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Tytuł:
Studies of Plasma-Focus discharges within the PF-360 facility equipped with a planar D2O-ice target
Autorzy:
Zebrowski, J.
Baranowski, J.
Jakubowski, L.
Sadowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/147057.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
cryogenic target
ion beams
neutron yield
plasma focus
X-rays
Opis:
The paper reports on investigations of dense magnetized plasmas produced within a modernized PF-360 facility, which was operated with an additional planar cryogenic target placed in the front of the electrode outlet and covered with D2O-ice layers. The main aim of these studies was to overcome the neutron saturation effect and to increase the maximum neutron yield from PF discharges by using fast deuteron beams. Such beams are usually emitted from a pinch region and can produce fast neutrons from D-D reactions during their interactions with the additional target.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 65-68
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lokalne uwarunkowania rozwoju prywatnych firm leśnych na przykładzie wybranego nadleśnictwa
Autorzy:
Zastocki, D.
Moskalik, T.
Sadowski, J.
Mokrzynski, L.
Dydkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/881186.pdf
Data publikacji:
2012
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2012, 14, 3[32]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena submisji jako formy sprzedaży drewna najwyższej jakości
Evaluation of submission as a form of sales of supreme quality timber
Autorzy:
Zastocki, D.
Moskalik, T.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/989921.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
RDLP Krosno
drewno
sprzedaz
drewno cenne
submisje
rynek drzewny
submission
valuable timber
timber market
Opis:
Submission is a public announcement of an offer in order to acquire buyers who then present their offerings in writing, thus accepting the terms of sales and payment for the purchased timber. Submission sales of valuable timber is one of the forms of sales of timber adopted by the State Forests National Forest Holding. Increasing demand for supreme quality timber, collected in large amounts in one place and time resulted in establishment of submission sales of valuable timber in RDLP Krosno in year 2000. The interest in veneer wood grew rapidly amongst domestic and foreign companies, and at the same time the district of Podkarpacie was being promoted. This study presents the sales results and prices acquired for veneer wood, and the evaluation of submission as a form of sales of valuable timber in years 2000−2014. The presented specification, from the analysed period, justifies the implementation of this form of sales.
Źródło:
Sylwan; 2015, 159, 09; 707-713
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pozyskanie drewna w nadleśnictwach Puszczy Białowieskiej w latach 2008-2015
Harvest of timber in forest districts of the Bialowieza Forest in 2008-2015
Autorzy:
Zastocki, D.
Lachowicz, H.
Sadowski, J.
Moskalik, T.
Nietupska, M.
Powiązania:
https://bibliotekanauki.pl/articles/985925.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Bialowieska
gospodarka lesna
nadlesnictwa
pozyskiwanie drewna
sortymenty drewna
lata 2008-2015
białowieża forest
cutting categories
assortments
nature−valuable areas
Opis:
The paper presents a multifaceted structure of timber harvest in 2008−2015 in the Białowieża, Browsk and Hajnówka forest districts located in the Białowieża Forest. The object of the research, including the Białowieża National Park being a remnant of the primeval forests, is considered one of the most valuable forest areas of natural origin in Europe. The studies were made on the basis of the data from the reports created by the State Forests Information System and forest management plans, as well as the nature conservation programs of the surveyed forest districts. In the analysed period, a total of 665,032.5 m3 of merchantable timber was harvested in the analysed area. The highest volume of merchantable timber was harvested in the Browsk Forest District – 305,934 m3 (46%), then in the Hajnówka Forest District – 219,300 m3 (33%), with the lowest volume harvested in the Białowieża Forest District 139,788 m3 (21%). Among the individual assortment groups, the medium−sized timber was the most common and its harvested volume amounted to 413,579 m3, while the harvested volume of large−sized timber amounted to 251,454 m3. The lowest harvested volume concerned the small−sized timber and amounted to 21,652 m3. In the analysed period, softwood had the largest share in timber harvest and amounted to 443,469 m3. Hardwood was obtained in the volume of 243,215 m3. According to the cutting category, the timber harvest structure was as follows: the highest volume was harvested in pre− commercial thinning 382,495 m3 (54%), that from incidental felling amounted to 251,003 m3 (38%), while the lowest volume of harvested timber was from final cutting – 53,186 m3 (8%). Forest districts located in the Białowieża Forest encounter many difficulties affecting timber harvest. The main reason for this lies in the numerous restrictions imposed on the management of areas covered by various forms of nature protection, including the exclusion of some habitats, or stands of 100 years of age and older from management, which significantly affects the yield. The lack of a determined rotation age for stands in the Białowieża Forest also has a significant impact on timber harvest.
Źródło:
Sylwan; 2018, 162, 11; 941-948
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Produkcja węgla drzewnego na przykładzie RDLP Krosno
Charcoal production on the example of the Krosno RDSF
Autorzy:
Zastocki, D.
Sadowski, J.
Moskalik, T.
Oktaba, J.
Janik, M.
Powiązania:
https://bibliotekanauki.pl/articles/985977.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
RDLP Krosno
uboczne uzytkowanie lasu
wegiel drzewny
weglarstwo lesne
nadlesnictwa
wielkosc produkcji
charcoal burning
bieszczady mountains
adjustable retorts
efficiency
Opis:
The burning of wood in the Bieszczady Mountains (SE Poland) began to play a significant role with first settlements in this region in the 17th and 18th centuries. Large beech wood resources were the main reason for such a high charcoal production in this part of Poland. The role of charcoal production in the Bieszczady region is reflected in the names of villages such as Smolnik (Tar), Potasznia (Potash) and Mielerzysko (Charcoal Pile). The aim of this paper is to present the scope and volume of charcoal production in forest districts located in the territory of the Krosno Regional Directorate of State Forests (RDSF) in 2008−2013. It also identifies the number of companies dealing with charcoal production as well as the efficiency and amount of burned charcoal calculated on the basis of the quantity of purchased wood. The verification of the information about the locations of charcoal burning concerned all 26 forest districts of the Krosno RDSF. Charcoal burning bases were identified in the following forest districts: Baligród, Bircza, Cisna, Dukla, Komancza, Lutowiska, Rymanów and Stuposiany. Most bases were located in the territory of the Lutowiska ranging from 5 to 7 in the analysed period. Slight changes in the number of charcoal burning bases were found in the Cisna forest district, where initially there were 5 companies involved in charcoal production, while in 2009−2010 their number increased to 6 entities. In the Stuposiany forest district 5 bases of charcoal burning run by two companies were identified, and in the Baligród and Komańcza forest districts four charcoal burning bases operated in each of them. In the Dukla forest district, two companies dealing with charcoal production were identified in 2008−2009, one in 2010−2012, while in 2013 no such entity was found. In the Bircza and Rymanów forest districts, only one charcoal burning base operated at that time. In 2008−2013, the number of bases located in the research area slightly decreased from 29 to 25, and the amount of produced charcoal decreased from 7372.4 to 3855.6 tonnes sold mainly in Bieszczady and part of the Lublin region. A significant drop in production was not the result of a decrease in demand; it was rather associated, inter alia, with the import of cheaper charcoal from abroad.
Źródło:
Sylwan; 2018, 162, 10; 837-843
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Submisja jako forma sprzedaży cennego surowca drzewnego
Submission sales as a form of valuable timber trade
Autorzy:
Zastocki, D.
Dobosz, L.
Moskalik, T.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1006461.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
rynek drzewny
drewno
sprzedaz
submisje
RDLP Krosno
submission sales
assortment
valuable timber
timber market
Opis:
There are various forms of timber sales in the State Forests: auctions, tenders, submission, commission, negotiation, retail, and free−hand. In response to the steadily growing market demand for high quality wood, regular submission sales of valuable timber was launched in Krosno Regional Directorate of the State Forests (RDLP) in 2000. A favourable situation on the timber market at that time contributed to the sale of all offered timber. Since then, an increasing interest in veneer wood, especially of beech, has been observed among companies both in Poland and abroad. The paper presents the results and evaluation of submission sales as a form of valuable timber trade in the years 2000−2009. It also provides an analysis of the revenues obtained from the submission sales compared to the total sale of timber in the territory of Krosno RDLP in individual years. The presented specification from the last decade confirms the right choice of this form of sale in the Krosno RDLP. Thanks to the submission sales, the timber from the Podkarpacie region is highly appreciated in the European and world markets.
Źródło:
Sylwan; 2012, 156, 04; 305-314
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane wskaźniki techniczno-ekonomiczne pozyskania drewna na przykładzie Nadleśnictwa Radzyń Podlaski w latach 2006-2012
Selected technical and economic indicators of a timber harvest on the of example of the Radzyn Podlaski Forest District in the years 2006-2012
Autorzy:
Zastocki, D.
Moskalik, T.
Sadowski, J.
Lisiecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/881270.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lesnictwo
Nadlesnictwo Radzyn Podlaski
pozyskiwanie drewna
wskazniki techniczno-ekonomiczne
sortymenty drewna
pracochlonnosc
struktura zatrudnienia
firmy lesne
wyposazenie techniczne
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2014, 16, 2B[39]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wyniki submisji drewna cennego na przykładzie RDLP Krosno
Submission sale of valuable wood on the example of the Krosno Regional Directorate of the State Forests
Autorzy:
Zastocki, D.
Dobosz, L.
Moskalik, T.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/972767.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drewno
sprzedaz
submisje
RDLP Krosno
ceny
rynek drzewny
analiza cen
drewno cenne
drewno bukowe
drewno brzozowe
drewno czeresniowe
drewno debowe
drewno jesionowe
drewno jaworowe
drewno klonowe
drewno lipowe
drewno modrzewiowe
drewno olszowe
drewno orzecha
drewno osiki
drewno sosnowe
drewno wiazowe
submission
assortment
valuable wood
timber market
Polska
Opis:
Sale of valuable wood assortments in the State Forests takes place in submissions and other forms of timber sale. In response to the growing demand for a specific timber, the forest administration of the Krosno Regional Directorate of the State Forests (RDSF) offers customers the ever−increasing amount of high−quality wood for sale in the submission. This has resulted in an increased interest in purchases of large amounts of wood in one place to be processed by veneer wood companies, and at the same time contributed to the promotion of the Podkarpacie region.The paper presents sale results and prices of veneer wood obtained in submissions and in other forms of sale in the territory of the Krosno RDSF in the years 2000−2009. A detailed analysis of the value of sales of valuable wood in submissions and in other forms of sale in individual years allowed to draw conclusions confirming the correctness of the decisions made in choosing such forms of timber sale.
Źródło:
Sylwan; 2012, 156, 07; 483-493
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of optical spectra recorded during DPF-1000U plasma experiments with gas-puffing
Autorzy:
Zaloga, D. R.
Skladnik-Sadowska, E.
Kubkowska, M.
Ladygina, M. S.
Malinowski, K.
Kwiatkowski, R.
Sadowski, M. J.
Paduch, M.
Zielinska, E.
Makhlaj, V. A.
Powiązania:
https://bibliotekanauki.pl/articles/147780.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
electron density
gas-puff
optical spectrum
plasma focus
plasma stream
Opis:
The results are presented of the optical spectra measurements for free plasma streams generated with the use of the modifi ed DPF-1000U machine. This facility was recently equipped with a gas injection system (the so-called gas-puff) placed on the symmetry axis behind the central opening in the inner electrode. The DPF-1000U experimental chamber was fi lled up with pure deuterium at the initial pressure of 1.6 or 2.4 mbar. Additionally, when the use was made of the gas-puff system about 1 cm3 of pure deuterium was injected at the pressure of 2 bars. The gas injection was initiated 1.5 or 2 ms before the triggering of the main discharge. The investigated plasma discharges were powered from a condenser bank charged initially to 23 kV (corresponding to the energy of 352 kJ), and the maximum discharge current amounted to about 1.8 MA. In order to investigate properties of a dense plasma column formed during DPF-1000U discharges the use was made of the optical emission spectroscopy. The optical spectra were recorded along the line of sight perpendicular to the vacuum chamber, using a Mechelle®900 spectrometer. The recent analysis of all the recorded spectra made it possible to compare the temporal changes in the electron density of a freely propagating plasma stream for discharges without and with the gas-puffing. Using this data an appropriate mode of operation of the DPF-1000U facility could be determined.
Źródło:
Nukleonika; 2015, 60, 2; 309-314
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on interactions of plasma streams with CFC targets in the Rod Plasma Injector facility
Autorzy:
Zaloga, D. R.
Kwiatkowski, R.
Skladnik-Sadowska, E.
Sadowski, M. J.
Nowakowska-Langier, K.
Powiązania:
https://bibliotekanauki.pl/articles/146642.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
CFC target
optical spectroscopy
plasma streams
plasma-target interaction
Opis:
This paper present results of optical spectroscopy studies of interactions of intense plasma streams with a solid target made of carbon fibre composite (CFC). The experiments were carried out within the Rod Plasma Injector (RPI) IBIS facility. The optical measurements were performed first for a freely propagating plasma stream in order to determine the optimal operational parameters of this facility. Optical emission spectra (OES) were recorded for different operational modes of the RPI IBIS device, and spectral lines were identified originating from the working gas (deuterium) as well as some lines from the electrode material (molybdenum). Subsequently, optical measurements of plasma interacting with the CFC target were performed. In the optical spectra recorded with the irradiated CFC samples, in addition to deuterium and molybdenum lines, many carbon lines, which enabled to estimate erosion of the investigated targets, were recorded. In order to study changes in the irradiated CFC samples, their surfaces were analysed (before and after several plasma discharges) by means of scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) techniques. The analysis of the obtained SEM images showed that the plasma irradiation induces noticeable changes in the surface morphology, for example vaporisation of some carbon fi bres and formation of microcracks. The obtained EDS images showed that upon the irradiated target surface, some impurity ions are also deposited, particularly molybdenum ions from the applied electrodes.
Źródło:
Nukleonika; 2016, 61, 2; 179-183
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Ion Implantation on Magnetic Structural and Optical Properties of (Ga,Mn)As Epitaxial Films
Autorzy:
Yastrubchak, O.
Kulik, M.
Żuk, J.
Domagała, J.
Szymczak, R.
Wosiński, T.
Sadowski, J.
Tóth, A.
Powiązania:
https://bibliotekanauki.pl/articles/1812027.pdf
Data publikacji:
2008-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Pp
78.30.Fs
Opis:
We performed implantation experiments, applying both the chemically active oxygen ions and inactive ions of neon noble gas, to thin epitaxial films of (Ga,Mn)As ferromagnetic semiconductor. Inspection of their magnetic properties by means of a superconducting quantum interference device magnetometer revealed that the implantation with a low dose of either O or Ne ions completely suppressed ferromagnetism in the films. Both the high resolution X-ray diffraction technique and the Raman spectroscopy showed significant changes in the structural and optical properties of the films caused by oxygen implantation and confirmed the preservation of high structural and optical quality of the neon implanted (Ga,Mn)As films.
Źródło:
Acta Physica Polonica A; 2008, 114, 5; 1445-1450
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
XANES Studies of Mn K and $L_{3,2}$ Edges in the (Ga,Mn)As Layers Modified, by High Temperature Annealing
Autorzy:
Wolska, A.
Lawniczak-Jablonska, K.
Klepka, M.
Jakieła, R.
Demchenko, I.
Sadowski, J.
Holub-Krappe, E.
Persson, A.
Arvanitis, D.
Powiązania:
https://bibliotekanauki.pl/articles/1812244.pdf
Data publikacji:
2008-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.70.Dm
75.50.Pp
Opis:
$Ga_{1-x}Mn_xAs$ is commonly considered as a promising material for microelectronic applications utilizing the electron spin. One of the ways that allow increasing the Curie temperature above room temperature is to produce second phase inclusions. In this paper $Ga_{1-x}Mn_xAs$ samples containing precipitations of ferromagnetic MnAs are under consideration. We focus on the atomic and electronic structure around the Mn atoms relating to the cluster formation. The changes in the electronic structure of the Mn, Ga and As atoms in the (Ga,Mn)As layers after high temperature annealing were determined by X-ray absorption near edge spectroscopy. The experimental spectra were compared with the predictions of ab initio full multiple scattering theory using the FEFF 8.4 code. The nominal concentration of the Mn atoms in the investigated samples was 6% and 8%. We do not observe changes in the electronic structure of Ga and As introduced by the presence of the Mn atoms. We find, in contrast, considerable changes in the electronic structure around the Mn atoms. Moreover, for the first time it was possible to indicate the preferred interstitial positions of the Mn atoms.
Źródło:
Acta Physica Polonica A; 2008, 114, 2; 357-366
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planar Hall Effect in Ferromagnetic (Ga,Mn)As/GaAs Superlattices
Autorzy:
Wesela, W.
Wosiński, T.
Mąkosa, A.
Figielski, T.
Sadowski, J.
Terki, F.
Charar, S.
Powiązania:
https://bibliotekanauki.pl/articles/2047701.pdf
Data publikacji:
2007-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.50.Jt
75.50.Pp
75.30.Gw
85.75.-d
Opis:
The planar Hall effect was used for investigation of magnetic anisotropy in short period (Ga,Mn)As/GaAs superlattices epitaxially grown on (001) oriented GaAs substrate. The results confirmed the existence of low-temperature magnetocrystalline anisotropy in the superlattices with the easy magnetic axes directed along the two in-plane 〈100〉 directions. Attention is paid to the two-state behaviour of the planar Hall resistance at zero magnetic field that provides its usefulness for applications in non-volatile memory devices.
Źródło:
Acta Physica Polonica A; 2007, 112, 2; 369-373
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozwiazania konstrukcyjne adapterow stosowane w roztrzasaczach obornika
The designs of adapters used in manure spreaders
Autorzy:
Waszkiewicz, C
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/884223.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
adaptery boczne
adaptery szerokopasmowe
adaptery waskopasmowe
maszyny rolnicze
roztrzasacze obornika
rozwiazania konstrukcyjne
Opis:
W artykule przedstawiono rozwiązania konstrukcyjne adapterów wyskopasmowych, szerokopasmowych i bocznych, jakie są stosowane w roztrząsaczach obornika produkowanych przez różne firmy.
In the article presented are the designs of narrow-strip, wide-strip and side adapters, which are used in manure spreaders produced by various firms.
Źródło:
Technika Rolnicza Ogrodnicza Leśna; 2008, 05; 2-4
1732-1719
2719-4221
Pojawia się w:
Technika Rolnicza Ogrodnicza Leśna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of fly ash and fly ash agglomerates for As(III) adsorption from aqueous solution
Autorzy:
Ulatowska, J.
Polowczyk, I.
Sawiński, W.
Bastrzyk, A.
Koźlecki, T.
Sadowski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/779784.pdf
Data publikacji:
2014
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
arsenic
fly ash
fly ash agglomerates
adsorbents
adsorption
Opis:
The objective of the present study is to assess the efficiency of fly ash and fly ash agglomerates to remove arsenic(III) from aqueous solution. The maximum static uptakes were achieved to be 13.5 and 5.7 mgAs(III)/adsorbent for nonagglomerated material and agglomerated one, respectively. Isotherm studies showed good fit with the Langmuir (fly ash) and the Freundlich (fly ash agglomerates) isotherm models. Kinetic studies indicated that the sorption of arsenic on fly ash and its agglomerates follows the pseudo-second-order (PSO) chemisorption model (R2 = 0.999). Thermodynamic parameters revealed an endothermic nature of As(III) adsorption on such adsorbents. The adsorption results confirmed that fly ash and its agglomerates can be used for As(III) removal from aqueous solutions. Fly ash can adsorb more arsenic(III) than agglomerates, which are easier to use, because this material is less dusty and easier to separate from solution.
Źródło:
Polish Journal of Chemical Technology; 2014, 16, 1; 21-27
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
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