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苯乙烯抽提装置苯乙烯脱色控制

辽宁化工 2024年第2期53卷 323-325页

作者：迟锋刁晶晶姜武林潘多星新疆天利石化股份有限公司新疆克拉玛依833699

裂解汽油抽提得到的粗苯乙烯呈黄色,工业上主要应用有硝酸、有机酸两种脱色方法。硝酸脱色利用硝酸与粗苯乙烯中的着色物质发生氧化反应,然后通过碱中和、水洗以及蒸馏,实现粗苯乙烯的脱色目的。苯乙烯的色度直接影响精致苯乙烯的判级,... 详细信息

裂解汽油抽提得到的粗苯乙烯呈黄色,工业上主要应用有硝酸、有机酸两种脱色方法。硝酸脱色利用硝酸与粗苯乙烯中的着色物质发生氧化反应,然后通过碱中和、水洗以及蒸馏,实现粗苯乙烯的脱色目的。苯乙烯的色度直接影响精致苯乙烯的判级,混合器是苯乙烯抽提装置粗苯乙烯脱色的主要场所,为了使粗苯乙烯的达到要求的脱色效果,需要从脱色剂硝酸浓度、脱色温度、脱色场所运行等方面进行有效的控制。从影响粗苯乙烯脱色几个方面进行了分析、解读、说明,对影响苯乙烯抽提装置脱色效果的几方面的控制,给予了一定操作建议。

关键词：苯乙烯抽提硝酸脱色温度乳化层混合器

强光干扰ICCD微光夜视系统仿真方法研究与评价

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计算机与数字工程 2024年第2期52卷 359-363页

作者：罗浩波刁晶晶张瑞志涂震飚华中科技大学人工智能与自动化学院多谱信息处理技术国家重点实验室武汉430074 中国人民解放军63629部队北京100076 北京机电工程研究所北京100074

论文重点考虑近贴聚焦式像管结构的ICCD图像传感器,利用OSG渲染引擎设计了一套完整的微光视景仿真系统,支持实时并大量地生成多条件任意视角下逼真的微光影像,已基本达到国外成熟商业软件的要求。针对微光系统易受干扰的问题,论文模拟... 详细信息

论文重点考虑近贴聚焦式像管结构的ICCD图像传感器,利用OSG渲染引擎设计了一套完整的微光视景仿真系统,支持实时并大量地生成多条件任意视角下逼真的微光影像,已基本达到国外成熟商业软件的要求。针对微光系统易受干扰的问题,论文模拟出场景依次叠加传感器调制传递效应、噪声因子和强光干扰后的成像效果,引入了图像的灰度均值、均方误差、信噪比、相关度等指标,完成对ICCD夜视系统抗干扰特性的定量评价。

关键词：微光夜视系统微光视景仿真强光干扰 ICCD

3D printed pore morphology mediates bone marrow stem cell behaviors via RhoA/ROCK2 signaling pathway for accelerating bone regeneration

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Bioactive Materials 2023年第8期26卷 413-424页

作者： Qiji Lu jingjing diao Yingqu Wang Jianlang Feng Fansen Zeng Yan Yang Yudi Kuang Naru Zhao Yingjun Wang School of Materials Science and Engineering South China University of TechnologyGuangzhou510641PR China National Engineering Research Center for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou510006PR China NMPA Key Laboratory for Research and Evaluation of Innovative Biomaterials for Medical Devices.Guangzhou 510006PR China Medical Devices Research&Testing Center of SCUT Guangzhou510006PR China School of Biomedical Sciences and Engineering South China University of TechnologyGuangzhou International CampusGuangzhou511442PR China Guangdong Institute of Advanced Biomaterials and Medical Devices Guangzhou510535PR China

Bone bionics and structural engineering have sparked a broad interest in optimizing artificial scaffolds for better bone ***,the mechanism behind scaffold pore morphology-regulated bone regeneration remains unclear,making the structure design of scaffolds for bone repair *** address this issue,we have carefully assessed diverse cell behaviors of bone mesenchymal stem cells(BMSCs)on theβ-tricalcium phosphate(β-TCP)scaffolds with three representative pore morphologies(i.e.,cross column,diamond,and gyroid pore unit,respectively).Among the scaffolds,BMSCs on theβ-TCP scaffold with diamond pore unit(designated as D-scaffold)demonstrated enhanced cytoskeletal forces,elongated nucleus,faster cell mobility,and better osteogenic differentiation potential(for example,the alkaline phosphatase expression level in D-scaffold were 1.5-2 times higher than other groups).RNA-sequencing analysis and signaling pathway intervention revealed that Ras homolog gene family A(RhoA)/Rho-associated kinase-2(ROCK2)has in-depth participated in the pore morphology-mediated BMSCs behaviors,indicating an important role of mechanical signaling transduction in scaffold-cell ***,femoral condyle defect repair results showed that D-scaffold could effectively promote endogenous bone regeneration,of which the osteogenesis rate was 1.2-1.8 times higher than the other ***,this work provides insights into pore morphology-mediated bone regeneration mechanisms for developing novel bioadaptive scaffold designs.

关键词： Bone mesenchymal stem cells 3D-printed scaffold Pore morphology Bone regeneration Structure-osteogenesis relationship

3D-printed bioactive ceramic scaffolds with biomimetic micro/nano-HAp surfaces mediated cell fate and promoted bone augmentation of the bone-implant interface in vivo

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Bioactive Materials 2022年第6期7卷 120-132页

作者： Xiao Liu Yali Miao Haifeng Liang jingjing diao Lijing Hao Zhifeng Shi Naru Zhao Yingjun Wang National Engineering Research Center for Tissue Restoration and Reconstruction GuangzhouChina School of Materials Science and Engineering South China University of TechnologyGuangzhou510641China Guangdong Province Key Laboratory of Biomedical Engineering South China University of TechnologyGuangzhou510006China Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education South China University of TechnologyGuangzhou510006PR China Innovation Center for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou510006PR China Department of Orthopedics Zhujiang HospitalSouthern Medical UniversityNo.253 Industrial AvenueHaizhuGuangzhou510280People’s Republic of China Medical Devices Research&Testing Center of SCUT Guangzhou510006PR China Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) 510005 GuangzhouChina

Calcium phosphate bio-ceramics are osteo-conductive,but it remains a challenge to promote the induction of bone augmentation and capillary *** surface micro/nano-topography of materials can be recognized by cells and then the cell fate are *** regulation methods of carving surface structures on bio-ceramics employ mineral reagents and organic additives,which might introduce impurity phases and affect the biological *** a previous study,a facile and novel method was utilized with ultrapure water as the unique reagent for hydrothermal treatment,and a uniform hydroxyapatite(HAp)surface layer was constructed on composite ceramics(β-TCP/CaSiO_(3))in *** combined with 3D printing technology,biomimetic hierarchical structure scaffolds were fabricated with interconnected porous composite ceramic scaffolds as the architecture and micro/nano-rod hybrid HAp as the surface *** obtained HAp surface layer favoured cell adhesion,alleviated the cytotoxicity of precursor scaffolds,and upregulated the cellular differentiation of mBMSCs and gene expression of HUVECs in *** vivo studies showed that capillary formation,bone augmentation and new bone matrix formation were upregulated after the HAp surface layer was obtained,and the results confirmed that the fabricated biomimetic hierarchical structure scaffold could be an effective candidate for bone regeneration.

关键词： 3D printed porous scaffold Bioactive ceramics HAp surface layer Cell fate mediation Bone augmentation

The Inhibiting Effect of Bone Protein Hydrolysates on Lipid Oxidation in Pork Patties

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Journal of Northeast Agricultural University(English Edition) 2009年第1期16卷 29-34页

作者： diao jingjing diao Xinping KONG Baohua CHEN Hongsheng College of Food Science Heilongjiang August First Land Reclamation University Daqing 163319 Heilongjiang China College of Food Science Northeast Agricultural University Harbin 150030 China College of Animal Science and Technology Northeast Agricultural University Harbin 150030 China

Bone protein hydrolysates were prepared by limited alcalase hydrolysis （5 h）. The hydrolysates were formulated （0-3%, w/w） into pork patties to determine the antioxidant efficacy. 0.02% BHA （butylated hydroxyanisole） was used as a positive control. Lipid oxidation in patties during storage was analyzed by measuring the TBARS and protein carbonyl content. The results showed that bone protein hydrolysates possessed significant antioxidant activity, and antioxidant activity increased with the increasing hydrolysates concentration. Sensory evaluation indicated that bone protein hydrolysates improved the color and decreased lipid oxidation flavor of pork patties. The 2% bone hydrolysates possessed the highest antioxidant activity and better sensory quality, and its effect was closed to 0.02% BHA.

关键词： bone protein hydrolysates antioxidants pork patties lipid oxidation

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高活性豌豆抗氧化肽的分离纯化方法

中国食品学报 2014年第6期14卷 133-141页

作者：刁静静张丽萍黑龙江八一农垦大学一省农产品加工工程技术研究中心黑龙江大庆163319

以酶解豌豆蛋白获得的抗氧化肽粗品为原料,采用葡聚糖凝胶G-25、膜分离和模拟移动床色谱进行分离纯化,利用RP-HPLC对纯化样品的相对分子质量分布进行分析,并测定纯化样品的TBARS值、DPPH·清除能力。结果表明,豌豆肽粗品中分子质量<1 k... 详细信息

以酶解豌豆蛋白获得的抗氧化肽粗品为原料,采用葡聚糖凝胶G-25、膜分离和模拟移动床色谱进行分离纯化,利用RP-HPLC对纯化样品的相对分子质量分布进行分析,并测定纯化样品的TBARS值、DPPH·清除能力。结果表明,豌豆肽粗品中分子质量<1 ku的肽级分所占比重较大,并具有较高的抗氧化活性。用葡聚糖凝胶G-25纯化后得到5个肽级分,其高活性抗氧化肽级分的相对分子质量在700 u左右;膜分离纯化后分子质量<1 ku的肽级分抗氧化活性较高,尤其是DPPH·清除能力较其他级分高;模拟移动床(Simulated Moving Bed,SMB)色谱纯化的高活性抗氧化肽级分分子质量约700 u,其抗氧化活性高,分离效率高,可达到产业化分离水平。

关键词：豌豆抗氧化肽分离纯化模拟移动床色谱

大蒜提取物与有氧气调包装复合对冷却肉的保鲜研究

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食品与发酵工业 2008年第4期34卷 131-136页

作者：陈洪生孔保华刁静静东北农业大学食品学院黑龙江哈尔滨150030 黑龙江八一农垦大学食品学院黑龙江大庆市163319

将大蒜提取物与气调包装复合对冷却肉进行保鲜试验。用不同浓度的大蒜提取物与低氧气调包装(50%CO_2、40%O_2、10%N_2)复合进行试验,分别测定硫代巴比妥酸反应物质(thiobarbituric acid-reactive sub- stances,TBARS)、pH值、α*值(红度... 详细信息

将大蒜提取物与气调包装复合对冷却肉进行保鲜试验。用不同浓度的大蒜提取物与低氧气调包装(50%CO_2、40%O_2、10%N_2)复合进行试验,分别测定硫代巴比妥酸反应物质(thiobarbituric acid-reactive sub- stances,TBARS)、pH值、α*值(红度值)、细菌总数对冷却肉进行测定,得出2%的大蒜提取物可以达到理想的抑菌效果,但是低氧气调包装不能使肉色保持鲜亮颜色,所以用2%大蒜提取物与高氯气调包装、抗氧化剂复合对冷却肉保鲜,得出最佳的保鲜配方:2%大蒜提取液+250mg/kg Nisin(乳酸链球菌素)+1%乳酸+0.05%Ve溶液+高氧MAP(modified atmosphere packaging)(20%CO_2、80%O_2),可以使冷却肉在保存至21 d时仍保持鲜红的颜色,贷架期大大延长。

关键词：大蒜提取物冷却肉气调包装保鲜

肉类保藏技术(十二) 生物防腐剂在肉品保鲜中的应用(一)——乳酸链球菌素和纳他霉素

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肉类研究 2009年第3期23卷 64-69页

作者：刁静静黑龙江省农产品加工工程技术研究中心大庆165519

乳酸链球菌素和纳他霉素都属于抗菌剂。本文分别介绍了乳酸链球菌素和纳他霉素的结构、理化性质,扼要的介绍了他们抑菌机理及使用安全性,对于他们在肉品中的防腐保鲜应用作了系统的阐述。

关键词：乳酸链球菌素纳他霉素肉制品保鲜

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不同淀粉对低脂羊肉酥肉品质的影响

食品工业科技 2023年第19期44卷 32-38页

作者：刘欣曹荣安陈洪生刁静静黑龙江八一农垦大学食品学院黑龙江大庆163319 黑龙江八一农垦大学国家杂粮工程技术研究中心黑龙江大庆163319

为了探究不同淀粉对低脂羊肉酥肉理化性质和感官品质的影响,本文分别采用马铃薯淀粉、红薯淀粉、绿豆淀粉为挂浆原料制作羊肉酥肉,以挂浆率、出品率、色度、水分分布、脂肪含量、质构特性和感官品质为评价指标,考察不同类型挂浆淀粉对... 详细信息

为了探究不同淀粉对低脂羊肉酥肉理化性质和感官品质的影响,本文分别采用马铃薯淀粉、红薯淀粉、绿豆淀粉为挂浆原料制作羊肉酥肉,以挂浆率、出品率、色度、水分分布、脂肪含量、质构特性和感官品质为评价指标,考察不同类型挂浆淀粉对低脂羊肉酥肉品质的影响。实验结果表明:以三种淀粉作为挂浆原料制作的低脂羊肉酥肉品质显著不同(P<0.05),其中红薯淀粉作为挂浆淀粉效果最佳,其挂浆率和出品率分别为55.28%和145.29%;外壳和肉中的脂肪含量分别为18.09%和3.78%,显著低于其他处理组(P<0.05);通过低场核磁共振技术(low-field nuclear magnetic resonance,LF-NMR)的结果得出,红薯淀粉处理组介于T22范围内峰面积A22和信号幅度最大,不易流动水含量最多;该处理组样品的硬度和咀嚼度最小,分别为2143.53 N和953.87 mJ,肉质嫩;且红薯淀粉处理组小酥肉外壳黄度值b为23.39,色泽金黄;总体感官评价指标也较高。绿豆淀粉处理组具有较高的挂浆率和出品率,分别为75.30%和150.12%,酥脆度较高,但颜色较差,外壳和肉中的脂肪含量分别为25.72%和5.20%,高于红薯淀粉处理组。马铃薯淀粉处理组的肉质偏硬。综合考虑,红薯淀粉是作为低脂羊肉酥肉的挂浆淀粉的最优选择。

关键词：羊肉酥肉淀粉品质吸油率

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