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A Comparative Analysis of Evaporate Sediments on Earth and Mars: Implications for the Climate Change on Mars

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Acta Geologica Sinica(English Edition) 2013年第3期87卷 885-897页

作者： ZHENG Mianping KONG Weigang ZHANG Xuefei chen wenxi KONG Fanjing MLR Key Laboratory of Saline Lake Resources and Environments Institute of Mineral Resources CAGS

The knowledge of Martian salts has gone through substantial changes during the past decades. In the 70th of last century, Viking landers have noticed the existence of salts on Mars. Several salt species have been suggested from then on, such as sulfates and chlorides. However, their origin was a mystery due to the lack of observations. The recent explorations and related studies at the beginning of this century revealed that the crustal composition of Mars is similar to that of Earth, and it was hypothesized that almost one third of Martian surface was covered by oceans and lakes in the early stage of Mars. The huge water bodies may have dissolved a large quantity of ions from Martian primary rocks during the whole Noachian and Hesperian epoch. After the enormous drought event happened during the late Hesperian and the early Amazonian, these dissolved ions have formed huge salts deposits and most of them were preserved on Mars until today. To date, carbonates, sulfates, chlorides have all been detected by orbital remote sensing and by landers and rovers. However, the salt mineral assemblages on Mars seems to have some differences from those on Earth, e.g., rich in sulfates and lack of massive carbonates. To explain this difference, we propose that most of the surface carbonates precipitated from the ancient oceans may have been dissolved by the later ubiquitous acidic fluids originated from the global volcanism in the Hesperian era, and formed the enormous sulfate deposits as detected, and this hypothesis seems to be supported by the evidence that most of the sulfate deposits distribute around the Tharsis volcanic province while the survived carbonates located far from it. This process can release most of the carbon on Mars to the atmosphere in the form of CO2 and then be erased by the late heavy bombardments, which might have profound influence on the climate change happened in the Hesperian age. The positive correlation between the GRS results of the potassium dis

关键词： Mars evaporate sediments comparative analysis climate change potassium salts deposition

Chronology and geochemistry of the volcanic rocks in Woruo Mountain region,Northern Qiangtang depression:Implications to the Late Triassic volcanic-sedimentary events

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Science China Earth Sciences 2008年第2期51卷 194-205页

作者： WANG Jian FU XiuGen chen wenxi WANG ZhengJiang TAN FuWen chen Ming ZHUO JieWen chengdu Institute of Geology and Mineral Resources Chengdu 610082China Graduate Department of Chinese Academy of Geological Sciences Beijing 100037China

A suite of sedimentary-volcaniclastic rocks intercalated with the volcanic rocks unconformably overlies the Triassic Xiaochaka Formation in the Woruo Mountain region, Qiangtang Basin, northern Tibet. The vitric tuff from the base of these strata gives a SHRIMP zircon U-Pb age of 216 ± 4.5 Ma, which represents the age of the Late Triassic volcanic-sedimentary events in the Woruo Mountain region, and is consistent with that of the formation of the volcanic rocks from the Nadi Kangri Formation in the Nadigangri-Shishui River zone. There is a striking similarity in geochemical signatures of the volcanic rocks from the Woruo Mountain region and its adjacent Nadigangri-Shishui River zone, indicating that all the volcanic rocks from the Qiangtang region might have the same magmatic source and similar tectonic setting during the Late Triassic. The proper recognition of the Late Triassic large-scale volcanic eruption and volcanic-sedimentary events has important implications for the interpretation of the Late Triassic biotic extinction, climatic changes and regressive events in the eastern Tethyan domain, as well as the understanding of the initiation and nature, and sedimentary features of the Qiangtang Basin during the Late Triassic-Jurassic.

关键词： Nadi Kangri Formation volcanic rocks zircon U-Pb age geochemistry volcanic-sedimentary events Qiangtang Basin in northern Tibet

Efficacy of Chaihu Jisang decoction on post-infection cough and its effect on cough reflex sensitivity

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Journal of Traditional Chinese Medicine 2018年第4期38卷 610-617页

作者： Hong Minli Huang Baopei Hong Chunlin chen Huinuan chen wenxi Liu Chaohui Li Xinjian Li Candong Traditional Chinese Medicine Syndrome Research Institution Fujian University of Traditional Chinese Medicine Department of Respiratory Medicine Zhangzhou Affiliated Traditional Chinese Medicine Hospital of Fujian University of Traditional Chinese Medicine Department of Respiratory Medicine Fujian Province Zhangping Municipal Hospital Clinical laboratory Zhangzhou Affiliated Traditional Chinese Medicine Hospital of Fujian University of Traditional Chinese Medicine Orthopedics Department of Traditional Chinese Medicine Beijing Sports University Hospital

OBJECTIVE:To investigate the efficacy of Chaihu Ji Sang Decoction(CJSD),(a modification of Xiao Chaihu Tang(Minor Decoction of Bupleurum) was evaluated in patients with post-infection cough(PIC).Its effect on cough reflex sensitivity(CRS) was also ***:One hundred and eighteen patients with PIC were enrolled and randomly divided into an experimental group and control group(54 patients in each group).The experimental group was given CJSD orally,and the control group was given cetirizine hydrochloride for 7 *** symptom scores and TCM symptom scores were compared before and after ***,cough onset time,recurrence,and adverse drug reactions were additionally ***,CRS was evaluated before and after treatment of PIC patients in the experimental ***:Fifty-two patients in the experimental group and fifty control patients completed the *** symptom scores and the TCM symptom scores of the two groups were significantly improved after treatment,however cough symptoms in the experimental group 1(0,2) were significantly lower than the control group 2(1,2) after treatment(P < 0.05).Similarly,TCM symptom scores 4(0,7) in the experimental group were significantly lower than the control group 6(3,12)(P < 0.01).Overall,the effective rate of the experimental treatment(84.60%) was significantly higher than that of the control treatment(68.00%)(P < 0.01).The onset time of efficacy of the experimental treatment was one day faster than the control treatment [2(2,3) d vs 3(2,3) d,P < 0.01].The relapse rate in the experimental group(9.09%) was lower than that of the control group(29.41%)(P < 0.05).39 PIC patients in the experimental group completed a capsaicin cough challenge test before *** lgC2 and lg C5 of the experimental group prior to treatment was 1.19(0.59,1.49) and 1.80(1.49,2.10),*** lgC2,lg C5 of the healthy control group was 1.49(0.89,2.40) and 2.70(2.40,3.00),*** differences in lgC2

关键词： Post-infection cough Chaihu Jisang decoction Efficacy Cough reflex sensitivity Capsaicin cough challenge test

Regional Distribution and Prospects of Potash in China

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Acta Geologica Sinica(English Edition) 2011年第1期85卷 17-50页

作者： ZHENG Mianping ZHANG Yongsheng YUAN Heran LIU Xifang chen wenxi LI Jinsuo R＆D Center for Saline Lake and Epithermal Deposit Chinese Academy of Geological Sciences Key Laboratory of Saline Lake Resources and Environment Ministry of Land and Resources Beijing 100037

China was formed by amalgamation of several small continental blocks （cratons）, micro, blocks and orogenic belts in different paleoclimatic settings. It may be correlated with other continental blocks but has its own specific characteristics; therefore the tectonic environments of China＇s marine and continental saline basins and salt, and potash, forming environment have some specific characteristics： multiple phases of salt formation, difference in salt, forming ages, migration and concentration of salt, forming processes and diversity of component materials, as well as small sizes of marine saline basins and great changes of saline basins in the late stage and occurrence of abundant liquid mineral resources. The nature of the tectonic basement exerted a key controlling effect on the formation of potash basins. The stable tectonic region was favorable for potash concentration in a quasi, stable region, and quasi, and the quasi-stable region was favorable for salt concentration and potash formation in a local stable tectonic region. Most China＇s major ancient saline basins occur in ＂quasi, cratons （continental block）＂; especially all the marine saline basins occur in continental blocks with the Precambrian basement. These regions are the key ones for potash search. Most relatively large, scale soluble salt deposits are developed in relatively stable continental nuclei. According to the characteristics of the tectonic domains where China＇s salt, forming basins are located, the North China, Yangtze and Tarim, Qaidam salt minerogenetic domains and the northern Qiangtang, western Yunnan salt minerogenetic belt may be distinguished. Their salt and potash prospects will be discussed separately.

关键词： regional analysis of potash structural basement-controlled potash formation specific saltand potash-forming characteristics salt minerogenetic domain potash prospects

Travertines in Dogai Coring Area of Tibet,China:Carbon,Oxygen and Strontium Isotopic Characteristics and Genetic Mechanism

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 238-239页

作者： NIU Xinsheng LIU Xifang chen wenxi Institute of Mineral Resources Chinese Academy of Geological Sciences Key Laboratory of Saline Lake Resources and Environment Ministry of Land and Resources

1 Introduction Dogai Coring is a name of lake lied in the northern *** are a series of modern salt springs and theies *** of salt springs have an anomaly of potassium,implying that springs water may dissolve evaporite... 详细信息

关键词： Travertine springs isotope REE Tibet

Origin of boron in the Damxung Co Salt Lake(central Tibet):Evidence from boron geochemistry and isotopes

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 151-152页

作者： Lü Yuanyuan ZHENG Mianping chen wenxi ZHANG Xuefei LIU Xifang WU Qian YU Jiangjiang MLR Key Laboratory of Saline Lake Resources and Environments Institute of Mineral ResourcesCAGS

The origin of boron in boron-rich salt lakes in the Tibetan Plateau has long been the subject of *** Damzung Co Salt Lake in central Tibet has high boron concentrations(B=276–313 mg/L)and is an ideal site for

关键词： Boron geochemistry Origin Quaternary deposits Damxung Co Salt Lake Tibet

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全面抗战初期福建征属优待机制的构建与调适

抗日战争研究 2024年第4期 120-129,M0004页

作者：陈文希中国人民大学清史研究所

全面抗战爆发后,国民政府为鼓舞军民士气,紧急制定优待政策,欲给予贫困征属基本生活保障。福建省军管区司令部循令制定优待细则,敦促各县市成立出征抗敌军人家属优待委员会,统筹相关事宜,具体政策的落实交由保甲长负责,逐步建成征属优... 详细信息

全面抗战爆发后,国民政府为鼓舞军民士气,紧急制定优待政策,欲给予贫困征属基本生活保障。福建省军管区司令部循令制定优待细则,敦促各县市成立出征抗敌军人家属优待委员会,统筹相关事宜,具体政策的落实交由保甲长负责,逐步建成征属优待机制。然而,作为战时体制的一环,征属优待机制与地方行政体系凿枘不投,虽经反复调适,仍难破解效能不佳的困境,仅能给予征属有限的帮助。

关键词：抗日战争福建战争动员征属优待优待委员会

MIDRIB AND LEDGE OF BAINITE IN A Cu-Zn-Al-Mn ALLOY

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Acta Metallurgica Sinica(English Letters) 1990年第5期3卷 307-311页

作者： HAN Ming chen Fumin chen Jinming chen Yuru LIU wenxi Tianjin University,Tianjin,China chen Fumin Professor,Dept.of Material Science and Engineering,Tianjin University Tianjin 300072,China

The bainitic transformation in a Cu-Zn-Al-Mn alloy has been examined with *** re- sults show that the stacking faults and also the bainitic midrib are found at the beginning of bainite formation in the *** stacking fault planes can pass continuously through the midrib in *** growth ledges occur at the broad faces and rims of *** broad and narrow faces of th ledges are parallel to the fault plane and habit plane *** their Miller indices are {110}_(B2).The moving direction of ledges is parallel to the fault plane. It may be deduced that the bainite in alloy are initially formed by shear and the process of growth are go verned by propagation o f fault planes.

关键词： Cu-Zn-AI-Mn alloy bainitic midrib growth ledge

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试评外周神经生理效应的函数之争

心理学报 1997年第3期29卷 250-256页

作者：陈文熙山西矿业学院

大量的神经生理学实验久已证实由刺激引起的外周神经生理效应具有类似于心理物理效应的高度压缩现象。从外周神经纤维中观察到的神经脉冲频率或发生电位是描述这种压缩效应的常用方法。半个多世纪以来一部分研究人员观察到压缩效应遵守... 详细信息

大量的神经生理学实验久已证实由刺激引起的外周神经生理效应具有类似于心理物理效应的高度压缩现象。从外周神经纤维中观察到的神经脉冲频率或发生电位是描述这种压缩效应的常用方法。半个多世纪以来一部分研究人员观察到压缩效应遵守刺激强度的线性对数函数，而另一部分研究人员则观察到幂函数。这种传统实验分歧，通过笔者前时建立的刺激－效应方程，得到合理的说明和两者的统一。

关键词：神经生理学外周神经系统发生电位生理效应