Wind turbine power curve essentially captures the wind turbine performance which shows the relationship between the wind turbine energy output and hub height wind. This paper presents a reasonable method to model power curve of a wind turbine, and compares with measured power curve based on IEC61400-12....

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...

On the basis of the traditional linear programming model,this paper presents a optimal design mathematical model of gravity branch distribution network. Considering the coupling constraint, the model takes the length of main and subordinate pipe having standard diameter as decision variables. The minimum...

A novel external stimulation oscillator was recommended and its characteristics of high efficiency and easy oscillation were proved by CFD simulation and experiment. The superiority and difference of process mechanism of the oscillator compared with self-stimulation oscillator were analyzed. The geometric...

A series of organic quaternary ammonium bromide with varying carbon chain length in alkyl group were investigated as the catalyst for CO2/PO cycloaddition. When the length of the single-chain in alkyl tributyl ammonium bromide increased from 2 to 16 progressively, the catalytic activity first increased...

The engineering measures and non-engineering measures are the two complementary supports of mountain torrent disaster control. Through a series of approaches such as danger control and reinforcement, regulation construction, management system reform in recent years, reservoirs as the traditional sense...

With the external micro-jet to stimulate main jet flow to generate multi-stage oscillation and get time-averaged pulse, a novel high-efficiency jet mode of static gas wave refrigeration is proposed. Investigation made by CFD indicates that the loss of total pressure is less than 45% of that of the self-excited...

Based on the operation of a Ground Source Heat Pump (GSHP) in Hefei, the heat exchange of the 100m depth vertical u-shaped pipe buried in the ground was analyzed, and the heat transfer performance, efficiency of the system and temperature variation of the ground were studied experimentally under the...

Combined with the ground-source heat pump engineering in Hefei, a 100-meter-deep vertical u-shaped buried pipe was analyzed, and the experimental study on the heat transfer performance of different operating mode, the unit energy efficiency and the change of soil temperature field was taken under a typical...

Metal-organic frameworks (MIL-100)/graphene oxide composites (MOFs/GO) with different graphene oxide (GO) contents were prepared under hydrothermal conditions. The resultant products were then characterized by powder X-ray diffraction, infrared spectra, thermogravimetric analysis and nitrogen adsorption...

The experimental study on desorption for carbon dioxide is based on the phenomenon that pouring mints into coke can form coke fountain. In this study, the commonly used liquid monoethanolamine (MEA) was assumed as the absorbent for carbon dioxide, then the mint and its main compositions such as glucose,...

Dahaize coal mine was located in Maowusu desert and the buried depth of coal seam was relatively large. The excavated main slope passed through the following stratums, such as Quaternary, Jurassic, Cretaceous, and so on. And the differences of rock mechanics characteristic were very obviously. In the...

This paper is focused on the situation that the by-product ammonium sulfite produced in the flue gas desulfurization of ammonia process,which carried ozone oxidation experiments. In the reaction container, studied the effect of the factors as oxidation reaction temperature, pH value, ozone flow and initial...

Basin management is a kind of protection and management activity for water environment with watershed as the basic unit. The cross-border property of watershed promotes the formation of trans-boundary water environment management in a basin. Referring to some related experience abroad and combining with...

The simulation model of the large bus was verified by real vehicle test, and simulation test of GB/T6323-2014 was carried out, and the safety and compatibility of the test and square were analyzed. The results show that the controllability and stability test can be completed in the square, but part of...

Flame-retardant epoxy resin composites were prepared via in situ polymerization of diglycidyl ether of bisphenol A epoxy monomer and 4,4'-diaminodiphenyl methane, using 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide as additives. The thermal and flame-retardant properties of cured samples were investigated...

To improve the performance of one exhaust system, in the article, a exhaust system in the market was conducted by the stress analysis and optimization of the hanger. Firstly, the 3D model was built by Catia and a FEM model was built by Hypermesh , and then the calculation of the free modes were done...

With the continuous development of aeronautical an space technologies, greater demands are being placed on the aviation and aerospace engine performance. The machining accuracy of fuel injection micro hole has great influence on engine performance. The machining accuracy of micro hole is closely related...

Al2O3 ceramic has the advantages of high mechanical strength, high temperature resistance, oxidation resistance, high hardness, chemical resistance and so on, due to its brittleness,that has restricted the more wilder application. This paper introduces the research state of Al2O3 ceramic toughening,...

Construction and lifting technology of column subsection is the key to build the lower hull of tension leg platform (TLP). Reasonable block dividing and build process could reduce the fabrication of dock workload, control welding distortion and dimensional accuracy and shorten the construction period....

This research focuses on braking pad back plate of disc brake system. Firstly building original 3D model of brake pad and the prototype is manufactured , then 3D model is imported into ANSYS for modal simulation and noise bench test with prototype is conducted. To verify the validity and precision of...

Based on liquid fusion and atomic interdiffusion of TiB2-based ceramic and 42CrMo steel, the ceramic-metal laminated composites with interfacial 3D-network span-scale graded microstructures were achieved by combustion synthesis in high gravity field. The presence of respective atomic concentration gradient...

By inducing thermal explosion in high-gravity field to prepare the laminated composite of TiB2-based ceramic and Ti-6Al-4V alloy, spatial span-scale continuously-graded microstructure was achieved in interfacial region between the ceramic and Ti alloy, and the formation of the interfacial microstructure...

As time enters 21st century, the world enters the era of oil scarcity, which is the so-called "post-oil era." Onshore exploration peak period has expired; the energy gap gradually expanded into the marine transfer is the trend. The main forms of offshore platforms are: jacket platforms, jack-up rigs,...

This paper conducts correctly the mechanical analysis of joints by clinching for various values of module and process parameter. The force of tensile and shearing of the joint by clinching in AL5052 sheets were analyzed; the theoretical calculation formulas of the shearing and tensile force were deduced...

The monitoring and control system of tower crane is an embedded system which is based on the CRIO module and LabVIEW platform. It can monitor the work condition parameters and control the executing elements of tower crane. The embedded system configures CAN bus driver module and CAN node field detection...

Deep water gravity jacket is a type of offshore steel structure developed in 1970s. Design depth of the type jacket is in 200m and 100~150m water depth is better. Now some foreign countries have the fabrication experience of the type jacket, however there is none fabrication experience in China. This...

Polyphenols, flavonoids, triterpenoid and VitaminC from Clinacanthus nutans were extracted by microwave-assisted extraction (MAE) technology. The optimal extracting conditions were established as distilled water as solvent, solid-liquid ratio 1:45 (g/ml), irradiation power 160W, and every extraction...

Hydrogenated amorphous silicon carbide thin films (a-SiC: H) were deposited by decomposition of SiH4 and CH4 gas mixtures at 200 0C. Chemical bonding configuration measurements by Fourier transform infrared absorption spectroscopy show that there are SiHn (n=1,2,3), C-SiH, non-hydrogen Si-C, Si-CH3,...

Iron–doped lanthanum stannate (Fe–La2Sn2O7, simplified as Fe–La) was prepared firstly and used as a synergistic agent of the intumescent flame retardant (IFR, the mixture of ammonium polyphosphate (APP) and pentaerythritol (PER) with mass ratio of 2:1) for polyphosphate (PP). The limiting oxygen...

Split appeared after initial interaction between honeycomb core and projectile debris when projectile hypervelocity impact on honeycomb sandwich panel. In order to investigate the split characteristics of projectile debris, a 3D simulation model of projectile hypervelocity impact on honeycomb sandwich...

In this study, we utilize EDC/NHS as catalyst to graft Single carboxyl porphyrin molecules onto acidized chitosan for synthesis of porphyrin-functionalized chitosan composite(PFCC) and testified its structure by FT/IR. In liquid phase, we identified the formation mechanism of molecule microsphere with...

Using laser scanning system for preparation of abutment body of data acquisition and accuracy analysis for the reconstruction of 3D laser scanner abutment preparations and by the method of reverse engineering established the 3D digital model of the simulated abutment, using professional software to simulation...

Alloy composition of thin strip Solidification Microstructure Effects of larger, Al-8.5Fe-1.4V-1.7Si and Al-11.7Fe-1.15V-2.4Si alloy. At 20 m / s and wheel line speed and 0.7 x 105Pa jet pressure difference process thin slices of tissue, can see in addition to changes in grain size and a-Al grain accounts...

Hot pressing method although can effectively improve the density of the rapid hardening slice powder, but due to the rapid hardening slice heat ultrafine microstructure of aluminum alloy powder body approximately in to static pressure state, under the limited high loading stress condition, high temperature...

This paper researches the influence of laser rapid prototyping process for titanium metal crown. molding quality using the microstructure. The results show that laser rapid prototyping technology can form a uniform, defect-free titanium base crown. And than the thickness of choice is crucial, relatively...

In this study, a certain amount of rare earth metal Cerium and low melting point Arsenic were closed in the barrel-shaped cylinder machined by H08 steel, heated to 1223K,1273K and 1323K respectively for 50h, and the interaction among the cerium, arsenic and iron was studied by X-ray diffraction, optical...

An antisulphuric coating manufactured by U.S. michelman was coated on the case board to prepare antisulphuric packaging paperboard. The silver strip samples were wrapped in antisulphuric packaging paperboard under laboratory condition in a simulated extreme sulfur-containing atmosphere, then the corrosion...

This paper will discuss strengthening mechanism of ultrasonic hydroxyapatite nm from each ultrasound parameters, such as: research ultrasonic power, intensity, frequency, etc., the findings concluded that ultrasound is through a liquid medium to a solution of molecules, ions action. When the ultrasound...

In this study, seaweed kelp as the raw material, the use of ultrasound-assisted method of extraction process of total flavonoids kelp discussed. Discussion on the ethanol concentration, extraction temperature, time and other factors affecting the extraction of total flavonoids ultrasound, by orthogonal...

In order to study the reflection crack resistance of asphalt mixture, using Overlay tester, crack resistance property of five asphalt mixture types were analyzed based on the repeated loading mode. The paper analysis the influence of mixture types、temperature and volume index (void ratio) on the anti-cracking...

Objective. To evaluate effectiveness and safety of Fufang Kushen Injection combined with transcatheter arterial chemoembolization (TACE) for primary liver cancer (PLC). Search Strategy. Electronic databases were searched until 2 July, 2015. Inclusion Criteria. We included randomized clinical trials about...

The uniqueness of tie-dyeing technique lies in dealing with the fabric by the methods of sewing, binding, wrapping, knotting and sandwiching, etc, through “tying” and “dyeing” to produce the visual effects of color dyeing, the rich changeable color gradient and the folding printing and dyeing...

The noise control issue on construction machinery has received increasing attention in recent years. Prior to work out feasible noise control strategies, it is necessary to find out the primary noises. In this paper, main frequencies of potential noise sources was analyzed and calculated. Sound pressure...

Smart grid is the development trend of power system in China. Intelligent dispatch and control system, as an important part of smart grid, is the new development direction of future automation system. It is of significant necessity to study on future dispatch and control mode. This paper reviews the...

A series of nonlinear finite element analysis for unstiffened and stiffened plates with initial defect is carried out by ANSYS software. The ultimate strength of steel panels and stiffened plates with longitudinal through-thickness cracks under longitudinal compression is studied in this paper. The influence...

To get the optimal productivity, the speed change law is studied for the 400 horsepower wheeled tractor equipped with hydro-mechanical continuosly variable transmission (HMCVT). The tractive power are proposed as the evaluation indexes of the producitvity of the tractor. Based on the load resistance...

In this paper, a propeller model which is common used in small multirotor aerial vehicles is created in CATIA software. To analysis the aerodynamic performance of the propeller in wind field, numerical simulation method in fluent software is used. Through the building of computational domain, meshing...

Automobile assembly workshop has complex process; it usually requires the use of special spreader. Due to highly intensive work, the security requirements of the job are always in high demand, so safety and reliability of the spreader is essential. In this paper, finite element analysis and NDT were...

In order to improve the safety of the hook, the hook was finite element analyzed. Firstly, the geometric model and finite element model were created. Then the material parameters and boundary conditions were applied to the finite element model, the load was studied specially. Finally, the static strength...

During the 6-DOF (6 degrees of freedom) industrial robot processing continuous short segments, frequent start-stop motions would cause vibration of joint and low playback efficiency. For the purpose of improving machining precision and playback efficiency, a cubic S-curve ACC/DEC (acceleration and deceleration)...

The center cable drill rod for coal mine can transmit electric power signals from hole top to bottom while establishing a two-way high-speed information channel between devices at hole top and bottom. This paper introduces the design of outer pipe and inner structure of the cable drill rod and researches...

Molecular dynamics simulations have been performed for the study of different cationic collectors adsorption on the mica (001) surface in the vacuum. The relationship between structure of ammonium ions and the flotation performance of mica has been discussed. The S order parameter is further calculated...

For the precise manipulation in lab-on-a-chip, the slug flow of two-phase or multi-phase forming in the micro-channel has been highly concerned to develop the new digital jetting technology. This paper focused on the water-oil two-phase slug flow to realize the digital jetting by micro water droplets....

In microfluidic chips, the micro droplet jetting is a key technology to control the droplet volume by micro-channel. The micro droplet in micro-channel is highly concerned on the two-phase or multi-phase slug flow, in which the two-phase streams can form two kinds of micro droplets steadily. This paper...

Collaborative control of the autonomous platoon poses significant theoretical and technical challenges. The processes of the platoon collaborative control need to deal with the discrete strategies switching and handle the continuous dynamic behavior of the vehicles. While, the platoon control system...

With the Arduino microcontroller the battlefield EOD robot is composed of double body connecting with double joints, and all of the wheels composed of double track and vice round to carry and to facilitate its adapt to a variety of complex topography on the battlefield. Double joints can be very good...

Under the Solidworks design environment, the modeling of folding chair based on the omnidirectional mobile rescue platform has been finished. This integral structure design can achieve two functions of transshipment goods and manned patrol, and the electromagnetic clutch is used to control the chair...

Based on vehicle collision test, a finite element dummy model (FEM dummy) was built, at the same time the parameter optimization method was proposed in the paper. To improve consistency between the dummy simulation results and results of vehicle collision test, it's necessary to scientifically adjust...

Based on full-size vehicle collision test, a new finite element dummy model (FEM dummy) was built in this paper, at the same time the corresponding dummy's material parameter curve optimization method was proposed. For the result of dummy simulation being in keep with that of full scale vehicle collision...

Cutting-direction fracture is one of the most common and undesirable phenomenon occurring in machining operations that reduces assembly and machined part quality, and it should be avoided or at least reduced.. A finite element model has been established to investigate the mechanism of cutting direction...

According to the connotation of urbanization, this paper constructs comprehensive evaluation index system of regional urbanization level from four aspects that population urbanization, economic urbanization, spatial urbanization and social urbanization, and uses the method of entropy to make comprehensive...

Paralytic shellfish poisoning (PSP) toxins are potent neurotoxins mainly produced by marine dinoflagellates. However, the increasing number of findings of toxin-producing bacteria in dinoflagellate intracellular cells supports the hypothesis of the bacterial origin of PSP toxins. Although toxigenic bacteria...

Wind give the ship with sails auxiliary thrust, and the distribution route of wind energy resource has a significant impact on energy saving of ship with dual-sail. Rayleigh wind speed distribution model of Nanjing, Shanghai and Nantong city on the Wuhu to Shanghai route segments of Yangtze route is...

The pearl river delta is not only located at the north of the south China sea, but also at the forefront of reform and opening up and economic development, while it is the most intense interaction in the land-sea relationship and outstanding contradiction in the human-earth relationship. On the basis...

The Minjiang river basin resources are very rich, but the water and other natural disasters happen often; Infrastructure construction is weak, and the ability to resist disasters is low, economic development relative lag; Ecological environment destruction by artificial and natural factors, in order...

Urban metabolism and urban morphology have become a bilateral entry point to solve the disorders of urban ecosystem. By analyzing the concepts of urban metabolism and urban morphology, a symbiotic relationship is defined within the urban ecosystem: urban metabolism is the inner core of the urban ecosystem,...

In this paper, the fuel consumption, vehicle emission and acceleration performance of two LNG bus were tested and compared by the heavy-duty chassis dynamometer and CVS emission test system. The reducing emission technology of two LNG bus respectively are the lean-burn with oxidation catalytic aftertreatment...

How to speed up the construction of modern agriculture in China, to further enhance the income of farmers, to improve the ecological environment in rural areas, they have become the fundamental problems in the process of building a new countryside. Today, the low-carbon economy provides a new path for...

At present, the market is filled with the excessive packing of the goods, which not only misleads consumers and damage the interests of the consumers. More importantly, this phenomenon results in the waste of resources and energy and the pollution of environment, which disobeys the development of circular...

6 kinds of chlorinated organic pollutants, such as chlorobenzene, 1, 2- dichlorobenzene, 1, 4 - dichlorobenzene, 1,2,4-trichlorobenzene, 2, 4 - dichlorophenol and pentachlorophenol, were analyzed in 5 main water source for 50 food processing companies in Nanning. The health risk assessment of the chlorinated...

Medical waste disposal is an important problem. This paper firstly analyses the classification and present situation of medical waste disposal, then analyzes problems in the process management, and combine with related data to illustrate the necessity of medical waste disposal. Finally, the balance benefit...

The contents and distributions of some heavy metals i.e., Cd, Cu, Pb and Zn in different tissues of horseshoe crabs including Carcinoscorpins rotundicauda and Tachypleus tridentatus from the Beihai coast of Beibu Gulf were investigated. The results indicated that the variation tendency of measured metals...

Jianghan Basin is a typical Mesozoic-Cenozoic salt lake basin of East China, oil and gas reservoir with industrial utilization value was found in the Xingouzui Fm , Xingou Oilfield of this basin, the formation of which is closely related to the dolomite stratigraphy deposited in the salt lake. In order...

In order to integrate increasing carbon sequestration of plants into vegetation restoration and reconstruction project in Guizhou karst area, the carbon storage, spatial distribution characteristics and carbon sequestration benefits of five kinds of disposition modes were studied in Karst Peak-Cluster...

In China, the power sector is the largest source of emissions, account for about 50% of CO2 emission nationwide, meanwhile the power sector plays a pivotal and irreplaceable role in promoting low-carbon development. In all seven polite markets, power generation companies are the companies under control....

Three types of local plants (canna, calamus, umbrella,)were chosen to construct ecological floating-beds for contamination control atshiyanbaierhe. Differences in plant growth and the capacity of sewage treatment were compared. Results showed that three plants can uptake the nitrogen, phosphorus and...

Information on soil organic carbon (SOC) content and stocks is not available in coastal shelter forests, East China, although a large area of forests has been established there in the past 30 years. Dawn Redwood (Metasequoia glyptostroboides) is one of the most commonly tree species for shelter plantation...

Based on both at home and abroad energy sustainable development ,enterprise energy evaluation index system research and low carbon economic background, this thesis proposed the strategy thought of full process of energy-saving and emission-reduction, selected DEA evaluation method to achieve efficiency...

At present, research on energy-saving and emissions reduction is still mainly theoretical construction and not much quantitative research on evaluation, particularly study of the empirical analysis on the provinces and the national is rarely. In order to arrange energy-saving and emissions- reduction...

Since the transmission efficiency and the transmission power of the existing resonant wireless power transmission (WPT) system with a single transmitter were lower, a compact resonant WPT system with dual transmitters was studied. There was a close coupling relationship between the dual transmitters...

Central orogenic belt means sandwiched between Tarim block, North China block and Yangtze block, it was EW distributed by Kunlun-Qilian-Qinling-Dabie-Sulu mountain chain and sandwiched between Lot composition, stretching more than 4,000 kilometers of Phanerozoic orogenic complex system. Qaidam Basin...

The nano silica was used as the dispersed phase particle and the polyethylene glycol was used as the dispersed phase medium. The shear thickeing fluid(Thickening Fluid Shear, STF) which the SiO2 solid content of STF was 9%, 12%, 15%, 17% and 20%. The different concentration different molecular weight...

Based on the geographical data construction requirements of digital city management, current situation of fundamental geographical data and city management resources, and demands for such kind of data from land and planning department in Zhengzhou, we presented an integrative process for constructing...

Estimation of solar radiation (SR) is important for energy plan, architectural design and solar energy systems. In China, it is necessary to explore estimating methods of SR because of the limited radiation measurement data. Based on meteorological data at 46 stations, temporal and spatial variations...

The properties of the reservoir sandstone mainly depend on the sedimentary environment and the diagenesis. The thoroughly research on the diagenesis of the sandstone reservoir in the sixth oil layer of the Upper Triassic Yanchang formation has been one of the core geological problems. The comprehensive...

Nowadays, traditional heating systems represented by kang still impact people’s daily life profoundly in rural areas of northern China. While residents in the case of different activities in rooms respectively heated by different heating methods, the heat transfer quantity and exergy efficiency of...

Vegetation is the main indicator for the state and performance of the ecological environment change. In this study, we analyzed the spatio-temporal of vegetation variation in the Jinghe River Basin. MODIS NDVI (MOD13A2) data were adopted to monitor the dynamic changes. ArcGIS and ENVI software were used...

Different sampling methods were used to collect samples from ventilator pipes after they were sterilized for selecting an optimal sampling method for the disinfection of ventilator pipes. 200 sets of the ventilator pipes used in clinic were randomly divided into group A and B. The pipes in group A were...

The model of urban spacial structure is a significant regulatory mechanism to control the urban space resource distribution by planners. It is the result of conflict selection by government,citizens and other economic institutions. As the reflection of public benefit, planners should utilize the social...

The thecate dinoflagellate bloom microalga, Scrippsiella trochoidea, was co-cultured with different grams of fresh macroalga Gracilaria lemaneiformis under laboratory conditions, to characterize the allelopathic inhibition effect of the seaweed on photophysiological activities of the microalga. Cell...

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...

To gain a better understanding the difference on microbial community structure for low permeability reservoirs in Daqing Oil Field at different days in outdoor, we constructed the 16SrDNA gene clone library for different days’ samples respectively. The results showed that the dominant microbes of zero...

High temperature and hot sun environments are prevalent in many situations. The extreme environments have put forward a severe challenge to the health and safety of the outdoor workers. However, people in duty booth still stick to their post to guarantee social normal production and living activities....

It has been a long history of navigation in Henan Yellow River which has made a great contribution to the economy, society and culture in Henan, even to the whole Chinese nation. Currently, the waterway in Henan province is under the development far behind the increasing demand for transportation. Therefore,...

In 1938, the Huayuankou Dike Breach played a certain role in blocking the Japanese army westward, but the huge flooding area of the Yellow River was formed and the ecological environment extremely worsened, especially the sand and salt deposited and many other disasters occurred frequently, which not...

To guarantee the river water quality reaching the surface water quality standards，this paper used a small-scale experimental equipment and optimized hydraulic retention time（HRT）and optimum temperature range of the artificial wetland sewage treatment plant effluent, and the effect of advanced treatment...

Now, marine exhaust pollutant has occupied an important proportion in the atmospheric pollution. In the inland and offshore port, nitrogen oxides, sulfur oxides and particulate matter pollutants have become the main source of city air pollution. From the aspects of laws and regulations, standards and...

High cost of microalgae harvesting impeded the development of algae biofuel technology and wastewater treatment to commercial practicality. Filamentous fungi and microalgae could form pellets under certain culture condition and the symbiosis system is a novel method to reduce the cost of microalgae harvesting....

As an important part of energy industry, power grid plays a pivotal and irreplaceable role in promoting low-carbon development. In this paper, under the perspective of supply chain carbon management, the pathways of power grid corporation’s carbon emissions reduction were discussed, including decreasing...