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凝固剂及加工条件对豆腐凝胶形成及品质影响研究进展

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食品工业科技 2024年第3期45卷 388-396页

作者：孙冰玉郑欣茹刘琳琳吕铭守黄雨洋朱颖曲敏朱秀清石彦国哈尔滨商业大学食品工程学院黑龙江省谷物食品与谷物资源综合加工重点实验室黑龙江哈尔滨150076

豆腐的本质是一种蛋白质凝胶体,是大豆蛋白(主要是7S和11S球蛋白)在热处理下发生变性使蛋白质分子结构展开,再通过盐离子、氢离子或酶等凝固剂作用下发生聚集,形成致密均匀且具有网状结构蛋白凝胶。豆腐凝胶的形成及豆腐品质受多种因素... 详细信息

豆腐的本质是一种蛋白质凝胶体,是大豆蛋白(主要是7S和11S球蛋白)在热处理下发生变性使蛋白质分子结构展开,再通过盐离子、氢离子或酶等凝固剂作用下发生聚集,形成致密均匀且具有网状结构蛋白凝胶。豆腐凝胶的形成及豆腐品质受多种因素的影响。本文从凝固剂种类(盐类、酸类和酶类凝固剂)以及加工条件(加工原料、制浆方法、豆浆体系pH、热处理条件)角度出发,阐明凝固剂及加工条件对豆腐凝胶形成以及品质的影响研究进展。以期为豆腐制品的工业化生产提供理论指导,为豆腐食品的研究开发与品质调控提供科学依据。

关键词：豆腐凝胶凝固剂加工条件形成机理品质调控

高质量发展视角下住院病案首页质控体系的应用效果分析

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现代医院 2024年第4期24卷 526-529页

作者：郑伟伟刘琳琳郭明霞河南中医药大学第五临床医学院//郑州人民医院河南郑州450100

目的探讨住院病案首页智能化质控与人工质控相结合的质控体系的应用效果,并分析住院病案首页填写缺陷的原因及改进措施。方法以智能化病案首页质控系统上线时间为节点,选取上线前2022年1月1日-2022年6月30日住院病案作为对照组研究对象... 详细信息

目的探讨住院病案首页智能化质控与人工质控相结合的质控体系的应用效果,并分析住院病案首页填写缺陷的原因及改进措施。方法以智能化病案首页质控系统上线时间为节点,选取上线前2022年1月1日-2022年6月30日住院病案作为对照组研究对象,上线后2023年1月1日-2023年6月30日住院病案作为观察组,对比分析两组住院病案首页填写缺陷情况。结果住院病案首页填写缺陷缺陷问题共分为17类,通过建立住院病案首页质控体系,观察组住院病案首页填写总体缺陷率(4.76%)较对照组(11.63%)下降6.87个百分点,各类问题缺陷率均有不同程度的下降。按首页填写问题缺陷率下降程度降序排序,下降明显的前三类缺陷问题依次是手术及操作漏填、主要诊断选择错误、其他诊断漏填,经过χ^(2)检验,P<0.05,统计数据差异有统计学意义。结论智能化质控系统与人工质控相结合的质控体系可显著提升住院病案首页质量,但仍需加强临床科室培训、住院病案首页绩效考核、信息化建设,持续确保住院病案首页质量的持续螺旋上升,促进公立医院高质量可持续发展。

关键词：高质量发展住院病案首页质量控制质控体系

QM/MM（ABEEM） Study on the Ligand Substitution Processes of Ruthenium（Ill） Complex NAMI-A

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Chinese Journal of Chemistry 2017年第3期35卷 354-362页

作者： Hui Li Ting-Ting Sun Chao Zhang linlin liu Dongxia Zhao Zhongzhi Yang Chemistry and Chemical Engineering Faculty Liaoning Normal University Dalian Liaoning 116029 China

QM combined with ABEEMσπ (atom‐bond electronegativity equalization method) fluctuating charge polarizable force field [QM/MM(ABEEM)] has been employed to investigate the hydrolysis mechanism of ruthenium(III) complex NAMI‐A. Eleven possible hydrolysis paths of NAMI‐A and its hydrolysates have been unveiled. Structures obtained by QM/MM (ABEEM) method were used to calculate the activation free energy by free energy perturbation theory. Based on analysis of structures and activation free energies, it is found that the rate of DMSO dissociation is faster than that of Cl − dissociation in the first step, which is in agreement with experimental results. Hydrolysates of the first step continue to hydrolyze with lower activation free energies than that of the first hydrolysis step, but the trans ‐position Cl − hydrolysis in the second step needs more time to perform. This can account for experimental phenomenon reasonably. We have simulated further hydrolysis paths of the hydrolysates, then found that both Cl − dissociation and DMSO dissociation take place in the third hydrolysis step and [RuCl(H 2 O) 4 (Im)] 2+ is the main solute in aqueous solution after the fourth hydrolysis step.

关键词： computational chemistry reaction mechanisms QM/MM(ABEEM) ABEEMσπ polarizable force field activation free energy

SPECIAL ISSUE： DISTRIBUTION OF NATIONAL INCOME IN A TRANSITIONAL ECONOMY Changes in the labor share of GDP： a U-shaped curve

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Social Sciences in China 2009年第4期30卷 131-153页

作者： David Daokui Li liu linlin Wang Hongling Center for China in the World Economy School of Economics and Management Tsinghua University Institute of Economics ChineseAcademy of Social Sciences

In this paper, we try to find some general rules and the structural factors that cause a fall in labor economic growth in countries all over the world, the by a U-shaped curve in which the tuming point is for labor share in primary distribution share. We show that, in the process of evolution of labor share is characterized $6,000 per capita GDP （in PPP, 2000）. We develop a model to explain this phenomenon that provides an in-depth explanation for Kuznets＇ inverted U hypothesis. Our findings indicate that the evolution of China＇s labor share is basically consistent with the model we have constructed. In addition, sectoral composition and the relative bargaining power of labor are also factors influencing labor share. These findings imply that labor share of primary distribution in China may enter an upward trajectory over the next two years. This process may be accelerated by the central government＇s policies for dealing with global financial crisis and by structural adjustment.

关键词： primary distribution labor share bargaining power of labor

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糖尿病足合并坏死性筋膜炎2例

中华糖尿病杂志 2024年第4期16卷 464-468页

作者：李延焘张会峰刘琳琳刘加文蔡子欣吕丽芳赵建军谢振军河南大学人民医院河南省人民医院内分泌科郑州450003 郑州大学人民医院河南省人民医院内分泌科郑州450003 河南省人民医院内分泌科郑州450003 河南省人民医院手足显微外科郑州450003

糖尿病足是糖尿病的严重并发症之一,若不及时诊断可快速进展为坏死性筋膜炎。该病在临床上相对罕见,一旦发生,治疗难度大、花费增加且预后极差。当糖尿病足合并坏死性筋膜炎时,病情更加复杂,从而进一步加重截肢和死亡风险。该文报道2例... 详细信息

糖尿病足是糖尿病的严重并发症之一,若不及时诊断可快速进展为坏死性筋膜炎。该病在临床上相对罕见,一旦发生,治疗难度大、花费增加且预后极差。当糖尿病足合并坏死性筋膜炎时,病情更加复杂,从而进一步加重截肢和死亡风险。该文报道2例糖尿病足合并坏死性筋膜炎的患者,以期为临床医师了解糖尿病足合并坏死性筋膜炎的临床特征,从而积极处理,以降低截肢率、改善其预后,延缓病情进展提供参考。

关键词：糖尿病足坏死性筋膜炎治疗

Ag-Ni/KCC-1的制备及其在草酸二甲酯加氢制乙醇酸甲酯中的催化性能

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高校化学工程学报 2024年第1期38卷 90-98页

作者：张舜光崔阳刘林林张金颐陈学青天津理工大学化学化工学院天津300384 中国天辰工程有限公司技术发展部天津300400 河北工业大学化工学院天津300401

针对草酸二甲酯(DMO)加氢制备乙醇酸甲酯(MG)反应中,银(Ag)基催化剂成本较高、催化性能不稳定等问题,为降低成本并提高催化性能,以水热合成法制备的树枝状纤维形二氧化硅纳米球(KCC-1)为载体,采用等体积浸渍法制备Ag/KCC-1、Ag-Ni/KCC-... 详细信息

针对草酸二甲酯(DMO)加氢制备乙醇酸甲酯(MG)反应中,银(Ag)基催化剂成本较高、催化性能不稳定等问题,为降低成本并提高催化性能,以水热合成法制备的树枝状纤维形二氧化硅纳米球(KCC-1)为载体,采用等体积浸渍法制备Ag/KCC-1、Ag-Ni/KCC-1负载型催化剂。考察了Ag的较优负载量及总负载量不变时,Ag与镍(Ni)较佳的质量比。结果表明,Ag/KCC-1催化剂中,不同Ag负载量的催化剂,其结构和催化性能均有所不同,Ag负载量(质量分数)为15%时,性能较好;Ag-Ni/KCC-1催化剂中,适量Ni的引入对催化剂的结构和催化性能均有明显提高,当Ag和Ni的负载量分别为12%和3%时,催化性能较佳,与单组分负载的Ag/KCC-1催化剂相比,DMO转化率由90.37%提高至96.75%,MG转化率由90.77%提高至92.48%,MG收率由82.04%提高至89.47%。

关键词：草酸二甲酯乙醇酸甲酯催化剂树枝状纤维形二氧化硅纳米球 Ag-Ni/KCC-1

Precursor synthesis strategy for polycyclic aromatic conjugated polymers on the application of supercapacitors

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Science China Chemistry 2018年第2期61卷 192-199页

作者： Zhenhua Zhang Weitao Ma Biao Xu Xuehong Zhou Cong Wang Zengqi Xie linlin liu Yuguang Ma Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology

Polycyclic aromatics (PCAs) possess excellent photoelectric properties, but the construction of such compounds has been a quite challenging subject of study, mainly due to very low solubility. Herein we report a precursor synthesis strategy for polycyclic aromatic conjugated polymers. A soluble precursor polymer, that containing fusible "double U-shaped aromatic"(DUA) and perylenetetracarboxydiimide (PDI) units, was firstly synthesized by Suzuki coupling. The stereo aromatic units in polymer backbone were found to be converted into polycyclic aromatic units, i.e. hexa-peri-hexabenzocoronene (HBC), by chemical or electrochemical oxidation, which resulted in a formation of insoluble polycyclic aromatic conjugated polymers. The electrochemical oxidations that occurred at the interface of electrode and solution exhibited higher cyclization reactivity and leads to the formation of high quality films on the electrode surface. Characterization by Raman and UV-visible (UV-Vis) spectroscopy validated the successful formation of this HBC structure. Some potential applications of such thin films are being explored, and here we focus on the characteristics of supercapacitors based on their excellent electrochemical properties.

关键词： polycyclic aromatics conjugated polymer electrochemical deposition supercapacitor

The effect of interfacial diffusion on device performance of polymer solar cells: a quantitative view by active-layer doping

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Science China Chemistry 2015年第2期58卷 317-322页

作者： Li Nian Jiadong Zhou Kai Zeng Xiaoyan Wu linlin liu Zengqi Xie Fei Huang Yuguang Ma Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology

The diffusion of constituent materials at interfaces is one of the key factors for device performance and stability. In this work, the effect of interfacial diffusion of a classic interfacial material PFN on device performance of polymer solar cells was studied quantitatively by doping PFN into active layer based on P3HT：PC61BM blend. The PCEs of devices with 550 ppm PFN de- crease to half compared to those of the control devices without PFN, which are mainly attributed to the decrease of short-circuit current （Jsc） and fill factor （FF）. Advanced analyses of equivalent circuit, absorption spectra, and atomic force mi- croscopy indicates that the presence of PFN in the active layer increases the leakage current, decreases the aggregation of P3HT, and reduces the phase separation. This research reveals the physical mechanism of interfacial diffusion in device per- forrnance and provides a basis for further improving the performance and stability of PSCs.

关键词： bulk-heterojunction solar cells interfacial diffusion PFN stability degradation

关于海绵城市规划建设管控体制机制建设的经验及思考

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建设科技 2024年第8期 42-44页

作者：侯爱月栗玉鸿雷雪飞赵翔刘霖淋中规院(北京)规划设计有限公司北京100044

海绵城市作为我国一项长期而艰巨的任务,系统化全域推进海绵城市建设,规划建设管控制度是重要保障,建立可执行、高效率的管控制度至关重要。本文以部分国家海绵城市建设示范城市和试点城市为例,对海绵城市建设在规划、设计、施工、验收... 详细信息

海绵城市作为我国一项长期而艰巨的任务,系统化全域推进海绵城市建设,规划建设管控制度是重要保障,建立可执行、高效率的管控制度至关重要。本文以部分国家海绵城市建设示范城市和试点城市为例,对海绵城市建设在规划、设计、施工、验收、运维等全过程管控制度的经验和重点进行了梳理和探讨,为其他城市提供借鉴和参考。

关键词：海绵城市管控制度规划设计施工验收运维