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Effect of nutrition-related infodemics and social media on maternal experience: A nationwide survey in a low/middle income country
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作者 Marwa M Zein Noha Arafa +1 位作者 Mortada H F El-Shabrawi Nehal Mohammed El-Koofy 《World Journal of Clinical Pediatrics》 2024年第1期93-106,共14页
BACKGROUND Undernutrition is a crucial cause of morbidity and mortality among children in low-or middle-income countries(LMICs).A better understanding of maternal general healthy nutrition knowledge,as well as misbeli... BACKGROUND Undernutrition is a crucial cause of morbidity and mortality among children in low-or middle-income countries(LMICs).A better understanding of maternal general healthy nutrition knowledge,as well as misbeliefs,is highly essential,especially in such settings.In the current era of infodemics,it is very strenuous for mothers to select not only the right source for maternal nutrition information but the correct information as well.AIM To assess maternal healthy nutritional knowledge and nutrition-related misbeliefs and misinformation in an LMIC,and to determine the sources of such information and their assessment methods.METHODS This cross-sectional analytical observational study enrolled 5148 randomly selected Egyptian mothers who had one or more children less than 15 years old.The data were collected through online questionnaire forms:One was for the general nutrition knowledge assessment,and the other was for the nutritional myth score.Sources of information and ways of evaluating internet sources using the Currency,Relevance,Authority,Accuracy,and Purpose test were additionally analyzed.RESULTS The mean general nutrition knowledge score was 29±9,with a percent score of 70.8%±12.1%(total score:41).The median myth score was 9(interquartile range:6,12;total score:18).The primary sources of nutrition knowledge for the enrolled mothers were social media platforms(55%).Half of the mothers managed information for currency and authority,except for considering the author's contact information.More than 60%regularly checked information for accuracy and purpose.The mothers with significant nutrition knowledge checked periodically for the author's contact information(P=0.012).The nutrition myth score was significantly lower among mothers who periodically checked the evidence of the information(P=0.016).Mothers dependent on their healthcare providers as the primary source of their general nutritional knowledge were less likely to hold myths by 13%(P=0.044).However,using social media increased the likelihood of having myths among mothers by approximately 1.2(P=0.001).CONCLUSION Social media platforms were found to be the primary source of maternal nutrition information in the current era of infodemics.However,healthcare providers were the only source for decreasing the incidence of maternal myths among the surveyed mothers. 展开更多
关键词 Nutrition Infodemics Maternal knowledge MYTH Low/middle income country
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Narrative Empathy and Patriotism--An Analysis of the Chinese“Main-Melody”Film My People,My Country
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作者 WANG Zi-ying 《Journal of Literature and Art Studies》 2024年第3期226-238,共13页
Narrative empathy is a relatively new theory and it can guide researchers in the studies of main-melody films so as to promote the communication of the core values of the society.The rhetorical mechanism of narrative ... Narrative empathy is a relatively new theory and it can guide researchers in the studies of main-melody films so as to promote the communication of the core values of the society.The rhetorical mechanism of narrative empathy can be illustrated from five rhetorical elements,including rhetor,rhetorical goal,rhetorical situation,rhetorical strategy and audience.The theory of narrative empathy can be applied to the case study of the film My People,My Country.In the production of this film,the directors are the rhetors.The rhetors uphold the tenet of closeness,choose the right rhetorical situation as the 70th birthday of the People’s Republic of China,and use appropriate rhetorical strategies in order to realize the rhetorical goals of evoking empathy and inspiring patriotic feelings in the audience’s minds.An exploration and application of narrative empathy can be conducive to the empathic communication of Chinese main-melody films in order to achieve better communication effect. 展开更多
关键词 narrative empathy main-melody films My People My country
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Epidemiological, Clinical Aspects and Outcome of Measles in a Low-Income Country in 2023
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作者 Sime Tchouamo Arielle Annick Enyama Dominique +7 位作者 Noukeu Diomède Atyam Ekotto Marie Christine Abouame Palma Haoua Epee Ngoue Jeannette Kago Tague Daniel Armand Touka Eric Brice Tasse Simo Nathalie Ines Nguéfack Félicité 《Open Journal of Pediatrics》 2024年第1期139-148,共10页
Introduction: Measles remains a worrying health problem in sub-Saharan African countries. There have been measles outbreaks in Cameroon with the most recent occurring between October 2022 and September 2023. The Centr... Introduction: Measles remains a worrying health problem in sub-Saharan African countries. There have been measles outbreaks in Cameroon with the most recent occurring between October 2022 and September 2023. The Centre region of Cameroon was the most affected in the country and being at the frontline of the fight against this illness, we conducted this study in order to determine the epidemiological and clinical characteristics as well as the outcome of children who contracted the measles and were hospitalized at the Yaoundé Gynaeco-Obstetric and Pediatric Hospital. Methodology: We conducted a cross-sectional descriptive and prospective study for one year from October 2022 to November 2023 corresponding to the duration of the outbreak. We included all children admitted in the pediatric unit for measles and its complications during this period. Results: In total, 60 children were enrolled. Their caregivers were mostly their mothers who had a mean age of 34.71 ± 9.55 years living in significant precarious conditions for the majority. The median age of children was 16 months (09 - 30 months). Twenty six percent of children (16) were less than 9 months. Girls were predominant (55%). Most children were not up to date with their routine EPI vaccination (80%) and most did not receive the measles and Rubella vaccine (76.67%). Clinical manifestations, included fever, conjunctivitis, and cough. Skin rash and catarrh (98.33% and 86.67% respectively) are the case definition signs of measles. The outcome was unfavorable for 4 children. One had a neurological disorder: coma and three presented with pneumonia and severe respiratory distress (6.67%). Conclusion: Measles is still being a reality and claiming lives in our context, emphasis should be made on immunization coverage and if possible, advocacies should be formulated to decrease the age of measles vaccine administration. 展开更多
关键词 MEASLES COMPLICATIONS Low-Income Countries
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Does country risk impact the banking sectors’non‑performing loans?Evidence from BRICS emerging economies
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作者 Chafic Saliba Panteha Farmanesh Seyed Alireza Athari 《Financial Innovation》 2023年第1期2477-2506,共30页
This study aims to fill the gap in the literature by specifically investigating the impact of country risk on the credit risk of the banking sectors operating in Brazil,Russia,India,China,and South Africa(BRICS),emerg... This study aims to fill the gap in the literature by specifically investigating the impact of country risk on the credit risk of the banking sectors operating in Brazil,Russia,India,China,and South Africa(BRICS),emerging countries.More specifically,we explore whether the country-specific risks,namely financial,economic,and political risks significantly impact the BRICS banking sectors’non-performing loans and also probe which risk has the most outstanding effect on credit risk.To do so,we perform panel data analysis using the quantile estimation approach covering the period 2004–2020.The empirical results reveal that the country risk significantly leads to increasing the banking sector’s credit risk and this effect is prominent in the banking sector of countries with a higher degree of non-performing loans(Q.25=−0.105,Q.50=−0.131,Q.75=−0.153,Q.95=−0.175).Furthermore,the results underscore that an emerging country’s political,economic,and financial instabilities are strongly associated with increasing the banking sector’s credit risk and a rise in political risk in particular has the most positive prominent impact on the banking sector of countries with a higher degree of non-performing loans(Q.25=−0.122,Q.50=−0.141,Q.75=−0.163,Q.95=−0.172).Moreover,the results suggest that,in addition to the banking sectorspecific determinants,credit risk is significantly impacted by the financial market development,lending interest rate,and global risk.The results are robust and have significant policy suggestions for many policymakers,bank executives,researchers,and analysts. 展开更多
关键词 Credit risk country risk BRICS Emerging markets Banking sector Political risk Quantile regression
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Socio-economic development of countries based on the Composite Country Development Index(CCDI)
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作者 Kalamkas NURALINA Raissa BAIZHOLOVA +2 位作者 Natalya ALEKSANDROVA Viktor KONSTANTINOV Alexander BIRYUKOV 《Regional Sustainability》 2023年第2期115-128,共14页
World experience indicates the existence of significant imbalances in the development of countries.The problem of assessing the rational development of the regional and national economy is becoming urgent,since such a... World experience indicates the existence of significant imbalances in the development of countries.The problem of assessing the rational development of the regional and national economy is becoming urgent,since such assessments can prevent development imbalances across countries.The aim of this study is to elaborate a methodology to assess the countries’socio-economic development by integraring 12 modern indices of socio-economic development into the Composite Country Development Index(CCDI).The methodology of this research was based on a set of key indices that described socio-economic development level in four fields(social development,digital development,economic development,and environmental security)and then these indices were integrated into the CCDI.The study further applied factor analysis and R-Studio software to define the gaps of social and economic development in 59 selected countries using the trigonometric function of the angle sine.The correlation analysis confirmed the existence of a close interrelation among the studied countries.This paper noted that due to the emergence of new priorities,it is necessary to revise the assessment methodology of socio-economic development level and expand them to cover the decisive factors.This was confirmed by the results obtained,demonstrating various combinations of the development level in the four fields and their impact on the CCDI.The scientific contribution of this research is to form a methodology(e.g.,the CCDI)for evaluating the socio-economic development level of countries in the world. 展开更多
关键词 Composite country Development Index(CCDI) Correlation analysis Social development Digital development Economic development Environmental security
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Origin of the Dashuigou Independent Tellurium Deposit at the Southeastern Qinghai-Tibet Plateau:Based on the Abundances of Trace Elements in the Country Rocks
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作者 Jianzhao Yin Shoupu Xiang +2 位作者 Haoyu Yin Hongyun Shi Yuhong Chao 《Advances in Geological and Geotechnical Engineering Research》 2023年第4期41-55,共15页
Through a detailed study of the abundances and spatial-temporal distribution patterns of Te,Bi,As,Se,Cu,Pb,Zn,Au,and Ag in the rock types of different geological epochs in the Dashuigou independent tellurium deposit,a... Through a detailed study of the abundances and spatial-temporal distribution patterns of Te,Bi,As,Se,Cu,Pb,Zn,Au,and Ag in the rock types of different geological epochs in the Dashuigou independent tellurium deposit,and in combination with other research findings of previous researchers in this area,the authors conclude as follows:Abundances of the main ore-forming elements Te,Bi,As,Se,Au,and Ag are not high in the regional geological background,generally lower or close to their respective crustal Clark values,but almost all altered country rocks contain high levels of ore-forming elements.This indicates that the deposit’s ore-forming elements do not come from the country rocks.This also indicates that the geological thermal events that cause alteration and mineralization originate from depths and may be related to mantle plumes.Considering the distribution pattern of these ore-forming elements in the ore bodies’hanging wall and footwall,the metallogenic mechanism may be as follows:Mineralization is not achieved through lateral secretion in the horizontal or near horizontal direction,but rather through the upward movement and emplacement of deep ore-forming elements driven by geological processes such as mantle plumes.In addition,the migration of deep ore-forming elements is not achieved through dispersed infiltration between overlying rock particles,but through non widespread concentrated penetrating channels.This type of channel is likely to be the expansion structures where faults from different directions intersect,or where linear faults intersect with circular structures. 展开更多
关键词 Origin of ore-forming elements The Dashuigou independent tellurium deposit Trace element abundance The country rocks The mantle plume
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目的论视角下的My Country and My People两个中译本文化回译研究 被引量:1
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作者 王学风 《湖北函授大学学报》 2014年第20期125-126,132,共3页
起源于20世纪70年代的德国功能主义目的论翻译理论打破了西方翻译研究的语言学范式,经历了四个阶段的发展,形成了三个原则。本文以目的论三原则为指导,分析了林语堂的My Country and My People两个中译本,并选取有代表性的实例对两个中... 起源于20世纪70年代的德国功能主义目的论翻译理论打破了西方翻译研究的语言学范式,经历了四个阶段的发展,形成了三个原则。本文以目的论三原则为指导,分析了林语堂的My Country and My People两个中译本,并选取有代表性的实例对两个中译本进行对比研究,分析其文化回译时选用的翻译策略及方法。研究表明目的论对翻译过程起到很好的指导作用,可广泛应用于翻译实践。 展开更多
关键词 目的论三原则 MY country and MY People 两个中译本 文化回译
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Peace of Mind in Earthquake Country
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作者 左玉玲 《国际地震动态》 2009年第11期35-35,共1页
关键词 《Peace of MIND in EARTHQUAKE country 书刊 发行工作 编辑工作
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再谈翻译的忠实问题——以林语堂的My Country and My People为个案分析
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作者 左丽芬 《海外英语》 2013年第14期171-173,共3页
该文以林语堂的My Country and My People为个案来分析林氏用英语写作的真实性质,得出林氏既是在创作也是在作一种特殊性质的翻译活动——"文化变译",并通过林氏的"文化变译"活动重新认识翻译的忠实问题。
关键词 MY country and MY PEOPLE 文化变译 忠实问题
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Comparative analysis of open and laparoscopic colectomy for malignancy in a developing country 被引量:8
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作者 Pierre-Anthony Leake Kristen Pitzul +1 位作者 Patrick O Roberts Joseph M Plummer 《World Journal of Gastrointestinal Surgery》 SCIE CAS 2013年第11期294-299,共6页
AIM: To compare the short-term, including oncologic, outcomes of open vs laparoscopic colectomy for cancer in a developing country. METHODS: The records of patients who underwent elective open and laparoscopic colecto... AIM: To compare the short-term, including oncologic, outcomes of open vs laparoscopic colectomy for cancer in a developing country. METHODS: The records of patients who underwent elective open and laparoscopic colectomies for cancer at the University Hospital of the West Indies between January 2005 and December 2010 were retrospectively reviewed. Demographic(age, gender, Charlson comorbidity index score), peri-operative, post-operative and oncologic data were collected for each patient. Specific oncologic variables included lymph node yield, pathologic stage, grade, proximal, distal and circumferential margin involvement. Fisher's exact, Mann-Whitney, and binary logistic regression tests were used for analysis. Significance level was set atP < 0.05. RESULTS: There were 87 cases for open colectomy(OC) and 17 cases for laparoscopic colectomy(LC). Demographics did not significantly differ between OC and LC groups. Intra-operative blood loss and postoperative analgesic requirements did not significantly differ between groups. There was a trend towards longer operating times in OC group and shorter hospital stay in the LC group. Lymph node yield(14 vs 14, P = 0.619), proximal(10 cm vs 7 cm, P = 0.353) and distal(8 cm vs 8 cm, P = 0.57) resection margin distance and circumferential margin involvement(9 vs 0, P = 0.348) did not significantly differ between groups. Thirty-day morbidity was equivalent between groups(22 vs 6, P = 0.774). There were 6 deaths within 30 d of initial procedure, all in the OC group(6.9%). CONCLUSION: Laparoscopic colectomy in a developing country is oncologically safe and represents a option for colonic malignancies in these regions. Such data encourage the continued laparoscopic development. 展开更多
关键词 LAPAROSCOPY COLECTOMY Cancer Developing country Colorectal ONCOLOGY SHORT-TERM Outcomes
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The microbial content of unexpired pasteurized milk from selected supermarkets in a developing country 被引量:3
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作者 Melisa Anderson Patrice Hinds +3 位作者 Stacyann Hurditt Princena Miller Donovan McGrowder Ruby Alexander-Lindo 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2011年第3期205-211,共7页
Objective:To determine the presence and levels of microbes in unexpired pasteurized milk from randomly selected supermarkets in Kingston,Jamaica.Methods:The quantitative study used a stratified random sampling techniq... Objective:To determine the presence and levels of microbes in unexpired pasteurized milk from randomly selected supermarkets in Kingston,Jamaica.Methods:The quantitative study used a stratified random sampling technique in the selection of the 20 representative milk samples from six(6) supermarkets.Microbiological tests such as methylene blue reduction,standard plate count(SPC),coliform plate count(CPC),purity plate culture,gram staining and biochemical tests were performed to examine the microbes in purchased unexpired pasteurized milk.Results:One sample(BCr016) had a pH of 4.0.a rancid odour and curdled appearance.It decolourized within one hour during the methylene blue reduction test and was classified as class 4 milk.Seven of the samples were sterile with no microbe growth on the plate count agar and violet red bile salt agar(VRBA).The milk samples that appeared to be safe for consumption were all 10,11,12 and 13 days before expiration.The VRBA sample BCr016,had a colony count of 13 400 CFU/ mL.There was the presence of Escherichia coli in sample LCr021 which had a standard plate count of 1 580 SPC/mL and a coliform count of 500 CFU/mL.Enterobacter sp.was present in colonies from BCr016 and all the other milk samples.Conclusions:Unacceptable levels of Entembacter spp.and Escherichia coli were found in most of the samples.Effective measures to ensure safe milk for human consumption such as the phosphatase test and methylene blue reduction test should be routinely performed on each batch of milk processed by dairy plants. 展开更多
关键词 MICROBIAL content Pasteurized MILK Supermarkets MICROBE MICROBIOLOGICAL test ESCHERICHIA coli ENTEROBACTER spp MILK Dairy plant Developing country
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Cognitive Approach's Application in the Country High School English Teaching
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作者 欧海燕 《陕西师范大学学报(哲学社会科学版)》 CSSCI 北大核心 2004年第S2期423-425,共3页
On the basis of analyzing the present conditions of country high school English teaching, this paper attempts to justify the feasibility of Cognitive Approach’s application to the country high school English teaching... On the basis of analyzing the present conditions of country high school English teaching, this paper attempts to justify the feasibility of Cognitive Approach’s application to the country high school English teaching and discusses its operation in detail. 展开更多
关键词 COGNITIVE Approach country Education High SCHOOL English Teaching
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A Novel Method for Resolving and Completing Authors' Country Affiliation Data in Bibliographic Records 被引量:1
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作者 Ba Xuan Nguyen Jesse David Dinneen Markus Luczak-Roesch 《Journal of Data and Information Science》 CSCD 2020年第3期97-115,共19页
Purpose: Our work seeks to overcome data quality issues related to incomplete author affiliation data in bibliographic records in order to support accurate and reliable measurement of international research collaborat... Purpose: Our work seeks to overcome data quality issues related to incomplete author affiliation data in bibliographic records in order to support accurate and reliable measurement of international research collaboration(IRC).Design/methodology/approch: We propose, implement, and evaluate a method that leverages the Web-based knowledge graph Wikidata to resolve publication affiliation data to particular countries. The method is tested with general and domain-specific data sets.Findings: Our evaluation covers the magnitude of improvement, accuracy, and consistency. Results suggest the method is beneficial, reliable, and consistent, and thus a viable and improved approach to measuring IRC.Research limitations: Though our evaluation suggests the method works with both general and domain-specific bibliographic data sets, it may perform differently with data sets not tested here. Further limitations stem from the use of the R programming language and R libraries for country identification as well as imbalanced data coverage and quality in Wikidata that may also change over time.Practical implications: The new method helps to increase the accuracy in IRC studies and provides a basis for further development into a general tool that enriches bibliographic data using the Wikidata knowledge graph.Originality: This is the first attempt to enrich bibliographic data using a peer-produced, Webbased knowledge graph like Wikidata. 展开更多
关键词 International research collaboration measurement Bibliographic data country identification Knowledge graphs Wikidata Open data
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Management of Cervical Intra Epithelial Neoplasia by Loop Electrosurgical Excision Procedure in a Low Resource Country: An Experience from the YaoundéGeneral Hospital, Cameroon 被引量:1
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作者 Jean Dupont Kemfang Ngowa Anny Ngassam +4 位作者 Jovanny Fouogue Tsuala Juny Metogo Zacharie Sando Angèle Kabeyene Jean Marie Kasia 《Open Journal of Obstetrics and Gynecology》 2015年第9期481-486,共6页
Background: Cervical cancer is the third most common cancer worldwide, and 80% of cases occur in the developing world. A critical component of effective cervical cancer screening programs is the ability to offer women... Background: Cervical cancer is the third most common cancer worldwide, and 80% of cases occur in the developing world. A critical component of effective cervical cancer screening programs is the ability to offer women appropriate and effective treatment for cervical intra epithelial neoplasia (CIN). Objectives: This study aimed at assessing the primary experience of management of CIN by Loop Electrosurgical Excision Procedure (LEEP) in a low resource country. Methods: We carried out a descriptive cross sectional study at the Yaoundé General Hospital in Cameroon. Results: Twenty three cases of CIN were treated by LEEP. Mean age of patients was 40.5 ± 9.9 years. Six (26.1%) patients were infected by the Human Immunodeficiency Virus (HIV). LEEP was indicated in 21 (91.30%) cases for CIN2 and CIN3. The mean duration of the surgical procedure was 10 ± 3 minutes. There was one (4.3%) complication (persistent cervical bleeding). Surgical margins were negative for dysplasia or invasive carcinoma in 18 (78.26%) cases and non-applicable in 5 (21.73%) cases (thermal artefacts of margins and cervicitis without CIN). One patient with micro invasive carcinoma on post-operative histology was treated by total hysterectomy. Cervical cytology was normal at 6 months post LEEP for 15 cases out of 16 (93.8%) patients who performed the test. One woman achieved pregnancy and delivered a term baby. Conclusion: Treatment of CIN by LEEP is feasible, safe and effective in our setting. 展开更多
关键词 CERVICAL CANCER CERVICAL Intraepithelial NEOPLASIA LEEP Screening CERVICAL CANCER LOW RESOURCE country
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Animals:Country symbols
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作者 周明 《中学生英语(高中版)》 2005年第15期12-13,共2页
关键词 白头鹰 英格兰 Animals:country symbols 富兰克林 澳大利亚
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Different Culture from Different Country
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作者 冯岩 《海外英语》 2010年第4X期128-128,共1页
Culture is defined as the deposit of knowledge,experience,beliefs values,attitudes,meanings,religion,notions of time,roles,spatial relations,Culture also refers to history,geography,local conditions and customs,tradit... Culture is defined as the deposit of knowledge,experience,beliefs values,attitudes,meanings,religion,notions of time,roles,spatial relations,Culture also refers to history,geography,local conditions and customs,tradition customs,the way of life,literature and art,code of conduct and value outlook. 展开更多
关键词 DIFFERENT country DIFFERENT CULTURE
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A Study of Xi Jinping Thought on Governing the Country Based on the Unity of “Party Spirit-People’s Nature”
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作者 Li Kai 《学术界》 CSSCI 北大核心 2019年第4期215-225,共11页
The unity of “party spirit-people’s nature” is the basic proposition of Xi Jinping’s governance.Deng Xiaoping summarized the experience and lessons in the early days of reform and opening up,and put forward the ba... The unity of “party spirit-people’s nature” is the basic proposition of Xi Jinping’s governance.Deng Xiaoping summarized the experience and lessons in the early days of reform and opening up,and put forward the basic line of the “leadership and unity” of the party in the early stage of socialism around “one center,two basic points”;Xi Jinping’s so-called “unification”,which is based on the the basic line of Deng Xiaoping’s initial stage of building a socialist country that is “rich,strong,democratic,civilized,harmonious and beautiful”,has further established the importance of “people as the center” and “party’s leadership”.Therefore,the “people-centered” and “the party’s overall leadership” are unified and become the basic idea of General Secretary Xi Jinping’s governance of the country.Xi Jinping has put forward the unity of “party spirit-people’s nature”,the “consistency” between governing the country and politics,and the “integration” between the people’s interests and the party’s leadership,thus forming “persistence”,“comprehensive”,“confidence”,“maintenance” and other assertions. 展开更多
关键词 the UNITY of party spirit-people's NATURE governing the country XI Jinping THOUGHT
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Stakeholders Theory:An Analysis of Eco-Labeling of Commercial Products in A Developing Country(Kenya) Stock Exchange Listed Companies
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作者 Maureen Ann Shole 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期104-104,共1页
International environmental organizations propose voluntary eco-labeling as a market incentive to promote industry to operate in an ecologically sustainable and environmentally friendly manner,for instance,with the in... International environmental organizations propose voluntary eco-labeling as a market incentive to promote industry to operate in an ecologically sustainable and environmentally friendly manner,for instance,with the introduction of ISO 14000.These standards assist organizations to minimize their operations negatively affecting the environment and comply with applicable laws and regulations.Support for eco-labeling has been one of the ways that 展开更多
关键词 eco-labeling STAKEHOLDERS developing country
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Geochemical and Boron Isotopic Evidence that Tourmaline Records Country Rock Assimilation of Leucogranites in the Himalayan Orogen
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作者 HU Guyue GAO Li’e +1 位作者 ZENG Lingsen LI Yike 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2022年第1期123-134,共12页
Tourmaline geochemical and boron(B)isotopic compositions in two-mica granites(TMG),tourmaline-bearing leucogranites(Tou-LG),tourmalites and metapelites from the Gyirong-Malashan areas of the Himalayan orogen provide e... Tourmaline geochemical and boron(B)isotopic compositions in two-mica granites(TMG),tourmaline-bearing leucogranites(Tou-LG),tourmalites and metapelites from the Gyirong-Malashan areas of the Himalayan orogen provide evidence for country rock assimilation during the intrusion of Himalayan leucogranite.The schorls in Gyirong leucogranitic plutons show low contents of MgO(0.238%-1.160%)and δ^(11)B values(-12.1‰--11.2‰),while dravites gathered in the contact zone between the leucogranitic veins and metapelites show high contents of MgO(4.815%-6.755%)and δ^(11)B values(-10.7‰--9.3‰).This geochemical and isotopic variation of tourmalines can also be identified in the Malashan gneiss dome.As a result,three types of tourmaline were identified in the Himalayan orogen:(1)Tou-Ⅰ in the TMG and Tou-LG,which is the most common tourmaline type of schorl;(2)Tou-Ⅱ(dravite and high-Mg schorl)in the Tou-LG and tourmalite at the margins of the leucogranite;and(3)Tou-Ⅲ(mainly dravite,with minor high-Mg schorl)in metapelites of the High Himalayan Crystalline Sequence.The lenses and veins of Tou-LG may have experienced metasomatism and assimilation as a result of interaction with the High Himalayan Crystalline Sequence metasedimentary country rocks,which can be traced by the geochemical and isotopic characteristics of the tourmaline therein. 展开更多
关键词 boron isotope TOURMALINE GRANITE country rock assimilation Himalayan orogen
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Dinosaur Footprints of Early Cretaceous in Site 1 ,Yanguoxia ,Yongjing Country ,Gansu Province
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《Journal of China University of Geosciences》 SCIE CSCD 2001年第2期6-,61,共2页
关键词 SITE Yongjing country Gansu Province Yanguoxia Dinosaur Footprints of Early Cretaceous in Site 1
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