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Observed characteristics of flow,water mass,and turbulent mixing in the Preparis Channel

Acta Oceanologica Sinica 2023年第2期42卷 83-93页

作者： Ruijie Ye Feng Zhou Xiao Ma Dingyong Zeng Feilong Lin Hongliang Li Chenggang Liu soe moe lwin Hlaing Swe Win soe Pyae Aung State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai200030China Geology Department Dagon UniversityYangon11422Myanmar National Analytical Laboratory Department of Research Innovation Ministry of EducationYangon11061Myanmar Port and Harbour Engineering Department Myanmar Maritime UniversityYangon11293Myanmar

Preparis Channel is the very important exchange path of energy and materials between the northern Bay of Bengal and Andaman Sea(AS).A set of hydrographic measurements,a microstructure profiler,and a deep mooring were used to determine the characteristics of water masses,turbulent mixing,and flows in the Preparis *** unprecedented short-term mooring data reveal that a deep current in the deep narrow passage(below 400 m)of the Preparis Channel flows toward the Bay of Bengal(BoB)with a mean along-stream velocity of 25.26 cm/s at depth of 540 m;above the deep current,there are a relatively weak current flows toward the AS with a mean along-stream velocity of 15.46 cm/s between 500 m and 520 m,and another weak current flows toward the BoB between 430 m and 500 ***,a sandwiched vertical structure of deep currents(below 400 m)is present in the Preparis *** volume transport below 400 m is 0.06 Sv(1 Sv=106 m^(3)/s)from the AS to the *** the upper layer(shallower than 300 m),the sea water of the AS is relatively warmer and fresher than that in the BoB,indicating a strong exchange through the *** profiler observations reveal that the turbulent diffusivity in the upper layer of the Preparis Channel reaches O(10−4 m^(2)/s),one order larger than that in the interior of the BoB and over the continental slope of the northern *** speculate that energetic high-mode internal tides in the Preparis Channel contribute to elevated turbulent *** addition,a local“hotspot”of turbidity is identified at the deep mooring site,at depth of about 100 m,which corresponds to the location of elevated turbulent mixing in the Preparis Channel.

关键词： deep flow turbulent mixing water mass Preparis Channel

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Epipelagic mesozooplankton communities in the northeastern Indian Ocean off Myanmar during the winter monsoon

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Acta Oceanologica Sinica 2023年第6期42卷 57-69页

作者： Ping Du Dingyong Zeng Feilong Lin Sanda Naing Zhibing Jiang Jingjing Zhang Di Tian Qinghe Liu Yuanli Zhu soe moe lwin Wenqi Ye Chenggang Liu Lu Shou Feng Zhou Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Port and Harbour Engineering Department Myanmar Maritime UniversityYangon 11293Myanmar Geology Department Dagon UniversityYangon 11422Myanmar

The northern Andaman Sea off Myanmar is one of the relatively high productive regions in the Indian *** abundance,biomass and species composition of mesozooplankton and their relationships with environmental variables in the epipelagic zone(~200 m)were studied for the first time during the Sino-Myanmar joint cruise(February 2020).The mean abundance and biomass of mesozooplankton were(1916.7±1192.9)ind./m3and(17.8±7.9)mg/m3,respectively.A total of 213 species(taxa)were identified from all *** omnivorous Cyclopoida Oncaea venusta and Oithona *** the top two dominant *** mesozooplankton communities were determined via cluster analysis:the open ocean in the Andaman Sea and the Bay of Bengal(Group A),the transition zone across the Preparis Channel(Group B),and nearshore water off the Ayeyarwady Delta and along the Tanintharyi Coast(Group C).Variation partitioning analysis revealed that the interaction of physical and biological factors explained 98.8%of mesozooplankton community spatial variation,and redundancy analysis revealed that column mean chlorophyll a concentration(CMCHLA)was the most important explanatory variable(43.1%).The abundance and biomass were significantly higher in Group C,the same as CMCHLA and column mean temperature(CMT)and in contrast to salinity,and CMT was the dominant *** taxon spatial variations were controlled by CMCHLA,salinity and *** study suggested that mesozooplankton spatial variation was mainly regulated by physical processes through their effects on *** physical processes were simultaneously affected by heat loss differences,freshwater influx,eddies and depth.

关键词： mesozooplankton Myanmar epipelagic zone physical processes water column mean chlorophyll a

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Participation of private general practitioners in disease management of malaria in Myanmar

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Asian Pacific Journal of Tropical Medicine 2009年第5期2卷 71-76页

作者： Thein Tun Zaw Win Tun Hla soe Tint Khin Lin Thar Tun Kyaw moe Kyaw Myint Department of Medical Research(Upper Myanmar) AnisakhanPyin Oo Lwin 05062Mandalay DivisionMyanmar VBDC Divisional Office 35th StreetMandalayMyanmar

Objective:Myanmar has been trying to improve the disease management of malaria through public health services. The involvement of private general practitioners(GPs) is recognized as one of the key contributory issues in malaria control,but no one has yet made an attempt to study the efficiency of their *** study aimed to assess the participation of GPs in improvement of disease ***:The study was conducted with all 32 GPs practicing at three randomly selected townships with high malaria load situated in Upper Myanmar from June 2006 to March 2007 using a pretest-posttest design to assess their knowledge of the disease management prior to and after *** intervention package consisted of a one-day workshop on diagnosis and treatment of malaria and the supply of facilities for *** filled in before and after tests were compared to assess the change of knowledge after the *** and treatment practice during the study period was analysed by review of registers kept by GPs,together with a follow-up survey of their patients for the reliability of ***:An overall improvement of knowledge was observed and significant changes were apparent for three variables:the criteria for referral of severe malaria,the effect of incomplete treatment and recommended treatment of Plasmodium ***-test results showed that only 65.6%of GPs perceived microscopy or Rapid Diagnostic Test kits(RDTs) for confirmation of malaria necessary,while only 15.6%and 40.6%of the GPs knew the recommended treatments of falciparum and vivax malaria,respectively. However,after intervention 92%of the patients were diagnosed as malaria by RDTs and 3%by microscopy throughout the *** GPs prescribed artemisinin-based combination therapy(ACTs) to 95%of confirmed falciparum cases and treated 82.4%of RDT confirmed falciparum negatives with chloroquine and *** with our study,an international NGO,Population Service In

关键词： Malaria Myanmar Private health services Disease management Private general practitioners

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Postvaccination breakthrough SARS-CoV-2 infections among adults in Malaysia and attitudes towards future vaccination

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Asian Pacific Journal of Tropical Medicine 2023年第7期16卷 296-304页

作者： Praneetha Kumar Nair Kai Ern Koh Christine Yvonne Bede Lee Ai Ren Natasha Mevuni Dinethma Mahanama Thin Mon Kyaw Htoo Htoo Kyaw soe soe moe Kazi Majidur Rahaman Mila Nu Nu Htay Faculty of Medicine Manipal University College MalaysiaMalaysia Department of Community Medicine Faculty of MedicineManipal University College MalaysiaMalaysia Department of Medicine Faculty of MedicineManipal University College MalaysiaMalaysia

Objective:To determine the frequency and severity of the breakthrough infections and the associated factors in ***:This cross-sectional study was conducted among the adult general population in Malaysia who completed at least one dose of *** validated online questionnaires were used for data collection between December 2022 to February *** participants were recruited by a convenient sampling *** data were analysed by descriptive statistics,and logistic regression by using SPSS(Version 27).Qualitative data from open-ended questions were analysed as thematic analysis by using RQDA ***:A total of 524 participants'data were analyzed and 77.5%of them completed three doses of COVID-19 *** infections after vaccination were reported in 57.3%of the *** group of 18 and 30 years(aOR 2.32,95%CI 1.01-5.32)and other ethnicities(aOR 2.00,95%CI 1.02-3.93)significantly associated with the occurrence of breakthrough infections.A total of 35.5%of the participants were not willing to take another booster dose in the future because of their attitudes towards fear of long-term side effects,lack of trust to the vaccine,less susceptibility to severe infection,belief in natural immunity,and ***:Future public health policies and interventions should be focused on disseminating the information about safety of booster doses of vaccine,management and re-assurance of side effects,and targeted vaccination to the working(younger age group)and ethnic minorities.

关键词： COVID-19 SARS CoV-2 Breakthrough infection Vaccine Malaysia

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Urbanization,economic development,and environmental changes in transitional economies in the global south:a case of Yangon

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Ecological Processes 2022年第1期11卷 929-945页

作者： Peilei Fan Jiquan Chen Cadi Fung Zaw Naing Zutao Ouyang Khaing moe Nyunt Zin Nwe Myint Jiaguo Qi Joseph P.Messina soe W.Myint Brad G.Peter School of Planning Designand Construction and Center for Global Change and Earth ObservationsMichigan State UniversityEast LansingMI 48824USA Department of Geography Environmentand Spatial Sciences and Center for Global Change and Earth ObservationsMichigan State UniversityEast LansingMI 48824USA Department of Geography University of AlabamaTuscaloosaAL 35487USA Mandalay Technology YangonMyanmar Earth System Science Stanford UniversityStanfordCA 94305USA Yangon City Development Committee YangonMyanmar Yangon University YangonMyanmar College of Arts and Sciences University of AlabamaTuscaloosaAL 35487USA School of Geographical Sciences and Urban Planning Arizona State UniversityTempeAZ 85287-5302USA Department of Geosciences University of ArkansasFayettevilleAR 72701PUSA

Background:Transitional economies in Southeast Asia—a distinct group of developing countries—have experienced rapid urbanization in the past several decades due to the economic transition that fundamentally changed the function of their economies,societies and the ***,one of the least developed transitional economies in Southeast Asia,increased urbanization substantially from 25%in 1990 to 31%in ***,major knowledge gaps exist in understanding the changes in urban land use and land cover and environment and their drivers in its ***:We studied Yangon,the largest city in Myanmar,for the urbanization,environmental changes,and the underlying driving forces in a radically transitioned economy in the developing *** on satellite imagery and historic land use maps,we quantified the expansion of urban built-up land and constructed the land conversion matrix from 1990 through *** also used three air pollutants to illustrate the changes in environmental *** analyzed the coupled dynamics among urbanization,economic development,and environmental *** conducting a workshop with 20 local experts,we further analyzed the influence of human systems and natural systems on Yangon’s urbanization and ***:The city of Yangon expanded urban built-up land rapidly from 1990 to 2000,slowed down from 2000 to 2010,but gained momentum again from 2010 to 2020,with most newly added urban built-up land appearing to be converted from farmland and green land in both 1990–2000 and 2010–***,the air pollutant concen-tration of CO decreased,but that of NO_(2)and PM_(2.5)increased in recent years.A positive correlation exists between population and economic development and the concentration of PM_(2.5)is highly associated with population,the economy,and the number of ***,the expert panel also identified other potential drivers for urbanization,including the extreme climate event of Cyclone Nargi

关键词： Urbanization Economic development Environmental change Transitional economy Globalization Extreme climate event Capital relocation Myanmar

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Phylogenetic Diversity and Evaluation the Effectiveness of Indigenous <i>Bradyrhizobium</i>Strains for Myanmar Black Gram (<i>Vigna mungo</i>L. Hepper) Cultivars

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American Journal of Plant Sciences 2020年第2期11卷 285-306页

作者： Khin Myat soe Aung Zaw Htwe Kyi moe Tomomi Abiko Takeo Yamakawa Biofertilizer Laboratory Land Use Division Department of Agriculture Ministry of Agriculture Livestock and Irrigation Yangon Myanmar Department of Agronomy Yezin Agricultural University Yezin Myanmar Laboratory of Agroecology Department of Bioresource Sciences Faculty of Agriculture Kyushu University Harumachi Kasuya-Machi Kasuya-Gun Fukuoka Japan Laboratory of Plant Nutrition Department of Bioresource and Bioenvironmental Sciences Faculty of Agriculture Kyushu University Motooka Nishi-Ku Fukuoka Japan

Black gram (Vigna mungo L. Hepper) is one of the main leguminous crops that provide chief source of food. Several Bradyrhizobium species are able to induce effective nodules in black gram cultivars. In the present study, we characterized forty isolates of indigenous black gram bradyrhizobia from Myanmar based on the sequence analysis of the bacterial 16S rRNA gene. The sequence analysis confirmed that all isolates were categorized and identified as the genus Bradyrhizobium and they were conspecific with B. elkanii, B. sp., B. liaoningense, B. japonicum and B. yunamingense. Almost all the collected isolates from major black gram growing regions of Nyaunglebin Bago Regio, Chaungzon Mon State, Sittwe Rakhine State, Danubyu Ayeyarwady Region and Launglon Tanintharyi Region were identified as B. liaoningense. At Danubyu Ayeyarwady Region and Pyinmanar Nay Pyi Taw Region, most of the strains were identified as B. japonicum. On the other hand, more or less all the isolates from Launglon Tanintharyi Region and Hpa-an Kayin State were related to B. elkanii. However, all B. sp. strains were found in Salingyi Sagaing Region black gram growing region. This is the first report describing Bradyrhizobium strains that were isolated from soil samples of major black gram growing areas in Myanmar. Evaluation of the effectiveness of Myanmar Bradyrhizobim strains isolated from soil samples of major black gram growing areas of Myanmar for plant growth and nitrogen fixation was studied in pot experiments with completely randomized design and three replicates. The nodule dry weight, shoot dry weight and acetylene reduction activity of the plant inoculated with Bradyrhizobium elkanii LauBG38 were significantly higher in ARA per plant, nodule and shoot dry weights than the other tested isolates in both Yezin-4 and Yezin-7 black gram varieties. We expect that Myanmar Bradyrhizobium elkanii LauBG38 will be able to use as Biofertilizer for black gram cultivars.

关键词： Black Gram Myanmar 16S rRNA Gene Bradyrhizobium Nitrogen Fixation

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