LabID-base/OpenAlex-Afillation huggingface dataset:
Cross-species standardised cortico-subcortical tractography
Year: 2025
Type: article
Language: en
Topic: Advanced Neuroimaging Techniques and Applications
Authors and affiliations:
raw_author_name: Stephania Assimopoulos
raw_affiliation_strings: Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham
raw_author_name: Shaun Warrington
raw_affiliation_strings: Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham
raw_author_name: Davide Folloni
raw_affiliation_strings: Lipschultz Center for Cognitive Neuroscience, Icahn School of Medicine at Mount Sinai
Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai
raw_author_name: Katherine Bryant
raw_affiliation_strings: Centre de Recherche en Psychologie et Neurosciences, UMR 7077, CNRS/Université Aix-Marseille
Institute for Language, Cognition, and the Brain, CNRS, Université Aix-Marseille
raw_author_name: Ali-Reza Mohammadi-Nejad
raw_affiliation_strings: NIHR Nottingham Biomedical Research Centre, Queen’s Medical Centre, University of Nottingham
Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham
raw_author_name: Wei Tang
raw_affiliation_strings: Luddy School of Informatics, Computing and Engineering, Indiana University Bloomington
raw_author_name: Saad Jbabdi
raw_affiliation_strings: Oxford Centre for Integrative Neuroimaging, University of Oxford
raw_author_name: Sarah R Heilbronner
raw_affiliation_strings: Baylor College of Medicine
raw_author_name: Rogier B Mars
raw_affiliation_strings: Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen
Oxford Centre for Integrative Neuroimaging, University of Oxford
raw_author_name: Stamatios N Sotiropoulos
raw_affiliation_strings: NIHR Nottingham Biomedical Research Centre, Queen’s Medical Centre, University of Nottingham
Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham
High throughput quantitative tracking of <i>Plasmodium falciparum</i> clonal blood stage parasite growth and applications for antimalarial drug discovery
Year: 2025
Type: preprint
Language: en
Topic: Malaria Research and Control
Authors and affiliations:
raw_author_name: Zhe Cheng
raw_affiliation_strings: Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, USA
Department of Cellular Biology, University of Georgia, Athens, GA, USA
raw_author_name: Liyang Ru
raw_affiliation_strings: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, USA
raw_author_name: Andrew Hoang
raw_affiliation_strings: Department of Cellular Biology, University of Georgia, Athens, GA, USA
raw_author_name: Mingyu Wang
raw_affiliation_strings: Institute of Bioinformatics, University of Georgia, Athens, GA, USA
raw_author_name: Suryanarayana Ganjikunta
raw_affiliation_strings: Department of Cellular Biology, University of Georgia, Athens, GA, USA
raw_author_name: Steven P. Maher
raw_affiliation_strings: Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, USA
raw_author_name: Dennis E. Kyle
raw_affiliation_strings: Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, USA
Department of Cellular Biology, University of Georgia, Athens, GA, USA
Department of Infectious Diseases, University of Georgia, Athens, GA, USA
Clinical and Microbial Features of Granulomatous Mastitis: Comparative Analysis of Breast and Gut Microbiota
Year: 2025
Type: article
Language: en
Topic: Breast Lesions and Carcinomas
Authors and affiliations:
raw_author_name: Turgay Şimşek
raw_affiliation_strings: Department of General Surgery, Kocaeli University Faculty of Medicine
raw_author_name: Mehmet Fatih Özsaray
raw_affiliation_strings: Department of General Surgery, Kocaeli University Faculty of Medicine
raw_author_name: Sümeyye Şahin
raw_affiliation_strings: Department of Medical Biology and Genetics, Kocaeli University Faculty of Medicine
raw_author_name: Deniz Sünnetçi Akkoyunlu
raw_affiliation_strings: Department of Medical Biology and Genetics, Kocaeli University Faculty of Medicine
raw_author_name: Naci Çine
raw_affiliation_strings: Department of Medical Biology and Genetics, Kocaeli University Faculty of Medicine
raw_author_name: Nuh Zafer Cantürk
raw_affiliation_strings: Department of General Surgery, Kocaeli University Faculty of Medicine
Development of Long-Term Human Adipocyte Organoids Manifesting Aging in Response to Intermittent Hypoxia
Year: 2025
Type: preprint
Language: en
Topic: Adipose Tissue and Metabolism
Authors and affiliations:
raw_author_name: Yunzhou Dong
raw_affiliation_strings: Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902
Mayo Clinic
raw_author_name: Jingjing Wang
raw_affiliation_strings: Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902
Mayo Clinic
raw_author_name: Feifei Feng
raw_affiliation_strings: Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902
Mayo Clinic
raw_author_name: Isra H. Ali
raw_affiliation_strings: Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902
Mayo Clinic
raw_author_name: Shahid Karim
raw_affiliation_strings: Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902
Mayo Clinic
raw_author_name: Joshua Bock
raw_affiliation_strings: Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902
Mayo Clinic
raw_author_name: Virend K. Somers
raw_affiliation_strings: Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902
Mayo Clinic
Melatonin Alleviates Diquat-Induced Acute Liver Injury by Inhibiting Oxidative Stress and Ferroptosis via Activation of the Nrf2/HO-1 Pathway
Year: 2025
Type: preprint
Topic: Paraquat toxicity studies and treatments
Authors and affiliations:
raw_author_name: Lei Xia
raw_affiliation_strings: Tianjin Medical University General Hospital
raw_author_name: GuangHe Liu
raw_affiliation_strings: First People's Hospital of Tai'an
raw_author_name: Yunpeng Duan
raw_affiliation_strings: Tianjin Medical University General Hospital
raw_author_name: Yuxin Dong
raw_affiliation_strings: Tianjin Medical University General Hospital
raw_author_name: Fang Chen
raw_affiliation_strings: Tianjin Medical University General Hospital
raw_author_name: Ziang Li
raw_affiliation_strings: Huazhong University of Science and Technology
raw_author_name: Yancun Liu
raw_affiliation_strings: Tianjin Medical University General Hospital
raw_author_name: Songtao Shou
raw_affiliation_strings: Tianjin Medical University General Hospital
Méndez Guerrero, Beatriz (2024): &lt;i&gt;El silencio en la comunicación multimodal en español, Granada: Comares&lt;/i&gt;, 116 pp. ISBN 978-84-1369-641-6
Year: 2025
Type: article
Topic: Health, Education, and Physical Culture
Authors and affiliations:
raw_author_name: Mª Azucena Penas Ibáñez
raw_affiliation_strings: Universidad Autónoma de Madrid
Neurocognitive processes in Chinese-to-English consecutive interpreting under high and low cognitive load: an ERP study
Year: 2025
Type: article
Language: en
Topic: Interpreting and Communication in Healthcare
Authors and affiliations:
raw_author_name: Jin Xue
raw_affiliation_strings: Beijing Institute of Technology
raw_author_name: Xin Zuo
raw_affiliation_strings: Tsinghua University High School-Guanghua
University of Science and Technology Beijing
raw_author_name: Guangpu Chen
raw_affiliation_strings: University of Science and Technology Beijing
Chained dynamic reconfiguration optimization for nonuniform shield propulsion system layouts and thrust fluctuation stability evaluation methodology
Year: 2025
Type: article
Language: en
Topic: Tunneling and Rock Mechanics
Authors and affiliations:
raw_author_name: Kongshu Deng
raw_affiliation_strings: School of Mechanical Engineering, HNUST, Xiangtan City, China
raw_author_name: Yongsheng Lin
raw_affiliation_strings: School of Mechanical Engineering, HNUST, Xiangtan City, China
raw_author_name: Yuanyuan Li
raw_affiliation_strings: Qi Baishi School of Art, HNUST, Xiangtan City, China
raw_author_name: Yilong Hu
raw_affiliation_strings: Xiaoxiang College, HNUST, Xiangtan City, China
raw_author_name: Shang Jiang
raw_affiliation_strings: School of Mechanical Engineering, HNUST, Xiangtan City, China
raw_author_name: Wei Huang
raw_affiliation_strings: School of Mechanical Engineering, HNUST, Xiangtan City, China
Hydrogel formation via conjugated polymer-polyvinyl alcohol complexation for protein encapsulation
Year: 2025
Type: article
Language: en
Topic: Hydrogels: synthesis, properties, applications
Authors and affiliations:
raw_author_name: Jingbo Dai
raw_affiliation_strings: School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China
raw_author_name: Zhubin Liu
raw_affiliation_strings: School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China
raw_author_name: Donglai Tian
raw_affiliation_strings: School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China
raw_author_name: Yanchen Deng
raw_affiliation_strings: School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China
raw_author_name: Aiguo Hu
raw_affiliation_strings: School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China
KSR1 is a scaffold for the Hippo signaling pathway
Year: 2025
Type: article
Language: en
Topic: Hippo pathway signaling and YAP/TAZ
Authors and affiliations:
raw_author_name: Samar Sayedyahossein
raw_affiliation_strings: Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA. samaryahossein@vtc.vt.edu
Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA
raw_author_name: Mohammed Rizwan Babu Sait
raw_affiliation_strings: Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA
raw_author_name: Zhigang Li
raw_affiliation_strings: Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA
raw_author_name: Riddhi Banerjee
raw_affiliation_strings: Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA
raw_author_name: Andy Tran
raw_affiliation_strings: Confocal Microscopy Core Facility, Laboratory of Cancer Biology and Genetics, NCI, National Institutes of Health, Bethesda, MD, USA
raw_author_name: Louise Thines
raw_affiliation_strings: Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA
raw_author_name: Mehdi Karimi
raw_affiliation_strings: Department of Mathematics, Illinois State University, Normal, IL, USA
raw_author_name: Mehrnoosh Bahmani
raw_affiliation_strings: Department of Physics and Chemistry, Illinois State University, Normal, IL, USA
raw_author_name: Naomi Mishan
raw_affiliation_strings: Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada
raw_author_name: Pooya Borzou
raw_affiliation_strings: Department of Electrical and Computer Engineering, Isfahan University of Technology, Isfahan, Iran
raw_author_name: Sergio A. Hassan
raw_affiliation_strings: Bioinformatics and Computational Biosciences Branch, OCICB, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health, Bethesda, MD, USA
raw_author_name: David B. Sacks
raw_affiliation_strings: Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA. sacksdb@mail.nih.gov
Department of Laboratory Medicine, National Institutes of Health, Bethesda, MD, USA
Identification of novel molecular subtypes in ovarian cancer <i>via</i> zinc homeostasis-related genes and their prognostic and immune landscape implications
Year: 2025
Type: article
Language: en
Topic: Trace Elements in Health
Authors and affiliations:
raw_author_name: Mengyu Lyu
raw_affiliation_strings: Pharmacy Department, Shaoxing Second Hospital, Yuecheng District, Shaoxing 312000, Zhejiang, China
raw_author_name: Miao Qiu
raw_affiliation_strings: Department of Tumor Radiotherapy, Shaoxing Second Hospital, Yuecheng District, Shaoxing 312000, Zhejiang, China
Cholinium-based eutectogel electrode for high-quality dynamic EEG/ECG monitoring exceeding 48 hours
Year: 2025
Type: article
Language: en
Topic: Advanced Sensor and Energy Harvesting Materials
Authors and affiliations:
raw_author_name: Weiguang Wang
raw_affiliation_strings: School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Guangyuan Xu
raw_affiliation_strings: School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Kai Huang
raw_affiliation_strings: State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Chuantian Ren
raw_affiliation_strings: State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Yufeng Wu
raw_affiliation_strings: State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Yiqian Zhou
raw_affiliation_strings: State Key Laboratory of New Ceramic Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
raw_author_name: Zekun Cheng
raw_affiliation_strings: State Key Laboratory of New Ceramic Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
raw_author_name: Shuling Zhang
raw_affiliation_strings: School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Hongwei Li
raw_affiliation_strings: School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Chen Yang
raw_affiliation_strings: School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Lu Yang
raw_affiliation_strings: School of Intelligent Engineering and Automation, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Shibiao Xu
raw_affiliation_strings: School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Yong Liu
raw_affiliation_strings: School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Ming Lei
raw_affiliation_strings: State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China
raw_author_name: Hui Wu
raw_affiliation_strings: State Key Laboratory of New Ceramic Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Consideraciones sobre el «acto de habla interaccional» como punto de emergencia de significado
Year: 2025
Type: article
Topic: Health, Education, and Physical Culture
Authors and affiliations:
raw_author_name: Raquel García River´ón (†)
raw_affiliation_strings: Universidad de La Habana (Cuba)
raw_author_name: Albina Sarymsakova
raw_affiliation_strings: Universidade da Coruña (España)
raw_author_name: Adriana Pedrosa Ramírez
raw_affiliation_strings: Universidad Central «Marta Abreu» de Las Villas (Cuba)
raw_author_name: Esperanza Morales López
raw_affiliation_strings: Universidad de A Coruña (España)
Regional disparities in cerebral perfusion and brain tissue microstructure damage in adult patients with Moyamoya syndrome
Year: 2025
Type: article
Language: en
Topic: Moyamoya disease diagnosis and treatment
Authors and affiliations:
raw_author_name: Lingyun Gao
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Xiaoli Wang
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Yuge Chen
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Jingxuan Ning
raw_affiliation_strings: Jining Medical University Clinical Medical College, Jining, China
raw_author_name: Zhen Chong
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Deguo Liu
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Jiehuan Wang
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Hao Yu
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Yueqin Chen
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
raw_author_name: Man Wang
raw_affiliation_strings: Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China. sesame201012@126.com
Department of Radiology, Affiliated Hospital of Jining Medical University, Jining, China
Final species and habitat distributions for current and future state
Year: 2025
Type: article
Language: en
Topic: Species Distribution and Climate Change
Authors and affiliations:
raw_author_name: Sara Si-Moussi
raw_affiliation_strings: CNRS, Grenoble, France
raw_author_name: Marianne Tzivanopoulos
raw_affiliation_strings: CNRS, Grenoble, France
raw_author_name: Gabrielle Deschamps
raw_affiliation_strings: LECA, Grenoble, France
raw_author_name: Maxime Hoareau
raw_affiliation_strings: CNRS, Grenoble, France
raw_author_name: Julien Renaud
raw_affiliation_strings: CNRS, Grenoble, France
raw_author_name: Rémi Lemaire-Patin
raw_affiliation_strings: INRAE, Bordeaux, France
raw_author_name: Wilfried Thuiller
raw_affiliation_strings: CNRS, Grenoble, France
Research progress of cellulose electrolyte materials
Year: 2025
Type: article
Language: en
Topic: Advanced Battery Materials and Technologies
Authors and affiliations:
raw_author_name: Zhipeng Yan
raw_affiliation_strings: State Key Laboratory of Green Papermaking and resource recycling, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
raw_author_name: Chao Gao
raw_affiliation_strings: Shandong Open University, Jinan, 250014, China
State Key Laboratory of Green Papermaking and resource recycling, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
raw_author_name: Xia Meng
raw_affiliation_strings: State Key Laboratory of Green Papermaking and resource recycling, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
raw_author_name: Zhongming Liu
raw_affiliation_strings: State Key Laboratory of Green Papermaking and resource recycling, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
raw_author_name: Magdi E. Gibril
raw_affiliation_strings: State Key Laboratory of Green Papermaking and resource recycling, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
raw_author_name: Shoujuan Wang
raw_affiliation_strings: State Key Laboratory of Green Papermaking and resource recycling, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
raw_author_name: Fangong Kong
raw_affiliation_strings: State Key Laboratory of Green Papermaking and resource recycling, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
Correction: Exploring the Role of Volunteer Organizations in Developing Italy&amp;rsquo;s Community-Based Care Model
Year: 2025
Type: article
Language: en
Topic: Nonprofit Sector and Volunteering
Authors and affiliations:
raw_author_name: Federico De Luca
raw_affiliation_strings: Department of Management Engineering, Department of Design, Politecnico di Milano, Milan, Italy
raw_author_name: Giuliana Costa
raw_affiliation_strings: Department of Architecture and Urban Studies, Politecnico di Milano, Milan, Italy
raw_author_name: Cristina Masella
raw_affiliation_strings: Department of Management Engineering, Politecnico di Milano, Milan, Italy
Electrochemically integrated 2D borophene–graphene architectures for energy and antimicrobial applications
Year: 2025
Type: article
Language: en
Topic: Boron and Carbon Nanomaterials Research
Authors and affiliations:
raw_author_name: Ravi Ranjan Pandey
raw_affiliation_strings: Department of Chemistry, Mahatma Gandhi Central University, East-Champaran, Motihari, Bihar, India 845401
raw_author_name: Himani Pandey
raw_affiliation_strings: Department of Biotechnology, Mahatma Gandhi Central University, East-Champaran, Motihari, Bihar, India 845401
raw_author_name: Anshu Andola
raw_affiliation_strings: Department of Chemistry, Mahatma Gandhi Central University, East-Champaran, Motihari, Bihar, India 845401
raw_author_name: Divyesh Joshi
raw_affiliation_strings: Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, School of Medicine, Yale University, New Haven, CT, USA
raw_author_name: Misao Fujii
raw_affiliation_strings: Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan
raw_author_name: Anand Prakash
raw_affiliation_strings: Department of Biotechnology, Mahatma Gandhi Central University, East-Champaran, Motihari, Bihar, India 845401
raw_author_name: Hideyuki Nakanishi
raw_affiliation_strings: Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan
Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan
raw_author_name: Rakesh K. Pandey
raw_affiliation_strings: Department of Chemistry, Mahatma Gandhi Central University, East-Champaran, Motihari, Bihar, India 845401
Martí-Sánchez, Manuel y Motoko Hirai  (2024): &lt;i&gt;Comunicación intercultural y fracasos comunicativos. Un estudio de caso: españoles y japoneses estudiantes de ELE&lt;/i&gt;, Pamplona: Ediciones Universidad de Navarra (EUNSA), 291 págs. ISBN 978-84-313-3941-8
Year: 2025
Type: article
Topic: Health, Education, and Physical Culture
Authors and affiliations:
raw_author_name: Ana María Ruiz Martínez
raw_affiliation_strings: Universidad de Alcalá