国外农药新品种

国外农药新品种新广谱性芽后除草剂ＬＧＣ－４０８６３１理化性质结构式：ＮＮＣＨ３ＯＯＣＨ３ＯＯＣＮＯＮＮＣＨ３ＯＯＣＨ３化学名称：Ｏ－〔２，６－双－〔（４，６－二甲氧基－２－嘧啶基）氧〕苯甲酰基〕二苯甲酮肟（ＩＵＰＡＣ）通用名：ｐｙｒｉｂｅｎｚｏｘｉ...     

理化因子对嗜盐隐杆藻细胞生长及胞外多糖产量的影响

比较不同ＮａＣｌ、Ｃａ２＋、ＰＯ３－４等离子浓度对嗜盐隐杆藻（Ａｐｈａｎｏｔｈｅｃｅｈａｌｏｐｈｙｔｉｃａ）细胞生长及胞外多糖（Ｅｘｏｐｏｌｙｓａｃ－ｃｈａｒｉｄｅＥＰＳ）产量的影响。在各影响因子不同浓度的培养条件下,０．５ｍｏｌ／Ｌ的ＮａＣｌ、１．０ｇ／Ｌ的Ｃａ（ＮＯ３）２·４Ｈ２Ｏ、０．１ｇ／Ｌ的ＫＨ２ＰＯ４分别是其最佳生长浓度。ＥＰＳ的产量在０．５ｍｏｌ／ＬＮａＣｌ、,０．５ｇ／ＬＣａ（ＮＯ３）２·４Ｈ２Ｏ、０．５ｇ／Ｌ的ＫＨ２ＰＯ４培养条件下最高。在较低的Ｃａ２＋、Ｍｇ２＋、ＰＯ３－４浓度下可提高ＥＰＳ产率。     

CaSO4—H3PO4—H2SO4—H2O四元系统及其应用（下）

ＣａＳＯ４－Ｈ３ＰＯ４－Ｈ２ＳＯ４－Ｈ２Ｏ四元系统及其应用（下）吴佩芝（上海天山路４６８弄９号３０４室２０００５１）中图分类号ＴＱ１２６．３５３四元系统在二水物流程中的应用〔１〕ＣａＳＯ４－Ｈ３ＰＯ４－Ｈ２Ｏ三元系统研究的结果指出：形成二水物硫酸钙的...     

1-羟基乙叉-1,1-二膦酸铜(Ⅱ)固体配合物的研究

本文合成了六种１－羟基乙叉－１１二膦酸ＣＨ３Ｃ（ＯＨ）（ＰＯ３Ｈ２）２（简称ＨＥＤＰ）与Ｃｕ（Ⅱ）的固体配合物。用元素分析和热重分析确定了这些配合物的组成Ｃｕ（Ｈ３Ｌ）２．１２Ｈ２Ｏ、Ｎａ４Ｃｕ（ＨＬ）２８Ｈ２ＯＣｕＨ２Ｌ．２Ｈ２Ｏ、ＮａＣｕＨＬ．６Ｈ２Ｏ、Ｎａ２ＣｕＬ．５Ｈ２Ｏ、Ｃｕ２Ｌ．３Ｈ２Ｏ（其中Ｌ＝ＣＨ３Ｃ（ＯＨ）（ＰＯ３）２）。用红外光谱和热分析对合成产物的结构及热稳定性作了系统的研究。通过电位滴定法讨论了Ｃｕ（Ⅱ）与ＨＥＤＰ之间的配位作用。     

焦化厂废水生物脱氮

焦化厂废水最大的特点是在废水中含有通称为固定铵和挥发氨的强、弱酸的铵盐,其含量折算成氮为２５０－７５０ｍｇ／Ｌ。废水中除了含有铵盐外,还含有多种其它的氮化合物,这些氮的化合物生物破坏过程伴随着铵盐进一步生成,这就是硫氰化物和氰化物,以及有机化合物──毗啶、喹琳及其衍生物等,这些化合物转化过程的反应式如下：ＮａＣＮＳ＋２Ｈ２Ｏ＋２Ｏ２→ＮａＮＨ４ＳＯ４＋ＣＯ２（１）２Ｃ５Ｈ５Ｎ＋１１Ｏ２＋２Ｈ２Ｏ→８ＣＯ２＋２Ｈ２Ｏ＋２ＮＨ４ＨＣＯ３（２）４ＮａＣＮ＋Ｏ２＋１０Ｈ２Ｏ→４ＮａＮＨ４ＨＣＯ３（３）（…     

1—羟在乙叉—1,1—二膦酸铜（Ⅱ）固体配合物的研究

本文合成了六种１－羟基乙叉－１，１－二膦酸ＣＨ３Ｃ（ＯＨ）（Ｐ３Ｈ２）２与Ｃｕ的固体配合物。用元素分析和热重分析确定了这些配合物的组成Ｃｕ（Ｈ３Ｌ）２，１２Ｈ２Ｏ，Ｎａ４Ｃｕ（ＨＬ）２８Ｈ２ＯＣｕＨＬ，６Ｈ２Ｏ，Ｎａ２ＣｕＬ，５Ｈ２Ｏ，Ｃｕ２Ｌ．３Ｈ２Ｏ。用红外光变和热分析对产物的结构及热稳定性作了系统的研究。     

近几年开发的国外农药新品种（2）

四唑草胺（ｆｅｎｔｒａｚａｍｉｄｅ）ＣｌＮＮＯＮＮＯＮＣＨ３Ｃ１６Ｈ２０ＣｌＮ５Ｏ２３４９８中文通用名称四唑草胺英文通用名称ｆｅｎｔｒａｚａｍｉｄｅ（ＩＳＯ）其它名称ＢＡＹＹＲＣ２３８８;ＮＢＡ０６１化学名称４－〔２－氯苯基〕－５－氧－４,５－二氢...     

Ni~（2＋）、Fe~（2＋）和H_2PO_2~－、H_2PO_3~－在悬汞电极上的电化学行为

采用循环伏安法研究了Ｎｉ２＋、Ｆｅ２＋、Ｈ２ＰＯ２－Ｈ２ＰＯ３－在悬汞电极上的电化学行为以及Ｈ２ＰＯ２－、Ｈ２ＰＯ３－在ＫＣＬ支持电解质中的还原机理，对电沉积Ｎｉ—Ｆｅ—Ｐ非晶态合金中磷的沉积机理有进一步的认识。     

影响中间相沥青电解加氢反应因素的研究

在隔离式电解槽中,用泡沫铅（ＳＰｂ）作阴极,铂（Ｐｔ）作阳极,饮和甘汞电极（ＳＣＥ）作参考电极,以ＣＨ３ＣＮ＋Ｃ２Ｈ５ＯＨ＋Ｈ２Ｏ＿Ｂｕ４ＮＢｒ为电解体系,对由煤沥青为原料制得的中国相沥青（ＭＰ）进行电解加氢研究,当ｃ（ＣＨ３ＣＮ）：ｃ（Ｃ２ＨＯＨ）：ｃ（Ｈ２Ｏ）＝０．４：０．１：１（浓度比）,ｃ（Ｂｕ４ＮＢ４）＝０．３１ｍｏｌ／Ｌ,ｔ＝３０Ｃ,ｐ（ＭＰ）＝５０ｇ／Ｌ,阴极电解电位为－２．４Ｖ时,     

Ni^2＋,Fe^2＋和H2PO2^—,H2PO3^—在悬汞电极上的电化学行为

采用循环伏安法研究了Ｎｉ＾２＋、Ｆｅ＾２＋、Ｈ２ＰＯ２＾－、Ｈ２ＰＯ３－在悬汞电极上的电化学行为以及Ｈ２ＰＯ２＾－、Ｈ２ＰＯ３＾－在ＫＣＬ支持电解质中的不原机理，对电沉积Ｎｉ－Ｆｅ－Ｐ非晶态合金中磷的沉积机理有进一步的认识。     

铝合金电解着色槽中Sn^2^＋离子电化学行为的研究

以循环伏安法、旋转圆盘电极法及x射线分析等方法分析了亚锡离子在铝合金电解着色槽中的电化学行为,并对交流电频率、振幅等对亚锡离子电化学氧化的影响进行了讨论,实验结果表明,亚锡离子的电化学的氧化过程为扩散控制的过程。     

螺旋霉素的水／硝基苯界面循环伏安法研究及其测定

本文利用循环伏安法研究了螺旋霉素推动质子从水相向硝基苯相转移的过程，并建立了一种新的测定螺旋霉素有效含量的电化学方法     

LiFePO4锂离子电池的数值模拟：正极材料颗粒粒径的影响

LiFePO₄（LFP）作为正极材料时,锂离子电池安全性高且循环寿命长,是目前应用最广泛的正极材料,但其电池倍率性能较差。提升倍率性能的有效手段之一是将LFP材料颗粒纳米化,但材料纳米化过程中颗粒粒径减小对于锂离子电池充放电过程中锂在固液相的扩散及表面电化学反应的影响机制仍缺乏清晰的认识。采用锂离子电池的准二维模型,模拟锂离子电池的放电过程,定量研究了正极材料颗粒粒径对锂离子电池倍率性能的影响,分析了固液相扩散速率与电化学反应速率受LFP材料颗粒粒径的影响程度。研究结果表明：电极材料中固相扩散阻力是锂离子电池电化学性能的主要限制因素。小粒径的LFP作为正极材料时,电极材料内的金属锂的迁移路径较短,同时颗粒与电解液的接触面积增加,界面的电化学反应速率较快,放电倍率对于锂离子电池性能影响较小;大粒径的LFP作为正极材料时,电极材料内的金属锂扩散路径的增加和较高的固相扩散阻力限制了界面的电化学反应速率,导致锂离子电池的倍率性能显著降低。LFP材料的纳米化可以有效减小固相扩散阻力,提升锂离子电池的倍率性能。     

表面活性剂水溶液相行为研究进展

综述了关于表面活性剂溶液相行为研究的几种常用的方法和手段;介绍了表面活性剂几种复配体系相行为的研究进展;讨论了温度、盐和有机物种类等因素对表面活性剂溶液相行为的影响。     

Production of highly-sinterable rare-earth oxide powders by controlled humidity dewatering of precursors

The sintering behavior of rare-earth oxide powders produced from reverse strike hydroxide, oxalate and carbonate precursors was studied. The influences of controlled humidity dewatering of precursors on powder morphology and sintering behavior were extensively studied, and were compared with those produced by oven drying or dewatering by using organic washes (ATA method). Significant differences in behavior were observed for hydroxide- and carbonate-derived powders dewatered in different ways; oxalate-derived powders showed little behavioral dependence on dewatering method. In general, controlled humidity dewatering proved effective in leading to highly-sinterable powders from any of the three precursors investigated, ATA treatment was effective for hydroxide and oxalate precursors, and oven drying generally led to good sinterability only for oxalate-derived powders. Compaction behavior and surface area of the powders were also determined and attempts were made to correlate these characteristics with sintering behavior.     

Effect of polyethylenimine on the dispersion and electrophoretic deposition of nano-sized titania aqueous suspensions

The dispersion and electrophoretic deposition (EPD) behavior of an aqueous suspension of nano-sized titania particles stabilized with a dispersant of polyethylenimine (PEI) were systematically investigated. The adsorption behavior of PEI on the titania surfaces indicated a high affinity adsorption of PEI at a high pH value while a low affinity adsorption was observed at a low pH value, which is consistent with the viscosity behavior of the suspension. The influences of the suspension pH, the added amount of PEI and the salt addition on the electrophoretic deposition behavior of the suspensions were studied.     

锂电极表面膜的组成和阻抗行为

介绍了锂电池中锂电极的表面膜的组成和阻抗行为，并根据其表面膜的阻抗行为提出了电化学模型。     

Effects of rate and temperature on fracture behavior of TPX (poly-4-methyl-1-pentene) polymer

The fracture behavior of TPX (poly-4-methyl-1-pentene) polymer was studied using compact tension (CT) and single-edge-notch bending (SENB) specimens. Effects of crosshead rate and environmental temperature (−40°C to 160°C) on fracture behavior were investigated. Fractographic analyses were conducted after fracture tests using scanning electron microscopy (SEM). The results showed that the fracture behavior of the TPX polymer was highly dependent on crosshead rate and temperature. Unstable-stable transition of crack growth and stiky-slip behavior were observed for both low and high crosshead rates when the environmental temperature was increased.     

炭材料生产用煤沥青的流变性能

介绍了流体的特性及其表征，描述了煤沥青的流变性能及其在炭材料实际生产中的意义，综述了煤沥青流变性能研究状况。提出了炭材料生产用煤沥青流变性能研究所面临的课题。     

The relation between fiber orientation and tensile behavior in an Ultra High Performance Fiber Reinforced Cementitious Composites (UHPFRCC)

In this study, the effect of the fiber orientation distribution on the tensile behavior of Ultra High Performance Fiber Reinforced Cementitious Composites (UHPFRCC) was investigated. The tensile behavior was explored separately in two stages; pre-cracking and post-cracking tensile behaviors. Pre-cracking tensile behavior is expressed using the mechanism of elastic shear transfer between the matrix and the fiber in the composites. Post-cracking tensile behavior was expressed as the combined behavior of the resistance by the fibers and the matrix, considering a probability density distribution for the fiber orientation distribution across crack surface and a pullout model of steel fiber. The effect of the fiber orientation distribution was found to be very small on pre-cracking behavior, but to be significant on post-cracking behavior of UHPFRCC. The predicted results were compared with the experimental results, and the comparison presented satisfactory agreement.