糖尿病患者血清中钙镁锌铜锰含量的研究

测定了１１例糖尿病患者血清中钙，镁，锌，铜，锰的含量，与对照组比较，结果表明，血清钙，镁的含量降低，血清铜的含量升高，血清锌和锰的含量降低。上述元素可用于糖尿病的辅助诊断与防治。     

七种香烟中锌,铜,铁,锰,镍含量的分析

用原子吸收法测定了７种香烟的５种微量元素的含量，结果表明，７种香烟中锌，铜，锌，锰，镍的含量存在的较大差异，其中以铁，锰含量较丰富，镍含量较少，本测定为探讨香烟中的微量元素与疾病的关系提供了有用数据。     

化橘红与其它产地橘红元素含量的比较分析

用原子吸收分光光度法测定了三个不同产地橘红的元素含量，并比较了它们之间各种元素含量的差异。结果表明，化州橘红的Ｃｕ，Ｃａ含量显著低于其它产地橘红，而其它元素含量差异不大。     

引种地、采收期及药用部位对槟榔微量元素含量的影响

以等离子体发射光谱法测定了槟榔中２０种微量元素含量．结果表明，广州产槟榔所含１１种人体必需微量元素含量与进口摈榔接近，Ｐｂ、Ｃｄ、Ａｓ含量较低．槟榔不同部位微量元素含量均有显著差异。未成熟的槟榔种子微量元素含量与成熟种子有显著差异，其Ｐｈ含量达２．２１×１０－６，为成熟种子Ｐｂ含量的２０倍。     

8种花岗岩金属元素含量测定及比较研究

报道了８种花岗岩的金属元素含量，并比较了不同品种花岗岩的金属元素含量的差异，结果发现它们分别呈现非常显著性差异，显著性差异和无显著性差异。花岗岩中铅的含量很高，镉的含量也较高，故使用时应加以注意。     

高空缺氧条件下DPH对脑铁,锌及MDA含量的影响

和原子吸收法测定了高空缺氧条件下ＤＰＨ对大鼠脑组织铁、锌含量的影响，并测定了脑ＭＤＡ含量。结果显示：对照组在高空缺氧条件下，脑组织铁含量明显高于用药组，而脑锌含量明显低于用药组。脑组织ＭＤＡ一明显高于地面对照及用药组，这表明，在高空缺氧条件下，对照组脑组织过氧化反应增强，高于用药组：脑组织ＭＤＡ含量与锌含量成反比。     

脑卒中患者血清中8种必需微量元素水平的研究

１１０例脑卒中患者血清中铁，锌，铜，锰，硒，铬，钴，镍的含量水平与对照组比较，结果显示：１．血清的，铜和铬的含量升高，锌，钴和镍的含量降低，两者之间的差异均有高度显著性，Ｐ〈０．０１；２．血清锰和硒的含量与对照组差异无显著性，Ｐ〉０．０５；３．在临床上述元素含量变化可用于脑座中的辅助诊断和治疗。     

扬子地块北缘贵池地层区沉积地层的稀土元素组成及其地质意义

对扬子地块北缘贵池地层区从震旦系到三叠系沉积地层各种岩石的稀土元素组成研究表明，全剖面稀土平均含量低于沉积岩的平均含量，但与地台区十分接近。按岩类平均，页岩稀土含量最高，砂岩及粉砂岩闪之，灰岩最低。不同时代地层稀土含量受岩性控制，以碳酸盐为主的奥陶系，三叠系地层和稀土含量最低，以陆源碎屑岩为主的志留系，泥盆系地层最高。     

高血压患者血清中铁锌铜锰硒铬含量的研究

１６５例高血压患者血清中铁，锌，铜，锰，硒，铬的含量与对照组比较，结果显示：１．微量元素铁，锌含量明显升高，而血清铜，铬含量明显降低，其差异均有高度显著性，Ｐ〈０．０１；血清锰和硒的含量，两者差异无显著性，Ｐ〉０．０１．２．上述元素含量的特点可用高血压病的早期预报和治疗。     

青海湖区沙柳河谷典型植物重金属含量特征

对青海湖地区沙柳河下游地区14种典型植物，采用AAS进行了As、Sb、Pb、Cd、Ni、Co、Cr、Se等8种重金属元素含量的分析。结果表明，元素Cr的平均含量最高，但含量范围变化不大，而Co和As的含量在不同植物中含量相差很大。     

二氧化碳和丙烯直接合成甲基丙烯酸的NiPMo/TiO2催化剂的研究

用溶胶-凝胶法以磷钼酸(MPA)的镍盐溶液水解钛酸四丁酯制备了NiPMo/TiO2催化剂.使用ICP、 XRD、 TG-DTA、 IR、 TPD-MS和微反应技术研究了催化剂的化学组成、热稳定性、化学吸附性质和催化反应性能.杂多钼酸盐与TiO2通过O2-在TiO2表面发生了键合.在623 K下,杂多阴离子仍保持原有的Keggin结构.CO2在Lewis酸位Ni(Ⅱ)和Lewis碱位Ni-O-Mo的桥氧协同作用下生成CO2卧式吸附态Ni(Ⅱ)←O-(CO)←(O--Ni).丙烯有多种吸附态在催化剂上吸附.在563 K、 1 MPa和空速1500 h-1的反应条件下,丙烯的摩尔转化率为3.2%,产物MAA选择性为95%.     

Toward new camptothecins. Part 6: Synthesis of crucial ketones and their use in Friedländer reaction

In the context of the preparation of camptothecin and luotonin A analogs, the synthesis of some key keto-precursors and their use in Friedländer condensation are described. This paper also focuses on the stability of these keto intermediates and emphasizes the major differences between indolizinones and pyrroloquinazolinones series. Noteworthy is also the report of some original structures isolated as by-products of some experiments.     

CoFe2O4自形成磁性液体场致结构化对磁化的影响

The Langevin paramagnetic theory can’t describe the relation between magnetization of ferrofluids and applied magnetic field. The structuralization of ferrofluids, which is considered the main influence factor of the magnetization, is regarded. The part of magnetization works is deposited when the structure is forming. This action influences the magnetization of ferrofluids directly or indirectly. On the base of the “compressing” model, the Langevin function that usually describes the magnetization of ferrofluid is modified, and a well-fitted curve is obtained. An equation of the relation between the equivalent volume fraction after being “compressed” and the intensity of magnetic field is discovered, which approximately describes the process of magnetization. The relation between the approximate initial susceptibility and the volume fraction can be obtained from modified formula.     

Highly regioselective Buchwald–Hartwig amination at C-2 of 2,4-dichloropyridine enabling a novel approach to 2,4-bisanilinopyridine (BAPyd) libraries

The highly regioselective Buchwald–Hartwig amination at C-2 of the cheap and readily accessible reagent, 2,4-dichloropyridine with a range of anilines and heterocyclic amines is described. This new methodology is robust and provides a facile access to 4-chloro-N-phenylpyridin-2-amines on 0.25 mol scale. These intermediates undergo a further Buchwald–Hartwig amination at higher temperature to enable rapid exploration of the chemical space at C-4 and to provide a library of 2,4-bisaminopyridines.     

KMnO4-mediated oxidative CN bond cleavage of tertiary amines: Synthesis of amides and sulfonamides

KMnO₄-mediated oxidative CN bond cleavage of tertiary amines producing secondary amine was introduced, which was trapped by electrophiles (acyl chloride and sulfonyl chloride) to form amides and sulfonamides. The reaction could take place at mild condition, tolerating a wide range of function groups and affording products in moderate to excellent yields.     

Chemistry of heterocyclic compounds at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, over 50 years (Review)

The review contains a concise historical account and information on the most significant researches undertaken by the staff at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences on the Chemistry of Heterocyclic Compounds. Dedicated to Academician of the Russian Academy of Sciences B. A. Trofimov on his 70th jubilee. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1443–1502, October, 2008.     

Sulfur-directed metal-free and regiospecific methyl C(sp3)–H imidation of thioanisoles

Regiospecific and direct imidation of the methyl C(sp³)–H bond of thioanisoles is realized under mild and metal-free conditions with N-fluorobis(benzenesulfonyl)imide as an oxidant and nitrogen source. Proposed mechanism suggests that thionium ion intermediates and a Pummerer-type reaction are involved. The imidation has advantages such as high step-economy, excellent functionality tolerance, and regiospecificity, giving structurally diverse imidation products.     

Selective syntheses of 2H-1,3-oxazines and 1H-pyrrol-3(2H)-ones via temperature-dependent Rh(II)-carbenoid-mediated 2H-azirine-ring expansion

The Rh(II)-catalyzed reaction of 2-carbonyl-substituted 2H-azirines with ethyl 2-cyano-2-diazoacetate or 2-diazo-3,3,3-trifluoropropionate provides an easy access to 2H-1,3-oxazines and 1H-pyrrol-3(2H)-ones. These compounds can be selectively prepared from the same starting material using temperature as the only varied parameter. The 2-azabuta-1,3-diene intermediate, a common precursor for both heterocyclic products, isomerizes into 2H-1,3-oxazine under kinetic control, while 1H-pyrrol-3(2H)-one is the sole product of the reaction at elevated temperatures. According to DFT-calculations a one-atom oxazine ring contraction involving ring-opening to a 2-azabuta-1,3-diene intermediate, followed by a 1,5- and 1,2-prototropic shift leads to the consecutive formation of imidoylketene and azomethine ylide, which then further undergo cyclization to the pyrrole derivative.     

Synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives

Different approaches for the synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives from simple amino acids have been investigated. A library of 33 precursors for the preparation of N-hydroxy pyrazinones was obtained in moderate to good yields.