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A Radiative-Cooling Hierarchical Aligned Porous Poly(vinylidene fluoride)Film by Freeze-Thaw-Promoted Nonsolvent-Induced Phase Separation

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Chinese Journal of Polymer Science 2024年第7期42卷 976-983,I0009页

作者： yiting Zhang Jiahui Sun Yufeng Wang Yunchen Wu Chun Huang Chao Zhang Tianxi liu Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material EngineeringJiangnan UniversityWuxi214122China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China

Passive daytime radiative cooling(PDRC)is an innovative and sustainable cooling technology that holds immense potential for addressing the energy crisis.Despite the numerous reports on radiative coolers,the design of a straightforward,efficient,and readily producible system remains a challenge.Herein,we present the development of a hierarchical aligned porous poly(vinylidene fluoride)(HAP-PVDF)film through a freeze-thaw-promoted nonsolvent-induced phase separation strategy.This film features oriented microporous arrays in conjunction with random nanopores,enabling efficient radiative cooling performance under direct sunlight conditions.The incorporation of both micro-and nano-pores in the HAP-PVDF film results in a remarkable solar reflectance of 97%and a sufficiently high infrared thermal emissivity of 96%,facilitating sub-environmental cooling at 18.3℃ on sunny days and 13.1℃ on cloudy days.Additionally,the HAP-PVDF film also exhibits exceptional flexibility and hydrophobicity.Theoretical calculations further confirm a radiative cooling power of 94.8 W·m^(-2)under a solar intensity of 1000W·m^(-2),demonstrating a performance comparable to the majority of reported radiative coolers.

关键词： Daytime radiative cooling Hierarchical porosity PVDF porous film Thermal insulation Nonsolvent-induced phase separation

Leaf Morphology Genes SRL1 and RENL1 Co-Regulate Cellulose Synthesis and Affect Rice Drought Tolerance

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Rice science 2024年第1期31卷 103-117,I0020-I0022页

作者： liu Dan ZHAO Huibo WANG Zi’an XU Jing liu yiting WANG Jiajia CHEN Minmin liu Xiong ZHANG Zhihai CEN Jiangsu ZHU Li HU Jiang REN Deyong GAO Zhenyu DONG Guojun ZHANG Qiang SHEN Lan LI Qing QIAN Qian HU Songping ZHANG Guangheng State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China Research Center of Plant Functional Genes and Tissue Culture Technology College of Bioscience and BioengineeringJiangxi Agricultural UniversityNanchang 330045China Qian Qian Academician Workstation National Nanfan Research Institute(Sanya)Chinese Academy of Agricultural SciencesSanya 572024China

The morphological development of rice(Oryza sativa L.)leaves is closely related to plant architecture,physiological activities,and resistance.However,it is unclear whether there is a co-regulatory relationship between the morphological development of leaves and adaptation to drought environment.In this study,a drought-sensitive,roll-enhanced,and narrow-leaf mutant(renl1)was induced from a semi-rolled leaf mutant(srl1)by ethyl methane sulfonate(EMS),which was obtained from Nipponbare(NPB)through EMS.Map-based cloning and functional validation showed that RENL1 encodes a cellulose synthase,allelic to NRL1/OsCLSD4.The RENL1 mutation resulted in reduced vascular bundles,vesicular cells,cellulose,and hemicellulose contents in cell walls,diminishing the water-holding capacity of leaves.In addition,the root system of the renl1 mutant was poorly developed and its ability to scavenge reactive oxygen species(ROS)was decreased,leading to an increase in ROS after drought stress.Meanwhile,genetic results showed that RENL1 and SRL1 synergistically regulated cell wall components.Our results revealed a theoretical basis for further elucidating the molecular regulation mechanism of cellulose on rice drought tolerance,and provided a new genetic resource for enhancing the synergistic regulation network of plant type and stress resistance,thereby realizing simultaneous improvement of multiple traits in rice.

关键词： cellulose cell wall drought tolerance leaf morphology rice

Mechanism of micro-wetting of highly hydrophobic coal dust in underground mining and new wetting agent development

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International Journal of Mining Science and Technology 2023年第1期33卷 31-46页

作者： Mingzhong Gao Hongmei Li Yun Zhao yiting liu Weiqi Zhou Luming Li Jing Xie Jie Deng State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Deep Earth Sciences Geothermal Energy Exploitation and UtilizationInstitute of Deep Earth Sciences and Green EnergyCollege of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China College of Food and Bioengineering Chengdu UniversityChengdu 610106China School of Mechanical Engineering Chengdu UniversityChengdu 610106China

The internal mechanism of the high hydrophobicity of the coal samples from the Pingdingshan mining area was studied through industrial,element,and surface functional group analysis.Laboratory testing and molecular dynamics simulations were employed to study the impact of three types of surfactants on the surface adsorption properties and wettability of highly hydrophobic bituminous coal.The results show that the surface of highly hydrophobic bituminous coal is compact,rich in inorganic minerals,and poorly wettable and that coal molecules are dominated by hydrophobic functional groups of aromatic rings and aliphatic structures.The wetting performance of surfactants as the intermediate carrier to connect coal and water molecules is largely determined by the interaction force between surfactants and coal(Fs-c)and the interaction force between surfactants and water(Fs-w),which effectively improve the wettability of modified coal dust via modifying its surface electrical properties and surface energy.A new type of wetting agent with a dust removal rate of 89%has been developed through discovery of a compound wetting agent solution with optimal wetting and settling performance.This paper provides theoretical and technical support for removing highly hydrophobic bituminous coal dust in underground mining.

关键词： Dust removal technology Bituminous coal dust New dust suppressant Mine safety Molecular dynamics

New ex vivo demyelination/remyelination models to defeat multiple sclerosis and neuromyelitis optica

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Neural Regeneration Research 2019年第10期14卷 1715-1716页

作者： yiting liu Department of Neurology School of Medicine University of Colorado

Multiple sclerosis (MS) and neuromyelitis optica (NMO) are inflammatory diseases of the central nervous system (CNS) resulting in CNS inflammation, infiltration of peripheral immune cells, loss of myelin and oligodendrocytes, interruption of axonal communication, and neurologic deficits. Following oligodendrocyte injury, newly generated myelinating oligodendrocytes derived from oligodendrocyte progenitors (OPCs) may produce new myelin sheaths around denuded axons (remyelination) restoring neuronal function (Verden and Macklin, 2016). While remyelination is apparent in MS lesions, the process is often inefficient;in NMO, remyelination is even more limited.

关键词： Multiple sclerosis(MS) inflammatory diseases remyelination is even more limited

From adaption to death: endoplasmic reticulum stress as a novel target of selective neurodegeneration?

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Neural Regeneration Research 2015年第9期10卷 1397-1398页

作者： yiting liu James R.Connor Department of Neurology University of Colorado at Denver Anschutz Medical Campus Department of Neurosurgery Pennsylvania State University M.S. Hershey Medical Center 500 University Drive

Neurodegenerative disease is a condition in which subpopulations of neuronal cells of the brain and spinal cord are selectively lost. A common event in many neurodegenerative diseases, such as Parkinson＇s disease （PD）, Alzheimer＇s disease （AD）, amyotrophic lateral sclerosis （ALS）, multiple sclerosis and prion diseases, is the increased level of endoplasmic reticulum （ER） stress caused by accumulation and deposits of inclusion bodies that contain abnormal aggregated proteins. However, the exact contributions to and causal effects of ER stress in neuron degeneration are not clear （Lindholm et al., 2006）.

关键词： From adaption to death ER

Aquaporin 9 is involved in CRC metastasis through DVL2-dependent Wnt/β-catenin signaling activation

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Gastroenterology Report 2023年第1期11卷 350-364页

作者： yiting liu Qianling Gao Xingzhi Feng Guanxing Chen Xuefei Jiang Daici Chen Zihuan Yang Guangdong Institute of Gastroenterology Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor DiseasesGuangzhouGuangdongP.R.China Department of General Surgery(Colorectal Surgery) The Sixth Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdongP.R.China Artificial Intelligence Medical Research Center School of Intelligent Systems EngineeringSun Yat-sen UniversityShenzhenGuangdongP.R.China Department of Clinical Laboratory The Sixth Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdongP.R.China

Background:Aquaporin 9(AQP9)is permeable to water or other small molecules,and plays an important role in various cancers.We previously found that AQP9 was related to the efficacy of chemotherapy in patients with colorectal cancer(CRC).This study aimed to identify the role and regulatory mechanism of AQP9 in CRC metastasis.Methods:The clinical significance of AQP9 was analysed by using bioinformatics and tissue microarray.Transcriptome sequencing,Dual-Luciferase Reporter Assay,Biacore,and co-immunoprecipitation were employed to demonstrate the regulatory mechanism of AQP9 in CRC.The relationship between AQP9 and CRC metastasis was verified in vitro and in vivo by using real-time cell analysis assay,high content screening,and liver metastasis models of nude mice.Results:We found that AQP9 was highly expressed in metastatic CRC.AQP9 overexpression reduced cell roundness and enhanced cell motility in CRC.We further showed that AQP9 interacted with Dishevelled 2(DVL2)via the C-terminal SVIM motif,resulting in DVL2 stabilization and the Wnt/b-catenin pathway activation.Additionally,we identified the E3 ligase neural precursor cell expressed developmentally downregulated 4-like(NEDD4L)as a modulator regulating the ubiquitination and degradation of AQP9.Conclusions:Collectively,our study revealed the important role of AQP9 in regulating DVL2 stabilization and Wnt/β-catenin signaling to promote CRC metastasis.Targeting the NEDD4L–AQP9–DVL2 axis might have therapeutic usefulness in metastatic CRC treatment.

关键词： aquaporin 9 colorectal cancer metastasis Dishevelled 2 Wnt/b-catenin signaling

数字化转型对审计费用的影响研究——基于企业商誉的中介效应

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财经理论与实践 2024年第3期45卷 93-99页

作者：钟希余刘艺婷沈泽凯湘潭大学商学院湖南湘潭411105 北京科技大学机械工程学院北京100083

依据2010—2022年中国A股创业板上市公司数据,运用多元线性回归模型探究数字化转型对审计费用的影响。结果显示,企业数字化转型进程与审计费用的增加呈正相关关系,这一关系在重污染行业尤为显著。进一步分析表明,商誉在企业数字化转型... 详细信息

依据2010—2022年中国A股创业板上市公司数据,运用多元线性回归模型探究数字化转型对审计费用的影响。结果显示,企业数字化转型进程与审计费用的增加呈正相关关系,这一关系在重污染行业尤为显著。进一步分析表明,商誉在企业数字化转型对审计费用的提升过程中具有中介效应。鉴于此,企业应加强精细化审计成本预见性与规划性,全面考虑数字化投资与审计成本之间的平衡,适时调整审计策略与资源配置,监管层需适时调整审计行业规则应对数字化转型。

关键词：数字化转型审计费用中介效应多元线性回归

南方地区遗址脆弱动物遗存提取与相关问题探讨

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江汉考古 2024年第1期 119-122页

作者：李志鹏刘一婷中国社会科学院考古研究所北京100101 武汉大学历史学院湖北武汉430072 武汉大学长江文明考古研究院湖北武汉430072

由于酸性土壤等埋藏环境,南方地区的动物骨骼往往保存不佳,给后续鉴定带来巨大挑战,也极大限制了南方地区的动物考古工作和研究。对此,我们初步提出“现场介入、清理四至、加固标本、托板(套箱)提取”的脆弱动物遗存提取流程,并加强相... 详细信息

由于酸性土壤等埋藏环境,南方地区的动物骨骼往往保存不佳,给后续鉴定带来巨大挑战,也极大限制了南方地区的动物考古工作和研究。对此,我们初步提出“现场介入、清理四至、加固标本、托板(套箱)提取”的脆弱动物遗存提取流程,并加强相关鉴定特征与方法的积累与总结,以达到框架性地复原动物资源利用状况等学术目的,为后续科技考古检测、多学科考古提供线索与条件。

关键词：南方地区遗址动物考古脆弱动物遗存埋藏提取鉴定

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金冠豆角籽粒淀粉组成及性质研究

食品工业科技 2024年第7期45卷 59-67页

作者：宋永贾璐泽张一婷刘佳莉刘大军孙庆申黑龙江大学生命科学学院农业微生物技术教育部工程研究中心黑龙江省寒区植物基因与生物发酵重点实验室黑龙江省普通高校分子生物学重点实验室黑龙江省普通高校微生物重点实验室黑龙江哈尔滨150080 河北环境工程学院河北省农业生态安全重点实验室河北秦皇岛066102 黑龙江大学现代农业与生态环境学院黑龙江哈尔滨150080

为了明确金冠豆角淀粉的基本性质,本文以提取盐溶蛋白后剩余的金冠豆角籽粒豆渣为原料,采用水提法提取淀粉,观察淀粉颗粒形态,测定其组成、粒径、理化性质及体外抗消化特性。结果表明,金冠豆角籽粒淀粉中直链淀粉和支链淀粉的含量分别为... 详细信息

为了明确金冠豆角淀粉的基本性质,本文以提取盐溶蛋白后剩余的金冠豆角籽粒豆渣为原料,采用水提法提取淀粉,观察淀粉颗粒形态,测定其组成、粒径、理化性质及体外抗消化特性。结果表明,金冠豆角籽粒淀粉中直链淀粉和支链淀粉的含量分别为47.39%和52.07%,淀粉的颗粒形态与豌豆淀粉类似,呈卵圆形或球型,颗粒表面光滑完整,粒径为75.10μm。金冠豆角籽粒淀粉的峰值粘度(212.20 RVU)、衰减值(68.50 RVU)较低,但回生值(96.80 RVU)高于玉米淀粉;金冠豆角籽粒淀粉糊化的起始温度(T_(0))、峰值温度(T_(p))显著高于豌豆淀粉(P<0.05)。金冠豆角籽粒淀粉的凝沉值在90 min时接近80%,凝沉速度显著高于玉米淀粉,透光率介于豌豆淀粉和玉米淀粉之间,持水性(WHC)和持油性(OHC)值分别为1.08和1.00 g/g,凝胶硬度小,属于易凝沉淀粉,其抗性淀粉(RS)含量为68.43%,高于玉米淀粉和豌豆淀粉(P<0.05),具有良好的抗消化特性。

关键词：金冠豆角籽粒淀粉理化性质抗消化特性