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据气象部门预测，2022年5月9日至13日，我国江南南部和华南地区将迎来今年入汛以来最强降雨过程，相关省份地质灾害防范进入关键时段。根据《自然资源部地质灾害防御响应工作方案》，自然资源部已于2022年5月10日8时启动地质灾害防御IV级响应。
LANDSLIDE IDENTIFICATION FROM IRS-P6 LISS-IV TEMPORAL DATA-A COMPARATIVE STUDY USING FUZZY BASED CLASSIFIERS
Kashmir earthquake CBSI LISS-IV Vegetation Index Temporal PCM
2018/4/18
While extracting land cover from remote sensing images, each pixel in the image is allocated to one of the possible class. In reality different land covers within a pixel can be found due to continuum...
Th(IV)在高庙子膨润土上的吸附行为
高庙子膨润土 吸附 Th(IV)
2011/10/18
采用静态批式法研究了Th(IV)在高庙子膨润土上的吸附行为。探讨了接触时间、ph、离子强度、固液比以及腐殖酸对吸附的影响'测定了293.15K下的吸附等温线。实验结果表明，ph和离子强度对Th(IV)吸附的影响很大，腐殖酸在低ph下促进Th(IV)在高庙子膨润土上的吸附，而在高ph下几乎没有影响；Th(IV)在高庙子膨润土上的吸附主要通过表面络合和离子交换进行；Langmuir方程可以很好的拟合吸...
用静态批式的方法研究了[N值’离子强度’温度和腐殖酸浓度等因素对H7"0#在凹凸棒石上的吸附’解吸的影响(结果表明%[N值对H7"0#在凹凸棒石上的吸附有显著影响%而离子强度对吸附的影响却相对较弱!H7"0#在凹凸棒石表面的吸附主要通过内层络合形式进行%而外层络合和离子交换只是微弱的作用!当[Nb"&+)时%富里酸"‘<#和胡敏酸"N<#对吸附亦有促进作用!升高温度有利于H7"0#在凹凸棒石上的吸...
FT-IR/PAS AND SEM EDX STUDIES ON ALUMINOSILICATES MODIFIED BY CS(I), TH(IV) AND U(VI)
industrial minerals radioactive waste disposal
2011/11/7
Clays and zeolites are some of the most important industrial minerals. They have practical applications in geology, agriculture, construction, engineering, process industries, and environment. This ar...
The Chemical Form of Vanadium (IV) in Kaolinite
Electron paramagnetic resonance Isomorphic substitution Kaolinite Vanadium
2011/12/30
A combined application of electron paramagnetic resonance (EPR) and Fourier-transform infrared (FTIR) spectroscopies with thermal methods was used to determine the chemical form of V(IV) in a Georgia ...
Cross-linked Smectites. IV. Preparation and Properties of Hydroxyaluminum-Pillared Ce- and La-Montmorillonites and Fluorinated NH4+-Montmorillonites
Cross-linked smectite Hydroxy-Al Montmorillonite Pillared interlayered clays Pore-size distribution Rare earth elements
2012/1/13
Reaction of hydroxy-Al oligocations with Ce3+- and La3+-exchanged montmorillonites, using 1.25, 1.60, or 2.0 mmole Al/g smectite, yielded partially pillared hydroxy-Al montmorillonite products contain...
Tris(Acetylacetonato)Silicon(IV) Binding to Montmorillonite and Hydrolysis to Interlayer Silicic Acid
Hydrolysis Montmorillonite Pillared interlayer complex Si(acac)3+ Silicic acid
2012/2/2
The reactions of the tris(acetylacetonato)silicone(IV) cation (Si(acac)3+) with Na+-, Mg2+-, and Co2+-exchange forms of hectorite and montmorillonite have been investigated to understand better the fo...
The Influence of Aluminum on the Formation of Iron Oxides. IV. The Influence of [Al], [OH], and Temperature
Aluminum Ferrihydrite Goethite Hematite Iron oxides
2012/2/9
Ferrihydrite was transformed to goethite and/or hematite at various temperatures, [OH], and [Al]. Increasing temperature and [Al] favored hematite, increasing [OH] favored goethite. A given [Al] induc...
Adsorption of Ethylenediamine (EDA) on Montmorillonite Saturated with Different Cations IV: Al-, Ca- and Mg-Montmorillonite: Protonation, Ion-Exchange, Co-ordination and Hydrogen-Bonding
Adsorption Ethylenediamine Montmorillonite Hydrogen-Bonding
2012/2/14
Ethylenediamine (EDA) adsorbed from aqueous solution or vapor phase on Al-, Ca- and Mg-montmorillonite was retained to a more or less large extent in protonated form. The NH3+ :NH2 ratio decreased wit...