• Archives of Plastic Surgery
• /
• v.50 no.2
• /
• pp.171-176
• /
• 2023

Background Human bite wounds in emergency department need evaluation in regard of reconstruction. These are due to occlusive bite injuries over face. Most commonly, human bites over face involve ear and nose, and may lead to avulsion injury. Defects over nose can be reconstructed immediately after debridement or delayed till the wound heals and scar becomes supple. Thorough wash and lavage with broadspectrum antibiotic cover has utmost importance in preventing cartilage infection. Methods We report 20 cases of human bite injuries over nose who presented to us in emergency department between 2018 and 2020. At the time of presentation the wound was assessed for closure. If not possible, patient was planned for delayed reconstruction after 3 months. In case delayed reconstruction was planned, the skin and nasal mucosa were approximated at first presentation. The patients underwent paramedian forehead flap after recreation of defect with conchal cartilage graft. Second stage of flap detachment and insetting was done after 3 weeks. After three weeks of second stage, third stage of flap thinning was done. Patients were followed for 3-6 months and subjective satisfaction was noted. Results Nineteen patients underwent delayed staged reconstruction with paramedian forehead flap and one underwent primary wound closure. The flap survival was 100%. The patient satisfaction was excellent in most cases. Conclusion We recommend delayed reconstruction for human bite nasal injuries. For reconstruction, paramedian forehead flap with conchal cartilage graft, if required, provides excellent reconstructive option with good contour and color match and minimal donor site scar.

• Journal of Sasang Constitutional Medicine
• /
• v.35 no.3
• /
• pp.1-11
• /
• 2023

Objective This case report is to show the effectiveness of Sasang Constitutional Medicine treatment on the patient with delayed encephalopathy after acute carbon monoxide intoxication. Methods A 40-year-old female patient diagnosed with delayed encephalopathy after carbon monoxide poisoning 2 weeks ago before visiting our hospital. The patient suffered gait disturbance and cognitive disorder. She was identified as Soyangin and treated with Sasang constitutional Herbal Medicine(Yangkyuksanwha-tang and Hyungbangjihwang-tang). Improvement of symptoms was evaluated through Korean Version of Mini Mental Status Examination score(MMSE-K), Modified Barthel Index(MBI), Manual Muscle Testing(MMT), Range of Motion(ROM) and Hand Function Test. Results After 7 weeks of treatment, total score of MMSE-K increased from 0 to 26, the patient could walk by herself and had no trouble carrying out her daily life. Conclusions This case showed the effectiveness of Sasang constitutional medicine treatment for delayed encephalopathy after acute carbon monoxide intoxication.

• Journal of Institute of Control, Robotics and Systems
• /
• v.18 no.7
• /
• pp.613-616
• /
• 2012

This paper proposes the state observer design for nonlinear systems with delayed output. It is shown that by considering a nonlinear term of error dynamics as an additional state variable, the nonlinear error dynamics with time delay can be transformed into the linear one with time delay. Sufficient conditions for existence of a state observer are characterized by linear matrix inequalities. Finally, an illustrative example is given in order to show the effectiveness of our design method.

• Journal of Trauma and Injury
• /
• v.33 no.1
• /
• pp.53-58
• /
• 2020

Duodenal injury following blunt abdominal trauma is a relatively unusual complication, and it may sometimes be difficult to distinguish a duodenal hematoma from duodenal perforation. According to recent reports, intramural hematomas typically resolve spontaneously with conservative treatment. Surgery, however, is occasionally necessary in some cases if the diagnosis is delayed, conservative therapy fails, or a high degree of suspicion of duodenal injury persists. We experienced a case of delayed manifestation of a duodenal intramural hematoma that was surgically treated.

• Proceedings of the Korean Nuclear Society Conference
• /
• 1997.05a
• /
• pp.102-107
• /
• 1997

A stiffness in a dynamical system is numerically studied to investigate a sensitivity of a reactor to the delayed neutron spectra with the Doppler feedback. To test numerical procedure, we adopted a case of a reactivity accident in a point reactor model. We found that the stiffness is sensitive to a reactivity insertion rate and the delayed neutron spectra in the Doppler feedback phase. Our numerical results show that global reactor characteristics are not very sensitive to the delayed neutron spectra even though their instantaneous ones are sensitive. We present the time evolution of each precursor group explicitly.

• Journal of Chest Surgery
• /
• v.15 no.3
• /
• pp.308-310
• /
• 1982

During the closure of the sternum, following the mitral valve replacement for mitral stenoinsufficiency, hemodynamic instability with cardiac tamponade was developed. After transfusion of massive diuretics and albumin for a few times, reclosure of the sternum was attempted with development of hemodynamic instability. And so we decided delayed sternal closure. After 72 hours of mitral valve replacement, delayed sternal closure was done with success, and so we report this case with literatures.

• 제어로봇시스템학회:학술대회논문집
• /
• 1996.10b
• /
• pp.1201-1204
• /
• 1996

The previous results on LTR methods for time delay systems need the solution of the operator-type Riccati equation. In addition, it can be difficult to make the target loop shape representing the design specification. This paper proposes a new LTR method for input-delayed systems using well-established LTR method for non-delay systems. For doing this, a time delay margin is derived and the time delay of the input-delayed systems is assumed less than equal to the time delay margin. A simple example is presented for illustrations.

• 제어로봇시스템학회:학술대회논문집
• /
• 1996.10b
• /
• pp.972-975
• /
• 1996

This paper presents a sufficient condition for robust stability of discrete-time systems with delayed nonlinear perturbations. Using state evolution method, the bound on the norms of nonlinear perturbation which guarantees the exponential stability of the systems, is found. The numerical example is given to illustrate the results.

• 제어로봇시스템학회:학술대회논문집
• /
• 2001.10a
• /
• pp.176.4-176
• /
• 2001

In this paper, a novel type of iterative learning controller is studied. The proposed learning algorithm utilizes not only the error signal of the previous iteration but also the delayed error signal of the current iteration. The delayed error signal is adopted to improve the convergence speed. The convergence condition is examined and the result shows that the proposed learning algorithm shows the fast convergence speed under the same convergence condition of the traditional iterative learning algorithm. The simulation examples are presented to confirm the validity of the proposed ILC algorithm.

• 제어로봇시스템학회:학술대회논문집
• /
• 1988.10b
• /
• pp.947-950
• /
• 1988

A New type of controller for stabilization of ordinary system in which delayed states are included in feedback loop, is presented. Simple conditions are proposed for the stabilization of ordinary systems with the delayed state feedback controller. Under these conditions, controller gains can be chosen such that desired system performances are satisfied. It is shown that by using this controller the performance and robustness of the resulting closed loop system are much improved compared to the conventional memoryless state feedback controllers.