Warm-up phase: The temperature gradually rises to 50-55°C. When the baking tray is sent to the drying room for installation, close the ventilation equipment and doors and windows, pull the chimney bottom gate, in order to help increase the firepower and increase the temperature inside the drying room. It usually takes 4h to 6h to complete preheating. Different varieties, different preheating time, large varieties and dense tissue and thick skin species require a long warm-up time. The preheating time of Zanhuang jujube should be 6~8h, and the warming time of Pozao jujube should be 6h.
Evaporation phase: increase the firepower, within 8 ~ 12 h, so that the temperature of the drying room (referring to the middle temperature of the middle of the oven) rises to 60 ~ 65 °C, not more than 70 °C. At this stage, it is necessary to diligently dig up fire, dig out ash, and diligently add coal, so that the fire will be vigorous, and the indoor temperature will be quickly increased, and the free water of the jujube will be greatly evaporated. When the temperature of the jujube body reaches above 60 °C and the relative humidity reaches 70%, the ventilation and dehumidification in the drying room are immediately performed. Generally 8 to 10 times of ventilation and dehumidification per drying cycle. Evaporation phase should also pay attention to the plate and turn date, to avoid excessive local heat. Evaporation phase Zanhuang jujube requires 12 ~ 16h, Po date 10h.
Drying stage: The fire should not be too large. Keep the temperature in the drying room not lower than 50 °C. If the relative humidity is higher than 60%, ventilation and dehumidification should be carried out, and the number of times should be reduced as compared with the evaporation stage, and the time should be shortened. Generally takes about 6 hours, Zanhuang jujube needs 8~12h, and jujube 8h is appropriate.
Bake dried dates must pay attention to ventilation and heat dissipation before they can be stacked and stored.
Antimicrobial central venous catheters are discussed as a device to reduce catheter-related infections. Previously we have reported a study with 223 adult surgical patients randomized to receive either a rifampicin-miconazole-loaded Central Venous Catheter (CVC) (n=118) or a standard CVC (n=105). The antimicrobial CVC was shown to reduce catheter colonization (CC) and catheter-related local infection (CRI) significantly even at long-term catheterization. Here, we present further evaluation of the study focusing on possible benefits for high-risk patients. Subgroup analyses showed a pronounced reduction of CC and CRI in male, overweight and oncology patients. Important covariates were skin colonization for CC and oncological disease for CRI. Odds ratio (OR) for reducing CC was 0.076 (95% CI: 0.016-0.360) and CRI was reduced from 26% to 2.3% (p=0.001) in the cancer subgroup. Ex vivo long-term antimicrobial activity of modified catheters exceeded 4 weeks.
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