检索结果-南通市图书馆

Clarifications for the Published Article: “A Solution to the Famous Twin’s Problem” in the APM of SCIrP at 24 September of 2019

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Pure Mathematics 2020年第9期10卷 547-587页

作者： Prodromos char. Papadopoulos 1st Gymnasium in Giannitsa Giannitsa Greece

This article b is almost autonomous because it can be read independently from the first published article A [1] using only a few parts of the article A. be-low are given instructions so to need the reader study only on few places of the article A. Also, in the part A of Introduction, here, you will find simple and useful definitions and the strategy we are going to follow as well useful new theorems (also and in Section 5, which have been produced in this solution). So the published solution of twin’s problem can now be easily understood. The inequalities (4.17), (4.18) of Article A are proved here in Section 4 by a new clear method, without the possible ambiguity of the text between the relations (4.14), (4.16) of the Article A. Also we complete the proof for the twin’s distri-bution which we use. At the end here are presented the Conclusions, the No-menclatures and the numerical control of the proof, which is probably useful as well in coding methods. For a general and convincing picture is sufficient, a study from the beginning of this article b until the end of the part A of the In-troduction here as well a general glance on the Section 5 and on the Conclu-sions below.

riemann Hypothesis, Catholic Information and Potential of Events with New Techniques for Financial and Other Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Pure Mathematics 2021年第5期11卷 524-572页

作者： Prodromos char. Papadopoulos Aristotle University National Hellenic Research Foundation Giannitsa (or Yiannitsa) Greece

In this research we are going to define two new concepts: a) “The Potential of Events” (EP) and b) “The Catholic Information” (CI). The term CI derives from the ancient Greek language and declares all the Catholic (general) Logical Propositions (rc="Edit_***" width="33" height="21" alt="" />) which will true for every element of a set A. We will study the riemann Hypothesis in two stages: a) by using the EP we will prove that the distribution of events e (even) and o (odd) of Square Free Numbers (SFN) on the axis Ax(N) of naturals is Heads-Tails (H-T) type. b) by using the CI we will explain the way that the distribution of prime numbers can be correlated with the non-trivial zeros of the function ζ(s) of riemann. The Introduction and the Chapter 2 are necessary for understanding the solution. In the Chapter 3 we will present a simple method of forecasting in many very useful applications (e.g. financial, technological, medical, social, etc) developing a generalization of this new, proven here, theory which we finally apply to the solution of rH. The following Introduction as well the results with the Discussion at the end shed light about the possibility of the proof of all the above. The article consists of 9 chapters that are numbered by 1, 2, …, 9.

关键词： Twin Problem Twin’s Problem Unsolved Mathematical Problems Prime Number Problems Millennium Problems riemann Hypothesis riemann’s Hypothesis Number Theory Information Theory Probabilities Statistics Management Financial Applications Arithmetical Analysis Optimization Theory Stock Exchange Mathematics Approximation Methods Manifolds Economical Mathematics random Variables Space of Events Strategy Games Probability Density Stock Market Technical Analysis Forecasting

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

筋条加固砂地基的承载力试验

路基工程 1988年第1期 79-82页

作者： b.P.Verma A.N.r.char.尚继红铁道部科学研究院西北研究所

使用模型基座对竖直插入镀锌钢筋加固的砂质地基进行承载力试验,已显示出这种改进后的加筋形式比旧式水平布筋为有利。新方法取得的良好效果,是和加固筋条的间距、直径、粗糙度和布筋范围的宽度有关。

关键词：筋条砂质加固地基

Experimental Investigation of Pyrolysis Process of Woody biomass Mixture

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal Science 2014年第3期23卷 290-296页

作者： Tijana r.Kosanic Mirjana b.Ceranic Slavko N.Duric Vojin r.Grkovic Milan M.Milotic Sasa D.brankov Faculty of Technical Sciences University of Novi SadRepublic of Serbia Faculty of Transport and Traffic Engineering University of East SarajevoDoboj Bosnia and Herzegovina

This paper describes an experimental investigation of pyrolysis of woody biomass mixture. The mixture consists of oak, beech, fir, cherry, walnut and linden wood chips with equal mass fractions. During the experiment, the sample mass inside the reactor was 10 g with a particle diameter of 5-10 mm. The sample in the reactor was heated in the temperature range of 24-650℃. Average sample heating rates in the reactor were 21, 30 and 54 ℃/min. The sample mass before, during and after pyrolysis was determined using a digital scale. Experimental results of the sample mass change indicate that the highest yield of pyrolytic gas was achieved at the temperature slightly above 650℃ and ranged from 77 to 85%, while char yield ranged from 15 to 23%. Heating rate has sig- nificant influence on the pyrolytic gas and char yields. It was determined that higher pyrolysis temperatures and heating rates induce higher yields of pyrolytic gas, while the char mass reduces. Condensation of pyrolytic gas at the end of the pyrolysis process at 650℃ produced 2.4-2.72 g of liquid phase. The results obtained represent a starting basis for determining material and heat balance of pyrolysis process as well as woody biomass pyrolysis equipment.

关键词： pyrolysis woody biomass mixture pyrolysis temperature gas yield

Non-isothermal effectiveness factors in thermo-chemical char conversion

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

Carbon resources Conversion 2021年第1期4卷 47-54页

作者： Markus bösenhofer Michael Harasek TU Wien Institute of ChemicalEnvironmental and Bioscience EngineeringGetreidemarkt 9/1661060 ViennaAustria K1-MET GmbH Area 4-Simulation and AnalysesStahlstraße 144020 LinzAustria

Modeling heterogeneous combustion and gasification at large or industry scale is important in ongoing research and development *** simulations rely on comprehensive,accurate,and efficient solid conversion *** diffusion is an important sub-process of gas-solid reactions and is often approximated by effectiveness *** expressions for isothermal effectiveness factors are usually used,due to the numerical effort of determining non-isothermal *** consequences of this simplification are evaluated by determining non-isothermal effectiveness factors for typical combustion conditions for the reactions of carbon with O_(2),CO_(2),H_(2)O,and H_(2).The results show that exothermal reaction rates are under-estimated,while endothermal are over-estimated at low and intermediate temperatures for Thiele moduli between 0.1 and *** addition,the reaction zone relocates towards the outer particle layers under these ***-sensitivity effects between the four reactions are neglected in this study.A reasonable approximation is the superposition of the individual reactions,because the oxidation reaction is dominant under typical combustion conditions.

关键词： reaction-diffusion equation Non-isothermal char conversion Gas-solid reactions Shooting method Non-linear boundary value problem

Use of wild trout for PbDE assessment in freshwater environments: review and summary of critical factors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Emerging Contaminants 2015年第1期1卷 54-63页

作者： Juan M.ríos Nerina b.Lana Paula berton Néstor F.Ciocco Jorgelina C.Altamirano Laboratorio de Química Ambiental Instituto Argentino de NivologíaGlaciología y Ciencias Ambientales(IANIGLA)-CONICETMendozaP.O Box 1315500 MendozaArgentina Facultad de Ciencias Exactas y Naturales Universidad Nacional de CuyoPadre J.Contreras 13005500 MendozaArgentina Instituto Argentino de Investigaciòn de ZonasÁridas(IADIZA)-CONICET MendozaP.O Box 5075500 MendozaArgentina

Certain wild animals represent sentinels to address issues related to environmental pollution,since they can provide integrative data on both pollutant exposure and biological *** their technological benefits,PbDEs are considered a threat to environmental health due to their persistence,toxicity,and capacity to be *** pollutants have been found geographically widespread in fish,particularly in predator species such as *** aim of this work is to critically review the applicability and usefulness of wild trout for assessing PbDEs in freshwater *** reports include data from highly industrialized areas as well as areas from remote regions with relatively low human activity,including European and North American great lakes and freshwater environments in Europe,Greenland,subarctic areas and Patagonia,respectively.A summary of relevant factors were grouped into organism-specific factors(food habits,age,size,lipid content,sex and reproduction,tissue type,mechanism of contaminant uptake and metabolism),and PbDE levels in the surrounding environment(sediment).Five wild trout species[rainbow trout(Oncorhynchus mykiss),brown trout(Salmo trutta),lake trout(Salvelinus namaycush),arctic char(Salvelinus alpinus),and brook trout(Salvelinus fontinalis)],collected worldwide within the 1994 to present time frame,were *** techniques(principal component analysis-PCA)and mapping approach,showed clear differences in geographic distribution patterns of PbDE levels in trout depending on the region studied:wild trout from European and North American great lakes have the highest PbDE *** pattern could be due to high industrial activity at these locations.A correlational approach used to explore intraspecific relationships between PbDE levels and morphometry,showed positive relationships only for brown ***,brown trout showed the highest trout-to-sediment ratios,which is suggestive of a relatively greater capa

关键词： Critical factors Freshwater environments PbDE Trout Global hotspots

A New Family Programme in Zhejiang Province

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Population Today 1994年第2期11卷 10-12页

作者： b Xu

Sincc April 1993,a new family programrn:char-actcrized mainly by deferred marriagc and dcfcrrcd childbearing,fewer bul hcalthier births,modernizing family life and achicving prosperity through industri-ous work has been promoted in Zhejiang *** programme intcgratcs family planning into the de-velopment of a socialist markct cconomy and the es-ta blishment of modern *** programme is welcomed by local residents for it scrvcs pcoplc's intcr-csts and providcs assistance to production,improvc-ments in their livelihoods and family planning serviccs.

关键词： Family

Synthesis of Highly Ordered Large Size Mesoporous Silica and Effect of Stabilization as Enzyme Supports in Organic Solvent

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

材料科学与工程学报 2000年第Z1期20卷 392-399页

作者： b.Li Toyota Central r&D Labs. Inc. 41-1 Yokomichi Nagakute-cho Aichi480-1192 Japan

The FSM-16, MCM-41 and SbA-15 type hexagonal mesoporous silica materials having a highly arrange in order of the 2-dimensional structure were synthesized by using different silicon sources and surfactants. In the 2-dimensional silicate framework, pore size can be uniformly controlled by the combined use of the surfactants having different alkyl chains length and swelling agents (triisopropyl benzene). Pore-diameter of FSM-16 and MCM-41 can be expanded to 100 A, SbA-15 is 150 A. Crystal regularity decreased with increasing the pore-diameter in the FSM-16 derived from Kanemite (silicon source) and MCM-41 from water glass, its anionic char-acteristics on the pore wall may be higher than SbA-15 derived from oligomeric tetramethoxysilane (TMOS) is also reported. We have successfully used FSM-16 and MCM-41 as immobilizing agents of enzyme having cationic residues under isoelectric point. The level of adsorption of enzymes in the FSM-16 and MCM-41 was relatively high, but was low in the SbA-15 support. The mechanism of enzyme adsorption in mesopore was suggested to be the ionic interactions. In aqueous solutions, horseradish peroxidase (HrP) immobilized in FSM-16 containing 89A mesopore showed the highest loaded amounts(183mg/mg FSM),then a FSM-16 of pore-diameter 30 A only loaded a litter amounts (28mg/mg FSM) on the outside surface. The catalytic activity in organic solvent is high when HrP was immobilized in FSM-16 and MCM-41, but is low in case of SbA- 15.

关键词： Mesoporous silica crystal FSM-16 surfactants pore-diameter adsorption enzyme activity

Modification of tamarind fruit shell powder with in situ generated copper nanoparticles by single step hydrothermal method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of bioresources and bioproducts 2020年第3期5卷 180-185页

作者： b.Ashok N.Hariram Suchart Siengchin A.Varada rajulu Department of Physics University College of EngineeringOsmania UniversityHyderabad-500007Telangana StateIndia Department of biotechnology Kalasalingam UniversityKrishnankoil-626126Tamil NaduIndia Department of Mechanical and Process Engineering the Sirindhorn International Thai-German Graduate School of Engineering(TGGS)King Mongkut’s University of Technology North BangkokBangkokThailand Center for Composite Materials International Research CenterKalasalingam UniversityKrishnankoil-626126Tamil NaduIndia

Tamarind fruit shell powder(TFSP)with particle size of<50μm(obtained from cleaned tamarind fruit shells)was modified with in situ generated copper nanoparticles(CuNPs)by simple one step hydrothermal *** modified TFSP... 详细信息

Tamarind fruit shell powder(TFSP)with particle size ofbtained from cleaned tamarind fruit shells)was modified with in situ generated copper nanoparticles(CuNPs)by simple one step hydrothermal *** modified TFSP was characterized by scanning electron microscope(SEM),Fourier transform infrared(FT-Ir)spectroscopy,X-ray diffraction(XrD),thermogravi-metric analysis(TGA)and antibacterial *** generated stable CuNPs on the surface of the modified TFSP were spherical in shape with an average size of 88 *** FT-Ir spectroscopy analysis indicated the involvement of the functional groups of the TFSP in the generation and stabilization of the *** XrD analysis indicated the presence of both CuNPs and Cu 2 O nanoparticles in the modified *** thermal analysis indicated the presence of 5.6 wt%of copper nanoparticles as calculated from the difference of residual char content between the un-modified and modified *** modified TFSP with in situ generated CuNPs exhibited obvious antibacterial activity against both the Gram negative and Gram positive bacteria and hence can be considered as low cost filler in the preparation of antibacterial polymer hybrid nanocomposites for packaging and medical applications.

关键词： Tamarind fruit shell powder Modification In situ generation Copper nanoparticle Antibacterial activity