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Sintering Densification Mechanism of Talc on Promoting Thermal Storage Andalusite Ceramics in Solar Thermal Power Generation

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Journal of the Chinese Ceramic Society 2015年第3期 111-117页

作者： wu jianfeng CHENG Hao XU Xiaohong LAO Xinbing ZHANG Yinfeng RAO Zhengang DENG Tengfei State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology

Mullite ceramic,as one of high-performance thermal storage ceramics for solar thermal power generation systems,was in-situ fabricated with talc as a sintering aid via semi-dry pressing and pressureless sintering in *** mullitization influence of talc as a sintering aid on the formation of andalusite was investigated,and its mechanism to promote the sintering densification of samples was *** results show that talc reacts with corundum at a low temperature to in-situ produce *** reacts in-situ to produce mullite and glass phase,which reduces the sintering temperature sharply when corundum reacts with rich silicon fluid directly and generates secondary *** resolves and produces magnesium oxide liquid phase,which contains active aluminium oxide lattice capable of reducing reaction activation energy and promoting remaining corundum to react with rich silicon fluid and produces secondary mullite.

关键词： andalusite talc mullite sintering densification thermal storage ceramics

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基于多智能体导航的高超飞行器信息融合方法

系统工程与电子技术 2020年第2期42卷 405-413页

作者：赵岩吴建峰高育鹏空军工程大学防空反导学院

精确导航技术是高超飞行器(hypersonic vehicle,HV)充分发挥威力的关键所在。然而,高马赫数和强机动性致使HV的导航系统误差及其观测噪声无法准确描述,制约着导航信息的精确性和实时性。为及时获取高精度导航信息,设计基于集员框架的卡... 详细信息

精确导航技术是高超飞行器(hypersonic vehicle,HV)充分发挥威力的关键所在。然而,高马赫数和强机动性致使HV的导航系统误差及其观测噪声无法准确描述,制约着导航信息的精确性和实时性。为及时获取高精度导航信息,设计基于集员框架的卡尔曼滤波算法。一方面采用多智能体分布式协同探测,形成观测椭球交叉集合,提高了观测效率和测量精度;另一方面,通过设计两类噪声模型,求其与状态估值的最小均方误差,实现滤波增益的计算,提高算法对噪声的抗扰动能力,使状态估值达到均方误差最小。通过数字仿真,将设计方法应用到HV导航模型中,并与扩展卡尔曼滤波和集员滤波的状态估值进行比较,结果表明,提出算法在不同噪声影响下具有更高的估计精度。研究成果将为HV实现实时精确导航提供技术支持,并具有重要的理论意义和应用价值。

关键词：信息融合卡尔曼滤波集员估计多智能体高超飞行器

Study on the Water Treatment Properties of the Porous Ceramic Filter Balls Synthesized with Industrial Solid Waste

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Study on the Water Treatment Properties of the Porous Cerami...

“生物微核技术监测水质的污染”研究性学习案例

2012 China Functional Materials Technology and Industry Forum

作者： Yongjiang Di Bi Jia Jun Wang Xiaohong Xu jianfeng wu School of Metallurgical and Materials Engineering Chongqing University of Science and Technology School of materials science and Engineering Wuhan University of Technology

The porous ceramic filter balls were synthesized with industrial solid waste by ceramic *** removal efficiency,filtration velocity and turbidity for the water treatment properties of the porous ceramic ball filter materials was studied comparing with that of the quartz sand filter *** test result shown that the decontamination efficiency of the porous ceramic ball filter was 5%to 10%high than that of the quartz sand *** the water turbidity fluctuated with magnitude about 50%,the changes of final water turbidity was in the range of 5%to 8%through the porous ceramic ball *** energy saving efficiency of the porous ceramic ball filter was very significant for the porous ceramic ball filter effectively extend the filtration cycle life.

关键词： Porous ceramic filter ball Quartz sand Water treatment Turbidity Removal efficiency

来源： cnki会议评论

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生物学通报 2010年第11期45卷 53-56页

作者：吴剑峰南通高等师范学校江苏南通226006

在提供"生物微核技术监测水质的污染"研究性学习案例的基础上,通过展现该研究性学习的过程,介绍了该案例的设计、实践操作过程与实践成果,并对该研究性学习的实施过程进行了教学反思。

关键词：研究性学习案例微核技术水质污染

Effects of different doses in continuous veno-venous hemofiltration on plasma lactate in critically ill patients

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Chinese Medical Journal 2014年第10期127卷 1827-1832页

作者： Liu Yongjun Ouyang Bin Chen Juan Chen Minying Ma Jie wu jianfeng Huang Shunwei Li Lifen Liu Zimeng Guan Xiangdong Department of Surgical Intensive Care Unit First Affiliated Hospitalof Sun Yat-sen University Guangzhou Guangdong 510080 China

Background Many studies have shown that continuous renal replacement therapy （CRRT） could clean lactate and treat the *** the contrary,some other studies found that filter lactate clearance only accounted for a very small part of total lactate clearance and the hemofilter＇s contribution to the overall lactate clearance was *** objective of this study was to evaluate the effects of various doses of continuous veno-venous hemofiltration （CWH） on plasma lactate elimination in critically ill *** Patients were divided into three groups according to their incipient plasma lactate *** A：lactate≤2 mmol/L,group B：lactate 2-5 mmol/L,group C：lactate ≥5 mmol/*** different doses （20 ***-1.h-1,35ml·kg-1·h-1 and 45 ***1.h-1） of CWH were applied to critically ill patients who experiencing *** concentrations of plasma lactate in pre-（A）,post-dialyzer （V） sites and ultrafiltrate were measured after each dosage of CWH was carried out for 30 *** of lactate clearance by the filter （RLC） and filter lactate clearance （FLC） and Lactate-Sieving Coefficient （LSC） were calculated under different circumstances,including different doses of CWH and different incipient lactate *** Fifteen patients were enrolled and 104 blood samples were drawn and lactate concentrations were measured in this *** was found increased （（9.36±9.73） mmol/h,（13.92±12.56） mmol/h and （16.52±12.71） mmol/h,P ＜0.05respectively） with the dose of CWH *** was also increased （（3.46±1.46）,（10.38±5.50） and （24.53±14.69） mmol/h,P ＜0.05 respectively） with the incipient lactate *** was increased （（1.95±0.63）,（2.95±0.74） and （3.45±0.54） L/h,P ＜0.05 respectively） with the dose of CVVH *** was no significant difference of LSC in different doses of CWH and different incipient lactate *** Plasma lactate can be eliminated by CWH and different doses of CWH affect the rate of lactate clearance in criti

关键词： continuous veno-venoous hemofiltration lactate critical illness

氢化可的松、维生素C、硫胺素联合方案在脓毒症治疗中的争议与价值

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中华医学杂志 2021年第17期101卷 1206-1209页

作者：宋文亮吴健锋中山大学附属第一医院重症医学科广州510080

脓毒症是重症监护病房患者死亡的常见原因,有回顾性研究显示联合氢化可的松、维生素C、硫胺素(即HAT方案)可降低脓毒症及感染性休克患者的病死率,而近期多项随机对照试验(RCTs)结果并不统一。有荟萃分析显示,HAT方案可降低脓毒症及感染... 详细信息

脓毒症是重症监护病房患者死亡的常见原因,有回顾性研究显示联合氢化可的松、维生素C、硫胺素(即HAT方案)可降低脓毒症及感染性休克患者的病死率,而近期多项随机对照试验(RCTs)结果并不统一。有荟萃分析显示,HAT方案可降低脓毒症及感染性休克患者病死率、改善序贯器官衰竭评分(SOFA评分)、减少血管活性药物使用,但在HAT方案的适应人群、启用时间、应用剂量、疗程、药物安全性等方面仍存在争议,需优化目前RCTs设计以提供更为确切的证据。

关键词：脓毒症脓毒症休克氢化可的松维生素C 硫胺素

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财务舵主个人特征对家庭金融市场参与的影响

金融经济学研究 2017年第4期32卷 82-93页

作者：贺建风吴慧华南理工大学经济与贸易学院广东广州510006 华南师范大学经济与管理学院广东广州510006

基于离散选择模型中的Logit、Ologit和Tobit模型,利用中国家庭追踪调查(CFPS)数据实证分析财务舵主个人特征对家庭金融市场参与选择、参与广度和参与深度三个方面的影响。研究发现:财务舵主的性别差异对于金融市场的参与行为有显著影响... 详细信息

基于离散选择模型中的Logit、Ologit和Tobit模型,利用中国家庭追踪调查(CFPS)数据实证分析财务舵主个人特征对家庭金融市场参与选择、参与广度和参与深度三个方面的影响。研究发现:财务舵主的性别差异对于金融市场的参与行为有显著影响,女性财务舵主家庭更倾向于参与金融市场,其金融市场参与的广度和深度均更强,性别差异的来源集中于城市家庭,原因则主要是女性舵主的人力资本特征对金融市场参与行为的影响程度较男性舵主更高;财务舵主的年龄与金融市场参与行为的三方面均呈"倒U"型关系;具有城市户口的财务舵主更倾向于参与金融市场,其参与的广度和深度均远高于农村户口家庭;人力资本的受教育程度和认知能力两方面对金融市场参与行为有正向显著影响。

关键词：财务舵主个人特征家庭金融市场参与离散选择模型

白酒细菌酒曲固态培养条件下*** S12产四甲基吡嗪的合成机制

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食品与生物技术学报 2014年第1期33卷 8-15页

作者：吴建峰徐岩江南大学生物工程学院/工业生物技术教育部重点实验室江苏无锡214122 江苏今世缘酒业股份有限公司江苏涟水223411

四甲基吡嗪又名川芎嗪,是白酒中重要的风味成分,但其在白酒酿造过程的形成机制尚不明晰。为了探索白酒固态酿造体系中四甲基吡嗪的合成机制,作者从白酒细菌曲中分离得到一株产四甲基吡嗪菌株*** S12,并对细菌曲固态培养条件下四甲基吡... 详细信息

四甲基吡嗪又名川芎嗪,是白酒中重要的风味成分,但其在白酒酿造过程的形成机制尚不明晰。为了探索白酒固态酿造体系中四甲基吡嗪的合成机制,作者从白酒细菌曲中分离得到一株产四甲基吡嗪菌株*** S12,并对细菌曲固态培养条件下四甲基吡嗪的合成机制进行了探究。结果表明:固态条件下*** S12合成四甲基吡嗪分两步来进行:第一步,在全细胞催化下细菌利用底物合成四甲基吡嗪的前提物质3-羟基丁酮,同时氨基酸残基在氨基酸脱氢酶作用下生成氨;第二步,3-羟基丁酮和氨在热动力作用下生成四甲基吡嗪。

关键词： B subtilis S12 固态发酵四甲基吡嗪合成机制

Diagnostic Accuracy of Transthoracic Echocardiography to Predict Fluid Responsiveness by Passive Leg Raising in the Critically Ill: A Meta-Analysis

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Open Journal of Emergency Medicine 2016年第4期4卷 83-92页

作者： Xiang Si Daiyin Cao jianfeng wu Juan Chen Zimeng Liu Minying Chen Bin Ouyang Xiangdong Guan Department of Surgical Intensive Care Unit The First Affiliated Hospital of Sun Yat-sen University Guangzhou China Department of Critical Care Medicine The Sixth Affiliated Hospital of Sun Yat-sen University Guangzhou China

Background: Hemodynamic instability is common in critical patients and not all patients respond to fluid challenge, so we need accurate and rapid hemodynamic techniques to help the clinicians to guide fluid treatment. Numerous hemodynamic techniques have been used to predict fluid responsiveness till now. Transthoracic echocardiography (TTE) appears to have the ability to predict fluid responsiveness, but there is no consensus on whether it can be used by passive leg raising (PLR). Methods: We performed a literature search using MEDLINE (source PubMed, from 1947), EMBASE (from 1974) and the Cochrane Database of Systematic Reviews for prospective studies with no restrictions. Pooled effect estimates were obtained by using random-effects meta-analysis. Results: 7 prospective studies involving 261 patients and 285 boluses were identified. The pooled sensitivity and specificity of TTE are 86% (79% - 91%) and 90% (83% - 94%), respectively. The summary receiver operating characteristic (sROC) curve shows an optimum joint sensitivity and specificity of 0.88, with area under the sROC curve (AUC) of 0.94. The result of diagnostic odds ratio (DOR) is 50.62 (95% confidence interval [CI]: 23.70 - 108.12). The results of positive likelihood ratio (+LR) and negative likelihood ratio (?LR) are 7.07 (95% CI: 4.39 - 11.38) and 0.19 (95% CI: 0.13 - 0.28), which indicated strong diagnostic evidence. Conclusions: TTE is a repeatable and reliable noninvasive tool to predict fluid responsiveness in the critically ill during PLR with good test performance. This meta-analysis brings evidence to employ well-trained clinician-echocardiographers to assess patients’ volume statue via TTE to benefit daily work in intensive care units (ICUs).

关键词： TTE PLR Fluid Responsiveness Meta-Analysis