ZnFe2O4高温煤气脱硫剂的再生

在热天平上对自制的ZnFe2O4脱硫剂进行了再生工艺研究，考察了再生温度、O2浓度对ZnFe2O4脱硫剂再生性能的影响；进行了多次硫化、再生循环实验，并与加入玻璃粉的样品进行了比较。结果表明，700℃下氧含量2.0%(vol)时再生可以获得良好的再生率和二次硫化反应活性；玻璃粉的少量加入，会改善脱硫剂长期使用的稳定性，但反应活性有所下降。     

百菌清及其三氟衍生物对番茄早疫病菌的室内抑菌活性比较

采用生长速率法测定了不同浓度的百菌清及其三氟衍生物对番茄早疫病菌Alternaria solani(Ell,et Mart.)Jones es Gmut的室内杀菌毒力。试验结果表明，百菌清及其三氟衍生物的ED50值分别为6089．89mg／L和156．43mg/L。，前者是后者的38．93倍。百菌清三氟衍生物的毒力明显高于百菌清。     

无铅压电陶瓷的研究进展

在压电陶瓷领域，无铅压电陶瓷从环保的角度考虑越来越引起人们的注意。本文主要综述了以BNT为基的3类无铅压电陶瓷体系。它们都是很好的无铅压电陶瓷的侯选材料，其中BNBT－6，BNTN－3和BNST－2的机电耦合常数K33分别为0．55，0．43，而且具有较高的频率常数和较小的介电系数，适用于众多高频超声换能检测领域以及压电致动装置等方面，所以作为无铅压电陶瓷它们是很有潜力的。     

二氨基乙腈及三胺的合成及表征

利用加成反应合成了两种新化合物二 ( 2 -腈基乙基 )氨基乙腈及三 ( 2 -腈基乙基 )胺 ,用红外光谱、1 H -NMR核磁共振谱、元素分析、ES -MS质谱及热重分析对其结构和热性质进行了表征。结果证实所制备的两种化合物即为目标化合物 ,这两种化合物热性质相似 ,在 30 0℃以下具有较好的热稳定性。     

氧化还原反应式配平中可能差错的几种情况

本文通过许多实例，指出了氧化还原反应式配平中可能出现的得失电子数不等或电荷数未配平、得失电子关系不对及反应式中酸碱性介质有错误等几种差错，并归纳了在酸碱性水溶液中平衡介质的方法。     

水热法合成(Mn,Zn)Fe_2O_4磁性晶体粉末

采用水热加工技术研究（Ｍｎ，Ｚｎ）Ｆｅ２Ｏ４晶体粉末的合成条件，对水热体系的碱度、温度、时间进行了系统实验．结果表明在ｐＨ＝７～１２．５范围内可有效合成（Ｍｎ，Ｚｎ）Ｆｅ２Ｏ４．当温度在１９０～２２０℃时，完成合成所需的时间为１～２ｈ，提高碱度有利于合成反应．本文还初步探讨了（Ｍｎ，Ｚｎ）Ｆｅ２Ｏ４的合成机理，为扩大实验提供依据．     

Pheromonal secretions from glands on the 5th abdominal sternite of hydropsychid and rhyacophilid caddisflies (Trichoptera)

Extracts of different body parts of adult Trichoptera were tested for electrophysiological activity. Extracts of the IVth and Vth abdominal sternites of femaleHydropsyche angustipennis, Rhyacophila nubila, andR. fasciata, containing a paired exocrine gland, elicited significant electroan-tennographic responses when tested on conspecific male antennae. The paired gland occurs also in males of all the species, and inH. angustipennis, extracts from males were more active than female extracts when tested on male antennae. Female and male extracts from all species were analyzed by gas chromatography with simultaneous flame ionization and electroantennographic detection (EAD). EAD-active peaks in female extracts, stimulating male antennae, were identified inH. angustipennis as nonan-2-one; and inR. nubila andR. fasciata as heptan-2-one, heptan-2-ol, nonan-2-one, and nonan-2-ol. EAD-active components from maleH. angustipennis stimulating male antennae were octan-2-one, nonan-2-one (major peak), (Z)-6-nonen-2-one, decan-2-one, and a methylbranched decan-2-one. Female extracts and synthetic mixtures of compounds identified from femaleH. angustipennis andR. fasciata were tested for attractivity in the field. High catches with control traps obscured the results, but a synthetic mixture of the four identified compounds was significantly attractive and not different from female extracts for attracting maleR. fasciata. InH. angustipennis, a synthetic six-component male blend, in which nonan-2-one was the major component, attracted significant numbers of male and femaleH. angustipennis. Extracts of maleR. nubila andR. fasciata contained acetophenone and hexanoic and octanoic acids but did not have any electrophysiological or behavioral activity on either male or female antennae of conspecifics. The occurrence of a female sex pheromone inRhyacophila and an aggregation pheromone inHydropsyche corresponds to earlier described differences in mating behaviors in the Rhyacophilidae and Hydropsychidae.     

H2O-NH3-CO2体系汽液平衡计算

本文给出计算H2O-NH3-CO2三元体系在温度323.15K～473.15K、压力0.2MPa～8.0MPa、液相NH，摩尔分率≤0.3、富氨区条件下汽液平衡的UNIQUAC模型及其参数，模型的计算结果与试验数据吻合。该模型可用于尿素生产装置中蒸发冷凝、循环吸收以及水解精馏等过程的设备计算。     

双波长分光光度法测定自来水中Fe2+和Fe3+的含量

采用双波长分光光度法测定 Fe2 和 Fe3 的方法 ,结果表明 ,在 λ1 =4 0 0 nm,λ2 =5 4 2 nm处 ,显色时间在 6 0 min～ 80 min,p H =4～ 5时能联合测定水中 Fe2 和 Fe3 ,其结果具有较高的精密度和准确度。     

乙醛酸的应用及生产方法探析

本文简要介绍了乙醛酸在精细化工领域中的应用，并对乙醛酸的制备方法进行了分析.