期刊文献+
共找到941篇文章
< 1 2 48 >
每页显示 20 50 100
Medieval Art:Development,Significance,and Current Challenges of Mural Painted Churches With Gondarian Style
1
作者 Yetmgeta Alemneh 《Cultural and Religious Studies》 2025年第2期89-99,共11页
Paintings in Ethiopia have a long history.Ancient peoples of Ethiopia and others who had lived in caves developed a tradition of depicting animal motifs they domesticated and their daily activities.The growth of sacre... Paintings in Ethiopia have a long history.Ancient peoples of Ethiopia and others who had lived in caves developed a tradition of depicting animal motifs they domesticated and their daily activities.The growth of sacred painting in Ethiopia was a result of the introduction of Christianity in the 4th century AD.In addition the Ethiopian Orthodox Church approval of using paintings as a medium of teaching contributed for this development.Due to lack of evidences and insufficient researches conducted in the field little is known about ancient history of Ethiopian paintings.Most of the researches conducted focused on medieval period religious paintings and lately developed.The aim of this study is to investigate the development,significance,and challenges of churches with murals of the Gondarian painting style.The study was qualitative in approach and descriptive in design.In order to get valuable information for the study both primary and secondary sources were collected through interview,observation,and review of related literatures.And the data obtained through the above mentioned data gathering tools were analyzed qualitatively.The finding revealed that medieval period in Ethiopia witnessed the development of religious paintings mainly during the Gondarian period.Religious paintings of the period painted mainly on foundations of parchments,wall,and wood panel.Like other tourist attractions,wall paintings contributed a lot in attracting both domestic and international tourists.Due to several man-made and natural problems those wall paintings faced serious challenges which need an immediate intervention from the concerned bodies. 展开更多
关键词 ART Gondarian style MURAL significance challenge
在线阅读 下载PDF
Adjusting the significance of daily climate responses in tree-ring proxies
2
作者 Max C.A.Torbenson James H.Stagge +2 位作者 Feng Chen Emanuele Ziaco Jan Esper 《Journal of Forestry Research》 2025年第1期259-274,共16页
Correlating tree-ring parameters with daily resolved climate data is becoming increasingly common for understanding the complex relationships between tree growth and the surrounding environment.However,with an increas... Correlating tree-ring parameters with daily resolved climate data is becoming increasingly common for understanding the complex relationships between tree growth and the surrounding environment.However,with an increased number of calculated correlations,there is an inherent risk of spurious significance.In this study,we present an analysis using synthetic weather and tree-ring data mimicking the statistical properties of ten real-world sites across Europe to quantify the extent to which numerous comparisons may inflate maximum correlations.Comparisons of different tree-ring proxies,considering varying overlapping period lengths and seasons,revealed 95th percentile correlation differences reaching 0.25 by chance.Using synthetic tree-ring chronologies with an assigned non-signal(r=0.00),spurious correlations can reach statistical significance in over 60%of tests.Correlation inflation is greater when:(1)the climate-proxy relationship is weaker;(2)comparison periods are shorter;and(3)the length of seasonal windows is longer.Autocorrelation in the proxy records does not appear to have a major effect.These findings indicate that caution should be exercised when computing high numbers of correlations with limited observations.We provide tables listing correlation inflations for precipitation-and temperature-sensitive tree-ring chronologies that can inform interpretations of significance. 展开更多
关键词 DENDROCLIMATOLOGY Signal-noise Daily resolution significance Uncertainty
在线阅读 下载PDF
Expression significance of biomarker MORC4 in colorectal cancer patients and its relationship with pathological features and prognosis
3
作者 Li Wei Liang Wang +1 位作者 Ya-Gang Liu Li-Fei Gao 《World Journal of Gastrointestinal Oncology》 2025年第3期291-298,共8页
BACKGROUND Colorectal cancer(CRC)is one of the most common malignant gastrointestinal tumors worldwide,with high incidence and mortality rates.AIM To investigate the expression significance of the chromatin-remodeling... BACKGROUND Colorectal cancer(CRC)is one of the most common malignant gastrointestinal tumors worldwide,with high incidence and mortality rates.AIM To investigate the expression significance of the chromatin-remodeling protein MORC family CW-type zinc finger 4(MORC4)as a biomarker in CRC patients,and to explore its relationship with pathological features and prognosis.METHODS A total of 143 CRC specimens and 57 adjacent tissue specimens,surgically removed from our hospital between January 2020 and January 2021,were collected.MORC4 protein expression was assessed using immunohistochemistry after paraffin embedding.The relationship between MORC4 protein expression and clinicopathological characteristics of patients was analyzed.Kaplan-Meier survival curves were plotted to analyze the relationship between MORC4 protein expression and prognosis in CRC patients.RESULTS Compared with adjacent tissues,the expression rate of MORC4 protein in CRC tissues was significantly higher(P<0.05).No significant difference was observed in the high expression rate of MORC4 protein in CRC tissues among patients of different gender,age,tumor location,tumor diameter,and primary tumor status(P>0.05).However,significant differences were found in the high expression rate of MORC4 protein in patients with different degrees of differentiation,lymph node metastasis,distant metastasis,tumor-lymph node-metastasis stage,and serum carcinoembryonic antigen levels(P<0.05).Compared with patients with low MORC4 expression,patients with high MORC4 expression had a worse prognosis(P<0.05).CONCLUSION The upregulation of MORC4 expression in CRC patients is closely related to disease severity and prognosis,suggesting its potential as an evaluation biomarker,which warrants further investigation. 展开更多
关键词 Colorectal cancer BIOMARKER MORC family CW-type zinc finger 4 Expression significance Pathological features PROGNOSIS RELATIONSHIP
暂未订购
The Global Significance of Chinese Modernization:From an Economic Perspective
4
作者 Wu Xiaodan 《Contemporary World》 2025年第2期24-28,共5页
China is a major country with global influence.The sheer size of it determines that the complexity and difficulty of achieving modernization in China are unprecedented,and so are the significance and influence of Chin... China is a major country with global influence.The sheer size of it determines that the complexity and difficulty of achieving modernization in China are unprecedented,and so are the significance and influence of Chinese modernization.As the most grand-scale and unique innovation in human history,Chinese modernization indeed has comprehensive and profound significance for the world economy. 展开更多
关键词 world economy economic significance global influence MODERNIZATION China
在线阅读 下载PDF
Historical Basis,Theoretical Implication,and Practical Significance:A Three-Dimensional Analysis of Marx’s Thoughts on Clean Government
5
作者 Faying Ding Cong Liu +1 位作者 Qun Wang Gongxu Tan 《Journal of Contemporary Educational Research》 2025年第7期346-355,共10页
Marx scientifically summarized the experience and lessons of the Paris Commune,deeply exposed the root causes of bourgeois corruption,and emphasized the purity and advancement of the construction of proletarian politi... Marx scientifically summarized the experience and lessons of the Paris Commune,deeply exposed the root causes of bourgeois corruption,and emphasized the purity and advancement of the construction of proletarian political parties and political power.The dictatorship of the proletariat puts forward the ideas of cheap government that eradicate corruption,realizes that the people are the masters of the country,implements democratic supervision of elections,simplifies the construction of institutions,lowers governance costs,and achieves higher efficiency.A deep understanding of the theoretical characteristics of Marx’s thoughts on integrity,democracy,and honor,and a profound clarification of the practical significance of Marx’s ideology on clean governance,combined with practical practice,will help promote the construction of a new system of anti-corruption and incorruption in our country,and will benefit our contemporary services.The construction of a type-oriented government system is conducive to deepening the construction of China’s national legal system. 展开更多
关键词 Marx Thoughts on clean government Historical basis Theoretical implications significance
在线阅读 下载PDF
Analysis of the Complexity and Symbolic Significance of Lensky’s Character in Eugene Onegin
6
作者 Shiwei Liang 《Journal of Contemporary Educational Research》 2025年第3期67-72,共6页
The character of Lensky in Eugene Onegin is one of the most discussed figures in the novel.He is the friend of Eugene Onegin and represents a contradictory personality.In the novel,Lensky displays a complex set of cha... The character of Lensky in Eugene Onegin is one of the most discussed figures in the novel.He is the friend of Eugene Onegin and represents a contradictory personality.In the novel,Lensky displays a complex set of characteristics,appearing both elegant and noble on the outside,while concealing a deep inner loneliness and conflict.His attitude toward love and his dissatisfaction with society make him a dramatic and profound character in the story.By analyzing the character of Lensky,we can explore his role in the novel and his relationships with other characters.Lensky’s presence not only enriches the plot but also presents a figure filled with inner contradictions and emotional struggles.His friendship and rivalry with Eugene Onegin,as well as his admiration and helplessness in regard to Olga,showcase his complex inner world and reflections on life.Furthermore,the character of Lensky carries a certain symbolic significance.He can be seen as a metaphor for Russian society and culture at the time.His loneliness and inner conflict symbolize the limitations of Russian society and culture,while also reflecting Pushkin’s idealized pursuit of love and friendship,as well as his critical view of reality.In conclusion,through a deep analysis of Lensky’s character,we can better understand the portrayal of characters and the development of the plot in Eugene Onegin.It also provides readers with a perspective on Pushkin’s thoughts and observations on human nature,society,and culture. 展开更多
关键词 CHARACTER ANALYSIS PERSONALITY Symbolic significance
在线阅读 下载PDF
Phytochemical investigation of the branches of Viburnum awabuki K. Koch and its chemotaxonomic significance
7
作者 Sidie Li Ningning Du +2 位作者 Qi Song Xiaoxiao Huang Shaojiang Song 《Asian Journal of Traditional Medicines》 2025年第5期213-225,共13页
Phytochemical investigation of the branches of Viburnum awabuki K.Koch led to the isolation of thirteen known compounds,including five lignans(1-5),one phytosterol(6),two phenylpropanoids(7-8),one chromone derivative(... Phytochemical investigation of the branches of Viburnum awabuki K.Koch led to the isolation of thirteen known compounds,including five lignans(1-5),one phytosterol(6),two phenylpropanoids(7-8),one chromone derivative(9),three pentacyclic triterpenoids(10-12),and one glyceride(13).The structures of these compounds were elucidated through extensive spectroscopic analyses and comparison of experimental data with literature data.Additionally,the chemotaxonomic significance of the isolated secondary metabolites was also discussed. 展开更多
关键词 Viburnum awabuki spectroscopic analysis secondary metabolites chemotaxonomic significance
在线阅读 下载PDF
A Meta-Analysis of the Prognostic and Clinicopathological Significance of circZFR in Human Gastrointestinal Cancers 被引量:1
8
作者 Christian Cedric Bongolo Erick Thokerunga +1 位作者 Yu Zhang Jian-Cheng Tu 《International Journal of Clinical Medicine》 CAS 2024年第3期134-144,共11页
Background: Studies of gastrointestinal (GIT) cancers have shown that circZFR could be involved in the development and progression of various GIT cancers. However, small sample sizes limit the clinical significance of... Background: Studies of gastrointestinal (GIT) cancers have shown that circZFR could be involved in the development and progression of various GIT cancers. However, small sample sizes limit the clinical significance of these studies. Here, a meta-analysis was conducted to ascertain the actual involvement of circZFR in the development and prognosis of GIT cancers. Methods: PubMed, Embase, Web of Science, and the Cochrane Library were searched up to December 31, 2023. Hazard ratios (HRs) or odds ratios (ORs) with 95% confidence intervals (CIs) were pooled to evaluate the association between circZFR expression and overall survival (OS). Publication bias was measured using the funnel plot and Egger’s test. Results: 10 studies having 659 participants were enrolled for meta-analysis. High circZFR expression was associated with poor OS (HR = 1.4, 95% CI: 1.20, 1.70). High circZFR expression also predicted larger tumor size (OR = 4.38, 95% CI 2.65, 7.25), advanced clinical stage (OR = 5.33, 95% CI 3.10, 9.16), and tendency for distant metastasis (OR = 2.89, 95% CI: 1.62, 5.11), but was not related to age, gender, and histological grade. Conclusions: In summary, high circZFR expression was associated with poor OS, larger tumor size, advanced stage cancer and tendency for distant metastasis. These findings suggested that circZFR could be a prognostic marker for GIT cancers. 展开更多
关键词 CircZFR GASTROINTESTINAL PROGNOSTIC significance META-ANALYSIS
暂未订购
Genesis and geological significance of carbonate in Changdu Basin,Xizang,China:Constraints from geochemistry and C-O isotopes
9
作者 Wenhua Han Yongshou Li +4 位作者 Haizhou Ma Huaide Cheng Binkai Li Qinyu Hai Xuahai Ma 《Acta Geochimica》 EI CAS CSCD 2024年第6期1192-1204,共13页
Research on the origin of carbonates in Changdu Basin holds significant importance for understanding the regional potash formation model.Based on a comprehensive review of previous studies,field geological surveys,and... Research on the origin of carbonates in Changdu Basin holds significant importance for understanding the regional potash formation model.Based on a comprehensive review of previous studies,field geological surveys,and laboratory investigations,this study analyzes the origin and properties of carbonates within the context of regional potash formation.Petrographic studies show that magnesite deposits,with the characteristics of sedimentary origin.The results of elemental geochemical analysis show that the carbonates in this area were formed in the sedimentary environment via evaporation followed by concentration,and the formation of magnesite was possibly caused by the substitution of calcium in the dolomite with magnesium-rich brine.Theδ^(13)C values of carbonats in the study area are between5.9‰and 9.1‰.Theδ^(18)O values of magnesite samples range from-7.3‰to-1.3‰,and theδ^(18)O values of dolomites range from-10.3‰to-8.4‰.All the calculated Z values of oxygen isotopes of carbonates greater than 120.A comprehensive analysis of carbon and oxygen isotopes indicates that the magnesite was formed in a highly concentrated Marine sedimentary environment and does not show any relation with the metasomatism of hydrothermal fluids.The results on the correlation of magnesite with seawater and its sedimentary origin provide key information for explaining the migration direction of brine between the Changdu and Lanping-Simao Basins.The residual metamorphic seawater in the Changdu Basin migrated to the Lanping-Simao Basin,where potash underwent deposition.Whereas,magnesite and dolomite in the early stage of potash formation were left in the Changdu Basin. 展开更多
关键词 Changdu basin CARBONATITE GEOCHEMISTRY Mineral deposit genesis significance of potash formation
在线阅读 下载PDF
Three-dimensional structural models,evolution and petroleum geological significances of transtensional faults in the Ziyang area,central Sichuan Basin,SW China
10
作者 TIAN Fanglei GUO Tonglou +6 位作者 HE Dengfa GU Zhanyu MENG Xianwu WANG Renfu WANG Ying ZHANG Weikang LU Guo 《Petroleum Exploration and Development》 SCIE 2024年第3期604-620,共17页
With drilling and seismic data of Transtensional(strike-slip)Fault System in the Ziyang area of the central Sichuan Basin,SW China plane-section integrated structural interpretation,3-D fault framework model building,... With drilling and seismic data of Transtensional(strike-slip)Fault System in the Ziyang area of the central Sichuan Basin,SW China plane-section integrated structural interpretation,3-D fault framework model building,fault throw analyzing,and balanced profile restoration,it is pointed out that the transtensional fault system in the Ziyang 3-D seismic survey consists of the northeast-trending F_(I)19 and F_(I)20 fault zones dominated by extensional deformation,as well as 3 sets of northwest-trending en echelon normal faults experienced dextral shear deformation.Among them,the F_(I)19 and F_(I)20 fault zones cut through the Neoproterozoic to Lower Triassic Jialingjiang Formation,presenting a 3-D structure of an“S”-shaped ribbon.And before Permian and during the Early Triassic,the F_(I)19 and F_(I)20 fault zones underwent at least two periods of structural superimposition.Besides,the 3 sets of northwest-trending en echelon normal faults are composed of small normal faults arranged in pairs,with opposite dip directions and partially left-stepped arrangement.And before Permian,they had formed almost,restricting the eastward growth and propagation of the F_(I)19 fault zone.The F_(I)19 and F_(I)20 fault zones communicate multiple sets of source rocks and reservoirs from deep to shallow,and the timing of fault activity matches well with oil and gas generation peaks.If there were favorable Cambrian-Triassic sedimentary facies and reservoirs developing on the local anticlinal belts of both sides of the F_(I)19 and F_(I)20 fault zones,the major reservoirs in this area are expected to achieve breakthroughs in oil and gas exploration. 展开更多
关键词 transtensional(strike-slip)fault three-dimensional structural model structural evolution petroleum geological significance Ziyang area Sichuan Basin
在线阅读 下载PDF
Microscopic characteristics and geological significance of pyrite in shales of the Wufeng-Longmaxi formations,southeastern Chongqing,China
11
作者 Xiao Cai Wei Xia +6 位作者 Yuxia Liu Shunzhou Liao Lei Zhang Weixue Hu Li Liu Wei Li Fanwu Zeng 《Energy Geoscience》 EI 2024年第3期203-211,共9页
Shales of the Wufeng-Longmaxi formations in the basin-margin transition zone of southeastern Chongqing,China are characterized by high organic matter content and a significant presence of pyrite development.By examini... Shales of the Wufeng-Longmaxi formations in the basin-margin transition zone of southeastern Chongqing,China are characterized by high organic matter content and a significant presence of pyrite development.By examining numerous scanning electron microscope(SEM)images and considering the crystal and aggregate characteristics of minerals,we identified four types of pyrite in the study area:euhedral crystals,irregular aggregates,framboidal aggregates,and metasomatized organisms.Among these types,framboidal aggregates are the most prevalent.The formation mechanism of framboidal pyrite can be categorized into inorganic and organic origins.As inferred from the pyrite characteristics in the study area,the formation mechanism of the metasomatized organisms aligns with the biologically induced mineralization mode of organic origin,whereas the framboidal aggregates are more associated with the biologically controlled mineralization mode of organic origin.This underscores a close relationship between the pyrite formation and organic matter,which in turn indicates that an organic origin is more consistent with the pyrite characteristics observed in this study area.The pyrite morphology can reflect reactive iron concentration.Euhedral pyrite crystals tend to form under a low reactive iron concentration,whereas the formation of framboidal pyrite requires a high reactive iron concentration.Additionally,the type and grain size of pyrite aggregates can reflect variations in the redox conditions of the depositional environment.Pyrite produces positive effects on reservoir storage space,with intercrystalline organic pores,intercrystalline pores,and mold pores associated with pyrite contributing greatly to the storage spaces. 展开更多
关键词 Wufeng-Longmaxi formations SHALE PYRITE Microscopic characteristics Geological significance
在线阅读 下载PDF
Nomogram to predict gas-related complications during transoral endoscopic resection of upper gastrointestinal submucosal lesions:Clinical significance
12
作者 Xu-Peng Wen Qi-Quan Wan 《World Journal of Gastrointestinal Endoscopy》 2024年第1期5-10,共6页
Transoral endoscopic resections in treating upper gastrointestinal submucosal lesions have the advantages of maintaining the integrity of the gastrointestinal lumen,avoiding perforation and reducing gastrointestinal f... Transoral endoscopic resections in treating upper gastrointestinal submucosal lesions have the advantages of maintaining the integrity of the gastrointestinal lumen,avoiding perforation and reducing gastrointestinal fistulae.They are becoming more widely used in clinical practice,but,they may also present a variety of complications.Gas-related complications are one of the most common,which can be left untreated if the symptoms are mild,but in severe cases,they can lead to rapid changes in the respiratory and circulatory systems in a short period,which can be life-threatening.Therefore,it is important to predict the occurrence of gas-related complications early and take preventive measures actively.Based on the authors'results in the prepublication of the article“Nomogram to predict gas-related complications during transoral endoscopic resection of upper gastrointestinal submucosal lesions,”and in conjunction with our evaluation and additions to the relevant content,radiographs may help screen patients at high risk for gas-related complications.Controlling blood glucose levels,shortening the duration of surgery,and choosing the most appropriate surgical resection may positively impact the prognosis of patients at high risk for gas-related complications during transoral endoscopic resection of upper gastrointestinal submucosal lesions. 展开更多
关键词 COMPLICATIONS ENDOSCOPY Upper gastrointestinal tract NOMOGRAM Clinical significance
暂未订购
A Study on the Educational Significance Guidance Plan Value of the Jumong Myth Using STEAM
13
作者 Lee Eun-min 《Cultural and Religious Studies》 2024年第6期338-355,共18页
Jumong is a legendary figure in Korean mythology.He is depicted as a genius archer,a brilliant mind with horses,a god who rules the rivers and the sky.Jumong is a mythical character who is believed to be of divine des... Jumong is a legendary figure in Korean mythology.He is depicted as a genius archer,a brilliant mind with horses,a god who rules the rivers and the sky.Jumong is a mythical character who is believed to be of divine descent and to possess superhuman abilities that humans cannot match.The myth of Jumong is a very competitive content that can compete on a global scale.However,in order for it to be successful,it is necessary to be able to reinterpret our mythology to suit the times and reproduce it culturally.To this end,the realistic globalization of Korean classical literature should commence with the genre of Korean mythology.This paper presents the educational significance of the Jumong myth as a teaching-learning model,via STEAM(science,technology,engineering,arts,and mathematics),on the theme of Korean mythology.As we enter the era of artificial intelligence(AI)through the 4th Industrial Revolution,the most appropriate teaching and learning method,the convergence class,will provide an opportunity for students living in modern times to discover the cultural archetypes that allow them to recognise themselves as individuals and us as a collective,and to find the roots of the myth to positively renew their identity.Furthermore,it is my hope that they will rediscover and appreciate the representative work of Korean mythology,Gojomong,the eponymous story of Goguryeo. 展开更多
关键词 Jumong STEAM educational significance personal and reflective assessments organic complexes evaluate a collaborative activity(rubric)
在线阅读 下载PDF
Exploring the Significance and Implementation Strategies of Mental Health Education for College Students
14
作者 Chang Xu Xiaoyi Qu +1 位作者 Bining Yang Kaidi Wang 《Journal of Contemporary Educational Research》 2024年第2期1-7,共7页
College students are influenced by diverse cultures in the new era,thus their inner world is rich and changing rapidly.The acceleration of social rhythm can easily lead to different kinds of psychological problems.Men... College students are influenced by diverse cultures in the new era,thus their inner world is rich and changing rapidly.The acceleration of social rhythm can easily lead to different kinds of psychological problems.Mental health education is people-oriented,using scientific methods and means to train high-quality talents with all-round development across the world.A healthy psychological state can promote the sound development of students,make them establish correct core social values,and realize self-value.At present,there are some problems in university mental health education,such as single form and imperfect system.At the same time,college education plays an important role in the formation of ideas for college students’ideological values.As a front-line student worker,college counselors should cooperate with the school’s psychological departments to improve the college psychological education system,rationally plan the psychological teaching program,and pay attention to the college students’mental health education.The government should also take into account the need to ensure that the education system is not undermined by the lack of a comprehensive and effective education system. 展开更多
关键词 significance Mental health education DEVELOPMENT VALUES COUNSELORS
在线阅读 下载PDF
Analysis of the Significance of Key Points of Patient Interventional Psychological Care and Pain Care
15
作者 Xiaoping Dai Chu Luo Jiawei Dai 《Journal of Clinical and Nursing Research》 2024年第3期66-71,共6页
Interventional therapy has become increasingly popular in clinical practice due to advancements in medical technology.However,patients often experience psychological and physiological pressure due to its invasive natu... Interventional therapy has become increasingly popular in clinical practice due to advancements in medical technology.However,patients often experience psychological and physiological pressure due to its invasive nature.The management of patient discomfort and tension is crucial to ensure effective treatment.Psychological and pain management are essential components of interventional therapy,as they significantly impact patient recovery and prognosis.This article discussed the importance of interventional psychological and pain care for patients,starting with the development and spread of interventional therapy.The significance of providing high-quality nursing services to patients and improving their quality of life was also discussed. 展开更多
关键词 Interventional treatment Psychological nursing Pain care Key points significance analysis
暂未订购
Expression of CD151 in Gastric Cancer Tissues and Its Clinical Significance
16
作者 Chunhua Liu Dekuan Song +3 位作者 Xiaoying Gong Xin Hao Baokun Chang Bin Deng 《Proceedings of Anticancer Research》 2024年第1期17-22,共6页
Objective:To explore the expression of CD151 in gastric cancer tissues and its clinical significance.Methods:Immunohistochemistry was employed to detect the expression of CD151 in gastric cancer tissues and adjacent n... Objective:To explore the expression of CD151 in gastric cancer tissues and its clinical significance.Methods:Immunohistochemistry was employed to detect the expression of CD151 in gastric cancer tissues and adjacent normal tissues.The relationship between CD151 expression and the clinicopathological characteristics of gastric cancer was analyzed.Results:The expression of CD151 in gastric cancer tissues was significantly higher than in adjacent normal tissues(P<0.05).It was associated with the degree of differentiation,depth of invasion,lymph node metastasis,and TNM staging of gastric cancer.The survival time of patients with high CD151 expression was significantly shorter than that of those with low expression(P<0.05).Conclusion:High expression of CD151 in gastric cancer tissues is correlated with the malignant biological behavior of gastric cancer and can serve as an indicator for evaluating the prognosis of gastric cancer. 展开更多
关键词 Gastric cancer CD151 IMMUNOHISTOCHEMISTRY Clinical significance
暂未订购
Characteristics and hydrocarbon geological significances of paleo-bay in the fourth member of Middle Triassic Leikoupo Formation,western Sichuan Basin,SW China
17
作者 SONG Jinmin LIU Shugen +11 位作者 LI Zhiwu XIA Shun FENG Yuxiang YANG Di YE Yuehao SHAO Xingpeng WANG Bin WANG Jiarui JIN Xin REN Shan YANG Shaohai LUO Ping 《Petroleum Exploration and Development》 2024年第6期1492-1506,共15页
The depositional facies types of the fourth member of the Middle Triassic Leokoupo Formation(Lei-4 Member)in western Sichuan Basin are examined through the methods of sedimentology,lithology and analysis of well-loggi... The depositional facies types of the fourth member of the Middle Triassic Leokoupo Formation(Lei-4 Member)in western Sichuan Basin are examined through the methods of sedimentology,lithology and analysis of well-logging data,as well as the special lithofacies indicators such as microbialite,gypsum-salt rock and tempestites,using the data of about 400 wells and 11 outcrop sections.The distribution and evolution and its hydrocarbon geological significances of the bay facies have been discussed.The Lei-4 Member in western Sichuan Basin has an ocean–bay–flat depositional model,with the presence of evaporated tidal flat,restricted tidal flat and paleo-bay facies from east to west.The subfacies such as bay margin,subtidal bay and bay slope are recognized within the paleo-bay,with microbial reef and grain bank microfacies in the bay margin,microbial flat,deep-water spongy reef and hydrostatic mudstone microfacies in the subtidal bay,and tempestites and collapsed deposits in the upper bay slope.The bay boundary covered the Guangyuan-Zitong-Dujiangyan area in the period of the first submember of the Lei-4 Member(Lei-4-1)with falling sea level,regressed westward into the Shangsi-Jiangyou-Dujiangyan area in the period of Lei-4-2,and expanded to the Shangsi-Zitong-Langzhong-Wusheng-Yanting-Chengdu area in the northern part of central Sichuan Basin in the period of Lei-4-3 along with a small-scale transgression.The topographic pattern of“one high and two lows”is confirmed in the Lei-4 Member,corresponding to a configuration of source rocks and reservoir rocks alternated horizontally and superimposed vertically.Two efficient source-reservoir configuration models,i.e.side source&side reservoir,and self-generating&self-storing,are available with the microbial reef and grain bank reservoirs at the bay margin and the high-quality source rocks within the sags on both sides of the bay.The research findings will inevitably open up a new situation for the hydrocarbon exploration in the Leikoupo Formation. 展开更多
关键词 Sichuan Basin western Sichuan Basin Middle Triassic Leikoupo Formation ocean–bay–flat depositional model paleo-bay hydrocarbon geological significance
在线阅读 下载PDF
Flower morphology of Allium(Amaryllidaceae)and its systematic significance
18
作者 Ju Eun Jang Shukherdorj Baasanmunkh +5 位作者 Nudkhuu Nyamgerel Seung-Yoon Oh Jun-Ho Song Ziyoviddin Yusupov Komijlon Tojibaev Hyeok Jae Choi 《Plant Diversity》 SCIE CAS CSCD 2024年第1期3-27,共25页
Allium is a complicated genus that includes approximately 1000 species.Although its morphology is well studied,the taxonomic importance of many morphological traits,including floral traits,are poorly understood.Here,w... Allium is a complicated genus that includes approximately 1000 species.Although its morphology is well studied,the taxonomic importance of many morphological traits,including floral traits,are poorly understood.Here,we examined and measured the floral characteristics of 87 accessions of 74 Allium taxa(belonging to 30 sections and nine subgenera)from Central to Eastern Asian countries.We then examined the taxonomic relationships between select flower characteristics and a phylogenetic tree based on ITS sequences.Our results confirm that floral morphology provides key taxonomic information to assess species delimitation in Allium.We found that perianth color is an important characteristic within the subg.Melanocrommyum,Polyprason,and Reticulatobulbosa.In subg.Allium,Cepa,and Rhizirideum,significant characteristics include ovary shape,perianth shape,and inner tepal apex.For species in subg.Angunium,the key taxonomic character is ovule number(only one ovule in per locule).In the subg.Allium,Cepa,Polyprason,and Reticulatobulbosa,which belong to the third evolutionary line of Allium,hood-like appendages occur in the ovary,although these do not occur in subg.Rhizirideum.Our results also indicated that the flower morphology of several species in some sections are not clearly distinguished,e.g.,sect.Sacculiferum(subg.Cepa)and sect.Tenuissima(subg.Rhizirideum).This study provides detailed photographs and descriptions of floral characteristics and information on general distributions,habitats,and phenology of the studied taxa. 展开更多
关键词 ALLIUM Flower morphology Pistil character Statistical analysis Significant characteristic Species level
在线阅读 下载PDF
Pollen Morphology and Ecological Significance of Nine Hygrophyte Species at Sevenstar Lake Area in the Bashang Area of Hebei Province
19
作者 阳小兰 张茹春 +1 位作者 蒋红军 王瑞君 《Agricultural Science & Technology》 CAS 2013年第7期962-965,共4页
ObjectiveThis study aimed to investigate the morphological characteristics of pollen from nine hygrophyte species at Sevenstar Lake area in the Bashang Area (the southern edge of Inner Mongolian Plateau) of Hebei Pr... ObjectiveThis study aimed to investigate the morphological characteristics of pollen from nine hygrophyte species at Sevenstar Lake area in the Bashang Area (the southern edge of Inner Mongolian Plateau) of Hebei Province, as well as their ecological significance. MethodThe pollen morphology of nine hygrophyte species distributed at Seven Star Lake area was observed and studied by using an optical microscope, and morphological characteristics like size, shape, surface ornamentation were recorded. ResultsPollen grains were globose, subglobose prolate spheroidal; germination aperture had five types, namely, 3-groove, 6-groove, 3 (4)-groove, 3-colporate, 3 (4)-colporate; ektexine possessed four kinds of ornamentation: reticulate, striped, spiny, granular. Meanwhile, the environmental indication significance of these nine hygrophyte species was also discussed according to their habitats, origin and distribution. ConclusionThe study provides the basis of modern palynology for the study of ancient environment, ancient vegetation and paleoclimate. 展开更多
关键词 POLLEN Morphological characteristics Ecological significance
在线阅读 下载PDF
Development and Significance of Cave Dwelling Resort on the Loess Plateau
20
作者 李明 孙庆珍 《Journal of Landscape Research》 2011年第5期92-95,99,共5页
Relevant ecotourism theories were applied to further investigate the mushrooming cave dwelling resorts on the Loess Plateau.By introducing the present development of cave dwelling settlements in the study area,types o... Relevant ecotourism theories were applied to further investigate the mushrooming cave dwelling resorts on the Loess Plateau.By introducing the present development of cave dwelling settlements in the study area,types of cave dwelling resort was summarized:historic cave dwelling resort based on high cultural value,artistic value and aesthetic value;cave dwelling resort characterized by primitive folk customs;cave hotel showing folk house features of the Loess Plateau.Luochuan Resort of the Loess Folk Customs,Miaoshang Resort of Sanmenxia,Stone Cave Hotel of Yangjialing in Yan'an were respectively studied to analyze features and development conditions of cave dwelling resort,on the basis of which development principles and countermeasures were discussed.The orientation of cave dwelling resort on the Loess Plateau should be determined first,sustainability and accountability of ecotourism should be followed.Finally,the significance of cave dwelling resort for promoting local economic development,enhancing the rational utilization of natural resources,protecting and developing traditional settlements of cave dwellings was given. 展开更多
关键词 CAVE DWELLING RESORT ECOTOURISM significance
在线阅读 下载PDF
上一页 1 2 48 下一页 到第
使用帮助 返回顶部