摘要：开发高熵硼化物材料的功能特性对于拓宽其在极端环境中的潜在应用至关重要.为此,本文通过调控材料的组分开发出具有高效催化性能的高熵二硼化物(HEB_(2))纳米颗粒:首先基于对HEB_(2)的尺寸差异因子、混合焓以及体系自蔓延燃烧模式的理论分析,我们采用一种简便、快速、低成本的燃烧合成方法合成了6种不同组分的HEB_(2)纳米颗粒;然后,通过对材料的组分进行调控实现了HEB_(2)纳米颗粒活化过硫酸盐降解抗生素的高效催化能力(四环素的最高去除效率可达93.5%).不同吸附位点的吸附能和差分电荷密度的第一性原理计算结果进一步证实了HEB_(2)优异的催化性能主要归因于Ti组元,而非高熵效应.此外,基于检测到的活性氧和计算的反应能垒,我们提出了HEB_(2)活化过硫酸盐降解抗生素的潜在催化机理.本研究不仅为HEB_(2)高效催化降解抗生素的组分设计提供了理论依据,而且显示出HEB_(2)在去除自然水体中新污染物方面的潜在应用前景.

摘要：Metabolites play important roles in numerous cell biology processes,such as cell proliferation,differentiation,stress response,and cell death[1].Recently,lactate and lactate-derived lysine residue lactylation(Kla)have emerged as newly discovered epigenetic modifications that play critical roles in various physiological and pathological *** the history of lactate research,we can categorize the studies into three mile stones(Fig.S1 online).

摘要：How to increase strength without sacrificing ductility has been developed as a key goal in the manufacture of high-performance metals or alloys. Herein, the double-nanophase intragranular yttrium oxide dispersion strengthened iron alloy with high strength and appreciable ductility was fabricated by solution combustion route and subsequent spark plasma sintering, and the influences of yttrium oxide content and sintering temperature on microstructures and mechanical properties were investigated. The results show at the same sintering temperature,with the increase of yttrium oxide content, the relative density of the sintered alloy decreases and the strength increases. For Fe–2wt%Y_(2)O_(3)alloy, as the sintering temperature increases gradually, the compressive strength decreases, while the strain-to-failure increases. The Fe–2wt%Y_(2)O_(3)alloy with 15.5 nm Y_(2)O_(3)particles uniformly distributed into the 147.5 nm iron grain interior sintered at 650℃ presents a high ultimate compressive strength of 1.86 GPa and large strain-to-failure of 29%. The grain boundary strengthening and intragranular second-phase particle dispersion strengthening are the main dominant mechanisms to enhance the mechanical properties of the alloy.

摘要：Prosthesis implantation and fat transplantation are common breast *** general,prosthesis implantation alone does not achieve a realistic enough appearance,and fat transplantation alone is difficult to achieve in the correct *** date,no reports have focused on methods of combining fat with implanted prostheses for breast *** a newly designed bionic ink(i.e.,polyether F127 diacrylate(F127DA)&poly(ethylene glycol)diacrylate(PEGDA))and projection-based three-dimensional bioprinting(PBP),we report the development of a new method for printing porous *** was used to improve the printing precision of the prosthesis by increasing the gel point of F127DA and reducing the impact of external *** compression modulus of the printed prosthesis was very close to that of prostheses currently used in clinical practice and to that of natural ***,stromal vascular fraction gel(SVF-gel),a human fat extract,was injected into the pores of the synthesized prostheses to prepare a prosthesis mixed with adipose *** were implanted subcutaneously in nude mice to observe their biological *** 14 and 28 days of observation,the prosthesis showed good biocompatibility,and adipose tissues grew well in and around the *** result shows that a porous prosthesis containing pre-placed adipose tissues is a promising breast reconstruction material.

摘要：酸的 oligosaccharide 糖链(AOSC ) ， D-mannuronic 酸 oligosaccharide，源于棕色的水藻多糖，被完成了阶段我在是的中国的临床的试用 anti-Alzheimer 的疾病(广告) 药候选人。在神经原的 AOSC 有约束力的蛋白质的鉴定为理解它的行动机制是很重要的。为了在调停的神经原决定 AOSC 的有约束力的蛋白质，它的反广告活动，共焦的显微镜学，亲密关系层析，和液体层析双人脚踏车集中 spectrometry (LC-MS/MS ) 分析被使用。AOSC 在集中绑在 SH-SY5Y 房间的共焦的显微镜学分析表演 -- ，时间 -- ，并且温度依赖者时尚。AOSC 有约束力的蛋白质被亲密关系层析净化并且由 LC-MS/MS 分析识别了。结果证明有 349 蛋白质绑定 AOSC，包括 clathrin，适配器 protein-2 (AP-2 ) 和淀粉的先锋蛋白质(应用软件) 。这些结果建议到神经原的 AOSC 的绑定 / 入口为反广告活动可能负责。

摘要：目的:产品概念设计是一种复杂的认知活动过程,在产品生命周期中具有极其重要的作用。目前对产品概念设计的智能化方向主要集中在概念生成与评价等离散阶段,尚缺乏系统性的智能化概念设计方法。本文的目的是在形式化与系统化概念设计过程中,实现设计的计算化与智能化,支持计算机辅助设计的发展与应用。创新点:1.结合工程设计与认知科学,提出多阶段设计认知模型表达产品设计过程;2.采用计算智能算法,实现设计认知模型的智能求解。方法:1.通过分析设计者的设计过程规律,结合认知心理学构建符合设计流程的多阶段设计认知模型(图1);2.通过引入计算智能算法,分别对认知模型中概念联想、概念组合和方案评价进行认知计算,实现设计过程的正向求解(图2);3.通过仿真模拟,运用认知计算方法对液压机产品进行概念设计求解,得到相关的设计方案,并验证所提方法的可行性和有效性(表3)。结论:1.产品概念设计过程可抽象为概念生成、概念组合和方案评价的认知过程;2.认知过程可以引入计算智能方法对其进行分别模拟计算;3.运用认知计算方法对产品进行概念设计,可以显著提高设计效率,同时有助于设计自动化的实现。

摘要：因为在广告空格的产品度量标准在 AdS/CFT 通讯的 Lorentz 版本起了一个很重要的作用，在有这个度量标准的广告空格的杨工厂方程被考虑，一个静态的解决方案在这篇论文被获得，它帮助理解杨工厂域的 AdS/CFT 通讯。

摘要：有三种不同尖端清理尺寸的尖端清理流动的摇摆数字地在这篇论文被调查。NASA 转子 67 被选择为计算模型。尖端清理的尺寸什么时候等于，被发现在所有模仿的案例之中，摇摆存在或比设计尖端清理尺寸大。相对全部的压力系数轮廓显示由尖端漏流动的影响的那个区域以固定集体流动率随尖端清理尺寸的增加扩充。在转子尖端区域的静态的压力分发的根吝啬的方形的轮廓被提供为设计尖端清理(1.1%尖端弦)说明那最强壮的波动 区域在前缘附近位于片的压力方面，当时为更大的尖端清理(2.2%尖端弦)，它在在冲击波和尖端漏流动之间的相互作用的区域。

摘要：For the purpose of testing and analysing the corona characteristics of UHVDC bundle conductors, UHVDC corona cage would be built in china. Corona cage is one of the indispensable equipments for conductor corona performance researches. Tests of conductor co- rona characteristics in corona cages can overcome the shortages of those with test *** dimensions of several corona cages constructed overseas were introduced in this paper. Based on foreign experiences and the requirement of State Grid Corporation of china, the UHVDC corona cage was designed as double-cage, double-layer, three-sections, and catenary shape with the size of 70 m×22 m×13 m. The corona loss measurement system, radio interference measuring system, and the audible noise measuring system are also detailed, including the measurement theory, connection with the cage, the parameters and the designing basis. The UHVDC corona cage has been put into service. It now undergoes a large amount of audible noise and radio frequency interference tests.

摘要：提出一种新的喷射式点胶一致性控制方法。首先,通过实验研究胶液黏度、供胶压力、补胶时间等工作参数的影响规律,并基于最小二乘法建立了胶液黏度的多项式模型。然后基于黏度模型与温度特性,采用Dahlin算法设计了温度控制器,可在一定时间范围内将胶液的黏度维持在恒定的水平。基于胶液的黏度模型,建立了胶滴质量的温度控制系统的名义模型,基于小增益原理分析了温度控制系统的稳定性。而后进一步设计了供胶压力控制器,结合温度控制实现了出胶量的一致性控制。最后通过仿真与实验说明了本控制方法的有效性。