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Corrosion Behavior of Pre-oxidized GH4169 Alloy with Solid NaCI Deposited in a Wet Oxygen Flow at 600 ℃

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1249-1264页

作者： weidong zhang Yu Cui Li Liu Wenquan Wang Wenzheng Chen Rui Li Fuhui Wang Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang110819China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang110016China

The corrosion behavior of the pre-oxidized GH4169 alloy was studied after 20 h of exposure under a solid NaCl deposit film in a wet O_(2) environment at 600℃ by mass-gain measurements,X-ray diffraction,scanning electron microscopy,transmission electron microscopy *** results indicate that the pre-oxidized GH4169 alloy undergoes serious corrosion in the corrosive *** preformed Cr_(2)O_(3) layer is gradually destroyed by deposit NaCl,and the inner Nb2O5 layer beneath the complete outer Cr_(2)O_(3) layer also reacts with NaCl to form NaNbO_(3).The electrochemical test results testified the existence of electrochemical reactions during this corrosion *** corrosion behavior of pre-oxidized GH4169 under a solid NaCl deposit film in a wet O_(2) environment at 600℃has been discussed in detail.

关键词： Pre-oxidation Solid NaCl Wet O2 Electrochemical corrosion

Insights into therapeutic peptides in the cancerimmunity cycle:Update and challenges

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Acta Pharmaceutica Sinica B 2024年第9期14卷 3818-3833页

作者： Xiaokun zhang Ye Wu Jiayi Lin Shengxin Lu Xinchen Lu Aoyu Cheng Hongzhuan Chen weidong zhang Xin Luan Shanghai Frontiers Science Center for Chinese Medicine Chemical Biology Institute of Interdisciplinary Integrative Medicine Research and Shuguang HospitalShanghai University of Traditional Chinese MedicineShanghai 201203China Institute of Medicinal Plant Development Chinese Academy of Medical Science&Peking Union Medical CollegeBeijing 100193China School of Pharmacy Second Military Medical UniversityShanghai 200433China Department of Pharmacology School of PharmacyFudan UniversityShanghai 201203China

Immunotherapies hold immense potential for achieving durable potency and long-term survival opportunities in cancer *** vital biological mediators,peptides with high tissue penetration and superior selectivity offer significant promise for enhancing cancer immunotherapies(CITs).However,physicochemical peptide features such as conformation and stability pose challenges to their on-target *** review provides a comprehensive overview of recent advancements in therapeutic peptides targeting key steps of the cancer-immunity cycle(CIC),including tumor antigen presentation,immune cell regulation,and immune checkpoint *** attention is given to the opportunities and challenges associated with these peptides in boosting CIC within the context of clinical ***,possible future developments in this field are also discussed to provide insights into emerging CITs with robust efficacy and safety profiles.

关键词： Cancer-immunity cycle Oncolytic peptide Peptide neoantigen vaccine Peptide mimotope Immune checkpoint blockade Cancer immunotherapy Synthetic long peptide vaccine Peptide-major histocompatibility complex

Retention of harvest residues promotes the accumulation of topsoil organic carbon by increasing particulate organic carbon in a Chinese fir plantation

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Forest Ecosystems 2024年第5期11卷 720-727页

作者： Jiamin Yang Ke Huang Xin Guan weidong zhang Renshan Li Longchi Chen Silong Wang Qingpeng Yang Huitong Experimental Station of Forest Ecology CAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyShenyang110016China Huitong National Research Station of Forest Ecosystem Hunan Key Laboratory for Structure and Ecosystem Service of Subtropical ForestHuaihua418307China Life Science Department Luoyang Normal UniversityLuoyang471934China College of Resources and Environment University of Chinese Academy of SciencesBeijing101408China

Background As commonly used harvest residue management practices in subtropical plantations,stem only harvesting(SOH)and whole tree harvesting(WTH)are expected to affect soil organic carbon(SOC)***,knowledge on how SOC and its fractions(POC:particulate organic carbon;MAOC:mineral-associated organic carbon)respond to different harvest residue managements is *** In this study,a randomized block experiment containing SOH and WTH was conducted in a Chinese fir(Cunninghamia lanceolata)*** effect of harvest residue management on SOC and its fractions in topsoil(0–10cm)and subsoil(20–40cm)was *** inputs(harvest residue retaining mass and fine root biomass)and microbial and mineral properties were also *** The responses of SOC and its fractions to different harvest residue managements varied with soil ***,SOH enhanced the content of SOC and POC in topsoil with increases of 15.9%and 29.8%,respectively,compared with ***,SOH had no significant effects on MAOC in topsoil and SOC and its fractions in *** results indicated that the increase in POC induced by the retention of harvest residue was the primary contributor to SOC accumulation,especially in *** harvest residue managements affected SOC and its fractions through different pathways in topsoil and *** plant inputs(the increase in fine root biomass induced by SOH)exerted a principal role in the SOC accumulation in topsoil,whereas mineral and microbial properties played a more important role in regulating SOC dynamics than plants inputs in *** The retention of harvest residues can promote SOC accumulation by increasing POC,and is thus suggested as an effective technology to enhance the soil carbon sink for mitigating climate change in plantation management.

关键词： Chinese fir plantation Soil organic carbon Particulate organic carbon Mineral-associated organic carbon Harvest residue management

In-situ warming does not change soil priming effect induced by glucose addition in a temperate forest

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Pedosphere 2024年第4期34卷 759-769页

作者： Xiaohan DONG Yunting FANG Dongwei LIU Xin GUAN Kai HUANG Yuqi LIU Qingkui WANG Silong WANG weidong zhang Huitong Experimental Station of Forest Ecology CAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyShenyang 110016China University of Chinese Academy of Sciences Beijing 101408China Hunan Key Laboratory for Structure and Ecosystem Service of Subtropical Forest Huitong National Research Station of Forest EcosystemHuitong 418307China Qingyuan Forest Chinese Ecosystem Research Network(CERN) National Observation and Research StationShenyang 110016China Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016(China)f Key Laboratory of Stable Isotope Techniques and ApplicationsShenyang 110016China Key Laboratory of Terrestrial Ecosystem Carbon Neutrality Shenyang 110016China

Priming effect(PE)on soil organic carbon(SOC)decomposition caused by the addition of organic carbon(C)is an important ecological process in regulating soil C ***,most priming studies are confined to laboratory trials,while the assessment of soil PE under field conditions with variable weather conditions is *** study assessed the direct effects of glucose addition and in-situ warming on the extent of PE under field conditions in a temperate *** evaluated soil PE using 13C-glucose labelling,a simple and novel technique,based on the Keeling plot *** addition significantly enhanced native SOC decomposition and induced strong ***,the effect of in-situ warming on the extent of PE was not *** study confirms the importance of PE in regulating SOC turnover under field conditions.

关键词： lue lblling tchnquegbal wamingrmingt hppidfaty ai solganmattermineralisatn oezme respiration

一种基于EGK-均值聚类和PCA的海流发电机叶片冲击故障检测方法

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太阳能学报 2024年第3期45卷 201-209页

作者：谢涛张卫东张义博上海交通大学电子信息与电气工程学院上海200240

海流发电机受海流流速变化、随机湍流的影响呈现多变工况,想要准确检测出叶片冲击故障是一项巨大挑战。基于此,提出一种基于包络几何特征聚类(EGK-均值聚类)的方法用于划分变工况下产生的定子电流信号,在不同子工况下建立故障检测模型... 详细信息

海流发电机受海流流速变化、随机湍流的影响呈现多变工况,想要准确检测出叶片冲击故障是一项巨大挑战。基于此,提出一种基于包络几何特征聚类(EGK-均值聚类)的方法用于划分变工况下产生的定子电流信号,在不同子工况下建立故障检测模型。首先,根据样本矩阵构建包络几何特征矩阵,利用几何特征矩阵确定初始聚类中心进行聚类;然后,基于各工况下的包络数据分别进行主元分析以降低数据维度;最后,T^(2)和SPE统计量被计算用于实时冲击故障检测。一台海流发电机样机及配套循环水槽被搭建验证本文所提方法。实验结果表明本文所提方法在变工况下针对海流发电机叶片冲击故障有着显著的识别能力和检测精度。

关键词：海洋能海洋工程信号处理聚类算法故障检测主成分分析

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基于仿生学的纺织全产业链设计与应用

针织工业 2024年第1期 25-30页

作者：黄旭张炜栋江苏工程职业技术学院纺织服装学院江苏南通226007 江苏省先进纺织工程技术中心江苏南通226007

仿生学是对在大自然中发现的生物方法、系统和良好设计的提取和应用,仿生学或仿生方法被认为是最有前途的领域之一。生物仿生可以用于纺织产业链的所有环节,从纤维、织造、染整到服装设计,仿生学在纺织领域全面开花。仿生创新是系统研... 详细信息

仿生学是对在大自然中发现的生物方法、系统和良好设计的提取和应用,仿生学或仿生方法被认为是最有前途的领域之一。生物仿生可以用于纺织产业链的所有环节,从纤维、织造、染整到服装设计,仿生学在纺织领域全面开花。仿生创新是系统研究的产物,到目前为止,商业化的仿生纺织技术还不多;从纤维仿生、面料仿生、色彩仿生、设计仿生和低能耗生产5个方面介绍近年来的成果,分析各方面不足,并对未来进行展望。可以看出,纺织仿生领域前期的研究重点在通过组织结构设计仿生实现面料功能性,随着微纳米尺度科技和可穿戴技术的发展,更多研究集中在材料仿生领域以及仿生学和智能纺织品的结合。在可预见的未来,服装将真正成为人类的第二皮肤。

关键词：纺织产业链材料仿生结构仿生微纳米尺度低能耗生产

黑果枸杞花色苷染色羊毛织物的热力学和动力学分析

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毛纺科技 2024年第3期52卷 69-74页

作者：黄旭张炜栋江苏工程职业技术学院纺织服装学院江苏南通226000

为了实现黑果枸杞花色苷对羊毛织物的染色和功能性整理,分别使用80%乙醇/水混合溶液和蒸馏水提取黑果枸杞中的花色苷,并对2种提取液进行傅里叶红外光谱表征。用提取液对羊毛织物进行染色,并通过吸附反应模型研究黑果枸杞花色苷对羊毛织... 详细信息

为了实现黑果枸杞花色苷对羊毛织物的染色和功能性整理,分别使用80%乙醇/水混合溶液和蒸馏水提取黑果枸杞中的花色苷,并对2种提取液进行傅里叶红外光谱表征。用提取液对羊毛织物进行染色,并通过吸附反应模型研究黑果枸杞花色苷对羊毛织物的吸附机制。实验结果表明:黑果枸杞提取液中的主要化学成分是花色苷类化合物,不同溶剂提取的花色苷结构存在微小差别。吸附热力学和动力学的研究结果发现,黑果枸杞花色苷对羊毛织物的染色过程符合Langmuir和Freundlich等温吸附模型以及准二级动力学模型。

关键词：黑果枸杞天然染料羊毛织物动力学热力学

磁性表面分子印迹聚合物的制备及对梓醇的选择性吸附

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分析试验室 2024年第3期43卷 394-401页

作者：秦兵张伟东李淑贤佳木斯大学药学院佳木斯154000 吉林大学药学院长春130000

以Fe_(3)O_(4)@SiO_(2)磁性复合材料为载体,梓醇为模板分子,采用沉淀聚合法合成了新型磁性表面分子印迹聚合物。优化了吸附条件,通过静态与动态吸附实验,考察了新型复合材料的吸附性能。结果表明,该材料对梓醇的最大吸附量为69.07μg/mg... 详细信息

以Fe_(3)O_(4)@SiO_(2)磁性复合材料为载体,梓醇为模板分子,采用沉淀聚合法合成了新型磁性表面分子印迹聚合物。优化了吸附条件,通过静态与动态吸附实验,考察了新型复合材料的吸附性能。结果表明,该材料对梓醇的最大吸附量为69.07μg/mg,印迹因子为1.97,对梓醇有优良的特异性识别能力。重复使用6次后,回收率仍在85%以上,重复利用性良好。基于此,结合磁固相萃取法,建立了应用于地黄中梓醇富集和检测的高效液相色谱法,梓醇回收率为89.5%~96.8%,相对标准偏差(RSD)≤2.0%,线性范围为0.1~1.15 mg/mL,线性相关系数R^(2)>0.9998,检出限(LOD)为5.4 ng/mL。该新型磁性复合材料为天然产物中活性成分的富集和分析提供了一种新的预处理策略。

关键词：磁性表面分子印迹聚合物梓醇 HPLC 磁性材料

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基于羟基丙酮的还原硫化黑环保染色工艺探讨

针织工业 2024年第2期 40-43页

作者：黄旭张炜栋江苏工程职业技术学院江苏南通226007

首先采用阳离子改性技术对棉纱进行改性,在棉纤维素上成功引入季铵基,通过红外光谱、X射线衍射对其表面元素与结晶性能进行表征。其次,采用1,3-二羟基丙酮替代硫化钠,作为硫化黑染料的还原剂,实现了硫化黑的环保染色,通过正交试验优化... 详细信息

首先采用阳离子改性技术对棉纱进行改性,在棉纤维素上成功引入季铵基,通过红外光谱、X射线衍射对其表面元素与结晶性能进行表征。其次,采用1,3-二羟基丙酮替代硫化钠,作为硫化黑染料的还原剂,实现了硫化黑的环保染色,通过正交试验优化染料的还原工艺。结果表明:棉织物在阳离子化改性过程中,棉纤维结晶度由62.1%降低至48.9%;改性棉纤维上染40 g/L硫化黑与未改性棉纤维上染60 g/L硫化黑K/S值一致,阳离子化提高了纱线的上染率,最佳还原工艺为硫化黑与1,3-二羟基丙酮质量比为1∶1,烧碱4 g/L,温度80℃;利用1,3-二羟基丙酮还原硫化黑对阳离子型棉纱进行染色,染色K/S值最高达到38.29,耐摩擦色牢度得到明显提高。

关键词：棉纱阳离子化硫化黑 1,3-二羟基丙酮 K/S值