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Tytuł:
Application of a Logistic Function to Describe the Growth of Fodder Galega
Autorzy:
Rymuza, K.
Bombik, A.
Powiązania:
https://bibliotekanauki.pl/articles/123385.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
oriental goat’s rue
logistic function
growth equation
growth rate equation
growth rate
Opis:
It was attempted in the paper to describe the growth of oriental goat’s rue (Galega orientalis Lam.) growth by means of a logistic function. The studies demonstrated that the function describes empirical data well as the coefficients of determination obtained ranged between 97 to 98%, depending on the growing season. The estimated function parameters indicate that both the plant height and growth rate were conditioned by thermal conditions and moisture during the growing season. Plants had the longest stems in the year 2010 (127.9 cm), and the shortest in 2008 (105.9 cm). The maximum growth rate ranged from 2.12 to 3.97 cm per day in, respectively, 2009 and 2008. Also the inflection point, the point at which plants grew the fastest, depended on the conditions of the growing season.
Źródło:
Journal of Ecological Engineering; 2017, 18, 1; 125-131
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Consequences of human overpopulation and strategies of its prevention
Autorzy:
Ferdynus, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/512750.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Diecezjalne Adalbertinum
Tematy:
human overpopulation
population growth rate
poverty
Opis:
The sense of threat resulting from the potential overpopulation of our globe is not a new phenomenon. As early as in ancient times, philosophers raised concerns over the excessive number of people that could disturb the stability of the state. Looking at the current demographic situation in the world, the author of the paper focuses on potential consequences of human overpopulation as well as various strategies of preventing the negative consequences of this phenomenon. The conducted analyses show that the reduction of poverty is a morally uncontroversial method of overcoming difficulties related to the growing number of inhabitants of our planet.
Źródło:
Studia Ełckie; 2018, 20, 4; 415-
1896-6896
2353-1274
Pojawia się w:
Studia Ełckie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of infestation with Diplostomum spp. on growth rate of Siberian sturgeon fry, Acipenser baeri Brandt
Autorzy:
Kolman, R.
Kolman, H.
Dzika, E.
Powiązania:
https://bibliotekanauki.pl/articles/840167.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Siberian sturgeon
growth rate
Acipenser baeri
Diplostomum
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indebtedness among farmers in Haryana state, India
Zadłużenie wśród rolników w stanie Hariana w Indiach
Autorzy:
Jakhar, B.
Kait, R.
Powiązania:
https://bibliotekanauki.pl/articles/2048609.pdf
Data publikacji:
2021
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
spices
area
production
productivity
compound growth rate
Opis:
Subject and purpose of work: The study aims to evaluate the growth performance of spice crops in Haryana state of India. Materials and methods: The study is based on secondary data obtained over the period of 17 years i.e., from 2001-2002 to 2017-2018. Four spice crop – ginger, turmeric, garlic and fenugreek were selected from rabi and kharif season on the basis of the largest area sown. In order to analyze the data descriptive statistics (mean and C.V.) and CGR (compound growth rate) were employed. Results: The study revealed a significant positive growth rate of 2.20%, 4.50% and 2.20% in the area, production and productivity of ginger in the district of Panchkula, respectively. In the district of Yamunanagar, a growth rate 13.80% and 10.20% was found in the area and production of turmeric. However, a negative productivity growth rate of -3.20% was also revealed. A positive growth rate 1.50%, 3.30% and 0.17% was found in the area, production and productivity of garlic in Karnal district. In the district of Yamunanagar, a growth rate for fenugreek of 7.30% and 7.60% and 13.90% in the area, production and productivity was found. The state of Haryana recorded a significant growth of 1.7%, 2.8% and 1.1% per annum in the area, production and productivity of spice crops respectively. Conclusions: The study revealed a positive growth rate across all the selected spice crops, indicating improving prospects of spice crops in Haryana state.
Źródło:
Economic and Regional Studies; 2021, 14, 3; 346-357
2083-3725
2451-182X
Pojawia się w:
Economic and Regional Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Age and growth rate of Pseudochaenichthys georgianus Norman, 1937 (family Chaenichthyidae) of the South Georgia region
Autorzy:
Chojnacki, Juliusz
Palczewski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2058036.pdf
Data publikacji:
1981
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pseudochaenichthys georgianus
age
growth rate
South Georgia
Źródło:
Polish Polar Research; 1981, 2, 3-4; 145-157
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of potassium diformate in artificial feed against the growth rate of Nilem fish Osteochilus hasselti (Valenciennes, 1842) seed
Autorzy:
Yustiati, Ayi
Chaerani, Amanda Shafira
Rosidah, Rosidah
Rostini, Iis
Powiązania:
https://bibliotekanauki.pl/articles/1068623.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Growth Rate
Nilem Fish
Osteochilus hasselti
Potassium diformate
Opis:
Nilem fish is an endemic fish in West Java that has the potential to be developed into superior aquaculture products. The effect of feed additives on growth can help in increasing the protein synthesis process so that the fish growth process can be optimal. This research was carried out at the Ciparanje Experimental Pond Hatchery at the Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, from October 1 2018 to November 20 2018. The research method was carried out experimentally with Completely Randomized Design (CRD). This study used four treatments which were repeated three times. The treatment in this study consisted of adding potassium diformate to artificial feed at doses of 0%, 0.1%, 0.3%, and 0.5% per 100 grams of feed. The parameters observed in this study were survival, growth rate, feed efficiency, and water quality. The analysis used was the f test and descriptive analysis. The survival rate, growth rate and feed efficiency range from 87.08% -93.75%, 2.22% -2.26% and 41.21%-47.69% respectively. The addition of potassium diformate to artificial feed up to 0.5% per 100 grams of feed can be used as a feed additive in nilem fish cultivation.
Źródło:
World Scientific News; 2019, 132; 244-255
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exchange rate volatility and trade. The case of Ukraine
Autorzy:
Popova, Olga
Jablinski, Jörg
Lukashenko, T.
Powiązania:
https://bibliotekanauki.pl/articles/692551.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
volatility
trade
exchange rate
transitional economies
international transactions
growth rate
Opis:
This article demonstrates the assumptions of economic theory and its followers, the theories which stimulate research on the positive correlation between the success of the economy, its growth and the level of international trade. The empirical analysis of this paper examines the example of the exchange rate volatility and its influence on international trade on the basis of Ukraine. In the descriptive part of this study, which looks at the exchange rate volatility in Ukraine as a whole, the authors have aggregated the bilateral volatilities using trade shares as weights to obtain what is referred to as the “effective volatility” of the country’s exchange rates. It is summarized that the current situation in Ukraine is extremely difficult, and external financial support could alleviate the crisis. The time span used in the work includes the years from 1999 to 2014, with the help of which the authors have demonstrated the fluctuation and correlation between these two factors. From the graph it has been possible to make the conclusion that even if there was no significant visible correlation between trade and the exchange rate volatility, it does not mean that there is no relationship between these two factors, because there are a lot of factors which affect the level of trade.
Źródło:
Research Papers in Economics and Finance; 2016, 1, 1; 17-24
2543-6430
Pojawia się w:
Research Papers in Economics and Finance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of populations of narrow-clawed crayfish Pontastacus leptodactylus in three Belarusian lakes of the Baltic sea catchment area
Charakterystyka populacji raków wąskopłetwych Pontastacus leptodactylus w trzech białoruskich jeziorach zlewni Morza Bałtyckiego
Autorzy:
Alekhnovich, Anatoli
Powiązania:
https://bibliotekanauki.pl/articles/27322961.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Pomorski w Słupsku
Tematy:
narrow-clawed crayfish
population size
survival rate
population growth rate
Opis:
The population characteristics of narrow-clawed crayfish were studied in three Belarusian lakes of the Baltic Sea catchment area. The life history of crayfish is 7 years. The number of larvae I, produced by all females of the population in late spring – early summer is the highest in eutrophic lake Bobrovichskoe – 26.37 ind./m2, the lowest number of larvae I is in mesotrophic lake Ginkovo – 7.09 ind./m2. The number of individuals that survive the transition period from larvae I to the age of one year is 2.80 ± 0.46%, to sexual maturity at the age of 3 years – 0.73 ± 0.15% of crayfish individuals. In the considered populations, the annual survival rate of sexually mature females in the considered populations is 50.7 ± 1.53%. The average generation time is 4.03 ± 0.13 years.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2021, 25; 19-30
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agricultural land use and population growth in Nigeria. The need for synergy for a sustainable agricultural production
Autorzy:
Akpan, Sunday Brownson
Ebong, Victor O.
Powiązania:
https://bibliotekanauki.pl/articles/1878689.pdf
Data publikacji:
2021-10-02
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
Agricultural land
population growth rate
synergy
sustainability
Nigeria
Opis:
The study examined the relationship between agricultural land use and population growth rates from 1961 to 2018 in Nigeria. Secondary data were obtained from Food and Agricultural Organization and the World Bank. Descriptive statistics, trend equation and correlation analyses were used. Findings revealed that agricultural and arable land utilization grew at the rate of 0.62% and 0.72%, respectively per annum; while the total population growth rate stood at 2.57%. Also, urban and rural population grew at a rate of 4.75% and 1.67% respectively. In addition, the agricultural and arable land utilization rates had significant positive correlations with the total population, urban and rural population. Besides, the findings revealed that, agricultural land (to total land ratio) has continued to increase and currently averaged at 68.78% indicating massive land expansion put under agricultural used. Findings revealed that, most arable crop outputs increase majorly from land expansion rather than land productivity, a situation that cannot assure sustainable agricultural land use food security in a near future. Hence, the country needs agricultural land sparing policies and technologies to slow the current agricultural land expansion drive. Besides, the country’s agricultural land policies should focus on achieving land productivity and sustainable land-sharing strategies among major land users in the country. Again, the rural population growth rate is lower than the urban growth rate, implying that, the rural population is deteriorating with its probable negative effect on farm labour. This needs to be addressed urgently if the sustainable agricultural system is to be achieved in the near future in Nigeria.
Źródło:
Journal of Agribusiness and Rural Development; 2021, 61, 3; 261-270
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prawa własności i tempo ich zmian
Property rights and the pace of their changes
Autorzy:
Staniek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/228010.pdf
Data publikacji:
2016
Wydawca:
Wyższa Szkoła Menedżerska w Warszawie
Tematy:
prawo własności
tempo zmian
property rights
growth rate
Opis:
Wiązki praw własności stanowią jedną z podstawowych instytucji formalnych. Ich waga wynika z pełnionych funkcji w gospodarce, zwłaszcza funkcji motywacyjno -bodźcowej. Ekonomiczny charakter praw własności ulega stałym zmianom. Znajduje to wyraz w transferach praw własności zachodzących na rynkach odpowiednio regulowanych przez państwo. Procesy prywatyzacji przebiegają zawsze w konkretnych warunkach gospodarowania, przy odpowiednich proporcjach sektora prywatnego i publicznego. Przy zbyt dużym udziale sektora publicznego istnieje potrzeba transferów praw własności do sektora prywatnego, co dokonuje się w warunkach istnienia rynku prywatyzacyjnego. Rynek ten charakteryzują relacje popytowo-podażowe i kształtowanie cen prywatyzowanego majątku. W praktyce prywatyzacyjnej siły rynkowe ograniczone są działaniami instytucji odpowiedzialnych za prywatyzację (często działających w sposób nieskoordynowany), które kierują się różnego rodzaju interesami. Interes publiczny (interes Skarbu Państwa) rozumiany jako imperium czy dominium wymaga zapewnienia optymalnego tempa zmian praw własności. Tempo to prowadzi do realnych zmian w prywatyzowanych przedsiębiorstwach, do zwiększania ich konkurencyjności i tym samym sprzyjania konkurencyjności całej gospodarki narodowej. W dłuższym czasie wpływa na zwiększenie tempa wzrostu gospodarczego.
Bundles of property rights are one of the basic formal institutions. Their importance results from the function that they play in economy, especially the motivational and incentive function. The economical character of property rights undergoes permanent changes. This is reflected in the transfers of property rights which take place in markets and which are suitably regulated by the State. The processes of privatisation always proceed in specific conditions of management, with appropriate proportions of the private and public sector. With a large share of the public sector there is a need of property rights transfers to the private sector, which takes place in the conditions of the existence of the privatisation market. This market is characerised by supply-demand relations and the price formation of the privatised property. In privatisation practice the market forces are limited by the actions of institutions responsible for privatisation (often acting in an uncoordinated way) which are guided by different types of interests. Public interest (the State Treasury’s interest) understood as empire or dominum requires ensuring an optimal pace of changes of property rights. This pace leads to substantial changes in privatised enterprises, increasing their competetiveness and thereby favouring the competetiveness of the whole national economy. In the long run this influences the growth rate of economic growth.
Źródło:
Postępy Techniki Przetwórstwa Spożywczego; 2016, 1; 156-164
0867-793X
2719-3691
Pojawia się w:
Postępy Techniki Przetwórstwa Spożywczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance test results analysis of crossbred gilts produced in the Bydgoszcz Breeding Region
Analiza wyników testu wydajności loszek mieszańców wyprodukowanych w Bydgoskim Regionie Hodowli
Autorzy:
Michalska, G.
Nowachowicz, J.
Bucek, T.
Wasilewski, P.D.
Kmiecik, M.
Powiązania:
https://bibliotekanauki.pl/articles/961529.pdf
Data publikacji:
2017
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
crossbred gilts
performance test
growth rate
selection index
Opis:
The aim of this study was to analyse the results of performance test of crossbred gilts of Polish Large White and Polish Landrace breed conducted in years 2009–2013 in the Bydgoszcz Breeding Region. They came from two crossing variants (sows breed at first position): [PLW×PL] and [PL×PLW]. Crossbred gilts [PL×PLW] in all analysed years (except for 2001) had higher daily gain of body weight standardised on 180th day than [PLW×PL] animals. From 2009 till 2013 the growth rate of tested crossbred gilts, i.e. [PLW×PL] and [PL×PLW] increased by 10 and 8 g, respectively. Within the span of 5 years (2009–2013) an improvement of breeding value of animals determined as selection index value, which increased by 7 points in [PLW×PL] gilts and by 4 points in [PL×PLW] pigs. This proves the effective improvement of growth and slaughter performance of crossbred gilts coming from the Bydgoszcz Breeding Region within the space of years 2009–2013, being maternal component used in breeding and commercial crossing, which should be monitored in following years.
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2017, 16, 1
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on Pesticides Mixture Degradation by White Rot Fungi
Autorzy:
Gouma, Sofia
Papadaki, Anastasia A.
Markakis, George
Magan, Naresh
Goumas, Dimitris
Powiązania:
https://bibliotekanauki.pl/articles/123993.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
biodegradation
fungi
growth rate
pesticides mixture
soil extract
Opis:
The capacity of five white rot fungi species to degrade linuron, metribuzin and chlorpyrifos when applied both as single pesticides and mixed together in different concentrations on nutritionally poor media was investigated. Our results suggested that Pleurotus ostreatus, Pycnoporus coccineus, Phlebiopsis gigatea and Τrametes versicolor showed a remarkable tolerance to the pesticides, in all media tested. The EC50 values presented a noticeable difference in the mixtures as compared with the individual ones. The minimum growth rate in the mixture was obtained by P. ostreatus whereas P. coccineus appeared to be more efficient than the rest fungal isolates, when cultivated in the soil extract medium. P. coccineus, P. gigantea and T. versicolor produce high levels of polyphenol oxidase, but only T. versicolor was capable of decomposing linuron when combined with metribuzin and chlorpyrifos.
Źródło:
Journal of Ecological Engineering; 2019, 20, 2; 16-26
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Growth Rate of Water Hyacinth (Eichhornia crassipes (Mart.) Solms) in Rawapening Lake, Central Java
Autorzy:
Prasetyo, Syarif
Anggoro, Sutrisno
Soeprobowati, Tri Retnaningsih
Powiązania:
https://bibliotekanauki.pl/articles/1838296.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Rawapening
Eichhornia crassipes
mesocosm
relative growth rate
doubling time
Opis:
Rawapening Lake is one of Indonesia’s national priority lakes that is experiencing environmental problems which are urgently required to be solved due to its functions. The decline in the environmental quality of Rawapening Lake includes sedimentation, water pollution and excess of nutrients, especially Phosphorus (P) and Nitrogen (N) into the lake that induced uncontrolled growth of aquatic plants, one of which is water hyacinth (Eichhornia crassipes (Mart.) Solms). Many activities had been done to reduce the covering of water hyacinth in Rawapening Lake that tends to increase by the time, but no significant result has been achieved. Therefore, this research was conducted in order to study the growth rate of water hyacinth with mesocosm in Rawapening Lake as a baseline to develop suitable management. There were three different sites, namely: Site I in the floating net cage area (FNCA), Rowoboni Village, Site II in the natural area of Bejalen Village which is far from the aquaculture sites, and Site III in the upper reaches of the Tuntang river, Asinan Village. The research was performed in November-December 2019 with the measurements of growth rate, addition number clump and water hyacinth covering every week. The experiment was conducted in the 1 x 1 meter mesocosm, with three replication in every site. In every mesocosm water hyacinth with similar initial weight of 160 grams and number of leaves 6-7 strands were grown in the mesocosm. On day 7 (H7) the average wet weight of water hyacinth increased by 201%. In the fourth week (H28) the average wet weight of water hyacinth increased by 788% compared to the initial weight when planted. The highest relative growth rate (RGR) value of water hyacinth was at site III (7.26%/ day), followed by Site I (7.03%/day), and Site II (6.40%/day), respectively. The doubling time (DT) value of water hyacinth at the site I was 9.9 day, site II – 10.8 day, and site III – 9.6 day. One clump of water hyacinth weighing 160 grams was able to cover 1 m2 of mesocosm within 21 days. On the basis of these results, to manage water hyacinth blooms one has to consider its growth rate.
Źródło:
Journal of Ecological Engineering; 2021, 22, 6; 222-231
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Growth Rate of Water Hyacinth (Eichhornia crassipes (Mart.) Solms) in Rawapening Lake, Central Java
Autorzy:
Prasetyo, Syarif
Anggoro, Sutrisno
Soeprobowati, Tri Retnaningsih
Powiązania:
https://bibliotekanauki.pl/articles/1838362.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Rawapening
Eichhornia crassipes
mesocosm
relative growth rate
doubling time
Opis:
Rawapening Lake is one of Indonesia’s national priority lakes that is experiencing environmental problems which are urgently required to be solved due to its functions. The decline in the environmental quality of Rawapening Lake includes sedimentation, water pollution and excess of nutrients, especially Phosphorus (P) and Nitrogen (N) into the lake that induced uncontrolled growth of aquatic plants, one of which is water hyacinth (Eichhornia crassipes (Mart.) Solms). Many activities had been done to reduce the covering of water hyacinth in Rawapening Lake that tends to increase by the time, but no significant result has been achieved. Therefore, this research was conducted in order to study the growth rate of water hyacinth with mesocosm in Rawapening Lake as a baseline to develop suitable management. There were three different sites, namely: Site I in the floating net cage area (FNCA), Rowoboni Village, Site II in the natural area of Bejalen Village which is far from the aquaculture sites, and Site III in the upper reaches of the Tuntang river, Asinan Village. The research was performed in November-December 2019 with the measurements of growth rate, addition number clump and water hyacinth covering every week. The experiment was conducted in the 1 x 1 meter mesocosm, with three replication in every site. In every mesocosm water hyacinth with similar initial weight of 160 grams and number of leaves 6-7 strands were grown in the mesocosm. On day 7 (H7) the average wet weight of water hyacinth increased by 201%. In the fourth week (H28) the average wet weight of water hyacinth increased by 788% compared to the initial weight when planted. The highest relative growth rate (RGR) value of water hyacinth was at site III (7.26%/ day), followed by Site I (7.03%/day), and Site II (6.40%/day), respectively. The doubling time (DT) value of water hyacinth at the site I was 9.9 day, site II – 10.8 day, and site III – 9.6 day. One clump of water hyacinth weighing 160 grams was able to cover 1 m2 of mesocosm within 21 days. On the basis of these results, to manage water hyacinth blooms one has to consider its growth rate.
Źródło:
Journal of Ecological Engineering; 2021, 22, 6; 222-231
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Continuous Growth of Bulk Si by Temperature Gradient Zone Melting Method
Autorzy:
Li, Jiayan
Wang, Liang
Hao, Jianjie
Ni, Ping
Tan, Yi
Powiązania:
https://bibliotekanauki.pl/articles/356541.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bulk Si
TGZM
Si-Al alloy
growth rate
impurities
Opis:
Temperature gradient zone melting (TGZM) method was used to obtain bulk Si continuously for the efficient separation and purification of primary Si from the Si-Al alloy in this work. The effects of alloy thickness, temperature gradient and holding time in TGZM purification technology were investigated. Finally, the continuous growth of bulk Si without eutectic inclusions was obtained. The results showed that the growth rate of bulk Si was independent of the liquid zone thickness. When the temperature gradient was changed from 2.48 K/mm to 3.97 K/mm, the growth rate of bulk Si was enhanced from 7.9×10-5 mm/s to 2.47×10-4 mm/s, which was increased by about 3 times. The bulk Si could grow continuously and the growth rate was decreased with the increase of holding time from 1 h to 5 h. Meanwhile, low refining temperature was beneficial to the removal of impurities. With a precipitation temperature of 1460 K and a temperature gradient of 2.48 K/mm, the removal rates of Fe, P and B were 99.8%, 94.0% and 63.6%, respectively.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 1; 271-278
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of Liquid Commercial Probiotics to Improve Survival and Growth of Siamese Catfish Fingerlings (Hypopthalmus pangasionodon (Sauvage, 1878))
Autorzy:
Meidi, Wulan Sutiandari
Lili, Walim
Iskandar, Iskandar
Suryadi, Ibnu Bangkit Bioshina
Powiązania:
https://bibliotekanauki.pl/articles/1076704.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Hypopthalmus pangasionodon
Siamese catfish
feed convertion ratio
growth rate
probiotics
survival rate
Opis:
The purpose of this research is to determine the effect of liquid commercial probiotics usage on improving the survival rate and growth of Siamese catfish fingerlings. This research was conducted on March to May 2018, at Building 4 Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. This study used an experimental method with Completely Randomized Design (CRD), which consisted of four treatments and three replications. The treatments are feed without the addition of probiotics, and feed with additional probiotics at doses of 2, 4, and 6 ml / kg of feed. The parameters observed were survival rate, absolute weight, absolute length, feed conversion ratio, proximate test analysis and water quality. Data on absolute weight, absolute length, feed conversion ratio and survival rate were analyzed using analysis of variance, while nutrition changes of fish feed and water quality were analyzed descriptively. The results showed that the best addition of probiotics for feed, is with probiotic doses of 2 ml / kg of feed, which resulted in a 100% survival rate, an absolute weight value of 1.03% and a feed conversion ratio of 1.13.
Źródło:
World News of Natural Sciences; 2019, 24; 54-63
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impact of IFRS 9 on the Link Between Lending and the Capital Ratio in Publicly Traded Banks in Poland
Autorzy:
Bojar, Paweł
Olszak, Małgorzata Anna
Powiązania:
https://bibliotekanauki.pl/articles/2162651.pdf
Data publikacji:
2022-07-31
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
loans growth rate
capital ratio
expected credit loss
IRFS 9
Opis:
This paper aims to determine the role of the expected credit loss approach as defined in IFRS 9 in the effects of capital ratio on loans growth in publicly traded banks in Poland. To resolve this problem, we apply semi-annual data of individual banks in 2012–2018. Using several estimation techniques, we find that in the period of implementation of the expected credit loss approach, the links between loans growth and the capital ratio were enhanced. In particular, lending growth is more sensitive to levels of the capital ratio. These results are important with respect to the goal of bank financial stability and have implications for the conduct of macroprudential policy.
Źródło:
Journal of Banking and Financial Economics; 2022, 1(17); 60-73
2353-6845
Pojawia się w:
Journal of Banking and Financial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Source-sink relationships and grain weight at different positions within wheat spike.
Autorzy:
Chanda, S.V.
Singh, Y.D.
Powiązania:
https://bibliotekanauki.pl/articles/2198848.pdf
Data publikacji:
2002-12-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
grain growth rate
grain filling duration
source-sink
Triticum aestivum
Opis:
The response in growth and final weight of grains from basal, middle and apical spikelets to increases in assimilate availability was studied by modifying source-sink relationships during the grain growth period in a wheat cultivar Lok-1. The source-sink relationship was altered in 1500 plants by removing spikelets in various positions i.e. either apical, middle or basal spikelets were pinched off on the day of anthesis. The final grain weight, grain growth rate and grain filling period (duration) was significantly affected by increasing the source capacity per grain by trimming i.e. removing some spikelets. The final grain weight was positively significantly correlated with grain growth rate while it was significantly but inversely correlated with grain filling duration. A clear effect of position of grain in spikelet and its (spikelet) position on the spike could be visualized. The results imply that there is a possibility that the availability of photosynthates is limiting and does not fully satisfy grain growth requirements. It is suggested that in this cultivar during post-anthesis period, grain yield is source limited.
Źródło:
Plant Breeding and Seed Science; 2002, 46, 2; 67-73
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DETERMINANTY ZRÓŻNICOWANIA ZMIAN WSKAŹNIKA DŁUGU PUBLICZNEGO W KRAJACH UE 15 W LATACH 2000-2014
Determinants of the diversification of changes in public debt ratios in the EU-15 countries in the years 2000-2014
Autorzy:
Grabia, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/950606.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
public debt
GDP growth rate
inflation rate
interest rate
rating
budget balance
primary balance
Opis:
The aim of the article is to identify the determinants of changes in public debt ratios in the developed countries of the EU (EU-15). The analysis was based on the observations of the average values of analysed variables in particular countries throughout the study period and over two sub-periods: 2001-2007 and 2008-2014. On the basis of the article it can be concluded that the diversification of changes in public debt ratios resulted mainly from varying budget and primary balances (the lower the deficits, the lower the increases in public debt ratios) and, to a smaller extent, also from varying interest rates on bonds (the lower the interest rates, the lower the increases in public debt ratios) as well as varying economic growth rates (the higher the economic growth rates, the lower the rises in public debt ratios).
Źródło:
Financial Sciences. Nauki o Finansach; 2015, 3(24); 25-46
2080-5993
2449-9811
Pojawia się w:
Financial Sciences. Nauki o Finansach
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth dynamics and body size evolution of South American long-necked chelid turtles: A bone histology approach
Autorzy:
Pereyra, M.E.
Bona, P.
Cerda, I.A.
Jannello, J.M.
De La Fuente, M.S.
Desantolo, B.
Powiązania:
https://bibliotekanauki.pl/articles/2082231.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Testudines
Chelidae
growth rate
body size
paleohistology
ontogeny
Paleocene
Argentina
Opis:
Among turtles, cases of “gigantism” occur mostly in pleurodiran Pelomedusoides and cryptodirans, but are infrequent among pleurodiran chelids, which are mostly small-medium sized turtles. Yaminuechelys spp. are extinct South American long-necked chelids (from the Late Cretaceous–early Paleocene of Patagonia, Argentina) with caparaces almost three times larger than their extant sister taxon, Hydromedusa tectifera. Since evolutionary changes in size can be analyzed based on growth dynamics, we studied growth strategies from an osteohistological point of view. We sampled both extinct (Yaminuechelys maior) and extant (H. tectifera) species, in order to test hypotheses related to the mechanisms involved in the macroevolution of size within this clade. For this purpose, thin sections of long bone (humerus and femur) shafts of specimens of different ontogenetic stages for these species were prepared. The osteohistological study reveals a similar growth dynamic in both taxa, with a poorly vascularized cortex dominated by parallel- fibered bone and interrupted by lines of arrested growth (LAGs). The huge body size of Y. maior appears to be a consequence of the prolongation of the growth phase, suggesting that it had a longer lifespan than H. tectifera, allowing to reach greater sizes. In this way, and assuming that there is no displacement at the beginning of development (e.g., a delay in the earliest stages of growth) in H. tectifera, the acquisition of a large size in Yaminuechelys would be explained by hypomorphosis of the former or hypermorphosis of the latter, depending on the reconstruction of the ancestral condition of this clade.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 3; 535-545
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carbon consumption of developing fruit and the fruit bearing capacity of individual RoHo 3615 and Pinova apple trees
Autorzy:
Penzel, M.
Lakso, A.N.
Tsoulias, N.
Zude-Sasse, M.
Powiązania:
https://bibliotekanauki.pl/articles/2082957.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
fruit growth rate
fruit respiration
leaf area
LiDAR
precision horticulture
Opis:
This paper describes an approach to estimate the photosynthetic capacity and derive the optimum fruit number for each individual tree, in order to achieve a defined fruit size, which is named as the fruit bearing capacity of the tree. The estimation of fruit bearing capacity was carried out considering the total leaf area per tree as measured with a 2-D LiDAR laser scanner, LALiDAR, and key carbon-related variables of the trees including leaf gas exchange, fruit growth and respiration, in two commercial apple orchards. The range between minLALiDAR and maxLALiDAR was found to be 2.4 m² on Pinova and 4.3 m² on RoHo 3615 at fully developed canopy. The daily C requirement of the growing fruit and the associated leaf area demand, necessary to meet the average daily fruit C requirements showed seasonal variation, with maximum values in the middle of the growing period. The estimated fruit bearing capacity ranged from 33-95 fruit tree-1 and 45-121 fruit tree-1 on the trees of Pinova and RoHo 3615, respectively. This finding demonstrates sub-optimal crop load at harvest time in both orchards, above or below the fruit bearing capacity for individual trees. In conclusion, the LiDAR measurements of the leaf area combined with a carbon balance model allows for the estimation of fruit bearing capacity for individual trees for precise crop load management.
Źródło:
International Agrophysics; 2020, 34, 4; 409-423
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cultivation Parameters Adjustment for Effective Algal Biomass Production
Określenie optymalnych warunków hodowlanych dla efektywnej produkcji biomasy glonowej
Autorzy:
Karło, A.
Wilk, A.
Ziembińska-Buczyńska, A.
Surmacz-Górska, J.
Powiązania:
https://bibliotekanauki.pl/articles/1818145.pdf
Data publikacji:
2015
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
microalgae
reject water
growth rate
mikroglony
wody osadowe
przyrost biomasy
Opis:
Mikroglony są niewielkimi organizmami wodnymi o bardzo dużym potencjale w zakresie oczyszczania ścieków. Ma to związek z faktem, że są mało wymagające w hodowli, a do wzrostu i rozmnażania mogą z powodzeniem wykorzystywać związki biogenne zawarte w ściekach. Dodatkowo, powstająca biomasa może posłużyć jako substrat energetyczny – może zostać wykorzystana do produkcji biopaliw, takich jak biodiesel, bioetanol czy biobutanol lub jako wsad do komory fermentacji, czyli do produkcji biogazu. Ze względu na rosnące zainteresowanie pozyskiwaniem znacznych ilości biomasy glonów podjęto próbę zoptymalizowania warunków hodowlanych pozwalających na pozyskanie największej ilości surowca przetwórczego. W eksperymencie przeprowadzono w warunkach laboratoryjnych serię analiz w zawiesinie, w których jako medium wzrostowe dla mikroglonów z rodzaju Chlorella wykorzystano wody z odwadniania przefermentowanych osadów ściekowych, pochodzące z Centralnej Oczyszczalni Ścieków w Gliwicach. Wody osadowe charakteryzują się wysokim stężeniem azotu nieorganicznego w postaci jonów amonowych, które z powodzeniem wykorzystywane są przez mikroglony do wzrostu. Dodatkowo ścieki takie, w porównaniu z surowymi ściekami komunalnymi, są relatywnie klarowne, dzięki czemu możliwe jest przenikanie światła w głąb medium hodowlanego. W przeprowadzonym eksperymencie wody osadowe w pierwszym etapie poddane zostały podczyszczaniu w reaktorze typu SBR, a następnie skierowane jako dopływ do reaktora glonowego. Celem badań było określenie wpływu podstawowych czynników środowiskowych na tempo wzrostu glonów, a tym samym na przyrost biomasy. W pierwszym teście analizowano wpływ gęstości optycznej hodowli na szybkość przyrostu biomasy. Zawiesinę glonów jednokomórkowych rozcieńczano medium wzrostowym odpowiednio w stosunku 1:5, 2:5, 3:5 oraz 4:5 w odniesieniu do hodowli kontrolnych. Uzyskane wyniki pozwoliły określić optymalną gęstość zawiesiny mikroglonów w reaktorze (odpowiadającą największym przyrostom biomasy, a tym samym wysokiemu usunięciu związków biogennych). Początkowe stężenie zawiesiny mikroglonów na poziomie 0,045–0,067 g/l odpowiadało największym przyrostom biomasy w próbach (tempo wzrostu odpowiednio 0,348 i 0,361 1/dzień). W drugiej serii testów analizowano dodatkowo wpływ takich czynników jak: stosunek N:P, dodatek węglanów jako źródła dwutlenku węgla oraz dodatkowe oświetlanie promieniowaniem aktywnym fotosyntetycznie (falą świetlną o długości w zakresie absorpcji chlorofilu a oraz b), w odniesieniu do próby kontrolnej, a także do uzyskanej wcześniej optymalnej gęstości zawiesiny mikroglonów. W eksperymencie wykazano również, że wody osadowe, charakteryzujące się wysokim ładunkiem nieorganicznych związków azotu i fosforu, a także obecnością metali ciężkich mogą być z powodzeniem wykorzystywane jako medium wzrostowe dla glonów z rodzaju Chlorella.
Źródło:
Rocznik Ochrona Środowiska; 2015, Tom 17, cz. 1; 275-288
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
U-Th ages and facies properties of Edremit travertines and tufas, Van, Eastern Anatolia : implications for the neotectonics of the region
Autorzy:
Yeşilova, Çetin
Güngör Yeşilova, Pelin
Açlan, Mustafa
Yu, Tsai-Luen
Shen, Chuan-Chou
Powiązania:
https://bibliotekanauki.pl/articles/2059601.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
palaeosol
travertine facieses
Van Fault
tufa
growth rate
Lake Van
Opis:
Travertine formation is one of the most important archives of active tectonics in a region and provides information about climate, water temperature and quantity, and biological activity. The Edremit travertines and tufas extend over nearly160 km2 within the boundaries of the Edremit area to the east of Lake Van (eastern Turkey), and yield important evidence towards understanding the neotectonics of the region. The Edremit travertines and tufas were studied throughout their full stratigraphic extent, the factors controlling the formation of these deposits were examined, and the succession was sampled for U/Th analysis. Travertine formation was found to occur from 542–29.7 ka, with two different tufa formation periods: from 29.7–5.8 ka and 5.8–2.08 ka. Pauses in travertine formation (palaeosols) were identified from 510–470 ka, 289–269 ka and 91–34 ka. Our study showed that climate parameters affected the formation of tufa, while the Edremit travertines developed under the control of tectonism. The Van Fault is directly associated with travertine development and its age was identified as 542 ka or older. Since the Gürpιnar Fault, one of the most important faults in the region, is effective in shaping the southern slope of the travertines and limiting the movement of the Van Fault, its age should be younger than 542.4 ka. The Elmalιk Fault played an active role in the formation of the Edremit tufas and is proposed to be 29.7 ka in age, from stratigraphic relationships in the region.
Źródło:
Geological Quarterly; 2021, 65, 2; 65: 28
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena atrakcyjności inwestycji w spółki dywidendowe notowane na Giełdzie Papierów Wartościowych w Warszawie za okres 2009-2018
Rating of the attractiveness of investment in the dividend companies listed on the Warsaw Stock Exchange in the period 2009-2018
Autorzy:
Jabłoński, Bartłomiej
Powiązania:
https://bibliotekanauki.pl/articles/593476.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Dywidenda
Inwestor
Stopa wzrostu dywidendy
Dividend
Dividend growth rate
Investor
Opis:
Artykuł opisuje problematykę atrakcyjności inwestycji w spółki dywidendowe notowane na Giełdzie Papierów Wartościowych w Warszawie za okres 2009-2018 z punktu widzenia inwestora poszukującego spółek wypłacających dywidendy charakteryzujące się stałym tempem wzrostu. Opisano reakcje inwestorów na nieoczekiwane zmiany w wypłacie dywidend oraz wskaźniki rynkowe uwzględniające dywidendy wypłacane w danym roku, jak również w ujęciu skumulowanym. Celem badań była ocena atrakcyjności inwestycji w dwie grupy spółek dywidendowych – silnych (wypłaty dywidend bez przerwy przez okres 10 lat) oraz słabszych (spółki, które w okresie 2009-2018 tylko raz nie wypłaciły dywidendy), charakteryzujących się stabilnym tempem wzrostu dywidend i średnią roczną stopą zwrotu wyższą od średniej rocznej stopy zwrotu benchmarku, za który przyjęto indeks WIG. Wyniki badań potwierdzają istnienie takich spółek na Giełdzie Papierów Wartościowych w Warszawie.
This article describes the issues of the attractiveness of investment in the dividend companies listed on a stock exchange in Warsaw for the period 2009-2018, from the point of view of an investor seeking companies paying dividends with their pace of growth. It describes the reactions of investors to unexpected changes in the payment of dividends and market indicators, taking into account dividends paid for the year in question, as well as in terms of cumulative. The purpose of the research was an indication of the strong (payment of dividends without interruption for a period of 10 years) and weaker (the company, which in the period 2009-2018 only once did not paid out dividends) dividend companies groups that were characterized by a stable growth rate of dividends and the average annual rate of return higher than the average annual rate of return of benchmark, which adopted the WIG index. The test results confirm the existence of such companies on the stock exchange in Warsaw.
Źródło:
Studia Ekonomiczne; 2018, 374; 38-53
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of zinc foliar application at an early stage of maize growth on patterns of nutrients and dry matter accumulation by the canopy. Part II. Nitrogen uptake and dry matter accumulation patterns
Wplyw dolistnego stosowania cynku we wczesnej fazie wzrostu kukurydzy na wzorce akumulacji skladnikow pokarmowych i suchej masy przez lan. Cz.II. Wzorce pobierania azotu i akumulacji suchej masy
Autorzy:
Grzebisz, W
Wronska, M.
Diatta, J.B.
Szczepaniak, W.
Powiązania:
https://bibliotekanauki.pl/articles/14901.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
nitrogen uptake
growth analysis
nutrient
accumulation
relative plant growth rate
dry matter accumulation
plant cultivation
zinc application
absolute crop growth rate
growth early stage
canopy
dry matter
foliar application
maize
Opis:
A two-year field trial was carried out in order to outline reasons of maize grain yield increase due to foliar application of zinc, and to evaluate its effects on the dynamics of nitrogen and dry matter accumulation in the course of the growing season. Growth analysis methods were applied to describe the trends exhibited by the canopy and plant’s growth. Maize plants fertilized with zinc were able to increase the rate of nitrogen uptake, as indicated by the values of absolute crop uptake rate for N (CUR-N), at two distinct time-separated phases of growth, i.e., (i) from 7th to 9th leaf and (ii) from milk to physiological maturity of kernels growth. Physiological processes occurring in these two time-separated phases resulted in an increase of maize yielding capacity. The effect of zinc as recorded in the first phase resulted in extension rate of new organs or tissues ingrowth, as confirmed by the RGR analysis. At the reproductive phase of maize growth, plants well supplied with zinc accumulated more nitrogen, which was a prerequisite for significantly higher rate of dry matter accumulation, as confirmed both by CGR and RGR analyses. The amount of extra nitrogen taken up by Zn treated plants was sufficiently high to increase grain yield by 1.5 t ha-1, which was achieved in the conducted experiment.
Dwuletnie doświadczenie polowe przeprowadzono w celu wyjaśnienia przyczyn wzrostu plonu ziarna kukurydzy dolistnie traktowanej nawozem cynkowym i oceny jego wpływu na dynamikę procesów akumulacji azotu i suchej masy w okresie wegetacji. Do opisu uzyskanych trendów zastosowano metody analizy wzrostu łanu i rośliny. Kukurydza nawożona cynkiem była w stanie, jak wykazały wartości wskaźnika absolutnej szybkości pobierania azotu przez łan (CUR-N), zwiększyć pobieranie azotu w dwóch czasowo różnych fazach rozwoju, to znaczy (i) od fazy 7. do 9. liścia oraz (ii) od fazy dojrzałości mlecznej do fizjologicznej ziarniaków. Procesy fizjologiczne ujawniające się w tych dwóch czasowo odległych fazach rozwoju kukurydzy determinowały wzrost potencjału produkcyjnego kukurydzy. Działanie cynku w pierwszej fazie przejawiło się wzrostem szybkości akumulacji azotu, który spowodował wydłużenie fazy intensywnego przyrostu nowych tkanek lub/i organów, jak potwierdziła analiza RGR. W fazie reproduktywnej rozwoju kukurydzy rośliny dobrze odżywione cynkiem akumulowały azot z większą szybkością, co było podstawowym warunkiem zwiększonej akumulacji suchej masy, potwierdzonej analizami CGR i RGR. Ilość azotu pobranego ekstra przez rośliny nawożone cynkiem była dostatecznie duża do wzrostu plonu ziarna o 1,5 t ha-1, co uzyskano w przeprowadzonym eksperymencie.
Źródło:
Journal of Elementology; 2008, 13, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 155

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