• 대한인간공학회지
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• 제19권3호
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• pp.93-107
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• 2000

The excessive exposure to powered hand tools can cause damage to nerves, impair blood circulation, and musculoskeletal damage. The symptoms associated with hand-arm vibration syndrome (HAVS) include numbness, tingling, pain and subsequent reduced dexterity of the hands. This study was performed to report the prevalence of the HAVS and evaluate its related factors among the workers using powered hand tools. Total 282 workers in 11 plants of Kyungki and Inchon areas were examined. A standard symptom questionnaire was developed and administered to collect information on personal characteristics, work history, operating conditions, tool characteristics, and subjective symptoms of HAVS. Mean values (standard deviations) of the age, the duration of powered hand tools used, and the daily hours using powered hand tools were 38.3(8.9) years, 79.3(62.2) months and 6.0(2.6) hours, respectively. 132 workers(46.8%) showed vibration-induced white finger symptoms according to the Taylor-Pelmear classification, and 30 workers(10.6%) were interfered with the work. The results of a multiple logistic regression analysis controlling for age and daily working hours showed that smoking, work duration, weight of tools, and continuous work over 2 hours were significantly associated with the symptom of HAVS.

• 대한한의학원전학회지
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• 제32권2호
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• pp.135-146
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• 2019

Objectives : This study examines the grounds on which Wulao(五勞) Liuji(六極) Qishang(七傷) which are categories of Xulao(虛勞) are differentiated, along with standards by which each category is further classified. Methods : Based on "Zhubingyuanhoulun(諸病源候論)", the first text to sort the different types and symptoms of Wulao(五勞) Liuji(六極) Qishang(七傷), each classification and its symptoms were analyzed. Texts which were written relatively close in time to "Zhubingyuanhoulun" were referenced in the process. Results & Conclusions : The differentiation of Wulao(五勞) Liuji(六極) Qishang(七傷) is based on the cause of illness. Wulao(五勞) is caused by mental activity which fatigues the Five Zang, Liuji(六極) is caused by exterior pathogens that damage the Five Body Elements, and Qishang(七傷) is caused by emotional factors as well as damaging practices. In close examination, Wulao(五勞) was further classified according to the different layers of mental activity, described in terms of taxation illness of the damaged Zang. Liuji(六極) is damage of the Five Body Elements by exterior pathogens, which was put into the spacial structure of nature and explained in six. Qishang(七傷) refers to the collective of representative symptoms and representative causes of Xulao.

• Journal of Oral Medicine and Pain
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• 제46권2호
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• pp.54-62
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• 2021

Sjögren's syndrome (SS) is an autoimmune rheumatic disease characterized by the presence of lymphocytic infiltration of exocrine glands and other organs. Due to the rarity of SS, it is frequently overlooked by dentists as a cause of xerostomia. Clinicians should be aware that patients may have oral complications from SS including oral mucosal pain caused by frictional damage. Use of the latest diagnostic criteria approved by the American College of Rheumatology/European League against Rheumatism in 2016 for SS diagnosis provides the advantage of early identification of patients who have not yet developed dry mouth symptoms. A case of primary SS with the chief complaint of oral mucosal pain caused by mucosal damage associated with dry mouth is presented here. This case represents the importance of recognizing oral complications of xerostomia caused by SS, and illustrates use of the latest diagnostic criteria to diagnose the suspected symptoms by dental clinicians, who typically might be the first medical professional to encounter these symptoms.

• 한국응용곤충학회지
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• 제41권1호
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• pp.1-4
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• 2002

창원의 단감 과수원에서 2000년 6월 하순에 해충에 의한 피해 잎에서 총채벌레를 채집하여 분류한 결과, 우리나라에서는 처음으로 보고되는 관총태벌레科(Phlaeothripidae)의 감관총채벌레(신칭)(Ponticulothrips diospyrosi)로 확인되었다. 이 종의 간략한 형태 및 생태학적 특성, 피해증상, 경남 도내에서의 분포현황을 마련하였다

• Korean Journal of Acupuncture
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• 제39권4호
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• pp.191-198
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• 2022

Peripheral facial palsy generally results from damage to the facial nerve. As facial asymmetry is observed, it accompanies not only functional problems but also psychological and social difficulties. Medical institutions treat most patients, however, there are still patients who rely on invasive methods by unqualified practitioners for fear of sequelae. This case describes a 61-year-old woman who experienced facial palsy twice. She visited our hospital with skin damage after folk patch therapy for her facial palsy. Combined Korean medicine treatment was administered during treatment period. After treatments, the symptoms of facial palsy and skin lesions improved. This case showed that Korean Medicine was efficacious in improving symptoms of facial palsy with damaged skin caused by folk patch therapy. Education and awareness of uncontrolled invasive treatments for facial palsy are needed.

• 대한한의학원전학회지
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• 제36권2호
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• pp.77-96
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• 2023

Objectives : The purpose and application method of the five kinds of Gagamjeong-gisan in the Onbyeongjobyeon were analyzed and their significance was examined. Methods : First, contents within medical texts on the Gwakhyangjeong-gisan, the original formula for the Gagamjeong-gisan were analyzed. Next, application, symptoms and pathogenic mechanism, treatment principle, composition of the Gagamjeong-gisan as written in the Onbyeongjobyeon were analyzed. Characteristics of each formula as deduced from this process were compared and examined. Results : The Gwakhyangjeong-gisan covers both external contraction and internal damage, applied regardless of external or internal symptoms. It restores the Yang qi of the Spleen and Stomach, balancing the Zheng qi to respond to the external qi. The Gagamjeong-gisan takes after the Gwakhyangjeong-gisan, reflecting such properties. However, the latter differs in that it excludes ingredients unfit for treating dampness-warmth, and uses different application methods according to the level of discharge of dampness pathogen. Conclusions : The Gagamjeong-gisan is modified from the Gwakhyangjeong-gisan, which is applied to cold damage and internal damage to better treat warm disease. It can be said to have acted as a bridge for warm disease scholars in composing formulas that deal with dampness-heat disease.

• Journal of Biosystems Engineering
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• 제40권4호
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• pp.409-416
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• 2015

Purpose: This study evaluates a new banana bulk packaging method under the real transport conditions of Sri Lanka. Methods: A field evaluation of optimized 8-mm thick Styrofoam sheets used as the cushioning material was applied. A trial transport was conducted from Thambuttegama to Colombo using a medium-sized open truck, with banana leaves as the control material. Data were recorded at the farmer, transporter, retailer, and consumer stages of the supply chain. Mechanical damage, physiological loss in weight, fruit firmness, total soluble solids, ripeness index, visual quality ratings, and the physical damage index of the bananas were measured at each stage. A cost-benefit analysis was also conducted for both packaging methods. Results: The 8-mm styrofoam sheets significantly reduced (p < 0.05) the mechanical damage from 26.3% to 12.9% compared to the conventional method for long-distance transport, and the physiological loss in weight showed a decrease of 2.88%. The loss of firmness of the fruits followed a simmilar pattern for both methods until reaching the retailer, but at the consumer was significantly higher (p < 0.05) for the control. However, the physical damage index at the retail stage for the control showed symptoms of physical injury, whereas the bananas transported using the cushioning materials exhibited only minor symptoms. Further, the visual quality of the fruits after transport from the farmer to the consumer was preserved, which is one of the main factors affecting consumer preference and retail price. The proposed method increases the profit margin by 51.2% for Embul bananas owing to the reduced postharvest losses. Conclusion: The 8-mm thick Styrofoam sheets reduced the physical damage to the bananas, with the quality parameters maintained at the prefered level. Moreover, profits may be increased.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제18권4호
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• pp.230-237
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• 2015

Purpose: Various gastrointestinal factors may contribute to maladaptive behavior in children with autism spectrum disorders (ASD). To determine the association between maladaptive behavior in children with ASD and gastrointestinal symptoms such as severity, intestinal microbiota, inflammation, enterocyte damage, permeability and absorption of opioid peptides. Methods: This observational cross-sectional study compared children with ASD to healthy controls, aged 2-10 years. Maladaptive behavior was classified using the Approach Withdrawal Problems Composite subtest of the Pervasive Developmental Disorder Behavior Inventory. Dependent variables were gastrointestinal symptom severity index, fecal calprotectin, urinary D-lactate, urinary lactulose/mannitol excretion, urinary intestinal fatty acids binding protein (I-FABP) and urinary opioid peptide excretion. Results: We did not find a significant difference between children with ASD with severe or mild maladaptive behavior and control subjects for gastrointestinal symptoms, fecal calprotectin, urinary D-lactate, and lactulose/mannitol ratio. Urinary opioid peptide excretion was absent in all children. Children with ASD with severe maladaptive behavior showed significantly higher urinary I-FABP levels compared to those with mild maladaptive behavior (p=0.019) and controls (p=0.015). Conclusion: In our series, maladaptive behavior in ASD children was not associated with gastrointestinal symptoms, intestinal inflammation (no difference in calprotectin), microbiota (no difference in urinary D-lactate) and intestinal permeability (no difference in lactulose/manitol ratio). ASD children with severe maladaptive behavior have significantly more enterocyte damage (increased urinary I-FABP) than ASD children with mild maladaptive behavior and normal children.

• 동의생리병리학회지
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• 제34권4호
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• pp.159-169
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• 2020

Shanghanlun (Treatise on Cold Damage Diseases) is the oldest document in the literature on clinical records of Traditional Asian medicine (TAM), on which TAM theories about symptoms-herbs relationships are based. In this study, we aim to quantitatively explore the relationships between symptoms and herbs in Shanghanlun. The text in Shanghanlun was converted into structured data. Using the structured data, Term Frequency - Inverse Document Frequency (TF-IDF) scores of symptoms and herbs were calculated from each chapter to derive the major symptoms and herbs in each chapter. To understand the structure of the entire document, principal component analysis (PCA) was performed for the 6-dimensional chapter space. Bipartite network analysis was conducted focusing on Jaccard scores between symptoms and herbs and eigenvector centralities of nodes. TF-IDF scores showed the characteristics of each chapter through major symptoms and herbs. Principal components drawn by PCA suggested the entire structure of Shanghanlun. The network analysis revealed a 'multi herbs - multi symptoms' relationship. Common symptoms and herbs were drawn from high eigenvector centralities of their nodes, while specific symptoms and herbs were drawn from low centralities. Symptoms expected to be treated by herbs were derived, respectively. Using measurable metrics, we conducted a computational study on patterns of Shanghanlun. Quantitative researches on TAM theories will contribute to improving the clarity of TAM theories.

• 한국치위생학회지
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• 제18권1호
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• pp.115-124
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• 2018

Objectives: The purpose of this study was to investigate the correlation between soft drink consumption and subjective oral symptoms in Korean adolescents. Methods: Data of 65,528 adolescents were derived from the twelfth Korea youth risk behavior web-based survey, which was conducted from 1st June 2016 to 30th June 2016. Sociodemographic factors, dietary habit, and oral health behavior were collected as independent variables. The subjective oral symptoms were used as a dependent variable. The chi-square test and logistic regression analysis were performed to identify the correlation between dental caries and the other variables. Results: A multiple logistic regression analysis revealed that subjective oral symptoms were correlated with sex, age, subjective economic status, soft drink consumption, sweet drink consumption, tooth brushing frequency and dental sealant experience. Conclusions: Since the intake of soft drink adversely effects subjectively perceived oral symptoms in Korean adolescents, oral health education should include information on the pH levels of food and beverages including carbonated drinks, the effects of sugar on the teeth, and precautions to preventing tooth damage.