Abstract: The present invention concerns a process for cracking ammonia comprising providing an ammonia-containing feed gas at a temperature of over 600° C. and a pressure in a range from about 5 bar to about 50 bar; combusting a fuel with an oxidant gas in a furnace to heat reactor tubes to achieve a maximum inner wall temperature of over 700° C. and produce a flue gas, each reactor tube comprising a catalyst bed comprising a first row transition metal-based catalyst; and feeding the ammonia-containing feed gas to the reactor tubes to produce a cracked gas at a temperature of over 600° C. on exit from the reactor tubes.

Abstract: Disclosed are an antimycin compound and a preparation method and use thereof. The preparation method comprises: fermenting a marine actinomycete (Streptomyces sp.4-7) with a preservation number CCTCCNO: M2020953 to obtain a fermented product and soaking and extracting the fermented product with ethyl acetate to obtain a crude extract; and carrying out separation and purification by normal-phase silica gel column chromatography, reversed-phase MPLC, and semi-preparative reversed-phase high-performance liquid chromatography. The invention has the advantages of resistance against Botrytis cinerea and Penicillium citrinum.

Abstract: An antimycin compound and a preparation method and use thereof are provided. The preparation method comprises: fermenting a marine actinomycete (Steptomyces sp.4-7) with a preservation number CCTCCNO: M2020953 to obtain a fermented product and soaking and extracting the fermented product with ethyl acetate to obtain a crude extract; and carrying out separation and purification by normal-phase silica gel column chromatography, reversed-phase MPLC, and semi-preparative reversed-phase high-performance liquid chromatography. The antimycin compound has the advantages of resistance against Botrytis cinerea and Penicillium citrinum.

Abstract: The present invention discloses a Prunus persica polygalacturonase-inhibiting protein 1 (PpPGIP1) gene, and a cloning method and use thereof. The Prunus persica polygalacturonase-inhibiting protein 1 PpPGIP1 gene has a nucleotide sequence shown in SEQ ID NO: 1, and a protein encoded by the Prunus persica polygalacturonase-inhibiting protein 1 (PpPGIP1) gene has an amino acid sequence shown in SEQ ID NO: 2. The cloning method includes the following steps: (1) extracting total RNA from a peach, and subjecting the total RNA to reverse transcription to obtain cDNA, which serves as a template; (2) designing primers based on the PpPGIP1 gene sequence; and (3) Polymerase Chain Reaction (PCR) amplification: conducting PCR amplification to obtain a PpPGIP1 gene amplification product.

Abstract: The present invention discloses a peach polygalacturonase-inhibiting protein PpPGIP1 gene, and a cloning method and use thereof. The peach polygalacturonase-inhibiting protein PpPGIP1 gene has a nucleotide sequence shown in SEQ ID NO: 1, and a protein encoded by the peach polygalacturonase-inhibiting protein PpPGIP1 gene has an amino acid sequence shown in SEQ ID NO: 2. The cloning method includes the following steps: (1) extracting total RNA from a peach, and subjecting the total RNA to reverse transcription to obtain cDNA, which serves as a template; (2) designing primers based on the PpPGIP1 gene sequence; and (3) Polymerase Chain Reaction (PCR) amplification: conducting PCR amplification to obtain a PpPGIP1 gene amplification product. As there is a protein-protein interaction relationship between PpPGIP1 and PpVIN2, the effective inhibition of the PpPGIP1 expression in peach can significantly reduce the activity of the acid invertase PpVIN2 and thus reduce the decomposition of sucrose.