• Journal of Chest Surgery
• /
• v.37 no.3
• /
• pp.292-296
• /
• 2004

Cryptococcus neoformans is a ubiquitous fungus found worldwide, particularly in soil contaminated by pigeon drop- pings. Pulmonary cryptococcosis occurs rarely in immunocompetent individuals. The risk of cryptococcal infection increases with the degree of immunal compromise, in human immunodeficiency virus infection especially. Pulmonary cryptococcosis is most frequently encountered as asymptomatic single or multiple pulmonary nodules found by routine chest x-ray examination. The diagnosis is most often made in these situations by the histology of the resected lesion. Acute progressive pneumonia may occur, with symptoms of cough, sputum production, fever, and weakness. The clinical picture is not pathognomonic. The yeasts are stained well by any of the special stains for fungi. Treatment is now indicated for all cases given a diagnosis of cryptococcosis, even if the diagnosis has been made by resecton of a solitary, asymptomatic pulmonary nodule.

• Journal of Veterinary Clinics
• /
• v.13 no.2
• /
• pp.198-203
• /
• 1996

일반적인 치료에 반응을 나타내지 않는 호흡곤란증에 걸린 4년령의 Shepherd개에서 피부, 눈, 림프절의 병변을 동반한 치명적인 파종성 크립토콕스병이 진단되었다. 세포학적검사에 의해 난원형 내지 구형이고, 두꺼운 협막을 갖고 있는, 형태학적으로 Cryptococcus neoformans와 일치하는 효모균이 증명되었다. 이 병원체는 혈액, 오줌, 콧물, 견갑전림프절 흡인물, 피부생검 시료, 피부 면봉 시료 등을 25$\circ $C의 Pal씨 배지에 접종하여 용이하게 분리되었다 배양물을 PHOL염색액으로 염색하여 현미경으로 검사한 결과 얇은 막에 싸인 발아를 나타내거나. 나타내지 않는 구형 내지 난원형의 효모균이 증명되었다. 이 개는 ketaconazole 로 치료를 시작 한 후 6일만에 폐사하였다. 공기, 흙, 비둘기 배설물, 톱밥 등을 Pal씨 배지에 접종하여 C.neoformans가 배양됨으로써 역학적으로 환경이 병원소 역할을 한 것으로 판단되었다. 환축과 환경으로부터 분리된 균주는 세밀한 동정결과 neoformans (serotype AD)에 속하며, Filobasidiella neoformans "alpha" mating type을 나타내었다. 이 연구결과, Pal씨 배지가 크립토콕스병의 조기진단과 역학적 조사에 훌륭한 감별배지라는 것이 입증되었다. 개량된 Pal씨 배지는 C. neoformans의 genetic crossing을 판단하는데 성공적으로 사용할 수 있었다.

• Journal of Chest Surgery
• /
• v.42 no.1
• /
• pp.123-126
• /
• 2009

Cryptococcosis is a subacute or chronic inflammation that's caused by infection from cryptococcus neoformans in the soil or dust that's contaminated by pigeon droppings. Pulmonary cryptococcosis occurs in immunocompromised patients, and particularly in HIV positive patients, but it rarely occurs in immunocompetent individuals. It is most often detected as asymptomatic single or multiple nodules that are found by chest X-ray examination. In these situations, the diagnosis for most cases is made by the histology of the resected lesion. We report here on a case of solitary nodular pulmonary cryptococcosis that occurred in a 32 years old female patient who underwent thyroidectomy for treating her thyroid cancer.

• Journal of Environmental Impact Assessment
• /
• v.19 no.5
• /
• pp.483-495
• /
• 2010

The passenger pigeon (Ectopistes migratorius) was a species of pigeon that was once the most common bird in North America. According to some ornithologists, the number of passenger pigeons is estimated as many as five to six billions at the time when the first Europeans arrived there. But this species became extinct in 1914. There were a multiplicity of causes in the extinction; first, the extension of telegraph lines and railroads into the Middle West of the USA beginning in 1850s, second, the loss of vast feeding, nesting, and roosting sites of the passenger pigeon due to the massive deforestation, third, the rapid population growth of the USA during nineteen century, fourth, the commercial exploitation of the species, and finally, the infirm and weak protective efforts. Some important lessons can be learned from the extinction of the passenger pigeon. First, it shows how much critical the public interest is for a successful conservational movement. Second, it illustrates the need for strong laws and practices in the protection of an endangered species from going extinct. Third, the fate of the passenger pigeon proves a very important principle in conservational biology. That is, for each species (bird or other animal) there is a minimum population to sustain the species. Ecologists generally believe that the extinction of the passenger pigeon was due to the loss of their numbers below the minimum owing to overexploitation.

• Korean Journal of Veterinary Research
• /
• v.30 no.4
• /
• pp.427-434
• /
• 1990

The purpose of this study was to examine O serotypes, colicin and hemolysin production. antibiotic susceptibility and haemagglutinating ability to animal erythrocytes among Escherichia coli strains isolated from pigeons in Taegu province. Of the 166 strains isolated, 28 strains (16.9%) were classified into 6 O serotypes and their types were O20(42.9%), O15(17.9%), O139(14.3%), O101(10.7%), O149(7.1%) and O8(7.1%). Of the 166 strains isolated, none was hemolytic and 3(1.8%) were colicinogenic. Antibiotic susceptibility test of Escherichia coli isolates was performed by the agar dilution method, using ampicillin, chloramphnicol, gentamicin, rifampicin, streptomycin (Sm), nalidixic acid, sulfadimethoxine and tetracycline (Tc). Forty four strains (26.5%) were resistant to one or more drugs and the most common resistance patterns were SmTc (27.3%). Of the 44 drug resistant strains, 6 strains haemagglutinated erythrocytes of chicken, guinea pig and 2 of the 6 strains agglutinated goose erythrocytes.

• Journal of KIISE:Software and Applications
• /
• v.35 no.2
• /
• pp.81-90
• /
• 2008

BCC(Boolean Cardinality Constraint) is to select one boolean variable from n different variables. It is widely used in many areas including software engineering. Thus, many efficient encoding techniques of BCC into CNF have been studied extensively In this paper we analyze some representative encodings with respect to flexibility as well as efficiency. In addition we use a visualization tool to draw the CNF clauses generated from each encodings. Visualizing the clauses exposes a hidden structure in encodings and makes to compare each encodings on the structure level, which is one of the prominent achievement in our work compared to other works. And we apply our analysis on the pigeon-hole problems to have confidence. In our experimental settings, the commander encoding shows the best performance.

• Korean Journal of Veterinary Research
• /
• v.30 no.2
• /
• pp.193-201
• /
• 1990

An attempt was made to isolate Salmonella(S) organisms from a total of 4,587 fecal samples of birds during the period from May 1987 to March 1988, and serotype and biotypes of the isolates were also investigated. One hundred and sixty-six Salmonella strains were isolated from 151(3.3%) of 4,587 fecal samples of birds, and their serotype was all identified as S typhimurium var copenhagen. The positive samples of S typhimurium var copenhagen were 149 samples(5.1%) in pigeons and 2 samples (0.8%) in aquatic birds. No Salmonella was obtained from ducks, pheasant, and other birds. The isolation frequencies of S typhimurium var copenhagen from pigeons varied from 1.1 to 12.8% at 5 parks, it was higher in September and November. Biotypes of 166 S typhimurium var copenhagen strains isolated from pigeons and aquatic birds were all biotype 10 according to Brandis' method, and were biotype 25hi (78.3%), 27 hi (14.5%), 25 fhi (3.6%), 25 bhi (1.8%), 27 bhi (0.6%), 27 hiz (0.6%), and 9 hi (0.6%) according to Duguid's scheme. Appearance of different biotypes indicated the occurrence of exotic infection sources on the parks.

• English & American cultural studies
• /
• v.9 no.1
• /
• pp.27-50
• /
• 2009

Henry James tries to describe minutely in The Wings of the Dove the process in which a bad faith grows, is practiced in one's self, and spreads to a society. Through this fictional specificity, he embodies an analogy between a bad faith and social role-playing. That is, he shows, through the main characters such as Milly Theale and Merton Densher, how self interacts with the other and a society. In this interaction, there is some essential element, namely, an organic relationship between a self identity and a social role-model, which James describes very meticulously. Therefore, the characters are depicted as seeking to define self identity and eventually distorting it. Thus, The Wings of the Dove can be seen as a tragedy in which the characters who have this wrongly distorted self identity come to experience its effects. The distorted self identity appears to function as a social role. Milly distorts her true self identity by internalizing a dove-image for it. This results in a bad faith. Moreover, the American girl Milly utilizes it as a convenient social role-model which makes it easy for her to interact and engage with the others in the European society. Merton also evades adventurous and painful self-reflection and self-criticism by sticking to the mannerisms of gentlemanship and imitates the sublimity which Milly shows him. Thus, Milly and Merton clearly omit self-inspection and self-inquiry for the contact between a free self and a society, which is essential to obtain social objectivity, namely, intersubjectivity.

• Korean Journal of Organic Agriculture
• /
• v.21 no.4
• /
• pp.617-627
• /
• 2013

This study was conducted to survey the current pest occurrence and grower's pest management practices, and to investigate biodiversity including birds, snakes, rodents, and amphibians in organic pear orchards. From the questionnaires and field survey of 22 organic orchards in 2010, the materials such as lime sulphur, plant extracts and their mixtures with microorganisms, and oils were preferred over insecticides. Scab, mealybugs, woollybugs and barkminers were the major pests for organic pear growers. Environment-friendly fungicides and insecticides were applied 9 to 10 and 5 to 6 times respectively. Incidence and severity of scab on Niitaka pear fruits in organic orchards was higher than in conventional ones. Whereas for mealybugs there was no significant difference between organic and conventional orchards. Pear fruits in organic orchards were significantly smaller than those of non-organic orchards. For the biodiversity of amphibians, snakes, pheasants, and rodents, there was no significant difference between organic and conventional orchards, but Rufous turtle doves were monitored more in organic areas than in conventional ones.

• Korean Journal of Poultry Science
• /
• v.27 no.1
• /
• pp.63-71
• /
• 2000

The testis is an extremely heterogeneous organ, containing numerous compartments types. Morphometric studies were performed of 3 avian species (pigeon, pheasant and chicken) to determine volume density absolute volume, numerical density, total number of serminiferous tubule components, and sperm production, especially those related to the Sertoli cell, and to make comparisons among the species. Volume density of seminiferous tubule components per testis was determined by point counting method. Testis volume and sperm production were measured by routine techniques. Numerical density (the number of cells per unit volume of testis) of seminiferous tubule components per testis was determined by morphometry (Floderus method). The volume density of seminiferous tubules per testis was 91.58, 92.18 and 94.21% in pigeon, pheasant, and chicken, respectively. The volume density of spermatogonium, spermatocyte, spermatid, spermatozoon, and Sertoli cell did not produce significant changes in the three species. The absolute volume of spermatogonium, spermatocyte, spermatid, and Sertoli cell showed significant changes in the three species (p<0.05). The average volume of Sertoli cell ranged from 758.34(pheasant) to 1,212.9 ㎛$^3$(chicken) and was not significantoy different in the three species(p>0.05). The number of Sertoli cells per testis showed significant differences in the three species : 34.52 $\times$10(sup)6, 186.82$\times$10(sup)6, 810.62$\times$10(sup)6 in pigeon, pheasant, and chicken, respectively(p<0.05). The sperm production was significantly different in the three species : 3,018$\times$10(sup)6, 993.9$\times$10(sup)6, and 8.9$\times$10(sup)6 in chicken, pheasant, and pigeon, respectively(p<0.05). These results suggest that number of Sertoli cells may be more important than Sertoli cell size in explaining the difference in sperm production among the three species.