Oxygen Flow control regulators and conserving devices are pressure reducing devices designed to regulate or lower oxygen pressure from a cylinder to levels that can be safely used by the patient. A Regulator simply regulates the (free) flow from an oxygen cylinder. A Conserving Device is an entirely different kind of device that delivers a "pulse" of oxygen as the patient inhales (on demand).
Oxygen Regulator, Oxygen Tanks, Oxygen Tank Regulators,Oxygen Regulators Ningbo Queen Electronic Science Technology Co., Ltd , https://www.queenmeds.com
What are the causes of malformation of cultivated cucumbers? How to prevent?
In cucumber cultivation, malformed melons often occur, such as bee-waisted gourd, pointed-mouthed gourd, big-headed melon, and curved melon. These malformed melons severely affect cucumber yield and quality. The main causes of malformed melons are due to improper cultivation and management and poor fertilization of cucumbers. If the female flower pollination is not complete, the water supply after the fertilization is uneven, the plants are weak, the accumulation of photosynthetic products is less and the distribution is uneven, and it is easy to cause bee loincloths. Unisexually-fruited weak varieties, those who are not fertilized, can easily become pointed-head melons. Poor growth, malnutrition, especially in the late melon expansion of fertilizer and water shortage, more prone to sharphead melon. Fertilization is not complete. When seed is produced only at the apex, the seeds are developed to absorb more nutrients. Therefore, the apex melon meat tissue is also particularly fat and becomes a large pot. When the melon expands, it absorbs too much water, and it is also easy to form a big squash. As the stems and leaves grow too prosperous, nutrients are concentrated in the stems and leaves, but not enough to provide melon growth, or oocyte fertilization at the edge of the ovary, melon development is not balanced, and thus grow into a curved melon. To prevent the formation of malformed cucumbers, water should be uniformly fertilized according to the growth and development status of the plants, the appropriate temperature should be controlled, pollination conditions should be transmitted at the flowering stage, and the relationship between vegetative growth and reproductive growth should be coordinated so as to prevent and treat insect pests in time and maintain plant growth potential. For malformed melons that have already emerged, they should be removed as soon as possible so that nutrients can be concentrated and provided for the growth and development of normal young melons.