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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

Role of prophylactic antibiotics in cirrhotic patients with variceal bleeding

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World Journal of Gastroenterology 2014年第7期20卷 1790-1796页

作者： Yeong Yeh Lee hoi-poh tee Sanjiv Mahadeva Department of Medicine School of Medical SciencesUniversiti Sains MalaysiaKubang Kerian 16150KelantanMalaysia Department of Internal Medicine Hospital Tengku Ampuan AfzanKuantan 25100PahangMalaysia Department of Medicine Faculty of MedicineUniversity of MalayaKuala Lumpur 50603Malaysia

Bacterial infections are common in cirrhotic patients with acute variceal bleeding,occurring in 20%within48 *** including early rebleeding and failure to control bleeding are strongly associated with bacterial ***,mortality from variceal bleeding is largely determined by the severity of liver *** a higher Child-Pugh score,patients with hepatocellular carcinoma are particularly susceptible to *** several hypotheses that include increased use of instruments,greater risk of aspiration pneumonia and higher bacterial translocation,it remains debatable whether variceal bleeding results in infection or vice versa but studies suggest that antibiotic prophylaxis prior to endoscopy and up to 8 h is useful in reducing bacteremia and spontaneous bacterial *** gram negative bacilli of enteric origin are most commonly isolated from cultures,but more recently,gram positives and quinolone-resistant organisms are increasingly seen,even though their clinical significance is ***(including ciprofloxacin and norfloxacin)used for short term(7 d)have the most robust evidence and are recommended in most expert *** term intravenous cephalosporin(especially ceftriaxone),given in a hospital setting with prevalent quinolone-resistant organisms,has been shown in studies to be beneficial,particularly in high risk patients with advanced cirrhosis.

关键词： Antibiotics Prophylaxis Cirrhosis Variceal bleeding Infection

Placement of removable metal biliary stent in post-orthotopic liver transplantation anastomotic stricture

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World Journal of Gastroenterology 2010年第28期16卷 3597-3600页

作者： hoi-poh tee Martin W James Arthur J Kaffes Gastroenterology Unit Medical Department Hospital Tengku Ampuan AfzanJalan Tanah Putih25100 KuantanPahangMalaysia Wolfson Digestive Disease Biomedical Re search Unit Nottingham NG7 2UHUnited Kingdom AW Morrow Gastroenterology and Live Centre Royal Prince Alfred HospitalMissenden RoadCamp erdownNSW 2050Australia

Postoperative biliary strictures are the most common cause of benign biliary stricture in Western countries, secondary to either operative injury or bile duct anastomotic stricture following orthotopic liver transplantation(OLT).Surgery or endoscopic interventions are the mainstay of treatment for benign biliary *** aim to report the outcome of 2 patients with refractory anastomotic biliary stricture post-OLT,who had successful temporary placement of a prototype removable covered self-expandable metal stent(RCSEMS).These 2 patients(both men,aged 44 and 53 years)were given temporary placement of a prototype RCSEMS (8.5 Fr gauge delivery system,8 mm×40 mm stent dimensions)in the common bile duct across the biliary *** was no morbidity associated with stent placement and removal in these 2 *** parameters improved after the RCSEMS *** biliary patency was achieved in both the patients. No further biliary intervention was required within 14 and 18 mo follow-up after stent removal.

关键词： Anastomosis Biliary stent Biliary stricture Orthotopic liver transplantation Niti-S stent

Prospective randomized controlled trial evaluating cap-assisted colonoscopy vs standard colonoscopy

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World Journal of Gastroenterology 2010年第31期16卷 3905-3910页

作者： hoi-poh tee Crispin Corte Hamdan Al-Ghamdi Emilia Prakoso John Darke Raman Chettiar Wassim Rahman Scott Davison Sean P Griffin Warwick S Selby Arthur J Kaffes Gastroenterology Unit Medical DepartmentHospital Tengku Ampuan AfzanJalan Tanah Putih25100 KuantanPahang Malaysia AW Morrow Gastroenter-ology and Liver Centre Royal Prince Alfred HospitalMissen-den RoadCamperdownNSW 2050Australia Gastroenterology Unit Medical DepartmentQueen Elizabeth HospitalKarung Berkunci No.202988586 Kota KinabaluMalaysia

AIM: To study the significance of cap-fitted colonoscopy in improving cecal intubation time and polyp detection rate. METHODS: This study was a prospective randomized controlled trial conducted from March 2008 to February 2009 in a tertiary referral hospital at Sydney. The primary end point was cecal intubation time and the secondary endpoint was polyp detection rate. Consecutive cases of total colonoscopy over a 1-year period were recruited. Randomization into either standard colonoscopy (SC) or cap-assisted colonoscopy (CAC) was performed after consent was obtained. For cases randomized to CAC, one of the three sizes of cap was used: D-201-15004 (with a diameter of 15.3 mm), D-201-14304 (14.6 mm) and D-201-12704 (13.0 mm). All of these caps were produced by Olympus Medical Systems, Japan. Independent predictors for faster cecal time and better polyp detection rate were also determined from this study. RESULTS: There were 200 cases in each group. There was no signif icant difference in terms of demographic characteristics between the two groups. CAC, when compared to the SC group, had no signif icant difference in terms of cecal intubation rate (96.0% vs 97.0%, P = 0.40) and time (9.94 ± 7.05 min vs 10.34 ± 6.82 min, P = 0.21), or polyp detection rate (32.8% vs 31.3%, P = 0.75). On the subgroup analysis, there was no significant difference in terms of cecal intubation time by trainees (88.1% vs 84.8%, P = 0.40), ileal intubation rate (82.5% vs 79.0%, P = 0.38) or total colonoscopy time (23.24 ± 13.95 min vs 22.56 ± 9.94 min, P = 0.88). On multivariate analysis, the independent determinants of faster cecal time were consultant-performed procedures (P < 0.001), male patients (P < 0.001), non-usage of hyoscine (P < 0.001) and better bowel preparation (P = 0.01). The determinants of better polyp detection rate were older age (P < 0.001), no history of previous abdominal surgery (P = 0.04), patients not having esophagogastroduodenoscopy in the same setting (P = 0.003),

关键词： Cap Hood Cecum Colonoscopy Cecal intubation Colonic polyps

Learning curve for double-balloon enteroscopy: Findings from an analysis of 282 procedures

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World Journal of Gastrointestinal Endoscopy 2012年第8期4卷 368-372页

作者： hoi-poh tee Soon-Hin How Arthur J Kaffes A W Morrow Gastroenterology and Liver Centre Royal Prince Alfred Hospital Camperdown Sydney NSW 2050 Australia Department of Medicine Gastroenterology Unit Hospital Tengku Ampuan Afzan Jalan Tanah Putih 25100 Kuan-tan Pahang Malaysia Kulliyyah of Medicine International Islamic University of Malaysia Jalan Hospital 25100 Kuantan Pahang Malaysia

AIM: To determine the learning curves for antegrade double-balloon enteroscopy (aDBE) and retrograde DBE (rDBE) by analyzing the technical success rates. METHODS: A retrospective analysis in a tertiary referral center. This study reviewed all cases from June 2006 to April 2011 with a target lesion in the small-bowel identified by either capsule endoscopy or computed tomography scan posted for DBE examinations. Main outcome measurements were: (1) Technical success of aDBE def ined by f inding or excluding a target lesion after achieving suff icient length of small bowel intubation; and (2) Technical success for rDBE was def ined by either f inding the target lesion or achieving stable overtube placement in the ileum. RESULTS: Two hundred and eighty two procedures fulf illed the inclusion criteria and were analyzed. These procedures were analyzed by blocks of 30 cases. Therewas no distinct learning curve for aDBE. Technical success rates for rDBE continued to rise over time, although on logistic regression analysis testing for trend, there was no signif icance (P = 0.09). The odds of success increased by a factor of 1.73 (95% CI: 0.93-3.22) for rDBE. For these data, it was estimated that at least 30-35 cases of rDBE under supervision were needed to achieve a good technical success of more than 75%. CONCLUSION: There was no learning curve for aDBE. Technical success continued to increase over time for rDBE, although a learning curve could not be proven statistically. Approximately 30-35 cases of rDBE will be required for stable overtube intubation in ileum.

关键词： Double-balloon enteroscopy Learning curve Credential Training Success rate

Atomically Substitutional Engineering of Transition Metal Dichalcogenide Layers for Enhancing Tailored Properties and Superior Applications

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Nano-Micro Letters 2024年第5期16卷 248-284页

作者： Zhaosu Liu Si Yin tee Guijian Guan Ming‑Yong Han Institute of Molecular Plus Tianjin UniversityTianjin 300072People’s Republic of China Institute of Materials Research and Engineering A*STARSingapore 138634Singapore

Transition metal dichalcogenides(TMDs)are a promising class of layered materials in the post-graphene era,with extensive research attention due to their diverse alternative elements and fascinating semiconductor *** MX2 layers with different metal and/or chalcogen elements have similar structural parameters but varied optoelectronic properties,providing opportunities for atomically substitutional engineering via partial alteration of metal or/and chalcogenide atoms to produce ternary or quaternary *** resulting multinary TMD layers still maintain structural integrity and homogeneity while achieving tunable(opto)electronic properties across a full range of composition with arbitrary ratios of introduced metal or chalcogen to original counterparts(0–100%).Atomic substitution in TMD layers offers new adjustable degrees of freedom for tailoring crystal phase,band alignment/structure,carrier density,and surface reactive activity,enabling novel and promising *** review comprehensively elaborates on atomically substitutional engineering in TMD layers,including theoretical foundations,synthetic strategies,tailored properties,and superior *** emerging type of ternary TMDs,Janus TMDs,is presented specifically to highlight their typical compounds,fabrication methods,and potential ***,opportunities and challenges for further development of multinary TMDs are envisioned to expedite the evolution of this pivotal field.

关键词： Transition metal dichalcogenides Atomic substitution Tailored structure Tunable bandgap Enhanced applications

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An updated inventory of marine opisthobranch(Mollusca,Gastropoda)from the territorial waters of the Republic of Mauritius

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Journal of Oceanology and Limnology 2024年第1期42卷 226-243页

作者： Lisa AH SHEE tee Chandani APPADOO Daneshwar PUCHOOA Vishwakalyan BHOYROO Department of Agricultural&Food Science Faculty of AgricultureUniversity of MauritiusRéduit 80837Mauritius Department of Biosciences&Ocean Studies Pole of Research Excellence Sustainable Marine BiodiversityFaculty of ScienceUniversity of MauritiusRéduit 80837Mauritius

Island ecosystems support diverse aquatic invertebrate communities comprising endemic *** of existing species is important for *** this study,a checklist of marine opisthobranch from the Republic of Mauritius is presented.A combination of benthic surveys(50 m×5 m in triplicates),rover diving techniques and photo documentation were used over two years(2018–2020)within 35 sheltered and unsheltered *** and molecular analysis were used for *** composition within sheltered and unsheltered areas in Mauritius was estimated using the Bray-Curtis *** checklist featured 117 species belonging to 61 genera and 28families,of which 13 are new *** findings increased the knowledge of opisthobranch diversity from the Mauritius by 15.4%.Among the listed species,the distribution range of Cyerce nigra,Actinocyclus papillatus,and Phyllidia picta extended from the Western Pacific to the South Western Indian *** analysis of the undescribed Gymnodoris *** it resembled Gymnodoris *** Hawaii and were different by a genetic distance value of 10.6%.The species richness and evenness were higher within the sheltered regions of Mauritius which harboured the food resource of *** areas as compared to unsheltered regions were heavily populated,suggesting the probable influence of wave actions on opisthobranch diversity and *** order Nudibranchia was reported as most speciose,with 86 *** Sacoglossa and Nudibranchia were observed only on macroalgae and sponges *** abundance was also recorded on shipwrecks which are the most common form of artificial *** the inclusion of observations from previous studies,201species belonging to 94 genera and 36 families are now known from the Mauritius.

关键词： marine opisthobranch inventory new record occurrence Republic of Mauritius Indian Ocean

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A single micro-LED manipulation system based on micro-gripper

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Nanotechnology and Precision Engineering 2024年第2期7卷 45-52页

作者： Jie Bai Pingjuan Niu Erdan Gu Jianming Li Clarence Augustine TH tee School of Mechanical Engineering Tiangong University School of Electronic and Information Engineering Tiangong University Institute of Photonics University of Strathclyde Tianjin Key Laboratory of Micro Low Gravity Environment Simulation Technology Tianjin Aerospace Electromechanical Equipment Research Institute Department of Electrical and Information Engineering School of Physics and Electrical Information EngineeringZhejiang Normal University

Micro-LEDs(μLEDs) have advantages in terms of brightness, power consumption, and response speed. In addition, they can also be used as micro-sensors implanted in the body via flexible electronic skin. One of the key techniques involved in the fabrication of μLED-based devices is transfer printing. Although numerous methods have been proposed for transfer printing, improving the yield of μLED arrays is still a formidable task. In this paper, we propose a novel method for improving the yield of μLED arrays transferred by the stamping method, using an innovative design of piezoelectrically driven asymmetric micro-gripper. Traditional grippers are too large to manipulate μLEDs, and therefore two micro-sized cantilevers are added at the gripper tips. A μLED manipulation system is constructed based on the micro-gripper together with a three-dimensional positioning system. Experimental results using this system show that it can be used successfully to manipulate μLED arrays.

关键词： Micro-gripper Micro-LED Transfer printing Manipulation

A nerve-like self-healable conductive wire

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National Science Review 2024年第06期 89-90页

作者： Xuemei Fu Benjamin C.K.tee Department of Materials Science and Engineering National University of Singapore Institute for Health Innovation and Technology National University of Singapore

In wearables and robotics, it is often required to deploy electronic devices at different spatially distributed locations for multi-functionality [1–3]. Thus, conductive wires for efficient interconnection of various electronic devices are ***, in practical applications, the frequent motion of wearers and robots will result in high-strain deformations of these wires, which could cause irreparable damage.

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GLOBAL CIVILIZATION INITIATIVE HELPS RESET THE GLOBAL ORDER

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China Report ASEAN 2024年第5期9卷 62-63页

作者： Ong tee Keat the Belt and Road Initiative Caucus for Asia Pacific(BRICAP)

The rollout of the Global Civilization Initiative(GCI)in 2023 introduced a new public good to *** Chinese initiative has driven home a clear message that all nations have the right to choose their own development paths in their pursuit of modernization,which is not necessarily synonymous with Westernization,as demonstrated by China’s example.

关键词： RESET pursuit necessarily

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