Search all articles

The method of carbothermal reaction is used to prepare titanium boride (TiB2) in a DC electric arc furnance by using a powder mixture of TiO2, H2BO3 and C. The initial product is milled and the impurities are removed by pickling and reverse flotation. The final TiB2 powder with a purity of over 99% can...

For a large set of data points, registration is time-expensive. In order to deal with this problem, we propose an improved Nearest Neighbor Searches(NNS) algorithm for 3D point clouds registration based on Graphic Processing Unit(GPU). In order to maximize the storage of data points in the memory, we...

Technological developments cause manga not only in print but also in digital form (デジタル漫画) and in the form of videos which are often called mangadouga (漫画動画). The development of manga can indirectly trigger manga to be more widely known and attract interest in learning Japanese. Manga as a cultural reflection...

Effect of alloying techniques of dollop-like yttrium, as-cast and extruded Mg-Y master alloy in AZ91D magnesium alloy on microstructure and the efficiency of alloying was studied by optical microscopy, scanning electron microscopy, XRD and inductively-coupled plasma (ICP) spectroscopy. The as-cast AZ91D-1.2wt.%Y...

We present a new method to recognize human activity under uncertain view. The activity width image which is extracted from the sequence of silhouette is used to represent the activity features. It converts the spatial and temporal pattern to a grey-level image. View difference causes the deformation...

Determination of traces of metals in gases is achieved by using a combination of a Pyrex Gas Washing System and ICP-MS methods. A special purge and blank installation is designed to clean the system with purified Helium (6N). Three 125-ml bubbler tubes in series with a 20 ml of nitric acid (~20%) are...

This study explores the relationship between working capital management (WCM) efficiency and corporate financial performance using panel data from 1,200 non-financial listed firms across 10 emerging economies (Brazil, Russia, India, China, South Africa, Indonesia, Mexico, Turkey, Thailand, and Malaysia)...

Fluorescent poly(St-co-Eu(MAA)3Phen) microspheres have been facilely fabricated via copolymerization of styrene and Eu(MAA)3Phen with using the mixture of water and methanol as the dispersing medium in presence of sodium p-styrenesulfonate (NaSS). Strong photoluminescent europium coordination compound...

In this paper, the polytetrafluoroethylene tank high pressure digestion method was used for the determination of trace elements of Allium fistulosum L.by ICP-MS. Welsh onion cultivars ‘Zhangqiu’ were selected as the experimental materials. The influence of different nitrogen lever on the content of trace...

Inductively coupled plasma optical emission spectrometric approach(ICP-OES) is used to determine the chromium content in pyrotechnics used for fireworks and firecrackers. Element of chromium is commonly found as impurity in chemical materials used for pyrotechnics in fireworks and firecrackers. Statistical...

Inductively coupled plasma optical emission spectrometric approach(ICP-OES) is used to determine the mercury content in pyrotechnics used for fireworks and firecrackers. Element of mercury is commonly found as impurity in chemical materials used for pyrotechnics in fireworks and firecrackers. Statistical...

Phytoremediation of Pb-contaminated soil was studied with -cyclodextrin as enhancing agent using Brassica Juncea. Effects of the addition dosage and the addition time of -cyclodextrin, and Pb concentration in soil on the plant growth were investigated. Plants were cultivated in an environmental control...

Point cloud registration often use ICP algorithm to match ,which is the classic algorithm of point cloud registration, due to the presence of some defects in ICP algorithm, scholars later have done a lot of improvements. In this paper, we firstly view the traditional ICP algorithms, then we propose the...

The sodium metavanadate samples are digested in hydrochloric acid, and the content of matrix element sodium is directly measured by inductively coupled plasma atomic emission spectrometry (ICP-OES). The optimum dilution ratio is disposable obtained by optimizing the weight of the sample and the volume...

ITO nanopowder of the high purity was prepared by self-desigred fabricated arc plasma apparatus. The crystal structure, morphology, particle size distribution and purity were characterized by X-ray diffraction(XRD) , transmission electron microscopy(TEM) and Inductively Coupled Plasma Action Emission...

Silver doped TiO2 catalyst TiO2-Ag was synthesized by microwave hydrothermal method when the optimal condition was selected with orthogonal and single factor tests. The photocatalytic activity of TiO2-Ag catalyst was further enhanced by the microwave and ultrasonic assisted with using methyl orange as...

Refined pitches were obtained by distillation and solvent extraction with raw materials of the high temperature coal tar and medium-temperature pitch, respectively. Modified pitches were achieved by air oxidation treatment of refined pitches. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES)...

Rare earth element (REE) compositions in ceramics from the Tongguanyao site (TGY) of China were determined by the inductively coupled plasma-mass spectrometry (ICP-MS) to compare their sources. Total REE concentrations of 14 samples range from 120.9 to 453 g•g-1, with an average value of 228.5 g•g-1....

The standard ICP algorithm is a mainstream of 3D point cloud registration technique, which can establish effectively correct corresponding point set. An improved ICP algorithm based on inflection point is proposed. Our algorithm doesn’t require the measured object having obvious features. As feature...

The article defined the values of statokinetic steadiness indices among disabled children from 5 to 14 years old with motor disorders (ICP (infantile cerebral paralysis)) during vertical position taking. With the help of computer posturography at “Stabilan-1” apparatus the following tests were held:...

This paper provided a method for determination of Copper, Iron, Manganese, Nickel, Cobalt and Arsenic in bioleaching solution by ICP-AES. Working conditions of the instrument and selection of analytical spectral lines were tested and optimized. The detection limit was 0.002, 0.003, 0.001, 0.003, 0.007,...

In the process of CO2 aerated, the variation of pH value, the characteristics of Carbonate precipitation and hydroxide precipitate by Zn, the adsorption and co-precipitation characteristics with the hydrated oxides of iron and aluminum and calcite have been researched. After CO2 was aerated to the high...

The acquirement of 3D geometric information is the most important for reverse engineering. A new approach for three-dimensional (3D) shape measurement based on digtal fringe and neural networks is proposed. The precision of camera calibration determines the measurement accuracy of the system. By applying...

The change of pH value in the wastewater, the characteristics of Carbonate precipitation and hydroxide precipitate by Pb, the adsorption and co-precipitation characteristics with the hydrated oxides of iron and aluminum and calcite have been researched by CO2 bubbling. After CO2 was bubbled to the high...

Tin mining will produce tailings waste which has the potential to be a source of pollution environment, especially in watersheds. This research was conducted in Paya Benua Village, Mendo Barat District, Bangka Regency, Bangka Belitung Islands Province. This study aims to determine the level of spread...

In this paper, we propose a facial feature localization algorithm based on a binary neural network technique - k-Nearest Neighbour Advanced Uncertain Reasoning Architecture (kNN AURA) to encode, train and match the feature patterns to accurate identify the nose tip in 3D. Based on the results of the...

In Indonesia, small-scale rock mining is generally managed by traditional miners. For example, the andesite rock mining in Bulu Alakkuang has been exploited for approximately one hundred years. Mining waste is channeled directly into the Panreng River, located on the north side of the mining area. Rock...

Mapping and Exploration are the fundamental tasks in many mobile robotic applications such as warehouse management, search and rescue operations in disaster scenarios, service robotics, patrolling and autonomous driving. Single robots are employed in the above-said tasks to model the environment accurately...

The sodium metavanadate samples are digested completely by hydrochloric acid and nitric acid (VHCl: VHNO3=5:1), and then made a directly determination of micro element potassium of 0.010 to 1.0% by inductively coupled plasma atomic emission spectrometry (ICP-OES). In the coexistence medium of 42% vanadium...

Accurate indoor navigation, especially precise attitude estimation is a challenge topic. Unlike the rate gyroscope in an IMU, the camera based visual-gyro does not suffer from drift errors. In order to overcome the drawbacks of the standalone systems, an INS/visual-gyro integration using direction cosine...

The contents of Ni, Co, Mn and Li in LiCoxNiyMnzO2 cathode material were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) method. The samples were dissolved in aqua regia. The analytical spectral line for Ni, Co, Mn and Li was 232.0, 237.8, 279.4 and 610.3nm, respectively....

Dilute Magnetic Semiconductors (DMS) are gaining interest at a very fast pace due to the possibility of their integration with the current semiconductor technology. This research includes preparation and characterization of Mn doped ZnO thin films. Films are prepared through Sol - Gel spinning method....

Fly ash sample collected from a facility which treat urban waste with combustion, the major physio-chemical features of which were studied including chemical composition; the heavy-metal content, speciation as well as leaching toxicity; surface morphology analysis and composition within the mineralogical...

A method was proposed for the determination of copper, iron, nickel, cobalt, gold and silver in industrial wastewater by ICP-AES. Working conditions of the instrument and selection of analytical spectral lines were tested and optimized. The detection limit was 0.002,0.003,0.002,0.008,0.008,0.002mg/L....

Cadmium (Cd) is one of the metal elements that is often found contained in cacao plantation system. The first gate of Cd contamination is soil as medium of plant growth. The soil characteristics such as texture and pH play vital role in chemical and physical reaction in the soil that may increase mobility...

Gadolinium is a rare earth metal that has similar properties as other rare earth metals, making it difficult to separate Gadolinium from the others. Gadolinium has been extracted from Erath’s crust in the form of their minerals, such as monazite and gadolinite. Gadolinium is widely used for applications...

During the vehicle identification in transportation, many problems must be overcome: firstly, modern vehicle outline leads the failure of getting features from 3D rigid body. Secondly, synthesis distortion is hard to overcome in contour connecting because of front wheels torsion. So a new algorithm of...

Mao Zedong’s “Speech at the Yan’an Forum on Literature and Art” in 1942 and Xi Jinping’s “Speech at the Forum on Literature and Art” (hereinafter referred to as the two “Speeches”) in 2014 are two glorious Marxist literature and art theoretical guidance documents. Under the illumination of the spirit...

Having adequate science process skills is a must for pre-service science teachers as a provision in carrying out their duties as a science teacher. This study aims to provide a profile of the science process skills of pre-service science teachers in the Sciences Education Study Program, Faculty of Mathematics...

Inductively coupled plasma optical emission spectrometric approach(ICP-OES) is used to determine the lead content in pyrotechnics used for fireworks and firecrackers. Element of lead is commonly found as impurity in chemical materials used for pyrotechnics in fireworks and firecrackers. Statistical analysis...

In order to get the optimized process parameters for etching ZnS by inductively coupled plasma (ICP), a mixed gas of CH4, H2 and Ar is used for the etching. This paper studies the influence of ICP etching rate and surface roughness after etching of ZnS by changing the process parameters of CH4/H2/Ar...

Inductively coupled plasma optical emission spectrometric approach(ICP-OES) is used to determine the arsenic content in pyrotechnics used for fireworks and firecrackers. Element of arsenic is commonly found as impurity in chemical materials used for pyrotechnics in fireworks and firecrackers. Statistical...

The optimum conditions for the preparation of TiO2-Ag-Sm photocatalysts by microwave hydrothermal method are as follows: n(Ag+): n(Ti4+)=0.3%, microwave power 600 W, reaction temperature 150 ?"?, reaction time 3 h, calcination temperature 650 ?"? and calcination time 3h. The structure of the catalyst...

Aim to demand for automobile covering parts of measurement, this paper puts forward a new kind of optical inspection method, which combines photography with dense point scanning measurement. In order to meet the requirement of measuring the covering parts of automobiles, this paper proposes a new kind...

11 atmospheric particulate matter sampling sites was created around Miyun reservoir to analyze the mineral composition, element concentration and sources of atmospheric particulate matter pollution by using ICP-MS and XRD analysis. The results show that there are many iron minerals and some unweathered...

To improve registration performance of machine vision under complex environment, an improved RANSAC rapid point cloud registration algorithm is presented upon the principle of cross ratio invariability for internal feature points of a registered target. By analyzing the model of a registered target,...

A new conductive polymer nanofiber was prepared by electrospinning of the polymer solution and in situ synthesis. The electrospun polystyrene (PS) fibers were employed as template for the in situ surface polymerization of poly 3, 4-ethylenedioxythiophene (PEDOT). Electrospun nanofibers were utilized as...

Purpose: To study the concentrations of trace metals and nonmetals elements in different types of gallstones (cholesterol-, pigment-, mixed- and calcium carbonate type) and to explore the formation mechanisms of gallstones. Method: Inductively coupled plasma emission spectrometer (ICP-AES) was used to...

A novel method for the determination of palladium in tetrakis (triphenylphosphine) palladium catalyst samples was established by inductively coupled plasma atomic emission spectrometry after samples digested by teflon pressure digestion vessel with aqua regia. Such experiment conditions were investigated...

Rapid urban expansion, poor waste management practices, and a reliance on coal-based energy sources have contributed significantly to soil pollution in Mongolia’s urban ger districts. This study investigates the environmental risks posed by ash disposal from household coal burning in the Nalaikh district...