检索结果-南通市图书馆

Journal of Energy Chemistry 2022年第7期31卷 224-229,I0006页

作者： juan Du Aibing Chen College of Chemical and pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang 050018HebeiChina

Electrochemical reduction of CO_(2)(CO_(2)ER) to formate has been a promising route to produce value-added *** low-cost and efficient electrocatalysts with high product selectivity is still a grand ***,a novel Ni nanoparticles-anchored CNT coated by mesoporous carbon with yolk-shell structure (CNT/Ni@mC) catalysis was designed for CO_(2)*** nanoparticles were confined in the cavity between CNT and mesoporous carbon shell and the confined space can be controlled by tuning the amount of silica *** mesoporous carbon shell and confined space are beneficial to charge transmission during CO_(2)*** contrast to previous studies,the CNT/Ni@mC catalyst presents selectivity toward formate rather than *** in situ attenuated total reflection Fourier transform infrared spectroscopy measurements indicate the presence of a COO* intermediate that converts to formate under CO_(2)ER *** well-defined structural feature of the confined space of the Ni-based catalyst for selective CO_(2)ER to formate may facilitate in-depth mechanistic understandings on structural factors that affect CO_(2)ER performance.

关键词： Carbon dioxide electrochemical reduction Nickel-based catalyst Formate Yolk-shell CNT

在线全文

学校读者我要写书评

暂无评论

烟曲霉外排泵唑类耐药研究进展

医学分子生物学杂志 2025年第1期22卷 97-100页

作者：王娟马彦山西医科大学第二医院皮肤性病科太原市030001

烟曲霉是一种广泛存在于自然界的机会性病原体,可引起侵袭性曲霉病,在免疫功能低下的患者中死亡率很高。三唑类药物是侵袭性曲霉病的一线治疗药物,然而近年来全球范围内烟曲霉唑类耐药分离株不断增多,极大地威胁到患者的生命健康。外排... 详细信息

烟曲霉是一种广泛存在于自然界的机会性病原体,可引起侵袭性曲霉病,在免疫功能低下的患者中死亡率很高。三唑类药物是侵袭性曲霉病的一线治疗药物,然而近年来全球范围内烟曲霉唑类耐药分离株不断增多,极大地威胁到患者的生命健康。外排泵由跨膜蛋白质组成,可以将不需要的物质排出细胞,对微生物的存活有着重要的保护作用,与此同时,研究表明它还介导了微生物的耐药。文章综述了近年来关于烟曲霉药物外排泵的功能及调控机制的研究进展,为深入理解烟曲霉耐药机制及筛选抗烟曲霉感染药物新靶点提供理论基础。

关键词：烟曲霉耐药外排泵

Wilson's Disease in China

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2017年第3期33卷 323-330页

作者： juan-juan Xie Zhi-Ying Wu Department of Neurology and Research Center of Neurologyin the Second Affiliated Hospital and the Collaborative Innovation Center for Brain ScienceZhejiang University School of MedicineHangzhou 310009China

Wilson＇s disease（WD） is an autosomal recessive disorder of copper metabolism. Its incidence is higher in China than in western countries. ATp7 B is the causative gene and encodes a p-type ATpase, which participates in the synthesis of holoceruloplasmin and copper excretion. Disease-causing variants of ATp7 B disrupt the normal structure or function of the enzyme and cause copper deposition in multiple organs,leading to diverse clinical manifestations. Given the variety of presentations, misdiagnosis is not rare. Genetic diagnosis plays an important role and has gradually become a routine test in China. The first Chinese spectrum of disease-causing mutations of ATp7 B has been established. As a remediable hereditary disorder, most WD patients have a good prognosis with an early diagnosis and chelation treatment. However, clinical trials are relatively few in China, and most treatments are based on the experience of experts and evidences from other countries. It is necessary to study and develop appropriate regimens specific for Chinese WD patients.

关键词： Wilson’s Disease Copper Epidemiology pathogenesis Management

Boundary Control of Coupled Non-Constant parameter Systems of Time Fractional pDEs with Different-Type Boundary Conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2023年第1期36卷 273-293页

作者： CHEN juan ZHUANG Bo Aliyun School of Big Data Changzhou UniversityChangzhou 213164China School of Information Engineering Binzhou UniversityBinzhou 256600China

This paper addresses a boundary state feedback control problem for a coupled system of time fractional partial differential equations(pDEs)with non-constant(space-dependent)coefficients and different-type boundary conditions(BCs).The BCs could be heterogeneous-type or ***,this coupled system has different BCs at the uncontrolled side for heterogeneous-type and the same BCs at the uncontrolled side for *** main contribution is to extend pDE backstepping to the boundary control problem of time fractional pDEs with space-dependent parameters and different-type *** the backstepping transformation and the fractional Lyapunov method,the Mittag-Leffler stability of the closed-loop system is obtained.A numerical scheme is proposed to simulate the fractional case when kernel equations have not an explicit solution.

关键词： Boundary control coupled systems heterogeneous mittag-leffler stability time fractional pDEs with space-dependent coefficients

运动疗法对前交叉韧带重建后康复疗效影响的网状Meta分析

在线全文

学校读者我要写书评

暂无评论

中国组织工程研究 2025年第8期29卷 1714-1726页

作者：王娟王广兰左会武武汉体育学院运动医学院湖北省武汉市430079

目的:运动干预被认为是前交叉韧带重建后康复的基础。然而,关于何种运动疗法在改善前交叉韧带重建后患者膝关节肌肉力量和功能方面更有效,目前仍未得出明确结论。为此,文章采用网状Meta分析方法,比较运动疗法治疗前交叉韧带重建后的疗效... 详细信息

目的:运动干预被认为是前交叉韧带重建后康复的基础。然而,关于何种运动疗法在改善前交叉韧带重建后患者膝关节肌肉力量和功能方面更有效,目前仍未得出明确结论。为此,文章采用网状Meta分析方法,比较运动疗法治疗前交叉韧带重建后的疗效,为选择最佳运动疗法提供循证医学依据。方法:计算机检索pubMed,Web of Science,Embase,The Cochrane Library及EBSCO数据库运动疗法治疗前交叉韧带重建后的随机对照试验,检索时限均从建库至2023-11-20。结局指标包括股四头肌肌力、腘绳肌肌力、膝关节功能评分3个连续性变量。运用EndNote X9.1软件筛选文献。采用Cochrane风险偏倚评估工具对纳入的文献进行质量评价,根据GRADE评分对文章结果的证据强度进行评级,采用Stata 16.0进行网状Meta分析。结果:①共纳入36项随机对照试验,包括1179例前交叉韧带重建后患者,纳入文献整体质量中等;涉及9种运动疗法:等速训练、交叉训练、离心训练、水中康复、血流限制训练、运动控制训练、增强式训练、全身振动训练和综合训练;对照措施为常规康复训练。②网状Meta分析结果显示:与常规康复训练相比,离心训练(SMD=2.08,95%CI:0.56-3.60,p=0.007)对前交叉韧带重建后患者股四头肌肌力的改善效果最佳,其次是综合训练(SMD=1.69,95%CI:0.11-3.27,p=0.249)和全身振动训练(SMD=0.81,95%CI:0.11-1.51,p=0.042);在提升患者腘绳肌肌力方面,综合训练(SMD=2.08,95%CI:0.30-3.86,p=0.022)效果最佳,其次是增强式训练(SMD=1.51,95%CI:0.18-2.84,p=0.026)和等速训练(SMD=1.37,95%CI:0.06-2.67,p=0.039);综合训练(SMD=4.60,95%CI:2.40-6.80,pp=0.023)和水中康复(SMD=1.65,95%CI:0.07-3.24,p=0.041)。结论:低到中等强度的临床证据证实,在改善前交叉韧带重建后患者膝关节肌肉力量和功能方面,综合训练可能是最有效的运动疗法,其次是离心训练、增强式训练、等速训练、全身振动训练、水中康复。未来仍需更多高质量的临床随机对照试验来验证结论的可靠性。

关键词：运动疗法前交叉韧带前交叉韧带重建肌肉力量股四头肌肌力腘绳肌肌力膝关节功能随机对照试验网状Meta分析

Commuting Structure Jacobi Operator for Real Hypersurfaces in Complex Two-plane Grassmannians

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2015年第1期31卷 111-122页

作者： Carlos J.G.MACHADO juan de Dios pREZ Young Jin SUH Departamento de Geometria y Topologia Universidad de Granada Kyungpook National University Department of Mathematics

We classify real hypersurfaces in complex two-plane Grassmannians whose structure Jacobi operator commutes either with any other Jacobi operator or with the normal Jacobi operator.

关键词： Real hypersurfaces complex two-plane Grassmannians structure Jacobi operator normal Jacobi operator

A Note on the Stability of Geodesics on Diffeomorphism Groups with One-side Invariant Metric

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2020年第5期36卷 620-630页

作者： Li juan ZHOU School of Mathematical Sciences Inner Mongolia UniversityHohhot 0010021P.R.China

In this note,we consider the stability of geodesics on volume-preserving diffeomorphism groups with one-side invariant *** showed that for non-Beltrami fields on a three-dimensional compact manifold,there does not exist Eulerian stable flow which is Lagrangian exponential *** noticed that a stationary flow corresponding to the KdV equation can be Eulerian stable while the corresponding motion of the fluid is at most exponentially unstable.

关键词： Volume-preserving diffeomorphism group Bott-Virasoro group Euler equation geodesic Eulerian instability Lagrangian instability

Study on Diameter Controlled Growth of Carbon Nanotubes by LaAl_(1-x)Fe_xO_3 Catalysts

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2005年第1期21卷 4-7页

作者： pENGFeng WANGHong-juan DepartmentofChemicalEngineering SouthChinaUniversityofTechnologyGuangzhou510640P.R.China

A series of LaAl 1-xFe xO 3 catalysts prepared with lanthanum nitrate, aluminium nitrate and iron nitrate was investigated in catalytical syntheses of carbon nanotubes with high yields and purity. The properties of carbon nanotubes prepared by the method of CVD(chemical vapor deposition) with n-hexane as the carbon resource were studied and it was shown that the diameter of carbon nanotubes can be controlled by the molar ratio of iron to aluminum in the catalysts and that the diameter of carbon nanotubes changes a little with the decrease of the iron content in the catalysts. From the TEM pictures of carbon nanotubes, it can be found that the LaAl 1-xFe xO 3 catalysts have a significant influence on the wall thickness of the carbon nanotubes, whereas they have little influence on the inner diameter of the carbon nanotubes.

关键词： Carbon nanotube LaAl1-xFexO3 Chemical vapor deposition Diameter controlled Catalyst

predicting Natural and Chaotic Time Series with a Swarm-Optimized Neural Network

在线全文

学校读者我要写书评

暂无评论

Chinese physics Letters 2011年第11期28卷 38-40页

作者： juan A Lazzús Departamento de Física Universidad de La SerenaCasilla 554La SerenaChile

Natural and chaotic time series are predicted using an artificial neural network(ANN)based on particle swarm optimization(pSO).Firstly,the hybrid ANN+pSO algorithm is applied on Mackey–Glass series in the short-term prediction𝑥(𝑡+6),using the current value𝑥(𝑡)and the past values:𝑥(𝑡−6),𝑥(𝑡−12),𝑥(𝑡−18).Then,this method is applied on solar radiation data using the values of the past years:𝑥(𝑡−1),...,𝑥(𝑡−4).The results show that the ANN+pSO method is a very powerful tool for making predictions of natural and chaotic time series.

关键词： series chaotic method

Functional explanation of extreme hatching asynchrony: Male Manipulation Hypothesis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Zoological Research 2022年第5期43卷 843-850页

作者： Manuel Soler Francisco Ruiz-Raya Lucia Sanchez-perez juan Diego Ibanez-Álamo juan JoseSoler Departamento de Zoologia Facultad de CienciasUniversidad de GranadaGranada E-18071Spain Unidad Asociada Coevolucion:Cucos Hospedadores y Bacterias SimbiontesUniversidad de GranadaGranada E-18071Spain Centro de Investigacion Mariña Universidade de VigoGrupo de Ecoloxia AnimalVigo 36310Spain Departamento de Ecologia Funcional y Evolutiva Estacion Experimental de ZonasÁridas(CSIC)Almeria E-4120Spain

Hatching asynchrony in birds is considered an adaptation to facilitate brood reduction because under conditions of food scarcity, the smallest nestling usually dies soon after hatching, thereby minimizing parental effort. However, in species with extreme hatching asynchrony, the last hatchlings paradoxically experience a very low probability of survival and death can take so long that it can hardly be considered an adaptation. Here, we propose and experimentally tested a new adaptive hypothesis explaining the brood reduction paradox, namely the“Male Manipulation Hypothesis”. Our hypothesis suggests that by inducing asynchronous hatching,females increase the feeding requirements of the brood, which will induce males to increase provisioning effort. In addition, females may extend the period of male manipulation by feeding the smallest nestling just enough to sustain life. Our study showed that male common blackbirds(Turdus merula) increased their effort(i.e., number of food items per hour) in experimental asynchronous broods compared to synchronous broods, while females reduced their contribution, as predicted by the hypothesis.

关键词： Brood reduction Food allocation Hatchingasynchrony Malemanipulation hypothesis Sexual differences in food allocation Turdus merula