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Littérature scientifique sur le sujet « Sp carbon chins »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 11 mars 2023

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Articles de revues sur le sujet "Sp carbon chins"

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Castelli, Ivano E., Nicola Ferri, Giovanni Onida et Nicola Manini. « Carbon sp chains in graphene nanoholes ». Journal of Physics : Condensed Matter 24, no 10 (21 février 2012) : 104019. http://dx.doi.org/10.1088/0953-8984/24/10/104019.

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Delodovici, Francesco, Daniel S. Choi, Mohamed Al Fahim, Larry A. Burchfield et Nicola Manini. « Carbon sp chains in diamond nanocavities ». Physical Chemistry Chemical Physics 21, no 39 (2019) : 21814–23. http://dx.doi.org/10.1039/c9cp03978c.

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Hu, Yun Hang. « Stability of sp carbon (carbyne) chains ». Physics Letters A 373, no 39 (septembre 2009) : 3554–57. http://dx.doi.org/10.1016/j.physleta.2009.07.067.

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Liu, Lingyu, Meng Hu, Chao Liu, Xiaowei Liang, Yilong Pan, Pan Ying, Zhisheng Zhao, Guoying Gao, Julong He et Yongjun Tian. « Novel carbon polymorphs with cumulative double bonds in three-dimensional sp–sp2 hybrid framework ». Physical Chemistry Chemical Physics 20, no 22 (2018) : 15022–29. http://dx.doi.org/10.1039/c8cp00107c.

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Завидовский, И. А., О. А. Стрелецкий, О. Ю. Нищак, А. А. Хайдаров et А. В. Павликов. « Удельное электросопротивление тонких углеродных пленок с различной долей sp-связей ». Журнал технической физики 90, no 1 (2020) : 149. http://dx.doi.org/10.21883/jtf.2020.01.48677.453-18.

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The technique of ion-plasma pulse-arc sputtering of graphite in a methane atmosphere has been employed to produce carbon films with different phase composition. Raman spectroscopy and transmission electron microscopy showed that increase of methane concentration in the vacuum deposition chamber leads to the growth of fraction containing sp-hybridized chains. In the investigated films structure, resistivity strongly correlates with the content of sp-hybridized carbon.
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Lucotti, A., M. Tommasini, M. Del Zoppo, C. Castiglioni, G. Zerbi, F. Cataldo, C. S. Casari et al. « Raman and SERS investigation of isolated sp carbon chains ». Chemical Physics Letters 417, no 1-3 (janvier 2006) : 78–82. http://dx.doi.org/10.1016/j.cplett.2005.10.016.

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Choi, Yongrok, Yunning Ma, Yu Zhao et Hyoungsuk Lee. « Inequality in Fossil Fuel Power Plants in China : A Perspective of Efficiency and Abatement Cost ». Sustainability 15, no 5 (1 mars 2023) : 4365. http://dx.doi.org/10.3390/su15054365.

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Quantifying the shadow price (SP) of CO2 emissions is the key to achieving China’s “double carbon” targets. Considering technology heterogeneity, this study applies stochastic frontier analysis combined with meta-frontier technology to estimate the environmental technical efficiency (ETE) and SP of CO2 emissions for China’s fossil fuel power plants from 2005 to 2015. This approach overcomes the lack of statistical inference and consistency of traditional methods and improves the reliability of results. The main results are as follows: (a) the average ETE of China’s power plants is 0.9444, indicating that inefficient production accounts for 5.66%. The difference in efficiency between the central and local groups is significant. (b) The national average SP of CO2 is 266.8 US dollars per ton, which is much higher than the carbon price in the emission trading system. This result implies the need to design a carbon trading price mechanism. (c) The distribution of SP shows obvious corporation and geographical characteristics that are closely related to the level of regional economic development. Finally, the findings provide policy implications for the improvement of the efficiency and abatement of costs of power plants and the determination of carbon prices.
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Дождиков, В. С., А. Ю. Башарин et П. Р. Левашов. « Исследование структуры градиентного аморфного углерода, полученного закалкой жидкого углерода ». Журнал технической физики 93, no 3 (2023) : 339. http://dx.doi.org/10.21883/jtf.2023.03.54844.206-22.

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A new method for obtaining graded amorphous carbon using quenching of a graphite melt on a diamond substrate is proposed. Using molecular dynamics modeling of liquid carbon quenching on a cold diamond substrate, it is shown that the amorphous carbon obtained in the experiment is a material with a strongly gradient structure and properties along the depth of the sample. This is due to the quenching rate decrease with the distance from the substrate in the range of 10^14-10^12 K/s. In this case, the density of amorphous carbon varies from 1.50 g/cm^3 to 1.93 g/cm^3. The spatial change in the structural characteristics of the obtained amorphous carbon was studied: the distribution of carbon atoms according to the degree of chemical bond hybridization (sp^1, sp^2, sp^3), the radial distribution function, the angular distribution function, and a statistical analysis of carbon rings were carried out. It is shown that at a pressure in liquid of 1 GPa, the carbon structure within the quenched zone changes from a highly porous structure with a large number of sp^1 chains of carbon atoms near the substrate to an amorphous graphene structure at the periphery.
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Mostaani, E., B. Monserrat, N. D. Drummond et C. J. Lambert. « Quasiparticle and excitonic gaps of one-dimensional carbon chains ». Physical Chemistry Chemical Physics 18, no 22 (2016) : 14810–21. http://dx.doi.org/10.1039/c5cp07891a.

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Liu, Zhen, Jing Li, Yitao Zhang, Huarui Gong, Ruixing Hou, Zhigang Sun et Zhu Ouyang. « Soil Microbes from Saline–Alkali Farmland Can Form Carbonate Precipitates ». Agronomy 13, no 2 (27 janvier 2023) : 372. http://dx.doi.org/10.3390/agronomy13020372.

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The formation of soil inorganic carbon in saline–alkali lands is of great significance for enhancing soil carbon sequestration. As for the formation mechanisms, in addition to the discovered abiotic mechanisms, the microbial mechanisms remain unclear. To address this, soil microbes were isolated from the saline–alkali farmland of the Yellow River Delta in north China. Then, their capacity for carbonate precipitation formation was determined. Ten microbial strains were obtained from the soil. Of these, seven strains (four bacterial strains and three fungal strains), belonging to Rhodococcus sp., Pseudomonas sp., Bacillus sp., Streptomyces sp., Aspergillus sp., Cladosporium sp., and Trichoderma sp., formed carbonate precipitates in the range of 89.77~383.37 mg. Moreover, the formation of carbonate precipitates was related to specific metabolisms by which microbes can raise the pH (from 7.20 to >8.00), suggesting that soil microbes that can enhance pH values by specific metabolisms containing the function of carbonate formation. Although an in situ experiment is needed to confirm such capacity, these results showed that soil bacteria and fungi existing in the saline–alkali farmland soil can form carbonate precipitates. The present study provided a microbial perspective for the mechanism of soil inorganic carbon formation, further implying a microbial potential of soil carbon sequestration in saline–alkali farmlands.
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Thèses sur le sujet "Sp carbon chins"

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CINQUANTA, EUGENIO LUIGI. « Synthesis, characterization and modeling of SP-SP2 carbon systems ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/30254.

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The core of this thesis is to provide an exhaustive identi cation of the vibrational properties of the cluster assembled sp-sp2 pure carbon material. This system consists in an amorphous sp2 matrix where spCCs are embedded and stabilized by sp2 fragments and it is synthesized by depositing, through the Supersonic Cluster Beam Deposition (SCBD) technique, sp-sp2 pure carbon clusters produced in a Pulsed Microplasma Cluster Source (PMCS). Although this material has been continuously studied for long time mainly by Raman spectroscopy, its vibrational features are not clear yet. In order obtain a better comprehension on the presence, structure and stability of spCCs in the sp-sp2 pure carbon, new experimental and theoretical eff orts are required. In particular it is necessary to clearly and unambiguously identify chains with di erent lengths and terminations in order to obtain a clear description of the physical and chemical properties characterizing the sp-sp2 material. Here I propose the synthesis, characterization and modeling of spCCs terminated by the simplest sp2 termination, i.e. Naphthalene, which well approximates an sp2 end-group present in the sp-sp2 system (graphene nano-ribbons). The combined experimental-theoretical study of the solution containing dinaphtylpolyynes with di erent length, performed through Infrared and Multi-Wavelength Resonant Raman spectroscopy combined with structural and vibrational ab-initio density-functional theory simulations, leads to the deep comprehension of the vibrational properties of the dinaphtylpolyynes. The model provided for dinaphtylpolyynes can be then used for the interpretation of the intricate results obtained by performing Infrared and Multi-Wavelength Resonant Raman experiment on the complex sp-sp2 pure carbon material.
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Quadras, Cascante Laura de. « Syntheses and properties of wire-like sp carbon chains capped by bis(phosphine)arylplatinum endgroups ». [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=98037894X.

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Kuhn, Helene. « Syntheses of diplatinum polyynediyl complexes with bis(phosphine)pentafluorophenylplatinum endgroups and dicobalt adducts of their sp carbon chains ». kostenfrei, 2009. http://d-nb.info/999425994/34.

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Quadras, Cascante Laura de [Verfasser]. « Syntheses and properties of wire-like sp carbon chains capped by bis(phosphine)arylplatinum endgroups / vorgelegt von Laura de Quadras Cascante ». 2006. http://d-nb.info/98037894X/34.

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Kuhn, Helene [Verfasser]. « Syntheses of diplatinum polyynediyl complexes with bis(phosphine)pentafluorophenylplatinum endgroups and dicobalt adducts of their sp carbon chains / vorgelegt von Helene Kuhn ». 2009. http://d-nb.info/999425994/34.

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Chapitres de livres sur le sujet "Sp carbon chins"

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Mulyani, Sri, Yoyok Budi Pramono et Isti Handayani. « Animal-Based Fermented Foods in Tropical Countries ». Dans Food Sustainability, Environmental Awareness, and Adaptation and Mitigation Strategies for Developing Countries, 80–101. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-5629-3.ch005.

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Tropical countries are rich in fermented animal foods, such as meat paste, shrimp paste, ronto, dadih, Nem chua, and chin som mok. The salt addition (2.4-3.0%) and carbon sources resulted in fermentation process at room temperature in tropical countries. The abundance of Salinococcus spp. during dough preparation and Lentibacillus spp. during fermentation contributes to the distinctive taste and umami of the shrimp paste. Lactic acid bacteria isolated from fermented animal foods have the potential as probiotics. Probiotics can play a role in increasing antioxidant activity and antimicrobial properties. Corynebacterium sp, Bacillus subtilis, and Lactobacillus plantarum were designated as functional starter cultures that could inhibit the growth of pathogenic bacteria (Staphylococcus aureus, Salmonella sp. and Escherichia coli). Animal based fermented foods in tropical countries are very diverse and have functional properties for health, related to antioxidant, probiotic, and antimicrobial properties.
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Actes de conférences sur le sujet "Sp carbon chins"

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« On the Mechanism of Using Carbon Dioxide as a Beneficial Concrete Admixture ». Dans "SP-329 : Superplasticizers and Other Chemical Admixtures in Concrete Proceedings Twelfth International Conference, Beijing, China". American Concrete Institute, 2018. http://dx.doi.org/10.14359/51711231.

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