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New Maikhanellid Shells and Siphogonuchitid Spicule Bundles from the Cambrian Fortunian Stage of South China

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Acta Geologica Sinica(English Edition) 2016年第5期90卷 1629-1636页

作者： LIU Yunhuan ZHANG Yanan SHAO Tiequan TANG Hanhua JIANG kaituo WANG qi CHEN Cheng DONG Junyan LIANG Yongchun DAI Jun XUE Jiaqi School of Earth Sceince andResouces Chang'an University Xi'an 710054 China Key Laboratory for the study of FocusedMagmatism and Giant Ore Deposits MLR Xi 'an 710054 China

Maikhanellids are a distinct group of Cambrian Fortunian small shelly fossils by the capshaped profiles and scaly shell *** to the individual shell shape and ornamentation feature types of 50 maikhanellids fossils which were collected from Xixiang botia,we confirmed the family Maikhanellidae content of six genera,which are Maikhanella,Ramenta,Purella,Ramentoides,Yunnannopleura and *** the halkieriid animals whose shells and spicules are articulated on different body parts,maikhanellids were presumably yielded by siphogonuchitid spicules penetrating the intermediate matrix（the ＂spicule shell＂ hypothesis）,and this is the reason that some researchers treated maikhanellids and co-occurring siphogonuchitids as *** affinities of Maikhanellids and siphogonuchitids remain ***,we report three dimensionally phosphatized maikhanellid shells and siphogonuchitid spicule bundles from the Cambrian Fortunian small shell faunas of South *** differ from all the previously reported maikhanellids and siphogonuchitids,and may represent new *** intact and smooth surface underneath the partially preserved scales of the shells challenges the ＂spicule-shell＂ *** present siphogonuchitid spicules differ from the maikhanellid scales in size,morphology,*** pattern,thus the spicules might not be derived from the *** the shells and spicule bundles were articulated on different body parts of the same animals remains unknown.

关键词： maikhanellids siphogonuchitids Cambrian Fortunian Stage South China

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考虑占用率的大型停车库泊位动态分配模型

交通运输工程与信息学报 2024年第3期22卷 181-195页

作者：李聪颖袁锴璐张洪涛王琦贠开拓史彤彤李坤西安建筑科技大学土木工程学院西安710055

为提高驾驶员泊车效率,本文考虑不同停车库占用率下的停车库运营者及驾驶员泊位分配需求,构建大型停车库泊位分配模型。本文引入停车库占用率将停车库空满等级划分为空闲泊位充裕时段、空闲泊位适中时段、空闲泊位紧缺时段,综合考虑停... 详细信息

为提高驾驶员泊车效率,本文考虑不同停车库占用率下的停车库运营者及驾驶员泊位分配需求,构建大型停车库泊位分配模型。本文引入停车库占用率将停车库空满等级划分为空闲泊位充裕时段、空闲泊位适中时段、空闲泊位紧缺时段,综合考虑停车库运营者运营管理需求与驾驶员快速寻泊需求,以寻位行驶时间、离开停车库行驶时间为参数构建运营管理时间效用函数,以寻位行驶时间、停车入位耗时、步行时间为参数构建驾驶员泊车耗时效用函数;将运营管理时间效用与驾驶员泊车耗时效用加权统一为总时间效用,以总时间效用最大化为目标,建立兼顾停车库运营者及驾驶员泊位分配需求的泊位分配模型;引入泊位利用率、停车总耗时量化模型性能。以西安市某大型商业停车库为例,选取9:00、11:30、13:00表征空闲泊位充裕、空闲泊位适中、空闲泊位紧缺时段进行泊位分配。不同停车库空满等级下,停车库内空闲泊位的总时间效用与停车总耗时均呈负显著相关,其中,空闲泊位充裕时段,停车库内空闲泊位的总时间效用与停车总耗时的相关性最弱,相关系数为-0.461;空闲泊位紧缺时段,停车库内空闲泊位的总时间效用与泊位利用率呈正显著相关,相关系数为0.710。研究表明本模型可在优选停车总耗时较小泊位的基础上,为停车高峰时段预留利用率较高的泊位,提高空闲泊位紧缺时段的泊车效率及驾驶员的泊车满意度。

关键词：交通工程泊位分配停车库占用率停车总耗时效用理论 CRITIC法

维普期刊数据库博看期刊

Xixiang Biota——Another Rare Scientific Window of the Cambrian Explosion

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Acta Geologica Sinica(English Edition) 2016年第3期90卷 1045-1046页

作者： LIU Yunhuan WANG qi SHAO Tiequan DONG Junyan TANG Hanhua ZHANG Yanan JIANG kaituo HU Bo WANG Zhaojing PANG Guotao MA Yingying FAN Ziyang College of Earth Science and Resources Chang'an University

ObjectiveThe Xixiang biota is a specially preserved micro oryctocoenose discovered in the Lower Cambrian Kuanchuanpu member of Dengying Formation at Zhangjiagou section of Xixiang County in southern Shaanxi Province. The Kuanchuanpu member is a set of neritic carbonate sedimentary formation containing phosphorus and silicon. Its lithology is mainly grey massive fine crystalline, dense massive phosphoruscontaining biolithite and flaggy microcrystallinecrystalline dolomitic limestone. It is in a conformable contact with the underlying upper dolomite member of Dengying Formation and a parallel unconformable contact with the overlying Guojiaba Formation. The fossil assemblages of the Xixiang biota could be compared with the microfbssils from the Lower Cambrian Meishucun Stage, and their age is the Early Cambrian Meishucun Stage.

关键词： Xixiang Biota Another Rare Scientific Window of the Cambrian Explosion

陕南寒武纪梅树村期西乡生物群中的管状化石研究

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微体古生物学报 2017年第1期34卷 49-60页

作者：王琪刘云焕邵铁全张虎张亚楠唐汉华姜开拓王朝景庞国涛秦嘉琛长安大学地球科学与资源学院西安710054

陕南寒武纪梅树村期西乡生物群中的管状化石数量丰富,本文对其中的三类主要化石类型:软舌螺、似软舌螺类和阿纳巴管类进行了深入研究。其中软舌螺主要为圆管螺目,属于寒武纪软舌螺演化的第一阶段,且化石具有不同的壳体结构:主要分为单... 详细信息

陕南寒武纪梅树村期西乡生物群中的管状化石数量丰富,本文对其中的三类主要化石类型:软舌螺、似软舌螺类和阿纳巴管类进行了深入研究。其中软舌螺主要为圆管螺目,属于寒武纪软舌螺演化的第一阶段,且化石具有不同的壳体结构:主要分为单层壳和多层壳两大类,多层壳根据截面又可分为同心与偏心两类。单层壳与同心多层壳可能属于原生结构;偏心多层壳属于次生结构。对上述各类结构进行了分类统计,其中的单层壳与次生多层壳居多,并推测原生多层壳体的出现可加固管体,是地球早期生物为应对同期食肉动物所进化出的生存对策。似软舌螺类的两属:小软舌螺属及小钻孔螺属在此生物群中均有发现。西乡生物群中的阿纳巴管类主要为Anabarites trisulcatus,Aculeochrea tripartitus和Anabarites isiticus,其中Anabarites isiticus的化石壳体表面具有细密生长纹,生长纹可明显分为较粗与较细两类,二者相间排列、重复出现,体现了生物不同的生长周期。

关键词：管状化石软舌螺似软舌螺阿纳巴管梅树村期西乡生物群西乡陕南

Study and Discussion on Acupuncture Treatment of Urticaria

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World Journal of Integrated Traditional and Western Medicine 2017年第2期3卷 1-4页

作者： Cai Lingling Li Yuanwen Zhang Yueyue Li Hua Yin Xia Dong Ying Zhao Fengzhu Fang Yun Sun Jie Shi Jingwen Xu kaituo Dongfang Hospital the Second Affiliated Hospital of Beijing University of Chinese Medicine Beijing 100078 China

OBJECTIVE:To explore the etiology and pathogenesis of urticaria and its characteristics,advantages of acupuncture and moxibustion treatment of it and the commonly used acupoints,with a prospect of providing clinical guidance for other ***:Methods and views of urticaria treatment with acupuncture and moxibustion were summarized and the representative acupoints were found out by retrieving related literatures in recent ***:Traditional Chinese medicine holds that urticaria is caused by weakness and leads to the wind stroke knot on the skin,which fights against qi and blood and generates wheal..Acupuncture therapy has its unique advantages in treating,which is worth clinical reference and promotion,however,there are still some problems in its clinical ***:Acupuncture therapy should be combined with reinforcing qi and nourishing blood,detoxification dehumidification,dispelling wind and arresting itching as the principle,as according to the the principle that different symptomsmatch with the corresponding points after selecting the main *** treat patients by choosing acupuncture point according to the law of syndrome differentiation in selecting,tired to choose acupuncture point,local pick acupuncture point and choosing particular *** urticaria may attack in any season,in any place and on any ***,the prevention and treatment of urticariais a protracted war,and needs to strengthen the nursing in the treatmentto achieve the desired effect.

关键词： Acupuncture and moxibustion Urticaria Channels and collaterals Treatment