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| 1 | PdAg bimetallic electrocatalyst for highly selective reduction of CO2 with low COOH^* formation energy and facile CO desorption显示文摘For electrocatalytic reduction of CO2 to CO,the stabilization of intermediate COOH^* and the desorption of CO^* are two key steps.Pd can easily stabilize COOH^*,whereas the strong CO^* binding to Pd surface results in severe poisoning,thus lowering catalytic activity and stability for CO2 reduction.On Ag surface,CO^* desorbs readily,while COOH^* requires a relatively high formation energy,leading to a high overpotential.In light of the above issues,we successfully designed the PdAg bimetallic catalyst to circumvent the drawbacks of sole Pd and Ag.The PdAg catalyst with Ag-terminated surface not only shows a much lower overpotential(-0.55 V with CO current density of 1 mA/cm^2)than Ag(−0.76 V),but also delivers a CO/H2 ratio 18 times as high as that for Pd at the potential of-0.75 V vs.RHE.The issue of CO poisoning is significantly alleviated on Ag-terminated PdAg surface,with the stability well retained after 4h electrolysis at-0.75 V vs.RHE.Density functional theory(DFT)calculations reveal that the Ag-terminated PdAg surface features a lowered formation energy for COOH^* and weakened adsorption for CO^*,which both contribute to the enhanced performance for CO2 reduction. | Rui Lin Xuelu Ma Weng-Chon Cheong Chao Zhang Wei Zhu Jiajing Pei Kaiyue Zhang Bin Wang Shiyou Liang Yuxi Liu Zhongbin Zhuang Rong Yu Hai Xiao Jun Li Dingsheng Wang Qing Peng Chen Chen Yadong Li | 2019 | Nano Research2019，12，11： | 7 |
| 2 | Epidemic reemergence in adaptive complex networks 显示文摘 | Zhou J Xiao G Cheong S A Fu X Wong L Ma S Cheng T | 2012 | Physical Review E2012，85，03： | 1 |
| 3 | The dose effect of ephedrine on the onset time of vecuronium显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesth Analg2003，97，5： | 1 |
| 4 | Pulse oximeter as a home assessment tool:Knowledge and user experience among the community in Malaysia during the COVID-19 pandemic显示文摘Objective:To determine the degree of knowledge in the usage of pulse oximeter as a home assessment tool among the community in Malaysia.Methods:A cross-sectional survey was conducted in November 2021.The questionnaire assessed the knowledge in using pulse oximeters,user experience and opinions in using pulse oximeter as a home assessment tool during the pandemic.Results:A total of 504 respondents were included in the study,and the mean score in knowledge related to application of pulse oximetry was 73.00%,while the mean score in knowledge related to factors affecting pulse oximetry readings was only 38.51%.A total of 90.5% of the respondents recognised normal pulse rate and 88.5% knew the blood oxygen saturation levels of a healthy adult,while 69.4% recognised the definition of silent hypoxia.In addition,the majority of the respondents agreed that factors such as poor blood circulation(71.2%),excessive movements(69.8%),and hand position(60.7%)affected oximetry readings.However,61.7%,81.7%,77.2% and 76.8% of the respondents could not identify nail polish,skin colour,skin thickness and tattoos as factors that may affect oximetry readings respectively.Conclusions:The respondents showed a satisfactory level of knowledge related to application of pulse oximetry,but a poor level of knowledge related to factors affecting pulse oximetry readings among the community in Malaysia.Continuous efforts in educating the community on the correct use of pulse oximeters are crucial for appropriate home assessment and avoiding unnecessary stress. | Siew-Keah Lee Jin Wei Ma Khai Ying Chan Yi Song Cheong Wan Ting Hong Regine Chew Yi Ong Wei Cheng Tay Ang-Lim Chua | 2022 | Asian Pacific Journal of Tropical Medicine2022，15，5： | 1 |
| 5 | The dose effect of ephedrine on the onset time of vecuronium显示文摘 | Cheong MA Jeon JW | 2003 | Anesth Analg2003，96，4： | 1 |
| 6 | The dose effect of e- phedrine on the onset time of vecuronium 显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesth Analg2003，96，4： | 1 |
| 7 | The dose effect of ephedrine on the onset time of vecuronium 显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesth Analg2003，96，4： | 1 |
| 8 | Ephedrine reduces the pain from propofol injection显示文摘 | Cheong MA Kim KS Choi WJ | 2002 | Anesth Analg2002，95，： | 1 |
| 9 | Ephedrine reduces the pain from propofol injection显示文摘 | Cheong MA Kim KS Choi WJ | 2002 | Anesth Analg2002，95，： | 1 |
| 10 | The dose effect of e- phedrine on the onset time of vecuronium 显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesth Analg2003，96，4： | 1 |
| 11 | From the archives of the AFIP: neoplasms of the urinary bladder: radio- logic - pathologic correlation 显示文摘 | Wong- You -Cheong JJ Woodwan'l PJ Manning MA | 2006 | Radiogmphics2006，26，2： | 1 |
| 12 | Application of legal principles andmedical ethics : multifetal pregnancy and fetal reduction 显示文摘 | Cheong MA Tay SK | 2014 | Singapore M edJ2014，55，6： | 1 |
| 13 | The dose effect of ephedrineon the onset time of vecuronium显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesth Analg2003，96，4： | 1 |
| 14 | Paroxysmal taehyeardia and hypertension with or without ventrieular fibrillation during lap- aroseopie adrenaleetomy : two ease reports in patients with noneate- eholamine - seereting adrenoeortieai adenomas 显示文摘 | Cheong MA Kim YC Park HK | 1999 | J Laparoen- dose Adv Surg Tech A1999，9，3： | 1 |
| 15 | Ephedrine reduces the pain from propofol injection显示文摘 | Cheong MA Kim KS Choi WJ | 2002 | Anesth Analg2002，95，5： | 1 |
| 16 | The dose effect of ephedrineon the onset time of vecuronium 显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesth Analg2003，96，4： | 1 |
| 17 | Tactile assessment for the reversibility of rocuronium-induced neuromuscular blockade during propofol or sevoflurane anesthesia显示文摘 | Kim KS Cheong MA Lee HJ | 2004 | Anesth Analg2004，99，4： | 1 |
| 18 | The dose effect of ephedrine on the onset time of Vecuronium 显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesth Analg2003，96，4： | 1 |
| 19 | The dose effect of ephedrine on the onset of neuromuscular block by vecuronium显示文摘 | Kim KS Cheong MA Jeon JW | 2003 | Anesh Analg2003，97，2： | 1 |
| 20 | Ephedrine reduces the pain from propofol injection显示文摘 | Cheong MA Kim KS Choi WJ | 2002 | Anesth Analg2002，95，5： | 1 |
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