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3篇 您的检索式:作者名="Pawel Marciniak"
    题名 作者 年代 出处 被引量
1Laser-induced white-light emission from graphene ceramics–opening a band gap in graphene显示文摘Recent theoretical and experimental studies have indicated the existence of a new stable phase of carbon with mixed sp^(2) and sp^(3) hybridized bonds—diaphite.Such a two-layered structure with sp^(2)/sp^(3) bonds may be observed after the photostimulation of highly oriented pyrolytic graphene with femtosecond laser pulses.This hidden multistability of graphene may be used to create a semiconducting phase immersed in the semimetallic continuum,resulting in bandgap opening.We demonstrate that bandgap opening and light emission from graphene is possible using continuous-wave laser beams with wavelengths from the visible(405 nm)to the near-infrared range(975 nm).We demonstrate that without the application of cooling,the effective temperature of the emitting sample remains lower than 900 K,which is far below the value predicted by the theory of black-body radiation.Moreover,light emission from a graphene sample may be observed at temperatures as low as 10 K.Wieslaw Strek Bartlomiej Cichy Lukasz Radosinski Pawel Gluchowski Lukasz Marciniak Mikolaj Lukaszewicz Dariusz Hreniak 2015Light(Science & Applications)2015,4,1:6
2Myotropic activity and immunolocalization of selected neuropeptides of the burying beetle Nicrophorus vespilloides (Coleoptera: Silphidae)显示文摘Burying beetles (Nicrophorus sp.) are necrophagous insects with developed parental care. Genome of Nicrophorus vespilloides has been recently sequenced, which makes them interesting model organism in behavioral ecology. However, we know very little about their physiology, including the functioning of their neuroendocrine system. In this study, one of the physiological activities of proctolin, myosuppressin (Nieve? MS), myoinhibitory peptide (Trica-MIP-5) and the short neuropeptide F (Nicve-sNPF) in N. vespilloides have been investigated. The tested neuropeptides were myoactive on N. vespilloides hindgut. After application of the proctolin increased hindgut contraction frequency was observed (EC50 value was 5.47 x 10-8 mol/L). The other tested neuropeptides led to inhibition of N. vespilloides hindgut contractions (Nicve-MS: IC50 = 5.20 x 10~5 mol/L;Trica-MIP-5: IC50 = 5.95 x 10-6 mol/L;Nicvc-sNPF: IC50 = 4.08 x 10-5 mol/L). Moreover, the tested neuropeptides were immunolocalized in the nervous system of N. vespilloides. Neurons containing sNPF and MIP in brain and ventral nerve cord (VNC) were identified. Proctolin-immunolabeled neurons only in VNC were observed. Moreover, MIP-immunolabeled varicosities and fibers in retrocerebral complex were observed. In addition, our results have been supplemented with alignments of amino acid sequences of these neuropeptides in beetle species. This alignment analysis clearly showed amino acid sequence similarities between neuropeptides. Moreover, this allowed to deduce amino acid sequence of N. vespilloides proctolin (RYLPTa), Nicve-MS (QDVDHVFLRFa) and six isoforms ofNicve-MIP (Nicve-MIP-1一 DWNRNLHSWa;Nicve-MIP-2—AWQNLQGGWa;Nicve-MIP-3—AWQNLQGGWa;Nicve-MlP-4—AWKNLNNAGWa;Nicve-MIP-5—SEWGNFRGSWa;Nicve-MIP-6— DPAWTNLKGIWa;and Nicve-sNPF—SGRSPSLRLRFa).Arkadiusz Urbanski Jan Lubawy Pawel Marciniak Grzegorz Rosinski 2019Insect Science2019,26,4:1
3Cardioactive properties of Solanaceae plant extracts and pure glycoalkaloids on Zophobas atratus显示文摘Glycoalkaloids,生物学上活跃的第二等的代谢物由 Solanaceae 植物生产了,是对动物,昆虫和真菌的自然防卫。在这份报纸, glycoalkaloids 的效果在甲虫类之昆虫 Zophobas atratus F 上在 Solanaceae 植物(土豆,西红柿和黑龙葵属植物) 或纯商业 glycoalkaloids 的摘录介绍。被评估由在 vitro 并且在用心的 vivo 生物鉴定试验性的模型。每篇测试摘录导致了剂量依赖者 cardioinhibitory 效果。用最高的土豆和西红柿摘录集中(1 mmol/L ) 的孤立半的心引起了不可逆的心脏的拘捕的 Zophobas atratus 的灌注,当从黑龙葵属植物的摘录产生了快却可逆的拘捕时。纯商业 glycoalkaloids 与摘录相比引起了类似却不太明显的效果。我们的结果证明测试混合物的 bioactivity 取决于他们的结构并且当土豆和黑龙葵属植物的主要 glycoalkaloids 的联合被用于试用时,建议了 synergistic 相互作用的存在。令人惊讶地,西红柿的注射和在 Zophobas atratus 的 1-day-old 蛹的土豆摘录导致了可逆积极 chronotropic 效果并且减少两个阶段的持续时间(anterograde 并且后退) 心可收缩的活动。而且,这些摘录影响了心收缩的振幅。Emanuela Ventrella Pawel Marciniak Zbigniew Adamski Grzegorz Rosirnski Szymon Chowanski Patrizia Falabella Laura Scrano SabinoA. Bufo 2015Insect Science2015,22,2:0
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