Relevant bibliographies by topics / Natural agents

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Natural agents'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Natural agents"

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Mitscher, Lester A., Hanumaiah Telikepalli, Eva McGhee, and Delbert M. Shankel. "Natural antimutagenic agents." Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis 350, no. 1 (February 1996): 143–52. http://dx.doi.org/10.1016/0027-5107(95)00099-2.

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Valery M. Dembitsky, Tatyana A. Gloriozova, and Vladimir V. Poroikov. "Natural Peroxy Anticancer Agents." Mini-Reviews in Medicinal Chemistry 7, no. 6 (June 1, 2007): 571–89. http://dx.doi.org/10.2174/138955707780859396.

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Mohamed, Gamal A., Sabrin R. M. Ibrahim, Ehab S. Elkhayat, and Riham Salah El Dine. "Natural anti-obesity agents." Bulletin of Faculty of Pharmacy, Cairo University 52, no. 2 (December 2014): 269–84. http://dx.doi.org/10.1016/j.bfopcu.2014.05.001.

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Fan, H., C. M. Starks, H. Hughey, G. R. Eldridge, and J. F. Hu. "Natural anti-HCV agents." Drugs of the Future 34, no. 3 (2009): 223. http://dx.doi.org/10.1358/dof.2009.034.03.1344809.

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Haridas, V., and Sarala Naik. "Natural macromolecular antifreeze agents to synthetic antifreeze agents." RSC Advances 3, no. 34 (2013): 14199. http://dx.doi.org/10.1039/c3ra00081h.

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Benko, Jakub, and Stanislava Vranková. "Natural Psychoplastogens As Antidepressant Agents." Molecules 25, no. 5 (March 5, 2020): 1172. http://dx.doi.org/10.3390/molecules25051172.

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Increasing prevalence and burden of major depressive disorder presents an unavoidable problem for psychiatry. Existing antidepressants exert their effect only after several weeks of continuous treatment. In addition, their serious side effects and ineffectiveness in one-third of patients call for urgent action. Recent advances have given rise to the concept of psychoplastogens. These compounds are capable of fast structural and functional rearrangement of neural networks by targeting mechanisms previously implicated in the development of depression. Furthermore, evidence shows that they exert a potent acute and long-term positive effects, reaching beyond the treatment of psychiatric diseases. Several of them are naturally occurring compounds, such as psilocybin, N,N-dimethyltryptamine, and 7,8-dihydroxyflavone. Their pharmacology and effects in animal and human studies were discussed in this article.
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Nagle, Advait, Wooyoung Hur, and Nathanael Gray. "Antimitotic Agents of Natural Origin." Current Drug Targets 7, no. 3 (March 1, 2006): 305–26. http://dx.doi.org/10.2174/138945006776054933.

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Maity, B., and S. Chattopadhyay. "Natural Antiulcerogenic Agents: An Overview." Current Bioactive Compounds 4, no. 4 (December 1, 2008): 225–44. http://dx.doi.org/10.2174/157340708786847889.

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Dall'Acqua, Stefano. "Natural Products As Antimitotic Agents." Current Topics in Medicinal Chemistry 14, no. 20 (December 12, 2014): 2272–85. http://dx.doi.org/10.2174/1568026614666141130095311.

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Franco, Carlos Manuel, and Beatriz I. Vázquez. "Natural Compounds as Antimicrobial Agents." Antibiotics 9, no. 5 (April 29, 2020): 217. http://dx.doi.org/10.3390/antibiotics9050217.

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During the first two decades of this century, conventional antimicrobial compounds have been found out to have more bacterial resistance. What has also been worrying is the rediscovery of the so-called “natural compounds”, which in turn have a good name among the average citizen because of the former’s plant or animal origin. However, they do not form a well-classified group of substances. This Special Issue consists of five reviews focusing on clinical bacteria applications in food and their specific effects upon virulent bacterial factors. You will also find a research on much needed, new antimicrobials sourced in extreme environments, and secondary metabolites of Burkholderia. This issue includes 12 original research papers which will provide you with an in-depth coverage of the protein extract activity, as well as the activity of other plant extracts, on fighting bacteria, fungi or diarrhea. Their use in broilers or laying eggs for production purposes has also been focused on in order to improve gut microbiota. Last but not least, we should not forget about honey and its effect; Allium sativum-fermented extracts, as well as other “natural” compounds, have been studied in their fight against biofilms. Furthermore, we have also examined the use of essential oils, which are currently used in edibles such as fresh sausages. The present work also deals with other applications such as natural compound derivatives as well as compound mixtures.
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Dissertations / Theses on the topic "Natural agents"

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Oldfield, Nigel Leigh. "Thiazole-containing natural and non-natural metal-complexing agents." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311763.

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Sugimoto, Kenichi. "Mechanisms of antifatigue agents used in natural rubber." Thesis, Aston University, 1995. http://publications.aston.ac.uk/9755/.

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A large number of compounds containing quinonoid or hindered phenol functions were examined for their roles as antifatigue agents. Among the evaluated quinones and phenols expected to have macroalkyl radical scavenging ability, BQ, TOC, TOC and GM showed relatively good performance for fatigue resistance (although their performance was slightly less effective than the commercial aromatic amine antioxidants, IPPD and 6PPD). The compounds which were shown to have higher reactivity with alkyl radicals (via calculated reactivity indices) showed better fatigue resistance. This fact supports the suggestion that strong alkyl radical scavengers should be also effective antifatigue agents. Evidence produced based on calculation of reactivity indices suggests that the quinones examined react with alkyl radicals on the meta position of the quinone rings producing phenoxyl radicals. The phenoxyl radicals are expected either to disproportionate, to recombine with a further alkyl radical, or to abstract a hydrogen from another alkyl radical producing an olefine. The regeneration of quinones and formation of the corresponding phenols is expected to occur during the antifatigue activity. The phenol antioxidant, HBA is expected to produce a quinonoid compound and this is also expected to function in a similar way to other quinones. Another phenol, GM, which is also known to scavenge alkyl radicals showed good antifatigue performance. Tocopherols had effective antifatigue activity and are expected to have different antifatigue mechanisms from that of other quinones, hence TOC was examined for its mechanisms during rubber fatiguing using HPLC analysis. Trimers of TOC which were produced during vulcanisation are suggested to contribute to the fatigue activity observed. The evidence suggests that the trimers reproduce TOC and a mechanism was proposed. Although antifatigue agents evaluated showed antifatigue activity, most of them had poor thermoxidative resistance, hence it was necessary to compensate for this by using a combination of antioxidants with the antifatigue agents.
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Pan, Ende. "Searching for Anticancer Agents and Antimalarial Agents from Madagascar." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77260.

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In our continuing search for biologically active natural products from Madagascar as part of an International Cooperative Biodiversity Group (ICBG) program, a total of four antiproliferative extracts were studied, leading to the isolation of twelve novel compounds with antiproliferative activity against the A2780 human ovarian cancer line, and one extract with antimalarial activities was studied, which led to the isolation of five new natural products with antimalarial activities against the Dd2 and HB3 malarial parasites. The plants and their metabolites are discussed in the following order: one new xanthone and two known guttiferones from Symphonia tanalensis Jum. & H. Perrier (Clusiaceae); four new diphenyl propanes and one new cyclohepta-dibenzofuran skeleton from Bussea sakalava (Fabaceae); four new cardiac glycosides from Leptadenia madagascariensis Decne. (Apocynaceae); two new and four known alkaloids from Ambavia gerrardii (Baill.) Le Thomas (Annonaceae); five new sesquiterpene lactones from Polycline proteiformis Humbert (Asteraceae). The structures of all compounds were determined by analysis of their mass spectrometric, 1D and 2D NMR, UV and IR spectroscopic and optical rotation data. Other than structure elucidation, this dissertation also involve bioactivity evaluation of all the isolates, synthesis of two interesting alkaloids, as well as a proposal for the possible biosynthetic pathway of the new cyclohepta-dibenzofuran skeleton.
Ph. D.
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Burgess, René G. "Realistic evaluation of terrain by intelligent natural agents (RETINA) /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03sep%5FBurgess.pdf.

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Thesis (M.S. in Modeling, Virtual Environments and Simulation)--Naval Postgraduate School, September 2003.
Thesis advisor(s): Chris Darken, John Hiles. Includes bibliographical references (p. 87-90). Also available online.
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Shah, Aashay Kirit. "Development of novel anticancer agents based on natural products." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/5993.

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My thesis includes the development of two novel anticancer agents based on natural products; OSW-1 analog (ZJ-201) and truncated Superstolide A analog (ZJ-102). OSW-1 is isolated from the bulbs of Ornithogalum saundersiae. It exhibits an extremely potent anticancer activity against a wide spectrum of cancer cells. Relatively, its anticancer activities are about 10-100 times more potent than many well-known anticancer drugs in clinical use. However, the promise of OSW-1 is dampened by its relatively weak in vivo anticancer activity. We hypothesize that the loss of two ester groups on OSW-1 in mouse causes a discrepancy in its in vivo efficacy. Therefore, replacing both ester groups in the disaccharide portion of OSW-1 with bioisosteric amides should significantly reduce the rate of metabolism and greatly improve its in vivo anticancer activity. This dissertation includes the synthesis of amide analog of OSW-1, ZJ-201. The synthetic route described in this thesis is characterized by its flexibility to synthesize multiple amino analogs of OSW-1. ZJ-201 will be evaluated for its in vitro cytotoxicity, metabolic stability and pharmacokinetic properties. The biological data obtained will enable us to get insights into the SAR of OSW-1 and assist in transforming OSW-1 into a clinically agent. Superstolide A is a highly potent anticancer agent isolated from marine sponge Neosiphonia superstes. In 2013, Jin’s lab reported the design and synthesis of truncated Superstolide A (ZJ-101) in 15 steps with a yield of 6.2%. In vitro cytotoxicity studies showed that ZJ-101 maintains and sometimes exceeds the potent anticancer activity of the parent natural product. As this is the first active analog of Superstolide A reported, there is a need to develop additional analogs of ZJ-101 to probe into the SAR of this anticancer agent. This dissertation includes the synthesis of aromatic analog of truncated Superstolide A, ZJ-102. In vitro cytotoxicity studies showed that ZJ-201 demonstrated poor antiproliferative properties in comparison to ZJ-101. Hence, we can conclude that the cyclohexene ring of ZJ-101 cannot be simplified to an aromatic core as it significantly affects anticancer activity.
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Hans, Renate Hazel. "Novel Antimalarial and Antitubercular Agents Based on Natural Products." Doctoral thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/6311.

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Malaria and tuberculosis are listed among the major infectious diseases. They are responsible for severe morbidity and mortality especially in resource-poor settings where control interventions are inaccessible, unaffordable and plagued by widespread resistance. According to current estimates, malaria afflicts over 40% of the worldâs population and claims the lives of 1-3 million annually. The epidemiology of tuberculosis is just as grim. About one third of the world population is reported to be infected with Mycobacterium tuberculosis and it is responsible for 2-3 million deaths annually. Of particular interest to this project, is the fact that natural products have always been on the frontline in the battle against these diseases, that is, most of the clinically used drugs in antimalarial and antitubercular chemotherapy are of natural product-origin. In this project we therefore focussed on the design, synthesis, characterization and biological evaluation of novel antimalarial and antitubercular agents obtained by synthetically hybridizing and decorating scaffolds based on natural products or derivatives - with a history in the aforementioned disease models. Scaffolds selected include the thiolactone ring system, a key intermediate of the natural product thiolactomycin, the non-peptidic natural product isatin and the chalcone scaffold. In this way a series of hybrids were constructed which can be subdivided into three main groups: (i) thiolactone-isatin hybrids, (ii) -amino alcohol thiolactone-chalcone and isatin-chalcone hybrids, and (iii) dihydroartemisinin-isatin, dihydroartemisinin-chalcones and other miscellaneous hybrids. These were evaluated for antiplasmodial activity against the chloroquine resistant (W2) and chloroquine sensitive (D10) strains of Plasmodium falciparum as well as for inhibitory activity against cysteine proteases. Evaluation of antimycobacterial activity of the synthesized compounds against the drug sensitive H37Rv strain of M. tuberculosis was also undertaken. (i) For the first group of hybrids we used the C-4 hydroxyl group of the thiolactone ring as a handle for functionalization by attaching it via a variable, non-hydrolyzable alkyl linker to the isatin scaffold. Most striking, is the operational simplicity of the synthesis methodology employed and how it led to the discovery of a novel tetracyclic ring system. Identified from the latter is the compound 3.8p which is the most active antimalarial from this series with an IC50 of 6.92 μM in the W2 strain. Some of the hybrids (3.7 and 3.8) were more active than the monomers and the parent drug thiolactomycin, thus demonstrating the potential of hybridization as a drug discovery tool. Antimalarial structure activity relationships for the novel tetracycles 3.8 revealed the importance of substitution at C-5 of the isatin scaffold and vi the need for increased lipophilicity. Although the antitubercular activity of the hybrids was inferior compared to the control drugs, a number of advanced intermediates were identified which displayed promising activity against both fast growing and slow-growing, persistent forms of M. tuberculosis. (ii) The second group of hybrids consisted of a 36-member library obtained by the covalent linkage of methoxylated chalcones with the thiolactone ring and the isatin scaffold. Incorporated in their design is the -amino alcohol moiety, a known bioactiphore. For the synthesis of these hybrids we employed the copper-catalyzed Huisgen 1,3-dipolar cycloaddition reaction (also know as âclickâ chemistry) which in addition to expediting structure activity relationship studies yielded the 1,2,3-triazole ring system. The antiplasmodial results showed that the thiolactone-chalcones, with IC50s ranging from 0.68 to 6.08 μM, were more active against the W2 strain than the isatin-chalcones (IC50 = 2.09 - 14.90 μM). More so, structure activity relationships delineated for the former indicated the preference for triOMe substitution on ring A of the chalcone scaffold. The most active compound for this series 4.14f [IC50 = 0.68 μM (W2)] is 10-fold less active than chloroquine but has a greater efficacy than the parent natural product thiolactomycin. Results obtained for cysteine protease activity showed that the isatin-chalcone hybrids inhibited falcipain-2 activity, whereas the thiolactone-chalcone hybrids were devoid of enzyme inhibitory activity. With regard to antitubercular activity, the advanced intermediates were more active than the hybrid constructs. The most promising antitubercular agent identified is the acetylenic chalcone 4.10f (MIC = 13.1 μM) which is 2-fold more active than one of the controls, moxifloxacin (MIC = 31.1 μM) against the slow-growing persistent forms of M. tuberculosis. (iii) The final group of compounds is a limited series of semi-synthetic artemisinin analogues obtained by hybridizing the first generation analogue, dihydroartemisinin with previously mentioned scaffolds (isatin, chalcones, thiolactone) and other biologically relevant scaffolds such as the 4-aminoquinoline unit and azidovudine (AZT). As with the previous series we utilized the âclickâ reaction to effect the synthesis of these hybrids. The most active compound identified is the intermediate 5.4 [IC50 = 6.13 nM (W2)] which is more active than the parent natural product artemisinin [IC50 = 10.84 nM (W2)], 16 times more active than chloroquine and 2-times less active than dihydroartemisinin. The lack of antitubercular activity of compounds in this series moreover confirmed the antimalarial specificity of artemisinin analogues.
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Burgess, Rene G. "Realistic evaluation of terrain by intelligent natural agents (RETINA)." Thesis, Monterey, California. Naval Postgraduate School, 2003. http://hdl.handle.net/10945/867.

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Approved for public release; distribution is unlimited
US Army and Joint constructive simulations require human operators to observe the exercise in progress, conduct analysis of the results, and provide a realistic reports and assessment of the action presented on their screens to the desired training audience. Current software tools provide excellent mathematical assessments (such as center of mass calculations, optimal routes, and sensor ranges) but poor human-like assessment of data (most likely route, probable enemy intention, etc.). This Thesis presents an artificial intelligence architecture specifically designed to reduce that manpower requirement by describing a concept for computer modeling that can produce realistic human-like assessment results. Specific concepts described are approaches for conducting a digital terrain assessment, development of avenues of approach, deployment of templated forces to a specific piece of terrain, and then a method of adjusting the templated force to react to actual sightings and known information. Also included are more detailed discussions and implementation details for use of gas diffusion as a method of analyzing avenues of approach through digital terrain. This approach seems quite promising as a method of modeling human movement tendencies and appears superior to classic path finding or optimal route selection methods.
Lieutenant Colonel, United States Army
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Kanyanda, Stonard Sofiel Elisa. "Screening of natural products and Alkylating agents for Antineoplastic Activity." Thesis, University of the Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6433_1363357514.

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Background and objectives: Apoptosis is a process in which a cell programmes its own death. It is a highly organized physiological mechanism in which injured or damaged cells are destroyed. Apart from physiological stimuli however, exogenous factors can induce apoptosis. Many anti-cancer drugs work by activating apoptosis in cancer cells. Natural substances have been found to have the ability to induce apoptosis in various tumour cells and these substances have been used as templates for the construction of 
novel lead compounds in anticancer treatment. On the other hand, alkylating agents such as cisplatin, cis- [PtCl2 (NH3) 2] have been widely used as antineoplastic agents for a 
wide variety of cancers including testicular, ovarian, neck and head cancers, amongst others. However, the use of cisplatin as an anticancer agent is limited due to toxicity and resistance problems. The aim of this present study was to screen the leaves of Rhus laevigata, a South African indigenous plant, for the presence of pro-apoptotic and 
anti-proliferative natural compounds and also to screen newly synthesised palladium based complexes (15 and 57) and a platinum based complex (58) for their antineoplastic 
activities tested against a panel of cell lines. Results. The results showed that crude methanol extracts from Rhus laevigata as well as the newly synthesised palladium based complexes (15 and 57) and a platinum based complex (58) induced apoptosis in the cell lines tested, as demonstrated by the externalization of phosphatidylserine, mitochondrial membrane permeabilization,caspase-3 activation, and DNA fragmentation. Caski (cervical cancer) and H157 (non small cell lung carcinoma) cell lines treated with the methanol extract from Rhus laevigata however, were more resistant to apoptosis induction. Among the metallocomplexes, complexes 15 and 57, palladium based complexes, were the most active. Conclusion: The methanol extract from the leaves of Rhus laevigata contain pro-apoptotic and antiproliferative natural compound(s), which need to be characterised and elucidated as they could provide the much-needed lead compounds in the fight against cancer. On the other hand the newly synthesized palladium complexes also need further evaluation to 
see if they can be used as anticancer agents that can overcome the problems associated with cisplatin.

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Pierce, Tyler. "Virtual Interactions with Real-Agents for Sustainable Natural Resource Management." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6002.

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Common pool resource management systems are complex to manage due to the absence of a clear understanding of the effects of users' behavioral characteristics. Non-cooperative decision making based on individual rationality (as opposed to group rationality) and a tendency to free ride due to lack of trust and information about other users' behavior creates externalities and can lead to tragedy of the commons without intervention by a regulator. Nevertheless, even regulatory institutions often fail to sustain natural common pool resources in the absence of clear understanding of the responses of multiple heterogeneous decision makers to different regulation schemes. While modeling can help with our understanding of complex coupled human-natural systems, past research has not been able to realistically simulate these systems for two major limitations: 1) lack of computational capacity and proper mathematical models for solving distributed systems with self-optimizing agents; and 2) lack of enough information about users' characteristics in common pool resource systems due to absence of reliable monitoring information. Recently, different studies have tried to address the first limitation by developing agent-based models, which can be appropriately handled with today's computational capacity. While these models are more realistic than the social planner's models which have been traditionally used in the field, they normally rely on different heuristics for characterizing users' behavior and incorporating heterogeneity. This work is a step-forward in addressing the second limitation, suggesting an efficient method for collecting information on diverse behavioral characteristics of real agents for incorporation in distributed agent-based models. Gaming in interactive virtual environments is suggested as a reliable method for understanding different variables that promote sustainable resource use through observation of decision making and behavior of the resource system beneficiaries under various institutional frameworks and policies. A review of educational or "serious" games for environmental management was undertaken to determine an appropriate game for collecting information on real-agents and also to investigate the state of environmental management games and their potential as an educational tool. A web-based groundwater sharing simulation game—Irrigania—was selected to analyze the behavior of real agents under different common pool resource management institutions. Participants included graduate and undergraduate students from the University of Central Florida and Lund University. Information was collected on participants' resource use, behavior and mindset under different institutional settings through observation and discussion with participants. Preliminary use of water resources gaming suggests communication, cooperation, information disclosure, trust, credibility and social learning between beneficiaries as factors promoting a shift towards sustainable resource use. Additionally, Irrigania was determined to be an effective tool for complementing traditional lecture-based teaching of complex concepts related to sustainable natural resource management. The different behavioral groups identified in the study can be used for improved simulation of multi-agent groundwater management systems.
M.S.
Masters
Civil, Environmental, and Construction Engineering
Engineering and Computer Science
Civil Engineering; Water Resources Engineering
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SAYAO, MIRIAM. "REQUIREMENTS VERIFICATION AND VALIDATION: NATURAL LANGUAGE PROCESSING AND SOFTWARE AGENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10927@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO GRANDE DO SUL
No processo de desenvolvimento do software, atividades relacionadas ao Processo de Requisitos envolvem elicitação, modelagem, verificação e validação dos requisitos. O uso da linguagem natural no registro dos requisitos facilita a comunicação entre os participantes do processo, além de possibilitar que clientes e usuários validem requisitos sem necessitar de conhecimento extra. Por outro lado, na economia globalizada atual, o desenvolvimento de software por equipes geograficamente distribuídas está se tornando uma norma. Nesse cenário, atividades de verificação e validação de requisitos para um software de média ou alta complexidade podem envolver o tratamento de centenas ou milhares de requisitos. Com essa ordem de complexidade é importante que o engenheiro de software tenha apoio computacional para o desempenho adequado das atividades de aferição de qualidade. Neste trabalho estamos propondo uma estratégia que combina técnicas de processamento da linguagem natural (PLN) e agentes de software para apoiar as atividades de análise dos requisitos. Geramos visões textuais ou gráficas de grupos de requisitos relacionados; visões apóiam a análise de completude, a identificação de duplicidades e de dependências entre requisitos. Utilizamos técnicas de análise de conteúdo para apoiar a identificação de omissões em requisitos não funcionais. Também propomos uma estratégia para a construção ou atualização do léxico da aplicação, utilizando técnicas de PLN. Utilizamos agentes de software para implementar serviços que incorporam as estratégias referidas, e também para atuar como representantes dos participantes do projeto em desenvolvimento.
In software development process, initial activities can involve requirements elicitation, modeling and analysis (verification and validation). The use of natural language in the register of the requirements facilitates the communication among stakeholders, besides offering possibilities to customers and users to validate requirements without extra knowledge. On the other hand, in the current global economy, software development for teams geographically distributed is becoming a rule. In this scenario, requirements verification and validation for medium or high complexity software can involve the treatment of hundreds or even thousand requirements. With this complexity order it is important to provide computational support for the software engineer execute quality activities. In this work we propose a strategy which combines natural language processing (NLP) techniques and software agents to support analysis activities. We have generated textual or graphical visions from groups of related requirements; visions help completeness analysis, identification of duplicities and dependences among requirements. We use content analysis techniques to support the identification of omissions in nonfunctional requirements. Also, we propose a strategy to construct the lexicon, using NLP techniques. We use software agents to implement web services that incorporate the related strategies, and also agents to act as personal assistants for stakeholders of the software project.
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Books on the topic "Natural agents"

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Mérillon, Jean-Michel, and Céline Riviere, eds. Natural Antimicrobial Agents. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-67045-4.

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Anticancer agents from natural products. 2nd ed. Boca Raton: CRC Press, 2012.

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Chu, Chung K., and Horace G. Cutler, eds. Natural Products as Antiviral Agents. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3414-3.

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Conference on Natural and Derived Pest Management Agents (1992 Snowbird, Utah). Natural and engineered pest management agents. Edited by Hedin Paul A. 1926-, Menn Julius J, Hollingworth Robert M. 1939-, and American Chemical Society. Division of Agrochemicals. Washington, DC: American Chemical Society, 1994.

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Leadbetter, Sara L. Natural antimicrobial agents: A literature survey. Leatherhead: Leatherhead Food R.A, 1991.

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Hedin, Paul A., Julius J. Menn, and Robert M. Hollingworth, eds. Natural and Engineered Pest Management Agents. Washington, DC: American Chemical Society, 1993. http://dx.doi.org/10.1021/bk-1994-0551.

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Sugimoto, Kenichi. Mechanisms of antifatigue agents used in natural rubber. Birmingham: Aston University. Department of Chemical Engineering and Applied Chemistry, 1995.

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Vassallo, Neville, ed. Natural Compounds as Therapeutic Agents for Amyloidogenic Diseases. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18365-7.

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L, Harris Stephen. Agents of chaos: Earthquakes, volcanoes, and other natural disasters. Missoula, Mont: Mountain Press Pub. Co., 1990.

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The detoxification and natural degradation of chemical warfare agents. London: Taylor & Francis, 1985.

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Book chapters on the topic "Natural agents"

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Gleizes, Marie-Pierre, Valérie Camps, Anthony Karageorgos, and Giovanna Di Marzo Serugendo. "Agents and Multi-Agent Systems." In Natural Computing Series, 105–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17348-6_5.

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Sen, Sandip, Sandip Debnath, and Manisha Mundhe. "Evolving Coordinated Agents." In Natural Computing Series, 559–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-18965-4_22.

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Bajpai, Vivek K., Shruti Shukla, and Ajay Sharma. "Essential Oils as Antimicrobial Agents." In Natural Products, 3975–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-22144-6_169.

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Becker, H. "Natural Agents and Extracts." In Pharmacology of Antihypertensive Therapeutics, 709–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-74209-5_19.

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Harnden, M. R., and D. N. Planterose. "Screening leads — natural products." In Approaches to Antiviral Agents, 153–80. London: Palgrave Macmillan UK, 1985. http://dx.doi.org/10.1007/978-1-349-06930-9_6.

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Maatman, R. M., Jonathan Gratch, and Stacy Marsella. "Natural Behavior of a Listening Agent." In Intelligent Virtual Agents, 25–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11550617_3.

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McCaskill, John S. "Microscopic Chemically Reactive Electronic Agents." In Natural Computing Series, 81–91. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-65826-1_6.

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Soic, Renato, and Marin Vukovic. "Natural Language Agents in a Smart Environment." In Agents and Multi-Agent Systems: Technologies and Applications 2020, 17–26. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5764-4_2.

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Kapoor, Leepica, and Siva Ramamoorthy. "Apocarotenoids: Natural Anti-Ageing Agents." In Biology, Chemistry, and Applications of Apocarotenoids, 73–87. First edition. | Boca Raton, FL : CRC Press, 2020.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429344206-5.

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Sinha, Shradha, and Sudha Jain. "Natural products as anticancer agents." In Progress in Drug Research / Fortschritte der Arzneimittelforschung / Progrès des recherches pharmaceutiques, 53–132. Basel: Birkhäuser Basel, 1994. http://dx.doi.org/10.1007/978-3-0348-7153-2_4.

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Conference papers on the topic "Natural agents"

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Long, Shun, Hui-Jin Wang, Xuan Chen, and Jian-Hua Cai. "Concurrent Negotiation among Capable Agents." In 2009 Fifth International Conference on Natural Computation. IEEE, 2009. http://dx.doi.org/10.1109/icnc.2009.51.

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Mészáros, Tamás, and Tadeusz Dobrowiecki. "Agent-based Reconfigurable Natural Language Interface to Robots - Human-Agent Interaction using Task-specific Controlled Natural Languages." In 9th International Conference on Agents and Artificial Intelligence. SCITEPRESS - Science and Technology Publications, 2017. http://dx.doi.org/10.5220/0006205306320639.

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Oates, Tim, Zachary Eyler-Walker, and Paul R. Cohen. "Toward natural language interfaces for robotic agents." In the fourth international conference. New York, New York, USA: ACM Press, 2000. http://dx.doi.org/10.1145/336595.337389.

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Buck, Joshua W., Saverio Perugini, and Tam V. Nguyen. "Natural Language, Mixed-initiative Personal Assistant Agents." In IMCOM '18: The 12th International Conference on Ubiquitous Information Management and Communication. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3164541.3164609.

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Bodirlau, Alexandra, Stefania Budulan, and Traian Rebedea. "Cross-Domain Training for Goal-Oriented Conversational Agents." In Recent Advances in Natural Language Processing. Incoma Ltd., Shoumen, Bulgaria, 2019. http://dx.doi.org/10.26615/978-954-452-056-4_017.

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Liu, Bo, Zhimin Zhao, Jie Zhang, and Ping Dong. "Consensus strategies of multiple agents system." In 2010 Sixth International Conference on Natural Computation (ICNC). IEEE, 2010. http://dx.doi.org/10.1109/icnc.2010.5583871.

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Long, Shun, Hui-Jin Wang, Jian-Hua Cai, and Chan-Juan Liu. "Enhancing Intelligent Agents with Information Retrieval Techniques." In 2008 Fourth International Conference on Natural Computation. IEEE, 2008. http://dx.doi.org/10.1109/icnc.2008.15.

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"A MOBILE INTELLIGENT SYNTHETIC CHARACTER WITH NATURAL BEHAVIOR GENERATION." In 2nd International Conference on Agents and Artificial Intelligence. SciTePress - Science and and Technology Publications, 2010. http://dx.doi.org/10.5220/0002723003150318.

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Saadi, Adel, Ramdane Maamri, and Zaidi Sahnoun. "A Natural inclusion of Motives inside BDI agents." In 2019 International Conference on Theoretical and Applicative Aspects of Computer Science (ICTAACS). IEEE, 2019. http://dx.doi.org/10.1109/ictaacs48474.2019.8988135.

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Busemann, Stephan, Thierry Declerck, Abdel Kader Diagne, Luca Dini, Judith Klein, and Sven Schmeier. "Natural language dialogue service for appointment scheduling agents." In the fifth conference. Morristown, NJ, USA: Association for Computational Linguistics, 1997. http://dx.doi.org/10.3115/974557.974563.

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Reports on the topic "Natural agents"

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Reilly, W. S., and Joseph Bates. Natural Negotiation for Believable Agents. Fort Belvoir, VA: Defense Technical Information Center, June 1995. http://dx.doi.org/10.21236/ada296376.

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Johnson, W. L. Natural Interaction With Pedagogical Agents in Virtual Environments. Fort Belvoir, VA: Defense Technical Information Center, November 2002. http://dx.doi.org/10.21236/ada409186.

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Yegin, Cengiz, Nirup Nagabandi, and Mustafa Akbulut. Thermo- and pH-responsive Supramolecular Gelling Agents for Enhanced Oil and Natural Gas Recovery from Tight Formations. Office of Scientific and Technical Information (OSTI), June 2019. http://dx.doi.org/10.2172/1527099.

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Bridges, Todd, Jeffrey King, Johnathan Simm, Michael Beck, Georganna Collins, Quirijn Lodder, and Ram Mohan. International Guidelines on Natural and Nature-Based Features for Flood Risk Management. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41946.

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To deliver infrastructure that sustain our communities, economy, and environment, we must innovate, modernize, and even revolutionize our approach to infrastructure development. Change takes courage, but as one starts down the path of innovation, what was once novel becomes more familiar, more established. The U.S. Army Corps of Engineers (USACE) is walking this path with our partners through the Engineering With Nature (EWN) Initiative, integrating human engineering with natural systems. The International Guidelines on Natural and Nature-Based Features for Flood Risk Management are the next step toward revolutionary infrastructure development—a set of real-world guidelines to help familiarize us with what was once novel. USACE and collaborators around the world have been building, learning, and documenting the best practices for constructing Natural and Nature-Based Features (NNBF) for decades. The consolidation of these lessons into a single guidance document gives decision-makers and practitioners a much-needed resource to pursue, consider, and apply NNBF for flood risk management while expanding value through infrastructure. Relationships and partnerships are vital ingredients for innovation and progress. The NNBF Guidelines was achieved because of the strong relationships in the nature-based engineering community. The magnitude and diversity of contributors to the NNBF Guidelines have resulted in a robust resource that provides value beyond a single agency, sector, or nation. Similarly, the work of incorporating NNBF into projects will require us to strengthen our relationships across organizations, mandates, and missions to achieve resilient communities. I hope you are inspired by the collaborative achievement of the NNBF Guidelines and will draw from this resource to develop innovative solutions to current and future flood risk management challenges. There is a lot we can achieve together along the path of revolutionary infrastructure development.
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Hirschman, Lynette. Integrating Syntax, Semantics, and Discourse DARPA (Defense Advanced Research Projects Agency) Natural Language Understanding Program. Fort Belvoir, VA: Defense Technical Information Center, August 1988. http://dx.doi.org/10.21236/ada200485.

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Hirschman, Lynette. Integrating Syntax, Semantics,and Discourse DARPA (Defense Advanced Research Projects Agency) Natural Language Understanding Program. Fort Belvoir, VA: Defense Technical Information Center, March 1989. http://dx.doi.org/10.21236/ada206803.

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Hirschman, Lynette. Integrating Syntax, Semantics, and Discourse DARPA (Defense Advanced Research Projects Agency) Natural Language Understanding Program. Fort Belvoir, VA: Defense Technical Information Center, November 1987. http://dx.doi.org/10.21236/ada194098.

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Hirschman, Lynette. Integrating Syntax, Semantics, and Discourse DARPA (Defense Advanced Research Projects Agency) Natural Language Understanding Program. Fort Belvoir, VA: Defense Technical Information Center, February 1988. http://dx.doi.org/10.21236/ada194099.

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Angulo Rodríguez, Emilio, and Ariel Yépez-García. The Role of Natural Gas in Energy Transition. Inter-American Development Bank, November 2020. http://dx.doi.org/10.18235/0002868.

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As of 2004 and continuously to this day, the annual growth rate of renewable sources has been greater than that of all fossil fuels combined. In the midst of this transition to cleaner energy, natural gas is the only fossil fuel that has increased its share in the global energy matrix. Technological changes in the LNG supply chain, as well as transformations in the global natural gas market, largely explain this growth. This publication provides evidence on the fundamental role that natural gas plays in the energy transition, given that: (i) its greenhouse gas emissions are substantially lower than those of oil and coal; (ii) it provides the firm power necessary to complement intermittent renewable energies; (iii) it is particularly safe compared to other fossil fuels. In line with these attributes, the International Energy Agency projects that the share of natural gas in the global energy matrix by 2040 will remain stable (around 24%), even in its Sustainable Development Scenario, which would allow to meet the goals established in the Paris Agreement.
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Chandler, K. Ten Years of Compressed Natural Gas (CNG) Operations at SunLine Transit Agency: April 2003--December 2004. Office of Scientific and Technical Information (OSTI), January 2006. http://dx.doi.org/10.2172/876662.

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