Objective(s): Scaffolds are considered as biological substitutes in bone defects which improve and accelerate the healing process of surrounding tissue. In recent years a major challenge in biomaterials is to produce porous materials with properties similar to bone tissue. In this study, the natural bioactive hydroxyapatite scaffolds with nano Diopside /Forstrite coating was successfully synthe...

Introduction: As the ability to repair cartilage tissue in body is limited, finding a suitable method for cartilage regeneration has gained the attention of many scholars. For this purpose, scaffold structure and morphology, along with cell culture on it, can be a novel method to treat cartilage injuries, osteoarthritis. Methods: In this study, polyhydroxybutyrate (PHB) is selected as the scaf...

Gelatin is considered as a partially degraded product of collagen and it is a biodegradable polymer which can be used to produce scaffolds for tissue engineering. Three-dimensional, porous gelatin scaffolds were fabricated by thermally induced phase separation and freeze-drying method. Their porous structure and pore size were characterized by scanning electron microscopy. Scaffolds with differ...

Discrete morphological operations with line segments are notoriously hard to implement. In this paper we study different possible implementations of the line structuring element, compare them, and examine their rotation and translation invariance in the continuous-domain sense. That is, we are interested in obtaining a morphological operator that is invariant to rotations and translations of th...

This paper presents the first step of a research woric which aims at predicting the propensity of Professional Virtual Communities (PVC) to create temporary alliances of business. This work is starting from the observation that up to now these business oriented communities laclc a conceptual frameworic for analyzing this issue in a theoretical way. Our approach consists in developing such a con...

Finding the genes that exist within a DNA sequence and assigning them biological features and functions is one of the biggest challenges of Genomics. This task, called annotation, has to be as accurate and reliable as possible, because this information will be applied in other researches. Ideally, each sequence should be annotated and validated by a human expert, who has the knowledge to infer ...

Objective(s): Fabrication of scaffolds with improved mechanical properties and favorable cellular compatibility is crucial for many tissue engineering applications. This study was aimed to improve mechanical and biological properties of polycaprolactone (PCL), which is a common biocompatible and biodegradable synthetic polymer in tissue engineering. Nanofibrillated chitosan (NC) was used as a n...

objective: the development of combining mesenchymal stem cells (mscs) with surface modified three-dimensional (3d) biomaterial scaffold provides a desirable alternative for replacement of damaged and diseased tissue. nanofibrous scaffolds serve as suitable environment for cell attachment and proliferation due to their similarity to the physical dimension of the natural extracellular matrix. in ...

For a stationary and isotropic random closed set Z in R it is a well-known fact that its covariance C(t) and its spherical contact distribution function H̃s(t) admit at t = 0 a derivative which is a multiple of the surface intensity of Z. Within the quite general setting of gentle sets, Kiderlen and Rataj [10] show a more general result (covering both previous cases) for the derivative of a hit ...