21:I[432972,["/_next/static/chunks/bb923814e1f4d2e9.js","/_next/static/chunks/dd3ee9f5b7716ca6.js","/_next/static/chunks/4204a0ae82542ca8.js","/_next/static/chunks/1270dead247da766.js","/_next/static/chunks/6e1aa89a642f40be.js","/_next/static/chunks/2d7aa753e81324a8.js","/_next/static/chunks/8ffd0b71567920d8.js","/_next/static/chunks/67ea6dfd21f16c5f.js","/_next/static/chunks/24eb4379f68013fd.js","/_next/static/chunks/b8cd775ffdf935bd.js","/_next/static/chunks/983103cd9eb7b428.js","/_next/static/chunks/263f2cdcb9aa2341.js","/_next/static/chunks/294b9525248c8e5f.js"],"default"] 22:T41b,Direct synthesis of light olefins from syngas (STO) using a bifunctional catalyst composed of oxide and zeolite has attracted extensive attention in both academia and industry. It is highly desirable to develop robust catalysts that could enhance the CO conversion while simultaneously maintain high selectivity to C2-C4 olefins. Herein, we report a bifunctional catalyst consisting of ZnCr binary oxide (ZnCrO_x) and low-Si AlPO-18 zeolite, showing both satisfying selectivity to C2-C4 olefins of 45.0% (86.7%, CO₂ free) and high olefin/paraffin ratio of 29.9 at the CO conversion of 25.2% under mild reaction conditions (4.0 MPa, 390 °C). By optimizing the reaction conditions, the CO conversion could be markedly increased to 49.3% with a slight drop in selectivity. CD₃CN/CO-FTIR characterizations and theoretical calculations demonstrate that low-Si AlPO-18 zeolite has lower acid strength, and is therefore less reactive toward the hydride transfer in the STO reaction, leading to a higher olefin/paraffin ratio.23:T43b,Different from the isotropic Dirac cones existing in other two-dimensional (2D) materials, anisotropic Dirac cones have the merit of anisotropic carrier mobility for applications in direction-dependent quantum devices. Motivated by the recent experimental finding of an anisotropic Dirac cone in borophene, here we report a new 2D anisotropic Dirac cone material, B₂S monolayer, identified by using a global structure search method and first-principles calculation combined with a tight-binding model. The B₂S monolayer is found to be stable mechanically, thermally, and dynamically and exhibits an anisotropic Dirac cone exactly at the Fermi level, showing a Fermi velocity of 10⁶ m/s in the same order of magnitude as that of graphene. Moreover, B₂S monolayer is the first anisotropy Dirac cone material with a pristine honeycomb structure stabilized by S in free-standing conditions where each atom has four valence electrons on average being isoelectronic to C. This study would expand the Dirac cone material family with new features.24:T481,In this paper, we explore the relationship between time constraints and users' assessment of their search. A user experiment was conducted. Participants were asked to search under two conditions: with time constraint (TC) and with no time constraint (NTC). The results showed that time constraint did not significantly influence participants' assessment of task difficulty, but significantly influenced users' search confidence and their evaluation of search performance. Particularly, participants were less confident and considered their search performance worse in TC than in NTC conditions. We also found users acquired more new knowledge and had more positive affective states after searching in NTC than in TC conditions. Interestingly, we found time constraints also affect participants' anticipation of time needed to complete the task; participants thought they would need significantly less time to complete the search task when they were given time constraints than without time constraints. These preliminary results suggested that time constraints had remarkable influence upon users' perception of search tasks and their search experience.25:T41a,Among the 118 elements listed in the periodic table, there are nine superheavy elements (Mt, Ds, Mc, Rg, Nh, Fl, Lv, Ts, and Og) that have not yet been well studied experimentally because of th

#	Concept	H-Index	Publications	Citations
1	Engineering	2	2	24
2	Arts	1	1	12
3	Health Sciences	1	1	12
4	Medicine	1	1	12
5	Natural Sciences	1	1	12

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