Cu,N-codoped Hierarchical Porous Carbons as Electrocatalysts for Oxygen Reduction Reaction

It remains a huge challenge to develop nonprecious electrocatalysts with high activity to substitute commercial Pt catalysts for oxygen reduction reactions (ORR). Here, the Cu,N-codoped hierarchical porous carbon (Cu–N–C) with a high content of pyridinic N was synthesized by carbonizing Cu-containing ZIF-8. Results indicate that Cu–N–C shows excellent ORR electrocatalyst properties. First of all, it nearly follows the four-electron route, and its electron transfer number reaches 3.92 at −0.4 V. Second, both the onset potential and limited current density of Cu–N–C are almost equal to those of a commercial Pt/C catalyst. Third, it exhibits a better half-wave potential (∼16 mV) than a commercial Pt/C catalyst. More importantly, the Cu–N–C displays better stability and methanol tolerance than the Pt/C catalyst. All of these good properties are attributed to hierarchical structure, high pyridinic N content, and the synergism of Cu and N dopants. The metal–N codoping strategy can significantly enhance the activity of electrocatalysts, and it will provide reference for the design of novel N-doped porous carbon ORR catalysts

Additional file 3 of Identification of key gene networks related to the freezing resistance of apricot kernel pistils by integrating hormone phenotypes and transcriptome profiles

Additional file 3: Table S4. The raw expression information of DEGs in two apricot kernel cultivars under freezing stress

Legislative Documents

Also, variously referred to as: House bills; House documents; House legislative documents; legislative documents; General Court documents

Additional file 5 of Identification of key gene networks related to the freezing resistance of apricot kernel pistils by integrating hormone phenotypes and transcriptome profiles

Additional file 5: Table S6. Annotation of hub genes in the brown module

Additional file 2 of Identification of key gene networks related to the freezing resistance of apricot kernel pistils by integrating hormone phenotypes and transcriptome profiles

Additional file 2: Table S2. The expression information of genes in the transcriptome of two apricot kernel cultivars

Additional file 4 of Identification of key gene networks related to the freezing resistance of apricot kernel pistils by integrating hormone phenotypes and transcriptome profiles

Additional file 4: Table S5. The expression level of DEGs related to plant hormone signaling transduction in two apricot kernel cultivars under freezing stress

Additional file 1 of Identification of key gene networks related to the freezing resistance of apricot kernel pistils by integrating hormone phenotypes and transcriptome profiles

Additional file 1: Fig. S1. Clustering and PCA of transcriptomes of CsL and CtW. Fig. S2. Venn diagram of the DEGs related to plant hormone signaling transduction identified in CsL, CtW and CsL vs CtW. Table S1. List of primers used for qRT-PCR. Table S3. Summary of mapping transcriptome reads to reference sequence

Design, Synthesis, and Biological Features of Platinum(II) Complexes with Rigid Steric Hindrance

A series of platinum­(II) complexes, with N-monosubstituted 1<i>R</i>,2<i>R</i>-diaminocyclohexane bearing methoxy-substituted benzyl groups as carrier ligands, were designed and synthesized. The newly prepared compounds, with chloride anions as leaving groups, were found to be very active against the tested cancer cell lines, including a cisplatin-resistant cell line. Despite their efficacy against tumor cells, they also showed low toxicity to a human normal liver cell line. Among them, complex <b>1</b> had superior cytotoxic activity against A549, HCT-116, MCF-7, SGC7901, and SGC7901/CDDP cancer cell lines. The DNA binding assay is of further special interest, as an unusual monofunctional binding mode was found, due to the introduction of a rigid substituted aromatic ring in the 1<i>R</i>,2<i>R</i>-diaminocyclohexane framework as steric hindrance. The linkage of complex <b>1</b> with DNA was stable and insensitive to nucleophilic attack. Moreover, studies including cellular uptake, gel electrophoresis, apoptosis and cell cycle, and Western blot analysis have provided insight into the high potency of this compound

Observatoires ruraux à Madagascar : pourquoi, comment et que faire ? : analyse à partir des outils théoriques de l'économie des organisations

Figure S2. Validation of the interaction between csa-miR-4018a or csa-miR-4018b and Mapkk3–3′-UTR. (PDF 841 kb

Additional file 1: of Identification and characterization of microRNAs involved in ascidian larval metamorphosis

Table S1. Sequences of identified known miRNAs in C. savignyi. (DOCX 108 kb