Carrier Transport Improvement of CHNHPbI Film by Methylamine Gas Treatment.

Recently, perovskite solar cells with high photovoltaic performance based on methylammonium lead halide have attracted great interest due to the superior physical properties of the perovskite optical absorption layer. Here, we investigate the interface carrier transport properties of CHNHPbI film by applying the reported treatment with methylamine gas, to reveal the possible mechanism of high performance perovskite-sensitized solar cell results. It is found that the crystal structure and surface morphology are effectively improved by the room-temperature repair of methylamine atmosphere.

Hepatitis B virus nucleic acid testing in Chinese blood donors with normal and elevated alanine aminotransferase.

Background: Nucleic acid testing (NAT) is currently not a routine donor test in China. The aim of this study was to evaluate the current residual risk of hepatitis B virus (HBV) transmission and the value of ALT testing in preventing HBV infection.

Study Design And Methods: From January 2008 to September 2009, a total of 5521 qualified donations by routine screening and 5034 deferred donations due to elevated ALT alone were collected from five blood centers.

Chemistry of heterocyclic ketene aminals: construction of imidazo(pyrido)[1,2-a]pyridines and imidazo(pyrido)[3,2,1-ij][1,8]naphthyridines via DABCO-catalyzed tandem annulations.

2-(2-Chloroaroyl)methyleneimidazolidines with four reactive sites show fascinating structural features and could be used as a new strategy for the synthesis of novel heterocycles. This paper presents our new findings in the reaction of 2-(2-chloroaroyl)methyleneimidazolidines with allenic esters affording functionalized imidazo(pyrido)[1,2-a]pyridines via DABCO-catalyzed tandem annulations. Of particular significance is the incorporation of an o-halo group into the aryl ring of 2-benzoylmethylene-imidazolidines to set up a convenient and general way for constructing unusual imidazo(pyrido)[3,2,1-ij][1,8]naphthyridines.

[Deletion and mutation analysis to FOXL2 in blepharophimosis-ptosis-epicanthus inversus syndrome].

Objective: To perform genetic analysis in 5 patients with blepharophimosis-ptosis-epicanthus inversus syndrome (BPES) and refine the genotype-phenotype correlation.

Methods: G-band karyotyping, fluorescent in situ hybridization (FISH), SNP array, PCR and sequencing techniques were performed to one patient with BPES and mental retardation and 4 only with BPES.

Results: Patient 1 with mental retardation carried a 9.

Evidence that hydroxysafflor yellow A protects the heart against ischaemia-reperfusion injury by inhibiting mitochondrial permeability transition pore opening.

1. The present study was conducted to investigate whether hydroxysafflor yellow A (HSYA) has a protective effect against heart injury after ischaemia-reperfusion and to determine the possible mechanism involved. 2.