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Search results for: WOODEN SHAFT
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Structural Change in New Member States (1995–2005): Shift–Share Analysis of Productivity Growth and its Determinants
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Structural change in New Member States (1995-2005): shift-share analysis of productivity growth and its determinants
PublicationThe chapter focuses on the latest developments in ten New MemberStates (presented vis-à-vis EU-15countries), seen from the perspective of structural change and quality upgrading of their economic structures. In particular, recently released disaggregated labor statistics are used,allowing to analyse the process of labor reallocation and productivitychanges associated with inter-and intra-industrystructural change. Since the mid-1990s...
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The metagenomic approach to characterization of the microbial community shift during the long-term cultivation of anammox-enriched granular sludge
PublicationA metagenomic approach was used to investigate how the microbial community composition changes when an anammox-based granular sludge reactor is seeded with nitritation-anammox biomass from a wastewater treatment plant. In the seed sample, the abundance of Candidatus Kuenenia stuttgartiensis was similar to Candidatus Jettenia caeni (12.63 vs. 11.68%). This biomass was typical in terms of microbial nitrogen conversion; both ammonia...
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High Efficiency Dual-Active-Bridge Converter with Triple-Phase-Shift Control for Battery Charger of Electric Vehicles
PublicationAn optimal modulation scheme with triple-phase-shift (TPS) control could increase the efficiency in the entire load range for a dual-active-bridge (DAB) converter under wide output voltage range conditions. Therefore, this study proposes a convergent approach to TPS mode selection, coupled with an optimal modulation scheme, ensuring the circuit’s efficiency over the entire range in the realm of a high-power and high-efficiency...
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Analytical Estimation of Power Losses in a Dual Active Bridge Converter Controlled with a Single-Phase Shift Switching Scheme
PublicationMicro-grid solutions around the world rely on the operation of DC/DC power conver- sion systems. The most commonly used solution for these topologies is the use of a dual active bridge (DAB) converter. Increasing the efficiency and reliability of this system contributes to the improvement in the stability of the entire microgrid. This paper discussed an analytical method of energy efficiency and power loss estimation in a single...
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The cost of reproduction in women: Reproductive effort and oxidative stress in premenopausal and postmenopausal American women
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Lithuania inland waterways and its prospects
PublicationInland waterways have some traditions in Lithuania and in neighbor Countries, but during last 50 years other modes of transport move out inland waterway transport from real economical activity. In the same time inland waterways is the main green and sustainable transport system. In this article are presented analysis situation, methodology for the ships optimal using in inland waterways, forecasting of the possible cargo and passenger...
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Microwave Ring Resonator Based Pressure Sensor
PublicationThis paper demonstrates a microwave pressure sensor, which is based on microstrip line-fed ring resonators. The first ring resonator is loaded with the concentric cylindrical shafts, while the same number of the hollow shanks as the shafts are mounted on the second ring resonator. The arrangement of the cylindrical shaft and hollow shank allows for mechanical movement between two substrates while maintaining electrical contact....
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The Self-employment of Women in Azerbaijan
PublicationAzerbaijan has a population of more than 10 million, of which women accounted for 50% in 2020. At the same time, 93% of Azerbaijan’s citizens describe themselves as Muslims. Since the beginning of independence, Azerbaijan has been a secular state by virtue of Article 48 of the Constitution, which guarantees the freedom of worship, choice, or non-practice of religion and the freedom of...
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Potrzeby wodne plantacji wiklinowych
PublicationOmówiono doświadczenia nad nawadnianiem wikliny w Osobowicach koło Wrocławia i w Uppsali w Szwecji. Wskazano, że potrzeby wodne wikliny są tak duże jak plantacji świerkowych i przekraczają wskaźnik 2,2 wobec parowania penmanowskiego. Są to najwyższe notowane wartości parowania, a dodatkowo wiklina intensywnie transpiruje wodę pod koniec okresu wegetacyjnego, zwłaszcza we wrześniu, czego nie obserwuje się u żadnych innych roślin...
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SiC-based phase-shift dual half bridge DC-DC converter as a key component of multilevel cascaded MV converters
PublicationThe paper describes SiC-based dual half bridge (DHB) DC-DC converter considered as a key component of high frequency isolated multilevel cascaded medium voltage converters. Two topologies of bi-directional DC-DC converters: the resonant half-bridge DC-DC converter and the phase-shift DHB converter are compared in the paper. Experimental results of SiC-based 50 kHz DHB DC-DC converter are presented in the paper.
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Nowe prawo wodne – informacje ogólne
PublicationNowa ustawa prawo wodne (I). Informacje ogólne o ustawie. Zawartość ustawy. Podstawowe definicje.
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Śródlądowe budowle wodne -aspekty geotechniczne
PublicationW niniejszej pracy przedstawiono ogólne zasady programowanie badań geotechnicznych przyjęcia parametrów obliczeniowych, wymagań odnośnie mozliwych stanów granicznych oraz obciążenia działające na budowlę wodną wraz z analizą współczynników bezpieczeństwa stosowanych w budownictwie wodnym. W kolejnych rozdziałach omówiono metody badania bezpieczeństwa oraz weryfikacji stateczności ziemnych budowli wodnych, w tym stany graniczne...
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Nowe prawo wodne – problemy powodziowe
PublicationZmiana prawa wodnego. Problemy ochrony przed powodzią w ustawie. Nowe obowiązki gmin. Jakie są zmiany w porównaniu z wcześniejszymi regulacjami oraz tradycjami.
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Mechanical testing of technical woven fabrics
PublicationThis article presents a review of technical fabrics testing methods used by the authors on the basis of their experience with research on properties of polytetrefluoroethylene-coated fabrics used for Forest Opera in Sopot (Poland). First, the different types of testing methods used for description of mechanical properties (uniaxial tensile tests, biaxial tensile tests and shear tests) of technical woven fabrics are described. The...
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Special model for coated woven fabrics.
PublicationW pracy przedstawiono podstawowe równania konstytutywne modelu sieci gęstej oraz podano parametry materiałowe dla dwu wybranych tkanin technicznych. Opisano specjalny model elementu skończonego w płaskim stanie naprężenia, który opisuje typowe właściwości tkaniny technicznej. Zaproponowano rozszerzony wariant modelu sieci gęstej, tzw. Warstwowy model sieci gęstej, w celu bezpośredniego uwzględnienia wpływu pokrycia.
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On constitutive modeling for technical woven fabric
PublicationW pracy przestawiono kilka modeli konstytutywnych przyjmowanych do opisu zachowania się tkanin technicznych. Oprócz modeli zaczerpniętych z literatury autorzy prezentują własną koncepcje modelu stanowiąca rozszerzenie modelu sieci gęstej.This paper describes several types of the constitutive models used for the technical woven fabric description. Besides of the literatures examples of the constitutive models, the authors presented...
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A COMPARISON OF WEAR PROPERTIES OF WATER LUBRICATED NBR AND PTFE SLIDING BEARINGS
PublicationThe excessive wear of a journal shaft can be caused by many factors, for example, working conditions (e.g., temperaturę, slip speed, the type of lubricant), pressure, the type of material used on the bearings and shafts and their roughness, as well as contamination remaining in the system. This paper presents the roughness profiles co-operating with a rubber (NBR) and polytetrafluoroethylene (PTFE) bushes. The conditions of cooperation...
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Are women importanf for economic development? Women`s participation in the labor market and their contribution to economic growth in 83 countries.
PublicationArtykuł przedstawia ilościowe zależności między partycypacją kobiet w rynku pracy a wzrostem i rozwojem gospodarczym. Analiza została przeprowadzona dla 83 krajów świata w latach 1990-2011.
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Wood Moisture-Content Measurement Accuracy of Impregnated and Nonimpregnated Wood
PublicationThe influence of the impregnation process of pine wood (Pinus sylvestris L.) samples on the electrical resistance changes and the moisture-content measurement accuracy is presented in this paper. In this study, the resistances of impregnated and nonimpregnated green pine timber harvested from northern Poland were compared. An impregnation method based on a vacuum-pressure chamber was used. Copper salts were applied as the impregnated...
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A novel approach in wood waste utilization for manufacturing of catalyst-free polyurethane-wood composites (PU-WC)
PublicationIn recent decades, due to the increase in environmental awareness and noticeable environmental degradation, the area of wood waste management has attracted increasing attention. The purpose of this study is to develop a new type of highly filled polyurethane wood-composite (PU-WC) by the utilization of large amount of wood wastes without addition of a catalyst. Although wood-plastic composites (WPCs) are widely known, there is...
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Genetic Predisposition for Osteoporosis and Fractures in Postmenopausal Women
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Heightened acute circulatory responses to smoking in women
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Injury characteristics in women in relation to their menopausal status
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Symmetrical women have higher potential fertility
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Diagnosis of preeclampsia in women with diabetic kidney disease
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Działy ustawy prawo wodne – ochrona wód
PublicationKontynuacja tematyki nowego prawa wodnego. Zagadnienia ochrony wód. Definicje sposobu korzystania z wód publicznych, nowe ograniczenia. Szczególne problemy związane z wodami wykorzystywanymi do celów kąpieli . Zaostrzenia wymagań w stosunku do odprowadzania ścieków. Zasady ochrony wód. Rolnicze wykorzystanie ścieków. Krajowy program oczyszczania ścieków. Ochrona przed zanieczyszczeniami ze źródeł rolniczych. Ochrona zbiorników...
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Static puncture resistance of non-woven geotextiles
PublicationBadania cech fizycznych i wytrzymałościowych geowóknin separcyjnych i osłonowych. Analiza wyników badań oporu na przebicie statycze metodą CBR, dla różnych rodzajów geowłóknin, próbek pozyskanych z terenu (po wbudowaniu w nasyp)i kontrolnych.
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Myths and facts about women aged 50+
PublicationThis study attempts to confront the three stereotypes attributed to women aged 50+ in Poland: the one related to women being interested in retiring as early as possible, the other related to the lack of educational activity and reluctance to acquire new knowledge and skills, and the third related to the image of a grandmother focused on looking after her grandchildren. The author’s aim is to present rational arguments in favour...
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CSR in Polish SMEs from the Women Perspective
PublicationThis paper presents the implementation of the CSR approach among Polish small and medium enterprises, taking into account gender issues. It offers also a kind of evaluation of the national context of women entrepreneurship combined with a wider and deeper analysis of the CSR solutions that may be adressed to both, women, workers and women entrepreneurs.
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Self-employment of women: an opportunity or the last resort?
PublicationIt is believed that automatization and technological changes will be the main drivers of work in the future. At the same time, there is a growing discussion about new forms of employment, such as self-employment. It may be either perceived as a chance for empowerment, through creating new job opportunities, that were not reachable previously, or as precarious work, with less stability, higher risk, and uncertain income. The main...
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Potrzeby wodne gospodarstwa wodnego. Spadek konsumpcji.
PublicationOmówiono zjawisko spadku wielkości zużycia wody w domu. Problem wiarygodności prognozy. Ocena dalszego rozwoju zjawiska.
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Identification of Shift in Sowing and Harvesting Dates of Rice Crop (L. Oryza sativa) through Remote Sensing Techniques: A Case Study of Larkana District
PublicationThe present study aimed to determine the impact of climate variability on rice crops in terms of sowing and harvesting dates and crop period. The identification of sowing and harvesting dates were spotted by mask identification, variations in land surface temperature (LST) on a temporal scale in the respective months, and a field-level social inquiry. The study was conducted during a time period (1994–2017), in which geo-referenced...
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Polyurethane-wood composites (PU-WC) as a method of wood waste management
PublicationIn recent years, due to the progressive environmental degradation and increase of environmental awareness, the sustainability of production systems in wood processing, the wood industry, and wood waste management is a crucial issue for European industry and society. Consequently, the problem of generating wood-like waste and the associated risks has become an increasingly noticeable challenge for science. Although various methods...
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Increasing the frost resistance of ‘Golden Delicious’, ‘Gala’ and ‘Šampion’ apple cultivars
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MEDIUM-TERM WAVE AND CURRENT MODELLING FOR A MESOTIDAL WADDEN SEA COAST
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Impact of high temperature drying process on beech wood containing tension wood
PublicationThe technology of high temperature drying has a great inuence on dimensional and selected physical changes in tension wood. Article is focused on the measurement properties such as moisture content, color changes and longitudinal warping. The quality of beech wood is determined based on structure and properties of wood, frequency of defects in wood material. The tension wood is considered as an important wood defect causing negative...
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Transport undertaking as means of activation of women in rural areas
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Oxidative stress as a hidden cost of attractiveness in postmenopausal women
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Gender and support Polish women at the beginning of their professional career in IT
PublicationThe development of ICT should be understood not only as an increase in the number of users skilled in the use of new technologies, but also as an ever-increasing demand for qualified professionals capable of creating, administering, supporting, and servicing ICT systems. With regard to the continuous development of innovative technologies, there is a noticeably low share of women who actively create and co-create this sector,...
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Adenylate Kinase 4—A Key Regulator of Proliferation and Metabolic Shift in Human Pulmonary Arterial Smooth Muscle Cells via Akt and HIF-1α Signaling Pathways
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Productivity of wood cutting process
PublicationW artykule przedstawiono analizę przykładowej linii przecinania drewna. Produktywność linii oceniono na podstawie stopnia wykorzystania przecinarki i faktycznej prędkości przecinania.
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Smoothing of wood surface by burnishing
PublicationW artykule zaprezentowano rozwój bezwiórowych metod obróbki wykańczającej drewna. Przedstawiono wpływ nagniatania ślizgowego na chropowatość powierzchni drewna. Badania przeprowadzono na próbkach wykonanych z drzewa sosnowego toczonych i nagniatanych ślizgowo. Nagniatanie ślizgowe przeprowadzono z wykorzystaniem nagniataka elastycznego o elemencie ślizgowym wykonanym z Karbonado. Wyniki odniesiono do głównych parametrów nagniatania...
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Trait anxiety moderates the association between estradiol and dominance in women
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Habitual physical activity and estradiol levels in women of reproductive age
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Psychological adjustment of women after oncological surgery and at the end of treatment
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Bisphenol A analogues and metabolic syndrome in women with polycystic ovary syndrome
PublicationBisphenols (BPs) have become a chemical group of special interest due to their ability to interfere with the endocrine system and their ubiquitous presence in the environment. As some of them possess mild estrogenic and anti-androgenic effects, they might be associated with the diagnosis of polycystic ovary syndrome (PCOS). Acting on multiple tissues, BPs exposure may lead to metabolic derangements characteristic for metabolic...
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Działy ustawy prawo wodne – ochrona wód. Część II.
PublicationNowe prawo wodne. Prezentacja ustawy. Działy ustawy prawo wodne – ochrona wód.
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Stosunki wodne w obumierającym lesie świerkowym w Karkonoszach
PublicationObumieranie lasów w Karkonoszach związane jest z drastycznym obniżeniem pH w glebach w wyniku kwaśnych deszczów. Sadzonki świerkowe przeżywają tylko wtedy, kiedy trafiają na lokalne lepiej odwodnione wyniesienia terenowe. W wyniku obliczeń komputerowych programem SPAC uzyskano wskaźnik transpiracji na poziomie 2,9 mm/dobę, jednakże przy uszkodzonej strefie korzeniowej transpiracja spadała do poziomu 1,1 mm/dobę, blokując fotosyntezę...
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Some theoretical models of technical woven fabric and their use in FEM.
PublicationCelem pracy było przedstawienie niektórych typów równań konstytutywnych opisujących zachowanie powłok membranowych używanych do konstrukcji przekryć wiszących. Ocena zastosowanego modelu izotropowego i sieci gęstej w analizie tkanin technicznych. Dokonano porównania wyników uzyskanych własnymi algorytmami metody elementów skończonych z powszechnie dostępnym na rynku programem komercyjnym MARC firmy MSC. Uzyskano dobrą zgodność...