In this paper, a cost effective block truncation coding (CE-BTC) using low cost approach is presented for color image compression. To reduce the bit rate of the basic BTC, selected single bit-map is employed to represent the edge information of the coding block in the proposed CE-BTC. Moreover, a previous proposed algorithm, adaptive quantization coding (AQC), is used to compress the two repres...

Copper trimesate (Cu-BTC) MOF has been pointed out as a promising adsorbent for separating carbon dioxide from methane. However, MOF’s need to be shaped prior to their use in packed bed adsorbers in order to reduce pressure drop; on the other hand, the production of mechanically resistant shaped bodies reduces their adsorption performance. In this work, Cu-BTC tablets provided by BASF are evalu...

Betacellulin (BTC), a ligand of the epidermal growth factor receptor, has been shown to promote growth and differentiation of pancreatic β-cells and to improve glucose metabolism in experimental diabetic rodent models. Mesenchymal stem cells (MSCs) have been already proved to be multipotent. Recent work has attributed to rat and human MSCs the potential to differentiate into insulin-secreting c...

Activation of EGF receptors is closely involved in vascular proliferative diseases. The signaling mechanisms of EGF ligands, including betacellulin (BTC) and amphiregulin (AR), are poorly understood. We examined how BTC and AR induced DNA synthesis activity in primary cultures of human thoracic aortic smooth muscle cells (HTASMCs). BTC induced phosphorylation of all four EGF receptors present o...

Optical and radio afterglows arising from the shocks by relativistic conical ejecta running into pre-burst massive stellar winds are revisited. Under the homogeneous thin-shell approximation and a realistic treatment for the lateral expansion of jets, our results show that a notable break exists in the optical light curve in most cases we calculated in which the physical parameters are varied w...

Two new three-dimensional nickel coordination polymers, [Ni3(BTC)2(4,4'-bpy)2(H2O)5].1.5H2O (1) and [Ni(PDB)(4,4'-bpy)].0.5H2O (2)(4,4'-bpy = bipyridine, BTC = 1,2,4-benzenetricarboxylate, PDB = pyridine-3,4-dicarboxylate), have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR, TGA, and single crystal X-ray diffraction. Both compounds contain 2D scaffol...

Block Truncation Coding (BTC), using a one-bit moment preserving quantizer to quantize a block, is a simple compression method; however, compression with BTC cannot be used to obtain a sufficiently high quality image, especially an image with many edges. In this paper, a new generalized multilevel BTC algorithm, which arbitrarily specifies the number of quantization levels, is developed. In the...

We introduce a simple image coding method, the block truncation coding (BTC) technique, as a novel approach to the construction of colour image databases. It is shown that BTC can not only be used to compress the images thus achieving storage eflciency. the BTC codes can also be used directly to construct image features for effective image retrieval. From the BTC code we have developed an image...

In this paper, Block Turbo Codes (BTC), that is product codes obtained from the concatenation of either two extended or two expurgated BCH codes are evaluated for the HIPERLAN/2 system. Simulations show that only expurgated BTC outperforms the performance of the Convolutional Code (CC) specified in the standard. This result is surprising since expurgated and extended BTC have same performance o...