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《连衣裙、裙套》新旧标准差异对比

中国纤检 2024年第2期 86-89页

作者：梁秋韵麦培升广州检验检测认证集团有限公司广东广州510000

FZ/t 81004—2022《连衣裙、裙套》于2022年4月8日发布,2022年10月1日实施。现主要针对FZ/t 81004的新旧版标准的要求、检验方法两方面进行对比分析。

关键词：连衣裙、裙套差异对比要求检验方法对比分析

Magnetoresistivity studies for BiPb-2223 phase added by BaSnO3 nanoparticles

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Journal of Advanced Ceramics 2017年第2期6卷 100-109页

作者： mai ME.BARAKAt Khulud HABANJAR Department of Physics Faculty of Science Alexandria University Alexandria Egypt Department of Physics Faculty of Science Beirut Arab University Beirut Lebanon

Co-precipitation method and conventional solid-state reaction technique were used to synthesize BaSnO3 nanoparticles and (BaSnO3)x/Bi1.6Pb0.4Sr2Ca2Cu3O10+δ (0≤x≤ 1.50w t％) samples,respectively.X-ray powder diffraction (XRD),scanning electron microscopy (SEM),and electrical resistivity data were used to characterize BiPb-2223 phase added by BaSnO3 *** relative volume fraction and superconducting transition temperature tc of BiPb-2223 phase were enhanced by increasing BaSnO3 addition up to 0.50 wt％.these parameters were decreased with further increase of *** resistive transition broadening under different applied DC magnetic fields (0.29-4.40kG) was analyzed through thermally activated flux creep (tAFC) model and Ambegaokar-Halperin (AH) *** of the derived flux pinning energy U,critical current density Jc (0) estimated from AH parameter C(B),and upper critical magnetic field Bc2 (0),were recorded by adding BaSnO3 nanoparticles up to 0.50 wt％,beyond which these parameters were *** magnetic field dependence of the flux pinning energy and critical current density decreased as a power-law relation,which indicated the single junction sensitivity between the superconducting grains to the applied magnetic ***,the increase in the applied magnetic field did not affect the electronic thermal conductivity Ke above the superconducting transition temperature and suppressed it below tc.

关键词： BiPb-2223 BaSnO3 nanoparticles flux pinning energy critical current density

Strong Consistency of the Empirical Martingale Simulation Option Price Estimator

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Acta Mathematicae Applicatae Sinica 2009年第3期25卷 355-368页

作者： Zhu-shun Yuan Ge-mai Chen Department of Mathematics and Statistics University of Calgary 2500 University Drive NW Calgary Alberta Canada T2N 1N4

A simulation technique known as empirical martingale simulation （EMS） was proposed to improve simulation accuracy. By an adjustment to the standard Monte Carlo simulation, EMS ensures that the simulated price satisfies the rational option pricing bounds and that the estimated derivative contract price is strongly consistent with payoffs that satisfy Lipschitz condition. However, for some currently used contracts such as self-quanto options and asymmetric or symmetric power options, it is open whether the above asymptotic result holds. In this paper, we prove that the strong consistency of the EMS option price estimator holds for a wider class of univariate payoffs than those restricted by Lipschitz condition. Numerical experiments demonstrate that EMS can also substantially increase simulation accuracy in the extended setting.

关键词： Monte carlo Black-scholes GARCH

Evidence-Based Complementary and Alternative Medicine Effects of Capybara Oil on Cardiac Remodeling of C57bl/6 Mice

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Journal of Biosciences and Medicines 2024年第5期12卷 213-232页

作者： Rafael M. Almeida Wagner D. Giannetti Guilherme R. Silveira Carolina R. Castilho Renata v. Lisboa Bianca t. Ciambarella Rodrigo N. Ferreira Jorge José de Carvalho Laboratory of Ultrastructure and tissue Biology Institute of Biology State University of Rio de Janeiro Rio de Janeiro Brazil Higher Education Center of valenç a Dom Andr&#233 Arcoverde Educational Foundation Valen&#231a Brazil

Cardiovascular diseases are the main cause of morbidity and mortality in the world, and obesity and the metabolic syndrome are risk factors for its development. One of the therapies to reduce cardiovascular risk is the use of polyunsaturated fatty acids. In Brazil, a source of such acid is the oil extracted from the fat of the capybara. the objective of this work is to study the effects of the capybara oil on lipid and glucose metabolism, as well as its effects on the adipose tissue and cardiac remodeling. We assessed the effects of capybara oil treatment on body mass, lipid and carbohydrate metabolism, systolic blood pressure, adipose tissue and cardiac remodeling, and performed an ultrastructural evaluation of the myocardium in C57Bl/6 mice treated with high-fat diet. treatment with capybara oil reduced total cholesterol and triglyceride levels, systolic blood pressure, visceral and subcutaneous adipose tissue, and adipocyte diameter. In addition, cardiac remodeling was attenuated, preserving cardiomyocytes, increasing vascularization, reducing cardiomyocyte hypertrophy and the extracellular matrix, and preserving the morphological integrity of mitochondria. Capybara oil has several beneficial effects on the cardiovascular and metabolic system, and further studies are needed to better understand its role in the prevention or treatment of cardiovascular diseases.

关键词： Capybara Oil Cardiac Remodeling Polyunsaturated Fatty Acids Obesity Metabolic Syndrome

the Planck theory of Sonoluminescence

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Progress in Natural Science:Materials International 1998年第4期8卷 3-5页

作者： t.v.Prevenslik 2E Greenery Court China Discovery Bay Hong Kong

Sonolummescence (SL) may be explained by a theory, called the Planck theory of SL that treats she bubbles as miniature collapsing cavities. During bubble collapse, the Planck energy intrinsic to the cavity dimensions is converted to microwave photons that accumulate in the bubble wall molecules. Photons are emitted from the bubble wall molecules as the Planck energy accumulates to electronic levels.

关键词： Sonolluninescence Planck theory IRaser.

低蛋白饲料添加亮氨酸、精氨酸对大菱鲆幼鱼生长、消化、免疫及mtOR信号通路的影响

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中国海洋大学学报（自然科学版） 2024年第5期54卷 33-43页

作者：田原刘成栋王旋周慧慧麦康森何艮海水养殖教育部重点实验室(中国海洋大学) 山东青岛266003

为探究亮氨酸和精氨酸作为信号分子参与调控mtOR信号通路对大菱鲆(Scophthalmus maximus)生长的作用,本研究以大菱鲆幼鱼(初始体质量(13.50±0.19)g)为实验对象,设置50%蛋白水平饲料作为阳性对照组,45%蛋白水平饲料作为阴性对照组,设置... 详细信息

为探究亮氨酸和精氨酸作为信号分子参与调控mtOR信号通路对大菱鲆(Scophthalmus maximus)生长的作用,本研究以大菱鲆幼鱼(初始体质量(13.50±0.19)g)为实验对象,设置50%蛋白水平饲料作为阳性对照组,45%蛋白水平饲料作为阴性对照组,设置两个实验组,分别为在阴性对照组中添加1%亮氨酸的实验组和添加1%精氨酸的实验组,饲养周期为56 d,测量大菱鲆的生长性能和饲料利用水平。研究表明,添加亮氨酸、精氨酸均能一定程度提高因饲料蛋白水平不足导致的大菱鲆的特定生长率、蛋白质效率和增重率下降。添加1%亮氨酸和1%精氨酸均能在摄食后有效增强大菱鲆肌肉与肝脏mtOR信号通路中的雷帕霉素靶蛋白(mtOR)、核糖体蛋白S6和真核起始因子4E结合蛋白1(4E-BP1)的磷酸化。添加1%精氨酸还能够提高大菱鲆肠道淀粉酶和脂肪酶活性,显著提高血清过氧化氢酶和溶菌酶水平并增加血清总抗氧化能力。研究结果表明,在低蛋白饲料中添加1%亮氨酸、1%精氨酸能够激活大菱鲆mtOR信号通路,有效提高其生长性能和蛋白质效率;此外,添加1%精氨酸还能够提高大菱鲆的消化酶活性、增强非特异性免疫反应。

关键词：大菱鲆亮氨酸精氨酸 mtOR信号通路低蛋白饲料

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Ultrathin Metal Silicate Hydroxide Nanosheets with Moderate Metal-Oxygen Covalency Enables Efficient Oxygen Evolution

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Energy & Environmental Materials 2022年第1期5卷 231-237页

作者： Jiexin Zhu Shikun Li Zechao Zhuang Shan Gao Xufeng Hong Xuelei Pan Ruohan Yu Liang Zhou Lyudmila v.Moskaleva Liqiang mai State Key Laboratory of Advanced technology for Materials Synthesis and Processing Wuhan University of Technology Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable technology University of Bremen Department of Chemistry University of the Free State Collage of Chemistry & Chemical Engineering Anhui University Foshan Xianhu Laboratory of the Advanced Energy Science and technology Guangdong Laboratory Xianhu Hydrogen Valleyfoshan guangdong 528200china

Exploring efficient,cost-effective,and durable electrocatalysts for electrochemical oxygen evolution reaction(OER)is pivotal for the large-scale application of water *** advance has demonstrated that the activity of electrocatalysts exhibits a strong dependence on the surface electronic ***,a series of ultrathin metal silicate hydroxide nanosheets(UMSHNs)M_(3)Si_(2)O_(5)(OH)_(4)(M=Fe,Co,and Ni)synthesized without surfactant are introduced as highly active OER *** silicate hydroxide nanosheets show an optimal OER activity with overpotentials of 287 and 358 m v at 1 and 10 m A cm^(-2),*** experimental and theoretical studies,it is found that the OER activity of UMSHNs is dominated by the metal-oxygen covalency(MOC).High OER activity can be achieved by having a moderate MOC as reflected by aσ^(*)-orbital(e_(g))filling near unity and moderate[3d]/[2p]***,the UMSHNs exhibit favorable chemical stability under oxidation *** contribution provides a scientific guidance for further development of active metal silicate hydroxide catalysts.

关键词： electrocatalysis metal silicate hydroxide metal-oxygen covalency oxygen evolution reaction ultrathin nanosheet

英纯血马蹄病与血液指标和肠道菌群组成的相关性研究

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中国畜牧兽医 2024年第5期51卷 2198-2209页

作者：卢冲卢亚宾付涵缪荣浩买占海况玲新疆农业大学动物医学学院乌鲁木齐830052

【目的】研究马患蹄病与血液指标和肠道微生物菌群组成之间的关系。【方法】根据临床检查挑选6匹(12±3)岁龄患蹄病的英国纯血母马为试验组(S组),另选6匹体重、年龄相近的英纯血健康母马作为对照组(C组),对试验马进行3 d的临床检查及评... 详细信息

【目的】研究马患蹄病与血液指标和肠道微生物菌群组成之间的关系。【方法】根据临床检查挑选6匹(12±3)岁龄患蹄病的英国纯血母马为试验组(S组),另选6匹体重、年龄相近的英纯血健康母马作为对照组(C组),对试验马进行3 d的临床检查及评估。采集两组马颈静脉血及直肠粪便,进行血常规、血液生化指标检测;采用16S rRNA测序法检测马肠道菌群的组成。【结果】临床检查发现,S组马均有跛行,蹄甲变形等症状。血常规检测结果显示,两组马血液中各指标均差异不显著(P>0.05),其中S组马血液中白细胞数和中性粒细胞数均高于正常范围,血红蛋白浓度低于正常范围。血液生化指标检测结果显示,与C组相比,S组马血液中甘油三酯、总蛋白、尿素、肌酐含量等呈现上升趋势,白蛋白、总胆红素等指标呈现下降趋势(P>0.05)。16S rRNA测序结果显示,在门分类水平上,与C组相比,S组马肠道菌群中迷踪菌门(Elusimicrobia)相对丰度显著降低(Ptibacter)、库特氏菌属(Kurthia)相对丰度显著增加(Ptus_Endomicrobium)、微小杆菌属(Microvirga)、消化球菌属(Peptococcus)、普雷沃氏菌属(Prevotella)相对丰度显著降低(P<0.05)。两组马肠道菌群之间存在显著差异的菌种共10种。【结论】马发生蹄病后体内会出现炎症反应,造成肝肾功能受到损伤、肠道菌群物种丰度发生改变,同时消化能力降低。研究结果为进一步探索肠道菌群-代谢紊乱与马蹄病的关系奠定了基础,为通过调控肠道菌群防治马蹄病的发生提供了线索。

关键词：英纯血马蹄病血液指标肠道菌群

Modeling of Canonical Switching Cell Converter Using Genetic Algorithm

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Computer Modeling in Engineering & Sciences 2017年第1期113卷 109-116页

作者： t.v.viknesh v.Manikandan Department of Electrical and Electronics Engineering Coimbatore Institute of TechnologyCoimbatore-641014India

the working of Canonical switching cell(CSC)converter was studied and its equivalent circuit during ON and OFF states were *** space model of CSC converter in ON and OFF states were developed using the Kirchhoff *** state space matrices were used to construct the transfer functions of ON&OFF *** step response of the converter was simulated using *** step response curve was obtained using different values of circuit components(L,C1,C2 and RL)and *** characteristic parameters such as rise time,overshoot,settling time,steady state error and stability were determined using the step response *** response curve shows that there is no overshoot;the rise time and settling time are very low as expected for a converter and its stability is very high but the amplitude is *** circuit was tuned to attain the expected amplitude using PID controller with the help of Genetic *** excellent results of circuits’characteristic parameters are very useful guideline for constructing such CSC converters for DC-DC *** circuit characteristic parameters are useful in constructing such CSC converters for DCDC conversions in driving solar energy using solar panel.

关键词： Canonical switching cell converter state-space methods DC-DC converter step response stability power system modeling switching circuits genetic algorithm PID