A5030546473- Reproductive Physiology in Livestock
- GaN-based semiconductor devices and materials
- Semiconductor Quantum Structures and Devices
- Peroxisome Proliferator-Activated Receptors
- Endometriosis Research and Treatment
- Chalcogenide Semiconductor Thin Films
- ZnO doping and properties
- Ga2O3 and related materials
- Circadian rhythm and melatonin
- Estrogen and related hormone effects
- Semiconductor materials and interfaces
- Genetics, Aging, and Longevity in Model Organisms
- Reproductive Biology and Fertility
- Uterine Myomas and Treatments
- Genetic and phenotypic traits in livestock
- Semiconductor materials and devices
- Inflammatory mediators and NSAID effects
- Advanced Electron Microscopy Techniques and Applications
- Connexins and lens biology
- Nanowire Synthesis and Applications
- Physiological and biochemical adaptations
- Solid State Laser Technologies
- Ion-surface interactions and analysis
- interferon and immune responses
- solar cell performance optimization
Institute of Biochemistry and Biophysics, Polish Academy of Sciences
2022-2024
Polish Academy of Sciences
2011-2020
Institute of Animal Reproduction and Food Research
2015-2020
Institute of Physics
2001-2019
Abstract Extracellular vesicles (EVs) are integral to numerous biological processes, yet it is unclear how environmental factors or interactions among individuals within a population affect EV-regulated systems. In Caenorhabditis elegans , the evolutionarily conserved large EVs, known as exophers, part of maternal somatic tissue resource management system. Consequently, offspring exhibiting active exopher biogenesis (exophergenesis) develop faster. Our research focuses on unraveling complex...
A new inexpensive method of the ultra-fast growth ZnO nanorods from aqueous solution is described. This environment friendly and fully reproducible allows in about 1–3 min time on various substrates, without any catalyst or complexing agent. The substrates need to be coated with a layer gold droplets, which nucleate growth. Growth temperature does not exceed 50ºC can performed at atmospheric pressure. Deionised water zinc acetate are used as oxygen precursors, respectively. characterised by...
The properties of superlattices consisting 2 monolayer wide CdTe insertions into ZnTe spacer barriers with thickness ranging from 3 to 75 monolayers are investigated by means transmission electron microscopy and photoluminescence spectroscopy. We show that quasi zero-dimensional islands form in this highly lattice-mismatched system. For smaller than 25 monolayers, the vertically correlated along axis tilted 40° respect growth direction, while for thicker spacers no correlation is observed....
We report on metal-organic vapor phase epitaxial growth of (112¯2) InN GaN templates m-plane (101¯0) sapphire substrates. The in-plane relationship the samples is [1¯1¯23]InN||[0001]sapphire and [11¯00]InN||[12¯10]sapphire, replicating templates. surface shows an undulation along [11¯00]InN,GaN, which attributed to anisotropic diffusion indium/gallium atoms surfaces. rate layers was 3-4 times lower compared c-plane (0001) InN. High resolution transmission electron microscopy showed a relaxed...
In this work we report on the atomic structures, elemental distribution, defects and dislocations of three types semiconductor nanowires: ZnTe, CdTe, complex ZnTe/(Cd,Zn)Te core/shell hetero-nanowires grown by a molecular beam epitaxy (111) Si substrate using vapor-liquid-solid mechanism.The structural properties chemical gradients were measured transmission electron microscopy methods.The nanowires reveal mainly sphalerite structure, however wurtzite also observed.
Adenomyosis is a proliferative uterine dysfunction with unknown aetiology. One possible mechanism of its development involves disturbances in stem cell differentiation tissue. Previously, we identified pluripotent/multipotent cells the bovine uterus, therefore our present study focused on determining expression pluripotency markers, NANOG, OCT4 and SOX2, adenomyotic tissues cells. Immunolocalisation revealed protein SOX2 both normal uteri. mRNA for NANOG was increased obtained from uteri...
The local atomic structure of GeSi self-assembled islands buried in a silicon matrix strongly influences the optical properties such systems. In present paper this was determined by x-ray absorption fine-structure (XAFS) spectroscopy and high resolution transmission electron microscopy (HRTEM) used to build schematic description band model. Quantitative analysis extended XAFS (EXAFS) spectrum performed for three coordination shells around Ge absorbing atom with multiple scattering taken into...
The aim was to compare the blastocyst stages of red deer embryos in respect vitro fertilization (IVF) efficiency, morphology, apoptotic and proliferative abilities, antioxidative potential according reproductive status hinds. We used three experimental groups, including ovaries collected post mortem on 4th 13th days estrous cycle during pregnancy (n = 18). After oocyte maturation, frozen-thawed epididymal semen for IVF. Blastocyst quality, by determining mRNA expression BAX, BCL-2, OCT4,...
We present structure and spatially resolved composition studies by TEM (Transmission Electron Microscopy) XANES (X-ray Absorption Near Edge Structure) of InAIN MOVPE (Metal-Organic Vapor Phase Epitaxy) epilayers containing 16-27 at% indium. Investigations the In L3 edge synchrotron radiation absorption show a significant change post-edge depending on indium content. attribute this to solubility limit phase separation in system. Our measurements suggest that critical is 18% for our growth...
Abstract Background Adenomyosis is a uterine dysfunction defined as the presence of endometrial glands within myometrium. There evidence that proangiogenic factors may play role during development adenomyosis; however, exact mechanism remains unknown. The aim study was to determine action vascular endothelial growth factor A (VEGFA) in tissue and cells adenomyosis. Results Uterine tissues were collected examined for extent Gene protein expression VEGFA its two receptors (VEGFR1 VEGFR2)...
Abstract Adenomyosis is defined as the presence of glandular foci external to endometrium uterus, either in myometrium or/and perimetrium, depending on progress this dysfunction. To date, we showed that steroids secretion and prolactin expression proliferative processes are disturbed during uterine adenomyosis cows. During endometriosis eutopic women, gap junctions down regulated. The transmembrane junction protein, connexin (Cx43) necessary for endometrial morphological, biochemical...
Abstract Extracellular vesicles (EVs) play a crucial role in immune responses, yet it remains unclear whether pathogen metabolites alone can stimulate EV production prior to infection. Using Caenorhabditis elegans , we investigate this question through the lens of exophers – large, evolutionarily conserved EVs known enhance proteostasis, extend lifespan, and improve reproductive fitness. Our study uncovers distinct regulatory mechanisms driving response pathogen-derived volatile non-volatile...
A novel strategy, based on MOCVD, has been employed for preparation of ensembles platinum nanoelectrodes. Pt/Al 2 O 3 films with different Pt loading were deposited in just one step glass capillaries. Nanocomposite varying atomic ratios investigated by both cyclic voltammetry and TEM. Ensembles nanoelectrodes either overlap or no the diffusion layers each nanoelectrode are obtained, depending loading. From TEM measurements average particle size – 7 nm was determined (Figure).
Two samples containing InGaN quantum wells have been grown by metal-organic vapor phase epitaxy on high pressure monocrystalline GaN (0001).Different growth temperatures used to grow the and barriers.In one of samples, a low temperature layer (730 • C) has every well before rising standard values (900 C).The investigated transmission electron microscopy X-ray diffraction.Photoluminescence spectra measured as well.The influence LT-GaN in regard its structural compositional quality sample.
In the present work, software for exit electron wave reconstruction based on iterative approach was implemented and a new method drift-correction of focal series proposed.