Relevant bibliographies by topics / SMDW

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  1. Journal articles
  2. Dissertations / Theses
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  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'SMDW'

Author: Grafiati
Published: 10 January 2023
Last updated: 28 January 2023

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Journal articles on the topic "SMDW"

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Lord, Jackson, Ashley Thomas, Neil Treat, Matthew Forkin, Robert Bain, Pierre Dulac, Cyrus H. Behroozi, et al. "Global potential for harvesting drinking water from air using solar energy." Nature 598, no. 7882 (October 27, 2021): 611–17. http://dx.doi.org/10.1038/s41586-021-03900-w.

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AbstractAccess to safely managed drinking water (SMDW) remains a global challenge, and affects 2.2 billion people1,2. Solar-driven atmospheric water harvesting (AWH) devices with continuous cycling may accelerate progress by enabling decentralized extraction of water from air3–6, but low specific yields (SY) and low daytime relative humidity (RH) have raised questions about their performance (in litres of water output per day)7–11. However, to our knowledge, no analysis has mapped the global potential of AWH12 despite favourable conditions in tropical regions, where two-thirds of people without SMDW live2. Here we show that AWH could provide SMDW for a billion people. Our assessment—using Google Earth Engine13—introduces a hypothetical 1-metre-square device with a SY profile of 0.2 to 2.5 litres per kilowatt-hour (0.1 to 1.25 litres per kilowatt-hour for a 2-metre-square device) at 30% to 90% RH, respectively. Such a device could meet a target average daily drinking water requirement of 5 litres per day per person14. We plot the impact potential of existing devices and new sorbent classes, which suggests that these targets could be met with continued technological development, and well within thermodynamic limits. Indeed, these performance targets have been achieved experimentally in demonstrations of sorbent materials15–17. Our tools can inform design trade-offs for atmospheric water harvesting devices that maximize global impact, alongside ongoing efforts to meet Sustainable Development Goals (SDGs) with existing technologies.
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Friesen, Westley J., Sergey Paushkin, Anastasia Wyce, Severine Massenet, G. Scott Pesiridis, Gregory Van Duyne, Juri Rappsilber, Matthias Mann, and Gideon Dreyfuss. "The Methylosome, a 20S Complex Containing JBP1 and pICln, Produces Dimethylarginine-Modified Sm Proteins." Molecular and Cellular Biology 21, no. 24 (December 15, 2001): 8289–300. http://dx.doi.org/10.1128/mcb.21.24.8289-8300.2001.

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ABSTRACT snRNPs, integral components of the pre-mRNA splicing machinery, consist of seven Sm proteins which assemble in the cytoplasm as a ring structure on the snRNAs U1, U2, U4, and U5. The survival motor neuron (SMN) protein, the spinal muscular atrophy disease gene product, is crucial for snRNP core particle assembly in vivo. SMN binds preferentially and directly to the symmetrical dimethylarginine (sDMA)-modified arginine- and glycine-rich (RG-rich) domains of SmD1 and SmD3. We found that the unmodified, but not the sDMA-modified, RG domains of SmD1 and SmD3 associate with a 20S methyltransferase complex, termed the methylosome, that contains the methyltransferase JBP1 and a JBP1-interacting protein, pICln. JBP1 binds SmD1 and SmD3 via their RG domains, while pICln binds the Sm domains. JBP1 produces sDMAs in the RG domain-containing Sm proteins. We further demonstrate the existence of a 6S complex that contains pICln, SmD1, and SmD3 but not JBP1. SmD3 from the methylosome, but not that from the 6S complex, can be transferred to the SMN complex in vitro. Together with previous results, these data indicate that methylation of Sm proteins by the methylosome directs Sm proteins to the SMN complex for assembly into snRNP core particles and suggest that the methylosome can regulate snRNP assembly.
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Matsuo, Taira, Jing Chen, Yusuke Minato, Wakano Ogawa, Tohru Mizushima, Teruo Kuroda, and Tomofusa Tsuchiya. "SmdAB, a Heterodimeric ABC-Type Multidrug Efflux Pump, in Serratia marcescens." Journal of Bacteriology 190, no. 2 (November 16, 2007): 648–54. http://dx.doi.org/10.1128/jb.01513-07.

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ABSTRACT We cloned genes, designated smdAB, that encode a multidrug efflux pump from the chromosomal DNA of clinically isolated Serratia marcescens NUSM8906. For cells of the drug-hypersensitive strain Escherichia coli KAM32 harboring a recombinant plasmid carrying smdAB, structurally unrelated antimicrobial agents such as norfloxacin, tetracycline, 4′,6-diamidino-2-phenylindole (DAPI), and Hoechst 33342 showed elevated MICs. The deduced amino acid sequences of both SmdA and SmdB exhibited similarities to the sequences of ATP-binding cassette (ABC)-type multidrug efflux pumps. The efflux of DAPI and Hoechst 33342 from E. coli cells expressing SmdAB was observed, and the efflux activities were inhibited by sodium o-vanadate, which is a well-known ATPase inhibitor. The introduction of smdA or smdB alone into E. coli KAM32 did not elevate the MIC of DAPI; thus, both SmdA and SmdB were required for function. These results indicate that SmdAB is probably a heterodimeric multidrug efflux pump of the ABC family in S. marcescens.
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Roy, J., B. Zheng, B. C. Rymond, and J. L. Woolford. "Structurally related but functionally distinct yeast Sm D core small nuclear ribonucleoprotein particle proteins." Molecular and Cellular Biology 15, no. 1 (January 1995): 445–55. http://dx.doi.org/10.1128/mcb.15.1.445.

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Spliceosome assembly during pre-mRNA splicing requires the correct positioning of the U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) on the precursor mRNA. The structure and integrity of these snRNPs are maintained in part by the association of the snRNAs with core snRNP (Sm) proteins. The Sm proteins also play a pivotal role in metazoan snRNP biogenesis. We have characterized a Saccharomyces cerevisiae gene, SMD3, that encodes the core snRNP protein Smd3. The Smd3 protein is required for pre-mRNA splicing in vivo. Depletion of this protein from yeast cells affects the levels of U snRNAs and their cap modification, indicating that Smd3 is required for snRNP biogenesis. Smd3 is structurally and functionally distinct from the previously described yeast core polypeptide Smd1. Although Smd3 and Smd1 are both associated with the spliceosomal snRNPs, overexpression of one cannot compensate for the loss of the other. Thus, these two proteins have distinct functions. A pool of Smd3 exists in the yeast cytoplasm. This is consistent with the possibility that snRNP assembly in S. cerevisiae, as in metazoans, is initiated in the cytoplasm from a pool of RNA-free core snRNP protein complexes.
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Cuijpers, P., E. Weitz, I. A. Cristea, and J. Twisk. "Pre-post effect sizes should be avoided in meta-analyses." Epidemiology and Psychiatric Sciences 26, no. 4 (October 28, 2016): 364–68. http://dx.doi.org/10.1017/s2045796016000809.

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AimsThe standardised mean difference (SMD) is one of the most used effect sizes to indicate the effects of treatments. It indicates the difference between a treatment and comparison group after treatment has ended, in terms of standard deviations. Some meta-analyses, including several highly cited and influential ones, use the pre-post SMD, indicating the difference between baseline and post-test within one (treatment group).MethodsIn this paper, we argue that these pre-post SMDs should be avoided in meta-analyses and we describe the arguments why pre-post SMDs can result in biased outcomes.ResultsOne important reason why pre-post SMDs should be avoided is that the scores on baseline and post-test are not independent of each other. The value for the correlation should be used in the calculation of the SMD, while this value is typically not known. We used data from an ‘individual patient data’ meta-analysis of trials comparing cognitive behaviour therapy and anti-depressive medication, to show that this problem can lead to considerable errors in the estimation of the SMDs. Another even more important reason why pre-post SMDs should be avoided in meta-analyses is that they are influenced by natural processes and characteristics of the patients and settings, and these cannot be discerned from the effects of the intervention. Between-group SMDs are much better because they control for such variables and these variables only affect the between group SMD when they are related to the effects of the intervention.ConclusionsWe conclude that pre-post SMDs should be avoided in meta-analyses as using them probably results in biased outcomes.
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Morioka, Sandra Naomi, Diego Rodrigues Iritani, Aldo Roberto Ometto, and Marly Monteiro de Carvalho. "Revisão sistemática da literatura sobre medição de desempenho de sustentabilidade corporativa: uma discussão sobre contribuições e lacunas." Gestão & Produção 25, no. 2 (June 2018): 284–303. http://dx.doi.org/10.1590/0104-530x2720-18.

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Resumo O presente estudo discute a incorporação do conceito de sustentabilidade corporativa à literatura de sistemas de mensuração de desempenho (SMD), resultando na investigação de publicações sobre SMD de sustentabilidade (SMDS). Este estudo apresenta uma visão geral da literatura sobre SMDS, sintetizando as principais contribuições e apontando as principais tendências e lacunas nessa área de conhecimento. O método de pesquisa baseou-se em uma revisão sistemática da literatura, combinando bibliometria e análise de conteúdo. A amostra é composta por 406 artigos científicos. Essa amostra foi analisada quantitativamente, com apoio de estatística descritiva, redes de cocitação e palavras-chave. O estudo mostra que o número de publicações sobre o tópico pesquisado tem crescido nos últimos anos, mas ainda permanece disperso, com baixa conexão entre “tribos”. O estudo apresenta também que, apesar de ser relativamente consolidada, a literatura sobre SMD ainda não foi utilizada em sua totalidade para abordar os desafios dos SMDS. Um dos resultados da pesquisa mostra que a literatura de SMDS pode ser dividida em três categorias, de acordo com o seu foco principal: (1) os indicadores de sustentabilidade em si e sua aplicação na tomada de decisão; (2) o conjunto de indicadores como sistema; e (3) o contexto organizacional do SMDS. Analisando essas categorias, verifica-se que há poucas evidências sobre as consequências da implantação de SMD, bem como que a literatura ainda não é clara sobre como gestores devem considerar contingências dos SMDS tais como setor, tamanho da empresa, tipo de produto ou modelo de negócio.
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Caldwell, Aaron, and Andrew D. Vigotsky. "A case against default effect sizes in sport and exercise science." PeerJ 8 (November 3, 2020): e10314. http://dx.doi.org/10.7717/peerj.10314.

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Recent discussions in the sport and exercise science community have focused on the appropriate use and reporting of effect sizes. Sport and exercise scientists often analyze repeated-measures data, from which mean differences are reported. To aid the interpretation of these data, standardized mean differences (SMD) are commonly reported as a description of effect size. In this manuscript, we hope to alleviate some confusion. First, we provide a philosophical framework for conceptualizing SMDs; that is, by dichotomizing them into two groups: magnitude-based and signal-to-noise SMDs. Second, we describe the statistical properties of SMDs and their implications. Finally, we provide high-level recommendations for how sport and exercise scientists can thoughtfully report raw effect sizes, SMDs, or other effect sizes for their own studies. This conceptual framework provides sport and exercise scientists with the background necessary to make and justify their choice of an SMD.
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Lee, Yun Mi, Eunjung Son, and Dong-Seon Kim. "Comparative Study of Anti-Gouty Arthritis Effects of Sam-Myo-Whan according to Extraction Solvents." Plants 10, no. 2 (February 1, 2021): 278. http://dx.doi.org/10.3390/plants10020278.

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Sam-Myo-Whan (SMW) has been used in Korean and Chinese traditional medicine to help treat gout, by reducing swelling and inflammation and relieving pain. This study compared the effects of SMW extracted by using different solvents, water (SMWW) and 30% EtOH (SMWE), in the treatment of gouty arthritis. To this end, we analyzed the main components of SMWW and SMWE, using high-performance liquid chromatography (HPLC). Anti-hyperuricemic activity was evaluated by measuring serum uric acid levels in hyperuricemic rats. The effects of SMWW and SMWE on swelling, pain, and inflammation in gouty arthritis were investigated by measuring affected limb swelling and weight-bearing, as well as by enzyme-linked immunosorbent assays, to assess the levels of proinflammatory cytokines and myeloperoxidase (MPO). In potassium oxonate (PO)-induced hyperuricemic rats, SMWW and SMWE both significantly decreased serum uric acid to similar levels. In monosodium urate (MSU)-induced gouty arthritis mice, SMWE more efficiently decreased paw swelling and attenuated joint pain compare to SMWW. Moreover, SMWE and SMWW suppressed the level of inflammation by downregulating proinflammatory cytokines (interleukin-1β, tumor necrosis factor-α, and interleukin-6) and MPO activity. HPLC analysis further revealed that berberine represented one of the major active ingredients demonstrating the greatest change in concentration between SMWW and SMWE. Our data demonstrate that SMWE retains a more effective therapeutic concentration compared to SMWW, in a mouse model of gouty arthritis.
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Yi, Hongfei, Li Mu, Congcong Shen, Xi Kong, Yingzhi Wang, Yan Hou, and Rundong Zhang. "Negative cooperativity between Gemin2 and RNA provides insights into RNA selection and the SMN complex's release in snRNP assembly." Nucleic Acids Research 48, no. 2 (December 4, 2019): 895–911. http://dx.doi.org/10.1093/nar/gkz1135.

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Abstract The assembly of snRNP cores, in which seven Sm proteins, D1/D2/F/E/G/D3/B, form a ring around the nonameric Sm site of snRNAs, is the early step of spliceosome formation and essential to eukaryotes. It is mediated by the PMRT5 and SMN complexes sequentially in vivo. SMN deficiency causes neurodegenerative disease spinal muscular atrophy (SMA). How the SMN complex assembles snRNP cores is largely unknown, especially how the SMN complex achieves high RNA assembly specificity and how it is released. Here we show, using crystallographic and biochemical approaches, that Gemin2 of the SMN complex enhances RNA specificity of SmD1/D2/F/E/G via a negative cooperativity between Gemin2 and RNA in binding SmD1/D2/F/E/G. Gemin2, independent of its N-tail, constrains the horseshoe-shaped SmD1/D2/F/E/G from outside in a physiologically relevant, narrow state, enabling high RNA specificity. Moreover, the assembly of RNAs inside widens SmD1/D2/F/E/G, causes the release of Gemin2/SMN allosterically and allows SmD3/B to join. The assembly of SmD3/B further facilitates the release of Gemin2/SMN. This is the first to show negative cooperativity in snRNP assembly, which provides insights into RNA selection and the SMN complex's release. These findings reveal a basic mechanism of snRNP core assembly and facilitate pathogenesis studies of SMA.
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El-Badrawy, Sahar. "Königsgeleit (Smsw) الموکب الملکى (Smsw)." Conference Book of the General Union of Arab Archeologists 20, no. 20 (December 1, 2017): 60–115. http://dx.doi.org/10.21608/cguaa.2017.29860.

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Dissertations / Theses on the topic "SMDW"

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Jeon, Jin. "Surface micro-discharge (SMD)." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-178734.

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There is an urgent need for an efficient technology of disinfection and sterilization in view of the alarming dimensions health care-associated infections (HAIs) have reached. Cold atmospheric pressure plasma (CAP) can be utilized for hygienic and medical purposes, in particular in surface decontamination applications, and provides a promising alternative to the conventionally used sterilization techniques. Surface Micro-Discharge (SMD) offers a technology for generating CAP that can be applied to wide areas. In the present work, I investigate the plasma chemistry involved in the inactivation of microorganisms by application of the SMD in order to optimize the antimicrobial effect. For this purpose, different strains of vegetative bacteria and bacterial endospores are exposed to the SMD with experimental parameters such as the gas composition, power input, treatment duration and humidity varied. At the same time, the concentration of ozone produced by the SMD is monitored, and its correlation with the antimicrobial efficacy is investigated. I demonstrate that the bactericidal effect of the SMD on both the Gram-negative Escherichia coli and Gram-positive Enterococcus mundtii is similar and strongly correlates with the ozone concentration. The sporicidal effect on Geobacillus stearothermophilus is crucially affected by the humidity, whereas the ozone concentration appears to have no influence. In addition, I investigate the dynamic behavior of ozone produced by the SMD by varying the geometry and the time interval for the plasma generation and by igniting the plasma in two subsequent phases with different frequencies. Possible explanations for the obtained results are provided. This work fortifies the role of SMD as an efficient sterilization method and discloses diverse possibilities for optimizing the antimicrobial effect.
Die Häufigkeit der Krankenhausinfektionen und ihre Auswirkung haben alarmierende Ausmaße angenommen. Angesichts dessen besteht ein akuter Bedarf an einer effizienten Technologie für Desinfektion und Sterilisation. Die Anwendung von kaltem atmosphärischen Plasma (englisch: cold atmospheric plasma, CAP) für die Hygiene und Medizin, insbesondere für die Oberflächendekon-tamination, stellt einen Versuch dar, eine schnelle und effektive Sterilisationstechnik zu schaffen. Die Oberflächenentladung (englisch: Surface Micro-Discharge, SMD) bietet eine Technologie für die Erzeugung und Anwendung von CAP. In der vorliegenden Arbeit analysiere ich die antimikrobiellen Eigenschaften der SMD, um die Inaktivierungsmechnismen besser zu verstehen und den antimikrobiellen Effekt zu optimieren. Hierzu werden unterschiedliche Stämme von vegetativen Bakterien und bakteriellen Endosporen unter unterschiedlichen Bedingungen, inklusive der Gaszusammensetzung, der Eingangsleistung, der Behandlungsdauer und der Luftfeuchtigkeit, dem SMD-Plasma ausgesetzt. Gleichzeitig wird die Konzentration des im SMD-Plasma erzeugten Ozons gemessen, um den Zusammenhang mit dem antimikrobiellen Effekt zu untersuchen. Ich zeige in der vorliegenden Arbeit, dass eine SMD-Behandlung auf die gramnegative Escherichia coli und den grampositiven Enterococcus mundtii eine ähnliche Wirkung erzielt. Zudem hängt die bakterizide Wirkung der SMD stark von der Ozonkonzentration ab. Die Luftfeuchtigkeit spielt eine erhebliche Rolle bei der sporiziden Wirkung der SMD auf Geobacillus stearothermophilus, wobei hier die Ozonkonzentration keine Rolle zu spielen scheint. Darüber hinaus untersuche ich die Dynamik der Konzentration des im SMD-Plasma erzeugten Ozons, indem die Geometrie und das Zeitintervall für die Erzeugung der Entladung variiert werden, und indem die Entladung in zwei aufeinander folgenden Phasen mit verschiedenen Frequenzen gezündet wird. Mögliche Erklärungen für die beobachteten Ergebnisse werden vorgeschlagen. Die vorliegende Arbeit untermauert die Rolle der SMD als eine effiziente Sterilisationstechnik und offenbart unterschiedliche Möglichkeiten für die Optimierung des antimikrobiellen Effekts der SMD. Jedoch konnte im Rahmen dieser Arbeit nicht für alle Beobachtungen eine zufriedenstellende Erklärung geliefert werden. Weiterführende Forschungsarbeiten werden daher nahegelegt.
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Strapko, Jaroslav. "Měření teplotních profilů SMD pouzder." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218369.

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Diploma thesis mainly deals with temperature management and calculation of temperature profile in oven by using SMD packages (PLCC, 1206) of different thermal capacitance on testing PCB. Above all shows theoretical consecution of temperature profile calculation in oven by using known mathematical method like the lumped capacitance method or finite difference method. Theoretical solution and measured values are compared. Diploma thesis also deals with fixation methods of thermocouples K type on assembly, comparison methods based on known and subexperiment, determines the deficiencies of methods. This thesis can perform as theoretical as well as experimental resource to prediction of temperature profiles of PCB´s with different assembly density.
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Carvalho, José Elidelson da Costa. "Uso de algoritmos meméticos na otimização de sequências de montagem de máquinas SMD." Universidade Federal do Amazonas, 2007. http://tede.ufam.edu.br/handle/tede/3305.

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Made available in DSpace on 2015-04-22T22:00:55Z (GMT). No. of bitstreams: 1 Jose Elidelson Carvalho.pdf: 703131 bytes, checksum: e19421085c622156430085868340687b (MD5) Previous issue date: 2007-12-28
SUFRAMA - Superintendência da Zona Franca de Manaus
The optimization of SMD electronics components assembly in printed circuit boards has been target of intensive research for it is one of the important point in production lines efficiency of the electronic industry. Among many techniques utilized for solving this kind of problem are the Genetics Algorithms also called Evolutionary Algorithms due it analogy with natural biologic evolution. Another kind of Evolutionary Algorithms called Memetics Algorithm has presented better results than Genetics Algorithms in many application fields. So this work proposes an investigation about using this algorithm for solving the SMD sequence placement problem. Many tests were done using Genetic and Memetics Algorithms on different placement sequence sets and the results showed a better performance of Memetic Algorithms related to Genetic Algorithms. So Memetics Algorithms has been showed to be an important tool on solving the problem of SMD placement sequence.
A otimização da seqüência de montagem de componentes SMD em placas de circuito impresso tem sido alvo de intensa pesquisa por ser um dos pontos fundamentais para a eficiência de linhas de produção de placas em indústrias de produtos eletrônicos. Entre as diversas técnicas utilizadas para resolver este tipo de problema estão os Algoritmos Genéticos chamados também de evolucionários por sua analogia com a evolução biológica natural das espécies. Outro tipo de algoritmo evolucionário chamado de Algoritmo Memético tem apresentado melhores resultados que os Algoritmos Genéticos em diversas áreas de pesquisa. Portanto este trabalho propõe uma investigação do uso deste algoritmo na resolução do problema da otimização da seqüência de montagem de componentes SMD. Foram feitos diversos testes usando Algoritmos Genéticos e Meméticos em diferentes seqüências de montagem e os resultados mostraram um melhor desempenho dos Algoritmos Meméticos em relação aos Genéticos. Portanto os Algoritmos Meméticos se mostraram uma promissora ferramenta para a otimização deste problema.
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Hoffman, Anton, and Mikael Johansson. "Framtagning av universell fixtur för SMD-lina." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-49415.

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Det här projektet har utförts i samarbete med företaget Eskilstuna Elektronikpartner AB (EEPAB). Företaget arbetar med tillverkning av kretskort där de använder sig av ytmontering och hålmontering. Vissa mönsterkort kan vara böjda och kan därmed orsaka problem i Surface Mount Device (SMD)-linan. Syftet med projektet var att ta fram en fixtur som gör mönsterkorten planare vilket innebär att minska höjdskillnaden mellan högsta och lägsta punkten på korten. Detta för att effektivisera och förhindra stopp i produktionen. Två forskningsfrågor togs fram som fungerade som ett stöd under projektets gång: F1:Hur förbättras produktionen i en SMD-lina när mönsterkorten hålls plana? F2:Vilka faktorer bör beaktas när en fixtur tas fram för en SMD-lina? Projektet har följt en produktutvecklingsprocess där fokuset har legat på konceptstadiet. Data har samlats in genomen litteraturstudie, intervjuer samt ett formulär. Projektet resulterade i ett slutgiltigt koncept i form av en fixtur. Resultatet i projektet visar att genom att spänna fast mönsterkortets kortsidor så minskas nedböjningen. Genom planare mönsterkort minskas risken för fel mängdapplicering av lödpasta som i sin tur kan orsaka kortslutning eller en öppen slutning. Att problemen med fel mängd lödpasta minskas leder även till att manuellt arbete som tvättning och applicering av lödpasta kan reduceras. När lödpasta appliceras för hand är det även svårt att veta om rätt mängd har applicerats, detta kan även leda till problem under lödningen. Sedan kan det konstateras att designen av fixturen måste samspela med alla maskiner i SMD-linan för att inte orsaka problem eller hindra maskinerna från att utföra dess arbete. Utifrån ett koncepttest visade det sig att det framtagna konceptet gör mönsterkorten cirka 42% planare. Detta bör kunna minska problemen i SMD-linan och spara in tiden det tar att åtgärda dessa problem. Koncepttestet utfördes inte i den rätta maskinen och måste därmed undersökas ordentligt. Det var endast ett sorts mönsterkort som testades, dessa faktorer är exempel på felkällor. I framtiden bör ett flertal olika mönsterkort testas för att få en högre reliabilitet. Det behövs även tas fram en exakt tolerans för när mönsterkorten är för böjda och problem uppstår. I dagsläget finns endast maskinens egentolerans som inte stämmer särskilt bra och en generell tolerans för SMD-linor.
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Juračka, Martin. "Možnosti pájení SMD součástek pomocí zařízení Fritsch." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221008.

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This thesis focuses on soldering technology in microelectronics. It describes in detail the basic ways of soldering and repairs in electronics. This piece of work shows the principles of technological equipment for bulk soldering and used repairing devices. In the theoretical part of this work there are also briefly described the packages for integrated circuits that were used in the practical part of the thesis. The practical part of the thesis deals with setting of the heat profiles for hot air repair station Fritsch Mikroplacer for LQFP64, SOIC16, TSSOP14, QFN16 and DSBGA5 packages. The heat profiles for assembly and disassembly of the particular types of the packages on designed and manufactured test printed circuit board were set and tested. The resulting heat profiles are compared with the recommended heat profile of an ordinary solder paste SnAg3Cu0,5 which was used for the test. This thesis can serve as an aid for the further settings of heat profiles in other types of packages not only on Fritsch Mikroplacer devices, but also on other repairing devices of this type.
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Raza, Avalos Giacomo Brando. "Comparación de los procesos Smaw y Gtaw/Smaw en soldadura de tuberías con material api 5l x52 para una presión de diseño de 19 bares." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/19717.

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El siguiente trabajo toma como premisa la necesidad de contar con juntas soldadas de calidad para la unión de tuberías que transportan gas natural. La importancia de este trabajo va relacionado a la necesidad de masificar el uso de este hidrocarburo como fuente principal de energía para la población. Se realiza la comparación entre los procedimientos SMAW y mixto GTAW/SMAW para una tubería API 5L X52M de 152 mm. de diámetro y 7.11 mm. de espesor. Estas son dimensiones requeridas para obtener la presión de diseño de 19 bares. El estudio realizado consta de cuatro capítulos. El primer capítulo abarca las teorías fundamentales para la elaboración de este, entre ellos resalta la Norma API 1104, la cual ha sido fundamental para establecer los criterios de aceptación a los dos procedimientos comparados. El segundo capítulo abarca la metodología realizada para poder obtener el WPS preliminar de ambos procedimientos. Se justifica la selección de los electrodos de aportes, corriente, temperatura de precalentamiento, entre otras variables esenciales más. Todo lo anterior considerando las mejores prácticas, recomendaciones de fabricantes y la Norma API 1104. El tercer capítulo toca en mayor profundidad los requisitos establecidos para calificar los procedimientos de soldadura. Se identifica el número de probetas y ensayos a realizar a cada uno de estos. Asimismo, se procede con la soldadura de los cupones el corte de probetas para someterlos a los ensayos requeridos. Finalmente, en el cuarto capítulo se analiza los resultados obtenidos del ensayo y se concluye si las discontinuidades son aceptables o no. Asimismo, se realiza el cálculo y comparación de costos asociados para obtener una junta soldada.
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Kang, Daein. "Development of an arc voltage control mechanism for underwater wet smaw process." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1298565838.

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Gaal, Brian. "Development of a Coating Formulation Procedure for Ni-base Shielded Metal Arc Electrodes with Varying Core Wire Composition." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354481846.

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Lima, Júnior Diniz Ramos de. "Caracterização microestrutural e mecânica de juntas soldadas utilizando os processos GTAW, FCAW e SMAW." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/13258.

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LIMA JÚNIOR, Diniz Ramos de. Caracterização microestrutural e mecânica de juntas soldadas utilizando os processos GTAW, FCAW e SMAW. Recife, 2013. 81 f. Dissertação (mestrado) - UFPE, Centro de Tecnologia e Geociências , Programa de Pós-graduação em Engenharia Mecânica, 2013..
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Rose, Malcom Riley. "Assessing the Importance of Sequencing Laboratory Welding Practicums." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1944.

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The effects of mastering 1F (flat position-fillet) welds on carbon steel using a sequenced pattern of welding was examined. Participants (N = 71) were randomly assigned a specific sequence of welding between Gas Metal Arc Welding (GMAW) and Shielded Metal Arc Welding (SMAW). The hypothesis of teaching beginning welders the GMAW process before the SMAW process to improve the ability to master American Welding Society (AWS) welds was tested. A welding pretest was administered to determine any prior welding knowledge. Sixty minutes of welding instruction taught proper welding safety, machine set-up, arc length, travel speed, work angle, and correct bead formation. Two practice sessions of 60 minutes were given for participants to become familiar with each welding process, followed by two testing sessions of ten minutes. During the testing period, individuals were assessed on their ability to produce an AWS 1F (flat position- fillet) lap weld in a given sequence. Welds were graded according to the AWS rubric for fillets with a total of four criteria categories based on the following criteria: a) presence of cracks or porosity, b) complete fusion, c) fillet leg size is specified minimum, and d) undercut - not to exceed 1/32 inches. The study indicate that students perform welds that meet AWS quality standards when using the GMAW process, however, the results were not statistically significant.
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Books on the topic "SMDW"

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AG, Siemens. SMD-Bauelemente =: SMD components. M"unchen: Siemens AG, 1988.

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Mark, Miller. Analyzing broadband networks: Frame relay, SMDS & ATM. New York: M&T Books, 1994.

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Fyfe, Alistair. SMDP primary software development project: Final report. Glasgow: Scottish Microelectronics Development Programme, 1985.

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Corporation, Toshiba. Power MOSFETs: SMD, high-voltage. Tokyo: Toshiba Corporation, 1992.

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Mark, Miller. Analyzing broadband networks: ISDN, frame relay, SMDS, & ATM. 2nd ed. New York: M&T Books, 1997.

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Semiconductors, ITT. Discrete semiconductors for surface mounting (SMD). Freibourg: ITT Semiconductors, 1986.

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Semiconductors, ITT. Discrete semiconductors for surface mounting (SMD). Freiburg: ITT Semiconductors, 1991.

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John, Atkins. Total area networking: ATM, IP, frame relay, and SMDS explained. 2nd ed. Chichester, England: Wiley, 1999.

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Widows, Society of Military. SMW book of prayers, invocations, and inspirational thoughts. Denver, Colo: Image Imprints, 1990.

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Kaj, Tesink, ed. SMDS: Wide-area data networking with switched multi-megabit data service. Englewood Cliffs, N.J: Prentice Hall, 1995.

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Book chapters on the topic "SMDW"

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Bährle-Rapp, Marina. "PEG-8/SMDI Copolymer." In Springer Lexikon Kosmetik und Körperpflege, 412. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_7681.

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Bährle-Rapp, Marina. "PPG-12/SMDI Copolymer." In Springer Lexikon Kosmetik und Körperpflege, 451. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_8458.

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Bährle-Rapp, Marina. "PPG-51/SMDI Copolymer." In Springer Lexikon Kosmetik und Körperpflege, 451. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_8459.

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Pfeffer, Michael, and Joerg Franke. "SMD Component Placement." In CIRP Encyclopedia of Production Engineering, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-642-35950-7_16836-1.

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Pfeffer, Michael, and Jörg Franke. "SMD Component Placement." In CIRP Encyclopedia of Production Engineering, 1578–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-53120-4_16836.

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Bernstein, Herbert. "Verarbeitungen von SMD-Bauelementen." In Elektronik und Mechanik, 431–573. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-30758-5_6.

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Field, Jim, John Payne, and Chris Cullen. "SMD Placement Using Machine Vision." In The Electronics Assembly Handbook, 175–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-662-13161-9_31.

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Keeler, Robert. "Adhesives for SMD Wave Soldering." In The Electronics Assembly Handbook, 275–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-13161-9_47.

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Farrell, Michael. "Research into homicide and SMD." In Homicide and Severe Mental Disorder, 75–93. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003172727-5.

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Farrell, Michael. "Understanding SMD, homicide, and prevention." In Homicide and Severe Mental Disorder, 15–33. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003172727-2.

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Conference papers on the topic "SMDW"

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Neves, Dyenifer Sara Lopes, Augusto Borges Matos, Rafaella Moniza Bento Palmeira Figueiredo, Letícia de Castro Ottoni, and Letícia Ariane Tanure. "RELAÇÃO CAUSAL ENTRE A SÍNDROME MIELODISPLÁSICA E LEUCEMIA MIELÓIDE AGUDA." In I Congresso Brasileiro de Hematologia Clínico-laboratorial On-line. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/636.

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Introdução: As síndromes mielodisplásicas (SMD) são resultado de alteração em um ou mais genes que controlam o desenvolvimento de células sanguíneas, causando displasia em pelo menos uma linhagem celular. A SMD afeta em sua maioria os idosos, podendo variar de um impacto mínimo ou se estender a um curso muito agressivo com progressão para leucemia mielóide aguda (LMA), que se dá através de mutações em determinados genes, em especial as que envolvem cariótipo complexo. Objetivos: Discutir, com base na literatura utilizada, a relação causal entre a SMD e LMA. Material e métodos: Foi realizada uma revisão integrativa da literatura de artigos das plataformas Scielo, PubMed e Nature, na busca por análise, registro e interpretação acerca dos resultados visando artigos de relevância para o resumo. Resultados: Há diferenças no padrão de progressão da SMD para LMA. Isso ocorre devido às diferentes mutações no curso da mielodisplasia. Assim, SMDs com mutações somáticas heterozigotas no gene SF3B1 (splicing fator 3b, subunit 1) apresentam uma característica de progressão lenta e crônica, raramente evoluindo para LMA. Quando ocorre a progressão, ela se deve a aquisições ou expansões de mutações somáticas com inativação dos genes RUNX1 ou EZH2. Em contrapartida, as SMDs com combinações de genes mutados, sobretudo os genes codificadores de splicing de RNA SRSF2 e U2AF1, evoluem com grande presença de blastos desde o início da doença e progridem, frequentemente, para LMA, quando a contagem de blastos na medula óssea supera 20%. Conclusão: Apesar de raros casos de SMD com mutações no gene SF3B1 evoluírem para LMA, outros genes comprovaram a relação causal entre SMD e LMA. Translocações envolvidas na patogênese da LMA também estão associadas à SMD, evidenciando um padrão de continuidade entre as doenças.
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Son, S. Y., and K. D. Kihm. "Effect of Coal Particle Size on Coal-Water Slurry (CWS) Atomization." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0885.

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Abstract The effect of coal particle size on coal-water slurry (CWS) atomization is examined by comparing classified CWS sprays containing coal particles in different size ranges. The sprays are generated by injecting a CWS mixture into a sonic air jet and the Malvern sizing system nonintrusively measures spray Sauter mean diameters (SMD). The results consistently show that the spray SMDs of the CWS containing smaller coal particles are larger than the spray SMDs of the CWS containing larger coal particles. The internal capillary holding force between the particles and water increases with decreasing particle sizes because of their smaller radii of curvature. This increased holding force strongly resists against the external airblast and makes the atomization difficult. On the other hand, the relatively small capillary holding force of the CWS containing larger coal particles carries weaker resistance to the external airblast, and smaller spray SMDs result.
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Ando, Hiroki, Takahiko Murakami, and Naoki Muramatsu. "Prototyping of Electric Tweezer-Type Soldering Iron Device With Flexible Fingers for SMD." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72067.

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This paper proposes a new tweezer-type soldering iron device. The aim of this device is to make it easier for someone to remove defective small surface mount devices (SMDs) from the high density circuit board. Removal of small SMDs is difficult because of the size and small working space. The proposed device has two flexible fingers to grip small SMDs stably. The opening and closing operation of the two fingers are motorized. Moreover, the two heated metal tips of the tweezer-type soldering iron are divided into the two metal tips unitized into one unit and the one heater, and it is therefore made possible to easily exchange only the metal tips. The proposed electric tweezer-type soldering iron device with flexible fingers is prototyped. From experimental results, the feasibility and effectiveness of the proposed device are verified. In a rework test, a small SMD of 1.2mm × 0.6mm in size has been removed from the circuit board and the operation time has achieved less than 10 seconds.
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van Veelen, J. B. "SMDS." In the 2006 international workshop. New York, New York, USA: ACM Press, 2006. http://dx.doi.org/10.1145/1137677.1137689.

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Asche, S. "International SMDS." In IEE Colloquium on Practical Experience with SMDS (Switched Multi-Megabit Data Service). IEE, 1995. http://dx.doi.org/10.1049/ic:19950997.

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Simmons, Benjamin M., Heena V. Panchasara, and Ajay K. Agrawal. "A Comparison of Air-Blast and Flow-Blurring Injectors Using Phase Doppler Particle Analyzer Technique." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60239.

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Recent research on biofuels for power generation has typically focused on biodiesel because the biodiesel feedstrock, e.g., vegetable oil, poses significant combustion problems related to poor atomization. Existing injectors cannot effectively atomize high viscosity fuels such as vegetable oil. However, a new, novel flow-blurring (FB) injector concept has shown promise in overcoming the atomization problems. In this study, a FB injector is compared to a commercial air-blast (AB) injector operated with water at ambient conditions of temperature and pressure. Laser sheet visualization and Phase Doppler Particle Analyzer (PDPA) systems are used to obtain the spray characteristics for a range of air to liquid (ALR) ratios. Results show significant difference in distributions of Sauter Mean Diameters (SMDs), and mean and root-mean square axial velocity for the two injectors operated at a fixed ALR. In comparison to the AB injector, the FB injector produced spray with smaller SMDs, a smaller SMD range over the spray volume, higher RMS and mean axial velocities in the center region, and a compact spray with spray angle nearly independent of ALR. Results show that the FB injector is an effective way of atomizing liquids at relatively low ALRs compared to a traditional AB injector, without the additional pressure drop penalty.
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"SMDB 2021 Organization." In 2021 IEEE 37th International Conference on Data Engineering Workshops (ICDEW). IEEE, 2021. http://dx.doi.org/10.1109/icdew53142.2021.00032.

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"SMDB 2021 Keynotes." In 2021 IEEE 37th International Conference on Data Engineering Workshops (ICDEW). IEEE, 2021. http://dx.doi.org/10.1109/icdew53142.2021.00033.

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"SMDB - Title Page." In 21st International Conference on Data Engineering Workshops (ICDEW'05). IEEE, 2005. http://dx.doi.org/10.1109/icde.2005.284.

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"2020 IEEE International Conference on Smart Data Services (SMDS) SMDS 2020." In 2020 IEEE International Conference on Smart Data Services (SMDS). IEEE, 2020. http://dx.doi.org/10.1109/smds49396.2020.00004.

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Reports on the topic "SMDW"

1

Dy, Sydney M., Arjun Gupta, Julie M. Waldfogel, Ritu Sharma, Allen Zhang, Josephine L. Feliciano, Ramy Sedhom, et al. Interventions for Breathlessness in Patients With Advanced Cancer. Agency for Healthcare Research and Quality (AHRQ), November 2020. http://dx.doi.org/10.23970/ahrqepccer232.

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Objectives. To assess benefits and harms of nonpharmacological and pharmacological interventions for breathlessness in adults with advanced cancer. Data sources. We searched PubMed®, Embase®, CINAHL®, ISI Web of Science, and the Cochrane Central Register of Controlled Trials through early May 2020. Review methods. We included randomized controlled trials (RCTs) and observational studies with a comparison group evaluating benefits and/or harms, and cohort studies reporting harms. Two reviewers independently screened search results, serially abstracted data, assessed risk of bias, and graded strength of evidence (SOE) for key outcomes: breathlessness, anxiety, health-related quality of life, and exercise capacity. We performed meta-analyses when possible and calculated standardized mean differences (SMDs). Results. We included 48 RCTs and 2 retrospective cohort studies (4,029 patients). The most commonly reported cancer types were lung cancer and mesothelioma. The baseline level of breathlessness varied in severity. Several nonpharmacological interventions were effective for breathlessness, including fans (SMD -2.09 [95% confidence interval (CI) -3.81 to -0.37]) (SOE: moderate), bilevel ventilation (estimated slope difference -0.58 [95% CI -0.92 to -0.23]), acupressure/reflexology, and multicomponent nonpharmacological interventions (behavioral/psychoeducational combined with activity/rehabilitation and integrative medicine). For pharmacological interventions, opioids were not more effective than placebo (SOE: moderate) for improving breathlessness (SMD -0.14 [95% CI -0.47 to 0.18]) or exercise capacity (SOE: moderate); most studies were of exertional breathlessness. Different doses or routes of administration of opioids did not differ in effectiveness for breathlessness (SOE: low). Anxiolytics were not more effective than placebo for breathlessness (SOE: low). Evidence for other pharmacological interventions was limited. Opioids, bilevel ventilation, and activity/rehabilitation interventions had some harms compared to usual care. Conclusions. Some nonpharmacological interventions, including fans, acupressure/reflexology, multicomponent interventions, and bilevel ventilation, were effective for breathlessness in advanced cancer. Evidence did not support opioids or other pharmacological interventions within the limits of the identified studies. More research is needed on when the benefits of opioids may exceed harms for broader, longer term outcomes related to breathlessness in this population.
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Piscitello, D., and J. Lawrence. The Transmission of IP Datagrams over the SMDS Service. RFC Editor, March 1991. http://dx.doi.org/10.17487/rfc1209.

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Brown, T. Definitions of Managed Objects for SMDS Interfaces using SMIv2. Edited by K. Tesink. RFC Editor, August 1994. http://dx.doi.org/10.17487/rfc1694.

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Libbert, Kerry J. Performance Oriented Packaging Testing of Wirebound Wood Boxes for SMAW Rockets. Fort Belvoir, VA: Defense Technical Information Center, March 1992. http://dx.doi.org/10.21236/ada248642.

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Merkin, V. G., K. Sorathia, L. Daldorff, A. Ukhorskiy, M. Sitnov, and J. Lyon. Comments for Open Code Policy for NASA SMD. Washington, D.C.: National Academies Press, December 2018. http://dx.doi.org/10.17226/25217_18.

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DeVore, C. Richard, Spiro K. Antiochos, Alex Glocer, Judith T. Karpen, James E. Leake, and Peter J. MacNeice. Implications of a Future NASA SMD Open-Source Policy. Washington, D.C.: National Academies Press, December 2018. http://dx.doi.org/10.17226/25217_22.

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Jordan, Mary S., and Philip A. Durkee. Verification and Validation of the Satellite Marine-Layer/Elevated Duct Height (SMDH) Technique. Fort Belvoir, VA: Defense Technical Information Center, December 2000. http://dx.doi.org/10.21236/ada390416.

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Acton, Charles H. White Paper on Possible NASA SMD Open Code Policy and Practices. Washington, D.C.: National Academies Press, December 2018. http://dx.doi.org/10.17226/25217_11.

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Ehst, David A. Tosoh SMD, Inc./Production of High-Quality Tantalum: Final CRADA Report. Office of Scientific and Technical Information (OSTI), October 2016. http://dx.doi.org/10.2172/1344803.

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Taasevigen, Danny J., Michael R. Brambley, Yunzhi Huang, Robert G. Lutes, and Spencer P. Gilbride. Field Testing and Demonstration of the Smart Monitoring and Diagnostic System (SMDS) for Packaged Air-Conditioners and Heat Pumps. Office of Scientific and Technical Information (OSTI), May 2015. http://dx.doi.org/10.2172/1194304.

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