Studying the Suitability of Nineteen Lignins as Partial Polyol Replacement in Rigid Polyurethane/Polyisocyanurate Foam

In this study, nineteen unmodified lignins from various sources (hardwood, softwood, wheat straw, and corn stover) and isolation processes (kraft, soda, organosolv, sulfite, and enzymatic hydrolysis) were used to replace 30 wt.% of petroleum-based polyol in rigid polyurethane/polyisocyanurate (PUR/PIR) foam formulations.Lignin samples were characte

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High-Accuracy Absolute-Position-Aided Code Phase Tracking Based on RTK/INS Deep Integration in Challenging Static Scenarios

Many multi-sensor navigation systems urgently demand accurate positioning initialization from global navigation satellite systems (GNSSs) in challenging static scenarios.However, ground blockages against line-of-sight (LOS) signal reception make it difficult for GNSS users.Steering local codes in GNSS basebands is a desirable way to correct instant

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ERADICATING THE BARRIERS TO INCLUSIVE HIGHER EDUCATION

Introduction.Nowadays, people with disabilities (PWDs) and special educational needs must be empowered with high-quality university education for successful social integration in life.However, where to buy sweetlix goat mineral the current restricted access to inclusive higher education makes it hard to enhance their professional fulfillment and to

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