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Abstract  

A new complex, diaquadi(1,2,4-triazol-5-one)zinc(II) ion nitrate formulated as {[Zn(TO)2(H2O)2](NO3)2}n (1) (1,2,4-triazole-5-one, abbreviated as: TO) was synthesized and characterized by elemental analysis, X-ray single crystal diffraction, infrared spectrum (IR), differential scanning calorimetry (DSC), thermogravimetric analysis and differential thermogravimetric analysis (TG-DTG). The X-ray structure analysis reveals that the complex is orthorhombic with space group Pbca and unit-cell parameters a=6.9504(2) �; b=10.6473(3) �; c=17.8555(5) �. Based on the result of thermal analysis, the thermal decomposition process of the compound was derived. From measurement of the enthalpy of solution in water in 298.15 K, the standard molar enthalpy of solution of lignand TO and the complex were determined as 15.43�0.18 and 52.64�0.42 kJ mol−1, respectively. In addition, the standard molar enthalpy of formation of TO(aq) was calculated as −126.97�0.72 kJ mol−1.

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Summary

The widespread use of the pharmaceutical metformin for diabetes therapy has led to finding its way into many surface waters up to the μg L−1 range and subsequently into different water treatment processes. In this study, metformin was treated with hypochlorite on the laboratory scale, and the resulting transformation products were investigated with the umu assay in a microtiter plate, where a genotoxic effect was detected. For the characterization of this genotoxic effect, the sample was separated using high-performance thin-layer chromatography (HPTLC), and 29 zones over the whole retardation area were extracted from the HPTLC plate with the thin-layer chromatography-mass spectrometry (TLC-MS) Interface. Then, the umu assay was performed again with each extracted zone, such that the genotoxic effect in the sample could be assigned to a certain zone. By the measurement of this effective zone with high-performance liquid chromatography with high-resolution mass spectrometry and by performing a non-target screening, the effective substance could be identified as a cyclic dehydro-1,2,4-triazole derivate with an intense yellow color. This substance formerly was found by Armbruster et al. (Water Research, 2015), which is a major transformation product of chlorine-treated metformin.

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Abstract  

The new polycyclic nitramine 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (HNIW) has been focused as a considerable amount of research recently on investigating its polymorphs, relative stability, and respective reaction chemistry. It is known as CL-20 popularly, CL-20 is a very high-energy and relatively high oxygen balance value crystalline compound whose method of synthesis and detailed performance data are still classified. 5-oxo-3-nitro-1,2,4-triazole (NTO, or nitrotriazolone) was an insensitive molecule comparison general explosives, and the NTO based polymer bonded explosives (PBX) was a low vulnerability explosive. Both energetic materials are all very important high explosives, which is used in a variety of military formulations widely owing to the properties of high energy and desensitization of PBX, many researchers have demonstrated the usefulness of above two energetic materials in explosive component. In this work, the thermal decomposition characteristics of explosives CL-20 and NTO were studied using thermal analytical techniques (TG, DSC), then the compatibility of above two explosives with silicone rubber, and the decomposition kinetic parameters such as activation energies of decomposition, the frequency factor of the decompose reaction are also evaluated by non-isothermal DSC techniques.

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Petróczi I. M. — Ács P.-né — Kovács Zsuzsanna (1996): Triazole fungicides and the quality of wheat. Agrofórum, 7/6: 14–15. Kovács Z. Triazole fungicides and the quality of wheat

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99 Ruske, R.E., Gooding, M.J., Jones, S.A. 2003. The effects of adding picoxystrobin, azoxystrobin and nitrogen to a triazole programme on disease control, flag leaf senescence, yield and

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Magyar Sebészet
Authors: László Agócs, Bernadett Lévay, Ákos Kocsis, Györgyi Szabó, Eldin Mohamed Gamal, Lívia Rojkó, József Sándor, and György Wéber

PD Rogers JD Cleary SW Chapman 2003 Voriconazole: A new triazole antifungal agent

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Marchington, A. F. (1984): The design of triazole fungicides. In: Magee, P. S., Kohn, G. K. and Menn, J. J. (eds): Pesticide Synthesis Through Rational Approaches. ACS Symp. Ser. 225), American Chemical Society, Washington, pp. 173

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Ruske, R. E., Gooding, M. J., Jones, S. A. (2003): The effects of adding picoxystrobin, azoxystrobin and nitrogen to a triazole programme on disease control, flag leaf senescence, yield and grain quality of winter wheat. Crop Prot. , 22 , 975

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380 386 Kumar, N., Anubhuti Bora, J. I., Amb, M. K.: Chronic toxicity of the triazole fungicide tebuconazole on a heterocystous, nitrogen-fixing rice paddy field cyanobacterium

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