Miracle-dz/UniFAR-FTUs huggingface dataset:
Wybrane podmiotowe i sytuacyjne uwarunkowania dobrostanu pracowników branży gastronomicznej – badanie dzienniczkowe

The article presents an analysis of connection between constructs discussed in psychology, sociology or management they are management styles, emotionality type of subordinates and their professional well-being. The theoretical basis for the measurement of management styles is the Blake and Mouton Managerial Grid. In the case of emotionality, the basis is the concept of Watson and Clark. The next part of the article deals with employee well-being, which is defined in terms of personal and situational factors and presents models related to the issue, focusing on the Vitamin Model by Warr. The aim of the article was to investigate and describe the relationships between the aforementioned variables the perceived style of managing managers and the perceived level of well-being in the workplace, with simultaneous control of the characteristic affective states of the surveyed employees. The research was conducted using the diary method in a fast-food restaurant in Lublin, with the use of a battery of questionnaires (Assessment of the style of management on the steering grid, KAP and PANAS-X). Referring to the verification of the research hypotheses presented in the article, it was found that negative emotionality is significantly related to the low level of employee well-being. In accordance with the assumptions, it also turned out that a stronger attitude of the manager towards his people has a positive impact on the company's performance while manager's high orientation on the task has a negative impact. The influence of management style is stronger than the emotionality of the employees.
Redistribution of Nickel, Cobalt, Manganese, Zinc, and Cadmium via the Phloem in Young and Maturing Wheat

Abstract The phloem mobility of heavy metals is relevant to the redistribution of micronutrients and pollutants and, ultimately, to the quality of harvested plant parts. The relative mobility in wheat may vary considerably between different cations. In the study reported here, radio-labeled nickel (Ni), cobalt (Co), manganese (Mn), zinc (Zn) and cadmium (Cd) were introduced into either intact young winter wheat (Triticum aestivum L. cv. Arina) via a leaf flap, or detached maturing shoots via the cut stem. Elements fed into the lamina of the second leaf of 21-day-old plants were translocated to the younger (expanding) leaves and to the roots but not or only in trace amounts to the first (already fully expanded) leaf. The 63Ni and 65Zn were exported more rapidly compared with the other heavy metals. Most of 54Mn was retained in the originally labeled leaf. The peduncle of some maturing shoots was steam-girdled below the ear to distinguish between xylem and phloem transport. This phloem interruption reduced the content of 63Ni in the ear to about 25%. Intermediate effects were observed for 65Zn, 57Co, and 109Cd. Total 54Mn accumulation in the ear was hardly affected by steam-girdling, indicating a transport of this element within the xylem to the ear. These results suggest that the relative phloem mobility of Ni and Zn in young wheat plants and in maturing wheat shoots is higher than the mobility of Co and Cd, whereas the mobility of Mn is very low.
INFRARED SPECTRA AND CRYSTALLINE PHASE TRANSITIONS OF AMMONIUM NITRATE

The infrared spectra of solid crystalline films of ammonium nitrate were measured at temperatures ranging between the melting point (169 °C) and liquid air temperature (−190 °C). Four different spectra were obtained which are shown to belong to phase I, II, IV, and (very probably) VII. Phases III and V were not encountered; only transitions , , and were observed. A spectrum measured at −190 °C after rapid cooling is shown to correspond to a mixture of phases IV and VII. The symmetry properties of the different phases are discussed in relation with their infrared spectra.
Non-enzymatic hydrogen peroxide sensor based on a nanoporous gold electrode modified with platinum nanoparticles

A novel non-enzymatic electrochemical sensor based on a nanoporous gold electrode modified with platinum nanoparticles was constructed for the determination of hydrogen peroxide (H2O2). Platinum nanoparticles exhibit good electrocatalytic activity towards hydrogen peroxide. The nanoporous gold (NPG) increases the effective surface area and has the capacity to promote electron-transfer reactions. With electrodeposition of Pt nanoparticles (NPs) on the surface of the nanoporous gold, the modified Au electrode afforded a fast, sensitive and selective electrochemical method for the determination of H2O2. The linear range for the detection of H2O2 was from 1.0 × 10−7 M to 2.0 × 10−5 M while the calculated limit of detection was 7.2 × 10−8 M on the basis of the 3σ/slope (σ represents the standard deviation of the blank samples). These findings could lead to the widespread use of electrochemical sensors to detect H2O2.
Submicrocavity Structure of Water between Hydrophobic and Hydrophilic Walls as Revealed by Optical Cavitation

Abstract Laser-induced cavitation in a thin water layer bounded by hydrophobic and hydrophilic surfaces has been explored. For hydrophobic surfaces, the cavitation probability is enhanced and its threshold lowered. For hydrophilic walls, the formation of a macroscopic gas bubble during the laser pulse is consistent with earlier work on the existence of submicrobubble (bubston) clusters in bulk water (Bunkin et al., submitted for publication; Bunkin and Lobeyev, JETP Lett. Engl. Transl. 58, 91 (1993)). The increased cavitation probability observed with hydrophobic surfaces can be linked to an enhanced concentration of gas-filled submicrocavities close to the surface as compared to those in bulk water. The phenomenon appears to be closely related to the long-range hydrophobic interactions between surfaces and to the slippage of water over hydrophobic surfaces.
Effects of Extracts from Mixed Culture with Tricholoma Matsutake Mycelium and Cordyceps Militaris Mycelium on Blood Glucose in Streptozotocin-Induced Diabetic Rats

최근 경제 발전에 따른 식생활 습관의 변화와 인구의 고령화 및 각종 스트레스와 관련하여 현대 생명과학의 큰 발전에도 불 구하고, 당뇨병은 암 및 순환기계 질환과 더불어 극복되지 않은 3대 질병 중의 하나로 지목되어 사회적으로도 관심의 대상이 되 고 있으며, 발병률이 증가됨에 따라 그 예방과 치료에 대한 관심 이 집중되고 있다. 당뇨병을 한의학에서는 消渴이라 하며, 上消, 中消, 下消 세 가지 증상으로 분류한다. 上消는 혓바닥이 붉어지 고 갈라지며 갈증이 몹시 나서 물이 자꾸 땅기는 것이고, 中消는 음식을 잘 먹으면서도 여위고 저절로 땀이 나며 大便이 燥하고 小便이 잦으며, 下消는 煩燥하고 引飮하며, 耳輪이 焦乾하고 小 便이 기름같고, 腿膝이 마르고 가늘다고 하였다 당뇨병이 발병되면 인슐린의 분비가 감소되거나 인슐린의 작용에 문제가 생겨 혈액내의 영양소가 조직 속으로 들어 갈 수 없어 여러 대사성 질환이 발생하게 된다. 당뇨병 치료법으로는 운동요법과 식이요법, 약물요법이 있다. 현재 혈당 상승 예방을 위하여 사용되고 있는 경구 혈당 강하제에는 sulfonylurea제제 및 biguanide제제가 있고, 최근에는 troglitazone제제를 사용한 송이버섯과 동충하초 균사체 혼합배양 추출물의 투여가 Streptozotocin으로 유발한 당뇨 쥐의 혈당에 미치는 영향
Dielectric relaxation in polyimide nanofoamed films with low dielectric constant

Polyimide nanofoamed films have been prepared from the polyimide precursors (PMDA-ODA) and poly(ethylene oxide) (PEO) in N,N-dimethylacetamide. The dielectric properties of the films were studied over the temperature range of −150–150°C and a frequency range of 1Hz–10MHz. The frequency dependence of the dielectric constant for nanofoamed films with different amounts of PEO was studied. An relaxation process at below the glass transition temperature of the polyimide nanofoamed films was found. The peak value of the dielectric loss increased with increasing amount of PEO.
Composites in energy storing prosthetic feet

Composites reinforced with carbon and glass fibers have become the commonly used material in the production of energy storing prosthetic feet (ESPF/elastic feet prostheses). Their properties ensure a stable and light structure that allows for accumulation, storage and release of energy during walking, thus ensuring an increase in gait efficiency. Depending on the modification of the composite in terms of fiber selection, their form, type of combination and mass content, and the design of the prosthesis, the foot obtains different efficiency as the ratio of energy released to energy accumulated. The article characterizes ESPF’s in terms of mechanical and functional properties, compared properties of fibers and resins indicating the material that meets best the requirements towards elastic feet prostheses. Possible modifications of composite materials that influence the material properties and the work of the foot are also presented as well as an overview of selected ESPF prosthetic feet available on the market.
STM study of surface species formed by methanol adsorption on stoichiometric and reduced ZnO(1010) surfaces

Methanol adsorption on the stoichiometric and slightly reduced ZnO(1010) surfaces has been studied by scanning tunneling microscopy (STM). On the stoichiometric surface it was found that adsorbed methanol formed two types of ordered structures by dissociative adsorption in different modes, one of which was a dominant two-dimensional island structure residing on surface zinc atom rows, while the other was a linear chain structure residing between two surface zinc rows. In addition, a mobile phase of molecularly adsorbed methanol was deduced occupying the areas aside the ordered domains and keeping in equilibrium with the island structure. In contrast to the stoichiometric surface, on the slightly reduced surface, only the linear chain structure was observed as an ordered phase, accompanied by an unusual type of line defects. The STM observations indicated that the drastic change of surface properties occurred on the whole surface not at the specific sites such as point vacancies.
Curvature as design concept for semiconducting benzodithiophene-containing polymers in organic field effect transistors

Organic semiconductors are expected to play an important role in low-cost and energy-efficient electronic products, especially transistors. Our concept to improve the active materials is to introduce curvature into the polymer backbone. The beneficial contribution of the curvature is shown by a series of five isomeric polymers which demonstrate that an intermediate degree of curvature is the optimum compromise between good solubility and high order in the film. In this way, a polythiophene is developed that is easily synthesized, well soluble, exhibits high charge-carrier mobility using mild annealing conditions, and is stable under operation. When processed on a flexible substrate, it shows average mobilities as high as 0.5 cm2V-1s-1 .
Technical Report : 3D mesh Segmentation Application to glasses

Object segmentation in meaningfull parts is an important research topic as these have become a part of many mesh and object manipulation algorithms in computer graphics, geometric modelling and computer aided design. In particular, tasks that were before realized by experts are more and more assumed by people without particular formation in geometric or computer graphic problems. So there is a need to have some ergonomic tools that have expert know-how while user keep control on specific constraints to its particular application. Here, we present how for segmentation purpose we model expert know-how and two algorithms that can be used to make segmentation task. One is generic and the other is specialized for glasses segmentations.
Shrinkage Properties of Peroxide-Enzyme-Biopolymer Treated Wool

Incorporating an enzyme in the alkaline peroxide treatment bath enhances wool wet-tability and the effectiveness of subsequently applied chitosan biopolymer. Wool whiteness is also significantly enhanced. Wool knitted fabric thus treated is shrink resistant at the machine-washable level, which is one of the most important end-user demands. The formation of ionic bonds between the new sulphonic groups generated on the wool fiber surface and chitosan contribute to the shrink resistance of H2O2 + enzyme/chitosan treated wool. As a result of excessive increases in enzyme concentration in the peroxide bath, the wool surface cysteic acid content decreases, thus diminishing both the efficiency of post-applied chitosan solution and the shrink resistance.
An Investigation of the Value of Using Concept Maps in General Chemistry

This paper reports a qualitative investigation of the effects of integrating concept maps into the freshman-level general chemistry curriculum. Ten volunteers each from two sections of general chemistry for science majors were interviewed to assess the degree to which they connected concepts from different domains. The sections were equivalent except for the integration of concept maps into one section. Concept maps were generated from the interviews and scored by multiple analysts. Students in the experimental section had significantly more links and nodes in their concept maps than students in the traditional section. There were no significant differences between the two sections in terms of the students' GPAs or years of high school chemistry.
Plant water relations as affected by heavy metal stress: A review

Abstract High metal availability, arising from mining and industrial activities, disposal of sewage sludge or soil acidification, is an increasing problem in agriculture and forestry. Metal toxicity causes multiple direct and indirect effects in plants which concern practically all physiological functions. In this review we consider the effects of excess heavy metals and aluminium on those functions which will alter plant water relations. After a brief comment on the metal effects in cell walls and plasmalemma, and their consequences for cell expansion growth, the influences of high metal availability on the factors which regulate water entry and water exit in plants are considered. Emphasis is placed on the importance of distinguishing between low water availability in mine and serpentine soils and toxicity effects in plants which may impair the regulation of a plant's water household. Examples on water relations of both plants grown on metalliferous soil and hydroponics are discussed. The effects of met.
Water-related instability in TFTs formed using deposited gate oxides

Polycrystalline silicon thin film transistors formed with undensified gate oxides have shown instability phenomena not observed for TFTS formed with oxides annealed at 600 degrees C or above. These instabilities are related to ionized water in the oxide, with positive (H+) and negative (OH-) ions drifting on the application of gate bias to produce both negative and positive threshold voltage shifts. The mobility for the OH- ions is found to be lower than that for the H+ ions, as might be expected. In addition, kinks in the subthreshold characteristic are sometimes seen, and these are shown to be due to a sidewall effect. The water diffuses in from the atmosphere laterally under the gate electrode, and this gives rise to a gate length dependence of the effects. From this dependence a diffusion coefficient approximately 3*10-12 cm2 s-1 is deduced at room temperature. This is some eight orders of magnitude higher than that for fused silica, and confirms the porosity of the material.
Effect of Confinement on Polymer Segmental Motion and Ion Mobility in PEO/Layered Silicate Nanocomposites

Department of Physics, UniVersity of Ioannina, 451 10Ioannina, Greece; Biomedical Research Institute, Foundationfor Research and Technology-Hellas, P.O. Box 1186, 451 10Ioannina, Greece; Institute of Electronic Structure andLaser, Foundation for Research and Technology-Hellas,P.O. Box 1527, 711 10 Heraklion Crete, Greece;Department of Physics, UniVersity of Crete, 710 03Heraklion Crete, Greece; and Department of ChemicalEngineering, Aristotle UniVersity of Thessaloniki,541 24 Thessaloniki, GreeceReceiVed April 13, 2006ReVised Manuscript ReceiVed June 21, 2006The behavior of polymer fluids in restricted space can bevery different from that in the bulk, especially when themolecules are confined to dimensions comparable to their sizes.The dynamics of macromolecules in thin films or in porousmedia has attracted the scientific interest for more than a decadewith the general trends in the data and the outstanding issueshighlighted in a number of reviews.
Absorption Spectra and Reactions of Colloidal Bimetallic Nanoparticles Containing Mercury

Silver and mercury ions are reduced in a common solution by sodium borohydride in the presence of poly(ethyleneimine). Colloidal alloy particles are formed, whose plasmon absorption band is blue-shifted with increasing mercury-to-silver ratio. The reduction mechanism is rather complex: large mercury “drops” are first formed, although silver ions are reduced simultaneously. This effect is explained by an interaction of the two metal redox systems, as silver clusters are reoxidized by mercury ions. The final particles are formed in a reaction of the mercury drops with reduced silver clusters, yielding amalgam particles smaller than the mercury drops. These processes are followed by spectrophotometric and light-scattering measurements. The alloy colloids are stable up to a mercury to silver molar ratio of 2. Upon exposure to air, part of the mercury in the alloy particles is oxidized.
Scale up of NiTi shape memory alloy production by EBM

The usual process to produce NiTi shape memory alloy is by vacuum induction melting (VIM) using a graphite crucible, which causes contamination of the melt with carbon. Contamination with oxygen originates from the residual oxygen inside the melting chamber. An alternative process to produce NiTi alloys is by electron beam melting (EBM) using a water-cooled copper crucible that eliminates carbon contamination, and the oxygen contamination would be minimal due to operation in a vacuum of better than 10 -2 Pa. In a previous work, it was demonstrated that the technique is feasible for button shaped samples weighing around 30g. The present work presents the results on the scale up program that enables the production of larger samples/ingots. The results are very promising in terms of chemical composition homogeneity as well as in terms of carbon contamination, the latter being four to ten times lower than the commercially-produced VIM products, and in terms of final oxygen content which is shown to depend primarily on the starting raw materials.
Interactive comment on “Asymmetry and pathways of inter-hemispheric transport in the upper troposphere and lower stratosphere” by Xiaolu Yan et al

This manuscript examines the interhemispheric transport from the surface to upper troposphere / lower stratosphere in the other hemisphere using simulations from the CLaMS model. The manuscript contains material that is of interest to ACP readers, and I think contains some new results that warrant publication. However, major revisions are required to the manuscript before it is suitable for publication. As described below, there needs to be (1) improved referencing and discussion of previous studies, (2) more precise discussion of transport in lower stratosphere versus that in upper troposphere, and (3) clearer statements on what is new (as opposed to confirming previous studies).
Use of recycled tires crumb rubber to remove organic contaminants from aqueous and gaseous phases

Abstract Tire crumb rubber (TCR) was used to remove poly-aromatic hydrocarbons (acenaphthene and phenanthrene) and gasoline components in aqueous phase and toluene in gaseous phase. The initial concentrations were below the solubility of each contaminant. To better understand the role of the main components of TCR, the removal was also evaluated using carbon black (CB) and styrene-butadiene polymer (SBP). The Scatchard plots suggested multiple interactions between adsorbates and TCR, whereas a single interaction became evident for CB and SBP. The removal of gasoline components, and toluene and o-xylene in gasoline was evaluated using total ion current mode and selective ion monitoring mode, respectively. A gas chromatographer was modified to evaluate the removal of gaseous toluene. Toluene was injected at a rate of 30 μL/h. The isotherm was elaborated using pressures between 2.5 and 40 psi. The maximum uptake capacities (K f) for TCR calculated from Freundlich’s equation for acenaphthene and phenanthrene .
Particle capture and plugging in packed-bed reactors

Fine particles in the liquid feed to packed-bed reactors can be trapped in the catalyst bed, which eventually leads to excessive pressure drop. The fine particles can include coke, corrosion products, clays, and other minerals. The catalyst bed functions as a granular filter to remove particles much smaller than the size of the pores between the catalyst pellets. The efficiency for trapping the particles in the packed bed depends on the flow fields and the attractive forces between the packing and the fine particles. In order to understand the capture of fine particles from nonaqueous media, we studied a model system of carbon black in kerosene. Columns packed with glass beads and a catalyst were operated over a range of flow velocities to Reynolds numbers from 0.1 to 2.3, on the basis of the diameter of the packing in the bed. Flow was in the upward and in the downward direction. The filter coefficient and efficiency were sensitive to liquid velocity. Trapping was slightly more efficient with downward fl.
Hydrothermal Synthesis of Fe-montmorillonite in Si-Fe-Mg System

Fe-montmorillonite (Na0.3Fe3+1.7Mg0.3Si4O10(OH)2·H2O) was synthesized hydrothermally for 24 hours at 100 and 200 °C. XRD analysis showed the synthesized material to be crystalline Fe-montmorillonite without impurities, with d001=11-14.3 A and d06=1.52-1.53 A, respectively. The particle size of the material was found to be > 500 A by TEM. The X-ray photoelectron binding energy of Fe indicated that iron is present in smectite as Fe3+.
Sedimentation of Substitutional Solute Atoms in Condensed Matter: New Type of Diffusion

Ultra-strong gravitational field (Mega-gravity field) causes the sedimentation of even atoms (diffusion), and is expected to create a nonequilibrium crystal-chemical state in multi-component condensed matter. However, the materials science research under mega-gravity field has now remained as an unexploited field, while the sedimentation of molecules or polymer had been used in biochemistory. We presented a self-consistent diffusion equation for sedimentation of atoms in condensed matter. Next, we developed an ultracentrifuge apparatus to generate strong acceleration field of over 1 million (1x106) g at temperature range up to 〜300 °C, and, recently, succeeded in realization of the sedimentation of substitutional solute atoms in some alloys of Bi-Sb, In-Pb, Bi-Pb systems, etc. The diffusion coefficients in sedimentation on Bi-Sb alloy were estimated to be much greater than those at normal conditions by a factor of >20. It is suggested that the sedimentation of substitutional atoms in solids or liquids can be explained in a new type of diffusion, where the diffusion mechanism for substitutional solute atoms was yet unknown. In this article, the recent progress in the investigation of sedimentation of atoms under mega-gravity field is reviewed, and the diffusion mechanism is discussed. The application of the mega-gravity field is also discussed.
Determination of Pu isotopes in vegetation using a new on-line FI-ICP-DRC-MS protocol after microwave digestion

A new protocol for the determination of Pu isotopes in leaves has been developed. The method consists of microwave sample digestion, flow injection on-line preconcentration/matrix separation, sample desolvation and introduction using an APEX unit and elemental determination using ICP-MS with a dynamic reaction cell. The preconcentration and matrix separation was performed using an anion-exchange resin (AG MP-1M). Detection limits as low as 2.9 fg g−1 and 0.46 fg g−1 were obtained for 239Pu and other Pu isotopes (240Pu, 241Pu, 242Pu and 244Pu), respectively, for 10 g of NIST-SRM 1515, Apple Leaves. The yield recovery of Pu was also determined for different leaf samples collected locally and spiked with a known concentration of 239Pu and 242Pu.