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Carbon steel anticorrosion performance and mechanism of sodium lignosulfonate

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Rare Metals 2024年第1期43卷 356-365页

作者： bo-Kai liao Rui-Xuan Quan Ping-Xian Feng Huan Wang Wei Wang Li Niu School of Chemistry and Chemical Engineering Guangzhou Key Laboratory of Sensing Materials and DevicesJoint Institute of Guangzhou University and Institute of Corrosion Science and TechnologyGuangzhou UniversityGuangzhou 510006China

Lignin is a typical biological macromolecule with a three-dimensional network structure and abundant functional groups. It has excellent ionic complexation ability and amphiphilic molecular structure *** this study, the carbon steel anticorrosion performance of sodium lignosulfonate(SLS) in an acid solution was evaluated using the weight loss method, electrochemical measurements, scanning vibration electrode technique(SVET), and surface characterization methods. SLS exhibited excellent corrosion inhibition efficiency for Q235carbon steel in 1 mol·L^(-1) HCl, reaching a maximum value of 98%. A low SLS concentration of 20 mg·L^(-1) resulted in the maximum corrosion inhibition efficiency, which remained nearly constant at higher SLS *** SVET test demonstrated that the formation of an SLS adsorption film can impede corrosion. This study confirms the significance of the application of green biomass resources in the field of metal corrosion protection and green functional materials.

关键词： Lignin Sodium lignosulfonate Corrosion inhibitor Carbon Steel

Two-dimensional bifunctional electrocatalyst(Mo-NiFe-LDH)with multilevel structure for highly efficient overall water splitting

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Rare Metals 2024年第6期43卷 2613-2622页

作者： Bao-Jie Zhang Bin Chang Shi-Peng Qiu Gang Zhao Xiao Wang Xi-Jin Xu Lan Mu Wen-bo liao Xiao-Jing Dong School of Physics and Technology University of JinanJinan 250000China KAUST Catalysis Center(KCC) King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdomof SaudiArabia School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China School of Physics and Physical Engineering Qufu Normal UniversityQufu273100China

To effectively address energy challenges,it is crucial to explore efficient and stable bifunctional nonprecious metal *** this study,a Mo-doped nickeliron layered double hydroxide with flower-cluster architecture was successfully prepared by a one-step hydrothermal method,which demonstrated a good water splitting *** an appropriate amount of Mo doping,some lattice distortions in the material provided reactive sites for the adsorption and conversion of intermediates,thus optimising the charge distribution of the ***,the multidimensional void structures formed after doping had a larger specific surface area and accelerated the penetration of the electrolyte,which significantly improved the activity of the catalyst in alkaline *** 10 mA·cm^(-2),the hydrogen and oxygen evolution overpotentials of Mo-doped nickel-iron double hydroxides(Mo-NiFe LDH/NF-0.2)were 167 and 220 mV,respectively,with an excellent durability up to 24 *** the Mo-NiFe LDH/NF-0,2 catalyst was used as the cathode and anode of an electrolytic cell,the catalyst achieved a current density of 10 mA·cm^(-2)at an applied voltage of 1.643 *** study provides a novel approach for designing excellent bifunctional electrocatalysts containing nonprecious metals.

关键词： Bifunctional electrocatalysts 2D multilevel structure Overall water splitting Mo-doped Ni-Fe LDH

关于大食物安全战略背景下我国油料保障底线目标及对策的商榷

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中国油料作物学报 2024年第1期46卷 1-6页

作者：廖伯寿中国农业科学院油料作物研究所湖北武汉430062

树立大食物观和实施大食物安全战略是我国新时代推动食物来源更多元、数量更充足、品质更营养、产业更高效、环境更友好、调控更自主、消费更健康、治理更有力的迫切需要。1978年我国实行改革开放以来,包括油料在内的主要农产品生产、... 详细信息

树立大食物观和实施大食物安全战略是我国新时代推动食物来源更多元、数量更充足、品质更营养、产业更高效、环境更友好、调控更自主、消费更健康、治理更有力的迫切需要。1978年我国实行改革开放以来,包括油料在内的主要农产品生产、贸易、消费发生了历史性巨变,人民生活水平不断提高,但也存在生产和消费结构失衡导致的慢性疾病增多、环境压力加大、安全风险升高等不容忽视的突出问题,其中油料和食用植物油近十多年处于既自给不足又消费超量的两难局面。基于我国自然资源禀赋和经济社会发展的实际,保障未来油料供给安全必须坚持“一靠油菜、二靠花生、多油并举、健康消费”的发展思路,通过综合施策在十年左右将国产植物油产量稳定提高到2000万吨,以确保居民食用油基本消费需求的安全自主供给底线,并不断改善油料产品质量、提高产业竞争力和促进脂质产品的科学健康消费。

关键词：食物安全油料油脂科学消费基本保障底线发展对策

Distinct immune escape and microenvironment between RG-like and pri-OPC-like glioma revealed by single-cell RNA-seq analysis

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Frontiers of Medicine 2024年第1期18卷 147-168页

作者： Weiwei Xian Mohammad Asad Shuai Wu Zhixin Bai Fengjiao Li Junfeng Lu Gaoyu Zu Erin Brintnell Hong Chen Ying Mao Guomin Zhou bo liao Jinsong Wu Edwin Wang Linya You Department of Human Anatomy&Histoembryology School of Basic Medical SciencesFudan UniversityShanghai200032China Cumming School of Medicine University of CalgaryCalgaryAlbertaT2N 4N1Canada Glioma Surgery Division Department of NeurosurgeryHuashan HospitalFudan UniversityShanghai200040China Department of Pathology Huashan HospitalFudan UniversityShanghai200040China Department of Neurosurgery Huashan HospitalFudan UniversityShanghai200040China Shanghai Key Laboratory of Medical Imaging Computing and Computer Assisted Intervention Fudan UniversityShanghai200040China School of Mathematics and Statistics Hainan Normal UniversityHaikou570100China

The association of neurogenesis and gliogenesis with glioma remains *** conducting single-cell RNA-seq analyses on 26 gliomas,we reported their classification into primitive oligodendrocyte precursor cell(pri-OPC)-like and radial glia(RG)-like tumors and validated it in a public cohort and TCGA *** RG-like tumors exhibited wild-type isocitrate dehydrogenase and tended to carry EGFR mutations,and the pri-OPC-like ones were prone to carrying TP53 *** subclones only in pri-OPC-like tumors showed substantially down-regulated MHC-I genes,suggesting their distinct immune evasion ***,the two subgroups appeared to extensively modulate glioma-infiltrating lymphocytes in distinct *** specific genes not expressed in normal immune cells were found in glioma-infiltrating *** example,glial/glioma stem cell markers OLIG1/PTPRZ1 and B cell-specific receptors IGLC2/IGKC were expressed in pri-OPC-like and RG-like glioma-infiltrating lymphocytes,*** expression was positively correlated with those of immune checkpoint genes(e.g.,LGALS33)and poor survivals as validated by the increased expression of LGALS3 upon IGKC overexpression in Jurkat *** finding indicated a potential inhibitory role in tumor-infiltrating lymphocytes and could provide a new way of cancer immune evasion.

关键词： single-cell RNA-seq glioma radial glia primitive oligodendrocyte precursor cell immune escape

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青花陶瓷山水画的艺术特色与形象表现

景德镇陶瓷 2024年第1期52卷 106-108页

作者：廖波不详

本文从青花陶瓷山水画的历史起源、发展过程以及艺术特色等方面进行研究。揭示了青花陶瓷山水画的兴起与融合发展关系,包括绘画风格与形象表现、与传统绘画的相互影响及审美内涵。

关键词：青花瓷山水画艺术特色形象表现

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AICAR-based exercise mimetic alleviates aging-induced memory impairment through activating AMPK and improving mitochondrial quality control

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Food Science and Human Wellness 2024年

作者： bo liao Yuan-Yuan Qin Shan-Yao Pan Gui-Ping Wang Zhi Jiang Bin Li Yao Wang Yu-Long Wang Ming-Chao Zhou Yong Zhang Gang Liu Zheng-Hong Qin Xue-Feng Xi Li Luo Department of Pharmacology and Laboratory of Aging and Nervous Diseases (SZS0703) Jiangsu Key Laboratory of Translational Research and Therapy for NeuroPsycho-Diseases， Soochow University School of Pharmaceutical Science College of Physical Education， Henan University School of Physical Education and Sports Science， Soochow University Department of Pharmacy， Suzhou Hospital of Traditional Chinese Medicine Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine Laboratory Animal Center， Medical College of Soochow University Center Lab of Ninth People's Hospital of Suzhou Department of Rehabilitation Medicine， Nan‘ao People's Hospital of Dapeng New District Rehabilitation Department， The First Affiliated Hospital of Shenzhen University， Shenzhen Second People's Hospital Tianjin Key Lab of Exercise Physiology and Sports Medicine， Tianjin University of Sport Department of Rehabilitation Medicine， Nanfang Hospital， Southern Medical University

Growing evidence suggests that exercise can provide neuroprotection by improving mitochondrial quality control (MQC) on the aged brain. Adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) signaling responsiveness declines with aging. However， whether AMPK plays a role in the exercise-mediated improvement of memory and MQC in the aged hippocampus remains to be established. AICAR (5-Aminoimidazole 4-carboxamide ribonucleoside)， a pharmacological agonist of AMPK， has been proposed to be an exercise mimetic recently. However， it has not been clarified whether AICAR could mimic the effects of exercise on the aged hippocampus through improvement of MQC. In this study， AICAR (AMPK agonist) and Compound C (AMPK inhibitor) were used to investigate if AMPK plays a key role in exercise-induced improvement of MQC and if AICAR could act as an exercise mimetic through improvement of MQC in aged hippocampus. both exercise and AICAR improved the memory of aged mice and increased AMPK phosphorylation in the aged hippocampus. Exercise， but not AICAR， improved mitochondrial respiratory function in the aged hippocampus and increased the Microtubule associated protein 1 light chain 3 (LC3) II/LC3 I ratio and the protein expression of LC3 II and Autophagy Related Protein 7 (ATG7) in the lysate of whole hippocampal tissue. both exercise and AICAR increased the ratio of LC3 II/LC3 I and the protein expression of LC3 II in the mitochondrial fractions of the hippocampus. Regarding mitochondrial dynamics， neither exercise training nor AICAR changed the protein level of Mitofusin2 (Mfn2). Exercise， but not AICAR， increased the protein level of Dynamin-related protein 1 (Drp1). Furthermore， both exercise training and AICAR increased the protein level of peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α)， a modulator of mitochondrial biogenesis. Compound C abolished the exercise-induced effects on memory in aged mice (Fig. 1)， AMPK phosphorylation， autophagy， mitop

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海域天然气水合物完井液体系构建及性能评价

钻井液与完井液 2024年第1期41卷 133-140页

作者：冯明廖波王金堂曾先进中海油海南能源有限公司海口570100 中海石油(中国)有限公司海南分公司海口570100 中国石油大学(华东)石油工程学院山东青岛266580

砾石充填防砂方式是解决水合物储层开采出砂的有效手段,但与之配套的完井液体系面临水合物二次生成和砾石充填效率不高等技术难题。结合南海常规油气藏开发完井经验,考虑水合物储层的特殊性,构建了不同水合物完井液体系,评价了体系性能... 详细信息

砾石充填防砂方式是解决水合物储层开采出砂的有效手段,但与之配套的完井液体系面临水合物二次生成和砾石充填效率不高等技术难题。结合南海常规油气藏开发完井经验,考虑水合物储层的特殊性,构建了不同水合物完井液体系,评价了体系性能。研究结果表明,常用的热力学抑制剂乙二醇和盐类需要比较高的添加量才能达到比较好的抑制效果,但较高的完井液密度无法满足现场施工要求,需要替代使用动力学抑制剂;使用自行研发的SYZ-2动力学抑制剂配制的完井液体系能够满足现场各项指标要求,取得比较好的完井效果。优选出完井液配方为:盐水+2.5%PF-HCS+2.0%PF-CA101HT+6.5%NaCl+1.0%SYZ-2。

关键词：天然气水合物完井砾石充填抑制剂

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深水天然气水合物储层钻井多物理场耦合数值分析

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中国造船 2024年第3期65卷 175-186页

作者：赵珂刘磊廖波王金堂陈龙桥孙金声中国石油大学(华东)石油工程学院青岛266580 中国石油集团工程技术研究院有限公司北京102206 中国石油集团海洋工程有限公司北京100028

在深水天然气水合物储层钻井过程中,钻井液易侵入储层导致井筒内温度和压力变化,引起水合物分解,造成井壁失稳。考虑钻井液作用下的水合物解离和井筒-储层传热传质,建立了深水天然气水合物储层多孔介质非稳态传热多场全耦合模型,并进行... 详细信息

在深水天然气水合物储层钻井过程中,钻井液易侵入储层导致井筒内温度和压力变化,引起水合物分解,造成井壁失稳。考虑钻井液作用下的水合物解离和井筒-储层传热传质,建立了深水天然气水合物储层多孔介质非稳态传热多场全耦合模型,并进行数值分析。结果表明,当钻井液侵入后,水合物储层的温度和压力呈现不同程度的上升,沿地层方向的温度变化率为0.618 K/m,压力变化率为0.39 MPa/m。水合物饱和度沿地层向下逐渐降低,平均变化率为0.06m^(-1)。水合物分解导致井筒周围力学强度下降,等效塑性应变增加,20h后井筒周围塑性应变达到90%,井筒失稳风险增加。因此,在水合物储层钻井过程中,应降低钻井液温度,或进行井筒-储层传热和传质屏蔽,以实现安全高效钻井。

关键词：天然气水合物钻井液侵入井筒-储层耦合多物理场耦合井壁稳定

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探讨转子集电环温度过高的原因及改进方案

水电与新能源 2024年第5期38卷 65-67页

作者：廖波唐云武国能大渡河检修安装有限公司四川乐山614000

发电机在运行过程中,集电环和碳刷经常出现过热,引发火花现象,造成碳刷烧损,还可能迅速磨损集电环,甚至还有可能造成集电环极间短路,引起集电环环火事故,导致机组非计划停运等严重后果。针对某650 MW水轮发电机组转子集电环在运行过程... 详细信息

发电机在运行过程中,集电环和碳刷经常出现过热,引发火花现象,造成碳刷烧损,还可能迅速磨损集电环,甚至还有可能造成集电环极间短路,引起集电环环火事故,导致机组非计划停运等严重后果。针对某650 MW水轮发电机组转子集电环在运行过程中出现温度过高的问题,从结构原理、电流传导特性进行了详细分析探讨,对集电环、碳刷、碳刷架、碳粉回收装置四个方面提出了改进建议,并最终提出了有助于解决该问题的改进方案。

关键词：集电环火花温度过高改进方案