Agricultural efficiency of rice farmers in Myanmar : a case study in selected areas

This paper try to analyze unique data set for rice producing agricultural households in some selected areas of Bago and Yangon divisions to examine the households' profit efficiency and the relationship between farm and household attributes and profit inefficiency using a Cobb-Douglas production frontier function. The frequency distribution reveals that the mean technical inefficiency is 0.1627 with a minimum of 3 percent and maximum of 73 percent which indicates that, on average, about 16% of potential maximum output is lost owing to technical inefficiency in both studied areas. While 85% of the sample farms exhibit profit inefficiency of 20% or less, about 40% of the sample farms is found to exhibit technical inefficiency of 20% or less, indicating that among the sample farms technical inefficiency is much lower than profit inefficiency.Myanmar, Rice, Farmers, Agricultural economies, Household, Efficiency, Production frontier function

Agricultural efficiency of rice farmers in Myanmar : a case study in selected areas

This paper try to analyze unique data set for rice producing agricultural households in some selected areas of Bago and Yangon divisions to examine the households\u27 profit efficiency and the relationship between farm and household attributes and profit inefficiency using a Cobb-Douglas production frontier function. The frequency distribution reveals that the mean technical inefficiency is 0.1627 with a minimum of 3 percent and maximum of 73 percent which indicates that, on average, about 16% of potential maximum output is lost owing to technical inefficiency in both studied areas. While 85% of the sample farms exhibit profit inefficiency of 20% or less, about 40% of the sample farms is found to exhibit technical inefficiency of 20% or less, indicating that among the sample farms technical inefficiency is much lower than profit inefficiency

Образование иерархических структур из функционализированных многостенных углеродных нанотрубок в растворе с аэросилом

The features and  regularities of self−assembly and  self− organization processes in the diffusion−limited conditions (method of drops) of aqueous (deionized water) colloidal solutions of multi−walled carbon nanotubes with aerosil under the influence of constant electric fields with a value varying of direct  current voltage  from 15 to 25 V have been studied. During droplet evaporation in an electric field, the processes of hierarchical structuring have been studied and the formation of linear piecewise with the sizes of 40—120 nm, fractal structures 25—45 nm and  diffusion structures 250 nm from MWCNT — COOH + aerosil  + H2ODI  have  been observed. These structures have  been analyzed by methods of confocal microscopy, X−ray powder diffraction, Raman scattering, atomic force microscopy, FT−IR spectroscopy and scanning electron microscopy. The size of micro− and nanostructures in hyperbolic dependence of d = 1/U in the  approximation d → 2R, and their growth rate  increases as U2 have been observed. Intensive ultrasonic dispersion proves to produce a centrally−axial arrangement located SWCNT after ultrasonic dispersing of functionalized MWCNT — COOH + aerosil  + H2ODI colloidal solution, as confirmed by excitation of Raman lines in the low−wavelength region, the so−called breathing mode, resulting in the existence of mixed types sp2−hybridization with π− and σ−carbon bonds, as well as metallic and semiconducting conductivity, which indicates great practical importance of this structuring for the development of nanoelectronics. Изучены особенности и закономерности процессов самосборки и самоорганизации в диффузионно−ограниченных условиях (методом из капли) водных (деионизированная вода)  коллоидных растворов многостенных углеродных нанотрубок (МУНТ) с аэросилом под воздействием постоянных электрических полей, варьируемых по величине от 15 до 25 В. В ходе испарения капли в однородном электрическом поле изучены процессы иерархического структурирования и обнаружено формирование линейно−кусочных образований размером 40—120 нм, фрактальных структур — 25—45 нм, а также диффузных структур — 250 нм из «МУНТ — COOH + аэросил + H2Oд.в». Проведены исследования структур методами конфокальной микроскопии, рентгеновской дифрактометрии, спектроскопии комбинационного рассеяния, атомно−силовой микроскопии, ИК−спектроскопии и сканирующей электронной микроскопии. Установлено,  что размеры наблюдаемых микро− и наноструктур уменьшаются по гиперболической зависимости d = 1/U в приближении d  → 2R, а скорость их роста возрастает как U2. Доказано, что интенсивное ультразвуковое диспергирование функционализированных «МУНТ — COOH + аэросил + H2Oд.в» в коллоидном растворе вызывает появление внутри одностенных углеродных нанотрубок с центрально−осевым расположением так называемых дыхательных мод. Это подтверждается возбуждением линий КРС в коротковолновой области, и обусловливает как существование смешанных типов sp2−гибридизации с π− и σ−углеродными связями, так и металлической и полупроводниковой проводимостей, что указывает на большое практическое значение такого структурирования для развития наноэлектроники

Aerobic granulation : an innovative biotechnology for high performance wastewater treatment

Biogranulation is one of the most effective biological wastewater treatment processes. Biogranulation under aerobic condition is a relatively new technology and little is known about its mechanisms and biological functions. This study reviews the properties and advantages of aerobic granules.Master of Science (Environmental Engineering

An Analysis of the Structure of Myanmar's Exports and Its Implications for Economic Development

報告番号: 甲25401 ; 学位授与年月日: 2009-11-06 ; 学位の種別: 課程博士 ; 学位の種類: 博士(農学) ; 学位記番号: 博農第3483号 ; 研究科・専攻: 農学生命科学研究科農業・資源経済学専

ミャンマーの輸出構造とその経済発展への含意に関する分析

University of Tokyo (東京大学

Avifauna of the Southeastern Himalayan Mountains and neighboring Myanmar hill country

The northern Myanmar hill jungle and neighboring highlands found along the southeastern slopes of the Himalayas (Hkakabo Razi region, northern Kachin State, northernmost Myanmar) is almost untouched by humans, and can be considered as primary forest in the literal sense. Until the efforts reported on in this monograph, no ornithologist had the opportunity to visit this remote area since the late 1940s. Beginning in 1997, we made several visits to this extraordinary, species-rich area, and compiled an inventory of the regional avifauna while also studying the ecology, behavior, systematics, taxonomy, biogeography, and origin of the region’s birds. We report on these aspects for the 441 species found in the area and add data on species new to the area and those for which there are only a few representatives in the world’s specimen collections. In addition, we provide information on taxa that are likely endemic (Jabouilleia naungmungensis), suggest splits or revisions of subspecies and species, and describe two new subspecies from the area, Alcippe cinereiceps hkakaboraziensis ssp. nov. and Malacocincla abbotti kachinensis ssp. nov., based on plumage and morphometric differentiation. Last but not least, we analyze the species affinities (i.e. the biogeographic origin of the species occurring in Hkakabo Razi and surrounding areas). We found a lack of data in general for bird species in Southeast Asia, India and Tibet/China, but especially in the northern hill mountains of Kachin State around Hkakabo Razi National Park. Efforts by conservation organizations and ourselves has improved the situation, but much more work, particularly on ecology and global change effects, is warranted. We have added considerable information on the distribution, systematics, ecology, and biogeography of a number of species. Although much work remains to be done, our research provides significant new insights into the biology and biogeography of the region’s birds, and in particular, on delineation of major zoogeographic regions. We conclude that Ernst Mayr was correct in essence when he stated that the eastern border between the Oriental and Southeast Asian regions is roughly equivalent to the political boundary between Myanmar (Burma) and China. However, our work provides new understanding of the reasons, and challenges some of the fundamental assumptions on which the ‘zoogeographic region’ concept is based. In particular, such delineations often fail to take into account the geological and ecological history of a region. By evaluating in detail the subspecific relationships of the Hkakabo Razi rainforest avifauna, we were able to determine that the avifauna most similar is found in the temperate rainforests of northeastern India. We conclude that the likely reason for this similarity is that these two avifaunas shared the same refugium during the maximum of the last glacial period (18,000 years ago), and that other south and southeast Asian rainforest species shared different refugia during this time period, and probably during previous glacial events as well.Other parts of this work have been funded through six SYNTEHSYS grants (visits to BMNH, NMN, NMW, ZMUC, NRM, and Museo de la Historia Natural de Madrid: ES-TAF-2501; AT-TAF-2481; GB-TAF-108, SE-TAF-1312; NL-TAF-4369, AT-TAF-7), under the European Community’s 7th Framework Program (www.synthesys.info).Peer reviewe

Nonbreeding Bird Communities Along an Urban–Rural Gradient of a Tropical City in Central Myanmar

Urbanization is known to be a major driver in abundance and species richness of birds. However, how birds respond to urbanization in tropical cities is understudied in general and entirely absent from Myanmar. We conducted a study in and around Mandalay, a large city in central Myanmar to gather first data on birds and their response to urbanization.We selected four habitats with 10 sampling points each in November 2015. We made 1,536 observations of 68 bird species. The number of species and diversity significantly differed between the four localities. Mandalay Hill and Downtown Mandalay had the lowest number of species and diversity, whereas the University Campus and Paddy Fields had the highest. The highest number of observations was in Downtown Mandalay (1,003 counts) and the lowest on Mandalay Hill (103). Nonmetric multidimensional scaling ordination techniques showed that the four habitat types had significantly different bird species composition. Our results indicate a large effect of urbanization on species diversity, species richness, and species composition of birds