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).
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Soybean borer is a member of the order Phosoptera, Mythicae, which is also known as soybean moth, bean aphid, and red worm. The larvae break into the soybean meal to harm the beans, the annual insect feeding rate is about 10-20%, when serious, it can reach 30-40%, and the highest can reach 80%, and it also affects the quality of the soybean and reduces the grade. When a group of moths appear in the field of soybean borer and the number of moths in each group is relatively large, the phenomenon of double growth appears, indicating that the adult has entered its peak period. The following methods should be taken immediately for prevention and control: First, fumigation with dichlorvos, ie, per acre With 80% of dichlorvos EC 100-150 ml, the sorghum or corn sticks are cut into 20 cm lengths, one end is peeled, and the medicament is sucked into medicine sticks. The unimpregnated end of the sticks is inserted into the bean field, every 5 cuts. One line, bar distance 4-5 meters. The second is the use of pesticides such as pyrethroid spray control. Use 25% cyanide per acre, 20-30 ml of pungent emulsifiable concentrate, or 2.5% lambda-cyhalothrin as a water emulsion to spray 30 kg of water. When spraying, pay attention to the effect of rain on the drug efficacy. In order to ensure the control effect, it is recommended to use motorized mist sprayer and disable some highly toxic agents.