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基于暂态时-频特征差异的配电网高阻接地故障识别方法 被引量:1
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作者 史鸿飞 邓丰 +4 位作者 钟航 钟逸涵 蒋素霞 李鑫瑜 陈依林 《中国电机工程学报》 EI CSCD 北大核心 2024年第16期6455-6469,I0014,共16页
高阻接地故障发生时,故障特征微弱,传统故障识别方法存在特征提取困难、阈值选取灵活性较差的技术瓶颈,导致极端故障场景下出现漏判。为此,提出基于暂态时-频特征差异的配电网高阻接地故障识别方法。首先,结合小波包香农熵量化分析高阻... 高阻接地故障发生时,故障特征微弱,传统故障识别方法存在特征提取困难、阈值选取灵活性较差的技术瓶颈,导致极端故障场景下出现漏判。为此,提出基于暂态时-频特征差异的配电网高阻接地故障识别方法。首先,结合小波包香农熵量化分析高阻接地故障与正常扰动工况暂态信号的时频分布,发现二者存在显著差异:频域上,扰动工况信号的能量集中于低频,而高阻故障信号能量分布相对均匀;时域上,扰动工况信号能量集中于时间窗的前半段,高阻故障信号能量在整个时间窗内均匀分布。在此基础上,以暂态信号时-频域波形作为输入样本,将传统卷积神经网络(convolutional neural networks,CNN)模型中的softmax分类器改进为支持向量机(support vector machine,SVM)分类器,构建适应配电网高阻接地故障识别小样本场景下的CNN-SVM复合分类模型,以卷积层作为特征提取器,以SVM作为分类器,实现高阻接地故障识别。最后,为论证所提方法具有强适应性的内在原因,利用LIME可解释性分析算法可视化展现模型训练过程中的高关注度区域,从模型分类原理层面证明所提方法不受各种故障条件的影响,克服了传统故障识别方法在极端故障场景下出现漏判的缺陷,能准确识别配电线路末端10 kΩ高阻接地故障。 展开更多
关键词 配电网 高阻接地故障 -频特征 传统卷积神经网络-支持向量机 lime可解释性分析
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基于F-B NCP函数的可行QP-free算法
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作者 朱笑荣 《泰山学院学报》 2012年第3期43-47,共5页
本文得到一种可行QP-free算法,引入ε-有效集策略使得每次迭代只需求解规模较小的线性方程组得到迭代方向,且方程组只包含工作集中的约束,其规模较原问题大大减小,同时不进行弧搜索,从而降低了运算量.
关键词 QP—free算法 可行性 ε-有效集
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Prediction of Free Lime Content in Cement Clinker Based on RBF Neural Network 被引量:5
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作者 YUAN Jingling ZHONG Luo +1 位作者 DU nongfu TAO Haizheng 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第1期187-190,共4页
Considering the fact that free calcium oxide content is an important parameter to evaluate the quality of cement clinker, it is very significant to predict the change of free calcium oxide content through adjusting th... Considering the fact that free calcium oxide content is an important parameter to evaluate the quality of cement clinker, it is very significant to predict the change of free calcium oxide content through adjusting the parameters of processing technique. In fact, the making process of cement clinker is very complex. Therefore, it is very difficult to describe this relationship using the conventional mathematical methods. Using several models, i e, linear regression model, nonlinear regression model, Back Propagation neural network model, and Radial Basis Function (RBF) neural network model, we investigated the possibility to predict the free calcium oxide content according to selected parameters of the production process. The results indicate that RBF neural network model can predict the free lime content with the highest precision (1.3%) among all the models. 展开更多
关键词 RBF neural network cement clinker free lime content
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Process for improving the ladle free- opening rate for high aluminum steel in continuous casting 被引量:3
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作者 LIU Junzhan ZHOU Tongjun LUO Hui 《Baosteel Technical Research》 CAS 2015年第1期42-45,共4页
Steel 20Mn23AlV is a type of high aluminum steel with a very low ladle free-opening rate. The aluminum composition of 20Mn23AlV ranges from 1.6% to 2.45% ,which is significantly higher than other types of steel. Accor... Steel 20Mn23AlV is a type of high aluminum steel with a very low ladle free-opening rate. The aluminum composition of 20Mn23AlV ranges from 1.6% to 2.45% ,which is significantly higher than other types of steel. According to the real condition of 40 t ladle in steel-making plant of Baosteel Special Steel Company, previous works show that the key factors affecting the ladle free-opening rate of high aluminum steel in continuous casting are:sand material, accessories baking, ladle nozzle cleaning, the process and amount of adding sand, and the rate of argon stirring during refining. Therefore, improving the ladle filler sand quality, baking all of the raw materials, controlling the addition of ladle filler sand, cleaning the ladle nozzle, and optimizing argon stirring during the refining process can resolve the problem of a low ladle free-opening rate of high aluminum steel caused by the long ladle time of liquid steel. 展开更多
关键词 continuous casting high aluminum steel LADLE free - opening rate
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Development of Debris-free Laser Plasma Sources for EUV Lithography in CIOMP 被引量:1
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作者 CHEN Bo, NI Qi liang,CAO Jian lin (State Key Laboratory of Applied Optics,Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130022, China) 《光学精密工程》 EI CAS CSCD 2001年第5期442-445,共4页
We have been developing debris-free laser plasma sources for EUV lithography since 1996. Two types of debris-free sources, such as cryogenic target and gas-puff target laser plasma sources, were designed and built up ... We have been developing debris-free laser plasma sources for EUV lithography since 1996. Two types of debris-free sources, such as cryogenic target and gas-puff target laser plasma sources, were designed and built up in CIOMP. EUV radiation spectra of the sources with a variety of targets have been obtained by different ways. 展开更多
关键词 EUV LITHOGRAPHY laser plasma DEBRIS - free CRYOGENIC TARGET gas - PUFF TARGET
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EXACT SOLUTION FOR RECTANGULAR SLAB WITH THREE EDGES SIMPLY-SUPPORTED AND OTHER FREE
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作者 YU TENGHAIDepartment of Mathematics 《内江师范学院学报》 1996年第2期1-7,共7页
In this paper,we give all-sided pastic analysis of the rectangular slab with three edges simply-supported and other free.Here we discuss the following four cases:(1)The uniformly distributedload over the area a slab.(... In this paper,we give all-sided pastic analysis of the rectangular slab with three edges simply-supported and other free.Here we discuss the following four cases:(1)The uniformly distributedload over the area a slab.(2).A concentrated load act at midpoint of free edges slab.(3)A concen-trated load act at the center a slab.(4)The line load act along free edge of slab. 展开更多
关键词 The RECTANGULAR SLAB with three EDGES simply - SUPPORTED and OTHER free have wide the use value. But up to now only find the EXACT solution that a concentrated load act at midpoint of free edye a slab. The EXACT solution of OTHER support force
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Influence of 10-(6-plastoquinonyl) decyltriphenylphosphonium on free-radical homeostasis in the heart and blood serum of rats with streptozotocin-induced hyperglycemia
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作者 Aleksander A Agarkov Tatyana N Popova Yana G Boltysheva 《World Journal of Diabetes》 2019年第12期546-559,共14页
BACKGROUND It is known that under conditions of tissue tolerance to insulin,observed during type 2 diabetes mellitus(DM2),there is an increased production of reactive oxygen species.Moreover,the free radicals can init... BACKGROUND It is known that under conditions of tissue tolerance to insulin,observed during type 2 diabetes mellitus(DM2),there is an increased production of reactive oxygen species.Moreover,the free radicals can initiate lipid peroxidation(LPO)in lipoprotein particles.The concentration of LPO products can influence the state of insulin receptors,repressing their hormone connection activity,which is expressed as a reduction of the glucose consumption by cells.It is possible that reduction in glucose concentration during administration of 10-(6-plastoquinonyl)decyltriphenylphosphonium(SkQ1)to rats with DM2 may be related to the antioxidant properties of this substance.AIM To establish the influence of SkQ1 on free-radical homeostasis in the heart and blood serum of rats with streptozotocin-induced hyperglycemia.METHODS To induce hyperglycemia,rats were fed a high-fat diet for 1 mo and then administered two intra-abdominal injections of streptozotocin with a 7-d interval at a 30 mg/kg of animal weight dose with citrate buffer equal to pH 4.4.SkQ1 solution was administered intraperitoneally at a 1250 nmol/kg dose per day.Tissue samples were taken from control animals,animals with experimental hyperglycemia,rats with streptozotocin-induced glycemia that were administered SkQ1 solution,animals housed under standard vivarium conditions that were administered SkQ1,rats that were administered intraperitoneally citrate buffer equal to pH 4.4 once a week during 2 wk after 1-mo high-fat diet,and animals that were administered intraperitoneally with appropriate amount of solution without SkQ1(98%ethanol diluted eight times with normal saline solution).To determine the intensity of free radical oxidation and total antioxidant activity,we used the biochemiluminescence method.Aconitate hydratase(AH),superoxide dismutase,and catalase activities were estimated using the Hitachi U-1900 spectrophotometer supplied with software.The amount of citrate was determined by means of the Natelson method.Real-time polymerase chain reaction was carried out using an amplifier ANK-32.RESULTS It was found that the mitochondrial-directed antioxidant elicits decrease of biochemiluminescence parameter values that increase by pathology as well as the levels of primary products of LPO,such as diene conjugates and carbonyl compounds,which indicate intensity of free radical oxidation.At the same time,the activity of AH,considered a crucial target of free radicals,which decreased during experimental hyperglycemia,increased.Apparently,increasing activity of AH influenced the speed of citrate utilization,whose concentration decreased after administering SkQ1 by pathology.Moreover,the previously applied antioxidant during hyperglycemia influenced the rate of antioxidant system mobilization.Thus,superoxide dismutase and catalase activity,as well as the level of gene transcript under influence of SkQ1 at pathology,were changing to the direction of control groups values.CONCLUSION According to the results of performed research,SkQ1 can be considered a promising addition to be included in antioxidant therapy of DM2. 展开更多
关键词 Diabetes mellitus free radical oxidation ANTIOXIDANTS 10-(6-plastoquinonyl)decyltriphenylphosphonium
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淤泥-石灰-粉煤灰免烧砖制备与性能研究 被引量:11
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作者 项建国 陈树东 +1 位作者 佘伟 蒋宁 《硅酸盐通报》 CAS CSCD 北大核心 2014年第10期2706-2709,共4页
本文系统研究了石灰掺量对淤泥-石灰免烧砖强度和耐水性能影响规律,在此基础上探讨了粉煤灰增强相掺量对淤泥-石灰-粉煤灰系统免烧砖的强度和耐水性影响,优化了淤泥-石灰-粉煤灰免烧砖配合比。结果表明:淤泥-石灰系统中,石灰掺量30%-40... 本文系统研究了石灰掺量对淤泥-石灰免烧砖强度和耐水性能影响规律,在此基础上探讨了粉煤灰增强相掺量对淤泥-石灰-粉煤灰系统免烧砖的强度和耐水性影响,优化了淤泥-石灰-粉煤灰免烧砖配合比。结果表明:淤泥-石灰系统中,石灰掺量30%-40%时免烧砖强度最高;固定石灰掺量在30%时,粉煤灰掺量50%时,免烧砖强度高达15 MPa,耐水性能也最优。 展开更多
关键词 淤泥 免烧砖 石灰 粉煤灰 耐水性
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高钙粉煤灰中f-CaO对砂浆收缩的补偿作用 被引量:12
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作者 严捍东 《工业建筑》 CSCD 北大核心 2002年第4期43-44,57,共3页
通过对高钙粉煤灰水泥砂浆和低钙粉煤灰水泥砂浆干燥收缩和自生收缩的系统试验和比较分析 ,发现高钙粉煤灰中的f CaO水化产生的膨胀可补偿砂浆的干燥收缩和自生收缩 ,对低水胶比水泥基材料自生收缩的补偿作用更加明显。
关键词 高钙粉煤灰 游离氧化钙 高性能水泥基材料 干燥收缩 砂浆 收缩 补偿作用
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赤泥-熟料体系的水化过程 被引量:1
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作者 张彦娜 潘志华 《混凝土》 CAS CSCD 北大核心 2009年第10期43-46,共4页
采用常规的化学分析方法对赤泥-熟料体系水化过程中液相钙离子溶出、结合水以及水化样品含Ca(OH)2随龄期的变化的跟踪测定结果表明:赤泥-熟料体系的水化硬化过程中赤泥中的组分与硅酸盐水泥水化后放出的氢氧化钙之间发生了火山灰反应;60... 采用常规的化学分析方法对赤泥-熟料体系水化过程中液相钙离子溶出、结合水以及水化样品含Ca(OH)2随龄期的变化的跟踪测定结果表明:赤泥-熟料体系的水化硬化过程中赤泥中的组分与硅酸盐水泥水化后放出的氢氧化钙之间发生了火山灰反应;600℃加热处理对赤泥产生明显的活化作用。 展开更多
关键词 赤泥 钙离子溶出量 结合水量 游离石灰含量
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混凝土中离散分布的游离氧化钙潜在危害的检测推断
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作者 李绍鹏 蒋峥瑾 +1 位作者 蒋震 黄政宇 《新型建筑材料》 2024年第8期90-93,106,共5页
常用于测试游离氧化钙(f-CaO)对混凝土潜在危害的方法包括薄片和芯样试件沸煮测试等,但由于试件体量较小,对离散分布在混凝土中的f-CaO潜在危害测试存在较大偶然性。以某项目实体混凝土墙、板为研究对象,通过沸煮实验,从外观、厚度、超... 常用于测试游离氧化钙(f-CaO)对混凝土潜在危害的方法包括薄片和芯样试件沸煮测试等,但由于试件体量较小,对离散分布在混凝土中的f-CaO潜在危害测试存在较大偶然性。以某项目实体混凝土墙、板为研究对象,通过沸煮实验,从外观、厚度、超声波声时、抗压强度多方面对实体混凝土中混入过烧石灰对混凝土质量影响进行测试推断。结果表明:采用沸煮前后外观、厚度、超声波声时、抗压强度多方面测试的结果更全面、准确,对相关事故的防控以及质量检测具有一定参考意义。 展开更多
关键词 游离氧化钙 过烧石灰 沸煮试验 实体混凝土 质量检测
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(K1,4;2)-图的闭包和周长 被引量:1
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作者 赵海霞 马巧灵 张苏梅 《山东师范大学学报(自然科学版)》 CAS 2010年第1期42-44,共3页
针对(K1,4;2)-图这一新的图类,证明了以下结论:1)设G是δ≥5且K1∨P4-free的(K1,4;2)-图,则c(G)=c(cl(G));2)设G是δ≥5且T3-free的(K1,4;2)-图,则c(G)=c(cl(G)).
关键词 闭包 (K1 p q)- HAMILTON图 F—free 局部连通点
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铅锌矿无石灰分支快速浮选回收铅
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作者 苏振华 刘兵 +3 位作者 钟旭群 周志国 杨林源 廖红灯 《矿冶》 CAS 2024年第3期416-422,437,共8页
广西盘龙铅锌矿中硫化铅矿物整体嵌布粒度细小,次生泥质高,采用传统的高碱药剂制度产出的铅精矿中铅回收率远低于硫化铅理论回收率,损失在锌尾矿中的铅较多。对原矿和尾矿进行化学成分、物相和筛析分析,并对比研究高碱体系和不添加石灰... 广西盘龙铅锌矿中硫化铅矿物整体嵌布粒度细小,次生泥质高,采用传统的高碱药剂制度产出的铅精矿中铅回收率远低于硫化铅理论回收率,损失在锌尾矿中的铅较多。对原矿和尾矿进行化学成分、物相和筛析分析,并对比研究高碱体系和不添加石灰的无石灰浮选体系下的铅浮选动力学和闭路试验结果。结果表明,铅尾矿中损失的铅矿物中含有部分粒径为19μm以下的单体方铅矿;采用分支快速浮选工艺对盘龙铅锌矿矿石进行浮选试验研究可优化盘龙铅锌矿选矿指标,减少微细粒方铅矿矿物的流失;相较于原来的高碱浮选体系,无石灰浮选体系浮选所得铅精矿中铅回收率可提高8.07个百分点,-19μm部分铅金属损失率降低28.57个百分点;采用分支快速浮选工艺可有效提高微细粒方铅矿的浮选回收率。 展开更多
关键词 硫化铅锌矿 微细粒 浮选工艺 高碱体系 无石灰体系 分支快速浮选 浮选动力学
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(K_(1,4);2)-图的3-闭包中的路 被引量:1
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作者 赵海霞 马巧灵 张苏梅 《科学技术与工程》 2010年第6期1333-1336,共4页
对(K1,4;2)-图,证明它的3-闭包的一个性质。G为{K1∨P5,T3}-free或K1∨P4-free的(K1,4;2)图,x,a,b为G中不同三点,x为G中局部3-连通的适宜点,G′由G在点x局部完备所得。若G′中有长为l的(a,b)-路,则G中有长为l的(a,b)-路。
关键词 k-闭包 (K1 P q)- F—free 局部k-连通图
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中国-东盟博览会对CAFTA建设的影响 被引量:1
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作者 周苹 《对外经贸实务》 北大核心 2009年第7期78-81,共4页
一、中国-东盟博览会概述 中国-东盟博览会是推动中国-东盟自由贸易区(China-AS—EAN Free Trade Area,以下简称CAFTA)建设的实质行动。2003年10月在第七次中国-东盟领导人会议上,中国国务院总理温家宝建议,从2004年起每年在中国... 一、中国-东盟博览会概述 中国-东盟博览会是推动中国-东盟自由贸易区(China-AS—EAN Free Trade Area,以下简称CAFTA)建设的实质行动。2003年10月在第七次中国-东盟领导人会议上,中国国务院总理温家宝建议,从2004年起每年在中国广西南宁举办中国-东盟博览会,同时建议同期举办中国-东盟商务与投资峰会。这一建议,得到了各国领导人的普遍欢迎和响应。 展开更多
关键词 中国-东盟博览会 CAFTA 中国-东盟自由贸易区 领导人会议 国务院总理 free EAN 温家宝
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Synthesis of Wax Esters by Lipase-catalyzed Esterification with Immobilized Lipase from Candida sp. 99-125 被引量:8
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作者 邓利 王晓静 +4 位作者 聂开立 王芳 刘军峰 王璞 谭天伟 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2011年第6期978-982,共5页
Wax esters were synthesized in a solvent free system catalyzed by immobilized lipase from Candida sp. 99-125, with oleic acid and cetyl alcohol. The effects of substrate molar ratio, lipase dosage and water removal we... Wax esters were synthesized in a solvent free system catalyzed by immobilized lipase from Candida sp. 99-125, with oleic acid and cetyl alcohol. The effects of substrate molar ratio, lipase dosage and water removal were investigated in a 50 ml flask incubated in a thermostatic cultivation cabinet. The optimized conditions were: temperature 40 ℃, shaking at 170 r·min-1, acid/alcohol molar ratio 1:0.9, lipase dosage in 10% (by mass) of oleic acid, and open reaction for water removal. As a result, the conversion rate reached 98% for reaction of 8 h. The volume of reactor was scaled up to 1 L three-neck flask. The optimized parameters were: 200 r·min-1 agitation speed, 2.5% (by mass) lipase dosage, others were the same as the parameters described above. The conversion rate reached 95% for reaction of 24 h. The lipase retained 46% conversion rate after reuse for 6, 7 batches. The products were purified by removing remained cetyl alcohol and fatty acids with ethanol and saturated sodium carbonate so-lution, respectively. The purity of the wax ester, cetyl oleate, was 96%. The physical and chemical properties of cetyl oleate were tested and compared with those of jojoba oil. The results show that the product cetyl oleate has great potential to use as the substitute of natural jojoba oil. 展开更多
关键词 solvent free system Candida sp. 99-125 LIPASE wax ester
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Protective effects of 5,4'-dihydroxy-3',5'- dimethoxy-7-O-β-D -glucopyranosyloxy-flavone on experimental hepatic injury 被引量:3
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作者 Dong-HuiXu Xue-TingMei +3 位作者 YingChen Yan-MeiLi Jun-YiLv Shi-BoXu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第12期1764-1768,共5页
AIM: To investigate the pharmacological effects of rice flavone (5,4'-dihydroxy-3',5'-dimethoxy-7-0-β-D-glucopyranosyloxy-flavone, RF) separated from panicle-differentiating to flowing rice on rat experim... AIM: To investigate the pharmacological effects of rice flavone (5,4'-dihydroxy-3',5'-dimethoxy-7-0-β-D-glucopyranosyloxy-flavone, RF) separated from panicle-differentiating to flowing rice on rat experimental hepatic injury. METHODS: Models of rat acute hepatic injury induced by carbon tetrachloride (CCl4) administration, rat hepatic fibrosis induced by thioacetamide, injury of primary cultured rat hepatocytes induced by CCl4, respectively, were established. After treated with RF, content of serum alanine transaminase (ALT), aspartate aminotransferase (AST) and albumin (Alb), hyaluronic acid (HA), the activity of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and hydroxyproline (Hyp) were measured and liver tissue was observed pathologically by hematoxylin-eosin (HE) staining. Effects of RF on pathological changes, function index, enzyme of scavenging free radicals and blood rheology were evaluated. RESULTS: In model of rat acute hepatic injury induced by CCI4, RF can significantly decrease the contents of serum ALT, AST, increase the content of Alb, improve the dropsy and fat denaturalization of hepatocytes. In model of rat hepatic fibrosis induced by thioacetamide, RF can inhibit the increase of HA, Hyp and whole blood viscosity, and improve the activities of GSH-Px and SOD, and inauricular microcirculation. CONCLUSION: RF has apparent protective effects on hepatic injury by increasing activity of GSH-Px and SOD, scavenging free radicals produced by CCI4, reducing blood viscosity, and improving microcirculation and blood supply. 展开更多
关键词 5 4'-Dihydroxy-3' 5'-dimethoxy-7-0-β-D-glucopyranosyloxy-flavone Hepatic injury CCI4 free radicals Blood viscosity MICROCIRCULATION
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气象观测场在汽车试验场中的应用研究
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作者 陈海建 《时代汽车》 2024年第14期172-174,178,共4页
汽车试验场作为汽车开展道路测试的重要场所,用于验证汽车产品的品质以及可靠性。除了场地道路外,气象条件作为汽车道路测试的重要一环,在《GB/T12534-1990汽车道路试验方法通则》中也有明确要求,如:试验时应是无雨无雾天气,相对湿度小... 汽车试验场作为汽车开展道路测试的重要场所,用于验证汽车产品的品质以及可靠性。除了场地道路外,气象条件作为汽车道路测试的重要一环,在《GB/T12534-1990汽车道路试验方法通则》中也有明确要求,如:试验时应是无雨无雾天气,相对湿度小于95%,气温0-40℃,风速不大于3m/s。同时气象条件也作为试验场道路管控的重要依据,实时风速、雨量、能见度等信息为场地管理者发布限速、限行、封场等通知提供必要参考依据,直接影响道路测试安全管控的及时性。因此,文章从气象观测场的建设、气象服务、异常天气道路管控等方面开展气象观测场在汽车试验场中的应用研究。 展开更多
关键词 汽车试验场 气象服务 道路管控 products. In addition to the SITE roads METEOROLOGICAL conditions are an important part of AUTOMOTIVE ROAD testing and there are also clear requirements in the GB/T12534-1990 General Rules for AUTOMOTIVE ROAD Test Methods. For example the test should be conducted in rain and fog free weather with a relative humidity of less than 95% a temperature of 0-40 and a wind SPEED of no more than 3m/s. At the same time METEOROLOGICAL conditions also serve as an important basis for ROAD control in the test site. Real time information such as wind SPEED rainfall and visibility provides necessary reference for SITE managers to issue notices on SPEED limits SITE closures and traffic restrictions directly affecting the timeliness of ROAD testing safety control. Therefore this article conducts research on the application of METEOROLOGICAL observation SITES in AUTOMOTIVE testing SITES from the construction of METEOROLOGICAL observation SITES METEOROLOGICAL services and abnormal weather ROAD control.
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Free fatty acids, glucose, and insulin in type 2 diabetes mellitus 被引量:1
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作者 Rob NM Weijers 《World Journal of Diabetes》 SCIE 2022年第3期275-277,共3页
Xu et al used the HOMA2 model to estimate theβ-cell function and insulin resistance levels in an individual from simultaneously measured fasting plasma glucose and fasting plasma insulin levels.This method is based o... Xu et al used the HOMA2 model to estimate theβ-cell function and insulin resistance levels in an individual from simultaneously measured fasting plasma glucose and fasting plasma insulin levels.This method is based on the assumption that the glucose-insulin axis is central for the metabolic activities,which led to type 2 diabetes.However,significant downregulation of both the NKX2-1 gene and the TPD52L3 gene force an increase in the release of free fatty acids(FFAs)into the blood circulation,which leads to a marked reduction in membrane flexibility.These data favor a FFA-glucose-insulin axis.The authors are invited to extend their study with the introduction of the saturation index(number of carbon-carbon double bonds per 100 fatty-acyl chains),as observed in erythrocytes. 展开更多
关键词 free fatty acids Membrane flexibility NKX2-1 gene RNA sequencing Type 2 diabetes TPD52L-3 gene Unsaturation index
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Natural convection flow of a couple stress fluid between two vertical parallel plates with Hall and ion-slip effects 被引量:1
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作者 D.Srinivasacharya K.Kaladhar 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2012年第1期41-50,共10页
The Hall and ion-slip effects on fully developed electrically conducting couple stress fluid flow between vertical parallel plates in the presence of a temperature dependent heat source are investigated. The governing... The Hall and ion-slip effects on fully developed electrically conducting couple stress fluid flow between vertical parallel plates in the presence of a temperature dependent heat source are investigated. The governing non-linear partial differential equations are transformed into a system of ordinary differential equations using similarity transformations. The resulting equations are then solved using the homotopy analysis method (HAM). The effects of the magnetic parameter, Hall parameter, ion-slip parameter and couple stress fluid parameter on velocity and temperature are discussed and shown graphically 展开更多
关键词 free convection Couple stress fluid Magneto- hydrodynamics Hall and ion-slip effects - HAM
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