One process for producing new type colored sulfoaluminate cement is introduced in this paper. The color stability is an important quality index of colored cement products. Kxperimental results show thds cement clinker...One process for producing new type colored sulfoaluminate cement is introduced in this paper. The color stability is an important quality index of colored cement products. Kxperimental results show thds cement clinker can be obtained at 1250~1350? by using some industrial refuse as coloration agent, and the products of this cement do not only have a rapid development in strength but also are almost color fast over 3 years.展开更多
Intercropping and residue retention contribute to high yield and quality of crops. However, their coupled effects on rhizospheric microbial communities under a continuous vegetable cropping system have not been adequa...Intercropping and residue retention contribute to high yield and quality of crops. However, their coupled effects on rhizospheric microbial communities under a continuous vegetable cropping system have not been adequately addressed. The objective of the present study was to assess the effects on soil microbial community and yields of waxy maize（Zea mays L.） intercropped with or without residue retention in a continuous broccoli（Brassica oleracea L.） cropping system, i.e., relay intercropping of broccoli and waxy maize（B/M-B）, relay intercropping of broccoli and waxy maize with residue retention（B/MR-B）, and broccoli monoculture（B-B）. The biomass yields of spring and autumn vegetables in B/MR-B were 16.3%–32.5% and 30.1%–46.1% higher than those of B-B,respectively. Autumn vegetable economic yields of B/MR-B were 28.2%–40.3% higher than B-B. The average well color development followed the order： B/MR-B ＆gt; B/M-B ＆gt; B-B. The Shannon index, Simpson index, and Mc Intosh index were higher in B/MR-B than under monoculture. A principal component analysis showed that microbial communities of B/MR-B soils differed from those of B/M-B and B-B soils. Carbon（C） sources utilized by the rhizosphere microorganisms were mainly carbohydrates, carboxylic acids, amino acids, and polymers; however, the C sources for the soil microbial community differed between intercropping and monoculture. The communities from B/MR-B preferred amino acids and polymers. Available nitrogen（N）, potassium（K）, and phosphorus（P） had an obvious impact on soil microbial community. Additionally, the C source utilization by microorganisms was significantly affected by p H and available K and P. Cropping system diversification through relay intercropping and residue retention effectively improved the functional diversity of the soil microbial communities and increased the yields of vegetables.展开更多
[Objectives]The paper was to establish a TLC identification method for Ensete wilsonii.[Methods]Usingβ-sitosterol as the reference,the effects of preparation methods of test solutions,developing solvents,developing d...[Objectives]The paper was to establish a TLC identification method for Ensete wilsonii.[Methods]Usingβ-sitosterol as the reference,the effects of preparation methods of test solutions,developing solvents,developing distances and color developing agents on TLC analysis were investigated,and the best TLC conditions for E.wilsonii were determined.[Results]The test solution prepared with 90%methanol solvent was dotted on TLC silica gel G plate,and developed with dichloromethane-toluene-methanol=10:5:1.5 as the developing solvent.Then the plate was sprayed with 10%sulfuric acid ethanol solution,and dried with hot blast for color development.Finally,the plate was examined under an ultraviolet lamp at 365 nm.The TLC results of E.wilsonii obtained showed good separation and color development effect,and the spots were clear and characteristic.[Conclusions]This method is safe,specific,and easy to operate,and can be used as a TLC identification method for E.wilsonii.展开更多
Color development in avocado fruits is a complex mechanism influenced by several factors.To understand this process,a comparative analysis was conducted between fruits of’Fuerte’and’Hass’avocado cultivars using me...Color development in avocado fruits is a complex mechanism influenced by several factors.To understand this process,a comparative analysis was conducted between fruits of’Fuerte’and’Hass’avocado cultivars using metabolomic approaches.Pigment content in the exocarp differs between cultivars,accumulating anthocyanins in’Hass’avocado.Carbohydrate abundance differed at ready-to-eat stage showing that’Hass’accumulated higher amounts of sucrose,mannoheptulose,and perseitol than‘Fuerte’in both tissues.Higher amounts of fatty acids were observed in both tissues of’Fuerte’.Polar metabolites indicated differences in amino acid and carbohydrate metabolisms between cultivars.Hormone analysis suggested that abscisic acid is involved in pigment biosynthesis.These findings showed that hormone and primary metabolites cross-talk plays an important role in color development in the exocarp and in the softening in the mesocarp of‘Hass’,opening new perspectives about this metabolic interplay and its relation to the development of the exocarp-mesocarp synchronization during ripening.展开更多
文摘One process for producing new type colored sulfoaluminate cement is introduced in this paper. The color stability is an important quality index of colored cement products. Kxperimental results show thds cement clinker can be obtained at 1250~1350? by using some industrial refuse as coloration agent, and the products of this cement do not only have a rapid development in strength but also are almost color fast over 3 years.
基金financially supported by the Special Research Funding for Public Benefit Industries (Agriculture) of China (No. 201503121)the Key Projects in the National Science and Technology Pillar Program during the Twelfth Five-year Plan Period, China (No. 2012BAD14B07)
文摘Intercropping and residue retention contribute to high yield and quality of crops. However, their coupled effects on rhizospheric microbial communities under a continuous vegetable cropping system have not been adequately addressed. The objective of the present study was to assess the effects on soil microbial community and yields of waxy maize（Zea mays L.） intercropped with or without residue retention in a continuous broccoli（Brassica oleracea L.） cropping system, i.e., relay intercropping of broccoli and waxy maize（B/M-B）, relay intercropping of broccoli and waxy maize with residue retention（B/MR-B）, and broccoli monoculture（B-B）. The biomass yields of spring and autumn vegetables in B/MR-B were 16.3%–32.5% and 30.1%–46.1% higher than those of B-B,respectively. Autumn vegetable economic yields of B/MR-B were 28.2%–40.3% higher than B-B. The average well color development followed the order： B/MR-B ＆gt; B/M-B ＆gt; B-B. The Shannon index, Simpson index, and Mc Intosh index were higher in B/MR-B than under monoculture. A principal component analysis showed that microbial communities of B/MR-B soils differed from those of B/M-B and B-B soils. Carbon（C） sources utilized by the rhizosphere microorganisms were mainly carbohydrates, carboxylic acids, amino acids, and polymers; however, the C sources for the soil microbial community differed between intercropping and monoculture. The communities from B/MR-B preferred amino acids and polymers. Available nitrogen（N）, potassium（K）, and phosphorus（P） had an obvious impact on soil microbial community. Additionally, the C source utilization by microorganisms was significantly affected by p H and available K and P. Cropping system diversification through relay intercropping and residue retention effectively improved the functional diversity of the soil microbial communities and increased the yields of vegetables.
基金Supported by Innovation Project of Guangxi Graduate Education of GXUCM(YCSY2022012)High-level Innovation Team and Outstanding Scholars Program of Universities and Colleges in Guangxi(GJR[2014]07)Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica(20-065-38).
文摘[Objectives]The paper was to establish a TLC identification method for Ensete wilsonii.[Methods]Usingβ-sitosterol as the reference,the effects of preparation methods of test solutions,developing solvents,developing distances and color developing agents on TLC analysis were investigated,and the best TLC conditions for E.wilsonii were determined.[Results]The test solution prepared with 90%methanol solvent was dotted on TLC silica gel G plate,and developed with dichloromethane-toluene-methanol=10:5:1.5 as the developing solvent.Then the plate was sprayed with 10%sulfuric acid ethanol solution,and dried with hot blast for color development.Finally,the plate was examined under an ultraviolet lamp at 365 nm.The TLC results of E.wilsonii obtained showed good separation and color development effect,and the spots were clear and characteristic.[Conclusions]This method is safe,specific,and easy to operate,and can be used as a TLC identification method for E.wilsonii.
基金supported by Agencia Nacional de Investigacion y Desarrollo(ANID)through the Fondo Nacional de Desarrollo Científico y Tecnologico,ANID-FONDECYT N◦1220223 and N°1220484,ANIDFONDEQUIP EQM140074,ANID-REDESBIO0001 and ANID-MILENIOICN2021_044by the RTI2018-099139-B-C21 and PID2022-141851OB-I00 from Ministry of Science and Innovation(Spain)-National Research Agency(MCIN/AEI/10.13039/501100011033)by“ERDF A way of making Europe”,of the European Union.P.Olmedo acknowledges the postdoctoral grant 2023 PUCV VINCI.G.Núnez-Lillo acknowledges Fondecyt N◦3210011 grant from ANID.R.Pedreschi and E.Aguayo are thankful to the grant of Fundacion Seneca(Murcia,Spain)through the‘Jimenez de la Espada’Program of Visiting Researchers.
文摘Color development in avocado fruits is a complex mechanism influenced by several factors.To understand this process,a comparative analysis was conducted between fruits of’Fuerte’and’Hass’avocado cultivars using metabolomic approaches.Pigment content in the exocarp differs between cultivars,accumulating anthocyanins in’Hass’avocado.Carbohydrate abundance differed at ready-to-eat stage showing that’Hass’accumulated higher amounts of sucrose,mannoheptulose,and perseitol than‘Fuerte’in both tissues.Higher amounts of fatty acids were observed in both tissues of’Fuerte’.Polar metabolites indicated differences in amino acid and carbohydrate metabolisms between cultivars.Hormone analysis suggested that abscisic acid is involved in pigment biosynthesis.These findings showed that hormone and primary metabolites cross-talk plays an important role in color development in the exocarp and in the softening in the mesocarp of‘Hass’,opening new perspectives about this metabolic interplay and its relation to the development of the exocarp-mesocarp synchronization during ripening.
