Phase-change memory (PCM) has emerged in recent years as the most promising technology for non-volatile memory due to its very high throughput performance and read/write endurance as well as future scalability. Multilevel functionality is crucial for increasing the capacity and thus enhancing the cost per GByte competitiveness of the PCM technology. However, storage of multiple resistance level...

BACKGROUND Dedifferentiation of chondrocytes remains a major problem for cartilage tissue engineering. Chondrocytes loss differentiated phenotype in in vitro culture that is undesired for repair strategies. The chondrocyte is surrounded by a pericellular matrix (PCM), together forming the chondron. PCM has a positive effect on the maintenance of chondrocyte phenotype during culture in compariso...

This research aimed to evaluate the thermal properties of new formulations of phase change materials (PCMs)-epoxy composites, containing a thickening agent and a thermally conductive phase. The composite specimens produced consisted of composites fabricated using (a) inorganic PCMs (hydrated salts), epoxy resins and aluminum particulates or (b) organic PCM (paraffin), epoxy resins, and copper p...

Phase change memory (PCM) is a promising memory technology that can offer higher memory capacity than DRAM. Unfortunately, PCM’s access latencies and energies are higher than DRAM and its endurance is lower. DRAM-PCM hybrid memory systems use DRAM as a cache to PCM, to achieve the low access latencies and energies, and high endurance of DRAM, while taking advantage of the large PCM capacity. A ...

The hyaluronan-rich pericellular matrix (PCM) plays physical and chemical roles in biological processes ranging from brain plasticity, to adhesion-dependent phenomena such as cell migration, to the onset of cancer. This study investigates how the spatial distribution of the large negatively charged bottlebrush proteoglycan, aggrecan, impacts PCM morphology and cell surface access. The highly lo...

INTRODUCTION: Structure and composition of articular cartilage as well as metabolic activity of chondrocytes (cartilage cells) change in osteoarthritis (OA) [1]. Among these changes, cell volume has been reported to increase [1,2]. Furthermore, the structure, composition and mechanical properties of the pericellular matrix (PCM) alter in OA [3]. However, the role of PCM in modulating volumetric...

This paper presents the ALCA (Asymmetric Link Collision Avoidance) protocol. ALCA was designed to deal with a known deficiency of the Basic Scheme Gomez et al., 2001 for power control in 802.11 ad hoc networks, which occurs when links become asymmetrical as a result of power control. The proposed ALCA mechanism conveys transmission duration information to these terminals through a simple modifi...

Phase change memory (PCM) is a byte-addressable type of non-volatile memory. Compared to other volatile and non-volatile memories, PCM is two to four times denser than dynamic random access memory (DRAM). It has better read latency than NAND flash memory. Even though the write endurance of PCM is 10 times better than NAND flash memory, it is still limited to times per PCM cell. When researchers...

The expansion of the fields application polymer composite materials (PCM), emergence their new compositions and structures is reason for development improvement existing methods non-destructive testing. One most important tasks in performance testing PCM or selection control modes. complexity solving this problem related to anisotropy properties (thermophysical, acoustical, etc.). article descr...

Centrosomes are the main microtubule-organizing centers in animal cells. Centrosomes consist of a pair of centrioles surrounded by a matrix of pericentriolar material (PCM) that assembles from cytoplasmic components. In Caenorhabditis elegans embryos, interactions between the coiled-coil proteins SPD-5 and SPD-2 and the kinase PLK-1 are critical for PCM assembly. However, it is not known whethe...