• Title/Summary/Keyword: chemical-biological protection

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Comparative Study on the Protective Functions of Clothes (의복의 보호론에 관한 이론적 고찰)

  • Lim Sook Ja
    • Journal of the Korean Society of Clothing and Textiles
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    • v.9 no.3
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    • pp.71-78
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    • 1985
  • This research is designed to systemize the protection theory as well as to supplement the missing theory by organizing various studies on the protective functions of celothes by domestic and foreign scholers of clothing. Human environments is classified two standpoints : (1) Physical environments, and (2) man built psychological environments including socio-physical environments, socio-biological environments, behavioral environments, socio-psychological environments and institution environments. Clothes acting as a physical protection might be of (1) extreme air temperature: Parka; (2) high relative humidity: raincoat; (3) air movement: windbreaker; (4) radiation: space suit; (5) atmospheric pressure: deep sea diver suit; (6) mechanical agent: bullet proof vest; (7) physical agent: (8) chemical agent: (9) biological agent: surgeon's gown, cap, and mask. Also dresses act to support the body comfort, health and the well-being; corset for bad back patient, wrist band for people with weak wrist, bottom half of pressure suit for people with low blood pressure. Clothes acting as a psychological protection might be of (1) influence of magic and of spirits: (2) moral danger; (3) the general unfriendliness of the world as a whole; a reassurance against the lack of love. Clothes should provide the maximum of satisfaction in accordance with the full recognition of reality. The reality should aim at the formulation of general laws concerning the most pleasing forms, colors, and styles to suit. The complex physiological anatomical and psychological aspects of individual personalities.

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Message in a Bottle: Chemical Biology of Induced Disease Resistance in Plants

  • Schreiber, Karl;Desveaux, Darrell
    • The Plant Pathology Journal
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    • v.24 no.3
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    • pp.245-268
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    • 2008
  • The outcome of plant-pathogen interactions is influenced significantly by endogenous small molecules that coordinate plant defence responses. There is currently tremendous scientific and commercial interest in identifying chemicals whose exogenous application activates plant defences and affords protection from pathogen infection. In this review, we provide a survey of compounds known to induce disease resistance in plants, with particular emphasis on how each compound was originally identified, its putative or demonstrated mechanism of defence induction, and the known biological target(s) of each chemical. Larger polymeric structures and peptides/proteins are also discussed in this context. The quest for novel defence-inducing molecules would be aided by the capability for high-throughput analysis of candidate compounds, and we describe some issues associated with the development of these types of screens. Subsequent characterization of hits can be a formidable challenge, especially in terms of identifying chemical targets in plant cells. A variety of powerful molecular tools are available for this characterization, not only to provide insight into methods of plant defence activation, but also to probe fundamental biological processes. Furthermore, these investigations can reveal molecules with significant commercial potential as crop protectants, although a number of factors must be considered for this potential to be realized. By highlighting recent progress in the application of chemical biology techniques for the modulation of plant-pathogen interactions, we provide some perspective on the exciting opportunities for future progress in this field of research.

The Role of Process Systems Engineering for Sustainability in the Chemical Industries (화학공정 산업에서의 지속가능성과 공정시스템 공학)

  • Jang, Namjin;Dan, Seungkyu;Shin, Dongil;Lee, Gibaek;Yoon, En Sup
    • Korean Chemical Engineering Research
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    • v.51 no.2
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    • pp.221-225
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    • 2013
  • Sustainability, in general, means the protection of environmental resources and economic prosperity, with the consideration of the social, economic and environmental effect, as well as human health and the enhancement of life. Profound consideration about sustainability has to handle the overall cycle of feedstock, resource extraction, transportation and production in addition to the environmental effect. Sustainable development of the chemical industries should be carried out complementarily by strengthening the chemical process safety of the industries. In this respect, chemical process safety can be called an opportunity to enhance the compatibility internationally. Changing new paradigm in chemical process safety is formed from the overall life cycle considering basic design of existing systems and production processes. To improve the chemical process safety, the integrated smart system is necessary, comprising various chemical safety database and knowledge base and improved methods of quantitative risk analysis, including management system. This paper discussed the necessity of overall life cycle in chemical process safety and proposed new technology to improve the sustainability. To develop the sustainable industries in process systems engineering, three S, which include Safety, Stability and Security, will have to be combined appropriate.

Identification of reduced plant uptake and reduction effects of azoxystrobin, procymidone and tricyclazole by biochars and quicklime (토양 중 바이오차, 생석회를 이용한 azoxystrobin, procymidone 및 tricyclazole 저감화 효과 연구)

  • Lee, Hyo-Sub;Hwang, In-Seong;Park, Sang-Won;Choi, Geun-Hyoung;Ryu, Song-Hee
    • Journal of Applied Biological Chemistry
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    • v.63 no.3
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    • pp.275-282
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    • 2020
  • As pesticide safety was extended to agricultural environments and Positive List System was carried out, Pesticide safety management in soils has become even more important. To improve pesticide safety in soils needs the degradation technology of the residues in soils and reduce plant uptake of pesticides. In this study, biochars and quicklime as the degradation methods of pesticides (azoxystrboin, procymidone and tricyclazole) were used to identify the reduction effects. The experimental methods were putting biochars and quicklimes (0, 0.5, 1.0, 2.0% per 15 cm soil weight) in soils and analyzing the pesticide residues at 0, 10, 20, 35, 50 day. To identify the reduction effects of uptake from soil to korean cabbages (roots, leave, stems) by biochar treatment, the residues in samples were analyzed. As a results, azoxystrobin (36-96%), procymidone (40-117%) and tricyclazole (26-83%) were reduced in soils when treated with 2.0% quicklime (p<0.05). There were no reduction effect in soils when treated with 1.0% or less biochar. However, the amounts of residues translocated to roots (0.11-1.62 mg/kg), leave (0.05-0.29 mg/kg), stems (0.06-0.1 mg/kg) were reduced treated with 2.0% biochar treatments. The biochar and quicklime can be applicable to agricultural field to improve pesticide safety in soils.

Biological Control of Oomycete Soilborne Diseases Caused by Phytophthora capsici, Phytophthora infestans, and Phytophthora nicotianae in Solanaceous Crops

  • Elena Volynchikova;Ki Deok Kim
    • Mycobiology
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    • v.50 no.5
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    • pp.269-293
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    • 2022
  • Oomycete pathogens that belong to the genus Phytophthora cause devastating diseases in solanaceous crops such as pepper, potato, and tobacco, resulting in crop production losses worldwide. Although the application of fungicides efficiently controls these diseases, it has been shown to trigger negative side effects such as environmental pollution, phytotoxicity, and fungicide resistance in plant pathogens. Therefore, biological control of Phytophthora-induced diseases was proposed as an environmentally sound alternative to conventional chemical control. In this review, progress on biological control of the soilborne oomycete plant pathogens, Phytophthora capsici, Phytophthora infestans, and Phytophthora nicotianae, infecting pepper, potato, and tobacco is described. Bacterial (e.g., Acinetobacter, Bacillus, Chryseobacterium, Paenibacillus, Pseudomonas, and Streptomyces) and fungal (e.g., Trichoderma and arbuscular mycorrhizal fungi) agents, and yeasts (e.g., Aureobasidium, Curvibasidium, and Metschnikowia) have been reported as successful biocontrol agents of Phytophthora pathogens. These microorganisms antagonize Phytophthora spp. via antimicrobial compounds with inhibitory activities against mycelial growth, sporulation, and zoospore germination. They also trigger plant immunity-inducing systemic resistance via several pathways, resulting in enhanced defense responses in their hosts. Along with plant protection, some of the microorganisms promote plant growth, thereby enhancing their beneficial relations with host plants. Although the beneficial effects of the biocontrol microorganisms are acceptable, single applications of antagonistic microorganisms tend to lack consistent efficacy compared with chemical analogues. Therefore, strategies to improve the biocontrol performance of these prominent antagonists are also discussed in this review.

A preparation and Strategy against Chemical and Biological Terrorism (화생방 테러의 양상과 예방대책)

  • Kim, Kyung-Hoe
    • Korean Security Journal
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    • no.5
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    • pp.19-40
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    • 2002
  • For front, aspect of terror may have to prepare indeed even chemical terror or rocket and small size missile and radioactivity terror because is predicted to become various. Furthermore, when see motion of every countries about nuclear engineerses' bringing round and illicit sale of plutonium, our country may have to prepare in terrorism which is expected thus. So that can finish international event successfully because the United States of America supports great manpower and budget since New York's World Trade Center terror and when see that is considering terror prevention countermeasure, we operate temporarily bursting tube state complete charge team such as terror by each field specialist such as a concern interested including special CBR complete charge moving team among 2002 World Cups soccer game period ahead of international event, must consider safety countermeasure. Specially, biology weapon of chemical weapon and cholera etc. 13 kinds of 5000ton that North Korea plans CBR terror society confusion that North Korea that to terror support nation as well as nuclear weapons development suspicion is defending South Korea communization strategy as real condition that is amplified as well as is saving production brand gets imprinted uses CBR terror at normal times, when see that is planing powerlessness communization unity using CBR weapon at time of war, must operate until bias 2002 World Cups international event finishes cooperation safety countermeasure utensil safely under closer talk between the South Korea ${\cdot}$ Japan ${\cdot}$ North Korea. As for us which must serve 2002 World Cup successfully to accomplish perfectly preparedness of CBR terror firstly, all inhabitants knows well CBR protection trick, and secondly, CBR existing formation that solidify realignment CBR complete charge moving team which of course is consisted of CBR specialist compose and keeping immediate going out attitude operating, by third, that expand CBR individual protection equipment and CBR evacuation equipment and establish individual and group protection attitude naturally, supplement as there is main room that actualize CBR pollution patient's slogan countermeasure by fourth, and develop standard model for CBR terror provision by fifthBecause constructing infra of CBR safety establishing CBR preparedness that utilize it, must minimize damage and contribute inhabitants' life and property protection.

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In Vivo Antifungal Activities of the Methanol Extracts of Invasive Plant Species Against Plant Pathogenic Fungi

  • Bajpai, Vivek K.;Baek, Kwang-Hyun;Kim, Eun-Sil;Han, Jeong-Eun;Kwak, Myoung-Hai;Oh, Kyoung-Hee;Kim, Jin-Cheol;Kim, Soon-Ok;Choi, Gyung-Ja
    • The Plant Pathology Journal
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    • v.28 no.3
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    • pp.317-321
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    • 2012
  • Plants are the promising reservoirs for natural products with their diverse secondary metabolites. Many invasive plants have been introduced in Korea, which adversely affect on the native ecosystem but holds difficulty removing them due to their proliferation. In this study, we evaluated disease control efficacy of methanol extracts from four invasive plant species against 7 representative crop pathogens. Methanol extract of Phytolacca americana effectively suppressed rice blast, tomato gray mold, and tomato late blight in a dose dependent manner. The methanol extract of Amorpha fruticosa also exhibited potent antifungal activity against pepper anthracnose in a concentration dependent way. These data suggest that the extracts of P. americana and A. fruticosa can be developed as plant disease protection agents against rice blast, tomato gray mold, tomato late blight, and pepper anthracnose. Furthermore, more extensive research will be required to identify and isolate active compounds from problematic invasive plant species to develop valuable agrochemicals.

Development of Trapezoid type Container for the Export Packaging of Cut-Flowers (절화 수출용 T형 포장상자 개발)

  • Kim, Jong-Kyoung;Kim, Su-Il;Ha, Young-Sun
    • Food Science and Preservation
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    • v.7 no.2
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    • pp.166-170
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    • 2000
  • In order to improve cut-flower export packaging on the distribution process, newly developed T-type(trapezoid type) container was tested and evaluated on the viewpoints of the protection, workability, and economics. T-type container performed better in protection and workability comparing to 0201 and modified 0201 type containers. Especially, load efficiency of T-type container was 33 percent higher than others, indicating that total distribution costs from Korea to Japan can be saved up to 1.7million dollars per year. T-type container is also advantageous because of its superior display performance and environmentally friendly design. We recommend that T-type container is suitable for most of cut-flowers which are usually horizontally packed such as roses, chrysanthemums, and lilies.

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Synthesis of Lysophosphatidylcholine Analogues Using D-Mannitol as a Chiral Template and Their Biological Activity for Sepsis

  • Heo, Hye Jin;Jung, Jun-Sub;Lee, Jung Ho;Han, Su Young;Bang, Hyun Bae;Song, Dong-Keun;Jun, Jong-Gab
    • Bulletin of the Korean Chemical Society
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    • v.27 no.8
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    • pp.1149-1153
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    • 2006
  • LPC analogues including natural and unnatural LPC, 3-L-2-PC, acetylated LPC and ethylene glycol derivative are prepared from D-mannitol using in convenient procedures by only changing the synthetic sequences, and their protective activities against cecal ligation and puncture (CLP)-induced severe sepsis are compared. The chirality at C2 position in LPC is found to be required as (S)-configuration for sepsis inhibition, comparing from the protection activity between LPC 6 and unnatural LPC 8. The hydroxyl functionality is also very important and required at C2 or C3 position as shown in the protection activities of ethylene glycol analogue 11 and 3-L-2-PC 9.