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  1. Article: Geomorphic analysis of active fold growth and landscape evolution in the central Qiulitage fold belt, southern Tian Shan, China

    Delcaillau, Bernard / Graveleau, Fabien / Carlier, Dimitri Saint / Rao, Gang / Le Béon, Maryline / Charreau, Julien / Nexer, Maelle

    Geomorphology. 2022 Feb. 01, v. 398

    2022  

    Abstract: ... associated with active thrust-related folding in the southern Tian Shan. Based on open-access DEMs and field ...

    Abstract The Qiulitage fold-and-thrust system in the Kuqa foreland is a prominent NE-SW trending relief associated with active thrust-related folding in the southern Tian Shan. Based on open-access DEMs and field work, we carried out a detailed geomorphologic analysis of the Qiulitage topography based on drainage network characteristics and several morphometric indices. Our results suggest that the Qiulitage fold belt is composed of six morphological units, which are statistically confirmed by a principal component analysis. These morphologic structures have interacted during both vertical growth and lateral propagation of the folds, associated with different patterns of fold connection and deformation partitioning. The structural evolution of the Qiulitage fold belt has significantly influenced major rivers crossing the fold belt and minor ones developing on the fold ridges. We finally propose a morphotectonic evolution of the fold belt integrating the influence of décollement distribution, deep inherited structures, and changes in shortening amount.
    Keywords deformation ; drainage ; landscapes ; morphometry ; principal component analysis ; topography ; China
    Language English
    Dates of publication 2022-0201
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 58028-4
    ISSN 0169-555X
    ISSN 0169-555X
    DOI 10.1016/j.geomorph.2021.108063
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Active normal faulting along the Seerteng Shan, North China

    Rao, G. / He, C. / Chen, P. / Wu, Z. / Hu, J. / Yao, Q.

    Journal of Asian Earth Sciences

    Geometry and kinematics

    2019  

    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Divide migration in response to asymmetric uplift: Insights from the Wula Shan horst, North China

    He, Chuanqi / Rao, Gang / Yang, Rong / Hu, Jianmin / Yao, Qi / Yang, Ci-Jian

    Geomorphology. 2019 Aug. 15, v. 339

    2019  

    Abstract: ... of the Wula Shan (Shan means ‘Mountain(s)’ in Chinese), a roughly west-east trending horst block bounded ... of the Wula Shan had migrated northward, which was probably caused by the decrease of asymmetry in vertical ...

    Abstract Drainage divides play significant roles in shaping landscapes. Nevertheless, they are not static through space and time. Previous numerical models have demonstrated divide motions in response to asymmetric tectonic uplift. However, natural examples that have nicely recorded these processes and hence could verify the results of numerical simulations are still lacking. In this contribution, we integrate the results of digital elevation models (DEMs)-based morphotectonic analysis with the tectonic landforms observed during field surveys to investigate the status of topography and probable drainage evolution history of the Wula Shan (Shan means ‘Mountain(s)’ in Chinese), a roughly west-east trending horst block bounded by normal faults in the Hetao Graben, North China. The results demonstrate that the differences of obtained geomorphic indices are significant between the southern and northern drainage basins; higher hypsometric integral (HI) and normalized channel steepness (ksn) values, and lower ratios of valley floor width to valley height (VF) indicate higher tectonic uplift rate at the southern flank. The main divide of the Wula Shan had migrated northward, which was probably caused by the decrease of asymmetry in vertical uplift associated with the margin faults. We suggest the results of this study may shed new light on divide mobility as well as landscape evolution in actively extending regions.
    Keywords asymmetry ; digital elevation models ; drainage ; landforms ; landscapes ; mathematical models ; space and time ; surveys ; tectonics ; topography ; watersheds ; China
    Language English
    Dates of publication 2019-0815
    Size p. 44-57.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 58028-4
    ISSN 0169-555X
    ISSN 0169-555X
    DOI 10.1016/j.geomorph.2019.04.024
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: The association between exposure and psychological health in earthquake survivors from the Longmen Shan Fault area: the mediating effect of risk perception.

    Xu, Jiuping / Dai, Jiuzhou / Rao, Renqiao / Xie, Huaidong

    BMC public health

    2016  Volume 16, Page(s) 417

    Abstract: ... on the exposure and psychological health in survivors from the Longmen Shan Fault area and the moderating effect ... A cross-sectional survey was conducted in a local Longmen Shan Fault area near the epicenter of the 2008 Wenchuan ... the characteristics of the Longmen Shan Fault area, a risk perception questionnaire was developed to evaluate survivor ...

    Abstract Background: In this study, exposure refers to survivors who suffered from life-changing situations, such as personal injuries, the deaths or injury of family members, relatives or friends or the loss of or damage to personal or family property, as a result of the earthquake. The mediating effect of risk perception on the exposure and psychological health in survivors from the Longmen Shan Fault area and the moderating effect of social support on the relationship between risk perception and psychological health were both examined.
    Method: A cross-sectional survey was conducted in a local Longmen Shan Fault area near the epicenter of the 2008 Wenchuan earthquake. The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), the standard Chinese 12-item Short Form (SF-12v2), and the Social Support Rating Scale (SSRS) were used to interview 2,080 earthquake survivors in the period one-year after the earthquake. Based on the environment and the characteristics of the Longmen Shan Fault area, a risk perception questionnaire was developed to evaluate survivor risk perception. Factor and regression analyses were conducted to determine the hypothetical relations.
    Results: The analyses provided effective support for the hypothesized model. Survivor risk perception was classified into direct risk perception and indirect risk perception. Survivor direct risk perception was found to play a partial mediating role in the relationship between exposure and the two domains (Physical component summary (PCS) and the Mental component summary (MCS)) of psychological health. Survivor indirect risk perception was found to have a only partial mediating effect on the association between exposure and MCS. Social support was found to moderate the influence of risk perception on psychological health.
    Conclusion: Risk communication should be considered in future post-earthquake psychological assistance programs and social support strategies could also be useful in improving psychological health.
    MeSH term(s) Adolescent ; Adult ; Aged ; China/epidemiology ; Cross-Sectional Studies ; Earthquakes ; Female ; Humans ; Male ; Mental Health ; Middle Aged ; Models, Theoretical ; Perception ; Regression Analysis ; Risk Factors ; Social Support ; Stress Disorders, Post-Traumatic/epidemiology ; Stress Disorders, Post-Traumatic/psychology ; Stress, Psychological/epidemiology ; Stress, Psychological/psychology ; Survivors/psychology ; Young Adult
    Language English
    Publishing date 2016-05-18
    Publishing country England
    Document type Journal Article
    ISSN 1471-2458
    ISSN (online) 1471-2458
    DOI 10.1186/s12889-016-2999-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Use of small unmanned aerial vehicle (sUAV)-acquired topography for identifying and characterizing active normal faults along the Seerteng Shan, North China

    Rao, Gang / He, Chuanqi / Chen, Hanlin / Yang, Xiaoping / Shi, Xuhua / Chen, Peng / Hu, Jianmin / Yao, Qi / Yang, Ci-Jian

    Geomorphology. 2020 June 15, v. 359

    2020  

    Abstract: High-resolution topographic datasets are being increasingly applied in studies of active tectonics for precise quantification of lateral and vertical offsets of landforms. Digital elevation models (DEM) acquired by airborne light detection and ranging ( ... ...

    Abstract High-resolution topographic datasets are being increasingly applied in studies of active tectonics for precise quantification of lateral and vertical offsets of landforms. Digital elevation models (DEM) acquired by airborne light detection and ranging (LiDAR) have also been used for morphological analysis of tectonic scarps to infer the seismic-slip history of active faults. However, the high cost of conducting LiDAR studies limits its widespread application. In contrast, the potential applicability of the low-cost and portable small unmanned aerial vehicles (sUAV) combined with structure-from-motion (SfM) techniques to investigate morphological features of fault-generated scarps and their paleoseismic implications has not been fully explored. Here, based on sUAV-acquired DEMs and field observations, we present a case study of the morphological features of fault scarps along the Seertengshan Piedmont Fault (SPF), a major boundary fault of the Hetao Graben, North China, and discuss their paleoseismic implications. The results demonstrate that low-angle (<25°) scarp slopes along the SPF suggestive of a long period of erosion are consistent with the results of paleoseismological studies (i.e., the most recent surface-faulting event occurred >2000 years ago). The observed 1.8–2.5-m-high fault scarps with single slope sections probably represent the most recent incremental displacements associated with surface-rupturing earthquake(s). Topographic data acquired by sUAV are suitable for quantitative morphological analyses of fault-generated scarps in actively deforming regions and can contribute to assessments of seismic hazard.
    Keywords case studies ; data collection ; digital elevation models ; earthquakes ; geophysics ; lidar ; piedmont ; tectonics ; topography ; unmanned aerial vehicles ; China
    Language English
    Dates of publication 2020-0615
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 58028-4
    ISSN 0169-555X
    ISSN 0169-555X
    DOI 10.1016/j.geomorph.2020.107168
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Use of small unmanned aerial vehicle (sUAV)-acquired topography for identifying and characterizing active normal faults along the Seerteng Shan, North China

    Rao, G. / He, C. / Chen, H. / Yang, X. / Shi, X. / Chen, P. / Hu, J. / Yao, Q. / Yang, C.

    Geomorphology

    2020  

    Abstract: High-resolution topographic datasets are being increasingly applied in studies of active tectonics for precise quantification of lateral and vertical offsets of landforms. Digital elevation models (DEM) acquired by airborne light detection and ranging ( ... ...

    Abstract High-resolution topographic datasets are being increasingly applied in studies of active tectonics for precise quantification of lateral and vertical offsets of landforms. Digital elevation models (DEM) acquired by airborne light detection and ranging (LiDAR) have also been used for morphological analysis of tectonic scarps to infer the seismic-slip history of active faults. However, the high cost of conducting LiDAR studies limits its widespread application. In contrast, the potential applicability of the low-cost and portable small unmanned aerial vehicles (sUAV) combined with structure-from-motion (SfM) techniques to investigate morphological features of fault-generated scarps and their paleoseismic implications has not been fully explored. Here, based on sUAV-acquired DEMs and field observations, we present a case study of the morphological features of fault scarps along the Seertengshan Piedmont Fault (SPF), a major boundary fault of the Hetao Graben, North China, and discuss their paleoseismic implications. The results demonstrate that low-angle (<25°) scarp slopes along the SPF suggestive of a long period of erosion are consistent with the results of paleoseismological studies (i.e., the most recent surface-faulting event occurred >2000 years ago). The observed 1.8–2.5-m-high fault scarps with single slope sections probably represent the most recent incremental displacements associated with surface-rupturing earthquake(s). Topographic data acquired by sUAV are suitable for quantitative morphological analyses of fault-generated scarps in actively deforming regions and can contribute to assessments of seismic hazard.
    Subject code 550
    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: The association between exposure and psychological health in earthquake survivors from the Longmen Shan Fault area

    Jiuping Xu / Jiuzhou Dai / Renqiao Rao / Huaidong Xie

    BMC Public Health, Vol 16, Iss 1, Pp 1-

    the mediating effect of risk perception

    2016  Volume 14

    Abstract: ... of risk perception on the exposure and psychological health in survivors from the Longmen Shan Fault area and ... both examined. Method A cross-sectional survey was conducted in a local Longmen Shan Fault area near ... Based on the environment and the characteristics of the Longmen Shan Fault area, a risk perception ...

    Abstract Abstract Background In this study, exposure refers to survivors who suffered from life-changing situations, such as personal injuries, the deaths or injury of family members, relatives or friends or the loss of or damage to personal or family property, as a result of the earthquake. The mediating effect of risk perception on the exposure and psychological health in survivors from the Longmen Shan Fault area and the moderating effect of social support on the relationship between risk perception and psychological health were both examined. Method A cross-sectional survey was conducted in a local Longmen Shan Fault area near the epicenter of the 2008 Wenchuan earthquake. The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), the standard Chinese 12-item Short Form (SF-12v2), and the Social Support Rating Scale (SSRS) were used to interview 2,080 earthquake survivors in the period one-year after the earthquake. Based on the environment and the characteristics of the Longmen Shan Fault area, a risk perception questionnaire was developed to evaluate survivor risk perception. Factor and regression analyses were conducted to determine the hypothetical relations. Results The analyses provided effective support for the hypothesized model. Survivor risk perception was classified into direct risk perception and indirect risk perception. Survivor direct risk perception was found to play a partial mediating role in the relationship between exposure and the two domains (Physical component summary (PCS) and the Mental component summary (MCS)) of psychological health. Survivor indirect risk perception was found to have a only partial mediating effect on the association between exposure and MCS. Social support was found to moderate the influence of risk perception on psychological health. Conclusion Risk communication should be considered in future post-earthquake psychological assistance programs and social support strategies could also be useful in improving psychological health.
    Keywords Exposure ; Psychological health ; Risk perception ; Post-earthquake ; Public aspects of medicine ; RA1-1270
    Subject code 300
    Language English
    Publishing date 2016-05-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Evaluation of the immunogenicity and safety of an indigenously developed DTwP-Hib tetravalent combination vaccine (Shan 4) with EasyFourTM in Indian infants administered per EPI schedule: a phase III trial.

    Dhingra, Mandeep S / Rao, Raman / Bhat, Swarnarekha / Joshi, Rajan / Kalra, Veena / Parikh, Harish R / Rao, S Narasimha / Sethi, G R / Shah, Nitin / Muzaffaruddin, M

    Human vaccines

    2010  Volume 6, Issue 7, Page(s) 572–577

    Abstract: ... combination vaccine (Shan 4) with EasyFour, the available DTwP-Hib vaccine in India. Overall 210 healthy infants, six ... to eight weeks of age, were randomized to receive three doses of either Shan 4 or EasyFour at 6, 10 and 14 ... vaccination 100% of the infants in Shan 4 and EasyFour groups had seroprotective concentrations of Anti PRP-T ...

    Abstract The study was planned to assess and compare immunogenicity and safety of an indigenous DTPw-Hib combination vaccine (Shan 4) with EasyFour, the available DTwP-Hib vaccine in India. Overall 210 healthy infants, six to eight weeks of age, were randomized to receive three doses of either Shan 4 or EasyFour at 6, 10 and 14 weeks of age. Antibodies were analyzed prior to and four to six weeks post third vaccine dose. Solicited and unsolicited local and systemic events in the follow up period after each dose were recorded. Post vaccination 100% of the infants in Shan 4 and EasyFour groups had seroprotective concentrations of Anti PRP-T IgG antibodies, IgG anti-diphtheria toxoid antibodies and IgG anti-tetanus toxoid antibodies. Following third dose of vaccination 86.99% subjects in the Shan 4 group and 73.85% subjects in the EasyFour group seroconverted for anti-pertussis antibody titres. Two Serious Adverse Events (SAE s) were reported during the course of the study, all unrelated to the respective vaccine administered. Most commonly reported adverse events in both the groups were pain at injection site, mild fever (<103°F) and minor swelling at injection site. The study proved that Shan 4 was safe and immunogenic compared to the available licensed vaccine.
    MeSH term(s) Antibodies, Bacterial/blood ; Diphtheria-Tetanus-Pertussis Vaccine/administration & dosage ; Diphtheria-Tetanus-Pertussis Vaccine/adverse effects ; Diphtheria-Tetanus-Pertussis Vaccine/immunology ; Edema/chemically induced ; Female ; Fever/chemically induced ; Haemophilus Vaccines/administration & dosage ; Haemophilus Vaccines/adverse effects ; Haemophilus Vaccines/immunology ; Humans ; Immunization, Secondary/methods ; India ; Infant ; Male ; Pain/chemically induced ; Vaccination/methods
    Chemical Substances Antibodies, Bacterial ; Diphtheria-Tetanus-Pertussis Vaccine ; Haemophilus Vaccines ; diphtheria-tetanus-pertussis-haemophilus b conjugate vaccine
    Language English
    Publishing date 2010-04-26
    Publishing country United States
    Document type Clinical Trial, Phase III ; Comparative Study ; Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ISSN 1554-8619
    ISSN (online) 1554-8619
    DOI 10.4161/hv.6.7.11817
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: A comparison of immunogenicity and safety of indigenously developed liquid (DTwPHB-Hib) pentavalent combination vaccine (Shan 5) with Easyfive (liq) and TritanrixHB + Hiberix (lyo) in Indian infants administered according to the EPI schedule.

    Rao, Raman / Dhingra, Mandeep S / Bavdekar, Sandeep / Behera, Narendra / Daga, Subhash R / Dutta, Ashok K / Kundu, Ritabrata / Maiya, Padmanabha / Mishra, Pravakar / Shah, Raju / Shuba, Sankaranarayan / Tibrewala, Vinoo / Pandhi, Shaloo / Rajamani, Arul Mani

    Human vaccines

    2009  Volume 5, Issue 6, Page(s) 425–429

    Abstract: ... Hib pentavalent liquid combination vaccine (Shan 5) with Easyfive and TritanrixHB+ Hiberix, the two ... of either Shan 5 or one of the two comparators. Antibody analysis was performed prior to and four to six weeks ... the study. Four to six weeks after third dose, 98.32% of the subjects in Shan 5 group had seroprotective ...

    Abstract The study was planned to assess and compare the immune response and safety of an indigenous DTPwHB-Hib pentavalent liquid combination vaccine (Shan 5) with Easyfive and TritanrixHB+ Hiberix, the two available pentavalent combination vaccines. Four hundred infants were randomized to receive three doses of either Shan 5 or one of the two comparators. Antibody analysis was performed prior to and four to six weeks post third vaccine dose. Solicited local and systemic events upto three days and unsolicited adverse events in the 30 days follow up period after each dose were recorded. A total of 365 subjects completed the study. Four to six weeks after third dose, 98.32% of the subjects in Shan 5 group had seroprotective Anti PRP-T IgG antibody concentrations (> or =0.15 microg/mL) as compared to 100% and 98.94% subjects in TritanrixHB + Hiberix and Easyfive groups respectively. Seroprotective levels for Anti-HBs (> or =10 mIU/mL) were observed in 97.77%, 97.83% and 98.94% subjects in Shan 5, TritanrixHB + Hiberix and Easyfive groups respectively. Comparable immune responses were observed for the three other components (D, T and P) in all the groups. Four Serious Adverse Events (SAEs) were reported (three with Shan 5 and one with Easyfive), all unrelated to the respective vaccines. Most commonly reported adverse events in all the groups were pain at injection site, mild fever (<103 degrees F) and minor swelling at injection site. The study proved that Shan 5 was safe and immunogenic compared to the two other licensed vaccines.
    MeSH term(s) Antibodies, Bacterial/blood ; Diphtheria-Tetanus-Pertussis Vaccine/adverse effects ; Diphtheria-Tetanus-Pertussis Vaccine/immunology ; Drug-Related Side Effects and Adverse Reactions ; Female ; Fever/chemically induced ; Haemophilus Vaccines/adverse effects ; Haemophilus Vaccines/immunology ; Hepatitis B Antibodies/blood ; Hepatitis B Vaccines/adverse effects ; Hepatitis B Vaccines/immunology ; Humans ; Immunization, Secondary/methods ; Immunoglobulin G/blood ; India ; Infant ; Male ; Pain/chemically induced ; Skin Diseases/chemically induced ; Skin Diseases/pathology
    Chemical Substances Antibodies, Bacterial ; Diphtheria-Tetanus-Pertussis Vaccine ; Haemophilus Vaccines ; Hepatitis B Antibodies ; Hepatitis B Vaccines ; Immunoglobulin G ; diphtheria-tetanus-acellular pertussis-Hib-hepatitis B vaccine
    Language English
    Publishing date 2009-06-12
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ISSN 1554-8619
    ISSN (online) 1554-8619
    DOI 10.4161/hv.5.6.7816
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: [Studies on chemical constituents of Peucedanum medium Dunn var. garcile Dunn ex Shan at Sheh].

    Huang, P / Zheng, X Z / Lai, M X / Rao, W Y / Nishi, M / Nakanishi, T

    Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

    2000  Volume 25, Issue 4, Page(s) 222–224

    Abstract: Objective: To study the chemical constitutents in Peucedanum medium var. gracile distributed in Guangxi.: Method: Chromatography and spectral analysis were used to isolated and elucidate the constituents.: Result: Eight compounds were isolated ... ...

    Abstract Objective: To study the chemical constitutents in Peucedanum medium var. gracile distributed in Guangxi.
    Method: Chromatography and spectral analysis were used to isolated and elucidate the constituents.
    Result: Eight compounds were isolated from the root of P. medium var. gracile and elucidated as isoimperatorin, phellopterin, bergapten, oxypeucedanin hydrate, byakangelicin beta-sitosterol, hamaudol and mannitol.
    Conclusion: Seven compounds were obtained from this plant for the first time.
    MeSH term(s) Apiaceae/chemistry ; Coumarins/chemistry ; Coumarins/isolation & purification ; Furocoumarins/chemistry ; Furocoumarins/isolation & purification ; Methoxsalen/analogs & derivatives ; Methoxsalen/chemistry ; Methoxsalen/isolation & purification ; Plants, Medicinal/chemistry
    Chemical Substances Coumarins ; Furocoumarins ; isoimperatorin (0ZMV066080) ; phellopterin (2543-94-4) ; 5-methoxypsoralen (4FVK84C92X) ; Methoxsalen (U4VJ29L7BQ)
    Language Chinese
    Publishing date 2000-04
    Publishing country China
    Document type Journal Article
    ZDB-ID 1004649-5
    ISSN 1001-5302 ; 0254-0029
    ISSN 1001-5302 ; 0254-0029
    Database MEDical Literature Analysis and Retrieval System OnLINE

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