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Chinese Journal of Chemical Engineering 2018年第9期26卷 1992-2002页

作者： Asad Rahman Jitkai Chin Feroz Kabir Yew mun Hung Department of Chemical and Environmental Engineering University of Nottingham Malaysia Campus Jalan Broga43500 SemenyihSelangorMalaysia Department of Engineering and Mathematics Sheffield Hallam UniversitySheffield S1 1WBUnited Kingdom Department of Mechanical Engineering Monash University Sunway Campus Jalan Lagoon Selatan47500 5ubang JayoSelangorMalaysia

Although ammonium dinitramide(ADN)has been targeted as a potential green monopropellant in future space vehicles,its application potential in Micro-electrical–Mechanical System(MEMS)thrusters or microthrusters has been seldom reported in open *** this paper,electrolytic decomposition of Ammonium Dinitramide(ADN)-based liquid monopropellant FLP-103 was carried out in an open chamber and MEMS thrusters were fabricated from poly-dimethylsiloxane(PDMS)to characterize the power *** thrust measurement methods were employed to investigate the electrolytic decomposition of FLP-103 in MEMS *** results show that the monopropellant can be successfully ignited at room temperature through 80 V,0.1 A(8 W)using copper wire as *** the current thruster design,low thrust was obtained at FLP-103 flowrate of 40μl·min^(-1)but it generated the highest specific impulse,Isp,among all the flowrates *** experiments successfully demonstrated the potential application of electrolytic decomposition of FLP-103 in MEMS thrusters.

关键词： Ammonium Dinitramide (ADN) FLP-103 Electrolytic decomposition MEMS thruster

Assessment of Pb uptake,translocation and immobilization in kenaf (Hibiscus cannabinus L.) for phytoremediation of sand tailings

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Journal of Environmental Sciences 2008年第11期20卷 1341-1347页

作者： HO Wai mun ANG Lai Hoe LEE Don Koo Forest Research Institute Malaysia 52109 KepongSelangorMalaysia Department of Forest Sciences Seoul National UniversitySeoul 151-921Korea

The potential of kenaf (Hibiscus cannabinus L.) for phytoremediation of lead (Pb) on sand tailings was investigated.A pot experiment employing factorial design with two main effects of fertilizer and lead was conducted in a nursery using sand tailings from an ex-tin mine as the growing *** showed that Pb was found in the root,stem,and seed capsule of kenaf but not in the *** of organic fertilizer promoted greater biomass yield as well as higher accumulation capacity of *** Pb-spike...

关键词： kenaf lead fertilizer bioaccumulation capacity phytoremediation

Elucidating the photoluminescence-enhancement mechanism in a push-pull conjugated polymer induced by hot-electron injection from gold nanoparticles

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Photonics Research 2021年第2期9卷 131-141页

作者： DONGKI LEE SE GYO HAN JUNGHO mun KIHYUK YANG SUNG HYUK KIM JUNSUK RHO KILWON CHO DONGYEOP X.OH mun seok JEONG Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Chemical Engineering Pohang University of Science and TechnologyPohang 37673Republic of Korea Department of Mechanical Engineering Pohang University of Science and TechnologyPohang 37673Republic of Korea Research Center for Bio-based Chemistry Korea Research Institute of Chemical Technology(KRICT)Ulsan 44429Republic of Korea

Understanding the photophysical interactions between the components in organic-inorganic nanocomposites is a key factor for their efficient application in optoelectronic devices. In particular, the photophysical study of nanocomposites based on organic conjugated polymers is rare. We investigated the effect of surface plasmon resonance(SPR) of gold nanoparticles(Au NPs) on the photoluminescence(PL) property of a push-pull conjugated polymer(PBDB-T). We prepared the hybrid system by incorporating poly(3-hexylthiophene)-stabilized Au NPs(P3 HT-Au NPs) into PBDB-T. The enhanced and blueshifted PL was observed in the hybrid system compared to PL in a neat PBDB-T system, indicating that the P3 HT chains attached to the Au NPs suppressed charge-transfer from PBDB-T to the Au NPs and relayed the hot electrons to PBDB-T(the band-filling effect).This photophysical phenomenon limited the auto-dissociation of PBDB-T excitons. Thus, the radiative recombination of the excitons occurred more in our hybrid system than in the neat system.

关键词： conjugated system polymer

Atraumatic splenic rupture after cocaine use and acute Epstein-Barr virus infection: A case report and review of literature

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World Journal of Gastrointestinal Surgery 2019年第12期11卷 433-442页

作者： Allan mun Fai Kwok Department of Surgery Wollongong Hospital

BACKGROUND Atraumatic splenic rupture(ASR)accounts for just over 3%of all cases of splenic rupture and is associated with a high mortality *** most common culprit is acute infection with Epstein-Barr virus(EBV)but other documented aetiologies include neoplasia,other viral/bacterial infections,acute and chronic pancreatitis,amyloidosis and anticoagulant *** are four previous reports of cocaine-associated ASR but never before has it been documented in combination with concurrent acute EBV *** SUMMARY A 21-year-old man presented to hospital with acute left shoulder pain which radiated to the right shoulder and upper *** denied any history of recent trauma and had no relevant past medical *** took no regular prescription medications but had used cocaine within the previous 24 *** revealed splenomegaly,a Grade 3 subcapsular splenic haematoma,moderate haemoperitoneum and an incidental 9 mm splenic artery *** was also serological evidence of acute EBV *** endovascular embolisation of the pseudoaneurysm was performed and the splenic rupture was managed *** patient remained admitted in hospital for seven days and did not require any transfusion of blood *** imaging showed complete resolution of the haemoperitoneum after 5 *** importance of abstinence from illicit drug use was emphasised to the patient but it is unknown whether or not he remains *** This case demonstrates that ASR is a rare condition that can result from acute EBV infection and cocaine ingestion and requires a high index of suspicion to diagnose clinically.

关键词： Atraumatic Spontaneous Splenic rupture Cocaine Epstein-Barr virus Splenic artery pseudoaneurysm Case report

Integrated management of facility,process,and output:data model perspective

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Science China(Information Sciences) 2012年第5期55卷 994-1007页

作者： LEE Seunghoon HAN Soonhung mun Duhwan Department of Mechanical Engineering Korea Advanced Institute of Science and Technology373-1 Gusong-dongYuseong-guDaejeon 305-701South Korea Division of Ocean Systems Engineering Korea Advanced Institute of Science and TechnologyDaejeon 305-701South Korea Department of Precision Mechanical Engineering Kyungpook National University386 Gajang-dongSangjuGyeongsangbuk-do 742-711South Korea

As the manufacturing industry matures,vast amounts of data related to products are created by many kinds of engineering systems during the manufacturing *** include data for a variety of facilities,manufacturing processes,and the input and output of each process (input material,by-products,and intermediate and final products).Effective operation and maintenance of manufacturing facilities and eco-friendly products are gradually becoming important issues due to increased environmental regulations and changes in the enterprise business *** this reason,increased efficiency in data management is necessary in the manufacturing *** this paper,existing data models for the integration of lifecycle data are analyzed according to their application *** the analysis,information requirements for the integrated management of facility,process,and output data are *** to these requirements,a data model appropriate for this integration is *** an application case study,the use of the proposed data model for the effective operation and maintenance of manufacturing facilities is ***,benefit,limitation,and improvement of the proposed data model are discussed.

关键词： integrated product data management ISO 10303 STEP PDM schema ISO 10303 STEP PLCS ISO 15926 process plants product lifecycle management manufacturing facility management

Enhanced photocatalytic activity of fish scale loaded TiO_2 composites under solar light irradiation

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Journal of Environmental Sciences 2012年第6期24卷 1142-1148页

作者： Li-Ngee Ho Soon-An Ong Hakimah Osman Fong-mun Chong School of Materials Engineering University Malaysia Perlis02600 ArauPerlisMalaysia School of Environmental Engineering University Malaysia Perlis02600 ArauPerlisMalaysia

Fish scale （FS） loaded TiO2 composites were investigated as photocatalysts in degradation of Methyl Orange under solar light irradiation. Composites were prepared through sol-gel method by varying mass ratio of TiO2/FS at 90：10, 70：30 and 50：50, respectively. The catalysts prepared in this study were characterized by using XRD, SEM, FT-IR and nitrogen sorption. The effects of solar irradiation, mass ratio of TiO//FS composites, irradiation time and catalyst loadings were studied. Synergistic effect was found in TiO2/FS of 90：10 composite which performed higher photocatalytic degradation than synthesized TiO2 under solar light irradiation. However, further increasing fish scale content in the composites reduced the photocatalytic activity drastically. Under solar light irradiation, all the catalysts in this study exhibited photocatalytic activity, except TiO2/FS of 50：50 composite that only acted as a weak biosorbent without performing any photocatalytic property. Photocatalytic degradation increased with increasing catalyst loading and irradiation time but decreased with increased of initial dye concentration.

关键词： photocatalytic degradation dye fish scale TiO2

Recent advances and current challenges in endoscopic resection with the full-thickness resection device

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World Journal of Gastroenterology 2023年第25期29卷 4009-4020页

作者： Elijah J mun Mihir S Wagh Division of Gastroenterology University of Colorado School of MedicineAuroraCO 80045United States Interventional Endoscopy Division of GastroenterologyUniversity of Colorado School of MedicineAuroraCO 80045United States

Endoscopic full-thickness resection(EFTR)has emerged as a viable technique in the management of mucosal and subepithelial lesions of the gastrointestinal tract(GIT)not amenable to conventional therapeutic *** various devices and techniques have been described for EFTR,a single,combined fullthickness resection and closure device(full-thickness resection device,FTRD system,Ovesco Endoscopy AG,Tuebingen,Germany)has become commercially available in recent ***,the FTRD system was limited to use in the colorectum ***,a modified version of the FTRD has been released for EFTR in the upper GIT as *** review provides a broad summary of the FTRD,highlighting recent advances and current challenges.

关键词： Endoscopic full-thickness resection Full-thickness resection device Colorectal neoplasm Subepithelial lesions Scarred non-lifting polyps

Ascending retrocecal appendicitis presenting with right upper abdominal pain:Utility of computed tomography

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World Journal of Gastroenterology 2009年第28期15卷 3576-3579页

作者： Eugene mun Wai Ong Sudhakar Kundapur Venkatesh Department of Diagnostic Radiology National University Hospital Yong Loo Lin School of Medicine National University of Singapore Singapore 119074 Singapore

Acute appendicitis is a common surgical condition that is usually managed with early surgery, and is associated with low morbidity and mortality. However, some patients may have atypical symptoms and physical findings that may lead to a delay in diagnosis and increased complications. Atypical presentation may be related to the position of the appendix. Ascending retrocecal appendicitis presenting with right upper abdominal pain may be clinically indistinguishable from acute pathology in the gallbladder, liver, biliaw tree, right kidney and right urinary tract. We report a series of four patients with retrocecal appendicitis who presented with acute right upper abdominal pain. The clinical diagnoses at presentation were acute cholecystitis in two patients, pyelonephritis in one, and ureteric colic in one. Ultrasound examination of the abdomen at presentation showed subhepatic collections in two patients and normal findings in the other two. Computed tomography （CT） identified correctly retrocecal appendicitis and inflammation in the retroperitoneum in all cases. In addition, abscesses in the retrocecal space （n = 2） and subhepatic collections （n = 2） were also demonstrated. Emergency appendectomy was performed in two patients, interval appendectomy in one, and hemicolectomy in another. Surgical findings confirmed the presence of appendicitis and its retroperitoneal extensions. Our case series illustrates the usefulness of CT in diagnosing ascending retrocecal appendicitis and its extension, and excluding other in- fiammatory conditions that mimic appendicitis.

关键词： Retrocecal appendicitis Upper abdominalpain Computed tomography

Patternable production of SrTiO_(3) nanoparticles using 1-W laser directly on flexible humidity sensor platform based on ITO/SrTiO_(3)/CNT

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Journal of Materials Science & Technology 2021年第12期71卷 186-194页

作者： Le Thai Duy Ji-Ye Baek Ye-Ji mun Hyungtak Seo Department of Materials Science&Engineering Ajou UniversitySuwon16499South Korea Department of Energy Systems Research Ajou UniversitySuwon16499South Korea

Perovskite oxides like S rTiO_(3) at the nanoscale are of interest for eme rging applications,including high-k dielectrics and ***,their synthesis requires long calcination at the elevated temperature,which is a barrier of their application to flexible ***,an effective laser-assisted sol-gel method to patternably produce S rTiO_(3) na noparticles(-100 nm)in selective areas on polyimide substrates(coated with ITO)is ***,the violet-laser power is just 1 W but sufficient to crystallize the material in a short period(a few seconds).Furthermore,developing a flexible device platform using carbon nanotubes(CNT)and SrTiO_(3) nanoparticles for detection of humidity changes at room temperature is *** sensor platform has both capacitive and resistive sensing *** resistive mode with a lower power usage(about 0.2μW)is suitable for long monitoring of humidity in the range of2%RH and *** capacitive mode with higher sensitivity,faster response/recovery time(1-3 min),and lower detection limit(0.5%RH)can be used for calibration *** performance of the flexible sensor is still maintained after 5000 bending cycles at 1.5-cm ***,our synthesis method and the flexible sensor show chances for mass-producing perovskite oxides at low cost for wearable electronics.

关键词： SrTiO_(3) Nanoparticles Laser annealing Patternable Flexible sensor CNT

Surface Measurement Using Compressed Wavefront Sensing

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Photonic Sensors 2019年第2期9卷 115-125页

作者： Eddy mun Tik CHOW Ningqun GUO Edwin CHONG Xin WANG School of Engineering Monash University Malaysia Jalan Lagoon SeiatanBandar Sunway 47500Malaysia Department of Electrical and Computer Engineering Colorado State UniversityFort Collins CO 80623USA

Compressed sensing leverages the sparsity of signals to reduce the amount of measurements required for its reconstruction. The Shack-Hartmann wavefront sensor meanwhile is a flexible sensor where its sensitivity and dynamic range can be adjusted based on applications. An investigation is done by using compressed sensing in surface measurements with the Shack-Hartmann wavefront sensor. The results show that compressed sensing paired with the Shack-Hartmann wavefront sensor can reliably measure surfaces accurately. The performance of compressed sensing is compared with those of the iterative modal-based wavefront reconstruction and Fourier demodulation of Shack-Hartmann spot images. Compressed sensing performs comparably to the modal based iterative wavefront reconstruction in both simulation and experiment while performing better than the Fourier demodulation in simulation.

关键词： Shack-Hartmann wavefront sensor surface measurement compressed sensing