• Proceedings of the Zoological Society Korea Conference
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• 2003.08a
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• pp.48-48
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• 2003

No Abstract, See Full Text

• Journal of Korean Society of Forest Science
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• v.110 no.2
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• pp.179-188
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• 2021

Biodiversity informatics applies information technology methods in organizing, accessing, visualizing, and analyzing primary biodiversity data and quantitative data management through the scientific names of accepted names and synonyms. We reviewed the GBIF data published by China, Japan, Taiwan, and internal institutes, such as NIBR, NIE, and KNA of the Republic of Korea, and assessed data in diverse aspects of data quality using BRAHMS software. Most data from four Asian countries have quality problems with the lack of data consistency and missing information on georeferenced data, collectors, collection date, and place names (gazetteers) or other invalid data forms. The major problem is that biodiversity management institutions in East Asia are using unstructured databases and simple spreadsheet-type data. Owing to the nature of the biodiversity information, if data relationships are not structured, it would be impossible to secure the data integrity of scientific names, human names, geographical names, literature, and ecological information. For data quality, it is essential to build data integrity for database management and training systems for taxonomists who are continuous data managers to correct errors. Thus, publishers in East Asia play an essential role not only in using specialized software to manage biodiversity data but also in developing structured databases and ensuring their integration and value within biodiversity publishing platforms.

• Journal of Korean Society of Environmental Engineers
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• v.33 no.9
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• pp.692-700
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• 2011

The use of electric field has been studied as an alternative for biofilm control dominated by disinfectants and antibiotics. This technology would be advantageous in the environmental respect that biofilm can be controlled based on electron transfer, not using chemical disinfectants and antibiotics. Control mechanisms which were reported by earlier studies are organized as; (1) bacterial adhesion control by electrostatic repulsion at a negative current, (2) bacterial adhesion control using bacterial motion and (3) bacterial inactivation by direct oxidation at a positive current, (4) bioelectric effect leading to biofilm inactivation. In this review article, we summarized the technologies for biofilm control using electric field and provided some application examples from previous studies.

• Journal of Soil and Groundwater Environment
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• v.11 no.4
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• pp.25-32
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• 2006

In this study, a novel bioreactor system using a diffuser type hollow fiber membranes (hollow fiber membrane diffuser, HFMD) was applied to investigate the feasibility and biodegradation capacity for the treatment of a gaseous mixture consisting of benzene, toluene and p-xylene(BTX). First, A mixed culture pre-acclimated to toluene effectively biodegraded the BTX mixture at an overall removal efficiency of approximately 70% for a 20-day operational period. It was found that the biodegradation of toluene was slightly inhibited because of the presence of benzene and p-xylene. Second, the elimination capacity (EC) of total BTX increased up to 360 $g/m^3/hr$, which was substantially higher than maximum ECs for BTEX reported in the biofiltration literature. Consequently, the hollow fiber membrane diffuser was considered as an alternative method over other conventional VOC-treating technologies such as biofilters.

• Journal of The Korean Association For Science Education
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• v.30 no.5
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• pp.636-646
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• 2010

The purpose of this study is to confirm secondary biology teachers' recognition about cell and gene concepts that should be taught in biology according to each school level and to classify the concepts into essential, optional and non-essential ones. We developed a questionnaire in consultation with 5 biology professors after selecting some biological concepts from some data about the recommendations of BSCS, biology, study for the connection with biological contents in each school level. This survey was conducted to biological teachers in secondary schools (146 individuals) from all over Korea for studying the concepts of the cell and gene in elementary and secondary schools. The results of this study revealed the following: The number of essential concepts in the cell and gene domain increases as the school levels go up. Moreover, secondary biology teacher recognized that there must be much more cell and gene concepts that should be taught in elementary and secondary schools compared to those suggested in the science curriculum and BSCS' recommendation.

• Korean Journal of Environmental Biology
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• v.22 no.1
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• pp.12-27
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• 2004

Studies on the Korean cave fauna were reviewed during the last seven decades since the first record of Antrokorean gracilipes Verhoeff, 1938. The cave animals have been reported by only 112 papers, 16 repoyts and ten books. In the results, a total of 257 species is recorded representing four phyla, ten classes, 31 orders, and 94 families, and also the holotype localities of 87 species are recorded from 36 caves and four wells in Boron. Arthropods are predominant consisting of 241 species (93.8％), and true spiders (Araneae) are a most diverse group with 97 species (37.7％) including 21 Korean endemic species belonging to 29 families.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.4
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• pp.845-850
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• 2018

In this paper, we propose a method to estimate the number of biofouling attached to the surface of marine structures. This method estimates the number of biofouling by calculating the region maxima using images taken in underwater. To do this, we analyze the correlation between the region maxima and the number of biofouling. The analysis showed that there is a significant correlation between the number of region maxima and the number of biofouling. By using the results of this analysis, the experiments were conducted on images taken in the underwater. Experimental results show that the higher the region maxima of the image, is greater than the number of biofouling in the image. The proposed method can be used as an important technology in computer vision for underwater images.

• Korean Journal of Environmental Biology
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• v.24 no.1 s.61
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• pp.19-28
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• 2006

A survey was carried out two times at 11 localities on the marine molluscan fauna of Saemangeum during the periods from August 3rd to August 5th, and from August 23rd to August 25th 2003. The total number of molluscan species identified in this study was 88 species in 40 families, and among them 51 species in 34 families include Eurytrochus cognatus were new to the fauna of Saemangeum. In addition to the previously described 58 species in 31 families, a total of 109 species in 48 families of marine mollusca have been reported at Saemangeum up to date.

• KSBB Journal
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• v.8 no.4
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• pp.351-357
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• 1993

Three immobilization techniques and free cell system were tested to determine the most effective technique for the treatment of pulp waste effluent. The tests were conducted using Phanerochaete chrysosporium as a biocatalyst in a process designed to treat pulp waste effluent. The results show that Ca-alginate gel was the best immobilization material. The chosen material improved the stability and increased the removal efficiency of the system. The experiment using the chosen material was mom- bored for 400 hours with no significant changes in the state of the fungus. Common problems with other immobilization materials and free cell system were oxygen transfer resistance caused by air channelling and clogging in the bioreactor.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.134-135
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• 2013

In this study, the physical properties and antifouling were investigated to make the Marine growth antifouling coatings by blending of synthesized silicone resin and pigment with a low surface tension. To examine the film properties and foul release of the prepared coatings, film specimens were prepared with the prepared coatings and anti corrosion coatings. The test results showed that the silicone type antifouling coatings had very excellent antifouling properties rather than any other coatings because of the coating films had followed the low surface tension and elasticity, and prevention of adhesion for marine growth and mechanical adhesions.