40 results on '"Aung, Min"'
Search Results
2. Serological Evidence of Zika Virus Infection in Febrile Patients and Healthy Blood Donors in Sabah, Malaysian Borneo, 2017–2018
- Author
-
Shahnaz Binti Sabri, Daisuke Mori, Shingo Inoue, Saliz Binti Shaharom, Khine Mya Nwe, Kamrudin Ahmed, Mya Myat Ngwe Tun, Aung Min Soe, Omar Kwang Kugan, Jecelyn John, Kouichi Morita, and Jiloris Frederick Dony
- Subjects
Adult ,Male ,Adolescent ,Fever ,Serological evidence ,Blood Donors ,Antibodies, Viral ,Zika virus ,Young Adult ,Borneo ,Neutralization Tests ,Seroepidemiologic Studies ,Virology ,Neutralization test ,Humans ,Medicine ,Seroprevalence ,Child ,Igg elisa ,biology ,Zika Virus Infection ,business.industry ,Incidence (epidemiology) ,Malaysia ,Infant ,Febrile illness ,Zika Virus ,Middle Aged ,Serum samples ,biology.organism_classification ,Infectious Diseases ,Child, Preschool ,Immunoglobulin G ,Female ,Parasitology ,business ,Research Article - Abstract
Several Zika virus (ZIKV) seroprevalence studies have been conducted in Africa, Asia, Oceania, the Americas, and the Caribbean. However, studies on ZIKV seroprevalence are limited in Malaysia though several studies have shown that the disease is endemic in the Malaysian state of Sabah. To evaluate the seroprevalence of ZIKV infection, 818 serum samples were collected from febrile patients and healthy blood donors from the Kudat and Kota Kinabalu districts in Sabah from 2017 to 2018. They were screened for ZIKV infection by IgM and IgG ELISA, and positive ZIKV IgM samples were subjected to a 90% neutralization test for confirmation. Twenty-four (6% [95% CI 4 to 8]) confirmed and two (0.5% [95% CI 0.13 to 1.8]) probable ZIKV infections were detected among 400 febrile illness patients. Of 418 healthy blood donor samples, six (1.4% [95% CI 0.65 to 3]) were determined as confirmed ZIKV infections and six (1.4% [95% CI 0.65 to 3]) indicated probable ZIKV infection. This is the first study on the seroprevalence of ZIKV infections among patients and healthy blood donors in Sabah. Compared with previous studies in Malaysia, this study shows that the incidence of ZIKV infection has increased. It also suggests that a sero-surveillance system is essential to determine the circulation of ZIKV in Sabah, Malaysia.
- Published
- 2022
3. PO-03-045 MAGNETIC RESONANCE IMAGING IN PATIENTS WITH MRI UNLABELLED CARDIAC IMPLANTABLE ELECTRONIC DEVICES. ASSOCIATED RISK, SAFETY AND LONG TERM CLINICAL OUTCOMES FROM A SINGLE U.K TERTIARY CENTRE
- Author
-
Joseph Mayer, Sarah Prescott, Vincent J. Walker, Aung Min Thant, Harry Poole, Sam Butler, Thanh Phan, and Ash Y. Patwala
- Subjects
Physiology (medical) ,Cardiology and Cardiovascular Medicine - Published
- 2023
4. Coinfection and circulation of chikungunya virus and dengue virus in pediatric patients in Myanmar, 2019
- Author
-
Mya Myat Ngwe Tun, Aung Kyaw Kyaw, Takeshi Nabeshima, Shyam Prakash Dumre, Aung Min Soe, Khine Mya Nwe, Su Su Myaing, Ei Phyu Lwin, Ye Thu Win, Shingo Inoue, Yuki Takamatsu, Takeshi Urano, Hlaing Myat Thu, Kyaw Zin Thant, Zaw Than Htun, and Kouichi Morita
- Subjects
Infectious Diseases ,Immunology ,Microbiology - Published
- 2023
5. RF11 | PSAT370 I-PET Score: Combining Whole Body Iodine Scan and 18 Fluorodeoxyglucose Positron Emission Topography to Predict Progression in Thyroid Cancer
- Author
-
Ayanthi Wijewardene, Jeremy Hoang, Aung Min Maw, Matti Gild, Lyndal Tacon, Paul Roach, Geoffrey Schembri, David Chan, and Roderick Clifton-Bligh
- Subjects
Endocrinology, Diabetes and Metabolism - Abstract
Introduction A well-known 'flip flop' phenomenon exists between whole-body scans (WBS) and 18FFDG PET imaging in differentiated thyroid cancer (DTC) such that cancer progression is typically associated with reduced iodine uptake and increased FDG avidity. Patients with FDG avidity have a poor clinical outcome while those with iodine avid lesions are more responsive to radioactive iodine therapy (RAI) and have a better prognosis. A spectrum however exists, as thyroid cancers become less well differentiated, when they will be both iodine and FDG avid. Current scoring systems in thyroid cancer are limited to a single imaging data set. We propose a new scoring system (I-PET) combining WBS and FDG findings to identify patients more likely to be refractory to RAI, and who may be ideal candidates for 're-differentiation' before RAI treatment. Methods Retrospective analysis of 142 patients age > 18 with differentiated thyroid cancer who had a 18FFDG PET and WBS within a 6 month period of each other between 2010 and 2020. Initial pair of 18F FDG PET and WBS were reviewed by two independent nuclear medicine physicians and an IPET score was assigned: IPET [0]: Iodine –ve, FDG –ve, IPET [1]: Iodine +ve, FDG –ve, IPET [2]: Iodine +ve, FDG +ve and IPET [3]: Iodine –ve, FDG +ve. Patients with FDG +ve lesions (I-PET 2 and I-PET 3) were further classified into group 'a' and 'b' if SUVmax was less than or greater than 5 respectively. Follow-up data was obtained by chart review. Progression was defined as either structural recurrence as per RECIST 1.1 or equivalent clinical assessment, or biochemical incomplete response with an unstimulated Tg > 1ug/L. The study was approved by IRB (ETH00674/ STE01494). Results Of the 142 patients included in the study 121 patients had follow up data available for review. At baseline, 49 patients were classified as IPET [0], 10 as IPET [1], 16 as IPET [2] and 46 as IPET [3]. Progression was identified in 49% (59/121) patients; of which 54 were structural and 5 biochemical. Patients classified as [2b] and [3b] had a recurrence rate of 88% (7/8) and 78% (25/32) respectively, while IPET [0] patients had 22% (11/49) recurrence (p < 0.001). Patients classified as IPET [3b] were 10.4 times more likely to commence on tyrosine kinase inhibitor therapy (p=0.005) and had a 8.1 times greater mortality rate (p=0.02) than patients in the other IPET groups. Conclusion IPET score is a novel scoring system incorporating WBS and 18FFDG PET imaging which predicts progression and death in patients with FDG avid thyroid cancer. Presentation: Saturday, June 11, 2022 1:00 p.m. - 3:00 p.m., Saturday, June 11, 2022 1:48 p.m. - 1:53 p.m.
- Published
- 2022
6. I-PET score: Combining whole body iodine and
- Author
-
Ayanthi, Wijewardene, Jeremy, Hoang, Aung Min, Maw, Matti, Gild, Lyndal, Tacon, Paul, Roach, Geoffrey, Schembri, David, Chan, and Roderick, Clifton-Bligh
- Abstract
We propose a new scoring system (I-PET) combining whole body scan (WBS) and FDG findings to identify patients who have or are likely to become refractory to radioactive iodine.Retrospective analysis of 142 patients age18 with differentiated thyroid cancer who had a F-18 labelled fluoro-2-deoxyglucose (Of 142 patients included in the study 121 patients had follow-up data available for review. At baseline, 49 patients were classified as I-PET [0], 10 as I-PET [1], 16 as I-PET [2] and 46 as I-PET [3]. Progression was seen in 11/49 (22%) of I-PET [0], 4/10 (40%) of I-PET [1], 10/16 (63%) of I-PET [2] and 34/46 (74%) of I-PET [3] (p 0.001). I-PET [2B] and I-PET [3B] had a progression rate of 88% (7/8) and 78% (25/32), respectively. I-PET [3B] were 9.6 times more likely to commence multikinase inhibitor therapy (p = 0.001) and had 8 times greater mortality (p = 0.003) than patients in other I-PET groups combined.I-PET is a simple readily acquired imaging biomarker that potentially enhances the dynamic risk stratification and guide treatment in thyroid cancer.
- Published
- 2022
7. Acute-phase Serum Cytokine Levels and Correlation with Clinical Outcomes in Children and Adults with Primary and Secondary Dengue Virus Infection in Myanmar between 2017 and 2019
- Author
-
Khine Mya Nwe, Mya Myat Ngwe Tun, Theingi Win Myat, Chris Fook Sheng Ng, Moh Moh Htun, Htin Lin, Nang Sarm Hom, Aung Min Soe, Annie Elong Ngono, Shinjiro Hamano, Kouichi Morita, Kyaw Zin Thant, Sujan Shresta, Hlaing Myat Thu, and Meng Ling Moi
- Subjects
Microbiology (medical) ,Infectious Diseases ,General Immunology and Microbiology ,viruses ,dengue ,Myanmar ,cytokines ,clinical severity ,Immunology and Allergy ,virus diseases ,Molecular Biology - Abstract
The dengue virus (DENV) has been endemic in Myanmar since 1970, causing outbreaks every 2–3 years. DENV infection symptoms range from mild fever to lethal hemorrhage. Clinical biomarkers must be identified to facilitate patient risk stratification in the early stages of infection. We analyzed 45 cytokines and other factors in serum samples from the acute phase of DENV infection (within 3–5 days of symptom onset) from 167 patients in Yangon, Myanmar, between 2017 and 2019. All of the patients tested positive for serum DENV nonstructural protein 1 antigen (NS1 Ag); 78.4% and 62.9% were positive for immunoglobulin M (IgM) and G (IgG), respectively; and 18.0%, 19.8%, and 11.9% tested positive for serotypes 1, 3, and 4, respectively. Although the DENV-4 viral load was significantly higher than those of DENV-1 or DENV-3, disease severity was not associated with viral load or serotype. Significant correlations were identified between disease severity and CCL5, SCF, PDGF-BB, IL-10, and TNF-α levels; between NS1 Ag and SCF, CCL5, IFN-α, IL-1α, and IL-22 levels; between thrombocytopenia and IL-2, TNF-α, VEGF-D, and IL-6 levels; and between primary or secondary infection and IL-2, IL-6, IL-31, IL-12p70, and MIP-1β levels. These circulating factors may represent leading signatures in acute DENV infections, reflecting the clinical outcomes in the dengue endemic region, Myanmar.
- Published
- 2022
8. Effect of dietary inclusion of Albizia saman pods on feed intake,digestibility, milk yield, and energy balance of crossbredHolstein Friesian transition cows
- Author
-
Tweltar Win, Tial, Rebecca Sung Chin, Kyawt, Yin Yin, Zaw Lin, Kyaw San Win, Aung Aung, Khin San Mu, and Aung, Min
- Subjects
albizia saman pods ,milk yield ,transition cows ,feed intake ,energy balance - Abstract
Songklanakarin Journal of Science an Technology (SJST), 44, 3, 668-675
- Published
- 2022
- Full Text
- View/download PDF
9. Zika virus infection in asymptomatic persons in Myanmar, 2018
- Author
-
Shingo Inoue, Khine Mya Nwe, Kyaw Zin Thant, Elizabeth Luvai, Mya Myat Ngwe Tun, Saw Wut Hmone, Corazon C. Buerano, Kouichi Morita, and Aung Min Soe
- Subjects
Indirect elisa ,030231 tropical medicine ,Myanmar ,Antibodies, Viral ,Asymptomatic ,Zika virus ,03 medical and health sciences ,0302 clinical medicine ,Neutralization test ,medicine ,Animals ,Humans ,030212 general & internal medicine ,biology ,Zika Virus Infection ,business.industry ,Public Health, Environmental and Occupational Health ,Outbreak ,Zika Virus ,General Medicine ,biology.organism_classification ,Serum samples ,Virology ,Flavivirus ,Infectious Diseases ,Caribbean Region ,Immunoglobulin M ,Africa ,biology.protein ,Parasitology ,Americas ,medicine.symptom ,business - Abstract
BackgroundZika virus (ZIKV) is a mosquito-borne flavivirus. Outbreaks of ZIKV infection have occurred in Africa, Southeast Asia, the Pacific Islands, the Americas and the Caribbean. Although most ZIKV infections are asymptomatic, cases of neurological manifestations have been described. The aim of the present study was to identify the prevalence of ZIKV infection among the asymptomatic persons in Myanmar in 2018.MethodsA total of 284 serum samples from apparently healthy persons were collected from Yangon, Myanmar in 2018. They were analysed for ZIKV infection by immunoglobulin M (IgM) capture enzyme-linked immunosorbent assay (ELISA), IgG indirect ELISA, 50% focus reduction neutralization test, real-time reverse transcription polymerase chain reaction (RT-PCR) and conventional RT-PCR.ResultsOf the 284 apparently healthy persons, 31.3% were positive for the presence of IgM against ZIKV and 94.3% were positive for anti-flavivirus IgG. Among the ZIKV IgM-positive samples, we confirmed ZIKV infection in 15.8% of asymptomatic persons by neutralization test and real-time RT-PCR.ConclusionsWe conclude that ZIKV infection was increasing among asymptomatic persons in the same area in Myanmar during 2018 compared with 2017. It is highly recommended to strengthen the surveillance system for ZIKV to prevent possible outbreaks.
- Published
- 2020
10. Bilateral facial neuritis associated with dabrafenib and trametinib after failure of neoadjuvant immunotherapy for stage III melanoma
- Author
-
Kerwin F. Shannon, Edwin J. Morrison, Andrew T. Li, Edward Hsiao, Georgina V. Long, Aung Min Maw, and Sydney Ch'ng
- Subjects
Oncology ,Proto-Oncogene Proteins B-raf ,medicine.medical_specialty ,Skin Neoplasms ,Pyridones ,medicine.medical_treatment ,Pyrimidinones ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,Oximes ,Medicine ,Humans ,Stage III melanoma ,Melanoma ,Trametinib ,Facial Neuritis ,business.industry ,Imidazoles ,Dabrafenib ,General Medicine ,Immunotherapy ,Neoadjuvant Therapy ,Mutation ,Surgery ,Facial Nerve Diseases ,business ,medicine.drug - Published
- 2021
11. Permeable ceramics filled with the threefraction electrofused corundum and the porcelain bond
- Author
-
Zo E Mo U, A. V. Belyakov, N. A. Popova, and Ye Aung Min
- Subjects
Materials science ,020502 materials ,General Engineering ,Corundum ,02 engineering and technology ,engineering.material ,021001 nanoscience & nanotechnology ,0205 materials engineering ,visual_art ,visual_art.visual_art_medium ,engineering ,Ceramic ,Composite material ,0210 nano-technology - Abstract
By means of the raw material grading the porous permeable material was prepared with the electrofused corundum with the porcelain PFL-1 bond. The samples with improved properties were obtained when introducing in the mass of 5 weigh percent of porcelain bond (above 100 % of the fller) after the burning at 1450 оC. Their ultimate strength at bending was 14,6 MPa, the open porosity was 44 % and the gas permeability factor was 0,85 micron2. Ref. 10. Tab. 3.
- Published
- 2018
12. Permeable Ceramic with Three-Fraction Electromelted Corundum Filler and Porcelain Binder
- Author
-
A. V. Belyakov, Zaw Ye Maw Oo, N. A. Popova, and Ye Aung Min
- Subjects
010302 applied physics ,Materials science ,020502 materials ,Fraction (chemistry) ,Corundum ,02 engineering and technology ,Bending ,engineering.material ,01 natural sciences ,Grain size ,0205 materials engineering ,Filler (materials) ,visual_art ,0103 physical sciences ,Ultimate tensile strength ,Materials Chemistry ,Ceramics and Composites ,engineering ,visual_art.visual_art_medium ,Ceramic ,Composite material ,Porosity - Abstract
Porous permeable materials are prepared by selecting the grain size composition with electromelted corundum filler and porcelain mix PFL-1 binder. Specimens with an improved set of properties are prepared with addition to the composition of 5 wt.% porcelain binder (above 100% filler) after firing at 1450°C. Specimen ultimate strength in bending is 14.6 MPa, open porosity 44%, and gas permeability coefficient 0.85 μm2.
- Published
- 2018
13. Detection of genotype-1 of dengue virus serotype 3 for the first time and complete genome analysis of dengue viruses during the 2018 epidemic in Mandalay, Upper Myanmar
- Author
-
Aung Kyaw Kyaw, Kyaw Ko Ko Htet, Su Su Myaing, Mya Myat Ngwe Tun, Kouichi Morita, Thidar Aung, Tu Tu Mar, Thein Thein Htwe, Khine Mya Nwe, Takeshi Nabeshima, Aung Min Soe, Hlaing Myat Thu, Thet Htoo Aung, Kyaw Zin Thant, and Ei Phyu Lwin
- Subjects
0301 basic medicine ,Serotype ,Male ,RNA viruses ,Viral Diseases ,Epidemiology ,viruses ,Myanmar ,Dengue virus ,medicine.disease_cause ,Pathology and Laboratory Medicine ,Pediatrics ,Dengue fever ,Disease Outbreaks ,Dengue Fever ,Dengue ,Geographical Locations ,0302 clinical medicine ,Medical Conditions ,Genotype ,Medicine and Health Sciences ,Child ,Phylogeny ,Molecular Epidemiology ,Multidisciplinary ,virus diseases ,Infectious Diseases ,Medical Microbiology ,Child, Preschool ,Viral Pathogens ,Viruses ,Medicine ,Female ,Pathogens ,Pediatric Infections ,Research Article ,Neglected Tropical Diseases ,Asia ,Infectious Disease Control ,Science ,030231 tropical medicine ,Genome, Viral ,Biology ,Disease Surveillance ,Serogroup ,Microbiology ,Virus ,03 medical and health sciences ,medicine ,Humans ,Viremia ,Serotyping ,Epidemics ,Microbial Pathogens ,Molecular epidemiology ,Whole Genome Sequencing ,Biology and life sciences ,Flaviviruses ,Organisms ,Tropical disease ,Outbreak ,biochemical phenomena, metabolism, and nutrition ,Dengue Virus ,medicine.disease ,Tropical Diseases ,Virology ,030104 developmental biology ,Cross-Sectional Studies ,Infectious Disease Surveillance ,People and Places - Abstract
Background: Dengue (DEN) is a neglected tropical disease, and surveillance of dengue virus (DENV) serotypes and genotypes is critical for the early detection of outbreaks. Risk factors for outbreaks include the emergence of new genotypes and serotype shifting. Methodology and principal findings: To understand the genomic and viral characteristics of DENV-infected patients, we conducted a cross-sectional descriptive study among pediatric patients admitted at the 550-bedded Mandalay Children Hospital during the 2018 DEN endemic season. We conducted virus isolation, serological tests, viremia level measurement, and whole-genome sequencing. Among the 202 serum samples, we detected 85 samples with DENV (46 DENV-1, 10 DENV-3, 26 DENV-4 and three multiple serotype co-infections) via reverse transcription quantitative/real-time PCR (RT-qPCR), and we obtained 49 DENV isolates (31 DENV-1, 10 DENV-3 and 8 DEN-4). We did not detect DENV-2 in this study. The viral genome levels in serum did not differ significantly among virus serotypes, infection status (primary versus secondary) and disease severity. Based on the phylogenetic analysis, we identified DENV-1 genotype-1, DENV-4 genotype-1 and DENV-3 genotype-3 and genotype-1 which was detected for the first time. Next-generation sequencing analysis revealed greater frequencies of nonsynonymous and synonymous mutations per gene in the nonstructural genes. Moreover, mutation rates were also higher among DENV-1. Conclusion/Significance: In conclusion, there was an increasing trend of DENV-3 cases during DENV endemic season in 2018 with the first detection of the genotype 1. However, DENV-1 has remained the predominant serotype in this study area since 2013, and we identified stop codon mutations in the DENV-1 genome. This report is the first to feature a complete genome analysis of the strains of DENV-3 and DENV-4 circulating among pediatric patients in Myanmar. This study highlighted the importance of annual surveillance for a better understanding of the molecular epidemiology of DENVs., PLoS ONE, 16(6), art. no. e0251314; 2021
- Published
- 2021
14. Case Report of 18F-FDG PET/CT Features of Polyacrylamide Hydrogel Mammoplasty
- Author
-
Samriti Sood, Geoffrey Schembri, and Aung Min Maw
- Subjects
Polyacrylamide Hydrogel ,medicine.medical_treatment ,Mammaplasty ,Acrylic Resins ,Mammoplasty ,Breast Neoplasms ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Fluorodeoxyglucose F18 ,Recurrence ,Positron Emission Tomography Computed Tomography ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Retroperitoneal liposarcoma ,neoplasms ,Positron Emission Tomography-Computed Tomography ,business.industry ,General Medicine ,Liposarcoma ,Middle Aged ,030220 oncology & carcinogenesis ,Fdg pet ct ,Female ,Ct imaging ,Nuclear medicine ,business - Abstract
A 57-year-old woman with a history of previous bilateral breast polyacrylamide hydrogel injection presented for 18F-FDG PET/CT imaging to investigate recurrent retroperitoneal liposarcoma. Incidental symmetrical FDG-positive accumulation was noted in the bilateral axillae tracking between the interpectoral planes. The finding is consistent with a chronic inflammatory process secondary to the migration of the polyacrylamide hydrogel injections.
- Published
- 2020
15. THE RELATIONSHIP BETWEEN FRANCHISEE AND FRANCHISOR: A QUALITATIVE APPROACH STUDY OF THE FAST FOOD FRANCHISING IN YANGON
- Author
-
Aung, Min
- Subjects
Franchising ,Franchisee Trust ,Franchisee Performance ,Quality of Relationship ,Franchisor-Franchisee Relationship ,Franchisor Supports - Abstract
UTCC International Journal of Business and Economics, 12, 3, 143-158
- Published
- 2020
- Full Text
- View/download PDF
16. Transition of University to Prosumer Consortium Energy Model
- Author
-
Thu, Kaung Si, Aung, Min Set, Ongsakul, Weerakorn, and Manjiparambil, Nimal Madhu
- Subjects
Signal Processing (eess.SP) ,Physics - Physics and Society ,FOS: Electrical engineering, electronic engineering, information engineering ,FOS: Physical sciences ,Physics and Society (physics.soc-ph) ,Electrical Engineering and Systems Science - Signal Processing - Abstract
The conventional electricity grid system has many critical issues, which could lead to power instability, blackout, and many other issues. One main perspective is to consume the relative amount of distributed renewable energy in the adaptation system. Prosumer Consortium Model in a small community can be one of the solutions to reduce the price of electricity, increase efficiency and provide a better electronification for University, moreover, to solve the frequent blackout of electricity at university level in developing countries. It can be the learning opportunity for the researchers as well as the complementary benefit for the consumers inside university's grid., Comment: The First National Conference on Engineering Research
- Published
- 2020
- Full Text
- View/download PDF
17. Unusual, neurological and severe dengue manifestations during the outbreak in Sri Lanka, 2017
- Author
-
Shanthi Attanayake, Rohitha Muthugala, Aung Min Soe, Shingo Inoue, Takeshi Nabeshima, Dulani Jayawardana, Corazon C. Buerano, Mya Myat Ngwe Tun, Tsuyoshi Ando, Daisuke Hayasaka, Kouichi Morita, Shyam Prakash Dumre, and Lakmali Rajamanthri
- Subjects
0301 basic medicine ,Adult ,Male ,Pediatrics ,medicine.medical_specialty ,Myocarditis ,Adolescent ,Genotype ,viruses ,Secondary infection ,030106 microbiology ,Antibodies, Viral ,Serology ,Dengue fever ,Disease Outbreaks ,Dengue ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Virology ,parasitic diseases ,medicine ,Humans ,030212 general & internal medicine ,Severe Dengue ,Child ,Phylogeny ,Aged ,Sri Lanka ,Molecular epidemiology ,business.industry ,Coinfection ,virus diseases ,Outbreak ,Infant ,biochemical phenomena, metabolism, and nutrition ,Dengue Virus ,Middle Aged ,medicine.disease ,Infectious Diseases ,Immunoglobulin M ,Child, Preschool ,Population study ,RNA, Viral ,Female ,Nervous System Diseases ,business ,geographic locations ,Encephalitis - Abstract
Background Sri Lanka experienced its largest dengue outbreak in 2017 with more than 185,000 dengue cases including at least 250 fatalities. Objectives Our study aimed to characterize the clinical, immunological and virological features of confirmed dengue patients in Sri Lanka during the outbreak in 2017 when unusual manifestations of severe dengue were observed. Study design Sera from 295 patients who were admitted to Teaching Hospital Kandy, Kandy, Sri Lanka between March 2017- January 2018 were subjected to NS1 antigen, IgM and IgG ELISAs, virus isolation, conventional and real time RT-PCR and next generation sequencing. Results Primary and secondary infections were detected in 48.5 % and 51.5 % of the study population, respectively. Two hundred twenty five DENV strains were isolated (219 DENV-2, one DENV-3, two DENV-4, two mixed infections of DENV-2 and -3 and one mixed infection of DENV-2 and -4). Unusual and severe manifestations such as encephalitis, encephalopathy, liver failure, kidney failure, myocarditis, Guillain–Barre syndrome and multi-organ failure were noted in 44 dengue patients with 11 deaths. The viraemia levels in patients with primary infection and unusual manifestations were significantly higher compared to those in patients with secondary infection. A new clade of DENV-2 Cosmopolitan genotype strains was observed with the strains closely related to those from China, Malaysia, Indonesia, Singapore and Taiwan. Conclusions The new clade of DENV-2 cosmopolitan genotype observed in Sri Lanka in 2017 caused an unprecedented, severe dengue outbreak. The emergence of DENV-3 and DENV-4 in the 2017 outbreak might cause future outbreaks in Sri Lanka.
- Published
- 2019
18. Correction to: Selenite-mediated production of superoxide radical anions in A549 cancer cells is accompanied by a selective increase in SOD1 concentration, enhanced apoptosis and Se–Cu bonding
- Author
-
Claire M. Weekley, Gloria Jeong, Michael E. Tierney, Farjaneh Hossain, Aung Min Maw, Anu Shanu, Hugh H. Harris, and Paul K. Witting
- Subjects
Inorganic Chemistry ,Biochemistry - Published
- 2019
19. Effect of Electrocorundum Powder Grain Size Composition with a Porcelain Binder on Porous Ceramic Gas Permeability and Strength
- Author
-
A. V. Belyakov, Ye Aung Min, N. A. Popova, and Zaw Ye Maw Oo
- Subjects
Materials science ,020502 materials ,Fineness ,Corundum ,02 engineering and technology ,engineering.material ,021001 nanoscience & nanotechnology ,Grain size ,Ceramic membrane ,0205 materials engineering ,Permeability (electromagnetism) ,visual_art ,Ultimate tensile strength ,Materials Chemistry ,Ceramics and Composites ,engineering ,visual_art.visual_art_medium ,Ceramic ,Composite material ,0210 nano-technology ,Porosity - Abstract
Porous permeable materials of electromelted corundum with fineness of 2 – 3 and 0.5 mm are prepared with a porcelain mix binder. Ratios in filler fractions 2 – 3 and 0.5 mm: 0/95, 35/60, 40/55, 45/50, 50/45, and 95/0. Specimens are compacted under a pressure of 24, 50, and 100 MPa and fired at 1350 and 1450°C. Sintered specimen ultimate strength in bending is from 1.9 to 15.3 MPa, open porosity 17 and 26%, gas permeability coefficient of single-fraction compositions from 1.19 to 3.27 μm2. The porous permeable ceramic material obtained is promising for use in the form of filters and ceramic membrane substrates.
- Published
- 2017
20. The nitroxide 4-methoxy TEMPO inhibits neutrophil-stimulated kinase activation in H9c2 cardiomyocytes
- Author
-
Gloria Jeong, Joanne M. Dennis, Paul K. Witting, Hyun Bo Kim, Martin Simone, Adrina F. Varda, Benjamin S. Rayner, XiaoSuo Wang, Belal Chami, Aung Min Maw, and Genevieve Fong
- Subjects
0301 basic medicine ,MAPK/ERK pathway ,Hypochlorous acid ,Neutrophils ,Biophysics ,Apoptosis ,Protein tyrosine phosphatase ,030204 cardiovascular system & hematology ,Biochemistry ,Cell Line ,Cyclic N-Oxides ,Ventricular Myosins ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Animals ,Humans ,Myocyte ,Myocytes, Cardiac ,Phosphorylation ,Tyrosine ,Molecular Biology ,Peroxidase ,Dose-Response Relationship, Drug ,biology ,Chemistry ,Kinase ,Transferrin ,Molecular biology ,Phosphoric Monoester Hydrolases ,Rats ,Enzyme Activation ,Oxidative Stress ,Protein Transport ,030104 developmental biology ,Gene Expression Regulation ,Organ Specificity ,Myeloperoxidase ,biology.protein ,Protein Kinases - Abstract
After acute myocardial infarction (AMI), neutrophils are recruited to the affected myocardium. Hypochlorous acid (HOCl) produced by neutrophil myeloperoxidase (MPO) damages cardiomyocytes and potentially expands the primary infarct. Rat cardiomyocyte-like cells were incubated with isolated human neutrophils treated with chemical activators in the absence or presence of nitroxide 4-methoxy-Tempo (MetT; 25 μM) for 4, 6 or 24 h; studies with reagent HOCl served as positive control. Treating cardiomyocytes with activated neutrophils or reagent HOCl resulted in a marked increase in protein tyrosine chlorination and a decline in protein tyrosine phosphatase (PTP) activity. On balance our data also supported an increase in phosphorylation of MAPK p38 and ERK1/2 suggestive of an intracellular hyperphosphorylation status and this was accompanied by decreases in cell viability, as judged by assessing caspases-3/7 activity. For cells exposed to activated neutrophils receptor-mediated uptake of transferrin decreased although total matrix metalloproteinase (MMP) activity was unaffected. Addition of MetT ameliorated protein tyrosine chlorination, decreased MAPK activity and restored receptor-mediated transferrin uptake and PTP activity in cardiomyocytes. Overall, adverse effects of neutrophil-derived HOCl on cultured cardiomyocytes were ameliorated by MetT suggesting that nitroxides may be beneficial to inflammatory pathologies, where neutrophil recruitment/activation is a prominent and early feature.
- Published
- 2017
21. Strengthening Binders for Porous Permeable Ceramic with Electromelted Corundum Filler
- Author
-
A. V. Belyakov, Zaw Ye Maw Oo, V. A. Karimova, N. A. Popova, and Ye Aung Min
- Subjects
010302 applied physics ,Materials science ,020502 materials ,Compaction ,Corundum ,02 engineering and technology ,engineering.material ,01 natural sciences ,Grain size ,0205 materials engineering ,Filler (materials) ,visual_art ,0103 physical sciences ,Ultimate tensile strength ,Materials Chemistry ,Ceramics and Composites ,engineering ,visual_art.visual_art_medium ,Particle size ,Ceramic ,Composite material ,Porosity - Abstract
Strong porous permeable ceramic is studied, prepared by selection of grain size compositions with filler of electromelted corundum grades F600 (100 – 200 μm), F360 (40 – 60 μm), and F120 (10 – 20 μm). The strengthening binders used are very fine corundum powder (~2 μm), alloyed with 0.25 wt.% MgO; a mixture of SiC (particle size 3 – 4 μm) and MgO (particle size 1 – 2 μm) in a ratio of 2:1. Specimens in the form of bars 60 × 15 × 5.5 mm are prepared by uniaxial semidry compaction under a pressure of 50 MPa (for single fraction compositions) and 25 MPa (for three-fraction compositions). Specimens are fired in air at temperatures from 1350 to 1550°C. Specimen open porosity varies from 28 to 43%, and ultimate strength in bending from 1 to 36 MPa. The best strength is obtained using a binder in the system SiC–MgO (5 wt.% binder above 100% of filler, σben = 36 MPa, and open porosity is 30%).
- Published
- 2017
22. Effect of Adding Porcelain on Properties of Porous Ceramic Based on Electromelted Corundum
- Author
-
A. V. Belyakov, Ye Aung Min, Zaw Ye Maw Oo, and N. A. Popova
- Subjects
010302 applied physics ,Materials science ,020502 materials ,Fineness ,Compaction ,Corundum ,02 engineering and technology ,Bending ,engineering.material ,01 natural sciences ,Ceramic membrane ,0205 materials engineering ,visual_art ,0103 physical sciences ,Ultimate tensile strength ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,engineering ,Ceramic ,Composite material ,Porosity - Abstract
Porous permeable ceramic is prepared from electromelted corundum (EMC) with fineness of about 0.5 mm with added porcelain. Compositions are prepared with different ratios of EMC/porcelain: 99/1, 97/3, 95/5, 93/7, and 90/10. Specimens in the form of bars with a size of 40 × 7 × 6.5 mm are prepared by uniaxial semidry compaction under a pressure of 25 and 50 MPa and fired at 1350 and 1450°C. Specimen open porosity varies from 22 to 30%, and ultimate strength in bending from 1.1 to 9.3 MPa. Porous ceramic is promising for filters and ceramic membrane substrates.
- Published
- 2017
23. THE INFLUENCE OF PORCELAIN BONDED ELECTRO-CAST CORUNDUM POWDER'S GRAIN-SIZE COMPOSITION ON THE POROUS CERAMICS' GAS PERMEABILITY AND STRENGTH
- Author
-
N. A. Popova, Zo E Mo U, A. V. Belyakov, and Ye Aung Min
- Subjects
Permeability (earth sciences) ,Materials science ,General Engineering ,engineering ,Corundum ,engineering.material ,Composite material ,Grain size ,Porous ceramics - Published
- 2017
24. Strengthening binders for the porous permeable ceramics with the electro-fused corundum aggregate
- Author
-
A. V. Belyakov, V. A. Karimova, A. V. U E. Mo. Zo, Ye Aung Min, and N. A. Popova
- Subjects
Materials science ,Aggregate (composite) ,Flexural strength ,Doping ,General Engineering ,engineering ,Corundum ,Particle size ,engineering.material ,Composite material ,Porosity ,Mix design ,Porous ceramics - Abstract
The strengthened porous ceramics was investigated in the article which had been obtained by the grain composition mix design using the electro-fused corundum aggregates: F600 (particle size is 100‒200 micron); F360 (40‒60 micron) and F120 (10‒20 micron). In the capacity of strengthening binders the highly dispersed corundum powders (about 2 micron) doped with 0,25 wt. % of MgO; and the mixture of SiC powder (3‒4 micron) and of MgO powder (1‒2 micron) in the ratio of 1:2 were used. The test-beams of the size 60×15×5,5 mm were obtained by means of uniaxial semi-dry compacting under the pressure of 50 MPa (for mono-fractional compositions) and of 25 MPa (for three-fractional compositions). The samples were burnt on the air at the temperatures from 1350 to 1550 °C. The open porosity varied from 28 to 43 %, the ultimate bending strength varied from 1 to 36 MPa. The highest strength was attained when the SiC‒MgO binder was used (5 wt. % of the binder over 100 % of the aggregate, the ultimate bending strength was 36 MPa, the open porosity was 30 %). Ref. 12. Tab. 5.
- Published
- 2017
25. THE RELATIONSHIP BETWEEN FRANCHISE AND FRANCHISOR
- Author
-
Aung, Min
- Subjects
Franchising ,Franchisor-Franchisee relationship ,Franchisee trust ,Franchisee performance ,Quality of relationship ,Franchisor supports - Abstract
UTCC International Journal of Business and Economics, 11, 1, 186-215
- Published
- 2019
- Full Text
- View/download PDF
26. Varying the Granulometric Composition of an Electrofused-Corundum-Based Ceramic with a Porcelain Binder to Control its Open Porosity and Strength
- Author
-
N. A. Popova, A. V. Belyakov, Zaw Ye Maw Oo, Ye Aung Min, and Kyaw Lwin Oo
- Subjects
010302 applied physics ,Materials science ,020502 materials ,Corundum ,02 engineering and technology ,engineering.material ,01 natural sciences ,Porous ceramics ,Membrane ,0205 materials engineering ,Flexural strength ,visual_art ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,engineering ,visual_art.visual_art_medium ,Particle ,Composition (visual arts) ,Ceramic ,Composite material ,Porosity - Abstract
A study is made of a strong porous ceramic based on granular mixes of a filler—electrofused corundum with particle sizes of 2 – 3 and 0.5 mm (95 wt.% of the mix) — and a porcelain binder (5 wt.%). Several mixes were prepared with different values for the 2 – 3 mm/0.5 mm ratio of filler-particle sizes: 0/95, 35/60, 40/55, 45/50, 50/45, and 95/0. The specimens were pressed at pressures of 25, 50 and 100 MPa and fired at temperatures of 1350 and 1450°C. The sintered specimens ranged from 19 to 143 MPa in ultimate flexural strength and 17 to 26% in open porosity. The results are attributed to the formation of a framework in the semifinished product along with regions outside the framework. The new porous permeable ceramic is promising for use in the form of filters and supports for ceramic membranes.
- Published
- 2016
27. Ore Geology, Fluid Inclusions, and (H-O-S-Pb) Isotope Geochemistry of the Sediment-Hosted Antimony Mineralization, Lyhamyar Sb Deposit, Southern Shan Plateau, Eastern Myanmar: Implications for Ore Genesis
- Author
-
Than Htay, Khin Zaw, Lv Xinbiao, Aung Min Oo, Sun Binke, and Munir Mohammed Abdalla Adam
- Subjects
Mineralization (geology) ,lcsh:Mineralogy ,lcsh:QE351-399.2 ,010504 meteorology & atmospheric sciences ,Geochemistry ,Geology ,engineering.material ,010502 geochemistry & geophysics ,Geotechnical Engineering and Engineering Geology ,01 natural sciences ,Southern Shan Plateau ,Diagenesis ,(H-O-S-Pb) isotopes ,fluid inclusions ,Ore genesis ,Isotope geochemistry ,Lyhamyar Sb deposit ,engineering ,Meteoric water ,Eastern Myanmar ,Fluid inclusions ,Pyrite ,Stibnite ,0105 earth and related environmental sciences - Abstract
The Lyhamyar deposit is a large Sb deposit in the Southern Shan Plateau, Eastern Myanmar. The deposit is located in the Early Silurian Linwe Formation, occurring as syntectonic quartz-stibnite veins. The ore body forms an irregular staircase shape, probably related to steep faulting. Based on the mineral assemblages and cross-cutting relationships, the deposit shows two mineralization stages: (1) the pre-ore sedimentary and diagenetic stage, and (2) the main-ore hydrothermal ore-forming stage (including stages I, II, and III), i.e., (i) early-ore stage (stage I) Quartz-Stibnite, (ii) late-ore stage (stage II) Quartz-calcite-Stibnite ±, Pyrite, and (iii) post-ore stage (stage III) carbonate. The ore-forming fluid homogenization temperatures from the study of primary fluid inclusions in quartz and calcite indicate that the ore-forming fluid was of a low temperature (143.8&ndash, 260.4 °, C) and moderate to high-salinity (2.9&ndash, 20.9 wt. % NaCl equivalent). Hydrogen and oxygen isotopes suggest that the ore-forming fluids of the Lyhamyar deposit were derived from circulating meteoric water mixed with magmatic fluids that underwent isotopic exchange with the surrounding rocks. Sulfur in Lyhamyar was dominated by thermochemical sulfate reduction (TSR) with dominant magmatic source sulfur. The lead isotope compositions of the stibnite indicate that the lead from the ore-forming metals was from the upper crustal lead reservoir and orogenic lead reservoir. On the basis of the integrated geological setting, ore geology, fluid inclusions, (H-O-S-Pb) isotope data, and previous literature, we propose a new ore-deposit model for the Lyhamyar Sb deposit: It was involved in an early deposition of pyrite in sedimentary and diagenetic stages and later Sb mineralization by mixing of circulating meteoric water with ascending magmatic fluids during the hydrothermal mineralization stage.
- Published
- 2020
28. Effects of 8 weeks of CPAP on lipid-based oxidative markers in obstructive sleep apnea: a randomized trial
- Author
-
Camilla M. Hoyos, Ronald R. Grunstein, Brendon J. Yee, Aung Min Maw, Craig L. Phillips, Paul K. Witting, and Sheila Sivam
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,Antioxidant ,Cognitive Neuroscience ,medicine.medical_treatment ,medicine.disease_cause ,Antioxidants ,Body Mass Index ,Behavioral Neuroscience ,Lipid oxidation ,oxidized lipids ,Internal medicine ,medicine ,Humans ,Vitamin E ,Continuous positive airway pressure ,Sleep Apnea, Obstructive ,Continuous Positive Airway Pressure ,business.industry ,Apnea ,General Medicine ,Middle Aged ,medicine.disease ,Lipids ,Obstructive sleep apnea ,Oxidative Stress ,Postprandial ,Endocrinology ,Female ,lipids (amino acids, peptides, and proteins) ,medicine.symptom ,Sleep ,business ,Biomarkers ,Oxidative stress - Abstract
Dyslipidaemia and increased oxidative stress have been reported in severe obstructive sleep apnea, and both may be related to the development of cardiovascular disease. We have previously shown in a randomized crossover study in patients with moderate to severe obstructive sleep apnea that therapeutic continuous positive airway pressure treatment for 8 weeks improved postprandial triglycerides and total cholesterol when compared with sham continuous positive airway pressure. From this study we have now compared the effect of 8 weeks of therapeutic continuous positive airway pressure and sham continuous positive airway pressure on oxidative lipid damage and plasma lipophilic antioxidant levels. Unesterified cholesterol, esterified unsaturated fatty acids (cholesteryl linoleate: C18:2; and cholesteryl arachidonate: C20:4; the major unsaturated and oxidizable lipids in low-density lipoproteins), their corresponding oxidized products [cholesteryl ester-derived lipid hydroperoxides and hydroxides (CE-O(O)H)] and antioxidant vitamin E were assessed at 20:30 hours before sleep, and at 06:00 and 08:30 hours after sleep. Amongst the 29 patients completing the study, three had incomplete or missing [CE-O(O)H] data. The mean apnea -hypopnoea index, age and body mass index were 38 per hour, 49 years and 32 kg m(-2) , respectively. No differences in lipid-based oxidative markers or lipophilic antioxidant levels were observed between the continuous positive airway pressure and sham continuous positive airway pressure arms at any of the three time-points [unesterified cholesterol 0.01 mm, P > 0.05; cholesteryl linoleate: C18:2 0.05 mm, P > 0.05; cholesteryl arachidonate: C20:4 0.02 mm, P = 0.05; CE-O(O)H 2.5 nm, P > 0.05; and lipid-soluble antioxidant vitamin E 0.03 μm, P > 0.05]. In this study, accumulating CE-O(O)H, a marker of lipid oxidation, does not appear to play a role in oxidative stress in obstructive sleep apnea. National Health and Medical Research Council project grant 301936
- Published
- 2014
29. Additional file 3: Table S1. of Family planning knowledge, attitudes and practices in refugee and migrant pregnant and post-partum women on the Thailand-Myanmar border â a mixed methods study
- Author
-
Salisbury, Patricia, Hall, Layla, Kulkus, Sibylla, Paw, Moo, Tun, Nay, Aung Min, Kesinee Chotivanich, Somjet Srikanok, Pranee Ontuwong, Supachai Sirinonthachai, FrançOis Nosten, Somerset, Shawn, and McGready, Rose
- Subjects
body regions ,nervous system ,fungi - Abstract
Contraceptive uptake in Maela Camp 2013 to 2015. (PDF 214 kb)
- Published
- 2016
- Full Text
- View/download PDF
30. Additional file 3: Table S1. of Family planning knowledge, attitudes and practices in refugee and migrant pregnant and post-partum women on the Thailand-Myanmar border â a mixed methods study
- Author
-
Salisbury, Patricia, Hall, Layla, Kulkus, Sibylla, Paw, Moo, Tun, Nay, Aung Min, Kesinee Chotivanich, Somjet Srikanok, Pranee Ontuwong, Supachai Sirinonthachai, FrançOis Nosten, Somerset, Shawn, and McGready, Rose
- Subjects
body regions ,nervous system ,fungi - Abstract
Contraceptive uptake in Maela Camp 2013 to 2015. (PDF 214 kb)
- Published
- 2016
- Full Text
- View/download PDF
31. Additional file 2: of Family planning knowledge, attitudes and practices in refugee and migrant pregnant and post-partum women on the Thailand-Myanmar border â a mixed methods study
- Author
-
Salisbury, Patricia, Hall, Layla, Kulkus, Sibylla, Paw, Moo, Tun, Nay, Aung Min, Kesinee Chotivanich, Somjet Srikanok, Pranee Ontuwong, Supachai Sirinonthachai, FrançOis Nosten, Somerset, Shawn, and McGready, Rose
- Abstract
Focus group discussion. (PDF 192 kb)
- Published
- 2016
- Full Text
- View/download PDF
32. Additional file 1: of Family planning knowledge, attitudes and practices in refugee and migrant pregnant and post-partum women on the Thailand-Myanmar border â a mixed methods study
- Author
-
Salisbury, Patricia, Hall, Layla, Kulkus, Sibylla, Paw, Moo, Tun, Nay, Aung Min, Kesinee Chotivanich, Somjet Srikanok, Pranee Ontuwong, Supachai Sirinonthachai, FrançOis Nosten, Somerset, Shawn, and McGready, Rose
- Abstract
Cross sectional survey questions. (PDF 209 kb)
- Published
- 2016
- Full Text
- View/download PDF
33. Two remnant populations of the roofed turtle Kachuga trivittata in the upper Ayeyarwady River system, Myanmar
- Author
-
Gerald Kuchling, Win Ko Ko, Sein Aung Min, Tint Lwin, Khin Myo Myo, Thin Thin Khaing (1), Thin Thin Khaing (2), Win Win Mar, and Ni Ni Win
- Subjects
education.field_of_study ,Range (biology) ,Ecology ,Population ,law.invention ,Fishery ,Overexploitation ,Geography ,Kachuga trivittata ,law ,Human settlement ,Conservation status ,Turtle (robot) ,education ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation - Abstract
The endemic roofed turtle Kachuga trivittata has been extirpated over most of its former range in the Ayeyarwady River system of Myanmar. Only two small remnant populations are known to survive. In a small stretch of the upper Chindwin River K. trivittata persists because local Shan villages traditionally ban the killing of large adult K. trivittata. The population has nevertheless declined dramatically during the last few years because of the erosion of the ban by migrant fishermen from central Myanmar who do not observe the local regulation, and because of the overexploitation of eggs. The traditional regulation of the Shan villages offers a basis, through its reinforcement and education of migrants, for a species recovery programme. Further actions will include the protection of nests and eggs, and eventually the banning of camps and seasonal settlements on sandbanks used by K. trivittata for nesting. K. trivittata also still persists in the Dokhtawady River in a small area subjected to low exploitation pressure in the recent past because of the dangers of a frontline between the government army and an army of insurgents. The opening of this area following a truce brought this population close to extinction and a hydroelectric dam under construction will alter the ecology of this stretch of river. We propose to assess the potential use of the future impoundment lake for the recovery of this K. trivittata population.
- Published
- 2006
34. Successful History of Cementing and Zonal Isolation in Thailand's High Temperature Offshore Wells
- Author
-
Andreas Brandl, Aung Min Thein, Guillaume Fauchille, Vincentius Valentino, Nemesio Navarro Rivera, Khamawat Siritheerasas, and Rick Stanley
- Subjects
Engineering ,Isolation (health care) ,business.industry ,Submarine pipeline ,business ,Civil engineering - Abstract
The Gulf of Thailand is characterized by shallow-water depth wells with bottomhole static temperature ranging from 240 to more than 420°F. These wells are drilled to an average of 12,000 ft MD and 9,000 ft TVD with a fast paced-batch drilling strategy. Most cement jobs are done offline, and on the surface section can be as frequent as 6 jobs per day. With multiple rigs, operators can require more than 100 cementing operations per month and cement volumes as high as 18,000 bbl. This efficient operations environment creates a demand for a logistically and operationally simple cement system that can be applied in all well sections and across the full range of expected temperatures. An advanced, lightweight seawater-based cementing concept was tested for this application. This new cementing system uses a single blend with only 3 to 4 primary liquid additives (including a stable, high-temperature, multi-functional polymer) to adjust all primary cement jobs for the entire wellbore. A sophisticated lab testing program was conducted for the innovative cementing concept according to the required demands on cement slurry design given the harsh wellbore conditions in the Gulf of Thailand. Tests revealed that the developed cementing systems meet all well requirements despite low densities of 13.3 to 14.0 ppg with high water content. This advanced cementing system was introduced in 2011 and has gradually been used on all wells since then – to date more than 500 wells in the Gulf of Thailand. In addition to improving logistics, use of the system has enhanced cement bond quality in production tubing cementing jobs. This improvement also reduced pay at risk due to insufficient cement isolation. This is evident in the whole range of well temperatures.
- Published
- 2014
35. ADAPTIVE NOISE CANCELLATION USING DYNAMIC FUZZY NEURAL NETWORKS ALGORITHM
- Author
-
Aung Min Sia and Meng Joo Er
- Subjects
Noise ,Fuzzy neural ,Salient ,Computer science ,Structure (category theory) ,Least squares ,Algorithm ,Active noise control - Abstract
In this paper, Adaptive Noise Cancellation using Dynamic Fuzzy Neural Networks (D-FNN) algorithm is attempted. The D-FNN algorithm is a hierarchical online self-learning algorithm based on Extended Radial Basis Function Neural Networks. The salient features of the algorithm are: (1) It provides an efficient learning method; (2) The weights are modified by the Recursive Least Square method; (3) No iteration is needed. Simulation studies and comparisons with other algorithms show that the D-FNN algorithm is superior in terms of simplicity of structure, learning efficiency and performance in canceling noise adaptively.
- Published
- 2002
36. Gulf of Thailand Case Study: Improving Zonal Isolation with an Advanced yet Simplified Cementing System
- Author
-
Rick Stanley, Vincentius Valentino, Guillaume Fauchille, Nemesio Navarro Rivera, Aung Min Thein, Khamawat Siritheerasas, and Andreas Brandl
- Subjects
Engineering ,Isolation (health care) ,business.industry ,Forensic engineering ,business ,Civil engineering ,Cement bond log - Abstract
The Gulf of Thailand is characterized by shallow-water depth wells with bottomhole static temperature ranging from 240 to more than 420°F. These wells are drilled to an average of 12,000 ft MD and 9,000 ft TVD with a fast paced-batch drilling strategy. Most cement jobs are done offline, and on the surface section can be as frequent as 6 jobs per day. With multiple rigs, operators can require more than 100 cementing operations per month and cement volumes as high as 18,000 bbl. This efficient operations environment creates a demand for a logistically and operationally simple cement system that can be applied in all well sections and across the full range of expected temperatures. An advanced, lightweight seawater-based cementing concept was tested for this application. This new cementing system uses a single blend with only 3 to 4 primary liquid additives (including a stable, high-temperature, multi-functional polymer) to adjust all primary cement jobs for the entire wellbore. A sophisticated lab testing program was conducted for the innovative cementing concept according to the required demands on cement slurry design given the harsh wellbore conditions in the Gulf of Thailand. Tests revealed that the developed cementing systems meet all well requirements despite low densities of 13.3 to 14.0 ppg with high water content. This advanced cementing system was introduced in 2011 and has gradually been used on all wells since then – to date more than 500 wells in the Gulf of Thailand. In addition to improving logistics, use of the system has enhanced cement bond quality in production tubing cementing jobs. This improvement also reduced pay at risk due to insufficient cement isolation. This is evident in the whole range of well temperatures.
- Published
- 2014
37. Selenite-mediated production of superoxide radical anions in A549 cancer cells is accompanied by a selective increase in SOD1 concentration, enhanced apoptosis and Se-Cu bonding
- Author
-
Anu Shanu, Claire M. Weekley, Gloria Jeong, Farjaneh Hossain, Hugh H. Harris, Paul K. Witting, Michael E. Tierney, and Aung Min Maw
- Subjects
Anions ,Cell Survival ,Radical ,SOD1 ,Apoptosis ,Selenious Acid ,Biochemistry ,Inorganic Chemistry ,Superoxide dismutase ,chemistry.chemical_compound ,Selenium ,Structure-Activity Relationship ,Superoxides ,Tumor Cells, Cultured ,Humans ,Free-radical theory of aging ,chemistry.chemical_classification ,Reactive oxygen species ,biology ,Dose-Response Relationship, Drug ,Superoxide ,Superoxide Dismutase ,Molecular biology ,Enzyme Activation ,chemistry ,biology.protein ,Primer (molecular biology) ,Copper - Abstract
Selenite may exert its cytotoxic effects against cancer cells via the generation of reactive oxygen species (ROS). We investigated sources of, and the cellular response to, superoxide radical anion (O2 (·-)) generated in human A549 lung cancer cells after treatment with selenite. A temporal delay was observed between selenite treatment and increases in O2 (·-) production and biomarkers of apoptosis/necrosis, indicating that the reduction of selenite by the glutathione reductase/NADPH system (yielding O2 (·-)) is a minor contributor to ROS production under these conditions. By contrast, mitochondrial and NADPH oxidase O2 (·-) generation were the major contributors. Treatment with a ROS scavenger [poly(ethylene glycol)-conjugated superoxide dismutase (SOD) or sodium 4,5-dihydroxybenzene-1,3-disulfonate] 20 h after the initial selenite treatment inhibited both ROS generation and apoptosis determined at 24 h. In addition, SOD1 was selectively upregulated and its perinuclear cytoplasmic distribution was colocalised with the cellular distribution of selenium. Interestingly, messenger RNA for manganese superoxide dismutase, catalase, inducible haem oxygenase 1 and glutathione peroxidase either remained unchanged or showed a delayed response to selenite treatment. Colocalisation of Cu and Se in these cells (Weekley et al. in J. Am. Chem. Soc. 133:18272-18279, 2011) potentially results from the formation of a Cu-Se species, as indicated by Cu K-edge extended X-ray absorption fine structure spectra. Overall, SOD1 is upregulated in response to selenite-mediated ROS generation, and this likely leads to an accumulation of toxic hydrogen peroxide that is temporally related to decreased cancer cell viability. Increased expression of SOD1 gene/protein coupled with formation of a Cu-Se species may explain the colocalisation of Cu and Se observed in these cells.
- Published
- 2013
38. Adaptive noise cancellation using dynamic fuzzy neural networks (D-FNN) algorithm
- Author
-
Aung Min, Er, Meng Joo, and School of Electrical and Electronic Engineering
- Subjects
Engineering::Electrical and electronic engineering::Computer hardware, software and systems [DRNTU] - Abstract
In this thesis, Adaptive Noise Cancellation using Dynamic Fuzzy Neural Networks (D-FNN) algorithm is studied. Master of Science (Computer Control and Automation)
- Published
- 2001
39. Additional file 1: of Strategies for the prevention of perinatal hepatitis B transmission in a marginalized population on the Thailand-Myanmar border: a cost-effectiveness analysis
- Author
-
Devine, Angela, Harvey, Rebecca, Aung Min, Gilder, Mary, Paw, Moo, Kang, Joy, Watts, Isabella, Borimas Hanboonkunupakarn, FrançOis Nosten, and McGready, Rose
- Subjects
parasitic diseases ,3. Good health - Abstract
Model structure. Decision tree diagrams for hepatitis B prevetion in newborns: (A) Vaccine only (B) HBIG after RDT (C) HBIG after confirmatory test. (PDF 99Â kb)
40. Additional file 1: of Strategies for the prevention of perinatal hepatitis B transmission in a marginalized population on the Thailand-Myanmar border: a cost-effectiveness analysis
- Author
-
Devine, Angela, Harvey, Rebecca, Aung Min, Gilder, Mary, Paw, Moo, Kang, Joy, Watts, Isabella, Borimas Hanboonkunupakarn, FrançOis Nosten, and McGready, Rose
- Subjects
parasitic diseases ,3. Good health - Abstract
Model structure. Decision tree diagrams for hepatitis B prevetion in newborns: (A) Vaccine only (B) HBIG after RDT (C) HBIG after confirmatory test. (PDF 99Â kb)
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.