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Determination of Egg Shell Structure and Mineral Composition Using SEM-EDS and Identification the Possibility to Produce Fertilizer

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Journal of Materials Science and Chemical Engineering 2024年第3期12卷 21-30页

作者： Purevjav Urjintseren jargalsaikhan byambaa Department of Chemistry School of Mathematics and Natural Sciences Mongolian National University of Education Ulaanbaatar Mongolia

Throwing out egg shells without using them depreciates a vital source of calcium. As an egg shell contains twice the amount of calcium a person needs a day, it is considered as the richest source of calcium of natural origin. Egg shells have been traditionally and widely used in medicine, beauty science and food production for decades. In spite of that, there is a lack of new solutions that profoundly study mineral elements and beneficial components contained in egg shells for further usage as a product. Assuming we consume 2 eggs a day, the yearly consumption for a person is 730 eggs. As beneficial component, the egg shell structure and mineral elements, were determined in 3 types of samples (Mongolian eggs, Russian eggs, and iodized eggs) by SEM-EDS (Scanning electron microscopy with energy dispersive spectroscopy), a state-of-the-art research method. Consequently, it was established that egg shells consists of Ca (72.6% - 85.7%), Mg (2.7% - 4.5%), Si (0.3% - 0.6%), P (7.0% - 18.1%), S (0.5% - 2.0%), K (0.4% - 0.9%), I (2.6% - 3.0%), respectively. Additionally, the D3.8 × 120, 250, 500, and 1000 times zoomed images of shell structure (SEM) of each sample were examined, and the results were compared and evaluated. The reverse titration method examination has demonstrated that the calcium carbonate (CaCO3) content in egg shells is 91% - 92.5%, and pH is 8.41 - 8.75. Ultimately, fertilizer containing 97.7% Ca without chemical additives has been extracted by grounding the eggshells to 4.4 μm, then preparing the mixture at the rate of 20:0.5 (shell: mix, enriched with mandarin and lemon peel) and adjusting its pH to 7.5 - 8.0. Further research on the impact of fertilizer on growing process of indoor flowers has been commenced.

关键词： SEM-EDS Analysis Calcium Carbonate Organic Fertilizer

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Particle morphology control for spherical powder fabrication using the ball milling process with DEM simulation

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Particuology 2024年第7期90卷 41-50页

作者： Battsetseg jargalsaikhan Khulan Uranchimeg Amgalan Bor Kyung Sung Kim Heekyu Choi Research Institute of Future Convergence Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Material Science Engineering Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Department of Chemical and Biological Engineering School of Engineering and Applied SciencesNational University of MongoliaUlaanbaatar 14200Mongolia Department of Mechatronics Convergence Engineering College of Future ConvergenceChangwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Convergence on Culture Technology Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea

Characteristics of spherical particles on copper powder and changing sizes were studied in a ball mill under various experimental conditions,such as different ball diameters,high rotation speeds,and milling times,using a discrete element method(DEM)*** experiment has investigated the characteristics of spherical particle morphology evolution involved in the mechanical alloying of copper *** morphological evolution of the copper particle was analyzed using scanning electron microscopy(SEM).A spherical copper particle was shown with a roundness value using imageJ *** DEM was used to simulate the ball motion in a planetary ball mill,and the impact energy and shear energy generated during the collision were analyzed to estimate the contact number between the ball and the ball ***,as the size of the ball decreased,the number of ball-to-ball and ball-to-wall contacts increased accordingly,and the spherical shape of the copper powder changed.

关键词： Planetary ball mill DEM simulation Spherical particle morphology Copper powder Ball diameter

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Surface coating copper powder with carbon nanotubes using traditional and stirred ball mills under various experimental conditions

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Particuology 2018年第5期16卷 177-182页

作者： Amgalan Bor Battsetseg jargalsaikhan Jehyun Lee Heekyu Choi Engineering Research Center (ERf)for Integrated Mechatronics Materials and Components Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Graduate School of Material Science Engineering Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea Department of Mechanics Convergence.College of Engineering Changwon National UniversityChangwonGyoungnam 641-773Republic of Korea

We investigated the effect of the raw powder properties of carbon nanotube surface coatings on metal powder,with the goal of obtaining high-quality *** mechanical dry coating technique was used to fabricate CNT coatings (guest particles)on the surface of copper (Cu,host)particles using a traditional ball mill and a stirred ball *** coatings were produced under various experimental conditions (varying rotation speed and grinding duration,with a ball diameter of 5mm),and the effect of these conditions on the surface of the powder was *** coated surfaces were characterized using scanning electron microscopy and field emission scanning electron *** compared prolonged milling (48h)at a low rotation speed (50rpm),with a short milling period (12h)at high rotation *** found that for the TBM,successful CNT coating was achieved at 50rpm over 48h. In contrast,for the SBM,CNT coatings were obtained after a short milling period (12h)at low rotation speed (50rpm).

关键词： Nanocomposites Traditional bali mill Stirred ball mill Particle coating Carbon nanotube (CNT)

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Multi-Agent Deep Reinforcement Learning-Based Resource Allocation in HPC/AI Converged Cluster

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Computers, Materials & Continua 2022年第9期72卷 4375-4395页

作者： jargalsaikhan Narantuya Jun-Sik Shin Sun Park JongWon Kim Department of Cloud Kakao Enterprise CorpSeongnam13494Korea AI Graduate School Gwangju Institute of Science and Technology(GIST)Gwangju61005Korea

As the complexity of deep learning(DL)networks and training data grows enormously,methods that scale with computation are becoming the future of artificial intelligence(AI)*** this regard,the interplay between machine learning(ML)and high-performance computing(HPC)is an innovative paradigm to speed up the efficiency of AI research and ***,building and operating an HPC/AI converged system require broad knowledge to leverage the latest computing,networking,and storage ***,an HPC-based AI computing environment needs an appropriate resource allocation and monitoring strategy to efficiently utilize the system *** this regard,we introduce a technique for building and operating a high-performance AI-computing environment with the latest ***,an HPC/AI converged system is configured inside Gwangju Institute of Science and Technology(GIST),called GIST AI-X computing cluster,which is built by leveraging the latest Nvidia DGX servers,high-performance storage and networking devices,and various open source ***,it can be a good reference for building a small or middlesized HPC/AI converged system for research and educational *** addition,we propose a resource allocation method for DL jobs to efficiently utilize the computing resources with multi-agent deep reinforcement learning(mDRL).Through extensive simulations and experiments,we validate that the proposed mDRL algorithm can help the HPC/AI converged cluster to achieve both system utilization and power consumption *** deploying the proposed resource allocation method to the system,total job completion time is reduced by around 20%and inefficient power consumption is reduced by around 40%.

关键词： Deep learning HPC/AI converged cluster reinforcement learning

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早发性卵巢功能不全遗传因素中相关基因改变的研究进展

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生殖医学杂志 2024年第6期33卷 831-836页

作者：王云迪吉日嘎拉赛罕巴达日其王煜内蒙古医科大学第一临床医学院呼和浩特010050 蒙古国立医科大学医学院妇产科学系乌兰巴托817199 内蒙古医科大学附属医院生殖医学中心呼和浩特010050

早发性卵巢功能不全(POI)是指女性在40岁之前出现月经及激素水平异常等现象。近年来,POI的发病率出现逐年提高的趋势,引起国内外学者的强烈关注。随着全外显子测序、全基因组测序等技术的发展,不同的POI候选基因及致病基因被发现,越来... 详细信息

早发性卵巢功能不全(POI)是指女性在40岁之前出现月经及激素水平异常等现象。近年来,POI的发病率出现逐年提高的趋势,引起国内外学者的强烈关注。随着全外显子测序、全基因组测序等技术的发展,不同的POI候选基因及致病基因被发现,越来越多的研究证实基因突变参与POI的病理生理过程,大大增加了人们对其遗传学病因的认识。本文从DNA损伤修复和同源重组相关基因、转录因子相关基因及卵巢功能相关基因三个方面综述了POI相关基因改变及其分子机制的最新进展,以期进一步明确其发病机制的多样性,为POI的遗传学筛查和治疗提供新的思路。

关键词：早发性卵巢功能不全基因突变病因

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“一带一路”背景下中蒙公路口岸物流效率评价与发展策略研究

“一带一路”背景下中蒙公路口岸物流效率评价与发展策略研究

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作者： Munkhtuul jargalsaikhan 东北林业大学

学位级别：硕士

蒙古国作为中国北部重要邻国及“一带一路”倡议沿线的重要节点国家,近年来,受两国以公路运输为主的双边贸易规模扩大及发展合作进程加快等影响,边境口岸物流产业的建设问题引起广泛关注。研究中蒙公路口岸的物流效率有利于中蒙口岸的... 详细信息

蒙古国作为中国北部重要邻国及“一带一路”倡议沿线的重要节点国家,近年来,受两国以公路运输为主的双边贸易规模扩大及发展合作进程加快等影响,边境口岸物流产业的建设问题引起广泛关注。研究中蒙公路口岸的物流效率有利于中蒙口岸的基础设施建设,提高物流产业的服务水平以及满足进出口贸易的高需求。首先,根据口岸和口岸物流的理论基础,确定以16个中蒙公路口岸为研究对象(4个口岸位于新疆维吾尔自治区,12个口岸位于内蒙古自治区);阐述经济学中“效率”的概念以及效率测量的方法,通过对比和分析参数法和非参数法的优劣势,确定以数据包络分析法(DEA)和Malmquist指数法为基础,规模报酬可变且以投入为导向的前提下,将BCC-DEA、双边DEA、Malmquist指数法进行融合嵌套,构建VRS-Mal新模型,更有针对性地评价中蒙公路口岸的物流效率。其次,确定口岸物流效率的影响因素和投入产出指标选取原则。在“一带一路”的大背景下,结合中蒙公路口岸的实际情况并考虑到数据的可得性,选取2013-2018年的中蒙公路口岸年度进出口货运总量、进出口总额及客运人次为产出指标,口岸载体城市的物流从业人员和财政资金投入为投入指标;使用VRS-Mal方法对2013-2018年的16个中蒙公路口岸数据进行静态、双向差异和动态分析。结果表明中蒙公路口岸整体物流效率较高,但新疆地区水平较为薄弱,技术应用的缓慢是导致物流效率较低的重要因素,且不同级别的口岸物流效率差异显著。最后,根据分析结果找出影响发展的因素,提出“一带一路”背景下中蒙公路口岸物流发展策略,如深化地区合作、推动技术应用创新及结合地区优势制定具有指向性的政策法规等相关建议。

关键词：一带一路口岸物流效率评价 VRS-Mal模型

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Determination of Trace Elements in the Tamsagbulag and Tagaan Els crude oils and Their Distillation Fractions Using by ICP-OES

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Advances in Chemical Engineering and Science 2012年第1期2卷 113-117页

作者： jargalsaikhan Sainbayar Dalantai Monkhoobor Budeebazar Avid 不详

Thirty one trace elements were determined in the petroleum and its fractions of 250℃ - 350℃, 350℃ - 450℃ and up 450℃ by inductively coupled plasma optical emission spectrometry. Such analyses are important for technical diagnostics as well as specific sample characteristics. The sample preparation together with an efficient sample introduction allowed a fast quantification of the analytes using calibration curves prepared with analyte organic standards. Trace element occurrences, forms, distributions are examined as well as their implications in terms of reservoir geochemistry, oil refining and environment.

关键词： Trace Elements Petroleum ICP-EOS Fractionation Tertiary Period Mesozoi

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基于DEA-Malmquist的中蒙公路口岸物流效率分析

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重庆理工大学学报（自然科学） 2021年第4期35卷 224-230页

作者：邓红星 Munkhtuul jargalsaikhan 刘敏东北林业大学交通学院哈尔滨150040 大连理工大学交通运输学院辽宁大连116024

以中蒙公路口岸为研究对象,构建中蒙公路口岸物流效率的投入产出指标体系,为避免单一地区口岸研究的片面性,结合BCC-DEA、双边DEA及Malmquist指数法对2013—2018年的16个中蒙公路口岸数据进行静态、双向差异和动态分析。结果表明:中蒙... 详细信息

以中蒙公路口岸为研究对象,构建中蒙公路口岸物流效率的投入产出指标体系,为避免单一地区口岸研究的片面性,结合BCC-DEA、双边DEA及Malmquist指数法对2013—2018年的16个中蒙公路口岸数据进行静态、双向差异和动态分析。结果表明:中蒙公路口岸整体物流效率较高,但新疆地区水平较为薄弱,技术应用的缓慢是导致物流效率较低的重要因素,且不同级别的口岸物流效率差异显著。对此,提出深化地区合作、推动技术应用创新及结合地区优势制定具有指向性的政策法规等相关建议。

关键词：中蒙口岸物流效率双边DEA 地区差异

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Surveillance of Antibiotic Resistant Staphylococcus aureus in Agricultural Production Chain of Mongolia

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Journal of Agricultural Science and Technology(B) 2015年第10期5卷 701-713页

作者： Tumuruu Gantsetseg jargalsaikhan Enkhtuya[ Tundev Odgerel Ochirpurev Ariuntuya Sodnom Lkhagvasuren Institute of Veterinary Medicine Ulaanbaatar 17024 P.O. Box 53/24 Mongolia National Center for Communicable Disease Ulaanbaatar 17024 P.O. Box 53/24 Mongolia WHO Representative Office in Mongolia Ulaanbaatar P.O. Box 46/78 Mongolia

Monitoring of food borne pathogens in food is the primary tool for the implementation of food safety systems. It is necessary to monitor the prevalence of food borne pathogens for effective food safety planning and targeted interventions. Staphylococcus aureus is considered as the third largest cause of food related illness in worldwide. The present study aimed at surveillance of S. aureus contamination of meat on meat supply chain stages, which is a common benchmark of meat market in Mongolia, and characterization of isolated and collected strains from other agricultural sources. The cultural and polymerase chain reaction （PCR） methods were used for isolation, identification and characterization of S. aureus. In 216 cultures of S. aureus among 634 Staphylococci isolates obtained from different sources throughout the agricultural production chain in this study, common gene for S. aureus （98.74%）, and nuc （97.47%）, mecA （44.12%）, msrA （9.66%）, gyrA （32.77%） and ermC （29.41%） genes were identified. As seen in the surveillance result, the prevalence of methicillin-resistance S. aureus （MRSA） is 44% among S. aureus isolates from agricultural production chain. Confirmed cases of food-borne infections and intoxications caused by S. aureus should be considered as one of mean criteria of food safety issues in Mongolia, and special attentions should be paid on antibiotic resistant bacteria, such as S. aureus.

关键词： Meat supply chain mecA positive Staphylococcus aureus polymerase chain reaction.

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蒙古国经济转型的研究

蒙古国经济转型的研究

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作者：舒莉（Munkhshur jargalsaikhan）延边大学

学位级别：硕士

蒙古国作为一个内陆国家,苏联解体后期望将本国经济与国际市场接轨,尤其是在东北亚区域经济合作关系当中,通过发挥自身的资源优势,开展东北亚各国之间的互补性合作和交流,从而为其经济振兴注入强劲的动力。为了东北亚区域合作开发,蒙古... 详细信息

蒙古国作为一个内陆国家,苏联解体后期望将本国经济与国际市场接轨,尤其是在东北亚区域经济合作关系当中,通过发挥自身的资源优势,开展东北亚各国之间的互补性合作和交流,从而为其经济振兴注入强劲的动力。为了东北亚区域合作开发,蒙古国采取了积极参与的政策方针。自上世纪九十年代以来,在矿产资源开发、交通建设、跨境旅游、环境保护等方面与其他国家的合作取得了一定的进展。虽然受一些本地区缺乏多边合作制约因素的限制,存在一定的问题,但合作基础慢慢成熟。近几年,东北亚地区良好的经济发展态势促进了蒙古国与东北亚国家的经贸合作和文化交流。蒙古国政府希望在东北亚多边合作机制中不断地提升本国的地位,以增强自己的综合国力和国际地位。在过去的二十年中,有越来越多的机构和专家致力于研究前苏联的经济转型。而曾经与苏联有着密切联系的蒙古国的经济转型过程,在很大程度上被世人所忽视。本文通过研究蒙古经济转型过程,试图填补这一领域的空白。第一部分介绍了研究背景和意义以及国内外关于经济转型的研究状况。第二部分对经济转型的相关理论进行概述,为蒙古国经济转型奠定理论基础。第三部分通过研究前苏联的经济转型,为蒙古国的经济转型提供参考依据。第四部分在研究蒙古国经济转型的历史变迁的基础上,探讨蒙古国经济转型的现状,进而提出蒙古国经济转型中存在的问题。第五部分在上述研究的基础上,提出促进蒙古国经济转型的对策建议。

关键词：蒙古国经济管理体制经济转型

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