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Wyświetlanie 1-50 z 3986
Tytuł:
Airbase as Defended Asset for Air Defense
Autorzy:
KOŁATA, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/466225.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
air defense
air base
air threats
Opis:
Lessons learnt during recent wars and conflicts indicate that the pivotal precondition for success is neutralization of aviation in the initial period of conflict. Eliminating aviation from combat allows us to gain advantage (superiority) in the air and provides convenient conditions for the conduct of combat activities by one’s own forces. One of the ways to achieve this objective is to destroy air bases with their aircraft, security potential and infrastructure, which is necessary for their operation and proper functioning. Under these conditions, air defense of the air base becomes particularly important. The complexity of the problem stems from the increased possibility of impact from the air and the significance of the air base in aviation operations. That is why it is worth looking at the air base from the point of view of air defense.
Źródło:
Safety & Defense; 2019, 5, 1; 37-45
2450-551X
Pojawia się w:
Safety & Defense
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolution of the Aerial Defence of Air Bases : Concepts and Lessons Learned
Autorzy:
Kołata, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/93303.pdf
Data publikacji:
2019
Wydawca:
Akademia Sztuki Wojennej
Tematy:
air defence
air superiority
military air base
Opis:
The lessons learned during wars and armed conflicts indicate that the main factor influencing the aerial defence of air bases were directly related to the rapid development of the combat capabilities of aerial threats. Air bases have been lucrative targets for enemy air strikes since the first documented attack by a British aircraft on a German airfield in 1914 and have remained so for contemporary military air operations. The article discusses the evolution of concepts and lessons learned in the field of aerial defence of air bases that resulted from armed conflicts and local wars. The analysis includes armed conflicts, which, according to the author, have reflected the changes in the organisation of the aerial defence of air bases, including the repulsion of air strikes against aviation on the ground. Attention was paid to the conditions related to the aerial defence of aviation on the ground during the First World War. A more thorough analysis was made of the Second World War period, focused on the Western Front and the defence of Poland. Particular attention was paid to the Battle of Britain, noting the importance of the organisation of the radar air surveillance system in the context of the effectiveness of air defence. The focus of the analysis then shifts to the aerial defence of air bases during armed conflicts after the Second World War: the Vietnam War (1965-1973), the Yom Kippur War (1973), the defence of air bases in the Yom Kippur War (1973), and NATO operations from the air against air bases during the Deny Flight / Deliberate Force (1992-1995) and Allied Force (1999) operations. The article also makes a preliminary assessment of the aerial defence of air bases during the ongoing conflict in Syria.
Źródło:
Zeszyty Naukowe Akademii Sztuki Wojennej; 2019, 1(114); 53-74
2543-6937
Pojawia się w:
Zeszyty Naukowe Akademii Sztuki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected Aspects of Contemporary Air Threats
Autorzy:
Kulik, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/930354.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
air threats
air safety
air assault assets
safety
Opis:
One of the factors affecting the security of a state is air threats. Their nature often exerts a negative impact on both the functioning of the state and using airspace. The purpose of this article is to define the term of air threats and characterize contemporary air threats, illustrated with numerous examples. The scientific deliberations lead to outlining possible development trends in this respect, in relation to technological progress. The article ends with several concluding statements with regard to an analysis of prospective air threats. It also shows possible development trends in the discussed matter. The final part of the article is devoted to conclusions regarding the transformation of contemporary air threats.
Źródło:
Safety & Defense; 2020, 1; 11-21
2450-551X
Pojawia się w:
Safety & Defense
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of intensity of charge air intercooling on diesel engine gas
Autorzy:
Hlavńa, V.
Kovalčik, A.
Krakovsky, J.
Labuda, R.
Powiązania:
https://bibliotekanauki.pl/articles/242117.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
air intercooling
two-stage charge air intercooling
lower temperatures
air-to-air intercooler
water-air intercooler
Opis:
The intercooling of charge air is one way of possible arrangements done while preparing fuel for diesel engines with the objective of lowering the environmental load. Such intercooling has other positive effects, e.g. the output increase, decrease in the maximal temperature of engine working cycle, decrease in thermal load of functional parts in the combustion space. Coolers of different constructions and versions are used for the charge air intercooling. As we have already presented in conferences and professional journals, we have been engaged in basic research into the non-conventional energetic system with the cooling combustion engine (the engine cooling circle is the ejector of absorption cooling). The obtained cold can be used for different purposes, e.g. for air conditioning of the maintenance room, cooling of goods storage space in trucks and also for more intensive intercooling of the charge air. Simultaneously with the mentioned topics we have been partially dealing with the influence of more intensive intercooling on the engine ecological parameters. We have presented some results of mathematical modelling connected with the mentioned topic. The paper is a continuation of previous publications and focuses on results of the experiment observing a two-stage charge air intercooling to lower temperatures. The air-to-air cooler was used as the first intercooling stage while the second stage was performed by means of the water-air intercooler.
Źródło:
Journal of KONES; 2011, 18, 2; 177-184
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contemporary threats to the state air defence system
Autorzy:
Radomyski, Adam
Materak, Witold
Powiązania:
https://bibliotekanauki.pl/articles/576135.pdf
Data publikacji:
2016-06-30
Wydawca:
Akademia Sztuki Wojennej
Tematy:
air defence
air defence systems
fighter aircraft
ballistic missiles
air threats
air terrorism
Opis:
The contents of this article are focused on presenting the results of research concerning development of the means of air threat as a major determinant of changes in the modernisation of the air defence system in Poland. In this regard, the authors emphasise the role and means of air threat as a kind of pacemaker development of air defence systems. In this article, the main area of scientific considerations are technical and tactical aspects concerned with the evolution of manned and unmanned aircraft. The directions of their development of combat capabilities and an estimate of their use in contemporary and future battlefields against military objectives and non-military ones are covered. The article has high educational value and highlights future threats to the state air defence system and development trends in the twenty-first century.
Źródło:
Security and Defence Quarterly; 2016, 11, 2; 45-69
2300-8741
2544-994X
Pojawia się w:
Security and Defence Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of air purification methods in urban open spaces
Autorzy:
Rusowicz, Artur
Grzebielec, Andrzej
Ruciński, Adam
Niewiński, Grzegorz
Laskowski, Rafał
Jaworski, Maciej
Mielewczyk, Wojciech
Całun-Nadulski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/132035.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
air pollution
air purification
air purification in public space
Opis:
Cities, but also villages around the world, are struggling with air pollution that can lead to illness and even death of citizens. This phenomenon causes that many local governments are going to build an air purification installations in public spaces. The article presents an analysis of air quality in the center of Polish cietes like Warsaw, Krakow and Zakopane for PM10 and PM2.5 dusts in December 2018. There are proposed ways to improve the air quality in open urban spaces.
Źródło:
Modern Engineering; 2019, 3; 103-108
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problemy ze smogiem w Europie – wspólny raport o jakości powietrza
Problems with Smog in Europe – Joint Report on Air Quality
Autorzy:
Dudek, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/416790.pdf
Data publikacji:
2019-06
Wydawca:
Najwyższa Izba Kontroli
Tematy:
air quality
pollution
smog
air protection
air quality report
Opis:
Air pollution is the reason for huge damages to European Union citizens’ health. Every year, some 400,000 Europeans die prematurely as a result of excessive levels of such substances as suspended dust, nitrogen dioxide and ozone. It is despite the fact that the EU legal regulations on the permissible values of air pollutants have been in force for almost thirty years. In order to broaden the knowledge of air pollution as well as the ways to implement and the effectiveness of the policy on air protection in individual Member States, the Supreme Audit Office and the Netherlands Court of Audit coordinated the largest international audit in the field of environmental protection in the history of the European Organisation of Supreme Audit Institutions – EUROSAI. The audit resulted in a joint audit report on air quality, based on the findings of the audits conducted in the countries that participated in this project.
Źródło:
Kontrola Państwowa; 2019, 64, 3 (386); 51-57
0452-5027
Pojawia się w:
Kontrola Państwowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The National Air Pollution Control Programme in Poland – Selected Legal Issues
Autorzy:
Radecka, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/915225.pdf
Data publikacji:
2020
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
air
air protection
nec directive
Opis:
The article focuses on Poland’s obligations arising from Article 6 of the Directive (EU) 2016/2284 of the European Parliament and of the Council of 14 December 2016 on the reduction of national emissions of certain atmospheric pollutants, amending Directive 2003/35/EC and repealing Directive 2001/81/EC[1]. The objective of the article is to present legal solutions adopted in the National Air Pollution Control Programme (further referred to as the NAPCP) in Poland. This is preceded by an analysis of this document in the context of other legal instruments for environmental protection, and an evaluation of its effectiveness.
Niniejszy artykuł skupia się na wskazaniu zobowiązań Polski wynikających z art. 6 dyrektywy Parlamentu Europejskiego i Rady (UE) 2016/2284 z dnia 14 grudnia 2016 r. w sprawie redukcji krajowych emisji niektórych rodzajów zanieczyszczeń atmosferycznych, zmiany dyrektywy 2003/35/WE oraz uchylenia dyrektywy 2001/81/WE[1]. Celem niniejszego artykułu jest zaprezentowanie rozwiązań prawnych przyjętych w krajowym programie ograniczania zanieczyszczeń powietrza (dalej: KPOZP) w Polsce, z wcześniejszym umiejscowieniem tego dokumentu na tle innych prawnych instrumentów ochrony powietrza, oraz ocena jego skuteczności.
Źródło:
Review of European and Comparative Law; 2020, 40, 1; 7-23
2545-384X
Pojawia się w:
Review of European and Comparative Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Russia’s and NATO’s use of air power in comparison: what is to be expected?
Autorzy:
Grimshaw, Steven
Powiązania:
https://bibliotekanauki.pl/articles/534410.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Biznesu w Dąbrowie Górniczej
Tematy:
Air power
Russian air force
NATO air power
Future warfare.
Opis:
This research analyses the Russian approach to the use of air power supporting direct subordination to ground forces in comparison with NATO’s approach of an independent component directly conducting the military objective through deep air operations. By drawing upon mostly open sources, this paper sheds light on possible advantages and limitations of both sides’ peculiar approaches in regards to possible future military encounters. Despite taking NATO’s evolution of air power into account, it becomes clear that the Russian military air forces cannot fully adapt in the near future due to mainly historical, economic, technological and geopolitical factors. Therefore, Russia’s air forces are rather unbalanced and incapable of applying the full potential of air power. Through analysing the origins and emphasising further implications as to future development, this research highlights the importance for NATO to focus more on achieving and maintaining air superiority including exploitation of its clear advantage in long-range aviation.
Źródło:
Security Forum; 2017, 1, Volume 1 No. 1/2017; 123-136
2544-1809
Pojawia się w:
Security Forum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ochrona powietrza przed zanieczyszczeniami – dlaczego w Polsce nie można odetchnąć pełną piersią?
Protection of Air against Pollution – Why Cannot We Get a Breath of Fresh Air in Poland?
Autorzy:
Pankowska, Marta
Gorczyca, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/417242.pdf
Data publikacji:
2015-06
Wydawca:
Najwyższa Izba Kontroli
Tematy:
quality of the air
air pollution
air protection programmes
pollutants
Opis:
At the time when Poland joined the European Union, the quality of the air in the country was far from the European standards. At the moment, the level of certain pollutants in the air is still high, which may result in legal proceedings of the European Union bodies against Poland, and consequent substantial financial charges. What is worse, it is estimated that as many as 45,000 Poles die every year due to air pollution. That is why NIK has decided to conduct an audit aimed at evaluating the activities of public entities undertaken with a view to improving the quality and protection of the air in the period between the year 2008 and the first half of the year 2014. The audit covered: the functioning of air monitoring, the development of air protection programmes by individual bodies of regional self-governments and the performance of tasks set out in these programs by competent self-government bodies, the financing of tasks related to air protection by regional funds for environmental protection and water management, as well as the coordination of activities and cooperation of organisational units with regard to the implementation of protection related measures. The audit was carried out in five regions (Małopolskie, Mazowieckie, Opolskie, Pomorskie and Śląskie), and it covered 25 auditees.
Źródło:
Kontrola Państwowa; 2015, 60, 3 (362); 60-78
0452-5027
Pojawia się w:
Kontrola Państwowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnosis of three types damages to the ventilation system
Autorzy:
Voznyak, Orest
Spodyniuk, Nadiia
Sukholova, Iryna
Savchenko, Olena
Kasynets, Mariana
Datsko, Oleksandra
Powiązania:
https://bibliotekanauki.pl/articles/2096172.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
air distribution
air velocity
swirled air jet
compact air jet
flat air jet
dystrybucja powietrza
prędkość powietrza
system wentylacyjny
diagnostyka
Opis:
The article is devoted to solving of urgent problem to eliminate damage in ventilation system. That is caused by non-adequate long range, stagnant unventilated areas in the room existance and high noise level in the premises at air distribution by swirled air flow, compact air jet, flat air stream and rectangular air jet. A noise level of air supply with swirled air flow, compact air jet, flat air jet and rectangular air stream in the room has been investigated. It is shown that in order to achieve the maximum noise level decreasing it is necessary to ensure its supply by jets, which less intensively attenuate before entering the premise working area. Results of the experimental research are presented as graphical and analytical dependences. The acoustic properties of the swirled air flow, compact air jet, flat air stream and rectangular air jet have been investigated and means of situation improving have been determined. The results of experimental research of air supply to the room are presented. It is established that with the increase of the angle of swirling plates inclination and ratio of the slit sides the air jets noise level decreases.
Źródło:
Diagnostyka; 2022, 23, 1; 1--10
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warunki termiczne a stężenie pyłu zawieszonego w powietrzu atmosferycznym zimą w wybranych miastach Polski
Thermal conditions and concentration of particulate matter in atmospheric air in winter in selected Polish cities
Autorzy:
Rawicki, K.
Powiązania:
https://bibliotekanauki.pl/articles/134837.pdf
Data publikacji:
2016
Wydawca:
ADVSEO
Tematy:
PM10
air temperature
air pollution
Opis:
The aim of the study was to assess the impact of thermal conditions on emission of PM10 in the atmosphere during the winter period in selected Polish cities. The basis of the work were average daily PM10 and air temperature measurement results, which were made in six cities during three of calendar winters (December-February) in 2011–2014. It has been shown that every decrease in temperature during the winter affects the increase in the concentration of PM10 in ambient air in most of the analyzed cities. The greatest role of air temperature in shaping emission of the fraction of particulate matter variability was found in a relatively cool winter 2011/2012, when the number of days with oversize levels of contamination ranged from 7 in Suwałki to even 46 in Nowy Sącz. The smallest impact of this weather element was found during a warm winter 2013/2014.
Źródło:
Technical Issues; 2016, 1; 59-65
2392-3954
Pojawia się w:
Technical Issues
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aerodynamic interference between pusher propeller slipstream and an airframe : literature review
Autorzy:
Ruchała, P.
Powiązania:
https://bibliotekanauki.pl/articles/246710.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
air transport
air propulsion
pusher propeller
Opis:
In the article, an aerodynamic interference between pusher propeller slipstream and the airframe of the aircraft powered by it has been presented, based on a literature study. A pusher propeller is one of popular types of the airplane propulsion. It is applied mainly in light sport aircrafts, in the UAVs (Unmanned Aerial Vehicles), unorthodox vehicles, like compound helicopters, canard and joined wing aircrafts etc. The main advantage of pusher propeller is that the engine with the pusher propeller does not affect the visibility from the cockpit and allows placing an electronic equipment in the front part of the UAV’s fuselage. Furthermore, reduced cabin noise and increase in stability due to acting normal force aft of the centre of gravity are other benefits of this configuration. The pusher propeller impact on the airframe, especially on the wing, is qualitatively different from the tractor configuration. Main differences between both propulsions has been discussed, as well as aerodynamic benefits of the pusher propeller – like reduction of separated flow area and extending area of laminar boundary layer. However, an application of pusher propeller may have also negative impact, especially lower performance than tractor propeller. In the article the reasons of this suppression has been briefly discussed.
Źródło:
Journal of KONES; 2017, 24, 3; 237-244
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of thermal comfort in a lecture hall with the application of instruments for computational fluid dynamics
Autorzy:
Skotnicka-Siepsiak, A.
Powiązania:
https://bibliotekanauki.pl/articles/950453.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
thermal comfort
air division
air conditioning
Opis:
The examinations presented in this article aim at illustrating some possibilities of applying instruments for computational fluid dynamics to assess thermal comfort on the example of a lecture hall in the building of the Institute of Building Engineering at the University of Warmia and Mazury in Olsztyn. The obtained results have been subjected to an analysis according to the guidelines provided in the PN-EN ISO 7730:2006 norm. For the air heating system used in the hall, the distributions of velocity, temperature, as well as the PMV and PDD indices have been subjected to an analysis, with a particular focus on the optimal temperature of the air inflow.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2016, 19(1); 41-58
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Daily oscillations of the air temperature in selected coniferous communities in the Borecka Forest
Autorzy:
Pietras, Katarzyna
Mikulska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2030278.pdf
Data publikacji:
2008-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
air temperature
amplitude
maximal air temperature
minimal air temperature
local climate
Opis:
Two coniferous forest communities were selected for analysis: a marshy coniferous forest and a young spruce forest, both located in the Borecka Forest. Thermal conditions develop differently in each community during the spring, due to different tree crown closure, which influences the amount of direct solar radiation reaching the substratum. Soil humidity is another factor influencing the air temperature, since the capacity and thermal inertia of the soil depend on its humidity. The results of the study are compared with thermal conditions outside the forest.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2008, 13; 113-120
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air aerosol sampling station AZA-1000 at Polish Polar Station in Hornsund, Spitsbergen
Autorzy:
Mysłek-Laurikainen, B.
Matul, M.
Mikołajewski, S.
Trzaskowska, H.
Preibisz, Z.
Garanty, I.
Kubicki, M.
Rakowski, P.
Krynicki, T.
Stefański, M.
Powiązania:
https://bibliotekanauki.pl/articles/148535.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
air sampling
radioactive aerosols
radioactive air pollution
radionuclides
polar air monitoring
Opis:
The high volume air sampler AZA-1000 was built in the Environmental Protection Laboratory of the Andrzej Sołtan Institute for Nuclear Studies. In July 2002, this air sampler AZA-1000 was installed in the Polish Polar Observatory of the Polish Academy of Science in Hornsund, Spitsbergen. The device was built with numerous specific features which make possible to operate such station in extra difficult climatic conditions of polar region. Since July 2002, radioactive aerosols were collected at the Petrianov filter tissue FPP-15-1.5 and measured using high resolution g spectrometry in the Environmental Protection Laboratory at Świerk. The concentration of the airborn, cosmogenic radionuclide 7Be and of other natural and man maid radionuclides like 137Cs was determined. A comparison of the preliminary results with those from the ASS-500 sampling station operating at Świder is presented.
Źródło:
Nukleonika; 2006, 51, 2; 137-140
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ochrona powietrza przed zanieczyszczeniami – dotychczasowe działania nie dają pożądanej poprawy
Protecting Air Against Pollution – Previous actions do not bring a desired improvement
Autorzy:
Gorczyca, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/416451.pdf
Data publikacji:
2019-04
Wydawca:
Najwyższa Izba Kontroli
Tematy:
air protection
air pollution
air protection system
solid fuels
air quality plan
particulate matter
benzo(a)pyrene
Opis:
The article presents the findings of the audit related to prevention of water pollution with nitrate compounds coming from farms. The audit was conducted at the initiative of NIK and was a continuation of NIK’s attempts to assess the extent to which Poland complied with the obligations related to environmental protection, stemming from our accession to the European Union. The audit was dedicated to such issues as, among others, mapping waters that are sensitive to pollution with nitrate compounds coming from farms, and the areas that are most threatened with this risk; the programmes aimed at limiting the outflow of nitrate compounds from farming – with regard to their contents and implementation; the supervision and control over the activities related to preventing waters form pollution with nitrates and their effectiveness; as well as the measures aimed at providing financial support to farms for having them comply with the requirements of the nitrate directive.
Źródło:
Kontrola Państwowa; 2019, 64, 2 (385); 123-138
0452-5027
Pojawia się w:
Kontrola Państwowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contemporary Air Freight Transport Market
Autorzy:
Wąsowska, Katarzyna
Nowak, Iwo
Powiązania:
https://bibliotekanauki.pl/articles/503702.pdf
Data publikacji:
2018
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
air freight transport
global air cargo services
air transport market
market analysis
Opis:
The worldwide air freight transport is seen mostly from the angle of long-distance passenger flights. Given that, one often tends to forget the role of this transport branch in the case of commodity transport. Air freight transport is a booming branch with great development potential. This, however, is related to considerable experience and knowledge, on the part of both the carrier and the owner of goods, with regards to technical capacities of a given aircraft, maintenance costs, and rule awareness. The objective of the study is to analyse the global market of air freight transport. In view of the vast scope of the subject, the issues were presented, to a large extent, on the basis of existing airports.
Źródło:
Logistics and Transport; 2018, 37, 1; 113-120
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Legal aspects of air protection in Poland and Europe
Autorzy:
Szatyłowicz, Ewa
Szatyłowicz, Sebastian
Powiązania:
https://bibliotekanauki.pl/chapters/31234002.pdf
Data publikacji:
2020
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
air protection
law
Polska
Europe
air pollution
Opis:
The issue of air protection is a topic discussed in many scientific publications. How much air people breathe also largely depends on themselves. Therefore, there is a need for legal regulation as well as other instruments, such as people’s awareness for the state of air in Poland to systematically improve. Despite the reduction in pollutant emissions, air quality is still not good enough. The European Environment Agency estimates that several hundred thousand people die prematurely every year due to air pollution in Europe. The norms and standards imposed by legal instruments play a huge role in improving the air quality. These guidelines are based on scientific evidence of the health effects of air pollution, and standards, which are in most cases legally binding, must consider technical feasibility and the costs and benefits of a compliance. The paper analyzes the most important legal regulations concerning the air protection in Poland and Europe, concerning emission of pollutants into the air as a result of burning the solid fuels and in the transport sector.
Źródło:
Innovations – Sustainability – Modernity – Openness. Energy; 77-85
9788366391291
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
AIR FREIGHT TRANSPORT IN POLAND
Autorzy:
Wąsowska, Katarzyna
Žukovskis, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1818407.pdf
Data publikacji:
2020-04-10
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
freight
air transport
air cargo
freight transport
Opis:
Air transport is currently one of the major branches of transport both in the national – and global – economies. It is one of the fastest, most expensive, but at the same time also most effective types of transportation. It plays a fundamental role in the global economy, particularly in the transcontinental carriage of goods and passengers. Its availability and quality constitute a powerful driving force for a country’s development. Air freight transport, both in Poland and worldwide, is seen mostly from the angle of long-distance passenger flights. Given that, one often tends to forget the role of this transport branch in the case of freight transport. Air cargo transport is a booming branch with great development potential. The development of air freight is the key for gaining a competitive advantage by Polish enterprises. This, however, is related to considerable experience and knowledge on the part of both the carrier and the owner of goods with regards to the technical capacities of a given aircraft, maintenance costs, and rule awareness. The objective of the paper is to present the volumes of air cargo shipments in Poland and to identify the hazards and obstacles to its development. The study authors endeavour to analyse air freight transport in Poland. To this end, details will be presented regarding air cargo transport at Polish airports based on the Civil Aviation Authority (ULC) and Central Statistical Office (GUS) data and air market reports.
Źródło:
Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach; 2019, 50, 123; 65-72
2082-5501
Pojawia się w:
Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examining technical solutions for a prototype of a solar-air collector
Autorzy:
Leśny, J.
Panfil, M.
Urbaniak, M
Schefke, R.
Powiązania:
https://bibliotekanauki.pl/articles/298008.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
solar air collector
air humidity
evaporation potential
Opis:
The research was conducted in the framework of the project known as „Coupon for innovations - support for the smallest companies”, endorsed by the Polish Agency for the Development of Business, and it had the following objectives: to assess the efficiency of the collector and reliability of the applied parameters such as the force of warm air blast, temperature increase depending on the intensity of solar radiation and the angle of the collector setup, influence of ambient temperature on the collector’s efficiency and heat loss, the quantity of relative humidity reduction correlative with the heating up of the flowing air. Collector in a standard installation position - on a vertical wall. The assessed solar air collector was exposed to solar radiation and the following parameters were measured in the course of study: intensity of solar radiation falling on a vertical surface and on the collector’s surface (the collector was installed in vertical position, which is a standard installation method), temperature and velocity of air flowing into the collector as well as temperature and velocity of air flowing out of the device. The studies indicate that already at the radiation value of 100 W m-2 the collector worked efficiently and heated up the flowing air by about 5oC. This temperature increased together with radiation and reached the value of 20oC at the radiation of 800 W m-2. The analysis of the collector’s efficiency showed that during its work (proper temperature and radiation) the efficiency remained at a satisfactory level from 42 to 46%.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(2); 125-135
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnosis of damage to the ventilation system
Autorzy:
Voznyak, Orest
Spodyniuk, Nadiia
Sukholova, Iryna
Dovbush, Oleksandr
Kasynets, Mariana
Datsko, Oleksandra
Powiązania:
https://bibliotekanauki.pl/articles/1840850.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
air distribution
damages
swirled air jet
compact air jet
flat air jet
dystrybucja powietrza
uszkodzenie
strumień powietrza
system wentylacyjny
Opis:
The article is devoted to solving of urgent problem to eliminate damages of two types in ventilation systems for air distribution efficiency increasing in the premises by swirled air flow, compact air jet, flat air stream and rectangular air jet. A mathematical model of air supply with swirled air flow, compact air jet, flat air jet and rectangular air stream in the room has been developed. It is shown that in order to achieve the maximum efficiency of air distribution it is necessary to ensure its supply by jets. Graphical and analytical dependences on the basis of the conducted experimental research are presented. Parameters of swirled air flow, compact air jet, flat air stream and rectangular air jet during the formation of a comfortable indoor climate are determined. The results of experimental studies of air supply to the room by the air distribution devices, which form a swirled air flow, compact air stream, flat air flow and rectangular air jet with adequate turbulence and long range of the supply air flow, are presented. It is established that with the increase of the angle of swirling plates inclination and ratio of the slit sides the air jets long range increases.
Źródło:
Diagnostyka; 2021, 22, 3; 91-99
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnosis of damage to the ventilation system
Autorzy:
Voznyak, Orest
Spodyniuk, Nadiia
Sukholova, Iryna
Dovbush, Oleksandr
Kasynets, Mariana
Datsko, Oleksandra
Powiązania:
https://bibliotekanauki.pl/articles/1840873.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
air distribution
damages
swirled air jet
compact air jet
flat air jet
dystrybucja powietrza
uszkodzenie
strumień powietrza
system wentylacyjny
Opis:
The article is devoted to solving of urgent problem to eliminate damages of two types in ventilation systems for air distribution efficiency increasing in the premises by swirled air flow, compact air jet, flat air stream and rectangular air jet. A mathematical model of air supply with swirled air flow, compact air jet, flat air jet and rectangular air stream in the room has been developed. It is shown that in order to achieve the maximum efficiency of air distribution it is necessary to ensure its supply by jets. Graphical and analytical dependences on the basis of the conducted experimental research are presented. Parameters of swirled air flow, compact air jet, flat air stream and rectangular air jet during the formation of a comfortable indoor climate are determined. The results of experimental studies of air supply to the room by the air distribution devices, which form a swirled air flow, compact air stream, flat air flow and rectangular air jet with adequate turbulence and long range of the supply air flow, are presented. It is established that with the increase of the angle of swirling plates inclination and ratio of the slit sides the air jets long range increases.
Źródło:
Diagnostyka; 2021, 22, 3; 91-99
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variations in weather on the East and West coasts of South Spitsbergen, Svalbard
Autorzy:
Maciejowski, Wojciech
Michniewski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2051847.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
air temperature
air humidity
foehn effects
Źródło:
Polish Polar Research; 2007, 2; 123-136
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The application of ant algorithm in the assignment problem of aircrafts to stops points on the apron
Autorzy:
Gołda, P.
Izdebski, M.
Szczepański, E.
Powiązania:
https://bibliotekanauki.pl/articles/245325.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
air transportation
air traffic control
aircraft operation
airport
Opis:
The article refers to the problem of assigning the aircrafts to stops points on the apron. The aim of this paper is to develop the algorithm, which will be used to this assignment. The assignment problem of aircrafts to stops points is the complex decision problems, which refer to the problems of designating the minimal path in the graph. The assignment model was described, i.e. decision variables, constraints and the criterion function. Decision variables take the binary form and determine the connections between the elements of infrastructure of the apron, i.e. touchdown points, intermediate points and stop points. Constraints take into account the number of aircrafts in the given period, the number of unoccupied stop points. The criterion function determines the minimum driving time of the aircraft on the apron. In order to designate the routes in international transport the heuristic algorithm, i.e. ant algorithm was developed. The steps of building this algorithm were presented. This algorithm was verified in the C# programming language. The results generating by the presented algorithm were compared with the results generating by the random algorithm.
Źródło:
Journal of KONES; 2018, 25, 4; 479-487
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wojskowy nadzór w sojuszniczej przestrzeni powietrznej Misje Air Policing
Military surveillance of allied airspace Air Policing Missions
Autorzy:
Rurak, Adam
Gągała, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/565854.pdf
Data publikacji:
2017
Wydawca:
Akademia Sztuki Wojennej
Tematy:
NATO
NATINAMDS
Air Policing
Baltic Air Policing
RENEGADE
Opis:
The paper discusses the purpose and implementation of the Air Policing missions, i.e. military surveillance of allied airspace. The authors present the basis of collective defence as described in Article 5 of the Washington Treaty as well as the main tasks of the NATO Integrated Air and Missile Defence System. In addition, existing procedures of emergency response in case of violation of the Polish airspace by civil or military aircraft are presented.
Źródło:
Obronność – Zeszyty Naukowe Wydziału Zarządzania i Dowodzenia Akademii Sztuki Wojennej; 2017, 4(24); 15
2084-7297
Pojawia się w:
Obronność – Zeszyty Naukowe Wydziału Zarządzania i Dowodzenia Akademii Sztuki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An empirical study of air transport demand forecast in Nigeria
Autorzy:
Nwaogbe, Obioma R.
Monday, Adebayo
Wokili-Yakubu, Huwa
Powiązania:
https://bibliotekanauki.pl/articles/2204248.pdf
Data publikacji:
2023
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
air travel demand
air transport
airfare
passenger
sustainability
Opis:
The study aims to estimate the air travel demand forecast for domestic passengers' travels in Nigeria from 2002-2016. Data resourced from the Central Bank of Nigeria, the National Bureau of Statistics, and the Federal Airport Authority of Nigeria. The study utilized a multiple regression model using a Stata-Graphic software solver to analyze the data. From the analysis, the result shows that there is a significant relationship between the explanatory variable (passengers) and unexplanatory variables National Disposable Income, Population, Average Airfare, Gross Domestic Product, Exchange Rate, Total Expenditure, and Crude oil price, accounted for adjusted R of 93.624% relationship with demand for domestic air travel of passenger. The R-square statistic shows that the fitted model explains the variability in the number of passengers (NPAX), which is 96.8124%. The Hypothesis testing reveals that National Disposable Income and Airfare have a strong statistically significant relationship with the demand for domestic air travel with a P-value of 0.0013. Mores, a statistically significant relationship exists between National Disposable Income, Average airfare, and Crude oil price with P-values of 0.0017 and 0.0445, respectively. Furthermore, a forecast of the number of passengers and average airfare was carried out using ARIMA (1,0,0) model, which made available the future predicted values for the number of passenger movements and average airfare for the next 10-12 years to come. Thus, the study recommends that stakeholders in the air transport sector should work towards improving the capacity and infrastructure to accommodate the growth of air travel demand for domestic air travel in Nigeria. Policy implications were made on regulating the sector by having a good pricing policy to control the air fare for the industry.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2023, 8, 1; 6--23
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Idoor Air Quality with Particular Reference to Carbon Monoxide in the Room – A Pilot Study
Autorzy:
Wiater, Józefa
Gładyszewska-Fiedoruk, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2105291.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
air pollution
carbon monoxide
smoking cigarettes
air quality
Opis:
Cigarette smoking are the most important reasons for increased carbon monoxide (CO) level in exhaled air. During the experiment, the CO level in indoor air in room was measured. Outdoor air quality data including atmospheric CO concentration, obtained from the own measured and data from the weather platform “freemeteo”. The measurements were carried out with the following variants: outside air, a room ventilated without people, nonsmokers, smokers and non-smoking people, smokers entering the room after smoking cigarettes, smokers who smoke in the room. As proven by measurements, carbon monoxide carried in the lungs by smokers has low concentrations and should not threaten the health of non-smoking users of rooms. The maximum concentration of carbon monoxide in the room was 1.4 ppm. In the external air, the average concentration of carbon monoxide was exactly as much as reported in the literature – 0.3 ppm.
Źródło:
Journal of Ecological Engineering; 2022, 23, 6; 286--293
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kształtowanie bezpieczeństwa powietrznego jako integralnego elementu obronności państwa
Shaping of air security as an integral element of state’s defense system
Autorzy:
Radomyski, A.
Powiązania:
https://bibliotekanauki.pl/articles/98656.pdf
Data publikacji:
2017
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
zagrożenie powietrzne
bezpieczeństwo
obrona powietrzna
misja Air Policing
Air Policing
infrastruktura krytyczna
terroryzm lotniczy
Airspace
security
air defense
Air Policing mission
critical infrastructure
air terrorism
Opis:
W artykule przedstawiono wyniki badań, koncentrujące się na kwestiach związanych z zagrożeniem powietrzem państwa, w tym infrastruktury krytycznej i ludności cywilnej w czasach pokoju, kryzysu i wojny. Treści przedstawione w pierwszej części artykułu koncentrują się na zasadniczych aspektach prawnych i organizacyjnych, które determinują funkcjonowanie systemu obrony powietrznej jako zasadniczego elementu państwa w walce z wojskowymi i cywilnymi statkami powietrznymi w czasach pokoju, kryzysu i wojny. W drugiej części artykuł przedstawia zasadnicze aspekty zjawiska terroryzmu lotniczego oraz ogólne cechy sił, które są szczególnie predysponowane do zwalczania różnego rodzaju zagrożeń powietrznych. Ważnym zagadnieniem analizowanym w artykule było podkreślenie znaczenia właściwej współpracy pomiędzy elementami sił zbrojnych a instytucjami pozamilitarnymi, co ma zasadnicze znaczenie dla zapewnienia skutecznej ochrony i ochrony przestrzeni powietrznej państwa. Artykuł opisuje również warunki używania sił powietrznych w celu ochrony przestrzeni powietrznej innych państw NATO w ramach sojuszniczych zobowiązań przyjętych przez Polskę w ramach Smart Defence.
The paper presents research findings focusing on issues related to the threat to the state air, including critical infrastructure and civilian population in times of peace, crisis and war. In the first part of the article, the content of the article focuses on the essential legal and organizational aspects that determine the functioning of the air defense system as an essential element of the state in the fight against military and civil aircraft in times of peace, crisis and war. In the second part the article presents the essential aspects of aviation terrorism and the general features of forces that are particularly predisposed to combat various types of air threats. An important issue examined in the paper was to emphasize the importance of proper cooperation between the elements of the armed forces and non-military institutions, which is essential to ensure the effective protection and protection of the airspace of the state. The article also describes the conditions for using air forces to protect the airspace of other NATO countries within the framework of Poland’s allied commitments under Smart Defense.
Źródło:
Przegląd Nauk o Obronności; 2017, 2, 3; 95-118
2450-6869
Pojawia się w:
Przegląd Nauk o Obronności
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survey of indoor air pollution and health symptoms at residential buildings
Autorzy:
Sarkar, S.
Nandy, A.
Talapatra, S.N.
Basu, R.
Mukhopadhyay, A.
Powiązania:
https://bibliotekanauki.pl/articles/11531.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
indoor air
air pollution
air pollutant
household product
human health
hazard symptom
residential building
Opis:
This survey work summarizes the generation of indoor air pollutants (IAPs) through household products and activities and also the probable health symptoms of IAPs were discussed through questionnaire in the residential buildings of urban and semi urban area when compared to rural (control) area by door to door survey. The IAPs are categorized as physical, chemical and biological and surveyed as per the product(s) usage in the closed room of buildings. The survey results of IAPs generated from household products and activities, these are asbestos, fine particulate matters and ash as physical pollutants. The chemical pollutants are carbon mono and di oxide gases, phthalates; DDT, chlordane, heptachlor, o-phenylphenol; PBDEs, Formaldehyde, Other Aldehydes, lead, benzene, chloroform, para-dichlorobenzene, methylene chloride, perchloroethylene, styrene, benzene, formaldehyde, terpenes, styrene, phthalate esters, toluene, Propellant, pesticides, PAH, NOx, acrylamide, VOCs, acetone, HCl gas and biological pollutants are bacteria, fungi, viruses, house dust mites, animal dander; cockroaches, microbial spore. In respect to established health impact data, the health symptoms were recorded after survey in two areas viz. urban and semi urban area. The health symptoms were recorded as eye, nose, and throat irritation; allergic reactions, respiratory irritation, aggravated asthma, influenza and other infectious diseases may be the generation of IAPs. The urban and semi urban area are compared with rural (control) area in which no symptoms were found as per discussion. In the present survey it was concluded that the generation of IAPs may from household products and activities in the urban and semi urban area due to less ventilation facilities when compared to rural (control) area. This is a preliminary observation, further researches are needed in relation to measurement of physical, chemical and biological indoor pollutants in closed room of residential buildings and also health hazards study of residents by haematological, biochemical, enzymological and genotoxicological parameters.
Źródło:
International Letters of Natural Sciences; 2014, 08, 1
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja budowy stanowiska do badania parametrów sprężonego powietrza
A concept of construction of the stand for testing compressed air parameters
Autorzy:
Perz, K.
Powiązania:
https://bibliotekanauki.pl/articles/290483.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
sprężone powietrze
uzdatnianie powietrza
optymalizacja
parametry
compressed air
air treatment
optimization
compressed air parameters
Opis:
Sprężone powietrze znalazło szerokie zastosowanie w przemyśle spożywczym. Jest bardzo często postrzegane jako tanie, a nawet darmowe, źródło energii. Nic bardziej błędnego. Liczne badania potwierdzają, że przemysł wykorzystuje tylko około 30% produkowanego sprężonego powietrza (Blaustein i Radgen, 2001) reszta jest tracona w wyniku nieszczelności, nieodpowiedniego ciśnienia przygotowanego powietrza, niewłaściwego użycia itp. Możliwości oszczędności energii w instalacjach sprężonego powietrza wiążą się przede wszystkim ze zmniejszeniem zużycia energii do napędu sprężarek, przesyłania sprężonego powietrza i sterowania systemami pneumatycznymi. Celem artykułu jest przedstawienie koncepcji budowy stanowiska do badania parametrów sprężonego powietrza. W artykule zostaną omówione podstawowe urządzenia służące do budowy takiej instalacji, ich rodzaje i zadania. W dalszej części pracy przedstawiona zostanie koncepcja zaadoptowania eksploatowanej w naszym zakładzie sieci sprężonego powietrza na potrzeby badań jego parametrów. Odpowiednie przygotowanie tego medium pod względem jakości jest w przemyśle spożywczym zadaniem priorytetowym ze względu na częsty bezpośredni jego kontakt z produktem.
Compressed air is widely applied in food industry. It is often seen as a cheap and even free energy source. However, it is not true. Numerous research prove that industry uses only approximately 30% of the produced compressed air (Blaustein, Radgen 2001) the rest is lost as a result of leak, improper pressure of the prepared air, improper use, etc. Possibilities of saving energy in installations of the compressed air are related to mainly the decrease of energy consumption for compression drive, sending compressed air and controlling pneumatic systems. The objective of the article is to present the concept of construction of the stand for testing compressed air parameters. The article will discuss the basic devices for construction of such installation, their types and tasks. A concept of adapting the compressed air net, used in our unit, for the needs of the research on its parameters. Proper preparation of this medium on account of quality is a priority task due to its frequent direct contact with a product.
Źródło:
Inżynieria Rolnicza; 2013, R. 17, nr 1, t. 1, 1, t. 1; 149-159
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chłodzenie powietrza małogabarytowymi wodnymi chłodnicami ścianowymi
Air cooling by a small-sized water longwall air coolers
Autorzy:
Filek, K.
Franczuk, W.
Łuska, P.
Nowak, B.
Roszkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/350238.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
chłodzenie powietrza
przeponowa chłodnica powietrza
klimatyzacja kopalń
air cooling
mine air conditioning
air cooler
Opis:
W artykule przedstawiono wyniki pomiarów temperatury wody chłodzącej oraz temperatury i wilgotności chłodzonego powietrza, wykonanych w ścianie 3 pokładu 502, partii J KWK "Śląsk", w strefie pracy systemu złożonego z czterech małogabarytowych wodnych chłodnic przeponowych (są to pierwsze tego typu urządzenia wykonane w Polsce - otrzymały oznaczenie SCP-40). Dla każdej chłodnicy ścianowej rezultaty pomiarów jej mocy cieplnej oraz temperatury i wilgotności właściwej powietrza schłodzonego porównane zostały z wynikami obliczeń, które wykonano, wykorzystując zamieszczone w artykule równania. Badania przeprowadzono dla dwóch wariantów połączeń chłodnic od strony wody - szeregowego (wariant A) i szeregowo-równoległego (wariant B). Wyniki pomiarów i obliczeń zestawiono w tabelach i zilustrowano na wykresach. Przeprowadzone badania pozwalają stwierdzić, że sumaryczna moc cieplna czterech chłodnic mieści się w granicach 120-130 kW. Większa moc układu z szeregowo-równoległym połączeniem chłodnic uwidacznia się w postaci nieco niższej temperatury powietrza w wyrobisku - za wylotem ściany obniżenie temperatury powietrza w porównaniu z sytuacją bez chłodzenia wyniosło w wariancie A 2,2 stopni Celsjusza, a w wariancie B 2,8 stopni Celsjusza.
The results of measurements of cooling water temperature and temperature and humidity of cooled air, which were taken in longwall no. 3 of seam no. 502 at part J in "Śląsk" Colliery during the operation of a unit consisting of 4 small-sized diaphragm water air coolers (these are the first units of this kind in Poland) are presented in this paper. The measurement results of heat power for each air-cooler, temperature and specific humidity of cooled air were compared to calculation results, which were obtained on the basis of the equations presented in the paper. The research was conducted for two variants of air-coolers' connection to a water pipe - in series (variant A) and in series - parallel (variant B). The results of calculations and measurements are presented in the tables and the graphs. The conducted research allows to determine that total heat power of four air-coolers is within limits 120--130 kW. The greater power of the system with a series-parallel coolers' connection can be observed in the form of a slightly lower air temperature in the longwall; behind the outlet of the longwall air temperature was reduced by 2.2 degrees of Celsius (variant A) and 2.8 degrees of Celsius (variant B) in comparison with the situation without cooling.
Źródło:
Górnictwo i Geoinżynieria; 2005, 29, 1; 21-38
1732-6702
Pojawia się w:
Górnictwo i Geoinżynieria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Air Quality through Multiple Air Quality Index Models – A Comparative Study
Autorzy:
Shihab, Abdulmuhsin S.
Powiązania:
https://bibliotekanauki.pl/articles/24201707.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
aggregated air quality index
USEPA air quality index
PM10
air quality assessment
Mosul
Opis:
It is important to indicate air quality level in metropolitan areas as it is harmful to public health. Air quality index (AQI) is a useful tool to convert air quality pollutants concentrations into a single number representing air quality level. There are many air quality index models in the literature to represent air quality level. Two models were selected to assess the air quality in Mosul city. The first model utilizes the highest sub-index depending on USEPA pollutants standards. The second model includes the weights of all pollutants in the model as an aggregated air quality index (AAQI) model. Air quality concentrations were collected using a fixed monitoring station located in the courtyard of the public library for a year. The results illustrate that the values of aggregated Air quality index model were higher than those of the USEPA model. Air quality category "Moderate" was dominant in winter and spring for the two models. In contrast, the category "Unhealthy for sensitive group" was dominant in summer and autumn. Furthermore, the category "Unhealthy" appeared only with aggregated model in autumn. The contribution of air pollutants in AQI can be ranked as PM10, SO2, NO2, CO and O3 from higher to lower. The study concluded that the AAQI is comprehensive and more workable in environmental management.
Źródło:
Journal of Ecological Engineering; 2023, 24, 4; 110--116
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic and Financial Aspects of Air Traffic Management in Polish Airspace
Autorzy:
Markiewicz, Telesfor Marek
Powiązania:
https://bibliotekanauki.pl/articles/93318.pdf
Data publikacji:
2019
Wydawca:
Akademia Sztuki Wojennej
Tematy:
air traffic management
air navigation service providers
common charging system for air navigation service
performance scheme for air navigation services
Opis:
The article discusses selected provisions of EU aviation law concerning economic issues of air traffic management. This process in European airspace is carried out by air navigation service providers, which, unlike airport operators and air carriers, have a monopolistic position and do not operate under market conditions. Consequently, the lack of competition between air navigation service providers replaces the common charging system for airspace users established by European Union law. In order to increase the cost-effectiveness of the services provided while maintaining a high level of safety of air operations, the navigation charges system was linked to the parallel implementation of the Single European Sky performance scheme for air navigation services in 2010. In 2019, the rules governing both systems were consolidated into a single legal act. The study also looks at the basic indicators of economic efficiency of air traffic management based on the example of the Polish Air Navigation Agency.
Źródło:
Zeszyty Naukowe Akademii Sztuki Wojennej; 2019, 1(114); 20-36
2543-6937
Pojawia się w:
Zeszyty Naukowe Akademii Sztuki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polish experience in operational air traffic management in the context of European airspace integration
Autorzy:
Markiewicz, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/93338.pdf
Data publikacji:
2018
Wydawca:
Akademia Sztuki Wojennej
Tematy:
Single European Sky initiative
air traffic management
air navigation services
operational air traffic
civil-military cooperation in air traffic management
Opis:
The continued air traffic growth in Polish airspace requires continuous improvement of the efficiency of the air traffic management (ATM) system in order to meet the needs of all its users and to guarantee the highest level of safety of air operations. Activities in this respect undertaken by the Polish Air Navigation Services Agency (PANSA) in cooperation with military aviation authorities are in line with the objectives of the EU Single European Sky (SES) initiative. In addition to the provision of air navigation services (ANS) for civil aviation (commercial air transport and general aviation), PANSA also provides navigation services for the crews of military aircraft and other state aircraft flying in operational air traffic (OAT). The article describes in general terms flights in operational air traffic, presents the evolution of European regulations concerning this category of air traffic and discusses in detail selected procedures for planning and protecting military aviation flights in Polish airspace.
Źródło:
Zeszyty Naukowe Akademii Sztuki Wojennej; 2018, 3(112); 21-41
2543-6937
Pojawia się w:
Zeszyty Naukowe Akademii Sztuki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Clothing Size on Thermal Insulation – A Pilot Study
Autorzy:
Młynarczyk, Magdalena
Orysiak, Joanna
Jankowski, Jarosław
Prus, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/24200936.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
thermal insulation
air gap
air volume
3D scanning
Opis:
Thermal insulation may be influenced by the size of clothing and thus the volume of air gaps. The aim of this study was to determine the relationship between the size of outer wear clothing, and thus the indirect fit (the volume and size of air gaps), and thermal insulation in static and dynamic conditions. A set of underwear and two types of outerwear for workers of the energy sector and the chemical industry were selected for the study. Results showed that the value of thermal insulation (regardless of the type of outerwear) first increased with increasing clothing size.
Źródło:
Fibres & Textiles in Eastern Europe; 2023, 31, 1; 1--8
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiz sushhestvujushhikh sposobov i sredstv dlja separacii semjan
The analysis of existing separators which are using for the separation of the seed
Autorzy:
Kyurchev, S.
Kolodiy, A.
Powiązania:
https://bibliotekanauki.pl/articles/76559.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
seed
separation
cage
air flow
electrical field
air current
Opis:
It is represented an analysis of separators which are using an electric field and current of air.
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 2
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on the Optimal Design of Air Pockets in an Air Bearing Applied Tilting Index Table
Autorzy:
Lee, M.-J
Lee, C.-M
Powiązania:
https://bibliotekanauki.pl/articles/971152.pdf
Data publikacji:
2009
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
optimal design
tilting index table
air bearing
air pocket
Opis:
The tilting index table has attached to CNC machining center with 3axes, it can be improvement of its performance and its machining efficiency. The tilting index table is a key unit in order to manufacture some non-rotational and 3-dimensional parts, using the conventional machining center. The tilting index table is directly connected to a processing object. Regarding the increase in the deflection of the table, it directly affects processing objects and increases errors and that makes impossible to obtain desired processing precision. Thus, this study performed the shape optimization of air pockets in order to minimize the deflection presented in the existing table. In the numerical optimizing method for implementing optimal design, the general full factorial design and response surface method in the design of experiments were used. A finite element analysis was used for computational experiments in which the finite element analysis was performed by using the ANSYS Workbench, which is a type of commercial FEM tool. In addition, the analysis of the results was performed by using the commercial program, Minitab 15. The results show that the optimum design results is better than those of the initial design.
Źródło:
Journal of Machine Engineering; 2009, 9, 2; 114-123
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
JANUS – a new approach to air combat pilot training
Autorzy:
Bridel, Georges
Brévot, Jean_Georges
Goraj, Zdobysław
Devaux, Jean-Pierre
Kiszkowiak, Lukasz
Szczepanski, Cezary
Powiązania:
https://bibliotekanauki.pl/articles/36409351.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
air combat
advanced training
red air
training concept
innovation
Opis:
Advanced jet training still relies on old concepts and solutions that are no longer efficient when considering the current and forthcoming changes in air combat. The cost of those old solutions to develop and maintain combat pilot skills are important, adding even more constraints to the training limitations. The requirement of having a trainer aircraft able to perform also light combat aircraft operational mission is adding unnecessary complexity and cost without any real operational advantages to air combat mission training. Thanks to emerging technologies, the JANUS project will study the feasibility of a brand-new concept of agile manoeuvrable training aircraft and an integrated training system, able to provide a live, virtual and constructive environment. The JANUS concept is based on a lightweight, low-cost, high energy aircraft associated to a ground based Integrated Training System providing simulated and emulated signals, simulated and real opponents, combined with real-time feedback on pilot’s physiological characteristics: traditionally embedded sensors are replaced with emulated signals, simulated opponents are proposed to the pilot, enabling out of sight engagement. JANUS is also providing new cost effective and more realistic solutions for "Red air aircraft” missions, organised in so-called "Aggressor Squadrons”.
Źródło:
Transactions on Aerospace Research; 2019, 4 (257); 7-22
0509-6669
2545-2835
Pojawia się w:
Transactions on Aerospace Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of air springs volume using indirect method in the design of selected pneumatic devices
Autorzy:
Urbansky, M.
Homišin, J.
Kaššay, P.
Krajňák, J.
Powiązania:
https://bibliotekanauki.pl/articles/386269.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
air tank volume determination
indirect method
air pressure measurement
Opis:
At our department, we deal with continuous tuning of torsional oscillating mechanical systems (TOMS) during their operation in terms of torsional oscillation size. Therefore, a new mobile mechanical system was built for purposes of research and presentation of the TOMS continuous tuning using extremal control method, which main advantage is that we do not need to know a mathematical model of the mechanical system. The new mobile device is equipped with a special compressed air distribution system, which important components are air springs. The air springs are modified and used as air pressure tanks with various functions in the mobile device. Therefore, it is important to know the magnitude of the air springs inner volume. This paper deals with determination of air springs volume using indirect method, which is based on the air pressure measurement and also the comparison of obtained results with the results computed from air springs manufacturer data.
Źródło:
Acta Mechanica et Automatica; 2018, 12, 1; 19-22
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Birds strike – impact on the safety of civil aircraft operations in Poland in 2008–2018
Autorzy:
Balicki, Włodzimierz
Głowacki, Paweł
Loroch, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/1837939.pdf
Data publikacji:
2021
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
air transport
air traffic safety
aviation events
bird strike
Opis:
The authors assessed the real threat to civil aircraft traffic in Poland resulting from bird strikes. It was found that in the period 2013–2018, the probability of such events increased by four times. Data for this work were downloaded from the ECCAIRS database maintained by the Civil Aviation Authority. Air traffic events have been collected for several years in this database. An assessment of the energy of bird collision with the aircraft, resulting from the bird’s mass and relative speed of movement, was also presented. Ways to minimise the risk of collision were described by introducing crew warning systems and means to scare off birds from the airport grounds. The method of testing the resistance of turbine engines to the foreign body’s absorption was also shown, as well as design methods for increasing the engine resistance to bird strikes.
Źródło:
Acta Mechanica et Automatica; 2021, 15, 2; 100-106
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the air flow in selected buildings
Autorzy:
Bullová, I.
Powiązania:
https://bibliotekanauki.pl/articles/104898.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
air flow
aerodynamic coefficient
wind speed
air exchange rate
Opis:
Airflow properties are most apparent adjacent to the surface of the building, because there take place any reactions between liquid and solid object. Air exchange rate is associated with air flow through a building by natural - through small openings and cracks in the structure. Due to leakages in the building construction, opening and closing of windows, the air in the building shifts. The value of air exchange rate is hard to predict and depend of several variables - wind speed, difference between outside and inside temperatures, the quality of the building construction. The paper analyzed the air flow in selected buildings and quantified the value of air pressure differences and the air exchange rate with the emphasis on specification of aerodynamic coefficients.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 1; 161-166
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air sanitary transport using ECMO in the treatment of ARDS – case study
Lotniczy transport sanitarny z wykorzystaniem ECMO w leczeniu ARDS - opis przypadku
Autorzy:
Podgórski, Marcin
Wejnarski, Arkadiusz
Pawlak, Agata
Powiązania:
https://bibliotekanauki.pl/articles/1033097.pdf
Data publikacji:
2019
Wydawca:
Towarzystwo Pomocy Doraźnej
Tematy:
ARDS
ECMO
HEMS
Polish Medical Air Rescue
air transport
Opis:
In justified cases, the Polish Medical Air Rescue allows transport of a patient with medical equipment which is not standard medical equipment of the Air Transport Team. In the case at hand, a patient diagnosed with ARDS depended on extracorporeal therapy with an oxygenator. Extracorporeal membrane oxygenation (ECMO) is successfully used in the world and more and more frequently in Poland. It can also be administered using an aircraft of the Polish Medical Air Rescue. Necessity to involve many personnel members and resources indicates the complexity of the described transport of the patient. The authors demonstrate a case of a 22-year-old female patient who one and a half months ago was found unconscious at home following a suicidal attempt (status post aspiration, overdose of the Ketrel drug). Due to the absence of other possible treatments, a decision was made in the hospital to transport the patient to a centre a with higher referral level. Thanks to proper logistics, equipment and protection of the personnel, the Polish Medical Air Rescue transported the patient 260 km in a straight line during ECMO.
Lotnicze Pogotowie Ratunkowe dopuszcza w uzasadnionych przypadkach możliwość przewozu chorego z użyciem sprzętu medycznego niebędącego standardowym wyposażeniem medycznym dla Samolotowego Zespołu Transportowego. W opisanym przypadku pacjent ze zdiagnozowanym ARDS zależny był od terapii pozaustrojowej z wykorzystaniem oksygenatora. Terapia pozaustrojowej oksygenacji krwi (ECMO z ang. extracorporeal membrane oxygenation) z powodzeniem stosowana jest na świecie i co raz częściej w Polsce, możliwa jest również z wykorzystaniem samolotu Lotniczego Pogotowia Ratunkowego. Konieczność zaangażowania wielu sił i środków stanowił o złożoności opisanego transportu pacjenta. Autorzy przedstawiają przypadek pacjentki lat 22, która półtora miesiąca wcześniej została znaleziona w domu nieprzytomna po próbie samobójczej (stan po zachłyśnięciu, przedawkowanie leku Ketrel). Z uwagi na brak dalszych możliwości terapeutycznych w szpitalu zdecydowano o transporcie do ośrodka o wyższej referencyjności. Lotnicze Pogotowie Ratunkowe dzięki odpowiedniej logistyce, wyposażeniu i zabezpieczeniu personelu wykonało transport pacjentki na odcinku w linii prostej 260 km w trakcie pozaustrojowej oksygenacji krwi ECMO.
Źródło:
Critical Care Innovations; 2019, 2, 4; 44-49
2545-2533
Pojawia się w:
Critical Care Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indoor air particles in office buildings with suspected indoor air problems in the Helsinki area
Autorzy:
Lappalainen, Sanna
Salonen, Heidi
Salmi, Kari
Reijula, Kari
Powiązania:
https://bibliotekanauki.pl/articles/2179800.pdf
Data publikacji:
2013-03-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
particle counts
indoor air
supply air
office
health effects
Opis:
Objectives: Airborne particle concentrations can be used as quality indicators of indoor environments. The previous lack of reference data has limited the use of particle measurements in offi ce environments. The aim of this study was to describe the concentrations of airborne particles (≥ 0.5 μm and ≥ 5.0 μm) in 122 Finnish offi ce buildings with suspected indoor air problems. Materials and Methods: The database consisted of indoor air and supply air particle samples collected in 2001–2006 from the Helsinki area. The particle concentrations (≥ 0.5 μm and ≥ 5.0 μm) were measured in the indoor air (528 samples from 122 offi ce rooms) and in the supply air (384 samples from 105 offi ce rooms) with an optical particle counter. Airborne particle concentrations ≥ 0.5 μm were categorized according to the effi ciency of supply air fi ltration and health survey data. Results: The mean concentrations in the indoor air equaled 1900 particles/l and in the supply air 1300 particles/l. The effi ciency of supply air fi ltration decreased the fi ne particles counts in both the indoor and supply air. The counts of large particles, ≥ 5.0 μm, were low in the indoor air. Airborne counts of ≥ 0.5 μm particles (geometric mean) were statistically higher in the offi ces whose occupants had work-related symptoms (eye and/or upper respiratory symptoms or upper respiratory infections) than in the offi ces whose occupants had no such symptoms. However, the symptoms may also be linked to other indoor air problems or particle characteristics not studied in this work. Conclusions: This study indicates typical airborne particle levels (≥ 0.5 μm and ≥ 5.0 μm) in Finnish offi ce buildings with suspected indoor air problems. The results can be used to evaluate the quality of indoor environment, possible indoor air problems, and the need for additional investigations.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2013, 26, 1; 155-164
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New expression to calculate quantity of recovered heat in the earth-pipe-air heat-exchanger operating in winter heating mode
Autorzy:
Molcrette, Vincent F. A.
Autier, Vincent R. B.
Powiązania:
https://bibliotekanauki.pl/articles/240792.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
earth-pipe-air heat-exchanger
analytical model
air heating
Opis:
A new expression is proposed to calculate the earth-energy of an earth-air-pipe heat exchanger during winter heating for three kinds of soil in France. An analytical model is obtained by using numerical computation developed in Scilab – a free open source software. The authors showed the comparison between their simple analytical model and experimental results. They showed the influence of different parameters to specify the size of the heat exchanger.
Źródło:
Archives of Thermodynamics; 2020, 41, 2; 103-117
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Próba identyfikacji zasięgu oddziaływania lodowca górskiego na temperaturę powietrza – na przykładzie lodowca Engabreen (Norwegia)
An attempt to identify the extent of mountain glacier effects on air temperature – on the example of the Engabreen glacier (Norway)
Autorzy:
Dyszy, Wiktoria
Grajek, Zofia
Powiązania:
https://bibliotekanauki.pl/articles/43349427.pdf
Data publikacji:
2022
Wydawca:
Poznańskie Towarzystwo Przyjaciół Nauk
Tematy:
air temperature
variability of air temperature
Engabreen
glacier
UAV
Opis:
This study aims to identify the extent of mountain glacier influence on air temperature in the vertical profile, using the Engabreen glacier (Norway) as an example. An important aspect of the work is also an analysis of the variation in surface temperature and wind conditions in the valley of the Engabreen glacier. The analysis was carried out based on measurement data of vertical air temperature taken over the glacier cavity with sensors mounted to an unmanned aerial vehicle. The field survey was carried out on 25 July 2022 in the afternoon. The results of the measurements may indicate that the presence of the glacier reduces the air temperature gradient with altitude compared to the surrounding areas. Above the glacier, the air temperature in the vertical profile increases with height. Based on the profiles taken above the glacier, it was concluded that the surface of the glacier influences the air temperature above it up to an altitude of 37–53 m above ground level.
Źródło:
Badania Fizjograficzne Seria A - Geografia Fizyczna; 2022, 13 (73); 63-77
2081-6014
Pojawia się w:
Badania Fizjograficzne Seria A - Geografia Fizyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determinants of European air traffic development
Autorzy:
Steiner, S.
Bozicevic, A.
Mihetec, T.
Powiązania:
https://bibliotekanauki.pl/articles/375006.pdf
Data publikacji:
2008
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
air traffic
airspace
Opis:
The paper elaborates main determinants of the strategic development as well as the key factors, which influence European air traffic dynamics. The problem of European airspace fragmentation should be solved by the comprehensive dynamic harmonization programmes, which can contribute to effective increase of airspace capacity and increase of air transport efficiency. The main objective of development strategy refers to the implementation of reformation processes of the European air traffic management system through functional ATM regionalization and adoption of Single European Sky legislation.
Źródło:
Transport Problems; 2008, 3, 4; 73-84
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Temperatura powietrza i wielkość opadów atmosferycznych w województwie łódzkim w latach 1966–2021
Air temperature and precipitation in the Łódź province in the years 1966–2021
Autorzy:
Balcerzak, Patrycja
Kolendowicz, Leszek
Półrolniczak, Marek
Powiązania:
https://bibliotekanauki.pl/articles/43349528.pdf
Data publikacji:
2022
Wydawca:
Poznańskie Towarzystwo Przyjaciół Nauk
Tematy:
air temperature
precipitation
Opis:
The aim of the study is to investigate the course of air temperature and precipitation in Łódź Province in 1966–2021. The study uses daily data provided by the IMGW-PIB net from three meteorological stations: Łódź–Lublinek, Sulejów, and Wieluń. The average air temperature in Łódź province is 8.3ºC. When analyzing the annual course of air temperature, the lowest values were recorded in January (2.1ºC on average), the highest were recorded in July (18.4ºC). A growing, statistically significant trend in air temperature was observed at all the stations in the analyzed multi-year period. The rate of changes in the average air temperature in Łódź province reached the maximum value of 0.35°C/10 years at all the three analyzed stations. The average rainfall totals in Łódź province are not very diversified. The average annual sum of precipitation in the analyzed period in Łódź province ranged from 562.2 mm to 597.2 mm. On a seasonal scale, the heaviest precipitation was in the summer months (June–August), and the lowest in winter (December–February), while autumn rainfallwas slightly higher than in the spring. The biggest amounts of rainfall were recorded in July (84.8 mm), while the minimum rainfall was in February (25.8 mm). At all the stations, there was an upward trend in precipitation in the spring and autumn, and a downward trend in the summer. On average, in Łódź province there were 169 days with precipitation.
Źródło:
Badania Fizjograficzne Seria A - Geografia Fizyczna; 2022, 13 (73); 7-25
2081-6014
Pojawia się w:
Badania Fizjograficzne Seria A - Geografia Fizyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Diagnosis of Russia’s Military Capability in a Situation of an Escalation of Hostility in Ukraine and Possible Implications for the Safety of the Eastern NATO Flank
Autorzy:
Michalski, Daniel
Radomyski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2048218.pdf
Data publikacji:
2021-12-14
Wydawca:
Uniwersytet Mikołaja Kopernika w Toruniu. Wydawnictwo UMK
Tematy:
Air defense system
ballistic missiles
air potential
military doctrine
missile anti-aircraft systems
anti-aircraft artillery
air offensive operation
defensive air operation
Opis:
The paper presents the results of research, whose main goal is to evaluate the aviation and rocket capability of the armed forces of the Russian Federation and Ukraine in terms of a possible launch of regular warfare. The authors primarily focus on changes in the military doctrine of the Russian Federation, which have created legal determinants of the use of armed forces outside the country’s territory in defense of national minorities, illustrated by taking control of Crimea. The authors also stress Russia’s military plans, including the development directions of the potential of armed forces as well as a possible threat to the security of the eastern NATO’s flank in the event of a conflict in Ukraine. In this respect, the capabilities of the air defense of countries on the eastern NATO flank, particularly Poland’s capability, were analyzed.
Źródło:
Historia i Polityka; 2021, 38 (45); 71-87
1899-5160
2391-7652
Pojawia się w:
Historia i Polityka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ventilation Flow Organization for Efficient Elimination of Contaminated Air
Autorzy:
Holmberg, S.
Powiązania:
https://bibliotekanauki.pl/articles/90628.pdf
Data publikacji:
1998
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
ventilation principles
age of air
air change efficiency
air distribution
contaminant control
wentylacja
powietrze
kontrola zanieczyszczeń
Opis:
Displacement ventilation and well-organized ventilation flow structures are emphasized. Perhaps the biggest advantage of displacement ventilation is its increased effectiveness in removing pollutants from a ventilated space and the efficient use of ventilation air. Several questions on how the systems should be designed to achieve optimal efficiency are still unanswered. Small variations in room geometries and air supply arrangements can totally change the conditions. Results from this investigation show the importance of an even distribution of the incoming supply air, numerically calculated age-of-air values and the influence of residual tracer concentrations on rneasured mean values for the age of air.
Źródło:
International Journal of Occupational Safety and Ergonomics; 1998, 4, 1; 85-96
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 3986

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