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Easy removing of phenol from wastewater using vegetable oil-based organic solvent in emulsion liquid membrane process

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Chinese journal of Chemical Engineering 2017年第1期25卷 45-52页

作者： Norasikin Othman Norul Fatiha Mohamed Noah Lim Yin Shu Zing-Yi ooi Norela jusoh Mariani Idroas Masahiro Goto Centre of Lipids Engineering and Applied Research (CLEAR) Ibnu Sina Institute for Scientuific and Industrial Research (Ibnu Sina ISIR) Universiti Teknologi Malaysia 81310 UTM Johor BahruJohor Malaysia Faculty of Chemicul and Energy Engineering Universiti Teknologi Malaysia 81310 UTM Johor BahruJohor Malaysia Department of Applied Chemistry Graduate School of Engineering Kyushu University 744 Motooka Nishi-ka Fukuoka-shi fukuoka 819-0395Japan

Phenol is considered as pollutant due to its toxicity and carcinogenic ***,variety of innovative methods for separation and recovery of phenolic compounds is developed in order to remove the unwanted phenol from wastewater and obtain valuable phenolic *** of potential method is extraction using green based liquid organic ***,the feasibility of using palm oil was *** this research,palm oil based organic phase was used as diluents to treat a simulated wastewater containing 300×10^(-6) of phenol solution using emulsion liquid membrane process(ELM).The stability of water-in-oil(W/O) emulsion on diluent composition and the parameters affecting the phenol removal efficiency and stability of the emulsion;such as emulsification speed,emulsification time,agitation speed,surfactant concentration,pH of external phase,contact time,stripping agent concentration and treat ratio were carried *** results of ELM study showed that at ratio7 to 3 of palm oil to kerosene,5 min and 1300 r·min^(-1) of emulsification process the stabile primary emulsion were ***,no carrier is needed to facilitate the phenol *** experimental conditions of500 r·min^(-1) of agitation speed,3%Span 80,pH 8 of external phase,5 min of contact time,0.1 mol·L^(-1) NaOH as stripping agent and 1:10 of treat ratio,the ELM process was very promising for removing the phenol from the *** extraction performance at about 83%of phenol was removed for simulated wastewater and an enrichment of phenol in recovery phase as phenolate compound was around 11 times.

关键词： Vegetable palm oil-based Liquid membrane Phenol removal Wastewater

Induced noise of impeller stuck and passive rotation state in multi-stage pump without power drive under natural flow conditions

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journal of Hydrodynamics 2023年第5期35卷 1008-1026页

作者： Run-ze Zhou Hou-lin Liu Ru-nan Hua Liang Dong kim Tiow ooi Cui Dai Si-yuan Hu Research Center of Fluid Machinery Engineering and Technology Jiangsu UniversityZhenjiang212013China National Research Center of Pumps Jiangsu UniversityZhenjiang212013China School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingaporeSingapore Wuhan Second Ship Design and Research Institute Wuhan430060China School of Energy and Power Engineering Jiangsu UniversityZhenjiang212013China

The natural flow cooling strategy is commonly employed in modern high-speed vessels and nuclear-powered submarines. These vessels rely on the energy generated by their own speed to drive the cooling system and supply cooling water to the condenser. The circulating pump, which operates without a motor drive under natural flow conditions, is a large resistance component in the cooling system. However, it is also the primary noise source, significantly impacting the vessel’s safe operation and acoustic stealth performance. This study investigates the induced noise characteristics of a multi-stage pump under natural flow conditions by experiment, computational fluid dynamics (CFD), and acoustic finite element method. The analysis encompasses the distribution of the flow field, variations in acoustic power, spectral features of flow-induced noise, and directivity of external field radiation noise under different natural flow conditions. The results show that the acoustic power distribution is correlated with the flow field. When the impeller is stuck, the noise sources primarily concentrate in the flow separation area at the blade’s leading edge, the interface area between the impeller and the guide vane, and the flow shock area inside the guide vane. Conversely, when the impeller rotates passively, the blade wake area has a higher acoustic power. The flow noise spectrum under natural flow conditions mainly exhibits broadband and discrete characteristics. Additionally, the pump structure influences the external field radiation noise, and its directivity varies with different flow rates and characteristic frequencies. This study provides valuable insights into optimal design to reduce the noise of the circulating pump in the vessel’s natural flow cooling system. It is essential for ensuring the safe operation and acoustic stealth performance of high-speed vessels and nuclear-powered submarines.

关键词： Natural flow condition multi-stage pump flow induced noise acoustic power radiation noise directivity

Biobrane^(TM) for burns of the pubic region: minimizing dressing changes

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Military Medical Research 2019年第1期6卷 89-92页

作者： jia-jun Feng jia Le See Abby Choke Adrian ooi Si jack Chong Department of Plastic Reconstructive and Aesthetic Surgery Singapore General Hospital University of Auckland Faculty of Medical and Health Sciences

Background: The pubic region is often involved in accidental hot water or soup-spill burns. Most of these wounds are superficial partial thickness burns. Due to their proximity to the urinary system, as well as vaginal and anal openings,these burns are easily contaminated. Daily dressings are routinely prescribed as the sole treatment. The cumbersome dressing process is uncomfortable and embarrassing for patients. Biobrane^(TM) is a bilayered biosynthetic dressing. Its coverage of superficial partial thickness burns promotes wound healing and allows one-time *** presentations: We report two patients who suffered superficial dermal burns over their pubic region. One patient had 23% total body surface area(TBSA) burns over her lower abdomen, both thighs and pubic region. The second patient had 10% TBSA burns that involved her perineum and the medial sides of both thighs and *** were managed with the standard resuscitation protocol in the initial phase. Their burn injuries were managed by shaving, Foley catheterization and Biobrane^(TM) coverage. Their wounds healed uneventfully without *** epithelization was achieved by post-operative day seven. Both patients consented to medical photography and academic ***: Shaving and catheterization improved the hygiene of the burns of the pubic area. The Biobrane^(TM)method circumvents the need of regular dressing changes, eliminating the pain due to dressing changes and preserving patient dignity.

关键词： Pubic Thermal burns Perineum Dressing BiobraneTM

43 Gbit/s x 54 ch Transmission with Dense 75 GHz Channel Spacing in NRZ Modulation Scheme

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光学学报 2003年第S1期23卷 564-565页

作者： kentaro Nakamura Hiroki ooi Takafumi Terahara Takeshi Hoshida George Ishikawa Fujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 JapanFujitsu Laboratories Ltd. 4-1-1 Kamikodanaka Nakahara-ku Kawasaki 211-8588 Japan

We demonstrated 2.16-Tbit/s (43 Gbit/s x 54 ch) WDM transmission over 600 km of standard single-mode fiber with high spectral efficiency 0.53 bit/s/Hz using optimized optical mux/demux filters for 75-GHz channel spaci... 详细信息

关键词： NRZ with Gbit/s x 54 ch Transmission with Dense 75 GHz Channel Spacing in NRZ Modulation Scheme in GHz

Intraductal papillary neoplasm of the bile duct in liver cirrhosis with hepatocellular carcinoma

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World journal of Gastroenterology 2011年第14期17卷 1923-1926页

作者： jing Xu Yasunori Sato kenichi Harada Norihide Yoneda Yasuni Nakanuma Teruyuki Ueda Atsushi kawashima Akishi ooi Department of Human Pathology Kanazawa University Graduate School of Medicine Kanazawa 920-8640 Japan Department of Pathology Shanxi Medical University Taiyuan 030001 Shanxi Province China Internal Medicine for Digestive Organs Kanazawa University Graduate School of Medicine Kanazawa 920-8640 Japan Department of Molecular Pathology Kanazawa University Graduate School of Medicine Kanazawa 920-8640 Japan

A case of intraductal papillary neoplasm of the bile duct (IPNB) arising in a patient with hepatitis B-related liver cirrhosis with hepatocellular carcinoma (HCC) is reported. A 76-year-old man was admitted to our hospital with recurrent HCC. Laboratory data showed that levels of carcinoembryonic antigen and carbohydrate antigen 19-9 were elevated. He died of progressive hepatic failure. At autopsy,in addition to HCCs,an intraductal papillary proliferation of malignant cholangiocytes with fibrovascular cores was found in the dilated large bile ducts in the left lobe,and this papillary carcinoma was associated with an invasive mucinous carcinoma (invasive IPNB). Interestingly,extensive intraductal spread of the cholangiocarcinoma was found from the reactive bile ductular level to the interlobular bile ducts and septal bile ducts and to the large bile ducts in the left lobe. Neural cell adhesion molecule,a hepatic progenitor cell marker,was detected in IPNB cells. It seems possible in this case that hepatic progenitor cells located in reactive bile ductules in liver cirrhosis may have been responsible for the development of the cholangiocarcinoma and HCC,and that the former could have spread in the intrahepatic bile ducts and eventually formed grossly visible IPNB.

关键词： Papillary carcinoma Bile duct neoplasms Liver cirrhosis Progenitor cells Hepatocellular carcinoma Neural cell adhesion molecules

MRI Observations of Patellar Tendon Length Change after ACL Reconstruction with Hamstring Autografts

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journal of Huazhong University of Science and Technology(Medical Sciences) 2017年第4期37卷 577-581页

作者：李皓桓张小龙 Gota ooi Numazaki Hironori Miho Sekiguchi Shin-ichi konno Department of Orthopedics Renmin Hospital of Wuhan University Department of Orthopedic Surgery Fukushima Medical University

The post-operative patellar tendon length was studied to evaluate the possible tendon length change after anterior cruciate ligament（ACL） reconstruction with hamstring autografts. The Insall-Salvati index, modified Insall-Salvati index, curved modified Insall-Salvati index and Caton-Deschamps index were observed by MRI during a follow-up period of 12 weeks on 20 ACL reconstructed knees. The results showed no patellar baja or alta pre-existed on those ACL injured patients. After a follow-up period of 12 weeks, no patellar tendon length change was observed. It is suggested that the change of patella was not the primary reason that may contribute to the premature patellofemoral joint osteoarthritis after ACL reconstruction.

关键词： patellar tendon hamstrings anterior cruciate ligament reconstruction

Acute testicular ischaemia following aortoiliac stenting for aortoiliac occlusive disease

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Asian journal of Urology 2019年第4期6卷 377-379页

作者： Li-Tsa koh kiat Huat ooi Foo Cheong Ng Changi General Hospital Ringgold Standard Institution Singapore National University Cancer Institute Ringgold Standard Institution Singapore

Endovascular treatment is increasingly employed as the treatment for symptomatic aortoiliac occlusive *** of the possible complications of aortoiliac stenting is the development of *** present a case of a 60-year-old patient presenting with right scrotal pain immediately following aortoiliac stenting for right common iliac,proximal external iliac and proximal internal iliac arteries *** was found to have testicular ischaemia with absent blood flow on duplex *** patient was managed expectantly and reduced blood flow spontaneously returned to the testis over the next few weeks.

关键词： Acute testicular ischaemia Testis Ischaemia Thromboembolism

Femtoseconds soliton mode-locked erbium-doped fiber laser based on nickel oxide nanoparticle saturable absorber

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Chinese Optics Letters 2017年第10期15卷 28-32页

作者： A.Nady M.H.M.Ahmed A.A.Latiff C.H.Raymond ooi S.W.Harun Department of Physics Faculty of ScienceUniversity of Malaya Physics Department Faculty of ScienceBeni Suef University Department of Electrical Engineering Faculty of EngineeringUniversity of Malaya Faculty of Electronic and Computer Engineering Universiti Teknikal Malaysia Melaka

We demonstrate a femtosecond mode-locked erbium-doped fiber laser（EDFL） using a nickel oxide（Ni O） as a saturable absorber（SA）. Ni O nanoparticles are hosted into polyethylene oxide film and attached to fiber ferrule in the laser cavity. The Ni O-SA shows a 39% modulation depth with a 0.04 MW∕cm^2 saturation intensity. Our ring laser cavity based on erbium-doped active fiber with managed intracavity dispersion has the ability to generate ultrashort pulses with a full width at half-maximum（FWHM） of around 2.85 nm centered at 1561.8 *** pulses repeat at a frequency of 0.96 MHz and duration of 950 fs.

关键词： EDF Femtoseconds soliton mode-locked erbium-doped fiber laser based on nickel oxide nanoparticle saturable absorber

Monkeypox awareness,knowledge,and attitude among undergraduate preclinical and clinical students at a Malaysian dental school:An emerging outbreak during the COVID-19 era

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Asian Pacific journal of Tropical Medicine 2022年第10期15卷 461-467页

作者： Galvin Sim Siang Lin Wen Wu Tan Daryl Zhun kit Chan kai Shen ooi Hasnah Hashim Department of Dental Materials Faculty of DentistryAsian Institute of MedicineScience and Technology(AIMST)University08100BedongKedahMalaysia Department of Dental Public Health Faculty of DentistryAsian Institute of MedicineScience and Technology(AIMST)University08100BedongKedahMalaysia Department of Paediatrics Faculty of MedicineUniversiti Kebangsaan Malaysia Medical Centre56000Kuala LumpurMalaysia

Objective:To evaluate the awareness,knowledge,and attitude on monkeypox viral infection among preclinical and clinical dental students in ***:A cross-sectional study was conducted among 229 preclinical and clinical dental students via an online self-reported *** questionnaire included 3 items on awareness,15 items on knowledge,9 items on attitude and 2 open-ended *** were presented as frequencies and ***-square test was used to compare knowledge and awareness scores between preclinical and clinical dental students and content analysis was performed for open-ended ***:Preclinical and clinical dental students were aware of the existence of monkeypox(89.5%and 94.4%,respectively),that the disease emerged in non-endemic countries(81.0%and 87.1%,respectively)and that it was declared a public health emergency of international concern by the World Health Organization(73.3%and 79.0%,respectively).Clinical dental students’overall knowledge level was significantly higher than preclinical dental students(P=0.014).Both preclinical(95.2%)and clinical(96.8%)dental students demonstrated positive attitudes toward monkeypox with no significant difference(P=0.736)noted between *** themes emerged from the open-ended questions:(1)reimplementation of nationwide lockdown,(2)impact on the economy and health,and(3)disruption to the educational *** also anticipated their face-to-face learning to be reduced should there be a new ***:Both preclinical and clinical dental students showed comparable awareness and attitudes,while the latter demonstrated greater satisfactory knowledge toward the re-emergence of monkeypox during the COVID-19 ***,efforts to improve dental students’understanding of this alarming outbreak are required,to safeguard their health and minimise transmission.

关键词： Communicable disease Monkeypox virus Public health Tropical disease Zoonoses