In order to improve the performance of the extracellular selenium polysaccharide(SeNPs)of Weissella confusa XG-3 and its application in food industry,the effects of the addition ratio of exopolysaccharide(EPS)and sodi...In order to improve the performance of the extracellular selenium polysaccharide(SeNPs)of Weissella confusa XG-3 and its application in food industry,the effects of the addition ratio of exopolysaccharide(EPS)and sodium selenite,the reaction temperature,time and pH on the synthesis were optimized and the rheological property and cytotoxcity assay of SeNPs was studied.In this study,the optimal reaction conditions were determined as follows:the ratio of EPS to sodium selenite was 1∶1,reaction at 37℃for 6 h,pH 4.The characteristic peak of SeNPs appeared at 250~300 nm in full wavelength scanning,indicating the successful compounding of sodium selenite on EPS.SeNPs had higher apparent viscosity than EPS,which led to a more desirable compatibility during industrial application.Cytotoxicity experiments showed that SeNPs did not inhibit the growth of mouse macrophage RAW 264.7 at the concentration of 0~3 mg·mL^(-1),indicating that SeNPs was not toxic within this concentration range.展开更多
The NiAl–TiC–TiB2 composites were processed by self-propagating high-temperature synthesis（SHS） method using raw powders of Ni, Al, Ti, B4 C, TiC, and TiB2, and their microstructure and micro-hardness were investi...The NiAl–TiC–TiB2 composites were processed by self-propagating high-temperature synthesis（SHS） method using raw powders of Ni, Al, Ti, B4 C, TiC, and TiB2, and their microstructure and micro-hardness were investigated. The TiC–TiB2 in NiAl matrix, with contents from 10 to 30 wt%, emerged with the use of two methods： in situ formed and externally added. The results show that all final products are composed of three phases of NiAl, TiC, and TiB2. The microstructures of NiAl–TiC–TiB2 composites with in situ-formed TiC and TiB2 are fine, and all the three phases are distributed uniformly. The grains of NiAl matrix in the composites have been greatly refined, and the micro-hardness of NiAl increases from 381 HV100 to 779 HV100. However, the microstructures of NiAl–TiC–TiB2 composites with externally added TiC and TiB2 are coarse and inhomogeneous, with severe agglomeration of TiC and TiB2 particles. The samples containing externally added 30 wt% TiC–TiB2attain the micro-hardness of 485 HV100. The microstructure evolution and fracture mode of the two kinds of NiAl–TiC–TiB2 composites are different.展开更多
Bismuth（Ⅲ） nitrate pentahydrate catalyzed the three-component condensation ofβ-naphthol,aldehydes and amines/urea under solvent-free conditions to afford the corresponding amidoalkyl naphthols in excellent yields.
The effects of hypoxic endothelial cell conditioned medium (HECCM) on proliferation and collagen synthesis of cultured porcine pulmonary arterial smooth muscle cells (PASMCs) were studied by 3H-thymidine (3H-TdR) and ...The effects of hypoxic endothelial cell conditioned medium (HECCM) on proliferation and collagen synthesis of cultured porcine pulmonary arterial smooth muscle cells (PASMCs) were studied by 3H-thymidine (3H-TdR) and 3H-proline incorporations, image analysis for determination of DNA content and colorimetric assay using MTT, and the inhibitory effects of radix salviae miltiorrhizae (RSM) on them were also investigated. The results showed that HECCM could induce enhancement of the enzymatic activity of mitochondria, increase of the nucleic DNA content and increases of the 3H-TdR and 3H-proline incorporations in PASMCs. The 3H-proline incorporation in PASMCs cultured in HECCM was 1.83 times as much as that cultured in normoxic endothelial cell conditioned medium (NECCM). Compared with the control, Chinese herb medicine RSM could inhibit the proliferation of PASMCs cultured in HECCM and decrease the 3H-prolinc incorporation in PASMCs cultured in both HECCM and NECCM (P< 0.001). However, RSM had no ef fects on the nucleic DNA content and 3H-TdR incorporation into DNA of PASMCs cultured in NECCM. It suggests that hypoxia may stimulate the endothelia to synthesize and secrete some cytokines which can stimulate the proliferation and the synthesis of collagen of PASMCs and RSM can inhibit this process.展开更多
Microstructural design is crucial yet challenging for thin-film semiconductors,creating barriers for new materials to achieve practical applications in photovoltaics and optoelectronics.Wepresent the Daisy Visual Inte...Microstructural design is crucial yet challenging for thin-film semiconductors,creating barriers for new materials to achieve practical applications in photovoltaics and optoelectronics.Wepresent the Daisy Visual Intelligence Framework(Daisy),which combines multiple AI models to learn from historical microscopic images and propose new synthesis conditions towards desirable microstructures.Daisy consists of an image interpreter to extract grain and defect statistics,and a reinforcement-learningdriven synthesis planner to optimize thin-film morphology.Using Ag-Bi-I perovskite-inspired materials as a case study,Daisy achieved over 120×and 87×acceleration in image analysis and synthesis planning,respectively,compared to manual methods.Processing parameters for AgBiI_(4)were optimized from over 1700 possible synthesis conditions within 3.5 min,yielding experimentally validated films with no visible pinholes and average grain sizes 14.5%larger than the historicalmean.Our work advances computational frameworks for self-driving labs and shedding light on AIaccelerated microstructure development for emerging thin-film materials.展开更多
Image-based virtual try-on systems have significant commercial value in online garment shopping.However,prior methods fail to appropriately handle details,so are defective in maintaining the original appearance of org...Image-based virtual try-on systems have significant commercial value in online garment shopping.However,prior methods fail to appropriately handle details,so are defective in maintaining the original appearance of organizational items including arms,the neck,and in-shop garments.We propose a novel high fidelity virtual try-on network to generate realistic results.Specifically,a distributed pipeline is used for simultaneous generation of organizational items.First,the in-shop garment is warped using thin plate splines(TPS)to give a coarse shape reference,and then a corresponding target semantic map is generated,which can adaptively respond to the distribution of different items triggered by different garments.Second,organizational items are componentized separately using our novel semantic map-based image adjustment network(SMIAN)to avoid interference between body parts.Finally,all components are integrated to generatethe overall result by SMIAN.A priori dual-modalinformation is incorporated in the tail layers of SMIAN to improve the convergence rate of the network.Experiments demonstrate that the proposed method can retain better details of condition information than current methods.Our method achieves convincing quantitative and qualitative results on existing benchmark datasets.展开更多
文摘In order to improve the performance of the extracellular selenium polysaccharide(SeNPs)of Weissella confusa XG-3 and its application in food industry,the effects of the addition ratio of exopolysaccharide(EPS)and sodium selenite,the reaction temperature,time and pH on the synthesis were optimized and the rheological property and cytotoxcity assay of SeNPs was studied.In this study,the optimal reaction conditions were determined as follows:the ratio of EPS to sodium selenite was 1∶1,reaction at 37℃for 6 h,pH 4.The characteristic peak of SeNPs appeared at 250~300 nm in full wavelength scanning,indicating the successful compounding of sodium selenite on EPS.SeNPs had higher apparent viscosity than EPS,which led to a more desirable compatibility during industrial application.Cytotoxicity experiments showed that SeNPs did not inhibit the growth of mouse macrophage RAW 264.7 at the concentration of 0~3 mg·mL^(-1),indicating that SeNPs was not toxic within this concentration range.
基金financially supported by the National Natural Science Foundation of China(Nos.51072104 and 51272141)Tai Shan Scholars Project of Shandong Province,China(No.ts20110828)
文摘The NiAl–TiC–TiB2 composites were processed by self-propagating high-temperature synthesis（SHS） method using raw powders of Ni, Al, Ti, B4 C, TiC, and TiB2, and their microstructure and micro-hardness were investigated. The TiC–TiB2 in NiAl matrix, with contents from 10 to 30 wt%, emerged with the use of two methods： in situ formed and externally added. The results show that all final products are composed of three phases of NiAl, TiC, and TiB2. The microstructures of NiAl–TiC–TiB2 composites with in situ-formed TiC and TiB2 are fine, and all the three phases are distributed uniformly. The grains of NiAl matrix in the composites have been greatly refined, and the micro-hardness of NiAl increases from 381 HV100 to 779 HV100. However, the microstructures of NiAl–TiC–TiB2 composites with externally added TiC and TiB2 are coarse and inhomogeneous, with severe agglomeration of TiC and TiB2 particles. The samples containing externally added 30 wt% TiC–TiB2attain the micro-hardness of 485 HV100. The microstructure evolution and fracture mode of the two kinds of NiAl–TiC–TiB2 composites are different.
文摘Bismuth（Ⅲ） nitrate pentahydrate catalyzed the three-component condensation ofβ-naphthol,aldehydes and amines/urea under solvent-free conditions to afford the corresponding amidoalkyl naphthols in excellent yields.
文摘The effects of hypoxic endothelial cell conditioned medium (HECCM) on proliferation and collagen synthesis of cultured porcine pulmonary arterial smooth muscle cells (PASMCs) were studied by 3H-thymidine (3H-TdR) and 3H-proline incorporations, image analysis for determination of DNA content and colorimetric assay using MTT, and the inhibitory effects of radix salviae miltiorrhizae (RSM) on them were also investigated. The results showed that HECCM could induce enhancement of the enzymatic activity of mitochondria, increase of the nucleic DNA content and increases of the 3H-TdR and 3H-proline incorporations in PASMCs. The 3H-proline incorporation in PASMCs cultured in HECCM was 1.83 times as much as that cultured in normoxic endothelial cell conditioned medium (NECCM). Compared with the control, Chinese herb medicine RSM could inhibit the proliferation of PASMCs cultured in HECCM and decrease the 3H-prolinc incorporation in PASMCs cultured in both HECCM and NECCM (P< 0.001). However, RSM had no ef fects on the nucleic DNA content and 3H-TdR incorporation into DNA of PASMCs cultured in NECCM. It suggests that hypoxia may stimulate the endothelia to synthesize and secrete some cytokines which can stimulate the proliferation and the synthesis of collagen of PASMCs and RSM can inhibit this process.
基金support from Royalty Research Fund, University of Washington and the National Science Foundation through the University of Washington Materials Research Science and Engineering Center, DMR-2308979R.L.Z.H., P.L. and X.G. would like to thank UK Research and Innovation for a Frontier Grant (no. EP/X022900/1)+2 种基金awarded through the 2021 ERC Starting Grant scheme. In addition, the authors thank the Henry Royce Institute for funding through the Industrial Collaborative Programme, funded by the Engineering and Physical Sciences Research Council (EPSRC, no. EP/X527257/1)R.L.Z.H. thanks the Science & Technology Facilities Council and Royal Academy of Engineering for funding through a Senior Research Fellowship (no. RCSRF2324-18-68)H.Z. and F.C.P.M. thank Iberdrola through the ‘Energy for Future (E4F) Postdoctoral Fellowship’ (Marie Skłodowska).
文摘Microstructural design is crucial yet challenging for thin-film semiconductors,creating barriers for new materials to achieve practical applications in photovoltaics and optoelectronics.Wepresent the Daisy Visual Intelligence Framework(Daisy),which combines multiple AI models to learn from historical microscopic images and propose new synthesis conditions towards desirable microstructures.Daisy consists of an image interpreter to extract grain and defect statistics,and a reinforcement-learningdriven synthesis planner to optimize thin-film morphology.Using Ag-Bi-I perovskite-inspired materials as a case study,Daisy achieved over 120×and 87×acceleration in image analysis and synthesis planning,respectively,compared to manual methods.Processing parameters for AgBiI_(4)were optimized from over 1700 possible synthesis conditions within 3.5 min,yielding experimentally validated films with no visible pinholes and average grain sizes 14.5%larger than the historicalmean.Our work advances computational frameworks for self-driving labs and shedding light on AIaccelerated microstructure development for emerging thin-film materials.
基金supported by Young Talents Programme of Scientific Research Program of Hubei Education Department(Project No.Q20201709)Research on the Key Technology of Flexible Intelligent Manufacturing of Clothing based on Digital Twin of Hubei Key Research and Development Program(Project No.2021BAA042)Open Topic of Engineering Research Center of Hubei Province for Clothing Information(Project No.900204).
文摘Image-based virtual try-on systems have significant commercial value in online garment shopping.However,prior methods fail to appropriately handle details,so are defective in maintaining the original appearance of organizational items including arms,the neck,and in-shop garments.We propose a novel high fidelity virtual try-on network to generate realistic results.Specifically,a distributed pipeline is used for simultaneous generation of organizational items.First,the in-shop garment is warped using thin plate splines(TPS)to give a coarse shape reference,and then a corresponding target semantic map is generated,which can adaptively respond to the distribution of different items triggered by different garments.Second,organizational items are componentized separately using our novel semantic map-based image adjustment network(SMIAN)to avoid interference between body parts.Finally,all components are integrated to generatethe overall result by SMIAN.A priori dual-modalinformation is incorporated in the tail layers of SMIAN to improve the convergence rate of the network.Experiments demonstrate that the proposed method can retain better details of condition information than current methods.Our method achieves convincing quantitative and qualitative results on existing benchmark datasets.
