LabID-base/OpenAlex-Afillation huggingface dataset:
Selective Electrocatalytic Reduction of Oxygen to Hydroxyl Radicals via a Three-Electron Pathway for Removing Pollutants
Year: 2025
Type: article
Language: en
Topic: Advanced oxidation water treatment
Authors and affiliations:
raw_author_name: Gaowei Zhang
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Laboratory of Beam Technology and Energy Materials, Advanced Institute of Natural Sciences
raw_author_name: Lanke Luo
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
raw_author_name: Sitong Zhou
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
raw_author_name: Haomin Jiang
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
raw_author_name: Xiaofang Zheng
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
raw_author_name: Lin Chen
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Laboratory of Beam Technology and Energy Materials, Advanced Institute of Natural Sciences
raw_author_name: Jie Wu
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Laboratory of Beam Technology and Energy Materials, Advanced Institute of Natural Sciences
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
raw_author_name: Peiyuan Su
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
raw_author_name: Bin Liao
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Laboratory of Beam Technology and Energy Materials, Advanced Institute of Natural Sciences
raw_author_name: Zemin Sun
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
raw_author_name: Liu Lin
raw_affiliation_strings: Beijing Normal University
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences
Department of Chemistry, Department of Physics, Faculty of Arts and Sciences, Beijing Normal University, Zhuhai 519087, China
Fibroblast heterogeneity in 2025
Year: 2025
Type: review
Language: en
Topic: Fibroblast Growth Factor Research
Authors and affiliations:
raw_author_name: Adam P. Croft
raw_affiliation_strings: Rheumatology Research Group, Department of Inflammation and Ageing, University of Birmingham, Birmingham, UK. a.p.croft@bham.ac.uk
Rheumatology Research Group, Department of Inflammation and Ageing, University of Birmingham, Birmingham, UK
raw_author_name: Annie Hackland
raw_affiliation_strings: Rheumatology Research Group, Department of Inflammation and Ageing, University of Birmingham, Birmingham, UK
Screening for liver disease in patients with diabetes: new standard of care?
Year: 2025
Type: article
Language: en
Topic: Liver Disease Diagnosis and Treatment
Authors and affiliations:
raw_author_name: Meena Iyer
raw_affiliation_strings: Baylor University Medical Center
Baylor University Medical Center, Dallas, Texas, USA
raw_author_name: Sumeet K. Asrani
raw_affiliation_strings: Baylor University Medical Center
Baylor University Medical Center, Dallas, Texas, USA
An Analysis of the Varying Percentage Composition of the Silver, Copper and Iron Elements in Naser al-Din Shah Qajar's Silver Qirans minted in Tabriz using Particle-induced X-ray Emission (PIXE)
Year: 2025
Type: article
Language: en
Topic: X-ray Spectroscopy and Fluorescence Analysis
Authors and affiliations:
raw_author_name: Javad Mousavi Dalini
raw_affiliation_strings: Shiraz University
Department of History, Shiraz University, Shiraz, Iran
raw_author_name: Zohre Jozi
raw_affiliation_strings: University of Sistan and Baluchestan
Department of Archaeology, University of Sistan and Baluchestan, Zahedan, Iran
raw_author_name: Mohammad Amin Saadat Mehr
raw_affiliation_strings: University of Mazandaran
Department of Archaeology, University of Mazandaran, Babolsar, Iran
Jean Paul Euzéby (1949–2025)
Year: 2025
Type: article
Language: en
Topic: Microbial Community Ecology and Physiology
Authors and affiliations:
raw_author_name: Aharon Oren
raw_affiliation_strings: The Institute of Life Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401 Jerusalem, Israel
raw_author_name: Markus Göker
raw_affiliation_strings: Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Inhoffenstrasse 7B, 38124 Braunschweig, Germany
raw_author_name: Edward R.B. Moore
raw_affiliation_strings: Department of Infectious Disease and Culture Collection University of Gothenburg (CCUG), Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, SE-402 34 Gothenburg, Sweden
Normalized solutions for p-Laplacian equations with critical Sobolev exponent and mixed nonlinearities
Year: 2025
Type: article
Language: en
Topic: Nonlinear Partial Differential Equations
Authors and affiliations:
raw_author_name: Shengbing Deng
raw_affiliation_strings: School of Mathematics and Statistics, Southwest University, Chongqing 400715, P. R. China
raw_author_name: Qiaoran Wu
raw_affiliation_strings: School of Mathematics and Statistics, Southwest University, Chongqing 400715, P. R. China
Beyond the mean: quantile-based insights into climate impacts on Arctic winter roads
Year: 2025
Type: article
Language: en
Topic: Climate change and permafrost
Authors and affiliations:
raw_author_name: Eugene Adjei
raw_affiliation_strings: School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK, Canada
raw_author_name: Fatma Ahmed
raw_affiliation_strings: School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK, Canada
raw_author_name: Oscar Zapata
raw_affiliation_strings: School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK, Canada
raw_author_name: Greg Poelzer
raw_affiliation_strings: School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK, Canada
Complexation and Characterization of Bhimkol ( <i>Musa balbisiana</i> ) Peel-Based Modified Dietary Fiber and Red Cabbage Anthocyanin for Food Application
Year: 2025
Type: article
Language: en
Topic: Phytochemicals and Antioxidant Activities
Authors and affiliations:
raw_author_name: Laxmi Kant Rawat
raw_affiliation_strings: Department of Food Engineering and Technology, School of Engineering
Tezpur University
Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam 784028, India
raw_author_name: Nurin Afzia
raw_affiliation_strings: Department of Food Engineering and Technology, School of Engineering
Tezpur University
Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam 784028, India
raw_author_name: Tabli Ghosh
raw_affiliation_strings: Department of Food Engineering and Technology, School of Engineering
Tezpur University
Department of Food Engineering and Technology, School of Engineering, Tezpur University, Assam 784028, India
Universality of Critical Exponents in Conducting Polymers
Year: 2025
Type: article
Language: en
Topic: Conducting polymers and applications
Authors and affiliations:
raw_author_name: Arya Mohan
raw_affiliation_strings: Department of Physics
Indian Institute of Science
Department of Physics, Indian Institute of Science, Bangalore 560012, India
raw_author_name: Reghu Menon
raw_affiliation_strings: Department of Physics
Indian Institute of Science
Department of Physics, Indian Institute of Science, Bangalore 560012, India
The Words Can Harm Scale: Measuring Beliefs About Harmful Speech
Year: 2025
Type: article
Topic: Educational Philosophies and Pedagogies
Authors and affiliations:
raw_author_name: Samuel Pratt
raw_affiliation_strings: University of North Carolina at Chapel Hill
raw_author_name: Payton J. Jones
raw_author_name: Benjamin W. Bellet
raw_author_name: Richard J. McNally
raw_affiliation_strings: Harvard University
raw_author_name: Kurt Gray
Methylomonas stagni sp. nov., a methanotroph of the genus Methylomonas, from a reservoir pond in Korea
Year: 2025
Type: article
Language: en
Topic: Microbial metabolism and enzyme function
Authors and affiliations:
raw_author_name: Joo-Han Gwak
raw_affiliation_strings: Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju 28644, Republic of Korea
Present address: Department of Life Science, Hallym University, Chuncheon 24252, Republic of Korea
raw_author_name: Chanmee Seo
raw_affiliation_strings: Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju 28644, Republic of Korea
raw_author_name: Yongman Kim
raw_affiliation_strings: Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju 28644, Republic of Korea
raw_author_name: Joong-Wook Park
raw_affiliation_strings: Department of Biological and Environmental Sciences, Troy University, Troy, AL 36082, USA
raw_author_name: Sung-Keun Rhee
raw_affiliation_strings: Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju 28644, Republic of Korea
Prefazione
Year: 2025
Type: article
Authors and affiliations:
raw_author_name: Sergia Adamo
raw_affiliation_strings: Università degli Studi di Trieste
raw_author_name: Leonardo Buonomo
raw_affiliation_strings: Università degli Studi di Trieste
raw_author_name: Roberta Gefter Wondrich
raw_affiliation_strings: Università degli Studi di Trieste
Identification and characterization of candidate inhibitors of the SARS-CoV-2 nsp14 3′-5′ exoribonuclease
Year: 2025
Type: article
Language: en
Topic: SARS-CoV-2 and COVID-19 Research
Authors and affiliations:
raw_author_name: Victoria Easton
raw_affiliation_strings: School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
raw_author_name: Martin J. McPhillie
raw_affiliation_strings: School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK
raw_author_name: Igor Andrade Santos
raw_affiliation_strings: Present address: The Pirbright Institute, Ash Road, Pirbright, Surrey, GU24 0NF, UK
School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
raw_author_name: Philippa Hall
raw_affiliation_strings: School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
raw_author_name: C. Patrick McClure
raw_affiliation_strings: Wolfson Centre for Global Virus Research, University of Nottingham, Nottingham, NG7 2UH, UK
raw_author_name: Stuart Astbury
raw_affiliation_strings: National Institute for Health Research Nottingham Biomedical Research Centre, University of Nottingham and Nottingham University Hospitals NHS Trust, Nottingham, NG7 2UH, UK
raw_author_name: Emanuelle Paci
raw_affiliation_strings: Present address: Department of Physics and Astronomy, University of Bologna, Viale Berti-Pichat 6/2, 40125 Bologna BO, Italy
School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
raw_author_name: Alexander St John
raw_affiliation_strings: Present address: Apoha, Nw Works Units 8 & 9, 135 Salusbury Rd, London NW6 6RJ, UK
School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
raw_author_name: Colin W.G. Fishwick
raw_affiliation_strings: School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK
raw_author_name: Mark Harris
raw_affiliation_strings: School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
Premedication with Lugol’s solution in total thyroidectomy for graves’ disease and toxic multinodular goiter: is it still indicated?
Year: 2025
Type: article
Language: en
Topic: Thyroid and Parathyroid Surgery
Authors and affiliations:
raw_author_name: D. Ciriotto
raw_affiliation_strings: Division of General Surgery, ASUGI, Cattinara Teaching Hospital, Trieste, Italy
Division of General Surgery, Department of Medicine, Surgery and Health Sciences, Cattinara Teaching Hospital, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy
raw_author_name: S. Bernardi
raw_affiliation_strings: Division of General Surgery, Department of Medicine, Surgery and Health Sciences, Cattinara Teaching Hospital, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy
SS Endocrinologia, UCO Medicina Clinica, ASUGI, Cattinara Teaching Hospital, Trieste, Italy
raw_author_name: R. Eramo
raw_affiliation_strings: Division of General Surgery, ASUGI, Cattinara Teaching Hospital, Trieste, Italy
raw_author_name: V. Calabrò
raw_affiliation_strings: SS Endocrinologia, UCO Medicina Clinica, ASUGI, Cattinara Teaching Hospital, Trieste, Italy
raw_author_name: A. Modica
raw_affiliation_strings: Division of General Surgery, ASUGI, Cattinara Teaching Hospital, Trieste, Italy
Division of General Surgery, Department of Medicine, Surgery and Health Sciences, Cattinara Teaching Hospital, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy
raw_author_name: N. de Manzini
raw_affiliation_strings: Division of General Surgery, ASUGI, Cattinara Teaching Hospital, Trieste, Italy
Division of General Surgery, Department of Medicine, Surgery and Health Sciences, Cattinara Teaching Hospital, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy
raw_author_name: C. Dobrinja
raw_affiliation_strings: Division of General Surgery, ASUGI, Cattinara Teaching Hospital, Trieste, Italy. chiara.dobrinja@units.it
Division of General Surgery, Department of Medicine, Surgery and Health Sciences, Cattinara Teaching Hospital, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy. chiara.dobrinja@units.it
Division of General Surgery, Department of Medicine, Surgery and Health Sciences, Cattinara Teaching Hospital, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy
Outcomes of Student Evaluations of Rural and Nonrural Medical Student Preceptors
Year: 2025
Type: article
Language: en
Topic: Innovations in Medical Education
Authors and affiliations:
raw_author_name: Elle Larson
raw_affiliation_strings: University of Washington School of Medicine, Seattle, WA
raw_author_name: Lars Ponsness
raw_affiliation_strings: University of Washington School of Medicine, Seattle, WA
raw_author_name: John McCarthy
raw_affiliation_strings: Department of Family Medicine, University of Washington School of Medicine, Seattle, WA
raw_author_name: Toby Keys
raw_affiliation_strings: Department of Family Medicine, University of Washington School of Medicine, Seattle, WA
STUDYING THE IMPACT OF THE 2015 EUROPEAN GAMES ON THE POPULARIZATION AND DEVELOPMENT OF MASS SPORTS IN AZERBAIJAN (IN THE CONTEXT OF THE TENTH ANNIVERSARY OF THIS SPORTING EVENT)
Year: 2025
Type: article
Topic: Sport and Mega-Event Impacts
Authors and affiliations:
raw_author_name: Rüfət Əkbərov
raw_affiliation_strings: Institute of Education of the Republic of Azerbaijan
Assessing the Pedestrian Infrastructure for Integrated Visual Walkability of KolkataMunicipal Corporation using Deep Learning based Geospatial Artificial Intelligence (Geo AI)
Year: 2025
Type: article
Language: en
Topic: Urban Transport and Accessibility
Authors and affiliations:
raw_author_name: Haimanti Ghose
raw_affiliation_strings: Department of Geography, School of Basic and Applied Sciences, Adamas University, Kolkata, West Bengal, India
raw_author_name: Anu Rai
raw_affiliation_strings: Department of Geography, School of Basic and Applied Sciences, Adamas University, West Bengal, India
From Challenges to Solutions: A Qualitative Thematic Analysis of Inter-hospital Transfer Processes
Year: 2025
Type: article
Language: en
Topic: Healthcare Operations and Scheduling Optimization
Authors and affiliations:
raw_author_name: James D. Harrison
raw_affiliation_strings: Division of Hospital Medicine, Department of Medicine, University of California, San Francisco, 521 Parnassus Avenue, Box 0131, San Francisco, CA, 94143, USA. james.harrison@ucsf.edu
Division of Hospital Medicine, Department of Medicine, University of California, San Francisco, 521 Parnassus Avenue, Box 0131, San Francisco, CA, 94143, USA
raw_author_name: Luci K. Leykum
raw_affiliation_strings: Dell Medical School, University of Texas at Austin, Austin, TX, USA
South Texas Veterans Health Care System, Department of Veterans Affairs, San Antonio, TX, USA
raw_author_name: Amy Yu
raw_affiliation_strings: Division of Hospital Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
raw_author_name: Caitlin Kelly
raw_affiliation_strings: Division of General Internal Medicine, Brigham and Women's Hospital, Boston, MA, USA
raw_author_name: Stephanie K. Mueller
raw_affiliation_strings: Division of General Internal Medicine, Brigham and Women's Hospital, Boston, MA, USA
Harvard Medical School, Boston, MA, USA
A Machine Learning-Driven Framework for Comparative Multi-Algorithm Classificationand Spatial Suitability Modelling of Saffron Cultivation in Pampore Karewas
Year: 2025
Type: article
Language: en
Topic: Saffron Plant Research Studies
Authors and affiliations:
raw_author_name: Chayanika Ghosh
raw_affiliation_strings: Symbiosis Institute of Geoinformatics, Symbiosis International (Deemed) University, Pune, India
raw_author_name: Neeta Nandgude
raw_affiliation_strings: Symbiosis Institute of Geoinformatics, Symbiosis International (Deemed) University, Pune, India
raw_author_name: Stutee Gupta
raw_affiliation_strings: National Remote Sensing Centre, Indian Space Research Organization, Hyderabad, India
raw_author_name: Tarun Pratap Singh
raw_affiliation_strings: Symbiosis Institute of Geoinformatics, Symbiosis International (Deemed) University, Pune, India
The Effects of Executive Incentives on Firm Performance in China the Moderating Role of Earnings Management
Year: 2025
Type: preprint
Topic: Auditing, Earnings Management, Governance
Authors and affiliations:
raw_author_name: Li Dingzhao
raw_affiliation_strings: Universiti Malaysia Perlis Sungai Chuchuh
raw_author_name: Hafizah Abdul Rahim
raw_affiliation_strings: Universiti Malaysia Perlis Sungai Chuchuh
raw_author_name: Aliana Shazma Amir Amir
raw_affiliation_strings: Universiti Malaysia Perlis Sungai Chuchuh
Um estudo sobre a LGPD: os impactos laborais que a nova legislação pode ocasionar para servidores da Universidade Federal de Sergipe
Year: 2025
Type: article
Topic: Academic Research in Diverse Fields
Authors and affiliations:
raw_author_name: Agenor José Ferreira Neto
raw_affiliation_strings: Universidade Federal de Sergipe
raw_author_name: Abimael Magno do Ouro Filho
raw_affiliation_strings: Universidade federal de Sergipe
Introduzione. Gli abitanti illegittimi della casa-letteratura
Year: 2025
Type: article
Topic: Historical and Environmental Studies
Authors and affiliations:
raw_author_name: Francesca D'Alessio
raw_affiliation_strings: Università di Udine e Trieste
raw_author_name: Iwan Paolini
raw_affiliation_strings: Università di Udine e Trieste
raw_author_name: Rachele Puddu
raw_affiliation_strings: Università di Udine e Trieste
raw_author_name: Alessandro Valenti
Caries adjacent to restorations: a bibliometric and altmetric analysis of the top 100 most cited article
Year: 2025
Type: article
Topic: Dental Health and Care Utilization
Authors and affiliations:
raw_author_name: Danielle Cristina Alves Rigo
raw_author_name: Aurélio de Oliveira Rocha
raw_author_name: Michely Cristina Goebel
raw_author_name: Lucas Menezes dos Anjos
raw_author_name: Isabela Ramos
raw_author_name: Julia Maldonado Garcia
raw_author_name: Gabriela Beatriz Rigo Wietzkoski
raw_author_name: Christiane Leite Cabral
raw_affiliation_strings: Dentistry Institution : Universidade do Sul de Santa Catarina (UNISUL) Address: Palhoa , Santa Catarina , Brazil
raw_author_name: Carla Miranda Santana
raw_affiliation_strings: Universidade Federal de Santa Catarina Address : Florianpolis , Santa Catarina , Brazil Doctor of Dentistry Institution :
raw_author_name: Mariane Cardoso
raw_affiliation_strings: Universidade Federal de Santa Catarina Address : Florianpolis , Santa Catarina , Brazil Doctor of Dentistry Institution :
A Review on Synergistic Effect of Insecticides and Plants Extracts against Gram Pod Borer Helicoverpa armigera Hubner (Lepidoptera: Noctuidae)
Year: 2025
Type: article
Topic: Agricultural pest management studies
Authors and affiliations:
raw_author_name: Jagdish M. Mankar
raw_affiliation_strings: Deogiri College, Chhatrapati Sambhajinagar (MH), India
raw_author_name: Bhimrao N. Jadhav
raw_affiliation_strings: Vinaykrao Patil College Vaijapur, Chhatrapati Sambhajinagar (MH), India
Maximized field-of-view deep-brain calcium imaging through gradient-index lenses
Year: 2025
Type: article
Topic: Random lasers and scattering media
Authors and affiliations:
raw_author_name: Chenmao Wang
raw_affiliation_strings: Bindley Bioscience Center, Purdue University, West Lafayette
School of Electrical and Computer Engineering, Purdue University, West Lafayette
raw_author_name: Zongyue Cheng
raw_affiliation_strings: Bindley Bioscience Center, Purdue University, West Lafayette
School of Electrical and Computer Engineering, Purdue University, West Lafayette
raw_author_name: Yuting Li
raw_affiliation_strings: Bindley Bioscience Center, Purdue University, West Lafayette
School of Electrical and Computer Engineering, Purdue University, West Lafayette
raw_author_name: Jianian Lin
raw_affiliation_strings: Bindley Bioscience Center, Purdue University, West Lafayette
School of Electrical and Computer Engineering, Purdue University, West Lafayette
raw_author_name: Meng Cui
raw_affiliation_strings: Bindley Bioscience Center, Purdue University, West Lafayette
Department of Biology, Purdue University, West Lafayette
School of Electrical and Computer Engineering, Purdue University, West Lafayette
Family Assessment Device Among Families with Stunted Children Under Five Years in Kadu Village, Tangerang
Year: 2025
Type: article
Topic: Child Nutrition and Water Access
Authors and affiliations:
raw_author_name: Catharina Guinda Diannita
raw_affiliation_strings: Faculty of Nursing, Universitas Pelita Harapan
raw_author_name: Evanny Indah Manurung
raw_affiliation_strings: Faculty of Nursing, Universitas Pelita Harapan
raw_author_name: Martina Pakpahan
raw_affiliation_strings: Faculty of Nursing, University of Pelita Harapan