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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Caspian Journal of Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: GIAO,HF,AM1,and 29Si Chemical shift
- چکیده:
- چکیده انگلیسی: Nowadays NMR spectroscopy becomes a powerful tool in chemistry because of the NMR chemical shifts. Hartree–Fock theory and the Gauge-including atomic orbital (GIAO) methods are used in the calculation of 29Si NMR chemical shifts of various silicate species in the silicate solution as initial components for zeolite synthesis both in gas and solution phase. Calculations have been performed at geometries optimized at the AM1 semi-empirical method. The GIAO-HF calculations were carried out with using different basis sets: 3-21G, 6-31G, 6-311G, 6-31G (d,p), 6-311G (d,p), 6-311G (2d,p) and 6-31G (2d,p). To demonstrate the quality of the calculations the calculated chemical shifts, δ, were compared with the corresponding experimental values for the compounds in study. The results, especially with 6-311G (2d, p) are in agreement with experimental values. Also the calculated chemical shifts on gas phase have more agreement than solution phase.
- انتشار مقاله: 21-05-1390
- نویسندگان: Seyed Naser Azizi,Salma Ehsani Tilami,Fatematozzahra Mosavi
- مشاهده
- جایگاه : پژوهشی
- مجله: Advanced Herbal Medicine
- نوع مقاله: Journal Article
- کلمات کلیدی: Liver,Kombucha,UDPGT,Mice,Iran nonpharmacologic nursing care
- چکیده:
- چکیده انگلیسی: Background and aims: Kombucha is an ancient food and healing source with Asian origin. Kombucha consists of a wide range of acids, including vitamin C, organic materials, enzymes, and B-group vitamins, which has provided it with immense value. This study was aimed to investigate the effects of Kombucha tea consumption on hepatic UDPGT enzyme in mice. Methods: In this experimental study, 21 small male albino mice and CD-1 genus were used. Albino mice species were purchased from serum Institute in Karaj Hisarak. Mice with a weight between 18 to 25 g were selected. Animals were kept in triplex group in polycarbonate cages. Animal rooms were equipped with air-conditioner. Ambient temperature was retained at about 22°C, and humidity 50%. A light cycle was set at 12 hours brightness and 12 hours darkness. The intensive diet was used that produced by animal Pars feeds for mice feeding. Finally, UDPGA enzyme was measured. Results: Consumption of kombucha tea for seven days of experiment caused a significant increase in enzyme activity in mice liver UDPGT compared to the negative control group, from the first day until the seventh day of experiment. Conclusion: Kombucha tea induced the UDPGT enzyme; thus, it accelerated the detoxification of the body and should be cautioned about simultaneous administration of this beverage with some drugs (such as steroids, acetaminophen, cardio– vascular medicine, etc.) that they metabolize through conjugation. Medical community in this case must be justified and their opinion must be considered when people are using this tea. Finally, kombucha tea consumption did not increase the liver weight. So, UDPGT induction was not the reason of liver weight increase.
- انتشار مقاله: 01-12-1393
- نویسندگان: Mohsen Asadbeygi,Masoud Yarahmadi,Ahmad Adineh,Mahmoud Bahmani,Fariborz Kayhanfar,Mohammad Hassan Pipelzadeh,Ahmad Ebrahimi,Zahra Mosavi
- مشاهده