• Title/Summary/Keyword: prerequisite-program

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Potential of Using Oribatid mites(Acari: Oribatida) as Biological Indicators of Forest Soil Acidification (산림토양 산성화의 생물지표로써 날개응애(Acari: Oribatida) 이용 가능성)

  • Chuleui Jung;Joon-Ho Lee;Seong-Sik Choi
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.4 no.4
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    • pp.213-218
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    • 2002
  • The use of biological indicator for environmental monitoring has suddenly become popular in many international organizations as well as domestic ones. Since the biological indicator species should be well responsive to native environmental change, development of native indicator species is prerequisite for environmental assessment and restoration program. Through regression analysis of mean density and pH, potential indicator species were screened from Namsan and Kwangreung where differential environmental stresses are influenced; Lasiobelba remota, Ceratozetes sp. Tectocepheus velatus, Neogymnobates sp. and Oppia sp.3. Also keystone species in two study area were Lohmannia coreana, Ceratozetes sp., Rostrozetes pulcherrimus, and Lasiobelba remota in Namsan Deciduous forest and Neogymnobates sp., Neogymnobates donghaksaensis, and Cultroribula tridentata in Kwangreung. Advantages and disadvantages of using biological indicator for environmental monitoring were further discussed.

A Study on the Curriculum Development for the Professional Hospice Nurse in Korea (한국 호스피스 전문간호사 교육과정 개발을 위한 기초조사)

  • 최의순;노유자;한성숙;김남초;김희승;박호란;안성희
    • Journal of Korean Academy of Nursing
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    • v.28 no.4
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    • pp.1027-1035
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    • 1998
  • The purpose of this study is to develop the first domestic professional hospice educational program. We investigated the present condition of Korean hospice education and analyzed the prerequisite need for a dedicated hospice course in the professional education process. Research was conducted between June and November 1996 for nursing professors teaching at each nursing education institute to find out how much hospice is being discussed and by whom, in which course it is being discussed, and also to find out the contents that needed to be included in the professional education process. From a total of 49 colleges(29 three year colleges, 20 four year colleges) out of 99, 162 nursing professors replied, the collection rate was 49.5%. The conclusions are as follows ; 1. The present condition of the hospice nursing education. 1) Whether hospice is included in the education program. \circled1 89.65% of 3 year colleges and 90% of 4 year colleges included hospice education in their education program. \circled2 In graduate studies three schools included hospice in their program and three schools expressed their plans to include hospice education 2) Hospice related education were commonly discussed in adult nursing(26.3%), fundamental nursing(22.8%), and psychiatric nursing(20.2%). In 3 year colleges its commonly discussed in the first and second year and in 4 year colleges it is taught in the second and third year. 3) Hospice related theory/practical education hours were averages of 6.5/7.0 hrs in 3 year colleges and 14.2/11.3 hrs in 4 year colleges. 4) The majority of professors in charge of hospice education were in the following order adult nursing, psychiatric nursing, and fundamental nursing. 5) The courses that are thought to be adequate to manage hospice related education were adult nursing(29.3%), community health nursing(21.7%) and the desired method of education was the method currently being used (36.5%). 2. The demand for hospice nursing education. 1) Over 70% demanded professional hospice education program, the highest demand was for the value and meaning of life followed by the role and qualification of the hospice team and the mental maintenance of a dying patient. 25 categories showed over 90% demand. 2) The highest demand was for the value and meaning of life (98.2%) and the lowest demand were for danjeon breathing(71.0%)and acupuncture(71.0%). 3) Other contents that need to be discussed in the professional hospice education program were hospice nursing, the attitude and reaction of death, bereavement care, and the prospects of hospice.

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Mountain-cultivated ginseng protects against cognitive impairments in aged GPx-1 knockout mice via activation of Nrf2/ChAT/ERK signaling pathway

  • Bao Trong Nguyen;Eun-Joo Shin;Ji Hoon Jeong;Naveen Sharma;Ngoc Kim Cuong Tran;Yen Nhi Doan Nguyen;Dae-Joong Kim;Myung Bok Wie;Yi Lee;Jae Kyung Byun;Sung Kwon Ko;Seung-Yeol Nah;Hyoung-Chun Kim
    • Journal of Ginseng Research
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    • v.47 no.4
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    • pp.561-571
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    • 2023
  • Background: Escalating evidence shows that ginseng possesses an antiaging potential with cognitive enhancing activity. As mountain cultivated ginseng (MCG) is cultivated without agricultural chemicals, MCG has emerged as a popular herb medicine. However, little is known about the MCG-mediated pharmacological mechanism on brain aging. Methods: As we demonstrated that glutathione peroxidase (GPx) is important for enhancing memory function in the animal model of aging, we investigated the role of MCG as a GPx inducer using GPx-1 (a major type of GPx) knockout (KO) mice. We assessed whether MCG modulates redox and cholinergic parameters, and memory function in aged GPx-1 knockout KOmice. Results: Redox burden of aged GPx-1 KO mice was more evident than that of aged wild-type (WT) mice. Alteration of Nrf2 DNA binding activity appeared to be more evident than that of NFκB DNA binding activity in aged GPx-1 KO mice. Alteration in choline acetyltransferase (ChAT) activity was more evident than that in acetylcholine esterase activity. MCG significantly attenuated reductions in Nrf2 system and ChAT level. MCG significantly enhanced the co-localization of Nrf2-immunoreactivity and ChAT-immunoreactivity in the same cell population. Nrf2 inhibitor brusatol significantly counteracted MCG-mediated up-regulation in ChAT level and ChAT inhibition (by k252a) significantly reduced ERK phosphorylation by MCG, suggesting that MCG might require signal cascade of Nrf2/ChAT/ERK to enhance cognition. Conclusion: GPx-1 depletion might be a prerequisite for cognitive impairment in aged animals. MCG-mediated cognition enhancement might be associated with the activations of Nrf2, ChAT, and ERK signaling cascade.

A Study for Optimal Dose Planning in Stereotactic Radiosurgery

  • Suh, Tae-suk
    • Progress in Medical Physics
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    • v.1 no.1
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    • pp.23-29
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    • 1990
  • In order to explane the stereotactic procedure, the three steps of the procedure (target localization, dose planning, and radiation treatment) must be examined separately. The ultimate accuracy of the full procedure is dependent on each of these steps and on the consistancy of the approach The concern in this article was about dose planning, which is a important factor to the success of radiation treatment. The major factor in dose planning is a dosimetry system to evaluate the dose delivered to the target and normal tissues in the patient, while it generates an optimal dose distribution that will satisfy a set of clinical criteria for the patient. A three-dimensional treatment planning program is a prerequisite for treatment plan optimization. It must cover 3-D methods for representing the patient, the dose distributions, and beam settings. The major problems and possible modelings about 3-D factors and optimization technique were discussed to simplify and solve the problems associatied with 3-D optimization, with relative ease and efficiency. These modification can simplify the optimization problem while saving time, and can be used to develop reference dose planning system to prepare standard guideline for the selection of optimum beam parameters, such as the target position, collimator size, arc spacing, the variation in arc length and weight. The method yields good results which can then be simulated and tailored to the individual case. The procedure needed for dose planning in stereotactic radiosurgery is shown in figure 1.

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Backbone 1H, 15N, and 13C Resonance Assignments and Secondary-Structure of the Conserved Hypothetical Protein HP0892 of Helicobacter pylori

  • Han, Kyung-Doo;Park, Sung-Jean;Jang, Sun-Bok;Lee, Bong-Jin
    • Molecules and Cells
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    • v.25 no.1
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    • pp.138-141
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    • 2008
  • HP0892 (SwissProt/TrEMBL ID O25552) is a 90-residue conserved hypothetical protein from Helicobacter pylori strain 26695, with a calculated pI of 9.38 and a molecular mass of 10.41 kDa. It belongs to the Plasmid stabilization system protein family (PF05016) in the Pfam database. Proteins with sequence similarity to HP0892 exist in Vibrio choierae, Enterococcus faecalis, Campylobacter jejuni, Streptococcus pneumoniae, Haemophilus influenzae, Escherichia coli O157. Here we report the sequence-specific backbone resonance assignments of HP0892 using multidimentional heteronuclear NMR spectroscopy. About 97.0% (422/435) of the HN, N, CO, $C{\beta}$, $C{\alpha}$ resonances of 90 residues of HP0892 were assigned. On the basis of the resonance assignments, three helical regions and four strand regions were identified using the CSI program. This study is a prerequisite for calculating the solution structure of HP0892, and will be useful for studying its interaction with other molecules.

A Simple PCR-RFLP for Idenficiation of Bursaphelenchus spp. Collected from Korea

  • Han, Hye-Rim;Han, Bo-Young;Chung, Yeong-Jin;Shin, Sang-Chul
    • The Plant Pathology Journal
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    • v.24 no.2
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    • pp.159-163
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    • 2008
  • Accurate identification of pine wood nematode, Bursaphelenchus xylophilus is a prerequisite to diagnose the pine wilt disease. However, a fungivorous nematode, B. mucronatus is highly similar to B. xylophilus and it is difficult to differentiate these two species by morphological features. A molecular diagnosis method, ITSRFLP was applied for the identification of B. xylophilus and B. mucronatus from Korea. Genomic DNA was extracted from a single individual nematode and ITS DNA was amplified by PCR. The size of PCR product was approximately 900bp and the sequence data were obtained after cloning. Amplified ITS was digested by 5 different restriction enzymes (Rsa I, Hae III, Msp I, Hinf I, and Alu I) and provided a discriminatory profile for B. xylophilus and B. mucronatus. Besides, B. mucro- natus was determined to have 2 different genotypes, East Asian type and European type also clearly separated by Rsa I and Hae III digestion. European type of B. mucronatus is recently collected from Pinus koraiensis and has not been reported before. ITS sequnce data were analyzed by Restriction Mapper program and the result supported ITS-RFLP pattern. These data indicated that PCRRFLP method is an accurate and simple way for identification of Bursaphelenchus species.

A Study on Improving the Relationship Marketing Activities of Tourist Hotels (관광호텔의 대 고객 관계 마케팅 활동 개선방안에 관한 연구)

  • 송용덕
    • Journal of Applied Tourism Food and Beverage Management and Research
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    • v.10
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    • pp.159-186
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    • 1999
  • This study attempted to present the ways of improving relationship marketing activities of tourist hotels. The field survey was carried out at six deluxe hotels in Seoul to find out their relationship marketing activities and analyze the problems of the activities. The problems were analyzed as follow; 1) lack of adequate understanding of the importance of relationship marketing, 2) poor contents of customer file information, 3) insufficient service encounter management, 4) negative inducement of guests' complaints, 5) insufficient survey of guests' satisfaction, 6) insufficient relationship maintenance programs and regaining program of lost guests. This study relationship marketing activities should be improved with customer information file establishment, service encounter mangement, and communication enforcement as follow; 1. Customer Information File Establishment As relationship marketing Is marketing for individual, it needs customer file information. The guest information files should be made in detail in all the market segments. Hotels have to make use of the information strategically for establishing relationship with their guests. 2. Service Encounter Mnagement Because the guest-oriented mind and professionalism of hotel staff are prerequisite for relationship continuity, hotel should make efforts to make its staff keep the mind and cultivate expert service technique of the staff. 3. Communication Enforcement Communication enforcement consists of communication activities and communication programs which are focused on contact intensity and two-way communication.

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Investigation on the Instructional Content based on Problem Based Learning by the Subject of the theories of Mathematics Education in College (문제 중심 학습(PBL)에 기반한 수업 지도 내용 탐색 -대학에서의 수학교육 관련 이론을 대상으로-)

  • Hwang, Hye Jeang
    • East Asian mathematical journal
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    • v.36 no.2
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    • pp.229-251
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    • 2020
  • Problem Based learning(PBL) is a teaching and learning method to increase mathematical ability and help achieving mathematical concepts and principles through problem solving using the learner's mathematical prerequisite knowledge. In addition, the recent instructional situations or environments have focused on the learner's self construction of his learning and its process. In spite of such a quite attention, it is not easy to apply and execute PBL program actually in class. Especially, there are some difficulties in actually applying and practicing PBL in the areas of mathematics education in not only secondary school but also in college. Its reason is that in order to conduct PBL instruction constantly in real or experimental class there is no more concrete and detailed instructional content during the consistent and long period. However, to whom is related to mathematics education including instructors called scaffolders, investigation and recognition on the degree of the learner's acquisition of mathematical thinking skills and strategies is an very important work. By the reason, in this study, the instructional content was to be explored and developed to be conducted during 15 weeks in one semester, which was based on Problem Based Learning environment by the subject of the theories relevant to mathematics education in the college of education.

Electrical and Magnetic Properties of BiFeO3 Multiferroic Ceramics

  • Roy, M.;Jangid, Sumit;Barbar, Shiv Kumar;Dave, Praniti
    • Journal of Magnetics
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    • v.14 no.2
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    • pp.62-65
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    • 2009
  • The multiferroic $BiFeO_3$ has been investigated extensively in both thin film and ceramic form. However, the synthesis of a perfect sample with high resistivity is a prerequisite for examining its properties. This paper reports the synthesis of multiferroic $BiFeO_3$ along with its structural, electrical and magnetic properties in ceramic form. Polycrystalline ceramic samples of $BiFeO_3$ were synthesized by solid-state reaction using high purity oxides and carbonates. The formation of a single-phase compound was confirmed by x-ray diffraction and its lattice parameters were determined using a standard computer program. The microstructural studies and density measurement confirmed that the prepared samples were sufficiently dense for an examination of its electrical and magnetic properties. The dc electrical conductivity studies show that the sample was resistive with an activation energy of ${\sim}0.81\;eV$. The magnetization measurement showed a linear ($M{\sim}H$) curve indicating antiferromagnetic characteristics.

Backbone 1H, 15N, and 13C Resonance Assignments and Secondary-Structure of Conserved Hypothetical Protein HP0894 from Helicobacter pylori

  • Han, Kyung-Doo;Park, Sung-Jean;Lee, Bong-Jin
    • Molecules and Cells
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    • v.20 no.3
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    • pp.442-445
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    • 2005
  • HP0894 (SwissProt/TrEMBL ID O25554) is an 88-residue conserved hypothetical protein from Helicobacter pylori strain 26695 with a calculated pI of 8.5 and a molecular weight of 10.38 kDa. Proteins with sequence similarity to HP0894 exist in Vibrio choierae, Enterococcus faecalis, Campylobacter jejuni, Streptococcus pneumoniae, Haemophilus influenzae, Escherichia coli O157, etc. Here we report the sequence-specific backbone resonance assignments of HP0894. About 97.5% (418/429) of the HN, N, CO, $C{\alpha}$, $C{\beta}$ resonances of the 88 residues of HP0894 were assigned. On the basis of these assignments, three helical regions and four strand regions were identified using the CSI program. This study is a prerequisite for calculating the solution structure of HP0894, and studying its interaction with its substrates, if any, and/or with other proteins.