Beijing Municipal Education Commission

The “Five in One” integrated precise prevention and control system for pollen allergic diseases in Northern China: A narrative review with global perspective

Allergic diseases driven by airborne pollen are a growing public health burden in Northern China, where spring tree pollens and summer–autumn weed pollens are major triggers of allergic rhinitis, asthma, conjunctivitis, atopic dermatitis, and anaphylaxis. Internationally, managem...

Grid-Forming Control Technologies for Cascaded H-Bridge Power Conversion Systems

The increasing penetration of renewable energy is driving power systems toward low-inertia and weak-grid operation, increasing the need for power conversion systems (PCSs) with active voltage and frequency support. Grid-forming (GFM) control enables converters to establish voltag...