Showing 741 - 760 results of 816 for search '"Mr. ', query time: 0.05s Refine Results
  1. 741

    Subrings of I-rings and S-rings by Mamadou Sanghare

    Published 1997-01-01
    “…Throughout this paper all rings considered are associative rings with unity, and by a module M over a ring R we always understand a unitary left R-module. We use MR to emphasize that M is a unitary right R-module.…”
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  2. 742

    Synthesis and Characterization of Copper Ferrite Nanoparticles for Efficient Photocatalytic Degradation of Organic Dyes by Julia Mazurenko, A. K. Sijo, Larysa Kaykan, Volodymyr Kotsyubynsky, Łukasz Gondek, Antoni Zywczak, Mateusz Marzec, Oleksii Vyshnevskyi

    Published 2025-01-01
    “…Magnetization measurements revealed that the sample exhibited characteristic magnetic parameters of copper ferrite, with a saturation magnetization (Ms) of 23.10 emu/g, a coercivity Hc of 415 Oe, and a remnant magnetization (Mr) of 12.80 emu/g. These magnetic properties enable efficient magnetic separation of the nanoparticles from aqueous solutions, thereby enhancing process efficiency and minimizing catalyst loss during photocatalytic applications. …”
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  3. 743

    Assisted Parkinsonism Diagnosis Using Multimodal MRI—The Role of Clinical Insights by Tobias Meindl, Alexander Hapfelmeier, Tobias Mantel, Angela Jochim, Jonas Deppe, Silke Zwirner, Jan S. Kirschke, Yong Li, Bernhard Haslinger

    Published 2025-01-01
    “…Conclusion Machine‐learning‐assisted classification of MR‐imaging biomarkers gathered in routine care can assist in the diagnosis of parkinsonian syndromes as part of the diagnostic workup. …”
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  4. 744

    Intensity-Dependent Effects of Acute Exercise on Executive Function by Aylin Mehren, Cecilia Diaz Luque, Mirko Brandes, Alexandra P. Lam, Christiane M. Thiel, Alexandra Philipsen, Jale Özyurt

    Published 2019-01-01
    “…Furthermore, the association between exercise effects and cardiorespiratory fitness was examined. 64 participants performed in two executive function tasks (flanker and Go/No-go tasks), while functional MR images were collected, following two conditions: in the exercise condition, they cycled on an ergometer at either moderate or high intensity (each n=32); in the control condition, they watched a movie. …”
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  5. 745

    A systematic review and meta-analysis of prevalence of seven psychiatric disorders in India by Vikas Dhiman, Geetha R. Menon, Rajnarayan R. Tiwari

    Published 2023-11-01
    “…Materials and Methods: We performed a systematic bibliographic search in Pub Med, Global Health Data Exchange (GHDx), and Google Scholar, along with a manual search for peer-reviewed epidemiological studies reporting the prevalence of depression, AUD, AD, MR, suicidal attempt/death, autism, and BD in India from January 1980 till March 2022. …”
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  6. 746

    Case report: an unusual long-term evolution of a diffuse midline glioma, H3K27 altered by Michael Griessmair, Michael Griessmair, Claire Delbridge, Claus Zimmer, Eva Mayr, Arthur Wagner, Julian Canisius, Marie-Christin Metz, Benedikt Wiestler, Benedikt Wiestler

    Published 2025-02-01
    “…Molecular neuropathology revealed the diagnosis of diffuse midline glioma with a H3K27M mutation WHO (World Health Organization) CNS (central nervous system) grade 4. Interestingly, MR imaging conducted for migraine diagnosis 6 years ago in retrospect already showed a small, nodular T2w hyperintense lesion in the right thalamus.ConclusionDespite a more precise, molecularly driven classification of pediatric HGG (high-grade glioma) in the 5th edition of the WHO classification of CNS tumors, many genetic factors influencing the biological tumor development as well as the precise molecular evolution of tumors remain unclear. …”
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  7. 747

    Causal associations between iron levels in subcortical brain regions and psychiatric disorders: a Mendelian randomization study by Wei Du, Biqiu Tang, Senhao Liu, Wenjing Zhang, Su Lui

    Published 2025-01-01
    “…Utilizing two-sample Mendelian randomization (MR) analysis, this study investigates the causal associations between iron level changes in 16 subcortical nuclei and eight major psychiatric disorders, including schizophrenia (SCZ), major depressive disorder (MDD), autism spectrum disorders (ASD), attention-deficit/hyperactivity disorder, bipolar disorder, anxiety disorders, obsessive-compulsive disorder, and insomnia. …”
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  8. 748

    Establishment of Microwave Drying Dynamic Model for Foshou Leaves Powder and Analysis of Quality Characteristics by Hui SUN, Bo ZHANG, Jianghong ZHOU, Zhenyi XU, Zhixing MAO, Yuxiang WANG, Jie PANG

    Published 2025-02-01
    “…The most accurate fitting function determined was MR=(0.0011+0.0058X1+0.0037X2)t2−(0.086+0.1544X1+0.086X2)t+1. …”
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  9. 749
  10. 750

    In Vivo Structural and Functional Abnormalities of the Striatums Is Related to Decreased Astrocytic BDNF in Itpr2-/- Mice Exhibiting Depressive-Like Behavior by Shanmei Zeng, Kai Liu, Jingyu Zhang, Chunhui Chen, Yihua Xu, Yulan Wu, Yanjia Deng, Xuegang Sun, Ge Wen, Linlin Jing

    Published 2020-01-01
    “…By combining biochemistry and MR analyses, this study provides evidences to support that the Itpr2-related neuropathological effect is possibly mediated by the striatal abnormality associated with dysfunctional astrocytes in Itpr2-/- mice in vivo, thus may help us better understand underlying mechanisms of Itpr2 deficiency as well as its relation to depressive-like behavior.…”
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  11. 751

    Exploring the genetic correlation and causal relationships between breast cancer and meningioma using bidirectional Mendelian randomization by Lu Ding, Bo Chen, Zhou Zhou, Zhaojun Mei, Kan Cao, Xinyu Lu, Wei Chen

    Published 2025-02-01
    “…After rigorous screening and Mendelian randomization (MR) tests, genetically predicted overall BC (OR: 1.17, P = 0.0045) and ER(estrogen receptors) + BC (OR: 1.21, P = 0.0006) showed a potential causal association with intracranial meningioma. …”
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  12. 752
  13. 753

    Connectivity-Based Parcellation of the Cortical Mantle Using q-Ball Diffusion Imaging by Muriel Perrin, Yann Cointepas, Arnaud Cachia, Cyril Poupon, Bertrand Thirion, Denis Rivière, Pascal Cathier, Vincent El Kouby, André Constantinesco, Denis Le Bihan, Jean-François Mangin

    Published 2008-01-01
    “…This paper exploits the idea that each individual brain region has a specific connection profile to create parcellations of the cortical mantle using MR diffusion imaging. The parcellation is performed in two steps. …”
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  14. 754

    Radiomic prediction for durable response to high‐dose methotrexate‐based chemotherapy in primary central nervous system lymphoma by Haoyi Li, Mingming Xiong, Ming Li, Caixia Sun, Dao Zheng, Leilei Yuan, Qian Chen, Song Lin, Zhenyu Liu, Xiaohui Ren

    Published 2024-09-01
    “…For each patient, a total of 1218 radiomic features were extracted from prebiopsy T1 contrast‐enhanced MR images. Multiple machine‐learning algorithms were utilized for feature selection and classification to build a radiomic signature. …”
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  15. 755

    Echocardiography evaluation of iatrogenic atrial septal defect after combined procedure of catheter ablation and left atrial appendage closure for atrial fibrillation by Yu Xin Su, Sai Nan Li, Nan Nan Liu, Ming Liang, Zu Lu Wang, Ping Zhang, Qi Zhang, Wei Wei Zhou

    Published 2025-01-01
    “…Patients with iASD had larger left atrial volumes (76.5 ± 35.2 ml vs. 61.1 ± 21.9 ml, p = 0.036) as well as higher occurrence of mitral regurgitation (MR) (32.3% vs. 12.8%, p = 0.018) and tricuspid regurgitation (TR) (27.1% vs. 7.3%, p = 0.002). …”
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  16. 756

    Associations between lipid-lowering drugs and urate and gout outcomes: a Mendelian randomization study by Min Liu, Na Yin, Yuhang Zhu, Aili Du, Chunyuan Cai, Pengyuan Leng

    Published 2025-01-01
    “…These estimates were further refined through various approaches including MR-Egger, the weighted median method, simple and weighted models, and leave-one-out analyses to conduct sensitivity analyses.ResultThe analytical outcomes utilizing the IVW method indicated that inhibitors of HMGCR were correlated with an elevated risk of developing gout (IVW: OR [95%CI] = 1.25 [1.03, 1.46], p=0.0436), while PCSK9 inhibitors were linked to heightened levels of urate (IVW: OR [95%CI] = 1.06 [1.01,1.10], p=0.0167). …”
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  17. 757

    Global burden of neck pain and its gender and regional inequalities from 1990 - 2021: a comprehensive analysis from the Global Burden of Disease Study 2021 by Haifeng Wu, Yue Li, Congying Zou, Weidong Guo, Feng Han, Guoshun Huang, Lin Sun

    Published 2025-01-01
    “…The incidence and burden of neck pain were assessed using DisMod-MR 2.1. Data on incidence and years lived with disability (YLDs) rates per 100,000 people were obtained for countries, regions, ages, and sexes globally. …”
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  18. 758

    The causal relationship of cigarette smoking to metabolic disease risk and the possible mediating role of gut microbiota by Jingda Zhang, Lin Hou, Shanxiang Lei, Yan Li, Guogang Xu

    Published 2025-01-01
    “…Our future studies should consider conducting other ethnic groups MR analyses, particularly with larger sample sizes. …”
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  19. 759
  20. 760

    37例以孤立性头昏为表现的病毒性脑炎特点和误诊分析 by 周香雪, 钟威, 许少华

    Published 2025-01-01
    “…18.92%(7/37)患者脑电图慢波增多(AUC值:0.60)。13.51%(5/37)患者头MR表现为皮层肿胀(AUC值:0.60)。抗病毒治疗后患者的头昏等级下降(<italic>Z=</italic>-4.899<italic>,P&lt;</italic>0.001),平滑跟踪异常(<italic>Z=</italic>-4.583<italic>,P&lt;</italic>0.001)减少,CSF转化型淋巴细胞比例(<italic>t=</italic>4.281<italic>,P&lt;</italic>0.001)、大淋巴细胞比例下降(<italic>t=</italic>6.905<italic>,P&lt;</italic>0.001)。…”
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