A straightforward hydrothermal strategy for the controlled synthesis of monodisperse NaLa(MoO4)2 and NaLa(MoO4)2:Eu3+ bipyramid nanocrystals is presented using oleic acid/oleylamine as a mixed surfactant. Deprotonated oleic acid was demonstrated to be the decisive structure-directing agent for the bipyramid nanocrystals, and the bipyramid formation efficiency of the oleic acid/oleylamine combination was found to be the highest among the selected surfactant combinations. The roles of oleylamine in the synthesis of monodisperse bipyramid nanocrystals were elucidated. A possible oleic acid/oleylamine cooperative-controlled crystallization mechanism (CCM) for the growth of uniform tetragonal bipyramid NaLa(MoO4)2 nanocrystals is proposed on the basis of our experimental results. The formation of well-defined tetragonal bipyramid morphology is mainly due to the preferential adsorption of deprotonated oleic acid onto {101} and {001}, which changes the surface energy of crystal planes and leads to different growing rates along corresponding directions, while facilitating the formation of bipyramid morphology with exposed {101} faces. Fluorescent investigation revealed that NaLa(MoO4)2:Eu3+ bipyramid nanocrystals possess a dominated hypersensitive red emission 5 D 0 → 7 F 2 transition of Eu3+ at 613 nm.

The discovery of the Higgs boson with its mass around 125 GeV by the ATLAS and CMS Collaborations marked the beginning of a new era in high energy physics. The Higgs boson will be the subject of extensive studies of the ongoing LHC program. At the same time, lepton collider based Higgs factories have been proposed as a possible next step beyond the LHC, with its main goal to precisely measure the properties of the Higgs boson and probe potential new physics associated with the Higgs boson. The Circular Electron Positron Collider (CEPC) is one of such proposed Higgs factories. The CEPC is an e + e − circular collider proposed by and to be hosted in China. Located in a tunnel of approximately 100 km in circumference, it will operate at a center-of-mass energy of 240 GeV as the Higgs factory. In this paper, we present the first estimates on the precision of the Higgs boson property measurements achievable at the CEPC and discuss implications of these measurements.

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Residual properties of three-span continuous reinforced concrete slabs subjected to different compartment fires', Engineering Structures.