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Wyszukujesz frazę "Kumar, A." wg kryterium: Autor


Tytuł:
Orchid diversity at Cuetzalan del Progreso, Puebla, Mexico – anthropogenic threats and potential for organic production for conservation purposes
Autorzy:
Alvarez-Mora, Raúl
Cetzal-Ix, William
Basu, Saikat Kumar
Noguera-Savelli, Eliana
González-Valdivia, Noel A.
Martínez-Puc, Jesús F.
Zandi, Peiman
Możdżeń, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2182149.pdf
Data publikacji:
2016-12-31
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
anthropogenic factors
biodiversity
conservation
Cuetzalan del Progreso
Mexico
orchid
Opis:
The orchid flora of Puebla State represents 16% of the total species present in Mexico demonstrating rich biodiversity. However, several municipalities in the north-east of Puebla area are located within a conservation priority area for its tropical montane cloud forest and tropical rain forest due to decision of the Comisión Nacional para el Conocimiento y el Uso de la Biodiversidad of Mexico. We have recorded 93 species from Cuetzalan del Progreso with 25 new records of the flora of the state. These new dditions thereby currently increase the orchid flora of Puebla to 197 species. Of these, six species are classified as threatened, three as subject to special protection by the NOM-059-SEMARNAT-2010 and one classified as least concern by the International Union for the Conservation of Nature. Moreover, we recorded 37 species illegally traded in “tianguis” (informal markets) of Cuetzalan del Progreso. The orchid diversity in the fragmented forests can be harnessed in establishing a model for the sustainable management and to promote conservation action f species at some level of threat and in the restoration of areas with fragmented forests. Unfortunately, the orchid diversity has been seriously endangered by several anthropogenic factors. We have also recorded significant anthropogenic threats in this municipality for the long-term existence of the local orchid members and species with potential for commercial production. A viable approach will be to allow the introduction of in vitro germination program and organic production of orchids by local and fringe communities; this will reduce inhabitants’ dependence on the scarce forest resources, lessen illegal harvesting and trafficking of wild orchids, and at the same time provide economic development for the local communities.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2016, 1; 7-23
2543-8832
2545-0999
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Semisolid and Strontium Addition on Dry Sliding Wear Behavior of Hypoeutectic Al-Si Alloy
Autorzy:
Anas, Noraz Man
Zakaria, S. A.
Anasyida, A. S.
Mohamad, Hasmaliza
Dhindaw, Brij Kumar
Powiązania:
https://bibliotekanauki.pl/articles/2203750.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hypoeutectic Al-Si alloy
semisolid
cooling slope
Sr
wear resistance
Opis:
The study aims to investigate the effect of semisolid structure and strontium (Sr) addition on the wear behavior of hypoeutectic Al-Si alloy. Semisolid hypoeutectic Al-Si alloy was prepared using cooling slope casting with addition of 0 to 0.93 wt.% Sr. Microstructural study was done using an optical microscope. Vicker microhardness and pin on disc tribometer were used for microhardness and wear testing. When compared to conventional casting, the microhardness of the semisolid hypoeutectic Al-Si alloy improved by 9.8%. Sr addition at 0.43 wt.% resulted in a refined eutectic structure with a 17% increase in hardness over conventional casting. The globular structure α-Al formed during semisolid casting reduced porosity, and the addition of Sr refined the eutectic silicon into a fine fibrous structure that is tightly bound with the Al matrix. These are the primary factors that contribute to the high wear resistance in modified-Sr semisolid alloys.
Źródło:
Archives of Metallurgy and Materials; 2023, 68, 1; 307--317
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transient finite element simulation and microstructure evolution of AA2219 weld joint using gas tungsten arc welding process
Autorzy:
Arunkumar, S.
Shrikrishna, A. K.
Paulraj, S.
Devakumaran, K.
Kumar, S. R.
Powiązania:
https://bibliotekanauki.pl/articles/101882.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
AA2219 aluminium alloy
gas tungsten arc welding
finite element simulation
metallurgical characterization
Opis:
In this study we focus on finite element simulation of gas tungsten arc welding (GTAW) of AA2219 aluminum alloy and the behavioral of the microstructure before and after weld. The simulations were performed using commercial COMSOL Multiphysics software. The thermal history of the weld region was studied by initially developed mathematical model. A sweep type meshing was used and transient analysis was performed for one welding cycle. The highest temperature noted was 3568 °C during welding. The welding operation was performed on 200×100×25 mm plates. Through metallurgical characterization, it was observed that a fair copper rich cellular (CRC) network existed in the weld region. A small amount of intermetallic compounds like Al2Cu is observed through the XRD pattern.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 31; 64-73
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of services and referrals through dental outreach programs in rural areas of India. A two year study
Autorzy:
Asawa, K.
Bhanushali, N.V.
Tak, M.
Kumar, D.R.V.
Rahim, M.F.B.A.
Alshahran, O.A.
Divakar, D.D.
Powiązania:
https://bibliotekanauki.pl/articles/877920.pdf
Data publikacji:
2015
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
motivation
utilization
service
referral
dental outreach programme
rural area
rural population
India
Opis:
Background. Oral health care services are often sparse and inconsistent in India therefore it is often difficult for poor people to get access to the oral health care services. The approach by dental institutions with the help of community outreach programs is a step ahead in overcoming this situation. Objectives. The study was conducted to evaluate the number of patients, disease pattern and the services provided in the outreach programmes and also effectiveness of patient referral. Methods. A retrospective study was conducted and the data were obtained from records of outreach programs conducted, in last 2 years by Pacific Dental College and Hospital. The data were analysed using descriptive statistics for the computation of percentages Chi-square test was applied to know the association of effectiveness of referral with age and gender. Confidence level and level of significance was fixed at 95% and 5% respectively. Results. A total of 22982 individuals in the age group of 4-80 years attended the outreach program. Dental caries (42.3%), periodontal diseases (63.2-69.0%) and dental fluorosis (33.7-35.0%) were commonly observed diseases. Effectiveness of referral was significantly high among the middle age adults and females (P<0.05). The effectiveness of referral was highly improved in 2013 after establishment of certain guidelines and strategies. Conclusion. The approaches by dental institutions with the help of community outreach programs can spread awareness and disseminate treatment and thereby enhancing access to care and eliminating access to care within the rural communities.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2015, 66, 3
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protuberance-mediated high frequency of adventitious shoot regeneration from sweetpotato leaf explants [Ipomoea batatas (L.) Lam.]
Autorzy:
Ashok Kumar, H.G.
Ku, A.T.
Agrawal, P.
Mahesh, S.
Yeh, K.-W.
Powiązania:
https://bibliotekanauki.pl/articles/80764.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adventitious shoot
organogenesis
sweet potato
Ipomoea batatas
plant regeneration
leaf explant
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 4
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review of the importance of synchrophasor technology, smart grid, and applications
Autorzy:
Baba, Maveeya
Nor, Nursyarizal B.M.
Sheikh, Aman
Nowakowski, Grzegorz
Masood, Faisal
Rehman, Masood
Irfan, Muhammad
Arefin, Ahmed Amirul
Kumar, Rahul
Baba, A. Momin
Powiązania:
https://bibliotekanauki.pl/articles/2173713.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phasor measurement unit
PMU
micro-PMU
Global Positioning System
GPS
optimal PMU placement
smart grid
SG
jednostka pomiaru fazorów
mikro-PMU
globalny system pozycjonowania
optymalne rozmieszczenie PMU
sieć inteligentna
Opis:
The electrical network is a man-made complex network that makes it difficult to monitor and control the power system with traditional monitoring devices. Traditional devices have some limitations in real-time synchronization monitoring which leads to unwanted behavior and causes new challenges in the operation and control of the power systems. A Phasor measurement unit (PMU) is an advanced metering device that provides an accurate real-time and synchronized measurement of the voltage and current waveforms of the buses in which the PMU devices are directly connected in the grid station. The device is connected to the busbars of the power grid in the electrical distribution and transmission systems and provides time-synchronized measurement with the help of the Global Positioning System (GPS). However, the implementation and maintenance cost of the device is not bearable for the electrical utilities. Therefore, in recent work, many optimization approaches have been developed to overcome optimal placement of PMU problems to reduce the overall cost by providing complete electrical network observability with a minimal number of PMUs. This research paper reviews the importance of PMU for the modern electrical power system, the architecture of PMU, the differences between PMU, micro-PMU, SCADA, and smart grid (SG) relation with PMU, the sinusoidal waveform, and its phasor representation, and finally a list of PMU applications. The applications of PMU are widely involved in the operation of power systems ranging from power system control and monitor, distribution grid control, load shedding control and analyses, and state estimation which shows the importance of PMU for the modern world.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 6; art. no. e143826
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Status and Scope of the Jute Industry in India in Comparison to other World Producers
Analiza produkcji włókien z juty i wyrobów jutowych w Indiach w porównaniu do innych producentów światowych
Autorzy:
Bag, S. N.
Kumar, U. C.
Pal, A. K.
Powiązania:
https://bibliotekanauki.pl/articles/234020.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
twill
bags
hessian
jute goods
sacking
diagonal
torby
włókno jutowe
wyroby z juty
worki jutowe
Opis:
India is the leading producer of raw jute and jute products in the world. India’s sacking goods production comprises 75% of the total goods production and B twill bags, used for packaging rice and wheat, and contributes 85% of the total sacking bag production. Still there exists an increasing trend of imports of jute products due to the increase in the domestic consumption of conventional jute goods. Bangladesh is the major exporter in jute goods, with India in 2nd position. Hessian cloth and bags are the major exporting items of jute goods from India. In the overall situation, there exists a unique opportunity of the jute industry to improve the social and economic conditions of the states concerned as well as the country. Being the preferred sector in raw jute production due to suitable topographical conditions, emphasis now needs to be placed on modernization of the jute sector with a view to developing a viable and efficient jute manufacturing sector in the country.
Indie są wiodącym producentem włókien jutowych i produktów z juty. Indie produkują 75%-85% światowej produkcji worków opakunkowych. Istnieje wzrastający trend zużycia worków jutowych w związku ze zwiększającym się zapotrzebowaniem krajowym. Drugie miejsce w produkcji wyrobów jutowych zajmuje Bangladesz. Istnieją korzystne warunki do dalszej poprawy rozwoju przemysłu juty, w tym zwiększenie modernizacji i wydajności przemysłu.
Źródło:
Fibres & Textiles in Eastern Europe; 2016, 6 (120); 19-25
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected physico-mechanical characteristics of cryogenic and ambient ground turmeric
Autorzy:
Barnwal, P.
Mohite, A.M.
Singh, K.K.
Kumar, P.
Powiązania:
https://bibliotekanauki.pl/articles/25528.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
physical characteristics
mechanical characteristics
cryogenic grinding
ambient grinding
turmeric
Curcuma longa
packaging
handling
storage
Opis:
In this communication, selected physicomechanical characteristics of ground turmeric (cv. Prabha) were investigated for cryogenic and ambient grinding conditions of turmeric at different moisture contents (4, 6, 8 and 10% w.b.). A cryogenic grinder (Model: 100 UPZ, Hosokawa Alpine, Germany) and a micro pulverizer (hammer mill) were used for cryogenic and ambient grinding, respectively. The ground turmeric was graded in three grades viz. Gr-I, Gr-II and Gr-III with a sieve shaker using BSS Nos. 40, 85 and pan, respectively. Tap densities for cryogenic and ambient ground turmeric decreased from 678.7 (Gr-I) to 546.7 kgm-3 (Gr-III) and from 642.3 (Gr-I) to 468.6 kgm-3 (Gr-III), respectively, with the moisture increase. The angle of repose for cryogenic and ambient ground turmeric increased linearly from 26.85 (Gr-I) to 34.0° (Gr-III) and from 23.10 (Gr-I) to 28.06° (Gr-III), respectively with the increase in moisture content. The static coefficient of friction was the highest on plywood surface followed by mild steel sheet and galvanized iron sheet. The cryoground samples were found better in colour. Thermal conductivity of cryo-ground samples was higher than that of ambient ground samples. These physico-mechanical characteristics of cryogenic and ambient ground turmeric will be helpful for packaging, handling, and storage.
Źródło:
International Agrophysics; 2014, 28, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
One-step synthesis of highly-biocompatible spherical gold nanoparticles using Artocarpus heterophyllus Lam. (jackfruit) fruit extract and its effect on pathogens
Autorzy:
Basavegowda, N.
Kumar, G.D.
Tyliszczak, B.
Wzorek, Z.
Sobczak-Kupiec, A.
Powiązania:
https://bibliotekanauki.pl/articles/51469.pdf
Data publikacji:
2015
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2015, 22, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric studies and simulation of PSA process for oxygen production from air
Autorzy:
Beeyani, A.
Singh, K.
Vyas, R.
Kumar, S.
Powiązania:
https://bibliotekanauki.pl/articles/779567.pdf
Data publikacji:
2010
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
amplituda ciśnienia adsorpcji
model matematyczny
symulacja
produkcji tlenu
MATLAB
Zeolit5A
pressure swing adsorption
mathematical model
simulation
oxygen production
Zeolite 5A
Opis:
A numerical simulation and parametric studies for the separation of air using 5A zeolite for the production of oxygen are presented for a basic two bed pressure swing adsorption (PSA) process. The simulation is based on an in-house program 'PSASOL' developed in MATLABŽ. The transient process of PSA has been described by a set of partial differential equations, which were solved using a finite difference method. Simulation results have been validated with the experimental data from literature. Based on the simulation results, an optimal set of operational parameter values has been obtained for the PSA bed. The values of the optimal parameters, viz. adsorption pressure, cycle time, feed rate, and product rate have been found to be 2.5 atm, 150 s, 15 cm3/s, and 2.55 cm3/s, respectively. For the optimal conditions, purity of 95.45% and recovery of 77.3% have been achieved. It has also been found that a longer tubular unit with the length to diameter (L/D) ratio of 10.5 is advantageous. The estimated pressure drop across the bed has been found to be negligible. Power consumption and productivity have also been computed.
Źródło:
Polish Journal of Chemical Technology; 2010, 12, 2; 18-28
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal modelling, simulation and experimental validation of heat accumulation in a framed glass cabin
Autorzy:
Bera, T. K.
Dixit, S.
Bhattacharya, A.
Kumar, D.
Samantaray, A. K.
Powiązania:
https://bibliotekanauki.pl/articles/280907.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
car cabin
experimental thermal analysis
bond graph modelling
double layer glass window
Opis:
The present work concerns prediction of the amount of heat accumulation within the interior of a framed glass cabin and proposes some remedial measures to reduce temperature in the cabin. Various configurations such as double layer glass box filled with static air, static argon gas and flowing argon gas within the space between the two glass-layers are considered to conduct the experiments. Multi-physics bond graph models for these configurations are developed considering thermo-fluidic aspects. The experimental results are compared with the simulations using bond graph models. Though, direct application to a vehicle is not made, without loss of generality, the modelling and experimental procedure can be extended to analyze the heat accumulation inside a vehicle cabin when the vehicle is parked under direct sunlight.
Źródło:
Journal of Theoretical and Applied Mechanics; 2017, 55, 3; 911-922
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ferrofluid flow due to a rotating disk in the presence of a non-uniform magnetic field
Autorzy:
Bhandari, A.
Kumar, V.
Powiązania:
https://bibliotekanauki.pl/articles/265387.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
siła magnesowania
pole magnetyczne
ciecz ferromagnetyczna
magnetization force
ferrofluid
rotating disk
magnetic field
Opis:
The flow of a ferrofluid due to a rotating disk in the presence of a non-uniform magnetic field in the axial direction is studied through mathematical modeling of the problem. Contour and surface plots in the presence of 10 kilo-ampere/meter, 100 kilo-ampere/meter magnetization force are presented here for radial, tangential and axial velocity profiles, and results are also drawn for the magnetic field intensity. These results are compared with the ordinary case where magnetization force is absent.
Źródło:
International Journal of Applied Mechanics and Engineering; 2016, 21, 2; 273-283
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of heat transfer properties of nanofluid flow over a shrinking surface through mathematical modeling
Autorzy:
Bhandari, A.
Pavan Kumar Pannala, R. K.
Powiązania:
https://bibliotekanauki.pl/articles/265571.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
magnetohydrodynamika
nanofluid
przepływ
ciepło
magnetohydrodynamics
velocity
3D flow
thermal and heat absorption effects
shrinking surface
Opis:
In the current study, a three dimensional incompressible magnetohydrodynamic (MHD) nanofluid flow over a shrinking surface with associated thermal buoyancy, thermal radiation, and heating absorption effects, as well as viscous dissipation have been investigated. The model has been represented in a set of partial differential equations and is transformed using suitable similarity transformations which are then solved by using the finite element method through COMSOL. The results for velocity and temperature profiles are provided for various values of the shrinking parameter, Biot’s number, heat generation/absorption parameter, thermal Grashof number, nanoparticle volume fraction, permeability parameter, magnetic parameter and radiation parameter.
Źródło:
International Journal of Applied Mechanics and Engineering; 2020, 25, 2; 40-56
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling and structural analysis of skull/cranial implant: beyond mid-line deformities
Autorzy:
Bogu, V. P.
Kumar, Y. R.
Khanara, A. K.
Powiązania:
https://bibliotekanauki.pl/articles/307070.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
ciśnienie wewnątrzczaszkowe
FEM
implant
intracranial pressure
finite element analysis
beyond mid-line defect
fixation points
Opis:
Purpose: This computational study explores modelling and finite element study of the implant under Intracranial pressure (ICP) conditions with normal ICP range (7 mm Hg to 15 mm Hg) or increased ICP (>I5 mm Hg). The implant fixation points allow implant behaviour with respect to intracranial pressure conditions. However, increased fixation points lead to variation in deformation and equivalent stress. Finite element analysis is providing a valuable insight to know the deformation and equivalent stress. Methods: The patient CT data (Computed Tomography) is processed in Mimics software to get the mesh model. The implant is modelled by using modified reverse engineering technique with the help of Rhinoceros software. This modelling method is applicable for all types of defects including those beyond the middle line and multiple ones. It is designed with eight fixation points and ten fixation points to fix an implant. Consequently, the mechanical deformation and equivalent stress (von Mises) are calculated in ANSYS 15 software with distinctive material properties such as Titanium alloy (Ti6Al4V), Polymethyl methacrylate (PMMA) and polyether-ether-ketone (PEEK). Results: The deformation and equivalent stress results are obtained through ANSYS 15 software. It is observed that Ti6Al4V material shows low deformation and PEEK material shows less equivalent stress. Among all materials PEEK shows noticeably good result. Conclusions: Hence, a concept was established and more clinically relevant results can be expected with implementation of realistic 3D printed model in the future. This will allow physicians to gain knowledge and decrease surgery time with proper planning.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 1; 125-131
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Stannous-Cerium Oxide Nanocomposites as Nanofilm, Nanodot and Nanorod
Autorzy:
Budhiraja, N
Sharma, A.
Kumar, S.
Kaur, A.
Unikrishnan, N. V.
Powiązania:
https://bibliotekanauki.pl/articles/411664.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
nanofilms
Nanowires
nanoparticles
Crystallography
Topography
Opis:
In the present paper, main emphasis is given to synthesize the Stannous-Cerium oxide nanocomposites in nanofilms, nanodots and nanorods by Chemical bath method, Chemical drop method and Chemical rolling Method. These nanocomposite materials are synthesized on a glass substrate at 100 °C temperature. Crystallography investigation of these materials is done by X-ray diffraction (XRD) which reveals that average grain size is 58.9 nm and 62.3 nm for nanofilms and nanodots on glass substrate respectively whereas XRD diffraction for nanorod on glass substrate reveals that material is amorphous in nature.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 14; 69-79
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł

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