Three-sectioning method: A procedure for studying hard tissues and large pieces under light and electron microscopy
Publication date: May 2020Source: Micron, Volume 132Author(s): Jorge Gayoso, Manuel Garrosa, Sara Gayoso, Carlos Alberto Rodríguez-Arias, Miguel Ángel Martin-Ferrero, Manuel José GayosoAbstractThe histological study of hard pieces such as tendons and calcified lesions and tissues is a field that has been gaining increased attention owing to the rapid development of implantable prostheses, among other factors. In these studies, serial sectioning is utilized to detect areas of interest throughout the entire piece, as it enables the application of the appropriate light and electron microscopy techniques in these areas. We ...
Source: Micron - February 13, 2020 Category: Biology Source Type: research
Controllable growth of two-dimensional iron carbide in steels under accumulation deformation
Publication date: Available online 8 February 2020Source: MicronAuthor(s): Yong Zhang, Zhenhai Xia, Fang Liu, Zuoxiang Qin, Xing LuAbstractTwo dimensional (2D) materials such as metal carbides are attractive owing to their unique structures and various potential applications. Although various synthetic methods have been developed for fabrication of 2D materials, it is still challenging to directly synthesize 2D carbides. Herein, we propose a new approach to convert in-situ 3D iron carbide into defect free 2D one in conventional carbon steels by controlling the deformation accumulation to drive atomic rearrangement within t...
Source: Micron - February 9, 2020 Category: Biology Source Type: research
Editorial Board
Publication date: April 2020Source: Micron, Volume 131Author(s): (Source: Micron)
Source: Micron - February 7, 2020 Category: Biology Source Type: research
The effect of microstructure parameters on the residual stresses in the ultrafine-grained sheets
Publication date: Available online 3 February 2020Source: MicronAuthor(s): Farshad Nazari, Mohammad Honarpisheh, Haiyan ZhaoAbstractIn this research, the influence of microstructure parameters on the residual stresses of ultrafine-grained sheets was investigated. For this purpose, the constrained groove pressing (CGP) process was carried out on the copper sheets with 3 mm thickness, and residual stresses of the CGPed sheets was measured using the contour method. Microstructure of the CGPed specimens was evaluated by the optical microscopy, micro x-ray diffraction (micro-XRD), and transmission electron microscopy (TEM) ex...
Source: Micron - February 4, 2020 Category: Biology Source Type: research
The three-sectioning method: A procedure for studying hard tissues and large pieces under light and electron microscopy
Publication date: Available online 25 January 2020Source: MicronAuthor(s): Jorge Gayoso, Manuel Garrosa, Sara Gayoso, Carlos Alberto Rodríguez-Arias, Miguel Ángel Martin-Ferrero, Manuel José GayosoAbstractThe histological study of hard pieces such as tendons, calcified lesions and tissues is an attractive field whose interest is increasing due, among other factors, to the rapid development of implantable prostheses. For these studies, serial sectioning to find the areas of interest throughout the entire piece is very useful, making it possible to specifically apply the appropriate light and electron microscopy technique...
Source: Micron - January 26, 2020 Category: Biology Source Type: research
Sensory armature and stylets of the mouthparts of Stephanitis nashi (Hemiptera: Cimicomorpha: Tingidae), their morphology and function
Publication date: Available online 23 January 2020Source: MicronAuthor(s): Yan Wang, Jolanta Brożek, Wu DaiAbstractMouthparts are important appendages that are specialized for detection of food sources and feeding. The pear lace bug, Stephanitis nashi Esaki and Takeya, is a major pest of pear in China, sucking the sap and affecting plant growth. Fine structure of the mouthparts including distribution and abundance of receptor sensilla occurring of adult S. nashi was examined using scanning electron microscopy and structural details are described for the first time. The mouthparts of S. nashi are generally similar to those...
Source: Micron - January 24, 2020 Category: Biology Source Type: research
Life and its traces in Antarctica's McMurdo Dry Valley paleolakes: a survey of preservation
Publication date: April 2020Source: Micron, Volume 131Author(s): Samuel R. Greenfield, Scott W. Tighe, Yu Bai, David S. Goerlitz, Michele Von Turkovich, Douglas J. Taatjes, Julie A. Dragon, Sarah Stewart JohnsonAbstractThe extremely cold and arid conditions of Antarctica make it uniquely positioned to investigate fundamental questions regarding the persistence of life in extreme environments. Within the McMurdo Dry Valleys and surrounding mountain ranges are multiple ancient relict lakes, paleolakes, with lacustrine deposits spanning from thousands to millions of years in age. Here we present data from light microscopy, sc...
Source: Micron - January 21, 2020 Category: Biology Source Type: research
Editorial Board
Publication date: March 2020Source: Micron, Volume 130Author(s): (Source: Micron)
Source: Micron - January 18, 2020 Category: Biology Source Type: research
Morphological evolution of HAZ microstructures in low carbon steel during simulated welding thermal cycle
Publication date: Available online 15 January 2020Source: MicronAuthor(s): Liangyun Lan, Guoqing ShaoAbstractIt is necessary to reveal the derivation of bainite microstructures with different appearance because these complex appearances are closely related to the transformation nature and their final mechanical properties. In this work, the morphological evolution of HAZ microstructures during simulated welding thermal cycle was investigated in a low carbon steel that was intentionally treated with combined addition of Ti and Mg elements. The inclusions present in the matrix have a complex core/shell composite structure co...
Source: Micron - January 15, 2020 Category: Biology Source Type: research
Machining accuracy detection of PCB hole by X-ray micro-CT
Publication date: Available online 13 January 2020Source: MicronAuthor(s): Wenbin Tao, Ying Xu, Hao Liu, Chengyong Wang, Lijuan ZhengAbstractOver the past few years, non-destructive testing plays an increasingly important role in the accuracy detection of PCB manufacturing. Due to the complexity of PCB materials and the development of PCB towards high density. So far, no method has been described which can semi-automatically detect the machining accuracy of PCB array holes based on three-dimensional structural data. Here, we propose an efficient method to detect the machining accuracy of PCB array holes by X-ray micro-CT. ...
Source: Micron - January 14, 2020 Category: Biology Source Type: research
Probing the surface ultrastructure of Brevibacillus laterosporus using atomic force microscopy
Publication date: Available online 13 January 2020Source: MicronAuthor(s): Khalid Alzahrani, Arun Kumar Shukla, Javed Alam, Abdurahman A. Niazy, Abdullah M. Alsouwaileh, Mansour Alhoshan, Jamal Khalid, Hamdan S. AlghamadiAbstractOne of the main obstacles to studying the surface ultrastructure of microbial cells by atomic force microscopy (AFM) is determining how to immobilize live cells on the AFM substrates. Each method has its own advantages and disadvantages. The aim of this study was to characterize a new simple and inexpensive method using two types of polyethersulfone (PES) membrane filters that differ in pore size (...
Source: Micron - January 14, 2020 Category: Biology Source Type: research
In situ observation of twin-assisted grain growth in nanometer-scaled metal
Publication date: Available online 11 January 2020Source: MicronAuthor(s): Suyun He, Chunyang Wang, Lu Qi, Hengqiang Ye, Kui DuAbstractFor nanometer-scaled materials, grain boundary behaviors, such as grain coalescence and grain boundary migration, contribute significantly to the plasticity of materials. While mechanically driven grain growth has been observed in nanometer-scaled metals, its underlying mechanisms are still poorly understood especially for those correlated with twins. By using in situ aberration-corrected transmission electron microscopy and precession electron diffraction, we have directly revealed nanotwi...
Source: Micron - January 11, 2020 Category: Biology Source Type: research
Nano and micro biomechanical analyses of the nucleus pulposus after in situ immobilization in rats
This study aimed to characterize changes in the elastic modulus of the collagen fibrils in the nucleus pulposus at the nanoscale and correlate this with micro-biomechanical properties of the nucleus pulposus after immobilization, in addition to observation of tissue histology and its gene expressions. An immobilization system was used on the rat tail with an external fixation device. The elastic modulus was measured using both nano and micro probes for atomic force microscopy after 4 and 8 weeks of immobilization. Histology of the tissue was observed following hematoxylin and eosin staining. Gene expression in the annulus ...
Source: Micron - January 8, 2020 Category: Biology Source Type: research
Biophysical Changes Caused by Altered MUC13 Expression in Pancreatic Cancer Cells
ConclusionsMUC13 led to significant biophysical changes in PanCa cells and which exhibited characteristic phenotypic changes in cells demonstrated in previous work from our lab. This work gives insight into the use of biophysical measurements that could be used to help diagnose or monitor cancers as well as determine the effects of genetic alterations at a mechanical level.Graphical abstract (Source: Micron)
Source: Micron - January 5, 2020 Category: Biology Source Type: research
Molecular Dynamics Simulation of Strengthening Dependence on Precipitate Cr Composition in Fe-15at.%Cr Alloy
Publication date: Available online 3 January 2020Source: MicronAuthor(s): Shehu Adam Ibrahim, Qingyu Wang, Yue Zhang, Mohammed Ado, Gyang Davou Chung, M. Mustafa AzeemAbstractMolecular Dynamics simulation was employed to study precipitate composition dependence on strengthening. Edge dislocation interaction with pure, 80at.%, and 60at.% Cr precipitates of different sizes in a matrix of Fe-15at.%Cr was investigated. The precipitates were found to be relatively hard. This is evident from the absence of shearing mechanism after the dislocation has bypassed them, the formation of an Orowan-like dislocation shape, and comparati...
Source: Micron - January 5, 2020 Category: Biology Source Type: research
