Academic literature on the topic 'Constitutive defense'
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Journal articles on the topic "Constitutive defense"
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Li, Ran, Ming Wang, Yang Wang, Meredith C. Schuman, Arne Weinhold, Martin Schäfer, Guillermo H. Jiménez-Alemán, Andrea Barthel, and Ian T. Baldwin. "Flower-specific jasmonate signaling regulates constitutive floral defenses in wild tobacco." Proceedings of the National Academy of Sciences 114, no. 34 (August 7, 2017): E7205—E7214. http://dx.doi.org/10.1073/pnas.1703463114.
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Optimal defense (OD) theory predicts that within a plant, tissues are defended in proportion to their fitness value and risk of predation. The fitness value of leaves varies greatly and leaves are protected by jasmonate (JA)-inducible defenses. Flowers are vehicles of Darwinian fitness in flowering plants and are attacked by herbivores and pathogens, but how they are defended is rarely investigated. We used Nicotiana attenuata, an ecological model plant with well-characterized herbivore interactions to characterize defense responses in flowers. Early floral stages constitutively accumulate greater amounts of two well-characterized defensive compounds, the volatile (E)-α-bergamotene and trypsin proteinase inhibitors (TPIs), which are also found in herbivore-induced leaves. Plants rendered deficient in JA biosynthesis or perception by RNA interference had significantly attenuated floral accumulations of defensive compounds known to be regulated by JA in leaves. By RNA-seq, we found a JAZ gene, NaJAZi, specifically expressed in early-stage floral tissues. Gene silencing revealed that NaJAZi functions as a flower-specific jasmonate repressor that regulates JAs, (E)-α-bergamotene, TPIs, and a defensin. Flowers silenced in NaJAZi are more resistant to tobacco budworm attack, a florivore. When the defensin was ectopically expressed in leaves, performance of Manduca sexta larvae, a folivore, decreased. NaJAZi physically interacts with a newly identified NINJA-like protein, but not the canonical NINJA. This NINJA-like recruits the corepressor TOPLESS that contributes to the suppressive function of NaJAZi on floral defenses. This study uncovers the defensive function of JA signaling in flowers, which includes components that tailor JA signaling to provide flower-specific defense.
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Coppola, Mariangela, Pasquale Cascone, Simone Bossi, Giandomenico Corrado, Antonio Garonna, Massimo Maffei, Rosa Rao, and Emilio Guerrieri. "TPS Genes Silencing Alters Constitutive Indirect and Direct Defense in Tomato." International Journal of Molecular Sciences 19, no. 9 (September 13, 2018): 2748. http://dx.doi.org/10.3390/ijms19092748.
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Following herbivore attacks, plants modify a blend of volatiles organic compounds (VOCs) released, resulting in the attraction of their antagonists. However, volatiles released constitutively may affect herbivores and natural enemies’ fitness too. In tomato there is still a lack of information on the genetic bases responsible for the constitutive release of VOC involved in direct and indirect defenses. Here we studied the constitutive emissions related to the two most abundant sesquiterpene synthase genes expressed in tomato and their functional role in plant defense. Using an RNA interference approach, we silenced the expression of TPS9 and TPS12 genes and assessed the effect of this transformation on herbivores and parasitoids. We found that silenced plants displayed a different constitutive volatiles emission from controls, resulting in reduced attractiveness for the aphid parasitoid Aphidius ervi and in an impaired development of Spodoptera exigua larvae. We discussed these data considering the transcriptional regulation of key-genes involved in the pathway of VOC metabolism. We provide several lines of evidence on the metabolic flux from terpenoids to phenylpropanoids. Our results shed more light on constitutive defenses mediated by plant volatiles and on the molecular mechanisms involved in their metabolic regulation.
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Ito, Kiyoshi, and Satoki Sakai. "Optimal defense strategy against herbivory in plants: Conditions selecting for induced defense, constitutive defense, and no-defense." Journal of Theoretical Biology 260, no. 3 (October 2009): 453–59. http://dx.doi.org/10.1016/j.jtbi.2009.07.002.
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Nandi, Ashis, Pradeep Kachroo, Hirotada Fukushige, David F. Hildebrand, Daniel F. Klessig, and Jyoti Shah. "Ethylene and Jasmonic Acid Signaling Affect the NPR1-Independent Expression of Defense Genes Without Impacting Resistance to Pseudomonas syringae and Peronospora parasitica in the Arabidopsis ssi1 Mutant." Molecular Plant-Microbe Interactions® 16, no. 7 (July 2003): 588–99. http://dx.doi.org/10.1094/mpmi.2003.16.7.588.
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Salicylic acid (SA), ethylene, and jasmonic acid (JA) are important signaling molecules in plant defense to biotic stress. An intricate signaling network involving SA, ethylene, and JA fine tunes plant defense responses. SA-dependent defense responses in Arabidopsis thaliana are mediated through NPR1-dependent and -independent mechanisms. We have previously shown that activation of an NPR1-independent defense mechanism confers enhanced disease resistance and constitutive expression of the pathogenesis-related (PR) genes in the Arabidopsis ssi1 mutant. In addition, the ssi1 mutant constitutively expresses the defensin gene PDF1.2. Moreover, SA is required for the ssi1-conferred constitutive expression of PDF1.2 in addition to PR genes. Hence, the ssi1 mutant appears to target a step common to SA- and ethylene- or JA-regulated defense pathways. In the present study, we show that, in addition to SA, ethylene and JA signaling also are required for the ssi1-conferred constitutive expression of PDF1.2 and the NPR1-independent expression of PR-1. Furthermore, the ethylene-insensitive ein2 and JA-insensitive jar1 mutants enhance susceptibility of ssi1 plants to the necrotrophic fungus Botrytis cinerea. However, defects in either the ethylene- or JA-signaling pathways do not compromise ssi1-conferred resistance to the bacterial pathogen Pseudomonas syringae pv. maculicola and the oomycete pathogen Peronospora parasitica. Interestingly, ssi1 exhibits a marginal increase in the levels of ethylene and JA, suggesting that low endogenous levels of these phytohormones are sufficient to activate expression of defense genes. Taken together, our results indicate that although cross talk in ssi1 renders expression of ethylene- or JA-responsive defense genes sensitive to SA and vice versa, it does not affect downstream signaling leading to resistance.
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Arnason, John T., and Mark A. Bernards. "Impact of constitutive plant natural products on herbivores and pathogensThe present review is one in the special series of reviews on animal–plant interactions." Canadian Journal of Zoology 88, no. 7 (July 2010): 615–27. http://dx.doi.org/10.1139/z10-038.
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Plants defend themselves from pests with deterrent or toxic phytochemicals. In addition to the development of preformed mechanical barriers such as cutin and suberin, the first line of defense for plants against pathogens and herbivores is constitutive (preformed) biologically active inhibitors. Because of the adaptation of insects and pathogens to these inhibitors, plants have evolved a stunning diversity of new and different bioactive molecules to combat pests. Some representative mechanisms of plant defense include the use of antimicrobial, anitfeedant, and phototoxic molecules. Examples of natural product defenses of specific plant families are also described. Diversity and redundancy in plant defenses is key to slowing pest resistance to host-plant defenses.
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Bixenmann, Ryan J., Phyllis D. Coley, Alexander Weinhold, and Thomas A. Kursar. "High herbivore pressure favors constitutive over induced defense." Ecology and Evolution 6, no. 17 (July 29, 2016): 6037–49. http://dx.doi.org/10.1002/ece3.2208.
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Ellis, Christine, Ioannis Karafyllidis, and John G. Turner. "Constitutive Activation of Jasmonate Signaling in an Arabidopsis Mutant Correlates with Enhanced Resistance to Erysiphe cichoracearum, Pseudomonas syringae, and Myzus persicae." Molecular Plant-Microbe Interactions® 15, no. 10 (October 2002): 1025–30. http://dx.doi.org/10.1094/mpmi.2002.15.10.1025.
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In Arabidopsis spp., the jasmonate (JA) response pathway generally is required for defenses against necrotrophic pathogens and chewing insects, while the salicylic acid (SA) response pathway is generally required for specific, resistance (R) gene-mediated defenses against both biotrophic and necrotrophic pathogens. For example, SA-dependent defenses are required for resistance to the biotrophic fungal pathogen Erysiphe cichoracearum UCSC1 and the bacterial pathogen Pseudomonas syringae pv. maculicola, and also are expressed during response to the green peach aphid Myzus persicae. However, recent evidence indicates that the expression of JA-dependent defenses also may confer resistance to E. cichoracearum. To confirm and to extend this observation, we have compared the disease and pest resistance of wild-type Arabidopsis plants with that of the mutants coi1, which is insensitive to JA, and cev1, which has constitutive JA signaling. Measurements of the colonization of these plants by E. cichoracearum, P. syringae pv. maculicola, and M. persicae indicated that activation of the JA signal pathway enhanced resistance, and was associated with the activation of JA-dependent defense genes and the suppression of SA-dependent defense genes. We conclude that JA and SA induce alternative defense pathways that can confer resistance to the same pathogens and pests.
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Van Alstyne, KL, L. Sutton, and SA Gifford. "Inducible versus constitutive antioxidant defenses in algae along an environmental stress gradient." Marine Ecology Progress Series 640 (April 23, 2020): 107–15. http://dx.doi.org/10.3354/meps13263.
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Optimal defense theory (ODT) predicts that antiherbivore defenses should be constitutive when plants are frequently attacked and inducible when the probability of attack is low. Like antiherbivore defenses, antioxidant defenses can be inducible or constitutive. We hypothesized the ODT predictions should apply to antioxidant defenses; thus, species inhabiting environments where oxidative stresses occur frequently should produce constitutive antioxidant defenses, whereas species in environments where stresses occur less frequently should produce inducible defenses. We tested this hypothesis by attempting to induce production of the antioxidant precursor dimethylsulfoniopropionate (DMSP) in 4 ulvoid algae species that experience different levels of environmental stress because they are zoned along a tidal gradient. The 2 lower intertidal species Ulvaria obscura and Ulva fenestrata, which experience oxidative stresses less frequently, induced DMSP production in response to applications of the chemical oxidant hydrogen peroxide within 7 d, whereas the higher intertidal species Ulva linza and Ulva intestinalis, which regularly experience oxidative stress, did not have increased DMSP concentrations. This study demonstrates a novel waterborne signaling mechanism for DMSP induction in marine macroalgae and provides evidence of selection for inducible antioxidant defenses in organisms experiencing less frequent environmental stresses.
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Yactayo-Chang, Jessica P., Hoang V. Tang, Jorrel Mendoza, Shawn A. Christensen, and Anna K. Block. "Plant Defense Chemicals against Insect Pests." Agronomy 10, no. 8 (August 8, 2020): 1156. http://dx.doi.org/10.3390/agronomy10081156.
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Insect pests cause significant global agricultural damage and lead to major financial and environmental costs. Crops contain intrinsic defenses to protect themselves from such pests, including a wide array of specialized secondary metabolite-based defense chemicals. These chemicals can be induced upon attack (phytoalexins) or are constitutive (phytoanticipins), and can have a direct impact on the pests or be used indirectly to attract their natural enemies. They form part of a global arms race between the crops and their insect pests, with the insects developing methods of suppression, avoidance, detoxification, or even capture of their hosts defensive chemicals. Harnessing and optimizing the chemical defense capabilities of crops has the potential to aid in the continuing struggle to enhance or improve agricultural pest management. Such strategies include breeding for the restoration of defense chemicals from ancestral varieties, or cross-species transfer of defense metabolite production.
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Buckley, James, Foteini G. Pashalidou, Martin C. Fischer, Alex Widmer, Mark C. Mescher, and Consuelo M. De Moraes. "Divergence in Glucosinolate Profiles between High- and Low-Elevation Populations of Arabidopsis halleri Correspond to Variation in Field Herbivory and Herbivore Behavioral Preferences." International Journal of Molecular Sciences 20, no. 1 (January 5, 2019): 174. http://dx.doi.org/10.3390/ijms20010174.
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Variation in local herbivore pressure along elevation gradients is predicted to drive variation in plant defense traits. Yet, the extent of intraspecific variation in defense investment along elevation gradients, and its effects on both herbivore preference and performance, remain relatively unexplored. Using populations of Arabidopsis halleri (Brassicaceae) occurring at different elevations in the Alps, we tested for associations between elevation, herbivore damage in the field, and constitutive chemical defense traits (glucosinolates) assayed under common-garden conditions. Additionally, we examined the feeding preferences and performance of a specialist herbivore, the butterfly Pieris brassicae, on plants from different elevations in the Alps. Although we found no effect of elevation on the overall levels of constitutive glucosinolates in leaves, relative amounts of indole glucosinolates increased significantly with elevation and were negatively correlated with herbivore damage in the field. In oviposition preference assays, P. brassicae females laid fewer eggs on plants from high-elevation populations, although larval performance was similar on populations from different elevations. Taken together, these results support the prediction that species distributed along elevation gradients exhibit genetic variation in chemical defenses, which can have consequences for interactions with herbivores in the field.
Dissertations / Theses on the topic "Constitutive defense"
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Kroupa, Thomas F. "Ecological Consequences of Constitutive versus Inducible Thermal Defense Strategies in Rocky Shore Limpets." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10638863.
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My study was designed to determine how different thermal defense strategies and the intensity of high temperature challenges might affect demographic and physiological performance of limpets on rocky shores. Found together in the high intertidal zone, Lottia scabra employs a constitutive thermal defense strategy, whereas L. austrodigitalis has an inducible one. I measured loss and growth rates of both species as a function of average daily maximum temperature exposure in the field, and respiration rates for field-collected and lab-acclimated individuals under benign conditions in the lab before and after exposure to one of five peak temperatures (14, 24, 28, 32, or 36 °C) during a 4.5-hour simulated low tide. L. scabra was relatively unaffected by exposure to high temperatures, whereas L. austrodigitalis exhibited significant increases in loss rates from experimental plates, decreases in growth rates, and increases in oxygen consumption, consistent with activation of the heat shock response.
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Prusak, Anne C. "Activated and constitutive chemical defenses in freshwater plants." Thesis, Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-06072004-131334/unrestricted/prusak%5Fanne%5Fc%5F200405%5Fms.pdf.
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Corrêa, Marcos José Gomes. "A constituição e sua defesa: Ministério Público como defensor da constituição." Pontifícia Universidade Católica de São Paulo, 2006. https://tede2.pucsp.br/handle/handle/7416.
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Previous issue date: 2006-11-20The present dissertation is intended to examine, from its beginnings, the concept of Constitution and to demonstrate its double significance, political and legal, as well as the means used to guarantee the prevalence of the Constitution in European and North American traditions. The vicissitudes of the defence of the Constitution in Brazil, the broad outlines of organisation and operation of the Judiciary - which, starting from the establishment of the Republican regime in Brazil, had a duty to analyse legislation by contrasting it with the Constitution, thereby confirming its validity - and the role of the Brazilian Public Prosecution Service as an active defender of the Constitution, are also examined. The dissertation confronts the issue of the judicialisation of politics and hopes to demonstrate that the increase in social, cultural and economical rights, in peripheral countries such as Brazil, compels the legal system to enter into contact with conflicts generated in other social systems (economy, health, education, religion, sport etc), the Public Prosecution Service being an important channel - at the same time as introducing discussions about social, cultural and economical rights - for the preservation of the judicial system code (lawful/unlawful) and its self-generating, or "autopoiético", character to keep the centre of the judicial system free of spurious interference from the other social systems
A presente dissertação destina-se a historiar o conceito de Constituição desde seus primórdios e demonstrar seu duplo significado, político e jurídico, bem como os meios utilizados para garantir a prevalência da Constituição nas tradições européia e norte-americana. As vicissitudes da defesa da Constituição no Brasil, as grandes linhas de organização e atuação do Poder Judiciário que, a partir da instauração do regime republicano no Brasil, teve a missão de analisar a legislação em contraste com a Constituição e verificar sua validade e o papel do Ministério Público brasileiro como defensor ativo da Constituição são também dissecadas. A dissertação enfrenta o tema da judicialização da política e pretende demonstrar que o incremento dos direitos sociais, culturais e econômicos em países periféricos como o Brasil força o sistema jurídico a entrar em contato com conflitos gerados em outros sistemas sociais (economia, saúde, educação, religião, esporte etc), sendo o Ministério Público um importante canal para, ao mesmo tempo em que introduz as discussões sobre direitos sociais, culturais e econômicos, preservar o código do sistema jurídico (lícito/ilícito) e manter o caráter autopoiético desse sistema, mantendo o centro do sistema jurídico livre de interferências espúrias dos demais sistemas sociais
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Wang, Qin. "Constitutive and Jasmonate-Inducible Defenses in Phloem of Two North American and Two Asian Ash Species Grown in a Common Garden." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1272493930.
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Spencer, Stephen C. "Japan's Push to Rearm: Neo-Militarism or Self-Preservation." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/cmc_theses/1118.
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This piece tries to determine whether or not Japan’s movement towards rearmament is indicative of a renewed militaristic sentiment or driven by the necessity of improving its defense in view of mounting threats from its age-old enemy, China. The goal of this work is to create a framework using both international events and domestic responses in which to ascertain whether or not the reformation of Article 9 is, in of itself, a reemergence of pre-war bushido/nationalist sentiment or a response to both outside and inside influences necessitating the need for a “normalized” state.
The work focuses on three distinct time periods – early 2000s, latter 2000s, and the 2010s – in which to highlight the initial development, progression, and foreseeable resolution to the Article 9 debate. These stages emphasize several elements persistent in Japan’s quest for a more normalized state, including: the hostile external environment created by the rise of foreign assertiveness, and internal domestic pressures (which to some extent are driven by external pressures) along with its own desire to seek a more normalized position in the international community as well as to gain an enhanced sense of national pride. Additionally a brief synopsis of both the foreign and domestic entities which have contributed to the Japanese reformation movement has been included for better foundational understanding of the question at hand.
In general, results suggested that, though there is some merit towards a reemergence of pre-WWII nationalistic sentiment (especially in the case of the Net Uyoku), the reformation of Article 9 is primarily driven in response to growing tensions – both within East Asia as well as world-wide – as well as a need to assert some semblance of nationalistic identity (an area seriously lacking in Japanese society). Results further implicate that, though the process of reforming Article 9 and thereby revising Japan’s anti-war policy may not be immediate, movement within the Japanese state towards constitutional reformation is indeed on the rise – rearmament being the primary target of said reforms.
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Palma, Renato Jesus Aparecido de Praga. "A escolha da neurose na constituição do sujeito." Universidade do Estado do Rio de Janeiro, 2013. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7773.
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Fundação Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de JaneiroO presente trabalho objetiva discorrer sobre como a psicanálise considera o processo de constituição do sujeito na neurose, para, a partir de então, examinar o motivo pelo qual Freud empregou o termo escolha nesse processo. A pesquisa inicia-se com a análise das contribuições de Freud e de Lacan acerca dos fatores que causam uma neurose. Para isso, será examinada a relação entre trauma, pulsão e fantasia no processo de estruturação subjetiva e será avaliado de que forma o trauma possibilita culminar nas diferentes classes de neurose. Logo em seguida, o trabalho parte para a pesquisa acerca da entrada do organismo vivo na linguagem e sobre a constituição do sujeito. Será realizado um percurso sobre a subversão da ordem instintual quando se é constituído pelo significante, além de se discorrer sobre as especificidades da estrutura neurótica, como a dinâmica do recalque, a constituição da fantasia, a formação dos sintomas e a relação do sujeito com a linguagem e com o seu desejo. Para isso, considerou-se necessário abordar sobre o decurso das primeiras relações da criança com o outro, sobre a inauguração do psiquismo e o advento do sujeito. A partir disso, estabeleceu-se como problema verificar como é possível haver um mecanismo de escolha de estrutura, isto é, de ação seletiva do sujeito em sua constituição, em um contexto em que o autor aproximou a causa da neurose de fenômenos sobredeterminados, definidos por outras circunstâncias que independem do posicionamento subjetivo. Buscou-se questionar como é possível ao sujeito agenciar um mecanismo eletivo em um contexto no qual o próprio sujeito é efeito dessa eleição. Assim, problematizou-se até que ponto há sobredeterminação e participação subjetiva na constituição de uma neurose.
This study aims to analyse how the psychoanalysis considers the process of constitution of the subject in neurosis, to then examine why Freud used the term choice in this process. The research begins with the analysis of the contributions of Freud and Lacan about the factors that cause a neurosis. For this, will be examined the relation between trauma, drive and fantasy in the process of structuring subjective and will be evaluated how the trauma enables culminate in different classes of neurosis. Shortly afterwards, the work starts to research about the entrance of the living organism in the language and about the constitution of the subject. There will be a path about the subversion of the instinctual order when it is constituted by the significant, in addition to discuss the specifics of the neurotic structures, as the dynamics of repression, the constitution of fantasy, the formation of the symptoms and the subjects relation with the language and with his desire. For this, it was considered necessary discuss about the dynamics of the first childs relationship with the other, about the inauguration of the psyche and about the advent of the subject. From this, it was established as a problem analyze how there can be a mechanism of choice of structure, of a selective action of the subject in your constitution, in a context where the author approached the cause of neurosis with overdetermined phenomena, defined by other circumstances that are independent of the positioning of the subject. We sought to question how it is possible for the subject establish an elective mechanism in a context in which who chooses is effect of this election. Therefore, it was questioned until that point there overdetermination and subjective participation in the constitution of neurosis.
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Holtz, Anderson Mathias. "Interações tritróficas afetando os surtos de pragas em Myrtaceae." Universidade Federal de Viçosa, 2001. http://www.locus.ufv.br/handle/123456789/11094.
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As Myrtaceae nativas do Brasil (goiabeira, guabirobeira, jaboticabeira, etc.) abrigam uma entomofauna indígena, a qual sobrevive nestes hospedeiros sem, aparentemente, apresentar surtos populacionais. No eucalipto, que é também uma Myrtaceae, porém exótica, observa-se um aumento do número de espécies de insetos herbívoros que vêm causando sérios prejuízos à eucaliptocultura nacional. Assim, indaga-se por que um mesmo inseto é praga em uma espécie de planta (eucalipto) e em outra não (goiaba). O crescimento, o desenvolvimento e a reprodução dos insetos dependem da quantidade e qualidade do alimento que utilizam. Sabe-se que plantas possuem compostos químicos, e que quando atacadas por insetos herbívoros, tais compostos são utilizados como defesa da planta, prejudicando a performance da praga e/ou servindo como guia (voláteis) para os inimigos naturais (IN) encontrarem estes insetos herbívoros. Em razão do exposto, este trabalho foi dividido em três etapas que abordaram o potencial de sobrevivência e reprodução do inseto herbívoro Thyrinteina arnobia (Lepidoptera: Geometridae) e a atração do predador Podisus nigrispinus (Heteroptera: Pentatomidae) em duas espécies de plantas: Eucalyptus cloesiana (eucalipto) e Psidium guajava (goiaba). Na primeira etapa, avaliou- se o desenvolvimento (biologia) deste herbívoro em folhas de goiaba e eucalipto em laboratório através do cálculo da taxa intrínsica de crescimento (rm). O rm encontrado mostrou que o desenvolvimento de T. arnobia foi melhor no hospedeiro eucalipto (0,103) do que no seu hospedeiro de origem (0.067) (goiaba). Possivelmente, plantas de goiaba possuem compostos químicos que agem negativamente sobre populações de herbívoros e, em eucalipto, aparentemente este tipo de defesa foi suplantado por estes herbívoros. A segunda etapa avaliou a preferência de forrageamento de P. nigrispinus às duas espécies de plantas aqui estudadas. Os ensaios foram realizados utilizando-se três plantas (controle) intercaladas com outras três plantas testes formando um hexágono. No centro desse hexágono foi liberado, em cada teste, um total de 100 percevejos. O experimento constou de quatro repetições para os seguintes tratamentos: (a) plantas de goiaba e eucalipto sem injúria; (b) plantas de eucalipto injuriadas por lagartas de T. arnobia, mas sem a permanência das mesmas nas plantas, e plantas sem injúria; (c) plantas de goiaba injuriadas por lagartas de T. arnobia, mas sem a permanência das mesmas nas plantas, e plantas sem injúria; (d) plantas de eucalipto e goiaba injuriadas por lagartas de T. arnobia, mas sem a permanência das mesmas nas plantas; (e) plantas de eucalipto e goiaba injuriadas por lagartas de T. arnobia, com a permanência das mesmas nas plantas. P. nigrispinus preferiu plantas de goiaba injuriadas por lagartas de T. arnobia com a permanência das mesmas nas plantas. Adicionalmente, plantas injuriadas, por lagartas de T. arnobia, sem a permanência das mesmas nas plantas, foram preferidas pelos percevejos, mesmo quando foram comparadas plantas da mesma espécie nos testes. Plantas sem injúria (limpas) também atraíram os percevejos, porém, a porcentagem de recaptura em plantas de goiaba foi maior que em plantas de eucalipto. Os resultados obtidos neste trabalho demonstram que o predador P. nigrispinus além de discriminar entre os odores liberados por espécies de plantas nativas (goiaba) e eucalipto, também discrimina voláteis associados à herbivoria. A terceira etapa avaliou a mortalidade de T. arnobia em campo em plantas de goiaba e eucalipto, e em laboratório, quando se induziu o sistema de defesa da planta. Em campo, a mortalidade foi maior no hospedeiro goiaba (70,77%) do que no hospedeiro eucalipto (22,00%). No teste de laboratório, para a avaliação de defesa induzida, foram utilizadas folhas de plantas de eucalipto limpas (sem terem sofrido nenhum tipo de injúria) e folhas de plantas de eucalipto injuriadas por lagartas de T. arnobia, para verificar se plantas de eucalipto injuriadas ativam seu mecanismo de defesa contra a herbivoria. A mortalidade larval foi de 30,00% em plantas injuriadas contra 10,00% em plantas limpas. Estes resultados demonstram que, quando atacadas por herbívoros, as plantas de eucalipto ativam seu mecanismo de defesa, o que afeta negativamente o desenvolvimento dos herbívoros. De acordo com os resultados apresentados nesse trabalho, é possível concluir que, as plantas de goiaba não são um hospedeiro adequado para o desenvolvimento e estabelecimento de populações de T. arnobia (apesar de ser um de seus hospedeiros nativos), devido à defesas químicas diretas (que agem sobre o herbívoro) ou indiretas (que atraem IN para predarem herbívoros). Por outro lado, T. arnobia vem, aparentemente, se desenvolvendo, adaptando-se e mantendo suas populações em plantios de eucalipto. De uma forma ou de outra, os herbívoros vêm conseguindo quebrar as barreiras de defesa das plantas em eucalipto, ao contrário com plantas de goiaba, onde esses herbívoros têm maior dificuldade em se estabelecer.
Native Myrtaceae of Brazil (guava tree, guabiroba tree, jaboticaba tree, etc.) they shelter an indigenous entomofauny, which survives in these hosts without, seemingly, present in populational outbreak. In the eucalyptus, that is also a Myrtaceae, even so exotic, an increase of the number of species of herbivore insects is observed that come causing serious damages to the national eucalyptus crop. Thus, the question is, why the same insect is a plague in a type of plant (eucalyptus) and not in other (guava). The growth, the development and the reproduction of the insects depend on the amount and quality of the food that is used. It is known that plants have chemical compounds, and that when attacked by herbivore insects, such compounds are used as a defense of the plant, harming the performance of the pest outbreaks and/or serving as guide (volatile) for the natural enemies (IN) they find these herbivore insects. In reason of the exposed, this work was divided in three stages that approached the survival potential and reproduction of the insect herbivore Thyrinteina arnobia (Lepidoptera: Geometridae) and the attraction of the predator Podisus nigrispinus (Heteroptera: Pentatomidae) in two species of plants: Eucalyptus cloesiana (eucalyptus) and Psidium guajava (guava). In the first stage, the development was evaluated (biology) of this herbivore in guava leaves and eucalyptus in laboratory through the calculation of the rate growth intrinsic (rm). The found rm showed that the development of T. arnobia was better in the host eucalyptus (0.103) than in its origin host (0. 067) (guava). Possibly, guava plants possess chemical compounds that act negatively on populations of herbivores and, in eucalyptus, seemingly this kind of defense was supplanted by these herbivores. The second stage evaluated the preference of foraging of P. nigrispinus to the two species of plants studied here. The rehearsals were accomplished using three plants (it controls) inserted with other three test plants forming an hexagon. In the center of that hexagon it was liberated, in each test, a total of 100 true bug. The experiment consisted of four repetitions for the following treatments: (a) guava plants and eucalyptus without offense; (b) eucalyptus plants reviled by caterpillars of T. arnobia, but without the permanence of the same ones in the plants, and plant without offense; (c) guava plants reviled by caterpillars of T. arnobia, but without the permanence of the same ones in the plants, and plant without offense; (d) eucalyptus plants and guava reviled by caterpillars of T. arnobia, but without the permanence of the same ones in the plants; (e) eucalyptus plants and guava reviled by caterpillars of T. arnobia, with the permanence of the same ones in the plants. P. nigrispinus preferred guava plants reviled by caterpillars of T. arnobia with the permanence of the same ones in the plants. Additeonally, reviled plants, by caterpillars of T. arnobia, without the permanence of the same ones in the plants, they were favorite for the true bug, same when plants of the same species were compared in the tests. Plants without offense (clean) they also attracted the true bug, even so, the percentage of its recaptures in guava plants was larger than in eucalyptus plants. The results obtained in this work demonstrate that the predator P. nigrispinus besides discriminating among the scents liberated by species of native plants (guava) and eucalyptus, also discriminates volatile associated to the herbivory. The third stage evaluated the mortality of T. arnobia in field in guava plants and eucalyptus, and in laboratory, when the system of defense of the plant was induced. In field, the mortality was larger in the host guava (70.77%) than in the host eucalyptus (22.00%). In the laboratory test, for the evaluation of induced defense, leaves of clean eucalyptus plants were used (without having suffered any, kind of offense) and leaves of eucalyptus plants reviled by caterpillars of T. arnobia, to verify if plants of reviled eucalyptus activate its defense mechanism against the herbivory. The larval mortality was of 30.00% in plants reviled against 10.00% in clean plants. These results demonstrate that, when attacked by herbivores, the eucalyptus plants activate their defense mechanism, what affects the development of the herbivores negatively. In agreement with the results presented in that work, it is possible to conclude that, the guava plants are not an adequate host for the development and establishment of populations of T. arnobia (in spite of being one of its native host), due to direct chemical defenses (that act on the herbivore) or insinuations (that attract IN for herbivore predarem). On the other hand, T. arnobia comes, seemingly, developing, it self adapting and maintaining its populations in eucalyptus plantations. One way or another, the herbivores are getting to break the barriers of defense of the plants in eucalyptus, to the contrary with guava plants, where those herbivores have larger difficulty in settling down.
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Whitehead, Daniel K. "An historical study of a criminal defendant's right to exculpatory information under the protection of the Fifth and Fourteenth Amendments of the United States Constitution." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1033641.
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This study has presented a comprehensive historical overview of the context and significance of a, criminal defendants constitutional right to due process of law. The evidence suggests that, in many circumstances, a criminal defendant is not being afforded our most basic constitutional guarantee of fairness and justice for allOne of the primary objectives of this study was to develop a working definition for journalists to better understand the fundamental concepts of a defendants right to exculpatory evidence during criminal proceedings.Since 1791, the Supreme Court has had to continually broaden a criminal defendants right to exculpatory information. In case after case, a similar fad pattern has shown that pauper criminal defendants with court appointed attorneys having to compete against state or federal prosecutors with unlimited investigative and legal research funding This disparity is further compounded when the state or government prosecutors define to turn over information or evidence which could help the defendants case.Further analysis identified other problem areas within the scope of due process which deserve significant attention such as: the grand jury process, plea-bargains, probable cause warrants, and post-conviction hearings.Department of Journalism
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Kraeva, E. Â. "Mecanismes de defense et de developpement de la vigne et de ses baies (vitis vinifera l. ) : evolution des -1,3-glucanases et des composes phenoliques constitutifs et induits." Reims, 1999. http://www.theses.fr/1999REIMS044.
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Proteines - developpement - defense de la baie. Nous avons montre la synthese de glucanases par le fruit (vitis vinifera l ;, cv. Chardonnay) des la veraison et au cours de la maturite. Au cours du stade de croissance herbacee des baies, la presence de chitinases et de glucanases constitutives n'a pas ete montree. En revanche, suite a une blessure ou a une elicitation chimique par l'acide salicylique, nous avons mis en evidence, a ce stade de developpement des fruits, l'induction d'arn messagers de beta-1,3-glucanases. Acide salicylique (as) et blessure - developpement - defense de la baie. Des elicitations par as au stade fermeture de la grappe conduisent a la formation d'une zone necrotique et, de plus, nous ont permis d'observer que la veraison et/ou la maturation des baies traitees est retardee, voire bloquee, c'est a dire que les baies restent vertes et dures ou vertes et molles, deux a trois semaines apres que les baies temoins aient verrees. Les tissus (pellicule et pulpe), des baies de chardonnay ou syrah elicitees par as avant veraison, presentent une necrose cellulaire qui se traduit par le developpement d'une zone de cellules necrosees de plusieurs millimetres autour de la partie traitee. Les baies temoins, dans lesquelles le tampon seul est injecte, ne presente pas de necrose autour des zones traitees. Des la veraison, les baies ramollies et encore vertes ne presentent plus de necrose cellulaire apres traitement par injection de as. Il en est de meme durant la phase de maturation des baies. Phenols - developpement - defense de la baie de raisin. Les flavanes-3-ols totaux (monomeres et oligopolymeres, proanthocyanidines) ont leur biosynthese qui augmentent au cours du stade de croissance herbacee, pour se stabiliser des la veraison. Les flavonols sont synthetises des le stade de croissance herbacee et augmentent apres la veraison. La blessure induit la biosynthese des flavonols au stade de croissance herbacee, dans les tissus sains situes autour de la blessure, et ne modifie pas la biosynthese des tanins. Le traitement par injection d'as nous a permis d'observer, dans la zone de cellules necrosees, une diminution des tanins et des flavonols et une augmentation du degre de polymerisation des tanins. Autour de la zone necrosee il y a induction des flavonols et des derives d'acide cafeique. Il n'y a pas de modification des tanins.
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Tollefson, Julie Jo. "Japan's Article 9 and Japanese Public Opinion: Implications for Japanese Defense Policy and Security in the Asia Pacific." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1526812071227061.
Full textBooks on the topic "Constitutive defense"
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Center for Judicial Studies (U.S.), ed. In defense of the constitution. Cumberland, Va: James River Press, 1989.
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Singh, Robert S. In Defense of the United States Constitution. New York, NY: Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781351117708.
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Lines of defense: Police ideology and the Constitution. Jacksonville, Fla: Institute of Police Technology and Management, 2000.
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Brinkley, Alan. New Federalist papers: Essays in defense of the Constitution. New York: Norton, 1997.
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Nishi, Osamu. The constitution and the national defense law system in Japan. Tokyo: Seibundo, 1987.
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Brinkley, Alan. The new Federalist papers: Essays in defense of the Constitution. New York: Twentieth Century Fund, 1997.
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Osamu, Nishi. The Constitution and the National Defense Law system in Japan. Tokyo: Seibundo Pub. Co., 1987.
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Hinman, Marjory Barnum. Daniel S. Dickinson, defender of the Constitution. Windsor, N.Y: M.B. Hinman, 1987.
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Our unsettled constitution: A new defense of constitutionalism and judicial review. New Haven: Yale University Press, 2001.
Find full textBook chapters on the topic "Constitutive defense"
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Oros, Gyula, and Zoltán Kállai. "Phytoanticipins: The Constitutive Defense Compounds as Potential Botanical Fungicides." In Bioactive Molecules in Plant Defense, 179–229. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-27165-7_11.
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Duenas, Terrisa, Jennifer Schlitter, Naida Lacevic, Akhilesh Jha, Karen Chai, Fred Wudl, Lucas Westcott-Baker, Ajit Mal, Aaron Corder, and Teng K. Ooi. "Ballistic Missile Defense System (BMDS) Solutions Using Remendable Polymers." In Time Dependent Constitutive Behavior and Fracture/Failure Processes, Volume 3, 267–73. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9794-4_37.
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Hadacek, Franz. "Constitutive Secondary Plant Metabolites and Soil Fungi: Defense Against or Facilitation of Diversity." In Secondary Metabolites in Soil Ecology, 207–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-74543-3_10.
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Archard, David. "The Constitution of the Family." In The Family: A Liberal Defence, 51–62. London: Palgrave Macmillan UK, 2010. http://dx.doi.org/10.1057/9780230294578_3.
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Singh, Robert S. "Introduction." In In Defense of the United States Constitution, 1–18. New York, NY: Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781351117708-1.
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Singh, Robert S. "Constitutional Critiques." In In Defense of the United States Constitution, 19–44. New York, NY: Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781351117708-2.
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Singh, Robert S. "The Preamble, Then and Now." In In Defense of the United States Constitution, 45–78. New York, NY: Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781351117708-3.
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Singh, Robert S. "Governing Institutions." In In Defense of the United States Constitution, 79–130. New York, NY: Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781351117708-4.
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Singh, Robert S. "Amendments and Interpretations." In In Defense of the United States Constitution, 131–60. New York, NY: Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781351117708-5.
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Bennesved, Peter, and Casper Sylvest. "Embedding Preparedness, Assigning Responsibility: The Role of Film in Sociotechnical Imaginaries of Civil Defence." In Cold War Civil Defence in Western Europe, 103–28. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-84281-9_5.
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AbstractThis chapter examines the role of film and television in embedding sociotechnical imaginaries of civil defence during the early nuclear age (c. 1949–1965) by zooming in on Sweden and Denmark, two neighbouring countries that differed both in terms of their political position in the Cold War and in the scale of their civil defence efforts. Following a theoretical discussion of the psychosocial effects of films and their manner of circulation, we analyse Swedish and Danish films in two periods demarcated by the thermonuclear disruption of civil defence during the mid-1950s. The analysis highlights how films were used to frame technologies and script and perform social norms. We argue that films constitute an important source for understanding the difficulties of embedding sociotechnical imaginaries of civil defence.
Conference papers on the topic "Constitutive defense"
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Lall, Pradeep, Vikas Yadav, Jeff Suhling, and David Locker. "Low Temperature Material Characterization of Lead-Free SAC Solder Alloy at High Strain Rate After Prolonged High Temperature Storage." In ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/ipack2021-74068.
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Abstract During operations, handling, and storage in extreme environmental applications including aerospace, defense and automotive, the electronics may be exposed to high and low operating temperatures. In automotive underhood applications, the temperature can vary especially from −65 to +200 °C. Under prolonged storage, SnAgCu solder materials have been shown to continually evolve in the mechanical properties. New doped SAC solder alloys have recently been introduced with the addition of Ni, Co, Au, P, Ga, Cu and Sb to SAC solder alloy to increase the robustness under prolonged thermal exposure. High strain-rate data on SAC solder alloys after prolonged storage operating at low operating temperatures is not available in published literature. In this paper, materials characterization of SAC (SAC105 and SAC-Q) solder after prolonged storage at low operating temperatures (−65°C–0 °C) and at high strain rates (10–75 per sec) has been studied. The fabricated SAC leadfree solder specimens were isothermally aged up to 12 months at 50°C before testing. Anand Viscoplastic model has been used to compute 9 anand parameters from measured Tensile data to describe the material constitutive behavior. The computed 9 anand parameters were used to verify the accuracy of the Anand model. A good correlation was found between experimental data and Anand predicted data.
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Zhang, Yifei, Zijie Cai, Jeffrey C. Suhling, and Pradeep Lall. "Aging Effects on the Mechanical Behavior and Reliability of SAC Alloys." In ASME 2009 InterPACK Conference collocated with the ASME 2009 Summer Heat Transfer Conference and the ASME 2009 3rd International Conference on Energy Sustainability. ASMEDC, 2009. http://dx.doi.org/10.1115/interpack2009-89373.
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The microstructure, mechanical response, and failure behavior of lead free solder joints in electronic assemblies are constantly evolving when exposed to isothermal aging and/or thermal cycling environments. In our prior work on aging effects, we have demonstrated that the observed material behavior variations of Sn-Ag-Cu (SAC) lead free solders during room temperature aging (25°C) and elevated temperature aging (125°C) were unexpectedly large and universally detrimental to reliability. Such effects for lead free solder materials are especially important for the harsh applications environments present in high performance computing and in automotive, aerospace, and defense applications. However, there has been little work in the literature, and the work that has been done has concentrated on the degradation of solder ball shear strength (e.g. Dage Shear Tester). Current finite element models for solder joint reliability during thermal cycling accelerated life testing are based on traditional solder constitutive and failure models that do not evolve with material aging. Thus, there will be significant errors in the calculations with the new lead free SAC alloys that illustrate dramatic aging phenomena. In the current work, we have extended our previous studies to include a full test matrix of aging temperatures and solder alloys. The effects of aging on mechanical behavior have been examined by performing stress-strain and creep tests on four different SAC alloys (SAC105, SAC205, SAC305, SAC405) that were aged for various durations (0–6 months) at room temperature (25°C), and several elevated temperatures (50, 75, 100, and 125°C). Analogous tests were performed with 63Sn-37Pb eutectic solder samples for comparison purposes. Variations of the mechanical and creep properties (elastic modulus, yield stress, ultimate strength, creep compliance, etc.) were observed and modeled as a function of aging time and aging temperature. In this paper, we report on the creep results. The chosen selection of SAC alloys has allowed us to explore the effects of silver content on aging behavior (we have examined SACN05 with N = 1%, 2%, 3%, and 4% silver; with all alloys containing 0.5% copper). In order to reduce the aging induced degradation of the material behavior of the SAC alloys, we are testing several doped SAC alloys in our ongoing work. These materials include SAC0307-X, SAC105-X, and SAC305-X; where the standard SAC alloys have been modified by the addition of small percentages of one or more additional elements (X). Using dopants (e.g. Bi, In, Ni, La, Mg, Mn, Ce, Co, Ti, etc.) has become widespread to enhance shock/drop reliability, and we have extended this approach to examine the ability of dopants to reduce the effects of aging and extend thermal cycling reliability.
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Ma, Hongtao, Jeffrey C. Suhling, Yifei Zhang, Pradeep Lall, and Michael J. Bozack. "Evolution of Lead Free Solder Material Behavior Under Elevated Temperature Aging." In ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ipack2007-33545.
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The microstructure, mechanical response, and failure behavior of lead free solder joints in electronic assemblies are constantly evolving when exposed to isothermal aging and/or thermal cycling environments. In our prior work on aging effects (Ma, et al., ECTC 2006), we demonstrated that the observed material behavior variations of SAC405 and SAC305 lead free solders during room temperature aging (25 °C) were unexpectedly large and universally detrimental to reliability. Such effects for lead free solder materials are much more dramatic at the higher aging temperatures (e.g. 100–150 °C) typical of the harsh environments present in high performance computing and in automotive, aerospace, and defense applications. However, there has been little work in the literature, and the work that has been done has concentrated on the degradation of solder ball shear strength (e.g. Dage Shear Tester). Current finite element models for solder joint reliability during thermal cycling accelerated life testing are based on traditional solder constitutive and failure models that do not evolve with material aging. Thus, there will be significant errors in the calculations with the new lead free SAC alloys that illustrate dramatic aging phenomena. In the current work, we have explored the effects of elevated temperature isothermal aging on the mechanical behavior and reliability of lead free solders. The effects of aging on mechanical behavior have been examined by performing stress-strain and creep tests on SAC405 and SAC305 samples that were aged for various durations (0–6 months) at several elevated temperatures (80, 100, 125, and 150 °C). Analogous tests were performed with 63Sn-37Pb eutectic solder samples for comparison purposes. Variations of the temperature dependent mechanical properties (elastic modulus, yield stress, ultimate strength, creep compliance, etc.) were observed and modeled as a function of aging time and temperature. In this paper, we have concentrated our efforts on presenting the results for samples aged at 125 °C. In addition, the new elevated temperature aging data were correlated with our room temperature results from last year’s investigation. The results obtained in this work have demonstrated the significant effects of elevated temperature exposure on solder joints. As expected, the mechanical properties evolved at a higher rate and experienced larger changes during elevated temperature aging (compared to room temperature aging). After approximately 200 hours of aging, the lead free solder joint material properties were observed to degrade at a nearly constant rate. We have developed a mathematical model to predict the variation of the properties with aging time and aging temperature. Our data for the evolution of the creep response of solders with elevated temperature aging show that the creep behavior of lead free and tin-lead solders experience a “crossover point” where lead free solders begin to creep at higher rates than standard 63Sn-37Pb solder for the same stress level. Such an effect is not observed for solder joints aged at room temperature, where SAC alloys always creep at lower rates than Sn-Pb solder.
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Gron, Silvia, and Eleni Gkrimpa. "Le città nelle fortificazioni: le isole ioniche in Grecia. Conoscenza e valorizzazione di un patrimonio." In FORTMED2020 - Defensive Architecture of the Mediterranean. Valencia: Universitat Politàcnica de València, 2020. http://dx.doi.org/10.4995/fortmed2020.2020.11533.
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The cities in the fortifications: the Ionian islands in Greece. Knowledge and enhancement of a heritage Residing in the Mediterranean Sea, Ionian islands signify the passage from the west to the east. A constantly sought-after region due to the trade routes, was for a long time garrisoned and under the authority of the Venetian Republic (fourteenth-eighteenth centuries) that hindered with its fleet the Turkish invasions. The bigger islands that constitute the cluster of the Eptanisa: Corfu, Lefkada or Santa Maura, Ithaka, Kefalonia, Kythira, Zakinthos and more, that had strategic positions with respect to the usual routes, had since the middle ages fortifications like walls, towers and castles, that over the time were expanded and restructured by the Venetians in order to defend those islands from the enemy attacks. The rich iconographic historic material, considering the Ionian Islands, allows to document the characteristics of those wide spread defensive structures and to identify each strong part of this big and unique fortification cluster. It has to be noted that every one of those structures gives us clues about the urban history of the city it resides since they were part of the urban landscape revealing this way the urban layout. The compelling story of the architectural consistency of those fortresses, as it is described in the historic documents, cannot be always verified. Many of those structures are nowadays completely destroyed and only a few remains are left. There are many ways to organize a project for saving those structures and in particular one that will be related with the cultural tourism.
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Barnett, Ralph L. "Anti-Evisceration Rings: Proof of Concept." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88131.
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Domed suction entrapment covers (grates) are generally mounted on cylindrical sumps or frames (mud rings) that are permanently installed in the bottoms or sidewalls of swimming or wading pools. These covers constitute a first-line-of-defense against the danger of evisceration by preventing children from sealing the sumps and drains with their buttock. When the covers are missing, loose, or broken, sealing a sump with their backsides exposes their bowels to dangerous levels of suction that cause disembowelment in a fraction of a second. There is an emerging paradigm shift in the aquatic’s industry that calls for equivalent protection for covered and uncovered sumps and frames. Using a simple concept patented by Barnett (2001) [1], the planar circle formed by the inside edge of a sump is replaced by a non-planar edge, e.g., scalloped or castellated. Edge geometry is chosen that will not conform to human body parts to preclude sealing. Testing inexpensive prototypes demonstrated that the proposed anti-evisceration rings reduce the body removal force from 324 lb. to 10 to 17 lb. Further, they lower the maximum pump vacuum from −14.3 psi to −1 to −2 psi.
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Georgopoulos, Andreas, Margarita Skamantzari, and Sevi Tapinaki. "Digitally Developing Medieval Fortifications." In FORTMED2020 - Defensive Architecture of the Mediterranean. Valencia: Universitat Politàcnica de València, 2020. http://dx.doi.org/10.4995/fortmed2020.2020.11468.
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Modern technological advances have enabled digital automated methods to be applied for accurate and detailed documentation. Such techniques include image based modelling and terrestrial laser scanning. They can easily be adapted to perfectly suit the documentation needs for small and large objects. In this paper the digital geometric documentation of two medieval fortifications using such contemporary methods is briefly described. These are the western part of the Castle of Chios and an important part of the medieval Rhodes fortifications. The purpose of the geometric documentation for both cases was the restoration of these parts, hence detailed documentation was necessary. Conventional two-dimensional plans with digital orthophotographs were produced and from them conventional line drawings were required for the case of Chios castle. Both castle parts included cylindrical bastions, whose projection on two dimensional plans is obviously deformed. Such non-planar parts constitute a special challenge for the geometric documentation. To solve this problem the three-dimensional digital documentations of these parts were developed by using suitable development routines. Thorough presentation of all considerations for these developments are presented and the implementations are briefly described. The results of these developments are evaluated for their usefulness, accuracy, and efficiency as digital documentation products.
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Serafini, Lucia. "Castelli e borghi fortificati nell’Appennino centrale d’Italia. Storia e conservazione." In FORTMED2020 - Defensive Architecture of the Mediterranean. Valencia: Universitat Politàcnica de València, 2020. http://dx.doi.org/10.4995/fortmed2020.2020.11364.
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Castles and fortified villages in the central Apennines of Italy. History and conservationThe areas of the central Apennines of Italy constitute a particularly interesting research laboratory with its perched towns and its castles. Here there is a close link between the quantity of fortifications and the prevailing mountainous terrain. This has fixed in the history of the places a condition of correspondence that acts as a counterpoint to all its culture, from the economy to the costumes to the forms of the settlement. The inhabited centers also managed to guard the territory, like the numerous castles built during the Middle Ages close to rocky and harsh slopes. This because they are located in places that due to the altitude were naturally fortified, but which at supplement were enhanced with closed and compact building fabrics. The fortified villages have often elicited, with their walled houses and the steep and narrow streets, the representations of travelers-artists from the nineteenth century like the Dutchman Maurits Cornelis Escher. The purpose of this contribution is to draw attention to the reality of an architectural heritage that goes beyond the isolated episode of the feudal castle to create a network with natural and anthropic contexts of wider horizon. These are today subject to severe loss of identity due to the marginal position they often find themselves in and also to the action of the many earthquakes that have raged over time.
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Adorni, Martina, Alessandro Del Nevo, Paul Van Uffelen, Francesco Oriolo, and Francesco D’Auria. "Assessment of TRANSURANUS Fuel Performance Code Against Studsvik Inter-Ramp BWR Database." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75704.
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The fuel matrix and the cladding constitute the first barrier against radioactive fission product release. Therefore a defense in depth concept requires also the comprehensive understanding of fuel rod behavior and accurate prediction of the lifetime in normal operation and in accident condition as well. Investigations of fuel behavior are carried out in close connection with experimental research operation feedback and computational analyses. In this connection, OECD NEA sets up the “public domain database on nuclear fuel performance experiments for the purpose of code development and validation - International Fuel Performance Experiments (IFPE) database”, with the aim of providing a comprehensive and well-qualified database on UO2 fuel with Zr cladding for model development and code validation. This database includes the data set of the Studsvik Inter-Ramp BWR Project. The objectives of the project are to establish the failure-safe operating limits and the failure mechanism and associated phenomena, during power ramp tests, by varying the design parameters (i.e. cladding heat treatment, gap thickness and fuel density). The experimental data are used for the assessment of the Fission Gas Release (FGR) models implemented in the TRANSURANUS code versions “v1m1j07” and “v1m1j08”. The starting point of the activity is the availability of a “new” transient fission gas release model, the “TFGR model”, specifically implemented in the last code version, to cover power ramp conditions. The paper presents the complete set of simulations of all twenty rods irradiated in the R2 research reactor and the corresponding comparisons with the experimental data. Sensitivity calculations are also performed to address the influence of geometric parameters and the choice of the different code options, relevant to model the FGR, on results.
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Mileto, Camilla, Fernando Vegas, Lidia García-Soriano, and Salvador Tomás Marquez. "El Castillo de La Vilavella (Castellón). Estudios y primeras actuaciones de conservación." In FORTMED2020 - Defensive Architecture of the Mediterranean. Valencia: Universitat Politàcnica de València, 2020. http://dx.doi.org/10.4995/fortmed2020.2020.11399.
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The Castle of La Vilavella (Castellón). Surveys and first conservation actionsThe castle of La Vilavella (Castellón) stands on the slopes of San Sebastián, and its various constructions follow the craggy relief of the hill, on the outskirts of the town to the west. The castle is currently an imposing ruin on top of a hill, a landmark which dominates the inland landscape as well as the plains to the sea. Part of the castle’s walled complex, which stretches along 230 m of the local topography with a maximum width of 60 m, is conserved. The walled complex incorporates a sequence of towers of different types, forms, and constructive techniques which reflect the different periods in which the complex was built. This article aims to present the conservation project carried out in the castle, as well as the prior analyses and completed work based on these. The starting point for this conservation project was that the actions on a major heritage asset such as this constitute another phase for learning about its material history. They also make it possible to continue research into its material and constructive history through new archaeological excavations such as the study of its constructive elements. The interventions carried out aim to respect the construction of the castle at both a material and aesthetic level, returning it to a physical condition which honours its history and helps prolong its useful life. The conservation work carried out, necessary to ensure consolidation, has focused mostly on the walls of the different structures and adaptation and musealisation actions of the castle complex.
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Bangaru, Mohan, Thirumal Azhagan Murugan, and Rajadurai Arunachalam. "Development of Metal Matrix Nanocomposites of AA6061 – SiCp Using Ultrasonic Cavitations in Squeeze Casting Process." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53151.
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In the recent days, aerospace, automotive and defense sectors have been the main driving force behind the search of lighter and stronger materials in order to use in the production of vehicles. The growing demand for the production of light weight structural components and systems is fulfilled by the development of innovative metallic materials such as composites and alloys particularly based on aluminium because of their desirable properties such as low density, good castability, excellent strength and excellent corrosion resistance. Widely employed processes such as gravity and pressure die casting are used for processing aluminium alloys but the components exhibit several casting defects such as porosity, cracks, segregation and hot tears etc. This drives the industries to develop new processes which produce defect free components in shorter time as they have been under competitive pressure. Of the many such processes, squeeze casting has good capacity to produce less defective components. Squeeze casting is the process in which the molten metal solidifies under the application of pressure. The development of Aluminium Matrix Composites (AMCs) through squeeze casting has been one of the major areas of research in recent times. Research works on AMCs reinforced with micrometric particles have shown that the ability to strengthen the matrix alloy by them is lesser than nanometric particles. Metal matrices reinforced with nanoparticles are characterized by significant improvement in strength and wear resistance, improved ductility and improved dimensional stability at elevated temperatures. But, nanosized ceramic particles constitute problems during fabrication as it is extremely difficult to obtain uniform dispersion of nanoparticles in liquid metals owing to their high viscosity, poor wettability in the metal matrix, and a large surface-to-volume ratio. These problems induce agglomeration and clustering of nanoparticles. The nanoparticles can be dispersed uniformly in the metal matrix by means of employing ultrasonic cavitations. Ultrasonic cavitations include the formation, growth and collapse of micro-bubbles in liquids, under cyclic high intensity ultrasonic waves. The cavitation bubbles collapse and generate a huge amount of energy, which could be used in dispersion of the nanoparticles more uniformly in the melt. In this study, squeeze casting is combined with ultrasonic cavitations to develop Metal Matrix Nanocomposites (MMNCs) of AA6061 – SiCp as a maiden attempt. The impact of varying volume percentage of SiCp nanoparticles (average size of 45 nm – 65 nm) by ultrasonic cavitations on mechanical properties such as ultimate tensile strength and hardness exhibited by MMNCs were analyzed. In this research, volume percentage of SiCp nanoparticles was varied at 0.4%, 0.8% and 1.2% respectively by employing ultrasonic vibrations at the amplitude of 70 μm to the melt of AA6061. The melt of AA6061-SiCp was poured into the pre heated die cavity and squeeze pressure of 105 Mpa was applied over it for a certain period while developing MMNCs. Scanning Electron Microscope (SEM) images showed the uniform distribution of SiCp nanoparticles in AA6061 matrix. Energy Dispersive Spectroscopy (EDS) in SEM confirmed the incorporation of SiCp in AA6061 matrix. The obtained results confirmed the effectiveness of ultrasonic cavitations in squeeze casting process to disperse the nanoparticles of SiCp uniformly in AA6061 matrix. The mechanical properties of MMNCs such as ultimate tensile strength and hardness exhibited an increasing trend with respect to the increase in volume percentage of SiCp nanoparticles. Thus there prevails a great scope to develop MMNCs of aluminium using ultrasonic cavitations in squeeze casting process.
Reports on the topic "Constitutive defense"
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Deming, Rust. Japan's Constitution and Defense Policy: Entering a New Era? Fort Belvoir, VA: Defense Technical Information Center, November 2004. http://dx.doi.org/10.21236/ada430090.
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Ashley, Caitlyn, Elizabeth Spencer Berthiaume, Philip Berzin, Rikki Blassingame, Stephanie Bradley Fryer, John Cox, E. Samuel Crecelius, et al. Law and Policy Resource Guide: A Survey of Eminent Domain Law in Texas and the Nation. Edited by Gabriel Eckstein. Texas A&M University School of Law Program in Natural Resources Systems, 2017. http://dx.doi.org/10.37419/eenrs.eminentdomainguide.
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Eminent Domain is the power of the government or quasi-government entities to take private or public property interests through condemnation. Eminent Domain has been a significant issue since 1879 when, in the case of Boom Company v. Patterson, the Supreme Court first acknowledged that the power of eminent domain may be delegated by state legislatures to agencies and non-governmental entities. Thus, the era of legal takings began. Though an important legal dispute then, more recently eminent domain has blossomed into an enduring contentious social and political problem throughout the United States. The Fifth Amendment to the United States Constitution states, “nor shall private property be taken for public use, without just compensation.” Thus, in the wake of the now infamous decision in Kelo v. City of New London, where the Court upheld the taking of private property for purely economic benefit as a “public use,” the requirement of “just compensation” stands as the primary defender of constitutionally protected liberty under the federal constitution. In response to Kelo, many state legislatures passed a variety of eminent domain reforms specifically tailoring what qualifies as a public use and how just compensation should be calculated. Texas landowners recognize that the state’s population is growing at a rapid pace. There is an increasing need for more land and resources such as energy and transportation. But, private property rights are equally important, especially in Texas, and must be protected as well. Eminent domain and the condemnation process is not a willing buyer and willing seller transition; it is a legally forced sale. Therefore, it is necessary to consider further improvements to the laws that govern the use of eminent domain so Texas landowners can have more assurance that this process is fair and respectful of their private property rights when they are forced to relinquish their land. This report compiles statutes and information from the other forty-nine states to illustrate how they address key eminent domain issues. Further, this report endeavors to provide a neutral third voice in Texas to strike a more appropriate balance between individual’s property rights and the need for increased economic development. This report breaks down eminent domain into seven major topics that, in addition to Texas, seemed to be similar in many of the other states. These categories are: (1) Awarding of Attorneys’ Fee; (2) Compensation and Valuation; (3) Procedure Prior to Suit; (4) Condemnation Procedure; (5) What Cannot be Condemned; (6) Public Use & Authority to Condemn; and (7) Abandonment. In analyzing these seven categories, this report does not seek to advance a particular interest but only to provide information on how Texas law differs from other states. This report lays out trends seen across other states that are either similar or dissimilar to Texas, and additionally, discusses interesting and unique laws employed by other states that may be of interest to Texas policy makers. Our research found three dominant categories which tend to be major issues across the country: (1) the awarding of attorneys’ fees; (2) the valuation and measurement of just compensation; and (3) procedure prior to suit.
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Chejanovsky, Nor, and Bruce A. Webb. Potentiation of pest control by insect immunosuppression. United States Department of Agriculture, July 2004. http://dx.doi.org/10.32747/2004.7587236.bard.
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Our original aims were to elucidate the mechanisms through which the immunosuppressive insect virus, the Campoletis sonorensis polydnavirus (CsV) promotes replication of a well-characterized pathogenic virus, the Autographa californica multiple nucleopolyhedrovirus (AcMNPV) in hosts that are mildly or non-permissive to virus replication. According to the BARD panels criticism we modified our short-term goals (see below). Thus, in this feasibility study (one-year funding) we aimed to show that: 1. S. littoralis larvae mount an immune response against a baculovirus infection. 2. Immunosuppression of an insect pest improves the ability of a viral pathogen (a baculovirus) to infect the pest. 3. S. littoralis cells constitute an efficient tool to study some aspects of the anti- viral immune response. We achieved the above objectives by: 1. Finding melanized viral foci upon following the baculoviral infection in S . littoralis larvae infected with a polyhedra - positive AcMNPV recombinant that expressed the GFP gene under the control of the Drosophila heat shock promoter. 2. Studying the effect of AcMNPV-infection in S . littoralis immunosuppressed by parasitation with the Braconidae wasp Chelonus inanitus that bears the CiV polydna virus, that resulted in higher susceptibility of S. littoralis to AcMNPV- infection. 3. Proving that S. littoralis hemocytes resist AcMNPV -infection. 4. Defining SL2 as a granulocyte-like cell line and demonstrating that as littoralis hemocytic cell line undergoes apoptosis upon AcMNPV -infection. 5. Showing that some of the recombinant AcMNPV expressing the immuno-suppressive polydna virus CsV- vankyrin genes inhibit baculoviral-induced lysis of SL2 cells. This information paves the way to elucidate the mechanisms through which the immuno- suppressive polydna insect viruses promote replication of pathogenic baculoviruses in lepidopteran hosts that are mildly or non-permissive to virus- replication by: - Assessing the extent to which and the mechanisms whereby the immunosuppressive viruses, CiV and CsV or their genes enhance AcMNPV replication in polydnavirus- immunosuppressed H. zea and S. littoralis insects and S. littoralis cells. - Identifying CiV and CsV genes involved in the above immunosuppression (e.g. inhibiting cellular encapsulation and disrupting humoral immunity). This study will provide insight to the molecular mechanisms of viral pathogenesis and improve our understanding of insect immunity. This knowledge is of fundamental importance to controlling insect vectored diseases of humans, animals and plants and essential to developing novel means for pest control (including baculoviruses) that strategically weaken insect defenses to improve pathogen (i.e. biocontrol agent) infection and virulence.
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Ayala, David, Ashley Graves, Colton Lauer, Henrik Strand, Chad Taylor, Kyle Weldon, and Ryan Wood. Flooding Events Post Hurricane Harvey: Potential Liability for Dam and Reservoir Operators and Recommendations Moving Forward. Edited by Gabriel Eckstein. Texas A&M University School of Law Program in Natural Resources Systems, September 2018. http://dx.doi.org/10.37419/eenrs.floodingpostharvey.
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When Hurricane Harvey hit the Texas coast as a category 4 hurricane on August 25, 2017, it resulted in $125 billion in damage, rivaling only Hurricane Katrina in the amount of damage caused. It also resulted in the deaths of 88 people and destroyed or damaged 135,000 homes. Much of that devastation was the result of flooding. The storm dumped over 27 trillion gallons of rain over Texas in a matter of days. Some parts of Houston received over 50 inches of rainfall. The potential liability that dam and reservoir operators may face for decisions they make during storm and flooding events has now become a major concern for Texas citizens and its elected officials. Law suits have now been instituted against the federal government for its operation of two flood control reservoirs, as well as against the San Jacinto River Authority for its operation of a water supply reservoir. Moreover, the issues and concerns have been placed on the agenda of a number of committees preparing for the 2019 Texas legislative session. This report reviews current dam and reservoir operations in Texas and examines the potential liability that such operators may face for actions and decisions taken in response to storm and flooding events. In Section III, the report reviews dam gate operations and differentiates between water supply reservoirs and flood control reservoirs. It also considers pre-release options and explains why such actions are disfavored and not recommended. In Section IV, the report evaluates liabilities and defenses applicable to dam and reservoir operators. It explains how governmental immunity can limit the exposure of state and federally-run facilities to claims seeking monetary damages. It also discusses how such entities could be subject to claims of inverse condemnation, which generally are not subject to governmental immunity, under Texas law as well as under the Fifth Amendment to the U.S. Constitution. In addition, the Section discusses negligence and nuisance claims and concludes that plaintiffs asserting either or both of these claims will have difficulty presenting successful arguments for flooding-related damage and harm against operators who act reasonably in the face of storm-related precipitation. Finally, Section V offers recommendations that dam and reservoir operators might pursue in order to engage and educate the public and thereby reduce the potential for disputes and litigation. Specifically, the report highlights the need for expanded community outreach efforts to engage with municipalities, private land owners, and the business community in flood-prone neighborhoods both below and above a dam. It also recommends implementation of proactive flood notification procedures as a way of reaching and alerting as many people as possible of potential and imminent flooding events. Finally, the report proposes implementation of a dispute prevention and minimization mechanism and offers recommendations for the design and execution of such a program.
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STATEMENT OF THE NATIONAL ACADEMY OF EDUCATIONAL SCIENCES OF UKRAINE. National Academy of Educational Sciences of Ukraine, February 2022. http://dx.doi.org/10.37472/saveukraine.
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We consider it criminal and strongly condemn the violation of the territorial integrity and borders of Ukraine by the Russian Federation. We also consider inadmissible the statements of the leadership of the Russian Federation regarding our state, interference in the internal affairs of Ukraine by denying its civilizational subjectivity and demanding the abandonment of its own path of development. With great gratitude and confidence in the victory, we turn to the defenders of Ukraine: we are together, we are convinced of the strength and steadfastness of those who defend Democracy, Freedom, and Human Values! Resistance is not just military resistance. The opposition of every citizen is not to succumb to provocations and panic, to prevent escalation of tensions, to refute fakes, to maintain clarity of thinking. A patriot is someone who invests in the development of the country and preserves its defense capabilities in a way accessible to him. For representatives of pedagogical and psychological sciences — is to maintain the national identity and unity of the nation at the level of consciousness of every citizen, territorial community, society. This is the strengthening of the subjectivity of every citizen through his awareness of Ukrainian history from the times of Kyivan Rus, Ukrainian mentality of freedom from the Cossack era, the spirit of Ukrainian democracy from the Constitution of Philip Orlyk, invincibility of the Ukrainian army from the victories of Peter Konashevych-Sahaidachnyi and Bohdan Khmelnytskyi, exercise of self-awareness by Hryhorii Skovoroda and Taras Shevchenko. Scientists of the National Academy of Educational Sciences of Ukraine, as always, are ready for a dialogue with anyone who finds himself in difficult life circumstances, in situations of confusion or uncertainty, who needs advice or psychological help. We all have hard work ahead of us every day. But our goal is common and high — to preserve the sovereignty and territorial integrity of Ukraine. To this end, we have worked for Ukraine′s independence, we have also worked for the development of our state for the last 30 years, for this, we are mobilizing for further struggle! We will win! Glory to Ukraine!