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COVID-19 pandemic fear, life satisfaction and mental health at the initial stage of the pandemic in the largest cities in Poland
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A New Approach to the PWM Modulation for the Multiphase Matrix Converters Supplying Loads with Open-End Winding.
PublicationThis article presents three variants of the Pulse Width Modulation (PWM) for the Double Square Multiphase type Conventional Matrix Converters (DSM-CMC) supplying loads with the open-end winding. The first variant of PWM offers the ability to obtain zero value of the common-mode voltage at the load's terminals and applies only six switches within the modulation period. The second proposal archives for less Total Harmonic Distortion...
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UV/VIS light-enhanced photocatalysis for water treatment and protection
PublicationPraca zawiera wyniki badań nad zaawansowanymi metodami fotokatalitycznymi w aspekcie degradacji zanieczyszczeń w fazie ciekłej. Fenol i chlorowane pestycydy zostały zastosowane jako związki modelowe. Równocześnie prowadzono badania dotyczące ścieków pestycydowych. Rozważane układy: UV/TiO2 w zawiesinie lub osadzony na szklanych mikrosferach oraz UV/H2O2/powietrze. Poprzez modyfikację tlenku tytanu(IV) pierwiastkami niemetalicznymi...
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Transformational Leadership and Acceptance of Mistakes as a Source of Learning: Poland-USA Cross-Country Study
PublicationThis study explores the influence of transformational leadership on internal innovativeness mediated by mistakes acceptance, including country and industry as factors to be considered and gender and risk-taking attitude as moderators. General findings, primarily based on the US samples (healthcare, construction, and IT industry), confirmed that transformational leadership and internal innovativeness are mediated by mistakes acceptance...
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Javed Ather Siddiqui DR.
PeopleI AM PSYCHATRIST,WANTS TO BRING SMILE ON THE FACES OF MENTALLY ILL PATIENTS. I LOVE MY PROFESSION AND WANT TO FACE CHALLENGES FOR SAKE OF THE PATIENTS. I EARNED POST GRADUATE DEGREE FROM MUMBAI UNIVERSITY AT G S SRTH MEDICAL COLLEGE AND KEM HOSPITAL, MUMBAI, INDIA. I HAVE OVER 20 YEARS OF MENTAL HEALTH EXPERIENCE. I HAVE WORKED IN VARIETY OF CLINICAL SETTINGS THAT HAVE INCLUDED DRUG DEADDICTION, CHILD, ADOLESCENT, GERIATRIC AND...
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Wpływ parametrów geometrycznych próbki stalowej na uzyskaną wartość wskaźnika krytycznego rozwarcia wierzchołka szczeliny CTOD w badaniach odporności na pękanie
PublicationW pracy podjęto problem określania ciągliwości materiału metodami mechaniki pękania, jako jednego z częściej wymaganych kryteriów dla konstrukcji okrętowych i oceanotechnicznych. Na podstawie rozważań i modeli numerycznych, studiowano problem wpływu parametrów geometrycznych próbki na wynik znormalizowanej próby określania krytycznego rozwarcia wierzchołka szczeliny - CTOD. W pierwszej części pracy dokonano przeglądu metod...
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End-of-life management of single-use baby diapers: Analysis of technical, health and environment aspects
PublicationSingle-use baby diapers belongs to an important group of products used in the parenting journey because of their high performance and convenience. Single-use baby diapers are normally thrown away after one-time use, resulting in a waste management problem. The goal of this paper was to better understand main environmental concerns of different types of diapers and address how to reduce them, with a special consideration of waste...
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Impacts on human health in the Arctic owing to climate-induced changes in contaminant cycling – The EU ArcRisk project policy outcome
PublicationResults of the EU ArcRisk project on human health impacts in the Arctic owing to climate-induced changes in contaminant cycling are summarized in the context of their policy application. The question on how will climate change affect the transport of selected persistent organic pollutants (POPs) and mercury, both to and within the Arctic has been addressed, as well as the issue of human health impacts of these pollutants in the...
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Design of a Distributed System using Mobile Devices and Workflow Management for Measurement and Control of a Smart Home and Health
PublicationThe paper presents design of a distributed system for measurements and control of a smart home including temper- atures, light, fire danger, health problems of inhabitants such as increased body temperature, a person falling etc. This is done by integration of mobile devices and standards, distributed service based middleware BeesyCluster and a workflow management system. Mobile devices are used to measure the parameters and are...
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Rodzaje wartości i metody ich pomiaru, w: Wartość przedsiębiorstwa i metody jej wyznaczania
PublicationW pracy przedstawiono rodzaje wartości przedsiębiorstwa oraz dokonano ich interpretacji .
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Utilization of rapeseed pellet from fatty acid methyl esters production as an energy source
PublicationRapeseed pellet – crushed seed residue from oil extraction is a by-product of fatty acid methyl esters production process. As other types of biomass, it can either be burned directly in furnaces or processed to increase its energetic value. Biomass is renewable, abundant and has domestic usage; the sources of biomass can help the world reduce its dependence on petroleum products, fossil coal and natural gas. Energetically effective...
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MPPT and GMPPT Implementation for Buck-Boost Mode Control of quasi-Z-Source Inverter
PublicationThe focus is on the maximum power point tracking implementation for the buck-boost voltage mode control of a single-phase multilevel inverter based on a three-level neutral point clamped quasi-Z-source topology. To utilize shoot-through states only when boost function is needed and avoid it in the buck mode, two different control approaches are required. This work proposes merged control system which provides switching between...
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Coastal cliff erosion as a source of toxic, essential and nonessential metals in the marine environment
PublicationDue to the rising environmental awareness, emissions and releases of pollutants, including metals, have been considerably reduced in the last decades. Therefore, the remobiliza-tion of natural and anthropogenic contaminants is gaining importance in their biogeochemical cycle. In the marine coastal zone, this process occurs during the erosion of a shore, especially the most vulnerable cliffs. The research was conducted in the...
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Why do Open Government Data initiatives fail in developing countries? A root cause analysis of the most prevalent barriers and problems
PublicationOpen government data (OGD) include the provision of government data, which have so far been reserved for the provision of public utilities and services, wherein different stakeholders may create value out of the same source. Recently, OGD initiatives around the world have dampened or were found to be inadequate for one or other reasons. The present study seeks to underline the root causes behind these inadequate or stalled initiatives...
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Art. 10 Aktu o rynkach cyfrowych. Zwolnienie ze względów zdrowia publicznego i bezpieczeństwa publicznego
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The Impact of the COVID-19 Pandemic on Poles’ Nutritional and Health Behaviour and Quality of Life—A Pilot Study
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Human Health Risk Assessment on the Consumption of Apples Growing in Urbanized Areas: Case of Kharkiv, Ukraine
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Class of 2020 in Poland: Students’ Mental Health during the COVID-19 Outbreak in an Academic Setting
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Adam Macierzanka dr hab. inż.
People2015-presentHead of Department, Associate ProfessorDepartment of Colloid and Lipid Science, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland 2019-2020Visiting Professor, Food Science and NutritionRiddet Institute, Massey University, Palmerston North, New Zealand 2014-2015Research LeaderColloid Science, Food & Health Research ProgrammeInstitute of Food Research, Norwich, United Kingdom 2012-2014Full Professor,...
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Environmental Tobacco Smoke: Exposure, Health Effects, and Analysis
PublicationTobacco smoke contains more than 4,000 chemicals, and 44 compoundshave been classified as human carcinogens. Toxicity can beboth mainstream smoke as well as the constituents of environmentaltobacco smoke. In the light of this evidence, work is intensifyingon assessing exposure on the basis of the results of tests performedto quantify the amounts of suitable environmental tobacco smokeconstituent biomarkers in samples of biological...
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Editorial: Pharmacology of Plant Polyphenols in Human Health and Diseases
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Towards homoscedastic nonlinear cointegration for structural health monitoring
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Comparative Analysis of the Health Care Institutions’ Competitiveness Level
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Elastic wave propagation software in structural health monitoring
PublicationW pracy omówiono program do analizy propagacji fal spręzytsych w lementach konstrukcji z uszkodzeniami, oraz omówiono mozliwości jego wykorzystania do monitorowania stanu konstrukcji.
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Characteristics of sweeteners used in foods and their effects on human health
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Health-affirming landscapes and sustainable architecture of modern schools
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Justification tool for health-affirming urban places design
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Influence of steam cooking on pro-health properties of Small and Large variety of Momordica charantia
PublicationSteam cooking is one of the most common preparations of Momordicacharantia dishes. This method improved the tastiness of the fruits but at the same time, some changes occurred in the volatile and non-volatile parts of their food matrices. In this study, for the first time these properties were correlated with the found substances affecting the bioactivity of this fruit. Two varieties of Momordicacharantia were analysed and compared....
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Ways of performing judo throws, and their efficiency, assessed in the open weight category in All-Japan Judo Championships
PublicationThere is no indication that earlier individual attempts in this area have been carried out in Japan. Judo masters including Kano, Koizumi, Kudo, Mifune, Tomiki and others have tried to introduce additional criteria to the classification. The need for so many modifications is a result of the many sport and referee rule changes, as well as to ensure the safety of competitors and to increase the attractiveness of judo contests. Purpose...
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Zastosowanie metody podziału i ograniczeń w wielokryterialnym problemie podziału hw/sw do implementacji algorytmów kryptograficznych
PublicationW niniejszej pracy przedstawiono zastosowanie metody podziału i ograniczeń B&B (ang. Branch and Bound) do problemu podziału funkcjonalności między sprzęt i oprogramowanie. Metoda B&B daje rozwiązanie optymalne, ma jednak wykładniczą złożoność obliczeniową. Przyspieszenie uzyskiwane jest na drodze eliminacji nierokujących gałęzi w przestrzeni poszukiwań, a jej kluczowym elementem jest definicja funkcji ograniczenia dolnego. W niniejszej...
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A subdomain model for armature reaction field and open‐circuit field prediction in consequent pole permanent magnet machines
PublicationIn this paper, the machine quantity, such as electromagnetic torque, self and mutual inductances, and electromotive force, is analytically calculated for non-overlapping winding consequent pole slotted machine for open-circuit field and armature reaction. The sub-domain approach of (2-D) analytical model is developed using Maxwell's equations and divide the problem into slots, slot-openings, airgap and magnets region, the magnet...
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Dni Otwarte Politechniki Gdańskiej
EventsDni Otwarte Politechniki Gdańskiej – dwudniowe wydarzenie, stacjonarnie na kampusie oraz online na wirtualnej PG.