检索结果-南通市图书馆

Viscosity and structure of CaO-BaO-SiO_(2)-Al_(2)O_(3)-based mold slags for continuous casting of high titanium steel with different Tio2 absorption

引用

Journal of Iron and Steel Research International 2024年第8期31卷 1936-1946页

作者： ya-tao cui xue-you Wang xu-bin Zhang Qiang-qiang Wang Sheng-ping He College of Materials Science and Engineering Chongqing UniversityChongqing 400044China

The effect of TiO_(2) absorption into two different CaO-BaO-SiO_(2)-Al_(2)O_(3)-based mold slags from the steel plant on the viscosity,melting performance and microstructure of slags was investigated through the measurement of the viscosity-temperature relationship,melting temperature and Raman *** parameter of the number of non-bridging oxygen per tetrahedrally-coordinated atom(NBO/T)was also calculated to explain the microstructure variation of molten slags with different TiO_(2) *** variation of the actual slag consumption and the depth of the liquid slag in mold was explained through the comparison of the viscosity and the melting temperature of two different *** viscosity of mold slags(basicity=0.6)decreased from 1.1 to 0.68 Pa s with the increase in the Ti0_(2) absorption from 0 to 10%,while that of slags(basicity=0.7)decreased from 0.76 to 0.56 Pa s with the Ti0_(2) absorption from 0 to 6%.The activation energy of both two groups of slags had the tendency to decrease with the increasing TiO_(2) *** network structure of both two groups of slags measured by the Raman spectra showed that the fraction of complex structure units(Q^(1),Q^(2),Q^(3) and A1-O-Al)decreased and simple structure units(Al-O-and Q^(0))increased with the increase in TiO_(2) ***/T also increased with the increase in the TiO2 absorption,indicating that the absorption of TiO_(2) into slags resulted in the destruction of silicate/aluminate ***,the absorption of TiO_(2) into the current CaO-BaO-SiO_(2)-Al_(2)O_(3) mold slags decreased the degree of polymerization of these slags and then led to the decrease of viscosity.

关键词： Mold slag Viscosity Melting temperature Slag consumption Liquid slag depth Structure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current and Potential Roles of Ferroptosis in Bladder Cancer

引用

Current Medical Science 2024年第1期44卷 51-63页

作者： Wen-xin AN Radheshyam Gupta Kun ZHAI ya-ru WANG Wan-hai xu yan cui Department of Urology Harbin Medical University Cancer HospitalHarbin 150081China Department of Internal Medical Oncology Harbin Medical University Cancer HospitalHarbin 150081China

Ferroptosis,a type of regulated cell death driven by iron-dependent lipid peroxidation,is mainly initiated by extramitochondrial lipid peroxidation due to the accumulation of iron-dependent reactive oxygen *** is a prevalent and primitive form of cell *** cellular metabolic processes regulate ferroptosis,including redox homeostasis,iron regulation,mitochondrial activity,amino acid metabolism,lipid metabolism,and various disease-related signaling *** plays a pivotal role in cancer therapy,particularly in the eradication of aggressive malignancies resistant to conventional *** studies have explored the connection between ferroptosis and bladder cancer,focusing on its incidence and treatment *** biomolecules and tumor-associated signaling pathways,such as p53,heat shock protein 1,nuclear receptor coactivator 4,RAS-RAF-MEK,phosphatidylinositol 3-kinase-AKT-mammalian target of rapamycin,and the Hippo-tafazzin signaling system,exert a moderating influence on ferroptosis in bladder *** inducers,including erastin,artemisinin,conjugated polymer nanoparticles,and quinazolinyl-arylurea derivatives,hold promise for enhancing the effectiveness of conventional anticancer medications in bladder cancer *** conventional therapeutic drugs and treatment methods related to ferroptosis offers a promising approach for the treatment of bladder *** this review,we analyze the research on ferroptosis to augment the efficacy of bladder cancer treatment.

关键词： ferroptosis bladder cancer ferroptosis-associated tumor signaling pathway ferroptosis inducer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

福建省贝类毒素风险预警与管控的现状与建议

引用

食品安全质量检测学报 2024年第14期15卷 284-292页

作者：许翠娅陈小红杨芳朱琳朱雨晨陈财珍黄奕雯福建省水产研究所福建省海洋生物增养殖与高值化利用重点实验室厦门361013 福建省渔业资源监测中心福州350003

贝类毒素主要由有毒赤潮藻产生,在海洋环境中分布广泛,它可通过食物链传递,对民众生命健康造成严重威胁。福建省近岸海域是我国赤潮高发海域之一,近年来在漳州、泉州等地曾发生民众食用贝类中毒事件。为保障民众健康和生命安全,维护海... 详细信息

贝类毒素主要由有毒赤潮藻产生,在海洋环境中分布广泛,它可通过食物链传递,对民众生命健康造成严重威胁。福建省近岸海域是我国赤潮高发海域之一,近年来在漳州、泉州等地曾发生民众食用贝类中毒事件。为保障民众健康和生命安全,维护海洋渔业经济健康发展,本文对福建省贝类毒素风险监测与管控、赤潮灾害预警与应急处置预案等相关政策、措施进行总结,结合近年来福建省海水贝类贝毒污染状况,对存在的主要问题进行分析,并针对性地提出健全相关法律法规、制定贝毒风险预警与应急处置预案、完善贝类毒素监测方案、严格产毒藻预警浓度、建立贝类毒素分级管控制度等对策和建议,以期为赤潮减灾、水产品质量安全管理,以及贝类毒素风险预警与管控体系的完善提供参考。

关键词：贝类毒素风险预警分级管控福建省

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multiscale method for identifying and marking the multiform fractures from visible-light rock-mass images

引用

Underground Space 2024年第3期16卷 279-300页

作者： Yongbo Pan Junzhi cui Zhenhao xu School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China The State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China Geotechnical and Structural Engineering Research Center Shandong UniversityJinan 250100China

Multiform fractures have a direct impact on the mechanical performance of rock *** accurately identify multiform fractures,the distribution patterns of grayscale and the differential features of fractures in their neighborhoods are *** on this,a multiscale processing algorithm is *** multiscale process is as *** the neighborhood of pixels,a grayscale continuous function is constructed using bilinear interpolation,the smoothing of the grayscale function is realized by Gaussian local filtering,and the grayscale gradient and Hessian matrix are calculated with high *** small-scale blocks,the pixels are classified by adaptively setting the grayscale threshold to identify potential line segments and *** the global image,potential line segments and mini-fillings are spliced together by progressing the block frontier layer-by-layer to identify and mark multiform *** accuracy of identifying multiform fractures is improved by constructing a grayscale continuous function and adaptively setting the grayscale thresholds on small-scale *** the layer-by-layer splicing algorithm is performed only on the domain of the 2-layer small-scale blocks,reducing the *** using rock mass images with different fracture types as examples,the identification results show that the proposed algorithm can accurately identify the multiform fractures,which lays the foundation for calculating the mechanical parameters of rock masses.

关键词： Visible light rock-mass images Continuous grayscale function Small-scale blocks Multiform fractures

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

链状裸甲藻所产麻痹性贝类毒素在翡翠贻贝体内的累积、转化和排出

引用

海洋与湖沼 2023年第5期54卷 1363-1372页

作者：许翠娅福建省水产研究所、福建省海洋生物增养殖与高值化利用重点实验室福建厦门361013 福建省海洋生物资源开发利用协同创新中心福建厦门361013

为研究链状裸甲藻所产麻痹性贝类毒素(paralytic shellfish toxins,PST)在翡翠贻贝体内的累积、转化和排出规律,设置试验组和对照组,采用链状裸甲藻和中肋骨条藻投喂翡翠贻贝,开展短期累积(12 h)、长期累积(10 d)和排出(28 d)试验。结... 详细信息

为研究链状裸甲藻所产麻痹性贝类毒素(paralytic shellfish toxins,PST)在翡翠贻贝体内的累积、转化和排出规律,设置试验组和对照组,采用链状裸甲藻和中肋骨条藻投喂翡翠贻贝,开展短期累积(12 h)、长期累积(10 d)和排出(28 d)试验。结果表明:翡翠贻贝具有较强的毒素累积能力,内脏团是PST累积的主要部位,PST含量与产毒藻密度呈显著正相关关系。当链状裸甲藻密度为1.0×10^(6)cells/L时,贻贝内脏团PST含量累积2 h已接近食用贝类毒素安全标准,累积8 h超标。当产毒藻密度为5.0×10^(5)cells/L时,贻贝内脏团PST含量累积2 d超标,累积8 d达到峰值(3590.4±545.7)μg/kg。贻贝对PST具有累积快排出慢的特点,内脏团PST含量在排出16 d达标,排出速率先快后慢。内脏团对PST的累积和排出速率显著高于闭壳肌和其他组织,闭壳肌和其他组织则无显著差异。PST进入贻贝体内后发生了代谢转化,贻贝可能将产毒藻中膝沟藻毒素GTX3转化为GTX2,N-磺酰氨甲酰基膝沟藻毒素C2转化为C1,部分C1转化为脱氨甲酰基膝沟藻毒素2(dcGTX2),并将高毒的石房蛤毒素(STX)转化为较低毒的脱氨甲酰基石房蛤毒素(dcSTX)。贻贝对dcSTX有较强的累积能力且排出能力较弱,肝胰腺和肾可能是PST累积的主要部位。该研究可为贝类脱毒与净化、赤潮减灾和水产品质量风险防控提供基础数据和理论依据。

关键词：麻痹性贝类毒素(paralytic shellfish toxins PST) 链状裸甲藻翡翠贻贝累积转化排出

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

对二甲苯对皱纹盘鲍肝胰腺细胞DNA的损伤

引用

应用生态学报 2022年第6期33卷 1679-1685页

作者：许翠娅福建省水产研究所福建厦门361013

为研究对二甲苯对皱纹盘鲍肝胰腺的毒性作用,设置4个浓度(0.5、1.0、1.5和2.0 mg·L^(-1))和对照组,开展为期21 d的对二甲苯对皱纹盘鲍的亚慢性毒性试验,采用彗星试验技术进行皱纹盘鲍肝胰腺细胞DNA损伤分析,采用CASP分析软件对拖尾率... 详细信息

为研究对二甲苯对皱纹盘鲍肝胰腺的毒性作用,设置4个浓度(0.5、1.0、1.5和2.0 mg·L^(-1))和对照组,开展为期21 d的对二甲苯对皱纹盘鲍的亚慢性毒性试验,采用彗星试验技术进行皱纹盘鲍肝胰腺细胞DNA损伤分析,采用CASP分析软件对拖尾率、彗星尾长、彗尾DNA相对含量、Olive矩等损伤指标进行统计。结果表明:与对照组相比,各染毒组皱纹盘鲍肝胰腺细胞DNA均受到损伤,且损伤程度存在显著性差异。随着染毒浓度的增加,肝胰腺细胞DNA受损程度加重,高浓度甚至可以引发细胞凋亡,呈现一定的剂量-损伤效应。中浓度对二甲苯短时间暴露即可对皱纹盘鲍肝胰腺细胞造成DNA损伤,随着暴露时间延长,细胞DNA受损程度加重,呈现一定的时间-损伤效应。但长时间暴露细胞DNA各损伤指标有所减小,这可能与细胞自身的DNA修复机制和生物体解毒系统的代谢机制有关。研究表明,对二甲苯可对皱纹盘鲍肝胰腺细胞产生氧化损伤,导致DNA断裂,高浓度的对二甲苯长时间暴露可导致其细胞凋亡。

关键词：对二甲苯皱纹盘鲍 DNA损伤彗星试验

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modulating charge separation and transfer for high-performance photoelectrodes via built-in electric field

引用

International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1126-1146页

作者： Houyan Cheng Peng Liu Yuntao cui Ru ya Yuxiang Hu Jinshu Wang Key Laboratory of Advanced Functional Materials of Education Ministry of China Faculty of Engineering and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Cryogenic Science and Technology and Beijing Key Lab of Cryo-Biomedical Engineering Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Inner Mongolia Academy of Science and Technology Hohhot 010020China

Constructing a built-in electric field has emerged as a key strategy for enhancing charge separation and transfer,thereby improving photoelectrochemical ***,considerable efforts have been devoted to this *** review systematically summarizes the impact of built-in electric fields on enhancing charge separation and transfer mechanisms,focusing on the modulation of built-in electric fields in terms of depth and ***,mechanisms and tuning strategies for built-in electric fields are ***,the state-of-the-art works regarding built-in electric fields for modulating charge separation and transfer are summarized and categorized according to surface and interface ***,current strategies for constructing bulk built-in electric fields in photoelectrodes are explored,and insights into future developments for enhancing charge separation and transfer in high-performance photoelectrochemical applications are provided.

关键词： photoelectrochemical water splitting bulk built-in electric field cation intercalation charge separation and transfer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Loading capacity and emulsification phenomena of HREE extraction by dialkylphosphinic acids with different β,γ,δ-substituents

引用

Journal of Rare Earths 2024年第1期42卷 191-199,I0007页

作者： Junlian Wang Guodong xu Wen xu Jianguo cui Yufu Chen Ziyong Chang School of Civil and Resource Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines Beijing100083China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou014030China

The relationship between dialkylphosphinic acid structure and their loading capacity for HREEs and emulsification phenomena has rarely been *** this paper,we took Lu extraction as an example to study the effect of β,γ,δ-substituents of dialkylphosphinic acids on their loading capacity and anti-emulsification performance for *** discuss conveniently,the dialkylphosphinic acids were classified into two groups:β-substituent group(P208,INET-1,P218,USTB-1 and P227)and γ,δ-substituent group(P218,P2132 and Cyanex 272).For β-substituent group extractants,their loading capacities are in the order P208(299.7 mg/L)≈INET-1(299.5 mg/L)>P218(270.8 mg/L)>>USTB-1(163.1 mg/L)>P227(151.4 mg/L),while their anti-emulsification/gelation performances are just in the opposite order P227>USTB-1>P218>P208≈INET-1 under the studied *** γ,δ-substituent group extractants,their loading capacities are in the order P218(270.8 mg/L)>P2132(192.3 mg/L)>Cyanex272(131.7 mg/L),while the anti-emulsification performance of P218 is better than those of P2132 and Cyanex *** loading capacity data given in the parentheses are obtained through repeatedly extracting Lu from ~4×10^(-4)mol/L of Lu aqueous feed solution with initial pH of 2.40 by 0.01 mol/L extractant at phase ratio A/O of 1:1.

关键词： Heavy rare earth element Dialkylphosphinic acid Extraction Loading capacity Emulsification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Characteristics and geological significance of the stress state of the lithosphere in the Qinghai-Tibetan Plateau and its neighboring areas

引用

Science China Earth Sciences 2024年第6期67卷 1836-1855页

作者： Qianwen ZHANG ya xu Wei CHU Shupeng LU Key Lab of Petroleum Resource Research Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The present-day lithospheric stress state of the Qinghai-Tibetan Plateau and neighboring areas is controlled by both the lithosphere itself and the underlying *** other words,the stress is affected by the gravitational potential energy(GPE)difference caused by the change in the density distribution within the lithosphere and the drag force on the base of the lithosphere caused by mantle *** study of the lithospheric stress state plays an important role in further understanding the dynamic background and mechanism for the evolution of the Qinghai-Tibetan *** this study,the Crust1.0 crustal density model combined with the S40RTS mantle shear wave velocity variation model was used to calculate the *** EGM2008gravity field model was used to calculate the drag force from mantle convection at the base of the *** lithospheric and joint stress fields of the two sources were obtained by solving the force balance under the thin sheet *** way,we could comprehensively analyze the characteristics of the stress state within the *** regions were classified according to the GPE stress field,mantle drag force stress field,the relative magnitude of the two stress fields,and correlation between the two stress fields and surface *** lithospheric stress fields of the Tarim Basin and other stable blocks are mainly controlled by the GPE *** lithospheric stress field in the collision zone between the Indian Plate and the QinghaiTibetan Plateau is predominantly controlled by the deep mantle drag *** lithospheric stress field in the interior of the Plateau is controlled by both GPE and mantle *** correlation between the lithospheric stress field and surface deformation at the southeast margin of the Qinghai-Tibetan Plateau is *** is hypothesized that the presence of lower crustal flow with lower effective viscosity leads to crust-mantle decoupling,and the mantle drag force has a weaker influe

关键词： Qinghai-Tibetan Plateau Gravitational potential energy Mantle convection Lithospheric deviatoric stress field GPS strain rate field

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of drying-wetting cycles on pore characteristics and mechanical properties of enzyme-induced carbonate precipitation-reinforced sea sand

引用

Journal of Rock Mechanics and Geotechnical Engineering 2024年第1期16卷 291-302页

作者： Ming Huang Kai xu Zijian Liu Chaoshui xu Mingjuan cui College of Civil Engineering Fuzhou UniversityFuzhou350108China Xiamen Rail Transit Construction and Development Group Co. Ltd.Xiamen361000China School of Civil Environment and Mining EngineeringThe University of AdelaideAdelaide5005Australia

Enzyme-induced carbonate precipitation(EICP)is an emanating,eco-friendly and potentially sound technique that has presented promise in various geotechnical ***,the durability and microscopic characteristics of EICP-treated specimens against the impact of drying-wetting(D-W)cycles is under-explored *** study investigates the evolution of mechanical behavior and pore charac-teristics of EICP-treated sea sand subjected to D-W *** uniaxial compressive strength(UCS)tests,synchrotron radiation micro-computed tomography(micro-CT),and three-dimensional(3D)recon-struction of CT images were performed to study the multiscale evolution characteristics of EICP-reinforced sea sand under the effect of D-W *** potential correlations between microstructure characteristics and macro-mechanical property deterioration were investigated using gray relational analysis(GRA).Results showed that the UCS of EICP-treated specimens decreases by 63.7% after 15 D-W *** proportion of mesopores gradually decreases whereas the proportion of macropores in-creases due to the exfoliated calcium carbonate with increasing number of D-W *** micro-structure in EICP-reinforced sea sand was gradually disintegrated,resulting in increasing pore size and development of pore shape from ellipsoidal to columnar and *** gray relational degree suggested that the weight loss rate and UCS deterioration were attributed to the development of branched pores with a size of 100-1000 m m under the action of D-W ***,the results in this study provide a useful guidancee for the long-term stability and evolution characteristics of EICP-reinforced sea sand under D-W weathering conditions.

关键词： Enzyme-induced carbonate precipitation(EICP) Plant-based urease Drying-wetting(D-W)cycles Microstructure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：