季(鏻)盐KP550和KP580静态杀菌性能评价及工业应用

静态杀菌试验时,KP550和KP580在1h的杀菌效果不明显,但随着时间延长杀菌性能增强,持续时间长;在一定范围内KP550、KP580的pH及温度适用范围均较广.工业应用中KP550和KP580可作为剥离剂使用,在低质量浓度20 mg时即具有较好的剥离效果和一定的杀菌效果.     

季(鏻)盐KP550杀菌性能及对水处理药剂性能的影响

研究了季(鏻)盐杀菌剂KP550在不同pH、温度、作用时间下对异养菌的杀菌效果以及对常用水处理药剂缓蚀、阻垢性能的影响.结果表明:KP550对异养菌的杀菌率达到99.99%,且杀菌作用持续时间长;KP550对HEDP、PBTCA和T-225的CaCO3阻垢性能、磺酸盐共聚物的Ca3(PO4)2阻垢性能,以及T-225和...     

微波辅助法合成KP550

使用微波辅助合成了水处理剂KP550(十四烷基三丁基氯化),考察了原料物质的量比、反应时间、反应温度、溶剂及其用量对产率的影响,并通过核磁、红外、质谱对产物进行表征。在最优合成条件下产率可达88.8%,传统加热法产率仅为59.9%。与传统加热法相比,微波辅助合成法合成KP550的反应时间大大缩短,产率显著提高,具有反应速度快、操作简单、溶剂用量少等优点。     

高粘度橡胶油KP6035在EPDM胶辊中的应用

研究高粘度橡胶油KP6035在EPDM胶辊中的应用效果,并与国外同类产品进行对比。试验结果表明,橡胶油KP6035的硫、氮和芳烃含量小,与EPR的相容性较好,具有良好的光氧化稳定性和耐热空气老化性能;加入橡胶油KP6035的EPDM胶料各项物理性能均与国外参比油胶料相当;所制造的EPDM胶辊表面无油析出,且不污染纸张,摩擦力日变化率小,完全可以替代进口同类产品。     

环保型高粘度橡胶油KP6030在汽车密封条中的应用

介绍环保型高粘度橡胶油KP6030的性质特点及其在汽车密封条中的应用效果，并与国外同类产品进行对比。橡胶油KP6030具有颜色浅、饱和烃含量高、芳烃含量低、挥发损失小、倾点低、与EPDM相容性好、健康环保等优点。在汽车密实胶和海绵胶密封条中的应用结果表明，KP6030与胶料相容性好，两种胶料的各项物理性能均与国外参比油胶料相当，可以替代同类进口油。     

克拉夫点（KP）与cmc,πmax的关系

克拉夫点（KP）是表面活性剂的基本属性，在表面活性剂溶液研究中起着重要的作用。本文着重讨论KP与临界胶束浓度（cmc）及降低表面张力的最大效能（π_(max)）之间的关系。指出表面活性剂只有在体系温度≥KP的条件下使用时，才能形成胶束和达到降低表面张力的最大效能。     

KP1耐酸耐热胶泥及其应用

KP1胶泥采用硅酸钾为粘结剂、高分子磷酸盐为固化剂、硅铝酸盐为耐酸耐热添料,其化学稳定性、机械强度和耐热性明显优于以硅酸钠为粘结剂、氟硅酸钠为固化剂的传统的硅酸盐胶泥。文中列举了两类胶泥的性能比较,详述了KP1胶泥的施工要求。     

高氯酸钾复合推进剂的耐温性

用差示扫描量热法(DSC)、热重法(TG)和耐温试验,研究了含高氯酸钾(KP)复合推进剂的热分解行为和耐温性。结果表明,在290~450℃,KP复合推进剂先发生KP吸热晶型转变,黏合剂体系放热分解,质量损失约30%;在450~550℃,KP完全熔融和分解,推进剂质量损失约84.5%,放热量为2 633J/g。KP复合推进剂在180℃下保温48h后各项性能变化很小,可以用于深层油气井压裂弹。     

抗疲劳剂KP在矿山用全钢载重子午线轮胎胎面胶中的应用

研究抗疲劳剂KP在矿山用全钢载重子午线轮胎胎面胶中的应用,并与抗疲劳剂G-108进行对比。结果表明:在矿山用全钢载重子午线轮胎胎面胶中用抗疲劳剂KP等量替代抗疲劳剂G-108,胶料的加工性能、耐磨性能、耐高温动态疲劳性能、耐热老化和动态臭氧老化性能以及抗撕裂性能明显提高,压缩永久变形和压缩生热降低,滚动阻力减小,抗湿滑性能改善;成品轮胎通过耐久性测试。     

悬浮填料——KP珠用于污水处理的研究

选用近几年已在日本推广使用的悬浮性填料——KP珠作为研究对象，对其生物挂膜，污水COD、氨氮、总氮等指标的去除进行研究，验证其在生化法处理中高效的生物活性以及对污染物质去除的可靠性，为该悬浮填料在我国的推广起到借鉴作用。     

E—An—76对桦木硫酸盐浆无氯漂白流程的影响

本文研究了半纤维素酶E—An—76对桦木硫酸盐浆无氯漂白流程的影响．研究结果表明：在桦木硫酸盐浆OEDP漂白过程中插入E－An－76组成的OXEDP流程与原漂程比较，可节省大量化学漂剂的用量而保持白度和得率。     

硫酸盐制浆废水的厌氧生物处理

本文是对用厌氧生物法处理酸盐制浆废水的一次尝试。实验证明,只要控制好合适的微生物生长环境。即使是在高浓、难以暴气处理的硫酸盐制浆废水中厌氧菌也能很好地生长,消化分解一部分有机物。发酵过程中,温度应控制在40℃以上,最佳pH值为7.0或略高于7.0,而滞留时间可视废水处理的工艺要求而定。厌氧发酵处理硫酸盐制浆废水可作为一种治理环境的手段,如果要从产甲烷的角度考虑,就必须排除硫对甲烷菌的干扰,或者优选出单纯的抗硫菌,本文采用酸化法除硫产生了一定的效果。     

Combustion Aspects of Sodium Azide and its mixtures with potassium perchlorate and burning catalysts

Linear burning rate, thermal aualysis, temperature profile, flame structure and cryogenic burnability for the mixtures of sodium azide (SA) of different particle sizes (3.5 μm, 22 μm, and 67 μm), potassium perchlorate (KP) and with or without three kinds of burning catalysts (GeO₂, Er₂O₃, and Y₂O₃) have been investigated. The linear burning rates increase with the KP content up to 33Wt% for similar SA particle size. The temperature-time histories in the vicinity of burning surface were obtained with 20 μm Type K thermocouple embedded in a Strand. The burning surface temperaturres of neat SA and of the SA/KP mixtures are nearly 350°C and 350°C ∼ 550°C, respectively, while the existence of the decomposition surface at 250 °C and condensed layer was suggested with SA/KP mixtures. In visual observation for the flame structure, the front of luminous flame zone appers to be in contact with the condensed phase surface. For example, however, the temperature profile suggests that there exists finitc distance from decomposition surface to flame front in the order of 0.05 mm ∼ 0.1 mm at 1 MPa for SA/KP = 80/20. The differential thermal analysis indicates that the tested catalysts have retarding effect on SA combustion, but a positive effect on neat KP decomposition in spite of being impotent for the burning rate increase of the SA/KP mixture. It was also found that SA strands containing appropatiae fractions of KP can hurn even in liquid nitrogen.     

Anticancer Ruthenium(III) Complex KP1019 Interferes with ATP‐Dependent Ca2+ Translocation by Sarco‐Endoplasmic Reticulum Ca2+‐ATPase (SERCA)

Sarco‐endoplasmic reticulum Ca²⁺‐ATPase (SERCA), a P‐type ATPase that sustains Ca²⁺ transport and plays a major role in intracellular Ca²⁺ homeostasis, represents a therapeutic target for cancer therapy. Here, we investigated whether ruthenium‐based anticancer drugs, namely KP1019 (indazolium [trans‐tetrachlorobis(1H‐indazole)ruthenate(III)]), NAMI‐A (imidazolium [trans‐tetrachloro(1H‐imidazole)(S‐dimethylsulfoxide)ruthenate(III)]) and RAPTA‐C ([Ru(η⁶‐p‐cymene)dichloro(1,3,5‐triaza‐7‐phosphaadamantane)]), and cisplatin (cis‐diammineplatinum(II) dichloride) might act as inhibitors of SERCA. Charge displacement by SERCA adsorbed on a solid‐supported membrane was measured after ATP or Ca²⁺ concentration jumps. Our results show that KP1019, in contrast to the other metal compounds, is able to interfere with ATP‐dependent translocation of Ca²⁺ ions. An IC₅₀ value of 1 μM was determined for inhibition of calcium translocation by KP1019. Conversely, it appears that KP1019 does not significantly affect Ca²⁺ binding to the ATPase from the cytoplasmic side. Inhibition of SERCA at pharmacologically relevant concentrations may represent a crucial aspect in the overall pharmacological and toxicological profile of KP1019.     

Bright two-photon emission and ultra-fast relaxation dynamics in a DNA-templated nanocluster investigated by ultra-fast spectroscopy

Metal nanoclusters have interesting steady state fluorescence emission, two-photon excited emission and ultrafast dynamics. A new subclass of fluorescent silver nanoclusters (Ag NCs) are NanoCluster Beacons. NanoCluster Beacons consist of a weakly emissive Ag NC templated on a single stranded DNA ("Ag NC on ssDNA") that becomes highly fluorescent when a DNA enhancer sequence is brought in proximity to the Ag NC by DNA base pairing ("Ag NC on dsDNA"). Steady state fluorescence was observed at 540 nm for both Ag NC on ssDNA and dsDNA; emission at 650 nm is observed for Ag NC on dsDNA. The emission at 550 nm is eight times weaker than that at 650 nm. Fluorescence up-conversion was used to study the dynamics of the emission. Bi-exponential fluorescence decay was recorded at 550 nm with lifetimes of 1 ps and 17 ps. The emission at 650 nm was not observed at the time scale investigated but has been reported to have a lifetime of 3.48 ns. Two-photon excited fluorescence was detected for Ag NC on dsDNA at 630 nm when excited at 800 nm. The two-photon absorption cross-section was calculated to be ～3000 GM. Femtosecond transient absorption experiments were performed to investigate the excited state dynamics of DNA-Ag NC. An excited state unique to Ag NC on dsDNA was identified at ～580 nm as an excited state bleach that related directly to the emission at 650 nm based on the excitation spectrum. Based on the optical results, a simple four level system is used to describe the emission mechanism for Ag NC on dsDNA.     

掺铈纳米TiO_2薄膜的光催化灭菌性能研究

采用溶胶-凝胶法制备了具有较高催化灭菌活性的掺铈纳米TiO2薄膜,并用XRD、HRTEM等手段进行了表征,研究其膜的结构和特性。试验表明:铈的掺杂能有效提高纳米TiO2薄膜的光催化灭菌能力,在热处理温度为550℃,掺铈质量分数(m(Ce)/m(TiO2))为3%条件下,其杀灭大肠杆菌率为96.3%。     

固载二氧化氯的杀菌特性及其应用研究

以自行设计的C lO2释放量测定装置,测定了固载C lO2在不同空间中的释放量,以自然落菌法、稀释平板倾注法确定C lO2气体杀菌率,考察了固载二氧化氯释放时间、气体浓度与杀菌率间的关系和固载C lO2对多个菌种的杀菌效果。研究表明:对大肠杆菌,C lO2气体浓度仅需0.31~0.36 mg/m3,杀菌1 h,杀菌率可达到99.55%;当C lO2气体浓度在1.64~1.78 mg/m3内,欲达到100%的杀菌率,霉菌所需有效作用时间小于2 h;而枯草芽孢杆菌要达到4.5 h以上。在有效空间内,C lO2气体杀菌的浓度控制在100~1500μg/m3之间有较好杀菌效果。     

新型双季铵盐杀菌剂的合成及其杀菌性能研究

以乙二胺、甲酸、甲醇和氯乙酸乙酯为原料,合成了双季铵盐杀菌剂,以绿藻为模型,探讨了双季铵盐的浓度和投加时间对其杀菌性能的影响。结果表明,当双季铵盐的浓度为0.3 g/mL时,杀菌效果较好,3 d可实现79.25%的杀菌率,且投加时间越长,灭菌效果越显著。     

生物质快速热解制油试验及流程模拟

使用自主研发的流化床热解反应器对生物质热解制油进行实验研究,通过对不同实验温度450、500、525、550、580、610℃下得到的目标产物进行分析,得到了反应温度对生物油产率的影响规律。实验表明：550℃时,最大液体产率为42.5%（质量）;实验得到的不可冷凝气体的组分以CO、CO₂、CH₄和H₂为主,气相产物产率约为37.7%（质量）。在实验基础上,利用Aspen Plus流程模拟软件,建立了生物质热解制油工艺模拟流程,模拟分析了热解温度对生物油产率的影响,结果表明该模型能准确模拟实际热解过程,具有较好的适用性和可靠性。     

Effect of Water Vapor on Dielectric Loss in MgO

A dielectric loss study of porous MgO indicates that H₂O absorption on MgO probably leads to the formation of surface defects as well as hydroxide ions. The ac conductivity, σ_ac followed the equation σ_ac=σ₁ + KP _H2O^0.27 from 550° to 800°C when the water partial pressure was varied between 7 × 10⁻⁵ and 3 × 10⁻² atm.