SGS Taiwan Ltd.

Taipei, Taiwan

SGS Taiwan Ltd.

Taipei, Taiwan
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Sung W.-P.,National Chin - Yi University of Technology | Shih M.-H.,National Chi Nan University | Tsai F.-J.,SGS Taiwan Ltd.
Applied Mechanics and Materials | Year: 2011

Recently, some serious earthquakes happened in the world and seriously threaten the safety of the life and property of the people. Monitoring and measuring the quakeproof capacity of building need to install high cost sensitive instruments to provide sufficient information. A cost-effective and reliable method based on the applying digital image correlation method, DIC to monitor the natural frequency of building under excitation of earthquake as damage index is proposed in this research. Using DIC to monitor the structural damage based on the natural frequency as damage index can easily detect the structural damage after the excitation of earthquake. Test results reveal that sensitivity of this DIC method is superior to traditional data collected by installed accelerometers, ACC in structure. © (2011) Trans Tech Publications.

Shih M.-H.,National Chi Nan University | Sung W.-P.,National Chin - Yi University of Technology | Tsai F.-J.,SGS Taiwan Ltd.
Applied Mechanics and Materials | Year: 2011

Strong typhoon and earthquake seriously threaten the safety of the life and property of the people. A cost-effective and reliable method is proposed to monitor the natural frequency response of building under excitation of external forces based on the applying digital image correlation method, DIC. The analysis accuracy of this dynamic DIC method is tested and verified by comparing with numerical analysis program, accelerometers, ACC and fast Fourier Transform, FFT. The test results reveal that the analysis accuracy of this DIC method near to the ACC and FFT traditional experimental methods. They demonstrate that using this DIC method to detect dynamic response of building under the excitation of external force has high practicability. © (2011) Trans Tech Publications.

Juang J.-G.,National Taiwan Ocean University | Cheng I.-H.,SGS Taiwan Ltd
Advances in Mechanical Engineering | Year: 2017

In this study, three webcams are applied to a five-joint robotic arm system. One camera is applied to recognize commands from control panel, which consist of words and numbers. The letters of command can be obtained after image is transformed from red, green, and blue to hue, saturation, and lightness color space and using the optical character recognition and pattern matching process. The message will then be sent to robot system. Another two cameras are used for catching the left and right images of an object. Calibration procedure of the robot and cameras is performed first. The values from image plane can be compared and transformed to three-dimensional coordinates by the Q matrix. The coordinates are then translated to 4096 precision values in robotic arm system. Movements of the robotic arm are based on fuzzy logic theory that can drive the robotic arm to the relative point and position of a given object. Feedback values of arm movement are applied to correct the position error in real time. The robot system can catch the three-dimensional coordinates of the object and perform smartphone automatic testing operations by the commands from visual recognition system. © The Author(s) 2017.

Kao S.-H.,Chung Shan Medical University | Chen H.-M.,Fu Jen Catholic University | Lee M.-J.,Tian Sheng Memorial Hospital | Kuo C.-Y.,SGS Taiwan Ltd. | And 2 more authors.
Evidence-based Complementary and Alternative Medicine | Year: 2011

Ocimum gratissimum (OG) is widely used as a traditional herb for its antibacterial activity in Taiwan. Recently, antitumor effect of OG on breast cancer cell is also reported; however, the effects of OG on human pulmonary adenocarcinoma cell A549 remain unclear. Therefore, we aimed to investigate whether aqueous OG extract (OGE) affects viability of A549 cells and the signals induced by OGE in A549 cells. Cell viability assays revealed that OGE significantly and dose-dependently decreased the viability of A549 cell but not that of BEAS-2B cell. Morphological examination and DAPI staining indicated that OGE induced cell shrinkage and DNA condensation for A549 cells. Further investigation showed that OGE enhanced activation of caspase-3, caspase-9 and caspase-8 and increased protein level of Apaf-1 and Bak, but diminished the level of Bcl-2. Additionally, OGE inhibited the phosphorylation of extracellular signal-regulated kinase (ERK) yet enhanced the phosphorylation of c-Jun N-terminal kinase (JNK) and p38 MAP kinase (p38). In conclusion, our findings indicate that OGE suppressed the cell viability of A549 cells, which may result from the activation of apoptotic signaling and the inhibition of anti-apoptotic signaling, suggesting that OGE might be beneficial to lung carcinoma treatment. © Copyright 2011 Han-Min Chen et al.

Wilkinson J.D.,Medtronic | Clark B.M.,Honeywell | Wong R.,Cisco Systems | Slayman C.,Ops A La Carte | And 10 more authors.
IEEE International Reliability Physics Symposium Proceedings | Year: 2011

Alpha counting measurement methods have been widely used in the semiconductor industry for many years to assess the suitability of materials for semiconductor production and packaging applications. Although a number of published articles describe aspects of this counting, a multicenter, comparative trial has not been carried out to assess the methodological accuracy of current methods. This paper reports on experience with a 9 center, international, round-robin style trial using a shared set of samples to quantify variability in alpha emission measurements. Four samples representing low and ultralow alpha materials were counted by each participating lab in a blinded trial. The consensus mean emissivity for low alpha material was estimated as 30.9 khr-1-cm-2 with a range from 20.2 to 45.5, less than half of which can be attributed to counting uncertainty or other known sources of error. A strong correlation for replicate measurements within a lab was also observed supporting the conclusion that there are systematic variations in equipment or calibration among labs. Eleven of 23 measurements of ultralow alpha materials were within 1 standard deviation of the consensus mean and 7 were at or below background. The high level of counting uncertainty for these measurements is thought to be sufficient to mask any systematic variation similar to the low alpha observations. Comparison of the reported values with a standard calculation demonstrates that there are also differences in the interpretation of the values reported for emissivity and error, underscoring the need for careful interpretation of results. © 2011 IEEE.

Chen R.-C.,SGS Taiwan Ltd. | Wei K.-J.,SGS Taiwan Ltd. | Wang T.-M.,National Sun Yat - sen University | Yu Y.-M.,SGS Taiwan Ltd. | And 5 more authors.
Journal of Food and Drug Analysis | Year: 2013

A confirmatory and quantitative method based on liquid chromatography- tandem mass spectrometry (LC/MS/MS) has been developed for the determination of low-level residues of three antibiotic dyes and two metabolites in fish muscle and feed. The target compounds include methylene blue (MB), crystal violet (CV), leucocrystal violet (LCV), malachite green (MG), and leucomalachite green (LMG). The procedures involve solvent extraction by 50% McIlvaine's buffer with acetonitrile, followed by solid phase extraction (SPE) with an MCX cartridge. High performance liquid chromatography (HPLC) and positive electrospray ionization (ESI) MS with multiple reaction monitoring of two transition reactions was applied for each compound. The detected ion ratios of MB, CV, LCV, MG, and LMG were 11.8, 34.9, 88.4, 25.6, and 42.0, respectively. The average fortification recoveries of the MB, CV, LCV, MG, and LMG of the level of 0.8 mg/kg tested in fish muscle and feed samples were 99.68, 98.93, 100.49, 100.01, and 100.00%, respectively. The precision of analysis of analytes in fish muscle and feed ranged from 4% to 14% and from 7% to 14%, respectively. The decision limits (CCa) were 0.28-0.54 mg/kg, and the detection capabilities (CCb) were 0.35-0.67 mg/kg (n = 99). © 2013, Food and Drug Administration, Taiwan. Published by Elsevier Taiwan LLC. All rights reserved.

Cheng Y.W.,St. John's University Taiwan | Cheng J.H.,Sun Chi Yuan Environmental Protection Technology Co. | Wu C.L.,SGS Taiwan Ltd. | Lin C.H.,Chung Hua Institution for Economic Research
Resources, Conservation and Recycling | Year: 2012

In order to realize a circulative society, enhancement on resource productivity has been sought in many ways to upgrade the recycling industry, such as implementing governmental regulations, building up control and management schemes, and improving treatment technologies. While some positive progresses have been achieved, the information on operational conditions of recycling business is seldom addressed. This study tries to examine the operational characteristics of recycling and treatment industry for end-of-life vehicles (ELVs) in Taiwan and its relationship to recycling performance. Geographical relationship between dismantlers and shredding plants are discussed to demonstrate the influence of market size on a self-sustained recycling system. Information on 22 out of the 245 registered dismantlers and five shredding plants were retrieved from official database and on-site visits were conducted to confirm the data regarding basic setup, facility capacity, and operational conditions of the selected business. Indicators representing production capacity and power efficiency were postulated for performance analysis. Monthly production capacities of the dismantlers surveyed in this study ranged 0.17-73.14 units/worker and that of the shredding plants was 67.87 units/worker in average. Power efficiencies of the shredding plants were found in the range of 42.82-56.61 kg of ELV processed/kWh, or 17.66-23.36 kWh/ton. For shredding plants, power efficiency decreased with increase of power consumption and lower recycling rate likely happened at lower production rates. This study introduces a preliminary approach to examine the operational characteristics of ELV recycling business which can be useful in planning of ELV recycling strategy. It is suggested that existing shredding plants and dismantlers need to enhance their competitiveness by improving the operational performance. Energy management in the ELV shredding plants deserves more attentions for future improvement. © 2012 Elsevier B.V. All rights reserved.

Chen Y.-Z.,SGS Taiwan Ltd. | Kao S.-Y.,SGS Taiwan Ltd. | Jian H.-C.,SGS Taiwan Ltd. | Yu Y.-M.,SGS Taiwan Ltd. | And 3 more authors.
Journal of Food and Drug Analysis | Year: 2015

In this study, a method for determination of cholesterol and four phytosterols by gas chromatography coupled with electron impact ionization mode-tandem mass spectrometry without derivatization in general food was developed. The sample was saponified with 7.5% KOH in methanol. After heating on hot plate and reflux for 60 minutes, the saponified portion was extracted with n-hexane/petroleum ether (50:50, v/v). The extracts were evaporated with rotary evaporator and then redissolved with tetrahydrofuran. The tetrahydrofuran layer was transferred into an injection vial and analyzed by gas chromatography on a 30m VF-5 column. Limit of quantification was 2mg/kg. Recoveries of cholesterol and four phytosterols from general food were between 91% and 100%. © 2015.

Kung T.-A.,National Sun Yat - sen University | Tsai C.-W.,SGS Taiwan Ltd. | Ku B.C.,National Sun Yat - sen University | Wang W.-H.,National Sun Yat - sen University
Food Chemistry | Year: 2015

A rapid and efficient multiresidue method that involves using improved QuEChERS method and liquid chromatography-electrospray tandem mass spectrometry (LC-ESI-MS/MS) was developed to measure trace levels of sulfonamides in fish tissue. This proposed method was proven to be a powerful, highly sensitive, and environmentally friendly analytical tool that requires minimal sample preparation. The typical MS/MS fragmentation patterns of the [M+H]+ were 156 m/z, 108 m/z, and 92 m/z. Separation was performed on HC-C18 columns with a gradient elution by using methanol -5 mM ammonium acetate containing formic acid (pH 3.5). This method was validated and exhibited favorable performance as well as acceptable accuracy (80.2-93.5%), precision (3.82-8.71%), sensitivity (limits of detection (LODs) 0.43-1.22 μg kg-1, limits of quantification (LOQs) 1.27-3.71 μg kg-1; decision limit (CCα) 1.49-10.9 μg kg-1, detection capability (CCβ) 1.71-11.4 μg kg-1), and an acceptable matrix effect (-18.2-18.4%). This methodology has been successfully applied in analyzing various fish tissue from local markets. © 2014 Published by Elsevier Ltd.

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