Achievements and Solutions in Mechanical Engineering
Innovation for Sustainable Development
Civil, Architectural, Structural and Constructional Engineering II
Recent Advances in Materials, Mechanical and Civil Engineering
International Conference on Material Science and Engineering II
The 2nd International Conference Material Engineering and Application
Marine Systems and Technologies
Advanced Materials, Structures and Mechanical Engineering IV
Applied Engineering, Materials and Mechanics
Energy Efficiency in Strategy of Sustainable Production III
Measurement Technology and Intelligent Instruments XII
Physical Modeling for Virtual Manufacturing Systems and Processes
Innovation for Sustainable Development
摘要: The WGM biosensor using a nonlinear silica micro ring resonator coating by nano gold layer is designed and examined. The simulation results of Gaussian laser pulses propagating in the symmetry waveguide shows good behavior of the existence of whispering gallery mode outside the surface of the ring resonators coating by a very thin nano gold layer to trap biomolecules with the plasmonic interaction. The output shifted signals from the designed sensor have an accuracy to characterize types of the specific biomolecules as well.
摘要: The aim of this work is about establishing and analyzing the Hamiltonian for entangled photon generation in a micro PANDA ring resonator for a quantum key generation unit in quantum cryptography processing. The reduced density matrix for two level states of qubits is also analyzed by using dynamics Heisenberg equation of motion. The master equation in the thermal effect shows fluctuation of the corresponding c-operators in phase space. The optimum simulation result for probability of qubit states survive for the existence of a surrounding heat bath is also showed and discussed.
摘要: The powerful novel invention of entangled photon source by using a nonlinear silica micro ring resonator for quantum cryptography use was established and investigated. This entangled photon pair was generated under the degenerated four wave mixing process under the phase mismatch adjusment. The corresponding entangled photon generation Hamiltonian was established and studied in term of EPR pair. The obtained entangled photon pairs can be applied to the quantum cryptography distribution under quantum teleportation process showing the feasible and suitable for quantum information communication via the high visibility and $Q$ factor results. The advantage of this novel entangled photon source will be proved to become a part of quantum distribution device in the near future.
摘要: This paper presents a study of efficiency improvement in the oil pipeline system. Instead of using only control valve, the original system of two oil pumps which have rating of 1,850 kW each is redesigned by using variable speed drive (VSD) technology together with the control valve. This proposed installation method of VSD will be performed to adjust and open the control valve fully at 100%. Furthermore, the frequency control method of the VSD also depends on types of oil. In the efficiency analysis of the oil pipeline system, four types of oil that is JET A1, Disel, B91, and B95 having different density coefficient will be used respectively. The new and the original data acquisition of relationships between transported oil quantity of each type per period and consumed power are compared. From the sequent results, it can be confirmed that this proposed method used to the practical analysis in accordance with Affinity Law can be applied to not only improve the efficiency and also save cost of the power consumption up to 42.96%.
摘要: Generally, electric and magnetic interference will affect in high resistance measurements. This causes a large number of the standard deviation of measurement as well as the accuracy and result of measurement. The purpose of this research is to study the effectiveness of shielding and guarding on the measurement system. In experimental setup, the 1 GΩ resistance was supplied by voltage source of 100 V, 500 V and 1000 V in with and without shielding and guarding. The resistance value and standard deviation were measured and compared in each case of measurements. From the experimental results, when applying shielding and guarding, the noise can be reduced. As a result, the standard deviation was decreased more than 10 times.
摘要: The aim of this work was to develop technical analysis of wavelength dispersion X-ray fluorescence (WDXRF) and compare with technical neutron activation analysis (NAA). First, the standard of tin oxide (SnO) was ground into powder and mixed with boric acid (H3BO3) as binder at different weight. All of samples were investigated by WDXRF in normalize mode.The results indicated that the range can use to calibration at sample weight 0.2, 0.3 and 0.4 g. Next, the three SnO samples from different area (A, B and C) were ground, mixed with binder at ratio 0.2, 0.3 and 0.4 g and investigated by WDXRF in normalize mode. The results show tin (Sn) content of sample area A, B and C were 75.71, 74.61 and 71.01%, respectively. The result from NAA technique show Sn content of sample A, B and C were 79.36, 77.48 and 73.35%. The percentage error of WDXRF and NAA technique of the samples from the different area had 4.63, 3.70 and 3.19%. From the experiment as examined that the WDXRF technique could be improve process for determine chemical composition which one of choice for easy to used and low cost.
摘要: To date one of the most significant innovative trends in chemical analysis is to develop analytical instruments that have processed to analyze on-site. Such an apparatus should minimize problems related to sample transports, sample handlings and sample storages. Currently, a traditional wet analysis in laboratories has been replaced with a portable device designed to minimize problems from sending samples to the lab. One of the practical chemical methods which can be developed as the mobile device is flow injection analysis (FIA) because the scaled-down FIA manifolds have been already presented. Regarding the detection, the rapid progress in material science and electronic technology consents the construction of portable detection devices, particularly light-emitting-diodes (LEDs) based-spectrometers. In this work, the FIA analyzer integrated with a built-in detector was designed for on-site chemical testing. A double syringes pump was assembled for transporting of the reagent carrier which were merged at the first mixing coil. A plug of a sample solution was inserted automatically by using a six-port-valve and was mixed with the carrier stream at the second mixing coil before directed to the detector. The heart of the developed analyzer is the built-in spectrophotometric sensor, made of the LEDs as a light source and a photodiode as a detector. The continuous stream of the final product was pushed into a quartz flow-through cuvette and then was exposed to the LED light. Finally, the absorbance of the product solution was calculated according to the Beer-Lambert law.
摘要: The initial conditions and the effective models are important for weather prediction. The efficiency of the forecast depends on the initial conditions. There are many processes that are used to generate the initial conditions, in this research will be generate the initial conditions by the regular perturbation method because it can be used to the big data for weather prediction. The weathers prediction by the single level primitive equation model (SILEPE). The data used in this study from Intergovernmental Panel on Climate Change (IPCC). The forecast error between observed data and forecast data used to the Mean Absolute Deviation (MAD). The results to show that the regular perturbation method can be used to generate the initial conditions for the northeast monsoon prediction on 4 days forecast.
摘要: Thailand is an agricultural country. So that, the water resources are important. The water management is very important for keep the water used in necessary time. The monsoon is causes a heavy rain. So that, the monsoon prediction by the global climate model is important. The accuracy of the forecasts by the predictability measurement method is very important. In this research, the northeast monsoon prediction in Thailand by the global climate model. The data from The Bjerknes Centre for Climate Research (BCCR), University of Bergen, Norway. The global climate model is Bergen Climate Model (BCM) Version 2.0 (BCCR-BCM2.0) of the Intergovernmental Panel on Climate Change (IPCC) and the European Centre for Medium Range Weather Forecast (ECMWF) are used. The largest Lyapunov exponent (LLE) is the predictability measurement method for verify the efficiency of the global climate model and improvement the LLE by limit theorems. The result to show that the improvement the LLE by limit theorems can be measure the accuracy of the northeast monsoon prediction in Thailand by the global climate model are suitable.
摘要: Microscope add-on toolkits for smartphone and tablet have become more widely available in the market. Although, these are sufficient to meet the demand and requirements of standard users, e.g. educational usage, these devices, in fact, do not meet the medical and biological requirements where fluorescence imaging plays a crucial role. In this paper, we introduce our innovative design in compact fluorescence microscope for smartphone and tablet. The device enables users to take fluorescent images at several excitation wavelengths using compact sources and filters.