Search results for "Mesh"
showing 10 items of 885 documents
The shell matrix of the freshwater mussel Unio pictorum (Paleoheterodonta, Unionoida). Involvement of acidic polysaccharides from glycoproteins in na…
2007
13 pages; International audience; Among molluscs, the shell biomineralization process is controlled by a set of extracellular macromolecular components secreted by the calcifying mantle. In spite of several studies, these components are mainly known in bivalves from only few members of pteriomorph groups. In the present case, we investigated the biochemical properties of the aragonitic shell of the freshwater bivalve Unio pictorum (Paleoheterodonta, Unionoida). Analysis of the amino acid composition reveals a high amount of glycine, aspartate and alanine in the acid-soluble extract, whereas the acid-insoluble one is rich in alanine and glycine. Monosaccharidic analysis indicates that the in…
Editorial: The Effect of the COVID-19 Pandemic on Cancer Patients and Healthcare
2022
Memory-Efficient Sliding Window Progressive Meshes
2007
Progressive mesh is a data structure that encodes a continuous spectrum of mesh approximations. Sliding window progressive meshes (SWPM) minimize data transfers between CPU and GPU by storing mesh data in static on-GPU memory buffers [For01]. The main disadvantages of the original SWPM algorithm are poor vertex cache usage efficiency, and big resulting datasets. Connectivity-based algorithm [KT04] achieves a good vertex cache coherence but it does not address the problem of high memory utilization. In this paper, we describe estimates for the size of memory buffers, and describe methods to reduce the index datasets. We achieve 20% reduction due to the use hierarchical data structures (clust…
COMPARING THE BIOLOGICAL RESPONSE OF CONVENTIONAL STATIC MESHES AND DYNAMIC RESPONSIVE IMPLANTS
2015
Introduction: Inguinal hernia repair represent one of the most performed surgical procedure in the world. Notwithstanding the progress in prosthetic material and surgical procedures, the rate of complications remains high. Actually, chronic pain and discomfort are often source of debate among herniologists. Poor quality of tissue incorporation, such as stiff scar plaque leading to mesh shrinkage, is the typical results of conventional static implants that may lead to these adverse events. Recently, a new type of prosthesis, a 3D dynamic responsive implant, was introduced to the market. This device, designed to be positioned fixation-free, seems to induce the development of viable and more s…
LAPAROSCOPIC SACROCOLPOPEXY IN THE TREATMENT OF VAGINAL VAULT PROLAPSE AND RECTOCELE. RETROSPECTIVE STUDY OF 64 CASES
2003
Objectives: To evaluate the results of the laparoscopic sacrocolpopexy using a polypropylene mesh. Methods: We performed laparoscopic sacrocolpopexy on 64 pts who presented a prolapse of the vaginal vault between the II and the IV degree according to HWS classification. The mean age was 65 (range 58-76) with variable parity. The vaginal vault prolapse was present after abdominal hysterectomy in 33 pts.(51%) and after vaginal hysterectomy in 24 pts. (38%). 7 pts. (11%) were affected by an isterocele of III -IV . 8pts(12%) presented a vault prolapse of I degree, 16pts.(25%) of II degree, 15pts.(23%) of III degree, 18 pts.(%) of VI degree.They were also affected by different degrees of cystour…
Immunoaffinity purification and characterization of mitochondrial membrane-bound D-3-hydroxybutyrate dehydrogenase from Jaculus orientalis.
2008
Abstract Background The interconversion of two important energy metabolites, 3-hydroxybutyrate and acetoacetate (the major ketone bodies), is catalyzed by D-3-hydroxybutyrate dehydrogenase (BDH1: EC 1.1.1.30), a NAD+-dependent enzyme. The eukaryotic enzyme is bound to the mitochondrial inner membrane and harbors a unique lecithin-dependent activity. Here, we report an advanced purification method of the mammalian BDH applied to the liver enzyme from jerboa (Jaculus orientalis), a hibernating rodent adapted to extreme diet and environmental conditions. Results Purifying BDH from jerboa liver overcomes its low specific activity in mitochondria for further biochemical characterization of the e…
HIGH QUALITY TEXTURE MAPPING PROCESS AIMED AT THE OPTIMIZATION OF 3D STRUCTURED LIGHT MODELS
2019
Abstract. This article presents the evaluation of a pipeline to develop a high-quality texture mapping implementation which makes it possible to carry out a semantic high-quality 3D textured model. Due to geometric errors such as camera parameters or limited image resolution or varying environmental parameters, the calculation of a surface texture from 2D images could present several color errors. And, sometimes, it needs adjustments to the RGB or lightness information on a defined part of the texture. The texture mapping procedure is composed of mesh parameterization, mesh partitioning, mesh segmentation unwraps, UV map and projection of island, UV layout optimization, mesh packing and mes…
FROM SFM TO 3D PRINT: AUTOMATED WORKFLOW ADDRESSED TO PRACTITIONER AIMED AT THE CONSERVATION AND RESTAURATION
2017
Abstract. In In the last years there has been an increasing use of digital techniques for conservation and restoration purposes. Among these, a very dominant rule is played by the use of digital photogrammetry packages (Agisoft Photoscan, 3D Zephir) which allow to obtain in few steps 3D textured models of real objects. Combined with digital documentation technologies digital fabrication technologies can be employed in a variety of ways to assist in heritage documentation, conservation and dissemination. This paper will give to practitioners an overview on the state of the art available technologies and a feasible workflow for optimizing point cloud and polygon mesh datasets for the purpose …
Autoantigens in the trabecular meshwork and glaucoma‐specific alterations in the natural autoantibody repertoire
2019
Abstract Objectives Primary open‐angle glaucoma (POAG) is a neurodegenerative disorder leading to a gradual vision loss caused by progressive damage to the optic nerve. Immunological processes are proposed to be involved in POAG pathogenesis. Altered serological autoantibody levels have been frequently reported, but complete analyses of the natural autoantibodies with respect to disease‐related alterations are scarce. Here, we provide an explorative analysis of pathways and biological processes that may involve naturally immunogenic proteins and highlight POAG‐specific alterations. Methods Mass spectrometry‐based antibody‐mediated identification of autoantigens (MS‐AMIDA) was carried out in…