Browsing by Subject "concept"

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Access status: Open Access ,
Agricultural land protection by spatial planning in Bulgaria
(Wydawnictwa AGH, 2020) Moteva, Milena; Marinova, Bisserka
Agricultural land is a basic resource for the livelihood of the Bulgarian population. However, its management is unstable and is connected with many unresolved or wrongly resolved problems which make it difficult to exercise its underlying function. This is mainly due to fragmented land legislation that has a number of disadvantages: the transformation of agricultural land into urban land is easy, control of land quality is poor, and there is a deficiency of agricultural spatial planning regulations. One of the specific tools for preserving the natural function of agricultural land is spatial planning, subject to the strategic documents of the country. According to a newly elaborated concept on agricultural territory planning, this process is two‑staged: on the municipal and on-farm level. The objectives of the paper are: 1) to analyze the effectiveness of national legislation in regard to preserving the natural function of agricultural land, 2) to defend the necessity of the normative framework completion with precise spatial planning rules for agricultural land, and finally, 3) to draw attention to a new concept on agricultural territory planning by presenting the basic cadastral and specific data for performing spatial GIS analyses and elaborating spatial plans. Data from national statistical institutions were used, and methods of analysis and synthesis were applied. The data needed for GIS analyses and elaboration spatial plans for agricultural territory are listed. The paper asserts that spatial planning is a tool for regulating agricultural land use, for setting territory conditions for preserving and improving land quality, for protecting land tenure rights and for developing successful and high‑income agribusiness.
Access status: Restricted ,
Koncepcja napędu pojazdu samochodowego systemem zasilanym gazem drzewnym
(Data obrony: 2012-12-05) Zachwieja, Szymon
Wydział Geologii, Geofizyki i Ochrony Środowiska
Master's thesis presents a conceptual model of wood gas gasifier, based on the total absence of air. It also presents the cooling system, exhaust gas purification, and power the internal combustion engine.
Access status: Open Access ,
Mature gas fields rehabilitation concepts
(2014) Tătaru, Argentina; Şuţoiu, Florinel; Balázs, Sándor
Rehabilitation operations are applied to mature gas field, which although have a significant history production, owns a continuous energetical capacity which could be exploited in economicaly efficient conditions. For rehabilitation are selected from all the mature fields those which could additionally offer to the currently obtained basis production, a supplementary production, generated through interventions in reservoirs, wells or surface infrastructure. Although the opportunity of mature gas field rehabilitation is evident and unanimously accepted, the effective implementation of the concept represents a complex intervention. This fact is just due to natural gas reservoirs diversity, which involves developing particular models of rehabilitation, adapted to each reservoir capability. Conceptually, mature gas field rehabilitation can be divided in three sequences: reservoir, well, surface facilities. Intervention in one section or another, or concomitent intervention in all three sequences, is dictated by technical and economical reasons. Mature gas field rehabilitation must begin with main production problems identification that once recognized can be solved by remedial actions. Such corrective measures are commonly used in order to inerease the productivity of gas wells and removing restrietions on reservoir - well - surface facilities route.