| 释义 |
noun ˈdɛkstran-strən mass nounChemistry 1A carbohydrate gum formed by the fermentation of sugars and consisting of polymers of glucose. Example sentencesExamples - Among them, the most effective in preserving a more native-like structure are the disaccharides sucrose and trehalose in dry films and the polymer dextran in wet films.
- The particles are crafted from the polymer dextran, a sugar-binding protein, and insulin.
- Fructans appear to be special in their membrane protective action, since other polymers such as dextran and HES failed to protect the membrane barrier function during freeze-drying, whereas chicory inulin was able to retain CF.
- This assay used DEAE dextran to stabilize polymers, which were then collected by filtration through a nylon membrane.
- In one set of experiments, they loaded the sugar dextran, the anticoagulant heparin, or a growth hormone into reservoirs on separate chips.
- 1.1Medicine A solution containing a hydrolysed form of dextran, used as a substitute for blood plasma.
Example sentencesExamples - The viscosity of the dextran solution chosen for the go-and-stop experiment allowed testing most red cells of the population.
- High molecular weight dextran expands the plasma volume by an amount equal to 80% to 120% of the volume infused and the plasma volume is increased for up to 6 hours after infusion.
- After the subjects were detrained, they were infused with a dextran solution to expand their blood volume until it exceeded their trained level.
- A new preservation solution, which combines a low potassium concentration and dextran, has also been developed specifically for the lungs.
- Larger scale studies may be needed if important clinical differences between colloids and crystalloids are to be found (including the possibility that dextran may worsen bleeding complications).
Origin Late 19th century: from dextro- + -an. noun-strən Chemistry 1A carbohydrate gum formed by the fermentation of sugars and consisting of polymers of glucose. Example sentencesExamples - The particles are crafted from the polymer dextran, a sugar-binding protein, and insulin.
- Among them, the most effective in preserving a more native-like structure are the disaccharides sucrose and trehalose in dry films and the polymer dextran in wet films.
- In one set of experiments, they loaded the sugar dextran, the anticoagulant heparin, or a growth hormone into reservoirs on separate chips.
- This assay used DEAE dextran to stabilize polymers, which were then collected by filtration through a nylon membrane.
- Fructans appear to be special in their membrane protective action, since other polymers such as dextran and HES failed to protect the membrane barrier function during freeze-drying, whereas chicory inulin was able to retain CF.
- 1.1Medicine A solution containing a hydrolyzed form of dextran, used as a substitute for blood plasma.
Example sentencesExamples - High molecular weight dextran expands the plasma volume by an amount equal to 80% to 120% of the volume infused and the plasma volume is increased for up to 6 hours after infusion.
- After the subjects were detrained, they were infused with a dextran solution to expand their blood volume until it exceeded their trained level.
- The viscosity of the dextran solution chosen for the go-and-stop experiment allowed testing most red cells of the population.
- A new preservation solution, which combines a low potassium concentration and dextran, has also been developed specifically for the lungs.
- Larger scale studies may be needed if important clinical differences between colloids and crystalloids are to be found (including the possibility that dextran may worsen bleeding complications).
Origin Late 19th century: from dextro- + -an. |