Review request for Optimization of a Bioreactor Combined Heating System for Biogas Production Using Coal‐Water Fuel A review was requested for Optimization of a Bioreactor Combined Heating System for Biogas Production Using Coal‐Water Fuel Mechanical EngineeringElectrical and Electronic Engineering Request published May 19, 2026 Preprint server Preprints.org
Review request for Organic Matter Dynamics, Nitrogen Status and Biological Activity of Soils Under Different Land Use in Southern Kazakhstan A review was requested for Organic Matter Dynamics, Nitrogen Status and Biological Activity of Soils Under Different Land Use in Southern Kazakhstan Soil ScienceOceanographyAgronomy and Crop Science Request published May 19, 2026 Preprint server Preprints.org
Review request for Physical, Chemical, and Mechanical Characterization of Okra (Abelmoschus Esculentus) Fibers from the Littoral Region of Cameroon for Composite A review was requested for Physical, Chemical, and Mechanical Characterization of Okra (Abelmoschus Esculentus) Fibers from the Littoral Region of Cameroon for Composite Polymers and PlasticsBiomaterialsPlant Science Request published May 19, 2026 Preprint server Preprints.org
Review request for Research on the Multi-Factor Critical Criterion for Acoustic Fire Extinguishment Based on the Flame-Fuel Cycle Model A review was requested for Research on the Multi-Factor Critical Criterion for Acoustic Fire Extinguishment Based on the Flame-Fuel Cycle Model Safety, Risk, Reliability and QualityComputational MechanicsAerospace Engineering Request published May 19, 2026 Preprint server Preprints.org
Review request for The Influence of Deficient Hygiene and Nutrition in Pregnancy Outcome A review was requested for The Influence of Deficient Hygiene and Nutrition in Pregnancy Outcome Obstetrics and GynecologyPublic Health, Environmental and Occupational HealthMicrobiology Request published May 19, 2026 Preprint server Preprints.org