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A series of novel chelating fibers containing sulfur,nitrogen,oxygen heteroatoms were prepared via the functionalization......
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A novel practical method for the generation of dichlorocarbene by ultrasonic irradiation and phase-t
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A biomimetic type transformation of vobasine (6) to koumine (1) is described and a pro-bable biogenetic pathway is prop......
A precursor of the Y3Al5O12:Ce (YAG:Ce) phosphor was obtained by co-precipitation of the solution of high purity nitrate......
【正】 Tangshan Sanyou Chemical Industries Co.,Ltd.(Tangshan Sanyou,SH:600409) an-nounced on July 10th that it intends t......
We have developed an alternative route to synthesize Tn antigen. The synthetic product was characterized by IR, 1H-NMR ......
Relation of asid- volatile sulfide and clay content of sediment to the bioavailability of zinc and c
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Recent progress on transition metal oxides and carbon-supported transition metal oxides as catalysts
As a main oxidizer in solid composite propellants,ammonium perchlorate(AP)plays an important role because its thermal de......
The effects of the concentration of dissolved total organic carbon (TOC), the TOC/Br- ratio, bromide ion levels, the chl......
Nickel tartrate precursor particles were synthesized by the liquid phase precipitation method in an ethanol-water-ammoni......
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Large scale tungsten nanowires and tungsten nanodots are prepared in a controllable way. The preparation is based on mec......
The development of Hydro-Informatic Modelling System (HIMS) provides an integrated platform for hydrological simulation.......
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The title compound (PAP) with excellent nonlinear optical prpper-ties has been synthesized. CHCHSCOO , monoclinic with ......
The induced codeposition mechanism of Mo, P and Ni from the solution of ammoniac citrate was studied by means of steady......
New Dimeric Selenidoarsenate(III):Solvothermal Synthesis and Crystal Structure of [Co(en)_3]_2As_2Se
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The kinetics of stripping of gold loaded in dibutyl carbito (DBC) organic phase by sodium sulfite was investigated in a ......
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Peptidomics has emerged as a new discipline in recent years. Mass spectrometry (MS) is the most universal and efficient ......
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Inhibitive effects of chlortetracycline on performance of the nitritation-anaerobic ammonium oxidati
The short-and long-term effects of chlortetracycline (CTC) on the nitritation-anaerobic ammonium oxidation (anammox) pro......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
利用BG11培养基和硝化细菌培养基分离到小球藻和两株硝化细菌XHL1和XHL12,采用扫描电镜对小球藻外部形态进行观察,通过计数方法制......
为了分析油相材料与硝酸铵溶液的界面性质,采用剪切型界面黏弹性仪测定两相界面黏度及界面膜屈服值,分析了乳化剂、油相材料与硝酸......
膜给简历电影反应堆充气了是为废水处理的一种有希望的技术。在这研究，碳膜给简历电影反应堆(CMABR ) 充气了被开发了，到同时把碳 or......
采用电化学氧化技术处理腈纶厂生化池废水,运用国标测试方法对COD、氨氮、色度和氯离子等4项指标进行了分析.结果表明:色度得到有......
为完善似鮈（Pseudogobiovaillanti）的生理生态参数，合理开发利用汀江似鮈渔业资源，进行了似的耐温性及温度对其耗氧率和排氨率影响的研......
随着水产养殖业的快速发展,养殖水体氮素污染日益突出,硝化微生物在水产养殖环境氮循环中具有重要作用。本文主要综述我国淡水养殖......
利用热分解法制备CuO修饰Ti基阴极和SnO2-Sb2O5修饰Ti基阳极,组成无隔膜电解体系,以模拟废水（NO3--N 50mg/L）为对象,进行了水中NO3--......
[目的]探究不同施肥措施及施氮量对大蒜产量的影响以及蒜田的氨挥发排放特点,实现在保证效益的前提下的最小环境代价。[方法]田间......
Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis
激活的支持碳的基于 Ru 的催化剂和 A301 铁催化剂被准备，并且铁催化剂的性能上的反应温度，空间速度，压力，和 H2/N2 比率的影响在系列......
采用加压浸出从钼钴废催化剂中分离钼，在原料摩尔比Na2CO3／Mo=1．3，浸出温度150℃的条件下，钼的浸出率达90％。浸出液经酸化处理后采用N搿......
以环氧氯丙烷和二乙胺为原料，过硫酸铵和亚硫酸氢钠为引发剂，在反应时间为6h，环氧氯丙烷／--乙胺摩尔比为1．2，引发剂用量占单体总质量的0．6......
[目的]研究基于国标法测定氨氯和总氮含量时无氨水的替代用水。[方法]用氨氮快速测定仪分别对一次蒸馏水、新制二次重蒸水、无氨水......
综合运用地理信息系统(GIS)、水质预测模型、数据库、空间分析技术,实地采集盘龙江水样数据,以GPS空间位置点数据和QuickBird影像......
This paper reports the results of the visual observations and micro-analysis of concrete core samples after 6 and 12 mon......
为测定不同规格的通风笼玉米秸秆对体外发酵的影响,选择最适规格的通风笼达到对玉米的优化存储,本试验选取了1、0.8、0.5 m宽通风......
以普通单质肥料为原料，制备了N：P2O4：K2O比例分别为14：13：15，11：14：17和14：14：17的3种控释掺混肥料，于2007年在山东省泰安市徂徕镇进行田间试......
以高锰酸钾改性后的花生壳为原料,通过共沉淀法制备了磁性花生壳(PSK-Fe3O4)复合材料,并以其为载体制备了磁性花生壳负载钯催化剂(......
用Ｘ射线光电子能谱（ＥＳＣＡ）研究表明：以硫酸铜为活化剂，丁胺黑药为捕收剂浮选黄铁矿时，药剂与矿物表面间发生了化学吸附，硫酸铜在黄铁矿表面吸附......
采用处理后的河流沉积物进行30d的静态土柱浸泡模拟实验，分不同层次对系统的上覆水和沉积物的间隙水的基本物理化学指标和氮转化细......
为了解决当前农业生产过程中氮磷损失量计算过程中存在的不确定性问题,该文结合硝酸盐、铵盐与土壤颗粒结合类型的差异,从氮循环的......
[Objective] The aim was to discuss the effects of probiotics on the growth of Cyprinus carpiod and water quality. [Metho......
通过400℃，500℃、600℃热解含Fe，Co，Ni的高聚物前驱体（M-PAA，M为Co，Fe，Ni）制备覆碳的Fe，Co，Ni纳米复合材料（M／C），研究了其对AP热分解的影响。XRD......
采用溶胶-凝胶法制备了AP/SiO2/Fe2O3纳米复合材料。用扫描电镜、X射线衍射仪（XRD）对产物的结构进行了表征。用差示扫描量热仪（DSC）对......
