Temat: potential - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Macroion adsorption− electrokinetic and optical methods
Autorzy:: Michna, Aneta
Cytata wydawnicza:: Michna A. Macroion adsorption-electrokinetic and optical methods. Adv Colloid Interface Sci. 2017 Dec;250:95-131. doi: 10.1016/j.cis.2017.09.004.
Opis:: Recent studies on macroion adsorption at solid/ liquid interfaces evaluated by electrokinetic and optical methods are reviewed. In the first section the description of the electrokinetic phenomena at solid surface is briefly outlined. Various methods for determining both the static and the dynamic properties of electrical double layer, such as: the appropriate location of the slip plane, were presented. The theoretical approaches are discussed concerning quantitative interpretation of the streaming potential/ current measurements of homogeneous macroscopic interfaces, both bare and formed by microsphere adsorption. Experimental results are presented, involving the electrokinetic characteristics of bare surfaces, such as mica, silicon, glass etc. obtained from various types of electrokinetic cells. The effect of surface conductivity on the zeta potential was underlined. In the next section, various theoretical approaches, proposed to determine the distribution of electrostatic potential and flow distribution within macroion layers, were disscused. Accordingly, the influence of the uniform as well as non−uniform distribution of charges within macroion layer, the dissociation degree, and the surface conductance on electrokinetic parameters were discussed. The last section was devoted to the discussion of experimental data obtained by the streaming potential/ current measurements and optical methods, such as reflectometry, ellipsometry, surface plasmon resonance (SPR), colloid enhancement, and fluorescence technique, for mono− and multilayers of macroions. Results of polcations (PEI, PAMAM dendrimers, PAH, PDADMAC) and polyanions (PAA, PSS) adsorption on mica, silicon, gold, and PTFE are quantitatively interpreted in terms of theoretical approaches postulating the three dimensional charge distribution or random sequential adsorption model (RSA). Macroion bilayer formation, experimentally examined by streaming current measurements, and theoretically interpreted in terms of the comprehensive formalism was also reviewed. The utility of the electrokinetic measurements, combined with optical methods, for a precise, in situ characteristics of macroion mono− and multilayer formation at soid/ liquid interfaces is pointed out.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Tytuł:: Scientific and research activities in the field of nanotechnology in Poland
Autorzy:: Krawczyk-Dembicka, Elżbieta
Ejdys, Joanna
Wydawca:: Naukowe Wydawnictwo IVG
Cytata wydawnicza:: Ejdys, J., Krawczyk-Dembicka, E. (2013). Scientific and research activities in the field of nanotechnology in Poland. Ekonomia i Zarządzanie, 5(2), 127-145.
Opis:: Nanotechnology is a relatively new field of science and technology, but evertheless more and more popularized in the modern world, focused on minimization. As a new field, it requires a number of regulations in legal, ethical, social and above all scientific and technical aspects. Therefore, most countries prepare appropriate strategic documents governing the development of research in the field of nanotechnology and indicate directions and methods of funding as well as conducting research. For the purposes of this study, the authors examined the strategic documents indicating the importance of nanoscience and nanotechnology in Poland in the research system, referring to the documents of the European Union. In addition, basing on statistical data of all Polish regions and the number of projects in the nano area, they evaluated the na- tional scientific and research potential in the field of nanotechnology
Joanna Ejdys
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 3.

Tytuł:: Changes in the potential and utilization of hotels in Łódź after 1989
Zmiany w potencjale i wykorzystaniu hoteli łódzkich po 1989 r.
Autorzy:: Matczak, Andrzej
Wydawca:: Polskie Towarzystwo Geograficzne, Oddział Katowicki; Uniwersytet Śląski, Wydział Nauk o Ziemi
Cytata wydawnicza:: Matczak A., 2018, Zmiany w potencjale i wykorzystaniu hoteli łódzkich po 1989 r., [w:] Sitek S. (red.) „Stare i nowe” problemy badawcze w geografii społeczno-ekonomicznej, z. 8, Polskie Towarzystwo Geograficzne Oddział Katowicki, Uniwersytet Śląski Wydział Nauk o Ziemi, Sosnowiec, s. 7–27.
Opis:: By recording changes in the potential and utilization of hotels in Łódź in the period 1990–2014, we attempt to answer the question whether an increase in the number and capacity of hotels results in the corresponding increase in the utilization of the hotels by tourists. The answer relies on a comparison of the dynamics of an increase in resources (these are expressed by the number of bed places) and obtained effects (these are determined by the number of tourists using hotels and overnight stays offered, and by some derivative indicators). The relationships occurring between the dynamics of an increase in resources and the utilization of these resources have been detected on the basis of index indicators and standard systems of inequalities. The results have indicated two periods of the development of hotels in Łódź after 1989. The first period was characterized by an initial stagnation and following increase in both the potential of accommodation and the utilization of bed places. The investments were concentrated on the maintenance of existing resources and on an improvement in the standard of these resources. In the second period, from the half of the first decade of the 21st century, a remarkably accelerated growth in both the resources and their utilization was noticed. The investments towards an increase in the size of resources for hotels were made. Thus, the absolute size of the utilization level of hotels in Łódź was a function of potential growth for the hotels. The occupancy rate of bed places for hotels in Łódź in 1990 amounted to 37.5%, while in 2014 it was only 33.1%. Merely for several years of the analyzed period there was a higher dynamics of the growth of hotel utilization than the increase of bed-places. One could also observe an enhanced dynamics of potential growth for four- and one-star hotels and their utilization, whereas a decreased dynamics was detected for three- and two-star hotels. In consequence, a clear advantage of the highest and lowest categories of hotels occurred for accommodation facilities in Łódź and their utilization.
Na podstawie rejestracji zmian w potencjale i wykorzystaniu hoteli w Łodzi w okresie 1990–2014 podjęto próbę udzielenia odpowiedzi na pytanie: czy wzrost liczby i pojemności hoteli spowodował analogiczny wzrost ich wykorzystania przez turystów? Odpowiedź oparto na porównaniu dynamiki wzrostu zasobów (wyrażonych liczbą miejsc noclegowych) i uzyskanych efektów (określonych liczbą turystów korzystających z hoteli i udzielonych im noclegów oraz wskaźników pochodnych). Występujące relacje pomiędzy dynamiką wzrostu zasobów i dynamiką ich wykorzystania zidentyfikowano na podstawie wskaźników indeksowych i wzorcowych układów nierówności (standard systems of inequalities). Uzyskane wyniki wskazały dwa okresy w rozwoju hoteli w Łodzi po 1989 r. Pierwszy, charakteryzował się początkowo stagnacją a następnie powolnym wzrostem zarówno potencjału noclegowego jak i jego wykorzystaniem. Inwestycje koncentrowały się na utrzymaniu posiadanych zasobów i polepszeniu ich standardu. Natomiast w drugim, od połowy pierwszej dekady XXI w., zanotowano wyraźnie przyspieszony wzrost tak po stronie zasobów jak i ich wykorzystania. W podjętych inwestycjach skupiono się na powiększeniu wielkości zasobów w sektorze hoteli. Stąd też bezwzględna wielkość poziomu wykorzystania hoteli w Łodzi była funkcją wzrostu ich potencjału. Obłożenie łóżek w hotelach Łodzi w 1990 r. wynosiło 37,5% a w 2014 r. tylko 33,1%. Zaledwie w kilku latach analizowanego okresu notowano wyższą dynamikę wzrostu wykorzystania hoteli aniżeli przyrostu miejsc noclegowych. Zaobserwowano też wyższą dynamikę wzrostu potencjału hoteli 4- i 1- gwiazdkowych i ich wykorzystania, natomiast niższą w hotelach 3- i 2-gwiazdkowych. Skutkiem tego jest wyraźna przewaga najwyższej i najniższej kategorii hoteli w Łodzi.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Tytuł:: How will climate change impact biomass increment by Norway spruce stands in Western Beskids?
Autorzy:: Socha, Jarosław
Durło, Grzegorz
Wydawca:: Instytutu Badawczego Leśnictwa, Komitetu Nauk Leśnych PAN
Opis:: The objective of this study is to analyse the relationship between current climatic conditions and the growth of Norway spruce, and to simulate the effect of changes in temperature and precipitation resulting from increased carbon dioxide concentration on the potential site productivity and carbon sequestration by Norway spruce in the Western Beskids, southern Poland. The research material was data from 43 meteorological stations and posts, and data from 387 permanent sample plots from the Norway spruce stands. On the basis of historical climate data using the WGENK model (Kuchar 2005) a series of meteorological data was generated with a time horizon of 100 years. The calculation procedure was based on two scenarios – CO2 concentrations of 130% and 200% by 2050. In the case of scenario assuming the doubling of CO2 concentration in the atmosphere, the growth in mean annual temperature projected under this scenario of about 2.7ºC and the reduction in the rainfall during the growing season by about 70 mm would result in a significant deterioration in conditions for spruce growth up to 1000 m asl. A slightly better prospect for the growth of spruce in the Western Beskids would take place in the GISS_E_WC scenario (Durło 2011), which assumes a 30% increase in CO2 concentrations. As a result of the increase in mean annual air temperature by about 0.7ºC while maintaining the current level of mean annual precipitation and a slight reduction in rainfall during the growing season, a slight deterioration in habitat conditions to a height of about 800 m asl, optimal growth conditions for spruce would occur in the zone between 850 and 1000 m asl. These analyses of spruce site conditions in the Western Beskids may be the basis for decisions concerning the future role of this species in the species composition of stands, depending on their location.
Przemysław Szmit
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 5.

Tytuł:: Using GIS tools to evaluate theoretical potential of solar radiation
Wykorzystanie narzędzi GIS do oceny potencjału teoretycznego promieniowania słonecznego
Autorzy:: Waniek, Katarzyna
Wydawca:: Polskie Towarzystwo Geograficzne
Cytata wydawnicza:: Waniek K., 2017, Wykorzystanie narzędzi GIS do oceny potencjału teoretycznego promieniowania słonecznego, „Czasopismo Geograficzne”, 88(1-2): 57-72.
Opis:: This article is an analysis of the theoretical potential of solar radiation in selected districts of the Silesia region and is calculated using GIS tools and Digital Elevation Models (DEM). Theoretical potential of solar radiation was calculated for the whole year for 12 districts of the Silesia region. There are 4 districts (Cieszyn, Częstochowa Katowice and Sosnowiec) where additional research was conducted for seasons (spring, summer, autumn, winter). The factors determining the theoretical potential of solar radiation were the height of the sun, landform and the transparent atmosphere. The theoretical potential of solar radiation in the Silesian region increases from the northern districts towards the south. Selected districts of the Silesian Province show the characteristics of a Polish climate: the northern parts of the province are a little cooler than the central part, and the South is characterized by higher temperatures and characteristics of a mountain climate.
W tym artykule przedstawiono analizę potencjału teoretycznego promieniowania słonecznego w wybranych powiatach województwa Śląskiego obliczoną przy użyciu narzędzi GIS oraz Numerycznego Modelu Terenu (NMT). Potencjał teoretyczny promieniowania słonecznego został obliczony dla całego roku dla 12 powiatów województwa śląskiego. Dodatkowo dla 4 powiatów (cieszyńskiego, Częstochowa, Katowice oraz Sosnowiec) obliczono potencjał teoretyczny promieniowania słonecznego dla poszczególnych pór roku (wiosna, lato, jesień, zima). Czynnikami determinującymi potencjał teoretyczny promieniowania słonecznego była wysokość Słońca, ukształtowanie terenu i przezroczysta atmosfera. Potencjał teoretyczny promieniowania słonecznego w województwie śląskim zwiększa się od powiatów północnych w stronę południowych. Wybrane powiaty województwa śląskiego ukazują cechy klimatu Polski: północne fragmenty województwa są nieco chłodniejsze od centralnej części, południe zaś charakteryzuje się wyższymi temperaturami oraz cechami klimatu górskiego.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 6.

Tytuł:: Formation of Intellectual Potential in System of Marketing Management of the Enterprises
Autorzy:: Kasian, Sergii
Wydawca:: Aeternitas Publishing House
Opis:: Stanisław Borkowski
The modern highly educated person, the consumer studies throughout all life. Skills, knowledge, competences of people, in particular the staff of the enterprises are important. Formation of marketing potential is very dynamic process therefore it is necessary to estimate this process in a context of behavior of consumers on markets of commodity and services. Creation of marketing potential has to happen on the basis of taking into of modern knowledge. Full, qualitative and transparent information is at the same time important. In marketing management it is necessary to consider communication of functions of management and marketing. Accumulation at necessary level of intellectual potential of the industrial enterprises allows their managers to introduce technological and commodity innovations. It in a consequence will allow to put into practice marketing strategy of leadership in expenses. Marketing innovative activity is possible thanks to accumulation of intellectual potential. Formation of intellectual potential of the enterprises will allow to position at higher level their activity in space of information flows.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Tytuł:: Delving into the Therapeutic Potential of Carica papaya Leaf against Thrombocytopenia
Autorzy:: Lewandowicz, Jacek
Blecharczyk, Andrzej
Tariq, Tayyaba
Munir, Seemal
Liu, Zhi-Wei
Kowalczewski, Przemysław Łukasz
Inam-Ur-Raheem, Muhammad
Abid, Muhammad
Aadil, Rana Muhammad
Rabail, Roshina
Wydawca:: MDPI
Cytata wydawnicza:: Munir S, Liu Z-W, Tariq T, Rabail R, Kowalczewski PŁ, Lewandowicz J, Blecharczyk A, Abid M, Inam-Ur-Raheem M, Aadil RM. Delving into the Therapeutic Potential of Carica papaya Leaf against Thrombocytopenia. Molecules. 2022; 27(9):2760. https://doi.org/10.3390/molecules27092760
Opis:: Thrombocytopenia is a clinical manifestation that refers to the low platelet count, i.e., <150 × 103/μL, of blood, resulting in imbalanced hemostasis, which leads to several fatal complications. The causative factors vary greatly, but, as a consequence, they interfere with platelet production and promote destruction, leading to death. Carica papaya leaf has unique therapeutic and medicinal characteristics against thrombocytopenia, and this is supported by scientific studies. Secondary metabolites and minerals in the leaf, such as carpaine and quercetin, promote platelet production, inhibit platelet destruction, and maintain platelet membrane through gene expression activity and the ceasing of viral proteases, respectively. This review explores the scientific studies that support the role of papaya leaf in the form of juice, extract, or powder against thrombocytopenia through animal modeling and clinical trials. Phytochemical profiles of C. papaya leaf revealed the presence of flavonoids, alkaloids, phenols, cardiac glycosides, tannins, terpenes, and saponins, which impart therapeutic potential to the leaf. The therapeutic benefits of the leaf include immunomodulatory, antiviral, antidiabetic, anticancer, antimalarial, antiangiogenic, antibacterial, and antioxidant activities. Several conducted scientific research studies have proved the efficacy of C. papaya leaf against thrombocytopenia, expanding the implication of natural sources to eradicate numerous ailments.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Tytuł:: Znaczenie, potencjał i ewolucja polskiej rodziny
Meaning, potential and evolution of the Polish family
Autorzy:: Magda-Adamowicz, Marzena
Wydawca:: EDUsfera. Ewa Jurczyk-Romanowska
Cytata wydawnicza:: Magda-Adamowicz, M. (2020). Znaczenie, potencjał i ewolucja polskiej rodziny. Wychowanie w Rodzinie, XXIII((2/2020)), 25–38.
Opis:: Introduction. The evolution of the Polish family takes place under the influence of systemic, political, economic, social, and legislative changes. They undertake many tasks that the family previously performed outside of it. We observe the taking over of the classic functions of the family by specialized institutions (e.g., procreation in artificial laboratory conditions, raising a child in nurseries and kindergartens, caring for the elderly and the disabled in nursing homes, etc.). Many of these issues seriously violate fundamental moral and religious principles. The evolution taking place in the family is visible in every sphere of its life. Changes in the Polish family are slowly taking place, imitating the life of a Western family. Probably a Polish family, set in a specific cultural and historical context, will follow its own path of change. Aim. The aim of the article is to present changes in the functioning of the Polish family. Results and conclusions. The evolution taking place in the family is visible in every sphere of its life. Slowly, changes in the Polish family are taking place, imitating the life of a Western family. Probably a Polish family set in a specific cultural and historical context will follow its own path of change. At the moment, the Polish family is not fully enchanted by “postmodernity”. Rather, it is a combination of late modernity features with those of a traditional Polish family.
Wprowadzenie. Ewolucja polskiej rodziny dokonuje się pod wpływem przemian ustrojowych, politycznych, ekonomicznych, społecznych i ustawodawczych. Sprawiają one, że wiele zadań, jakie wcześniej pełniła rodzina, jest realizowanych poza nią. Obserwujemy przejmowanie klasycznych funkcji rodziny przez wyspecjalizowane instytucje (np. prokreacja w sztucznych warunkach laboratorium, wychowanie dziecka w żłobkach i przedszkolach, opieka nad osobami starszymi i niepełnosprawnymi w domach pomocy społecznej). Wiele z tych kwestii poważnie narusza podstawowe zasady moralne i religijne. Cel. Celem artykułu jest przedstawienie zmian w funkcjonowaniu polskiej rodziny. Wyniki i wnioski. Ewolucja zachodząca w rodzinie widoczna jest w każdej sferze. Powoli zachodzą przemiany polskiej rodziny, które mają charakter imitacyjny, na wzór zachodni. Prawdopodobnie polska rodzina, osadzona w specyficznym kontekście kulturowo-historycznym, podąży swoją drogą przemian. Na tę chwilę nie jest ona w pełni oczarowana „ponowoczesnością”. Raczej okazuje się połączeniem właściwości późnej nowoczesności z cechami tradycyjnej rodziny polskiej.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Tytuł:: Forest plantation productivity – soil interactions within Western Forest-Steppe of Ukraine: effects of pH and cations
Autorzy:: Hayda, Yuriy
Debryniuk, Yuriy
Raspopina, Svitlana
Wydawca:: The Committee on Forestry Sciences and Wood Technology of the Polish Academy of Sciences and the Forest Research Institute in Sekocin Stary
Cytata wydawnicza:: Raspopina, S., Debryniuk, Y., & Hayda, Y. (2020). Forest plantation productivity – soil interactions within Western Forest-Steppe of Ukraine: effects of pH and cations, Folia Forestalia Polonica, 62(4), 233-245. doi: https://doi.org/10.2478/ffp-2020-0023
Opis:: Dark grey podzolized soils on the loess like loams, which are represented in the soil cover within fresh and humidity gradients in the Western Forest Steppe of Ukraine, are characterized by high forest vegetation potential, which ensure the formation of mostly pure and mixed larch and spruce stands with high level of the productivity. Despite the fact that both species are coniferous, their effect on the soil, in particular, on its acid-base indicators (actual and potential forms of acidity, sum of absorbed bases, degree of saturation of bases, content of mobile aluminium), which are important components of soil fertility, are specific. Due to the fact that there is a close interaction between forest plantations and soil properties, changing the participation of species in the stand, it is possible to adjust the actual soil fertility. The soils under both pure and mixed spruce and larch stands are characterized by a high level of potential acidity that reaches the high acidic values in the upper horizons. A similar reaction of soil solution under coniferous forests is caused by acid hydrolysis of aluminosilicates and accumulation of mobile Al in the rhizosphere zone. Simultaneously, the same acidic characteristics, including the presence of movable aluminium, are also found in soils under broadleaved plantations. In general, acid-exchange properties of soils (high potential acidity, unsaturation of bases and availability of movable aluminium) traditionally are considered as unfavourable for vegetation. However, our researches refute it and prove that within certain values, these indicators do not limit the productivity of pure and mixed spruce and larch stands.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 10.

Tytuł:: Note: Aphis vitalbae Ferrari, 1872 (Hemiptera: Aphididae): new finding on ornamental Clematis spp. in Poland
Autorzy:: Osiadacz, Barbara
Hałaj, Roman
Wydawca:: Springer
Cytata wydawnicza:: Hałaj R., Osiadacz B., 2015, Note: Aphis vitalbae Ferrari, 1872 (Hemiptera: Aphididae): new finding on ornamental Clematis spp. in Poland, Phytoparasitica, 43(1): 103-106
Opis:: Aphis vitalbae Ferrari is reported from Poland for the first time on ornamental clematis (Clematis spp.). The distribution of this aphid in Europe and its possible expansion route are presented with a key to identifying the aphids infesting Clematis plants in Europe.
Barbara Osiadacz
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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