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Wyświetlanie 1-15 z 53
Tytuł:
Morphometric analysis in investigations of the coastal zone. Part I. Separation of morphological elements and scope of morphometric measurements
Autorzy:
Dubrawski, R.
Powiązania:
https://bibliotekanauki.pl/articles/111415.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
coastal zone
morphological elements
morphometric parameters
Opis:
Hypsometric and bathymetric measurements of the Polish coastal zone, which were carried out since the early 50 ties of the last century, provided a very large amount of empirical material. Standardisation of profile recordings in the Coastal·Zone Databank provided a basis for the determination of the multi-temporal changes of the coast. Comparative analysis of coastal zone profiles is of basic importance in planning coastal protection and in designing coastal defence methods. For this aim morphological elements of the shore (beach and dune) and the nearshore (from waterline seawards) zones were separated, and measurements were made on profiles drawn in identical scale. In the present paper, methods of separating morphological elements and the scope of morphometric measurements on cross-shore profiles are presented. The next parts shall discuss: the methods of analysing morphometric parameters (part II), the methods of determining the erosion/accretion systems (part III), and the use of morphometric analysis in the protection of selected regions of the Polish coast (part IV).
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 1; 39-53
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of geospatial tools in morphometric analysis and prioritisation of sub-catchments of the soundgrougrou (Casamance Basin)
Autorzy:
Faye, Cheikh
Ndiaye, Modou
Powiązania:
https://bibliotekanauki.pl/articles/2054999.pdf
Data publikacji:
2021-09-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
DEM
morphometric aspects
prioritisation, erosion
Soungrougrou basin
Opis:
The prioritisation of catchments, particularly in the context of catchment plans and management programmes, is part of water resources development. In fact, morphometric analysis assisted by geospatial technology is carried out by prioritising sub-catchments according to their natural resource availability characteristics. Information on the geomorphology and erosion factors of the study area is used in the area in the preparation of local models of ungauged sub-catchments, which otherwise lack an adequate hydrological database. The objective of this paper is to use geographic information systems (GISs) in morphometric analysis to prioritise sub-catchments of the Soungrougrou (a tributary of the Casamance River). In this respect, the integrated methodology involving morphometric aspects from geospatial technology is used. To carry out the geospatial research, basic mathematical equations used in a GIS environment were used to measure a series of aspects of hydrology such as flow length, flow length ratio, bifurcation ratio, drainage density, drainage texture, flow frequency, elongation rate, circularity ratio, form factor, relief and relief ratio. The results divided the whole catchment into three priority areas, namely high, medium and low. The results are relevant for establishing soil and water conservation plans in the Soungrougrou basin, as well as adequate groundwater production and management. The high category (sub-basins 6, 8, 14, 17 and 18) is subject to maximum soil erosion, which requires immediate intervention to avoid possible natural hazards.
Źródło:
Quaestiones Geographicae; 2021, 40, 3; 65-84
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody morfometryczne w badaniach geomorfologicznych regionu lubelskiego
Morphometric methods in geomorphological research of the Lublin Region
Autorzy:
Brzezińska-Wójcik, T.
Gawrysiak, L.
Chabudziński, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/295098.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
metody morfometryczne
region lubelski
morphometric methods
Lublin Region
Opis:
W artykule dokonano przeglądu prac, w których zastosowano metody morfometryczne zmierzające do analizy i uwydatnienia cech geomorfologicznych regionu lubelskiego. Szczególną uwagę zwrócono na moSliwość wykorzystania wskaźników morfometrycznych do: oceny mobilności neotektonicznej obszaru, zwłaszcza Roztocza i Wyżyny Lubelskiej, analiz zależności pomiędzy orientacją i kształtem głównych form rzeźby a orientacją uskoków lub/i mezostruktur tektonicznych, szacowania rozmiarów erozji wąwozowej na Wyżynie Lubelskiej (zwłaszcza na Płaskowyżu Nałęczowskim) i Roztoczu Gorajskim oraz wydzielania regionów geomorfologicznych WySyny Lubelskiej w oparciu o wysokości względne i średnie oraz poziomy denudacyjne. Przywołano również próbę zastosowania metod morfometrycznych do szacowania głębokości podłoża i pomiarów miąższości osadów plejstoceńskoholoceńskich, w dolinie Sopotu na Roztoczu Tomaszowskim. Duże znaczenie praktyczne, zwłaszcza w planowaniu przestrzennym, może mieć mapa średnich nachyleń, która dobrze oddaje zróżnicowanie spadków terenu w odniesieniu do budowy geologicznej analizowanego obszaru. Metody morfometryczne pozwalają na prezentowanie przestrzennego rozmieszczenia form, zjawisk i procesów oraz ich ocenę. Oprócz tego umożliwiają interpretację struktury analizowanych obszarów, jak również rozważania natury paleogeograficznej.
The article provides a review of the studies where morphometric methods were used to analyse and highlight the geomorphological settings of the Lublin Region. Special emphasis was given to the possibility of using morphometric coefficients in: the evaluation of the neotectonic mobility of the area, particularly the Lublin Upland and Roztocze, an analysis of the relations between the orientation and shape of main relief forms and the orientation of faults and/or tectonic mesostructures, assessing the extent of gully erosion in the Lublin Upland (particularly in the Nałęczów Plateau) and Goraj Roztocze, and distinguishing the geomorphological regions of the Lublin Upland on the basis of relative and mean altitudes and denudation horizons. An attempt at using morphometric methods to estimate the depth of the basal complex and to measure the thickness of Pleistocene and Holocene deposits in the Sopot Valley in Tomaszów Roztocze has also been discussed. Map of average slope, due to accurate depiction of the diversity of relief inclination with connection to geological structure, can be of large practical importance, especially for spatial planning. Morphometric methods allow for presenting spatial distribution of forms, phenomena and processes, as well as their evaluation. In addition, they allow for interpreting the structure of studied areas and reflexions of paleogeographical nature.
Źródło:
Landform Analysis; 2010, 12; 7-22
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation of genetic and morphometric types of Šventoji River catchment relief (north-east Lithuania)
Autorzy:
Česnulevičius, A.
Morkunaite, R.
Powiązania:
https://bibliotekanauki.pl/articles/2059179.pdf
Data publikacji:
2003
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Šventoji catchment
relief genesis
morphometric types of relief
Opis:
The Šventoji is a river of the Baltic Upland. The catchment of the Šventoji is teardrop-shaped up to 50–60 km wide, and 160 km long. Most of the catchment is situated in the Aukštaičiai Upland and the Western Aukštaičiai Plateau. The surface of the catchment was formed by Quaternary ice sheets that deposited a moraine layer 100–200 m, the thick topographic relief dating to the late Nemunas (Weichselian) Glaciation phases. The eastern part of catchment was formed in the East Lithuanian Phase, the middle part in the South Lithuanian Phase and the western part in the Middle Lithuanian Phase. The catchment surface is composed of three different genetic relief types: the ice-marginal deposits of the East Lithuanian Phase, represented by small hills; the middle part of the Šventoji catchment, transected by a few ice-marginal ridges of the South Lithuanian Phase which form small hills; and the western part of the catchment is transected by a few asymmetric ridges of the Middle Lithuanian Phase. The eastern part dominantly comprises ice-marginal deposits with glaciolacustrine and glaciofluvial intercalation; the middle part comprises variable glaciolacustrine, basal moraine and ice-marginal deposits; the western part by basal moraine and ice-marginal deposits.
Źródło:
Geological Quarterly; 2003, 47, 2; 149-154
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative Characterization of Farmed African Cat Fish (Clarias gariepinus) in Okitipupa, Ondo State, Nigeria
Autorzy:
Adeoye, A. A.
Rotimi, E. A.
Udoh, J. E.
Powiązania:
https://bibliotekanauki.pl/articles/1192677.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
African catfish
age
morphometric traits
Okitipupa and sex
Opis:
Data on body weight and morphometric traits from one hundred and fifty-eight (158) live African cat fish sampled from two locations around Okitipupa within Ondo State, Nigeria was subjected to simple statistics analysis, Pearson’s correlation and analysis of variance to test for the effect of sex, age, location and body size on the body weight and the morphometric traits. The coefficient of variation (CV) varied among the parameters were considered. Results obtained revealed that body weight had the highest value (46.18%) in the adult fish while it was 22.76% in juvenile fish. Insignificant effect of sex (p > 0.05) was observed in both adult and juvenile fish in all the parameters considered. Age had a very highly significant effect (p < 0.0001) on all the parameters considered. The adult had higher values compared to the juvenile in body weight and the morphometric traits. Effect of body size was significant (P < 0.0001) on body weight and morphometric traits, the estimates increased from small size to medium to big size. Significant effect (P < 0.0001) of location was observed only on body weight, total length, standard length and head length. The fish from farm A had higher values compared to farm B. The correlation coefficients among the traits for juvenile and adult fish ranged between low to high and were significant (P < 0.05, P < 0.01 and P < 0.0001). Morphometric traits can be used in characterizing African catfish based on age and body size.
Źródło:
World Scientific News; 2016, 47, 2; 329-339
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protein patterns and their association with photosynthetic pigment content, agronomic behavior, and origin of purslane accessions (Portulaca oleracea L.)
Autorzy:
Talei, D.
Naji, A.M.
Powiązania:
https://bibliotekanauki.pl/articles/2096425.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chlorophyll
genetic diversity
morphometric
Portulaca oleracea
protein pattern
Opis:
In this study, the proteomic, morphometric, and photosynthetic pigment data of purslane (Portulaca oleracea) accessions were combined together to show their impact on genetic variation in order to establish a relationship between protein patterns and phenotypic behavior of the plant. Seeds of 18 collected purslane accessions were cultivated based on a completely randomized design with three replicates. Before the flowering stage, the data on morphology, photosynthetic pigment content, and seed proteins were obtained. The results showed a significant difference among purslane accessions in terms of the most studied agronomic characteristics and the content of photosynthetic pigments and proteins. The cluster analysis of the 18 purslane accessions based on agronomic data, and photosynthetic pigment content, and protein pattern data produced three main clusters. Moreover, the seed protein analysis revealed that the two polymorphic protein bands of size 40 kDa (protein “a”) and 30 kDa (protein “b”) effectively diversified the agronomic, photosynthetic pigment, and phylogenetic relationships among the purslane accessions. Interestingly, protein “a” was produced in plants growing in low altitude areas and played a suppressive role for TDW, while protein “b” was produced in plants growing in high altitude areas and functioned as an activator agent for this trait. Overall, the outcomes of the present study indicated the presence of high genetic variability (77.6%) among the purslane accessions. These findings suggest that these proteins should be sequenced for further proteomic analyses and can be used for hybridization to generate useful recombinants in segregating generations and improve breeding varieties of P. oleracea.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 3; 245-255
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphometric Relations of Gastropod Species: Nerita albicilla and Patella nigra
Autorzy:
Echem, Roldan T.
Powiązania:
https://bibliotekanauki.pl/articles/1119063.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Mollusca
gastropods
morphometric relationship
shell length
tissue weight
univalve
Opis:
This study aims to compare the morphometric characteristics of Nerita albicilla and Patella nigra and to determine the allometric relationships between the shell weight, shell length, fresh weight, dry weight, tissue weight and shell weight. A total of 200 of Nerita albicilla and Patella nigra were collected along the coasts of Zamboanga City Bay, Western Mindanao, Philippines. Nerita albicilla has the highest mean ± SD in width (1.59 ± 0.19 mm), fresh weight (2.59 ± 0.15 g), tissue weight (1.26 ± 0.83 g), dry weight (2.38 ± 0.55 g) and shell weight (2.19 ± 0.11 g). The fresh weight of Nerita albicilla was strongly related with the shell length. The shell width of Patella nigra was slightly correlated with shell weight. There was slight correlation between the shell width and shell weight and these can be attributed to the developmental, environmental and abiotic factors that highly contribute to the morphology of the gastropods. The calcium carbonate content suspended in the environment has major effect in the shell composition and is directly related with the shell weight. Nutrition is also a major contributory factor in the weight of the shells.
Źródło:
World News of Natural Sciences; 2017, 7; 30-36
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphometric analysis of Klina River basin using geospatial technology and open access datasets
Autorzy:
Çadraku, Hazir
Hasa, Xhesika
Powiązania:
https://bibliotekanauki.pl/articles/27312608.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
digital elevation model
morphometric analysis
stream
water resources
watershed
Opis:
According to the Water Framework Directive 2000/60 EC, the river basin is the basic unit for integrated water management at the basin level. In this sense, the knowledge of the morphometric parameters of the river takes on special importance. Morphometric analysis helps in understanding the geo-hydrological characteristics of a river basin. Various authors point out that the morphometric analyses of a drainage watershed demonstrate the dynamic equilibrium that has been achieved due to the interaction between matter and energy. The analysis of morphometric parameters also facilitates and helps to understand the hydrological relations of the basin. This paper deals with the morphometric analysis of sub-basins in the Klina River basin which is located in the northeastern part of the Dukagjini depression. To determine the morphometric parameters in the Klina River basin, the digital relief model from the Advanced Land Observation Satellite (ALOS) platform with a resolution of 20 × 20 m and the ArcMap 10.5 software were used. The results reveal that the total number of streams is 753 of which 602 are 1st order streams, 119 - 2nd order, 23 - 3rd order, 6 - 4th order, 2 - 5th order, and 1 - 6th order streams. The mean bifurcation ratio is 3.81, drainage density is 1.52 km∙km-2. The data and information presented in this study will be helpful and interesting in the plan of the management of Klina River basin which covers an area of 477 km2 within which is estimated to live about 100,000 inhabitants.
Źródło:
Journal of Water and Land Development; 2023, 58; 31--41
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative estimation of 3D cave networks complexity using random walk analysis
Autorzy:
Błachowicz, T.
Andreychouk, V.
Powiązania:
https://bibliotekanauki.pl/articles/294823.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
speleomorphogenesis
cave networks
random walk
Hurst exponent
morphometric analysis
Opis:
The paper presents a new method of quantitative parameterization of volumetric-net geomorphological structures with the use of random walk formalism and an analysis of self-similarity exponent distribution derived from random walk experiments. As examples, two American three-dimensional Wind and Lechuguilla cave networks were elaborated. The provided methodology is able to uniquely characterize the morphology of cave systems.
Źródło:
Landform Analysis; 2015, 29; 91-96
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tectonic geomorphology of the Sudetes (Central Europe) – a review and re-appraisal
Autorzy:
Różycka, M.
Migoń, P.
Powiązania:
https://bibliotekanauki.pl/articles/191769.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
morphotectonics
tectonic activity
mountain front
fluvial system
morphometric indices
Sudetes
Opis:
The Sudetes are a mountain range in Central Europe, which owes its emergence to the Cenozoic rejuvenation of an old Variscan orogen, subject to stresses from the Alps and the Carpathians. The gross morphological features of the Sudetes are typically explained as reflecting the superposition of the effects of long-term, rock-controlled denudation and Late Cenozoic differential uplift and subsidence. In this paper, early conceptual models, developed in the 1950s and 1960s and emphasizing alternating uplift and planation phases, are presented first. A review of more recent work focused on tectonic landforms and geomorphic indicators of tectonic movements follows, with special attention to fault-generated escarpments, valley morphology, stream longitudinal profiles, terraces and fans, drainage basin characteristics and regional geomorphometric studies. Attempts to provide a timeframe of tectonic relief differentiation are also summarized. In the closing part of the paper, the existing approaches and findings are re-evaluated in order to identify challenges and perspectives for future work. The availability of high-resolution digital terrain models creates a unique opportunity to quantify relief features and detect even the subtle topographic signatures of recent tectonics. A need to reconcile the results of geomorphological analysis with those emerging from other studies focused on faults is highlighted.
Źródło:
Annales Societatis Geologorum Poloniae; 2017, 87, 4; 275-300
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anatomical dissection of the calcaneofibular ligament of the ankle – a macroscopic and morphometric study
Autorzy:
Yabka, A.
Bahia, H.
Powiązania:
https://bibliotekanauki.pl/articles/2098528.pdf
Data publikacji:
2021
Wydawca:
Instytut Medycyny Wsi
Tematy:
calcaneofibular ligament
lateral ankle sprain
instability
morphometric study
anatomical variation
Opis:
Introduction and objective. Common to the talocrural and subtalar joints, the calcaneofibular ligament forms with the anterior bundle a mechanical coupling factor for ankle stabilization. Adhering to the deep surface of the fibular sheath, doubled in depth by the lateral talocalcaneal ligament, it is solicited in isolated varus and its lesion is involved in subtalar instability. The therapeutic strategy for chronic ankle instability is currently based on the anatomical reconstruction of the ligaments, particularly by arthroscopy, hence the objective of this study, which aims to highlight the great variability of the calcaneofibular ligament. Materials and method. Our work is based on the dissection of 24 ankles. The number of beams, the dimensions at the neutral point and after power-up, the relationships with the surrounding anatomical structures as well as the points of insertion of the CFL are studied. Results. The calcaneofibular ligament was monofascicular in 91.6% of cases and bifascicular in 8.4%. Its average length in a neutral position was 26.85 ± 3.46 mm, and its width was 5.33 ± 1.45 mm. In dorsiflexion, the length was 27.10 ± 0.05 mm, and in forced inversion, it was 26.98 ± 0.07 mm. The distance between its fibular insertion and the apex of the lateral malleolus was 6.2 ± 0.9 mm. Conclusions. Injuries of the calcaneofibular ligament are common in lateral ankle sprains, which can often get complicated by chronic instability. The macroscopic and morphometric knowledge of this ligament can allow a more accurate anatomical reconstruction and a more accurate choice of graft.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2021, 15, 3; 121-125
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of morphometric features of the eggs of selected alimentary tract parasites and of the plant pollens
Autorzy:
Szwabe, K.
Kurnatowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/6166.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
comparative analysis
morphometric feature
egg
gastrointestinal tract
parasite
plant pollen
Źródło:
Annals of Parasitology; 2012, 58, 2
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of relief development of metal-bonded diamond wheel’s working surface
Ocenka razvitosti relefa rabochejj poverkhnosti almaznykh krugov na metallicheskojj svjazke
Autorzy:
Dobroskok, V.
Shpilka, A.
Morneva, M.
Powiązania:
https://bibliotekanauki.pl/articles/792580.pdf
Data publikacji:
2015
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
wheel
working surface
grinding
3D model
morphometric analysis
triangulation
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2015, 15, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wstępne badania morfometryczne serca w leczonym i nieleczonym doświadczalnym urazie ciśnieniowym płuc
Initial morpphometric hearts tests in treated and non - treated experimental lung pressure injury
Autorzy:
Siermontowski, P.
Bernas, Sz.
Olszański, R.
Koktysz, R.
Kaczerska, D.
Powiązania:
https://bibliotekanauki.pl/articles/366305.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
Tematy:
uraz ciśnieniowy płuc
serce
badania morfometryczne
pulmonary barotrauma
heart
morphometric studies
Opis:
Warunkiem powstania urazu ciśnieniowego płuc jest zatrzymanie powietrza w płucach lub wtłaczanie go do dróg oddechowych pod zwiększonym ciśnieniem, czy też w objętości przekraczającej ich pojemność. Dochodzi do rozrywania miąższu płucnego i przedostania się powietrza zarówno do jamy opłucnowej, i/lub do światła rozrywanych naczyń krwionośnych w przegrodach międzypęcherzykowych. Pozostawia to trwałe następstwa w miąższu płucnym. Celem podjętych badań było zbadanie wpływu zmian w płucach po przebytym urazie ciśnieniowym, na mięsień sercowy oraz stwierdzenie, czy zastosowanie leczenia hiperbarią ma znaczenie dla nasilenia zmian w sercu. Do badań użyto serc 39. królików. U zwierząt grupy doświadczalnej w komorze ciśnieniowej wykonywano uraz ciśnieniowy płuc. Połowę zwierząt tej grupy leczono następnie hiperbarią powietrzną. Grupę porównawczą stanowiły zwierzęta, których nie poddawano żadnym zabiegom, natomiast grupę kontrolną zabiegu stanowiły zwierzęta, którym podczas symulowanego nurkowania nie wykonywano urazu ciśnieniowego. Wszystkie zwierzęta po doświadczeniu obserwowano przez cztery tygodnie a następnie uśmiercono. Podczas autopsji pobierano między innymi całe serca, które po utrwaleniu ważono, określano objętość i mierzono w całości, jak i po wykonaniu przekrojów. Wyniki pomiarów poddano analizie statystycznej. Stwierdzono statystycznie znamienny wzrost wagi i wymiarów serca grup doświadczalnych, w porównaniu z grupą porównawczą. Stwierdzono także, że zastosowanie leczenia hiperbarycznego zmniejsza nasilenie zmian w sercu, szczególnie w komorze prawej.
The condition in which the lung pressure injury originates is when air is stopped in the lungs and is injected to the airways with increased pressure, or in volume exceeding their capacity. Lung parenchyma is torn and the air reaches both the pleural cavity and/or the torn blood vessels in the pulmonary alveolus septum. It leaves long-lasting consequences in the lung parenchyma. The aim of the study was to examine the impact of changes caused by lung pressure injury on cardiac muscle and state whether hyperbaric therapy is of any significance to the escalation of heart changes or not. Hearts of 39 rabbits were used in the study. The animals in the experimental group were put in a hyperbaric chamber and had their lung pressure injured. Half of this group was treated with air hyperbaric treatment. The reference group consisted of animals not exposed to any kind of treatment; the control group comprised animals whose lung pressure was not injured during simulated diving. After the experiment, all the animals were kept under observation for four weeks and then killed. During the autopsy, whole preserved hearts and their sections were taken, weighed and had their volume and size measured. The measurement results were then the subject of a statistical analysis. In comparison with the reference group, the hearts of the animals from the experimental group demonstrated a significant increase in weight and size. It was also stated that hyperbaric treatment decreased the escalation of heart changes, especially in the right ventricle.
Źródło:
Polish Hyperbaric Research; 2010, 2(31); 46-53
1734-7009
2084-0535
Pojawia się w:
Polish Hyperbaric Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Breeds influence on growth ability and predicting body weight from linear body measurements of ducks at various ages
Autorzy:
Ologbose, F. I.
Benneth, H. N.
Ajayi, F. O.
Powiązania:
https://bibliotekanauki.pl/articles/1031794.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Body weight prediction
Duck Genotypes
Growth performance
Mallard
Muscovy
morphometric traits
Opis:
A total of one hundred and twenty ducklings (i. e. 60 Muscovy and 60 Mallard) were used for the study to evaluate the breeds effect on growth performance and prediction of body weight using linear body measurements of two breeds of ducks with the aid of General Linear Model and stepwise regression procedure of SPSS. Data on individual body weight (BW), body height (BH), body length (BL) breast circumference (BC), thigh length (TL), bill length (BIL), wing length (WL)and shank length (SL) of 120 ducks were collected on Muscovy and Mallard ducks and used to predict body weight at 4 and 8 weeks. The results showed that Muscovy (56.6t ± 6.7 – 1037.5 ± 30.29g) was significantly superior (P<0.05) to Mallard (51.8 ± 1.66 – 875.44 ± 70.30g) in body weight and in all the linear body measurements from day old to week 10. Individual body weight and linear body measurements was predicted at various ages (4 and 8 weeks) by genetic groups. The values of the coefficient of determination (R2) ranged from (88.6 – 97%) and (81.8 – 90.3%) in Muscovy and Mallard respectively at week 4. While, (R2) ranged from (58.7 – 92%) and 80.1 – 86.9%) in Muscovy and Mallard respectively at week 8. Since linear body measurements that can readily predict body weight without ducks being slaughtered, it is therefore, highly desirable as it will ensure the selection of animals that will reach market weight and size at relatively faster rate. This will also serve as a tool for breeders in selecting animals destined for use as breeding stock. These Muscovy and Mallard can be improved by exploiting the principle of phenotypic plasticity to obtain strains to complement other breeds of duck. Muscovy can also be used to upgrade some other indigenous ducks for better performance in a systematic breeding program.
Źródło:
World News of Natural Sciences; 2020, 29, 3; 282-289
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
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