Paravasal Connective Tissue Parameters Vs. Morpho-Functional Indicators In The Intraorgan Blood Vessels Of The Younger Men Lungs

Objective — The objective of this research was to identify correlations between the paravasal components connective tissue of the blood vessels of lungs and their morpho-functional parameters. Material and Methods — In order to determine the structure of the paravasal connective tissue, the histotopographic and histological examination of lung preparations of 20 men corpses of the first mature age period was held, to determine the capacity and capacitive characteristics of the vascular bed, the determination of the Kernogan index (IK) and the veno-arterial index (VAI) were carried out. Results — It was ascertained that in the structure of the paravasal connective tissue two layers could be conditionally distinguished – the "central" and "peripheral", differing in the architectonics of the fibrous component, the nature of interaction with nearby anatomical structures. It was also revealed that infrared venous vessels IK was expressed in a greater degree in comparison with arterial. When determining VAI vascular, the channel revealed that the area of venous vessels prevailed over the arterial area. Besides, the clear correlation relationships of the structural elements of the paravasal connective tissues were investigated with arterial and venous vessel capacity values and their capacitive characteristics. Conclusion — The presence of correlation relationships confirmed a clear interaction between structural organization of the paravasal connective tissue and the functional activity of the blood vessels, providing optimal hemodynamic conditions in the organ.

Do efficient small-scale fishers stay active in eras of introducing individual transferable quotas? Evidence from Denmark

Theory suggests the use of individual transferable quotas (ITQs) as a solution to overcapacity and to keep efficient fishers active. While the reduction of overcapacity under ITQ implementation is well documented, empirical evidence on the role of capacity utilisation in adjusting the labour force is scarce. This article analyses whether the capacity utilisation of the vessels that fishers own/work on influences their probability of continuing fishing or whether factors such as fishing income and pension are more important. Danish small-scale fisheries with vessels less than 17 m in length, in which ITQs were introduced in 2007, are studied using a multinomial logit regression based on a unique dataset of individual income and socioeconomic characteristics of Danish fishers in the period 2002-2012 as well as individual vessel data. Together with other relevant socioeconomic variables, vessel capacity utilisation is included in the regression. The latter is identified in a productivity analysis of all commercial active vessels using Data Envelopment Analysis. It is found that increasing vessel capacity utilisation both significantly and positively influences the decision to stay in a small-scale fishery. Increasing income from fisheries also significantly influences the probability of staying in the fishery business. The Danish results provide evidence that the most efficient fishers are those who remain active when ITQs are implemented.

Analisis Kebutuhan Es dan Dampaknya Terhadap Kualitas Ikan di Pelabuhan Perikanan Samudera Lampulo Banda Aceh

The freshness of fishes caught by fishing vessels must be maintained to preserve the fish quality, which usually using ice as the cooling media. The ice needed depend on the catch amount, vessel capacity, and the temperature. The aim in this study was to analyze the amount of ice needed for fishing vessels and the effect of ice on the quality of fishes caught at the Lampulo Ocean Fisheries Port in Banda Aceh. This research was conducted from May to August 2018, using descriptive method with organoleptic test and simple regression analysis. The result shows that the total amount of ice blocks needed by fishing vessels in the Lampulo Ocean Fishery Port for fishing activities is 11,337 tons / month. The fish quality shows organoleptic scale value of 7 to 8, which mean that the fishes caught in the Lampulo Ocean Fishery Port belong in fresh category. From the results of the Regression analysis can be concluded that the amount of ice carried by fishing vessels for fishing operations have a significant effect on the quality of the fish.

Hydrodynamic Coefficients for Suction Anchors During Installation Operations

Increasing demands on economy in the offshore industry and extension to North Atlantic all-year operations bring along a requirement for more accurate numerical simulations of marine installation operations. These simulations will assess the necessary vessel and crane capacity and determine the limiting sea state for the installation. An essential input to such analysis is hydrodynamic coefficients for the structures to be installed. Together with the vessel capacity, the limiting sea-state will, in many cases be dependent on the coefficients used in the simulations. A realistic estimate of the coefficients for the structure in question will therefore have directly influence on the cost of the operation. Coefficients for hydrodynamic added mass and damping for simple geometries are given in standard textbooks and in the “Recommended practice for modelling and analysis of marine operations”, DNVGL-RP-H103. For more complex structures and structure parts on the other hand, there is a lack of published data. MARINTEK and NTNU have through the last decades performed model testing of different structural details as well as complete subsea structures. During the research program MOVE, started in 2015 by NTNU, MARINTEK and SINTEF, a considerable amount of model test data is collected and compared to obtain general trends and connections suitable for engineering estimates of coefficients to be used in numerical simulations. Suction anchors are widely used for permanent mooring of floating production and storage vessels, and also for foundation of subsea structures. In several cases use of suction anchors have replaced piling for foundation of offshore wind turbines and jacket platforms. The anchors can be exposed to high hydrodynamic forces during the installation. This paper presents hydrodynamic coefficients in heave for suction anchors with different degree of perforation of the top plate and different height/diameter relations. The results range from anchors with no perforation to around 18% perforation.