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Tytuł:
A DFT study or the relationship between the electronic structure and the antiplasmodial activity of a series of 4-anilino-2-trichloromethylquinazolines derivatives
Autorzy:
Anatovi, Wilfried
Kpotin, Gaston A.
Kuevi, Urbain A.
Houngue-Kpota, Alice
Atohoun, Guy S.
Mensah, Jean-Baptiste
Gómez-Jeria, Juan S.
Powiązania:
https://bibliotekanauki.pl/articles/1178269.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
4-anilino-2-trichloromethylquinazolines
DFT
KPG method
QSAR
antiplasmodial
Opis:
A theoretical study of the relationships between the electronic structure and the antiplasmodial activity of a series of 4-anilino-2-trichloromethylquinazolines derivatives on plasmodium genes was carried out. The electronic structure of molecules was calculated at the B3LYP/6-31G(d,p) level with full geometry optimization. A statistically significant equation (R = 0.98, R² = 0.96, adj-R² = 0.94, F (12, 20) = 43.49 (p < 0.000001) and SD = 0.12) was obtained relating the variation of the biological activity with the variation of a set of local atomic reactivity indices. Based on the analysis of the results, a two-dimensional antiplasmodial pharmacophore was proposed. The process seems to be orbital and charge controlled.
Źródło:
World Scientific News; 2017, 88, 2; 138-151
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of innovative biopolymers designed for bone regeneration applications and in vitro study of their biocompatibility and osteogenic capacity on human bone marrow mesenchymal stem cells
Autorzy:
Basile, M. S.
Gomez d'Ayala, G.
Laurienzo, P.
Malinconico, M.
Oliva, A.
Powiązania:
https://bibliotekanauki.pl/articles/284365.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
functionalization of poly(ε-caprolactone)
bone marrow mesenchymal stem cells
Opis:
In the frame of a project aiming to the improvement of the properties of biodegradable polyester-based devices, designed for bone regeneration, we have prepared and characterized novel composites based on poly(ε-caprolactone) (PCL). In particular, we report in this paper the functional changes made through radical grafting on PCL to obtain the less hydrophobic derivatives, PCL-MA-GMA [maleic anhydride (MA)-glycidylmethacrylate (GMA)] and PCL-DMAEA [N-(dimethyl-amino)ethylacrylate]. In addition, we studied in vitro the biocompatibility and the osteogenic capacity of these novel polyesters on human bone marrow (BM) mesenchymal stem cells (MSC).
Źródło:
Engineering of Biomaterials; 2012, 15, 113; 13-15
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of layouts of PDC cutters in core bit drilling
Autorzy:
Buitrago Gomez, L. A.
Miska, S. Z.
Ziaja, M. B.
Powiązania:
https://bibliotekanauki.pl/articles/299255.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
PDC cutter
cutters layout
PDC bit
coring
drilling efficiency
Opis:
Over the past two decades, various single cutter force models have been developed that consider formation properties and bit characteristics. These models have been extensively used to describe the interaction of a Polycrystalline Diamond Compact (PDC) bit with formation rocks; however, their use to predict bit drilling efficiency is usually inadequate. There is an ample of field evidence that the density and layouts of PDC cutters affect drilling efficiency. Still, however, there is no reliable model of the PDC bit performance allowing determination of these bit design features for a specific bit's applications. In order to better understand the relationship between rock properties and PDC cutter layouts for different bit applications, laboratory drilling tests were performed with PDC core bits. The concept of an eight-blade PDC core bit was used to build a bit with a common body and replaceable heads. Core-bit design features such as: bit, cutter size, and cutter geometry were constant. In this study, the full-scale test rig facility at the University of Tulsa was used to obtain consistent data for six different layouts of PDC cutters. Operating parameters, such as the rate per minute (RPM) and weight on bit (WOB), were varied and performance parameters (rate of penetration (ROP) and bit torque (TQB)), were measured at each time step with the frequency of 10 Hz. The ROP were calculated as a function of bit displacement over time. All operating parameters were recorded as part of the data acquisition platform. Depth of Cut (DOC) was calculated from ROP, and the average WOB and TQB were estimated at each depth of cut. Tests were performed on two different rocks: Bedford and Carthage Limestones. For the purpose of comparing performance among different cutter layouts, we experiment with a maximum of four different depths of cut, which corresponded to four different weights on bit. The tested layouts allowed a constant maximum DOC per cutter of 0.25 in. Water was the drilling fluid for the entire experimental phase. The results showed that under the same drilling parameters, the cutter layout plays a key role in drilling efficiency. Strong linear relationships were found between DOC, WOB and TQB at different conditions that were characteristic of the specific bit design. Also, the PDC cutter layouts affected the relative drilling performance differently for different rock properties.
Źródło:
AGH Drilling, Oil, Gas; 2016, 33, 2; 341-360
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Availability and characteristics of the historical and recent aerial photographs and orthophotographs in Spain for the analysis of rill and gully erosion
Autorzy:
García, Jariego
Gutiérrez, Gómez
Lavado Contador, F.
Schnabel, S.
Powiązania:
https://bibliotekanauki.pl/articles/294358.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
rill and gully erosion
aerial photographs and orthophotograph
Spain
Opis:
Several kinds of methodologies and techniques have been used indeed in order to monitor rill and gully erosion processes. In this paper authors provide a guidance regarding the available aerial photographs and orthophotographs for rill and gully erosion studies in Spain and covering the whole country. A set of 8 different series of aerial photographs and orthophotographs were located in Spain. Their characteristics were quite diverse, differing in scales, formats and resolution. Most of the photographs and orthophotographs proved, at least, to be suitable for their use in studies of permanent gullies, allowing the monitoring of medium and long-term erosion rates since 1945.
Źródło:
Landform Analysis; 2011, 17; 51-55
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The origin and development of a valley bottom gully in a small rangeland catchment : influences of land use in the growth model
Autorzy:
Gómez Gutiérrez, A.
Schnabel, S.
Lavado Contador, F.
Jariego García, A.
Powiązania:
https://bibliotekanauki.pl/articles/294651.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
gully erosion
aerial photographs and orthophotographs
land use and vegetation cover
Opis:
In the present paper, 8 aerial orthophotographs were used for analysing the evolution of a valley bottom gully and its relationship with land use and vegetation cover in SW Spain. In addition, the growth model observed was compared with the literature. Results showed an increase in the area affected by gullying during the period by 314 m2 and a clear relationship between the areas affected by gullying and land use intensity was found.
Źródło:
Landform Analysis; 2011, 17; 65-70
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Viaje maldito en “La universidad desconocida”, de Roberto Bolaño
Cursed travel in Roberto Bolaño’s "La Universidad Desconocida"
Autorzy:
Gómez, Leila
Tuninetti, Ángel
Powiązania:
https://bibliotekanauki.pl/articles/1051171.pdf
Data publikacji:
2013-01-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
exile
poetry
travel
university
Mexico
Barcelona
cursed poet
Opis:
This paper focuses on the seldom studied poetry of Roberto Bolaño, using "La Universidad Desconocida", the exhaustive compilation published posthumously in 2007. Although Bolaño received wide recognition and many awards for his novels, he defined himself as a poet. In his poetry, we find the same topics and tendencies that he developed in the characters and plots of his narratives. A prime example is "Los detectives salvajes", a novel about a group of young rebel poets in the Mexico of the seventies. Bolaño’s poet characters, as well as his travels, exiles and criticisms of the literary establishment, take on a new light when compared alongside his poetry. this article explores the modes of poetic production as understood by Bolaño, as a way of life outside universities, the literary canon, and any other institutional networks. Instead, his poetic production is marked by the figure of Arthur Rimbaud as the archetype of the cursed poet.
Źródło:
Studia Romanica Posnaniensia; 2013, 40, 2; 63-73
0137-2475
2084-4158
Pojawia się w:
Studia Romanica Posnaniensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
China’s “One Belt, One Road Initiative”: challenges and requirements for its successful implementation in Central Asia
Chińska inicjatywa „jeden pas, jedna droga”: wyzwania i wymagania dotyczące jej skutecznego wdrożenia w Azji Środkowej
Autorzy:
Gómez Martos, Francisco
Powiązania:
https://bibliotekanauki.pl/articles/616304.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
One Belt
One Road Initiative
Silk Road Economic Belt and Central Asia
Asian Infrastructure Investment Bank
Eurasian Economic Community
inicjatywa „jeden pas
jedna droga”
Ekonomiczny Pas Jedwabnego Szlaku i Azja Środkowa
Bank Inwestycyjny Infrastruktury Azjatyckiej
Eurazjatycka Wspólnota Gospodarcza
Opis:
Dwadzieścia pięć lat po rozwiązaniu byłego Związku Radzieckiego i ponownym zaistnieniu republik Azji Środkowej jako niezależnych państw region ten nadal jest sceną rywalizacji wielkich mocarstw (Rosji, Chin, Unii Europejskiej, USA, Indii, Japonii, Turcji i Iranu) konkurujących w swego rodzaju „nowej wielkiej grze”, mającej na celu zwiększenie wpływów geopolitycznych i gospodarczych w regionie. Trwające ukryte współzawodnictwo wyjaśniają jego geografia, zróżnicowane i bogate zasoby naturalne, takie jak ropa naftowa i gaz. Pomimo wspólnej przeszłości historycznej i kulturowej Azja Środkowa stanowi zrónicowany region o wieloetnicznej i wielojęzycznej strukturze oraz niskim stopniu integracji fizycznej, gospodarczej i handlowej. Brak wzajemnego zaufania, utrzymujące się napięcia dotyczące granic oraz wykorzystania i współużytkowania zasobów naturalnych, a także różne poziomy wyników gospodarczych stanowiły jak dotąd zagrożenie dla rozwoju prawdziwej współpracy regionalnej. W tym kontekście chińska inicjatywa OBOR (One Belt One Road – jeden pas, jedna droga), mająca na celu rozwój szybkiego transportu, teoretycznie mogłaby – w przypadku właściwej realizacji – poprawić połączenia międzyregionalne, rozwijając w ten sposób rynek Azji Centralnej oraz wspierając współpracę międzyrządową i kontakty międzyludzkie w regionie. Czy możemy w takim razie spodziewać się, że ambitna chińska inicjatywa OBOR zwiększy stabilność geopolityczną i pomoże uzyskać wspólne korzyści gospodarcze i handlowe w Azji Środkowej? Jakie są przesłanki, które należałoby spełnić? Autor szczegółowo analizuje pewne kluczowe wymagania polityczne, gospodarcze i instytucjonalne niezbędne w celu skutecznego wdrożenia strategii OBOR stwierdzając jednak, że trzy lata po uruchomieniu tego kluczowego instrumentu chińskiego modelu „globalizacji bez demokracji” jego wdrożenie stoi w obliczu poważnych problemów, budząc tym samym większe wątpliwości niż pewność.
Twenty five years after the dissolution of the former Soviet Union and the reemergence of the Central Asian Republics as independent States, this region continues to be the scene of rivalries amongst the big powers (Russia, China, the European Union, USA, India, Japan, Turkey and Iran) competing in a sort of a “new Grand Game” to increase their geopolitical and economic influence in the region. Its geography, diverse and rich natural resources, like oil and gas, explain the ongoing hidden rivalries. Despite its common historical and cultural past, Central Asia constitutes a heterogeneous region with a multiethnic and multi-linguistic composition and a low degree of physical, economic and trade integration. The lack of mutual trust, the persisting tension over borders and the use and sharing of natural resources, as well as different levels of economic performance have so far jeopardized the development of genuine regional cooperation. Against this background, the idea behind the Chinese OBOR Initiative to develop rapid transportation, if well implemented, could theoretically, by improving interregional connectivity, develop the Central Asia regional market and foster intergovernmental cooperation and people-to-people contacts within the region. In this context, could we expect that the ambitious Chinese OBOR Initiative will boost geopolitical stability and promote shared economic and trade benefits in Central Asia? What are the conditions for that need to be fulfilled?The author analyzes in depth certain crucial political, economic and institutional requirements for the successful implementation of the OBOR Strategy and concludes, however, that three years after the launching of this crucial instrument of the Chinese “globalization without democracy” model, its implementation faces major problems and thus raises more doubts than certainties.
Źródło:
Przegląd Politologiczny; 2017, 3; 127-138
1426-8876
Pojawia się w:
Przegląd Politologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CHINA’S “ONE BELT, ONE ROAD” INITIATIVE: PROSPECTS AND CHALLENGES
CHIŃSKA INICJATYWA JEDNEGO PASA I JEDNEJ DROGI – WYZWANIA I PERSPEKTYWY
Autorzy:
Gómez Martos, Francisco
Powiązania:
https://bibliotekanauki.pl/articles/641871.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
One Belt
One Road Initiative
Silk Maritime Road
Asian Infrastructure Investment Bank
Eurasian Economic Community
Transpacific Partnership Agreement
Regional Comprehensive Economic Partnership
Mega trade blocks
European Union and China relations
inicjatywa „Jeden pas i jedna droga”
Morski Szlak Jedwabny
Azjatycki Bank Inwestycji Infrastrukturalnych
Euroazjatycka Wspólnota Gospodarcza
Partnerstwo Transpacyficzne
Regionalne Kompleksowe Partnerstwo Gospodarcze
Mega bloki handlowe
relacje Unia Europejska-Chiny
chiński plan Marshalla
Opis:
Inicjatywa „Jeden pas i jedna droga” (One Belt One Road – OBOR) Prezydenta Xi Jinpin jest istotnym instrumentem strategii mającej na celu utrzymanie kontroli wewnętrznej i stabilności politycznej oraz zdynamizować schorzałą chińską gospodarkę. Koncepcja OBOR jest ambitna, ale niejednoznaczna, zgodna z tradycyjną chińską zasadą “Ukryj nasze możliwości i daj nam czas”. W tym kontekście pojawia się pytanie czy ChRL jest gotowa na przestrzeganie prawa międzynarodowego i na bycie przewidywalnym i odpowiedzialnym partnerem politycznym i handlowym? Autor analizuje perspektywy i wyzwania chińskiej strategii i stara się dociec jakie są rzeczywiste cele tego projektu, który może przynieść potencjalne korzyści, ale także stanowić poważne zagrożenie dla jej azjatyckich sąsiadów i całej społeczności międzynarodowej.
The launching of “One Belt, One Road” (OBOR) Initiative by president Xi Jinpin is an essential instrument of the Strategy aiming to maintain the internal control and political stability and dynamises an ailing Chinese economy. The concept of OBOR is ambitious but ambiguous, perfectly in line with traditional Chinese pattern: “Hide our capabilities and bide our time.” In this context, a question is posed: Is China ready to abide by international law and be a reliable political and trade partner? The author analyzes the prospects and challenges of the Chinese Strategy and try to identify what are the real objectives of this project which may bring potential benefits but also important risks for its Asian neighbors and the international community at large.
Źródło:
Przegląd Strategiczny; 2017, 10; 321-334
2084-6991
Pojawia się w:
Przegląd Strategiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency of Software Testing Techniques: A Controlled Experiment Replication and Network Meta-analysis
Autorzy:
Gómez, O. S.
Cortés-Verdín, K.
Pardo, C. J.
Powiązania:
https://bibliotekanauki.pl/articles/384107.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
software verification
software testing
controlled experiment
experiment replication
meta-analysis
network meta-analysis
quantitative synthesis
Opis:
Background. Common approaches to software verification include static testing techniques, such as code reading, and dynamic testing techniques, such as black-box and white-box testing. Objective. With the aim of gaining a better understanding of software testing techniques, a controlled experiment replication and the synthesis of previous experiments which examine the efficiency of code reading, black-box and white-box testing techniques were conducted. Method. The replication reported here is composed of four experiments in which instrumented programs were used. Participants randomly applied one of the techniques to one of the instrumented programs. The outcomes were synthesized with seven experiments using the method of network meta-analysis (NMA). Results. No significant differences in the efficiency of the techniques were observed. However, it was discovered the instrumented programs had a significant effect on the efficiency. The NMA results suggest that the black-box and white-box techniques behave alike; and the efficiency of code reading seems to be sensitive to other factors. Conclusion. Taking into account these findings, the Authors suggest that prior to carrying out software verification activities, software engineers should have a clear understanding of the software product to be verified; they can apply either black-box or white-box testing techniques as they yield similar defect detection rates.
Źródło:
e-Informatica Software Engineering Journal; 2017, 11, 1; 77-102
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical simulation of the influence of a fillet and a bulb on the secondary flow in a compressor cascade
Autorzy:
Hoeger, M.
Schmidt-Eisenlohr, U.
Gomez, S.
Sauer, H.
Müller, R.
Powiązania:
https://bibliotekanauki.pl/articles/1986762.pdf
Data publikacji:
2002
Wydawca:
Politechnika Gdańska
Tematy:
secondary flow
compressor cascade
fillet
bulb
Opis:
Large fillet radii are typically found on highly loaded compressor rotors to ensure structural integrity. The objective of this paper is to investigate the impact of such real geometry effects on the flow at the hub section. Investigations were performed numerically for the idealised case of a plane compressor cascade with the 3D Navier-Stokes code TRACE_S. Realistic inlet boundary layer displacement thickness and typical loading levels close to stall are considered at low inlet Mach numbers Ma1 = 0.23. A large fillet with a relative radius of 16% chord length is considered as well as a 3D leading edge bulb-configuration designed at TU Dresden. The results are discussed in terms of iso-Mach surfaces, secondary flow patterns and spanwise incidence and turning. A complex 3D vortex system rises from the fillet radius, which improves the aerodynamic behaviour of the cascade at the end-wall section. With the bulb configuration the suction surface horse-shoe vortex leg was demonstrated to weaken the undesirable cross flow and by that to reduce the hazard of corner stall.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 1; 25-37
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A finite element model of the L4-L5-S1 human spine segment including the heterogeneity and anisotropy of the discs
Autorzy:
Jaramillo, H.
Gomez, L.
Garcia, J. J.
Powiązania:
https://bibliotekanauki.pl/articles/951814.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
kręgosłup
metoda elementów skończonych
segment L4-L5-S1
krążek międzykręgowy
model hipersprężysty
intervertebral disc
L4-L5-S1 segment
finite element model
human spine
hyperelastic model
Opis:
With the aim to study disc degeneration and the risk of injury during occupational activities, a new finite element (FE) model of the L4-L5-S1 segment of the human spine was developed based on the anthropometry of a typical Colombian worker. Beginning with medical images, the programs CATIA and SOLIDWORKS were used to generate and assemble the vertebrae and create the soft structures of the segment. The software ABAQUS was used to run the analyses, which included a detailed model calibration using the experimental step-wise reduction data for the L4-L5 component, while the L5-S1 segment was calibrated in the intact condition. The range of motion curves, the intradiscal pressure and the lateral bulging under pure moments were considered for the calibration. As opposed to other FE models that include the L5-S1 disc, the model developed in this study considered the regional variations and anisotropy of the annulus as well as a realistic description of the nucleus geometry, which allowed an improved representation of experimental data during the validation process. Hence, the model can be used to analyze the stress and strain distributions in the L4-L5 and L5-S1 discs of workers performing activities such as lifting and carrying tasks.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 2; 15-24
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
M.J. Peláez, P.Z. Moral, M.E. Gómez Rojo, M. del Carmen Amaya Galván, C.C. Rodriges, Una investigación sobre la historia de la Asociación Española de Derecho Marítimo
Autorzy:
k, Leonard Ł u k a s z u
Powiązania:
https://bibliotekanauki.pl/articles/706411.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Prawo Morskie; 2013, XXIX
0860-7338
Pojawia się w:
Prawo Morskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of curing temperature in the alkali-activated blast-furnace slag paste and their structural influence of porosity
Autorzy:
Medina-Serna, T. J.
Arredondo-Rea, S. P.
Gómez-Soberón, J. M.
Rosas-Casarez, C. A.
Corral-Higuera, R.
Powiązania:
https://bibliotekanauki.pl/articles/103278.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
activation of geopolymers
alternative materials
concrete friendly
curing temperature
maturation of hydration
Opis:
Due to the environmental problem posed by the use of Portland cement as construction material, it becomes necessary the search for supplementary cementitious materials that mitigate the ecological damage caused by it. Because the chemical similarity and the high cementitious powers of the blast furnace slag, it is used in the generation of geopolymers in a cement total replacement. This research focused on the study of the influence of the curing conditions on the final properties of blast furnace slag establishing three variables: no cured process (N-C), cured of controlled temperature of 45°C (CT45-C) and room temperature cure (RT-C); evaluating the mechanical behavior until 28 days of age and the water porosity index. The results show that geopolymers based on blast furnace slag has a behavior similar to hydration maturity of Portland cement and curing process decreases the porosity; On the other hand, applying a controlled temperature generates densest resistant pastes such as the variable CT45-C which reach the highest value of resistance in all curing ages.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 31; 74-79
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New concrete additive by chemical recycling of PET
Autorzy:
Mendivil-Escalante, J M
Almaral-Sánchez, J L
Gómez-Soberón, J M
Arredondo-Rea, S P
Corral-Higuera, R
Castro-Beltrán, A
Cabrera-Covarrubias, F G
Powiązania:
https://bibliotekanauki.pl/articles/102237.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
concrete admixture
glycolysis
polymeric resins
polyethylene terephthalate
Opis:
Due to the problem that represents the accelerated production of waste from the consumption of polyethylene terephthalate (PET), it becomes necessary to look for alternative solutions; chemical recycling is a suitable method for conversion into a material with potential application in concrete additive, such as unsaturated polyester resins; with the above improvements and conservation of non-renewable raw materials can reduce the environmental impact. This investigation was focused on obtaining the synthesis of a polymeric resin by the method of glycolysis, and their characterization by Infrared Spectroscopy (FT-IR); the results show that the recycled materials (PET and its processing) are similar to reagents made from primary materials so that it is considered feasible to use in the intended application.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 23; 1-5
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reviews: Women’s Everyday Life and Their Life Stories in the Time of Communism: A Comparative Study Between Poland, Romania, and the Former German Democratic Republic (GDR)
Autorzy:
Mendoza, Miguel Angel Gomez
Powiązania:
https://bibliotekanauki.pl/articles/2056556.pdf
Data publikacji:
2021-12-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Źródło:
Studia Historiae Oeconomicae; 2021, 39; 266-269
0081-6485
Pojawia się w:
Studia Historiae Oeconomicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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