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Disclosing of Thousand Years' Mystery-- Origin of the Book of Changes 被引量:2
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作者 Jinzhong Yan 《Journal of Physical Science and Application》 2017年第1期8-20,共13页
The Book of Changes is a huge system, including (1) Taiji Yin-yang five elements system; (2) Taiji-2 status-4 images-8 hexagrams--64 hexagrams, internal 8 hexagrams and external 8 hexagrams; (3) moral system, "... The Book of Changes is a huge system, including (1) Taiji Yin-yang five elements system; (2) Taiji-2 status-4 images-8 hexagrams--64 hexagrams, internal 8 hexagrams and external 8 hexagrams; (3) moral system, "Tao generates one, one generates two, two generate three and three generate everything"; (4) heavenly stems and earthly branches system; (5) Hetu, Luoshu and 9 grid pattern systems; (6) 60 Jiazi system (a cycle of 60 years) of year, month, day and hour; (7) TCM five evolutive phases and six climatic factors system, including host evolutive phase and host climatic factor, guest evolutive phase and guest climatic factor. The Book of Changes is stemmed fi'om accurate recognition and description on life system and movement, e.g. it can (1) describe the structure, movements and changes of life core system--five abdominal Zang organs and five abdominal Fu organs with Yin-yang four-season five elements, 10 heavenly stems, Hetu, internal 8 hexagrams and host evolutive phase of five evolutive phases; (2) describe the structure, movements and changes of outside system of life form with Yin-yang six climatic factors five elements, 12 earthly branches, Luoshu, external 8 hexagrams, host climatic factor of six climatic factors; (3) describe the system of life form core structure combined with outside system with 12 energy channels system and 64 hexagrams system; (4) describe the four gradations in life form with Taiji-2 status-4 images-8 hexagrams system and moral system; (5) describe the power system of development and growth--longitudinal four seasons of life form via 60 Jiazi system (a cycle of 60 years) of year, month, day and hour; (6) the horizontal four-season movements of life form generate TCM host evolutive phase and host climatic factor, whilst the longitudinal four-season movements generate TCM guest evolutive phase and guest climatic factor. With the disclosing of origin of The Book of Changes, the universe secretes are being fully discovered. 展开更多
关键词 the book of changes ORIGIN LIFE SYSTEM movement.
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Analysis of New Senior English for China Student’s Book 1
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作者 Xia Qian 《语言与文化研究》 2024年第4期128-132,共5页
This article will firstly discuss the context overview of English teaching and learning in China. Under thiscircumstance, a problematic element will be examined of the New Senior English for China Student’s Book 1 an... This article will firstly discuss the context overview of English teaching and learning in China. Under thiscircumstance, a problematic element will be examined of the New Senior English for China Student’s Book 1 and critical appraisal ofhow this element relates to other elements of curriculum development will be analyzed. The recommended changes and demonstrationmechanisms for evaluating the changes are put forward in the last two parts. 展开更多
关键词 New Senior English for China Student’s book 1 Assessment Critical appraisal Curriculum development changes
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Associations of soybean products intake with blood pressure changes and hypertension incidence: the China-PAR project 被引量:3
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作者 Jia-Liu WEI Xin-Yan WANG +9 位作者 Fang-Chao LIU Ji-Chun CHEN Jie CAO Jian-Xin LI Dong-Sheng HU Chong SHEN Fang-Hong LU Ying-Xin ZHAO Jian-Feng HUANG Xiang-Feng LU 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2020年第7期384-392,共9页
Background The relationships between dietary intake of soybean products and incident hypertension were still uncertain.This study aimed to illustrate the associations between intake of soybean products with risks of i... Background The relationships between dietary intake of soybean products and incident hypertension were still uncertain.This study aimed to illustrate the associations between intake of soybean products with risks of incident hypertension and longitudinal changes of blood pressure in a prospective cohort study.Methods We included 67,499 general Chinese adults from the Project of Prediction for Atherosclerosis Cardiovascular Disease Risk in China(China-PAR).Information about soybean products consumption was collected by standardized questionnaires,and study participants were categorized into the ideal(≥125 g/day)or non-ideal(<125 g/day)group.Hazard ratios(HRs)and corresponding 95%confidence intervals(95%CIs)for incident hypertension were calculated using Cox proportional hazard models.Among participants with repeated measures of blood pressure,generalized linear models were used to examine the relationships between soybean products consumption and blood pressure changes.Results During a median follow-up of 7.4 years,compared with participants who consumed<125 g of soybean products per day,multivariable adjusted HR for those in the ideal group was 0.73(0.67-0.80).This inverse association remained robust across most subgroups while significant interactions were tested between soybean products intake and age,sex,urbanization and geographic region(P values for interaction<0.05).The mean systolic and diastolic blood pressure levels were 1.05(0.71-1.39)mmHg and 0.44(0.22-0.66)mmHg lower among participants in the ideal group than those in the non-ideal group.Conclusions Our study showed that intake of soybean products might reduce the long-term blood pressure levels and hypertension incidence among Chinese population,which has important public health implications for primary prevention of hypertension. 展开更多
关键词 Blood pressure changes Chinese population Cohort study HYPERTENSION Soybean products
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Age-related changes of lateral ventricular width and periventricular white matter in the human brain: a diffusion tensor imaging study 被引量:1
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作者 Yong Hyun Kwon Sung Ho Jang Sang Seok Yeo 《Neural Regeneration Research》 SCIE CAS CSCD 2014年第9期986-989,共4页
Introduction Aging is the accumulation of multidimensional deterioration of process- ing of biological, psychological, and social changes with expansion over time (Bowen and Atwood, 2004; Grady, 2012). Aging-related... Introduction Aging is the accumulation of multidimensional deterioration of process- ing of biological, psychological, and social changes with expansion over time (Bowen and Atwood, 2004; Grady, 2012). Aging-related changes are typically accompanied by decline in cognitive function, urinary control, sensory-motor function, and gait ability (Bradley et al., 1991; Bowen and Atwood, 2004; Hedden and Gabrieli, 2004; Grady, 2012; Moran et al., 2012). In addition, a number of studies have suggested changes in brain structure with normal aging, such as decrease in cortical thickness or increase in ventricular width (Blatter et al., 1995; Tang et al., 1997; Uylings and de Brabander, 2002; Preul et al., 2006; Apostolova et al., 2012). In particular, ventricular enlargement has been suggested as a structural biomarker for normal aging and progression of some illnesses, such as Alzheimer's disease (Blatter et al., 1995; Tang et al., 展开更多
关键词 Age-related changes of lateral ventricular width and periventricular white matter in the human brain a diffusion tensor imaging study
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Studies on Structural Changes of Collagen in Silicosis
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作者 LIYU-RUI HUXUN 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 1994年第4期302-306,共5页
In order to provide scientific information on the prevention and treatment of silicosis,studies about changes of silicotic collagen in lungs were carried out. In this paper, we present experiments about the structural... In order to provide scientific information on the prevention and treatment of silicosis,studies about changes of silicotic collagen in lungs were carried out. In this paper, we present experiments about the structural changes of collagen in silicotic lungs of rats and patients. These included electron microscopy, circular dichroism and infrared spectroscopy studies of collagen fibers. The results indicated that fibers of silicotic collagen were shorter in length, smaller in diameter and decreased in α-helix content. The -Si-O-R- group and -OH group were found increased and -C-C- backbone shortened. The increase of -Si-O-R-group indicated that silica formed linking bridges between collagens which may be the cause of progressive enlargement of nodules 展开更多
关键词 SI In studies on Structural changes of Collagen in Silicosis
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Extract and Simple Explanation on the Principles of Taiji Studies
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作者 Feng Xu Bin Xiao Weili Qian 《Chinese Medicine and Culture》 2020年第1期29-32,共4页
Taiji studies are a field of study that has its roots in the philosophical thought of the Yi Jing or Book of changes.It integrates the self‑cultivation traditions of Confucianism,Buddhism,and Daoism,and centers its ac... Taiji studies are a field of study that has its roots in the philosophical thought of the Yi Jing or Book of changes.It integrates the self‑cultivation traditions of Confucianism,Buddhism,and Daoism,and centers its academic system mostly on the perspective of the“states view”(jing jie guan).From the standpoint of its philosophical theory,Taiji studies divide the understanding of Dao into three theoretical states:the state of existence(you jie),the state of existence‑nonexistence(you wu jie),and the state of nonexistence(wu jie).It also establishes a theoretical structure that mainly includes“three states and nine axioms,”“One Dao and Nine theory sections,”and“Three practice levels and Nine secrets.”Based on traditional Chinese culture and philosophy,Taiji studies are continuously integrating the essence of them for better understanding and raising,and finally set up a rational school of Taiji Da Dao。 展开更多
关键词 State of existence state of nonexistence Taiji studies Yi Jing(《易经》book of changes)
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On the Modern English Picture Book in the Teaching of English Reading in Lower Grades of Elementary School
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作者 姚琳虹 《海外英语》 2017年第16期241-242,共2页
Nowadays, more and more educators have affirmed that picture book plays an important significance in the development of children and thought that reading picture book is indispensable to the education of lower grades ... Nowadays, more and more educators have affirmed that picture book plays an important significance in the development of children and thought that reading picture book is indispensable to the education of lower grades of elementary school.However, the teaching of reading in English, most teachers have not realized the satisfactory teaching effect, it is necessary to analyze the theoretical basis of English picture book and its application in the teaching of English reading in lower grades of elementary school and dig its value. 展开更多
关键词 English picture book lower grades of elementary school English reading study on teaching forms of picture book
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A BooK of Great Value For Tibetan Studies
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《China's Tibet》 2000年第3期48-48,共1页
关键词 A book of Great Value For Tibetan studies
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Climate change effects in the Western Himalayan ecosystems of India: evidence and strategies 被引量:4
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作者 Vindhya Prasad Tewari Raj Kumar Verma Klaus von Gadow 《Forest Ecosystems》 SCIE CSCD 2017年第3期232-240,共9页
Background: The fragile landscapes of the Himalayan region are highly susceptible to natural hazards, and there is ongoing concern about current and potential climate change impacts. This study provides background in... Background: The fragile landscapes of the Himalayan region are highly susceptible to natural hazards, and there is ongoing concern about current and potential climate change impacts. This study provides background information on India's Western Himalayas and reviews evidence of warming as well as variability in precipitation and extreme events.Methods: Understanding and anticipating the impacts of climate change on Himalayan forest ecosystems and the services they provide to people are critical. Efforts to develop and implement effective policies and management strategies for climate change mitigation and adaptation requires particular new research initiatives. The various studies initiated and conducted in the region are compiled here.Results: Several new initiatives taken by the Himalayan Forest Research Institute in Shimla are described. This includes new permanent observational field studies, some with mapped trees, in high altitude transitional zones for continuous monitoring of vegetation response. We have also presented new strategies for mitigating potential climate change effects in Himalayan forest ecosystems.Conclusions: Assessment of the ecological and genetic diversity of the Himalayan conifers is required to evaluate potential responses to changing climatic conditions. Conservation strategies for the important temperate medicinal plants need to be developed. The impact of climate change on insects and pathogens in the Himalayas also need to be assessed. Coordinated efforts are necessary to develop effective strategies for adaptation and mitigation. 展开更多
关键词 Himalayan ecosystem Climate change New strategies High altitude New observational studies
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Quantifying the effect of persistent dryer climates on forest productivity and implications for forest planning:a case study in northern Germany 被引量:1
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作者 Matthias Albert Ralf-Volker Nagel +1 位作者 Johannes Sutmoller Matthias Schmidt 《Forest Ecosystems》 SCIE CSCD 2018年第4期451-471,共21页
Background: Forest management decisions are based on expectations of future developments. For sound decisions it is essential to accurately predict the expected values in future developments and to account for their i... Background: Forest management decisions are based on expectations of future developments. For sound decisions it is essential to accurately predict the expected values in future developments and to account for their inherent uncertainty,for example the impact of climate change on forests. Changing climatic conditions affect forest productivity and alter the risk profile of forests and forest enterprises. Intensifying drought stress is seen as one major risk factor threatening forest management in the north German lowlands. Drought stress reduces tree growth and vitality and might even trigger mortality. But so far, it is not possible to quantify effects of a persistent dryer climate on forest productivity at a level suitable for forest management.Methods: We apply a well-established single-tree forest growth simulator to quantify the effect of persistent dryer climates on future forest productivity. We analyse the growth of Scots pine(Pinus sylvestris L.), European beech(Fagus sylvatico L.) and oak(Quercus robur L. and Quercus petraea(Matt.) Liebl.) in two forest regions in the north German lowlands for a time interval of 60 years until 2070. The growth response under three different climate projections is compared to a baseline scenario.Results: The results show clear differences in volume increment to persistent dryer climates between tree species. The findings exhibit regional differences and temporal trends. While mean annual increment at biological rotation age of Scots pine and oak predominantly benefits from the projected climate conditions until 2070, beech might suffer losses of up to 3 m^3·ha^(-1)yr^(-1) depending on climate scenario and region. However, in the projection period2051 to 2070 the uncertainty ranges comprise positive as well as negative climatic effects for all species.Conclusions: The projected changes in forest growth serve as quantitative contributions to provide decision support in the evaluation of, for example, species future site suitability and timber supply assessments. The analysis of productivity changes under persistent dryer climate complements the drought vulnerability assessment which is applied in practical forestry in northwestern Germany today. The projected species' productivity has strong implications for forest management and the inherent uncertainty needs to be accounted for. 展开更多
关键词 Climate change Forest growth Forest productivity Persistent dryer climate simulation study Uncertainty
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Oderly accumulation theory of shale system petroleum resource and its prospecting significance-A case study of Chang 7 Member of Yanchang Formation in Ordos Basin 被引量:5
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作者 Cui Jingwei Zhu Rukai +1 位作者 Li Shixiang Zhang Zhongyi 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第S1期265-266,共2页
1 Introduction Shale formations bear abundant mineral resource and*unconventional petroleum resource,and the unconventional petroleum resource that contain in the shale formation should be integrated and researched.
关键词 In Oderly accumulation theory of shale system petroleum resource and its prospecting significance-A case study of Chang 7 Member of Yanchang Formation in Ordos Basin
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A comprehensive study of long-term skeletal changes after spinal cord injury in adult rats 被引量:1
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作者 Tiao Lin Wei Tong +11 位作者 Abhishek Chandra Shao-Yun Hsu Haoruo Jia Ji Zhu Wei-Ju Tseng Michael A Levine Yejia Zhang Shi-Gui Yan X Sherry Liu Dongming Sun Wise Young Ling Qin 《Bone Research》 SCIE CAS CSCD 2015年第3期164-172,共9页
Spinal cord injury(SCI)-induced bone loss represents the most severe osteoporosis with no effective treatment.Past animal studies have focused primarily on long bones at the acute stage using adolescent rodents. To ... Spinal cord injury(SCI)-induced bone loss represents the most severe osteoporosis with no effective treatment.Past animal studies have focused primarily on long bones at the acute stage using adolescent rodents. To mimic chronic SCI in human patients, we performed a comprehensive analysis of long-term structural and mechanical changes in axial and appendicular bones in adult rats after SCI. In this experiment, 4-month-old Fischer 344 male rats received a clinically relevant T13 contusion injury. Sixteen weeks later, sublesional femurs, tibiae,and L4 vertebrae, supralesional humeri, and blood were collected from these rats and additional non-surgery rats for micro-computed tomography(m CT), micro-finite element, histology, and serum biochemical analyses.At trabecular sites, extreme losses of bone structure and mechanical competence were detected in the metaphysis of sublesional long bones after SCI, while the subchondral part of the same bones showed much milder damage. Marked reductions in bone mass and strength were also observed in sublesional L4 vertebrae but not in supralesional humeri. At cortical sites, SCI induced structural and strength damage in both sub- and supralesional long bones. These changes were accompanied by diminished osteoblast number and activity and increased osteoclast number and activity. Taken together, our study revealed site-specific effects of SCI on bone and demonstrated sustained inhibition of bone formation and elevation of bone resorption at the chronic stage of SCI. 展开更多
关键词 SCI BONE A comprehensive study of long-term skeletal changes after spinal cord injury in adult rats
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Indigenous People’s Contribution to the Mitigation of Climate Variation, Their Perception, and Organizing Strategy for Sustainable Community Based Forest Resources Management in <i>Caraballo</i>Mountain, Philippines 被引量:3
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作者 Arneil G.Gabriel Teodora Luz S.Mangahas 《Open Journal of Ecology》 2017年第2期85-100,共16页
The focus of the study is to measure the level of awareness of Indigenous People on Climate Variation. It inquired into their observations and organizing strategy to cope with the early impacts of climate change on th... The focus of the study is to measure the level of awareness of Indigenous People on Climate Variation. It inquired into their observations and organizing strategy to cope with the early impacts of climate change on their socio-economic and cultural beliefs. The organization’s adaptation and mitigation practices to protect the environment are also discussed using as basis of analysis the multi-stakeholders framework of forest protection. The study documented and recognized the Indigenous Peoples contributions to the preservation and protection of forest resources in Caraballo mountain and a shift in paradigm to Indigenous People’s centered forest resources management is recommended. 展开更多
关键词 Indigenous People Community Based FOREST resources PARTICIPATORY FOREST Management Climate Change Case Study
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A Sensitivity Study of IAP AGCM to Radiation Changes: Climate Simulation of 125kyr and 115kyr before Present 被引量:1
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作者 王会军 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1993年第2期227-232,共6页
The IAP AGCM was used to simulate the climate of 125kyr and 115kyr before present. We analysed the results and then studied the sensitivity of the model to the changes of radiation distribution induced by orbital para... The IAP AGCM was used to simulate the climate of 125kyr and 115kyr before present. We analysed the results and then studied the sensitivity of the model to the changes of radiation distribution induced by orbital parameter changes. The reasonability of the results was also discussed. 展开更多
关键词 A Sensitivity Study of IAP AGCM to Radiation changes Climate Simulation of 125kyr and 115kyr before Present IAP
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A GRADIENT ANALYSIS & MODELING OF THE NECT FOR GLOBAL CHANGE STUDY 被引量:6
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作者 Zhang Xinshi et al.(Laboratory of Quantitative Vegetation Ecology, Institute of Botany, CAS) 《Bulletin of the Chinese Academy of Sciences》 1998年第1期15-21,共7页
The North East China Transect (NECT) is an exemplary region of landmass running along the line of 43°30′ North Latitude and caught between 112° and 130°30′ East Longtitude, and is being sampled by the... The North East China Transect (NECT) is an exemplary region of landmass running along the line of 43°30′ North Latitude and caught between 112° and 130°30′ East Longtitude, and is being sampled by the International Geosphere-Biosphere Program (IGBP) for today’s study on global change. So far, it has already been listed in the first set of IGBP-sponsored transects, becoming a key theatre and "hot spot" for probing terrestrial ecosystems. In terms of biota, the nearly 1,600-kilometre-long tract is located in a mid-latitude zone, featuring a vegetational transition from a temperate timberland of evergreen coniferous forests and broadleaved deciduous forests to a mild-temperate steppe. According to the norms of biome types, it consists of three subzones: meadow steppe, typical steppe and desert steppe in a continuous east-to-west spatial sequence. There are four ecological stations supported by a great number of permanent samples, long-term plots and an enormous build-up of experimental data along 展开更多
关键词 NECT A GRADIENT ANALYSIS MODELING of the NECT FOR GLOBAL CHANGE STUDY GCTE
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Lifestyle after Cardiac Rehabilitation: Did the Message Come across, and Was It Feasible? An Analysis of Patients’ Narratives
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作者 Marie Veje Knudsen Sussie Laustsen +1 位作者 Annemette Krintel Petersen Sanne Angel 《Health》 2014年第19期2641-2650,共10页
Lifestyle following heart disease is considered important to prevent and reduce cardiovascular risk factors. Thus, cardiac rehabilitation is focused on potential lifestyle changes. Further insight into patients’ pers... Lifestyle following heart disease is considered important to prevent and reduce cardiovascular risk factors. Thus, cardiac rehabilitation is focused on potential lifestyle changes. Further insight into patients’ perspective on lifestyle after cardiac rehabilitation is needed as changing habits following heart disease is a complex matter. The objective of this study was to explore the characteristics of lifestyle after cardiac rehabilitation. A phenomenological-hermeneutic approach with qualitative interviews was performed in 20 patients six months after completing a hospital-based cardiac rehabilitation programme in 2012 at Aarhus University Hospital, Denmark. The patients were diagnosed with ischemic heart disease, heart failure or left heart valve disease. The interviews were analysed using the interpretation theory by Ricoeur. The variation in reactions to cardiac rehabilitation were: 1) considering prior lifestyle to be appropriate, maybe with minor adjustments;2) acknowledging the need for incorporating lifestyle changes;and 3) reconciling or feeling guilt when being unable to manage changes. Participation in the cardiac rehabilitation programme was a positive experience, but it had minor influence on long-term adherence to recommended lifestyle. The important thing in establishing new routines was whether they aroused interest, and whether the experience of changes was perceived as necessary and manageable. In future cardiac rehabilitation, focusing on patients’ interests and supporting them in incorporating recommendations into their everyday life might be essential following heart disease, also after ending cardiac rehabilitation. 展开更多
关键词 CARDIAC Disease CARDIAC REHABILITATION LIFESTYLE Change Qualitative Study
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Drought Effects on Early Growth and Mortality of Three Oak Species in the Upper Rhine Valley
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作者 Sandrine Brèteau-Amores 《American Journal of Climate Change》 2018年第2期336-354,共19页
Pedunculate oak and sessile oak are important natural species in the Upper Rhine Valley. The increasing mortality of these oak species has been observed since the 1980s in this region, mainly due to severe droughts. T... Pedunculate oak and sessile oak are important natural species in the Upper Rhine Valley. The increasing mortality of these oak species has been observed since the 1980s in this region, mainly due to severe droughts. Turkey oak is known to be highly productive and drought-resistant. The goal of this article is therefore to investigate the adaptability to drought of these three young oak species growing at the same site, and to show to what extent Turkey oak can be substituted for these native oak species. Stand measurements and retrospective analyses of radial growth were performed within the framework of the eight-year-old “Mooswald” afforestation experiment in order to determine stand volume, mortality and resistance/resilience to drought for each species. Turkey oak shows significantly higher stand volume and significantly lower mortality than sessile oak. Values of these two parameters for Turkey oak and sessile oak are not significantly different from those of pedunculate oak. However, Turkey oak is not more resistant to drought than the other oak species. Sessile oak has the highest mortality and the smallest stand volume, while pedunculate oak is the least resilient to drought. These results are only a trend that must be confirmed in older stand stages and investigation in young stands must continue, supported by better monitoring and improved tools. 展开更多
关键词 Forest Climate Change Case Study TREE-RING Lloret Index
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Detecting Climate Change in Using Extreme Data from Two Surface Weather Stations: Case Study Valle of Comitan and La Esperanza, Chiapas, Mexico
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作者 Martín Mundo-Molina Eber A. Godinez-Gutiérrez +1 位作者 José Luis Pérez-Díaz Daniel Hernández-Cruz 《Journal of Water Resource and Protection》 2021年第12期1061-1075,共15页
The study area is located between the cities of Comitan (16&deg;10'43"N and 92&deg;04'20''W) a city with 150,000 inhabitants and La Esperanza (16&deg;9'15''N and 91&deg... The study area is located between the cities of Comitan (16&deg;10'43"N and 92&deg;04'20''W) a city with 150,000 inhabitants and La Esperanza (16&deg;9'15''N and 91&deg;52'5''W) a town with 3000 inhabitants. Both weather stations are 30 km from each other in the Chiapas State, México. 54 years of daily records of the series of maximum (<em>t</em><sub>max</sub>) and minimum temperatures (<em>t</em><sub>min</sub>) of the weather station 07205 Comitan that is on top of a house and 30 years of daily records of the weather station 07374 La Esperanza were analyzed. The objective is to analyze the evidence of climate change in the Comitan valley. 2.07% and 19.04% of missing data were filled, respectively, with the WS method. In order to verify homogeneity three methods were used: Standard Normal Homogeneity Test (SNHT), the Von Neumann method and the Buishand method. The heterogeneous series were homogenized using climatol. The trends of <em>t</em><sub>max</sub> and <em>t</em><sub>min</sub> for both weather stations were analyzed by simple linear regression, Sperman’s rho and Mann-Kendall tests. The Mann-Kendal test method confirmed the warming trend at the Comitan station for both variables with <em>Z<sub>MK</sub></em> statistic values equal to 1.57 (statistically not significant) and 4.64 (statistically significant). However, for the Esperanza station, it determined a cooling trend for tmin and a slight non-significant warming for <em>t</em><sub>max</sub> with a <em>Z</em><sub><em>MK</em></sub> statistic of -2.27 (statistically significant) and 1.16 (statistically not significant), for a significance level <em>α</em> = 0.05. 展开更多
关键词 Detecting Climate Change in Using Extreme Data from Two Surface Weather Stations: Case Study Valle of Comitan and La Esperanza CHIAPAS Mexico
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Numerical Study for Characteristic Change of Asian Summer Monsoon Circulation and Its Influence Mechanism during the EI Nino Period
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作者 倪允琪 林元弼 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1990年第3期320-330,共11页
In this paper, the relation between Asian summer monsoon circulation and sea surface temperature anomalies over equatorial central-eastern Pacific is investigated by using a global spectral model. This model has nine ... In this paper, the relation between Asian summer monsoon circulation and sea surface temperature anomalies over equatorial central-eastern Pacific is investigated by using a global spectral model. This model has nine layers in the vertical and the model variables are represented in the horizontal as truncated expansions of the surface spherical harmonics with rhomboidal truncation at wave number 15. The model involves comparatively complete physical processes and parameterizations with mountains.Using the above model, two experimental schemes are designed, namely control case and anomalous sea surface temperature case. The above two schemes are respectively integrated for forty days and the simulated results are obtained from the last 30-day averaged simulations.The simulations show that positive SST anomalies over equatorial central-eastern Pacific weakens Indian monsoon circulation,decreases precipitation in Indian sub-continent whereas it intensifies East Asian monsoon circulation and increases precipitation in East Asian area. All these results reflect the characteristics of Asian summer monsoon during the El Nino period. In this paper, SST anomalies over equatorial central-eastern Pacific have a direct influence on the intensity and position of subtropical high via the wave train over Northern Hemisphere, which is similar to that suggested by Nitta(1987) and the wave train over Southern Hemisphere has an influence on the intensity of Muscarene high and Australia high resulting in affecting cross equatorial flow. As a result, atmospheric interior heat sources and sinks are redistributed because of the change of cross equatorial flow. And the response of atmosphere to the new heat source and sink has a significant influence on Asian summer monsoon. 展开更多
关键词 Asia Numerical Study for Characteristic Change of Asian Summer Monsoon Circulation and Its Influence Mechanism during the EI Nino Period SSTA Nino EI
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Electrochemical Study on the Change in Valency of Niobium Oxide in the MnO-SiO_2-Nb_2O_5 System
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作者 Tan Zanlin Wei Shoukun University of Science and Technology Beijing 《Rare Metals》 SCIE EI CAS CSCD 1990年第1期1-4,共4页
Change in valency of Nb-oxide in MnO-SiO_2-Nb_2O_5 system was studied with the electrochemical method using ZrO_2 as the solid electrolyte.Thermodynamic analysis has shown that the only possible reaction that could ta... Change in valency of Nb-oxide in MnO-SiO_2-Nb_2O_5 system was studied with the electrochemical method using ZrO_2 as the solid electrolyte.Thermodynamic analysis has shown that the only possible reaction that could take place at the working elec- trode is:2(Nb_2O_5)=2(Nb_2O_4)+O_2 with the a_0 values experimentally evaluated,values of a Nb_2O:/a Nb_2O:were calculated and isoactivity-ratio curves drawn in MnO-SiO_2-Nb_2O_5 triangles at 1418 and 1585K.The simultaneous existence of tetra-and penta-valent Nb mineral constituents in industrial Nb-bearing slags was thus verified experimentally. 展开更多
关键词 Electrochemical Study on the Change in Valency of Niobium Oxide in the MnO-SiO2-Nb2O5 System SIO MNO
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