Planting Ziyunying to Produce Organic Fertilizer

Ziyunying, also known as red flower grass, generally produces 1500-2000 kilograms of fresh grass per mu, which is the main winter green manure. Planting Ziyunying not only has less labor, but also has lower costs and higher fertilizer efficiency. It can also improve the soil, cultivate fertility, ---

Artificial blood vessels can imitate pulsation

Release date: 2010-01-11 In 2010, British scientists will apply a man-made blood vessel to the human body for testing. According to reports, the London Royal Free Hospital in London used nanotechnology to develop a blood vessel for heart bypass made of polymeric materials. Artificial blood ves---