二次氮化法制备γ′－Fe_4N超细粉末

以ＦｅＣｌ＿２·ｎＨ＿２Ｏ和ＮＨ＿３为原料，采用一步气相合成法制备了Ｆｅ／Ｎ超细粉末，并研究了二次氮化法制备氮化铁超细粉末的工艺技术。通过比较实验，证实二次氮化法能够制备单相的γ′－Ｆｅ＿４Ｎ粉末。利用ＸＲＤ、ＴＥＭ、ＸＰＳ和ＶＳＭ等实验手段对Ｆｅ／Ｎ和γ′－Ｆｅ＿４Ｎ粉末的晶态、物相、形貌、成分、粒度和磁性进行了初步表征。实验结果表明，二次氮化法制得的γ′－Ｆｅ＿４Ｎ为高纯、超细、单相的粉末，并且粉末的饱和磁化率σ＿３和矫顽力Ｈｃ值均优于田中隆夫等人的同类研究结果。     

3,3‘—二甲基4,4’—二氨基二苯甲烷合成路线

３．３‘－二甲基４．４’－二氨基二苯甲烷应用广泛，虽然用量不大，但目前国内尚需进口。本文介绍了ＭＤＴ的应用途径及合成路线，以促进ＭＤＴ的开发利用。     

DADMT在浇注型聚氨酯弹性体中的应用研究

以２，４－二氨基－３，５－二甲硫基甲苯（ＤＡＤＭＴ）代替传统的３，３′－二氯－４，４′二氨基二苯基甲烷（ＭＯＣＡ）作为浇注型聚氨酯弹性体的固化剂，考察了聚酯型，聚醚型，羟丁型聚氨酯弹性体的力学性能及耐介质性能，实验表明，ＤＡＤＭＴ是ＭＯＣＡ较理想的代用品。     

4，4′—苯二甲酰基双—PMP的质谱及其稳定性研究

本文对三个新型螯合萃取剂──４，４′—苯二甲酰基双—ＰＭＰⅠ～Ⅲ的质谱中代表化合物的主要碎片离子的裂解过程、分子离子峰的强度及其稳定性等进行了分析和研究，发现Ｍ＋丰度的大小与试剂的稳定性呈线性关系。     

3,3′-二氯-4,4′-二氨基二苯基甲烷的合成

本文报道了多聚甲醛和邻氯苯胺反应合成３，３′二氯４，４′二氨基二苯基甲烷的合成方法。结果表明用多聚甲醛代替甲醛水溶液，可使反应时间缩短，操作简便，收率有较大提高。     

2－（3，4，5－三甲氧基）苯基4，9－二氢外庚并吡喃－4，9－二酮的一步合成

在原甲酸三乙酯和高氯酸的存在下，３－乙酰基酚酮１与３，４，５－三甲氧基苯甲醛（ＴＭＢ）２反应一步得到２－（３，４，５－三甲氧基）苯基－４，９－二氢环庚并吡喃－４，９－二酮３。化合物３为尚未见文献报道的新化合物，其结构经红外光谱、核磁共振谱及元素分析证实。     

3－乙酸基酚酮与芳醛缩合反应的研究

本文探讨了３－乙酰基酚酮与ＴＭＢ等芳香醛的羟醛缩合反应。３－乙酰基酚酮与ＴＭＢ、、丁香醛、胡椒醛等取代醛反应分别生成３－（３，４，５－三甲氧基）肉桂酰基酚酮、３－（４－羟基－３，５－二甲氧基）肉桂酰基酚酮、３－（３，４－亚甲二氧基）肉桂酰基酚酮。与桂皮醛反应生成３－（５－苯基－２，４－戊二烯酰基）酚酮等４种尚未见文献报道的新化合物。其结构经红外光谱、核磁共振谱及元素分析得以证实。     

二安替比林基─（3，4─亚甲二氧基）苯基甲烷光度法测定微量钒（Ⅴ）

合成了胡椒醛与安替比林的缩合产物─—二安替比林基－（３，４－亚甲二氧基）苯基甲烷（ＤＡＤＭＰＭ），研究了ＤＡＤＭＰＭ与钒（Ⅴ）的显色反应。于磷酸介质中，在Ｍｎ（Ⅱ）和吐温－４０的存在下，钒（Ⅴ）与ＤＡＤＭＰＭ反应生成橙黄色化合物，最大吸收波长λｍａｘ为４７Ｏｍｍ，摩尔吸光系数ε为３．２１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１和２．５７×１０￣５Ｌ·ｍｏｌ－１·ｃｍ－１，钒（Ⅴ）的量在０．２～３．Ｏμｇ／２５ｍＬ及３．０～９．Ｏμｇ／２５ｍＬ间符合比尔定律。可用于中草药中微量钒（Ⅴ）的测定。     

4，4′-N，N′-二苯甲烷双柠康酰亚胺的合成与表征

柠康酸酐与4，4′-MN′-二氨基二苯甲烷反应得到4，4′-N，N′-二苯甲烷双柠康酰胺酸（AMIC），再以共沸脱水法制得4，4′-MN′-二苯甲烷双柠康酰亚胺（BCI）。结果表明，柠康酸酐与MDA的反应以温度35—40℃、每摩尔MDA配溶剂2．5L为佳。利用傅立叶转换红外光谱仪、核磁共振仪、元素分析仪和差示量热计等仪器对BCI进行了表征．证明与预想结构相符。选定的合成条件有效地克服了转位副反应．是制备BCI的一条较好的工艺路线。所得BCI纯度高达94％，其固化物有较好的耐热性。     

6,7-二氨基-2-(2′,4′-二甲基)苯基-1H-苯并[de]异喹啉-1,3(2H)-二酮的合成

苊经发烟硝酸硝化，稀硝酸氧化得到６，７－二硝基－１Ｈ，３Ｈ－萘并［１，８－ｃｄ］吡喃－１，３－二酮，它与２，４－二甲基苯胺缩合后用氯化亚锡还原得到６，７－二氨基－２－（２′，４′－二甲基）苯基－１Ｈ－苯并［ｄｅ］异喹啉－１，３（２Ｈ）－二酮。与６－氨基－２－（２′，４′－二甲基）苯基－１Ｈ－苯并［ｄｅ］异喹啉－１，３（２Ｈ）－二酮（Ｃ．Ｉ．溶剂黄４４，或Ｃ．Ｉ．分散黄１１）相比，其在ＤＭＦ中的最大吸收波长红移了１７．６ｎｍ，最大荧光波长蓝移了４２．７ｎｍ，荧光量子产率有所增大。     

Dietary Marine-Derived Tocopherol has a Higher Biological Availability in Mice Relative to Alpha-Tocopherol

The biologic availability of two kinds of tocomonoenols, marine-derived tocopherol (MDT) and α-tocomonoenol, was investigated in ICR mice. Vitamin E-deficient ICR mice were fed MDT and α-tocomonoenol together with α-tocopherol, β-tocopherol, γ-tocopherol, and δ-tocopherol, and storage in liver, spleen, lung, and brain was quantified using reverse-phase high-performance liquid chromatography. The vitamin E relative biologic availability (VE-RBA) in liver was 100 for α-tocopherol, 26 ± 3 for β-tocopherol, 4 ± 2 for γ-tocopherol, not detected for δ-tocopherol, 49 ± 6 for MDT, and 30 ± 7 for α-tocomonoenol. The VE-RBA in brain was 100 for α-tocopherol, 5 ± 2 for β-tocopherol, not detected for γ-tocopherol and δ-tocopherol, 8 ± 1 for MDT, and 4 ± 1 for α-tocomonoenol. Tocopherols and tocomonoenols did not accumulate in the spleen or lung. MDT and α-tocomonoenol had high VE-RBA values. The VE-RBA value for MDT was much higher than that for β-tocopherol.     

Synthesis of 3,3′-dimethyl-4,4′-diaminodiphenylmethane catalyzed by zeolites replacing mineral acids

Synthesis of 3,3′-dimethyl-4,4′-diaminodiphenylmethane (MDT) from o-tolylamine and formaldehyde over zeolites was investigated. Among the three tested zeolites, Hβ showed higher catalytic activity than HY and HZSM-5 for MDT synthesis. In the case of Hβ as a catalyst, the effects of feed composition, reaction time and temperature on the yield and selectivity of product MDT were further examined to optimize process conditions. In an o-tolylamine:formaldehyde = 8:1 molar ratio, the two-step reaction running at 413 K for 0.5 h and then 433 K for 0.5 h gave the MDT yield of 87.5%.     

Synthesis and effects of MDT silicone resin on PMPS‐based ablative composites

A novel methylphenyl silicone resin, with M, D, and T units, was synthesized by cohydrolysis and cocondensation method from dimethyldimethoxysilane (Me₂Si(OMe)₂), phenyltrimethoxysilane (PhSi(OMe)₃), hexamethyldisiloxane, and 1,3‐divinyl‐1,1,3,3‐tetramethyldisiloxane in toluene/water mixture catalyzed by hydrochloric acid and trifluoromethanesulfonic acid. The vinyl end‐capped MDT silicone resins were chosen for reinforcement filler to enhance the mechanical properties of silicone‐based ablative composites. The effects of resins with various R/Si ratios, vinyl content, and loadings on mechanical properties of PMPS rubbers were investigated. It was revealed that on the premise of good fluidity and processing performance, MDT resin showed excellent reinforcing effect and thermal stability compared with silica. MDT reinforced ablative composite showed satisfactory mechanical and antiablative properties. The linear ablation rate was 0.01 mm/s, which maybe associated with high yield of charred residue in thermogravimetric analysis results. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41571.     

新型电缆式地层测试器技术方案研究

本文以MDT电缆式地层测试器为依据,针对性的设计了国产化的新型电缆式地层测试器的技术方案。主要设计了新型电缆式地层测试器的主要功能模块;系统组成;关键的技术指标;该仪器的技术特点及液压动力设计方案。通过理论计算和相关的实验研究证明该设计方案切实可行。     

牡丹花蕾提取物体外抗氧化、美白活性研究

研究牡丹花蕾提取物的体外抗氧化及美白活性。利用DPPH自由基清除实验检测其抗氧化能力,利用酪氨酸酶活性抑制实验及B16F10细胞黑色素生成抑制实验评估其美白活性。结果表明,MDT和MD30具有较强的抗氧化及美白活性。     

光学技术在井下流体分析中的应用

MDT模块式地层动态测试仪井下流体分析模块,采用流体对电磁光谱中的可见光和近红外线光吸收的差异来区分出油管线中的流体,能够实现对井下对地层流体成分进行实时分析、判断各成分的含量,对地层中的原油准确取样,在油气田勘探开发中将起到重要作用。     

Design and optimization of alginate−chitosan−pluronic nanoparticles as a novel meloxicam drug delivery system

The inflammation and pain associated with osteoarthritis are treated with nonsteroidal anti‐inflammatory drugs (NSAIDs). This treatment is accompanied by several side effects; therefore local intra articular (IA) NSAID injection can be more efficient and safe than systemic administration or topical use. In this study, alginate?chitosan?pluronic nanoparticles were considered as a new vehicle for IA meloxicam delivery. These novel nanoparticles were prepared using an ionotropic gelation method and were optimized for variables such as alginate to chitosan mass ratio, pluronic concentration, and meloxicam concentration using a 3‐factor in 3‐level Box‐Behnken design. To optimize the formulation, the dependent variables considered were particle size, zeta potential, entrapment efficiency, and mean dissolution time (MDT). The nanoparticles morphology was characterized by FESEM and AFM. The potential interactions of the drug‐polymers were investigated by ATR‐FTIR and DSC, and the delivery profile of meloxicam from the nanoparticles was obtained. The average particle size of the optimized nanoparticles was 283 nm, the zeta potential was ?16.9 mV, the meloxicam entrapment efficiency was 55%, and the MDT was 8.9 hours. The cumulative released meloxicam amount from the composite nanoparticles was 85% at pH 7.4 within 96 h. The release profile showed an initial burst release followed by a sustained release phase. The release mechanism was non‐Fickian diffusion. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42241.     

Application of experiment planning methods to investigation of the metal-sulfuric acid solution system

Conclusions An attempt has been made to apply the method of mathematical experiment planning in a study of the metal-solution system, with subsequent computer treatment of numerical information.A stimulating effect of H₂S along with the H₂SO₄ has been demonstrated in a model solution of the plasticizing bath. For the first time, the action of PEG-35 as a component which activates the anodic process of solution of 06KhN28MDT alloy, and an opposite action of Berolvisco 314 has been defined. Their roles differ in establishing the potential of the alloy; PEG-35 displaces in the positive direction; Berol-visco 314 displaces it in the negative direction.The contributions of the components of the medium and of temperature to the total value of the anodic current density at the potential for the onset of passivation of 06KhN28MDT alloy and of its corrosion potential have been differentiated.The application of various plans and of a computer has made it possible to obtain equations which adequately reflect connections in the metal-solution system with a minimum expenditure of effort and time.Translated from Khimicheskie Volokna, No. 2, pp. 43–46, March–April, 1987.     

Network Pharmacology Study on Morus alba L. Leaves: Pivotal Functions of Bioactives on RAS Signaling Pathway and Its Associated Target Proteins against Gout

M. alba L. is a valuable nutraceutical plant rich in potential bioactive compounds with promising anti-gouty arthritis. Here, we have explored bioactives, signaling pathways, and key proteins underlying the anti-gout activity of M. alba L. leaves for the first-time utilizing network pharmacology. Bioactives in M. alba L. leaves were detected through GC-MS (Gas Chromatography-Mass Spectrum) analysis and filtered by Lipinski’s rule. Target proteins connected to the filtered compounds and gout were selected from public databases. The overlapping target proteins between bioactives-interacted target proteins and gout-targeted proteins were identified using a Venn diagram. Bioactives-Proteins interactive networking for gout was analyzed to identify potential ligand-target and visualized the rich factor on the R package via the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway on STRING. Finally, a molecular docking test (MDT) between bioactives and target proteins was analyzed via AutoDock Vina. Gene Set Enrichment Analysis (GSEA) demonstrated that mechanisms of M. alba L. leaves against gout were connected to 17 signaling pathways on 26 compounds. AKT1 (AKT Serine/Threonine Kinase 1), γ-Tocopherol, and RAS signaling pathway were selected as a hub target, a key bioactive, and a hub signaling pathway, respectively. Furthermore, three main compounds (γ-Tocopherol, 4-Dehydroxy-N-(4,5-methylenedioxy-2-nitrobenzylidene) tyramine, and Lanosterol acetate) and three key target proteins—AKT1, PRKCA, and PLA2G2A associated with the RAS signaling pathway were noted for their highest affinity on MDT. The identified three key bioactives in M. alba L. leaves might contribute to recovering gouty condition by inactivating the RAS signaling pathway.     

LED封装用UV光固化硅树脂的制备及性能研究

通过水解-缩聚制备了不同分子结构的巯基硅树脂(MDT-SH),并将MDT-SH与乙烯基硅树脂和光引发剂配合,制备了紫外(UV)光固化硅树脂;然后对UV光固化树脂的光固化动力学进行了研究,对光固化制品的热稳定性、透光性和封装性能进行了详细分析。结果表明,当有机基团与硅的比值(R/Si)为1.88,巯基含量为0.34 mol/100 g时,MDT-SH硅树脂的相对分子质量分布较均匀且产率较高;当光引发剂2,4,6-三甲基苯甲酰基膦酸乙酯(TPO-L)的含量为1.0%、辐照强度为80 mW/cm^2、巯基与乙烯基摩尔比(SH/Vi)为1.5/1时,树脂可较快速交联成型;UV光固化树脂不仅具有优异的透光率和耐热性,且其封装发光二极管(LED)器件的性能明显优于市售道康宁封装胶OE-6550;有望替代传统热固型LED封装胶,实现规模化使用。