• Title/Summary/Keyword: Life forms

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Mechanisms of Phosphate Solubilization by PSB (Phosphate-solubilizing Bacteria) in Soil (인산가용화 미생물에 의한 토양 내 인산이온 가용화 기작)

  • Lee, Kang-Kook;Mok, In-Kyu;Yoon, Min-Ho;Kim, Hye-Jin;Chung, Doug-Young
    • Korean Journal of Soil Science and Fertilizer
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    • v.45 no.2
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    • pp.169-176
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    • 2012
  • Among the major nutrients, phosphorus is by far the least mobile and available to plants in most soil conditions. A large portion of soluble inorganic phosphate applied to soil in the form of phosphate fertilizers is immobilized rapidly and becomes unavailable to plants. To improve the plant growth and yield and to minimize P loss from soils, the ability of a few soil microorganisms converting insoluble forms into soluble forms for phosphorus is an important trait in several plant growth-promoting microorganisms belonging to the genera Bacillus and Pseudomonas and the fungi belonging to the genera Penicillium and Aspergillus in managing soil phosphorus. The principal mechanism of solubilization of mineral phosphate by phosphate solubilizing bacteria (PSB) is the release of low molecular weight organic acids such as formic, acetic, propionic, lactic, glycolic, fumaric, and succinic acids and acidic phosphatases like phytase synthesized by soil microorganisms in soil. Hydroxyl and carboxyl groups from the organic acids can chelate the cations bound to phosphate, thereby converting it into soluble forms.

Latest Information Technologies in the UK Adults Education System

  • Tverezovska, Nina;Bilyk, Ruslana;Rozman, Iryna;Semerenko, Zhanna;Orlova, Nataliya;Vytrykhovska, Oksana;Oros, Ildiko
    • International Journal of Computer Science & Network Security
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    • v.22 no.8
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    • pp.25-34
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    • 2022
  • Today, further education of adults in the UK is one of the developing areas of continuing education. The Open University with distance learning, in the process of which innovative forms and methods based on computer and telecommunication technologies are used, is particularly successful in the organization of additional education of the adult population. The advantages of distance learning, multimedia - the latest information technologies, which provide the combination of graphic images, video, sound with the help of modern computer tools, are noted. The basic principles and forms underlying the technologies and forms of work with the elderly are defined. The international experience of implementing "Universities of the Third Age" is summarized. The most widespread approach in adult education in Great Britain is informational. The use of computer technologies motivates a new paradigm in educational methods and strategies, which requires new approaches, forms of learning, and innovative ways of delivering educational materials to adult learners. Information technologies have gained great popularity in such activities as distance learning, online learning, assistance in the education management system, development of programs and virtual textbooks in various subjects, online search for information for the educational process, computer testing of students' knowledge, creation of electronic libraries, formation of a single scientific electronic environment, publication of virtual magazines and newspapers on pedagogical topics, teleconferences, expansion of international cooperation in the field of Internet education. The information technology of synchronous distance learning "online" has gained considerable popularity in the educational process today. A promising direction is the use of multimedia technologies in educational activities to create a design of a virtual computer environment by decoding audiovisual information.

Distributional Characteristics by Habitat Type of Alien Plants - For Gyeongsang Area in Korea - (외래식물의 서식처 유형에 따른 분포특성 - 한국 경상권을 대상으로 -)

  • Lee, Jung-Min;Kim, Eui-Joo;Lee, Hyo-Hye-Mi;Cho, Kuy-Tae
    • Korean Journal of Ecology and Environment
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    • v.54 no.2
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    • pp.142-150
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    • 2021
  • To analyze the distribution characteristics of alien plants in various habitat types, 249 sites were selected from four administrative districts in the Gyeongsang region of Korea. The survey was conducted across nine different habitat types. A total of 115 species of alien plants were collected; comprising 23 families, 73 genera, 112 species, and 3 varieties. Species from the family Compositae were the most common at 33.0%. Raunkiaer's life forms had the highest occurrence rate with 70 species(60.9%) of therophytes(Th) followed by 30 species (26.1%) of hemicryptophytes (H) and 8 species (7.0%) of geophytes (G). The distributions of alien plant species per habitat type were: 81 species on the roadside; 80 species on vacant lots and artificial habitats; 67 species in streams; 53 species in grasslands; 47 species in cultivated lands; and 39 species on the coast. Since 2017, the number of alien plants has increased in Gyeongju-si, Cheongdo-gun, and Pohang-si, and decreased in Ulsan Metropolitan-si. In each region, 614 taxa were observed. The invasive alien species, Sicyos angulatus, Hypocaeris radicata, and Solanum carolinense, were observed for the first time and are expected to further increase the disturbance of the ecosystem.

Comparing a tablet computer and paper forms for assessing patient-reported outcomes in edentulous patients

  • Caetano, Thais Angelina;Ribeiro, Adriana Barbosa;Vecchia, Maria Paula Della;Cunha, Tatiana Ramirez;Chaves, Carolina de Andrade Lima;de Souza, Raphael Freitas
    • The Journal of Advanced Prosthodontics
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    • v.8 no.6
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    • pp.457-464
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    • 2016
  • PURPOSE. The aim of this study was to determine whether two methods of documentation, print and electronic forms, for the assessment of patient-reported outcomes (PRO) in complete denture wearers provide comparable results. The study also quantified the time needed for filling the forms by each method. MATERIALS AND METHODS. Thirty participants enrolled in a university clinic answered two forms (a questionnaire for denture satisfaction and OHIP-EDENT). They provided answers with two application methods in a random order, with a one-month interval between them: (1) electronic forms on a tablet computer; and (2) print forms. The methods were compared in terms of mean results, correlation/agreement, internal consistency, and spent time. RESULTS. Mean results for both methods were similar for each denture satisfaction item (100-mm VAS) and OHIP-EDENT summary score. Both questionnaires presented good internal consistency regardless of the application method (Cronbach's ${\alpha}=0.86$ or higher). Correlation and agreement between the methods regarding specific items was at least moderate for the majority of cases. Mean time for the electronic and print forms were 9.2 and 8.5 minutes, respectively (paired t test, P=.06, non-significant). CONCLUSION. The electronic method is comparable to print forms for the assessment of important PRO of prosthetic treatment for edentulism, considering the results and time needed. Findings suggest the viability of replacing print forms with a tablet for applying the tested inventories in clinical trials.

Flowering and fruiting phenology of herbs, climbers, shrubs, and trees in the deciduous dipterocarp forest of Northern Thailand

  • Janejaree Inuthai
    • Journal of Ecology and Environment
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    • v.47 no.3
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    • pp.134-145
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    • 2023
  • Background: The flowering and fruiting periods play an important role in biological processes. The deciduous dipterocarp forest is an important forest type in Thailand, however the phenological studies are still limited, particularly in different plant life forms. Thus, the present study focused on the flowering and fruiting phenology of herbs, climbers, shrubs, and trees in the deciduous dipterocarp forest at Lampang province of Northern Thailand. Field visits were made to record plant life forms and observe reproductive phenological events at monthly intervals from November 2018 to October 2019 and September to December 2020. Results: The phenological observations were based on 126 species of 45 families and 102 genera. Flowering and fruiting periods showed similar patterns in herbaceous plants, climbers, and shrubs. Most of these species produced flowers and fruits from the end of the rainy season (October) to the winter season (November-January). Whereas most of flowering and fruiting trees were found from the summer season (March-April) to the beginning of the rainy season (May-June). Most of the dry-fruited species occurred during the dry period (winter and summer seasons), while the majority of fleshy-fruited species dominated in the wet period (rainy season). The statistical analysis supported the phenological patterns of flowering and fruiting in the present study. There were significant negative correlations between the number of flowering and fruiting species and temperature. The number of flowering and fruiting species is significantly impacted by the interaction between seasons and plant life forms. Conclusions: Plant life form seems to be the important factor that affects the different phenological patterns in the studied plants. The abiotic and biotic factors play major roles in reproductive phenology. However, long-term study and in-depth phenological observations are necessary for better understanding.

A Study on the Costume Design through Perception of the Natural Beauty -Concentrating on the Orchid Motif- (자연미의 인식을 통한 의상디자인 연구 -난(蘭) 모티브를 중심으로-)

  • 박현주
    • Journal of the Korea Fashion and Costume Design Association
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    • v.4 no.1
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    • pp.173-183
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    • 2002
  • The orchid has a very elegant color and various forms in the nature or the ground for human life and the mother of life, The purpose of this study is to express some creative formative art by using the orchid as motive, and thereby, suggest the possibility of an artistic modern costume design by reviewing the texture of the materials. The results of this study can be summarized as follows; First, it was confirmed through this study that the orchid with diverse forms and colors can be used as design motive in almost infinitely diverse ways, and that all the artificial forms or structures contain the elements of natural beauty. Second, the luxurious and rich sense of orchid‘s color can be maximized by using the complementary contrast effect of the dyeing technique and the color gradation effect through harmony among similar colors. Third, a high value-added costume can be created to meet modern men’s aesthetic desire by using such embroidery techniques as crochet, weaving, dyeing, beads embroidery and art flower. Fourth, different effects of texture can be rendered by using different materials of various textures and characteristics. In addition, the possibility of creative expression for costume as formative art can be enhanced by expanding the expressions of the materials.

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Effect of Substituted Residue 24 on Folding of Tryptophan Synthase $\alpha$ Subunit (트립토판 중합효소 $\alpha$ 소단위체의 폴딩에 미치는 24번 잔기 치환효과)

  • 박후휘;김종원;신혜자;임운기
    • Journal of Life Science
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    • v.9 no.2
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    • pp.146-152
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    • 1999
  • In order to elucidate a role of residue 24 in the folding of tryptophan synthase $\alpha$ subunit, mutant proteins in which Thr 24 was replaced by Met, Ala, Ser, Leu or Lys were overexpressed in E. coli, and the extents of accumulated proteins as soluble or aggregated forms were examined. The mutant proteins with Met or Leu at residue 24 were predominantly accumulated as soluble forms as the native protein. On the other hand, mutant proteins with Ser, Ala or Lys at residue 24 were expressed as aggregated forms as well. This result suggests that residue 24 of tryptophan synthase $\alpha$ subunit may be implicated in the folding of this protein.

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A Study on Brand Preference of Female High School Students -Focusing on Lifestyle, Advertisement Expression Forms and Brand Image- (여고생들의 상표선호에 대한 연구;라이프스타일, 광고표현형식, 상표 이미지를 중심으로)

  • 차은정;박혜선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.24 no.4
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    • pp.487-497
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    • 2000
  • The purpose of this study was performed 1) to study the differences in advertisement expression and brand preference according to the lifestyle groups of high school girl students(Sports Uninterest Group, Friend Preference/Fashion Uninterest Group, Sports Preference/Horne Oriented Group. fashion Interest Group, and Confidence Group) and 2) to investigate the effects on the brand preference of adolescents of lifestyle, brand and advertisement image and advertisement expression forms. The subjects selected for the final analysis were high school girl students living in Pusan, Seoul and Taejeon, Korea. The statistics used for data analysis were factor analysis, one-way ANOVA, Duncan's multiple range test, stepwise multiple regression, frequency distribution and percentage by the SPSS program. The results of this study were as follows: 1. The preferences of advertising expression forms were significantly different among lifestyle groups: the Friend Preference/Fashion Uninterest Group preferred to sex appealing advertising expression form less than other groups. 2. The brand preferences were significantly different among lifestyle groups: the Confidence Group preferred brand less than other groups in general. 3. The brand preferences were affected by life style, brand and advertising image and preferences of advertising expression forms. And brand image influenced most significantly on the brand preferences.

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A Molecular Model for Light Signal Perception and Interdomain Crosstalk in Phytochrome Photoreceptors

  • Song, Pill-Soon;Park, Chung-Mo
    • Journal of Photoscience
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    • v.7 no.3
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    • pp.79-86
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    • 2000
  • Phytochromes are red and far-red light absorbing photoreceptors for photomorphogenesis in plants. The red/far wavelength reversible biliproteins are made up of two structural domains. The light-perceiving function of the photoreceptor resides in the N-terminal domain, whereas the signal transducing regulatory function is located within the C-terminal domain. The characteristic role of the phytochromes as phtosensory molecular switches is derived from the phototransformation between two distinct spectral forms, the red light absorbing Pr and the far-red light absorbing Pfr forms. The photoinduced Pr Pfr phototransformation accompanies subtle conformational changes throughout the phytochrome molecule. The conformational signals are subsequently transmitted to the C-terminal domain through various inter-domain crosstalks and induce the interaction of the activated C-terminal domain with phytochrome interacting factors. Thus the inter-domain crosstalks play critical roles in the photoactivation of the phytochromes. Posttranslational modifications, such as the phosphorylation of Ser-598, are also involved in this process through conformational changes and by modulating inter-domain signaling.

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A Study on the Characteristics of Scandinavian Furniture Design (스칸디나비아 가구 디자인의 특성에 관한 연구)

  • 이지민
    • Journal of the Korea Furniture Society
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    • v.12 no.1
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    • pp.81-89
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    • 2001
  • Scandinavian countries have hold tradition shared historically and culturally in common, brought the weighty traditional thoughts enabled to develop their unique culture. Since 1940s, Scandinavian design could pervade with affectionate forms and practical effectiveness with worldwide popularity. It was brought by creation of new and useful forms for the convenience in life, functionalism but not bounded by fashion of it. This study tried into the meaning of their history of modern furnishings design based on the development background of furnishings design, its trends, designers and their work focused around Sweden, Finland, and Denmark. Scandinavian furnishings is a functional furnishings reconciled to natural material and human life exactly correspond to the taste of the generation unrestricted from the tradition of contemporary and compact design preference or classic favored preference. The practicality and exquisite techniques of Scandinavian furnishings lies within the realm of possibility for studiously love of the world.

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