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Numerical simulation of time delay interferometry for TAIJI and new LISA

Research in Astronomy and Astrophysics 2019年第4期19卷 95-108页

作者： Gang Wang wei-tou ni INFN Gran Sasso Science Institute INFN Sezione di PisaEdificio CLargo Bruno Pontecorvo National Astronomical Observatories Chinese Academy of Sciences State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of Sciences

The success of LISA Pathfinder in demonstrating the LISA drag-free requirement paved the way for using space interferometers to detect low-frequency and middle-frequency gravitational waves(GWs). The TAIJI GW mission and the new LISA GW mission propose using an arm length of 3 Gm(1 Gm = 10~6 km) and an arm length of 2.5 Gm respectively. For a space laser-interferometric GW antenna,due to astrodynamical orbit variation, time delay interferometry(TDI) is needed to achieve nearly equivalent equal-arms for suppressing the laser frequency noise below the level of optical path noise, acceleration noise, etc in order to attain the requisite sensitivity. In this paper, we simulate TDI numerically for the TAIJI mission and the new LISA mission. To do this, we work out a set of 2200-day(6-year) optimized science orbits for each mission starting on 2028 March 22 using the CGC 2.7.1 ephemeris framework. Then we use the numerical method to calculate the residual optical path differences of the first-generation TDI configurations and the selected second-generation TDI configurations. The resulting optical path differences of the second-generation TDI configurations calculated for TAIJI, new LISA and eLISA are well below their respective requirements for laser frequency noise cancelation. However, for the first-generation TDI configurations, the original requirements need to be relaxed by 3 to 30 fold to be satisfied. For TAIJI and the new LISA, about one order of magnitude relaxation would be good and recommended; this could be borne on the laser stability requirement in view of recent progress in laser stability, or the GW detection sensitivities of the second-generation TDIs have to be used in the diagnosis of the observed data instead of the commonly used X, Y and Z TDIs.

关键词： gravitational waves methods:numerical techniques:interferometric

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On networks of space-based gravitational-wave detectors

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Fundamental Research 2024年第5期4卷 1072-1085页

作者： Rong-Gen Cai Zong-Kuan Guo Bin Hu Chang Liu Youjun Lu wei-tou ni Wen-Hong Ruan Naoki Seto Gang Wang Yue-Liang Wu CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Science and Technology Ningbo UniversityNingbo 315211China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou225009China National Astronomical Observatories Chinese Academy of SciencesBeijing100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing100049China International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and Technology(APM)Chinese Academy of SciencesWuhan 430071China Department of Physics Kyoto UniversityKyoto 606–8502Japan Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai200030China International Centre for Theoretical Physics Asia-Pacific Beijing/HangzhouChina

The space-based laser interferometers,LISA,Taiji and TianQin,are targeting to observe milliHz gravitational waves(GWs)in the *** joint observations from multiple space-based detectors yield significant *** this work,we recap the studies and investigations for the joint space-based GW detector networks to highlight:1)the high precision of sky localization for the massive binary black hole(BBH)coalescences and the GW sirens in the cosmological implication,2)the effectiveness to test the parity violation in the stochastic GW background observations,3)the efficiency of subtracting galactic foreground,4)the improvement in stellar-mass BBH *** inspect alternative networks by trading off massive BBH observations and stochastic GW background observation.

关键词： Gravitational waves Detector networks LISA Taiji Tianqin Massive binary black holes Galactic binaries Stochastic gravitational wave background

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Fabrication of ni-Zn spinel ferrite with superior magnetic performance from electric arc furnace dust and iron scale

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Journal of Iron and Steel Research International 2025年第1期32卷 105-114页

作者： Yang Li wei-zhe Jie Chang Chen Yi Su Wu Zhou Hua Zhang Hong-wei ni The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430081HubeiChina The Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan430081HubeiChina Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan430081HubeiChina

The ni-ZnFe_(2)O_(4)(nixZn_(1-x)Fe_(2)O_(4),x=0.4-0.7)spinel was synthesized using Zn2+extracted from electric arc furnace dust(EAFD),nickel chloride hexahydrate,and Fe^(3+)extracted from iron scale as raw *** zinc was selectively extracted from EAFD using CaO roasting followed by NH_(4)Cl solution *** ferric ion was leached from iron scale using HCl solution as acid *** experimental results demonstrate a high level of efficiency in the extraction of zinc,with a rate of 97.5%,and the leaching rate of ferric ion is 96.89%.The composition of the leaching solution is primary zinc and iron with low calcium,which is beneficial to the preparation of spinel *** influence of ni content(x)and calcination temperature on the synthesis and magnetic properties of nixZn_(1-x)Fe_(2)O_(4)compounds was investigated by X-ray diffraction,scanning electron microscopy,and vibrating sample *** results revealed that both ni content and calcination temperature significantly affect the synthesis and magnetic properties of spinel nixZn_(1-x)Fe_(2)O_(4).Under the conditions of ni content set at x=0.6,calcination temperature of 1100℃,and a duration of 2 h,a spinel nixZn_(1-x)Fe_(2)O_(4)with high saturation magnetization(Ms=65.7 A m2 kg-1)and low coercivity(Hc=0.056 A m^(-1))was obtained.

关键词： Electric furnace arc dust Iron scale Spinel ferrite Magnetic performance Calcination temperature

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Traditionl Villages Saving the Foundation

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China Weekly 2025年第1期 18-24页

作者： Xu Pengyuan ni wei Wang Yan 不详

Amid rapid urbanization,ancient Chinese villages stand as living testaments to traditional culture,architecture and *** can their spirit endure the push for modernity?At 54,and having been away for decades,Zhang Can-zhong never thought he would return to his hometown permanently,a secluded and underdeveloped place in the remote countryside which still has no highway access.

关键词： return permanent push

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Cutting force modeling in high-speed machining of selective laser melted Ti6Al4V alloys based on a modified constitutive model considering thermally activated effect

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Science China Technological Sciences 2025年第3期68卷 142-159页

作者： Dejian LIU Chenbing ni Youqiang WANG Lida ZHU Zhongpeng ZHENG wei LU Naixin ZHANG Xingbao HUANG School of Mechanical and Automotive Engineering Qingdao University of Technology Key Lab of Industrial Fluid Energy Conservation and Pollution Control Ministry of Education School of Mechanical Engineering and Automation Northeastern University School of Mechanical Engineering Tsinghua University Shandong Zhongheng Jingxin Carbon Fiber Technology Development Co. Ltd State Key Laboratory of Bridge Safety and Resilience College of Civil Engineering Hunan University

The thermally activated effect can produce a vital influence on the mechanical property and cutting force of metal materials in the machining process. An insight can be gained into the action criteria of the thermally activated effect on the cutting force, which provides a solid basis of the research of material performance and machinability. In this study, a cutting force model of selective laser melted(SLMed) Ti6Al4V alloy is proposed by introducing the modified constitutive model with thermally activated effects and the analytical model of the deformation zone into the cutting force model. The anisotropic properties of SLMed Ti6Al4V alloy under different scanning strategies(0°, 67.5°, and 90°) are explored by combining with the cutting force model, constitutive model and analytical model of deformation zone(primary deformation and tool-chip contact area). The action of thermally activated effects on the cutting force, primary deformation and tool-chip contact zone is also researched in detail. Milling experiments and predictions of SLMed Ti6Al4V alloy under different scanning strategies have been implemented to reveal the effectiveness of this new model. The comparison results indicate that the proposed milling force model can effectively predict milling force and reflect well on the anisotropy of SLMed Ti6Al4V *** addition, this proposed force model can well analyze the action mechanism of the thermally activated effect on the milling force of SLMed Ti6Al4V alloy, which is significantly essential for the machining mechanism research in terms of a microscopic perspective.

关键词： cutting force model modified constitutive model thermally activated effect SLMed Ti6Al4V alloy laser scanning strategies anisotropic properties

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Effects of Ti-and Nb-based transition element from single to multiple compound oxides and carbon-based composite additives on Mg-MgH2 hydrogen storage material

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Tungsten 2025年第1期7卷 32-49页

作者： Li-Rong Xiao Chen Chen Shuo Wang Zi-Yin Dai Hideo Kimura Cui ni Chuan-Xin Hou Xue-Qin Sun Si-Jie Guo wei Du Xiu-Bo Xie School of Environmental and Material Engineering Yantai University Bosch HUAYU Steering Systems (Yantai) Co. Ltd.Ytp/MFE University of Tennessee Knoxville Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta Shandong University of Aeronautics

MgH2is considered as a promising hydrogen storage material for its high hydrogen storage capacity,low cost and abundant resource ***,the low kinetics and high enthalpy formation of MgH2limit its wide *** the perspective of adding catalysts to enhance the hydrogen storage properties of Mg-MgH2,this article elaborated the main catalysts based on Ti and Nb transition elements,including single oxide catalysts,binary oxides catalysts（combined with ni,Na,Sr,V,etc.）,multiple catalysts bound to carbon,and composite catalysts with Ti and Nb elements combined with MXene ***,the main pathways of various catalysts to reduce the reaction activity and broaden the hydrogen desorption channel were also *** Ti-based catalysts can enhance the reactive sites of the matrix by forming multivalent states,while Nb-based catalysts broaden the hydrogen reaction channels by forming tiny *** improving the size structure and enhancing the grain size stability,combined with carbon materials should be the future considerations.

关键词： Catalysts Mg-based hydrogen storage alloys Solid hydrogen storage Transition metal elements

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Efficacy of combined psychological and physical nursing in preventing peripherally inserted central catheter-related thrombosis in gastric cancer patients

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World Journal of Gastrointestinal Surgery 2025年第3期17卷 206-212页

作者： wei-Jing ni Yu-Xiu Xi Yong-Chao Zhou Venous Therapy Nursing Clinic Affiliated Hospital of Jiangnan UniversityWuxi 214000Jiangsu ProvinceChina

BACKGROUND Long-term chemotherapy for patients with gastric cancer(GC),facilitated by peripherally inserted central catheter(PICC)catheterization,reduces vascular damage and enhances drug delivery efficiency but carries risks of catheter-related complications.A combination of group psychological nursing and physical mo-vement care significantly mitigates the risk of venous thrombosis and improves psychological well-being,and enhances motor function,underscoring its clinical *** To assess group psychological and physical movement nursing in preventing venous thrombosis in patients with PICC *** Sixty-five GC patients with PICC,admitted from January 2022 to January 2023,were randomly divided into two groups using the lottery method:A control group(n=35,routine nursing)and an observation group(n=30,routine nursing plus psychological nursing and physical movement nursing).Both groups re-ceived continuous care for 2 ***-nursing and post-nursing data on psycho-logical state,physical function,chemotherapy-related thrombosis incidence,and cancer-related fatigue were analyzed using SPSS 26.0 and GraphPad Prism *** After nursing,both groups showed reduced Hamilton Anxiety Scale scores and increased General Perceived Self-Efficacy Scale scores,with the observation group performing better(Pnificant difference was observed in the incidence of venous thrombosis between the two groups(χ2=0.815,P=0.367),the observation group had lower *** groups showed decreased Revised Piper Fatigue Scale scores,with the observation group scoring lower(P<0.05).CONCLUSION Group psychological and physical movement nursing for patients with PICC reduces venous thrombosis risk,improves psychological well-being,cancer-related fatigue,and physical function,making it highly prom

关键词： Group psychological nursing Physical movement nursing Peripherally inserted central catheter Gastric cancer Venous thrombosis Cancer-related fatigue

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Red blood cell distribution width to albumin ratio is correlated with prognosis of patients in coronary care unit

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World Journal of Cardiology 2025年第2期17卷 61-70页

作者： Jiao-ni Wang Ze-Song Hu Yong-wei Yu Xiao-Hui Peng Department of Diagnostic Ultrasound and Echocardiography Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina Department of Cardiology The Second Affiliated and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhou 312500Zhejiang ProvinceChina Intensive Care Unit The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND As red blood cell distribution width(RDW)and albumin have been shown to be independent predictors of mortality from various diseases,this study aimed to investigate the effect of the RDW to albumin ratio(RA)as an independent predictor of the prognosis of patients admitted to the coronary care unit(CCU).AIM To use the RDW and albumin level to predict the prognosis of patients in the *** Data were obtained from the Medical Information Mart Intensive Care III *** primary outcome was 365-day all-cause mortality,whereas the secondary outcomes were 30-and 90-day all-cause mortality,hospital length of stay(LOS),and CCU *** proportional hazards regression model,propen-sity score matching,and receiver operating characteristic curve analyses were *** The hazard ratio(95%confidence interval)of the upper tertile(RA>4.66)was 1.62(1.29 to 2.03)when compared with the reference(RAnical variables in the propensity score-matching *** trends were observed for the secondary outcomes of hospital and CCU *** operating characteristic curve analysis was performed by combining the RA and sequential organ failure assessment(SOFA)scores,and the C-statistic was higher than that of the SOFA scores(0.733 vs 0.702,P<0.001).CONCLUSION RA is an independent prognostic factor in patients admitted to the *** combined with the SOFA score can improve the predictive ability of the SOFA ***,our results should be verified in future prospective studies.

关键词： Red blood cell distribution width Albumin Prognosis Coronary care unit

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蝶翅花纹的演化发育生物学研究进展

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遗传 2025年第2期47卷 258-270页

作者：倪嘉欣张蔚北京大学蛋白质与植物基因研究国家重点实验室生命科学学院生命科学联合中心北京100871

演化发育生物学研究结合演化生物学和发育生物学,关注生物发育过程的演化及性状多样化的机制。自1984年同源异形盒基因被发现,许多模式生物形态建成的遗传机制获得了系统性研究;相对而言,非模式生物具有丰富而复杂的演化创新性状,然而... 详细信息

演化发育生物学研究结合演化生物学和发育生物学,关注生物发育过程的演化及性状多样化的机制。自1984年同源异形盒基因被发现,许多模式生物形态建成的遗传机制获得了系统性研究;相对而言,非模式生物具有丰富而复杂的演化创新性状,然而其背后的演化遗传机制尚未被完全解析,相关的研究亟待加强。在非模式生物类群中,蝶类具有丰富的物种多样性,超过18,700个物种;其翅结构相对简单但呈现出复杂多样的花纹,可能具有防御、求偶等多样的生物学功能,并受到较强的选择压力,因此是演化发育生物学研究的经典体系。聚焦蝶类的演化发育生物学研究历程,早期的比较形态学研究提出了蛱蝶平面图,为蝶翅花纹的演化发育生物学研究提供了理论框架;而之后一系列对蝶类翅盘的干扰实验则证实翅盘发育过程与蝶翅表型的关联;近年来的研究通过整合遗传学、发育生物学、基因组学等研究手段,已在多个蝶类研究体系对其重要的遗传工具包基因/基因座进行了解析,进一步完善了蝶翅花纹演化发育学研究的理论框架。从方法学角度,原位杂交和基因编辑等技术在开展上述研究中发挥了重要作用,而杂交链式反应技术和CRISPR/Cas9技术的发展则进一步提升了蝶类基因功能验证的可行性。在未来的研究中,可通过开发和优化适用于蝶类等鳞翅目昆虫的RNA干扰技术和基因编辑技术,推动更多的基因功能研究,进而比较和解析生物复杂性状,拓展演化发育生物学研究体系;上述研究还可拓展至生态-演化-发育角度,探索遗传和环境因素对以蝶翅花纹为代表的复杂表型的塑造机制,增进理解生物多样性形成和演化这一关键的科学问题。

关键词：蝶翅演化发育生物学遗传工具包原位杂交基因编辑

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In vivo self-assembled bispecific fluorescence probe for early detection of bladder cancer and metastasis

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Science Bulletin 2025年第3期70卷 407-418页

作者： Da-Yong Hou ni-Yuan Zhang Peng Zhang Xiang-Peng Li Jiong-Cheng Wu Mei-Yu Lv Zhi-Jia Wang Xing-Jie Hu Jian-Xiao Liang Hong-Lei Wang Yue-Ze Wang Hui-Hui You Hong-wei An Hao Wang Wanhai Xu NHC Key Laboratory of Molecular Probe and Targeted Theranostics Heilongjiang Key Laboratory of Scientific Research in UrologyHarbin Medical UniversityHarbin 150001China Department of PET-CT/MRI Harbin Medical University Cancer HospitalHarbin 150001China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST)Beijing 100190China

Tumor metastasis accounts for over 90%of tumor-related deaths,prompting the development of fluorescently labeled tumor-specific molecular imaging agents for differentiating tumors from normal ***,early detection of metastasis lesions by tracking tumor markers alone has proven to be ***,we reported a glycopeptide-based bispecific fluorescence probe(bsProbe)for earlier detection of bladder cancer and *** simultaneously recognition(tumor&tumor microenvironment)and in vivo self-assembly,the tumor accumulation of bsProbe(12.3%ID/g)was obviously increased by∼6 fold compared with that in CXCR4 specific fluorescence probe(sProbe),indicating the obvious advantages of bsProbe over existing tumor metastasis detection ***,bsProbe substantially broadens the tumor diagnosis window and enhances the detection signal to noise ratio(SNR:approximately 9.5),permitting early diagnosis of lung micro-metastasis(∼1 mm),precise identifying of tumor boundaries and micro-tumors in orthotopic tumor *** importantly,bsProbe was demonstrated to distinguish malignant from benign specimen with a specificity of 90.48%and sensitivity of 92.22%in 195 clinical specimens of bladder cancer *** together,this novel synergetic targeting(CD206×CXCR4)strategy provides an attractive method for earlier detection of bladder cancer and metastasis,which might be further extended to the imaging-guided surgery of clinical invisible tumors.

关键词： Self-assembly Peptide Nanomaterial Fluorescence imaging Bladder cancer

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