Potted flowers often appear yellow in the growing season. The reason is mostly caused by improper cultivation and management. Here are some of the "yellow" phenomenon.
1, water yellow: pot-soil water long-term humidity, resulting in soil oxygen deficiency, so that part of the root system rot, water absorption, absorption capacity weakened. Performance in the young leaves dull yellow, the new tip of the top of the atrophy, small yellow and green branches. In this case, loose soil should be used to control watering and stop fertilizing.
2. Yellow fertilizer: Due to excessive fertilization or excessive concentration, especially yellow leaves caused by partial application of nitrogen fertilizer, the new leaf is hypertrophic and shiny, but the leaf surface does not stretch, and the old leaves gradually turn yellow and fall off. At this point should stop the fertilization and appropriate increase in the amount of water to dilute the nutrients, potted fertilizer and water is not enough or a large basin, pot roots aging or too dense, will also make the leaves of flower plants thin, yellow, this time should change the basin Change soil, usually during the rain to the beginning of summer.
3, alkali yellow: Potted hi acidic flowers, such as Camellia, Milan, smiling, rhododendron, jasmine, etc., often due to soil alkaline reaction caused by chlorotic chlorosis. It appears in the veins that began in the shoots of the new leaves, and the veins, especially the main veins, remain green and the yellow-green phase phenomenon is very obvious. As the degree of yellowing increases, the veins gradually lose their greenness, and then the whole leaf turns white. The margins of the leaves are scorched and the leaves fall. In severe cases, the tip of the branches shoots and the whole plant dies. For this “yellowing†phenomenon, it can be improved by applying acidic fertilizers or acidic substances, or it can be applied regularly.
4, yellow: like the flowers of the sun, often due to lack of indoor illumination caused by the leaves yellow, this time should be moved to outdoor ventilation basin light. For semi-negative flowers, such as asparagus, the leaves will also be yellow under strong light, so to avoid exposure to high temperature and strong light in summer, it should be moved indoors or set up in the shade.
5. Dry yellow: Due to long-term no watering, or less watering, leaves appear yellow or brown, brown edge, old leaves from the bottom of the yellow off. However, the new leaves generally grow normally. When this kind of phenomenon occurs, the water should be added to make the soil no longer lack moisture.
6, burning yellow: hi wet potted plants, such as spider plants, evergreen, jade, etc., such as by direct sunlight, the leaves also have brown, brown edge phenomenon. This phenomenon occurs, the pot can be placed in the shade.
7, hot yellow: some potted flowers that are not resistant to high temperature and high humidity, due to poor summer ventilation, shade caused by improper yellow leaves, such as bells jellyfish in summer this phenomenon. Therefore, high temperature and high humidity also tend to cause yellowing of the leaves. The yellowing of the leaves requires attention only to ventilation and cooling, and the basin soil can not be prevented by excessive humidity.
SE-12B Digital Three Channel Color Touch Screen ECG Machine(electrocardiograph)
Features
- The system is designed with a high-resolution thermal printer featuring 8dot/mm
vertical resolution and 40dot/mm horizontal resolution(at 25mm/s) speed and filter as
well as related marks.
- Simultaneously 12 lead signal acquisitions.
- Digital filter to prevent baseline drift and automatic positioning of the baseline provide
accurate ECG trace.
- Able to detect and alarm on electrode disconnection.
- LED indicator and LCD display show operation status of the unit.
- Isolated input circuit guarantees safety standard in compliance to Class I type CF.
- AC/Rechargeable battery supports continuous operation when AC power supply is not
available. For the battery operation, the system is equipped with a battery charger and
a system for battery capacity management and protection.
- Compact size.
Specifications
Lead: Standard or Cabrera 12 leads,Simultaneously 12 leads acquisition
Sampling rate: 1000Hz(1ms)
Frequency Response: 0.05 ~ 150Hz
Time Constant: ≥3.2s
CMRR: >100dB
Input Circuit: <0.1 µA
Noise Level: ≤ 8 µVp∽p
Polarization Voltage: ±500mV
Sensitivity valve: 20 µV
Calibration Voltage: 1mV ±0%
Filter: AC: 50Hz-20dB(or 60Hz); EMG
filter:25-35-45Hz-3dB;
Drift filter: 0.5Hz -3dB
Sensitivity: 1.25, 2.5, 5, 10, 20mm/mV±2%,40 when format setted at 6ch or 3+3ch
Paper Speed: 5, 6.25, 10, 12.5, 25, 50mm/s ±3%
Recording MODE: Thermal array printer 8 dot/mm(Vertical) 40 dot/mm(Horizontal, 25mm/s)
Paper Size: 210mm20m or 216mm20m, thermal roll paper
Ecg Machine,Ecg Machine 12 Channel,Electrocardiograph Machine 6 Channel,Three Channel Ecg Machine
Guangzhou Sonostar Technologies Co., Limited , https://www.sonoeye.com