Proceedings of the Mongolian Academy of Sciences最新文献_第3页

review of modern trends and historical stages of development of lake research in Mongolia 蒙古湖泊研究的现代发展趋势和历史阶段综述

Proceedings of the Mongolian Academy of Sciences Pub Date : 2022-03-29 DOI: 10.5564/pmas.v62i01.2085

Altanbold Enkhbold, U. Khukhuudei, Dash Doljin

{"title":"review of modern trends and historical stages of development of lake research in Mongolia","authors":"Altanbold Enkhbold, U. Khukhuudei, Dash Doljin","doi":"10.5564/pmas.v62i01.2085","DOIUrl":"https://doi.org/10.5564/pmas.v62i01.2085","url":null,"abstract":"There is the need to divide Mongolia's lake research into trends of development stages and to provide a detailed analysis of modern lake research. The aim of this study is to identify the development stages of lake research in Mongolia and to analyse lake research development. This study provides a comparative analysis of the development trends of lake research carried out in the country. The historical development of lake research in Mongolia was divided into 4 stages in chronological order, highlighting the current research direction, scope, and contribution to geography. Since 1990, researchers from many countries have been able to conduct extensive research in Mongolia, and especially since the 2000s, lake research intensified owing to global warming and environmental change. Studies, in particular, focus on paleogeography, paleoclimate changes, lake water regimes and water level fluctuation. Mongolian lake-based studies have tended to identify environmental evolution from the Pleistocene to the Holocene. The investigated areas were primarily Khuvsgul Lake and Darkhad Basin, Lakes Valley and Gobi Lakes, the Great Lake Depression, Mongolian Altai and Khangai Mountain lakes. Since 1990, scientists from Russia, Mongolia, Germany, China, Japan, USA and South Korea have been increasingly focusing on research into lakes in Mongolia. Paleogeographic and paleoclimatic reconstruction, based on the lakes of Central Asia, is being conducted in an innovative manner. Dividing Mongolia's lake research into development stages and identifying research trends will help determine which areas of research can be developed in the future.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42079323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia 东蒙古贝尔湖沉积物岩性及主要元素含量

Proceedings of the Mongolian Academy of Sciences Pub Date : 2022-03-10 DOI: 10.5564/pmas.v62i01.2084

O. Tserentsegmid, D. Davaasuren

{"title":"Lithology and the content of some major elements in the sediments of Buir Lake, East Mongolia","authors":"O. Tserentsegmid, D. Davaasuren","doi":"10.5564/pmas.v62i01.2084","DOIUrl":"https://doi.org/10.5564/pmas.v62i01.2084","url":null,"abstract":"The freshwater Buir Lake in Khalkh Gol soum, Dornod aimag, is located (47° 51′ 47″ N, 117° 51′ 29″ E) on the border of Mongolia and Inner Mongolia, China. The northwest and northeast part of the lake is swampy, and is flat in the rest part. This research paper reveals the lithology and some major elements content (SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O, Na2O, MnO and P2O5) of the core sediments and their distribution along the depth and the Chemical Index of Alteration (CIA), which will be a significant factor in restoring environmental change. According to the data of analysis of major elements of Buir Lake sediments, the concentration of SiO2 ranges from 42.92 to 58.29%; Al2O3 = 9.25-12.83%; Fe2O3 = 3.66-4.79%; TiO2 = 0.46-0.62%; MnO = 0.08-0.13%; CaO = 5.73-11.56%; MgO = 1.34-1.81%; Na2O = 0.72-1.50%; K2O = 1.58-2.31%; and P2O5 = 0.14-0.26% respectively. The chemical index of alteration is basically the same as the distribution of SiO2, Al2O3, TiO2, Fe2O3, MgO, K2O and Na2O in the sediments of the lake, but their content at 32.5 cm interval of the core sharply decreases and also increases. This is perhaps due to global climate change. The content and distribution patterns of water-soluble elements, such as CaO, MnO, and P2O5, are negatively correlated with the chemical index of alteration. These lead to conclude that major elements of Buir Lake sediment and Chemical Index of Alteration are closely related to climatic changes in eastern Mongolia pertaining to the Upper Pleistocene and the Holocene epochs.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48421351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Results of the study of pH and organic matter in the surface soil of Ulaanbaatar 乌兰巴托市表层土壤pH和有机质的研究结果

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-12-29 DOI: 10.5564/pmas.v61i04.1928

Byambasuren Tsagaan, Ochirbat Ganbaatar, Azzayaa Otgonbayar

引用次数: 0

Occurrence and insecticide susceptibility of the grain aphid Sitobion avenae in northern Mongolia 蒙古北部禾蚜的发生及对杀虫剂的敏感性

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-12-29 DOI: 10.5564/pmas.v61i04.1926

Otgonzaya Munkhbayar, Jiang Zhu, Mei Li, Chuluunjav Chultem, Byambasuren Mijidsuren, X. Qiu

引用次数: 0

Distribution of TNF-α -308 G/A polymorphism among pediatric patients with pneumonia in Ulaanbaatar 乌兰巴托市儿童肺炎患者TNF-α -308 G/A多态性的分布

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-12-22 DOI: 10.5564/pmas.v61i04.1929

Enkhmunkh Batzorig, Temuujin Janchiv, Khulan Janchiv, O. Baldorj

{"title":"Distribution of TNF-α -308 G/A polymorphism among pediatric patients with pneumonia in Ulaanbaatar","authors":"Enkhmunkh Batzorig, Temuujin Janchiv, Khulan Janchiv, O. Baldorj","doi":"10.5564/pmas.v61i04.1929","DOIUrl":"https://doi.org/10.5564/pmas.v61i04.1929","url":null,"abstract":"Genetic studies indicate to the importance of individual genetic diversity on predictor of mortality. Furthermore, Single Nucleotide Polymorphisms can be used to identify disease-causing genes in humans and they can be either neutral or deleterious. Human Tumor necrosis factor-α is a well-known inflammation factor that is closely associated with sepsis and severe sepsis. Our objective was to evaluate the association of TNF-α -308 G/A promoter polymorphism with dependency to severity of pneumonia. Respiratory diseases, especially pneumonia, is the major cause of mortality and morbidity in Ulaanbaatar, Mongolia and the leading causes of pediatric hospitalization. We collected blood samples from 101 pediatric patients of the age group between \"new born\" and \"school aged\", who were treated and diagnosed with pneumonia in February 2019 and 2020, the pneumonia season in the country. Genomic DNA was extracted and performed by PCR-RFLP method to detect the presence of SNPs. The studies showed that the TNF-α -308 G/A polymorphism among pediatric patients, genotype G;G was 73.27%, genotype A;G was 22.77%, and genotype A;A was 3.96%. Our study demonstrated disassociation of TNF-α -308 G/A polymorphism with pneumonia severity in population.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47580173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impacts of aerobic self-training program on the physical development and preparation of female students 有氧自我训练计划对女学生体能发展和体能准备的影响

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-12-22 DOI: 10.5564/pmas.v61i04.1930

Gantulga Ragchaa

引用次数: 0

21st century permafrost distribution under the scenario of RCP2.6 and RCP8.5 in Mongolia RCP2.6和RCP8.5情景下蒙古21世纪多年冻土分布

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-12-22 DOI: 10.5564/pmas.v61i04.1927

S. Adiya, E. Erdenebat

引用次数: 0

Development of serological assay for detection of antibodies in the N protein of SARS-CoV-2 in human sera in Mongolia 蒙古国人血清SARS-CoV-2 N蛋白抗体血清学检测方法的建立

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-09-29 DOI: 10.5564/pmas.v61i03.1819

G. Davaakhuu, Zolzaya Sandag, Nomin Myagmar, Nomuun Oyunbat, A. Enkhtuya, Khurelsukh Buyanbat, Maral Davaanyam, Tuul Boldbaatar, Darmaa Badarch, Naranzul Tsedenbal, Lkhagvasuren Damdindorj, Oyunsuren Tsendsuren

{"title":"Development of serological assay for detection of antibodies in the N protein of SARS-CoV-2 in human sera in Mongolia","authors":"G. Davaakhuu, Zolzaya Sandag, Nomin Myagmar, Nomuun Oyunbat, A. Enkhtuya, Khurelsukh Buyanbat, Maral Davaanyam, Tuul Boldbaatar, Darmaa Badarch, Naranzul Tsedenbal, Lkhagvasuren Damdindorj, Oyunsuren Tsendsuren","doi":"10.5564/pmas.v61i03.1819","DOIUrl":"https://doi.org/10.5564/pmas.v61i03.1819","url":null,"abstract":"The capability to detect Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection and identify immune responses among the population is crucial for managing the outbreak of the COVID-19 pandemic.\u0000Although PCR-based nucleic acid detection techniques are utilized to detect viral infection in people, alternative tests capable of distinguishing between exposure and infection are urgently needed beyond this restricted window of detectable viral replication. Antibodies are produced in human sera within a few days after viral infection, providing longer period for performing tests to acquire reliable database.\u0000Herewith, we provide the results of our in-house developed ELISA (Enzyme-Linked Immunosorbent Assay) that displays all of the properties necessary for high-throughput of human sera sample analysis. This test does not involve the handling of live viruses, although it detects a variety of antibody types in serum and plasma of human after exposure to the virus.\u0000For in-house development of the kit, the nucleocapsid (N) gene of SARS-CoV-2 virus was cloned in the prokaryotic expression vector pGEX-6P-1, and purified N protein was used to detect IgG antibodies in human sera samples. In total 76 human serum samples that were collected before novel coronavirus registry in Mongolia in March 2020, as well as 200 serum samples from patients who had been infected by SARS-CoV-2 virus, were used.\u0000Among 200 serum samples, 188 were positive and 12 were false negative, while in non-infected cases 69 were negative and 7 were false positive, suggesting 94 per cent sensitivity and 90.7 per cent specificity of the kit, with p-values of 0.02.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43456292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessments of ecological health using soil algae diversity in Jargalant-Tain pass, Bogdkhan mountain 基于土壤藻类多样性的博格汗山口生态健康评价

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-09-28 DOI: 10.5564/pmas.v61i03.1822

B. Tsegmid

引用次数: 0

result of the influence for center pivot irrigation machine operations on rain intensity 中心枢纽灌溉机运行对降雨强度影响的结果

Proceedings of the Mongolian Academy of Sciences Pub Date : 2021-09-27 DOI: 10.5564/pmas.v61i03.1823

Delgermaa Lkhagvasuren, Nuuts Yadamsuren, Otgonkhuyag Balgan, Byambadorj Chagnaadorj

引用次数: 0