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In this study, the conjugate of curcumin and gluten were prepared through alkaline, ultrasonic, and enzymatic methods. The effects of grafting methods on physicochemical properties of gluten, rheology properties of frozen dough and the quality of resulted bread were evaluated. The results showed that the conjugation induced by alkaline, ultrasound, and enzyme led to the decreasing of free amino group content in the range of 26.98%~28.74%, and free sulfhydryl group content in the range of 10.80%~14.52%, respectively. The conjugation also resulted in the disrupture of intramolecular hydrogen bonding, changes of the secondary, tertiary structure and surface hydrophobicity, as well as increasing of particle size and thermal stability. The frozen dough with curcumin-gluten conjugate exhibited higher complex modulus, creep recovery and hardness than those without the conjugate. Furthermore, the incorporation of curcumin-gluten conjugate into frozen dough also helped to improve the loaf volume and the hardness of resulted bread. These results indicated that the conjugation between curcumin and gluten could prevent the deterioration of frozen dough. In addition, as compared with conjugate prepared from alkaline and enzymatic methods, the conjugate prepared from ultrasonic method showed the better ability in improving the quality of frozen dough.

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Aiming at the high efficiency leaching of W and V in a SCR denitration catalyst, the microwave assisted leaching of W and V in waste SCR catalyst was studied. The results show that under the conditions of microwave power of 600 W, reaction time of 1 h, reaction temperature of 60 °C, sodium hydroxide concentration of 40% and liquid volume/solid mass ratio of 7.5/1, the leaching rates of W and V in SCR denitration catalyst can reach 89.96% and 96.32 %, respectively. After leaching the alkaline leaching residue with 4 mol/L HC1 solution for 1 h, TiO2 with a purity of 98.76% is obtained. Compared with the traditional water bath heating method, microwave heating leaching method can not only improve the leaching rate of tungsten and vanadium on SCR denitrification catalyst, but also greatly shorten the test reaction time, which provides a reliable technical basis for the green effective leaching of W and V in SCR denitrification catalyst. [ABSTRACT FROM AUTHOR]

[Introduction] As wind-solar hydrogen production projects expand in scale and number, there is a growing demand for the design, equipment selection, and economic comparison of green hydrogen production systems. This paper, based on the design experience of multiple similar projects, extracts the typical design of wind-solar coupled hydrogen production system and provides the design selection. [Method] This paper introduced design scheme of wind-solar coupled hydrogen production from the aspects of wind-solar hydrogen storage capacity configuration scheme, electrolysis hydrogen production equipment performance and rectifier comparison, hydrogen and oxygen separation and purification system design, and green hydrogen market and economy analysis. [Result] Capacity configuration can be optimized according to the developed design software through constraint conditions. alkaline electrolysis equipment is the preferred choice for hydrogen production，while proton exchange membrane (PEM) electrolysis equipment can be used for small-scale engineering demonstration. Both thyristor and insulated gate bipolar transistor (IGBT) power rectifiers have their own advantages, and IGBT rectification is gradually being applied in engineering practice. For saving investment, separation and purification can be optimized according to the scale of the project. The market for green hydrogen is huge. As fossil fuel prices continue to rise and the costs of wind-solar coupled hydrogen production systems decrease, coupled with its eco-friendly characteristics, green hydrogen has already become economically competitive. [Conclusion] The wind-solar coupled hydrogen production project is still in the initial demonstration stage, which requires equipment technology progress, design scheme optimization and government policy support to promote the development of green hydrogen industry.

Copyright of World Nuclear Geoscience is the property of World Nuclear Geoscience Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Hydrometallurgy of China is the property of Hydrometallurgy of China Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Hydrometallurgy of China is the property of Hydrometallurgy of China Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Hydrometallurgy of China is the property of Hydrometallurgy of China Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Hot dry rock (HDR) is a kind of hgih temperature (>180 °C) rock without water (or with litl le water and cannot flow ) - and with low porosity and permea biliiy. which is mostly compose d of mei amorphic rock or granite . En ha need geothermal system i(EGS) is an effective met hod for exploiting HDR geoihermal resources. Artificial geoihermal reservoir has been aqcreated to extract economical amounts of heat from low permeability geoihermal resources by hydraulic fracturing or chemical stimulation, which is important for the exploitation of geot hernial energy. As a consequence, chemical stimulation, in addition to hydraulic and thermal fracturing, is proposed and employed as an important method for the reservoir modification. The latest researches on chemical stimulation technology in EGS reservoir modification were reviewed, and the EGS engineering experience using chemical stimulation technology of practical application was summarized. The results show that most of the chemica! 1 stimulation used in EGS are acid chemical stimul aiion. especially the chelating acid has the advantages of scale inhibition. slowness, catalytic perf ormance less secondary precipitation, and weak corrosiveness. which can achieve deep penetration and low damage to reservoir excitation; alka line chemical stimulation (NaOH and Na2C03) laboratory experimental results are good- but the effect of practical application is not good- and the addition of alkaline stimulants, such as NTA. EOT A and other chelating agents, can reduce the formaiion of secondary precipitation and obtain good reservoir modification effeci. Finally. a reservoir modification process combined with thermal stimu laiion and alkaline chemical stimulaiion for HDR development demonstration project being carried iout in Gonghe Basin of Qinghaiwas proposed, this process may producegeot hernial reservoir with larger volume and improve the effect of reservoir reconstruction. [ABSTRACT FROM AUTHOR]

To investigate the leaching characteristic of alkaline copper dioxide ore by ammonia producing bacteria, the influence of the ammonia producing bacteria on the ore during the process was analyzed. To expose the possible influence factor, the shaking flask leaching test was carried out by putting alkaline cupric oxide ore from Yunnan separately into five kinds of leaching solutions, such as bacteria-containing, bacteria-removing inoculums and ammonia solution. Experimental results indicate that the bacteria have a strong ability at producing ammonia and the highest ammonia mass concentration reaches 8. 93 g·L-1. Ammonia production is positively correlated with the content of bacteria. The bacteria leach mineral mainly through producing ammonia, besides, the bacteria and their metabolites can also effect. The leaching capacity is in the order of bacteria ammonia > bacteria > bacterial metabolites, and the ratio of the three is 12:5:4.

In view of serious shortcomings existing in a traditional secondary lead pyrometallurgical process such as high smelting temperature,large energy consumption and low concentration of SO2 fume together with lead vapor pollution,a low-temperature alkaline and sulfur-fixing smelting process of secondary lead was proposed in this work based on a thermodynamic analysis of the NaOHC-PbSO4-ZnO low-temperature alkaline system. The effects of NaOH amount,smelting temperature,coke amount and ZnO addition on the alkaline and sulfur-fixing smelting of spent lead-acid battery colloid sludge(hereinafter referred to as colloid sludge) which was used as the test material were investigated by single factor experiments. The optimum conditions were determined as follows:m(NaO H)/m(colloid sludge)=60%,temperature 860℃,m(coke)/m(colloid sludge)=10%,and m(ZnO)=m(theoretic). Under these above-mentioned optimum conditions,the average direct recovery ratio of lead was 99.09%,the average grade of crude lead was 98.86%,and the average sulfur-fixing rate for ZnO was 93.37%. XRD spectra indicated that sulfur contained in the material was mainly fixed in the solid residue in the form of zinc sulfide,most of NaO H was converted into Na2CO3,and no SO2 emission existed in the smelting process.

Copyright of Industrial Minerals & Processing / Huagong Kuangwu yu Jiagong is the property of Industrial Minerals & Processing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Hydrometallurgy of China is the property of Hydrometallurgy of China Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)