20 results for "Tee Lin"
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Inflammatory Arthritis Associated with COVID-19 Vaccination
COVID-19 vaccines have been shown to be highly efficacious in preventing symptomatic COVID-19 infections throughout the pandemic. There have been emerging cases of inflammatory arthritis occurring in close relation to COVID-19 vaccination. We illustrate a case of new-onset inflammatory arthritis 10…
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Humidity Control for Front Opening Unified Pod after Opening Its Door in a Mini-Environment
Wafers are usually placed in a front opening unified pod (FOUP) while waiting in the line of manufacturing processes; a conventional way for preventing (or removing) contamination is to purge an FOUP with a gas, so as to maintain the cleanliness level. This study investigates the effect of the flow…
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Energy savings approaches for high-tech manufacturing factories
This study integrates a fab energy simulation (FES) tool and energy conversion factors to analyze energy consumption and identify energy savings opportunities of high-tech manufacturing factories. The data used is the 169,124 MW h annual energy consumption of a Taiwanese semiconductor manufacturing…
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An experimental study on the filtration performance of a poly-alpha-olefin-compatible expanded polytetrafluoroethylene high-efficiency particulate air filter
Filter media made of expanded polytetrafluoroethylene filters are known to be incompatible with poly-alpha-olefin or any oil-based challenge particles, and thus, filters made of expanded polytetrafluoroethylene had limited use in pharmaceutical applications. The benefits of expanded…
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Research on pollution prevention and control in semiconductor process tool and mini-environment
Taiwan currently holds the leading position globally in the semiconductor manufacturing industry, with wafer fabrication outsourcing playing a significant role. The cleanliness of cleanrooms is paramount to maintain and strengthen this position. During the wafer manufacturing process, Airborne…
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Energy saving for an air conditioning system applied in a thin-film-transistor liquid-crystal display (TFT LCD) high-tech fabrication plant (Fab)
Data collected from this research is used to calculate energy consumption of the thin-film-transistor liquid-crystal display (TFT LCD) air-conditioning system. These results are then used to determine how much energy can be saved and proposes to reduce the energy consumption of the chiller…
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An innovative double-jet design as an air flow barrier to isolate temperature and humidity in a low-temperature storage room
This study used an innovative double-jet design to isolate the temperature and humidity of a lower temperature storage room (-15 °C) from an adjoining higher temperature room (5 °C). This device can reduce the chance of forming a hazardous area in the working environment. Several axial fans are…
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Flow characteristics and velocity fields of a front opening unified pod at open door condition
Particle contamination decreases product quality in semiconductor industries. Nowadays, the size of the chips and features has significantly reduced; thus increasing the importance of moisture removal from front opening unified pods during manufacturing and transportation of semiconductor wafers…
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A comparative study of a front opening unified pod (FOUP) moisture removal efficiency with different purging gases
Airborne molecular contamination (AMC) is one of the main causes of chip products defects during manufacturing. The downward moist air flow originated from the fan filter unit (FFU) inside the mini-environment (ME) can penetrate into the front opening unified pod (FOUP) and cause wafer defects…
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The effects of surface modification on aerodynamic characteristics of airfoil DU 06 W 200 at low Reynolds numbers,
In this paper the flow characteristics and velocity fields over the vertical axis wind turbines DU 06 W 200 airfoil developed by Delft University of Technology and some other innovative designs are examined by computational fluid dynamics (CFD) simulation and particle image velocimetry (PIV)…
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Large scale PIV-measurement to evaluate the flow isolation device (FID) efficiency in the stocker room of wafer masks✰
Silicon chip demand increased in recent years while the linewidth of the integrated circuits (ICs) has decreased. Improvement of the wafer process yield has become a key factor in chip manufacturing. The yield of the wafer process is closely related to the quality of the mask in the lithography…
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Design of an innovative flow isolation device (FID) as an air flow barrier to control the temperature of large storage areas in cold room applications
The virus transmission chain of Covid-19 has a resulted in a significant, global impact on social and working life. Covid-19 vaccines require protective refrigerated conditions during delivery and storage. Warehousing and transportation of these vaccines need to be properly controlled to maintain…
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Comparing the effectiveness of negative-pressure barrier devices in providing air clearance to prevent aerosol transmission
Purpose: To investigate the effectiveness of aerosol clearance using an aerosol box, aerosol bag, wall suction, and a high-efficiency particulate air (HEPA) filter evacuator to prevent aerosol transmission. Methods: The flow field was visualized using three protective device settings (an aerosol…
Also available at: DOAJ
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Flow analysis of a front opening unified pod (FOUP) subjected to different fan filter unit (FFU) coverage area in mini-environment
Moisture contamination control has been adopted in many wafer handling and storage processes. In portable wafer carriers called front opening unified pods (FOUPs), the current industry-accepted methods of moisture control are gas purging and laminar air curtain (LAC). Both typically use purified…
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A comparative analysis of aerosol exposure and prevention strategies in bystander, pre-hospital, and inpatient cardiopulmonary resuscitation using simulation manikins
Abstract To evaluate aerosol exposure risk and prevention strategies during bystander, pre-hospital, and inpatient cardiopulmonary resuscitation (CPR). This study compared hands-only CPR, CPR with a surgical or N95 mask, and CPR with a non-rebreather mask at 15 L/min. 30:2 compression–ventilation…
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Effect of Hepatocellular Carcinoma Surveillance Programmes on Overall Survival in a Mixed Cirrhotic UK Population: A Prospective, Longitudinal Cohort Study
Introduction: Surveillance for hepatocellular carcinoma (HCC) is recommended by national and international guidelines. However, there are no trial data on whether surveillance improves clinical outcomes in a UK cirrhosis population of mixed aetiology. Our aim was to determine the impact of, and…
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Effect of COVID-19 on presentations of decompensated liver disease in Scotland
BACKGROUND AND AIMS: SARS-CoV-2 and consequent pandemic has presented unique challenges. Beyond the direct COVID-related mortality in those with liver disease, we sought to determine the effect of lockdown on people with liver disease in Scotland. The effect of lockdown on those with…
Also available at: DOAJ