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Wyświetlanie 1-14 z 14
Tytuł:
Simulations of the active cab suspension
Autorzy:
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/247941.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
heavy duty machines
active vibration control
platform mechanism
Opis:
In the context of growing ergonomic concerns and pressing competition on the market, designing machines and vehicles offering a better operator comfort has become a major trend in development of heavy-duty machines and vehicles. During the ride over the rough terrain, the cab is subjected to excitations in the form of low frequency and high-amplitude vibration. This study investigates the vibration reduction strategy whereby the machine structure should incorporate an active suspension of the cab. An actuating mechanism is incorporated, connected to the machine frame and the cab, and placed in between. The main system component is a mobile platform to which the cab is attached. Respective drives set in motion the passive links in the actuating mechanism. The drives are equipped with cylinders capturing the instantaneous velocities derived in the control sub-system. The machine frame, subjected to kinematic excitations, performs a movement in space, which has to be measured with a set of sensors to support the control process. Basing on the measured movements of the machine frame, the control sub-system calculates the realtime values of the anticipated load and the required drive velocities. This study focuses on the development of a mechanical model of the actuating mechanism operating in several degree of freedom options. Solving the direct and inverse problems involving the position and velocity of the mechanism allows the Jacobean matrix to be applied in Newton-Euler’s equations. The purpose of the active suspension system is to stabilise the cab in the vertical position and to reduce its lateral vibrations and seat vibrations in the vertical. This study summarises the results of simulations performed to evaluate the system's performance and its power demand.
Źródło:
Journal of KONES; 2012, 19, 1; 455-464
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study operation of the active suspension system of a heavy machine cab
Analiza pracy aktywnego zawieszenia kabiny maszyny roboczej
Autorzy:
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/279997.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
active vibration reduction
cab suspension
platform mechanism
Opis:
This study is a part of research on active suspension systems of cabs in heavymachines and trucks, used for suppressing low-frequency and large- amplitude vibrations. The suspension system incorporates two platform mechanisms placed one upon the other. The lower mechanism is responsible for maintaining the cab in the vertical position whilst the upper mechanism controls the cab movements in the vertical direction. Motion of the cab is described using versors associated with the mechanism links. Relationships are derived that yield the instantaneous velocities of the drives that lead to reduction of the cab vibrations in selected DOFs. The procedure is shown for calculating the loads acting on the drives of the active suspension during the specified movement of the machine frame. The mathematical model is further utilised in simulations of the suspension operation.
Artykuł stanowi etap prac dotyczących aktywnego zawieszenia kabiny maszyny roboczej, służącego do redukcji drgań niskoczęstotliwościowych o dużej amplitudzie. Zawieszenie składa się z dwóch mechanizmów platformowych umieszczonych jeden na drugim. Dolny mechanizm jest odpowiedzialny za utrzymanie kabiny w pionie. Górny mechanizm odpowiada za ruch kabiny w kierunku pionowym. Do opisu ruchu wykorzystano wersory związane z ogniwami mechanizmu. Wyprowadzono zależności na chwilowe prędkości napędów, powodujących redukcję drgań kabiny maszyny w wybranych stopniach swobody. Przedstawiono sposób obliczania obciążeń napędów aktywnego zawieszenia kabiny dla znanego ruchu ramy maszyny. Na podstawie matematycznego modelu wykonano symulacje pracy zawieszenia.
Źródło:
Journal of Theoretical and Applied Mechanics; 2010, 48, 3; 715-731
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics model of stabilization mechanism for helicopter PAD
Autorzy:
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/241532.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
maritime engineering
kinematic analysis
dynamic analysis
mechanism design
safety
Opis:
Helipad located on ships greatly increases their ability to perform tactical and logistical abilities. They allow performing reconnaissance from the air, transportation of cargos and people to and from the ship. Landing on a moving ship particularly small size during bad weather is not a safe manoeuvre. Article provides an overview of existing solutions that improve safety during the landing manoeuvre of the helicopter to the ship and describes an innovative mechanism with can stabilize helicopter pad in four degrees of freedom. This solution is characterized in that the landing plate is movable and actuated simultaneously by two support plates and two levers. Plates and levers are driven by separate linear motors that move along the guides connected to the base. The main feature of the mechanism is that when the base is not stable, it can reduce the linear movement of the landing platform in the vertical and transverse direction and angular displacement around an axis perpendicular and parallel to the axis of the ship. A preferred feature of the mechanism is that in folded position it occupies relatively little space. In addition, advantageous attribute of the mechanism is its large working area, enabling the reduction of high amplitude vibration. The article contains a calculation of the kinematics for the proposed structure of the mechanism. It also includes speed drives waveforms, which are the result of simulations for the input parameters of the ship movement.
Źródło:
Journal of KONES; 2016, 23, 2; 61-68
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stabilization mechanism for helicopter pad with four degrees of freedom
Autorzy:
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/242515.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
mechanical engineering
maritime engineering
kinematic analysis
mechanism design
safety
Opis:
Helipad located on ships greatly increases their ability to perform tactical and logistical abilities. They allow performing reconnaissance from the air, transportation of cargos and people to and from the ship. Landing on a moving ship particularly small size during bad weather is not a safe manoeuvre. Article provides an overview of existing solutions that improve safety during the landing manoeuvre of the helicopter to the ship and describes an innovative mechanism with can stabilize helicopter pad in four degrees of freedom. This solution is characterized in that the landing plate is movable and actuated simultaneously by two support plates and two levers. Plates and levers are driven by separate linear motors that move along the guides connected to the base. The main feature of the mechanism is that when the base is not stable, it can reduce the linear movement of the landing platform in the vertical and transverse direction and angular displacement around an axis perpendicular and parallel to the axis of the ship. A preferred feature of the mechanism is that in folded position it occupies relatively little space. In addition, advantageous attribute of the mechanism is its large working area, enabling the reduction of high amplitude vibration. The article contains a calculation of the kinematics for the proposed structure of the mechanism. It also includes speed drives waveforms, which are the result of simulations for the input parameters of the ship movement.
Źródło:
Journal of KONES; 2015, 22, 3; 7-12
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanism of a motion platform inducing the movement of the operator’s seat in a heavy machine
Autorzy:
Tora, G.
Trzaska, W.
Powiązania:
https://bibliotekanauki.pl/articles/265478.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
symulator
synteza
modelowanie mechanizmu
modeling of the mechanism
synthesis
simulator
Opis:
One of the major work safety issues involves the investigations of machine vibrations and the way they affect the machine operators. These investigations can be performed in the laboratory conditions in a setup in which the seat vibrations are induced by a motion platform. A complex mechanism is proposed implementing 3 translations and 2 rotation movements, and actuated by three electric motors. This study investigates the design structure of the real motion platform mechanism and provides the synthesis of link dimensioning. Kinematic dependencies are formulated and the Jacobian matrix is derived accordingly to solve the equations of motion. Computer simulation procedure yields the critical seat vibration frequency and amplitudes for the available asynchronous motors.
Źródło:
International Journal of Applied Mechanics and Engineering; 2016, 21, 4; 1007-1015
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the wheel orientation angles in lockheed F-104S starfighter aircraft
Autorzy:
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/241534.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
mechanical engineering
aircraft engineering
kinematic analysis
Opis:
This article contains kinematic analysis of the chassis mechanism used in Lockheed F-104S Star fighter aircraft, which is recently used by the NATO military aviation as an interceptor. The mechanism of the chassis is made up of several smaller subsystems with different functions. The first mechanism is used to eject the chassis before landing (touchdown) and fold it to hatchway after the lift off. The second mechanism is designed to perform rotation of the crossover with the wheel, in order to adjust the position of the wheel to fit it in the limited space in the hold. The third mechanism allows movement of the chassis resulting from the change in length of the damper. To determine the position of the following links of the mechanism was used calculus of vectors in which unit vectors were used to represent the angular position of the links. Often used equation, which describes a polygon vector, and the equation of unknown unit vector possible to determine if the other two and the angles between them are known. Calculations were performed in the three local systems of reference, thus were obtained the simplest forms of solutions for links positions. The corresponding scalar products of unit vectors are elements of two transition matrices. These matrices are needed for the vectors calculation in each of the three coordinate systems. The result of the analysis is to determine the angle of convergence and the angle of heel wheels as a function of variable length of hydraulic cylinder and the length of the shock absorber. It has been shown that length of the shock absorber has little effect on angle of convergence, but has a significant effect on the angle of the tilt-wheel landing gear.
Źródło:
Journal of KONES; 2013, 20, 3; 79-87
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Working area of the helicopter PAD stabilization mechanism
Autorzy:
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/242778.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
mechanical engineering
maritime engineering
mechanism design
safety
Inżynieria mechaniczna
inżynieria morska
bezpieczeństwo
Opis:
Helicopter pad located on the ship significantly increase the operational capabilities of military and civilian ships. During the storm, especially side tilts of the ship hinder or even prevent the safe use of the helicopter pad. It is proposed to apply the system placed between the deck of the ship and landing site plate, driven by four independent cable drives located under the deck. The task of the system will be preventing from transferring to Helicopter pad the tilt of the ship around the longitudinal and transverse axis and the displacement of the deck along the transverse and vertical axis within the limits of the work area. The mechanism consists of four movable links on which the movable helicopter pad platform is located. As the linear actuators, trolleys moving along horizontal guides were used, powered by system of steel cables with four independent electric motors. In folded state the mechanism, take up appropriately little space under the deck area. For the assumed extreme amplitudes of the ship motion, minimum dimensions of the mechanism links that meets the requirement to work in one configuration and lack of collisions were determined. Kinematic relationships were created indicate which mechanical quantities should be measured in real time to determine the momentary drives speeds. For the adopted assumptions simulation was performed, confirming the predicted behaviour of the system. Based on the kinematic equations of system and taking in consideration collisions and geometrical limits, working area for the flat part of the mechanism was determined.
Źródło:
Journal of KONES; 2017, 24, 1; 59-66
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic positioning system of helicopter pad on the ship
Autorzy:
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/243395.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
mechanical engineering
maritime engineering
kinematic analysis
mechanism design
Opis:
Helicopter pad located on the ship significantly increase the operational capabilities of military and civilian ships. During the storm, especially side tilts of the ship hinder or even prevent the safe use of the helicopter pad. It is proposed to apply the system placed between the deck of the ship and landing site plate, driven by three independent linear drives located under the deck. The task of the system will be preventing from transferring to Helicopter pad the tilt of the ship around the longitudinal axis and the displacement of the deck along the transverse and vertical axis within the limits of the work area. The mechanism consists of the three movable pillars with the plate on top, which is the movable helicopter pad platform. As the linear actuators, plates moving along a horizontal guide were used, powered by system of steel cables with three independent electric motors. In folded state the mechanism, take up appropriately little space in the deck area. For the assumed extreme amplitudes of the ship motion, minimum dimensions of the mechanism links that meets the requirement to work in one configuration and lack of collisions were determined. Kinematic relationships were created indicate which mechanical quantities should be measured in real time to determine the momentary drives speed. For the adopted assumptions simulation was performed, confirming the predicted behaviour of the system. Based on the dynamics equations of system, drives loads, their power and individual links and joints load were determined.
Źródło:
Journal of KONES; 2014, 21, 4; 21-27
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dimensional synthesis of active suspension cab mechanism links
Autorzy:
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/243397.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
active vibration damping
platform mechanism
synthesis of the mechanism’s dimensions
Opis:
One of the directions of the heavy duty machine is the operator cabin construction, which provides a high level of comfort. Adequate control of active suspension drives can reduce low frequency and large amplitude vibrations occurring in a number of cabin degrees of freedom. The main link of the mechanism is the platform with cab suspended on two rockers and one actuator. Article proposes methods for determining the length of suspension arms, the width of the platform and centres of the joints, which are connected to the suspension. It has been proved for the flat case that if the momentary centre of rotation of the platform relative to the machine frame is located inside the road roughness zone is a single drive can effectively reduce transverse vibration and angle vibration around the longitudinal machine axis. Further conditions that determine links size are to prevent from peculiar positions, to avoid collision between cab wall and suspension joints. Presented relations between the height of the waist rough roads, wheelbase machine, cab mounting height on the machine and the dimensions of the link suspension mechanism. Presented dimensional calculation results cab suspension links dedicated to Caterpillar 924 GZ loader. Assuming the vertical driving cab calculated inaccuracy of its transverse displacements. Presented the results showing influence of the cab assembly height on the cabin mounting links dimensions.
Źródło:
Journal of KONES; 2013, 20, 4; 47-53
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of control drives a tower crane
Symulacja sterowania napędami żurawia wieżowego
Autorzy:
Solarz, W.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/374309.pdf
Data publikacji:
2011
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
automatyzacja
kontrola
żurawie wieżowe
automation
control
tower cranes
Opis:
The design of a control system for a tower crane is investigated. Underlying the controller design is the theory of optimal linear control. Computer models of a crane and the control systems for the crane drives are developed. Simulation data reveals that the motion of the load can be effectively controlled so that it should follow a predetermined trajectory.
Artykuł przedstawia budowę układu sterowania żurawia wieżowego. W regulatorze układu wykorzystano teorię optymalnej regulacji liniowej. Zbudowano komputerowe modele żurawia oraz układu regulacji napędów. Na podstawie symulacji wykazano, że można efektywnie sterować ruchem ładunku żurawia zgodnie z założoną trajektorią.
Źródło:
Transport Problems; 2011, 6, 4; 69-78
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of links positions in landing gear mechanism
Autorzy:
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/955121.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
samolot
podwozie samolotu
kinematyka
aircrafts
landing gear
mechanics
kinematics
Opis:
This article contains a kinematic analysis of an aircraft chassis mechanism in a range of positions. The mechanism of the chassis is made up of several smaller subsystems with different functions. The first mechanism is used to eject the chassis before landing (touchdown) and fold it to hatchway after the lift off. The second mechanism is designed to perform rotation of the crossover with the wheel, in order to adjust the position of the wheel to fit it in the limited space in the hold. The third mechanism allows movement of the chassis resulting from the change in length of the damper. To determine the position of the following links of the mechanism calculus of vectors was applied in which unit vectors were used to represent the angular position of the links. The aim of the analysis is to determine the angle of convergence and the angle of heel wheels as a function of the variable length of hydraulic cylinder, length of the shock absorber, length of the regulations rods.
Źródło:
International Journal of Applied Mechanics and Engineering; 2014, 19, 3; 503-512
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Motion planning of a novel 2-DOF parallel manipulator applied as driving simulator of the wheel loader
Autorzy:
Knapczyk, J.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/955229.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
symulator
ładowarka kołowa
manipulator
simulator
wheel loader driving
motion planning
Opis:
A novel parallel manipulator with 3 legs (2 actuated by linear actuators and one supporting pillar),which is applied in a wheel loader driving simulator, is proposed in this paper. The roll angle and the pitch angle of the platform are derived in closed-form of functions of the variable lengths of two actuators. The linear velocity and acceleration of the selected point and angular velocity of the moving platform are determined and compared with measurement results obtained in the respective point and in the body of the wheel loader. The differences between the desired and actual actuator displacements are used as feedback to compute how much force to send to the actuators as some function of the servo error. A numerical example with a proposed mechanism as a driving simulator is presented.
Źródło:
International Journal of Applied Mechanics and Engineering; 2014, 19, 3; 599-608
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal service term of the bridge cranes
Autorzy:
Kovalenko, V.
Vishnevetsky, S.
Brewczyński, D.
Tora, G.
Powiązania:
https://bibliotekanauki.pl/articles/245050.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
bridge cranes
resource
modelling
constructive parameters
Opis:
The questions of the rational/optimal service term of the warehouse bridge cranes on the exploitation and projection stages are observed. The method of the residual crane resource’s definition by the criterion of the specific reduced responses is suggested. On the stage of the crane projection, the forecasting of the warehouse cranes’ resource in coordination with their constructive parameters is expedient. The existing task has main aspects: recognition of the residual crane resource and definition of the project crane resource. In course of time in the massive of the sample from the low carbon steel occur changes: grows firmness, equalize the internal tensions, little internal cracks “overgrow”, sometimes the groups of little cracks create macrocracks. This are a diffusion action. The definition of the rational constructive parameters is being carried out on the base of the work processes’ mathematical modelling. On the base of modelling is defined the size of the residual deflection of the main beam that is formed during one work crane cycle considering the action of the main beams’ free vibrations in the processes of start and braking considering the factor of the attenuation of those vibrations. In result of the modelling, we receive the microscopic size of the residual deflection, formed during one work cycle. On the base of the multisession modelling is noticed that the crane resource can be prolonged on 20-50%.
Źródło:
Journal of KONES; 2013, 20, 4; 169-176
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An evaluation of the impact the Kraków-Szarów A4 motorway section has had on the environment
Ocena wpływu autostrady A4, odcinek Kraków—Szarów na środowisko naturalne
Autorzy:
Michałowski, M.
Gęgotek, G.
Tora, B.
Powiązania:
https://bibliotekanauki.pl/articles/348539.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
motorway
natural environment
air pollution
soil pollution
autostrada
środowisko naturalne
zanieczyszczenie powietrza
zanieczyszczenie gleby
Opis:
The subject of this article is an assessment of the impact the A4 motorway between Kraków and Tarnów has had on the local environment — between the Wielicki and Szarów interchanges. Information related to the characteristics of the motorway are provided as well as solutions which minimize environmental impact such as: acoustic protection, drainage, vibration protection as well as the use of specific types of trees and bushes. The results of the studies on the environmental impact of the motorway are also presented. Atmospheric air was selected as the main factor for the analysis. Four point's best reflecting air pollution were selected and a series of tests were carried out. On the motorway's intersection traffic assessments were carried out, and from these two classes were distinguished: heavy and light and speed achieved. This information was then used to measure concentrations of air pollutants, such as nitrogen monoxide, nitrogen dioxide, sulfur dioxide, particulate matter PM10. A computational method was used to determine to what extent pollution from the motorway was affecting the condition of the air in the neighboring areas. This method was divided into two parts. The first involved the calculation of emissions (model and computer program COPERT III), and then by using metrological data from the area was used to calculate the propagation of these pollutants and determine the levels of emissions at each point on the computational grid (OPERAT 2000). The second factor taken into consideration was soil condition. Soil contamination and limit values, as well as measurements taken were also presented.
Tematem artykułu jest ocena oddziaływania na środowisko autostrady A4 pomiędzy Krakowem a Tarnowem — między węzłem Wielickim a węzłem Szarów. Przedstawiono informacje związane z charakterystyką autostrady, a także opis rozwiązań które minimalizują oddziaływanie na środowisko takich jak: zabezpieczenia akustyczne, urządzenia odwodnienia dróg, zabezpieczenia przeciw wibracjom, opisano także są rodzaje i ilość drzew i krzewów, które zostały posadzone wokół da drogi. Przedstawiono wyniki badań wpływu na środowisko wokół autostrady. Jako główny czynnik do analizy przyjęto powietrze atmosferyczne. Do oceny wybrano 4 punkty najlepiej odzwierciedlające poziom zanieczyszczenia powietrza i na ich podstawie przeprowadzono szereg badań. Na danym odcinku wykonano także pomiary natężenia ruchu z podziałem na dwie klasy: ciężkie i lekkie oraz osiągane prędkości. Informacje te wykorzystane zostały do wykonania pomiarów stężeń zanieczyszczenia powietrza takich jak: tlenek azotu, dwutlenek azotu, dwutlenek siarki, pył zawieszony PM10. Zastosowano metodę obliczeniową wyznaczenia zasięgów oddziaływania zanieczyszczeń komunikacyjnych na stan sanitarny powietrza terenów sąsiednich. Metoda ta sprowadzała się do dwóch etapów. Pierwszy obejmuje obliczenie wielkości emisji zanieczyszczeń (model i program komputerowy COPERT III), a dalej na jej podstawie, wykorzystując dane meteorologiczne z danego rejonu, na zamodelowaniu propagacji tych zanieczyszczeń i wyznaczeniu poziomów imisji w poszczególnych punktach zadanej siatki obliczeniowej (program OPERAT 2000). Drugim czynnikiem branym pod uwagę w ocenie oddziaływania na środowisko była gleba. Przedstawiono podstawowe wskaźniki zanieczyszczenia gleb wraz z dopuszczalnymi wartościami oraz opis wykonanych pomiarów.
Źródło:
AGH Journal of Mining and Geoengineering; 2013, 37, 2; 43-51
1732-6702
Pojawia się w:
AGH Journal of Mining and Geoengineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-14 z 14

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