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关键词： 女性主义   男性气质   性别理论   成长电影  

摘要： 成长电影描绘青少年主人公在冲撞中被成人世界接纳的过程.张猛的近作《阳台上》在成长电影的外衣下,实则是追寻父亲的冒险.本文通过女性电影理论、性别气质论述以及电影符号理论解读《阳台上》的性别再现.为了建构男性气质神话,母亲形象总是一再遭受贬损.可耐人寻味的是,影片中种种看似召回父权威严的书写却恰恰泄露了其虚无空洞的一面.导演在有意无意间,再现乃至深化了性别刻板印象,却又紧接着将其解构.

关键词： 高速公路   伸缩缝   病害处治   公路养护  

摘要： 针对高速公路伸缩缝病害问题,首先对其产生原因进行了分析,指出车辆荷载作用、伸缩缝施工质量、养护工作等都有可能是高速公路伸缩缝病害的诱因.然后,根据导致伸缩缝病害的原因,提出相应的防治措施,以有效提高高速公路伸缩缝的施工质量,保证行车安全性和舒适度.

关键词： Y-27632   beta(2)-adrenoceptors   cAMP   Bronchial epithelial cells   Equine asthma   PROTEIN-COUPLED RECEPTOR   SMOOTH-MUSCLE   CA2+ SENSITIZATION   AIRWAY HYPERRESPONSIVENESS   ADRENERGIC-RECEPTORS   TRACHEAL   ASTHMA   TARGET   DESENSITIZATION   CONTRACTION  

摘要： The present study addresses the effect of the Rho-kinase (ROCK) inhibitor Y-27632 on the beta(2)-adrenoceptor density and beta-agonist-stimulated intracellular second messenger cAMP formation in primary equine bronchial epithelial cells (EBEC). Y-27632 significantly decreased the beta(2)-adrenoceptor number (B-max) without markedly affecting the receptor affinity (dissociation constant, K-D) to the radioligand [I-125]-iodocyanopindolol (ICYP). In contrast, Y-27632 augmented the beta-agonist-stimulated intracellular cAMP production. Herein, Y-27632 markedly increased the maximal cAMP responses (E-max) (isoproterenol > epinephrine > norepinephrine) but did not shift the beta-agonist concentration-effect curves to the left. The beta(2)-selective antagonist ICI 118.551 and the beta(1/)beta(2)-antagonsit propranolol but not the beta(1)-selctive antagonist CGP 20712A reversed the isoproterenol-induced cAMP formation equally in Y-27632-treated and control EBEC, suggesting the effect was merely related to the beta(2)-subtype. These results show that Y-27632 differentially regulates the receptor density and function. Thus, these findings provide the first evidence that the functional interaction of the beta(2)-adrenoceptor and Rho-kinase (ROCK) signaling pathways decreases the receptor expression but enhances receptor downstream cAMP formation. This differential regulation of the receptor density and function by Y-27632 should be further reconsidered with regard to the beneficial effect of the drug in asthma therapy.

关键词： Ligands  

摘要： A novel NNO pincer type ligand (E)-N'-(phenyl(pyridin-2-yl)methylene)isonicotinohydrazide, PPMINH, was synthesized by condensation of 2-benzoyl pyridine and isonicotinylhydrazide. The ligand PPMINH on reaction with metal ions Fe(III), Co(II) and Ni(II) yielded six metal derivatives. Different analysis tools like; Elemental analyses, ESI-MS, FT-IR, molar conductivity, UV-spectra, magnetic susceptibility, NMR and EPR measurement were used. Theoretical FT-IR, 1H NMR and 13C NMR of ligand and complex 6 exhibits quite a good correlation coefficient. EPR spectrum of complex 6 at LNT suggests octahedral geometry around Ni(II). The ligand and complexes were screened for antibacterial activity. DFT has been carried out to optimize the geometry of the ligand and complexes. The properties most relevant to their potential action as corrosion inhibitors has been calculated all parameters of DFT from the inhibitor molecule to the metal atom. The corrosion inhibition effect of compounds on mild steel in an acidic medium was studied for 24, 48, 72 h using weight loss measurement. © 2021 Elsevier B.V.

关键词： 道路桥梁   伸缩缝   材料  

摘要： 在道路桥梁施工过程中,伸缩缝尤为重要,在进行伸缩缝设计的过程中,不仅需要对行车安全问题进行考虑,还要对道路桥梁的作用进行考虑,在市政道路桥梁工程建设的过程中,伸缩缝建成后会增加地下水渗漏的可能性,因此,在进行市政道路桥梁工程建设的过程中,就需要对各种施工技术进行重视,下文就主要的伸缩缝施工技术相关问题进行了阐述.