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Enhancing MXene-based supercapacitors:Role of synthesis and 3D architectures

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Journal of Energy Chemistry 2024年第4期91卷 1-26页

作者： Wen Siong poh Wen Jie Yiang Wee-Jun Ong Pau Loke Show Chuan Yi Foo School of Energy and Chemical Engineering Xiamen University MalaysiaSelangor Darul EhsanMalaysia&College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina Kelip-kelip!Center of Excellence for Light Enabling Technologies Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia Center of Excellence for NaNo Energy&Catalysis Technology(CONNECT) Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia Department of Chemical Engineering Khalifa UniversityShakhbout Bin Sultan St-Zone 1Abu DhabiUnited Arab Emirates Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou UniversityWenzhou 325035ZhejiangChina Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihSelangor Darul EhsanMalaysia Department of Sustainable Engineering Saveetha School of EngineeringSIMATSChennai 602105India

MXene has been the limelight for studies on electrode active materials,aiming at developing supercapacitors with boosted energy density to meet the emerging influx of wearable and portable electronic *** its various desirable properties including intrinsic flexibility,high specific surface area,excellent metallic conductivity and unique abundance of surface functionalities,its full potential for electrochemical performance is hindered by the notorious restacking phenomenon of MXene *** to its two-dimensional(2D)nature and surface functional groups,inevitable Van der Waals interactions drive the agglomeration of nanosheets,ultimately reducing the exposure of electrochemically active sites to the electrolyte,as well as severely lengthening electrolyte ion transport *** a result,energy and power density deteriorate,limiting the application versatility of MXene-based *** 3D architectures using 2D nanosheets presents as a straightforward yet ingenious approach to mitigate the fatal flaws of ***,the sheer number of distinct methodologies reported,thus far,calls for a systematic review that unravels the rationale behind such 3D MXene structural ***,this review aims to serve this purpose while also scrutinizing the structure–property relationship to correlate such structural modifications to their ensuing electrochemical performance ***,the physicochemical properties of MXene play fundamental roles in determining the effective charge storage capabilities of 3D MXene-based *** largely depends on different MXene synthesis techniques and synthesis condition variations,hence,elucidated in this review as ***,the challenges and perspectives for achieving viable commercialization of MXene-based supercapacitor electrodes are highlighted.

关键词： MXene 3D architectures Synthesis design Supercapacitor Energy storage

Identification of thermal front dynamics in the northern Malacca Strait using ROMS 3D-model

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Journal of Oceanology and Limnology 2024年第1期42卷 41-57页

作者： Ku Nor Afiza Asnida Ku MANSOR Nur Hidayah ROSELI poh Heng KOK Fariz Syafiq Mohamad ALI Mohd Fadzil Mohd AKHIR Institute of Oceanography and Environment Universiti Malaysia TerengganuKuala Nerus 21030Malaysia Faculty of Science and Marine Environment Universiti Malaysia TerengganuKuala Nerus 21030Malaysia

The thermal front in the oceanic system is believed to have a significant effect on biological *** an era of climate change,changes in heat regulation between the atmosphere and oceanic interior can alter the characteristics of this important *** the simulation results of the 3D Regional Ocean Modelling System(ROMS),we identified the location of thermal fronts and determined their dynamic variability in the area between the southern Andaman Sea and northern Malacca *** Single Image Edge Detection(SIED)algorithm was used to detect the thermal front from model-derived *** show that a thermal front occurred every year from 2002 to 2012 with the temperature gradient at the location of the front was 0.3°C/*** to the years affected by El Ni?o and negative Indian Ocean Dipole(IOD),the normal years(e.g.,May 2003)show the presence of the thermal front at every selected depth(10,25,50,and 75 m),whereas El Ni?o and negative IOD during 2010 show the presence of the thermal front only at depth of 75 m due to greater warming,leading to the thermocline deepening and enhanced *** May 2003,the thermal front was separated by cooler SST in the southern Andaman Sea and warmer SST in the northern Malacca *** higher SST in the northern Malacca Strait was believed due to the besieged Malacca Strait,which trapped the heat and make it difficult to release while higher chlorophyll a in Malacca Strait is due to the freshwater conduit from nearby rivers(Klang,Langat,Perak,and Selangor).Furthermore,compared to the southern Andaman Sea,the chlorophyll a in the northern Malacca Strait is easier to reach the surface area due to the shallower thermocline,which allows nutrients in the area to reach the surface faster.

关键词： regional ocean modelling system thermal front Andaman Sea Malacca Strait single image edge detection algorithm

Ultrasound-assisted isolation:A new method to isolate stromal vascular fraction

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Chinese Journal of Plastic and Reconstructive Surgery 2024年第1期6卷 8-15页

作者： Yiming Gao Xiaojie Zhang poh-Ching Tan Yun Xie Peiqi Zhang Tianyu Zhang Qingfeng Li Shuangbai Zhou Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China Department of Burns and Plastic Surgery Shanghai Changzheng HospitalShanghai200003China College of Life Sciences Shanghai Normal UniversityShanghai200233China

Background:The stromal vascular fraction(SVF),a cluster of stem and progenitor cells isolated from adipose tissue,holds significant promise for application in regenerative ***,the existing methods for SVF isolation are time-consuming and ***,in this study,we explored a new method of SVF extrac-tion-ultrasound-assisted SVF isolation(USASI)-and compared the viability and characteristics of SVF isolated using different ***:SVF extraction methods using different combinations of ultrasound power,ultrasound time,collagenase dosage,and collagenase digestion time were compared with those of the control group(collagenase digestion method).The cell yield and vitality of the SVF were evaluated via cell counting and trypan blue *** cell components and immunophenotypes of freshly isolated SVF were analyzed using flow *** prolifer-ative capacity and differentiation potential of the SVF were also ***:Ultrasonication at 95 W-20 kHz for 30 s followed by digestion with 0.15%collagenase for 30 min was identified as the most suitable parameter for the USASI method in isolating SVF,as recommended based on the evaluation of various tested *** USASI method significantly reduced the collagenase dosage and shortened the digestion *** to the collagenase digestion method,the USASI method had a higher cell yield and cell viability,with no adverse effects on cell components,proliferative capacity,or multipotential differentiation ***:With reduced processing time,lower collagenase dosage,and increased cell yield without impairing the viability and characteristics of SVF,USASI holds the potential to emerge as a time-saving and cost-effective method for future clinical applications.

关键词： Stromal vascular fractions SVF isolation Mechanical force Ultrasound

COVID-19 vaccine safety surveillance and emerging concerns of vaccine-induced immune thrombotic thrombocytopenia

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Journal of Geriatric Cardiology 2021年第11期18卷 952-956页

作者： Shyh poh Teo Department of Internal Medicine Raja Isteri Pengiran Anak Saleha(RIPAS)HospitalBrunei Darussalam

The COVID-19 pandemic has caused signi-ficant disruption in the lives of people,af-fecting clinical *** older people,there is a high risk of physical and psychological complications such as delirium,pressure injuries and risk of death.[1]In response to the pandemic,vaccines have been developed over compressed timelines including new platforms,such as mRNA vaccines,with international mass vaccination pro-grams currently underway to achieve herd im-munity and curb this pandemic.

关键词： injuries vaccine clinical

A review of modified and hybrid anaerobic baffled reactors for industrial wastewater treatment

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Water Science and Engineering 2022年第3期15卷 247-256页

作者： poh Lin Lau Antoine P.Trzcinski Department of Civil Engineering School of Engineering and TechnologyUniversity of Technology SarawakSibuSarawak 96000Malaysia School of Agriculture and Environmental Science University of Southern QueenslandWest StreetQueensland 4350Australia

This review discusses high-strength wastewater treatment using anaerobic baffled reactors(ABRs)and modified *** research findings and applications of ABRs in treating various types of high strength wastewater generated from food companies,livestock,and industries were summarized and *** parameters affecting the performance of ABRs are briefly *** state-of-the-art laboratory studies are compiled and critically *** challenges and suggestions for future investigation are also addressed.

关键词： Anaerobic baffled reactor Industrial food wastewater Livestock wastewater High-strength wastewater Anaerobic digestion

Non-small-bowel lesions encountered during double-balloon enteroscopy performed for obscure gastrointestinal bleeding

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World Journal of Gastroenterology 2010年第15期16卷 1885-1889页

作者： Hoi-poh Tee Arthur J Kaffes A W Morrow Gastroenterology and Liver Centre Royal Prince Alfred Hospital

AIM:To report the incidence of non-small-bowel bleeding pathologies encountered during double-balloon enteroscopy (DBE) procedures and to analyse their ***: A retrospective study of a prospective DBE database conducted in a tertiary-referral center was conducted. A total of 179 patients with obscure gastrointestinal bleeding (OGIB) referred for DBE from June 2004 to November 2008 were analysed looking for the incidence of non-small-bowel lesions (NSBLs; all and newly diagnosed) encountered during ***: There were 228 (150 antegrade and 78 retrograde) DBE procedures performed in 179 patients. The mean number of DBE procedures was 1.27 per patient. The mean age (SD) of the patients was 62 ± 16 years old. There were 94 females (52.5%). The positive yield for a bleeding lesion was 65.9%. Of the 179 patients, 44 (24.6%) had NSBLs (19 of them had dual pathology with small-bowel lesions and NSBLs); 27 (15.1%) had lesions not detected by previous endoscopies. The most common type of missed lesions were vascular ***: A significant proportion of patients (24.6%) had lesions within reach of conventional endoscopy. Careful repeat examination with gastroscopy and colonoscopy might be required.

关键词： Bleeding Obscure gastrointestinal bleeding Endoscopy Double-balloon enteroscopy

An isogeometric numerical study of partially and fully implicit schemes for transient adjoint shape sensitivity analysis

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Frontiers of Mechanical Engineering 2020年第2期15卷 279-293页

作者： Zhen-Pei WANG Zhifeng XIE Leong Hien poh Department of Civil and Environmental Engineering National University of SingaporeSingapore 117576Singapore Institute of High Performance Computing(IHPC) Agency for ScienceTechnology and Research(A*STAR)Singapore 138632Singapore China Academy of Launch Vehicle Technology Beijing Institute of Astronautical Systems EngineeringBeijing 100076China

In structural design optimization involving transient responses,time integration scheme plays a crucial role in sensitivity analysis because it affects the accuracy and stability of transient *** this work,the influence of time integration scheme is studied numerically for the adjoint shape sensitivity analysis of two benchmark transient heat conduction problems within the framework of isogeometric *** is found that(i)the explicit approach(β=0)and semi-implicit approach withβ0.5 are generally preferred for their unconditional stability;and(iii)Crank–Nicolson type approach(β=0.5)may induce a large error for large time-step sizes due to the oscillatory *** numerical results also show that the time-step size does not have to be chosen to satisfy the critical conditions for all of the *** is recommended to useβ≈0.75 for unconditional stability,such that the oscillation condition is much less critical than the Crank–Nicolson scheme,and the accuracy is higher than a fully implicit approach.

关键词： isogeometric shape optimization designdependent boundary condition transient heat conduction implicit time integration adjoint method

Atrial fibrillation in older patients reducing stroke risk is not only about anticoagulation

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Journal of Geriatric Cardiology 2016年第10期13卷 880-882页

作者： Nay Thu Win Shyh poh Teo Medical Officer Department of Internal Medicine RIPAS Hospital Brunei Darussalam Consultant Geriatrician and Physician Department of Internal Medicine RIPAS Hospital Brunei Darussalam

Atrial fibrillation （AF） is associated with a five-fold increased risk of ischaemic stroke, stroke recurrence and mortality. Anticoagulant therapy may reduce the risk of recurrent stroke by approximately 60% and is ... 详细信息

关键词： Atrial fibrillation Bleeding Hypertension Stroke Warfarin

Physical activity in older people with cardiac co-morbidities

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Journal of Geriatric Cardiology 2018年第8期15卷 557-558页

作者： Jun-Ming Liew Shyh poh Teo The Chinese University of Hong Kong Shatin New Territories Hong Kong China Geriatrics and Palliative Unit Department of Internal Medicine RIPAS Hospital Bandar Seri Begawan Brunei Darussalam

The World Health Organisation （WHO） launched a global action plan on physical activity to provide a frame- work of policy actions to increase physical activity in June 2018. Physical activity is an effective intervention for pre- vention and management of non-communicable diseases including cardiac disease, regardless of age. We hoped this letter would remind readers of the importance of physical activity in older people, particularly those with cardiac co-morbidities.

关键词： Cardiac eomorbidities Older people Physical activity