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3801por Nikbakht, Hamed, Latifi, Hamid, Parsanasab, Gholam-Mohammad, Taghavi, Majid, Riyahi, Maryam“…The fabricated polarizer is examined in the O, C, and L telecommunication frequency bands. This configuration achieves the high extinction ratio of 51.3 dB and its maximum insertion loss in the tested wavelengths is 1.79 dB. …”
Publicado 2019
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3802por Motsoeneng, Rapelang G., Kortidis, Ioannis, Ray, Suprakas Sinha, Motaung, David E.“…The SnO(2) hollow spheres demonstrated the highest sensing response (resistance ratio of 20) toward C(3)H(7)OH at low operating temperatures (75 °C) compared to other tested interference vapors and gases, such as C(3)H(5)O, C(2)H(5)OH, CO, NH(3), CH(4), and NO(2). This improved response can be associated with the higher surface area and intrinsic point defects. …”
Publicado 2019
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3803por Olennikov, Daniil N., Kashchenko, Nina I., Chirikova, Nadezhda K., Vasil’eva, Aina G., Gadimli, Aydan I., Isaev, Javanshir I., Vennos, Cecile“…Their structures were determined after mass fragmentation analysis as caffeoylquinic acids, flavone O-/C-glycosides, flavones, and flavonol aglycones. …”
Publicado 2019
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3804“…The solid-state structures of the salts of two substituted tryptamines, namely N-isopropyl-N-methyltryptaminium (MiPT) fumarate {systematic name: [2-(1H-indol-3-yl)ethyl](methyl)propan-2-ylazanium 3-carboxyprop-2-enoate}, C(14)H(21)N(2) (+)·C(4)H(3)O(4) (−), and 4-hydroxy-N-isopropyl-N-methyltryptaminium (4-HO-MiPT) fumarate monohydrate {systematic name: [2-(4-hydroxy-1H-indol-3-yl)ethyl](methyl)propan-2-ylazanium 3-carboxyprop-2-enoate monohydrate}, C(14)H(21)N(2)O(+)·C(4)H(3)O(4) (−)·H(2)O, are reported. Both salts possess a protonated tryptammonium cation and a 3-carboxyacrylate (hydrogen fumarate) anion in the asymmetric unit; the 4-HO-MiPT structure also contains a water molecule of crystallization. …”
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3805por Ben, Haoxi, Wu, Fengze, Wu, Zhihong, Han, Guangting, Jiang, Wei, Ragauskas, Arthur J.“…The elemental analysis indicated that the lower O/C value and higher H/C value represent a more valuable source of energy for pyrolysis oils than biomass. …”
Publicado 2019
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3806“…The ninhydrin reaction was conducted at acidic pH (1.5) and elevated temperature (160 (o)C) giving yields close to 100% for most common amino acids. …”
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3807“…Attenuated total reflectance Fourier transform infrared spectroscopy gauges the presence of many functional groups related to cellulose I and/or II (OH, C–O–C and –CH(2)), hemicelluloses (particularly C=O acetoxy ester band at 1732 cm(−1)), and lignin (OH phenolic, C(ar)-O and C=C(ar)) and provides qualitative information on the state of wood alteration by informing on the evolution of new former C=O bands. …”
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3808por Zhang, Shu, Cao, Xinyi, Liu, Chao, Li, Wei, Zeng, Wenfeng, Li, Baiwen, Chi, Hao, Liu, Mingqi, Qin, Xue, Tang, Lingyi, Yan, Guoquan, Ge, Zefan, Liu, Yinkun, Gao, Qiang, Lu, Haojie“…We used an N-glycopeptide method based on (18)O/(16)O C-terminal labeling to obtain 82 comparisons of serum from patients with HBV-related hepatocellular carcinoma (HCC) and liver cirrhosis (LC). …”
Publicado 2019
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3809“…Functional groups like C=O, N‒H, C‒N, O‒H, C‒H, C‒O, C-C, and ‒C‒CO‒C‒ were present in the structure of melanoidins from RF4, as determined by Fourier transform infrared (FT-IR) assay. …”
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3810por Zarandi-Miandoab, Leila, Hejazi, Mohammad-Amin, Bagherieh-Najjar, Mohammad-Bagher, Chaparzadeh, Nader“…The predicted optimal conditions for maximum β-carotene productivity and minimum total chlorophyll/β-carotene ratio were derived from the fitted model in 200 µmol photons m(-2)s(-1) light intensity, 25 ºC, 0.9 mM nitrate and 3.8 M NaCl. When the predicted condition was tested experimentally, the expected results were observed. …”
Publicado 2019
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3811por Zhang, Qinggang, Wang, Bo, Zheng, Weilin, Kong, Long, Wan, Qun, Zhang, Congyang, Li, Zhichun, Cao, Xueyan, Liu, Mingming, Li, Liang“…Here, we propose a facile strategy to synthesize ceramic-like stable and highly luminescent CsPbBr(3) NCs by encapsulating them into silica derived from molecular sieve templates at high temperature (600–900 (o)C). The obtained CsPbBr(3)-SiO(2) powders not only show high photoluminescence quantum yield (~71%), but also show an exceptional stability comparable to the ceramic Sr(2)SiO(4):Eu(2+) green phosphor. …”
Publicado 2020
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3812“…The connections between layers to consolidate the three-dimensional architecture are of the type C—H⋯O, C—H⋯S and nitro-O⋯π. The nature of the supramolecular association has been further analysed by a study of the calculated Hirshfeld surfaces, non-covalent interaction plots and computational chemistry, all of which point to the significant influence and energy of stabilization provided by the conventional hydrogen bonds.…”
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3813“…Generally, the stretching vibration of N–H and C–O of polysaccharide carboxylic acid was the key to affect its binding with anthracene and C–O–C in aliphatic ring participated in the complexation of DOM and pyrene.…”
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3814por Hoang, Son, Guo, Yanbing, Binder, Andrew J., Tang, Wenxiang, Wang, Sibo, Liu, Jingyue (Jimmy), Huan, Tran D., Lu, Xingxu, Wang, Yu, Ding, Yong, Kyriakidou, Eleni A., Yang, Ji, Toops, Todd J., Pauly, Thomas J., Ramprasad, Rampi, Gao, Pu-Xian“…This Pt SAC exhibits remarkable activity for oxidation of CO and hydrocarbons with 90% conversion at temperatures as low as ~160 (o)C under simulated diesel exhaust conditions while using 5 times less Pt-group metals than a commercial oxidation catalyst. …”
Publicado 2020
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3815por Wang, Hai-Xu, Wan, Qingyun, Low, Kam-Hung, Zhou, Cong-Ying, Huang, Jie-Sheng, Zhang, Jun-Long, Che, Chi-Ming“…Various spectroscopic techniques and DFT calculations suggest that the dialkylcarbene Ad ligand is unique compared to other common carbene ligands as it acts as both a potent σ-donor and π-acceptor; its unique electronic and structural features, together with the steric effect of the porphyrin macrocycle, make its Fe porphyrin complex 1a an active and robust catalyst for intermolecular diarylcarbene transfer reactions including cyclopropanation (up to 90% yield) and X–H (X = S, N, O, C) insertion (up to 99% yield) reactions.…”
Publicado 2019
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3816“…The results showed that all chitosan samples we gained are good about 80% degree of deacetylation, and pure mostly composed by carbon between (15,02% - 45.55%), nitrogen (4,17% - 12.28%) and oxygen (42.16% and 81.25%), with appearance of essential peaks for chitosan in Raman analysis: 470 cm(−1) → ν(C-C(=O)-C), 1000 cm(−1) → ν(C-H), 1800 cm(−1) → δ(C=CCOOR), δ(C=O), 2630 cm(−1) → δ(CH) rings, 3250 cm(−1) → ν(NH(2)). …”
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3817“…By coupling [4-(2)H]-NADH-recycling to an array of C=O, C=N, and C=C bond reductases, we demonstrate asymmetric deuteration across a range of organic molecules under ambient conditions with near-perfect chemo-, stereo- and isotopic selectivity. …”
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3818por Mohammed, Anber F., Andrei, Graciela, Hayallah, Alaa M., Abdel-Moty, Samia G., Snoeck, Robert, Simons, Claire“…The tricyclic HBG derivatives were devoid of inhibitory activity however several of the tricyclic PCV derivatives showed promising antiviral activity, in particular 9g (R = 4-MeO-C(6)H(4)) displayed good inhibitory activity (HSV-1 EC(50) 1.5 μM, HSV-2 EC(50) 0.8 μM) and retained inhibitory activity in HSV-1 TK(−) cells (EC(50) 0.8 μM). …”
Publicado 2019
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3819por Barbosa, Brenna de Sousa, dos Santos, Fernanda Araujo, do Macêdo, Luãn Barbalho, Izzo, Roberta Gonçalves, Fernandes, Denilsa Pires, Praxedes, Érika Almeida, Silva, Alexandre Rodrigues, Bezerra, Marcelo Barbosa“…The spermatozoa were subjected to 4ºC for 60 minutes, followed by 20 minutes in nitrogen vapors, and stored in a cryogenic cylinder. …”
Publicado 2020
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3820por Silva, Robespierre Augusto Joaquim Araújo, Batista, André Mariano, Arruda, Lúcia Cristina Pereira, de Souza, Helder Melo, Nery, Igor Henrique de Azevedo Valença, Gomes, Wilton Arruda, Soares, Pierre de Castro, Silva, Sildivane Valcácia, Guerra, Maria Madalena Pessoa“…Then, both SP+ and SP- samples were diluted in two SL extenders (extender A = 1% SL; extender B = 2% SL), cooled to 5ºC and stored for 48 hours. The sperm kinetics, evaluated by CASA, and plasma membrane integrity (PMI), acrosomal integrity (ACI) and high mitochondrial membrane potential (HMMP), evaluated by epifluorescence microscopy, were determined within five minutes after reaching 5°C (T0), as well as after 24 (T24) and 48 (T48) hours of storage. …”
Publicado 2019
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