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Dehghani, Hossein,Bakhshayesh, Sara,Shaterian, Maryam,Motamedi, Leila Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
Free base meso-tetraarylporphyrins ($H_2T(X)PP$) react with tellurium(IV) chloride ($TeCl_4$) in mild conditions for formation sandwich intermediate sitting-atop (i-SAT) complexes, [$TeCl_4(H_2T(X)PP)_2$]. $^1H$ NMR, $^{13}C$ NMR, UV-vis, FT-IR and elemental analysis were used for characterization of the products. In the proposed structure of the i-SAT complexes, four pyrroles of each porphyrin ring are tilted alternatively up and down and this appropriates suitable orientation of lone pairs of two pyrrolenine nitrogens for electron donation to a tellurium center. $^1H$ NMR and FT-IR results showed that in the produced complex, hydrogen atoms of porphyrin macrocycles remained on the pyrrole nitrogens.
Hossein Dehghani,Sara Bakhshayesh,Maryam Shaterian,Leila Motamedi 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
Free base meso-tetraarylporphyrins (H2T(X)PP) react with tellurium(IV) chloride (TeCl4) in mild conditions for formation sandwich intermediate sitting-atop (i-SAT) complexes, [TeCl4(H2T(X)PP)2]. 1H NMR, 13C NMR, UV-vis, FT-IR and elemental analysis were used for characterization of the products. In the proposed structure of the i-SAT complexes,four pyrroles of each porphyrin ring are tilted alternatively up and down and this appropriates suitable orientation of lone pairs of two pyrrolenine nitrogens for electron donation to a tellurium center. 1H NMR and FT-IR results showed that in the produced complex, hydrogen atoms of porphyrin macrocycles remained on the pyrrole nitrogens.
Mohammad Hadi Dehghani,Maryam Faraji,Amir Mohammadi,Hossein Kamani 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.2
Natural pumice (NP), FeCl3·6H2O modified pumice (FEMP) and hexadecyl trimethyl ammonium bromide (HDTM.Br) modified pumice (HMP) were used for fluoride adsorption. The effect of pH (3-11), initial concentration (2-15mg/L), and adsorbent dosage (0.2-0.8 g/L) on the defluoridation was optimized by using central composite design (CCD) in the response surface methodology (RSM). Results showed optimum condition in the pH=3, initial concentration=2mg/L, and adsorbent dosage=0.71, 0.75, 0.70 g/L with the maximum removal efficiency of 9.39, 76.45, and 95.09% for NP, FEMP, and HMP, respectively. The adsorption equilibrium and kinetic data was in good agreement with Freundlich and pseudo-second order reaction. Thermodynamic parameters indicated a non-spontaneous nature for NP and spontaneous nature for FEMP and HMP. Positive enthalpy illustrated the endothermic nature of the process. On the basis of results, modification of pumice led to an increase in the fluoride removal efficiency.
Mohammad Hadi Dehghani,Aliakbar Dehghan,Hossein Alidadi,Maryam Dolatabadi,Marjan Mehrabpour,Attilio Converti 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.6
The adsorption of methylene blue dye (MBD) from aqueous solutions was investigated using a new composite made up of shrimp waste chitosan and zeolite as adsorbent. Response surface methodology (RSM) was used to optimize the effects of process variables, such as contact time, pH, adsorbent dose and initial MBD concentration on dye removal. The results showed that optimum conditions for removal of MBD were adsorbent dose of 2.5 g/L and pH of 9.0, and initial MBD concentration of 43.75mg/L and contact time of 138.65 min. The initial concentration of dye had the greatest influence on MBD adsorption among other variables. The experimental data were well fitted by the pseudo-second order kinetic model, while the Freundlich isotherm model indicated a good ability for describing equilibrium data. According to this isotherm model, maximum adsorption capacity of the composite was 24.5mg/g. Desorption studies showed that the desorption process is favored at low pH under acidic conditions.
The influence of socioeconomic factors on deceased organ donation in Iran
Elahe Pourhosein,Farzaneh Bagherpour,Marzieh Latifi,Maryam Pourhosein,Gholamreza Pourmand,Farshad Namdari,Naghmeh Pourmand,Parisa Ghaffari,Sanaz Dehghani 대한이식학회 2022 Korean Journal of Transplantation Vol.36 No.1
Background: There is a large gap between the number of patients on organ waiting lists and the number of available organs for donation. This study investigated the socioeconomic factors in Iran that influenced decisions for organ donation among the families of brain-dead donors. Methods: This retrospective cross-sectional study was performed among the families of 333 organ donors in Iran. Two trained researchers interviewed family members about the donor’s age, sex, cause of brain death, education level, marital status, number of children, history of addiction, the financial status of the donor’s family, and reasons for which they considered refusing organ donation. Results: The mean age of the donors was 37.23±16.59 years. During 2017–2019, significant differences were found according to income (P<0.001), marital status (P<0.001), sex (P=0.04), and occupation (P=0.04). More than half of the organ donors were of low socioeconomic status, and nearly half were the sole income earners of large families. Trauma was the most common cause of death (44.6%). The most common reasons for which the families considered refusing organ donation were unfamiliarity with the concept of brain death, denial, and the expectation of a miracle. Conclusions: The donor’s socioeconomic status and availability of social services, such as insurance coverage, psychological services, and mourning therapy courses, play an important role in organ donation. Adequate support for the deceased’s family after organ donation is imperative.
Bracken-fern Extracts Induce Cell Cycle Arrest and Apoptosis in Certain Cancer Cell Lines
Roudsari, Motahhareh Tourchi,Bahrami, Ahmad Reza,Dehghani, Hesam,Iranshahi, Mehrdad,Matin, Maryam Moghadam,Mahmoudi, Mahmud Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.12
Bracken fern [Pteridium aquilinem (L.) kuhn (Dennstaedtiaceae)] is one of the most common species on the planet. It has been consumed by humans and animals for centuries. Use by some human groups is because they believe bracken fern is good for health as plant medicine. However, it is also one of the few known plants that can cause tumors in farm animals. Many interested groups have focused their attention on bracken fern because of these interesting features. In order to evaluate the biological effects of exposure to this plant in cellular level, human cancer cell lines were treated with the fern dichloromethane extracts and the genotoxic and cytotoxic effects were studied. Anti-proliferative/cytotoxic effects were evaluated by cell count, MTT assay and flow cytometry methods with three different cancer cell lines, TCC, NTERA2, and MCF-7, and two normal cells, HDF1 and HFF3. Pro-apoptotic effects of the extracts were determined by DAPI staining and comet assay, on TCC cancer cells compared to the normal control cell lines. Cellular morphology was examined by light microscopy. Our present study showed that the extract caused DNA damage and apoptosis at high concentrations ($200{\mu}g/mL$) and also it may induce cell cycle arrest (G2/M phase) at mild concentrations (50 and $30{\mu}g/mL$) depending on the cell type and tumor origin. These results indicate that bracken fern extract is a potent source of anticancer compounds that could be utilized pharmaceutically.
Esophageal, Gastric and Duodenal disorders : Migraine Headache And Peptic Ulcer Diseased In Children
( Mohammad Hadi Imanieh ),( Mahrnood Haghighat ),( Seved Mohsen Dehghani ),( Maziyar Irani ),( Maryam Yousefi ),( Davood Mehrabani ) 대한소화기학회 2007 SIDDS Vol.9 No.-
Background/Aims: Although correlation between migraine headache and GI symptoms were reported, they did not significantly support the correlation between migraine headache and mucosal inflammation or peptic ulcer diseases. This study aimed to find such a correlation. Methods: There were 70 patients (5-15 years old) who had endoscopic documented mucosal inflammation or peptic ulcer diseases. Frequency of migraine headache in this group and a group consisting of a sample of normal population (300) who had not any GI problem in the past year was determined by a questionnaire. Results: The mean age of patients was 10.34 years with male to female ratio of 4:3. Frequency of migraine headache, esophagitis, gastritis, gastric ulcer, duodenitis, and duodenal ulcer was 22.9%, 68.6%, 92.9%, 4.3%, 24.3% and 4.3%, respectively. Regarding frequency of migraine headache among the normal population which was 12.4%, the frequency of migraine headache among patients with mucosal inflammation and peptic ulcer diseases of the upper GI tract, which was 22.9% showed significant statistical correlation. A significant correlation was seen between migraine and esophagitis and also between migraine headache and gastritis. Conclusions: The presence of significant correlation between migraine headache and mucosal inflammation or peptic ulcer diseases of the upper GI tract supports some of precious studies suggested this correlation.