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61.
Javad Safaei-Ghomi Tayebeh Ahmadi Hossein Batooli 《Chemistry of Natural Compounds》2010,46(5):816-818
62.
Amir Reza Jalilian Mahdokht Jouiaei Alireza Doroudi Javad Garousi Sedigheh Moradkhani 《Journal of Radioanalytical and Nuclear Chemistry》2010,285(3):555-561
In this work, recently prepared 67Ga-labeled glucagon (67Ga-DTPA-GCG) for imaging studies (radiochemical purity >94%; HPLC, S.A. 296–370 GBq/mM) was used in biological studies. The wild-type rat biodistribution results, 2 h post injection, demonstrated high tissue:muscle ratios for target tissues (liver, kidney, heart, spleen, fat intestine stomach and pancreas), 234, 18.45, 7.12, 1.75, 128.7, 4.9, 6.3 and 1.11, respectively. The tracer binding capacity using freshly prepared rat brain homogenate demonstrated significant specific binding of the tracer to neuronal GCG receptors (67Ga-DTPA-GCG/67Ga:3 and 67Ga-DTPA-GCG/67GaDTPA:2.2 at 90 min). SPECT images also demonstrated target specific binding of the tracer at 4 h. The data suggests the tracer is accumulated in GCGR rich tissues 2–4 h post injection, suggesting potentials of the tracer for future imaging studies in glocagonoma models. 相似文献
63.
A. A. Karimi Zarchi N. Mokhtari M. Arfan T. Rehman M. Ali M. Amini R. Faridi Majidi A. R. Shahverdi 《Applied Physics A: Materials Science & Processing》2011,103(2):349-353
In this study a sunlight-induced method for rapid synthesis of silver nanoparticles using an ethanol extract of Andrachnea chordifolia is described. The silver nitrate solutions (1 mM) containing the ethanol extract of Andrachnea chordifolia were irradiated by both sunlight radiation and by sunlight radiation passed through different colored filters (red, yellow
or green). The smallest size of silver nanoparticles was obtained when a silver ion solution was irradiated for 5 minutes
by direct sunlight radiation. Further examination of the shape and size and of the surface chemistry of these biogenic silver
nanoparticles, which were prepared under sunlight radiation, was carried out using transmission electron microscopy and infrared
spectroscopy, respectively. Transmission electron microscopy images show spherical particles with an average size of 3.4 nm.
Hydroxyl residues were also detected on the surface of these biogenic silver nanoparticles fabricated using plant extract
of Andrachnea chordifolia under sunlight radiation. Our study on the reduction of silver ions by this plant extract in darkness shows that the synthesis
process can take place under dark conditions at much longer incubations (48 hours). Larger silver polydispersed nanoparticles
ranging in size from 3 to 30 nm were obtained when the silver ions were treated with the ethanol extract of Andrachnea chordifolia under dark conditions for 48 hours. 相似文献
64.
Javad Sharifi 《Physics letters. A》2011,375(3):522-528
The quantum trajectory renders the optimal estimation of quantum state. It is a classical Itô stochastic differential equation. The Lyapunov global stabilization problem is solved for squeezed noise quantum trajectory. Lyapunov control stabilizes the quantum system toward one eigenstate. A two-level bistable quantum system is simulated as an example. 相似文献
65.
Robabeh Baharfar Mohammad Javad Taghizadeh Majid Ahmadian Seyed Meysam Baghbanian 《中国化学快报》2010,21(2):175-178
<正>The addition of 2,4-dihydroxyaceto(and benzo)phenone to propiolic ester is catalyzed by triphenylphosphine or tert-butyl isocyanide to form O-vinyl aryl derivatives in fairly good yields. 相似文献
66.
M. G. Dekamin N. Yazdaninia J. Mokhtari M. R. Naimi-Jamal 《Journal of the Iranian Chemical Society》2011,8(2):537-544
Tetrabutylammonium phthalimide-N-oxyl (TBAPINO) was found to be an effective organocatalyst for rapid, simple and chemoselective protection of the hydroxyl group of alcohols and phenols using hexamethyldisilazane (HMDS) under mild conditions. The low catalyst loading, high to quantitative yields and simple removal of the catalyst from the reaction mixture illustrate the other attractive features of this protocol. 相似文献
67.
Using Auslander’s G-dimension, we assign a numerical invariant to any group Γ. It provides a refinement of the cohomological dimension and fits well into the well-known hierarchy of dimensions assigned already to Γ. We study this dimension and show its power in reflecting the properties of the underlying group. We also discuss its connections to relative and Tate cohomology of groups. 相似文献
68.
Azadi Mahboobeh Olya Mohammad Javad Vahedi Samaneh Sangani Neda Fazeli 《Russian Journal of Applied Chemistry》2017,90(7):1181-1187
Russian Journal of Applied Chemistry - Titanium dioxide (TiO2) is widely used in the paint industry as a white pigment. To reduce the high cost of TiO2, mineral fillers such as different calcites... 相似文献
69.
Mehdi Kalhor Akbar Mobinikhaledi Javad Jamshidi 《Research on Chemical Intermediates》2013,39(7):3127-3133
A simple and practical procedure for synthesis of 2-arylbenzimidazoles by a one-pot condensation of o-phenylenediamine with aromatic aldehydes in the presence of a catalytic amount of M(NO3)2·6H2O (M = Mn, Fe, Co, Ni, Cu) in ethanol at room temperature is described. Major advantages of this practical procedure are use of a readily available catalyst, high yields, short reaction times, and simplicity of the reaction and workup. 相似文献
70.
This paper presents an alternative semi-blind watermarking algorithm in gray scale images. The new watermarking system changes
the coefficients of discrete cosine transform in homogeneous manner. This algorithm is based on the modification of the base
using the concept of the norm or the distance. Experimental results introduced at the end of this paper, demonstrates the
robustness of the proposed strategy against different attacks. 相似文献