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Temperature and electron concentration dependences of 1/f noise in Hg1−xCdxTe – evidence for a mobility fluctuations mechanism
No full textThis is a set of research data related to the article titled " Temperature and electron concentration dependences of 1/f noise in Hg1−xCdxTe – evidence for a mobility fluctuations mechanism", Nanoscale, 2025,17, 7281-7288.README.txt file contains detailed description of all dataset attached</p
Metabolomic profiling directly from intact subcutaneous and visceral fat samples obtained from patients with obesity
No full textThis study investigates metabolic differences and similarities between subcutaneous and visceral adipose tissue in individuals with obesity using minimally invasive, intact-tissue metabolomics. Paired adipose tissue samples were collected during bariatric surgery and analyzed using solid-phase microextraction (SPME) coupled with complementary liquid chromatography–mass spectrometry platforms. Both targeted LC-MS/MS (Shimadzu triple quadrupole) and high-resolution LC-HRMS analyses were employed to characterize metabolite profiles related to energy metabolism, amino acid metabolism, redox balance, and inflammation. The dataset provides curated metabolomics data from human adipose tissue, including biological samples, pooled quality controls, and extraction blanks, enabling assessment of analytical reproducibility and background signals. By avoiding tissue homogenization and solvent-intensive extraction, this study offers a complementary perspective on bioavailable metabolites within native adipose tissue architecture. The data are intended to support reuse in comparative metabolomics, methodological evaluation of SPME-based sampling, and future meta-analyses of adipose tissue metabolism in obesity.</p
The effect of rape seed sprouting on the quality and shelf life of the obtained oil
No full textThe files contain raw data (titration records and Rancimat test outputs) as well as processed data (results obtained from calculations based on chromatograms). Data were collected using research instrumentation, including a YL6100 GC gas chromatograph with dedicated software, an HP/Agilent 8453 spectrophotometer with ChemStation software, and a 892 Professional Rancimat oxidative stability analyzer with Metrohm StabNet software.</p
Preliminary evaluation of the toxicity of ibuprofen present in the aquatic environment
No full textThe aim of the study was to assess acute and chronic toxicity to selected aquatic organisms. The scope of work included conducting tests with bioindicators from various trophic levels, i.e. the marine bacterium Allivibrio fischeri (Microtox test), the algae Pseudokirchneriella subcapitata (Algaltoxkit F test) and the aquatic plant Spirodela polyrhiza (Spirodela Duckweed Toxkit test). The aim of the project was also to assess the possibility of phytoremediation of ibuprofen from the aquatic environment using the plants Elodea canadensis, Myriophyllum alterniflorum and Lemna minor.The ibuprofen concentrations tested were: 5 mg/L; 10 mg/L; 20 mg/L; 50 mg/L; 100 mg/L; 200 mg/L.The tests were conducted on two substrates: Hoagland's medium and surface water. The documentation contains the results of research conducted as part of the above-mentioned project. It has been grouped into folders and files according to the research conducted on:- photographic documentation of changes in plant physiology as a result of exposure to ibuprofen, together with a description,- results of changes in biomass growth of plants exposed to ibuprofen, together with a description of the research,- results of the Algaltoxkit F test, together with a description of the research and photographic documentation,- results of the Duckweek toxkit test, together with a description of the research and photographic documentation,- results of the Microtox test, together with a description of the research.</p
Enhancement of the Superconducting Transition Temperature in Mn-doped CaKFe4As4 Processed by the High gas-pressure and High temperature Synthesis Method
No full textExperimental data collected for the preparation of the manuscript: "Enhancement of the Superconducting Transition Temperature in Mn-doped CaKFe4As4 Processed by the High gas-pressure and High temperature Synthesis Method"Title: Enhancement of the Superconducting Transition Temperature in Mn-doped CaKFe4As4 Processed by the High gas-pressure and High temperature Synthesis MethodAuthors: Manasa Manasa, Mohammad Azam, Tatiana Zajarniuk, Svitlana Stelmakh, Tomasz Cetner, Andrzej Morawski, Shiv J. SinghJournal of Superconductivity and Novel Magnetism 39 (2026) 10Abstract:A series of Mn-doped CaKFe4As4 samples, CaK(Fe1−xMnx)4As4 with x values of 0, 0.005, 0.01, 0.02, 0.03, 0.04, and 0.05, are synthesized using two distinct routes: conventional synthesis process at ambient pressure (CSP), and high gas-pressure and high-temperature synthesis (HP-HTS) method. Comprehensive characterizations are performed on these samples to investigate their superconducting properties. This study examines the effects of Mn substitution at Fe sites in the FeAs layer on the superconducting properties of the CaKFe4As4 (1144) material. The HP-HTS process improves the microstructure and phase purity of the parent sample (x = 0), resulting in an enhanced superconducting transition temperature (Tc). In contrast, Mn doping via the CSP method in CaKFe4As4 reduces the sample quality and superconducting performance. Notably, the high-pressure synthesis method leads to an increase in the Tc by 3 to 7 K, particularly at low Mn concentrations. While the critical current density (Jc) of the parent sample (x = 0) shows a significant enhancement under the applied magnetic fields, Jc decreases for Mn-doped CaKFe4As4 bulks. These results demonstrate that high-pressure synthesis is an effective approach to improve the superconducting properties of Mn-doped 1144 compounds.Note: In the published article,Figure 2 is Backscattered electron (BSE) images and the corresponding elemental mapping for CaK(Fe1−xMnx)4As4 polycrystal samples. (No dataset for this figure)Figure. 1 (a) Powder XRD pattern of CaK(Fe1−xMnx)4As4 polycrystalline samples with x = 0, 0_HIP, 0.02, 0.02_HIP, 0.03 and 0.03_HIP is presented. The variation of (b) Lattice constant ‘a’, (c) Lattice constant ‘c’, and (d) Unit cell volume ‘V’ is shown for all CaK(Fe1−xMnx)4As4 samples synthesized using the CSP under ambient pressure and the HP-HTS method with the Mn doping contents (x).Figure. 3 (a) The temperature dependence of electrical resistivity (ρ) up to room temperature, and (b) the low-temperature variation of resistivity up to 40 K for CaK(Fe1−xMnx)4As4 polycrystalline samples prepared by both the CSP and HP-HTS methods.Figure. 4 (a) The temperature dependence of the normalized magnetic susceptibility (4πM/H) measured in zero-field-cooled (ZFC) and field cooled (FC) modes for CaK(Fe1−xMnx)4As4 bulk samples with x = 0, x = 0_HIP, x = 0.02, x = 0.02_HIP under an applied magnetic field of 20 Oe. (b) The magnetic field variation of the critical current density (Jc) at 5 K up to the magnetic field of 9 T for the samples with x = 0, x = 0_HIP, x = 0.005_HIP, x = 0.01_HIP, x = 0.02_HIP and x = 0.03_HIP.Figure. 5 The variation of (a) the room temperature resistivity (ρ300K), (b) the superconducting onset transition temperature Tc onset, (c) the residual resistivity ratio (RRR = ρ300K / ρ40K), (d) transition width (ΔT = Tconset - Tcoffset), and (e) the critical current density (Jc) at 0 T at 5 K as a function of Mn-concentration (x) are presented for CaK(Fe1−xMnx)4As4 polycrystalline samples prepared by the CSP at ambient pressure and the HP-HTS method.Figure. 6 Normalized graph of (a) the lattice constant ‘a’, (b) the lattice constant ‘c’, and (c) the unit cell volume ‘V’ as a function of Mn doping content (x) are presented for all CaK(Fe1−xMnx)4As4 samples synthesized by the CSP method at ambient pressure, compared with previously reported data for Mn-doped SmFeAs(O, F) (denoted as “1111” in the figure) [Phys. C: Superconductivity. 494, 57–61 (2013)] and Mn-doped FeSe0.5Te0.5 (denoted as “11” in the figure) [Superconductor Science and Technology, 24, 045009 (2011)]. (d) A comparative summary of the superconducting transition temperatures (Tc) of CaK(Fe1−xMnx)4As4 bulks prepared by CSP at ambient pressure and HP-HTS methods, together with reported Mn doped CaKFe4As4 single-crystals grown by the conventional method at ambient pressure [Journal of Physics: Condensed Matter 35(39), 395801 (2023)], is shown with Mn concentration (x). The transition temperature values are determined from both the resistivity and magnetic measurements</p
Analysis of microstructure during in-situ TEM heating of FeNiCr/C coatings for hydrogen evolution reaction
No full textThe package contains dataset to article entitled "In-situ TEM heating of FeNiCr/C coatings for hydrogen evolution reaction"The files present the results of investigations of FeNiCr/C coatings fabricated with magnetron sputtering method in an atmosphere of argon and various amounts of acetylene with transmission electron microscope (TEM) backed by phase analysis done with selected area electron diffraction (SAED) and chemical analysis carried out with energy dispersive X-ray spectroscopy (EDS). The files contain the images of microstructures, chemical analysis of elements distribution and SAED patterns.This data is presented in the form of .jpg/.png/.bmp files readable with popular computer programs like IrfanView.</p
Analiza redukcji termicznej tlenku grafenu poprzez wysokotemperaturowe wygrzewanie w atmosferze redukującej CH4.
No full textMetadane powiązane z publikacją.</p
Redirecting Formate Delivery toward Alkenes: Markovnikov α-Carboxylation via Cobalt/Photoredox/Bro̷nsted Acid Catalysis
No full textAdvances in photocatalysis have significantly expanded the chemist’s toolbox, enabling the use of sustainable C-1 feedstocks for the synthesis of carboxylic acids. While linear-selective carboxylation of olefins with formate salts involving CO2·– generation and subsequent Giese-type addition has previously been reported, Markovnikov selectivity has remained underexplored. Herein, we report a new photochemical approach for the selective synthesis of branched carboxylic acids using formate salts. The switch in regioselectivity is achieved through the synergistic integration of a metal-hydride hydrogen atom transfer (MHAT) strategy with cobalt catalysis, a Bro̷nsted acid, and photocatalysis. A bench- and air-stable N,N-diprotonated DABCO salt is introduced as a novel precatalyst that facilitates both catalytic cycles. This design enables a balanced equilibrium between formate activation and the MHAT cycle, allowing the persistent radical effect to operate effectively, which was explored both experimentally and computationally. The method accommodates a broad range of olefins, including bioactive compounds, and gives access to carboxylic acids bearing all-carbon quaternary centers with Markovnikov selectivity. The operational simplicity and versatility of the protocol make it well-suited for late-stage modification and isotope labeling of natural products and biologically active scaffolds.</p
Najczęściej wykorzystywane wskaźniki finansowe w Grupie Wyszehradzkiej
No full textZbiór danych obejmuje ponad 200 000 firm z Grupy Wyszehradzkiej (V4) w latach 2006–2021. Wybrane wskaźniki finansowe to najczęściej występujące wskaźniki w modelach prognozowania upadłości w V4. Każdy plik obejmuje osobny rok dla każdego kraju z V4.</p
Phytotoxicity of landfill leachate after treatment
No full textThe deposited data were collected as part of the research project entitled "Preliminary studies on the treatment of leachates from municipal waste landfills in plant activated sludge systems", financed by the National Science Centre under the Miniatura competition (no. DEC-2023/07/X/ST10/00063).The aim of this study was to determine the phytotoxicity of raw landfill leachate (LL) and LL after treatment by analyzing its effects on root growth and seed germination in plants irrigated with LL.Project duration from 30.05.2023 to 29.05.2024. Project carried out at the Wroclaw University of Environmental and Life Sciences.The attached files have been placed as XLSX files.The dataset consists of the following files: phytotoxicity of landfill leachate after treatment -presented in the publication "Phytotoxicity of landfill leachate after treatment – assessment using seed germination bioassays".The results obtained using the methods presented in detail in the methodology and supplementary materials to the article.Toxicity tests were conducted using a Phytotoxkit™ acute toxicity bioassay, using three seed species: the dicotyledonous plants Sinapis alba L., Lepidium sativum L., and monocotyledonous plant Sorghum saccharatum.</p