Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2082832309', 'doi': 'https://doi.org/10.1016/s0960-8524(01)00110-9', 'title': 'Effect of pH on hydrogen production from glucose by a mixed culture', 'display_name': 'Effect of pH on hydrogen production from glucose by a mixed culture', 'publication_year': 2002, 'publication_date': '2002-03-01', 'ids': {'openalex': 'https://openalex.org/W2082832309', 'doi': 'https://doi.org/10.1016/s0960-8524(01)00110-9', 'mag': '2082832309', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/11858207'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s0960-8524(01)00110-9', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S21442059', 'display_name': 'Bioresource Technology', 'issn_l': '0960-8524', 'issn': ['0960-8524', '1873-2976'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5111694813', 'display_name': 'Herbert H. P. Fang', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I889458895', 'display_name': 'University of Hong Kong', 'ror': 'https://ror.org/02zhqgq86', 'country_code': 'HK', 'type': 'education', 'lineage': ['https://openalex.org/I889458895']}], 'countries': ['HK'], 'is_corresponding': False, 'raw_author_name': 'Herbert H.P. Fang', 'raw_affiliation_strings': ['Centre for Environmental Engineering Research, Department of Civil Engineering, University of Hong Kong.'], 'affiliations': [{'raw_affiliation_string': 'Centre for Environmental Engineering Research, Department of Civil Engineering, University of Hong Kong.', 'institution_ids': ['https://openalex.org/I889458895']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5001369345', 'display_name': 'Liu Hong', 'orcid': 'https://orcid.org/0000-0003-0308-5049'}, 'institutions': [{'id': 'https://openalex.org/I889458895', 'display_name': 'University of Hong Kong', 'ror': 'https://ror.org/02zhqgq86', 'country_code': 'HK', 'type': 'education', 'lineage': ['https://openalex.org/I889458895']}], 'countries': ['HK'], 'is_corresponding': False, 'raw_author_name': 'Hong Liu', 'raw_affiliation_strings': ['Centre for Environmental Engineering Research, Department of Civil Engineering, University of Hong Kong, Pokfulam Road, Hong Kong'], 'affiliations': [{'raw_affiliation_string': 'Centre for Environmental Engineering Research, Department of Civil Engineering, University of Hong Kong, Pokfulam Road, Hong Kong', 'institution_ids': ['https://openalex.org/I889458895']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 4740, 'currency': 'USD', 'value_usd': 4740, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 59.367, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 1014, 'citation_normalized_percentile': {'value': 0.999817, 'is_in_top_1_percent': True, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 99, 'max': 100}, 'biblio': {'volume': '82', 'issue': '1', 'first_page': '87', 'last_page': '93'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10284', 'display_name': 'Anaerobic Digestion and Biogas Production', 'score': 0.9993, 'subfield': {'id': 'https://openalex.org/subfields/2215', 'display_name': 'Building and Construction'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10284', 'display_name': 'Anaerobic Digestion and Biogas Production', 'score': 0.9993, 'subfield': {'id': 'https://openalex.org/subfields/2215', 'display_name': 'Building and Construction'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10932', 'display_name': 'Microbial Metabolic Engineering and Bioproduction', 'score': 0.9964, 'subfield': {'id': 'https://openalex.org/subfields/1312', 'display_name': 'Molecular Biology'}, 'field': {'id': 'https://openalex.org/fields/13', 'display_name': 'Biochemistry, Genetics and Molecular Biology'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T10564', 'display_name': 'Wastewater Treatment and Nitrogen Removal', 'score': 0.9917, 'subfield': {'id': 'https://openalex.org/subfields/2310', 'display_name': 'Pollution'}, 'field': {'id': 'https://openalex.org/fields/23', 'display_name': 'Environmental Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/biogas', 'display_name': 'Biogas', 'score': 0.63552755}, {'id': 'https://openalex.org/keywords/dark-fermentation', 'display_name': 'Dark fermentation', 'score': 0.4973834}, {'id': 'https://openalex.org/keywords/hydraulic-retention-time', 'display_name': 'Hydraulic retention time', 'score': 0.44143528}], 'concepts': [{'id': 'https://openalex.org/C2776979534', 'wikidata': 'https://www.wikidata.org/wiki/Q193213', 'display_name': 'Butyrate', 'level': 3, 'score': 0.69517076}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.6830653}, {'id': 'https://openalex.org/C147455438', 'wikidata': 'https://www.wikidata.org/wiki/Q1057706', 'display_name': 'Effluent', 'level': 2, 'score': 0.6795393}, {'id': 'https://openalex.org/C198549448', 'wikidata': 'https://www.wikidata.org/wiki/Q857463', 'display_name': 'Temperature gradient gel electrophoresis', 'level': 4, 'score': 0.6746306}, {'id': 'https://openalex.org/C75212476', 'wikidata': 'https://www.wikidata.org/wiki/Q171076', 'display_name': 'Biogas', 'level': 2, 'score': 0.63552755}, {'id': 'https://openalex.org/C31903555', 'wikidata': 'https://www.wikidata.org/wiki/Q1637030', 'display_name': 'Food science', 'level': 1, 'score': 0.52834755}, {'id': 'https://openalex.org/C170603348', 'wikidata': 'https://www.wikidata.org/wiki/Q5223512', 'display_name': 'Dark fermentation', 'level': 5, 'score': 0.4973834}, {'id': 'https://openalex.org/C1124016', 'wikidata': 'https://www.wikidata.org/wiki/Q864917', 'display_name': 'Biohydrogen', 'level': 4, 'score': 0.49164397}, {'id': 'https://openalex.org/C202189072', 'wikidata': 'https://www.wikidata.org/wiki/Q1929999', 'display_name': 'Hydrogen production', 'level': 3, 'score': 0.4715816}, {'id': 'https://openalex.org/C523546767', 'wikidata': 'https://www.wikidata.org/wiki/Q10876', 'display_name': 'Bacteria', 'level': 2, 'score': 0.46876734}, {'id': 'https://openalex.org/C84250820', 'wikidata': 'https://www.wikidata.org/wiki/Q3030793', 'display_name': 'Hydraulic retention time', 'level': 3, 'score': 0.44143528}, {'id': 'https://openalex.org/C512968161', 'wikidata': 'https://www.wikidata.org/wiki/Q556', 'display_name': 'Hydrogen', 'level': 2, 'score': 0.39231026}, {'id': 'https://openalex.org/C43617362', 'wikidata': 'https://www.wikidata.org/wiki/Q170050', 'display_name': 'Chromatography', 'level': 1, 'score': 0.3802808}, {'id': 'https://openalex.org/C55493867', 'wikidata': 'https://www.wikidata.org/wiki/Q7094', 'display_name': 'Biochemistry', 'level': 1, 'score': 0.36711696}, {'id': 'https://openalex.org/C100544194', 'wikidata': 'https://www.wikidata.org/wiki/Q41760', 'display_name': 'Fermentation', 'level': 2, 'score': 0.24158305}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.22927088}, {'id': 'https://openalex.org/C42062724', 'wikidata': 'https://www.wikidata.org/wiki/Q1209205', 'display_name': '16S ribosomal RNA', 'level': 3, 'score': 0.20588106}, {'id': 'https://openalex.org/C178790620', 'wikidata': 'https://www.wikidata.org/wiki/Q11351', 'display_name': 'Organic chemistry', 'level': 1, 'score': 0.14641008}, {'id': 'https://openalex.org/C548081761', 'wikidata': 'https://www.wikidata.org/wiki/Q180388', 'display_name': 'Waste management', 'level': 1, 'score': 0.13573495}, {'id': 'https://openalex.org/C18903297', 'wikidata': 'https://www.wikidata.org/wiki/Q7150', 'display_name': 'Ecology', 'level': 1, 'score': 0.06432238}, {'id': 'https://openalex.org/C54355233', 'wikidata': 'https://www.wikidata.org/wiki/Q7162', 'display_name': 'Genetics', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C127413603', 'wikidata': 'https://www.wikidata.org/wiki/Q11023', 'display_name': 'Engineering', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C104317684', 'wikidata': 'https://www.wikidata.org/wiki/Q7187', 'display_name': 'Gene', 'level': 2, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D005947', 'descriptor_name': 'Glucose', 'qualifier_ui': 'Q000378', 'qualifier_name': 'metabolism', 'is_major_topic': True}, {'descriptor_ui': 'D006859', 'descriptor_name': 'Hydrogen', 'qualifier_ui': 'Q000378', 'qualifier_name': 'metabolism', 'is_major_topic': True}, {'descriptor_ui': 'D012722', 'descriptor_name': 'Sewage', 'qualifier_ui': 'Q000382', 'qualifier_name': 'microbiology', 'is_major_topic': True}, {'descriptor_ui': 'D000438', 'descriptor_name': 'Alcohols', 'qualifier_ui': 'Q000378', 'qualifier_name': 'metabolism', 'is_major_topic': False}, {'descriptor_ui': 'D000438', 'descriptor_name': 'Alcohols', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D001419', 'descriptor_name': 'Bacteria', 'qualifier_ui': 'Q000378', 'qualifier_name': 'metabolism', 'is_major_topic': False}, {'descriptor_ui': 'D001419', 'descriptor_name': 'Bacteria', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D018533', 'descriptor_name': 'Biomass', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D019149', 'descriptor_name': 'Bioreactors', 'qualifier_ui': 'Q000382', 'qualifier_name': 'microbiology', 'is_major_topic': False}, {'descriptor_ui': 'D019149', 'descriptor_name': 'Bioreactors', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005232', 'descriptor_name': 'Fatty Acids, Volatile', 'qualifier_ui': 'Q000378', 'qualifier_name': 'metabolism', 'is_major_topic': False}, {'descriptor_ui': 'D005232', 'descriptor_name': 'Fatty Acids, Volatile', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005285', 'descriptor_name': 'Fermentation', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005947', 'descriptor_name': 'Glucose', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006859', 'descriptor_name': 'Hydrogen', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006863', 'descriptor_name': 'Hydrogen-Ion Concentration', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012722', 'descriptor_name': 'Sewage', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s0960-8524(01)00110-9', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S21442059', 'display_name': 'Bioresource Technology', 'issn_l': '0960-8524', 'issn': ['0960-8524', '1873-2976'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/11858207', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'score': 0.67, 'display_name': 'Clean water and sanitation', 'id': 'https://metadata.un.org/sdg/6'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 41, 'referenced_works': ['https://openalex.org/W1519404008', 'https://openalex.org/W1523022390', 'https://openalex.org/W1532479482', 'https://openalex.org/W1587562419', 'https://openalex.org/W1856219842', 'https://openalex.org/W1882725683', 'https://openalex.org/W1963689733', 'https://openalex.org/W1967184988', 'https://openalex.org/W1968727340', 'https://openalex.org/W1971730626', 'https://openalex.org/W1982795318', 'https://openalex.org/W1988908295', 'https://openalex.org/W1989023719', 'https://openalex.org/W1997678562', 'https://openalex.org/W2002391765', 'https://openalex.org/W2006678317', 'https://openalex.org/W2012320890', 'https://openalex.org/W2024330635', 'https://openalex.org/W2025283848', 'https://openalex.org/W2026476601', 'https://openalex.org/W2032514113', 'https://openalex.org/W2043227853', 'https://openalex.org/W2052293468', 'https://openalex.org/W2063412565', 'https://openalex.org/W2064598599', 'https://openalex.org/W2071209389', 'https://openalex.org/W2072447052', 'https://openalex.org/W2075144113', 'https://openalex.org/W2080067821', 'https://openalex.org/W2086227448', 'https://openalex.org/W2091395128', 'https://openalex.org/W2099317513', 'https://openalex.org/W2145166062', 'https://openalex.org/W2164988062', 'https://openalex.org/W2167404121', 'https://openalex.org/W2312691188', 'https://openalex.org/W2415103511', 'https://openalex.org/W4205380813', 'https://openalex.org/W4230517390', 'https://openalex.org/W4234015842', 'https://openalex.org/W4253409840'], 'related_works': ['https://openalex.org/W73688584', 'https://openalex.org/W4388645667', 'https://openalex.org/W4289976273', 'https://openalex.org/W4244823521', 'https://openalex.org/W4220753816', 'https://openalex.org/W2955370566', 'https://openalex.org/W2348749565', 'https://openalex.org/W2224615639', 'https://openalex.org/W2012473161', 'https://openalex.org/W1973263933'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2082832309', 'counts_by_year': [{'year': 2024, 'cited_by_count': 28}, {'year': 2023, 'cited_by_count': 25}, {'year': 2022, 'cited_by_count': 36}, {'year': 2021, 'cited_by_count': 44}, {'year': 2020, 'cited_by_count': 35}, {'year': 2019, 'cited_by_count': 63}, {'year': 2018, 'cited_by_count': 42}, {'year': 2017, 'cited_by_count': 52}, {'year': 2016, 'cited_by_count': 59}, {'year': 2015, 'cited_by_count': 54}, {'year': 2014, 'cited_by_count': 62}, {'year': 2013, 'cited_by_count': 48}, {'year': 2012, 'cited_by_count': 50}], 'updated_date': '2025-01-11T02:42:21.731730', 'created_date': '2016-06-24'}