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不同种类黄骅低盐虾酱的营养测定与综合评价

中国酿造 2024年第6期43卷 252-257页

作者：朱洪智李彦国何雪娟李倩楠唐雯沧州医学高等专科学校河北沧州061000

该研究在制备3种低盐虾酱(低盐虾米酱、低盐虾丝酱和低盐对虾酱)的基础上,对其营养成分进行测定,采用营养质量指数(INQ)、营养素安全摄入上限(UL)、氨基酸评分(AAS)、致动脉粥样硬化指数(AI)和致血栓指数(TI)等指标对3种低盐虾酱进行综... 详细信息

该研究在制备3种低盐虾酱(低盐虾米酱、低盐虾丝酱和低盐对虾酱)的基础上,对其营养成分进行测定,采用营养质量指数(INQ)、营养素安全摄入上限(UL)、氨基酸评分(AAS)、致动脉粥样硬化指数(AI)和致血栓指数(TI)等指标对3种低盐虾酱进行综合评价。结果表明,低盐虾米酱、低盐对虾酱和低盐虾丝酱蛋白质的含量分别为14.80 g/100 g、14.90 g/100 g、13.70 g/100 g,且氨基酸评分均>97分,矿物质和维生素的INQ值均>1(1.51~30.80),维生素和矿物质风险指数较低(1.11%~13.33%),AI值和TI值分别为0.58、0.35、0.53;0.07、0.16、0.06,n-6不饱和脂肪酸/n-3不饱和脂肪酸(n-6PUFA/n-3PUFA)比值分别为0.12、0.98和0.16。因此,3种低盐虾酱是低能量、高营养食品,导致心血管疾病的风险较低。

关键词：低盐虾酱营养测定综合评价心血管疾病

结合剂比例和cBN粒度配比对PcBN复合材料微观结构和性能的影响

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金刚石与磨料磨具工程 2024年第2期44卷 185-192页

作者：邹芹董培航李艳国袁振雄武迪罗永安燕山大学亚稳材料制备技术与科学国家重点实验室河北秦皇岛066004 燕山大学机械工程学院河北秦皇岛066004

在高温高压条件下制备了聚晶立方氮化硼(PcBN)复合材料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)等研究了结合剂配比和立方氮化硼(cBN)粒度对PcBN复合材料的成分、微观结构、显微硬度和磨耗比的影响。实验结果表明:在压... 详细信息

在高温高压条件下制备了聚晶立方氮化硼(PcBN)复合材料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)等研究了结合剂配比和立方氮化硼(cBN)粒度对PcBN复合材料的成分、微观结构、显微硬度和磨耗比的影响。实验结果表明:在压力5.5 GPa,温度1400℃,保温10 min的烧结条件下,当V(TiN_(0.3))∶V(AlN)=70∶30时,PcBN复合材料性能较为优异,硬度最高达到22.7 GPa,磨耗比达到149.2;当PcBN复合材料中cBN粒度组合为V(0.5~1μm)∶V(2~5μm)∶V(5~10μm)=3∶5∶2时,颗粒之间的堆积密度达到最高,性能也达到最优。

关键词： PcBN复合材料高温高压结合剂粒度

现代医院建筑净化区域装修材料的选用探讨——北京安贞医院通州院区建设项目案例

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中国医院建筑与装备 2024年第2期25卷 66-72页

作者：刘杨李延国王志滨首都医科大学附属北京安贞医院北京100029 北京城建新城投资开发有限公司北京101300 北京城建集团医疗康养工程总承包部北京101300

结合北京安贞医院通州院区建设项目,阐述了医院洁净手术室、洁净走廊、洁净辅助用房等净化区域装修材料的选用原则及安贞医院项目所选材料的具体种类。洁净区装修材料的选用应遵循不产尘、不易积尘、耐腐蚀、耐碰撞、不开裂、防潮防霉... 详细信息

结合北京安贞医院通州院区建设项目,阐述了医院洁净手术室、洁净走廊、洁净辅助用房等净化区域装修材料的选用原则及安贞医院项目所选材料的具体种类。洁净区装修材料的选用应遵循不产尘、不易积尘、耐腐蚀、耐碰撞、不开裂、防潮防霉、容易清洁、环保节能和符合防火要求的原则。可通过对比不同装修材料的材质、色彩、纹理及造价等,综合考虑人性化、绿色、低碳、节能和经济等因素进行合理选材,从而营造出舒适、健康、美观、环保、和谐的诊疗环境。

关键词：医院建筑装修材料净化区域安贞医院通州院区

超大截面全焊钢结构桥塔工地自动化焊接技术研究

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焊接技术 2024年第3期53卷 72-76页

作者：李彦国许子凡薛喆彦中铁宝桥扬州有限公司江苏扬州225000

常泰长江大桥主塔上塔柱钢桥塔外轮廓为八边形,桥位高空吊装后既要施焊同段块体间纵向对接焊缝,又要完成塔段间横向对接焊缝的焊接。本研究以提升钢结构桥塔桥位焊接自动化率,控制其高空作业焊接质量,并保证多塔段连续匹配安装精度为主... 详细信息

常泰长江大桥主塔上塔柱钢桥塔外轮廓为八边形,桥位高空吊装后既要施焊同段块体间纵向对接焊缝,又要完成塔段间横向对接焊缝的焊接。本研究以提升钢结构桥塔桥位焊接自动化率,控制其高空作业焊接质量,并保证多塔段连续匹配安装精度为主要目标,大幅缩短架设工期,有力推动自动化焊接工艺在钢桥塔架设中的应用,加速桥梁建造技术向绿色低碳转型。

关键词：超大截面钢结构桥塔桥位自动化焊接

Selective hydrodeoxygenation of guaiacol to cyclohexanol using activated hydrochar-supported Ru catalysts

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Frontiers of Chemical Science and Engineering 2024年第5期18卷 13-22页

作者： Kaile li Shijie Yu Qinghai li yanguo Zhang Hui Zhou Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Beijing Key Laboratory of CO_(2) Utilization and Reduction TechnologyDepartment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore117585Singapore

lignin,an abundant aromatic polymer in nature,has received significant attention for its potential in the production of bio-oils and chemicals owing to increased resource availability and environmental *** hydrodeoxygenation of guaiacol,a lignin-derived monomer,can produce cyclohexanol,a nylon precursor,in a carbon-negative and environmentally friendly *** study explored the porous properties and the effects of activation methods on the Ru-based catalyst supported by environmentally friendly and cost-effective *** selective cleavage of C_(ary)-O bonds was achieved under mild conditions(160°C,0.2 MPa H_(2),and 4 h),and alkali activation further improved the catalytic *** characterization methods revealedthat hydrothermal treatment and alkali activation relatively contributed to the excellent performance of the catalysts and influenced their porous structure and Ru dispersion.X-ray photoelectron spectroscopy results revealed an increased formation of metallic ruthenium,indicating the effective regulation of interaction between active sites and *** synergistic approach used in this study,involving the valorization of cellulose-derived hydrochar and the selective production of nylon precursors from lignin-derived guaiacol,indicated the comprehensive and sustainable utilization of biomass resources.

关键词： hydrochar guaiacol cyclohexanol activation full-component utilization

New possibility for PET plastic recycling by a tailored hydrolytic enzyme

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Green Energy & Environment 2024年第2期9卷 163-165页

作者： Shijie Yu Qinghai li yanguo Zhang Hui Zhou Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Beijing Key Laboratory of CO_(2)Utilization and Reduction TechnologyDepartment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China

Plastic waste puts a huge burden on the ecosystem due to the current lack of mature recycling ***(ethylene terephthalate)(PET)is one of the most produced plastics in the *** decomposition holds the promise of recovering monomers from PET plastic,and the monomers can be used to regenerate new PET ***,there are still limitations in the activity and thermal stability of the existing PET *** recent study by Lu et *** a novel PET hydrolase via machine learning-aided *** obtained PET hydrolase showed excellent activity and thermal stability in the hydrolysis of PET and is capable of directly degrading large amounts of postconsumer PET *** approach provides an effective method for recycling PET waste and is expected to improve the current state of plastic pollution worldwide.

关键词： Plastic waste Poly(ethylene terephthalate) Hydrolysis Machine learning Enzymatic depolymerization Hydrolases

Post-disaster spatial reconstruction from the perspective of a rural settlement niche in the upper reaches of the Minjiang River

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Journal of Mountain Science 2024年第5期21卷 1630-1646页

作者： liU yanguo WANG li ZOU Qiang li Jingji LU Yafeng li lin XU Binni WANG lihui Tianfu Institute of Research and Innovation Southwest University of Science and TechnologyChengdu 610299China Mianyang Science and Technology City Division the National Remote Sensing Center of ChinaSouthwest University of Science and TechnologyMianyang 621010China Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610299China State Key Laboratory of Geo-hazard Prevention and Geo-environment Protection(Chengdu University of Technology) Chengdu 610059China Tianfu New Area Park City Construction Bureau Chengdu Municipal Bureau of Planning and Nature ResourcesChengdu 610218China

Post-disaster recovery and reconstruction provide an effective way to reduce the disaster vulnerability of, and promote leapfrog development in, an affected area. To date, studies that have used administrative boundaries to investigate the reconstruction of settlement space have not been able to clearly define the real boundaries of land use changes or quantify the degree of response to the ‘Build-Back-Better’ initiative, and have lacked any consideration of the fourth reconstruction stage–development period(10 years). This study constructed a mountain settlement niche and analyzed the characteristics, spatial reconstruction, and drivers of rural settlements during 2009–2019 in the upper reaches of the Minjiang River, southwest China. The results showed the following:(1) Natural factors were the basis for the formation and development of mountain settlement niches. The scale of the settlement niche and its land use structure depended on the physical geography features and the ethnic farming and grazing traditions. The settlement niche provided a realistic boundary for the spatial reconstruction.(2) The layout of residential land around cropland was the common feature of the mountain settlement niche. Of all the land use types, the roads and rural residential lands showed the most change over the 10 years;13,860 residential patches increased in size and 4,742 patches were abandoned.(3) The area of orchards, planted to reconstruct the economy in the mountains, increased by nearly 2.5 times.(4) Collapses, landslides, and debris flow disasters and the ecological red line influenced the spatial reconstruction. While the main focus of post-disaster recovery is spatial reconstruction, initiatives should include economic and spiritual recovery, and should also achieve sustainable development of the region.

关键词： Rural settlements Spatial reconstruction Settlement niche Post-Wenchuan Earthquake Reconstruction Southwest China

苯酚-甲醛树脂MK-95在轿车子午线轮胎胎体胶中的应用

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轮胎工业 2024年第7期44卷 426-429页

作者：冯鸣王学梅朱舒东张丽丽李彦果邢涛山东玲珑轮胎股份有限公司山东招远265400

研究苯酚-甲醛树脂MK-95(简称MK-95)在轿车子午线轮胎胎体胶中的应用。结果表明:MK-95不含游离间苯二酚和其他添加剂,其软化点和挥发分含量低于间苯二酚-甲醛树脂;在胎体胶中以MK-95等量替代间苯二酚-甲醛树脂,胶料的硫化特性、物理性... 详细信息

研究苯酚-甲醛树脂MK-95(简称MK-95)在轿车子午线轮胎胎体胶中的应用。结果表明:MK-95不含游离间苯二酚和其他添加剂,其软化点和挥发分含量低于间苯二酚-甲醛树脂;在胎体胶中以MK-95等量替代间苯二酚-甲醛树脂,胶料的硫化特性、物理性能、动态力学性能和粘合性能相当,成品轮胎的高速、耐久和路试性能均达到要求。

关键词：苯酚-甲醛树脂轿车子午线轮胎胎体胶粘合性能

Comprehensive landscape of resistance mechanisms for neoadjuvant therapy in esophageal squamous cell carcinoma by single-cell transcriptomics

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Signal Transduction and Targeted Therapy 2023年第9期8卷 3920-3922页

作者： Yushang Yang yanguo li Haopeng Yu Zhenyu Ding Longqi Chen Xiaoxi Zeng Shunmin He Qi liao Yi Zhao Yong Yuan Department of Thoracic Surgery West China HospitalSichuan UniversityChengduSichuanChina Zhejiang Key Laboratory of Pathophysiology Health Science CenterNingbo UniversityNingboZhejiangChina West China Biomedical Big Data Center West China HospitalSichuan UniversityChengduSichuanChina

Dear Editor,Preoperative neoadjuvant therapy combined with surgical resection is the standard treatment for locally advanced esopha-geal squamous cell carcinoma(ESCC).However,more than half of patients having a partial response to neoadjuvant therapy,which is considered as a therapy-resistant phenotype and the mechan-ism is still *** heterogeneity of the ESCC with surgery alone therapy were characterized by single-cell RNA sequencing(scRNA-seq)previously,but few report was about ESCC patients with neoadjuvant therapy.1 It is emergent to illustrate the comprehensive hallmarks of neoadjuvant therapy-resistance in ESCC at single cell level.

关键词： neoadjuvant squamous esophageal