Novel ruthenium sensitizer with multiple butadiene equivalent thienyls as conjugation on ancillary ligand for dye-sensitized solar cells

A heteroleptic polypyridyl ruthenium complex ‘cis-Ru(4,4′-bis(3,5-bis(5-hexylthiophen-2-yl)phenyl)-2,2′-bipyridine)(4,4′-dicarboxyl-2,2′-bipyridine) (NCS)₂, MC102′, with a high molar extinction coefficient was synthesized and characterized with IR, ¹H NMR, Mass, UV–Vis spectroscopy. The test cell DSSC devices constructed with 0.23 cm² active area photo-electrode in combination with an electrolyte composed of 0.6 M dimethylpropyl-imidazolium iodide (DMPII), 0.05 M I₂, and 0.1 M LiI in acetonitrile yielded solar to electric energy conversion efficiency (η) of 4.42% under Air Mass (AM) 1.5 sunlight, while the reference N719 sensitized solar cell fabricated and evaluated under similar conditions exhibited η-value of 5.84%.     

Large-eddy structures of turbulent swirling flows and methane-air swirling diffusion combustion

Turbulent swirling flows and methane-air swirling diffusion combustion are studied by large-eddy simulation (LES) using a Smagorinsky-Lilly subgrid scale turbulence model and a second-order moment (SOM) SGS combustion model, and also by RANS modeling using the Reynolds Stress equation model with the IPCM+wall and IPCM pressure-strain models and SOM combustion model. The LES statistical results for swirling flows give good agreement with the experimental results, indicating that the adopted subgrid-scale turbulence model is suitable for swirling flows. The LES instantaneous results show the complex vortex shedding pattern in swirling flows. The initially formed large vortex structures soon break up in swirling flows. The LES statistical results of combustion modeling are near the experimental results and are as good as the RANS-SOM modeling results. The LES results show that the size and range of large vortex structures in swirling combustion are different from those of isothermal swirling flows, and the chemical reaction is intensified by the large-eddy vortex structures. The project supported by the Special Funds for Major State Basic Research (G-1999-0222-07). The English text was polished by Keren Wang.     

一族沿曲面的解析极大函数的弱型估计

设Ｄｘ是一族给定的分布且满足＜Ｄ－１,Ｆ＞＝Ｆ（１）,定义一族极大函数Ｍｘ其中ｆ上许瓦兹函数     

A Pilot Study of Rare Renal Amyloidosis Based on FFPE Proteomics

Renal amyloidosis typically manifests albuminuria, nephrotic-range proteinuria, and ultimately progresses to end-stage renal failure if diagnosed late. Different types of renal amyloidosis have completely different treatments and outcomes. Therefore, amyloidosis typing is essential for disease prognosis, genetic counseling and treatment. Thirty-six distinct proteins currently known to cause amyloidosis that have been described as amyloidogenic precursors, immunohistochemistry (IHC) or immunofluorescence (IF), can be challenging for amyloidosis typing especially in rare or hereditary amyloidosis in clinical practice. We made a pilot study that optimized the proteomics pre-processing procedures for trace renal amyloidosis formalin-fixed paraffin-embedded (FFPE) tissue samples, combined with statistical and bioinformatics analysis to screen out the amyloidosis-related proteins to accurately type or subtype renal amyloidosis in order to achieve individual treatment. A sensitive, specific and reliable FFPE-based proteomics analysis for trace sample manipulation was developed for amyloidosis typing. Our results not only underlined the great promise of traditional proteomics and bioinformatics analysis using FFPE tissues for amyloidosis typing, but also proved that retrospective diagnosis and analysis of previous cases laid a solid foundation for personalized treatment.     

“学为主体”在微课教学中的体现

“学为主体,教为主导”的教学理念已经在现代教学中得到广泛推广,但是对于以短视频为主要呈现形式的微课,由于其教学方式与传统教学有很大不同,具有不直接与学员交流的特点,教师在教学设计的全过程中往往会忽视“学为主体”的体现。本文结合现代微课的特征和教学过程,分析了微课教学中“学为主体”理念的必要性和体现方式,对“学为主体”教学理念在微课教学中的实践进行了探索。     

模板剂四乙基氢氧化铵的用量对合成的β沸石结构及脱胺的影响

研究四乙基氢氧化铵（TEA-OH）模板剂用量对合成的β沸石的结构及脱胺行为的影响。合成β沸石的模板剂的较佳用量(TEA+/Al)为2.10～1.68,合成的β沸石的相对结晶度均大于84%;β沸石中的铝含量(Al/Al+Si)及骨架铝含量(TdAl/TdAl+OhAl)随晶化混合液的TEA+/Al而变,存在最佳TEA+/Al点为1.9,此时合成的β沸石非骨架铝量最少,结构硅铝比最高;含TEA的β沸石脱胺过程为Hofmann降解反应,TGA测定的失重量、DSC测定的吸热量与β沸石中TEA含量密切相关.     

富硒香菇中微量元素硒的含量测定

以香菇为载体,通过在培养基中加入一定质量浓度的复合硒溶液进行富硒栽培,获得了富硒香菇,并成功提取出香菇硒多糖,应用2,3-二氨基萘荧光分光光度法测定了富硒香菇中的硒含量,方法简单,结果可靠。     

脉动真空灭菌器常见故障处理与维护

脉动真空灭菌器主要由柜体、柜门、搬运车、管路系统和控制系统等组成。它以饱和蒸汽为介质,在高温高压下,根据需要设定脉动次数,达到消毒灭菌效果。脉动真空灭菌器作为压力容器,在灭菌过程中承载着温度载荷,压力载荷等特殊情况,由此导致一些故障的发生。本文主要从脉动真空灭菌器的屏、泵、气三个主要方面的故障类型,进行检查排除处理以及维护方面来进行分析处理。灭菌器能否正常运行,直接关系到医疗器材物品灭菌成败,影响各个科室正常工作的进行。因此加强故障处理和日常维护,不仅可以提高工作效率,也能最大限度降低故障发生的概率。     

金属卟啉检测室内空气挥发性有机污染物浓度的性能研究

以四苯基卟啉(TPP)为起始物,通过金属插入反应,获得FeTPP、ZnTPP、CoTPP、MnTPP。以合成的金属卟啉为检测器,测定了其检测甲苯、三乙胺、丙醛、异丙醇等浓度的检测限及灵敏度。结果表明,CoTPP检测甲苯、丙醛较好,而FeTPP检测三乙胺、异丙醇较好,MnTPP、ZnTPP对4种物质都有响应,但特异性不强,且灵敏度都较低;CoTPP只对甲苯和丙醛有响应,特异性强,且灵敏度高。     

纤维级氢氧化镁阻燃体系研究

采用一种天然矿物纤维，经特殊加工改性，制成纤维级氢氧化镁，探讨了其与高分子材料的复合性，阻然，消烟，增强等作用，并以硼酸，硬脂酸和有机硅化物为阻然增效剂，ＬＤＰＥ为基体树脂制作作了低烟阻燃材料，产品性能接近于ＥＷＣＺ－６２８７－１产品指标。