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肥胖儿童non-HDL-C、remnant cholesterol与亚临床动脉粥样硬化的关系 被引量:4
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作者 焦朝艳 刘戈力 +4 位作者 鲍鹏丽 魏莹 杨箐岩 郑荣秀 赵菁 《天津医科大学学报》 2014年第1期25-28,共4页
目的:了解non-HDL-C和remnant cholesterol与肥胖儿童亚临床动脉粥样硬化(AS)的关系。方法:根据甘油三酯(TG)水平将65例肥胖儿童(肥胖组)分为I组(TG≥2.3 mmol/L)32例,II组(TG<2.3 mmol/L)33例,与肥胖组儿童性别年龄相匹配的正常体... 目的:了解non-HDL-C和remnant cholesterol与肥胖儿童亚临床动脉粥样硬化(AS)的关系。方法:根据甘油三酯(TG)水平将65例肥胖儿童(肥胖组)分为I组(TG≥2.3 mmol/L)32例,II组(TG<2.3 mmol/L)33例,与肥胖组儿童性别年龄相匹配的正常体质量儿童30例为III组(对照组)。比较3组儿童血脂指标,对肥胖组各项血脂指标与血浆致动脉粥样硬化指数(AIP)进行相关性分析,肥胖患儿体质指数、血脂指标与颈动脉内径、内膜-中层厚度(c-IMT)、血流参数进行相关性分析。结果:I组、II组的TG、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、non-HDL-C、remnant cholesterol、AIP均较对照组升高,高密度脂蛋白胆固醇(HDL-C)较对照组降低,且I组的remnant cholesterol、AIP均较II组升高。肥胖组儿童AIP与TG、non-HDL-C、remnant cholesterol呈正相关,与HDL-C呈负相关。37例行颈动脉超声检查的肥胖儿童的c-IMT较正常儿童的增厚。结论:non-HDL-C、remnant cholesterol在肥胖儿童亚临床AS中有重要作用,在肥胖儿童血脂异常的治疗中应关注non-HDL-C、remnant cholesterol的变化。 展开更多
关键词 儿童肥胖 亚临床动脉粥样硬化 non—HDL—C REMNANT CHOLESTEROL 血浆致动脉粥样硬化指数 颈动脉内膜-中层厚度
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Shenqi Fuzheng injection combined with GP chemotherapy in the treatment of advanced non-small cell lung cancer: a meta-analysis 被引量:13
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作者 Qiang Zhang Yi-Huan Fan +2 位作者 Teng Zhang Xiao-Lan Qin Ji-Fang Song 《TMR Integrative Medicine》 2017年第2期68-78,共11页
Objective: To evaluate the clinical efficacy of Shenqi Fuzheng injection combined with gemcitabine plus cisplatin(GP) in the treatment of advanced non-small cell lung cancer (NSCLC). Methods: we performed a syst... Objective: To evaluate the clinical efficacy of Shenqi Fuzheng injection combined with gemcitabine plus cisplatin(GP) in the treatment of advanced non-small cell lung cancer (NSCLC). Methods: we performed a systematicsearch in the electronic databases such as Cochrane Library, Pubmed, Embase, Chinese Journal Full-text Database,Chinese Biomedical Literature Database, Chinese Science and Technology Periodical Full-text Database andWanfang Database up to 30 January 2017. Randomized controlled trials (RCT) of Shenqi Fuzheng Injectioncombined with GP chemotherapy in the treatment of advanced NSCLC were searched, and all the RCTs wereconducted on methodological quality assessment. Data extraction and data analysis were according to standards ofCochrane systematic review. Results: Eight trials were included including a total of 701 patients. Meta-analysisresults: Shenqi Fuzheng injection combined with GP chemotherapy could significantly improve the functionalstatus of patients with NSCLC (OR = 3.44, 95% CI [2.26, 5.25], P 〈 0.0001) and clinical treatment efficacy (OR =(OR = 0.31, 95%CI [0.20, 0.47], P 〈 0.0001. The rate of leukopenia (OR = .31, 95%CI [0.20,0.47], P 〈 0.0001),thrombocytopenia (OR = 0.58, 95%CI [0.37, 0.91], P = 0.020), hemoglobin decline ((OR = 0.31, 95%CI [0.16,0.59], P = 0.0004) and incidence of gastrointestinal reactions (OR = 0.58,P 〈 0.05) could be reduced. Conclusion:Shenqi Fuzheng injection combined with GP chemotherapy in the treatment of advanced NSCLC obtainedsignificantly clinical efficacy. The quality of the literature incorporated is low, the conclusion requires high-qualityresearch to further prove. 展开更多
关键词 Shenqi Fuzheng GP chemotherapy Advanced non - small cell lung cancer Meta analysis
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Analysis of Numerical Results in High Temperature Congealment and Chemistry Non-equilibrium Flow Field
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作者 Hong-tao Zheng Zhi-yong Tan +2 位作者 Hai-ou Sun Chun-liang Zhou Zhi-ming Li 《Journal of Marine Science and Application》 2002年第1期26-34,共9页
Using the air plasma ignition technique, physicochemical process of burning can be accelerated; concentration limit ofretrofires both can be extended; reliability of retrofires and stability of burning can be improved... Using the air plasma ignition technique, physicochemical process of burning can be accelerated; concentration limit ofretrofires both can be extended; reliability of retrofires and stability of burning can be improved. In this paper, using internalequivalent heat area in place of electric are that created Ohm heat, the flow fields of thermodynamic equilibrium chemistry con-gealment and chemistry non-equilibrium in the plasma generator were simulated. The influences of the inlet prerotation angleof air, the inlet total pressure of air and the airflow compression angle of spray nozzle on the temperature on the surface of elec- 展开更多
关键词 plasma GENERATOR CHEMISTRY non - EQUILIBRIUM IGNITION technique numerical calculation
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Turbulent Flow Action of Pulp in Wet - Laid Non - Woven Processes
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作者 程隆棣 黄秀宝 于修业 《Journal of China Textile University(English Edition)》 EI CAS 2000年第3期57-59,共3页
The paper deals with the fluid field of web forming in wet-laid non-woven production.The influence of the turbulent flow on blending fiber and occluded fluid produced in pulp flow has been discussed in theory and prac... The paper deals with the fluid field of web forming in wet-laid non-woven production.The influence of the turbulent flow on blending fiber and occluded fluid produced in pulp flow has been discussed in theory and practice.The suitable use of the imported velocity of pulp is very important in producing wet-laid products of good quality. 展开更多
关键词 WET - laid non - woven fiber PULP FLOW TURBULENT FLOW layer FLUID occluded FLUID .
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Comparing Coordination Abilities of 10-11 Years Old Girls Practicing Basketball and Rhythmic Gymnastic
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作者 Georgi Venelinov Brestnichki 《Journal of Sports Science》 2015年第3期134-137,共4页
The words---coordination, coordination abilities and coordination training are getting more and more popular among the coaches in different sports. The rhythm makes the movement logical, easy and correct done. The pur... The words---coordination, coordination abilities and coordination training are getting more and more popular among the coaches in different sports. The rhythm makes the movement logical, easy and correct done. The purpose of this study is to determine any difference between the coordination abilities of 10-11 years old gifts practicing basketball and rhythmic gymnastics. In that study, we have tested 40 girls at the age of 10-11 years practicing basketball and rhythmic gymnastic. We have tested them by 7 coordination tests. The results from the tests have been calculated in math-statistic methods and we have used descriptive statistic and t-test by Student with guaranteed probability Pt 〉 95 %. Ten-eleven old girls practicing rhythmic gymnastic have advantage against the girls practicing basketball in all 7 tests examining coordination abilities. The girls practicing rhythmic gymnastic, guaranteed by statistic, have better results in the balance and rhythmic abilities than the girls practicing basketball game. That statement is showing us that at this age the rhythmic gymnastic or elements from rhythmic gymnastic should be used for developing balance and rhythmic ability, which are very important for the basketball game. 展开更多
关键词 comparing COORDINATION 10-11 years old GIRLS BASKETBALL rhythmic GYMNASTICS
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CYFRA 21-1 as an early predictor of first line chemotherapy response in advanced non small cell lung cancer
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作者 Kashif Iqbal 《The Chinese-German Journal of Clinical Oncology》 CAS 2007年第3期250-253,共4页
Objective: In an era of ever evolving, promising new therapies for advanced non small cell lung cancer (NSCLC), early predictors of response to therapy, are needed. We evaluated early variations in CYFRA 21-1 serum... Objective: In an era of ever evolving, promising new therapies for advanced non small cell lung cancer (NSCLC), early predictors of response to therapy, are needed. We evaluated early variations in CYFRA 21-1 serum levels of patients with advanced NSCLC receiving first line chemotherapy and correlated the results with objective tumor response. Methods: 29 consecutive, previously untreated, patients of advanced non small cell lung cancer, with measurable disease on CT scan were evaluated. All patients were treated with conventional systemic chemotherapy, although the choice of chemotherapy was left to the discretion of the treating physicians. Serum samples were obtained immediately before the start of 1st and 2nd cycles of chemotherapy. CYFRA 21-1 was measured with an electrochemiluminescense immunoassay on an automatic analyzer (Elecsys 2000; Roche Diagnostics). Response was evaluated using Response evaluation criteria in solid tumors (RECIST) criteria. Results: 10 patients had partial response, 9 patients had stable disease and 9 had progressive disease. None of the patients had complete response. 21/29 (72%) patients had an elevated baseline value of CYFRA 21-1.62% patients (18/29) had a decrease in CYFRA 21-1 after 1 cycle of chemotherapy. The average reduction in the 2nd reading was irrespective of whether baseline value was normal or not. The average reduction was statistically significant (P = 0.002; 95% CI, from 0.8369 to 3.49464; t test). 8 out of 10 (80%) patients with partial response had a reduction in their 2nd reading of. CYFRA (P = 0.019; 95% CI, from 0.81965 to 7.20035; t test) which was significant. We also observed that 6/9 (66%) patients whose disease remains stable also had a decrease in their subsequent reading (P = 0.0106; 95% CI, from -0.44942 to 3.82720; t test), though it was not significant statistically. Although 5 out of 9 (55%) patients, who had an increase in their CYFRA 21-1 level, had progressive disease, but it was not statistically significant (P = 0.537; 95% CI, from -1.20021 to 2.13354; ttest). 14 out of 19 (73%) who either had partial response or had stable disease, had a reduction in their 2nd value of CYFRA 21-1 and was significant statistically (P = 0.004; 95% CI, from 0.74792 to 3.50208; t test). We also observed that except for 1 patient, all patients who had a decrease of 42% or more in their subsequent CYFRA 21-1 level, were those who had either responded to chemotherapy or had stable disease (P = 0.001), which was statistically significant. Conclusion: We can conclude that monitoring of serum marker CYFRA 21-1, early dudng first-line chemotherapy may be a useful prognostic tool for evaluation of early tumor response in patients with advanced NSCLC. 展开更多
关键词 CYFRA 21-1 non small cell lung cancer CHEMOTHERAPY RESPONSE
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MiR-16-5p plays an inhibitory role in human non-small cell lung cancer through Fermitin family member 2
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作者 JUNQI GUO YUN YANG +6 位作者 WEI ZHAO ZHONGHAI YAN XIA YANG YUNFEI YAN RUIMIN HAO JINXIA HU FEI JIAO 《BIOCELL》 SCIE 2021年第3期627-638,共12页
Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are... Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are not to be well studied.Here,we validated that the expression of miR-16-5p was decreased significantly in NSCLC samples and cell lines.The correlation between the clinicopathological features of NSCLC and the miR-16-5p expression showed that the expression of miR-16-5p in non-small cell lung cancer was linked with the advanced TNM stage,positive lymph node metastasis,with short overall survival(OS).Also,a negative correlation between miR-16-5p and Fermitin family member 2(FERMT2)was observed,implying there may be a potential link about their regulation.The hypothesis was further confirmed by in-silico analysis and dual-luciferase reporter assay.Moreover,we demonstrated that the transfections of miR-16-5p mimics could alter some biological characteristics of NSCLC cells remarkably accomplished by the expression variance of FERMT2 in vitro and in vivo assays.Summarily,this study demonstrated that miR-16-5p,as a tumor suppression factor in NSCLC by targeting FERMT2,could serve as one promising biomarker in the prediction for NSCLC patients. 展开更多
关键词 miR-16-5p non–small-cell lung cancer(NSCLC) Fermitin family member 2(FERMT2) APOPTOSIS INVASION Overall survival(OS)
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40 Hz节律刺激对阿尔茨海默病和认知功能的影响
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作者 赵娜 何生 施立楠 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2024年第10期2405-2417,共13页
阿尔茨海默病(Alzheimer’s disease,AD)等神经退行性疾病对人类健康造成了严重威胁,目前仍缺乏有效的治疗方法。近期,通过改进脑电异常的伽马节律网络来干预AD,为改善其疾病症状带来了新的希望。本文综述了近年来关于40 Hz节律刺激对A... 阿尔茨海默病(Alzheimer’s disease,AD)等神经退行性疾病对人类健康造成了严重威胁,目前仍缺乏有效的治疗方法。近期,通过改进脑电异常的伽马节律网络来干预AD,为改善其疾病症状带来了新的希望。本文综述了近年来关于40 Hz节律刺激对AD病理和认知功能影响的研究进展。研究表明,40 Hz节律刺激能够显著改善AD小鼠模型的病理特征和人类AD患者的认知能力。此外,40 Hz节律刺激对健康人的认知功能有一定的提升作用。本文讨论了40 Hz节律刺激的神经同步原理和作用机制,并评估了其作为一种非侵入式治疗手段的安全性。最后,分析了当前研究的局限性,并展望了未来的研究方向。总之,尽管40 Hz节律刺激对健康人的认知影响有限,但显示出作为AD治疗手段的潜力,未来需要进一步研究以确认其在临床应用中的有效性和作用机制。 展开更多
关键词 阿尔茨海默病 40 Hz节律刺激 非入侵式治疗 神经振荡-外界节律同步化现象 神经机制 认知功能
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N-甲基-D-天门冬氨酸和非N-甲基-D-天门冬氨酸类受体在新生大鼠延髓脑片呼吸节律性放电中的作用
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作者 潘秉兴 吴中海 王宁黔 《第一军医大学学报》 CSCD 北大核心 2001年第4期251-254,共4页
目的 探讨N-基-D-天门冬氨酸(N-methyl-D-aspartate,NMDA)和非NMDA类受体在基本呼吸节律发生和调 节中的作用。方法 在新生SD大鼠离休延髓脑片上记录舌下神经的呼吸节律性放电活动,在改良的Krebs液中加入兴 奋性氨... 目的 探讨N-基-D-天门冬氨酸(N-methyl-D-aspartate,NMDA)和非NMDA类受体在基本呼吸节律发生和调 节中的作用。方法 在新生SD大鼠离休延髓脑片上记录舌下神经的呼吸节律性放电活动,在改良的Krebs液中加入兴 奋性氨基酸类递质及相应的拮抗剂,观察其RRDA的影响。结果 使用非NMDA受体激动剂海人酸(Kainic acid.KA) 后,可见呼吸周期及呼气时间有所延长, NMDA受体激动剂对呼吸活动则没有明显影响(P>0.1);相应的拮抗剂6-氰基 -7-硝基喹恶啉土卫四(6,7-dinitroquinoxaline-2,3-dione,DNQX)和2-氨基磷酸戊酸(D-2-amino-5-phosphonopentanoic, AP5)均可使放电频率和积分幅值明显降低吸气时间显著缩短(P<0.01),DNQX同时可致呼吸周期和呼气时间明显缩短 (P<0.05)。结论 在哺乳动物基本呼吸节律的产生和调节中,NMDA类受体主要对呼吸活动的强度产生调节作用;而非 NMDA类受体不仅可以影响呼吸的强度,同时对呼吸的频率也发挥调节作用。 展开更多
关键词 N-甲基-D-天门冬氨酸受体 非N-甲基-D-天门冬氨酸受体 延髓脑片 节律性放电 呼吸节律 新生大鼠
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节奏的“非韵律面相”--新诗节奏三层次理论论述之二(上) 被引量:1
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作者 李章斌 《常熟理工学院学报》 2022年第1期1-9,共9页
在以自由体为主的新诗中,既存在一种以重复、对称为基础的,较有灵活性的韵律(“非格律韵律”),也存在节奏的“非韵律面相”问题,即种种不以重复和同一性为基础的节奏控制方式。本文讨论的是节奏的“边界”,即一个节奏片段绵延的时间长... 在以自由体为主的新诗中,既存在一种以重复、对称为基础的,较有灵活性的韵律(“非格律韵律”),也存在节奏的“非韵律面相”问题,即种种不以重复和同一性为基础的节奏控制方式。本文讨论的是节奏的“边界”,即一个节奏片段绵延的时间长度和范围。节奏边界操控的方式包括句子长度与内部的句法构造、标点、空格、分行、分节等。节奏的边界不仅形塑了一首诗基本的节奏外形,也内含了其吞气吐气的方式,还涉及意象的呈现、情感的波动起伏、诗歌悬念的展开等诗艺的诸多层面,是表现诗人的气质和个性的重要手段,也鲜明地体现出节奏的时间性本质。 展开更多
关键词 节奏 “非韵律面相” 边界 时间性
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FAREY SEQUENCE OF NONLINEAR DIFFERENTIAL DYNAMIC SYSTEM IN TWO DIMENSIONS 被引量:1
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作者 H. Q. Jin and S. N. Xu Shenyang Institute of Technology , Shenyang 110015 , China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1999年第5期1234-1236,共3页
In this paper , through the discrim ination of Farey sequence in the forced Brusselator withweak coupling , it is proved that there is a topological translation fro m a nonlinear differen tial system ( limit cycle)... In this paper , through the discrim ination of Farey sequence in the forced Brusselator withweak coupling , it is proved that there is a topological translation fro m a nonlinear differen tial system ( limit cycle) to the circle m ap . 展开更多
关键词 non - linearity Farey sequence phase lock CHAOS
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Ways to Overcome Anxiety in the English Listening Class in College (SUN JING-YU KE SU-FEN)
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作者 孙晶玉 柯素芬 《呼伦贝尔学院学报》 1999年第1期74-77,87,共5页
In my ten-yeat experience of tenching English as major in college , I feel that students experience more difficulties in listening lessons than in other lessons. What, then, prevents students from achieving success in... In my ten-yeat experience of tenching English as major in college , I feel that students experience more difficulties in listening lessons than in other lessons. What, then, prevents students from achieving success in the listening class? I suggest that anxiety is one of the major factors, which interferes with students listening comprehension. And I would agree with writers such as Gardner and Horwitz et al. (1991)that anxiety may impede learner’s ability to perform successfully in all aspects of learning a foreign language. I feet it is particularly significant for listening. 展开更多
关键词 LISTENING anxiety creation of non - ANXIETY environment skills and process focus COUNSELLING corner exposure to authentic English
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重复经颅磁刺激联合节律性感觉提示训练对老年帕金森病患者肢体功能及非运动症状的影响
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作者 闵瑞雪 兰玉亭 《反射疗法与康复医学》 2023年第4期62-65,共4页
目的探讨针对老年帕金森病(PD)患者实施重复经颅磁刺激联合节律性感觉提示训练的效果.方法选择2021年10月—2022年7月我院收治的86例老年PD患者为研究对象,按随机数字表法分为两组.两组均采用药物进行治疗,对照组(n=43)实施常规康复训练... 目的探讨针对老年帕金森病(PD)患者实施重复经颅磁刺激联合节律性感觉提示训练的效果.方法选择2021年10月—2022年7月我院收治的86例老年PD患者为研究对象,按随机数字表法分为两组.两组均采用药物进行治疗,对照组(n=43)实施常规康复训练,观察组(n=43)实施重复经颅磁刺激联合节律性感觉提示训练,均持续干预4周.对比两组肢体功能、非运动症状及康复情况.结果观察组干预后Fugl-Meyer运动功能评定量表中的上肢、下肢评分分别为(52.56±5.06)分、(28.72±2.85)分,均高于对照组的(42.46±4.18)分、(23.26±2.79)分,组间差异有统计学意义(P<0.05);观察组干预后非运动症状问卷评分为(14.25±2.05)分,低于对照组的(17.28±2.21)分,差异有统计学意义(P<0.05);观察组干预后统一帕金森病综合评定量表中的日常生活活动、行为与情绪及运动能力评分分别为(20.05±2.23)分、(5.22±0.98)分、(29.96±2.39)分,均低于对照组的(25.25±2.47)分、(6.06±1.11)分、(32.36±2.45)分,组间差异有统计学意义(P<0.05).结论重复经颅磁刺激联合节律性感觉提示训练在老年PD患者中具有良好的应用效果,利于改善其肢体功能与非运动症状,促进病情康复. 展开更多
关键词 帕金森病 重复经颅磁刺激 节律性感觉提示训练 肢体功能 非运动症状
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蓝藻生物节律性分子调控机制的研究进展 被引量:5
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作者 李青雁 庞羽彤 +4 位作者 李小龙 周飞飞 张芳 霍宇鹏 赵宇玮 《基因组学与应用生物学》 CAS CSCD 北大核心 2013年第5期677-684,共8页
生物钟现象是一种普遍存在于生物界细胞的内源节律性保持机制。生物钟机制的存在可以使生物体的代谢行为产生并维持以24 h为周期的昼夜节律,从而更好地适应于地球自转所产生的环境条件昼夜间节律性变化。蓝藻是目前生物钟分子机制研究... 生物钟现象是一种普遍存在于生物界细胞的内源节律性保持机制。生物钟机制的存在可以使生物体的代谢行为产生并维持以24 h为周期的昼夜节律,从而更好地适应于地球自转所产生的环境条件昼夜间节律性变化。蓝藻是目前生物钟分子机制研究中的模式生物,其依赖于kai基因家族成员的核心生物钟调控模式已经被众多研究者详细阐明。蓝藻生物钟的核心振荡器是由蓝藻kaiA/B/C的编码产物来调控的,Kai蛋白的表达模式具有节律性。KaiC蛋白磷酸化状态的节律性循环及输入、输出途径相关组成蛋白的翻译后修饰状态节律性循环共同组成其反馈回路,负责维持生物钟节律性振荡的持续进行并与环境周期保持同步。传统的蓝藻生物钟分子机制模型认为,节律性表达基因翻译产物的转录/翻译负反馈抑制环是生物节律性维持和输出的关键。遗憾的是,在其它物种生物钟分子机制研究中未发现由kai基因家族成员同源基因组成的节律性标签,这表明以kaiA/B/C为核心振荡器的生物钟系统并不是一种跨物种保守的生物钟系统。近期,人们发现非转录/翻译依赖的振荡器(NTO)也具有成为生物节律性产生和维持的"源动力"的可能。过氧化物氧化还原酶(PRX)氧化还原状态节律性是第一种被报道的跨物种保守的NTO节律性标签,这也日渐成为蓝藻生物钟分子机制研究新的热点。 展开更多
关键词 蓝藻 节律性 钟基因 非转录依赖的振荡器 转录-翻译负反馈回路
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氨基酸与钠离子非共价键相互作用的电喷雾质谱研究 被引量:3
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作者 吴胜明 杨松成 +6 位作者 王杰 王鸿丽 刘炳玉 李爱玲 何昆 魏开华 张学敏 《分析测试学报》 CAS CSCD 北大核心 2004年第z1期66-67,共2页
  实验研究中常常观察到钠离子与一些多肽或蛋白质有较强的非共价键结合能力,这种非共价键相互作用可能与生物的一些功能和活性有关.为了进一步了解这一结合作用,我们应用电喷雾质谱研究了常见的20种氨基酸与钠离子在溶液中的非共价...   实验研究中常常观察到钠离子与一些多肽或蛋白质有较强的非共价键结合能力,这种非共价键相互作用可能与生物的一些功能和活性有关.为了进一步了解这一结合作用,我们应用电喷雾质谱研究了常见的20种氨基酸与钠离子在溶液中的非共价键相互作用.实验研究中发现脯氨酸和苯丙胺酸与钠离子有较强的非共价键结合能力.…… 展开更多
关键词 Sodium ion Amino acids non - covalent interaction ESI - MS
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硅酸盐固溶体矿物中组分的非韵律型空间分布及其形成过程的动力学机制 被引量:1
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作者 王江海 吴金平 《矿物学报》 CAS CSCD 北大核心 1992年第1期1-6,共6页
本文探讨了固溶体矿物中组分非韵律型空间分布的两种局域平衡结晶动力学模型: (1) 当固相中无扩散,而熔体中完全混合时,结晶作用满足如下模型: dx/ed=(x-f)/(1-e) (2) 当固相中无扩散,而熔体中仅有扩散时,结晶作用满足如下模型:提出了... 本文探讨了固溶体矿物中组分非韵律型空间分布的两种局域平衡结晶动力学模型: (1) 当固相中无扩散,而熔体中完全混合时,结晶作用满足如下模型: dx/ed=(x-f)/(1-e) (2) 当固相中无扩散,而熔体中仅有扩散时,结晶作用满足如下模型:提出了非韵律型组分空间分布的成因主要归因子岩浆的非平衡结晶和结晶过程中的动力学行为。 展开更多
关键词 硅酸盐 固溶体 矿物 空间分布
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昆明市区小叶榕对冬季非节律性低温的生理反应 被引量:3
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作者 王莎 赵林森 《林业调查规划》 2006年第5期110-113,共4页
将本土树种球花石楠作对照,以昆明市区行道树种小叶榕为主要研究对象,通过对其叶片5项生理指标在冬季非节律性低温发生前后的变化测定,分析其耐寒特性。测定指标显示,日最高气温由18℃骤降到4℃以及由24℃骤降到6℃时,小叶榕叶片中叶绿... 将本土树种球花石楠作对照,以昆明市区行道树种小叶榕为主要研究对象,通过对其叶片5项生理指标在冬季非节律性低温发生前后的变化测定,分析其耐寒特性。测定指标显示,日最高气温由18℃骤降到4℃以及由24℃骤降到6℃时,小叶榕叶片中叶绿素含量以及叶绿素荧光Fv/Fm和Fv/Fo值均有所下降;而其叶片含水量、相对电导率和游离辅氨酸含量明显上升。综合分析表明,小叶榕比对照树种球花石楠的抗寒性弱,非节律性低温可能是昆明市区小叶榕正常越冬的主要限制性因素。 展开更多
关键词 小叶榕 球花石楠 非节律性 低温 生理 抗性 昆明市区
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基于逆流水步距组织分层无节奏流水施工 被引量:2
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作者 吴韬 张文振 +2 位作者 张劼 王艳华 何小雨 《合肥学院学报(自然科学版)》 2014年第1期92-96,共5页
基于不分层时流水工期的定义公式,考虑了组织无节奏流水施工的关键约束条件,通过引入逆流水步距参数,推导出分层时无节奏流水的参数化工期模型,并以某5栋两层的别墅群为例编制了进度计划横道图.结果表明:该参数化工期模型可有效应用于... 基于不分层时流水工期的定义公式,考虑了组织无节奏流水施工的关键约束条件,通过引入逆流水步距参数,推导出分层时无节奏流水的参数化工期模型,并以某5栋两层的别墅群为例编制了进度计划横道图.结果表明:该参数化工期模型可有效应用于分层时的无节奏流水,且与流水工期定义公式的参数结构吻合一致;在施工段数大于施工过程数的前提下,该模型有效表达了主导施工过程连续作业的关键约束性质;在层间工程量相同的前提下,该模型较好地体现出流水施工的节奏性、均衡性及专业性等特点. 展开更多
关键词 无节奏流水 施工层 流水工期 参数化模型 逆流水步距
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潘特考夫斯基法在无节奏流水施工中的应用 被引量:4
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作者 于英霞 郑志辉 《山西建筑》 2004年第18期90-91,共2页
就潘特考夫斯基法的原理进行了剖析 ,并用实例说明了其在组织无节奏流水施工中的应用 ,指出无节奏性流水是流水施工的普遍形式 ,在组织无节奏性流水时 。
关键词 潘特考夫斯基法 组织 无节奏流水 施工
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浅析西方20世纪的作曲技法
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作者 董伟 《吉林艺术学院学报》 2004年第1期9-11,共3页
本文对西方20世纪的作曲技法进行了简明的分析。通过实际音乐作品对旋律、和声、调性、织体、节奏、曲式等方面进行了总结,同时也阐明了笔者自己的观点和看法。
关键词 无旋律音乐 绝对无调性 线型对位织体 纵横同步思维
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