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Wyświetlanie 1-15 z 15
Tytuł:
Different Strokes for Different Folks: Azerbaijans Geopolitical Orientation between the EU and Russia
Autorzy:
KC, Ashik
Powiązania:
https://bibliotekanauki.pl/articles/2091946.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Politycznych i Studiów Międzynarodowych
Tematy:
International relations
Foreign policy
Negotiations
Geopolitics
Stosunki międzynarodowe
Polityka zagraniczna
Negocjacje
Geopolityka
Opis:
The events in Crimea and eastern Ukraine that took place due to the competition between Russia and the EU over possibilities for close cooperation have reinforced the perception of Russia as a key stakeholder in geopolitical upheavals in the post-Soviet sphere. It also served as a reminder that any settlement to political and territorial conflicts within the post-Soviet sphere would have to include Russia. While all other countries in the Eastern Partnership have since associated themselves with either the EU or Russia, Azerbaijan chooses to remain outside such formal obligations. The EU and Russia both have particular interests in Azerbaijan. Russia's interests in Baku lie primarily in it not becoming an alternative to Russia's energy market and remaining within its sphere of influence. The EU, in turn, wants closer ties with Baku since it considers it an alternative energy market to the unreliable Russia. Considering these competing interests of two different actors, this paper is an attempt to chart Baku's course of action in managing to pursue the 'multi-vector' approach. It manages to pursue this approach by playing off the diverging interests of the EU and Russia and bargaining between them.(original abstract)
Źródło:
Stosunki Międzynarodowe - International Relations; 2016, 52, 4; 265-276
0209-0961
Pojawia się w:
Stosunki Międzynarodowe - International Relations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of halophytes as a source of organic manure
Autorzy:
Ayyappan, D.
Ravindran, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/11367.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
utilization
halophyte
source
organic manure
compost
farmyard manure
vermicompost
Suaeda maritima
Opis:
Organic farming is a holistic production management system that promotes and enhances environmental quality including biodiversity, bio-geo-chemical cycles and soil floral and faunal activities. One of the energy resources developed during recent years are the application of organic sources such as biogas slurry, blue green algae, compost, green manure farmyard manure, vermicompost and seaweed liquid fertilizer. During decomposition, these organic manures yield many organic compounds and organic acids as well as antibiotic substances as an intermediate product. Mangrove/Halophytes forest has an important ecological and socio economic value to man. In India, Tamil Nadu has a coastline of 950 km. Extensive mangrove wetlands are located in Pichavaram of Cuddalore district and Muthupet of Thanjavur district. It is reported that the nutrient values of halophytes were higher when compared to green manures (glycophytes). The objective of the present study is to highlight the efficacy of halophytic compost which are normally available in coastal areas on growth and yield parameters in pulse varieties. Various combinations of halophytic composts used, Suaeda compost + farmyard manure + phosphate solubilising bacteria treatment showed an increased in biomass and yield, number of root nodules and microbial activities when compared other halophytic compost and control. This study shows the feasibility of using halophytic composts in the coastal area to improve soil fertility and productivity.
Źródło:
International Letters of Natural Sciences; 2014, 12, 2
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of nonylphenol-induced oxidative stress in ovary of cichlid fish, Etroplus maculatus (Bloch, 1795)
Autorzy:
Asifa, K.P.
Chitra, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/11214.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
The present study was designed to evaluate the effects of nonylphenol in the pro-oxidant/ antioxidant system in ovary of the cichlid fish Etroplus maculatus. Fishes were exposed at two sublethal concentrations (one-fifth and one-tenth of LC50) of nonylphenol for 24, 72 and 96 h maintaining control groups. The oxidative stress indices as the activities of antioxidant enzymes, superoxide dismutase, catalase, glutathione reductase along with the levels of hydrogen peroxide generation and lipid peroxidation were monitored in concentration- and time-dependent manner. Activity of superoxide dismutase significantly (P<0.05) increased at both concentrations in timedependent manner. Meanwhile the activities of catalase and glutathione reductase significantly (P<0.05) decreased after 72 and 96 h of nonylphenol treatment. The levels of hydrogen peroxide generation and lipid peroxidation increased in all treatment groups when compared to controls. The present results demonstrated that the induction of oxidative stress in ovary of fish by the generation of lipid peroxidation could be due to the exposure of environmental contaminant, nonylphenol. Therefore, the observed oxidative stress in ovary can be indicated as a mechanism of toxicity in the fish exposed to nonylphenol.
Źródło:
International Letters of Natural Sciences; 2016, 58
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trace inequalities for positive semidefinite matrices
Autorzy:
Choudhury, Projesh Nath
Sivakumar, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/38118377.pdf
Data publikacji:
2017-06-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
positive semidefinite matrix
group inverse
trace inequalities
Opis:
Certain trace inequalities for positive definite matrices are generalized for positive semidefinite matrices using the notion of the group generalized inverse.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2017, 37, 1; 93-104
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel polymorphic mtDNA marker for population studies of the pink shrimp, Farfantepenaeus duorarum (Crustacea, Penaeidae)
Autorzy:
Grabowski, M.
Grater, W.D.
Stuck, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/47488.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
pink shrimp
Atlantic coast
Penaeidae
mtDNA marker
population structure
Farfantepenaeus duorarum
Mexico Gulf
Crustacea
genetic marker
Opis:
The pink shrimp, Farfantepenaeus duorarum, is one of the most important shrimp species commercially harvested along the Gulf and Atlantic coasts of the US. In this study we developed a mitochondrial marker suitable for population studies of the species. A 611–617 bp hypervariable portion of the AT-rich region of the mt genome was amplified and sequenced. The 617 bp long consensus sequence contained 15 polymorphic insertion/deletion sites and 165 polymorphic substitution sites. Kimura 2-parameter distances ranged from 0.00 to 0.06 with a mean of 0.02. Among the 104 sequences, 100 haplotypes were counted if all mutations were included. If transitions were omitted, 34 haplotypes were observed. The results indicate that the hypervariable portion of the AT-rich region may be an effective marker for revealing the genetic structure of the pink shrimp off the southeast US.
Źródło:
Oceanologia; 2004, 46, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlates of snail shell variation along a unidirectional freshwater gradient in Lithasia geniculata (Haldeman, 1840) (Caenogastropoda: Pleuroceridae) from the Duck River, Tennessee, USA
Autorzy:
Minton, R.
Hart, K.C.
Fiorillo, R.
Brown, C.
Powiązania:
https://bibliotekanauki.pl/articles/84595.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Źródło:
Folia Malacologica; 2018, 26, 2
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gender differential in the incidence of diabetes mellitus among the patients in Udi Local Government Area of Enugu state, Nigeria
Autorzy:
Chukwu, B.N.
Ezebuiro, V.O.
Samuel, E.S.
Nwachukwu, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/11829.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
gender
incidence
diabetes mellitus
insulin
hyperglycemia
glucose
patient
human disease
metabolic disease
Udi Local Government Area
Enugu state
Nigeria
Opis:
Diabetes Mellitus is a chronic metabolic disease characterized by hyperglycemia and disturbances of carbohydrate, fat and protein metabolism. It is a major public health problem and disease burden worldwide, and especially in Nigeria. This study determined the gender differential in the incidence of Diabetes mellitus among the patients in Udi L.G.A of Enugu State. Three research questions and one hypothesis were formulated to guide the study. Descriptive survey design was employed. A sample of 343 diabetes mellitus patients were randomly selected and used for the study. Researchers design data documentary profoma was used to collect the data from selected health facilities in respect to the patients’ gender and their fasting sugar level as contained in their folder or hospital record/register. Frequency and percentages was used to answer research question while the null hypothesis was tested using Chi- square at 0.05 level of significance. The finding of the result revealed a high incidence of Diabetes Mellitus in 2012, females recorded a high incidence of DM from 2008-2012 and high percentage of fasting blood sugar level than male. The finding also revealed no difference in the fasting blood sugar based on gender. It is recommended among others that diagnostic investigation on human placental lactose is advocated to reduce or stop its opposition to insulin secretion during pregnancy.
Źródło:
International Letters of Natural Sciences; 2013, 04
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mercury induced oxidative stress of antioxidants in Clitoria ternatea L.
Autorzy:
Priya, M.
Balakrishnan, V.
Kiruthika Lakshmi, A.
Aruna, R.
Ravindran, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/10952.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
biofertilizer
enzyme
mercury
metal stress
oxidative stress
antioxidant
Clitoria ternatea
Opis:
Biofertilizers are the special formulation of specific beneficial microorganisms that promote the growth of plant crops by converting the unavailable form of nutrients into available form. Here, the effect of heavy metal stress on antioxidant enzymes were studied in Clitoria ternatea L. leaves. Clitoria ternatea L. plant was grown for 30 days and the heavy metal mercuric chloride was sprayed after 10 days from the date of planting. Effect of mercuric chloride was observed in treated plants. The selected plant Clitoria ternatea L. was grown under mercuric chloride treatment in a specified concentration 1 μg/10 ml. The control plant maintained without the treatment of mercuric chloride. Antioxidant effect of mercuric chloride was measured under controlled and treated conditions. The selected plant Clitoria ternatea L. was grown under mercuric chloride in treatment. Further it increases H2O2 content and the antioxidant enzyme activities such as superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) were observed in mercuric chloride treated plants when compared with control. Here mercuric chloride was accumulated more in matured leaves. The results are discussed with the literature.
Źródło:
International Letters of Natural Sciences; 2014, 18
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variations in organic matter bound in fluffy layer suspended matter from the Pomeranian Bay (Baltic Sea)
Autorzy:
Pazdro, K.
Staniszewski, A.
Beldowski, J.
Emeis, K.C.
Leipe, T.
Pempkowiak, J.
Powiązania:
https://bibliotekanauki.pl/articles/48410.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
organic matter
Pomeranian Bay
suspended matter
lipid
fluffy layer suspended matter
Baltic Sea
sediment
fatty acid
Opis:
Fluffy layer suspended matter (FLSM) and surface sediment samples from the Pomeranian Bay were examined for fatty acid, lipid and organic matter contents. FLSM is a several-centimetre-thick layer of fairly concentrated particulate matter lying on the sea floor significantly affecting the flux of matter to depositional basins. Analyses of fatty acids were used to establish sources and decomposition rates of labile organic matter along a transect from the shallow, highly dynamic, Odra estuary to the Arkona Basin, a deep, low energy, depositional area. In FLSM and sediments respectively, the ranges of organic matter contents were 4.0–25.0% and 5.1–23.0%, those of lipids 0.1–5.4% and 0.30–1.67%, and those of fatty acids 50–991 μg g−1 dry wt. and 100–546 μg g−1 dry wt. In shallow waters, the contents of these compounds are very variable, mirroring variations in biological activity and hydrological conditions. The high percentage of polyunsaturated fatty acids in shallow areas indicates the presence of fresh, undegraded, labile organic matter of autochthonous origin. Fatty acids, the most labile components, are transported as suspended matter attached to minerals and finally accumulated in the depositional area in the form of condensed organic macromolecules. The intensity of bacterial decomposition of organic matter in this system is reflected in the high percentage of branched fatty acids. The low fatty acid content in the organic matter is attributed to the high rate of decomposition of the labile organic matter. No linear correlation was found between the contents of fatty acids and lipids.
Źródło:
Oceanologia; 2001, 43, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temporal and spatial changes of cadmium in the near-bottom suspended matter of the Pomeranian Bay - Arkona Deep system
Autorzy:
Staniszewski, A.
Pazdro, K.
Beldowski, J.
Leipe, T.
Emeis, K.C.
Pempkowiak, J.
Powiązania:
https://bibliotekanauki.pl/articles/47445.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
marine environment
spatial change
Pomeranian Bay
toxicity
cadmium
solid speciation
near-bottom suspended matter
temporal change
Opis:
Owing to the high toxicity of cadmium (Cd) towards biota and the considerable quantities of this element entering the environment from anthropogenic sources, interest in its biogeochemistry is increasing. This is also true for the marine environment, which serves as a sink for both natural and anthropogenic Cd loads entering the hydrosphere and the atmosphere. The distribution of Cd in the coastal zone of the marine environment is governed primarily by the flux of the so-called fluffy layer suspended matter (FLSM), which spreads across the top of the sea floor as a several-centimetre-thick layer containing highly concentrated suspended matter. Both total contents and solid speciation of Cd was measured in FLSM collected in the Pomeranian Bay – Arkona Deep system (Western Baltic Proper) in the course of the three-year-long study. Seasonal changes in the total Cd content (0.5–1.8 μg g−1 dry matter) were attributed to the contribution of organic suspensions originating from algal blooms. The decreasing content of Cd in FLSM offshore is due to the input of Cd-rich suspended matter from the River Odra (Oder), and the decreasing organic matter content in FLSM with increasing depth. The contribution of labile fractions (adsorbed and bound to iron(III) hydroxides) was found to be from 50 to 75% of the total content. In view of the substantial mobility and bioavailability of the fractions, this is a highly alarming feature.
Źródło:
Oceanologia; 2000, 42, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The contribution of the fine sediment fraction to the Fluffy Layer Suspended Matter (FLSM)
Autorzy:
Pempkowiak, J.
Beldowski, J.
Pazdro, K.
Staniszewski, A.
Leipe, T.
Emeis, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/48591.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
sediment fraction
Pomeranian Bay
Fluffy Layer Suspended Matter
polonium
Baltic Sea
radioisotope
sea floor
lead
Opis:
Fluffy Layer Suspended Matter (FLSM) is a layer of fairly concentrated suspended matter resting on the sea floor. Its passage to the depositional basins in the Pomeranian Bay – Arkona Deep System of the Baltic Sea is estimated to take around six months. In the course of this migration, the properties of FLSM change as a result of ageing and the influx of fresh particles from the water column, and possibly also because of mass exchange with the uppermost sediment layers. Measurements of radioisotopes (210Po, 210Pb, 137Cs) have demonstrated that in shallow water this topmost layer of sediments, from 8 cm to 3 cm in thickness, is subject to mixing. This creates redox profiles favourable to biota and bioturbation. Basing on 210Pb/210Po disequilibria and the 210Po excess, it was estimated that under steady state conditions from 1.5 to 2.2% of fine fraction (FSF) in the mixed layer of sediments is freshly imported from FLSM. This implies replacement of FSF from the sediments and its incorporation into FLSM. On the assumption that the surface density of FLSM is 10 mg cm−2, FSF freshly exported from sediments actually comprises up to 15% of FLSM. Therefore, the properties of FLSM are strongly influenced by the processes taking place in the sediments, although FLSM by definition is independent of sediments.
Źródło:
Oceanologia; 2002, 44, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Raised concentrations of lipid peroxidation products (LPO) in pregnant women with impaired glucose tolerance
Autorzy:
Lewandowski, K.C.
Stojanovic, N.
Press, M.
Tuck, S.
Lewinski, A.
Karbownik-Lewinska, M.
Powiązania:
https://bibliotekanauki.pl/articles/51544.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2014, 21, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Segregation of songs and instrumentals : a precursor to voice/accompaniment separation from songs in noisy scenario
Autorzy:
Mukherjee, Himadri
Obaidullah, Sk Md
Santosh, K.C.
Gonçalves, Teresa
Phadikar, Santanu
Roy, Kaushik
Powiązania:
https://bibliotekanauki.pl/articles/384645.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
background track
vocals
noisy audio
line spectral frequency
framing
Opis:
The music industry has come a long way since its inception. Music producers have also adhered to modern technology to infuse life into their creations. Systems capable of separating sounds based on sources especially vocals from songs have always been a necessity which has gained attention from researchers as well. The challenge of vocal separation elevates even more in the case of the multi‐instrument environment. It is essential for a system to be first able to detect that whether a piece of music contains vocals or not prior to attempting source separation. It is also very much challenging to perform source separation from audio which is contaminated with noise. In this paper, such a system is proposed being tested on a database of more than 99 hours of instrumentals and songs. Experiments were performed with both noise free as well as noisy audio clips. Using line spectral frequency‐based features, we have obtained the highest accuracies of 99.78% and 99.34% (noise free and noisy scenario respectively) from among six different classifiers, viz. BayesNet, Support Vector Machine, Multi Layer Perceptron, LibLinear, Simple Logistic and Decision Table.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 2; 81-90
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Satellite estimates of the long-term trend in phytoplankton size classes in the coastal waters of North-Western Bay of Bengal
Autorzy:
Miranda, J.
Lotliker, A.A.
Baliareingh, S.K.
Jena, A.K.
Samanta, A.
Sahu, K.C.
Kumar, T.S.
Powiązania:
https://bibliotekanauki.pl/articles/2079007.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton
size class
coastal water
long-term variability
satellite data
statistical analysis
Bengal Bay
Opis:
The study presents long-term variability in satellite retrieved phytoplankton size classes (PSC) at two coastal sites, off Gopalpur and Visakhapatnam, in the north-western Bay of Bengal. The abundance-based models by Brewin et al. (2010) (B10) and Sahay et al. (2017) (S17), for retrieval of PSC (micro, nano, and picophytoplankton), from satellite data, were validated. Both the models performed well in the retrieval of nano and microphytoplankton. However, B10 performed poorly in retrieving picophytoplankton. The statistical analysis indicated better performance of the S17 model and hence was applied to Moderate Resolution Imaging Spectroradiometer onboard Aqua satellite (MODISA) data to understand the temporal (at monthly climatology) and spatial variability (from nearshore to offshore). The spatial distribution indicated nearshore dominance of micro and offshore dominance of picophytoplankton. In nearshore waters off Gopalpur, microphytoplankton dominated throughout the year except for months of south-west monsoon (June and July) where the dominance of picophytoplankton was observed. All PSC exhibited similar distribution at an annual scale with a primary peak during pre-monsoon (March and April) and a secondary peak during post-monsoon (September— November). However, microphytoplankton concentration during post-monsoon was higher off Gopalpur in comparison to Visakhapatnam. The higher microphytoplankton concentration during pre-monsoon was attributed to recurrent phytoplankton blooms. Whereas, post-monsoon increment could be attributed to enhanced phytoplankton growth by availing nutrients sourced from monsoonal precipitation induced terrigenous influx. The outcome of the present study recommends the use of the S17 model for satellite retrieval of PSC from the north-western Bay of Bengal.
Źródło:
Oceanologia; 2021, 63, 1; 40-50
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-15 z 15

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