• 한국염색가공학회지
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• 제32권4호
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• pp.232-238
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• 2020

Duck down is a feather of waterfowl and is used as an accessory for bedding products such as evil, pillow and outdoor sleeping bags due to its soft and bulky characteristics. Down is used mainly for winter outdoor such as padding and jumpers because of its excellent thermal insulation effect. Down wear is known as a product with high added value. Down is processed and sanitized because a large amount of oil and fat, bacteria, dust, insects, and soil are mixed. In particular, if the proper amount of oil and fat is not removed, it may cause odor or bacteria, and since the fishy smell peculiar to down and harmful VOCs (toluene, benzene, etc.) are released, there is a need to suppress the occurrence of bacteria through the provision of antibacterial function. In this study, we investigated the substances that cause the fishy odor of down, and confirmed the effect on the deodorization and antibacterial properties of down according to processing agents and processing conditions in order to impart deodorant and antibacterial properties to down.

• Journal of Animal Science and Technology
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• 제64권4호
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• pp.621-639
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• 2022

Cortisol and corticosterone, hormones traditionally considered biomarkers of stress, can be measured in fluid biomatrices (e.g., blood, saliva) from live animals to evaluate conditions at sampling time, or in solid biomatrices (e.g., hair, feather) from live or dead animals to obtain information regarding long-term changes. Using these biomarkers to evaluate physiological stress responses in domestic animals may be challenging due to the diverse characteristics of biomatrices for potential measurement. Ideally, a single measurement from the biomatrix should be sufficient for evaluating chronic stress. The availability of appropriate and cost-effective immunoassay methods for detecting the biomarkers should also be considered. This review discusses the strengths and limitations of different biomatrices with regard to ensuring the highest possible reliability for chronic stress evaluation. Overall, solid biomatrices require less frequent sampling than other biomatrices, resulting in greater time- and cost-effectiveness, greater ease of use, and fewer errors. The multiplex immunoassay can be used to analyze interactions and correlations between cortisol and other stress biomarkers in the same biomatrix. In light of the lack of information regarding appropriate biomatrices for measuring chronic stress, this review may help investigators set experimental conditions or design biological research.

• 한국의상디자인학회지
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• 제20권1호
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• pp.29-47
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• 2018

This study aims at looking into women's costume style seen in 18th century to 19th century, and reason out a major decoration, then the formative and aesthetic characteristics of the decoration were analyzed. Research results are same as follows. Firstly, the style of women's costumes in the 18th and 19th century includes the Rococo style, Polonaise style, Neo-classic style, Romantic style and Bustle-style. The main decorations shown in these styles are the gather pleats drape of Fold decoration, the flat embroidery quilting of embroidery decoration, and the ribbon braid fringe button feather and fur of attachment decoration. Secondly, the analyzed results found the formative and aesthetic characteristics of the decoration in the 18th and 19th century women's costumes. Fold decorations appeared as a voluminous property in the form of gown mantua jacket pelisse and dress. Especially, femininity and exaggeration were expressed through greatly inflated skirts. Embroidery decoration appeared as planarity by making patterns of gown mantua jacket stomacher overskirt coat dress shawl and dolman. Especially, exaggeration and extravagance were expressed through embroidered mantua surfaces with peony rose poppy primrose daffodil morning glory tulip leaf and lattice patterns in variety of colored silk threads. Attachment decorations were mixed with elements of heterogeneity added to jackets, coats, gowns, petticoats, stomachers, mantuas, pelisses, mantles, dolmans, capes, overskirts and dresses. In particular, exaggeration and extravagance strongly expressed through the decoration with white fox fur at the hemline, neckline and sleeves of cream colored silk dolman.

• ALGAE
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• 제25권3호
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• pp.141-153
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• 2010

Seagrass epiphyte blooms potentially have important economic and ecological consequences in Tampa Bay, one of the Gulf of Mexico's largest estuaries. As part of a Tampa Bay pilot study to monitor the impact of environmental stresses, precise characterization of epiphyte diversity is required for efficient management of affected resources. Thus, epiphyte diversity may be used as a rational basis for assessment of ecosystem health. In May 2001, epiphytic species encompassing green, brown and red macroalgae were manually collected from dense and sparse seagrass beds of Thalassia testudinum and Syringodium filiforme. A total of 20 macroalgal epiphytes, 2 Chlorophyta, 2 Phaeophyta, and 16 Rhodophyta, were found on T. testudinum and S. filiforme seagrass at the four sampling sites (Bishop Harbor, Cockroach Bay, Feather Sound, and Mariposa Key). The Rhodophyta, represented by 16 species, dominated the numbers of species. Among them, the thin-crusted Hydrolithon farinosum was the most commonly found epiphyte on seagrass leaves. Species number, as well as species frequency of epiphytes, is higher at dense seagrass sites than sparse seagrass sites. Four attachment patterns of epiphytes can be classified according to cortex and rhizoid development: 1) creeping, 2) erect, 3) creeping & erect, and 4) erect & holding. The creeping type is characterized by an encrusting thallus without a rhizoid or holdfast base. Characteristics of the erect type include a filamentous thallus with or without a cortex, and a rhizoid or holdfast base. The creeping and erect type is characterized by a filamentous thallus with a cortex and rhizoid. A filamentous thallus with a cortex, holdfast base, and host holding branch is characteristics of the erect and holdfast attachment type. This study characterized each species found on the seagrass for epiphyte identification.

• Asian-Australasian Journal of Animal Sciences
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• 제16권1호
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• pp.50-56
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• 2003

An experiment was carried out to compare the body weight, shank length, rectal temperature, comb area, abdominal fat, blood parameters and bone traits of capon, slip and intact birds in Taiwan country chicken cockerels. One hundred and sixty-six Taiwan country chicken cockerels were randomly assigned to caponized or intact male groups. Caponized birds were surgically altered at 10 weeks old and raised to 28 weeks old. At 28 weeks of age, the capons were separated into capon and slip groups, depending on the atrophy of the comb and wattle in size. The results showed that body weight and shank length in slips were significantly (p<0.05) greater than in intact birds. Intact birds had the highest (p<0.05）feather scores and the lowest (p<0.05) rectal temperature. Compared with intact birds and slips, capons had a significantly (p<0.05) smaller comb area. Bone percentage, stress and cortical thickness, and bone and ash calcium content and plasma testosterone concentration, in intact birds were the highest (p<0.05) followed by slips and capons. However, intact birds had the lowest (p<0.05) plasma ionized calcium and phosphorus concentrations. Bone and ash manganese contents in capons were significantly (p<0.05)lower than those in others. These findings support the hypothesis that androgenic effects on secondary sexual characteristics are stronger than anabolic growth promoting response. Androgens can directly influence calcium fluxes in male chickens. Caponized caused a reduction in the bone percentage, stress, cortical thickness and bone calcium content.

• Journal of Veterinary Science
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• 제23권5호
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• pp.67.1-67.11
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• 2022

Background: Budgerigar fledgling disease polyomavirus (BFDV) is the pathogen that causes budgerigar fledgling disease in psittacine species. The clinical signs of PBFV infection include ascites, hepatitis, and crop stasis. BFDV is associated with a high mortality rate in nestling birds. In contrast, adult birds only have mild symptoms such as feather dystrophy. Objectives: This study aimed to determine the prevalence, genetic characteristics, and phylogenetic analysis of BFDV in pet parrots in Korea. Methods: Fecal and tissue samples were collected from 217 pet parrots from 10 veterinary hospitals including Chungbuk National University Veterinary Hospital. The molecular screening was performed using polymerase chain reaction (PCR) analysis of the small t/large T antigen gene segment. Full-length genome sequencing with the Sanger and phylogenetic analysis were performed on BFDV-positive samples. Results: The PCR results based on the small t/large T antigen gene marker indicated that BFDV DNA was present in 10 out of 217 screened samples. A whole-genome sequence was obtained from six strains and phylogenetic analysis revealed no significant relationship existed between the species and geographical locations amongst them. Conclusions: The prevalence of BFDV infection in South Korea is not high when compared to the prevalence of BFDV in other parts of the world, however, it has been reported sporadically in various species and geographic locations. The whole-genome analysis revealed 0.2%-0.3% variation in intragenomic homogeneity among the six strains analyzed. Korean strains are separately on the phylogenetic tree from their counterparts from China and Japan which might reflect the substantial genetic variation.

• Journal of Microbiology and Biotechnology
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• 제18권3호
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• pp.410-416
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• 2008

The gene SfXyn10, which encodes a protease-resistant xylanase, was isolated using colony PCR screening from a genomic library of a feather-degrading bacterial strain Streptomyces fradiae var. k11. The full-length gene consists of 1,437bp and encodes 479 amino acids, which includes 41 residues of a putative signal peptide at its N terminus. The amino acid sequence shares the highest similarity (80%) to the endo-1,4-${\beta}$-xylanase from Streptomyces coelicolor A3, which belongs to the glycoside hydrolase family 10. The gene fragment encoding the mature xylanase was expressed in Escherichia coli BL21 (DE3). The recombinant protein was purified to homogeneity by acetone precipitation and anion-exchange chromatography, and subsequently characterized. The optimal pH and temperature for the purified recombinant enzyme were 7.8 and $60^{\circ}C$, respectively. The enzyme showed stability over a pH range of 4.0-10.0. The kinetic values on oat spelt xylan and birchwood xylan substrates were also determined. The enzyme activity was enhanced by $Fe^{2+}$ and strongly inhibited by $Hg^{2+}$ and SDS. The enzyme also showed resistance to neutral and alkaline proteases. Therefore, these characteristics suggest that SfXyn10 could be an important candidate for protease-resistant mechanistic research and has potential applications in the food industry, cotton scouring, and improving animal nutrition.

• Journal of Preventive Medicine and Public Health
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• 제42권5호
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• pp.283-292
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• 2009

Objectives : This study was performed to assess the community capacity building ability of health promotion workers of public health centers and to identify influential factors to the ability. Methods : The subjects were 43 public officers from 16 public health centers in Busan Metropolitan City. Questionnaire was developed based on 'Community Capacity Building Tool' of Public Health Agency of Canada which consists of 9 feathers. Each feather of capacity was assessed in 4 point rating scale. Univariate analysis by characteristics of subjects and multivariate analysis by multiple regression was done. Results : The mean score of the 9 features were 2.35. Among the 9 feathers, 'Obtaining resources' scored 3.0 point which was the highest but Community structure scored 2.1 which was the lowest. The mean score of the feathers was relatively lower than that of Canadian data. The significant influential factors affecting community capacity building ability were 'Service length', 'Heath promotion skill level', 'Existence of an executive department', and 'Cooperative partnership for health promotion'. According to the result of multiple linear regression, the 'Existence of an executive department' had significant influence. Conclusions : Community capacity building ability of subjects showed relatively lower scores in general. Building and activating an executive department and cooperative partnerships for health promotion may be helpful to achieve community capacity building ability.

• 자원ㆍ환경경제연구
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• 제25권4호
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• pp.495-516
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• 2016

본 연구는 국제 원유가격의 변동에 따른 수송용 유류제품 가격의 비대칭성(rockets and feather)을 오차수정모형을 사용하여 분석한다. 회귀분석결과에 따르면, 모든 수송용 유류제품에서 비대칭성 현상이 일관성 있게 나타났으며, 특히 고급휘발유에서는 타 유종에 비해서 비용 상승기와 비용 하강기에 모두에서 비용의 변화의 충격에 민감하게 반응하는 것으로 추정되었다. 이는 비용상승기의 경우, 마진이 높은 고급휘발유의 특성상, 이를 빠르게 반영하는 것은 이윤극대화를 추구하는 기업의 합리적인 반응일 것으로 추정된다. 그러나 비용이 하락할 경우에 고급휘발유가 타 유종에 비해서 빠르게 하락하는 현상은, 고급휘발유 가격이 상승할 때, 일반휘발유로 이동했던 소비자들과 고급휘발유에 대한 잠재적 수요를 가진 일반 휘발유 소비자들을 고급휘발유 소비로 끌어들일 수 있는 유인이 존재하기 때문으로 판단된다.

• Journal of Microbiology and Biotechnology
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• 제27권2호
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• pp.271-276
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• 2017

A highly thermostable ${\beta}-(1-4)-glucanase$ (NA23_08975) gene (fig) from Fervidobacterium islandicum AW-1, a native-feather degrading thermophilic eubacterium, was cloned and expressed in Escherichia coli. The recombinant FiG (rFiG) protein showed strong activity toward ${\beta}-{\small{D}}-glucan$ from barley (367.0 IU/mg), galactomannan (174.0 IU/mg), and 4-nitrophenyl-cellobioside (66.1 IU/mg), but relatively weak activity was observed with hydroxyethyl cellulose (5.3 IU/mg), carboxymethyl cellulose (2.4 IU/mg), and xylan from oat spelt (1.4 IU/mg). rFiG exhibited optimal activity at $90^{\circ}C$ and pH 5.0. In addition, this enzyme was extremely thermostable, showing a half-life of 113 h at $85^{\circ}C$. These results indicate that rFiG could be used for hydrolysis of cellulosic and hemicellulosic biomass substrates for biofuel production.