Publications by authors named "Jozef Kaiser"

Prismatic lithium-ion batteries (LIBs) are considered promising electric energy sources in electromobility applications due to their efficient space utilization. However, their sensitivity to external and internal influences and reduced durability lead to inflation risk and potential explosions throughout their lifecycle. These critical processes are strongly influenced by the inner construction of the cell, especially concerning the coating and mechanical fixation.

View Article and Find Full Text PDF

This study introduces the first fabrication of porous titanium/hydroxyapatite interpenetrating phase composites through an innovative processing method. The approach combines additive manufacturing of a customized titanium skeleton with the infiltration of an injectable hydroxyapatite foam, followed by in situ foam hardening at physiological temperature. This biomimetic process circumvents ceramic sintering and metal casting, effectively avoiding the formation of secondary phases that can impair mechanical performance.

View Article and Find Full Text PDF
Article Synopsis
  • Laser-induced breakdown spectroscopy (LIBS) enhances immunochemical assays using indirect label detection with nanoparticles, specifically yttrium-based photon-upconversion nanoparticles (UCNPs), achieving sensitivity comparable to established methods like fluorescence immunoassays.
  • The study improves the sensitivity of UCNP-based Tag-LIBS by incorporating magnetic microbeads (MBs), which allow for analyte preconcentration and significantly lowers the limit of detection (LOD) to 4.0 pg/mL, a notable advancement over traditional microtiter plate methods.
  • The technique demonstrates robust performance in clinical samples and shows strong correlation with standard assays, indicating that MB-based Tag-LIBS offers fast readout, high sensitivity, and potential for multiplexing without relying
View Article and Find Full Text PDF

People are exposed to microplastics (MPs) on a large scale in everyday life. However, it is not clear whether MPs can also be distributed and retained in certain tissues. Therefore, the development of analytical methods capable of detecting MPs in specific human organs/tissues is of utmost importance.

View Article and Find Full Text PDF

Consensus holds that pottery technology came to Central Europe from the Northern Balkans with independent pottery traditions existing concurrently in Eastern Europe. An unusual grass-tempered pottery dating back to around 5800 cal BC found in lake sediments at Santovka, Slovakia, predated the earliest known Neolithic pottery in the region (~ 5500 cal BC), suggesting unexplored narratives of pottery introduction. Analyses of the pottery's technology, origin, and grass temper shedding light on ceramic traditions' spread can unveil mobility patterns and community lifestyles.

View Article and Find Full Text PDF

Correlative imaging of cutaneous tumors provides additional information to the standard histopathologic examination. However, the joint progress in the establishment of analytical techniques, such as Laser-Induced Breakdown Spectroscopy (LIBS) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) in clinical practice is still limited. Their combination provides complementary information as it is also shown in our study in terms of major biotic (Ca, Mg, and P) and trace (Cu and Zn) elements.

View Article and Find Full Text PDF
Article Synopsis
  • Mammals have different types of teeth (heterodonty) with simpler teeth in the front and more complex ones in the back, and this study looks at the genes involved in their early development.
  • Researchers analyzed gene expression patterns in the lower jaw of mice at two early development stages, finding significant differences in signaling molecules (like BMP and FGF) between the front and back regions of the jaw.
  • The study highlights the role of the SATB2 gene in developing incisor teeth and its surprising expression near molars, indicating that gene functions can vary significantly depending on the jaw's location.
View Article and Find Full Text PDF
Article Synopsis
  • This study focuses on Xenopus laevis, an important model organism in developmental biology, specifically regarding its late developmental stages, which are often underrepresented in research.
  • Researchers used micro-computed tomography (micro-CT) to create detailed 3D models of Xenopus at various stages from tadpoles to adults, highlighting morphological changes and structures such as the skeleton, teeth, and organs.
  • The resulting high-resolution dataset is a valuable resource for future studies in vertebrate development, with potential applications in virtual reality, 3D printing, and educational initiatives.
View Article and Find Full Text PDF

The chondrocranium provides the key initial support for the fetal brain, jaws and cranial sensory organs in all vertebrates. The patterns of shaping and growth of the chondrocranium set up species-specific development of the entire craniofacial complex. The 3D development of chondrocranium have been studied primarily in animal model organisms, such as mice or zebrafish.

View Article and Find Full Text PDF
Article Synopsis
  • - The study investigates how craniofacial skeletal structures develop and how understanding this could improve treatments for congenital malformations through genome-wide RNA transcription analysis from human embryonic facial mesenchyme.
  • - Researchers identified active regulatory elements linked to the PI3/AKT/mTORC1/autophagy pathway and tested its role in craniofacial development using genetic and pharmacological methods in mice and zebrafish.
  • - Findings suggest that mTORC1 signaling influences craniofacial formation in response to environmental factors, particularly nutrition, highlighting its potential role in facial shape variations and developmental plasticity.
View Article and Find Full Text PDF

The Hindbrain Choroid Plexus is a complex, cerebrospinal fluid-secreting tissue that projects into the 4th vertebrate brain ventricle. Despite its irreplaceability in the development and homeostasis of the entire central nervous system, the research of Hindbrain Choroid Plexus and other Choroid Plexuses has been neglected by neuroscientists for decades. One of the obstacles is the lack of tools that describe the complex shape of the Hindbrain Choroid Plexus in the context of brain ventricles.

View Article and Find Full Text PDF

Primary cilia are cellular surface projections enriched in receptors and signaling molecules, acting as signaling hubs that respond to stimuli. Malfunctions in primary cilia have been linked to human diseases, including retinopathies and ocular defects. Here, we focus on TMEM107, a protein localized to the transition zone of primary cilia.

View Article and Find Full Text PDF

Mineralized tissues, such as bones or teeth, are essential structures of all vertebrates. They enable rapid movement, protection, and food processing, in addition to providing physiological functions. Although the development, regeneration, and pathogenesis of teeth and bones have been intensely studied, there is currently no tool to accurately follow the dynamics of growth and healing of these vital tissues in space and time.

View Article and Find Full Text PDF

In this study we use comparative genomics to uncover a gene with uncharacterized function (1700011H14Rik/C14orf105/CCDC198), which we hereby name FAME (Factor Associated with Metabolism and Energy). We observe that FAME shows an unusually high evolutionary divergence in birds and mammals. Through the comparison of single nucleotide polymorphisms, we identify gene flow of FAME from Neandertals into modern humans.

View Article and Find Full Text PDF

Formation of oriented myofibrils is a key event in musculoskeletal development. However, the mechanisms that drive myocyte orientation and fusion to control muscle directionality in adults remain enigmatic. Here, we demonstrate that the developing skeleton instructs the directional outgrowth of skeletal muscle and other soft tissues during limb and facial morphogenesis in zebrafish and mouse.

View Article and Find Full Text PDF

Cross-section preparation of painting micro-samples is part of their routine analysis. This type of preparation can be used for several analytical techniques, such as scanning electron microscopy, Fourier-transform infrared spectroscopy, Raman spectroscopy, and optical microscopy. These techniques offer high-resolution imaging and/or elemental information, providing access to technical and material data important for the interpretation, preservation, and restoration of painted artworks.

View Article and Find Full Text PDF

Scanning electron microscopy (SEM) is a common method for the analysis of painting micro-samples. The high resolution of this technique offers precise surface analysis and can be coupled with an energy-dispersive spectrometer for the acquisition of the elemental composition. For light microscopy and SEM analysis, the painting micro-samples are commonly prepared as cross-sections, where the micro-sample positioned on the side is embedded in a resin.

View Article and Find Full Text PDF