摘要：不同醇法条件制备的花生蛋白品质不同,导致蛋白性质出现差异,产品的功能特性与用途发生改变。以花生粕为原料,采用响应面法以产品得率为指标,优化条件为:体积分数75.00%、浸提温度35.00℃、浸提时间55.45 min,该条件下产品得率87.82%,蛋白含量58.02%(D1蛋白)。以蛋白含量为指标,优化条件为:体积分数67.12%、浸提温度42.02℃、浸提时间58.28 min,此时产品得率86.08%,蛋白含量61.10%(D2蛋白)。与对照组花生粕(CP)相比,D1、D2的蛋白含量分别提高5.72%、8.80%,乳化性、起泡性、持水性、持油性及凝胶性提高;D1、D2蛋白产品粒径减小,溶于水溶液中的清蛋白、伴花生球蛋白Ⅰ含量增加,表面疏水性增加,界面张力下降,花生蛋白的功能特性改变。

摘要：In this paper, high density of dislocations, grain boundaries and nanometer-scale α precipitates were intro- duced to a metastable Ti-36Nb-5Zr alloy （wt%） through a thermo-mechanical approach including severe cold rolling and short-time annealing treatment. The martensitic trans- formation was retarded, and the β phase with low content of β stabilizers was retained at room temperature after the thermo-mechanical treatment. As a result, both low mod- ulus （57 GPa） and high strength （950 MPa） are obtained. The results indicate that it is a feasible strategy to control martensitic transformation start temperature through microstructure optimization instead of composition design, with the aim of fabricating low modulus β-type Ti alloy.

摘要：现有实验室管理系统在功能完整性、用户体验、数据准确性和及时性、安全性与隐私保护、系统灵活性和定制化方面存在诸多问题,基于此,文章提出实验室微服务系统设计方案,通过整合手机端、PC端与实验台之间的数据处理技术,实现在手机端进行在线或离线实验;采用“虚拟+实物+人工智能+信息资源”的多元技术手段,实现微服务与实验操作的有效结合。实验室微服务系统不仅提升了学生的实践创新能力,同时也促进了学生综合素质的培养。

摘要：离子束抛光作为一种超精密加工技术,被应用于材料表面抛光的精抛阶段,而其原子量级的去除效果使得它的加工过程与加工效果难以直接观察,因此为了能够从微观尺度研究离子束抛光的加工效果以及加工参数对材料表面粗糙度与表面损伤的影响,提出使用分子动力学模拟的方法研究离子束抛光过程,通过对氩离子轰击单晶硅的仿真模拟,分析加工参数对单晶硅表面粗糙度与晶格损伤的影响规律,指导实际的加工工艺设计.研究发现,在不同加工角度下,离子剂量对于表面粗糙度的影响规律不同,低角度(0°~40°)低剂量以及高角度(>50°)高剂量的加工有助于达到较低的表面粗糙度;随着加工角度的增加,离子束对晶体表面造成的损伤逐渐减少,当加工角度大于40°时能够大幅度减少晶格损伤.模拟结果显示在实际的离子束抛光过程中,为了得到高质量的表面,应该采取高角度高剂量的加工方式以达到既降低材料表面粗糙度又减小对材料表面晶格产生损伤的目的.

摘要：10-kV 4 H–SiC p-channel insulated gate bipolar transistors(IGBTs) are designed, fabricated, and characterized in this paper. The IGBTs have an active area of 2.25 mm^2 with a die size of 3 mm× 3 mm. A step space modulated junction termination extension(SSM-JTE) structure is introduced and fabricated to improve the blocking performance of the *** SiC p-channel IGBTs with SSM-JTE termination exhibit a leakage current of only 50 nA at-10 kV. To improve the on-state characteristics of SiC IGBTs, the hexagonal cell(H-cell) structure is designed and compared with the conventional interdigital cell(I-cell) structure. At an on-state current of 50 A/cm^2, the voltage drops of I-cell IGBT and H-cell IGBT are10.1 V and 8.3 V respectively. Meanwhile, on the assumption that the package power density is 300 W/cm^2, the maximum permissible current densities of the I-cell IGBT and H-cell IGBT are determined to be 34.2 A/cm^2 and 38.9 A/cm^2 with forward voltage drops of 8.8 V and 7.8 V, respectively. The differential specific on-resistance of I-cell structure and H-cell structure IGBT are 72.36 m?·cm^2 and 56.92 m?·cm^2, respectively. These results demonstrate that H-cell structure silicon carbide IGBT with SSM-JTE is a promising candidate for high power applications.

摘要：The heterogeneous catalytic oxidation of toluene by O_(2)is an inherently safe and green route for production of benzaldehyde,but after more than fifty years of effort,it remains a great ***,we report the best heterogeneous catalyst,TeO_(x)/MoVTeNbO,up to now for the green oxidation of toluene by O_(2)to benzaldehyde,balancing the catalyst activity,selectivity,and *** deposition of TeO_(x) endows the MoVTeNbO composite oxide with entirely new property for toluene oxidation and the surface engineering mechanism has been fully *** discrete TeO_(x) clusters on the surface,shielding the nonselective oxidation sites that interact strongly with the benzene ring of toluene molecule,allows toluene molecule to chemically adsorb to the surface perpendicularly and the methyl is then prone to oxidation to aldehyde on the reshaped selective oxidation sites,where V=O is the main active species responsible for continuously extracting hydrogen from methyl and implanting oxygen to form *** TeO_(x) clusters participate in this reaction through variable valences and stabilize benzaldehyde by couple interaction with the–CHO group of benzaldehyde,thereby achieving high selectivity to benzaldehyde(>95%).The extended works indicate that the catalytic mechanism is effective in a series of selective oxidation of toluene homologues to corresponding aldehydes.

摘要：目的将传统非遗文化中的秸秆拼贴艺术与绿色环保利用理念相结合,探究秸秆拼贴艺术在现代家具装饰设计中的应用理论和设计方法。方法以民俗学、现代设计美学、工业设计、家具装饰设计等相关知识为理论基础,总结归纳传统秸秆拼贴艺术的制作工艺、应用现状及不足,对秸秆拼贴肌理表情的创新设计思路进行详细分析,使其作为新型装饰元素应用于现代家具设计。结论对传统秸秆拼贴艺术的设计理念及制备工艺进行创新,使其与现代家具装饰相结合,既传承了非物质文化遗产,又拓展了现代家具的装饰材料和设计方法,从而满足现代社会审美,对指导现代家具装饰的创新设计有着重要意义。

摘要：为解决概念设计阶段由于设计约束和关键信息模糊不全,导致设计者在进行设计时具有一定的盲目性,且设计出的方案可行性难以保证的问题,提出一种基于产品基因的概念设计方法,创建了概念设计过程模型.在此基础上,提出了产品基因的概念和结构及一种基于功能元的产品基因编码方法.以无人探测小车为例对基于产品基因的概念设计方法进行了说明.结果表明该方法能够使影响概念设计的关键产品信息明确化,降低设计的盲目性,从而提高设计方案的可行性和设计效率.

摘要：In order to improve the processing precision and shorten the hob manufacturing cycle of the face gear,a precision generating hobbing method for face gear with the assembly spherical hob is ***,the evolution of the cylindrical gear to spherical hob basic worm is analyzed,then the spherical hob basic worm is designed,thus the basic worm and spiral angle equation of spherical hob are ***,based on the design method of the existing hob,the development method of the assembly spherical hob is analyzed,the cutter tooth and the cutter substrate of the assembly hob are designed,and the whole assembly is ***,based on the need of face gear hobbing,a numerical control machine for gear hobbing is developed,and the equation of the face gear is ***,for reducing the face gear processing errors induced by equivalent installation errors,the error analysis model is established and the impacts of each error on the gear tooth surface are ***,the assembly spherical hob is manufactured and the gear hobbing test is *** to the measurement results,the processing parameters of face gear hobbing are modified,and the deviation of tooth surface is significantly reduced.

摘要：为了在扩大产品配置空间、争取最优解的同时,提高配置效率,快速消解领域知识耦合过程中的矛盾,提出了一种基于可拓挖掘的产品方案再配置方法。将配置方案用物元对的形式表示,通过计算不同物元对间的传导效应,将一般性的配置知识转化为传导知识;建立方案再配置过程的矛盾问题转换方式,挖掘出变换过程中配置要素之间的相互影响;定量化衡量方案变换过程的可配置程度,揭示可拓变换对产品结构、性能和功能的影响,从而对配置过程中的可变知识加以分析、提取和利用,生成能够满足设计要求的可变方案。将所提方法应用于新型油锯的配置设计,验证了该方法的有效性。