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学者姓名:李潇潇
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Ammonia is an exceptional fuel for solid oxide fuel cells (SOFCs), because of the high content of hydrogen and the advantages of carbon neutrality. However, the challenge lies in its unsatisfactory performance at intermediate temperatures (500-600 degrees C), impeding its advancement. An electrolyte-supported proton-ceramic fuel cell (PCFC) was fabricated employing BaZr0.1Ce0.7Y0.2O3-delta (BZCY) as the electrolyte and Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) as the cathode. In this study, the performance of PCFC using NH3 as fuel within an operating temperature range of 500-700 degrees C was improved by adding an M(Ni,Ru)/CeO(2 )catalyst layer to reconstruct the anode surface. The electrochemical performance of direct ammonia PCFC (DA-PCFC) were improved to different extents. Compared to H-2 as fuel, the degradation ratio of peak power densities (PPDs) of Ni/CeO2-loaded PCFC fueled with NH3 decreased at 700-500 degrees C, with a decrease to 13.3% at 700 degrees C and 30.7% at 500 degrees C. The findings indicate that Ru-based catalysts have a greater promise for direct ammonia SOFCs (DA-SOFCs) at operating temperatures below 600 degrees C. However, the enhancement effect becomes less significant above 600 degrees C when compared to Ni-based catalysts.
Keyword :
ammonia ammonia anode anode M/CeO2 catalyst layer M/CeO2 catalyst layer proton-ceramic fuel cell (PCFC) proton-ceramic fuel cell (PCFC)
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GB/T 7714 | Li, Xiaoxiao , Chen, Jiangping , Huang, Yunyun et al. Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer [J]. | FRONTIERS IN ENERGY , 2024 , 18 (6) : 875-884 . |
MLA | Li, Xiaoxiao et al. "Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer" . | FRONTIERS IN ENERGY 18 . 6 (2024) : 875-884 . |
APA | Li, Xiaoxiao , Chen, Jiangping , Huang, Yunyun , Fang, Huihuang , Chen, Chongqi , Zhong, Fulan et al. Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer . | FRONTIERS IN ENERGY , 2024 , 18 (6) , 875-884 . |
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近年来,国际安全形势复杂多变,我国正面临着新的更为复杂的安全挑战,这给军事斗争准备工作提出了新的更高的要求.在习近平新时代强军思想的指导下,航天企业坚持以"提升平战转换能力、快速动员能力和持续保障能力,将装备动员潜力顺畅转换为国防实力"为目标,坚持"强指令、快执行、大协同"的特殊时期装备动员理念,努力构建"实战导向、科学高效、专常兼顾"的装备动员体制与运行管理体系.
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GB/T 7714 | 王海洋 , 刘波 , 张伟 et al. 基于扎根理论的航天企业装备动员管理要素分析 [J]. | 航天工业管理 , 2023 , (1) : 53-57 . |
MLA | 王海洋 et al. "基于扎根理论的航天企业装备动员管理要素分析" . | 航天工业管理 1 (2023) : 53-57 . |
APA | 王海洋 , 刘波 , 张伟 , 江源博 , 李潇潇 . 基于扎根理论的航天企业装备动员管理要素分析 . | 航天工业管理 , 2023 , (1) , 53-57 . |
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We aimed to investigate acute changes before and after low-intensity continuous and intermittent blood flow restriction (BFR) deep-squat training on thigh muscle activation characteristics and fatigue level under suitable individual arterial occlusion pressure (AOP). Twelve elite male handball players were recruited. Continuous (Program 1) and intermittent (Program 2) BFR deep-squat training was performed with 30% one-repetition maximum load. Program 1 did not include decompression during the intervals, while Program 2 contained decompression during each interval. Electromyography (EMG) was performed before and after two BFR training programs in each period. EMG signals of the quadriceps femoris, posterior femoral muscles, and gluteus maximus, including the root mean square (RMS) and normalized RMS and median frequency (MF) values of each muscle group under maximum voluntary contraction (MVC), before and after training were calculated. The RMS value under MVC (RMSMVC) of the rectus femoris (RF), vastus medialis (VM), vastus lateralis (VL), and gluteus maximus (GM) decreased after continuous and intermittent BFR training programs, and those of the biceps femoris (BF) and semitendinosus (SEM) increased; The RMS standard values of the VL, BF, and SEM were significantly increased after continuous and intermittent BFR training (P < 0.05), The RMS value of GM significantly decreased after cuff inflating (P < 0.05). The MF values of RF, VM, VL, and GM decreased significantly after continuous BFR training (P < 0.05). Continuous BFR deep-squat training applied at 50% AOP was more effective than the intermittent BFR training program. Continuous application of BFR induces greater levels of acute fatigue than intermittent BFR that may translate into greater muscular training adaptations over time.
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GB/T 7714 | Wang, Yan , Li, Zhiyuan , Che, Tongtong et al. Effect of continuous and intermittent blood flow restriction deep-squat training on thigh muscle activation and fatigue levels in male handball players [J]. | SCIENTIFIC REPORTS , 2023 , 13 (1) . |
MLA | Wang, Yan et al. "Effect of continuous and intermittent blood flow restriction deep-squat training on thigh muscle activation and fatigue levels in male handball players" . | SCIENTIFIC REPORTS 13 . 1 (2023) . |
APA | Wang, Yan , Li, Zhiyuan , Che, Tongtong , Zhang, Wenjuan , Li, Xiaoxiao . Effect of continuous and intermittent blood flow restriction deep-squat training on thigh muscle activation and fatigue levels in male handball players . | SCIENTIFIC REPORTS , 2023 , 13 (1) . |
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To establish biosafety risk-management guidelines for clinical departments of military central hospitals in China. Using failure mode and effects analysis (FMEA), we assessed the biosafety risk priority number (RPN) of clinical departments of three military central hospitals. Nosocomial infection (NI), medical substance-associated accident (MSA), medical technology misuse (MTM), and synthetic RPN were 0.50 to 4.37, 0.50 to 2.91, 0.50 to 3.42, and 0.64 to 3.28, respectively. NI prevention investment was negatively correlated with NI risk, while NI RPN was positively correlated with MSA RPN. There were significant differences between groups of departments in synthetic and MTM RPN. NI, MSA, and MTM constitute a hospital biosafety risk. However, their risk factors are distributed differently among departments. Traditional NI prevention investment can reduce NI risk, but such investments were not effective for MSA and MTM. Targeted measures need to be taken by referring to RPN and risk levels derived from FMEA.
Keyword :
biosafety biosafety clinical department clinical department hospital management hospital management nosocomial infection nosocomial infection technology misuse technology misuse
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GB/T 7714 | Li, Xiaoxiao , He, Maihong , Lin, Xian et al. Biosafety Management Risk Analysis for Clinical Departments of Military Central Hospitals in the Fujian Province of China [J]. | SAGE OPEN , 2022 , 12 (1) . |
MLA | Li, Xiaoxiao et al. "Biosafety Management Risk Analysis for Clinical Departments of Military Central Hospitals in the Fujian Province of China" . | SAGE OPEN 12 . 1 (2022) . |
APA | Li, Xiaoxiao , He, Maihong , Lin, Xian , Lin, Ying . Biosafety Management Risk Analysis for Clinical Departments of Military Central Hospitals in the Fujian Province of China . | SAGE OPEN , 2022 , 12 (1) . |
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目的 提出一套适用于军队中心医院主要科室的生物安全管理等级.方法 采用头脑风暴结合德尔菲流程设定科室生物安全构成的要素;通过失效模式与影响分析计算各科室的生物安全风险优先指数(RPN);使用文献计量结合层次分析法评估生物安全风险要素的风险概率、严重性和可监测性;采用单因素方差分析对比不同类型科室生物安全风险的差异.结果 评估了38个科室的医院感染、生物材质和生物技术管理风险的RPN值及其综合RPN值;综合RPN在4.19~0.18之间,中位数为2.47,综合RPN值最高的5个科室为传染科、医学检验科、消毒供应科、呼吸内科和老年病科;专科类科室RPN值显著低于内科类、外科类科室.据此提出Ⅰ—Ⅴ级生物安全管理等级,其中,Ⅰ级(最低级)9个、Ⅱ级6个、Ⅲ级12个、Ⅳ级7个、Ⅴ级(最高级)4个.结论 本文得出的RPN值及生物安全管理等级有助于卫勤机关科学配置生物安全管控资源,提高管控绩效,为制订相关管理标准奠定基础.
Keyword :
军队医院 军队医院 医院感染 医院感染 医院科室 医院科室 生物安全 生物安全 管理等级 管理等级
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GB/T 7714 | 贺买宏 , 李潇潇 . 非传统安全视角下军队中心医院科室生物安全管理等级研究 [J]. | 中国消毒学杂志 , 2021 , 38 (7) : 503-506,510 . |
MLA | 贺买宏 et al. "非传统安全视角下军队中心医院科室生物安全管理等级研究" . | 中国消毒学杂志 38 . 7 (2021) : 503-506,510 . |
APA | 贺买宏 , 李潇潇 . 非传统安全视角下军队中心医院科室生物安全管理等级研究 . | 中国消毒学杂志 , 2021 , 38 (7) , 503-506,510 . |
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Objectives We aimed to establish a set of disability weights (DWs) for COVID-19 symptoms, evaluate the disease burden of inpatients and analyse the characteristics and influencing factors of the disease. Design This was a multicentre retrospective cross-sectional descriptive study. Setting The medical records generated in three temporary military hospitals in Wuhan. Participants Medical records of 2702 inpatients generated from 5 February to 5 April 2020 were randomly selected for this study. Primary and secondary outcome measures DWs of COVID-19 symptoms were determined by the person trade-off approach. The inpatients' medical records were analysed and used to calculate the disability-adjusted life years (DALYs). The mean DALY was evaluated across sex and age groups. The relationship between DALY and age, sex, body mass index, length of hospital stay, symptom duration before admission and native place was determined by multiple linear regression. Results For the DALY of each inpatient, severe expiratory dyspnoea, mild cough and sore throat had the highest (0.399) and lowest (0.004) weights, respectively. The average synthetic DALY and daily DALY were 2.29 +/- 1.33 and 0.18 +/- 0.15 days, respectively. Fever and fatigue contributed the most DALY at 31.36%, whereas nausea and vomiting and anxiety and depression contributed the least at 7.05%. There were significant differences between sex and age groups in both synthetic and daily DALY. Age, body mass index, length of hospital stay and symptom duration before admission were strongly related to both synthetic and daily DALY. Conclusions Although the disease burden was higher among women than men, their daily disease burdens were similar. The disease burden in the younger population was higher than that in the older population. Treatment at the hospitals relieved the disease burden efficiently, while a delay in hospitalisation worsened it.
Keyword :
health economics health economics health services administration & health services administration & management management public health public health
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GB/T 7714 | He, Maihong , Li, Xiaoxiao , Tan, Qing et al. Disease burden from COVID-19 symptoms among inpatients at the temporary military hospitals in Wuhan: a retrospective multicentre cross-sectional study [J]. | BMJ OPEN , 2021 , 11 (5) . |
MLA | He, Maihong et al. "Disease burden from COVID-19 symptoms among inpatients at the temporary military hospitals in Wuhan: a retrospective multicentre cross-sectional study" . | BMJ OPEN 11 . 5 (2021) . |
APA | He, Maihong , Li, Xiaoxiao , Tan, Qing , Chen, Yong , Kong, Yue , You, Jianping et al. Disease burden from COVID-19 symptoms among inpatients at the temporary military hospitals in Wuhan: a retrospective multicentre cross-sectional study . | BMJ OPEN , 2021 , 11 (5) . |
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This study established a model to assess the capability of civil universities to support the development of China's space industry. Using linear scaling, data from 41 elite universities were assessed for three dimensions: education, research, and culture. Differences among the indicators and their correlations were examined. A k-means algorithm was employed to classify universities into four clusters. According to the results, high support potential for the space industry is concentrated in certain universities. With the outcomes, the study also provides recommendations to guide space industry authorities and university leaders in policymaking. Further, the model can be used as a feasible, simple, and practical tool for similar studies.
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GB/T 7714 | Li, Xiaoxiao , Niu, Wei . Support potential of elite civil universities for China's space industry: Higher educational mobilization capacity for China's space ambition [J]. | PLOS ONE , 2020 , 15 (12) . |
MLA | Li, Xiaoxiao et al. "Support potential of elite civil universities for China's space industry: Higher educational mobilization capacity for China's space ambition" . | PLOS ONE 15 . 12 (2020) . |
APA | Li, Xiaoxiao , Niu, Wei . Support potential of elite civil universities for China's space industry: Higher educational mobilization capacity for China's space ambition . | PLOS ONE , 2020 , 15 (12) . |
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目的建立新型冠状病毒肺炎(COVID-19)感染症状的失能权重(DW),对住院患者症状的疾病负担进行评估,并对该病疾病负担相关因素进行分析。方法通过文献调研结合医务人员问卷调查确定感染症状项目,以世卫组织全球疾病负担DW为基准,通过专家组层次分析法确定DW。回顾泰康同济(武汉)医院COVID-19感染患者病历资料,借助文本分析软件提取相关数据,并计算患者伤残调整寿命年(DALY)。采用方差分析,对性别组、年龄组的DALY进行均数检验。采用多元线性回归模型分析DALY与患者年龄、体质量指数、住院时间、入院前症状持续时间的关系。结果得出COVID-19感染症状的DW,并计算得到患者DALY;其中,...
Keyword :
伤残调整寿命年 伤残调整寿命年 住院病人 住院病人 新型冠状病毒 新型冠状病毒 新型冠状病毒肺炎 新型冠状病毒肺炎 疾病负担 疾病负担 症状 症状
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GB/T 7714 | 李潇潇 , 贺买宏 . 新型冠状病毒肺炎住院患者症状所致疾病负担评估 [J]. | 中华医院感染学杂志 , 2020 , 30 (21) : 3201-3205 . |
MLA | 李潇潇 et al. "新型冠状病毒肺炎住院患者症状所致疾病负担评估" . | 中华医院感染学杂志 30 . 21 (2020) : 3201-3205 . |
APA | 李潇潇 , 贺买宏 . 新型冠状病毒肺炎住院患者症状所致疾病负担评估 . | 中华医院感染学杂志 , 2020 , 30 (21) , 3201-3205 . |
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在回顾日本航天政策发展历程的基础上,本文对日本当前航天政策的情况进行了梳理,分析其政策层次,介绍了日本航天法律及其航天政策中的国防安全内容,归纳了其对外空威胁的分类及空间攻防手段。从完善航天装备、发展航天产业及强化以美日同盟合作等3个方面,归纳其推行航天政策的着力点,及其航天政策施行中的问题。最后,从依托航天技术提高作战能力、升级装备强化外空基础设施建设、培育高适应性的运载发射能力等3个方面,对未来日本航天政策的动向做了展望。
Keyword :
国防安全 国防安全 日本 日本 航天产业 航天产业 航天政策 航天政策 航天法 航天法
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GB/T 7714 | 李潇潇 , 王海洋 , 史鑫 . 日本当前航天政策及其发展动向(上) [J]. | 军民两用技术与产品 , 2020 , (11) : 28-33 . |
MLA | 李潇潇 et al. "日本当前航天政策及其发展动向(上)" . | 军民两用技术与产品 11 (2020) : 28-33 . |
APA | 李潇潇 , 王海洋 , 史鑫 . 日本当前航天政策及其发展动向(上) . | 军民两用技术与产品 , 2020 , (11) , 28-33 . |
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<正>(接上期)五、日本航天政策的着力点日本学者认为,要落实《宇宙基本法》的理念,需要解决3个方面的课题:其一是配备满足国家航天战略所需的装备;其二是建立基于《宇宙活动法》和《卫星遥感法》的航天产业;其三是必须强化和美国及相关盟国的合作。
Keyword :
国防安全 国防安全 弹道导弹 弹道导弹 空间态势感知 空间态势感知
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GB/T 7714 | 李潇潇 , 王海洋 , 史鑫 . 日本当前航天政策及其发展动向(下) [J]. | 军民两用技术与产品 , 2020 , (12) : 30-35 . |
MLA | 李潇潇 et al. "日本当前航天政策及其发展动向(下)" . | 军民两用技术与产品 12 (2020) : 30-35 . |
APA | 李潇潇 , 王海洋 , 史鑫 . 日本当前航天政策及其发展动向(下) . | 军民两用技术与产品 , 2020 , (12) , 30-35 . |
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