• Journal of Biosystems Engineering
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• v.31 no.1 s.114
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• pp.46-51
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• 2006

This study was carried out to recover phosphorus in animal wastewater using a magnesium source. $MgCl_2$, as a magnesium source, was shown a SP (soluble phosphorus) recovery rate of 98% in both the aeration and the NaOH tests to adjust pH around 8.5. In case of MgO, the recovery rate of SP were 88% with the aeration and 58% with the NaOH. In case of ammonia nitrogen recovery, $MgCl_2$ was shown the recovery rate of 17% with aeration and 18% with NaOH. MgO was shown the ammonia recovery rate of 18% with aeration and 11% with NaOH. At low temperature of $6-8^{\circ}C$ with the animal wastewater from piglet stall, the recovery rate of SP was shown 95% with NaOH and 92% with aeration using $MgCl_2$. The recovery rate of ammonia nitrogen was shown 9% with NaOH and 12% with aeration, respectively. It was observed that the pH can be raised by aeration. The reaction was completed within 5 minutes and the struvite cristal structure was formed and could be observed with an electronic microscope.

• Korean Journal of Acupuncture
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• v.32 no.1
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• pp.20-29
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• 2015

Objectives : The objectives of this study is to compare the effects of electroacupuncture(EA), warm needling(WN) and Radio Frequency warm needling(RFWN) stimulations on the acupoints at the artificially damaged ankles of Sprague-Dawley rats, which could be classified as the Grade 3. Methods : The foot weight bearing force ratio(FWBFR) of ankle sprain was measured first at 24 hours after without any other stimulations. Pain Recovery Index(PRI) represents the analgesic level, and modified Pain Recovery Index(mPRI) shows the accumulated recovery level. PRI was measured at 2 hours after each stimulus on GB34, GB39 and GB42, and mPRI was during 7 days. Results : EA stimulation of GB34 and GB39 acupoint in grade 3 ankle sprain showed a marked analgesic and recovery effect. RFWN of GB42 exhibited significant analgesic and pain recovery effect. RFWN of GB34 resulted in pain recovery effect but not analgesic effects, and RFWN of GB39 resulted in analgesic effect 2 hours after but not pain recovery. However, WN did not affect the pain recovery among three acupoints at all. Conclusions : In the Grade 3 ankle sprain model, the difference of analgesic effects were explained by the acupoints and the stimulation methods according to the accumulated recovery effects during 7 days. It is insufficient to determine that a certain acupoint has a specific analgesic effect depending on the stimulation method by the results of this study. Therefore, the effects of each stimulation on the acupoints in any other meridians at the sprained ankle should be compared and analyzed.

• Journal of East-West Nursing Research
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• v.23 no.1
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• pp.86-95
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• 2017

Purpose: This study was conducted to investigate the effects of forest walking program on stress and recovery among schizophrenic patients in a closed ward. Methods: A non-equivalent control group pre-posttest design was used. The participants were composed of 36 patients with schizophrenia admitted in two psychiatric hospitals. The experimental group (n = 18) received the forest walking program twice a week with a total of 6 weeks. Results: The study results revealed that the forest walking program was effective on stress(${\chi}^2=34.11$, p<.001), subjective recovery(${\chi}^2=22.40$, p<.001) and clinical recovery(F=28.34, p<.001) of hospitalized patients with schizophrenia. Conclusion: The findings indicate that the forest walking program for schizophrenic patients in the closed ward can be an effective nursing intervention to reduce stress and improve recovery ability. We suggest that mental health nurses may adapt this program to help patients with schizophrenia in a closed ward.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.24 no.3
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• pp.224-229
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• 2012

The importance of ventilation system is being emphasized by interest of indoor air quality. Especially, heat recovery ventilation system has attracted attention as most effective ventilation plan. Because it can reduce hazardous construction materials, indoor air pollutions, and also can reduce air conditioning energy cost. In heat recovery ventilator, the element core is the most important part. The element core is composed of liner and spacer. And liner and spacer are stacked alternately. On the Liner, heat and humidity transfer are made between supply and exhaust air. And spacer plays a role as a tunnel of exhaust and supply. In this study, we investigated and analyzed the efficiency of a heat recovery ventilator, when the spacer's properties are changed. As a result, difference spacer's properties affect an efficiency of heat recovery ventilator.

• The Journal of Korean Physical Therapy
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• v.26 no.6
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• pp.425-429
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• 2014

Purpose: The first purpose of this study was to evaluate whether hand muscle fatigue alters sensorimotor control of the hand in healthy subjects, using hand position sense. The second objective was to assess the repositioning variables during a 7.5-min period after the fatigue protocol. Methods: Participants performed a repeated handgrip movement to induce the fatigue condition as fast as possible, until they could no longer continue. Recordings were performed before (pre-fatigue) and after the completion of the fatigue exercises (immediately: post-fatigue, after a 2.5 min recovery, after a 5 min recovery and after a 7.5 min recovery). Results: The joint reposition test of the MP joint in the post-fatigue condition showed higher reposition errors than the prefatigue condition (p<0.05). Additionally, there was a significant difference in recovery of joint reposition errors after fatiguing exercises of the hand muscle, among groups (p<0.05). Conclusion: The fatigue of the hand muscles affected joint position sense by an alteration of somatosensory and proprioceptive information. Nonetheless, the effect of hand muscle fatigue was short-lived, since joint reposition errors decreased to post-fatigue values after 7.5 min of recovery.

• Journal of Korean Academic Society of Home Health Care Nursing
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• v.27 no.3
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• pp.344-355
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• 2020

Purpose: Recovery has a growing influence on policy for individuals with mental illness and their families. This study was designed to examine the meaning of recovery from the perspectives of community-dwelling patients with mental illness and their families. Methods: Using a descriptive qualitative approach, in-depth, face-to-face interviews were conducted on 24 adults (14 patients with mental illness and 10 family members). All interviews were audiotaped, transcribed and analyzed using thematic analysis. Results: The findings showed that recovery for the patients with mental illness suggested gradual changes by individual will and self-awareness, the relationship with both their family and self-help group, and the support of a therapeutic environment. Seven primary themes emerged from the analysis: improving insight on illness, strong will toward hope, discovering changed myself, helping each other together, gradual influence of positivity, being oriented to a therapeutic setting, and recognizing of home as a calm place. Conclusion: The findings of this study revealed that based on the conceptual elements of recovery of the patients with mental illness and their families, we expect to improve the systematic, comprehensive, and quality mental health services.

• ETRI Journal
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• v.30 no.2
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• pp.275-281
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• 2008

A 40 Gb/s clock and data recovery (CDR) module for a fiber-optic receiver with improved phase-locked loop (PLL) circuits has been successfully implemented. The PLL of the CDR module employs an improved D-type flip-flop frequency acquisition circuit, which helps to stabilize the CDR performance, to obtain faster frequency acquisition, and to reduce the time of recovering the lock state in the event of losing the lock state. The measured RMS jitter of the clock signal recovered from 40 Gb/s pseudo-random binary sequence ($2^{31}-1$) data by the improved PLL clock recovery module is 210 fs. The CDR module also integrates a 40 Gb/s D-FF decision circuit, demonstrating that it can produce clean retimed data using the recovered clock.

• Journal of the Korean Operations Research and Management Science Society
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• v.35 no.3
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• pp.1-24
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• 2010

As the Internet is explosively growing and the market is rapidly globalized, many entrepreneurs have been given an impetus to take on the function of the intermediation between providers and customers. Organizations performing the mediating roles in the cyberspace are termed 'cybermediary' and often called 'Openmarket' as a kind of transactional cybermediary in Korea. Despite sustainable growth of Openmarket, customer complaints and damages are increasing because of absence of recovery standards after a service failure. Therefore, it is important that a service provider converts dissatisfied customers to advocates for the growth of the Openmarket. This study aims to examine the role of recovery of the service failures for the Openmarket by proposing a relationship between complaint handling and continuance based on the equity theory. From the empirical results, we found that interactional equity had significant effects on both overall service satisfaction and recovery satisfaction, while procedural equity significantly influenced only recovery satisfaction. Recovery satisfaction also had an impact on overall service satisfaction and each satisfaction factor was positively related to continuance intention.

• The Journal of Korea CHUNA Manual Medicine
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• v.6 no.1
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• pp.85-110
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• 2005

Stroke is a severe disease in one's life, Many people are suffering from stroke, but there is not a complete recovery therapy. This article aims to review the literature on the Functional recovery of stroke patients, Articles in Medline database between 2003. and 2005. August were review, We classified 176 articles to assessment, therapy and prognosis. and we re-classified them to sub-classifications. We can apply this Informations to our clinic or hospital. And there is few article in relate to Korean-Medicine. It is needed to study about a method of Korean-Medicine on the functional recovery of stroke patients

• Transactions of the Korean Society of Mechanical Engineers B
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• v.32 no.8
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• pp.629-635
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• 2008

Recently, microturbines have received attention as a small-scale distributed power generator. Since the exhaust gas carries all of the heat release, the microturbine CHP (combined heat and power) system is relatively compact and easy to maintain. Generating hot water or steam is usual method of heat recovery from the microturbine. In this work, a heat recovery unit producing hot water was installed at the exhaust side of a 30 kW class microturbine and its performance characteristics following microturbine power variation was investigated. Heat recovery performance has been compared for different operating conditions such as constant hot water temperature and constant water flow rate. In particular, the influence of water flow rate and hot water temperature on the recovered heat was analyzed.