Human milk fat （HMF） is the component that supplies the highest fraction of the infant＇s required dietary energy. Other sources of fat are necessary and crucial for infants while the breastfeeding is not possible, ...Human milk fat （HMF） is the component that supplies the highest fraction of the infant＇s required dietary energy. Other sources of fat are necessary and crucial for infants while the breastfeeding is not possible, desirable or sufficient. There is enough scientific evidence that suggests the composition and distribution of the fatty acids affect the absorption of the fat in infants greatly, which influences the growth and health of infants. However, the composition and distribution of the fatty acids in certain fat such as cow milk fat or vegetable oil are different from those in human milk. So as to mimic human milk fat composition and structure, a series of human milk fat substitutes （HMFS） have been developed through enzymatic interesterification reaction during recent years This review described current trends in the production of HMFS, discussed the significance and methods of preparing HMFS and the problems and put forward potential solutions about this kind of product.展开更多
Solar biomass conversion has garnered significant research attention,but the rapid recombination of electrons and holes in photocatalysts hinders efficiency.To enhance this process,researchers aim to develop S-scheme ...Solar biomass conversion has garnered significant research attention,but the rapid recombination of electrons and holes in photocatalysts hinders efficiency.To enhance this process,researchers aim to develop S-scheme heterojunction photocatalysts with optimized band structures that enable effective electron-hole separation,thereby improving overall efficiency.Herein,chemical-bonded SnIn_(4)S_(8)/WO_(3)S-scheme heterostructure photocatalyst was constructed via in-situ hydrothermal strategy for sunlight-driven catalytic selective oxidization of 5-hydroxymethylfurrural(HMF)into valuable 2,5-dimethylfuran(DFF).X-ray photoelectron spectroscopy(XPS)results prove the formation of a W-S chemical bond in the composites,which will likely enhance the efficient transport of photogenerated charges.The optimal SnIn_(4)S_(8)/WO_(3)exhibited an excellent HMF conversion rate(89%)and DFF yield(68%)after 2 h.The S-scheme charge transfer pathway in the SnIn_(4)S_(8)/WO_(3)composite structure was verified through density functional theory(DFT)calculations and supported by partial in situ experimental results.This study demonstrates that the S-scheme heterostructure based on SnIn_(4)S_(8)offers innovative insights for advancing photocatalytic biomass conversion.展开更多
The integration of selective oxidation of renewable biomass and its derivatives with hydrogen(H_(2))pro-duction holds significant potential for simultaneously yielding value-added chemicals and“green H_(2)”,contribu...The integration of selective oxidation of renewable biomass and its derivatives with hydrogen(H_(2))pro-duction holds significant potential for simultaneously yielding value-added chemicals and“green H_(2)”,contributing to addressing sustainability challenges.The S-scheme charge transfer mechanism enhances charge separation by maintaining strong redox potentials at both ends,facilitating both oxidation and reduction reactions.Herein,we synthesize a visible-light-responsive oxygen vacancy-rich In_(2)O_(3-x)/tubular carbon nitride(IO_(OV)/TCN)S-scheme heterojunction photocatalyst via electrostatic adherence for selec-tive 5-hydroxymethylfurfural(HMF)oxidation to 2,5-diformylfuran(DFF)and 2,5-furandicarboxylic acid(FDCA),alongside H_(2)production.Under anaerobic conditions and visible-light irradiation,the optimal IOOV/TCN-10 catalyst achieves an HMF conversion of 94.8%with a selectivity of 53.6%for DFF and FDCA,and a H_(2)yield of 754.05μmol g^(−1)in 3 h.The significantly improved photocatalytic activity results from enhanced visible-light absorption,reduced carrier recombination,and abundant catalytic active sites due to the synergistic effect of surface oxygen vacancies,the hollow nanotube-based architecture,and the S-scheme charge transfer mechanism.This work highlights the great potentials of S-scheme heterojunctions in biomass conversion for sustainable energy use and chemical production.展开更多
以某1000 MW机组为研究对象,通过对机组历史日负荷数据进行聚类分析,得到机组负荷的相似性特征。然后提出了一种适用于火电机组负荷预测的历史匹配预测算法(History matching and forecasting algorithm,HMF),HMF算法将预测时间点之前...以某1000 MW机组为研究对象,通过对机组历史日负荷数据进行聚类分析,得到机组负荷的相似性特征。然后提出了一种适用于火电机组负荷预测的历史匹配预测算法(History matching and forecasting algorithm,HMF),HMF算法将预测时间点之前几个小时的负荷序列与同时段的历史负荷数据进行相似性匹配,利用最相似日的负荷变化趋势对未来负荷做出预测。算例测试表明:HMF算法未来3 h的负荷预测平均误差为4.412%,比传统的自回归滑动平均模型(Autoregressive moving average model,ARMA)具有更高的预测精度,且在变负荷过程中也能取得较好的预测效果。展开更多
基金Supported by Innovative Team of Developmental Science and Technology of Bio-dairy Products,Northeast AgriculturalUninversity (CXT007)
文摘Human milk fat （HMF） is the component that supplies the highest fraction of the infant＇s required dietary energy. Other sources of fat are necessary and crucial for infants while the breastfeeding is not possible, desirable or sufficient. There is enough scientific evidence that suggests the composition and distribution of the fatty acids affect the absorption of the fat in infants greatly, which influences the growth and health of infants. However, the composition and distribution of the fatty acids in certain fat such as cow milk fat or vegetable oil are different from those in human milk. So as to mimic human milk fat composition and structure, a series of human milk fat substitutes （HMFS） have been developed through enzymatic interesterification reaction during recent years This review described current trends in the production of HMFS, discussed the significance and methods of preparing HMFS and the problems and put forward potential solutions about this kind of product.
基金the Canada First Research Excellence Fund(CFREF)Natural Sciences and Engineering Research Council of Canada-Discovery Grant(10040079)for their fundingthe financial support from the China Scholarship Council。
文摘Solar biomass conversion has garnered significant research attention,but the rapid recombination of electrons and holes in photocatalysts hinders efficiency.To enhance this process,researchers aim to develop S-scheme heterojunction photocatalysts with optimized band structures that enable effective electron-hole separation,thereby improving overall efficiency.Herein,chemical-bonded SnIn_(4)S_(8)/WO_(3)S-scheme heterostructure photocatalyst was constructed via in-situ hydrothermal strategy for sunlight-driven catalytic selective oxidization of 5-hydroxymethylfurrural(HMF)into valuable 2,5-dimethylfuran(DFF).X-ray photoelectron spectroscopy(XPS)results prove the formation of a W-S chemical bond in the composites,which will likely enhance the efficient transport of photogenerated charges.The optimal SnIn_(4)S_(8)/WO_(3)exhibited an excellent HMF conversion rate(89%)and DFF yield(68%)after 2 h.The S-scheme charge transfer pathway in the SnIn_(4)S_(8)/WO_(3)composite structure was verified through density functional theory(DFT)calculations and supported by partial in situ experimental results.This study demonstrates that the S-scheme heterostructure based on SnIn_(4)S_(8)offers innovative insights for advancing photocatalytic biomass conversion.
基金financially supported by the Natural Science Foundation of China(Nos.21972058,22102064,and 22302080)Anhui Key Laboratory of Nanomaterials and Nanotechnology,the Major Science and Technology Projects in Anhui Province(No.202305a12020006).
文摘The integration of selective oxidation of renewable biomass and its derivatives with hydrogen(H_(2))pro-duction holds significant potential for simultaneously yielding value-added chemicals and“green H_(2)”,contributing to addressing sustainability challenges.The S-scheme charge transfer mechanism enhances charge separation by maintaining strong redox potentials at both ends,facilitating both oxidation and reduction reactions.Herein,we synthesize a visible-light-responsive oxygen vacancy-rich In_(2)O_(3-x)/tubular carbon nitride(IO_(OV)/TCN)S-scheme heterojunction photocatalyst via electrostatic adherence for selec-tive 5-hydroxymethylfurfural(HMF)oxidation to 2,5-diformylfuran(DFF)and 2,5-furandicarboxylic acid(FDCA),alongside H_(2)production.Under anaerobic conditions and visible-light irradiation,the optimal IOOV/TCN-10 catalyst achieves an HMF conversion of 94.8%with a selectivity of 53.6%for DFF and FDCA,and a H_(2)yield of 754.05μmol g^(−1)in 3 h.The significantly improved photocatalytic activity results from enhanced visible-light absorption,reduced carrier recombination,and abundant catalytic active sites due to the synergistic effect of surface oxygen vacancies,the hollow nanotube-based architecture,and the S-scheme charge transfer mechanism.This work highlights the great potentials of S-scheme heterojunctions in biomass conversion for sustainable energy use and chemical production.
文摘以某1000 MW机组为研究对象,通过对机组历史日负荷数据进行聚类分析,得到机组负荷的相似性特征。然后提出了一种适用于火电机组负荷预测的历史匹配预测算法(History matching and forecasting algorithm,HMF),HMF算法将预测时间点之前几个小时的负荷序列与同时段的历史负荷数据进行相似性匹配,利用最相似日的负荷变化趋势对未来负荷做出预测。算例测试表明:HMF算法未来3 h的负荷预测平均误差为4.412%,比传统的自回归滑动平均模型(Autoregressive moving average model,ARMA)具有更高的预测精度,且在变负荷过程中也能取得较好的预测效果。
