Effect of Cefazolin Sodium on Perioperative Prophylactic Anti-Infection in Patients Undergoing Gynecological Surgery

Purpose: The purpose is to investigate the effect of cefazolin sodium on perioperative prophylactic anti-infection in patients undergoing gynecological surgery. Methods: 112 cases of gynecological surgery from January 2019 to April 2020 were divided into the control group and the observation group, with 56 cases in each group. They were given cefazolin sodium + metronidazole and cefazolin sodium monotherapy respectively. The perioperative white blood cells and the incidence of adverse reactions of the two groups were compared. Results: There was no difference in the normal rate of white blood cell count between the observation group and the control group (P > 0.05), and no adverse reaction in the observation group, which was significantly lower than 7.14% in the control group (P < 0.05). Conclusion: the use of cefazolin sodium in perioperative period of gynecological surgery can prevent infection, with advanced security, less adverse reactions and high value

Analysis of Anti Infection Effect of Piperacillin Tazobactam and Cefoperazone Sulbactam in Elderly Patients with Coronary Heart Disease

Objective: to analyze the anti infection effect of piperacillin tazobactam and cefoperazone sulbactam in elderly patients with coronary heart disease. Methods: the experiment was carried out in groups from January 2019 to December 2020. The control group (cefoperazone sulbactam) and the study group (piperacillin tazobactam) were divided into two groups. The experimental patients were 98 elderly patients with coronary heart disease (49 cases in each group). Two groups of comparative indicators: pathogen clearance rate, incidence of adverse reactions. Results: the pathogen clearance rate of the study group was 94.63%, and that of the control group was 81.48%, which was higher than that of the control group (P < 0.05). The incidence of adverse reactions was 3.57% in the study group and 16.33% in the control group, which was lower in the study group than in the control group (P < 0.05). Conclusion: piperacillin tazobactam is better than cefoperazone sulbactam in the treatment of anti infection in elderly patients with coronary heart disease, which can better remove pathogenic bacteria, control various adverse reactions during drug treatment, and ensure the effectiveness and safety of drug use

Site-based Management, Job Autonomy, and Principal Turnover in the Public Education System

The purpose of this dissertation is to examine whether the implementation of site-based management leads to higher levels of principal autonomy and more collaborative decision-making processes between principals and teachers. It also measures the effects of principals’ job autonomy and other principal- and school-related factors on the levels of principal turnover. The data of this dissertation mainly come from the 2011-12 Schools and Staffing Survey (SASS) and the 2012-13 Principal Follow-up Survey (PFS). The controlled principal- and school-related factors include the individual characteristics of the principal, the contextual factors of the school which assess the physical background of the school and the composition of the student and teacher body, and also the working conditions of the principal. Using Wald-tests, linear regression models and logit regression models, I find that charter school principals perceive that they have higher levels of job autonomy than do traditional public school principals. I also find more collaborative and democratic decision-making processes in charter schools than in traditional public schools. In addition, I find that the levels of principals’ job autonomy negatively affect their turnover rates. Charter school principals, however, are more likely than traditional public school principals to leave their jobs even though they enjoy higher levels of job autonomy. The differences in the contextual factors of the school drive the higher levels of turnover probability among charter school principals

Approach to steady state transport in nanoscale conductors

We show, using a tight-binding model and time-dependent density-functional theory, that a quasi-steady state current can be established dynamically in a finite nanoscale junction without any inelastic effects. This is simply due to the geometrical constriction experienced by the electron wavepackets as they propagate through the junction. We also show that in this closed non-equilibrium system two local electron occupation functions can be defined on each side of the nanojunction which approach Fermi distributions with increasing number of atoms in the electrodes. The resultant conductance and current-voltage characteristics at quasi-steady state are in agreement with those calculated within the static scattering approach.Comment: 4+ pages in REVTEX4, 4 epsf figure