镨
- 名praseodymium
![镨](../cache/920510.jpg)
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一种金属元素,属稀土金属,用于做特种合金和特种玻璃,亦可做陶器的颜料。
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氯化钇和氯化镨引起的人淋巴细胞DNA分子损伤的研究
A Study of DNA Damage in Human Lymphocytes Induced by Yttrium Chloride and Praseodymium Chloride
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X射线吸收快速分析仪在铈/镨分组段控制中的应用
Application of X-Ray Absorption Analysis to the Ce / Pr Counter-Current Extraction Process
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TPD-质谱研究稀土氧化镨晶格氧及其与H2和CO的反应性能
Desorption and reactivity of lattice oxygen species in praseodymium oxide studied by tpd-mass spectroscopy
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镨系ZnO电阻片非线性特性研究
Investigation of ZnO-Pr_6O_ ( 11 ) - based Non-linear Varistor non-linear Characteristics
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掺铁镨基钙钛矿氧化物材料Pr-Ca-(Mn,Fe)-O中的大磁阻效应
Colossal Magnetoresistance Effects in Pr-Ca - ( Mn , Fe ) - O Perovskite Oxides
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金属钕及镨中钕、镨和钐的ICP测定
Determination of Pr , Nd , Sm in Praseodymium and Neodymium Metal Samples
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ICP-AES法直接测定镨钕合金中的主量成分和微量杂质
Direct Determination of Major Components and Trace Impurities in Pr-Nd Alloy by ICP-AES
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掺镨GaN薄膜的微结构与光致发光
Micro-structure and Photoluminescence Studies of Pr-implanted GaN
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镨掺杂PZT二元系压电陶瓷性能研究
Properties of Praseodymium - modified PZT Binary Ceramics
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镧镨铈混合稀土(LPC)是新型专利成分的混合稀土。
Lanthanum-praseodymium-cerium rare earth ( LPC ) was a patent composition .
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研究了用成形滤纸片薄样X射线荧光光谱法测定铝合金中的镧、铈、镨、钕、钐。
Determination of La , Ce , Pr , Nd and Sm in rare-earths-aluminium alloy by X-ray fluorescence spectrometry using shaped filter paper technique was studied .
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镧镨铈(LPC)稀土在6063铝合金中的作用
The Role of La-Pr-Ce ( LPC ) Rare Earths in Aluminum Alloy No.6063
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有机溶剂DMF中钴与镨的共沉积
Coelectrodeposition of Praseodymium and Cobalt in DMF
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高纯氧化镨样品ICP摄谱分析时光谱干扰校正方法的研究
A study of spectral interference correction method on analysing high purity pr_6o_ ( 11 ) sample by ICP spectrographic analysis
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高分辨率电感耦合等离子体光谱谱线数据库I.镧、铈、镨、钕、钐
Spectral Line Database of High Resolution-Inductively Coupled Plasma Spectroscopy ⅰ . Spectra of Rare Earth Elements of Lanthanum , Cerium , Praseodymium , Neodymium and Samarium
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ICP-MS法测定鼠脊髓液中超痕量镧、铈、镨和钕
Determination of Ultra-trace La , Ce , Pr and Nd in Mouse Spinal Marrow Liquid by ICP-MS
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利用FT-IR原位考察了稀土氧化镨上CO和表面羟基的反应。
In situ FT-IR spectroscopy has been used to study the surface species produced from the reaction of CO with praseodymium oxide ( Pr6O11 ) at 298-673K .
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用DSC法及DTA法测定镧、镨、钕、钐水合氯化物脱水过程中各阶段的热效应
Determination of ah of dehydration process of the hydrated chloride of lanthanum , praseodymium , neodymium , samarium by means of DSC and DTA
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本文将偏最小二乘法(PLS)用于荧光光度法同时测定铈、镨、铽。
The partial least square ( PLS ) method for spectrofluorimetric simultaneous determination of Ce , Pr and Tb in the HCI solution was studied .
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合成并表征了聚(苯乙烯(S)-丙烯酸(A))镨配合物(SAAC·Pr)。
Poly ( styrene-acrylic acid ) supported praseodymium complex ( SAAC · Pr ) has been synthesized and characterized .
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由于掺镨量较小(3%),XRD成分分析结果表明,产物仍为单相BaTi4O9,但粉体d值和晶胞参数比纯BaTi4O9减小。
The XRD analysis showed that the product was single-phase BaTi_4O_9 , but the d value and the crystal constant of the powder were less than those of normal BaTi_4O_ ( 9 ) .
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稀土与吡啶类及其氮氧化物形成配合物的研究(Ⅰ)&镨、钕、钐氯化物与2,2′-联吡啶-N,N′-二氧化物的固体配合物的合成及性质
Studies on the Rare Earth Complexes on Pyridine Derivatives and Their N-Oxide (ⅰ) & The Synthesis and Properties of the Complexes of Praseodymium , Neodymium and Samarium Chlorides with 2 , 2 ' - Bipyridine-N , N ' - Dioxide
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镨对保持储氢合金电极的高放电容量有利,当含0.2%(摩尔分数)时放电容量达290mA·h/g,铈则相反;
Pr is useful for keeping the high discharge capacity of the hydrogen storage alloy electrode ( The discharge capacity is 290 mAh / g when its content is 0.2 % ( mole fraction )), while Ce is harmful .
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在此基础上,为提高介孔TiO2的光催化活性,实现其可见光响应,尝试了将稀土离子钐、镝和镨掺杂到介孔TiO2中。
In addition , Sm3 + , Dy3 + and Pr3 + were doped into the mesoporous TiO2 in order to increase the catalysts activity and realize visible-light responsive of mesoporous TiO2 .
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pH值是影响非均相催化臭氧化反应过程的重要因素,以镨负载氧化铝(Pr/Al2O3)为催化剂,重点研究了溶液初始pH值对苯酚催化臭氧化过程的影响。
PH is the key factor to affect heterogeneous catalytic ozonation reactions . To study the effects of pH on catalytic ozonation , The Pr / Al2O3 powder was used as catalyst on catalyzed ozonation for degradation of phenol in different pH solutions .
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显色作用是镨(Ⅳ)进入ZrSiO4晶格,以及CeO2或CdO起协同作用导制的。
The really color developing action is to be supposed the Pr (ⅳ) impregnated into-ZrSiO_4 crystal lattice and such as CeO_2 or CdO acted as cooperation .
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对其压电和介电性能测试结果表明:与未掺杂PZT相比,掺镨后的PZT相界发生了移动,即移向了富锆的一端,其在锆钛比约为1.17~1.27之间;
Piezoelectric and dielectric properties of Pr modified PZT showed that compared whit PZT , morphotropic phase boundary ( MPB ) shifted to the higher ratio of Zr / Ti which is between 1.17 and 1.27 ;
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所研究的样品依据对SO2的转化能力可分为三组:高活性的镧、镨、钕、钐、铕和钆氧化物;
The oxides of La , Pr , Nd , Sm , Eu and Gd are very active after proper activation . SO 2 conversion reaches 98 % at temperature 450 ℃ over Nd 2O 3 sample .
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实验结果表明,镨对γ-Al2O3的修饰有效地提高了其在SA去除过程中的臭氧氧化活性,提高Pr/Al2O3的煅烧温度不利于催化活性,而增加镨的载量有利于催化剂的催化活性。
The praseodymium modification can effectively enhance the ozonation activity of ? - Al2O3 upon SA removal . Increasing the calcination temperature of Pr / Al2O3 is disadvantageous for the catalytic process , whereas increasing the load of praseodymium is helpful .
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建立了镨钕镝合金中7个稀土和7个非稀土杂质元素的ICP-AES测定方法。
Method of ICP-AES for simultaneous and direct determination of 7 rare earth elements and 7 non-RE impurities elements in Pr-Nd-Dy alloy was studied . Two series of mix-soluble multielement standard solutions were prepared . Suitable consistencies of samples were defined .