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Effect of alumina occurrence form on metallurgical properties of hematite and magnetite pellets

Journal of Iron and Steel Research International 2024年第4期31卷 797-809页

作者： Jian Pan Chen-mei Tang Cong-cong Yang De-qing Zhu Zheng-qi Guo Wei-qun huang School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina Exploration and Development of Geology and Mineral Resources Co. Ltd.Nanchang 330030JiangxiChina

The effect of alumina occurrence form on the metallurgical properties of both hematite and magnetite pellets was investigated at the same Al_(2)O level of 2 wt.%,including reduction index(RI),low-temperature reduction disintegration index(RDI),reduction swelling index(RSI),and high-temperature softening-dripping *** mineralogy of fired pellets was also studied to reveal the influence of alumina occurrence form on the phase composition and *** the results,the alumina occurrence form presents tremendous impacts on the metallurgical perfor-mance of both magnetite and hematite *** of all alumina occurrence forms contributes to inferior reducibility of pellets,especially in the case of gibbsite for magnetite pellets with a RI of 58.4%and kaolinite for hematite pellets with a RI of 56.8%.However,addition of all alumina occurrence forms improves the RDI of magnetite pellets,while there is no significant difference among various alumina occurrence *** contrast,alumina occurrence forms have little influence on the RDI of hematite *** presence of free alumina,gibbsite,and kaolinite tends to improve the RSI of hematite and magnetite pellets,whereas hercynite gives the opposite trend with a RSI of 25.6%.For softening-dripping performance of magnetite pellets,all alumina occurrence forms contribute to narrower softening-melting ***,alumina,gibbsite,and kaolinite give narrower softening-dripping interval,at 229,217,and 88℃,respectively,whereas addition of hercynite results in the largest melting range at 276℃ due to its high melting *** hematite pellets,free alumina,gibbsite,and hercynite tend to enlarge melting range,whereas kaolinite contributes to lower dripping temperature of 1148℃ and narrow softening-dripping interval of 88℃ due to the formation of a greater amount of slag phase at high temperatures.

关键词： Oxidized pellet Magnetite Hematite Alumina occurrence form Metallurgical performance Blast furnace

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亚热带森林中树木大小可调控功能性状与存活率之间的关系

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Journal of Plant Ecology 2024年第3期17卷 63-72页

作者： Zhen-Yu Wang Zhi-qun huang Key Laboratory of Humid Subtropical Eco-Geographical Process of Ministry of Education Fujian Normal UniversityFuzhou 350007China School of Geographical Science Fujian Normal UniversityFuzhou 350007China

使用功能性状来预测植物的存活率是生态学研究中的一个挑战。然而,由于对根系性状的研究较少,根系和叶片性状与树木存活率的一致性尚不确定。此外,植物性状与存活率之间的关系通常是非线性的,并且可能会随着树木大小的变化而变化。本研... 详细信息

使用功能性状来预测植物的存活率是生态学研究中的一个挑战。然而,由于对根系性状的研究较少,根系和叶片性状与树木存活率的一致性尚不确定。此外,植物性状与存活率之间的关系通常是非线性的,并且可能会随着树木大小的变化而变化。本研究整合了在亚热带纯林中生长的32个常见树种共17901棵树的存活率数据,以检验根系和叶片性状与树木存活率的一致性,以及这些性状与存活率之间的关系如何随树木地径大小的变化而变化。结果发现,叶片和根系性状对树木存活率的影响并不一致。具体而言,代表获取策略的比叶面积对存活率有边际显著的负影响,而在一维根经济谱中代表保守策略的根直径也对存活率有显著的负影响。此外,性状与树木存活率之间的关系受到树木大小的调控。比叶面积、叶磷浓度和比根长对存活率的影响随着树木大小的增加由负转正。然而,叶厚度和根直径仅对地径较小的树木的存活率有正效应。上述结果表明,若要准确预测植物性状与存活率的关系,需同时考虑地上和地下性状,以及调控这种关系的树木大小信息。

关键词：森林动态多维性植物表现植物策略根系经济谱

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Coordination of networking and computing: toward new information infrastructure and new services mode

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Frontiers of Information Technology & Electronic Engineering 2024年第5期25卷 629-632页

作者： Xiaoyun WANG Tao SUN Yong CUI Rajkumar BUYYA Deke GUO qun huang Hassnaa MOUSTAFA Chen TIAN Shangguang WANG China Mobile Communications Corporation Beijing 100032China China Mobile Research Institute Beijing 100053China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China CLOUDS Lab School of Computing and Information SystemsUniversity of MelbourneMelbourneVIC 3010Australia National Key Laboratory of Information Systems Engineering National University of Defense TechnologyChangsha 410073China School of Computer Science Peking UniversityBeijing 100871China Intel Corporation Santa ClaraCA 95054USA State Key Laboratory for Novel Sofiware Technology Nanjing UniversityNanjing 210023China State Key Laboratory of Networking and Switching Technology Bejing University of Posts and TelecommunicationsBeijing 100876China

Computing,serving as the cornerstone of information processing,plays a pivotal role in the digital service ***"network"and"computing,"responsible for information transmission and processing respectively,traditionally belong to different stakeholders and have evolved ***,the recent trend toward the coordination and integration of computing and networks has garnered significant attention from both industry and *** such as"computility network"and"computing force network"have emerged,and the International Telecommunication Union-Telecommunication Standardization(ITU-T)has initiated efforts to develop standards for the coordination of networking and computing(CNC),focusing on the architecture and framework.

关键词： computing services network

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Naringin ameliorates H_(2)O_(2)-induced oxidative damage in cells and prolongs the lifespan of female Drosophila melanogaster via the insulin signaling pathway

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Food Science and Human Wellness 2024年第3期13卷 1231-1245页

作者： Xiaomei Du Kexin Wang Xiaoyan Sang Xiangxing Meng Jiao Xie Tianxin Wang Xiaozhi Liu qun huang Nan Zhang Hao Wang State Key Laboratory of Food Nutrition and Safety Tianjin University of Science and TechnologyTianjin 300457China The key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of EducationGuizhou Medical UniversityGuizhou 550025China Department of neurosurgery the Fifth Central Hospital of TianjinTianjin 300450China Tianjin Key Laboratory of Epigenetics for Organ Department in Preterm Infants the Fifth Central Hospital of TianjinTianjin 300450China

Naringin exists in a wide range of Chinese herbal medicine and has proven to possess several pharmacological *** this study,PC12,HepG2 cells,and female Drosophila melanogaster were used to investigate the antioxidative and anti-aging effects of naringin and explore the underlying *** results showed that naringin inhibited H_(2)O_(2)-induced decline in cell viability and decreased,the content of reactive oxygen species in ***,naringin prolonged the lifespan of flies,enhanced the abilities of climbing and the resistance to stress,improved the activities of antioxidant enzymes,and decreased malondialdehyde *** also improved intestinal barrier dysfunction and reduced abnormal proliferation of intestinal stem ***,naringin down-regulated the mRNA expressions of inr,chico,pi 3k,and akt-1,and up-regulated the mRNA expressions of dilp2,dilp3,dilp5,and foxo,thereby activating autophagy-related genes and increasing the number of ***,the mutant stocks assays and computer molecular simulation results further indicated that naringin delayed aging by inhibiting the insulin signaling(IIS)pathway and activating the autophagy pathway,which was consistent with the result of network pharmacological predictions.

关键词： Drosophila melanogaster Insulin signaling(IIS)pathway Naringin PC12 cell HepG2 cell

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Fibroblast growth factor 21 inhibits ferroptosis following spinal cord injury by regulating heme oxygenase-1

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Neural Regeneration Research 2024年第7期19卷 1568-1574页

作者： Qi Gu Weiping Sha qun huang Jin Wang Yi Zhu Tianli Xu Zhenhua Xu Qiancheng Zhu Jianfei Ge Shoujin Tian Xiaolong Lin Department of Orthopaedic Surgery Zhangjiagang Hospital Affiliated to Soochow UniversitySuzhouJiangsu ProvinceChina Orthopedics Laboratory The First People’s Hospital of Zhangjiagang CitySuzhouJiangsu ProvinceChina Department of Anesthesiology Zhangjiagang Hospital Affiliated to Soochow UniversitySuzhouJiangsu ProvinceChina

Interfering with the ferroptosis pathway is a new strategy for the treatment of spinal cord *** growth factor 21 can inhibit ferro ptosis and promote neurofunctional recovery,while heme oxygenase-1 is a regulator of iron and reactive oxygen species *** relationship between heme oxygenase-1and ferroptosis remains controve *** this study,we used a spinal co rd injury rat model to show that the levels of fibroblast growth factor 21 in spinal co rd tissue decreased after spinal cord *** addition,there was a significant aggravation of ferroptosis and a rapid increase in heme oxygenase-1 expression after spinal cord *** r,heme oxygenase-1 aggravated fe rroptosis after spinal cord injury,while fibroblast growth factor 21 inhibited fe rroptosis by downregulating heme ***,the activation of fibroblast growth factor 21 may provide a potential treatment for spinal co rd *** findings could provide a new potential mechanistic explanation for fibroblast growth factor 21 in the treatment of spinal cord injury.

关键词： ferroptosis fibroblast growth factor 21 functional recovery heme oxygenase-1 lipid peroxidation neuron reactive oxygen species spinal cord injury

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A Prognostic Biomarker for Bladder Cancer Correlated with Immune Infiltration Is PAEP

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Journal of Biosciences and Medicines 2024年第4期12卷 185-209页

作者： Ning Tang Shasha Gai qun huang Nationalities Youjiang Medical University Baise China Nationalities Graduate School Youjiang Medical University Baise China Department of Urology the Affiliated Hospital of Youjiang Medical University for Nationalities Baise China The Affiliated Hospital of Youjiang Medical University for Nationalities Baise China

Background: A major cause of cancer death worldwide is bladder cancer, which is the most common malignant tumor of the urinary tract. PAEP is a member of the kernel lipocalin superfamily whose members share relatively low sequence similarity but have highly conserved exon/intron structure and three-dimensional protein folding. Most lipocalins are clustered on the long arm of chromosome 9. The purpose of this study was to clarify the correlation between PAEP expression level and bladder cancer. Methods: In the TCGA database, we obtained clinical and RNA sequencing data of 431 BLCA patients, including 412 BLCA tissues and 19 normal bladder tissues in the study. Analyses of bioinformatics were conducted in this study to determine the role of PAEP in bladder cancer. A quantitative real-time PCR method was used to quantitate the gene expression profile. Additionally, the effect of PAEP on tumor immune infiltration and prognosis was analyzed. Results: PAEP was a poor prognostic biomarker of bladder cancer because it was significantly upregulated. bladder cancer patients with higher PAEP expression had poor outcomes. An AUC of 0.780 was calculated from the area under the ROC curve. PAEP was associated with T stage, pathologic stage, Histologic grade and Subtype of bladder cancer patients, and served as an independent predictor of overall survival in bladder cancer patients. Functional enrichment analysis revealed PAEP was obviously enriched in pathways connected with carcinogenesis and immunosuppression. The expression of PAEP was significantly associated with tumor immune cells and immune checkpoints according to ssGSEA and Spearman correlation analysis. Conclusions: In this study, we screened and detected a mRNA, PAEP is a prognostic and immune-related biomarker in BLCA, which may contribute to the early diagnosis and treatment of BLCA.

关键词： PAEP Bladder Cancer Immune Cell Infiltration Immune Checkpoint Prognosis

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Reduction of the oxidative damage to H_(2)O_(2)-induced HepG2 cells via the Nrf2 signalling pathway by plant flavonoids Quercetin and Hyperoside

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Food Science and Human Wellness 2024年第4期13卷 1864-1876页

作者： Meijing Zhang Gaoshuai Zhang Xiangxing Meng Xinxin Wang Jiao Xie Shaoshu Wang Biao Wang Jilite Wang Suwen Liu qun huang Xu Yang Jing Li Hao Wang State Key Laboratory of Food Nutrition and Safety Tianjin University of Science and Technology(TUST)Tianjin 300457China Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of EducationGuizhou Medical UniversityGuiyang 550025China College of Chemical Engineering and Materials Science Tianjin University of Science and Technology(TUST)Tianjin 300457China Department of Agriculture Hetao CollegeBayannur 015000China College of Food Science&Technology Hebei Normal University of Science and TechnologyQinhuangdao 066004China National Center of Supervision and Inspection for Processed Food Quality Tianjin Institute for Food Safety Inspection TechnologyTianjin 300457China

Hyperoside and quercetin are similar in molecular *** this study,the antioxidant regulatory targets of hyperoside and quercetin are mainly in the nuclear factor(erythroid-2-derived)-related factor 2(Nrf2)pathway predicted by network *** the antioxidant effect and mechanism of hyperoside and quercetin were measured and compared in H_(2)O_(2)-induced Hep G2 cells and Caenorhabditis *** findings indicated that quercetin was more effective than hyperoside in reducing oxidative damage,which was proved by improved cell viability,decreased reactive oxygen species(ROS)production,decreased cellular apoptosis,and alleviated mitochondrial *** addition,quercetin was more efficient than hyperoside in enhancing the expression of Nrf2-associated m RNAs,increasing the activities of superoxide dismutase(SOD),glutathione peroxidase(GSH-Px),and catalase(CAT),and reducing the cellular malondialdehyde(MDA)*** was superior to hyperoside in prolonging the lifespan of worms,decreasing the accumulation of lipofuscin,inhibiting ROS production,and increasing the proportion of skn-1 in the *** the Nrf2 inhibitor ML385,we verified that quercetin and hyperoside primarily protected the cells against oxidative damage via the Nrf2 signalling ***,molecular docking and dynamics simulations demonstrated that the quercetin-Kelch-like ECH-associated protein 1(Keap1)complex was more stable than the hyperoside-Keap1 *** stable structure of the complex might hinder the binding of Nrf2 and Keap1 to release Nrf2 and facilitate its entry into the nucleus to play an antioxidant ***,quercetin had a better antioxidant than hyperoside.

关键词： Hyperoside Quercetin HepG2 cell Oxidative damage Nrf2 signalling pathway

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小学语文抒情性作品朗读教学须“以声悟情,以声传情”

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教学与管理 2024年第17期 48-51页

作者：黄群娇广西民族师范学院教育科学学院

抒情性作品的语言是诗性的,抒情性作品的独特性是“抒情”。因而,对抒情性作品的阅读与鉴赏,需要“共情”,继而达到共鸣。声音是情感的外在表现形式,从“声”的角度入手,“因声求气,因气悟文”,最后“得他滋味”。声,即朗读。因此,基于... 详细信息

抒情性作品的语言是诗性的,抒情性作品的独特性是“抒情”。因而,对抒情性作品的阅读与鉴赏,需要“共情”,继而达到共鸣。声音是情感的外在表现形式,从“声”的角度入手,“因声求气,因气悟文”,最后“得他滋味”。声,即朗读。因此,基于“以声悟情,以声传情”视角,提出小学语文抒情性作品朗读教学策略:明确所品之情,以品悟情感为教学主目标,从提高朗读能力的角度设计主问题,以朗读为主要教学手段,落实各个教学环节。

关键词：小学语文抒情性作品朗读教学

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海归高管能推动企业数字化转型吗?

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科学学研究 2024年第4期42卷 778-796页

作者：张慧黄群慧中国社会科学院大学商学院北京102488 中国社会科学院经济研究所北京100836 中国社会科学院大学经济学院北京102488

本文以2010-2020年沪深两市A股上市公司为研究样本,分析海归高管对企业数字化转型的影响及其作用机制。研究结果表明:(1)海归高管有助于推动企业数字化转型,这一结论在考虑内生性并经过多种稳健性检验后依然成立;(2)作用机制表明,海归... 详细信息

本文以2010-2020年沪深两市A股上市公司为研究样本,分析海归高管对企业数字化转型的影响及其作用机制。研究结果表明:(1)海归高管有助于推动企业数字化转型,这一结论在考虑内生性并经过多种稳健性检验后依然成立;(2)作用机制表明,海归高管主要通过提升企业人力资本水平、学习吸收能力以及ESG责任履行程度三重机制推动企业数字化转型;(3)异质性分析表明,海归高管对企业数字化转型的促进作用在中小企业以及金融资产配置效率低的企业中更为显著。研究结论既丰富和拓展了高阶梯队理论以及企业数字化转型影响因素的相关研究,还有助于为企业如何顺应数字化发展趋势,加快企业数字化转型进程提供经验证据。

关键词：海归高管企业数字化转型人力资本学习吸收能力 ESG责任履行

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新质生产力系统:要素特质、结构承载与功能取向

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改革 2024年第2期 15-24页

作者：黄群慧盛方富中国社会科学院经济研究所中国社会科学院大学经济学院江西省社会科学院

每次人类社会大变局都蕴含着生产力的巨大革新,世界百年未有之大变局加速演进内在要求孕育形成新质生产力。新质生产力作为生产力发展的质变跃迁,是推动实现高质量发展的动力之源。从系统论视角来看,新质生产力是由相互联系、相互作用... 详细信息

每次人类社会大变局都蕴含着生产力的巨大革新,世界百年未有之大变局加速演进内在要求孕育形成新质生产力。新质生产力作为生产力发展的质变跃迁,是推动实现高质量发展的动力之源。从系统论视角来看,新质生产力是由相互联系、相互作用的生产力要素、生产力结构、生产力功能构成的“要素—结构—功能”系统。其中,新质生产力要素由新型劳动者、新型劳动对象、新型劳动工具、新型基础设施等构成,新质生产力在结构承载上表现为由新兴产业、未来产业等主导发展形成的现代化产业体系,新质生产力功能则凸显新发展理念、追求实现高质量发展、更好满足人民美好生活需要的价值取向。加快发展新质生产力,应扩大新型要素供给、以科技创新引领现代化产业体系建设、强化新质生产力系统功能取向,通过继续深化改革塑造与新质生产力发展相适应的生产关系。

关键词：新质生产力新型生产要素现代化产业体系高质量发展

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