ABSTRACT
To effectively urge students to preview lessons before class, carry out efficient precise interactive teaching in class and make an accurate analysis on the teaching effect after class, Rain Classroom was utilized to construct a high-efficient interactive precision before-class-in-class-after-class teaching mode for physiology teaching. A questionnaire survey was conducted for the students, and the results show that the students are very fond of the teaching mode supported by Rain Classroom. The mode effectively promotes the students' daily study and the interaction between teachers and students, makes teachers accurately grasp the students' situation and perform scientific and precise teaching, enhances the teaching efficiency and improves the teaching effect.
ABSTRACT
This research is to construct a basic medical sciences’experimental teaching system in order to cultivate innovative talents. It is guided by cultivating innovative practical ability and post compe-tence and implements a teaching mode with “five combinations”by integrating teaching resources, strength-ening interdisciplinary combination , integrating curriculum and organ systems , and optimizing teaching modules and experiment content. A preliminary personnel training mode and experimental teaching system have been constructed for innovative talent cultivation, and correspondently a diversified experiment exami-nation system and teaching quality monitoring system have been constructed through teaching practice, which aims at continuously improving experiment teaching quality and talent training quality.
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AIM: To observe dose-effect relationship of spinal anesthesia with 0.75% ropivacaine in caesarean section.METHODS: According to the dosage of 0.75% ropivacaine,120 full-term and single-birth puerperants were randomly divided into four groups of 30 people each.The dosage of group Ⅰ,Ⅱ,Ⅲ and Ⅳ were 1.5,1.8,2.1 and 2.4 mL respectively.The sensory and motor block of each group within 30 minutes after the injection were observed,and the hemodynamic changes and adverse effects were recorded.RESULTS:(1) Within 30 minutes after the injection,the intermediate zone of pain disappeared highest block level of group I-IV were T10,T8,T6 and T5 respectively.(2) During the period of the first 30 minutes,there were 3 cases in group Ⅲ(10%) and 8 cases in group Ⅳ(27%) appeared chest distress and dyspnea,and the blood pressure of 5 cases in group Ⅲ(17%) and 12 cases in group Ⅳ(40%) dropped to 90 mm Hg(1 mm Hg=0.133 kPa).There were significant difference compared with group IV(P0.05),there were significant difference between group IV and other groups(P
ABSTRACT
AIM: The effects of selenium dioxide (SeO_2) on proliferation, apoptosis, intracellular reactive oxygen species (ROS) and Ca~(2+) levels in three leukemia cell lines NB4, K562 and HL-60 were investigated. METHODS: Three leukemia cell lines were treated with 3-30 ?mol/L SeO_2. Flow cytometry was used to detect apoptosis rate, and analyze the changes of ROS and Ca~(2+) level within cells. RESULTS: SeO_2 at 10 and 30 ?mol/L inhibited proliferation in three leukemia cell lines. Treatment with 30 ?mol/L SeO_2 for 48 h induced 54.0%, 46.5%, 49.6% apoptosis in NB4, K562, and HL-60 cells, respectively, and also markedly decreased ROS and Ca~(2+) levels among three cell lines. The rate of ROS positive cells in NB4 and HL-60 decreased with the increase in SeO_2 concentrations. ROS was clearly reduced with 30 ?mol/L SeO_2 in K562. Ca~(2+) levels were tardily declined with 10, 30 ?mol/L SeO_2 in NB4 and HL-60 cells. Ca~(2+) levels were clearly reduced with 30 ?mol/L SeO_2 in K562. CONCLUSION: SeO_2 induces apoptosis in three leukemia cells. The declines of intracellular ROS and Ca~(2+) levels are involved in apoptosis induced by SeO_2.