The main objective of the executed researches was assessment of efficiency of recovering and equipment re-installation of longwalls at the applied technological schemes of mining of flat coal seams of the Kuznetsk coal basin. The analysis... more
The main objective of the executed researches was assessment of efficiency of recovering and equipment re-installation of longwalls at the applied technological schemes of mining of flat coal seams of the Kuznetsk coal basin. The analysis of the actual duration of performance of dismantling and installation works in mines of the SUEK Kuzbass company is made. It is shown that very poor state of a roof of recovery rooms is a basic reason for increase in duration of equipment downtimes. Recommendations about increase in roof stability of recovery rooms, a longwall erection are made. Economic disbenefit assessment from outages of the high-performance equipment of longwalls is executed.
The numerical analysis of the stress-strain state of the rock massif at different location the longwall erection of recovery rooms are executed. Need of accounting of value of periodic roof weighting is shown. As the pacing factors having... more
The numerical analysis of the stress-strain state of the rock massif at different location the longwall erection of recovery rooms are executed. Need of accounting of value of periodic roof weighting is shown. As the pacing factors having the impact on the value of periodic roof weighting durability and power of the main roof and speed of advance of the longwall face are specified. The possibility of use of MARCO electro-hydraulic control equipment systems for exact determination of periodic roof weighting is shown. The recovery rooms erection technology providing decrease span of time and costs of moving of the longwall equipment is offered.
Background Children and parents experience significant anxiety and distress during the preoperative period. Currently available interventions are having limited efficacy. Based on an integration of the literature in both the anesthesia... more
Background Children and parents experience significant anxiety and distress during the preoperative period. Currently available interventions are having limited efficacy. Based on an integration of the literature in both the anesthesia and psychological milieus, the authors developed a behaviorally oriented perioperative preparation program for children undergoing surgery that targets the family as a whole. Methods Children and their parents (n = 408) were randomly assigned to one of four groups: (1) control: received standard of care; (2) parental presence: received standard parental presence during induction of anesthesia; (3) ADVANCE: received family-centered behavioral preparation; and (4) oral midazolam. The authors assessed the effect of group assignment on preoperative anxiety levels and postoperative outcomes such as analgesic consumption and emergence delirium. Results Parents and children in the ADVANCE group exhibited significantly lower anxiety in the holding area as com...
To determine the cost-effectiveness of a proposed reorganization of surgical and anesthesia care to balance patient volume and safety. Discrete-event simulation methods were used to compare current surgical practice with a new modular... more
To determine the cost-effectiveness of a proposed reorganization of surgical and anesthesia care to balance patient volume and safety. Discrete-event simulation methods were used to compare current surgical practice with a new modular system in which patient care is handed off between 2 anesthesiologists. A health care system's perspective, using hospital and professional costs, was chosen for the cost-effectiveness analysis. Outcomes were patient throughput, flow time, wait time, and resource use. Sensitivity analyses were performed on staffing levels, mortality rates, process times, and scheduled patient volume. The new strategy was more effective (average 4.41 patients/d [median = 5] v. 4.29 [median = 4]) and had similar costs (average cost/ patient/d = 5327 dollars v. 5289 dollars) to the current strategy with an incremental cost-effectiveness of 318 dollars/additional patient treated/d. Surgical mortality rate must be >4% or hand-off delay >15 min before the new strat...
Background The authors assessed the willingness to pay (WTP) for "perfect" prophylactic antiemetics and analgesics in patients who were scheduled to undergo surgery during general anesthesia. Furthermore, they determined whether... more
Background The authors assessed the willingness to pay (WTP) for "perfect" prophylactic antiemetics and analgesics in patients who were scheduled to undergo surgery during general anesthesia. Furthermore, they determined whether postoperative experiences of pain and nausea and vomiting (PONV) changed patients' WTP. Methods Data were collected alongside a randomized clinical trial that investigated the incidence of PONV in patients anesthetized with either inhalation anesthesia or total intravenous anesthesia. A subset of 808 consecutive patients participating in the trial completed WTP questionnaires 1 day before and 2 weeks after surgery. The outcome measure was the maximum amount of money that patients were willing to pay for "perfect" antiemetics and analgesics. Preoperative WTP and individual WTP changes after surgery were analyzed in relation to baseline characteristics and postoperative pain and PONV experiences. Results Prevention of postoperative pain...
The numerical analysis of the stress-strain state of the rock massif at different location the longwall erection of recovery rooms are executed. Need of accounting of value of periodic roof weighting is shown. As the pacing factors having... more
The numerical analysis of the stress-strain state of the rock massif at different location the longwall erection of recovery rooms are executed. Need of accounting of value of periodic roof weighting is shown. As the pacing factors having the impact on the value of periodic roof weighting durability and power of the main roof and speed of advance of the longwall face are specified. The possibility of use of MARCO electro-hydraulic control equipment systems for exact determination of periodic roof weighting is shown. The recovery rooms erection technology providing decrease span of time and costs of moving of the longwall equipment is offered.
The main objective of the executed researches was assessment of efficiency of recovering and equipment re-installation of longwalls at the applied technological schemes of mining of flat coal seams of the Kuznetsk coal basin. The analysis... more
The main objective of the executed researches was assessment of efficiency of recovering and equipment re-installation of longwalls at the applied technological schemes of mining of flat coal seams of the Kuznetsk coal basin. The analysis of the actual duration of performance of dismantling and installation works in mines of the SUEK Kuzbass company is made. It is shown that very poor state of a roof of recovery rooms is a basic reason for increase in duration of equipment downtimes. Recommendations about increase in roof stability of recovery rooms, a longwall erection are made. Economic disbenefit assessment from outages of the high-performance equipment of longwalls is executed.
