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The characteristics and the design factors of wireless sensor network node are talked in this article. According to the design factors of wireless sensor network, this article will mainly point out the design of wireless sensor nodes based a Cortex-M3 Microcontroller STM32F103RE chip. And the wireless...

The paper presented the design and implementation of the multifunctional smart power socket based on Cortex-M3 kernel STM32F103 MCU, using Zigbee technology for network communication and FreeRTOS as task scheduling management. The hardware design and software framework of smart power socket are described....

For its special characteristics of water quality, the biological treatment technology for waste leachate and other special sewage is not yet mature. The study took advantage of the characteristics of the UASB reactor and improved the type of three-phase separator, in order to degrade organic pollutants...

This paper presents the design of airborne flight data recorder based on the ARM Cortex-M3. Aiming at the growing complexity of flight parameters and the increasing amount of data storage needs, we propose the method which uses a SD card as recording body and STM32F103ZET6 as the CPU for the airborne...

Surveys on Po-210 and Pb-210 levels in atmosphere in China were reviewed, and the average concentration of Po-210 and Pb-210 in atmosphere were 1.7 mBq/m3 (ranging from 0.12 to 9.4 mBq/m3) and 0.70 mBq/m3(ranging from 0.03 to 1.83 mBq/m3) respectively, which are apparently higher than that the world...

The LNG (Liquefied Natural Gas) cabin is a key component in the maritime transport of -163 LNG. The cryo-insulation performance of cabin directly affects the security of LNG transport greatly. Based on a 10000m3 LNG ship, two structural schemes of the LNG cabin are certain, which include their materials,...

With the speedy development of modern industry, the technology of wastewater treatment plays an essential role in the research of environmental protection science. The tech of Pulsed Arc Electrohydraulic Discharge (PAED) has been intense researched by virtue of its marked treatment effect, low power...

As a new type of modified fiber, model steel fiber has both the appearance and function of steel fiber and the advantages of synthetic fiber. In order to make up for the mechanical properties of rubber concrete, the basic mechanical properties of C30 model steel fiber content reinforced rubber concrete,...

Based on the newly developed concept of the rainwater utilization potentiality in urban area (RUPUA), RUPUA at the research site including the Beijing Olympic Park is estimated as 2,230,000 m3. Three measures were taken for increasing the rainwater utilization: sunken lawns, permeable bricks and water...

In this paper, the performance of biological method for the purification of high concentration formaldehyde waste gas was studied. The experimental results show that when the concentration of formaldehyde in the exhaust gas is from 100mg/m3 to 350mg/m3, the removal efficiency increases, and the removal...

As the development of spacecraft, the multi-system leak detection is needed. The multi-system leak detector on spacecraft by QMS (quadrupole mass spectrometer) has been developed and it has been used in the new spacecraft successfully. The problem of repeat and reliability of QMS in long time is avoided....

In the present study, two stages of upflow anaerobic filters (UAF) were applied and the performance efficiency of UAF reactor was evaluated for rural domestic wastewater treatment under different operational conditions such as temperature (T), hydraulic retention time (HRT), acidity (pH) and different...

Monosodium glutamate (MSG) wastewater is a very refractory case of high strength organic wastewater. To investigate the effect of operating variables on treatment of MSG wastewater, a laboratory scale study was conducted. The treatment of MSG wastewater was studied by UASB-A/OMBR process. The effect...

This design uses Wifi control the movement of the car, the speed acquisition, temperature acquisition and monitoring of video image. The car controller uses microcontroller LPC1768,which is 32-bit, single cycle, support reduced instruction set and has rich resources of peripherals and high-speed processing...

In Northern China, most traditional heating systems, heated by mini-stove in the kitchen, usually take agricultural residues as fuels resources. Besides, burning cave under the ground-floor of a rural house is also widely used. Exhausted flue gases from these heating systems contain many harmful components...

The traditional reinforcement method of highway tunnel lining crack is difficulft to constuct and brings about structure damage. The reinforcement method of new steel strip with carbon fiber and crack perfusion not only constructs simply, but also brings less destruction to the lining structure and has...

Background: Central aortic pressure (CAP) is important for the determination of the cardiovascular risk. Transfer function (TF)-based techniques allow for estimating CAP non-invasively from pressure waveforms acquired distally in the circulation. However, TF-based CAP might preserve the high frequencies...

This paper designs smart home electricity management system based on power line carrier communication. Firstly, the paper makes the ARM Cortex-M3 as a central controller and ports the uC/OS-II operating system on the ARM, then designs Web Serve program to mornitor and control equipment remotely using...

The process of gas-liquid two-phase flow of an IC anaerobic reactor (25L) was simulated by fluent software. Inner Cycle Flow Rate (QIC) under different volume loading rate(OLR), ratios of riser diameter to reactor diameter(Dr/D), ratios of reactor height to diameter (H/D) were investigated respectively....

More and more people are concerned about flood control and disaster mitigation. Beiyun River, as one of five river systems in Beijing, its flood control capacity play a critical role in urban flood control and disaster mitigation. Hence, the research on the relationship between the Beiyun River's rainfall...

A set of onshore ballast water treatment equipment utilizing micro-pore ceramic filtration (MPCF) and UV radiation (MPCF&UV) system was designed and set up with a maximum flow rate of 80 m3•h 1. Technical feasibilities of MPCF&UV system were evaluated in three areas: removal efficiencies of indicator...

A total design scheme for the high compression ratio methanol engine electronic control unit (ECU) was developed. Chosen the ARM Cortex-M3 based microcontrollers LPC1766 as the main controller of electronic control system, then the signal processing circuit module, main controller system circuit module,...

For the rolling mill torque telemetry system, the battery power supply has a short duration, and the current supply by the collector ring can achieve long-term power supply, but it is difficult to achieve stable power supply for a long time due to limitations such as speed and wear. This paper designs...

Uniaxial tension capacity was tested on the two groups of PVA reinforced cement composite with fly ash and silica fume. The results indicate the specimen mixed with Grade I fly ash has higher tensile strength and better strain hardening ability. Compared with the specimen without silca fume, the initial...

In this paper, the major research contents include improving the properties of phenolic foams through making urethane oligomer modifiers. Various characterization methods were adopted to analyze the properties and microstructure of phenolic foams. Finally, a new type of phenolic foam, which has good...

The main objective of this research is to assess the harvesting capacity of the deep rainwater harvesting wells as one of the solutions to prevent the ground water crisis. Water is life, for present and future generations. Groundwater is a renewable natural resource; however, over exploitation can cause...

The Intelligent Self-Service Cabinet is an important device which developed for convenient delivery of fresh distribution fields. In order to meet the needs of the users, this paper is based on Cortex-M3 to cater the design requirements of the Intelligent Self-Service Cabinet. The Host-Controller communicates...

In order to understand the mechanical characteristics of foam concrete backfill steel corrugated pipe culvert, this paper uses numerical simulation to analyze the mechanical characteristics of foam concrete and pipe culvert structures with different backfill methods. The results show that when using...

A total of 60 cylindrical specimens with density of 425 kg/m3, 525 kg/m3, and 625 kg/m3, subjected to uniaxial compression were tested, under four different strain rates ranging from 10-5/s to 10-2/s. 15 specimens designed and casted on the same condition were tested for every set of case. The mean and...

Application of livestock wastes during three years has exerted generally positive influence on humus storage. Pig effluents application assisted in storing the total forms of nutrient elements in comparison to the bench-mark data and control. The more significant storage of nutrient elements in soil...

To better understand the characteristic and speciation of PM2.5 pollution in US, three American cities (including Taft; St. Bernard; Chase) were selected for monitoring in Cincinnati, Southwest Ohio from 2003 to 2013. Chase has similar levels of PM2.5 and speciation as Taft. St. Bernard both had higher...

The annual allocation, inter-annual variation and relationship of water diversion and recession are analyzed in Inner Mongolia reach of the Yellow River main stream from 1999 to 2011. Water consumption in Inner Mongolia reach is calculated by method of water diversion-recession and water balance. The...

The prediction of surface water resources quantity in the Danjiangkou Basin is of great significance. However, the accuracy of mid- to long-term hydrological forecasts is slightly lower compared to short-term forecasts. In order to enhance the reliability of mid- to long-term forecasts and predict water...

The earth-fill and rock-fill dam are designed to be used for long-term storage, hydropower, flood control structure. The dam is set to design against failure due to various causes that can result in releasing the water catastrophically to the downstream area as a flood hazard. The consequences of the...

For the rapid development of economy, China has seen more than 200 million kW capacity of hydropower plant installed and more than 55 billion m3 reservoir storage formed since 1950s. As a result, over 25 million resettlers have been wholly or partially affected. To displace and settle so many people...

The issue of water supply and sustainable energy is significant in dealing with clean water and energy crises in the long term. In addition, there has been a rise in water and air pollution caused by the community’s activities. Conservation strategies should be implemented to lessen dependence on the...

In this paper, two-stageASBR process composed of two anaerobic sequencing batch reactors (ASBR) was used as the reaction device to remove organic matter and ammonia nitrogen in high concentration nitrogen-containing organic wastewater,stage1 to adsorb and remove the organic matter, stage2 to remove ammonianitrogen...

With sulfur dioxide and other environmental pollution is becoming more and more serious. It is of great significance to explore an efficient, fast and clean way to remove these environmental pollutants. In this paper, the microwave plasma technology is applied in the desulfurization process. The effect...

The object of this study was to investigate the chemical compositions of PM2.5 and its correlations with the concentration of volatile organic compounds(VOCs) and meteorological parameters during severe air pollution period in Shijiazhuang, a northern city, China in winter. PM2.5 samples were collected...

Follow up on the collaboration between the Research Center for Appropriate Technology National Research and Innovation Agency with PT. Bukit Dewi Manggung, a study of the potential of micro hydro, was carried out in Rancamanggung village, Tanjung Siang sub-district, Subang district. Activities consisted...

Sharia financial literacy index in Indonesia is categorized as less literate. Religious institutions such as pesantren have potential as a means of Sharia financial literacy education and become influencers for the surrounding community. From several research results, the ability of financial literacy...

Biomass waste conversion to biogas through anaerobic digestion offers an array of benefits from disposal management, clean energy provision, and economic inclusion. Cocoa processing wastes are abundant, yet their recovery alternatives are still underexplored in Indonesia. Therefore, this study emerges...

Upstream of Junhe river basin among the mountainous region in the middle of Shandong province is deficient in groundwater resources, and the carbonate karst provides an important water supply source for this area. However, with the development of economy in the basin, much more water is consumed, resulting...

The paper presents the features of production of acoustic porous fiberglass composites: developed temperature-time modes for foam-forming mixtures, compositions of complex foaming agents for soundproof material technology, technological methods to control the porous structure of fiberglass composites...

To forecast total water demand in advance is practically important for water supply plan-ning. The paper first made impacting factors analysis of the total water demand in China and then established three models for the total water demand forecasting by multiple regression analysis. The research shows...

This paper deals with the excavation of 19500 m2 area in granitic hard rock to a depth of 10 m by controlled blasting to accommodate foundation for 75 m tall, 16 floor commercial building in the city of Bengaluru, India. The major task was to excavate granitic hard rock close to constructed residential...

In “General Provisions of Civil Law” of the People’s Republic of China, there are some important new terms such as “gongxuliangsu” (公序良俗, public policy and ethics), “bingchichengshi, keshouchengnuo” (秉持诚实，恪守承诺, uphold honesty and honor commitment) and “shanyixiangduiren” (善意相对人, the good-faith third...

According to the production process of precision forging for blank parts, to investigate the feasibility that recovering the waste heat from forging process by heat pump technology. It has designed a new cooling system by the heat hump on the basics of analyzing the thermodynamic parameters and heat...

In this research, redundant mechanism for CAN Bus communication is designed and implemented to improve reliability of the I/O modules built with CANopen profile. The STM32F107 hardware platform (Cortex-M3 core) is used in the I/O modules. These modules and main station can combine into a complex control...

The paper gives a general characteristic of coal refuse processing products: intermediate fraction - coal-free screenings; small fraction - carboniferous sand containing up to 30% coal; fine fraction - silt coal containing up to 50% coal. Green and baked ceramic properties of products of processing waste...