Structure, Morphology and Composition of Fur on Different Parts of Reindeer (Rangifer Tarandus) Foot
Publication date: Available online 5 September 2019Source: MicronAuthor(s): Rui Zhang, Guoyu Li, Ruiduo Pan, Qiang Wang, Jianqiao LiAbstractIn the long-distance migration of reindeer in winter, furs of reindeer foot, as the part in direct contacting with the external environment, can play the role of protection and heat preservation. With furs on different parts of the right posterior foot (fibular side, tibial side and planta pedis) as research objects, the microstructure of reindeer foot furs was observed with a scanning electron microscope. The image displayed that the reindeer foot furs was divided into 3 layers, namel...
Source: Micron - September 6, 2019 Category: Biology Source Type: research
Pinopsin and photoreception in the pineal organ of the domestic turkey during post-hatching development
This study was carried out to demonstrate the following: 1) the structures showing immunoreactivity to pinopsin in the turkey pineal organ, 2) the changes of these structures during development, 3) the pinopsin localization in pinealocytes in monolayer cultures, and 4) the role of direct photoreception in the regulation of melatonin secretion in pineal organs in adult turkeys. Pinopsin immunoreactivity was localized in the apical extensions of columnar cells limiting the follicular lumen, in fiber-like structures located between columnar cells in the inner part of follicle wall, in string-shapes or small spherical structur...
Source: Micron - September 4, 2019 Category: Biology Source Type: research
Observation of intracellular protein localization area in a single neuron using gold nanoparticles with a scanning electron microscope
Publication date: Available online 31 August 2019Source: MicronAuthor(s): Toichiro Goto, Nahoko Kasai, Roxana Filip, Koji Sumitomo, Hiroshi NakashimaAbstractThe localization areas of intracellular proteins in rat cortical neurons were visualized using a scanning electron microscope (SEM) coupled with a focused ion beam (FIB) system. To obtain a clear contrast in the SEM images, gold nanoparticles (GNPs) were bound to specific intracellular proteins by antigen-antibody reactions. By obtaining a cross section of the desired location of the neurons by FIB milling under the SEM imaging condition, it was possible to observe the...
Source: Micron - September 1, 2019 Category: Biology Source Type: research
Seasonal exploration of ultrastructure and Na+/K+-ATPase, Na+/K+/2Cl– cotransporter of mitochondria-rich cells in the small intestine of turtles
Publication date: Available online 29 August 2019Source: MicronAuthor(s): Waseem Ali Vistro, Imran Tarique, Abdul Haseeb, Ping Yang, Yufei Huang, Hong Chen, Xuebing Bai, Surfaraz Ali Fazlani, Qiusheng ChenAbstractDespite the exploration of mitochondria-rich cells (MRCs) in different animal classes, very limited information has been documented about MRCs in reptiles. The present study was designed to investigate the effect of seasonal variation on the cell ultrastructure and ion transport protein activity of MRCs during hibernation and non-hibernation of Chinese soft-shelled turtle’s intestine. Transmission electron micro...
Source: Micron - August 30, 2019 Category: Biology Source Type: research
Editorial Board
Publication date: October 2019Source: Micron, Volume 125Author(s): (Source: Micron)
Source: Micron - August 29, 2019 Category: Biology Source Type: research
Short-range ordering induced serrated flow in a carbon contained FeCoCrNiMn high entropy alloy
Publication date: Available online 23 August 2019Source: MicronAuthor(s): Lin Guo, Ji Gu, Xing Gong, Kai Li, Song Ni, Yong Liu, Min SongAbstractPhase stability of high entropy alloys depends significantly on the compositional constituents. Here we report the joint effects of interstitial carbon and compositional inhomogeneity on the mechanical response, particularly the serrated flow, of a carbon doped FeCoCrMnNi high entropy alloy. Detailed microstructural characterizations show that compositional inhomogeneity, including heterogeneous short-range ordering structure, is formed in carbon doped FeCoCrNiMn HEA. The serrated ...
Source: Micron - August 25, 2019 Category: Biology Source Type: research
A Circuit Model for SECCM and Topographic Imaging Method In AC Mode
Publication date: Available online 23 August 2019Source: MicronAuthor(s): Jian Zhuang, Xiaobo Liao, Yalou Deng, Lei Cheng, Ali Akmal Zia, Yong Cai, Maolin ZhouABSTRACTSingle-barrel scanning electrochemical cell microscopy (SECCM) can be used to perform electrochemical activity analysis and sample surface imaging simultaneously. Compared to SECM & SICM in imaging, the most significant advantage of SECCM is that it does not need to immerse sample in solution, which avoids the electrochemical reaction between electrolyte and sample surface. In traditional direct current (DC) topographic imaging method of SECCM, when the menis...
Source: Micron - August 25, 2019 Category: Biology Source Type: research
Wave-packet numerical investigation of thermal diffuse scattering: A time-dependent quantum approach to electron diffraction simulations
Publication date: Available online 23 August 2019Source: MicronAuthor(s): Samantha Rudinsky, Angel S. Sanz, Raynald GauvinAbstractThe effects of thermal diffuse scattering on diffraction of highly-accelerated electrons by crystal lattices are investigated with a method that combines the frozen phonon approximation with an exact numerical solution of the time-dependent Schrödinger equation. The phonon configuration for each single-electron diffraction process is determined by means of Einstein's model. It is shown that this procedure provides the possibility of describing and explaining, in a natural way, after averaging o...
Source: Micron - August 25, 2019 Category: Biology Source Type: research
An Engineering Perspective on the Microstructure and Compression Properties of the Seagull Larus argentatus Feather Rachis
In this study, the microstructure properties of L. argentatus feather rachis were analysed by scanning electron microscopy (SEM). These analysis methods enabled the configuration, structure and compression properties of the rachis to be investigated. The results indicated that the rachis was composed of the outer cortex and the inner medulla. The cortex had a continuous layered nano-fibre composite structure, which bears, transmits, absorbs and disperses the compression force. The medulla had bubble-like cells with a porous-fibre structure, which rapidly absorbs, transmits and consumes compression force and is a suitably l...
Source: Micron - August 20, 2019 Category: Biology Source Type: research
Automated Stitching of Microscope Images of Fluorescence in Cells with Minimal Overlap
In conclusion, quantitative evaluation of the performance of the method proved its improved accuracy compared to other current state-of-art techniques, and it showed robust performance even with noise and a narrow overlapping region between adjacent fields. (Source: Micron)
Source: Micron - August 17, 2019 Category: Biology Source Type: research
Morphological study of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) eggs by X-ray computed microtomography
Publication date: Available online 16 August 2019Source: MicronAuthor(s): Lilian Mirian Oliveira de Morais, Eduardo Inocente Jussiani, João Antonio Cyrino Zequi, Paulo José dos Reis, Avacir Casanova AndrelloAbstractAedes aegypti and Aedes albopictus are vectors of several arboviruses responsible for causing dengue, chikungunya, Zika, and yellow fever viruses and microcephaly, resulting in a public health problem in several countries worldwide. Even in this scenario, studies on the morphology of mosquito eggs are still lacking. In this paper, X-ray microtomography was used to study mosquito egg morphology. Several paramet...
Source: Micron - August 17, 2019 Category: Biology Source Type: research
Correlative FLIM-Confocal-Raman mapping applied to plant lignin composition and autofluorescence
We present a method for correlative FLIM-confocal-Raman imaging and its application to lignin composition studies in the woody stems of the plant model Arabidopsis thaliana. Lignin is autofluorescent and exhibits characteristic fluorescence lifetimes attributed to its composition. Its composition can be further resolved by Raman microscopy to multiple peaks that represent different components. A lignin biosynthetic mutant is found to have a marked difference in fluorescence lifetime and corresponds to a change in composition as demonstrated by the Raman output. (Source: Micron)
Source: Micron - August 12, 2019 Category: Biology Source Type: research
Effect of propionic acid on the morphology of the amygdala in adolescent male rats and their behavior
Publication date: Available online 6 August 2019Source: MicronAuthor(s): Giorgi Lobzhanidze, Mzia Zhvania (Source: Micron)
Source: Micron - August 7, 2019 Category: Biology Source Type: research
Variability and composition of calcium oxalate crystals in embryos-seedlings-adult plants of the globose cacti Mammillaria uncinata
Publication date: Available online 2 August 2019Source: MicronAuthor(s): Brenda Micaela López-Macías, Sandra Elena Morales-Martínez, Sofía Loza-Cornejo, Claudio Frausto-Reyes, Teresa Terrazas, Rita Judith Patakfalvi, Martín Ortiz-Morales, María de la Luz Miranda BeltránAbstractThe morphology and elemental composition of crystals in embryos, seedlings and adult plants of the globose cacti Mammillaria uncinata were studied. Samples of mature fruits and adult plants were collected. To obtain embryos and seedlings, seeds from mature fruits were germinated under laboratory conditions. Both embryos and seedlings as well a...
Source: Micron - August 3, 2019 Category: Biology Source Type: research
Human macrophages and osteoclasts resorb β-tricalcium phosphate in vitro but not mouse macrophages
Publication date: Available online 30 July 2019Source: MicronAuthor(s): Baptiste Arbez, Florence Manero, Guillaume Mabilleau, Hélène Libouban, Daniel ChappardAbstractβ-TCP is a resorbable bony biomaterial but its biodegradation mechanisms in vivo remains unclear. Osteoclast can resorb β-TCP but a role for macrophages has also been suggested by in vivo studies. However no in vitro study has clearly evidenced the action of macrophages in the resorption process. We prepared flat β-TCP tablets with a smooth surface to investigate the in vitro capability of murine (RAW 264.7) and human macrophage cells (PBMCs) to resorb th...
Source: Micron - July 31, 2019 Category: Biology Source Type: research
