Introduction: Lily (Lilium spp.) is a genus of herbaceous flowering plants, which consisted of ma... more Introduction: Lily (Lilium spp.) is a genus of herbaceous flowering plants, which consisted of many beautiful ornamental species with large prominent flowers. Most species are native to the Northern hemisphere temperate, though their range extends into the Northern subtropics. Some specific hybrids of Lilium spp. have been developed as cut flower in controlled conditions and in some cases can be grown as pot plant. Propagation rate of lily in natural clonal propagation methods is very low and one year produces of 1-2 bulblets per bulb scale. There is also possibility of disease transmission; so that, tissue culture techniques has provided an efficient method for its micropropagation. Materials and Methods: In this study, two separate experiments under In vitro conditions the bulblet regeneration from thin cell layer (TCL) explants of Lilium spp. was investigated. In the first experiment, after two months the effect of TCL explants with 1, 3 and 5 mm thickness on MS medium containing...
Mineral Deposit Research: Meeting the Global Challenge, 2005
The Javan Sheikh area is located north of Ahar city in northwest Iran (Fig. 1). The Ahar district... more The Javan Sheikh area is located north of Ahar city in northwest Iran (Fig. 1). The Ahar district is well known in Iran for its ancient and modern copper and base metals mining. Within this district are the giant Sungun porphyry copper and the Mazraeh skarn copper deposits. This district lies within the Alborz-Azarbaijan zone of the Alpine-Himalayan orogen. The Javan Sheikh area is one part of the Ahar mineralized area within the copper belt of Iran and forms part of this global orogen. The geology of Javan Sheikh area is relatively poorly understood. Until recently the area was not explored in detail. Few geological studies have been carried out in this area due to a lack of regional geochemical exploration. No systematic petrological and geochemical investigations were performed during the previous regional exploration. Open image in new window Figure 1 Location of Javan Sheikh area in nothwest Iran of regional geochemical exploration. No systematic petrological and geochemical investigations were performed during the previous regional exploration.
2009 International Conference on Digital Image Processing, 2009
In this paper an efficient method for separation of astrophysical radiations is proposed, which i... more In this paper an efficient method for separation of astrophysical radiations is proposed, which is based on independent component analysis (ICA). Each of the astrophysical radiation sources conveys useful information; however usually their mixtures are available. So separating these radiations from their mixtures is a necessity. As will be discussed, in this field the necessary assumptions of ICA are satisfied
Motion compensation using deformable triangle patches has been successfully used for low bit rate... more Motion compensation using deformable triangle patches has been successfully used for low bit rate coding of videophone sequences. They were also shown to be particularly efficient for interframe coding of MRI sequences, for which the difference between image slices can be well modeled by locally affine deformations. Regular triangular meshes were used in previous works. In this paper, we present a quadtree decomposition algorithm to generate a triangle mesh for which smaller triangles are used in image areas where the motion or deformation is more complex. Grid points are recursively added to areas where the reduction in prediction error is more significant. Results show that using variable size triangular patches increases the PSNR of the motion-compensated image while reducing the number of grid points when compared to a regular triangular mesh.
2019 27th Iranian Conference on Electrical Engineering (ICEE)
Air pollution is one of the world's most substantial environmental health risks, and efforts ... more Air pollution is one of the world's most substantial environmental health risks, and efforts are being made to reduce its adverse impacts on human health. The prime step in preventing the threats posed by air pollution is devising tools for reporting the air quality to the public by which they are able to make proper decisions to reduce the exposure to the pollution. In this paper, we present an image-processing-based method for classification of the air quality level (AQL) by leveraging on image analytics and computer vision techniques. By analyzing an image taken of the sky and extracting useful features from it, the proposed method can accurately classify the AQL and is suitable to be embedded into portable devices such as smartphones to inform the users of the air pollution exposure status. A dataset of 3422 images, called ImSkySet, was built and used to extract features for training the classifier. We have thoroughly evaluated the performance of the system and reported the experimental results which show an average accuracy of approximately 82.02%. Our results provide a promising case for the benefits of utilizing image processing approaches to monitor the air quality for the purpose of raising public awareness.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
In this paper, we introduce a new iterative scheme by the generalized viscosity approximation met... more In this paper, we introduce a new iterative scheme by the generalized viscosity approximation method for finding a common element of the set of solutions of an equilibrium problem and the set of common fixed points of infinitely many nonexpansive mappings in a Hilbert space. Then, we prove a strong convergence theorem which improves and extends some recent results. 2010 Mathematics Subject Classification: 47H10; 47J25; 47H09; 65J15.
In recent years, cell-based immunotherapies have demonstrated promising results in the treatment ... more In recent years, cell-based immunotherapies have demonstrated promising results in the treatment of cancer. Chimeric antigen receptors (CARs) arm effector cells with a weapon for targeting tumor antigens, licensing engineered cells to recognize and kill cancer cells. The quality of the CAR-antigen interaction strongly depends on the selected tumor antigen and its expression density on cancer cells. CD19 CAR-engineered T cells approved by the Food and Drug Administration have been most frequently applied in the treatment of hematological malignancies. Clinical challenges in their application primarily include cytokine release syndrome, neurological symptoms, severe inflammatory responses, and/or other off-target effects most likely mediated by cytotoxic T cells. As a consequence, there remains a significant medical need for more potent technology platforms leveraging cell-based approaches with enhanced safety profiles. A promising population that has been advanced is the natural kill...
Introduction: Lily (Lilium spp.) is a genus of herbaceous flowering plants, which consisted of ma... more Introduction: Lily (Lilium spp.) is a genus of herbaceous flowering plants, which consisted of many beautiful ornamental species with large prominent flowers. Most species are native to the Northern hemisphere temperate, though their range extends into the Northern subtropics. Some specific hybrids of Lilium spp. have been developed as cut flower in controlled conditions and in some cases can be grown as pot plant. Propagation rate of lily in natural clonal propagation methods is very low and one year produces of 1-2 bulblets per bulb scale. There is also possibility of disease transmission; so that, tissue culture techniques has provided an efficient method for its micropropagation. Materials and Methods: In this study, two separate experiments under In vitro conditions the bulblet regeneration from thin cell layer (TCL) explants of Lilium spp. was investigated. In the first experiment, after two months the effect of TCL explants with 1, 3 and 5 mm thickness on MS medium containing...
Mineral Deposit Research: Meeting the Global Challenge, 2005
The Javan Sheikh area is located north of Ahar city in northwest Iran (Fig. 1). The Ahar district... more The Javan Sheikh area is located north of Ahar city in northwest Iran (Fig. 1). The Ahar district is well known in Iran for its ancient and modern copper and base metals mining. Within this district are the giant Sungun porphyry copper and the Mazraeh skarn copper deposits. This district lies within the Alborz-Azarbaijan zone of the Alpine-Himalayan orogen. The Javan Sheikh area is one part of the Ahar mineralized area within the copper belt of Iran and forms part of this global orogen. The geology of Javan Sheikh area is relatively poorly understood. Until recently the area was not explored in detail. Few geological studies have been carried out in this area due to a lack of regional geochemical exploration. No systematic petrological and geochemical investigations were performed during the previous regional exploration. Open image in new window Figure 1 Location of Javan Sheikh area in nothwest Iran of regional geochemical exploration. No systematic petrological and geochemical investigations were performed during the previous regional exploration.
2009 International Conference on Digital Image Processing, 2009
In this paper an efficient method for separation of astrophysical radiations is proposed, which i... more In this paper an efficient method for separation of astrophysical radiations is proposed, which is based on independent component analysis (ICA). Each of the astrophysical radiation sources conveys useful information; however usually their mixtures are available. So separating these radiations from their mixtures is a necessity. As will be discussed, in this field the necessary assumptions of ICA are satisfied
Motion compensation using deformable triangle patches has been successfully used for low bit rate... more Motion compensation using deformable triangle patches has been successfully used for low bit rate coding of videophone sequences. They were also shown to be particularly efficient for interframe coding of MRI sequences, for which the difference between image slices can be well modeled by locally affine deformations. Regular triangular meshes were used in previous works. In this paper, we present a quadtree decomposition algorithm to generate a triangle mesh for which smaller triangles are used in image areas where the motion or deformation is more complex. Grid points are recursively added to areas where the reduction in prediction error is more significant. Results show that using variable size triangular patches increases the PSNR of the motion-compensated image while reducing the number of grid points when compared to a regular triangular mesh.
2019 27th Iranian Conference on Electrical Engineering (ICEE)
Air pollution is one of the world's most substantial environmental health risks, and efforts ... more Air pollution is one of the world's most substantial environmental health risks, and efforts are being made to reduce its adverse impacts on human health. The prime step in preventing the threats posed by air pollution is devising tools for reporting the air quality to the public by which they are able to make proper decisions to reduce the exposure to the pollution. In this paper, we present an image-processing-based method for classification of the air quality level (AQL) by leveraging on image analytics and computer vision techniques. By analyzing an image taken of the sky and extracting useful features from it, the proposed method can accurately classify the AQL and is suitable to be embedded into portable devices such as smartphones to inform the users of the air pollution exposure status. A dataset of 3422 images, called ImSkySet, was built and used to extract features for training the classifier. We have thoroughly evaluated the performance of the system and reported the experimental results which show an average accuracy of approximately 82.02%. Our results provide a promising case for the benefits of utilizing image processing approaches to monitor the air quality for the purpose of raising public awareness.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
In this paper, we introduce a new iterative scheme by the generalized viscosity approximation met... more In this paper, we introduce a new iterative scheme by the generalized viscosity approximation method for finding a common element of the set of solutions of an equilibrium problem and the set of common fixed points of infinitely many nonexpansive mappings in a Hilbert space. Then, we prove a strong convergence theorem which improves and extends some recent results. 2010 Mathematics Subject Classification: 47H10; 47J25; 47H09; 65J15.
In recent years, cell-based immunotherapies have demonstrated promising results in the treatment ... more In recent years, cell-based immunotherapies have demonstrated promising results in the treatment of cancer. Chimeric antigen receptors (CARs) arm effector cells with a weapon for targeting tumor antigens, licensing engineered cells to recognize and kill cancer cells. The quality of the CAR-antigen interaction strongly depends on the selected tumor antigen and its expression density on cancer cells. CD19 CAR-engineered T cells approved by the Food and Drug Administration have been most frequently applied in the treatment of hematological malignancies. Clinical challenges in their application primarily include cytokine release syndrome, neurological symptoms, severe inflammatory responses, and/or other off-target effects most likely mediated by cytotoxic T cells. As a consequence, there remains a significant medical need for more potent technology platforms leveraging cell-based approaches with enhanced safety profiles. A promising population that has been advanced is the natural kill...
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