Estudo comparativo com e sem o uso de prototipagem em 3D de uma técnica não convencional no planejamento cirúrgico de revisão de artroplastia total de quadril

Revista Brasileira de Ortopedia ◽

10.1055/s-0041-1731659 ◽

2021 ◽

Author(s):

Alonso Ranzzi ◽

Rafael de Luca de Lucena ◽

Carlos Roberto Schwartsmann ◽

Carlos Roberto Galia ◽

Marina Cornelli Girotto ◽

...

Keyword(s):

3D Em

ResumoEste artigo apresenta uma comparação entre dois casos em que havia a necessidade de revisão de artroplastia total de quadril por falha acetabular asséptica. Utilizamos prototipagem em 3D em um dos casos para realizar uma técnica não convencional de moldagem de material de síntese antes do procedimento, com objetivo de avaliar o tempo economizado no transoperatório em casos complexos.

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Faculty Opinions recommendation of Disentangling conformational states of macromolecules in 3D-EM through likelihood optimization.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1066014.518982 ◽

2007 ◽

Author(s):

James K Stoops

Keyword(s):

Conformational States ◽

3D Em

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Protocol for preparation of heterogeneous biological samples for 3D electron microscopy: a case study for insects

Scientific Reports ◽

10.1038/s41598-021-83936-0 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Alexey A. Polilov ◽

Anastasia A. Makarova ◽

Song Pang ◽

C. Shan Xu ◽

Harald Hess

Keyword(s):

Electron Microscopy ◽

Biological Samples ◽

Focused Ion Beam ◽

Ion Beam ◽

Three Dimensional ◽

Entire Volume ◽

Simple Protocol ◽

3D Electron Microscopy ◽

3D Em

AbstractModern morphological and structural studies are coming to a new level by incorporating the latest methods of three-dimensional electron microscopy (3D-EM). One of the key problems for the wide usage of these methods is posed by difficulties with sample preparation, since the methods work poorly with heterogeneous (consisting of tissues different in structure and in chemical composition) samples and require expensive equipment and usually much time. We have developed a simple protocol allows preparing heterogeneous biological samples suitable for 3D-EM in a laboratory that has a standard supply of equipment and reagents for electron microscopy. This protocol, combined with focused ion-beam scanning electron microscopy, makes it possible to study 3D ultrastructure of complex biological samples, e.g., whole insect heads, over their entire volume at the cellular and subcellular levels. The protocol provides new opportunities for many areas of study, including connectomics.

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Macromolecular Structure Visualization Tools at NCMI

Microscopy and Microanalysis ◽

10.1017/s1431927600033900 ◽

2000 ◽

Vol 6 (S2) ◽

pp. 282-283

Author(s):

Matthew Dougherty ◽

Wah Chiu

Keyword(s):

Human Factors ◽

3D Visualization ◽

Three Dimensional ◽

Theoretical Models ◽

Biological Research ◽

Macromolecular Structure ◽

X Ray ◽

Visualization Tools ◽

Types Of Information ◽

3D Em

Sophisticated tools are needed to examine the results of cyro-microscopy. As the size and resolution of three dimensional macromolecular structures steadily improve, and the speed at with which they can be generated increases, researchers are finding they are inundated with larger datasets and at the same time are compelled to expediently evaluate these structures in unforeseen ways. Integration of EM data with other types of information is becoming necessary and routine; for example X-ray data, 3D EM reconstructions, and theoretical models, must be evaluated in concert to discount or propose hypothesis. To create such tools, the developer must take into account not only the empirical and theoretical possibilities, but also they must master the human factors and computational limits. During the last five years, the National Center for Macromolecular Imaging (NCMI) has progressed from a remedial 3D visualization capability to a collection of visualization tools allowing researchers to focus on the discovery phase of biological research.

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3D IC-package-board co-analysis using 3D EM simulation for mobile applications

2013 IEEE 63rd Electronic Components and Technology Conference ◽

10.1109/ectc.2013.6575872 ◽

2013 ◽

Cited By ~ 3

Author(s):

Darryl Kostka ◽

Taigon Song ◽

Sung Kyu Lim

Keyword(s):

Mobile Applications ◽

3D Ic ◽

Em Simulation ◽

3D Em ◽

Ic Package

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Design of Microwave Multibandpass Filters with Quasilumped Resonators

Mathematical Problems in Engineering ◽

10.1155/2015/647302 ◽

2015 ◽

Vol 2015 ◽

pp. 1-14 ◽

Cited By ~ 2

Author(s):

Dejan Miljanović ◽

Milka Potrebić ◽

Dejan V. Tošić

Keyword(s):

Filter Design ◽

Three Dimensional ◽

Design Procedure ◽

Electric Circuit ◽

Microwave Filters ◽

Coupled Resonators ◽

Circuit Element ◽

Filter Structure ◽

3D Em ◽

Physical Dimensions

Design of RF and microwave filters has always been the challenging engineering field. Modern filter design techniques involve the use of the three-dimensional electromagnetic (3D EM) solvers for predicting filter behavior, yielding the most accurate filter characteristics. However, the 3D EM simulations are time consuming. In this paper, we propose electric-circuit models, instead of 3D EM models, suitable for design of RF and microwave filters with quasilumped coupled resonators. Using the diakoptic approach, the 3D filter structure is decomposed into domains that are modeled by electric networks. The coupling between these domains is modeled by capacitors and coupled inductors. Furthermore, we relate the circuit-element values to the physical dimensions of the 3D filter structure. We propose the filter design procedure that is based on the circuit models and fast circuit-level simulations, yielding the element values from which the physical dimensions can be obtained. The obtained dimensions should be slightly refined for achieving the desired filter characteristics. The mathematical problems encountered in the procedure are solved by numerical and symbolic computations. The procedure is exemplified by designing a triple-bandpass filter and validated by measurements on the fabricated filter. The simulation and experimental results are in good agreement.

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