Obesity and osteoporosis, two possibly related conditions, are rapidly expanding health concerns in modern society. Both of them associated with sedentary life style nutrition. To investigate the effects diet-induced obesity voluntary physical activity we used high resolution micro-computed tomography (μCT) together peripheral quantitative computed (pQCT) to examine microstructure distal femoral metaphysis mice.Forty 7-week-old male C57BL/6J mice were assigned 4 groups: control (C), +...

The aim of the present study was to investigate additive manufacturing process for high consistency nanocellulose. Unlike thermoformable plastics, wood derived nanocelluloses are typically processed as aqueous dispersions because they not melt-processable on their own. ability use nanocellulose directly in broadens possibilities regarding usable raw materials and achievable properties thereof. Modern systems capable depositing with micrometer precision, which enables printing accurate...

Abstract Light is a powerful and sustainable resource, but it can be detrimental to the performance longevity of optical devices. Materials with near-zero light reflectance, i.e. superblack materials, are sought improve several light-centered technologies. Here we report simple top-down strategy, guided by computational methods, develop robust materials following metal-free wood delignification carbonization (1500 °C). Subwavelength severed cells evolve under shrinkage stresses, yielding...

Cellulose fiber materials suitable for filtering, insulation, protective, and hygiene applications can be formed using aqueous foam as a carrier phase. The subtle fiber–bubble interaction provides tool which utilized to alter both structural mechanical material properties. Earlier model surface studies have only indicated clear surface-bubble adhesion when the hydrophobicity tension of solution are high enough. In this work, we first show that silica surfaces these basic mechanisms similar...

Foam technology enables the preparation of new fiber-based materials with reduced density and improved mechanical performances. By utilizing multi-scale structural features formed fiber network, it is possible to enhance elasticity lightweight cellulose under compressive loads. Sufficient strength achieved by optimally combining fibers fines different length-scales. Elasticity adding polymers that accumulate at joints, which help network structure recover after compression. This concept was...

TEMPO-oxidized cellulose nanofibrils (TCNFs) have unique properties, which can be utilised in many application fields from printed electronics to packaging. Visual characterisation of TCNFs has been commonly performed using Scanning Electron Microscopy (SEM). However, a novel imaging technique, Helium Ion (HIM), offers benefits over SEM, including higher resolution and the possibility non-conductive samples uncoated. HIM not widely utilized so far, this study capability for was evaluated....

The tensile tests of individual bleached softwood kraft pulp fibers and sheets, as well the micro-mechanical simulation fiber network, suggest that only a part elongation potential is utilized in sheet. stress-strain curves two actual one mimicked classic behavior were applied to micromechanical random networks. Both experimental results simulations indicated bonding has an important role not determining strength but also Additionally, indicate shape curve may have significant influence on...

The in-plane thermal conductivity of porous sintered bronze plates was studied both experimentally and numerically. We developed validated an experimental setup, where the sample placed in vacuum heated while its time-dependent temperature field measured with infrared camera. porosity detailed three-dimensional structure samples were determined by X-ray microtomography. Lattice-Boltzmann simulations tomographic reconstructions used to correct contact area between particles as image analysis...

Abstract The shear rheology of two mechanically manufactured microfibrillated cellulose (MFC) suspensions was studied in a consistency range 0.2–2.0% with pipe rheometer combined ultrasound velocity profiling. MFC behaved at all consistencies as thinning power law fluids. Despite their significantly different particle size, the viscous behavior quantitatively similar. For both suspensions, dependence yield stress and index on an exponent 2.4, similar to some pulp suspensions. flow also law,...

Nuclear positioning and dynamic interactions of viral proteins with nuclear substructures play essential roles during infection DNA viruses. Visualization the intranuclear motility parvovirus replication protein (NS1) in living cells gives insight into specific protein-cellular structure interactions. Confocal analysis highly synchronized infected Norden Laboratory Feline Kidney showed accumulation NS1 discrete interchromosomal foci. fused enhanced yellow fluorescence (NS1-EYFP) provided a...

We set out to study connected porosity of crystalline rock using X-ray microtomography and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) caesium chloride as a contrast agent. Caesium is an important radionuclide regarding the final deposition nuclear waste also forms dense phases that can be readily distinguished by SEM-EDS. Six samples from two sites, Olkiluoto (Finland) Grimsel (Switzerland), where transport properties are being studied in situ, were...

Macroinvertebrate samples are commonly used in biomonitoring to study changes on aquatic ecosystems. Traditionally, specimens identified manually taxa by human experts being time‐consuming and cost intensive. Using the image data of 35 64 features, we propose a novel variant quadratic discriminant analysis for breaking curse dimensionality models. Our variant, called random Bayes array (RBA), uses bagging feature selection similar forest. We explore several variations RBA. consider three...

This work studied the effect of dewatering conditions on behavior fiber foams during and final structure formed, thick, lightweight lignocellulosic materials. The vacuum level, type, consistency, basis weight foam were all varied. During dewatering, time evolution thickness in mold was studied, dryness immediately after measured. density pore size profiles dry materials measured using X-ray microtomography (µCT).

Methods are introduced for analysing the shape and orientation of planar fibres from greyscale images fibrous systems. The sequence image processing techniques needed segmentation is described. identified were interpreted as deformed line segments which two parameters estimated by maximum likelihood method. methods shown to perform quite well simulated systems with known properties. They applied TEM carbon nanotubes embedded in polycarbonate.

We apply and compare a random Bayes forest classifier three traditional classification methods to dataset of complex benthic macroinvertebrate images known taxonomical identity. Since in biomonitoring changes taxa proportions correspond water quality, their correct estimation is pivotal. As errors are passed on the allocated proportions, we explore correction method as confusion matrix correction. Classification were compared using misclassification error χ <sup...

We report here a multipurpose dynamic-interface-based segmentation tool, suitable for segmenting planar, cylindrical, and spherical surfaces in 3D. The method is fast enough to be used conveniently even large images. Its implementation straightforward can easily realized many environments. memory consumption low, the set of parameters small easy understand. based on Edwards-Wilkinson equation, which traditionally model equilibrium fluctuations propagating interface under influence temporally...

3D printing enables sustainable product innovations through novel design, reduced use of materials, and local manufacturing. Sustainable can further be realized using recyclable materials. Cellulose is an abundantly available renewable material. Modified celluloses, such as thermoplastic cellulose esters, are widely used in injection molding applications. The aim this research was to study the properties a cellulose-based composite (cellulose acetate propionate (CAP) polymer matrix with 20...

The saturation curve of a sample paper board was measured with mercury-intrusion porosimetry, and the three-dimensional structure its pore space determined by x-ray tomographic imaging. Ab initio numerical simulation intrusion on reconstruction, based lattice-Boltzmann method, in excellent agreement curve. A invasion-percolation same reconstruction showed good simulation. access function sample, from pore-throat distribution indicated that ink-bottle effect is significant paperlike materials.