• Title/Summary/Keyword: Louse

Search Result 34, Processing Time 0.027 seconds

Scanning Electron Microscopic Study on the Head Lice Eggs Detected in Korean Children

  • Park, Mi Soon;Chang, Byung Soo
    • Applied Microscopy
    • /
    • v.44 no.2
    • /
    • pp.47-52
    • /
    • 2014
  • Fine structural characteristics of eggs (nits) found on the scalp hairs of Korean children were observed with scanning electron microscopy. An egg is structurally composed of four parts: the cementum, nit body, operculum, and aerophyle. The total length of an egg is about 1.5 mm. The glue secreted from the female louse completely surrounds the 1 mm hair shaft and forms the cementum. The thickness of the cementum at the end of the nit body was found to be more than 5 times the thickness at the end toward the scalp. The nit body is shaped like a goblet with a very smooth surface. The operculum and aerophyles are located at the apiculus area. In the circular operculum, there are 10 aerophyles concentrated on the side of the hair shaft surface that are shaped like a dome. Three aerophyles in the center are surrounded by 7 aerophyles. Each aerophyle is dome shaped with a diameter of $65{\mu}m$ and a respiratory pathway with a $15{\sim}25{\mu}m$ opening at the center. On the cut surface where the operculum is separated as the egg hatches, long grooves about $1{\mu}m$ thick are uniformly formed transversely. These long grooves facilitate the separation of the operculum through body expansion at the time of hatching.

Studies on the pediculosis of Korean native goats (Capra hircus coreanae) in Chonnam area (전남지방에서 사육되는 흑염소의 이감염증에 관한 연구)

  • Kwag, Hyoung-Su;Lee, Jeong-Chi;Shin, Sung-Shik;Kim, Sang-Ki;Lee, Chai-Yong;Lee, Chung-Gil
    • Korean Journal of Veterinary Research
    • /
    • v.42 no.4
    • /
    • pp.531-536
    • /
    • 2002
  • A total of 576 fatteners selected randomly from 6 Korean native goat farms in Chonnam area were examined for louse infestation from March 1997 to February 1998. The lice collected from the goats were identified. Four goat farms were selected and 20 goats were randomly chosen from each farm; blood samples were taken from the goats seasonally and examined hematologically and chemically. It was found that 495 out of 576 goats (85.9%) were infested with lice. The infestation rate in one of the 6 farms reached 92.9%. Two species of lice were identified; Linognathus sp. (sucking lice) and Bovicola sp. (biting lice). Goats infested with lice showed higher values in white blood cell, neutrophil and eosinophil counts than the goats not infested counterparts; same trend was seen with total protein, albumin and globulin concentrations. The results of this study indicate that louse infestation in the goat should be investigated extensively in view of the goat farming.

Determination of Knockdown Resistance (kdr) Allele Frequencies (T929I mutation) in Head Louse Populations from Mexico, Canada, and Peru

  • Ponce-Garcia, Gustavo;Villanueva-Segura, Olga K.;Garza-Elizondo, Karina;Villegas-Ramirez, Heriberto M.;Fernandez-Salas, Ildefonso;Rodriguez-Sanchez, Iram P.;Dzul-Manzanilla, Felipe;Flores-Suarez, Adriana E.
    • Parasites, Hosts and Diseases
    • /
    • v.60 no.3
    • /
    • pp.217-221
    • /
    • 2022
  • The head louse Pediculus humanus capitis (De Geer) is a hematophagous ectoparasite that inhabits the human scalp. The infestations are asymptomatic; however, skin irritation from scratching occasionally may cause secondary bacterial infections. The present study determined the presence and frequency of the knockdown resistance (kdr) mutation T929I in 245 head lice collected from Mexico, Peru, and Canada. Head lice were collected manually using a comb in the private head lice control clinic. Allele mutation at T9291 was present in 100% of the total sampled populations (245 lice) examined. In addition, 4.89% of the lice were homozygous susceptible, whereas 6.93% heterozygous and 88.16% homozygous were resistant, respectively. This represents the second report in Mexico and Quebec and fist in Lima.

A Case of Phthiriasis Palpebrarum in the Eyelids of a Child (소아 안검에서 관찰된 사면발이증 1례)

  • Lee, Jong Hyuck;Rah, Sang Hoon;Kim, Yoon Hee;Song, Won Seok
    • Clinical and Experimental Pediatrics
    • /
    • v.45 no.6
    • /
    • pp.800-803
    • /
    • 2002
  • A two year old male child complained of foreign body sensations bilaterally, and an itching sensation at both upper and lower eyelids for 2 months of duration. He was diagnosed with Phthiriasis palpebrarum after observation of adult louse and nits on slit-lamp examination. The treatment was accomplished by mechanical removal of the lices and nits by forceps and scissors, and then irrigation with 20% fluorescein was done under general anesthesia. Antibiotic eyedrops and ointment were applied to both eyes. The morphologic evaluation was performed with light microscopy and scanning electron microscopy. The follow-up interval was every weeks for one month and no louse or nit was found under slit-lamp examination. So we concluded that the Phthiriasis palpebrarum was eradiated completely. We report a case of Phthriasis palpebrarum had been review of the literatures.

Cultivation of Peach by Orgnic Farming (유기농업에 의한 복숭아 재배)

  • 이석영;유창성
    • Korean Journal of Organic Agriculture
    • /
    • v.6 no.1
    • /
    • pp.45-50
    • /
    • 1997
  • Cultivation of peach by organic farming and cooperative form of work was attempted. The compost was made from egg shells and bread residues(bakery residues), falling leaves, and weeds. The cooperative teams of work were farmers, students and members of citizens' movement. The responses of participants for composting, though it's laboriousness and dirtiness, were favorable with feeling of doing good for social services. 20 chickens were raised in the peach orchard as one of the mixed farming. The pH and Ca content of ripened compost were 7.7 and 1.57 %, respectively. Controlling Aphids(plant louse)by ladybug was observed vividly. The size and sugar concentration were comparable to standard values even though rainy season and the number of damaged fruits were less than half(40%).

  • PDF

Study of Literature on RADIX STEMONAE(Investigation of efficacy and pharmacological action on RADIX STEMONAE) (백부근(百部根)에 관(關)한 문헌적(文獻的) 고찰(考察) (효능(效能) 및 약리작용(藥理作用)을 중심(中心)으로))

  • Choi Hae-Yun;Kim Jong-Dae
    • Herbal Formula Science
    • /
    • v.7 no.1
    • /
    • pp.65-76
    • /
    • 1999
  • According to the study of literature on RADIX STEMONAE about its efficacy, pharmacological action, and clinical adaptive disease, the results are as follows; 1. About the efficacy of RADIX STEMONAE, it is known as moistening the lungs to arrest cough, and intestinal parasites from ancient to now, and dispelling phlegm is also known. 2. The clinical adaptation of RADIX STEMONAE is chronic bronchitis, pertussis, pulmonary tuberculosis in respiratory disease, and ascaricide for Ascaris, Enterobius vermicularis or eczema, pruritus, destroy louse for endermic liniment. 3. The pharmacological action of RADIX STEMONAE are antitussive, tuberculostatic, anthelmintic, antibacterial, antivirus, antifungal. 4. The antitussive mechanism of RADIX STEMONAE is central inhibitor for cough center of medulla oblongata, and the mechanisms of bronchial smooth muscle relax, and expectorant is also known.

  • PDF

Implementing of Efficient Looms Management System (효율적인 직기 관리 시스템의 구현)

  • 전일수;부기동
    • Journal of Korea Society of Industrial Information Systems
    • /
    • v.8 no.3
    • /
    • pp.32-41
    • /
    • 2003
  • In this paper, we implemented a looms management system which supports remote monitoring and scientific management of the looms. In the implemented system, the layout of the looms is placed in the user interface, and each loom's operating state and rate are automatically represented there. The implemented system has aggregate query processing functions for the looms existing in the selected area by the louse and it also has high level query processing functions to support the chart and pivot table; it can be used as a decision support system. The proposed system can detect temporal or persistent problems of the looms. Therefore, it can be used to raise the productivity and to reduce the cost in textile companies by coping with the situation properly.

  • PDF

Recent Trend and Treatment of Parasitic Infections in Children (소아청소년 기생충 감염의 최신 경향 및 치료)

  • Choi, Min-Ho
    • Pediatric Gastroenterology, Hepatology & Nutrition
    • /
    • v.11 no.sup1
    • /
    • pp.38-43
    • /
    • 2008
  • Enterobiasis and head lice infestations, contact-borne parasitic diseases, are the most prevalent parasitic infections of children in Korea, and they are transmitted by close contact with infected persons. They are not of major concern in public health, therefore their importance in children's health care are overlooked in Korea. Egg positive rates of Enterobius vermicularis have been reported to be 10~20% among children in kindergartens and primary schools. Enterobiasis is diagnosed by scotch tape anal swab, but repeated examination is necessary for accurate diagnosis. Albendazole or mebendazole are extremely effective for treatment, however, reinfections usually occur if treatment is not repeated at least three times at a 3-week-interval, targeting the whole family members including the patients. Environmental sanitation and health education are also necessary to guarantee the successful treatment of enterobiasis. Head lice infestation is still an indication of public health status. Children of 3 to 12 years old and their families have infestations more frequently, and girls have more than boys. Diagnosis can be made by identification of live lice or nits on the head. Pediculicides are effective treatment of infestations, however they do not kill nits completely, requiring second treatment. Recently wet combing is preferred as an alternative by parents in England because of possible toxicity of drugs and resistance of lice. It is impossible to completely prevent enterobiasis and/or head lice infestations. Therefore, mass screening and prevention are required, and, in local clinics, a thorough evaluation of the symptoms and past history, and appropriate laboratory tests are necessary.

  • PDF

A Study on the Characterization of Post-Modernism Interior Design inAttri Language bute (언어성에서 본 포스트모더니즘 실내디자인의 특성연구)

  • 이춘섭
    • Archives of design research
    • /
    • no.18
    • /
    • pp.15-23
    • /
    • 1996
  • Interior is composed of void spaces decided by many substances and the function of the spaces which creat its valuation. Accordingly interior space makes peculiar forms by synthesizing each interior elements and its abstractness. Therefore characteristic of the expressed word and symbolic system become interior wholeness. The focus of this paper is to analyze interior words and the symbolic systems scientifically. The content is composed of 5 major parts. The 1st and 2nd chapter deal with Introduction and the Characterization of Interior Design. Linguistic symbol and metaphor which decide Post-Modern interior style were studied in the 3rd chapter. In the 4th chapter. this paper analysed linguistic character of interior words which need to express character of tradition. decoration, and publicity, expccially through code and metaphor. Finally Thematic I-louse library interior space designed by Charles Jencks was linguistically researched as a study model.

  • PDF

A Study on the Housing Satisfaction of Elderly Living Alone or with Spouse - A Comparision between Urban and Rural Area - (단독가구노인의 주거만족도에 관한 연구 - 도시.농촌지역간의 비교를 중심으로 -)

  • 이경희;장온정
    • Journal of Families and Better Life
    • /
    • v.9 no.2
    • /
    • pp.225-240
    • /
    • 1991
  • The purpose of this study is to find the main factor which influences the housing satisfaction of elderly who lives alone or with spouse and to make it sure that housing satisfaction is an important factor to life satisfaction of elderly. The specific purpose of this study is as follows; 1) How does the locus of control of elderly influence a housing satisfaction\ulcorner 2) How does the housing characteristics of elderly influence on the housing satisfaction and this relationship has any difference between urban and rural area. 3) Which variables influence upon the housing satisfaction and life satisfaction of elderly and how much do they influence \ulcorner The locus of control scale, housing satisfaction scale. life satisfaction scale were composed on the basis of precedent researches. For this study 202 elderly sho live in urban and rural area ere interviewed. To analyze the data, such as F-test, t-test, two-way ANOVA, Multiple regression analysis were used with SPSS program. The results are as follows; 1) The interrelation between locus of control and housing satisfaction is as follows. Namely , if he believes in his deeds and will rater than his fate, he feels more housing satisfaction. 2)the housing satisfaction of the elderly was found to be influenced by location, Namely, the elderly living in the urban area feels more housing satisfaction, especially he lives in apartment and unshared house. On the contrary, the elderly living in the rural area was not affected by housing type and the number of household who live together, The housing satisfaction of the elderly living in the rural area or the urban area equally influenced by the housing tenure, heating system, bathroom facility, flush toilet, and convenient service form the outside. 3) The main factoers which influence the housing satisfaction of the single household elderly are bathroom facility louse of control and income. When we concern about the location in urban area the housing satisfaction of the elderly were mainly influenced by income, but in the rural area, they were influenced by the service facility from the outside. As a Conclusion, the main factor which influenced life satisfaction of the elderly proved to be housing satisfaction inn both rural and urban area.

  • PDF