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Three new harpacticoid copepods for Korea from marine interstitial habitats

  • Karanovic, Tomislav
    • Journal of Species Research
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    • v.8 no.3
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    • pp.268-282
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    • 2019
  • Recent integrative taxonomic research demonstrated a high endemism of Korean copepods, with closest relatives usually in neighboring countries. Although Korean fauna could be considered well-studied, some marginal habitats still provide unexpected discoveries of copepods described from distant parts of the world. Here I report three such examples. Two belong to the family Tetragonicipitidae: Phyllopodopsyllus thiebaudi santacruzensis Mielke, 1989 and Laophontella horrida dentata Mielke, 1992; one to the family Ancorabolidae: Laophontodes norvegicus George, 2018. Scanning electron microscope photographs are provided for the first time for all three species, revealing unknown details of complex three-dimensional structures and ornamentation of somites. Phyllopodopsyllus thiebaudi santacruzensis was described from the Galapagos Islands, while Laophontella horrida dentata was described from the Pacific Coast of Costa Rica; for both this is the second record, which extends their range into the Western Pacific. Laophontodes norvegicus was described from Norway; this Korean record is its first in the Pacific. The first species is represented in my samples by numerous males, females, and juveniles. However, the second one is represented by one adult male and one juvenile female, while the third is represented by a single adult male, which might suggest that the marine interstitial is not their preferred habitat in Korea.

Gnaphalium tranzschelii Kirp. (Asteraceae): An unrecorded species from Korea

  • Lee, Dong Hyuk;Byeon, Jun Gi;Heo, Tae Im;Park, Byeong Joo;Lee, Jun Woo;Kim, Ji Dong;Choi, Byoung Hee
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2019.04a
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    • pp.78-78
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    • 2019
  • Gnaphalium L. is a small herbaceous genus comprising up to 80 species in worldwide (Asia, North to South America, Africa, and Oceania). This genus is highly polymorphic which embrace uncommon broad morphological boundary, and thus further studies were needed to proper taxonomic delimitations for the genus and its relatives. Gnaphalium uliginosum L. was usually found in moist sites such as margins of lake, pond, reservoir, stream banks and paddy field. This squat plant is solely known species in Korean Gnaphalium. During the revisionary study of the tribe Gnaphalieae (Asteraceae) in Korea, however, we found several materials in domestic herbaria (e.g., SNU, KWNU) that identified as G. uliginosum or Gamochaeta pensylvanica (Willd.) Cabrera collected from central to northern Korea, but clearly differ to the morphology of G. uliginosum. The external morphology of the materials is seemingly the only feature at odds with G. uliginosum. However, its morphological characters such as tall erected stems (ca. 30cm), hairs on seeds and whitish tomentose hairs on the whole plants are easily distinguished from G. uliginosum, and rather it looks like G. tranzschelii Kirp. Although the name G. tranzschelii have been treated as synonym of G. uliginosum by several authors, its distinct morphology might be sufficient to separate to two independent taxa. Generally, the morphological polymorphisms and hybridization of G. uliginosum complicate the taxonomy of the species, and thus further investigation for their habitat, distribution and morphology were needed to their taxonomic entity.

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Recent Advance in Very Early Onset Inflammatory Bowel Disease

  • Shim, Jung Ok
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.22 no.1
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    • pp.41-49
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    • 2019
  • Recent studies on pediatric inflammatory bowel disease (IBD) have revealed that early-onset IBD has distinct phenotypic differences compared with adult-onset IBD. In particular, very early-onset IBD (VEO-IBD) differs in many aspects, including the disease type, location of the lesions, disease behavior, and genetically attributable risks. Several genetic defects that disturb intestinal epithelial barrier function or affect immune function have been noted in these patients from the young age groups. In incidence of pediatric IBD in Korea has been increasing since the early 2000s. Neonatal or infantile-onset IBD develops in less than 1% of pediatric patients. Children with "neonatal IBD" or "infantile-onset IBD" have higher rates of affected first-degree relatives, severe disease course, and a high rate of resistance to immunosuppressive treatment. The suspicion of a monogenic cause of VEO-IBD was first confirmed by the discovery of mutations in the genes encoding the interleukin 10 (IL-10) receptors that cause impaired IL-10 signaling. Patients with such mutations typically presented with perianal fistulae, shows a poor response to medical management, and require early surgical interventions in the first year of life. To date, 60 monogenic defects have been identified in children with IBD-like phenotypes. The majority of monogenic defects presents before 6 years of age, and many present before 1 year of age. Next generation sequencing could become an important diagnostic tool in children with suspected genetic defects especially in children with VEO-IBD with severe disease phenotypes. VEO-IBD is a phenotypically and genetically distinct disease entity from adult-onset or older pediatric IBD.

Urease Characteristics and Phylogenetic Status of Bacillus paralicheniformis

  • Jeong, Do-Won;Lee, Byunghoon;Lee, Hyundong;Jeong, Keuncheol;Jang, Mihyun;Lee, Jong-Hoon
    • Journal of Microbiology and Biotechnology
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    • v.28 no.12
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    • pp.1992-1998
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    • 2018
  • In 2015, Bacillus paralicheniformis was separated from B. licheniformis on the basis of phylogenomic and phylogenetic studies, and urease activity was reported as a phenotypic property that differentiates between the two species. Subsequently, we have found that the urease activity of B. paralicheniformis is strain-specific, and does not reliably discriminate between species, as strains having the same urease gene cluster were identified in B. licheniformis and B. sonorensis, the closest relatives of B. paralicheniformis. We developed a multilocus sequence typing scheme using eight housekeeping genes, adk, ccpA, glpF, gmk, ilvD, pur, spo0A, and tpi to clearly identify B. paralicheniformis from closely related Bacillus species and to find a molecular marker for the rapid identification of B. paralicheniformis. The scheme differentiated 33 B. paralicheniformis strains from 90 strains formerly identified as B. licheniformis. Among the eight housekeeping genes, spo0A possesses appropriate polymorphic sites for the design of a B. paralichenofomis-specific PCR primer set. The primer set designed in this study perfectly separated B. paralicheniformis from B. licheniformis and B. sonorensis.

A New Record of Prionospio depauperata (Annelida: Polychaeta: Spionidae) with DNA Barcoding Data of Four Prionospio Species in South Korea

  • Lee, Geon Hyeok;Yoon, Seong Myeong;Min, Gi-Sik
    • Animal Systematics, Evolution and Diversity
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    • v.36 no.4
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    • pp.382-386
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    • 2020
  • In this study, Prionospio depauperata Imajima, 1990 is newly reported in Korean fauna. Prionospio depauperata can be distinguished from other relatives by the four pairs of branchiae which are pinnate on chaetigers 2 and 5, and apinnate on chaetigers 3 and 4; caruncle extending to the end of chaetiger 2; and moderate dorsal crest present on chaetigers 7-13. The morphological diagnosis of P. depauperata are provided with the photographs of four Prionospio species. The mitochondrial cytochrome c oxidase subunit 1 (CO1), 16S ribosomal DNA (16S rDNA), and the nuclear 18S ribosomal DNA (18S rDNA) sequences of four Prionospio species from Korean waters, P. depauperata Imajima, 1990, P. japonica Okuda, 1935, P. krusadensis Fauvel, 1929, and P. membranacea Imajima, 1990, were determined for the first time. The inter-specific genetic distances among the congeners of four Prionospio species were 22.3-29.6% in CO1, 10.5-25.0% in 16S rDNA, and 0.3-3.6% in 18S rDNA.

Molecular and Morphological Characteristics of a New Species Collected from an Insect (Cicindela transbaicalica) in Korea

  • Lee, Ju-Heon;Ten, Leonid N.;Lim, Seong-Keun;Ryu, Jung-Joo;Avalos-Ruiz, Diane;Lee, Seung-Yeol;Jung, Hee-Young
    • Mycobiology
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    • v.50 no.3
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    • pp.181-187
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    • 2022
  • To exploit insect-derived fungi, insects were collected from seven different regions in Korea, including Gyeongbuk, Goryeong, and several fungi were isolated from them. A fungal strain designated 21-64-D was isolated from riparian tiger beetle (Cicindela transbaicalica) and morphologically identified as a species belonging to the genus Oidiodendron. Phylogenetic analysis using the nucleotide sequences of internal transcribed spacer (ITS) regions and the partial sequence of the large subunit of the nuclear ribosomal RNA (LSU) gene revealed the distinct phylogenetic position of the isolate among recognized Oidiodendron species including its closest neighbors O. chlamydosporicum, O. citrinum, O. maius, and O. pilicola. The hyphal and conidial morphology of the strain, particularly club-shaped hyphae, clearly differentiated it from its close relatives. Results indicated that 21-64-D is a novel species in the genus Oidiodendron, for which the name Oidiodendron clavatum sp. nov. is proposed.

Visitors' Satisfaction level and Intention to Revisit for Chungcheongnam-do Deoksan Provincial Park (충남 덕산도립공원 탐방객 만족도와 재방문 의사)

  • Lee, Saem;Baek, DongYeol;Koo, Bonhak
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.26 no.1
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    • pp.35-46
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    • 2023
  • The purpose of this research is to provide characteristics and satisfaction of visitors for Deoksan Provincial Park in Chungcheongnam-do. This study conducted face-to-face interview during Oct. to Nov. in 2022. Total sample size of this study was 521. This study used to implement frequency analysis, cross analysis and logit analysis via SPSS 21.0 version. The results showed most of visitors were one day visitors and visited with family and relatives. Many visitors visited the Deoksan Provincial Park to climb the mountain and relaxing/healing with the nature. The satisfaction level of factors such as nature, facility, access to information of the park was high with about more than 4-point on Likert scale. This study would be useful to develop site-specific policies to the management of provincial parks as this study identified the characteristics and satisfaction level of the visitors.

The Clothes, Food and Shelter Life Style of Burmese People (미얀마 버마족의 의식주 생활양식)

  • CHOI, Jae Hyun
    • SUVANNABHUMI
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    • v.1 no.1
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    • pp.51-74
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    • 2009
  • It has often been said that Myanmar is the most profound Buddhist country in the world. That may well be true, but the brand of Buddhism practised in this isolated land is unique on the face of the globe. Myanmar Buddhism is theoretically Theravada Buddhism, a sect of Buddhism adhering most closely to the Buddha's teachings, and is the dominant form of Buddhism throughout Southeast Asia. The customary law also has an indissoluble connection with Buddhism in the Burmese society. The family customs and law have been put in statutory form with Damathat. And Damathat which is a statute law plays a important role as a mirror of the popular society. In Burmese society, the network which connects an individual and an individual fulfills its more function than the relatives and families act with group. The human relation which is generally completed within home, for example, parents and children, brothers and sisters, husband and wife and so on is situated as a center of the network which spreads outside home also in Burmese society. And Burmese society is 'khin' and 'ana' society. Burmese people positively extend the human relation through the way of thinking of Myanmar language 'khin' translated 'intimate', but they also put on the brakes the extending human relation without ending by keeping its distance through the way of thinking of Myanmar language 'ana' translated 'refuse courteously.'

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Gastrointestinal endoscopy's carbon footprint

  • Su Bee Park;Jae Myung Cha
    • Clinical Endoscopy
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    • v.56 no.3
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    • pp.263-267
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    • 2023
  • Climate change is a global emergency. Consequently, current global targets to combat the climate crisis include reaching net-zero carbon emissions by 2050 and keeping global temperature increases below 1.5 ℃. In 2014, the healthcare carbon footprint was 5.5% of the total national footprint. Gastrointestinal endoscopy (GIE) has a large carbon footprint compared to other procedures performed in healthcare facilities. GIE was identified as the third largest generator of medical waste in healthcare facilities for the following reasons: (1) GIE is associated with high case volumes, (2) GIE patients and relatives travel frequently, (3) GIE involves the use of many nonrenewable wastes, (4) single-use devices are used during GIE, and (5) GIE is frequently reprocessed. Immediate actions to reduce the environmental impact of GIE include: (1) adhering to guidelines, (2) implementing audit strategies to determine the appropriateness of GIE, (3) avoiding unnecessary procedures, (4) using medication rationally, (4) digitalization, (5) telemedicine, (6) critical pathways, (7) outpatient procedures, (8) adequate waste management, and (9) minimizing single-use devices. In addition, sustainable infrastructure for endoscopy units, using renewable energy, and 3R (reduce, reuse, and recycle) programs are necessary to reduce the impact of GIE on the climate crisis. Consequently, healthcare providers need to work together to achieve a more sustainable future. Therefore, strategies must be implemented to achieve net-zero carbon emissions in the healthcare field, especially from GIE, by 2050.

The Effect of Nurse Image, Satisfaction with One's Major and Career Decision-making Self-efficacy on Career Preparation Behavior of First-year Nursing Students (간호학과 신입생의 간호사 이미지, 전공만족도, 진로결정 자기효능감이 진로준비행동에 미치는 영향)

  • Kim, Seong Kyong
    • Journal of muscle and joint health
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    • v.31 no.2
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    • pp.117-125
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    • 2024
  • Purpose: This study was intended to evaluate the effect of nurse image, satisfaction with one's major and career decision-making self-efficacy on career preparation behavior of first-year nursing students. Methods: A total of 134 first-year nursing students were enrolled in this study. Data were collected from March 25 to April 5, 2024. Data collected prospectively were analyzed by t-test, ANOVA, Pearson's correlation coefficients, and multiple regression analysis. Results: Career preparation behavior showed a significantly positive correlation with nurse image (r=.28, p=.001), satisfaction with one's major (r=.41, p<.001) and career decision-making self-efficacy(r=.61, p<.001). Career decisionmaking self-efficacy showed a significantly positive correlation with nurse image (r=.59, p<.001), satisfaction with one's major (r=.70, p<.001). Satisfaction with one's major showed a significantly positive correlation with nurse image (r=.66, p<.001). Career preparation behavior was significantly affected by nurse in the family and relatives (β=-.21, p=.003) and career decision-making self-efficacy (β=.64, p<.001), which had an explanatory power of 41.0%. Conclusion: To establish career preparation behavior in first-year nursing students, it is necessary to develop a variety of systematic educational programs to enhance career decision-making self-efficacy.