http://localhost:80/xmlui/handle/123456789/19291 2026-04-23T00:20:15Z 2026-04-23T00:20:15Z MOHAMMAD AFRASIABI ZEINAB REZAYATI ZAD SHOKAT KIANIPOUR ALI BABAEI ALI REZA TAHERI http://localhost:80/xmlui/handle/123456789/20041 2023-12-29T04:29:02Z 2013-08-08T00:00:00Z

Title: A Sensor for Determination of Tramadol in Pharmaceutical Preparations and Biological Fluids Based on Multi-Walled Carbon Nanotubes-Modified Glassy Carbon Electrode Authors: MOHAMMAD AFRASIABI; ZEINAB REZAYATI ZAD; SHOKAT KIANIPOUR; ALI BABAEI; ALI REZA TAHERI Abstract: A chemically modified electrode is constructed based on multi-walled carbon nanotube modified glassy carbon electrode (MWCNTs/GCE). It is demonstrated that this sensor could be used for determination of pharmaceutical important compound tramadol (TRA). The measurements were carried out using differential pulse voltammetry (DPV), cyclic voltammetry (CV) and chronoamperometry (CA) methods. DPV experiments of various concentration of TRA showed two linear dynamic ranges. The first linear dynamic range was from 4 μM to 35 μM, and the second linear dynamic range was between 60 μM to 550 μM. A detection limit of 0.38 µM (S/N = 3) was obtained. The analytical performance of this sensor has been evaluated for the detection of TRA in human serum, human urine and some pharmaceutical preparations with satisfactory results

2013-08-08T00:00:00Z JIAN ZHANG CHENGXIANG SHANG LONGFEI JIN http://localhost:80/xmlui/handle/123456789/19978 2023-11-30T03:48:48Z 2013-08-04T00:00:00Z

Title: Synthesis of Substituted 1, 4-dihydro-4-ferrocenylpyridines and 3-ferrocenyl-2-pyrazolines Catalyzed by Ionic Liquid [Bmim] OH Authors: JIAN ZHANG; CHENGXIANG SHANG; LONGFEI JIN Abstract: 5-aryl-3-ferrocenyl-1-phenyl-2-pyrazolines have been synthesized by the reaction of α, β-unsaturated ketones with phenylhydrazine in ionic liquid [Bmim]OH. While 4-ferrocenyl-1,4-dihydropyridine-2,6-dimethyl-3,5-dicarboxylic acid alkyl ester have been synthesized by the Hantzsch reaction in ionic liquid [Bmim]OH. Structures of all new compounds have been elucidated by microanalyses, 1H and 13C NMR spectroscopies.

2013-08-04T00:00:00Z ZHUONAN LI WENBI GUAN YONGQIANG MA HENG ZHAO ZHAOHAI QIN http://localhost:80/xmlui/handle/123456789/19972 2023-11-28T03:39:42Z 2013-08-10T00:00:00Z

Title: The Dissipation of Pyrimorph in Lake Water/Sediment Systems Authors: ZHUONAN LI; WENBI GUAN; YONGQIANG MA; HENG ZHAO; ZHAOHAI QIN Abstract: A study into the environmental behavior of pyrimorph in lake water/sediment systems has been carried out. The residue of pyrimorph in water and sediment for aerobic and anaerobic tests was determined, respectively. For aerobic test, the dissipation half-life of pyrimorph was 11.6 days in lake water of water/sediment system and 96.3 days in lake water of control treatment. For anaerobic test, the dissipation half-life of pyrimorph was 5.5 days in lake water of water/sediment system and 42.3 days in lake water of control treatment. Also, the pyrimorph concentration increased gradually in sediment of water-sediment system. The results showed that the dissipation of pyrimorph in water resulted mainly from sediment adsorption of pyrimorph and O2 inhibited the dissipation of pyrimorph. The degradation product of pyrimorph has been detected by HPLC-MS/MS. In the dissipation process, pyrimorph lost morpholine ring and formed an aldehyde compound.

2013-08-10T00:00:00Z WEI KE NA-BO SUN HONG-KE WU http://localhost:80/xmlui/handle/123456789/19971 2023-11-27T05:46:02Z 2013-08-09T00:00:00Z

Title: Microwave Assistant Synthesis, Crystal Structure and Biological Activity of A 1,2,4-Triazole Compound Authors: WEI KE; NA-BO SUN; HONG-KE WU Abstract: The title compound (C₁₇H₁₄F₂N₄SO) were synthesized and recrystallized from CH₃CN. The compound was characterized by ¹H-NMR, FTIR, MS, HRMS and X-ray diffraction. The compound crystallized in the Monoclinic space group C2/c with a = 27.532(6), b = 8.9596(18), c = 14.609(3) Å, α = 90, β = 112.59(3), γ =90°, V = 3327.1(12) Å3, Z = 8 and R = 0.0327 for 2596 observed reflections with I > 2σ(I). X-ray analysis reveals that not only intermolecular N–H•••N interactions, but also C-H•••π stacking interactions exist in the adjacent molecules. The biological activities results showed that it exhibited significant herbicidal activity towards Brassica napus.

2013-08-09T00:00:00Z