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Pleural empyema with endobronchial mass due to Rhodococcus equi infection after renal transplantation: A case report and review of literature

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World Journal of Clinical Cases 2024年第1期12卷 224-231页

作者： guo-fu liang Sheng Chao Zhou Sun Ke-Jing Zhu Qian Chen Lei Jia Yu-Lin Niu Department of Organ Transplantation School of Clinical MedicineGuizhou Medical UniversityGuiyang 550025Guizhou ProvinceChina Department of Organ Transplantation The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550000Guizhou ProvinceChina

BACKGROUND Kidney transplantation is the best option for patients with end-stage renal ***,the need for lifelong immunosuppression results in renal transplant recipients being susceptible to various *** equi(***)is a rare opportunistic pathogen in humans,and there are limited reports of infection with *** in post-renal transplant recipients and no uniform standard of *** article reports on the diagnosis and treatment of a renal transplant recipient infected with *** 21 mo postoperatively and summarizes the charac-teristics of infection with *** after renal transplantation,along with a detailed review of the ***,we present the case of a 25-year-old man who was infected with *** 21 mo after renal *** the clinical features at the time of presentation were not specific,chest computed tomography(CT)showed a large volume of pus in the right thoracic cavity and right middle lung atelectasis,and fiberoptic bronchoscopy showed an endobronchial mass in the right middle and lower lobe *** culture and metagenomic next-generation sequen-cing sequencing of the pus were suggestive of *** *** immunosup-pressive drugs were immediately suspended and intravenous vancomycin and azithromycin were administered,along with adequate drainage of the *** endobronchial mass was then *** the patient’s clinical symptoms and chest CT presentation resolved,he was switched to intravenous ciprofloxacin and azithromycin,followed by oral ciprofloxacin and *** patient was re-hospitalized 2 wk after discharge for recurrence of *** *** recovered after another round of adequate abscess drainage and intravenous ciprofloxacin and *** Infection with *** in renal transplant recipients is rare and complex,and the clinical presentation lacks *** antibiotic therapy is required,and adequate abscess drainage and s

关键词： Kidney transplantation Rhodococcus equi Pleural empyema Pulmonary atelectasis Immunosuppression Case report

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碳纤拉挤板用夹层织物研究

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山东工业技术 2024年第2期 65-69页

作者：杨吉颖陈煌黄明富付国良冯学斌株洲时代新材料科技股份有限公司湖南株洲412000

随着风电叶片长度实现百米级的跨越,承载能力更为优异的碳纤维拉挤板也正在逐步应用。夹层导流织物作为拉挤板应用中不可缺少的关键材料,其和拉挤板材的适配性和经济性都至关重要。目前行业内关于碳纤维拉挤板适用的夹层导流织物的选择... 详细信息

随着风电叶片长度实现百米级的跨越,承载能力更为优异的碳纤维拉挤板也正在逐步应用。夹层导流织物作为拉挤板应用中不可缺少的关键材料,其和拉挤板材的适配性和经济性都至关重要。目前行业内关于碳纤维拉挤板适用的夹层导流织物的选择却没有系统性的研究。本文以三种导流织物:碳纤维(CF)夹层织物、碳/玻璃纤维混合(GF/CF)夹层织物、玻璃纤维(GF)夹层织物为研究对象,采用对比实验研究分析了相同面密度(200 g/m^(2))下三种夹层导流织物的本体力学性能、与碳纤维拉挤板结合性能、导流效率、电学性之间的差异。期望通过本文的研究对风电叶片材料体系升级过程中更为科学地选用材料提供指导和技术支持。

关键词：夹层导流织物碳纤维拉挤板材风电叶片

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风电叶片用聚氨酯树脂匹配性能研究

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胶体与聚合物 2024年第2期42卷 72-74页

作者：喻雄黄逸舟陈煌黄明富付国良冯学斌株洲时代新材料科技股份有限公司湖南株洲412000

为了探究聚氨酯树脂在风电叶片上工程化应用的可能性,本文对比研究了聚氨酯树脂与环氧树脂、油漆、夹芯泡沫材料、环氧结构胶之间的匹配性。结果表明:聚氨酯与环氧树脂之间具有优良的界面性能;风电常用油漆与聚氨酯复材间的界面性能较好... 详细信息

为了探究聚氨酯树脂在风电叶片上工程化应用的可能性,本文对比研究了聚氨酯树脂与环氧树脂、油漆、夹芯泡沫材料、环氧结构胶之间的匹配性。结果表明:聚氨酯与环氧树脂之间具有优良的界面性能;风电常用油漆与聚氨酯复材间的界面性能较好;balsa木、PET、PVC三种夹芯泡沫材料与聚氨酯复合材料之间的界面性能优良;聚氨酯复材与环氧结构胶之间匹配性较好。

关键词：聚氨酯风电叶片力学性能

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可回收热固性环氧树脂及其玻纤增强复合材料性能研究

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胶体与聚合物 2024年第1期42卷 7-10页

作者：杜雷黄逸舟陈煌黄明富喻雄王靖付国良株洲时代新材料科技股份有限公司湖南株洲412000

为了研究可回收环氧树脂R与风电叶片中常规环氧灌注树脂的区别,采用真空灌注工艺制备了玻璃纤维增强可回收热固性复合材料,对比分析了树脂之间的材料性能以及其复合材料之间的力学性能。结果表明,可回收树脂R的粘度与常规灌注树脂相近,... 详细信息

为了研究可回收环氧树脂R与风电叶片中常规环氧灌注树脂的区别,采用真空灌注工艺制备了玻璃纤维增强可回收热固性复合材料,对比分析了树脂之间的材料性能以及其复合材料之间的力学性能。结果表明,可回收树脂R的粘度与常规灌注树脂相近,适用期长于常规灌注树脂,适用于风电叶片的真空灌注工艺;放热峰出现时间略早于常规灌注树脂,有利于减少生产工时;其本体性能、复合材料力学性能与常规灌注树脂大体相当;可回收树脂R与常规灌注树脂的之间具有良好的界面性能,表明该树脂可以通过先制备部件然后整体灌注成型的方式制造大型复合材料制件。

关键词：可回收树脂热固性复合材料力学性能风电叶片

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阻抗不匹配对乘用车EMC传导发射测试结果的影响评估

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环境技术 2024年第6期42卷 91-98页

作者：何德业杨培洲郭锦添孙志颖黄友林付国良广州汽车集团股份有限公司汽车工程研究院广州510000 威凯检测技术有限公司广州510000

在按GB/T 40428标准进行车辆沿AC电源线的射频传导发射测试时,根据GB/T 6113.402标准给出的影响电源端传导发射测试结果不确定度的因素包括接收机的读数变化,人工电源网络与接收机之间线缆的衰减,人工电源网络的电压分压系数,接收机的修... 详细信息

在按GB/T 40428标准进行车辆沿AC电源线的射频传导发射测试时,根据GB/T 6113.402标准给出的影响电源端传导发射测试结果不确定度的因素包括接收机的读数变化,人工电源网络与接收机之间线缆的衰减,人工电源网络的电压分压系数,接收机的修正,人工电源网络电压分压系数频率内插,人工电源网络与接收机之间阻抗的失配,人工电源网络的阻抗不理想,电源骚扰影响和环境影响等。本文主要研究人工电源网络与接收机之间阻抗失配对车辆沿AC电源线的射频传导发射测试的结果影响。研究表明人工电源网络与接收机之间阻抗失配会对车辆沿AC电源线的射频传导发射测试结果造成很大影响,为提高测试结果的准确性,推荐在人工电源网络与接收机之间增加50 Ω阻抗匹配网络。

关键词：阻抗不匹配电磁兼容车辆电源端口传导发射

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Forming process chain for manufacturing complex conical-section profiled rings:On a co-design method

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Chinese Journal of Aeronautics 2024年第6期37卷 485-503页

作者： Lei liang Chaojiang ZOU lianggang guo State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Guizhou Aviation Technology Development Co.Ltd Guiyang 550081China

The final quality of complex conical-section rings depends on co-design of multiple processes in forming process *** this study,for a complex aeroengine casing ring with a large slope and a flange on its end,a co-design method of the forming process chain is put forward towards the objective of precision forming,which not only proposes a standard process route composed of multiple processes of upsetting,punching,rectangular ring rolling,loose tooling forging and profiled ring rolling,but also presents co-design methods of dies and blanks for all the *** profiled ring rolling,a design method of preformed blank that makes the blank and the target conical-section ring have the same axial volume distribution is *** the method,the axial metal redistribution during the process can be alleviated greatly thus improving the forming stability and precision of the *** on the geometric features of designed preformed blank,design methods of blanks and dies for loose tolling forging,rectangular ring rolling,punching and upsetting are proposed *** view of the key roles of loose tooling forging(manufacturing the preformed blank)and profiled ring rolling on the final quality of the conical ring parts,inherited FE simulations for these two processes are performed to verify the proposed design methods and determine appropriate design *** is demonstrated that the proposed design method has significant advantages in improving forming ***,a suggestive value 1.5 of the rolling ratio for profiled ring rolling(a key design parameter)is given based on comprehensive consideration of multiple indicators such as ring roundness,deformation uniformity and forming *** corresponding industrial experiments performed illustrate that a high forming precision of the conical-section aeroengine casing ring is achieved.

关键词： Complex conical-section ring Co-design of forming process chain Profiled ringrolling Preformed blank Loose tooling forging

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Recent progress of cobalt-based electrocatalysts for water splitting: Electron modulation, surface reconstitution, and applications

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Nano Research 2024年第4期17卷 2234-2269页

作者： Zhijian liang Di Shen Lei Wang Honggang fu Key Laboratory of functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080China

Electrocatalytic water splitting is an essential and effective means to produce green hydrogen energy structures,so it is necessary to develop non-precious metal catalysts to replace precious ***-based catalysts present effective alternatives due to the diverse valence states,adjustable electronic structures,and plentiful *** this review,the catalytic mechanisms of hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)for electrocatalytic water splitting are ***,the synthesis strategies of various cobalt-based catalysts are systematically summarized,followed by the relationships between the structure and performance ***,the effects of d-band center and spin regulation for cobalt-based catalysts are also ***,the dynamic electronic and structural devolution of cobalt-based catalysts are elucidated by combining a series of in-situ ***,we highlight the challenges and future developed directions of cobalt-based catalysts for electrocatalytic water splitting.

关键词： cobalt-based electrocatalysts water splitting electron modulation surface reconfiguration

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Evolution of copper species during heat treatment and its effect on CO oxidation reaction on CuCeZrO_(y) catalyst synthesized by a facile solvent-free route

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Journal of Rare Earths 2024年第4期42卷 660-667页

作者： Guangying fu Dongsen Mao Jun Yu Qiangsheng guo School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai21418 China The ZeoMat Group Qingdao Institute of Bioenergy and Bioprocess TechnologyCASQingdao26611China

Several ternary oxides CuCeZrO_(y)(CCZ)were synthesized by a facile grinding method followed by calcination at high temperatures,and used as catalysts for CO oxidation at low *** influences of calcination temperature(400-600℃)on the physicochemical properties of the assynthesized ternary oxides were investigated by thermogravimetric analysis/differential scanning calorimetry(TGA/DSC),X-ray diffraction(XRD),transmission electron microscopy(TEM),Raman,inductively coupled plasma-optical emission spectrometry(ICP-OES),N_(2) adsorption,H_(2)-temperature programmed reduction(H_(2)-TPR),and X-ray photoelectron spectroscopy(XPS)*** results show that the increase in calcination temperature from 400 to 500℃is conducive to the high dispersion of CuOx on catalyst surface and the incorporation of Cu species into the support to form the Cu-Ce-Zr-O solid *** raising of calcination temperature from 500 to 600℃,however,leads to the segregation of Cu species from the solid solution to aggregate on support surface and growth of highly dispersed CuOx *** highest catalytic activity is acquired over the CCZ calcined at 500℃,which can be ascribed to the largest contents of Cu+species and oxygen vacancies owing to the formation of the maximum amount of Cu-Ce-Zr-O solid solution.

关键词： CuCeZrO_(y)catalyst co oxidation Calcination temperature Grinding method Oxalate precursor Rare earths

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Confluence of asymmetric catalysis and electrosynthesis in sustainable chemical transformations

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Science China Chemistry 2024年第3期67卷 755-758页

作者： Qinglin Zhang Kang liang Chang guo Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of ChinaHefei 230026China

Electrosynthesis has gained widespread recognition for its extraordinary ability to precisely control the redox *** outstanding capability enables the direct conversion of non-functionalized substrates into reactive intermediates by utilizing easily accessible starting materials, eliminating the need for preliminary functionalization procedures and allowing for unconventional bond activations.

关键词： Confluence of asymmetric catalysis and electrosynthesis in sustainable chemical transformations

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Research on Credit Default Swaps Pricing Considering Moral Hazard Incentive under Reduce-Form Model

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Journal of Systems Science and Systems Engineering 2024年第3期33卷 311-329页

作者： liang Wu Kangjie He Zhe guo School of Mathematical Science Henan Institute of Science and TechnologyXinxiang453003China Public Front Office Department Industrial and Commercial Bank of ChinaZhengzhou450000China

Equilibrium pricing of credit default swaps(CDS)promotes efficient identification of credit risk in the market,which in turn leads to efficient allocation of ***,even when CDS have been priced in equilibrium,i.e.,when premiums are equal to anticipated payments,the moral hazard incentives of CDS buyers increase with CDS ***,it becomes an interesting research direction to study the impact of moral hazard incentives on the trading mechanism or pricing of derivatives(CDS).Most of the existing literature on the impact of moral hazard incentives in CDS pricing on derivatives trading mechanisms takes a macro perspective and focuses on the agreement risk *** literature exploring the analysis of the impact of moral hazard on the probability of agreement default from a micro perspective is not yet *** this in mind,this paper focuses on the mechanisms by which“fraud”,an extreme manifestation of micro-moral hazard incentives,affects the probability of *** paper introduces for the first time the concept of“claiming fraud”by credit protection buyers,which is different from the macro perspective of moral hazard incentives,and thus defines a specific extreme form of moral hazard ***,to address the intrinsic feature of the lack of economic explanatory power of the reduce-form model,this paper introduces a moral hazard incentive factor into the reduce-form model,and proposes a moral hazard state variable as a function of the asset value of the reference entity,which gives the reduce-form model strong economic explanatory power,and the default predictability is reduced by the description of the reduce-form *** terms of the object of study,this paper considers the issue of moral hazard incentives in the presence of claiming fraud in two reference entities to further explore the impact of moral hazard incentives on default protection at the micro level in terms of cyclic ***,based on the

关键词： Financial engineering moral hazard incentive claiming fraud reduce-form model probability of default calculation CDS pricing

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