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On Kyle models with terminal trading constraints
Get PDFDepartment of Mathematical SciencesWe study Kyle models with terminal trading constraints that are variations of Kyle (1985) and Back (1992) where the insider has no trading constraint. We find that the constraint produces new features to our model. First, it turns out that we need a new state process in the structure of equilibria. Second, we show that our insider places a block order at terminal time, \Delta \theta_T =\tilde{a} ??? \theta_{T-}, to satisfy her constraint. We prove the existence of equilibria in both discrete time and continuous time settings. For the continuous time model, we establish the explicit equilibrium by deriving an autonomous system of first-order nonlinear ordinary differential equations (ODEs). Moreover, we obtain results associated with empirical findings, for example, autocorrelated aggregate holdings, decreasing price impact function, and U-shaped
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No full textSchool of Energy and Chemical Engineering (Energy Engineering)clos
Metal microgrid embedded transparent electrode for large-scale perovskite photovoltiacs
No full textSchool of Energy and Chemical Engineering (Energy engineering)clos
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No full textSchool of Energy and Chemical Engineering (Energy Engineering)The bottom electron transport layer (ETL) is important in determining both efficiency and stability of n???i???p structured perovskite solar cells (PSCs). Tin dioxide (SnO2) has been demonstrated as one of the promising ETL for high-efficient PSCs. However, their inherent surface defects strongly interfere with interfacial carrier extraction and upper perovskite crystallization. Here, we introduce the multi-passivation method with SnCl4 on the SnO2 ETL surface. The SnCl4 passivated not only the SnO2 surface but also the bottom surface of the upper perovskite layer, simultaneously. The passivation with SnCl4 improves the charge-carrier extraction between the ETL and the perovskite layer and the crystallinity of the perovskite layer. This strategy enables the realization of the PSC with a power conversion efficiency (PCE) of 25.56%. These results suggest that the SnO2 passivation with the SnCl4 method is promising for optimized PSCs.clos
Revealing the impact of crystal structure on the oxygen redox in sodium-rich cathode material
No full textSchool of Energy and Chemical Engineering (Energy Engineering (Battery Science and Technology))clos
Molecular Engineering for Enhancing the in vitro/in vivo Phototoxicity Index of Cytotoxic Ir(III)-based Photosensitizers
No full textDepartment of Chemistryclos
Pressure enabled organic reaction via confinement between layers of 2D Materials
No full textDepartment of Chemistryclos
Coordinatively unsaturated atomically dispersed Pt+2-N4 sites on hexagonal nanosheet structure of g-C3N4 for high-performance photocatalytic H2 production
No full textDeveloping active and stable metal single-atom catalysts is technically challenging. The electronic interactions between the metal site and its supports play a key role in altering electronic properties for the creation of more reactive and stable centers. The local environment of a single-atom catalyst directly affects its stability and reactivity. Herein, we describe the formation of coordinatively unsaturated atomically dispersed Pt+2 sites (Pt+2N4) on hexagonal nanosheets of g-C3N4 (Pt1-HCN). This structure with Pt loading of 0.38 wt% exhibited a superb photocatalytic hydrogen evolution rate of 2900 & mu;mol g-1 h-1 which was 5.6 times higher than that of the reactive Pt1 sites (Pt+4-N5) on bulk (Pt1-BCN). The comprehensive advance spectroscopic analysis combined with DFT calculations revealed that the strong electronic metal-support interactions between Pt1 and HCN effectively reduced the adsorbed Pt+4 sites into Pt+2 and create favorable uniform Pt+2-N4 moieties at low Pt loading for water adsorption, dissociation, and H2 evolution
EEPD1 promotes repair of oxidatively-stressed replication forks
No full textUnrepaired oxidatively-stressed replication forks can lead to chromosomal instability and neoplastic transformation or cell death. To meet these challenges cells have evolved a robust mechanism to repair oxidative genomic DNA damage through the base excision repair (BER) pathway, but less is known about repair of oxidative damage at replication forks. We found that depletion or genetic deletion of EEPD1 decreases clonogenic cell survival after oxidative DNA damage. We demonstrate that EEPD1 is recruited to replication forks stressed by oxidative damage induced by H2O2 and that EEPD1 promotes replication fork repair and restart and decreases chromosomal abnormalities after such damage. EEPD1 binds to abasic DNA structures and promotes resolution of genomic abasic sites after oxidative stress. We further observed that restoration of expression of EEPD1 via expression vector transfection restores cell survival and suppresses chromosomal abnormalities induced by oxidative stress in EEPD1-depleted cells. Consistent with this, we found that EEPD1 preserves replication fork integrity by preventing oxidatively-stressed unrepaired fork fusion, thereby decreasing chromosome instability and mitotic abnormalities. Our results indicate a novel role for EEPD1 in replication fork preservation and maintenance of chromosomal stability during oxidative stress