1 Introduction Freeze-drying technology is widely used in the preparation of solid protein drugs, oral fast-dissolving drugs and drug-embedded liposomes, etc., because the lyophilized drug is porous, stable for long-term storage, and easy to re-rehydrate. . According to the database of the State Dru ---MORE---
The emulsifier is a homogeneous polycrystalline material in which emulsifier molecules are aligned with each other in polar groups, and the oleophilic groups are parallel to each other and closely arranged (see Figure 5a). When the emulsifier is mixed with water and heated to the Kraffi temperature ---MORE---
material: Milk 500ml Soybean (or other beans) 100g Vinegar 50ml Salt 1 tsp Practice: 1. Boil soybeans with salted water and remove them 2. Add milk and green soybeans in a blender and grind them. 3. Pour method (2) into a saucepan and add vinegar and salt, then heat over low heat, and continue ---MORE---
1. Reduced dead spermatozoa, azoospermia, sperm abnormalities occur in summer This is a problem that must be prevented in all pig farms except in the three northeastern provinces. The problem of young boars is particularly acute, caused by heat stress caused by high temperatures. . It has been repo ---MORE---
Orchard single-phase water pump has the characteristics of small size, light weight, light movement, flexibility, wide application, and strong adaptability. In recent years, it has been very popular among farmers and fruit specialties. Due to the user's incomprehensible understanding of the st ---MORE---
First, apple pruning techniques of young trees: from the time of planting seedlings to the results of the early stage of the saplings, apple saplings, tree vigor, new shoots grow large, easy to strong. The main task of pruning is to retain and cultivate the backbone branches, arrange the tree skele ---MORE---
In summer, the climate is very hot. Pigs are warm-blooded animals with thick subcutaneous fat and underdeveloped sweat glands. Therefore, in order to resist heat, pigs can easily fall off, grow slowly, and even die of heat stroke. Therefore, in the midst of raising pigs in summer, we must strengthe ---MORE---