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Arash Ghorbani-Choghamarani,Maryam Hajjami,Mohammad Ali Zolfigol* 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.12
Sodium periodate (NaIO4) and potassium iodide (KI) in aqueous ammonia has been used for the one-pot synthesis of nitriles from the corresponding aldehydes and alcohols in moderate to good yield. This transformation, proceeds via an in situ oxidation- imination-aldimine oxidation sequence.
Microporous metal–organic frameworks: Synthesis and applications
Mahnaz Ahmadi,Maryam Ebrahimnia,Mohammad-Ali Shahbazi,Rüstem Keçili,Fatemeh Ghorbani-Bidkorbeh 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-
Metal-organic frameworks (MOFs) have emerged as porous hybrid materials composed of metal ions andorganic ligands. MOFs have attracted the attention of many researchers due to their promising characteristics,including high porosity, surface area, and drug loading capacity, tunable pore size and structure,good biodegradability and biocompatibility, and ease of functionalization. MOFs are categorized intothree groups based on their pore widths, including microporous, mesoporous, and macroporous MOFs. MOFs with micropores have shown special features. The internal pore widths of microporous MOFsare less than 2 nm, which leads to their high porosity and surface area. Microporous MOFs could be synthesizedthrough different strategies, including modulator-induced defect-formation, structure-directingagents, pillared-layer assembly, bridging helical chain secondary building units, coordination capabilitiesof P@O moieties in the structure of a ligand, and using octahedral cage-like building units. Because oftheir unique properties, microporous MOFs have shown great potential for many applications such asseparation, storage, catalysis, and sensing. A description of synthesis approaches and applications ofmicroporous MOFs in recent years is provided in this review.
Ganjali, Mohammad Reza,Ghorbani, Maryam,Daftari, Azadeh,Norouzi, Parviz,Pirelahi, Hooshang,Dargahani, Hossein Daryanavard Korean Chemical Society 2004 Bulletin of the Korean Chemical Society Vol.25 No.2
A highly selective membrane electrode based on1,3,5-triphenylpyrylium perchlorate (TPPP) is presented. The proposed electrode shows very good selectivity for sulfate ions over a wide variety of common inorganic and organic anions. The sensor displays a nice Nernstian slope of -29.7 mV per decade. The working concentration ranges of the electrode is 1.0{\times}10^{-1}-6.3{\times}10^{-6} $M with a detection limit of $4.0{\times}10^{-6}$ M (480 ng per mL). The response time of the sensor in whole concentration ranges is very short (< 6 s). The response of the sensor is independent on the pH range of 2.5-9.5. The best performance was obtained with a membrane composition of 32% PVC, 59% benzyl acetate, 5% TPPP and 4% hexadecyltrimethylammonium bromide. It was successfully used as an indicator electrode for titration of sulfate ions with barium ions. The electrode was also applied for determination of salbutamol sulfate and paramomycine sulfate.
Seyed Mohammad Reza Nejatollahi,Maryam Nazari,Keihan Mostafavi,Fariba Ghorbani 대한이식학회 2023 Korean Journal of Transplantation Vol.37 No.2
Background: Liver transplantation (LT) is widely recognized as a life-saving therapy for patients with end-stage liver disease. However, due to certain posttransplant complications, reoperations or endovascular interventions may be necessary to improve patient outcomes. This study was conducted to examine reasons for reoperation during the initial hospital stay following LT and to identify its predictive factors. Methods: We evaluated the incidence and etiology of reoperation in 133 patients who underwent LT from brain-dead donors over a 9-year period based on our experiences. Results: A total of 52 reoperations were performed for 29 patients, with 17 patients requiring one reoperation, seven requiring two, three requiring three, one requiring four, and one requiring eight. Four patients underwent liver retransplantation. The most common cause of reoperation was intra-abdominal bleeding. Hypofibrinogenemia was identified as the sole predisposing factor for bleeding. Frequencies of comorbidities such as diabetes mellitus and hypertension did not differ significantly between groups. Among patients who underwent reoperation due to bleeding, the mean plasma fibrinogen level was 180.33±68.21 mg/dL, while among reoperated patients without bleeding, it was 240.62±105.14 mg/dL (P=0.045; standard mean difference, 0.61; 95% confidence interval, 0.19–1.03). The initial hospital stay was significantly longer for the reoperated group (47.5±15.5 days) than for the non-reoperated group (22.5±5.5 days). Conclusions: Meticulous pretransplant assessment and postoperative care are essential for the early identification of predisposing factors and posttransplant complications. In order to enhance graft and patient outcomes, any complications should be addressed without hesitation, and appropriate intervention or surgery should not be delayed.
Zolfigol, Mohammad Ali,Hajjami, Maryam,Ghorbani-Choghamarani, Arash Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.12
Sodium periodate ($NaIO_4$) and potassium iodide (KI) in aqueous ammonia has been used for the one-pot synthesis of nitriles from the corresponding aldehydes and alcohols in moderate to good yield. This transformation, proceeds via an in situ oxidation- imination-aldimine oxidation sequence.
Hossein Hosseinzadeh,Mohammad Khoshdel,Maryam Ghorbani 사단법인약침학회 2011 Journal of Acupuncture & Meridian Studies Vol.4 No.4
Myrtus communis L. aerial parts have been used in traditional medicine for the treatment of inflammatory disease. In this study 350 mice were divided into three main groups:negative (saline), positive (morphine or diclofenac) controls, and test groups. The acute toxicity was assessed for 2 days. Antinociceptive activity was performed using hot plate and writhing tests. The anti-inflammatory effect was investigated using xylene-induced ear edema and a cotton pellet test. According to phytochemical screening, the extracts contained tannins, alkaloids, and flavonoids. The LD50 values of the aqueous and ethanolic extracts were 0.473 and 0.79 g/kg, respectively. In hot plate test, the aqueous and ethanolic extracts showed significant antinociceptive activity that was inhibited by naloxone. The extracts exhibited antinociceptive activity against acetic acideinduced writhing and also showed significant activity against acute inflammation which was dose dependent for aqueous extract. The ethanolic (0.05 g/kg) and aqueous extracts (0.005,0.015, and 0.03 g/kg) demonstrated anti-inflammatory effects against chronic inflammation. The aqueous and ethanolic extracts of the aerial parts of M communis L. showed antinociceptive effects and these may be mediated by opioid receptors.
La(III) Selective Membrane Sensor Based on a New N-N Schiff's Base
Ganjali, Mohammad Reza,Matloobi, Parisa,Ghorbani, Maryam,Norouzi, Parviz,Salavati-Niasari, Masoud Korean Chemical Society 2005 Bulletin of the Korean Chemical Society Vol.26 No.1
Bis(2-methylbenzaldehyde)butane-2,3-dihydrazone(TDSB) was used as new N-N Schiff's base which plays the role of an excellent ion carrier in the construction of a La(III) membrane sensor. The best performance was obtained with a membrane containing, 30% poly(vinyl chloride), 60% benzyl acetate, 6% TDSB and 4% sodium tetraphenyl borate. This sensor reveals a very good selectivity towards La(III) ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The proposed electrode exhibits a Nernstian behavior (with slope of 19.8 mV per decade) over a wide concentration range (1.0 ${\times}$ 10$^{-5}$-1.0 ${\times}$ 10$^{-1}$ M). The detection limit of the sensor is 7.0 ${\times}$ 10$^{-6}$ M. It has a very short response time, in the whole concentration range ($\sim$5 s), and can be used for at least twelve weeks in the pH range of 3.0-9.4. The proposed sensor was successfully applied as an indicator electrode for the potentiometric titration of a La(III) solution, with EDTA. It was also successfully applied in the determination of fluoride ions in three mouth wash preparations.
La(III) Selective Membrane Sensor Based on a New N-N Schiff's Base
Mohammad Reza Ganjali*,Parisa Matloobi,Maryam Ghorbani,Parviz Norouzi,Masoud Salavati-Niasari 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.1
Bis(2-methylbenzaldehyde)butane-2,3-dihydrazone(TDSB) was used as new N-N Schiff's base which plays the role of an excellent ion carrier in the construction of a La(III) membrane sensor. The best performance was obtained with a membrane containing, 30% poly(vinyl chloride), 60% benzyl acetate, 6% TDSB and 4% sodium tetraphenyl borate. This sensor reveals a very good selectivity towards La(III) ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The proposed electrode exhibits a Nernstian behavior (with slope of 19.8 mV per decade) over a wide concentration range (1.0 × 10−5-1.0 × 10−1 M). The detection limit of the sensor is 7.0 × 10−6 M. It has a very short response time, in the whole concentration range (~5 s), and can be used for at least twelve weeks in the pH range of 3.0-9.4. The proposed sensor was successfully applied as an indicator electrode for the potentiometric titration of a La(III) solution,with EDTA. It was also successfully applied in the determination of fluoride ions in three mouth wash preparations.