Autor: Halim, A. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Modification of sandy soil hydrophysical environment through bagasse additive under laboratory experiment
Autorzy:: Abd El-Halim, A.A.
Kumlung, A.
Tematy:: modification
sandy soil
hydrophysical environment
physical property
laboratory experiment
sugar-cane
straw; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/26077.pdf Link otwiera się w nowym oknie
Opis:: Until now sandy soils can be considered as one roup having common hydrophysical problems. Therefore, a labo-ratory experiment was conducted to evaluate the influence of bagasse as an amendment to improve hydrophysical properties of sandy soil, through the determination of bulk density, aggregate-size distribution, total porosity, hydraulic conductivity, pore-space structure and water retention. To fulfil this objective, sandy soils were amended with bagasse at the rate of 0, 0.5, 1, 2, 3 and 4% on the dry weight basis. The study results demonstrated that the addition of bagasse to sandy soils in between 3 to 4% on the dry weight basis led to a significant decrease in bulk density, hydraulic conductivity, and rapid-drainable pores, and increase in the total porosity, water-holding pores, fine capillary pores, water retained at field capacity, wilting point, and soil available water as compared with the control treatment.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Analysis of Anxiety, Knowledge, and Beliefs Toward E-Learning During Covid-19: The Case of Science Teachers in Aceh, Indonesia
Autorzy:: Halim, A.
Irwandi, Irwandi
Yunisrina Qismullah, Yusuf
Yakob, M.
Tematy:: science teacher
e-learning
anxiety
knowledge
belief
education; Pokaż więcej
Wydawca:: Wydawnictwo Adam Marszałek
Powiązania:: https://bibliotekanauki.pl/articles/1964273.pdf Link otwiera się w nowym oknie
Opis:: The aim of this research is to analyze anxiety, knowledge, and belief toward e-learning acceptance, especially by science teachers in high schools in Aceh, Indonesia. About 117 teachers were randomly selected for this study. A questionnaire was used to collect data, and analyzed using the Likert scale. The results indicate that most teachers view the use of e-learning in teaching science to be positive. Despite the fact that only half of them are knowledgeable in the use of media and have concerns about some negative effects of e-learning on students, they still believed in the usefulness of e-learning in science education. Hence, more related research is recommended to further corroborate the findings of this study.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Phytoplankton and environmental variables as a water quality indicator for the beaches at Matrouh, South-Eastern Mediterranean Sea, Egypt: an assessment
Autorzy:: Gharib, S.M.
El-Sherif, Z.M.
Abdel-Halim, A.M.
Radwan, A.A.
Tematy:: abiotic environment
beach
biotic environment
community structure
diversity index
Egypt
environment variability
hydrochemical change
hydrographic change
marine environment
Matrouh beach
Mediterranean Sea
nutrient concentration
phytoplankton
water quality; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/48802.pdf Link otwiera się w nowym oknie
Opis:: This study was carried out to determine the water quality of the beaches at Matrouh, south-eastern Mediterranean Sea, Egypt, by studying environmental variables as well as phytoplankton abundance and community structure. Surface water samples were monitored from a series of beach sites over a period of five seasons during 2009–2010. A total of 203 phytoplankton species were identified from seven algal divisions. Seasonal differences in the quantitative and qualitative composition of the phytoplankton communities in the different sites were marked. Nutrient concentrations and phytoplankton abundances were found to be poorer than those of many other areas along Egyptian coast. The Shannon-Wiener Diversity Index classified Matrouh water as being between clean and moderately polluted, whereas the WQI demonstrated that it was between good and excellent. It can be concluded that the index based onWQI is currently more suitable than the phytoplankton species index for assessing the quality of the water of the Matrouh beaches.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Concentration of Copper and Lead in Market Milk and Milk Products of Bangladesh
Autorzy:: Shahriar, S. M. S.
Akther, S.
Akter, F.
Morshed, S.
Alam, M. K.
Saha, I.
Halim, M. A.
Hassan, M. M.
Tematy:: Heavy metal
copper
lead
milk
milk products; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/412537.pdf Link otwiera się w nowym oknie
Opis:: The aim of this work is to detect and estimate the level of selected heavy metals (copper and lead) in milk and milk products in Chittagong City Corporation Areas of Bangladesh. The most important milk and milk products that are likely to be an important contributor to heavy metal exposure was selected. Total 30 samples of milk and milk products were analyzed among these 20 raw milk samples was collected from 20 dairy farms around industrial area in Chittagong City and 10 milk product samples were collected from market in Chittagong City. Detection and estimation of the level of copper and lead were carried out by using “Analytikjena Atomic Absorption Spectrophotometer, model: ZEEnit700P, Germany”. It was found that, most of all milk samples contain copper and lead copper and lead. The content of copper in most of all raw milk and milk products were in the range from 0.02 mg/kg to 0.25 mg/kg. The highest level of copper was found 0.244 mg/kg in milk products. The concentration of lead in milk and milk products were in the range from 0.007 mg/kg to 0.02 mg/kg. The highest concentration of lead was found 0.019 mg/kg in raw milk. These values were compared with standard allowable limit and also with the corresponding values of different countries available in literature.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Development of Prolonged Standing Strain Index to Quantify Risk Levels of Standing Jobs
Autorzy:: Halim, I.
Omar, A. R.
Tematy:: prolonged standing strain index (PSSI)
standing jobs
muscle fatigue
comfort
control measures; Pokaż więcej
Wydawca:: Centralny Instytut Ochrony Pracy
Powiązania:: https://bibliotekanauki.pl/articles/90704.pdf Link otwiera się w nowym oknie
Opis:: Many occupations in industry such as metal stamping workers, electronics parts assembly operators, automotive industry welders, and lathe operators require working in a standing posture for a long time. Prolonged standing can contribute to discomfort and muscle fatigue particularly in the back and legs. This study developed the prolonged standing strain index (PSSI) to quantify the risk levels caused by standing jobs, and proposed recommendations to minimize the risk levels. Risk factors associated with standing jobs, such as working posture, muscles activity, standing duration, holding time, whole-body vibration, and indoor air quality, were the basis for developing the PSSI. All risk factors were assigned multipliers, and the PSSI was the product of those multipliers. Recommendations for improvement are based on the PSSI; however, extensive studies are required to validate their effectiveness.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Deep Learning Can Improve Early Skin Cancer Detection
Autorzy:: Mohamed, Abeer
Mohamed, Wael A.
Zekry, Abdel Halim
Tematy:: technology
dermoscopic lesions
convolutional
neural network
ISIC dataset
deep learning
neural networks; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/963798.pdf Link otwiera się w nowym oknie
Opis:: Skin cancer is the most common form of cancer affecting humans. Melanoma is the most dangerous type of skin cancer; and early diagnosis is extremely vital in curing the disease. So far, the human knowledge in this field is very limited, thus, developing a mechanism capable of identifying the disease early on can save lives, reduce intervention and cut unnecessary costs. In this paper, the researchers developed a new learning technique to classify skin lesions, with the purpose of observing and identifying the presence of melanoma. This new technique is based on a convolutional neural network solution with multiple configurations; where the researchers employed an International Skin Imaging Collaboration (ISIC) dataset. Optimal results are achieved through a convolutional neural network composed of 14 layers. This proposed system can successfully and reliably predict the correct classification of dermoscopic lesions with 97.78% accuracy.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Attributes of Occupational Injury Among Workers in the Chemical Industry and Safety Issues
Autorzy:: Khan, M. M. A.
Halim, Z. I.
Iqbal, M.
Tematy:: attribute
occupational injury
workers
chemical industry
safety issues
uraz
przemysł chemiczny
zagrożenia zdrowia
Bangladesz
zagrożenia chemiczne; Pokaż więcej
Wydawca:: Centralny Instytut Ochrony Pracy
Powiązania:: https://bibliotekanauki.pl/articles/90576.pdf Link otwiera się w nowym oknie
Opis:: Case-study research was carried out with a view to find the attributes of occupational injury among workers in the chemical industry and to enhance safety issues. Injury data were collected and processed in terms of different variables, such as age, gender, skills, type of hazard, etc. Pareto analysis was then applied to find a pattern of occupational injury among the workers. The study revealed that 79.52% of the injured workers were in the 40–59 age group; 57.14% of accidents occurred during the 1st shift; 73.26% of accidents caused injury to hands, feet, chest to thigh, arms and eyes; and 70.93% of injuries were caused by pumps, carrying and lifting, vehicles, pipelines, valves, and grinding. Surprisingly, no one was injured in the group of temporary workers. The paper also provides specific suggestions followed by some action plans.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre
Autorzy:: Beshley, V.
Viana, A.
Sangiorgi, P.
Pavletić, L.
Ferrand, G.
Prast, J.
De Angelis, A.
Alves Batista, R.
Biland, A.
Strišković, J.
Yanagita, S.
Brill, A.
Weniger, C.
Meyer, M.
Stolarczyk, T.
Hernández Cadena, S.
Boisson, C.
Morcuende-Parrilla, D.
Palatiello, M.
Vitale, V.
Sanchez, D.
Zaharijas, G.
van Eldik, C.
Gent, A.
Holder, J.
Agudo, I.
Mundell, C.
Sano, H.
Iarlori, M.
de Cássia dos Anjos, R.
Pumo, M. L.
Dmytriiev, A.
Yoshikoshi, T.
Vovk, I.
Mukherjee, R.
Janecek, P.
Gianotti, F.
Orlando, S.
Mirzoyan, R.
Sciacca, E.
Siejkowski, H.
Zhdanov, V. I.
Miener, T.
Antonelli, L. A.
Wierzcholska, A.
Miranda, J. M.
Leone, F.
Stanič, S.
Travnicek, P.
Zacharias, M.
Armstrong, T.
Grasso, D.
Moralejo, A.
Pareschi, G.
Rhode, W.
Çolak, M.
Bernardini, E.
Bordas, P.
Nosek, D.
López-Coto, R.
Leto, G.
Sánchez-Conde, M.
Casanova, S.
Mizuno, T.
Cascone, E.
Lombardi, S.
Chernyakova, M.
Gascon, D.
Vecchi, M.
Ventura, S.
Coronado-Blazquez, J.
Rodriguez Ramirez, J. C.
Orlando, E.
Suda, Y.
Miceli, M.
Caraveo, P.
Prokoph, H.
Quirrenbach, A.
Foffano, L.
Nagai, A.
Tosti, L.
Horan, D.
Rojas, G.
Green, J.
Ferrara, G.
Inoue, S.
Garczarczyk, M.
Siqueira, C.
Fukami, S.
Cotter, G.
Hnatyk, B.
Nozaki, S.
Asano, K.
Angüner, E. O.
Maurin, G.
Varner, G. S.
Martínez, M.
Bosnjak, Z.
Alispach, C.
Tejedor, L. A.
Williams, D. A.
Chudoba, J.
Pfrang, K.
Todero Peixoto, C. J.
Recchia, S.
Giglietto, N.
Markoff, S.
Russo, F.
Ballester, O.
Fiandrini, E.
Pérez-Romero, J.
Rando, R.
Coniglione, R.
Kubo, H.
Komin, N.
Feng, Q.
Adam, R.
Mariotti, M.
Pagliaro, A.
Maier, G.
Damone, L. A.
Rico, J.
Brown, A. M.
Rinchiuso, L.
Straumann, U.
Vuillaume, T.
Garcia, E.
della Volpe, D.
Berge, D.
Sokolenko, A.
Barrio, J. A.
de Oña Wilhelmi, E.
Ohishi, M.
Jurysek, J.
Horvath, P.
Saturni, F. G.
Ribó, M.
Rieger, F.
Rodriguez Fernandez, G.
Fioretti, V.
Gueta, O.
Cristofari, P.
Sarkar, S.
Vigorito, C. F.
Okumura, A.
Grillo, A.
Shalchi, A.
Burtovoi, A.
Acharyya, A.
Richtler, T.
Iocco, F.
Cerruti, M.
Fontaine, G.
Kerszberg, D.
De Martino, D.
Cauz, D.
Manicò, G.
Shellard, R. C.
Barkov, M.
Leigui de Oliveira, M. A.
Eckner, C.
Truzzi, S.
Delgado Giler, A. G.
Medina Miranda, D.
Ascasíbar, Y.
Nemmen, R.
Piano, G.
Vorobiov, S.
Zechlin, H.
Vázquez Acosta, M.
Berti, A.
Orienti, M.
Seglar-Arroyo, M.
Blazek, J.
Mangano, S.
Mallamaci, M.
Bozhilov, V.
Jamrozy, Marek
Will, M.
Suomijarvi, T.
Sanuy, A.
Fornieri, O.
Pantaleo, F. R.
López, M.
Laporte, P.
Marquez, P.
Tavecchio, F.
Zampieri, L.
Baquero Larriva, A.
Ambrosi, G.
Conte, F.
Morselli, A.
Pillera, R.
Knödlseder, J.
Renier, Y.
Sæther Hatlen, E.
Salesa Greus, F.
Romeo, G.
Stamerra, A.
Queiroz, F.
Vink, J.
Domínguez, A.
Reimer, O.
Nakamori, T.
Hrabovsky, M.
Giordano, F.
Bernlöhr, K.
Brun, P.
Lindfors, E.
Goldoni, P.
Ekoume, T. R. N.
Benito, M.
White, M.
Katarzyński, K.
Reisenegger, A.
Sliusar, V.
Di Pierro, F.
Depaoli, D.
Persic, M.
Barbosa Martins, V.
Ohtani, Y.
Balazs, C.
Rudak, B.
Luque-Escamilla, P. L.
Pe'er, A.
Servillat, M.
Tothill, N.
Prandini, E.
Jin, W.
Orlandini, M.
Becker Tjus, J.
Bregeon, J.
Iori, M.
Doro, M.
Carosi, A.
Orito, R.
Lenain, J.
Wagner, S. J.
de Souza, V.
Parmiggiani, N.
Burton, M.
Chen, A.
Blanch, O.
Pintore, F.
Silk, J.
Delgado, C.
Schussler, F.
Falceta-Goncalves, D.
Alfaro, J.
Costa, A.
Becerra, J.
Mbarubucyeye, J. D.
Fiori, M.
Santos, E. M.
Hrupec, D.
Nieto, D.
Poireau, V.
Teshima, M.
Mode, B.
Daniel, M. K.
Hassan, T.
Ostrowski, Michał
Schwanke, U.
Zavrtanik, M.
Romano, P.
Ebr, J.
Caproni, A.
Paredes, J. M.
Cameron, R.
Zakaria, A. A.
Patricelli, B.
Gourgouliatos, K.
Salina, G.
Vandenbroucke, J.
Verna, G.
Fegan, S.
Araudo, A.
Kobayashi, Y.
Gaggero, D.
Contreras, J. L.
Chikawa, M.
Gnatyk, R.
Prado, R. R.
Oka, T.
Edwards, T. D. P.
Vallage, B.
Beck, G.
Lopez, A.
Lamanna, G.
Scuderi, S.
Franco, F. J.
Halim, A.
Heller, M.
Wiemann, R.
Testa, V.
Biteau, J.
Fiasson, A.
Hughes, G.
Alfaro, R.
De Palma, F.
Loporchio, S.
Safi-Harb, S.
Catalani, F.
Humensky, T. B.
Kushida, J.
Yang, L.
Bocchino, F.
Tonev, D.
Razzaque, S.
Hovatta, T.
Arqueros, F.
Manganaro, M.
Chiaro, G.
Prouza, M.
Costantini, H.
Zdziarski, A. A.
Diebold, S.
Fedorova, E.
Mohrmann, L.
Ninci, D.
Zaric, D.
Capuzzo-Dolcetta, R.
Niemiec, J.
D'Aimath, A.
Petruk, O.
Jouvin, L.
Glicenstein, J.
Spencer, S.
Nikołajuk, M.
Martínez-Huerta, H.
Noda, K.
Biasuzzi, B.
Zavrtanik, D.
Słowikowska, A.
Barres de Almeida, U.
Molina, E.
Tibaldo, L.
Pagano, I.
Conforti, V.
Adams, C.
Kohri, K.
Mandat, D.
D'Ammando, F.
Amati, L.
Martí, J.
Zanin, R.
Pecimotika, M.
Watson, J.
Hütten, M.
Sol, H.
Vercellone, S.
Oya, I.
Bonneau Arbeletche, L.
Pilszyk, B.
Lohse, T.
Giavitto, G.
Cassol, F.
Fukui, Y.
Kazanas, D.
Granot, J.
Vergani, S.
Pohl, M.
Dazzi, F.
Evoli, C.
Rodriguez, J.
Capasso, M.
Brun, F.
Vallania, P.
Giuliani, A.
Carosi, R.
Montaruli, T.
Lapington, J.
Filipovic, M.
Pühlhofer, G.
Benbow, W.
Kissmann, R.
Bruno, P.
Mazin, D.
De Caprio, V.
Martínez, G.
Hofmann, W.
Di Venere, L.
Pietropaolo, E.
Marculewicz, M.
Bringmann, T.
Ong, R. A.
Ashley, M.
Hörandel, J.
Bertucci, B.
de Gouveia Dal Pino, E. M.
Sergijenko, O.
Giarrusso, M.
Walter, R.
Donini, A.
Malta Nunes de Almeida, R.
Ribeiro, D.
Rowell, G.
Santander, M.
Starling, R.
Inada, T.
Principe, G.
Zech, A.
Mach, E.
González, M. M.
White, R.
Bastieri, D.
Chaty, S.
Aramo, C.
Wischnewski, R.
Sharma, P.
Taylor, L.
Bulgarelli, A.
Gammaldi, V.
Ghalumyan, A.
Karukes, E.
Sadeh, I.
Martinez, O.
Piatteli, P.
Aguirre-Santaella, A.
Sawangwit, U.
Kherlakian, M. C.
Gunji, S.
Rainò, S.
Rizi, V.
Buscemi, M.
Seweryn, K.
De Lotto, B.
Galaz, G.
Bissaldi, E.
Živec, M.
Chiavassa, A.
Tokanai, F.
Vassiliev, V.
Aloisio, R.
Moderski, R.
Santos-Lima, R.
Chadwick, P.
Tosti, G.
Elsässer, D.
Minev, M.
Di Girolamo, T.
Maggio, C.
Vagelli, V.
Świerk, P.
Rosado, J.
Longo, F.
Przybilski, H.
Hiroshima, N.
Ohira, Y.
Bottacini, E.
Opis:: We provide an updated assessment of the power of the Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at the TeV scale, via the associated gamma-ray signal from pair-annihilating dark matter particles in the region around the Galactic centre. We find that CTA will open a new window of discovery potential, significantly extending the range of robustly testable models given a standard cuspy profile of the dark matter density distribution. Importantly, even for a cored profile, the projected sensitivity of CTA will be sufficient to probe various well-motivated models of thermally produced dark matter at the TeV scale. This is due to CTA's unprecedented sensitivity, angular and energy resolutions, and the planned observational strategy. The survey of the inner Galaxy will cover a much larger region than corresponding previous observational campaigns with imaging atmospheric Cherenkov telescopes. CTA will map with unprecedented precision the large-scale diffuse emission in high-energy gamma rays, constituting a background for dark matter searches for which we adopt state-of-the-art models based on current data. Throughout our analysis, we use up-to-date event reconstruction Monte Carlo tools developed by the CTA consortium, and pay special attention to quantifying the level of instrumental systematic uncertainties, as well as background template systematic errors, required to probe thermally produced dark matter at these energies.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation
Autorzy:: Fontaine, G.
Muraishi, H.
Harvey, M.
Lombardi, S.
Caprai, M.
De Caprio, V.
Brown, A. M.
Principe, G.
Shalchi, A.
Tonev, D.
Rodriguez Fernandez, G.
Nosek, D.
Foffano, L.
Komin, N.
White, M.
Niemiec, J.
Scherer, A.
Balmaverde, B.
Costantini, H.
Dmytriiev, A.
La Palombara, N.
Conte, F.
Orito, R.
Testa, V.
Osborne, J. P.
Vallage, B.
Bissaldi, E.
Fukui, Y.
Williams, D. A.
de Bony de Lavergne, M.
Bonanno, G.
Bi, B.
Bonnoli, G.
Boisson, C.
Nishijima, K.
Zavrtanik, D.
Fegan, S.
Pueschel, E.
Pohl, M.
Orienti, M.
Dournaux, J.
Fairbairn, M.
Diebold, S.
Díaz, C.
Tovmassian, G.
Buscemi, M.
Asano, K.
Karas, V.
Leto, G.
Giglietto, N.
Kohri, K.
Pietropaolo, E.
Gammaldi, V.
Persic, M.
López, M.
Vercellone, S.
Adam, R.
Angüner, E. O.
Parmiggiani, N.
Przybilski, H.
Rando, R.
Donini, A.
Pagliaro, A.
della Volpe, D.
Palatka, M.
Majczyna, A.
Mizuno, T.
Inada, T.
Alfaro, J.
Font, L.
Coronado-Blazquez, J.
Baquero Larriva, A.
Rhode, W.
Giordano, F.
Ribeiro, D.
Santander, M.
Nievas, M.
Lemoine-Goumard, M.
Spencer, S.
Kerszberg, D.
Alispach, C.
Mukherjee, R.
Acero, F.
Hnatyk, R.
Meyer, M.
Sawangwit, U.
Evoli, C.
Domínguez, A.
Kong, A.
Burton, M.
Sergijenko, O.
Takahashi, H.
Hörandel, J.
Gueta, O.
Świerk, P.
Inoue, S.
White, R.
De Palma, F.
Falceta-Goncalves, D.
Bertucci, B.
Hnatyk, B.
Elsässer, D.
Sano, H.
Vázquez Acosta, M.
Nozaki, S.
Jacquemont, M.
Cristofari, P.
Nemmen, R.
Richtler, T.
Eckner, C.
Nakamori, T.
Sokolenko, A.
Bernardini, E.
Lopez, A.
Gaggero, D.
Rizi, V.
Conforti, V.
Laporte, P.
Moderski, R.
Rudak, B.
Molina, E.
Hughes, G.
O'Brien, P.
Lyard, E.
Markoff, S.
Abdalla, H.
Nieto, D.
Vigorito, C. F.
de Cássia dos Anjos, R.
Sanchez, D.
Giarrusso, M.
Mitchell, A.
Araudo, A.
Wolter, A.
Pillera, R.
Stanič, S.
Carosi, R.
Barkov, M.
Franco, F. J.
Veh, J.
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Della Ceca, R.
Sharma, P.
Ghirlanda, G.
Rebert, E.
Peresano, M.
Schleicher, B.
Hoffmann, D.
Rodriguez Ramirez, J. C.
Cauz, D.
Jamrozy, Marek
Pilszyk, B.
Murach, T.
Salesa Greus, F.
Bulgarelli, A.
Travnicek, P.
Sol, H.
Djannati-Ataï, A.
Sciacca, E.
Hinton, J.
Straumann, U.
Moralejo, A.
Paneque, D.
González, J. M.
Ghalumyan, A.
Morselli, A.
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Biland, A.
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Pfrang, K.
De Angelis, A.
Reimer, O.
Opis:: The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for γ astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of γ cosmology that can be explored as part of the Key Science Projects of CTA, through simulated observations of active galactic nuclei (AGN) and of their relativistic jets. Observations of AGN with CTA will enable a measurement of γ absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshift z=2 and to constrain or detect γ halos up to intergalactic-magnetic-field strengths of at least 0.3 pG . Extragalactic observations with CTA also show promising potential to probe physics beyond the Standard Model. The best limits on Lorentz invariance violation from γ astronomy will be improved by a factor of at least two to three. CTA will also probe the parameter space in which axion-like particles could constitute a significant fraction, if not all, of dark matter. We conclude on the synergies between CTA and other upcoming facilities that will foster the growth of γ cosmology.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Tytuł:: Carbon nanotubes-based sensor for ammonia gas detection – an overview
Czujniki na bazie nanorurek węglowych do wykrywania obecności amoniaku – przegląd literatury
Autorzy:: Nurazzi, N. M.
Siti Zulaikha, N. Demon
Norhana, A. Halim
Syakir, Mohamad I.
Norli, Abdullah
Tematy:: ammonia
carbon nanotubes
chemical sensor
conductive polymer
nanocomposite
amoniak
nanorurki węglowe
czujnik chemiczny
polimer przewodzący
nanokompozyt; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Powiązania:: https://bibliotekanauki.pl/articles/1789927.pdf Link otwiera się w nowym oknie
Opis:: A sensitive, selective and reliable sensing techniques for ammonia (NH3) gas detection have been highly demanded since NH3 is both a commonly utilized gas in various industrial sectors, and considered as a toxic and caustic agent that can threat human health and environment at a certain level of concentrations. In this article, a brief on the fundamental working principles of sensor specifications of the analytes detection techniques relying has been reviewed. Furthermore, the mechanism of NH3 detection and recent progress in the development of advanced carbon nanotubes (CNTs)-based NH3 gas sensors, and their performance towards the hybridization with the conductive polymers was comprehensively reviewed and summarized. Finally, the future outlook for the development of highperformance NH3 sensors was presented in the conclusions part.
Amoniak (NH3) to gaz powszechnie stosowany w różnych sektorach przemysłu, jest toksyczny i żrący, a powyżej określonego poziomu stężeń może zagrozić ludzkiemu zdrowiu i środowisku, dlatego ciągle trwają poszukiwania czułych, selektywnych i niezawodnych metod wykrywania gazów amoniakalnych. W niniejszym artykule dokonano przeglądu specyfikacji i podstawowych zasad działania czujników stosowanych w technikach wykrywania takich analitów. Szczegółowo przeanalizowano też mechanizm wykrywania i niedawny postęp w opracowywaniu zaawansowanych czujników do wykrywania gazu NH3 , opartych na nanorurkach węglowych (CNTs), a także ich modyfikacje obejmujące hybrydyzację z polimerami przewodzącymi. Przedstawiono również perspektywy rozwoju wysoko wydajnych czujników NH3.
Dostawca treści:: Biblioteka Nauki

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