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基于多元统计分析的区域高技术产业发展水平比较研究

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经济经纬 2010年第1期27卷 64-67页

作者：符想花河南财经学院统计学系河南郑州450002

高技术产业是国民经济的战略性先导产业,是推动产业结构升级和经济增长方式转变的重要力量。高技术产业的发展水平,已成为一个国家或地区综合竞争力的重要体现。通过哪些指标来反映高技术产业的发展水平,通过什么方法对区域高技术产业... 详细信息

高技术产业是国民经济的战略性先导产业,是推动产业结构升级和经济增长方式转变的重要力量。高技术产业的发展水平,已成为一个国家或地区综合竞争力的重要体现。通过哪些指标来反映高技术产业的发展水平,通过什么方法对区域高技术产业发展水平进行比较,这是最为关键的。笔者本着科学性、全面性、可行性、可比性、同向性、总量指标与相对指标相结合的原则,从高技术产业的投入、产出(包括科技创新)、经济效益三个方面,选出了18项指标反映高技术产业的发展水平,并用因子分析、聚类分析方法对区域高技术产业发展水平进行了比较,得出:高技术产业的发展水平与经济发展水平密切相关,但也有例外。

关键词：高技术产业统计指标体系因子分析聚类分析

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Cardioprotective effects of simvastatin on reversing electrical remodeling induced by myocardial ischemia-reperfusion in normocholesterolemic rabbits

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Chinese Medical Journal 2008年第6期121卷 551-556页

作者： DING Chao fu xiang-hua HE Zhen-shan CHEN Hui-xiao XUE Ling LI Jun-xia Department of Cardiology Second Hospital of Hebei MedicalUniversity Institute of Cardiocerebrovascular Disease of HebeiProvince Shijiazhuang Hebei 050000 China Department of Cardiology Bethune International Peace Hospital ofPeople's Liberation Army Shijiazhuang Hebei 050082 China

Background Recent studies have revealed that pretreatment with statin is effective in preventing arrhythmia, but its electrophysiological mechanism is unclear. This study was conducted to investigate the cardioprotective effects of simvastatin on reversing electrical remodeling in left ventricular myocytes of rabbit heart undergoing ischemia-reperfusion, so as to explore the ionic mechanism responsible for the anti-arrhythmic effect of statin. Methods Forty-five rabbits were randomly divided into three groups： ischemic-reperfusion group （I-R）, simvastatin intervention group （Statin） and sham-operated control group （CON）. Anesthetized rabbits were subjected to 30-minute ischemia by ligation of the left anterior descending coronary artery and a 60-minute reperfusion after a 3-day administration of oral simvastatin of 5 mg-kg^-1.d^-1 in the Statin group or a placebo in the I-R group. Single ventricular myocytes were isolated enzymatically from the epicardial zone of the infracted region dedved from the hearts in the I-R and Statin group and the same anatomical region in the CON animals. The whole cell patch-clamp technique was used to record membrane ionic currents, including sodium current （IRa）, L-type calcium current （Ica-L） and transient outward potassium current （Ito）. Simultaneously, the level of serum cholesterol was examined. Results There was no significant difference in the serum cholesterol concentration among the three groups. The peak IRa current density （at -30 mV） was significantly decreased in I-R （（22.46±5.32） pA/pF, n=12） compared with CON （（42.78±5.48） pA/pF, n=16, P〈0.01） and Statin （（40.66±5.89） pA/pF, n=15, P〈0.01）, while the peak IRa current density in the Statin group was not different from CON （P〉0.05）. The peak ICa-L current density （at 0 mV） was significantly increased in I-R （（4.34±0.92） pA/pF, n=15） compared with CON （（3.13±1.22） pA/pF, n=13, P〈0.05） and Statin （（3.46±0.85） pNpF, n=16, P〈0.05）, while the Peak ICa-L current density in Statin

关键词： simvastatin ischemia reperfusion patch-clamp techniques ionic channel

Prevalence,risk factors and clinical features of sensory A-V pattern exotropia

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International Journal of Ophthalmology(English edition) 2025年第2期18卷 323-329页

作者： Bin-Bin Zhu Shi-Yu Tang xiang-Jun Wang Li-Cheng fu Jian-hua Yan State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-Sen UniversityGuangzhou 510060Guangdong ProvinceChina Ophthalmology Department of Surgerythe Second People’s Hospital of FoshanFoshan 528000Guangdong ProvinceChina

AIM:To investigate the potential mechanisms of A-V pattern and evaluate the surgical outcomes used in the treatment of sensory ***:The medical records of patients with sensory A-V pattern exotropia who underwent strabismus surgery between May 2014 to June 2019 was retrospectively *** control group included sensory exotropia patients without A-V pattern and concomitant A-V pattern exotropia patients with normal vision who undergone strabismus surgery over this same time *** alignment,best corrected visual acuity,oblique muscle function,and stereopsis records were ***:Among the 843 eligible patients,91(10.79%;39 males and 52 females)had A-pattern(54,6.4%)or V-pattern(37,4.4%).Age at onset of vision impairment was 4±5y and at the time of surgery was 25±*** significant negative correlations were present between impaired visual acuity and the pre-operative exodeviation(r=-0.198,P=0.016)and patterns(r=-0.207,P=0.015).Age at surgery and exodeviation in patients with concomitant A-V pattern exotropia was significantly earlier as compared with that of sensory A-V pattern exotropia and sensory exotropia(both P<0.0001).There were no significant differences in these clinical variables between sensory exotropia with or without A-V *** and pattern were significantly reduced in patients receiving horizontal rectus surgery with or without oblique muscle surgery(both P<0.0001).CONCLUSION:The prevalence of sensory A-V pattern exotropia in our study is 10.79%.Visual acuity represents an important factor contributing to the occurrence and development of A-V *** horizontal rectus surgery can provide a good option for the correction of sensory A-V pattern exotropia.

关键词： sensory exotropia A-V pattern oblique muscle dysfunction horizontal rectus surgery

Effect of Intravenous Administration of Liposomal Prostaglandin E1 on Microcirculation in Patients with ST Elevation Myocardial Infarction Undergoing Primary Percutaneous Intervention

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Chinese Medical Journal 2015年第9期128卷 1147-1150页

作者： Li-Ye Wei xiang-hua fu Wei Li Xi-Le Bi Shi-Ru Bai Kun Xing Yan-Bo Wang Department of Cardiology The First Hospital of Hebei Medical University Shijiazhuang Hebei 050000 China Department of Cardiology The Second Hospital of Hebei Medical University Shijiazhuang Hebei 050000 China

Background：Several studies have demonstrated that primary percutaneous coronary intervention （PCI） can result in reperfusion *** study aims to investigate the effectiveness of liposomal prostaglandin E l （Lipo-PGE1,Alprostadil,Beijing Tide Pharmaceutical Co.,Ltd.） for enhancing microcirculation in reperfusion *** addition,this study determined the optimal administration method for acute ST elevation myocardial infarction （STEMI） patients undergoing primary ***：Totally,68 patients with STEMI were randomly assigned to two groups：intravenous administration ofLipo-PGE 1 （Group A）,and no Lipo-PGE1 administration （Group B）.The corrected thrombolysis in myocardial infarction （TIMI） frame count （cTFC） and myocardial blush grade （MBG） were *** were followed up for 6 *** adverse cardiac events （MACE） were also ***：There was no significant difference in the baseline characteristics between the two *** cTFC parameter in Group A was significantly lower than Group B （18.06 ± 2.06 vs.25.31 ± 2.59,P ＜ 0.01）.The ratio of final MBG grade-3 was significantly higher （P ＜ 0.05） in Group A （87.9％） relative to Group B （65.7％）.There was no significant difference between the two groups in final TIMI-3 flow and *** were followed up for 6 months,and the occurrence of MACE in Group A was significantly lower than that in Group B （6.1％ vs.25.9％ respectively,P ＜ 0.05）.Conclusions：Myocardial microcirculation of reperfusion injury in patients with STEMI,after primary PCI,can be improved by administering Lipo-PGE1.

关键词： Intravenous Administration Liposomal Prostaglandin E l Primary Percutaneous Coronary Intervention ST Elevation Myocardial Infarction

Quantum public-key crypto via EPR pairs

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Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 54-59页

作者： xiang-Qun fu Hong-Wei Li Jian-Hong Shi Tan Li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering UniversityZhengzhou 450004China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

With the development of quantum computing technology,quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key *** paper designs a quantum trapdoor one-way function via EPR pairs and quantum *** on this,a new quantum public-key cryptosystem is presented,which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext *** with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition,which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs

Subjective sleepiness in heart failure patients with sleep-related breathing disorder

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Chinese Medical Journal 2009年第12期122卷 1375-1379页

作者： WANG Han-qiao CHEN Gang LI Jing HAO Shu-min GU Xin-shun PANG Jiang-na fu xiang-hua Sleep Breathing Disorder Department Third Hospital of Hebei Medical University Shijiazhuang Hebei 050017 China Department of Cardiology Second Hospital of Hebei Medical University Shijiazhuang Hebei 050051 China

Background Previous studies show that sleep-related breathing disorder （SRBD） is common in patients with heart failure （HF） and is associated with increased mortality. This study aimed to determine whether there was significant difference of subjective daytime sleepiness between HF patients with and without SRBD. Methods We enrolled, prospectively, 195 consecutive HF patients with left ventricular ejection fractions （LVEF） ≤45% and all subjects underwent polysomnography to measure the sleep structure between 2005 and 2008. Patients were then assigned to those with SRBD including obstructive and central sleep apnea （apnea-hypopnea index （AHI） ≥5/hour of sleep） and those without SRBD （AHI 〈5/hour） according to the sleep study. The subjective sleepiness was assessed with Epworth sleepiness scale （ESS）. Results Among 195 HF patients, the prevalence of obstructive sleep apnea （OSA） was 53% and of central sleep apnea （CSA） was 27%. There was no significant difference of ESS scores between patients without SRBD （NSA） and with SRBD （NSA vs OSA： 6.7±0.6 vs 7.6±0.4, P=0.105 and NSA vs CSA： 6.7±0.6 vs 7.4±K）.5, P=0.235, respectively）, indicating that SRBD patients had no more subjective daytime sleepiness. Compared with NSA, patients with SRBD had increased arousal index （Arl）（NSA vs OSA： 14.1±1.4 vs 26.3 ±1.5, P〈0.001 and NSAvs CSA： 14.1±1.4 vs 31.3±3.5, P 〈0.001, respectively）, more awake number after sleep onset （NSA vs OSA： 19.2±1.5 vs 26.2±1.4, P=0.01 and NSA vs CSA： 19.2±1.5 vs 36.9±4.4, P 〈0.001, respectively）, and reduced proportion of slow-wave sleep （SWS）（NSA vs OSA： 13.8±1.7 vs 9.3±0.7, P=0.024 and NSA vs CSA： 13.8±1.7 vs 8.9±0.9, P=0.024, respectively）. Conclusions OSA and CSA remain common in patients with HF on optimal contemporary therapy. Patients with both HF and SRBD have no significant subjective daytime sleepiness compared with patients without SRBD, despite of significantly increased awake number, arousal and decreased proportion of deep sleep stages. It

关键词： heart failure sleep-related breathing disorder Epworth sleepiness scale

基于P2P的个性化Web搜索系统的设计与实现

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计算机工程与应用 2007年第7期43卷 111-113,151页

作者：傅向华明仲深圳大学信息工程学院广东深圳518060

针对中心化的Web信息搜索系统在覆盖率、及时性、个性化、可扩展性等方面存在的问题,提出了一种基于Peer-to-Peer(P2P)的可扩展、个性化的Web搜索系统PeerBridge。PeerBridge基于分布式哈希表组织大量的网络结点形成有组织的P2P覆盖网络... 详细信息

针对中心化的Web信息搜索系统在覆盖率、及时性、个性化、可扩展性等方面存在的问题,提出了一种基于Peer-to-Peer(P2P)的可扩展、个性化的Web搜索系统PeerBridge。PeerBridge基于分布式哈希表组织大量的网络结点形成有组织的P2P覆盖网络,每个对等体作为一个主题搜索引擎,根据用户兴趣从Web中搜索特定主题相关的信息,而具有相似主题的对等体被聚集在一起形成基于主题的对等体簇,协作进行Web搜索与信息共享。并采用主题驱动的Web爬行、基于语义概念的文档分类、个性化的链接分析和基于主题划分的P2P搜索等机制来改善PeerBridge的性能。

关键词： Web搜索对等网络 Web挖掘

Theoretical Study on CO_(2)Hydrogenation on In_(2)O_(3)(111)Supported Single-Atom Catalysts:Horiuti-Polanyi versus Non-Horiuti-Polanyi Mechanism

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Chinese Journal of Chemical Physics 2025年第1期38卷 54-62,I0055,I0056页

作者： xiang Li Gang fu State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

In the field of catalytic hydro-genation,two primary mecha-nistic pathways,namely the Ho-riuti-Polanyi(HP)mechanism and the non-HP mechanism,have been extensively *** understandings suggested that the non-HP mechanism preferred to occur on the coinage metal surfaces,such as copper,silver,and gold,which exhibited low activity towards H_(2) ***,we offered a detailed theoretical investigation into the mechanisms of CO_(2)hydrogenation to formic acid on M_(1)-In_(2)O_(3)(111)surfaces,using density functional theory *** calculations provided novel in-sights into the preference of the non-HP mechanism on reduced single-atom noble metal cata-lysts,such as r-Rh_(1)-In_(2)O_(3)(111)and r-Ir_(1)-In_(2)O_(3)(111).In these cases,molecularly adsorbed H_(2) would be polarized into H^(δ−)-H^(δ+),thus facilitating the electrophilic attack to the O in CO_(2).Conversely,the H^(δ+)species,derived from heterolytically dissociated H_(2),exhibited a strong affinity on the adjacent oxygen site at the M-O-In *** strong adsorption resulted in a higher energy barrier for CO_(2)hydrogenation,thereby rendering the HP mechanism less viable than the non-HP *** results were anticipated to provide a deeper understanding of hydrogenation reactions on oxide-supported noble single-atom catalysts and theoretical guidance for the development of novel high-performance catalysts for catalytic hydrogena-tion reactions.

关键词： Reduced single-atom catalysts CO_(2)hydrogenation Density functional theory calculation Heterolytic dissociation of H_(2) Molecular adsorption of H_(2)

Bioenergy recovery and carbon emissions benefits of short-term bio-thermophilic pretreatment on low organic sewage sludge anaerobic digestion:A pilot-scale study

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Journal of Environmental Sciences 2025年第2期148卷 321-335页

作者： Hui Wang xiang fu Haozhe huang Danni Shen Dongdong Fan Liming Zhu Xiaohu Dai Bin Dong College of Environmental Science and Engineering Tongji UniversityShanghai 200092China Yangtze Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China Yangtze River Eco-Environmental Engineering Research Center Shanghai InvestigationDesign and Research Institute Co.LTDShanghai 200092China China Construction Third Engineering Bureau First Engineering Co. Ltd.Wuhan 430000China

Sewage sludge in cities of Yangzi River Belt,China,generally exhibits a lower organic content and higher silt contentdue to leakage of drainage system,which caused low bioenergy recovery and carbon emission benefits in conventional anaerobic digestion(CAD).Therefore,this paper is on a pilot scale,a bio-thermophilic pretreatment anaerobic digestion(BTPAD)for low organic sludge(volatile solids(VS)of 4%)was operated with a long-term continuous flow of 200 *** VS degradation rate and CH_(4) yield of BTPAD increased by 19.93%and 53.33%,respectively,compared to those of *** analysis of organic compositions in sludge revealed that BTPAD mainly improved the hydrolysis of proteins in *** analysis of microbial community proportions by high-throughput sequencing revealed that the short-term bio-thermophilic pretreatment was enriched in Clostridiales,Coprothermobacter and Gelria,was capable of hydrolyzing acidified proteins,and provided more volatile fatty acid(VFA)for the subsequent *** combined with fluorescence quantitative polymerase chain reaction(PCR)analysis showed that the number of bacteria with high methanogenic capacity in BTPAD was much higher than that in CAD during the medium temperature digestion stage,indicating that short-term bio-thermophilic pretreatment could provide better methanogenic conditions for ***,the greenhouse gas emission footprint analysis showed that short-term bio-thermophilic pretreatment could reduce the carbon emission of sludge anaerobic digestion system by 19.18%.

关键词： Sludge Anaerobic digestion Bio-thermophilic pretreatment Pilot scale Molecular microbiology Carbon emissions