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Commercially available 2 nitro 4 methoxyaniline was used as starting material and converted via reduction with zinc dust and cyclization with potassium ethyl xanthate into the title compound,suggesting that this procedure is suitable for industrial production.

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In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

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The results obtained are as follows:(1) intrarenal artery injection of capsaicin (20, 40, and 60 nmol/kg) increased the renal afferent nerve activity in a dose-dependent manner with unchanged arterial pressure;(2) pretreatment with ruthenium red (40 mmol/kg), a capsaicin receptor antagonist, completely abolished the effect of capsaicin; and (3) pretreatment with a nitric oxide synthase inhibitor L-NAME ( N6-nitro-L-arginine methylester, 0.1 mmol/kg), significantly enhanced the ARNA response to capsaicin.

結(jié)果表明：(1)腎動脈內(nèi)注射辣椒素20一本大道香蕉欧美精品69、40和60nmol/kg可呈劑量依賴性地興奮腎傳入纖維的活動，而動脈血壓不變欧美人与动牲性行为视频；(2)靜脈內(nèi)預(yù)先應(yīng)用辣椒素受體阻斷劑釕紅(40 mmok/kg)精品日韩大片观看视频在线观看，可完全阻斷辣椒素對腎傳入纖維的興奮作用。(3)靜脈內(nèi)預(yù)先注射一氧化氮合酶抑制劑L-NAME(0.1 mmok/kg)国产一级作爱A片免费视频，能延長并增強腎傳入神經(jīng)對辣椒素的反應(yīng)久久人人摸人人搞。

The results obtained are as follows:(1) injection of 50, 100, and 200 nmol/kg adenosine into the renal artery increased the renal afferent nerve activity in a dose-dependent manner with unchanged arterial pressure;(2) pretreatment with 8-cyclopenthl -1,3-dipropylxanthine (DPCPX, 160 nmol/kg), an adenosine A1 receptor antagonist, partly abolished the effect of adenosine; and (3) pretreatment with a nitric oxide synthase inhibitor N w-nitro- L -arginine methylester (L -NAME, 0.1 mmol/kg) significantly enhanced the ARNA response to adenosine.

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The results obtained are as follows:(1) injection of 50, 100, and 200 nmol/kg adenosine into the renal artery increased the renal afferent nerve activity in a dose-dependent manner with unchanged arterial pressure;(2)pretreatment with 8-cyclopenthl-1,3-dipropylxanthine (DPCPX, 160 nmo//kg), an adenosine A1 receptor antagonist, partly abolished the effect of adenosine; and (3) pretreatment with a nitric oxide synthase inhibitor Nω-nitro-L-arginine methylester (L-NAME, 0.1 mmol/kg)significantly enhanced the ARNA response to adenosine.

結(jié)果表明：(1)腎動脈內(nèi)注射50，100和200nmol/kg腺苷可呈劑量依賴性地興奮腎神經(jīng)傳入纖維的活動毛片手机在线，而動脈血壓不變五月天无码视频。(2)腎動脈內(nèi)預(yù)先應(yīng)用選擇性腺苷A1受體阻斷劑DPCPX(160nmol/kg)，可部分阻斷腺苷對腎神經(jīng)傳入纖維的興奮作用最新免费a电影网站。(3)靜脈應(yīng)用一氧化氮合酶抑制劑L-NAME(0.1mmol/kg)預(yù)處理五级的在线观看黄色网站，延長并增強了腎神經(jīng)傳入纖維對腺苷的反應(yīng)。

This paper proposes a method for the determination of 4-hydroxy-3-nitro-benzenearsonic acid and arsanilic acid in the nitration reaction product of arsanilic acid by ion-pair chromatography.

本文提出一種用于測定對氨基苯胂酸硝化反應(yīng)產(chǎn)物中4-羥基-3-硝基苯胂酸及對氨基苯胂酸含量的離子對色譜法亚洲国产三级AV，選擇甲醇：水=25：75作為流動相黄页网址大全免费观看20在线，0。

Pneumoniae FH strain was cloned and the sequence was analysed by M13 DNA sequencing method. Comparing the PCR product sequcence with MP M-129 strain P1 gene, we found that there are 4 bases different. This may result from the different MP DNA templates. The maximum homology is 98.8%. The result confirmed the fidelity and specificity of the amplified target DNA segment by PCP, and suggested that two categories of MP P1 gene still exist a few differences even in the conservation region. The cloning MP DNA segment was labelled by random hexanucleotide priming, after hybridization, the probe detection was completed using an anti-digoxigenin antibody alkaline phosphatase conjugate, and the substrates 5-bromo-4-chloro-3-indolyl phosphate and nitro blue tetrazolium. This hybridization system is much superior to the radioactive probe hybridization, because it is safe, easy to handle and has no limitation of decay time. The time required for colormetic detection is also much less than the corresponding autoradiographic exposure time needed to achieve similar detection limits with 32P-labelled probes. The Dig-probes could be used repeatedly, and this made them not only much convenient to use, but also lower the cost, and worthwhile to be used popularly.

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The value of current density and the apparent active energy of electroreduction of substituted nitrobenzene depend on the electronic effect of substituted group and space resistance. o,m,p-chloronitrobenzene will be electroreduced to azoxy compounds by taking three electrons, o,m-nitrotoulene and o,m-nitrobenzoic acid will be reduced to phenol compounds by taking four electrons, and p-nitrotoulene will be reduced to the aniline by taking six electrons. According to these results, the electroreduction mechanism of the substituted aryl nitro-compounds was studied in detail.

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