| study_title | string | The formal title of the scientific study or publication. |
| publication_date | date | The date the paper was published, in YYYY-MM-DD format. Example: '2024-05-15'. |
| study_design | string | The design of the study. Must be one of: Observational, Randomized Controlled Trial, Cross-sectional, Case-control, Cohort, In Silico Modeling, Experimental Lab Study. |
| field_of_research | string | The primary scientific field of the research. Example: 'Pharmacology', 'Materials Science', 'Environmental Chemistry'. |
| sample_type | string | The type of sample or biological material analyzed. Must be one of: Tissue, Cell Culture, Purified Compound, Environmental Water, Soil Sample, Human Subject, Animal Model. |
| number_of_samples | number | The total number of independent samples or subjects analyzed, as an integer. |
| species | string | If applicable, the scientific species name of the source material. Example: 'Homo sapiens', 'Mus musculus', 'Arabidopsis thaliana'. |
| measurement_technique | string | The primary technique used for measurement. Must be one of: HPLC, Mass Spectrometry, PCR, Flow Cytometry, ELISA, Spectrophotometry, Imaging. |
| reaction_time | number | The duration of the key experimental reaction or incubation step. |
| reaction_time_unit | string | The unit for the reaction time. Use s, min, or h. Example: 'min'. |
| incubation_temperature | number | The temperature maintained during the experiment or assay. |
| incubation_temperature_unit | string | The unit for the incubation temperature. Use '°C' or 'K'. |
| ph_value | number | The pH of the solution or medium used, as a floating-point number. |
| is_data_replicated | boolean | Was the reported data collected from independent replicates? Must be true or false. |
| primary_outcome_measured | string | The name of the primary outcome variable measured. Example: 'Cell viability', 'Gene expression level', 'Yield percentage'. |
| reported_value | number | The central quantified result reported for the primary outcome. |
| reported_value_unit | string | The unit for the reported outcome value. Example: 'ng/mL', '%', 'folds'. |
| statistical_analysis_method | string | The type of statistical test applied. Must be one of: ANOVA, T-test, Chi-squared, Regression analysis, Non-parametric test. |
| p_value | number | The calculated p-value associated with the primary comparison, as a floating-point number (e.g., 0.045). |
| doi | string | The Digital Object Identifier (DOI) or a full bibliographic reference for the source paper. |