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Wyświetlanie 1-10 z 130
Tytuł:
Historyczno-polityczne uwarunkowania kryzysów państwowości w Gwinei Bissau
Historical and Political Conditions of the State Crises in Guinea-Bissau
Autorzy:
Mormul, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/522800.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warszawski. Katedra Języków i Kultur Afryki. Polskie Towarzystwo Afrykanistyczne
Tematy:
Guinea-Bissau
statehood crises
history of Guinea-Bissau
politics of Guinea-Bissau
state dysfunctionality
Opis:
The article analyzes the historical-political determinants of statehood crises in Guinea-Bissau. In the post-independence history of this country, there is a tendency to take political power by military coups, and the continual attempts to exert influence by high-ranking commanders of the armed forces on, an anyhow unstable, domestic political scene. Since the introduction of the multi-party system in 1994, none of Guinea-Bissauan presidents has succeeded in reaching the end of his mandate. This phenomenon is recognised as the fundamental and systemic cause of the statehood crises plaguing Guinea-Bissau. By presenting the turning points in its recent history and the international context, especially in the regional dimension, the author seeks to diagnose the causes of the continually unstable and fragile political situation in Guinea-Bissau.
Źródło:
Afryka; 2017, 46; 41-72
1234-0278
Pojawia się w:
Afryka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcje ustroju politycznego w kolonialnej Gwinei Hiszpańskiej i w niepodległej Gwinei Równikowej
The Concepts of Political System in the Colonial Spanish Guinea and Independent Equatorial Guinea
Autorzy:
Kruze, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/522802.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Warszawski. Katedra Języków i Kultur Afryki. Polskie Towarzystwo Afrykanistyczne
Tematy:
Equatorial Guinea
Fernando Po
Rio Muni
Bubi people
Fang people
Francoism
decolonisation
Opis:
The decolonisation process of Equatorial Guinea had a unique character. It proceeded gradually and peacefully, which gave hope that the Guinean political elites were well-prepared to assume power. The article analyses changes in the political status of Spanish sub-Saharan territories and compares the concepts of the Guinean political system presented by African political activists with projects prepared by the government in Madrid. The author draws attention to the political diversity of ethnic and social groups in Equatorial Guinea, the actions undertaken by the African political parties, various standpoints of the Spanish ministries and the international position of Spain.
Źródło:
Afryka; 2018, 47; 51-70
1234-0278
Pojawia się w:
Afryka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of b-value variation of earthquakes in Papua New Guinea
Autorzy:
Abong, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/1068605.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
F-ratio
Papua New Guinea
b-value
earthquakes
least squares
temporal variation
Opis:
This study evaluated the b-value variation of earthquakes in Papua New Guinea region. The data used were extracted from International Seismological Centre (ISC), Pipers Lane, Thatcham, Berkshire, United Kingdom. The selected data consisted of earthquakes with Mb ≥ 2.6 for the study area from 1st January 1966 to 31st December 2015 (50 years) with focal depth from 0 – 700 km. The data were analyzed using Least Squares (LS) approximation method and SPSS Software version 20.0. The findings of this study categorized b-value into three groups: High, moderate and low. High b-value varies from 1.01 to 1.35, moderate b-value lies between 0.8 and 1.0 and low b-value varies from 0.63 to 0.80. This indicates that the years where high b-values occurred predominantly consist of many earthquakes of moderate magnitudes; slight decrease in b-value is associated with many earthquakes of large magnitudes and low b-value is associated with many earthquakes of small magnitudes. The b-value for the whole study area was calculated to be 0.91. The research hypothesis revealed that there is a significant difference in the b-value between the decade groups from 1966 to 2015. The F-ratio between the decade groups was found to be 3.776 with significant value of 0.010. The implication of this study is that temporal variation and monitoring of b-values will serve as one of the reliable ways of earthquake prediction in Papua New Guinea.
Źródło:
World Scientific News; 2019, 132; 155-168
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Devastating Effect of Forest Degradation in Southern Guinea Savanna of Nigeria
Autorzy:
Buochuama, A.
Akande, O. A.
Buochuama, M. O.
Powiązania:
https://bibliotekanauki.pl/articles/1161466.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Nigeria
devastating
ecological
forest degradation
guinea savanna
Opis:
Forest degradation poses serious ecological consequences to the environment. Therefore, this research deals with the devastating effect of forest degradation in southern guineas savannah of Nigeria. In this study, about one hundred and twenty questionnaires (120) were used to collect data from a number of villages in Wawa community. Descriptive statistics was used in the data analysis. Construction, poverty, population increase, and farming were some of the sources of forest degradation in the study area. The consequences of forest degradation in the study area were erosion, desertification, wildlife habitat destruction and global warming/ climate change. The study noted that the solutions for curbing forest degradations include the following; agroforestry, creation of more forest reserves afforestation/ reforestation, implementation of forest laws and policies and public enlightenment on the consequences of forest degradation.
Źródło:
World Scientific News; 2018, 112; 107-117
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanism of inhibition of smooth muscle of guinea-pig taenia coli by chloramphenicol
Autorzy:
Pramanik, P
Datta, S.C.
Mitra, C.
Powiązania:
https://bibliotekanauki.pl/articles/69217.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
muscle
taenia coli
smooth muscle inhibition
guinea pig
chloramphenicol
Źródło:
Journal of Physiology and Pharmacology; 1994, 45, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tissue reaction to the nickel implants in the guinea pigs
Autorzy:
Kręcisz, Beata
Kieć-Świerczyńska, Marta
Piasecka-Zelga, Joanna
Chomiczewska-Skóra, Dorota
Stetkiewicz, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2180087.pdf
Data publikacji:
2012-06-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
nickel implants
contact allergy
Guinea pigs
Opis:
Objectives: The aim of the study was the assessment of local tolerance to nickel implants during 9 months observation in guinea pigs sensitized to nickel before implantation and non-sensitized ones. Materials and Methods: Three groups of guinea pigs were included in the study: 10 sensitized to nickel by the guinea pig maximization test; 10 previously nonsensitized and 10 in control group. In 20 animals (except control group) the nickel implants were inserted in the muscle of the back. After 9 months of observation, the animals were patch-tested with 5% nickel sulfate. Also percentage of eosinophils in peripheral blood was examined. Next, the tissue surrounding the implant and skin from the area of patch tests were collected for the histological examination. Results: In 70% of previously sensitized animals, the patch test confirmed the sensitivity to nickel. In 60% of previously non-sensitized animals, a positive reaction to nickel occurred. The results of patch tests in control group were negative. Percentage of eosinophils in peripheral blood was fourfold higher in animals sensitized to nickel than in control group. In histological examination, in the tissue surrounding the implant a dissimilarity concerning the intensity of cellular infiltration was observed between animals previously allergic and non-allergic to nickel. In the 2 of 10 previously sensitized guinea pigs quite severe inflammatory reactions in the inside of connective tissue capsule were noted which may indicate a local allergic reaction. The histological images of skin collected from the positive patch test site corresponded with the typical allergic contact dermatitis. Conclusions: Nickel implants may cause primary sensitization to nickel. The nature of the histological changes in the tissues around the implants in guinea pigs sensitized to nickel may correspond to an allergic reaction. The examination of percentage of eosinophils in blood of guinea pigs may be useful in assessing the allergenic activity of metal alloys containing nickel.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2012, 25, 3; 251-257
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polski handel zagraniczny perliczkami żywymi i mięsem perliczym w latach 2012-2016
Polish foreign trade with live guinea fowls and the guinea fowl meat in the years 2012-2016
Autorzy:
Pasinska, D.
Powiązania:
https://bibliotekanauki.pl/articles/869453.pdf
Data publikacji:
2018
Wydawca:
The Polish Association of Agricultural and Agribusiness Economists
Źródło:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2018, 20, 4
1508-3535
2450-7296
Pojawia się w:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Soil Based Heavy Metals from Anthropogenic Activities in Kaduna Northern Guinea Savanna of Nigeria
Autorzy:
Sodimu, A. I.
Onwumere, G. B.
Yilwa, V. M.
Powiązania:
https://bibliotekanauki.pl/articles/1075622.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Anthropogenic
Assessment
Heavy Metals
Northern Guinea Savanna
Soil Based
Opis:
Soil based heavy metals resulting from anthropogenic activities in Kaduna Northern Guinea Savanna of Nigeria was assessed. Soil samples were collected at a depth of 15m with a soil auger using 50m × 50m plots laid in each of the four sites (ST1, ST2, ST3 and ST4) replicated three (3) times to make a total of twelve (12) plots. The assessment was done in two (2) seasons (wet season and dry season). Soil based heavy metals were carried out according to AOAC using atomic absorption spectrophotometer. The data collected were analyzed with descriptive statistic as well as Anova using SPSS package. Eleven (11) soil based heavy metals; V, Cr, Mn, Zn, Co, Ni, Cu, Br, Pb, Cd and Fe were revealed in each of the selected sites. There were significant differences (P<0.05) when concentration are compared between seasons within the sites. Higher soil heavy based metals were recorded in the wet season than the dry season in all the sites. The sites behind Kaduna Refinery and Petrochemical Company (KRPC) is significantly higher (P<0.05) in concentration than all other sites while the control (Kamaku National Park) has the least concentration (P<0.05). Pearson correlation showed a significant and positive association between soil based heavy metals and automobile / farming activities in wet season (R = 0.40**) and dry season (R = 0.95**) as well as in industrial / farming activities in wet season (R = 0.88**) and dry season (R = 0.94**) at 0.01 probability level. It is concluded that variation in the assessment of soil based heavy metals in the selected sites are influenced by anthropogenic activities (mainly agriculture and fossil fuel combustion) in the sites. It is recommended that there should be provision for licensing and registration of all major industrial polluters and monitoring their compliance with laid down standard; further research into anthropogenic air pollution and farming activities which leads to increase in soil based heavy metals especially in the Northern Guinea Savanna where there are limited research should be investigated.
Źródło:
World Scientific News; 2019, 125; 83-93
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance of some forage rass species in the Southern Guinea Savannah agro-ecological zone in Nasarawa State of Nigeria
Autorzy:
Okwori, Abel Ibrahim
Abdulsalam, Mansur
Powiązania:
https://bibliotekanauki.pl/articles/1179173.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Forage species
Nasarawa State
Performance
Southern Guinea Savanna
Opis:
The absence of improved forage grass species in Nasarawa ecological zone has prompted a study to identify improved species for use. A potted screen house study was therfore conducted using four improved forage grass species obtained from the National Animal Production Research Institute (NAPRI) Shika near Zaria, Nigeria. The four forage species were thus sown into four soil types obtained from four locations in Nasarawa State arranged in a randomized complete block design. Records were taken for percent emergence, weekly growth rate and dry matter yields. The results indicated that there was significant differences in the percent emergence, weekly growth rate and dry matter yield.
Źródło:
World Scientific News; 2017, 83; 92-118
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metabolism of cyclic GMP in peritoneal macrophages of rat and guinea pig.
Autorzy:
Kobiałka, Marcin
Witwicka, Hanna
Siednienko, Jakub
Gorczyca, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/1043463.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
guinea pig
rat
signal transduction
phosphodiesterases
guanylyl cyclases
protein kinases
cyclic nucleotides
macrophages
Opis:
The aim of our studies was to establish which enzymes constitute the "cGMP pathway" in rat and guinea pig peritoneal macrophages (PM). We found that in guinea pig PM synthesis of the nucleotide was significantly enhanced in response to activators of soluble guanylyl cyclase (sGC) and it was only slightly stimulated by specific activators of particulate guanylyl cyclases (pGC). In contrast, rat PM responded strongly to atrial natriuretic peptide (ANP), the activator of pGC type A. The rat cells synthesized about three-fold more cGMP than an equal number of the guinea pig cells. The activity of phosphodiesterases (PDE) hydrolyzing cGMP was apparently regulated by cGMP itself in PM of both species and again it was higher in the rat cells than in those isolated from guinea pig. However, guinea pig PM revealed an activity of Ca2+/calmodulin-dependent PDE1, which was absent in the rat cells. Using Western blotting analysis we were unable to detect the presence of cGMP-dependent protein kinase 1 (PKG1) in PM isolated from either species. In summary, our findings indicate that particulate GC-A is the main active form of GC in the rat PM, while in guinea pig macrophages the sGC activity dominates. Since the profiles of the PDE activities in rat and guinea pig PM are also different, we conclude that the mechanisms regulating cGMP metabolism in PM are species-specific. Moreover, our results suggest that targets for cGMP other than PKG1 should be present in PM of both species.
Źródło:
Acta Biochimica Polonica; 2003, 50, 3; 837-847
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 130

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