检索结果-南通市图书馆

An Efficient Bio-inspired Oxygen Reduction Reaction Catalyst:MnO_(x)Nanosheets Incorporated Iron Phthalocyanine Functionalized Graphene

引用

能源与环境材料（英文） 2021年第3期4卷 474-480页

作者： Xing Wu Yi Cheng jean-pierre Veder San Ping Jiang Department of Environmental Engineering School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China National Engineering Technology Research Center for Control and Treatment of Heavy-metal Pollution Changsha 410083China John de Laeter Centre Curtin UniversityPerth WA 6102Australia Fuels and Energy Technology Institute Curtin UniversityPerth WA 6102Australia

Oxygen reduction reaction(ORR)catalysts play a critical role in energy storage and conversion devices and have been attracted enormous interests,and however,it remains challenging to develop highly active cheap catalysts in a simple and green *** by the heme-copper oxidases(HOCs),in which the ORR active center is originated from the incorporation of Fe-N_(4)with copper atom,we here developed a fine manganese oxide nanosheets(MnO_(x)NSs)integrated with iron phthalocyanine(FePc)anchored on highly conductive graphene(MnO_(x)/FePc-G)through a green route only involve ethanol as the *** bio-inspired catalyst MnO_(x)/Fe Pc-G demonstrated high ORR activity with a half-wave potential(E_(1/2))of 0.887 V,about 57 mV more positive than that of Pt/*** the current density(j)at 0.9 V is about 1.9 m A cm^(-2),which is three times of Pt/C and *** importantly,the bio-inspired systems show superior stability in comparison to commercial Pt/C,showing a potential of 0.863 V to deliver a j of 3 mA cm^(-2)after 18000 s polarization,about 80 mV higher than that of 0.783 V for Pt/*** high activity is contributed by the integration of the Fe Pc and MnO_(x)NSs that plays the role to assist the cleavage of the O_(2)*** approach provides a new evidence to develop highly efficient ORR catalysts through imitate the naturally involved systems through a simple route.

关键词： bio-inspired heme-copper oxidases iron phthalocyanine MnO_(x)nanosheets oxygen reduction reaction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Land use impact on clay dispersion/flocculation in irrigated and flooded vertisols from Northern Cameroon

引用

International Soil and Water Conservation Research 2018年第3期6卷 237-244页

作者： Simon Djakba Basga DésiréTsozue jean pierre Temga Jules Balna jean pierre Nguetnkam Institute of Agricultural Research for Development(IRAD) P.O.Box33MarouaCameroon Department of Earth Sciences Faculty of ScienceUniversity of MarouaP.O Box814MarouaCameroon Department of Earth Sciences Faculty of ScienceUniversity of Yaoundé1P.O Box812YaoundéCameroon Department of Earth Sciences Faculty of ScienceUniversity of NgaoundéréP.O Box454NgaoundéréCameroon

Clay dispersion by water is important for soil and water conservation as well as for irrigation scheduling. In the present study, clay dispersion/flocculation of irrigated and flooded vertisols in North Cameroon was investigated using clay dispersion/stability indices. Nine vertisols topsoils (0–20 cm) samples were collected on different land use and their clay dispersion indices were assessed. Vertisols were acidic to slightly basic, with smectites as dominant clay mineral. The water dispersible clay (160–340 g kg-1), the dispersion ratio (0.55–0.79) and the clay dispersion ratio (0.48–0.83) were high in the studied vertisols while the clay flocculation index (0.17–0.54) and the clay aggregation (70–230 g kg-1) were low to moderate, indicating their high dispersion. Cropped vertisols displayed the higher amount of water dispersible clay while not cropped recorded the smaller amount. Concerning the cropped soils, irrigated vertisols displayed the highest clay dispersion indices suggesting that agricultural practices (irrigation) enhance clay dispersion. Globally, the clay dispersibility trend was: irrigated paddy ? rainy sorghum ? rainfed paddy ? dry-season sorghum ? not cropped. Statistical analyses revealed that amorphous Al, Na+ and electrical conductivity enhance clay dispersion while organic matter, nitrogen and Ca++ promote clay flocculation/aggregation. The overall findings emphasized that practices such as heavy tillage and irrigation induce clay dispersion. Minimum tillage, electrolytes concentration monitoring in irrigation water, irrigation scheduling based on soil moisture control, organic matter inputs and implementation of adapted dams are measures susceptible to limit their degradation through clay dispersion.

关键词： Vertisols Clay dispersion Irrigation Land use North Cameroon

来源：

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

Next Generation Scanning LIDAR Systems for Optimizing Wake Turbulence Separation Minima

引用

雷达学报（中英文） 2017年第6期6卷 689-698页

作者： Ludovic Thobois jean-pierre Cariou LEOSPHERE

Numerous studies have been performed to better understand the behavior of wake vortices with regards to aircraft characteristics and weather conditionsover the pastten years. These studies have led to the development of the aircraft RECATegorization(RECAT) programs in Europe and in USA. Its phase one focused on redefining distance separation matrix with six static aircraft wake turbulence categories instead of three with the current International Civil Aviation Organization(ICAO) regulations. In Europe, the RECAT-EU regulation is now entering under operational implementation atseveral key airports. As proven by several research projects in the past, LIght Detection And Ranging(LIDAR) sensors are considered as the ground truth wake vortex measurements for assessing the safety impact of a new wake turbulence regulation at an airport in quantifying the risks given the local specificities. LIDAR's can also be used to perform risk monitoring after the implementation. In this paper, the principle to measure wake vortices with scanning coherent Doppler LIDARs is described as well as its dedicated post-processing. Finally the use of WINDCUBELIDAR based solution for supporting the implementation of new wake turbulenceregulation is described along with satisfyingresults that have permitted the monitoring of the wake vortex encounter risk after the implementation of a new wake turbulence regulation.

关键词： Wake turbulence Wake vortices LIght Detection And Ranging(LIDAR) Algorithm Circulation Data collection Safety case Risk monitoring

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multiplexing technology for in vitro diagnosis of pathogens： the key contribution of phosphorus dendrimers

引用

Science China Materials 2018年第11期61卷 1454-1461页

作者： jean pierre Majoral jean Marie Francois Richard Fabre Alice Senescau Serge Mignani Anne-Marie Caminade Laboratoire de Chimie de Coordination du CNRS 31077 Toulouse Cedex 4France LCC-CNRS Universit6 de Toulouse CNRSToulouseFrance Dendris 31670 LabegeFrance LISBP UMR CNRS 5504 INRA 79231077 Toulouse Cedex 04France Universite Paris Descartes PRES Sorbonne Paris Cite CNRS-UMR 860Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicolgique75006 ParisFrance

After the microbiology based on Pasteur's method and polymerase chain reaction(PCR), the diagnosis company named Dendris has proposed a third-generation of diagnosis enabling the search of a broad range of pathogens with strong sensitivity and specificity. This extraordinary profile was possible thanks to the use of phosphorus dendrimers for which various techniques of deposition on a given support were investigated and described and analyzed in this report.

关键词： phosphorus dendrimers diagnosis DNA arrays multiplexing technology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Universal Behavior of Nuclear Fragmentation

引用

Chinese journal of nuclear physics 1995年第3期17卷 215-220页

作者： Zheng, Yuming Richert, jean Wagner, pierre Beijing China

We use the bond percolation model to study the multifragrnentation of197Au projectiles interact-ing with Cu target at a bombarding energy of 600 MeV/*** charge observables and some of their dif-ferential distributions are *** theoretical results agree well with the experimental data ofALADIN *** indicates that the percolation model can describe reasonably the universal be-havior of nuclear fragmentation in nucleus-nucleus collisions.

关键词： Nuclear fragmentation Universal behavior Bond percolation model Heavy ion collision

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

New opportunities of dendrimers for theranostic approaches to personalized medicine

引用

Science China Materials 2018年第11期61卷 1365-1366页

作者： jean-pierre Majoral Xiangyang Shi Serge Mignani Laboratoire de Chimie de Coordination Centre National de la Recherche Scientifique Toulouse France College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai China CQM-Centro de Quimica da Madeira MMRG Universidade da Madeira Campus da Penteada 9020-105 Funchal Portugal

Theranostic nanomedicine paradigm, a combination of specific molecular diagnostic tests and specific targeted therapy, involves two topics:therapeutic product efficacies and diagnosis. The first topic concerns identified patients to be treated, whereas the second is to select patients for personalized medicine. Generally, nanotechnology allows developing theranostic strategy

关键词：特定分子诊断测试定向治疗发展现状医疗卫生行业

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Carleman Estimates for Parabolic Equations with Nonhomogeneous Boundary Conditions

引用

Chinese Annals of Mathematics,Series B 2009年第4期30卷 333-378页

作者： Oleg Yu IMANUVILOV jean pierre PUEL Masahiro YAMAMOTO Department of Mathematics Colorado State University 101 Weber Building Fort Collins CO 80523USA Laboratoire de Mathematiques de Versailles Universit de Versailles-St. Quentin 45 Avenue des Etats Unis 78035 Versailles France. Department of Mathematical Sciences University of Tokyo Komaba Meguro Tokyo 153 Japan.

The authors prove a new Carleman estimate for general linear second order parabolic equation with nonhomogeneous boundary conditions. On the basis of this estimate, improved Carleman estimates for the Stokes system and for a system of parabolic equations with a penalty term are obtained. This system can be viewed as an approximation of the Stokes system.

关键词： Controllability Parabolic equations Carleman estimates

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Experimental evidence of obesity as a risk factor for severe acute pancreatitis

引用

World Journal of Gastroenterology 2009年第42期15卷 5260-5265页

作者： jean-Louis Frossard pierre Lescuyer Catherine M Pastor Service of Gastroenterology Geneva University HospitalsGeneva 1205Switzerland Laboratory of pathophysiology and molecular imaging Geneva University HospitalsGeneva 1205Switzerland Service of Genetics and Central Laboratory Geneva University HospitalsGeneva 1205Switzerland

The incidence of acute pancreatitis, an inflammation of the pancreas, is increasing worldwide. Pancreatic injury is mild in 80%-90% of patients who recover without complications. The remaining patients may develop a severe disease with local complications such as acinar cell necrosis, abscess and remote organ injury including lung injury. The early prediction of the severity of the disease is an important goal for physicians in management of patients with acute pancreatitis in order to optimize the therapy and to prevent organ dysfunction and local complications. For that purpose, multiple clinical scale scores have been applied to patients with acute pancreatitis. Recently, a new problem has emerged： the increased severity of the disease in obese patients. However, the mechanisms by which obesity increases the severity of acute pancreatitis are unclear. Several hypotheses have been suggested：（1） obese patients have an increased inflammation within the pancreas; （2） obese patients have an increased accumulation of fat within and around the pancreas where necrosis is often located; （3） increase in both peri- and intra-pancreatic fat and inflammatory cells explain the high incidence of pancreatic inflammation and necrosis in obese patients; （4） hepatic dysfunction associated with obesity might enhance the systemic inflammatory response by altering the detoxiflcation of inflammatory mediators; and （5） ventilation/perfusion mismatch leading to hypoxia associated with a low pancreatic flow might reduce the pancreatic oxygenation and further enhance pancreatic injury. Recent experimental investigations also show an increased mortality and morbidity in obese rodents with acute pancreatitis and the implication of the adipokines leptin and adiponectin. Such models are important to investigate whether the inflammatory response of the disease is enhanced by obesity. It is exciting to speculate that manipulation of the adipokine milieu has the potential to influence the severi

关键词： Acute pancreatitis Obesity Adiponectin Leptin

来源：

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

A general extension theorem for cohomology classes on non reduced analytic subspaces

引用

Science China Mathematics 2017年第6期60卷 949-962页

作者： CAO JunYan DEMAILLY jean-pierre MATSUMURA Shin-ichi Institut de Mathématiques de Jussieu UniversitéPierre et Marie CurieParis 75252France Institut Fourier UniversitéGrenoble AlpesGlares 38610France Mathematical Institute Tohoku UniversitySendal 980-8578Japan

The main purpose of this paper is to generalize the celebrated L^2 extension theorem of Ohsawa and Takegoshi in several directions: The holomorphic sections to extend are taken in a possibly singular hermitian line bundle, the subvariety from which the extension is performed may be non reduced, the ambient manifold is K¨ahler and holomorphically convex, but not necessarily compact.

关键词： compact Kahler manifold singular hermitian metric coherent sheaf cohomology Dolbeault coho- mology plurisubharmonic function L2 estimates Ohsawa-Takegoshi extension theorem multiplier ideal sheaf

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Monitoring absolute vertical land motions and absolute sea-level changes from GPS and tide gauges data over French Polynesia

引用

Geodesy and Geodynamics 2024年第1期

作者： Xianjie Li jean-pierre Barriot Bernard Ducarme Marania Hopuare Yidong Lou

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：