co（OH）2benchmark (i.e.,210 mV higher to reach10 m A cm-2).The origin of Pr promotion effect as well as the evolution of CoOOH catalytic sites and HMFOR process has been deeply elucidated by physical characterizations,kinetic experiments,in situ electrochemical techniques,and theoretical *** unique Pr-ameliorated CoOOH active centers enable 100%conversion of HMF,99.6%selectivity of FDCA,and 99.7%Faraday efficiency,with a superior cycling durability toward *** can be one of the most outstanding results for Co-based HMFOR catalysts to date in the *** this work can help open up new horizons for constructing novel and efficient Co-based electrocatalysts by the utilization of lanthanide elements.

关键词： Bioconversion

Optimizing clinical decision-making for ruptured intracranial aneurysms:Current applications and future directions of computed tomography angiography

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World Journal of Radiology 2024年第11期16卷 700-702页

作者： Xing-Yan Le Jin-Rui Zhang jun-bang feng Chuan-Ming Li Department of Medical Imaging Chongqing Emergency Medical CenterChongqing University Central HospitalSchool of MedicineChongqing UniversityChongqing 400014China

Ruptured intracranial aneurysms(RIAs)are a leading cause of subarachnoid haemorrhage(SAH)and are associated with a poor prognosis and high mortality *** tomography angiography(CTA)is the preferred imaging moda-lity for the diagnosis of RIAs,as it is considered to be a fast,economical,and less invasive *** this letter,regarding an original study presented by Elmo-kadem et al,we present our insights and discuss how CTA can better assist in clinical decision-making for patients with RIAs complicated by SAH.

关键词： Computed tomography angiography Ruptured intracranial aneurysms Subarachnoid haemorrhage Intracranial haemorrhage Angiography

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煤炭产业链链内协作与链际演化的内生性研究

中国矿业大学学报 2012年第6期41卷 978-983页

作者：王帮俊吉峰中国矿业大学管理学院江苏徐州221116

运用演化博弈分析方法,从煤炭产业链的链内节点企业间的协作关系出发,分析了煤炭产业链内企业独自决策和形成产业链后利润总值的变化;研究了煤炭产业链的内部以及相关产业链链际之间的演化机理,并如何逐步内化为煤炭产业链构建和演化的... 详细信息

运用演化博弈分析方法,从煤炭产业链的链内节点企业间的协作关系出发,分析了煤炭产业链内企业独自决策和形成产业链后利润总值的变化;研究了煤炭产业链的内部以及相关产业链链际之间的演化机理,并如何逐步内化为煤炭产业链构建和演化的动力.结果表明:煤炭产业链内节点企业之间通过协作可以更好地发挥规模效应优势,节约交易成本,提高经济效益;产业链链际演化虽然存在演化路径的差异性,但存在共同的演化方向,最终达到稳定的收敛点,并且演化后整体上的规模和数量都超越了原有产业链的规模,这将为煤炭产业链的构建和延伸起到决策支持作用.

关键词：煤炭产业链链内协作链际演化内生性

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Medical imaging for the diagnosis,recurrence and metastasis evaluation of clear cell sarcoma

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World Journal of Clinical Cases 2024年第29期12卷 6258-6261页

作者： Wen-Jing Wang Xia Wang Dong-Ming Hui jun-bang feng Chuan-Ming Li Department of Medical Imaging Chongqing University Central HospitalChongqing 400014China Department of Radiology Chongqing Western HospitalChongqing 400050China

Clear cell sarcoma(CCS)of soft tissue is extremely rare,accounting for approximately 1%of all soft tissue *** is very difficult to diagnose CCS based on clinical *** resonance imaging(MRI)provides highresolution images of soft tissues and pathological features such as mucus,necrosis,bleeding,and fat through high and low signals on T1 weighted image(T1WI)and T2 weighted image(T2WI).On the other hand,the paramagnetism of melanin in CCS shortens the relaxation time of T1 and T2,and high signal intensity on T1WI and low signal intensity on T2WI can be *** is different from most other soft tissue *** present,the treatment method for CCS is surgical *** can effectively display the tumour edge,extent of surrounding oedema,and extent of fat involvement,which is highly important for guiding surgical resection and predicting postoperative *** an invasive sarcoma,CCS has a high risk of *** of the pathological condition of the resected tumour,MRI or computed tomography(CT)should be performed every 1-2 years to assess recurrence at the primary site and to screen for metastasis in the lungs,liver,and *** necessary,PET-CT can be performed to evaluate the overall condition of the patient.

关键词： Clear cell sarcoma Recurrence Metastasis Computed tomography Magnetic resonance imaging Editorial

Relationship between pancreatic morphological changes and diabetes in autoimmune pancreatitis:Multimodal medical imaging assessment has important potential

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World Journal of Radiology 2024年第11期16卷 703-707页

作者： Qing-Biao Zhang Dan Liu jun-bang feng Chun-Qi Du Chuan-Ming Li Department of Medical Imaging Chongqing Emergency Medical CenterChongqing University Central HospitalSchool of MedicineChongqing UniversityChongqing 400014China Department of Cardiology Chongqing Traditional Chinese Medicine HospitalChongqing 400000China

Autoimmune pancreatitis(AIP)is a special type of chronic pancreatitis with cli-nical symptoms of obstructive jaundice and abdominal discomfort;this condition is caused by autoimmunity and marked by pancreatic fibrosis and *** studies have revealed a close relationship between early pancreatic atrophy and the incidence rate of diabetes in type 1 AIP patients receiving steroid *** et al performed a long-term follow-up study and reported that the pancreatic volume(PV)of these patients initially exponentially decreased but then slowly decreased,which was considered to be an important factor related to diabetes;moreover,serum IgG4 levels were positively correlated with PV during *** this letter,regarding the original study presented by Shimada et al,we present our insights and discuss how multimodal medical imaging and arti-ficial intelligence can be used to better assess the relationship between pancreatic morphological changes and diabetes in patients with AIP.

关键词： Autoimmune pancreatitis Diabetes Pancreatic morphological changes Multimodal medical imaging Artificial intelligence

Effect of order–disorder transition on thermodynamic and electronic properties of σ and χ phases in W–Re alloy: the first-principles calculation

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Tungsten 2025年第1期7卷 195-213页

作者： Zhi-Peng Zhu Dian Jia William Yi Wang jun-Lei Yin Xing-Yu Gao Shu-feng Yang Hai-feng Song Jin-Shan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical University Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

The Tungsten-Rhenium(W-Re) alloys,celebrated for their high melting point,strength at elevated temperatures,electrical resistivity,and radiation resistance,have been widely utilized in high-temperature components,aerospace,electronics,and nuclear *** constituents of the topologically close-packed(TCP) phases,the sigma phase(σ) and chi phase(χ) formed within W-Re alloys wield considerable influence on the mechanical properties and the stability of the *** calculations were utilized in the present work to explore the structural,thermodynamic,and electronic properties of both ordered and disordered configurations within the σ and χ phases,culminating in a systematic elucidation of the higher phase stability exhibited by the ordered *** is found that the bulk modulus of these two phases is directly proportional to the concentration of Re in the alloy,while the equilibrium volume is inversely *** thermodynamic parameters of the σ and χ phases are calculated via the mean-field potential *** similar trends observed in the isobaric heat capacity,enthalpy increment,and entropy change curves for these two phases suggest they possess comparable thermodynamic *** is noteworthy that the contribution of ionic vibrations predominantly affects the isobaric heat capacity,while the contribution of thermal electronic excitations increases linearly with *** the structure and thermodynamic properties of TCP phases in W-Re alloys at low temperatures has profound significance for optimizing material performance,microstructures features,establishing theoretical foundations,and predicting material behavior.

关键词： First-principles calculations Phase stability TCP phases Thermodynamic properties W–Re alloy

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong Tang Nan Zheng Qingming Lin Yan You Zheng Gong Yangping Zhuang Jiali Wu Yu Wang Hanlin Huang jun Ke feng Chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species

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Engineering N3C vacancies in hierarchical porous carbon nitride nanosheets for room temperature ultradeep photocatalytic aerobic oxidative desulfurization

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Science China Chemistry 2025年

作者： Yina Nie Weijie Yang Xin Wang Xiang Li Lele Wei Xiaolin Bai Lin Liu feng Fu jun Wan College of Chemistry & Chemical Engineering Research Institute of Comprehensive Energy Industrial Technology Shaanxi Key Laboratory of Chemical Reaction Engineering Yan'an University Anhui Engineering Research Center of Carbon Neutrality College of Chemistry and Materials Science Anhui Normal University

The production of ultra-low sulfur clean fuels holds global significance for improving energy efficiency and reducing environmental pollution. Photocatalytic aerobic oxidative desulfurization（PODS） offers an attractive approach to efficiently remove refractory heterocyclic aromatic sulfur compounds under mild conditions. However, the sluggish charge dynamics,insufficient molecule activation, and slow mass transfer within photocatalysts restrict the overall desulfurization efficiency,hindering the widespread application of this technology. Herein, we developed a defective g-C3N4（M1U3CN） photocatalyst with bridged N3Cvacancies and hierarchical porous structures to address these limitations. This catalyst not only demonstrates outstanding dibenzothiophene（DBT） removal efficiency of 99.6% for model oil with high conversion and selectivity but also achieves complete sulfur removal from gasoline as well as 96.7% sulfur removal for distilled diesel at room temperature,successfully achieving ultradeep aerobic oxidative desulfurization. The introduction of rich N3Cvacancies and abundant micromeso-macroporous distribution in M1U3CN enhances kinetic efficiencies by promoting charge carrier separation, mass transfer,and molecular activation simultaneously; resulting in exceptional PODS performance. This work provides a collaborative strategy to overcome kinetic challenges in aerobic oxidative desulfurization via defect and structural engineering of the catalyst.

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