油菜蜂花粉的生物活性及其开发利用现状

人们健康理念日益增强，油菜蜂花粉作为一种天然保健原料，研究开发价值极高。文章介绍了油菜蜂花粉富含的多种营养成分和活性物质，主要总结油菜蜂花粉在抗氧化、抗炎、增强免疫、抗菌、保护前列腺、抗糖尿病并发症、抗肿瘤、调节保护肠道、保护卵巢等方面的生物活性和药理作用，以及油菜蜂花粉在蜂产品、保健品、食品、医药、化妆品中的应用，并对油菜蜂花粉的发展方向进行了展望。     

Selective Harmonics Elimination Technique for Artificial Bee Colony Implementation

In this research, an Artificial Bee Colony (ABC) algorithm based Selective Harmonics Elimination (SHE) technique is used as a pulse generator in a reduced switch fifteen level inverter that receives input from a PV system. Pulse width modulation based on Selective Harmonics Elimination is mostly used to suppress lower-order harmonics. A high gain DC-DC-SEPIC converter keeps the photovoltaic (PV) panel’s output voltage constant. The Grey Wolf Optimization (GWO) filter removes far more Photovoltaic panel energy from the sunlight frame. To eliminate voltage harmonics, this unique inverter architecture employs a multi-carrier duty cycle, a high-frequency modulation approach. The proposed ABC harmonics elimination approach is compared to SHE strategies based on Particle Swarm Optimization (PSO) and Flower Pollination Algorithm (FPA). The suggested system’s performance is simulated and measured using the MATLAB simulation tool. The proposed ABC approach has a THD level of 4.86%, which is better than the PSO and FPA methods.     

A Reframed Watermark Extraction Approach Using the ABC Algorithm

The fast development and the rapid spread of information technology have raised the issue of digital-image copyright protection,which was mostly addressed through robust watermarking.To ensure the survival of the watermark after attacks,most works have been making use of an additional step at the embedding phase,and by so making the scheme unsuitable for real-time implementation.However,to be effective and secure,it is recommended to combine the watermarking algorithm and the capture sensor in one device.In this paper,we brought the extra stage to the detection side.We firstly studied the effect of some signal processing operations on a watermarked image,then we proposed a general model for watermark extraction whose parameters were determined using the artificial bee colony.The efficacy of the proposed method was validated by comparing its robustness with two state-of-art schemes focusing on the watermark extraction.