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Expansive Soil Stabilization by Bagasse Ash in Partial Replacement of Cement

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Journal of Renewable Materials 2023年第4期11卷 1911-1935页

作者： Waleed Awadalseed Honghua Zhao Hemei Sun ming huang Cong Liu State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsDalian University of TechnologyDalian116023China State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsInternational Research Center for Computational MechanicsDalian University of TechnologyDalian116023China Department of Geotechnical Engineering College of Civil EngineeringHunan UniversityChangsha410082China College of Civil Engineering Fuzhou UniversityFuzhou350116China

This study examined the effects of using bagasse ash in replacement of ordinary Portland cement(OPC)in the treatment of expansive *** study concentrated on the compaction characteristics,volume change,compressive strength,splitting tensile strength,microstructure,California bearing ratio(CBR)value,and shear wave velocity of expansive soils treated with *** bagasse ash replacement ratios were used to create soil *** varying curing times of 7,14,and 28 days,standard compaction tests,unconfined compressive strength tests,CBR tests,Brazilian split tensile testing,and bender element(BE)tests were carried *** to X-ray diffraction(XRD)investigations,quartz and crystobalite make up the majority of the minerals in bagasse *** ash contains a variety of grain sizes,including numerous fiber-shaped particles,according to a scanning electronic microscope(SEM)*** all of the treated specimens with various replacement ratios,the overall additive content has not *** results of the Brazilian split tensile tests demonstrate improved tensile strength for all specimens with various replacement proportions.A lower maximum dry density and a greater optimal water content would result from the substitution of bagasse *** the replacement ratio is not more than 20%,the CBR values of the parts replaced specimens are even higher than the cement *** results of BE testing on the treated soils show that there is significant stiffness anisotropy but that it steadily diminishes with curing time and replacement *** to the study,bagasse ash is a useful mineral additive,and the best replacement ratio(CBA20)is 20%.

关键词： Expansive soil bagasse ash cement calcium silicate hydrate(CSH) stiffness anisotropy

Active site identification and engineering during the dynamic evolution of copper-based catalysts for electrocatalytic CO_(2) reduction

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Science China Chemistry 2023年第1期66卷 78-95页

作者： Bangwei Deng Xueyang Zhao Yizhao Li ming huang Shihan Zhang Fan Dong Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of EnvironmentZhejiang University of TechnologyHangzhou 310014China

To date,copper-based catalysts are one of the most prominent catalysts that can electrochemically reduce CO_(2)towards highvalue fuels or chemicals,such as ethylene,ethanol,and acetic ***,the chemically active feature of Cu-based catalysts hinders the understanding of the intrinsic catalytic active sites during the initial and the operative processes of electrochemical CO_(2)reduction(CO_(2)RR).The identification and engineering of active sites during the dynamic evolution of catalysts are thereby vital to further improve the activity,selectivity,and durability of Cu-based catalysts for high-performance CO_(2)*** this regard,four triggers for the dynamic evolution of catalysts were introduced in ***,three typical active-site theories during the dynamic reconstruction of catalysts were *** addition,the strategies in catalyst design were summarized according to the latest reports of Cu-based catalysts for CO_(2)RR,including the tuning of electronic structure,controlling of the external potential,and regulation of local catalytic ***,the conclusions and perspectives were provided to inspire more investigations and studies on the intrinsic active sites during the dynamic evolution of catalysts,which could promote the optimization of the catalyst system to further improve the performance of CO_(2)RR.

关键词： active site dynamic reconstruction copper-based catalysts electrochemical CO_(2)reduction local catalytic environment

UPLC-Q-Exactive-Orbitrap-MS法同时测定牛黄上清片中18种胆汁酸的含量

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中成药 2024年第4期46卷 1065-1072页

作者：林晨洪芳陈俊裕林诗铃郑燕芳黄鸣清福建省食品药品质量检验研究院福建福州350012 福建中医药大学福建福州350122

目的建立超高效液相色谱-四极杆-静电场轨道阱高分辨质谱(UPLC-Q-Exactive-Orbitrap-MS)法同时测定牛黄上清片中牛磺胆酸、7-酮-3α,12-α-羟基胆烷酸、甘氨猪去氧胆酸、12-脱氢胆酸、甘氨胆酸、3-酮-7α,12α-二羟基-5β-胆烷酸、牛... 详细信息

目的建立超高效液相色谱-四极杆-静电场轨道阱高分辨质谱(UPLC-Q-Exactive-Orbitrap-MS)法同时测定牛黄上清片中牛磺胆酸、7-酮-3α,12-α-羟基胆烷酸、甘氨猪去氧胆酸、12-脱氢胆酸、甘氨胆酸、3-酮-7α,12α-二羟基-5β-胆烷酸、牛磺鹅去氧胆酸、3α-羟基-7-氧代-5β-胆烷酸、猪胆酸、牛磺脱氧胆酸钠、猪去氧胆酸、胆酸、甘氨鹅脱氧胆酸、甘氨脱氧胆酸、牛磺石胆酸钠、鹅去氧胆酸、去氧胆酸、石胆酸的含量。方法分析采用Thermo Fisher Scientfic Bremen HYPERSIL GOLD色谱柱(2.1 mm×100 mm, 1.9μm);流动相0.1%甲酸-甲醇,梯度洗脱;体积流量0.2 mL/min;柱温40℃;加热电喷雾离子源;负离子扫描;平行反应监测模式。再进行化学模式识别。结果 18种胆汁酸在各自范围内线性关系良好(r≥0.999 5),平均加样回收率96.73%~104.07%,RSD 2.10%~4.07%。不同厂家样品中各胆汁酸在种类和含量上存在一定差异。结论该方法灵敏可靠,专属性好,可用于牛黄上清片的质量控制。

关键词：牛黄上清片胆汁酸含量测定超高效液相色谱-四极杆-静电场轨道阱高分辨质谱(UPLC-Q-Exactive-Orbitrap-MS) 化学模式识别

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风电叶片用聚氨酯树脂匹配性能研究

胶体与聚合物 2024年第2期42卷 72-74页

作者：喻雄黄逸舟陈煌黄明富付国良冯学斌株洲时代新材料科技股份有限公司湖南株洲412000

为了探究聚氨酯树脂在风电叶片上工程化应用的可能性,本文对比研究了聚氨酯树脂与环氧树脂、油漆、夹芯泡沫材料、环氧结构胶之间的匹配性。结果表明:聚氨酯与环氧树脂之间具有优良的界面性能;风电常用油漆与聚氨酯复材间的界面性能较好... 详细信息

为了探究聚氨酯树脂在风电叶片上工程化应用的可能性,本文对比研究了聚氨酯树脂与环氧树脂、油漆、夹芯泡沫材料、环氧结构胶之间的匹配性。结果表明:聚氨酯与环氧树脂之间具有优良的界面性能;风电常用油漆与聚氨酯复材间的界面性能较好;balsa木、PET、PVC三种夹芯泡沫材料与聚氨酯复合材料之间的界面性能优良;聚氨酯复材与环氧结构胶之间匹配性较好。

关键词：聚氨酯风电叶片力学性能

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颅骨切除减压术的临床应用进展

中国临床神经外科杂志 2024年第1期29卷 42-45页

作者：叶明煌蒋传路(综述) 张俊和(审校) 哈尔滨医科大学附属第二医院神经外科哈尔滨150086

神经系统疾病常伴有脑组织肿胀,从而导致颅内压增高。当颅内压增高到药物治疗无效时,手术是一种主流选择,一般采用颅骨切除减压术。颅骨切除减压术为肿胀的脑组织提供了代偿空间,降低了封闭颅腔内的压力。不同疾病导致的颅内压增高病人... 详细信息

神经系统疾病常伴有脑组织肿胀,从而导致颅内压增高。当颅内压增高到药物治疗无效时,手术是一种主流选择,一般采用颅骨切除减压术。颅骨切除减压术为肿胀的脑组织提供了代偿空间,降低了封闭颅腔内的压力。不同疾病导致的颅内压增高病人在颅骨切除减压术中是否需要切除病变脑组织以及皮瓣的设计、头皮下软组织的处理、骨瓣大小和硬脑膜减压要求等尚无统一意见。本文就颅骨切除减压术的临床应用进展进行综述。

关键词：颅骨切除减压术颅内压增高脑水肿

Formation of advanced glycation end products in raw and subsequently boiled broiler muscle:biological variation and effects of postmortem ageing and storage

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Food Science and Human Wellness 2022年第2期11卷 255-262页

作者： Suhong huang Xiaoli Dong Yali Zhang Yuru Chen Yajie Yu ming huang Yuandong Zheng Nanjing Innovation Center of Meat Products Processing Jiangsu Collaborative Innovation Center of Meat Production and ProcessingQuality and Safety Controland College of Food Science and TechnologyNanjing Agricultural UniversityNanjingJiangsu 210095China Nanjing huangjiaoshou Food Science Technology Co. Ltd.National R&D Center for Poultry Processing TechnologyNanjingJiangsu 210095China Henan Province Qi County Yongda Food Industry Co. Ltd.HebiHenan 458000China

The study aimed to investigate and compare the contents of carboxymethyllysine(CML)in two kinds of broilers during postmortem ageing and *** contents of CML in raw and boiled(100℃,30 min)broiler briskets and legs which were from white feather broilers(n=8)and yellow feather broilers(n=8)with ageing and storage at 4℃for 0-168 h were *** ageing and storage had a significant(P0.05)change,while that in boiled brisket meat significantly(P0.05)effect on the CML contents in raw/boiled yellow feather ***,CML contents in white feather broilers were much higher than that in yellow feather ***,white feather broilers can be selected as the research object to study the mechanism of ageing and storage on CML content in the postmortem broiler in the future.

关键词： Carboxymethyllysine Broiler Postmortem ageing Storage Heating

可回收热固性环氧树脂及其玻纤增强复合材料性能研究

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胶体与聚合物 2024年第1期42卷 7-10页

作者：杜雷黄逸舟陈煌黄明富喻雄王靖付国良株洲时代新材料科技股份有限公司湖南株洲412000

为了研究可回收环氧树脂R与风电叶片中常规环氧灌注树脂的区别,采用真空灌注工艺制备了玻璃纤维增强可回收热固性复合材料,对比分析了树脂之间的材料性能以及其复合材料之间的力学性能。结果表明,可回收树脂R的粘度与常规灌注树脂相近,... 详细信息

为了研究可回收环氧树脂R与风电叶片中常规环氧灌注树脂的区别,采用真空灌注工艺制备了玻璃纤维增强可回收热固性复合材料,对比分析了树脂之间的材料性能以及其复合材料之间的力学性能。结果表明,可回收树脂R的粘度与常规灌注树脂相近,适用期长于常规灌注树脂,适用于风电叶片的真空灌注工艺;放热峰出现时间略早于常规灌注树脂,有利于减少生产工时;其本体性能、复合材料力学性能与常规灌注树脂大体相当;可回收树脂R与常规灌注树脂的之间具有良好的界面性能,表明该树脂可以通过先制备部件然后整体灌注成型的方式制造大型复合材料制件。

关键词：可回收树脂热固性复合材料力学性能风电叶片

Fluorine Substitution Effect on the Material Properties in Transparent Aromatic Polyimides

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Chinese Journal of Polymer Science 2022年第7期40卷 781-788页

作者： Wei-Feng Peng Huan-Yu Lei Xin-Xin Zhang Lu-Hao Qiu ming-Jun huang South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou510640China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou510640China

The recent development of flexible display technology raised additional requirements for optical and electric properties of polyimides,accelerating the structure and property tunning of transparent *** unique electronic effect and steric hindrance effect of fluorine substitutions make fluorine-containing polyimides occupy an important position in the transparent polyimide *** this work,a series of transparent aromatic polyimides were prepared from a fixed 4,4’-(hexafluoroisopropylidene)diphthalic anhydride(6FDA)and biphenyl diamines with different substitute groups at the 2,2’,6,6’-*** systematically studied the effects of pendant groups on the thermal,mechanical,optical and dielectric properties of these 6FDA-based polyimides with the aid of density function theory(DFT)*** particular,we paid special attention to the simple but compact fluoro group *** simple fluoro substitution brought the advantages of maintaining the linearity of the backbone and dense polymer chain packing,which would minimize the weakening of polyimides’inherent thermal,dimensional and mechanical *** with trifluoromethyl substituted polyimides with the best optical transparency,polyimides containing fluoro substitutes exhibited slightly decreased optical transparency,but increased thermal and dimensional stability and higher mechanical *** results could shed light on the ultimate transparent polyimide film development toward the application in extreme working condition,e.g.,the colorless polyimide substrate film for the flexible display technology.

关键词： Polyimides Fluorine substitution Transparent Dielectric Colorless

“英雄的王海大队”:与时代共奋飞的空战先锋

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中国军队（中西文版） 2024年第1期 32-41页

作者：黄明刘济美张瑞杰黄一宸 XINHUA(图) 余红春(图) 不详

和平的天空,是英雄的天空。70多年前,组建刚满一年、人均飞行时间只有几十小时的他们,以“空中拼刺刀”的血性胆气,在朝鲜战场迎战强敌,击落击伤敌机29架,创造了“15:0”的辉煌战绩。70多年来,“闻战则喜、英勇顽强、敢打必胜、有我无... 详细信息

和平的天空,是英雄的天空。70多年前,组建刚满一年、人均飞行时间只有几十小时的他们,以“空中拼刺刀”的血性胆气,在朝鲜战场迎战强敌,击落击伤敌机29架,创造了“15:0”的辉煌战绩。70多年来,“闻战则喜、英勇顽强、敢打必胜、有我无敌”的强军报国之志,在血脉流尚中代代传承——他们先后5次率先换装新型战机,成为捍卫国家主权、安全、发展利益的长空利剑。

关键词：朝鲜战场国家主权报国之志英勇顽强英雄