Butterfly valve working principle and valve animation d…

A circular valve disc for opening and closing member to open and rotates with the stem, and closing a valve regulating the fluid passage. The butterfly valve's disc is mounted in the diameter direction of the pipe. In the cylindrical passage of the butterfly valve ...more...

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High-oil corn planting technology

The oil content of common corn kernels is usually 4% to 5%, while the grain corn with a grain content that is more than 50% higher than normal corn is called high-oil corn. It is a new kind of corn created by artificial breeding. At present, high-oil corn varieties suitable for high-yield developm ...more...

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UK develops bactericidal fabrics to eliminate ward bact…

Release date: 2009-03-05 Textiles in hospital wards often carry a large number of stubborn bacteria that infect diseases and endanger the health of patients. Recently, British scientists have implanted new bactericidal ingredients into the fabric structure of fabrics to kill antibiotic-resistan ...more...

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Precise identification of tomato disease in greenhouse …

In the spring, as the temperature rises, tomato bacterial wilt, blight, and root knot nematode disease gradually increase. The symptoms of these three kinds of diseases are not easily distinguishable from the surface. The author will describe in detail the differences and solutions of these three s ...more...

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How to save costs in scale farming

How to save costs in scale farming After the New Year passed in 2009, the price of pigs dropped rapidly, the price of feed ingredients did not drop, and the profit of breeding was severely reduced. How to increase the breeding efficiency, the price of live pigs and the price of feed raw materials, ...more...

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Two color spots on the bell pepper fruit

First, the symptoms of disease. The lesions are black in color and yellow in color. These two kinds of stains are all physiological diseases. They usually appear when the fruit starts to turn color. The lesions are round or nearly round, with a diameter of 2-6 mm. They are slightly concave, and the ...more...

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Brazilian doctor completes double heart transplant

Release date: 2009-03-10 The new heart is transplanted into the patient's right chest, allowing the new heart to assist the original heart to pump blood to meet the body's blood supply! It is reported that this 12-hour "double heart transplant surgery" is very smooth, and the ...more...

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