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“石头法”的嬗变——黔湘桂侗族地区从“款石”、“法岩”到“石碑法”的立法活动 被引量:4
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作者 徐晓光 《贵州社会科学》 CSSCI 2009年第9期100-104,共5页
"勒石定规"是侗族款组织最重要的立法活动,这类"款石"属于"上位法",是着重打击"贼盗"的基本法律。侗族村寨为解决纠纷和处理案件,通过栽岩活动竖立"法石",涉及的问题多、内容广,构... "勒石定规"是侗族款组织最重要的立法活动,这类"款石"属于"上位法",是着重打击"贼盗"的基本法律。侗族村寨为解决纠纷和处理案件,通过栽岩活动竖立"法石",涉及的问题多、内容广,构成较为完整的习惯法规范"岩规"系统,并在以后作为"先例"使用。后来以汉字记录立法内容,既有乡规民约(款约法),又有官府法令,也有村民自发记录的官府法令,这些"石碑法"都是不同渠道的法律的载体。 展开更多
关键词 侗族地区 款石 碑法
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Gravel Accumulation in Deposits of Viscous Debris Flows with Hyper-concentration 被引量:2
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作者 WANG Yuyi TAN Rongzhi +1 位作者 JAN Chyandeng TIAN Bing 《Journal of Mountain Science》 SCIE CSCD 2009年第1期88-95,共8页
According to the observational data of viscous debris flows with hyper-concentration, debris flows can be classified into three types:high-viscous, viscous, and sub-viscous debris flows.Distinct formation mechanism of... According to the observational data of viscous debris flows with hyper-concentration, debris flows can be classified into three types:high-viscous, viscous, and sub-viscous debris flows.Distinct formation mechanism of different graded bedding structures in deposits of viscous debris flows was analyzed in this paper by using their yield-stress ratio and flow plug ratio.This paper specially analyzed the effect of Weissenberg which the gravels in squirm condition of hyper-concentration viscous flows would tend to move vertically, and the formation mechanism of the gravels accumulated at surface was also studied.The analysis in this paper can establish a foundation for the studies on differentiation of bedding structures of debris flow deposits and studies on dynamic parameters of debris flows. 展开更多
关键词 Viscous debris flow effective yield-stressratio flow plug ratio effect of Weissenberg gravelaccumulation at surface
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On paleoecology of carnivorous dinosaurs(Tyrannosauridae,Dromaeosauridae) from Late Cretaceous fossil deposits of Amur region,Russian Far East 被引量:1
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作者 Ivan U.Bolotsky 《Global Geology》 2011年第1期1-6,14,共7页
Present article is on Russian Far East carnivorous dinosaur paleoecology.Described summary is based on detailed study and comparison of isolated shed teeth morphology.
关键词 dinosaurs Blagoveschensk Kundur CRETACEOUS THEROPODA
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Characterization and processing of talc-magnesite from the Zinelbulak deposit 被引量:2
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作者 HOJAMBERDIEV Mirabbos ARIFOV Pulat +1 位作者 TADJIEV Kamil XU Yunhua 《Mining Science and Technology》 EI CAS 2010年第3期415-420,433,共7页
The characteristics of talc-magnesite from the Zinelbulak deposit(Uzbekistan) were investigated via X-ray diffraction, differential thermal analysis,infrared spectroscopy and optical microscopy.The mineralogical compo... The characteristics of talc-magnesite from the Zinelbulak deposit(Uzbekistan) were investigated via X-ray diffraction, differential thermal analysis,infrared spectroscopy and optical microscopy.The mineralogical composition of the Zinelbulak talc-magnesite consists of 52 wt.%talc,43 wt.%carbonates and 5 wt.%of the iron-containing minerals magnetite,siderite and chlorite.Petrographic analysis confirmed the presence of carbonates in two forms:magnesite and breunnerite.Grindability tests revealed that talc and magnesite particles are completely separated after a grinding process carried out for 10~12 min.The distribution of the yield of talc and magnesite,as a function of the particle size,shows an irregular feature in that a comparatively coarser sample(>0.1 mm) is richer in magnesite and poor in talc while a comparatively finer sample(<0.1 mm) has a composition poorer in magnesite.The dressability of the Zinelbulak talc-magnesite was tested using conventional gravity concentration,flotation and electromagnetic separation.Gravity concentration was found to be the most economic initial process for the complete separation of magnesium carbonate and talc.Subsequent flotation and magnetic separation techniques could further increase the yield of high quality magnesite and talc.Refractory samples prepared by heating the separated magnesite at 1600℃for 2 h met the State Standards for refractory materials. 展开更多
关键词 talc-magnesite GRINDING froth flotation gravity concentration magnetic separation
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An effective approach for improving flotation recovery of molybdenite fines from a finely-disseminated molybdenum ore 被引量:2
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作者 LIN Qing-quan GU Guo-hua +4 位作者 WANG Hui WANG Chong-qing LIU You-cai FU Jian-gang ZHU Ren-feng 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第6期1326-1339,共14页
An effective flotation approach is proposed for improving the recovery of molybdenite fines from a finely-disseminated molybdenum ore. To maximize the flotation recovery of molybdenum, process mineralogy of raw ore, c... An effective flotation approach is proposed for improving the recovery of molybdenite fines from a finely-disseminated molybdenum ore. To maximize the flotation recovery of molybdenum, process mineralogy of raw ore, contrast tests, optimization of operation conditions and particle size analysis were systematically investigated. Process mineralogy suggests that in the raw ore, 61.63% of molybdenite particles distribute in the 〈20 pm size fraction, and intergrow with muscovite and pyrite as the contained and disseminated type. Contrast tests indicate that conventional flotation responds to poor collection efficiency for particles less than 25 pm. Oil agglomerate flotation (OAF) process demonstrates an obvious superiority in improving the flotation recovery of molybdenite fines. Furthermore, the flotation results of OAF process reveal that the dosage of transformer oil plays a critical role on the average size of collected mineral particles (d(0), agglomerates (d^0) and the molybdenum recovery. In addition, industrial tests illustrate that compared with the Mo-S bulk flotation approach, OAF process not only increases Mo recovery and grade of molybdenum concentrate by 22.75% and 17.47% respectively, but also achieves a sulfur concentrate with a superior grade of 38.92%. 展开更多
关键词 molybdenite fines molybdenum ore particle size oil agglomerate flotation transformer oil froth flotation
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Debris Flows Introduced in Landslide Deposits under Rainfall Conditions:The Case of Wenjiagou Gully 被引量:9
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作者 ZHOU Jia-wen CUI Peng +2 位作者 YANG Xing-guo SU Zhi-man GUO Xiao-jun 《Journal of Mountain Science》 SCIE CSCD 2013年第2期249-260,共12页
Debris flows often occur in landslide deposits during heavy rainstorms.Debris flows are initiated by surface water runoff and unsaturated seepage under rainfall conditions.A physical model based on an infinitely long,... Debris flows often occur in landslide deposits during heavy rainstorms.Debris flows are initiated by surface water runoff and unsaturated seepage under rainfall conditions.A physical model based on an infinitely long,uniform and void-rich sediment layer was applied to analyze the triggering of debris-flow introduced in landslide deposits.To determine the initiation condition for rainfall-induced debris flows,we conducted a surface water runoff and saturated-unsaturated seepage numerical program to model rainfall infiltration and runoff on a slope.This program was combined with physical modeling and stability analysis to make certain the initiation condition for rainfall-introduced debris flows.Taking the landslide deposits at Wenjiagou gully as an example,the initiation conditions for debris flow were computed.The results show that increase height of surface-water runoff and the decrease of saturated sediment shear strength of are the main reasons for triggering debris-flows under heavy rainfall conditions.The debris-flow triggering is affected by the depth of surface-water runoff,the slope saturation and shear strength of the sediment. 展开更多
关键词 Debris flow Rainfall Surface-waterrunoff Unsaturated seepage Physical modeling Numerical modeling
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Effects of Magnesia Fines Addition and Spinel with Different Compositions on Thermal Expansion Behavior of Alumina Magnesia Castables
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作者 ZHANG Qiaoyan ZHU Boquan LI Xiangcheng 《China's Refractories》 CAS 2012年第2期23-27,共5页
Effects of magnesia fines addition ( 4%, 6% and 8% in mass ) and spinel with different compositions (alumina-rich, magnesia-rich and stoichiometric spi-nel) on thermal expansion behavior of alumina magne-sia casta... Effects of magnesia fines addition ( 4%, 6% and 8% in mass ) and spinel with different compositions (alumina-rich, magnesia-rich and stoichiometric spi-nel) on thermal expansion behavior of alumina magne-sia castables were researched using tabular corundum, magnesia fines, spinel fines, p-A12O3, Secar-71 cement and SiO2 fume as main starting materials. The results show that: (1) thermal expansion coefficients of speci- mens with 4 mass% and 6 mass% magnesia fines have the similar change tendency, increasing slightly with temperature rising ; when magnesia addition is 8 mass% , the thermal expansion coefficient increases ob-viously at Ⅰ 050 ℃ and reaches the peak at 1 350 ℃ ; (2) when MgO content is the same, the specimen with magnesia-rich spinel has the lowest thermal expansion coefficient; (3) for the castables specimens with the same MgO content, the specimen with magnesia has higher thermal expansion coefficient than that with pre-synthesized spin, el, which is related with the secondary spinelization dttriag the heating process. 展开更多
关键词 MAGNESIA SPINEL CASTABLES thermal ex-pansion
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Obtaining and Reviewing X-ray Diffraction Analysis of the Uranium Catalyst SAPO-U, W, V Based on Natural Zeolite Chankanayskoe Deposits for the Oxidation of S02 to S03
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作者 Aibassov Erkin Zhakenovich Kenzhaliev Bagdaulet Kenzhalievich Tussupbaev Nessipbay KuandykovichI Serikbaeva Gulbarshyn Kuanyshkanovna Bulenov Maxat 《Journal of Chemistry and Chemical Engineering》 2014年第1期97-99,共3页
We first obtained by impregnating the zeolite with salts U, W and V and examined the X-ray uranium catalyst SAPO-U, W, V based on natural zeolite Chankanayskogoe deposits for the oxidation of SO2 to SO3.
关键词 Natural zeolite deposits Chankanayskoe uranium catalyst SAPO-U W V the catalytic oxidation SOz to 803 catalysis.
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Processing of Mercury-Stibium Gold Bearing Ore ot Diiiikrut Deposit
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作者 Mahsuda Abdusalyamova David Dreisinger +4 位作者 Zinaida Zinchenko Petr Solozhenkin Safarali Gadoev Ivan Tyumin Marhabo Ismailova 《Journal of Environmental Science and Engineering(B)》 2013年第5期308-317,共10页
The mercury-antimony-gold ore was subjected of the flotation. As a result of enrichment of ore, the mercury-antimony concentrate with the contents of 51.5% Sb, 3.55% Hg and 6 g/t Au was received. Vacuum distillation o... The mercury-antimony-gold ore was subjected of the flotation. As a result of enrichment of ore, the mercury-antimony concentrate with the contents of 51.5% Sb, 3.55% Hg and 6 g/t Au was received. Vacuum distillation of concentrate allocation in serial sublimates mercury and antimony was designed. The big amount gold passed to calcine after vacuum distillation. The gold in calcine roastin uo to 900 ℃was 30.6 e/t. 展开更多
关键词 Ore CONCENTRATE flotation CYANIDATION ROASTING MERCURY ANTIMONY gold.
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Numerical simulation of deposit in confluence zone of debris flow and mainstream 被引量:8
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作者 CHEN RiDong LIU XingNian +1 位作者 CAO ShuYou GUO ZhiXue 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第10期2618-2628,共11页
Abundant solid materials were formed as a result of landslide and collapse due to Wenchuan earthquake.The solid source around mountains would form a debris flow when appropriate rain condition occurs.Such a debris flo... Abundant solid materials were formed as a result of landslide and collapse due to Wenchuan earthquake.The solid source around mountains would form a debris flow when appropriate rain condition occurs.Such a debris flow is structurally very large and strong,and the river flow can hardly wash away the deposit when the debris flow enters into the mainstream.As a result,the deposit on the river bed due to debris flow will cause a series of hazards.Based on the previous researches and relevant data,this paper simplified the interaction between debris flow and current of the main river,and adopted the finite element characteristic-based-split algorithm which is favorable to the stabilization of dealing with the convection.Finally,the numerical model of the confluence of debris flow deposit and main river was developed,and the deposit progress of the mega-debris flow from Wenjiagou in Mianyuan river was reproduced.Furthermore,the influence of the deposit on the flow route of the main river,and distribution of velocity and water depth were analyzed.The results showed that the simulation deposit terrain qualitatively agreed with the field data through comparison,including the deposit area and depth distribution.Furthermore,the improvement of the model in future was discussed. 展开更多
关键词 torrential flood debris flow confluence zone FEM
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Control of favorable lithology on Jinlongshan micro-fine disseminated gold deposits, southern Qinling Mountains 被引量:2
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作者 赵利青 冯钟燕 《Science China Earth Sciences》 SCIE EI CAS 2002年第2期123-132,共10页
Jinlongshan gold orebelt, a newly discovered one in sedimentary rock region in southern Qinling Mountains, is mainly located in upper Devonian and lower Carboniferous calcareous siltstone and argillic silty limestone ... Jinlongshan gold orebelt, a newly discovered one in sedimentary rock region in southern Qinling Mountains, is mainly located in upper Devonian and lower Carboniferous calcareous siltstone and argillic silty limestone of later Paleozoic era. Typical disseminated gold mineralization occurred in calcareous siltstone, which is major host rock and mainly composed of silt (SiO2 mostly varies from 38% to 73%) and calcite (CaO mostly varies from 10% to 25%). Pyrite created by living beings in Nanyangshan formation may be poor in gold. Faults and favorable layers jointly control disseminated gold mineralization. The significance of this opinion is very great for gold exploration. 展开更多
关键词 favorable lithology (permeable beds) for ore-controlling calcareous siltstone micro-fine disseminated gold deposit sediment-hosted gold deposit Carlin-type deposit Jinglongshan gold deposit southern Qinling Mountains Nanyangshan formation
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