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FeXX离子1s^(2)2s^(2)2p^(3)基组态能级结构和磁偶极跃迁参数的理论计算

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光谱学与光谱分析 2024年第3期44卷 693-698页

作者：李东垣欧阳品均索明月王浩王艺璇周书山胡木宏辽宁师范大学物理与电子技术学院辽宁大连116029 辽宁石油化工大学机械工程学院辽宁抚顺113005

原子光谱数据在天体物理探测、等离子体诊断等研究领域中具有重要的作用,准确可靠的原子光谱数据有助于深刻理解天体物理源的本质和等离子体的特性。以多电子的FeXX离子为研究对象,利用多组态相互作用Dirac-Fock方法完成了FeXX离子1s^(2... 详细信息

原子光谱数据在天体物理探测、等离子体诊断等研究领域中具有重要的作用,准确可靠的原子光谱数据有助于深刻理解天体物理源的本质和等离子体的特性。以多电子的FeXX离子为研究对象,利用多组态相互作用Dirac-Fock方法完成了FeXX离子1s^(2)2s^(2)2p^(3)基组态能级结构和组态内磁偶极跃迁参数的理论计算。以全相对论理论框架下的GRASP2K程序为计算基础,细致地考虑了多电子体系的相对论效应和电子关联效应,构建了规模适当、包含关键电子关联效应的相对论原子态波函数;在此基础上,利用微扰法处理Breit相互作用和量子电动力学效应,完成了FeXX离子1s^(2)2s^(2)2p^(3)基组态能级结构和磁偶极跃迁速率、谱线波长和加权振子强度等物理量的高精度理论计算。与现有的实验结果相比,计算得到的FeXX离子1s^(2)2s^(2)2p^(3)基组态各原子态激发能的相对误差范围为0.175%~0.457%,基组态内磁偶极跃迁速率的相对误差范围为0.441%~4.725%,二者都具有较好的精度。FeXX离子1s^(2)2s^(2)2p^(3)基组态内磁偶极跃迁谱线波长和加权振子强度的实验数据还存在大量空白,计算得到的谱线波长与已有的其他理论结果非常接近,二者之间最大差值仅为6.138 88?,希望该计算结果能够为光谱实验测量提供有价值的理论参考。通过该研究可以确定,全相对论多组态相互作用Dirac-Fock方法充分考虑了电子关联效应和相对论效应,适用于多电子体系结构、性质和跃迁行为的理论研究,该方法获得的高精度理论计算结果既可以满足储存环制备高离化原子的实验数据需求,也可以为光谱测量、天体物理、等离子体诊断、受控聚变等方面的相关研究提供可靠的参考数据。

关键词：多组态相互作用能级磁偶极跃迁跃迁速率

非小细胞肺癌患者术前血浆纤维蛋白原降解产物水平与临床病理特征的相关性

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肿瘤研究与临床 2024年第1期36卷 1-5页

作者：车娟娟王婧胡牧甄洪超林海珊尚昆曹邦伟首都医科大学附属北京友谊医院肿瘤科北京100050 首都医科大学附属北京友谊医院胸外科北京100050

目的探讨接受完全切除的非小细胞肺癌(NSCLC)患者术前血浆纤维蛋白原降解产物(FDP)水平与临床病理特征的关系。方法回顾性病例系列研究。回顾性分析2016年1月至2017年12月首都医科大学附属北京友谊医院确诊的521例NSCLC患者资料,其中40... 详细信息

目的探讨接受完全切除的非小细胞肺癌(NSCLC)患者术前血浆纤维蛋白原降解产物(FDP)水平与临床病理特征的关系。方法回顾性病例系列研究。回顾性分析2016年1月至2017年12月首都医科大学附属北京友谊医院确诊的521例NSCLC患者资料,其中406例经术后病理证实无淋巴结及远处转移(无转移组),115例有淋巴结或远处转移(转移组)。比较两组患者术前血浆FDP水平、临床病理特征及不同FDP水平患者的临床病理特征;采用Spearman相关分析比较术前FDP水平与TNM分期的相关性。结果521例NSCLC患者中,女性266例,男性255例;年龄[M(Q_(1),Q_(3))]59岁(54岁,65岁);腺癌441例,鳞状细胞癌70例。无转移组和转移组NSCLC患者术前FDP水平分别为2.78 mg/L(2.35 mg/L,3.13 mg/L)和2.99 mg/L(2.56 mg/L,4.16 mg/L),差异有统计学意义(Z=6.13,P2.78 mg/L组,两组NSCLC患者年龄、转移情况、肿瘤分期、肿瘤长径、淋巴结转移数和组织学类型比较,差异均有统计学意义(均P<0.05)。结论NSCLC患者术前血浆FDP水平升高可能与肿瘤的转移情况和肿瘤临床分期有关。

关键词：癌,非小细胞肺纤维蛋白原肿瘤转移肿瘤分期

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石灰石粉改性膏状瓷砖背胶性能研究

胶体与聚合物 2024年第1期42卷 17-19,23页

作者：胡慕廖国胜陈乐舟廖宜顺梅军鹏武汉科技大学城市建设学院城市更新湖北省工程研究中心武汉科技大学高性能工程结构研究院湖北碱克新材料有限公司武汉430065

研究了石灰石粉掺量对膏状瓷砖背胶在标准养护环境7天、28天龄期以及浸水、冻融和热老化环境下的拉伸粘结强度的影响。结果表明:LP40在热老化环境下的拉伸粘结强度改善尤为明显;在7天时LP40与LP0的拉伸粘结强度相比提高了50%,有效提升... 详细信息

研究了石灰石粉掺量对膏状瓷砖背胶在标准养护环境7天、28天龄期以及浸水、冻融和热老化环境下的拉伸粘结强度的影响。结果表明:LP40在热老化环境下的拉伸粘结强度改善尤为明显;在7天时LP40与LP0的拉伸粘结强度相比提高了50%,有效提升了膏状瓷砖背胶的早期粘结强度。XRD、SEM分析表明,石灰石粉可以填充界面砂浆孔隙,加速水泥砂浆水化,使瓷砖与砂浆界面粘结更为紧密。

关键词：石灰石粉膏状瓷砖背胶龄期养护环境拉伸粘结强度

Eu-MOF-Based Fluorescent Ratiometric Sensor by Detecting 3,4,5-Trihydroxybenzoic for Fingerprint Visualization on Porous Objects

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Photonic Sensors 2024年第1期14卷 85-98页

作者： muwen LIANG Yabin ZHAO Yaping LUO Bin DU Wei hu Bing LIU Xihui mu Zhaoyang TONG Department of Investigation People's Public Security University of ChinaBejing 100038China State Key Laboratory of NBC Protection for Civilian Beijing 102205China

Latent fingerprints(LFPs)at the crime scene are served as important clues to locate the trajectory of criminal behavior and portray the characteristics of the ***,visualizing LFPs is of considerable *** this work,the europium metal-organic framework(Eu-MOF)sensor was successfully constructed for sensitive detection of gallic acid(3,4,5-trihydroxybenzoic acid,GA)and visualization of the sweat *** boric-acid-modified Eu-MOF was prepared by using the simple one-pot solvothermal method using Eu as the metal i ion center and 3,5-dicarboxybenzeneboronic acid(BBDC)as the organic *** sensor showed desirable photoluminescent performance through the chelating of BBDC with Eu3+.The sensor exhibited the satisfactory linear relationship to GA in the range of 1 nM to 20 nM with a low detection limit of 0.34 nM under the optimized *** prepared sensor with ideal selectivity to GA was successfully applied for visualizing LFPs on porous substrates with the high contrast and superior *** the good performance of the sensor,all fingerprint images obtained from 1200 samples presented clear friction ridges and met the identification ***,the sensor had less impact on the subsequent deoxyribonucleic acid(DNA)detection,displaying a promising perspective for applications in extracting physical evidence of site investigation.

关键词： Europium metal-organic framework(Eu-MOF) photoluminescence 3,4,5-trihydroxybenzoic latent fingerprints(LFPs)development

A high-performance electromagnetic energy harvester for scavenging ultra-low frequency vibration energy of human foot movement

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Science China(Technological Sciences) 2024年第5期67卷 1391-1400页

作者： hu JiaJun QIAN Shuo WU hui hu DongXu NIU LiXin BI XiaoXue ZHANG Jie HOU XiaoJuan GENG WenPing mu JiLiang HE Jian CHOU XiuJian Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan030051China School of Software North University of ChinaTaiyuan030051China

In our daily lives,low-frequency kinetic energy primarily manifests as ***,effective harnessing of lowfrequency kinetic energy remains a formidable *** paper proposes a rope-driven rotor that rotates around an axis and consists of an ultra-high-molecular-weight polyethylene(UHMWPE)wire wrapped around a metal *** rotor can convert ultra-low frequency vibration/linear motion into rapid rotation by pressing the top at low frequencies and driving the rope for a quick *** harvester can generate up to 36.25 m W power using a 0.1-mm-diameter UHMWPE wire as the rotor when periodically pressed down to 20 mm at a frequency of 1 Hz.A simple power generation floor is assembled,generating 28.58-m W power with a matching load at a frequency of 1.5 ***,the harvester can increase the charging voltage of a 0.47-F supercapacitor from 0 to 6.8 V within 10 *** addition,the harvester can harvest energy through a light finger press motion,and the energy obtained can also support the continuous operation of multiple electronic devices *** study introduces an effective method for harvesting ultra-low frequency energy and has great prospects in the field of power generation floor and human movement energy harvesting.

关键词： electromagnetic energy harvester rope-shaft coupling structure human motion ultra-low frequency

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社会翻译学的价值功用与应用前景

外语教学 2023年第5期44卷 20-25页

作者：胡牧南京师范大学外国语学院

社会翻译学经过近50年的发展,已“名”副其“实”地成为翻译学的重要分支,彰显了中外学术共同体秉持的价值取向。社会翻译学在本质上具有社会性与关联性,便于通过“全过程研究”模式拓展翻译实践的多元价值。研究发现,以中国经验、语境... 详细信息

社会翻译学经过近50年的发展,已“名”副其“实”地成为翻译学的重要分支,彰显了中外学术共同体秉持的价值取向。社会翻译学在本质上具有社会性与关联性,便于通过“全过程研究”模式拓展翻译实践的多元价值。研究发现,以中国经验、语境为背景,社会翻译学的本土化建构,兼具理论与应用价值,能够有效地描述与预测翻译实践在不同时期对社会发展进程的推进作用,能够丰富翻译学体系内涵的多样性,具有重要的应用前景。

关键词：社会翻译学价值功用全过程研究本土化建构应用前景

Dietary sodium acetate and sodium butyrate attenuate intestinal damage and improve lipid metabolism in juvenile largemouth bass(Micropterus salmoides) fed a high carbohydrate diet by reducing endoplasmic reticulum stress

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Animal Nutrition 2024年第1期16卷 443-456页

作者： Liulan Zhao Liangshun Cheng Yifang hu Xiaohui Li Yihui Yang Jin mu Lianfeng Shen Guojun hu Kuo He Haoxiao Yan Qiao Liu Song Yang College of Animal Science and Technology Sichuan Agricultural University

High-carbohydrate(HC) diets decrease the intestinal levels of sodium acetate(SA) and sodium butyrate(SB) and impair the gut health of largemouth bass; however, SA and SB have been shown to enhance immunity and improve intestinal health in farmed animals. Thus, the present study was to investigate the effects of dietary SA and SB on HC diet-induced intestinal injury and the potential mechanisms in juvenile largemouth bass. The experiment set five isonitrogenous and isolipidic diets, including a lowcarbohydrate diet(9% starch)(LC), a high carbohydrate diet(18% starch)(HC), and the HC diet supplemented with 2 g/kg SA(HCSA), 2 g/kg SB(HCSB) or a combination of 1 g/kg SA and 1 g/kg SB(HCSASB).The feeding experiment was conducted for 8 weeks. A total of 525 juvenile largemouth bass with an initial body weight of 7.00 ± 0.20 g were used. The results showed that dietary SA and SB improved the weight gain rate and specific growth rate (P<0.05) and ameliorated serum parameters(alkaline phosphatase, acid phosphatase, glutamate transaminase, and glutamic oxaloacetic transaminase)(P<0.05). And, importantly, dietary SA and SB repaired the intestinal barrier by increasing the expression levels of zonula occludens-1, occludin, and claudin-7(P<0.05), reduced HC-induced intestinal damage, and alleviated intestinal inflammation and cell apoptosis by attenuating HC-induced intestinal endoplasmic reticulum stress(P<0.05). Further results revealed that dietary SA and SB reduced HC-induced intestinal fat deposition by inhibiting adipogenesis and promoting lipolysis(P<0.05). In summary, this study demonstrated that dietary SA and SB attenuated HC-induced intestinal damage and reduced excessive intestinal fat deposition in largemouth bass.

关键词： Sodium acetate Sodium butyrate High carbohydrate diet Endoplasmic reticulum stress Intestine health Lipid metabolism

窃听信道下基于双分簇技术的信源安全有损传输

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电子学报 2022年第9期50卷 2196-2204页

作者：徐明胡沐宇上海海事大学信息工程学院上海201306

针对图像、视频等文件在压缩传输时的可靠性和安全性问题,提出一种具有边信息和状态信息的窃听信道模型以及该模型下基于双分簇技术的信源安全有损传输方案,并利用信息理论对速率-失真-信息泄露率三元组进行可达性和逆命题证明.考虑到... 详细信息

针对图像、视频等文件在压缩传输时的可靠性和安全性问题,提出一种具有边信息和状态信息的窃听信道模型以及该模型下基于双分簇技术的信源安全有损传输方案,并利用信息理论对速率-失真-信息泄露率三元组进行可达性和逆命题证明.考虑到现实环境中的噪声因素,以高斯噪声信道为例进行具体分析,通过误差估计和微分熵定理推导出速率和失真的下界.此外,引入模糊率,将信息泄漏率转化为估计信源的最小均方误差,得出此误差的上界.仿真实验表明,所提方案在最优条件下比现有方案速率高,失真和信息泄露率小,在非最优条件下比现有方案模糊率高.

关键词：窃听信道双分簇技术安全有损传输边信息状态信息信息泄漏

Correlation of gut microorganisms and non-volatile flavor substances provides new insights for breeding Scylla paramamosain

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Journal of Oceanology and Limnology 2024年第4期42卷 1336-1347页

作者： Gao GAO Xing LI Kangxiang QIN Yun hu Xiaosong JIANG Chenxi CHE Yuntao LI Changkao mu Chunlin WANG huan WANG School of Marine Science Ningbo UniversityNingbo 315211China Key Laboratory of Applied Marine Biotechnology Ministry of EducationNingbo UniversityNingbo 315211China

The farming of Scylla paramamosain with specific flavors has a higher commercial value,and the flavors are related to the integrated farming environment and non-volatile flavor substances,while the survival environment is one of the important ways to source gut microorganisms in the *** this study,the levels of dominant taxa in the gut flora of *** from Mong Cai,Vietnam(VN),Taishan City,Guangdong Province(TS)of China,and Ninghai County,Ningbo City(NB)Zhejiang Province of China converged with those of *** from Sanmen County,Ningbo City(CK 1,CK 2,and CK 3)at 28 d of *** top 15 genera with the highest abundance of VN,TS,and NB gut flora were the same as CK 1,CK 2,and CK 3,but with different percentages,and gradually converged to CK 1,CK 2,and CK 3,respectively,at 28 d of *** between intestinal flora and non-volatile flavor substances in the hepatopancreas at the percentage level of relative abundance of bacterial genera found that above 28 d of domestication,muribaculaceae,Psychrilyobacter,Clostridia_vadinBB 60_group,Halarcobacter Carboxylicivirga,Sediminispirochaeta may be the most important genera affecting flavor amino acids of ***,Carboxylicivirga,Halarcobacter,Photobacterium,ZOR 0006,Psychrilyobacter,and Pseudomonas may be the most important genera affecting flavor amino acids of ***,Carboxylicivirga,Halarcobacter,Photobacterium,ZOR 0006,Vibrio,and Sphingomonas may be the most important genera affecting flavor amino acids of *** results show that the intestinal flora structure of crabs from different areas were domesticated in the same area for at least 28 d before they converged to that of the domesticated crab,and the most important genera affecting the flavor amino acids of TS,VN,and NB were also *** results of this study provide a reference and basis for the technique of directional cultivation of the flavor quality of the crab.

关键词： survival environment Scylla paramamosain intestinal flora structure non-volatile flavor substance directional breeding