202 research outputs found
Food and feeding habits and allometric relationship of synodontis schall in lower Ogun river, Akomoje, Ogun state, Nigeria
No full textThe diets of Nile perch (Lates niloticus) in Oyan Dam
No full textSamples of Nile perch (Lates niloticus L.) were collected for stomach analysis from artisanal fishermen using fishing gear such as, cast nets, gill nets, set nets, in Oyan dam, Abeokuta, Ogun state, Nigeria. Frequency of Occurrence and Numerical methods was used to analyse the stomach contents of 60 specimens of Lates niloticus collected. The results of analysis of the food items found in the stomach of Late sniloticus obtained from Oyan dam were presented. The percentage of empty stomach was low; out of the 60 specimen examined only 14 had empty stomach. These specimens had a total length varying from 9.0 – 40.0cm with a mean of 19.21 ± 0.95 and a standard length from 7.8- 38.0cm, with a mean of 17.47 ± 0.90. The body weight varied from 23.5 – 550g, with mean of 188.91 ± 2.16. Only 23% of the specimens had empty stomachs. The food items encountered in the stomach covered a wide spectrum and it's shown that it feed on a variety of food items. Fish parts dominate the stomach content followed by Insects and Blue green algae, which indicate that the species is a carnivore. Unidentified detritus also occurred sparingly in the dietsKey Words: Fish, Food items, Lates niloticus, Oyan Lake
RELIGIOUS, PHILOSOPHICAL AND LITERARY CONTEXTS OF F.I. TYUTCHEV’S POEM «TO A.V. PL <ETNYO> VA»
No full textThe article presents an analysis of the poem of F.I. Tyutchev with the attraction of evangelical texts, works of the Russian religious philosophers, and such poets as A.S. Pushkin, VA. Zhukovsky, A.A. Fet, A.A. Maykov and F.I. Tyutchev himself. The stress is laid on the ideological position of the lyrical subject and features of figurative thinking that allow specifying a question of a place of the poet in the literary movement of the 2nd half of the XIXth century. It is proved that the consciousness of Tyutchev who created the poetic addressing includes the religious component participating in creation of images. In this case, the assumption is argued according to which the romantic canon of a creative phenomenon with its idealistic concept kept by Tyutchev as fidelity of tradition is in addition strengthened by the characteristic preferences that show the author’s proximity to “Pure Art”. The author arrives at such conclusions: 1) the poem “To A.V. Pl va” declares commitment to the ideas of the late-romantic school; 2) images of the miniature are created by the triad “outlook - creativity - a human ideal”; 3) the semantic dominant of the message is conviction in the value of belief for an orthodox person, and for an artist - in art, inspired by spiritual beauty; 4) the religious component of attitude of the lyrical subject interacts with a wide literary background and makes opposition to «unromantic» options of a world outlook and everyday philosophy of life
Teaching officials of Volynsky (Kremenetsky) Lyceum: V.G. Besser, A.I. Maevsky, F.I. Mekhovich
No full textАвтор вивчає життєвий шлях чиновників-педагогів Волинського лицею. Ообливість біографій у тому, що вони висвітлюють період життя досліджуваних діячів до 1832 р., коли навчальний заклад припинив своє існування.Автор изучает жизненный путь чиновников-педагогов Волынского лицея. Особенность биографий в том, что они освещают период жизни исследуемых деятелей до 1832 г., когда учебное заведение прекратило свое существование.This article is the first of all author’s series, dedicated to teaching officials of Volynsky Lyceum in the town of Kremenets. The service records dated 1832 found in the State Archive of Kharkovskaya Oblast, have been taken as a basis of the research work where the author studies the life journey of V.G. Besser, A.I. Maevsky, F.I. Mekhovich. What makes these biographies unique is that they feature CVs of aforesaid people before the year 1832. This year marked the dissolvent of Volynsky Liceum
Author Correction: Imaging-based representation and stratification of intra-tumor heterogeneity via tree-edit distance
No full textMartina Sollini and Paola Anna Erba were omitted from the author list in the original version of this Article. The Author Contributions section now reads: “L.C. conceived the pipeline, set up the case study, analysed the results, prepared the figures, and wrote the manuscript. M.P. formulated and tuned the pruned tree edit distance, provided the mathematical proofs and the simulation study, and wrote the manuscript. A.R. contributed to implement the patient representation pipeline. M.S. segmented the Prostate Cancer lesions and extracted the radiomic features for all patients in the case study. P.A.E collected the data and enrolled the patients in the clinical study. F.I. supervised the analyses and the conception of the pipeline. L.C., M.P., A.R. and F.I. reviewed and approved the manuscript.” The original Article and accompanying Supplementary Information file have been corrected.</p
Biology, digestive enzymes and organosomatic indices of Chrysichthys nigrodigitatus (Lacépède, 1803) from Oyan Dam, Southwestern Nigeria
No full textSome aspects of the biology, digestive enzymes and organosomatic indices of Chrysichthys nigrodigitatus purchased from fishermen in Oyan dam was investigated. This study was aimed at providing information on the composition of food materials found in the gut and specific activities of selected enzymes as it affects the domestication of the species. 100 specimens of the species were examined for stomach contents, length-weight relationship, digestive enzyme assay and organosomatic indices, using standard methods. Food items observed were detritus (4%), fish part (12%), Insecta (13%). Sand was observed to be 11% of total stomach volume. The logarithmic equation for length-weight relationship lnW=2.68lnl-3.79 indicated that an increase in length led to a corresponding increase in weight with ‘R’ = 0.611, calculated ‘r’=0.78, ‘a’=2.68 and ‘b’=3.79 indicating positive allometric growth pattern. Amylase exhibited high activity in the stomach, while lipase and proteinase in the stomach and posterior intestine. Specific activities of digestive enzymes showed significant differences (p<0.05). Viscerosomatic (2.92± 0.25), hepatosomatic (2.27± 0.22) indices and Fulton condition factor (1.93± 0.06) were recorded. Feed items present in the species confirm its overlapping feeding habit, indicating that the species is an omnivorous detritivore. This was also depicted in the activities of the different digestive enzymes
Book Review: Nowik, F. I. In the Trap of the Cold War (The Soviet Policy Towards Germany, 1953-1958) [Text] / F. I. Nowik. – Moscow : IRI RAN, 2014. – 368 p.
No full textThe author of the review analyses F.I. Nowik’s book about the Soviet policy in German question in the first six years of N.S. Khrushchev’s rule. The author pays special attention to the problems that F.I. Nowik has investigated for the first time: the discussion of the German question at the Conferences of the USSR, the USA, the UK and France in 1954-1955, creation and development of the attitudes of the USSR and West Germany in 1955-1958
Seismic-interferometric applications for near-surface and mineral exploration
No full textSeismic methods are widely used for the exploration of the Earth’s subsurface. While they allow higher resolution compared to other geophysical methods, their performance depends on site and geological characteristics, and the volume and type of recorded information. Additionally, data processing plays a critical role in the efficacy of the application of seismic methods.A common challenge when utilising seismic methods arises as a result of field restrictions and cost constraints. As a consequence, seismic data often suffer from irregular or sparse spatial sampling, which can affect the application of advanced processing and imaging algorithms, for instance, surface-related multiple elimination and wave equation migration. These algorithms require dense and regular sampling to provide reliable results. Thus, seismic-data regularisation and interpolation are commonly utilised processing steps. Nevertheless, the interpolation of data for relatively large gaps is not trivial, in particular for land data acquired in complex geological settings where the seismic events exhibit pronounced curvature and lack of continuity...
Effect of anthropogenic activities on the water quality parameters of federal university of agriculture Abeokuta reservoir
No full textThe study aimed to investigate the impacts of land use types on surface water quality and to determine
the various anthropogenic activities of the surface water flowing into the reservoir. Four sampling
stations were selected around the study location and water samples collected biweekly from February to
June 2013. The result showed that the water quality parameter varied during the study with temperature
ranged between 26.88-31.440C, pH (6.82-7.98), alkalinity (6.66-14.5mg/l) and dissolved oxygen (DO)
(3.94-6.82mg/l). Highest DO was observed at the reservoir. No significant difference (p<0.05) was
observed in the values of alkalinity among the water bodies. Temperature was statistically similar
(p>0.05) at three of the stations but significantly different (p<0.05) at the reservoir. The study concluded
that water quality of the reservoir was adversely affected by human activities such as domestic runoff,
agricultural runoff, and refuse dump as well as seasonality in the streams flowing into the FUNAAB
reservoir
Assessment of fecundity of Brycinus macrolepidotus in Akomoje water reservoir, Abeokuta, South West, Nigeria
No full textOverfishing and threat of extinction globally has been a topic of
concern in the fisheries sub-sector over the years. This study assessed
some aspect of the biology of Brycinus macrolepidotus in Akomoje
reservoir, lower River Ogun, Nigeria. A total number of 838 fish
specimens were collected bi-monthly for a nine month period from
commercial catches using cast nets and long line. A total number of 51
mature female were selected for fecundity analysis which was limited to
only sexually gravid female fish. Length and weight of experimental fish
were measured. Data were subjected to analysis of variance (ANOVA),
descriptive and inferential statistics. Correlation statistics was carried out
to ascertain relationship between absolute and relative fecundity with
length and weight of fish. Length and weight of experimental fish ranged
between 14.5-39.4 cm and 938-1956 g. The relative fecundity ranged
between 441 and 3,597 eggs with a mean of 1,702±0.16 eggs while
absolute fecundity ranged from 5,838 to 39,208 eggs with a mean of
14,326±0.52 eggs. Strong positive relationship existed between total length
and absolute fecundity (r= 0.74), and relative fecundity (r = 0.81). The
reproductive potential of the species in this water body showed the
ecological suitability of the species to its environments and to its thriving
fisheries. The skewed sex ratio observed is an indication of threat to the
species abundance in the lower River Ogun. Therefore, the habitat should
be monitored towards sustainable methods of managing the stock in the
reservoir
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