TL;DR: A quantitative function for community partition, named communitarity or C value, is proposed and it is demonstrated that the quantitative is superior to modularity Q and modularity density D.
Abstract: Detecting and characterizing the community structure of complex network is fundamental. We compare the classical optimization indexes of modularity and modularity density, which are quality indexes for a partition of a network into communities. Based on this, we propose a quantitative function for community partition, named communitarity or C value. We demonstrate that the quantitative is superior to modularity Q and modularity density D. Both theoretical and numerical results show that optimizing the new index not only can resolve small modules, but also can correctly identify the number of communities.
TL;DR: The working principle and the main movement parameters of globular indexing cam mechanism are analyzed, and the dynamics simulation of this mechanism is done by using ADAMS dynamic simulation software to analyze the influence of size parameters on the transmission performance.
Abstract: The globular indexing cam mechanism is a kind of high-speed and high-precision indexing mechanism, widely used in the field of mechanical transmission, which has the character of smooth transmission, high-precision indexing, large transfer torque, wider choice of dynamic and static ratio, simple structure and low cost, etc. In this paper, the working principle and the main movement parameters of globular indexing cam mechanism are analyzed, and the dynamics simulation of this mechanism is done by using ADAMS dynamic simulation software to analyze the influence of size parameters on the transmission performance, which provides reliable theoretical basis for understanding the property and designing the parameter of globular indexing mechanism.
TL;DR: In this paper, the authors established an input-output model on cement plants and calculated carbon dioxide emissions of key steps and carbon footprint of products using the input output model and showed that CO2 emission in the plant (the production of the plant is 1320000t a year) reached 910000 t a year and CO2 emissions per ton product is 0.689 ton.
Abstract: Input-output model on cement plants were established. Carbon dioxide emissions of key steps and carbon footprint of products were calculated and predicted using the input-output model. The results showed that CO2 emission in the plant (the production of the plant is 1320000t a year) reached 910000 t a year and CO2 emission per ton product is 0.689 ton. Over 80% of the total CO2 was emitted during the process of firing,so the firing process is the key step for reducing CO2 emission in the cement plant. Carbon footprint of three kinds of cement products including ordinary portland cement, portland pozzolan cement and portland blast furnace slag cement are 0.76, 0.59, 0.72 respectively.
TL;DR: Yang-Fourier transform as mentioned in this paper is a generalization of the fractional Fourier transform of non-differential functions on fractal space, and it can be applied to local fractional equations.
Abstract: Yang-Fourier transform is the generalization of the fractional Fourier transform of non-differential functions on fractal space. In this paper, we show applications of Yang-Fourier transform to local fractional equations with local fractional derivative and local fractional integral
TL;DR: In this article, the authors present an investigation on lightweight foamed concrete (LFC) with different type of additives and show that the drying shrinkage, compressive strength and flexural strength are affected by the hydration process of each additive in the harden LFC.
Abstract: This paper presents an investigation on lightweight foamed concrete (LFC) with different type of additives. LFC with 600, 1000 and 1400 kg/m3 density were cast and tested. Fly ash, lime and polypropylene fibre were used on each density with different percentages. All the additives effects were compared with normal LFC as control mix. Mechanical properties of LFC were evaluated with several tests up to 180 days. The results show that the drying shrinkage, compressive strength and flexural strength are affected by the hydration process of each additive in the harden LFC. Fly ash as pozzolanic material helps to strengthen the LFC, though it needs longer curing period to achieve ultimate strength. Lime gives slight contribution to strength as detail investigation on microstructure formation will give clear answer on how the mechanical properties were affected. The addition of polypropylene contributes to flexural strength and shrinkage of LFC. Polypropylene fibre only contributes to compressive strength at low LFC density.
TL;DR: In this article, a microencapsulated phase change materials (microPCMs) contain paraffin was fabricated by in-situ polymerization using methanol-modified melamine-formaldehyde (MMF) as shell material.
Abstract: Microencapsulated phase change materials (microPCMs) contain paraffin was fabricated by in-situ polymerization using methanol-modified melamine-formaldehyde (MMF) as shell material. The shell of microPCMs was sooth and compact with global shape, its thickness was not greatly affected by the core/shell ratio and emulsion stirring rate. More shell material in microPCMs could enhance the thermal stability and provide higher compact condition for core material. After a 100-times thermal cycling treatment, the microPCMs contain paraffin also nearly did not change the phase change behaviors of PCM. With the increasing of weight contents of microPCMs in gypsum board, the thermal conductivity (λ) values of composites had decreased. The simulation of temperature tests proved that the microPCMs/gypsum composite could store the time-dependent and intermittent solar energy, which did not necessarily meet the energy needs for space heating at all times.
TL;DR: Tapioca starch was chemically modified with urea in the presence of borate as crosslinker and catalyst, and Fourier transform infrared (FTIR) and viscosity were performed to measure qualitatively the reactivity of the mixture.
Abstract: Tapioca starch was chemically modified with urea in the presence of borate as crosslinker and catalyst. Fourier transform infrared (FTIR) and viscosity were performed to measure qualitatively the reactivity of the mixture. To improve the hydrophobicity, 10% of lignin (10%L) was then added into the starch-urea-borate (SUB) system. The incorporation of lignin leads to lower water uptake film. It was found that lignin retards the urea release and the SUB10%L film is stable and stayed intact for one month after immersing in water which shows high potential as a biopolymer for slow release fertilizer.
TL;DR: In this paper, the chemical and engineering processes for encapsulation of fragrances and flavors are discussed, and different coating materials and their application are depicted, as well as the different methods used for different types of encapsulation.
Abstract: Fragrance and flavor are valuable ingredients in toiletries, cosmetics and foods. They play a very important role in these products. However, fragrances and flavors are complex mixtures of comparatively volatile substances and labile components of which the sensory perception can be changed as a result of heating, oxidation, chemical interactions or volatilization. Microencapsulation technology is an effective method to minimize the harm of these problems. Encapsulation of fragrances or flavors has been attempted using various methods. In this paper, the chemical and engineering processes for encapsulation of fragrance and flavor are discussed. The different coating materials and their application are depicted.
TL;DR: In this paper, the influence of the silica fume on the adhesion of reactive powder concrete (RPC), as a concrete restoration material, with the ordinary concrete (OC) substrate was investigated.
Abstract: The weak interfacial transition zone between new and old concrete is always paid much attention and controls many properties of repaired concrete, The present work reports a study on the influence of the silica fume on the adhesion of reactive powder concrete (RPC), as a concrete restoration material, with the ordinary concrete (OC) substrate. The results showed that, the silica fume presence in the interfacial transition zone significantly enhances the adhesion strength between RPC and OC substrate. Furthermore, the silica fume particles consume calcium hydroxide, which is in attendance in the interfacial transition zone, and make the zone more dense, uniform and tough.
TL;DR: In this article, the effect of ultrasonic vibration and the electrolyte level on the performance of gravity-feed drilling by ECDM was investigated, where a tungsten rod as a tool electrode was fed by gravity.
Abstract: Electro-chemical discharge machining (ECDM) is one of nontraditional processes for micro-fabrication of non-conductive materials. A high applied voltage is preferable to form a gas film and to generate discharge in the film. However, accumulation of discharge heat often causes cracks of the surface because non-conductive materials have low heat conductivity. In this study, the effect of ultrasonic vibration and the electrolyte level on the performance of gravity-feed drilling by ECDM was investigated. Ultrasonic vibration was applied to a glass plate. A tungsten rod as a tool electrode was fed by gravity. Ultrasonic vibration changed the discharge behavior and improved electrolyte circulation. Although high amplitude ultrasonic vibration caused very dense and wide current pulses consistently during machining process, it decreased removal rate significantly. In addition, electrolyte levels affect single bubble size and the resistance in the electrolyte. Low electrolyte level will cause higher resistance, and higher temperature of the tool electrode and workpiece. A high bias current flew at a low electrolyte level without ultrasonic vibration. In this case, removal rate decreased and surface integrity was improved.
TL;DR: The article suggests and summarizes actual development in robotics, which is heavily focused on the service and humanoid field in many applications, and refers to its fundamental properties, which has current industrial robots.
Abstract: The article deal about the development in the field of robotic research. The introduction suggests and summarizes actual development in robotics, which is heavily focused on the service and humanoid field in many applications. Next section of contribution is dealed to the development and is referred to its fundamental properties, which has current industrial robots.
TL;DR: In this article, low field-nuclear magnetic resonance (LF-NMR) was employed to evaluate water mobility and distribution in beef granules during drying process due to its fast and nondestructive detection.
Abstract: Low field-nuclear magnetic resonance (LF-NMR) was employed in this study to evaluate water mobility and distribution in beef granules during drying process due to its fast and nondestructive detection. Beef granules were dried in a blast drying oven at different temperatures (40, 50 and 60 °C) to a final moisture content around 21% after cooking. Results showed that it took about 150, 90 and 60 min for the samples dried at 40, 50 and 60 °C to get to the drying destination, respectively. The immobilized water was transformed into bound water with lower association degree and free water during drying at different conditions. Drying also resulted in a proportion increase of bound water; what’s more, the proportion of bound water is the largest when drying at 50 °C compared to 40 and 60 °C. After the drying destination was reached, the transverse relaxation time for bound water and immobilized water appeared significant change. It revealed that LF-NMR was an effective tool to assess water mobility and distribution during food drying process.
TL;DR: An improved algorithm was developed based on the artificial fish swarm algorithm (AFSA) and invasive weed optimization (IWO) and it presented better ability in leaping over the local extremum and enhancing local exploration, and can void blind searching in the later evolution period.
Abstract: An improved algorithm (AFSA-IWO) was developed based on the artificial fish swarm algorithm (AFSA) and invasive weed optimization (IWO). It introduces IWO, and improves its mechanism of the competitive exclusion to meet practical application. Convergence analysis was performed with some typical benchmark test functions and comparison was made with AFSA. At the same time, it uses the AFSA-IWO to optimize the PID parameters. The results showed that the approach presented better ability in leaping over the local extremum and enhancing local exploration, and can void blind searching in the later evolution period. So it is a global optimization algorithm with good feasibility and high efficiency.
TL;DR: In this article, the main demand on methods of cutting is provision of high productivity production and attainment of desideration of finish surface; it is known, that cutting property of cutting tool is influence by many factors.
Abstract: Development of cutting tools is basic condition for rationalization of process cutting because it goes out from need of processing new constructional materials. From view of tool it takes application progressive cutting materials. Cutting tools so relevantly make for accomplishment main demand on methods of cutting; it is provision of high productivity production and attainment of desideration of finish surface. It is known, that cutting property of cutting tool is influence by many factors.
TL;DR: In this paper, a low-power wind turbine was used to serve a real telecommunication site located near Palermo, the main city of Sicily (Italy) in order to power a TLC.
Abstract: The ever increasing problems related to air pollution and the difficulties for power lines to reach inaccessible areas are pushing to find new solutions for powering telecommunications equipments (TLC). The renewable energy systems, although relatively expensive, have the required characteristics. The purpose of this work is to find a solution based on a low power wind turbine to serve a real telecommunication site located near Palermo, the main city of Sicily (Italy).
TL;DR: In this article, the most considerable sources of polycyclic aromatic hydrocarbons are combustion engines, thermal plants, production and distribution of products as pesticides, detergents, conservation matters, refuse inciferating plants, pyrolysis processes, coke production, cigarette gas, coal gasification.
Abstract: Polycyclic aromatic hydrocarbons are the component of the exhaust gases, from which some are characterized by carcinogenic and mutagenic properties. The most considerable sources of polycyclic aromatic hydrocarbons are combustion engines, thermal plants, production and distribution of products as pesticides, detergents, conservation matters, refuse inciferating plants, pyrolysis processes, coke production, cigarette gas, coal gasification. In consequence those matters from the atmosphere are accordied to earth, where they are cumulated, thereat bold increasing of aromatic hydrocarbons concentration is chronicled. The most dangerous from them is benzo(a)phyrene. If the polycyclic aromatic hydrocarbons are get into live organisms, reagents with their structure at formation epoxides and thiolepoxides. These matters liaise to DNA, corrupted their structure and this fact induces cancer formation. The sorption possibility of natural zeolite – clinoptilolite, also its modified forms was observed in regard to some species of polycyclic aromatic hydrocarbons.
TL;DR: In this paper, the use of fiber in lightweight foamed concrete (LFC) to produce the lightweight concrete for use in construction of non-load bearing elements was discussed. But the addition of fibres in LFC showed no contribution on compressive strength but improvement in the flexural and shrinkage test results.
Abstract: The present study covers the use of fibre in lightweight foamed concrete (LFC) to produce the lightweight concrete for use in construction of non-load bearing elements. LFC with 600, 1000 and 1400 kg/m3 density were cast and tested. Polypropylene fibres with different percentage were used into LFC and the resulting products were compared to normal LFC. Compressive strength, flexural strength and drying shrinkage tests were carried out to evaluate the mechanical properties up to 180 days. The addition of fibres in LFC showed no contribution on compressive strength but improvement in the flexural and shrinkage test results.
TL;DR: In this paper, the structural and morphological properties of ZnO/CeO2 nanorods were confirmed by X-ray diffraction and high resolution scanning electron microscopy (HR-SEM).
Abstract: Nanorods of ZnO/CeO2 were synthesized by thermal decomposition method. The decomposition temperature and formation of composite material were confirmed by the thermogravimetric analysis (TGA) before the synthesis process. The prepared samples were characterized by different techniques. The structural and morphological properties of ZnO/CeO2 nanorods were confirmed by X-ray diffraction (XRD) and high resolution scanning electron microscopy (HR-SEM). The chemical composition and specific surface area analysis were done by energy dispersive X-ray spectroscopy (EDX) and Brunauer–Emmett–Teller (BET) method. Further the catalyst was used for photocatalytic degradation of organic dye under visible light irradiation
TL;DR: In this article, the ultrafine palm oil fuel ash was used to produce high strength concrete by replacing the ordinary Portland cement at 0, 20, 40 and 60% on a mass-for-mass basis.
Abstract: Palm oil fuel ash obtained from palm oil mill was treated via screening, grinding and heating to improve its pozzolanic reactivity. The characteristics of the palm oil fuel ash before and after treatment were monitored to assess the changes in the properties of the palm oil fuel ash. The resulting ultrafine palm oil fuel ash was then utilized to produce high strength concrete by replacing the ordinary Portland cement at 0, 20, 40 and 60% on mass-for-mass basis. The results show that the treatment process undertaken reduces the particle size, diminishes the unburned carbon content, while at the same time increases the glassy phases. The utilization of the ultrafine palm oil fuel ash in high strength concrete was observed to improve workability especially at higher ultrafine palm oil fuel ash content. In addition, the long-term compressive strength of the high strength concrete was significantly increased with the ultrafine palm oil fuel ash inclusion. Further, the long-term rapid chloride permeability was significant reduced especially at higher ultrafine palm oil fuel ash content of 60%, which could be translated into superior durability performance.
TL;DR: The theoretical understanding suggests that geotourism relates tourism and geology in such a way that the public can experience the earth's geological wonders with environmental and cultural understanding, appreciation, and conservation through formal and informal education as discussed by the authors.
Abstract: The theoretical understanding suggests that geotourism relates tourism and geology in such a way that the public can experience the earth’s geological wonders with environmental and cultural understanding, appreciation, and conservation through formal and informal education. With proper enforcement emplaced, this idea of protection through usage should lead to an increase in ecological and socio-cultural awareness and behaviour among geotourists and local guardians of geological heritage. In the prospect of geotourism, geotourists and local public are related in a way that the former play its part in geoheritage conservation through visiting geological heritages while expenditures spent by geotourists contributed to the gross income of the latter and partially to the nation through various tax structures. These economic benefit as well as environmental incentives of geotourism would encourage local public to embrace into geotourism industry and geoheritage conservation. Thus, when these mechanisms work perfectly, geotourism will offer one realistic key solution to the apparent conflict between environmental and cultural protection, and economic growth.
TL;DR: In this article, the internal resistance characteristic of the power type lithium-ion battery are tested with HPPC (hybrid pulse power characterization) method, the relationship curves between the capacity or internal resistance of the battery and temperature are given, the temperature properties of the capacity and the ohmic resistance of battery are obtained, and the basis of online resistance identification and peak power computation for the battery pack is provided.
Abstract: The real time power prediction of power battery pack used in electric vehicles is a difficulty of the battery management system. The internal resistance characteristic of the battery can be used to achieve the prediction of battery power based on the close relationship between the value of real time power and internal resistance. In this paper, the internal resistance characteristic of the power type lithium-ion battery are tested with HPPC(hybrid pulse power characterization) method, the relationship curves between the capacity or internal resistance of the battery and temperature are given, the temperature properties of the capacity and the ohmic resistance of the battery are obtained, and the basis of online resistance identification and peak power computation for the battery pack is provided.
TL;DR: In this article, the authors provide an overview on the current status of power generation in China using coal gangue and the government regulation towards the use of coal gangUE for power generation is introduced.
Abstract: This paper provides an overview on the current status of power generation in China using coal gangue. The government regulation towards the use of coal gangue for power generation is introduced. Emission of pollutants and low thermal power plant efficiency are the two major problems for the power industry firing coal gangue. Particulate matter emission control is a problem due to the high ash content. Sulfur emissions from these units are easily controlled mostly through lime/limestone injection and in-situ capture. Overall, efficient power generation using coal gangue is a promising approach to reduce the use of coal resources and reduce the environmental impacts.
TL;DR: In this article, the results of experimental investigation on the characterization and analysis of mechanical properties of composites formed were presented, where three aluminum metal matrix composites reinforced with 10 wt% of B4C, SiC and Al2O3 particles were processed.
Abstract: The paper presents the results of experimental investigation on the characterization and analysis of mechanical properties of composites formed. Three aluminum metal matrix composites reinforced with 10 wt% of B4C, SiC and Al2O3 particles were processed. The stir casting method followed by hot rolling was used for fabrications of aluminium 7075 metal matrix composites, being one of the cost effective industrial methods. Experimental results show nearly a uniform distribution and good dispersion of reinforced particles within aluminium matrix. Both tensile strength and hardness are enhanced by incorporation of reinforcement particles into the matrix. Scanning electron microscope (SEM) analysis was done to study the good dispersion of particles and surface characteristics.
TL;DR: In this paper, the mechanical properties and microstructure of modified mortar and concrete using Carbon NanoTubes (CNT) were experimentally studied at 7, 14, 28 and 90 curing days.
Abstract: The mechanical properties and microstructure of modified mortar and concrete using Carbon NanoTubes (CNT) are experimentally studied at 7, 14, 28 and 90 curing days. Part of the formulation, CNT are dispersed in a liquid solution. Different concentrations ranging from 0.01% to 0.06% and 0.003% up to 0.01% are used for mortar and concrete, respectively. Mechanical testing of the modified materials reveals that maximum compressive strength is obtained for CNT concentrations close to 0.01%wt and 0.003%wt for mortar and concrete, respectively. The microstructural characterisation of the modified materials suggests that CNT act as bridges between pores and cracks leading to a reduction in porosity and in turn an increase of compressive strength.
TL;DR: In this article, the IRb60 robot with modernized computer control system was used to produce polystyrene foam and turning polyurethane foam using stationary, rotational and inject tools.
Abstract: Paper describes the robots employment to surface manufacturing. In experiments were used IRb60 robot with modernized computer control system. Presented examples of robots using with stationary, rotational and inject tools. Stationary tools were used to cutting polystyrene foam and turning. Rotational, tool with its own drive, was used to milling and grinding mould surface. Inject tool was used to rapid prototyping using polyurethane foam.
TL;DR: Utilization of molasses as the carbon source for the production of bacterial cellulose would have an advantage over pure sugars from the commercial point of view.
Abstract: Cellulose producing bacterial strain was isolated from orange pulp. The isolated strain was identified to be Gluconoacetobacter intermedius NT based on several morphological characteristics, biochemical tests and 16S r-DNA analysis. Bacterial cellulose production by the isolated bacterial strain was maximum in Hestrin and Schramm (HS) and modified HS media (8.5 and 10 g /L, respectively) following cultivation under static conditions for 10 days. Modified HS medium containing 40 ml/L of heat pre-treated molasses as the sole source of carbon facilitated significant production of cellulose (3.5 g/L) by the bacterial isolate. Utilization of molasses as the carbon source for the production of bacterial cellulose would have an advantage over pure sugars from the commercial point of view.
TL;DR: A improved LEACH algorithm which refers to remaining energy and optimal cluster heads is presented and it is revealed that the proposed protocol reduces the energy consumption compared with the existing LEACH protocol.
Abstract: The data transfer of wireless sensor network (WSN) can not be separated with routing protocol, Energy efficiency is one of the most important factors in wireless sensor networks. In this paper based on the uneven distribution of the LEACH cluster head and the different lengths and base station communications, we present a improved LEACH algorithm which refers to remaining energy and optimal cluster heads. Computer simulation using NS2 reveals that the proposed protocol reduces the energy consumption compared with the existing LEACH protocol.
TL;DR: In this article, a combined technique of electrocoagulation coupled with ultrasound was proposed to treat the car-washing water for reuse, and the effects of parameters (such as current intensity, initial pH, electrode distance (d), treatment time (t), and so on) on the removal efficiency of COD and turbidity in the wastewater were studied.
Abstract: To reduce the water consumption and pollution in car-washing, a combined technique, i.e., electrocoagulation coupled with ultrasound, was proposed to treat the car-washing water for reuse. The effects of parameters (such as current intensity (I), initial pH, electrode distance (d), treatment time (t), and so on) on the removal efficiency of COD and turbidity in the wastewater were studied. The results indicate that the removal efficiency of COD and turbidity is maximum (68.77% and 96.27%, respectively) when I=1.2 A, pH=6.0, d=1.5 cm, and t=20 min. The quality of treated wastewater could meet the COD and turbidity requirements in Water Quality Standard for Urban Water Consumption. Meanwhile, the character of the reaction cell was studied, and it shows that the cell voltage is a linear function of the electrode distance when the current is constant. Compared with the removal rate of pollutants from car-washing wastewater by the single electrocoagulation method, a higher rate could be achieved by this combined technique.
TL;DR: The general components and the mathematical model of some more important neurons and one numerical simulation of the linear neural network are shown and the least mean square (LMS) error algorithm is used for adjusting the weights and biases and incremental training by different training rate.
Abstract: In the optimization of the trajectory or of the guidance of mobile robots one of the more important things is to assure one small difference between the output data of the system and the target This paper show how on-line will be possible to establish one convergence way to the target without any influences of the input data or initial conditions of the weights or biases The paper show the general components and the mathematical model of some more important neurons and one numerical simulation of the linear neural network In the paper was used the least mean square (LMS) error algorithm for adjusting the weights and biases and incremental training by different training rate, finally to obtain one minimum error to the target
TL;DR: In this paper, the potential health risk of the heavy metals to adult males, adult females and children was estimated using non-carcinogenic health risk assessment model: Hazard Quotient (HQ) and Hazard Index (HI).
Abstract: In the present study, concentrations of heavy metals (Cu, Zn, Pb, Cd) in soil and wheat grains of the agricultural areas around Baiyin, a non-ferrous metals mining and smelting base, were detected. Meanwhile, the potential health risk of the heavy metals to adult males, adult females and children was estimated using non-carcinogenic health risk assessment model: Hazard Quotient (HQ) and Hazard Index (HI). The results showed that only the level of Cd in all soil samples exceeded the permissible limit of the environmental quality standard for soil, and its average level surpassed the standard value by 4 times. In wheat grains, the levels of Pb and Cd were 50 times and 8 times of the limited values of hygienic standard for grain respectively, while Cu and Zn concentrations did not surpass the standard value. The potential health risk due to single heavy metal for all the three investigated populations followed the sequence of HQPb>HQCd>HQCu>HQZn>1 (assumed the local inhabitants wholly food on wheats), suggesting that each of the four heavy metals were making negative effect on population health, of which the situation of Pb and Cd should be paid more attention due to their significant adverse effect. The total potential health risk due to the four heavy metals followed the sequence of HIchildren>HImales>HIfemales>1 (assumed that the health risk due to the four heavy metals is additive), suggesting that the heavy metals were producing adverse effect on population health, and were especially hazardous for children. According to the research results, the government is suggested to strictly control the quality of irrigation water and remove the heavy metals from agricultural soil in order to ensure the safety of foodcrop production and local inhabitants.