• Bulletin of the Korean Chemical Society
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• 제20권1호
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• pp.7-15
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• 1999

The present paper is a review of the current studies of quantum beats in recombination of spin-correlated radical pairs in solutions as well as of future applications of quantum beats technique for studying these pairs. Examples are given of the use of this method for determining the hfi constants and relaxation times of short-lived radical ions, for finding the rate constants of the reactions of alkane radical cations and for estimating a fraction of singlet-correlated pairs in the pairs in the tracks of ionizing particles. The potentialities of this method, its advantages and limitations are discussed.

• Korean Journal of Mathematics
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• 제21권3호
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• pp.351-363
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• 2013

We study the properties of weak extended order algebras having adjoint pairs (triples) or Galois pairs. In particular, we investigate the various laws on weak extended order algebras.

• Journal of Acupuncture Research
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• 제19권4호
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• pp.42-48
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• 2002

Background : There are many books on ancient medicine among the Dunhuang books found at a cave in Dunhuang, most of which were transcribed during Tang dynasty, reflecting ancient theories and practices. Objective and Material : To investigate the usage of the terms of three pairs of yin and yang as acupoint names, 4 books on acupuncture and moxibustion among Dunhuang books were examined. Results and Conclusion : Investigation of the usage of the terms of three pairs of yin and yang in the scripts and illustrations of 4 Dunhuang books which are also the names of 12 main meridians revealed that the terms of three pairs of yin and yang were used as the names of specific acupoints so called three pairs of yin and yang acupoints. The significance of the terms of three pairs of yin and yang as the names of specific acupoints are discussed focusing on the early form and development of meridian theory.

• Animal cells and systems
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• 제10권2호
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• pp.85-91
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• 2006

The lynx spiders are free wandering spiders with long spines on their legs. They do not build web, but hunt small insects on plants. In spite of the facts that the wandering spiders do not produce webs for prey-catching, they also have silk apparatuses even though the functions are not fully defined. This paper describes the microstructural organization of the silk-spinning nozzles and its silk glands of the lynx spider, Oxyopes licenti, revealed by the field emission scanning electron microscope (FESEM). The silkspinning nozzles of this spider were identified as three groups: ampullate, pyriform and aciniform glands. Each group of silk gland feed silk into one of the three pairs of spinnerets. Two pairs of major ampullate glands send secretory ductules to the anterior spinnerets, and another two pair of minor ampullate glands supply the middle spinnerets. In addition, the pyriform glands feed silk into the anterior spinnerets (25-30 pairs in females and 24-40 pairs in males), and the aciniform glands send ductules to the middle (9-12 pairs in females and 7-11 pairs in males) and the posterior spinnerets (16-20 pairs in females and 16-17 pairs in males). Among these, the ampullate one is the most predominate gland in both sexes. However the flagelliform and the aggregate glands which had the functions of cocoon production or adhesive thread production in other webbuilding spiders were not observed at both sexes of this spider.

• 한국공간정보시스템학회 논문지
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• 제9권3호
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• pp.67-80
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• 2007

최근 LBS(location-based service) 및 텔레매틱스(telematics) 응용의 효율적인 지원을 위해, 기존 유클리디언(Euclidean) 공간 대신, 실제 도로나 철도와 같은 공간 네트워크(network)를 고려한 다수의 연구가 수행되었다. 그러나 Closest Pairs 질의 및 e-distance 조인 질의는, 하나의 POI(Point Of Interest)를 다루는 대신 POI 집합에 대하여 질의처리를 수행하기 때문에 매우 비용이 많이 든다. 아울러, k 값 및 범위의 증가에 따라 질의처리에 필요한 노드 검색 및 거리 계산의 비용이 매우 크게 증가한다. 따라서 본 논문에서는 공간 네트워크를 위한 효율적인 Closest Pairs 질의 및 e-distance 조인 질의 처리를 위해, POI 기반의 실체화 기법을 이용한 효율적인 질의처리 알고리즘을 제안한다. 아울러 기존 질의처리 알고리즘과의 성능 비교를 통하여 제안하는 알고리즘이 검색 성능이 우수함을 보인다.

• Communications for Statistical Applications and Methods
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• 제21권4호
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• pp.275-284
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• 2014

Matched pairs are twice continuously measured data with the same categories. They can be represented as the square contingency tables. We can also consider symmetry and marginal homogeneity. Moreover, we can infer the matched pairs models; the symmetry model, the quasi-symmetry model, and the ordinal quasi-symmetry model. These inferences are involved in assumptions for special distributions. In this study, we visualize matched pairs models using modified correspondence analysis. Modified correspondence analysis can be used when square contingency tables are given; consequently, it is involved in the square and asymmetric correspondence matrix. This technique does not need assumptions for special distributions and is more helpful than the correspondence analysis to visualize matched pairs models.

• Parasites, Hosts and Diseases
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• 제37권1호
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• pp.5-11
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• 1999

Three species of the families Viviparidae and Pleuroceridae, the first intermediate host of paragonimiasis, metagonimiasis and echinostomiasis were studied cytologically. The observed diploid chromosome number was as follows: Semisulcospira libertina 36, S. dolichostoma 34, and Viviparus rivularis 64. The mitotic chromosome complement of S. libertina has nine metacentric pairs and nine submetacentric pairs, and S. dolichostoma has three metacentric pairs and 14 submetacentric pairs of chromosomes. Viviparus rivularis showed two metacentric pairs and 30 submetacentric pairs of chromosomes.

• Journal of Plant Biology
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• 제21권1_4호
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• pp.29-32
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• 1978

The karyotype of Lilium cernum has been analysed by means of C-banding technique. Most of clones observed were 2n=24 chromosomes which consist of two pairs of submetacentric and ten pairs of subtelocentric chromosomes, among which two pairs of chromosomes(B and E) showed secondary constriction in the short arm. In addition to these chromosomes a small supernumerary telocentric chromosome was seen in the eight clones. Sixtyeight bands were observed in the twentytwo chromosomes of complement and one band in the supernumerary chromosome. A pair of chromosome (L) did not show any band. The bnads on the chromosome. A pair of chromosome (L) did not show any band. The bands on the chromosomes were distributed in the centromere, secondary constriction and intercalary regions of arms. Of the twelve pairs of chromosomes ten pairs showed symmetric banding patterns in each, but two pairs (I and K) showed asymmetric banding patterns.

• 한국생물정보학회:학술대회논문집
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• 한국생물정보시스템생물학회 2003년도 제2차 연례학술대회 발표논문집
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• pp.7-16
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• 2003

In this paper, we propose a probabilistic framework to predict the interaction probability of proteins. The notion of domain combination and domain combination pair is newly introduced and the prediction model in the framework takes domain combination pair as a basic unit of protein interactions to overcome the limitations of the conventional domain pair based prediction systems. The framework largely consists of prediction preparation and service stages. In the prediction preparation stage, two appearance pro-bability matrices, which hold information on appearance frequencies of domain combination pairs in the interacting and non-interacting sets of protein pairs, are constructed. Based on the appearance probability matrix, a probability equation is devised. The equation maps a protein pair to a real number in the range of 0 to 1. Two distributions of interacting and non-interacting set of protein pairs are obtained using the equation. In the prediction service stage, the interaction probability of a protein pair is predicted using the distributions and the equation. The validity of the prediction model is evaluated fur the interacting set of protein pairs in Yeast organism and artificially generated non-interacting set of protein pairs. When 80% of the set of interacting protein pairs in DIP database are used as foaming set of interacting protein pairs, very high sensitivity(86%) and specificity(56%) are achieved within our framework.

• Animal cells and systems
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• 제5권3호
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• pp.211-216
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• 2001

Polyclonal antiserum against Manduca sexta allatotropin has been utilized to investigate the localization of allatotropin-immunoreactivity in the brain of the si1k moth Bombyx mori. Manduca sexta allatotropin-immunoreactive (Mas-AT-IR) neurons were found in all larval brains investigated, but not in prepupal, pupal and adult brains. In the larval stages, first appearance of Mas-AT-immunoreactivity w8s shown in the brain of first instar larvae, which contains four pairs of bilateral Mas-AT-IR cell bodies. Labeled neurons increased to six pairs in the second instar larval brain, including two pairs of median neurosecretory cells in the pars intercerebralis. In the third and fourth instar larvae, five pairs of labeled cell bodies were distributed throughout each brain. In the fifth instar, there were about ten pairs of bilateral cell bodies in the day-1 brain, about seven pairs in the day-3 brains, and five pairs in the day-5 brains, respectively. Mas-AT-labeling was observed in both axons within nervi corpora cavdiaci (NCC) 1+11 and corpora allata. This suggests that the Mas-AT produced from the brain neurons is transported via some axons of the NCC 1+11 and nervi corpora allati I to the corpora allata, which appears to be a main accumulation site for the Mas-AT neuropeptide in some brain neurons produced in B. mori.