The Tianshan Orogen(TO)is one of the largest typical accretionary orogenic belts in the world.Of which,the late Paleozoic was a critical era to understand the tectonic and geodynamic transition from accretion to colli...The Tianshan Orogen(TO)is one of the largest typical accretionary orogenic belts in the world.Of which,the late Paleozoic was a critical era to understand the tectonic and geodynamic transition from accretion to collision.However,the late Paleozoic tectonic evolutionary history,especially for the time of the ocean-continent transition,is still debated although the origin and tectonic settings for the Paleozoic volcanic,felsic igneous magmatism in TO and reginal geology have been done in the last decades.In contrast,the researches on the mafic dykes in TO was not systematically carried out till now.Reginal-scale mafic dykes are commonly regarded as the products created in a extensional setting,and used to identify the major tectonic events such as rifting and continental break-up and further trace the mantle natures and geodynamic mechanism(Halls,1982;Bleeker and Ernst,2006;Li et al.,2008;Ernst et al.,2010;Srivastava,2011;Hou,2012;Peng,2015;Peng et al.,2019).There are widespread late Paleozoic mafic dykes beside the huge of intermediate-acid igneous rocks in the TO,being an idea object to reveal the extensional events,tectonic evolution and the mantle nature and geodynamic processes.We present the ICPMS in situ zircon U–Pb dating,Lu-Hf and whole-rock Sr-Nd isotopes as well as the geochemistry data for these mafic dykes to better constraint their petrogenesis and mantle nature.New zircon U-Pb dating for 12 samples from the representative basic dykes and basalts yield three distinct stages of^332 Ma,316–302 Ma and 288–282 Ma,respectively.In which,the first stage of mafic dykes is mainly occurred in both East Tianshan Orogen(ETO)and West Tianshan Orogen(WTO),and composed of dolerite with minor basalts.The second stage of mafic dyke also can be found in both ETO and WTO.However,in contrast to the first stage of mafic dykes,they have relatively variable rock types from the dolerite/or gabbros to gabbroic diorite.The third stage of mafic dykes are slightly intermediate in composition,and chiefly consist of andesitic-basaltic dolerite with some diorites.They are widely developed not only in both ETO and WTO,but also in the Beishan area to the east of the ETO,indicating a large-scale mafic magmatism in Tianshan and adjacent areas.展开更多
Dysmenorrhea is a common gynecological condition that is further divided into two categories, namely primary and secondary dysmenorrhea. Traditional Chinese Medicine(TCM) gives good clinical results for the treatment ...Dysmenorrhea is a common gynecological condition that is further divided into two categories, namely primary and secondary dysmenorrhea. Traditional Chinese Medicine(TCM) gives good clinical results for the treatment of dysmenorrhea based on the basic principles of holistic view and syndrome differentiation. However, presently, the clinical practice guidelines in TCM for dysmenorrhea treatment are required. The guideline is formulated in strict accordance with the principles of evidence-based medicine with reference to the General Principles for the Compilation of International Guidelines for Diagnosis and Treatment of Traditional Chinese Medicine Syndromes and General Principles for the Compilation of International Clinical Practice Guidelines for Traditional Chinese Medicine Diseases and accordance with the principles and methods of The Appraisal of Guidelines for Research and Evaluation in China(AGREE-China) and World Health Organization guidelines. This guideline includes clinical issues by literature search and questionnaire survey, and eight background questions and 23 prospect questions were finally created. Based on the evidence retrieval, synthesis, consideration of patient preferences and values, intervention costs, advantages, and disadvantages, recommendations are created using the Delphi method and expert consensus method. This guideline clarified the definition, diagnosis, and TCM syndrome classification for dysmenorrhea, and recommends different TCM treatments based on the level of evidence, including Chinese herbal medicine, Chinese patent medicine, acupuncture, and other auxiliary therapies. The present guideline is an international clinical practice guideline for the treatment of dysmenorrhea using TCM. This guideline will provide substantive evidence and standardized guidance for the treatment of dysmenorrhea using TCM, improve the quality and safety of medical services, and standardize diagnosis and treatment plans for dysmenorrhea.展开更多
基金co-funded by the Land and Resources Survey Project of China(Grant no.12120113042200)National Natural Science Foundation of China(41421002)the MOST Special Fund from State Key Laboratory of Continental Dynamics,Northwest University(201210133)
文摘The Tianshan Orogen(TO)is one of the largest typical accretionary orogenic belts in the world.Of which,the late Paleozoic was a critical era to understand the tectonic and geodynamic transition from accretion to collision.However,the late Paleozoic tectonic evolutionary history,especially for the time of the ocean-continent transition,is still debated although the origin and tectonic settings for the Paleozoic volcanic,felsic igneous magmatism in TO and reginal geology have been done in the last decades.In contrast,the researches on the mafic dykes in TO was not systematically carried out till now.Reginal-scale mafic dykes are commonly regarded as the products created in a extensional setting,and used to identify the major tectonic events such as rifting and continental break-up and further trace the mantle natures and geodynamic mechanism(Halls,1982;Bleeker and Ernst,2006;Li et al.,2008;Ernst et al.,2010;Srivastava,2011;Hou,2012;Peng,2015;Peng et al.,2019).There are widespread late Paleozoic mafic dykes beside the huge of intermediate-acid igneous rocks in the TO,being an idea object to reveal the extensional events,tectonic evolution and the mantle nature and geodynamic processes.We present the ICPMS in situ zircon U–Pb dating,Lu-Hf and whole-rock Sr-Nd isotopes as well as the geochemistry data for these mafic dykes to better constraint their petrogenesis and mantle nature.New zircon U-Pb dating for 12 samples from the representative basic dykes and basalts yield three distinct stages of^332 Ma,316–302 Ma and 288–282 Ma,respectively.In which,the first stage of mafic dykes is mainly occurred in both East Tianshan Orogen(ETO)and West Tianshan Orogen(WTO),and composed of dolerite with minor basalts.The second stage of mafic dyke also can be found in both ETO and WTO.However,in contrast to the first stage of mafic dykes,they have relatively variable rock types from the dolerite/or gabbros to gabbroic diorite.The third stage of mafic dykes are slightly intermediate in composition,and chiefly consist of andesitic-basaltic dolerite with some diorites.They are widely developed not only in both ETO and WTO,but also in the Beishan area to the east of the ETO,indicating a large-scale mafic magmatism in Tianshan and adjacent areas.
基金National Key R&D Program of China:Research on the Development and Evaluation of International Standards for Traditional Chinese Medicine (No. 2019YFC1712000)。
文摘Dysmenorrhea is a common gynecological condition that is further divided into two categories, namely primary and secondary dysmenorrhea. Traditional Chinese Medicine(TCM) gives good clinical results for the treatment of dysmenorrhea based on the basic principles of holistic view and syndrome differentiation. However, presently, the clinical practice guidelines in TCM for dysmenorrhea treatment are required. The guideline is formulated in strict accordance with the principles of evidence-based medicine with reference to the General Principles for the Compilation of International Guidelines for Diagnosis and Treatment of Traditional Chinese Medicine Syndromes and General Principles for the Compilation of International Clinical Practice Guidelines for Traditional Chinese Medicine Diseases and accordance with the principles and methods of The Appraisal of Guidelines for Research and Evaluation in China(AGREE-China) and World Health Organization guidelines. This guideline includes clinical issues by literature search and questionnaire survey, and eight background questions and 23 prospect questions were finally created. Based on the evidence retrieval, synthesis, consideration of patient preferences and values, intervention costs, advantages, and disadvantages, recommendations are created using the Delphi method and expert consensus method. This guideline clarified the definition, diagnosis, and TCM syndrome classification for dysmenorrhea, and recommends different TCM treatments based on the level of evidence, including Chinese herbal medicine, Chinese patent medicine, acupuncture, and other auxiliary therapies. The present guideline is an international clinical practice guideline for the treatment of dysmenorrhea using TCM. This guideline will provide substantive evidence and standardized guidance for the treatment of dysmenorrhea using TCM, improve the quality and safety of medical services, and standardize diagnosis and treatment plans for dysmenorrhea.
