Academic literature on the topic 'Array segment'
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Journal articles on the topic "Array segment"
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Commins, Deirdre, Sanjeev Gupta, and Joseph Cartwright. "Deformed streams reveal growth and linkage of a normal fault array in the Canyonlands graben, Utah." Geology 33, no. 8 (August 1, 2005): 645–48. http://dx.doi.org/10.1130/g21433ar.1.
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Abstract We use the deformation of streams by the growth of active normal faults within the Canyonlands graben of southeastern Utah to constrain the displacement evolution of a fault array during segment interaction and linkage. Coupling fault displacement data with geomorphic analysis of present-day streams and paleostreams permits sequential reconstruction of a three-segment fault array from initial component segments to its final displacement geometry. Our results show that although segment interaction causes enhanced displacement addition at overlap zones, postlinkage displacement accumulation is significant and permits array equilibration to a displacement-length ratio characteristic of a single fault. Evidence of stream disequilibrium indicates that this postlinkage displacement addition was rapid compared to that during the fault interaction phase.
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Мистонов, А. А., И. С. Дубицкий, А. Х. А. Елмекави, Е. Г. Яшина, С. В. Сотничук, K. С. Напольский, and Д. Менцель. "Изменение направления оси легкого намагничивания массивов сегментированных нанонитей Ni/Cu с увеличением длины сегмента Ni." Физика твердого тела 63, no. 7 (2021): 881. http://dx.doi.org/10.21883/ftt.2021.07.51037.237.
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Arrays of ordered segmented nanowires are considered as a promising material for three-dimensional information storage systems. However, the presence of a large number of competing interactions significantly complicates the description of the magnetic behavior of such systems. In this work, the influence of the length of the nickel segment on the integral magnetic properties of the array is investigated. In particular, it is shown that the change in the direction of the easy axis of magnetization occurs when the segment length to diameter ratio is in the range from 10 to 20.
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Zheng, Fuzhong, Shaochun Huang, Yuan Zhai, Yi Xiang, and Ying Wu. "LED Device Based on Single-Walled Carbon Nanotube Arrays." Journal of Nanoelectronics and Optoelectronics 16, no. 3 (March 1, 2021): 368–73. http://dx.doi.org/10.1166/jno.2021.2963.
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The migration model of the (n, 0) zigzag SWNT is established on the basis of Mathiessen’s law to calculate carrier mobility, which are the foundation for performance analysis of electroluminescence light emission. The split-gate technique is used to create p-and n-doped regions in the single-walled carbon nanotube (SWNT) arrays that are separated by a gap with a width of several microns. The LED devices based on SWNT arrays using split-gate technique are fabricated and tested by using an optical measurement system. Compared to the LED with the central gate, the split-gate SWNT LED has enhanced the light generation efficiency of the intrinsic SWNT array segment by decreasing the potential barrier across the junction of the intrinsic SWNT array segment. The results demonstrate the luminescent principle of LED based on SWNT array in theoretical simulation and device measurement.
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García Fernández, Javier, Víctor Vega Martínez, Andy Thomas, Víctor de la Prida Pidal, and Kornelius Nielsch. "Two-Step Magnetization Reversal FORC Fingerprint of Coupled Bi-Segmented Ni/Co Magnetic Nanowire Arrays." Nanomaterials 8, no. 7 (July 19, 2018): 548. http://dx.doi.org/10.3390/nano8070548.
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First Order Reversal Curve (FORC) analysis has been established as an appropriate method to investigate the magnetic interactions among complex ferromagnetic nanostructures. In this work, the magnetization reversal mechanism of bi-segmented nanowires composed by long Co and Ni segments contacted at one side was investigated, as a model system to identify and understand the FORC fingerprint of a two-step magnetization reversal process. The resulting hysteresis loop of the bi-segmented nanowire array exhibits a completely different magnetic behavior than the one expected for the magnetization reversal process corresponding to each respective Co and Ni nanowire arrays, individually. Based on the FORC analysis, two possible magnetization reversal processes can be distinguished as a consequence of the ferromagnetic coupling at the interface between the Ni and Co segments. Depending on the relative difference between the magnetization switching fields of each segment, the softer magnetic phase induces the switching of the harder one through the injection and propagation of a magnetic domain wall when both switching fields are comparable. On the other hand, if the switching fields values differ enough, the antiparallel magnetic configuration of nanowires is also possible but energetically unfavorable, thus resulting in an unstable magnetic configuration. Making use of the different temperature dependence of the magnetic properties for each nanowire segment with different composition, one of the two types of magnetization reversal is favored, as demonstrated by FORC analyses.
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Zheng, M., Z. Z. Wu, and Z. Q. Zhu. "Partitioned stator flux reversal machines having Halbach array PMs." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 35, no. 2 (March 7, 2016): 396–406. http://dx.doi.org/10.1108/compel-12-2015-0442.
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Purpose – In this paper, the partitioned stator flux reversal permanent magnet (PM) (PS-FRPM) machines with Halbach array PMs are investigated to compare with the machine having the conventional parallel magnetized PMs, and conventional FRPM machine. This paper aims to discuss these issues. Design/methodology/approach – The Halbach array PM machines with 2-, 3-, and 4-segment and ideal Halbach array PMs have similar topology and designed based on the PS-FRPM with parallel magnetized PMs. The open circuit analysis and electromagnetic performance has been calculated and compares with the aid of finite element (FE) method, and validated by experiments. Findings – The PS-FRPMs with Halbach array PMs have higher back-EMF and torque performance, as well as lower cogging torque and torque ripple, all having significantly higher torque density than the FRPM machine with single stator. The experimental results and FE predicted results of the 2-segment Halbach PM prototype machine are compared and good agreement is achieved. Originality/value – This paper introduces the new concept and design of PS-FRPMs having Halbach array PMs with different PM segments and idea PM array. The comparison with conventional FRPM and PS-FRPM with parallel magnetized PMs shows the benefits with PS-FRPMs with Halbach array PMs.
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Tomčík, Peter, and Dušan Bustin. "Interdigitated Array Diffusion Layer Titration of Dithiocarbamates with Electrogenerated Hypobromite." Collection of Czechoslovak Chemical Communications 65, no. 6 (2000): 1029–34. http://dx.doi.org/10.1135/cccc20001029.
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A simple but sensitive technique was developed for determination of dithiocarbamates. The proposed method is based on its oxidation with hypobromite under the formation of sulfate. The oxidation proceeds only in the close vicinity of interdigitated array microelectrode (IDA), the segments of which were used as working and indicator electrodes. Hypobromite was formed by disproportionation of galvanostatically generated bromine (from bromide) in weakly alkaline solution on one segment of IDA (generator). The unreacted flux of hypobromite was amperometrically detected on the second segment (collector-indicator). The hypobromite flux is influenced by dithiocarbamates present in solution, causing changes in the collector versus generator current plot (titration curve) which can be quantitatively evaluated. The sensitivity of the method is 7 795 l mol-1 μA and detection limit estimated according to the 3s criterion is 2.2 · 10-6 mol l-1. The technique was used in analysis of real samples, such as in determination of a pesticide residues in cucumber leaves.
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Timofeev, Evgeniy Alexandrovich. "On a Segment Partition for Entropy Estimation." Modeling and Analysis of Information Systems 27, no. 1 (March 23, 2020): 40–47. http://dx.doi.org/10.18255/1818-1015-2020-1-40-47.
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Let \(Q_n\) be a partition of the interval \([0,1]\) defines as\(\begin{array}{l}Q_1 =\{0,q^2,q,1\}. \\Q_{n+1}' = qQ_n \cap q^2Q_n, \ \Q_{n+1}'' = q^2+qQ_n \cap qQ_n, \ \Q_{n+1}'''= q^2+qQ_n \cap q+q^2Q_n, \\Q_{n+1} = Q_{n+1}'\cup Q_{n+1}'' \cup Q_{n+1}''', \end{array}\)where \(q^2+q=1\).The sequence \(d= 1,2,1,0,1,2,1,0,1,0,1,2,1,0,1,2,1,\dots\) defines as follows.\(\begin{array}{l} d_1=1, \ d_2=2,\ d_4 =0; d[2F_{2n}+1 : 2F_{2n+1}+1] = d[1:2F_{2n-1}+1];\\ \quad n = 0,1,2,\dots;\\d[2F_{2n+1}+2 : 2F_{2n+1}+2F_{2n-2}] = d[2F_{2n-1}+2:2F_{2n}];\\d[2F_{2n+1}+2F_{2n-2}+1 : 2F_{2n+1}+2F_{2n-1}+1] = d[1:2F_{2n-3}+1];\\d[2F_{2n+1}+2F_{2n-1}+2 : 2F_{2n+2}] = d[2F_{2n-1}+2:2F_{2n}];\\ \quad n = 1,2,3,\dots;\\ \end{array}\)where \(F_n\) are Fibonacci numbers (\(F_{-1} = 0, F_0=F_1=1\)).The main result of this paper.\({\bf Theorem.}\\Q_n' = 1 - Q_n''' =\left \{ \sum_{i=1}^k q^{n+d_i}, \ k=0,1,\dots, m_n\right\},\\Q_n'' = 1 - Q_n'' = \left\{q^2 + \sum_{i=m_n}^k q^{n+d_i}, \ k=m_n-1,m_n,\dots, m_{n+1} \right\},\\\)where \(m_{2n} = 2F_{2n-2}, \ m_{2n+1} = 2F_{2n-1}+1\).
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Landschulz, WH, PF Johnson, and SL McKnight. "The leucine zipper: a hypothetical structure common to a new class of DNA binding proteins." Science 240, no. 4860 (June 24, 1988): 1759–64. http://dx.doi.org/10.1126/science.3289117.
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A 30-amino-acid segment of C/EBP, a newly discovered enhancer binding protein, shares notable sequence similarity with a segment of the cellular Myc transforming protein. Display of these respective amino acid sequences on an idealized alpha helix revealed a periodic repetition of leucine residues at every seventh position over a distance covering eight helical turns. The periodic array of at least four leucines was also noted in the sequences of the Fos and Jun transforming proteins, as well as that of the yeast gene regulatory protein, GCN4. The polypeptide segments containing these periodic arrays of leucine residues are proposed to exist in an alpha-helical conformation, and the leucine side chains extending from one alpha helix interdigitate with those displayed from a similar alpha helix of a second polypeptide, facilitating dimerization. This hypothetical structure is referred to as the "leucine zipper," and it may represent a characteristic property of a new category of DNA binding proteins.
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Iriarte, Juan Carlos, IÑigo Ederra, RamÓn Gonzalo, Yan Brand, Aurelien Fourmault, Yves Demers, Luca Salgetti-Drioli, and Peter de Maagt. "EBG Superstrate Array Configuration for the WAAS Space Segment." IEEE Transactions on Antennas and Propagation 57, no. 1 (January 2009): 81–93. http://dx.doi.org/10.1109/tap.2008.2009732.
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Bernards, A., J. M. Kooter, and P. Borst. "Structure and transcription of a telomeric surface antigen gene of Trypanosoma brucei." Molecular and Cellular Biology 5, no. 3 (March 1985): 545–53. http://dx.doi.org/10.1128/mcb.5.3.545.
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The gene encoding variant surface glycoprotein 221 in Trypanosoma brucei is located adjacent to a chromosome end and can be activated with or without a concomitant gene duplication. To test whether transcription initiates within the cloned segment of the 221 gene, we analyzed nascent and stable transcripts. We show here that the 221 coding region and 8.5 kilobases of adjacent upstream DNA are transcribed into nascent RNA at a similar rate when gene 221 is activated without duplication. Since only part of this transcribed upstream segment is transferred with the coding region to another telomere upon duplicative activation of gene 221, we infer that initiation of variant surface glycoprotein gene transcription occurs outside the gene segment that moves into an expression site by gene conversion. Our analysis shows that part of the variant surface glycoprotein 221 transcription unit consists of an unusual 3.5-kilobase tandem array of ca. 50 repeat segments and that a rearrangement in this array accompanies the nonduplicative activation of gene 221. A variant surface glycoprotein pseudogene is located within the transcription unit of gene 221, and we discuss models that account for this unusual situation.
Dissertations / Theses on the topic "Array segment"
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Eclache-Saudreau, Virginie. "Analyse des altérations structurales du génome dans la Leucémie Lymphoïde Chronique : apport de l’hybridation génomique comparative sur puces à ADN (CGH –array)." Paris 13, 2011. http://www.theses.fr/2011PA132047.
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La leucémie Lymphoïde Chronique (LLC) est la plus fréquente des hémopathies occidentales. Les anomalies génétiques détectées par la technique d’hybridation in situ par fluorescence (FISH) ont une valeur pronostique bien établie. Dans ce travail, j’ai étudié les anomalies génétiques de la LLC à l’aide de plusieurs techniques. La FISH a été la méthode la plus sensible pour détecter la présence d’une délétion dans la région 13q14, ciblée sur le marqueur D13S319, dans 54% des cas d’une cohorte de 314 patients. La représentativité du clone variait de 7 à 90% ; le plus souvent monoallélique, la délétion portait sur les 2 allèles dans 9% des cas et des délétions mono- et bi-alléliques coexistaient dans 15% des cas. Nous avons réalisé une étude en Hybridation Génomique Comparative sur micro-puces recouvertes d’oligonucléotides (CGH-a) qui permet de quantifier les copies d’un gène sur l’ADN de patients par rapport à un témoin. Nous avons ainsi observé une grande variation de la taille de la délétion allant d’une région minimale, restreinte à une zone appelée BCMS comprenant les MicroARN 15 et 16, à une grande région de 60 M bases couvrant une zone allant du gène du Rétinoblastome à celui de la protocadherine. La CGH nous a également permis dans 3 cas, de mettre en évidence une délétion sur le chromosome 14, impliquant notamment le gène codant les immunoglobulines. Nous avons identifié un gène de fusion impliquant un nouveau partenaire : ZFP36L1 membre de la famille des tristétraprolines facteurs régulateurs de la transcription. Le rôle fonctionnel de ce nouveau transcrit dans la leucémogenèse est en cours d’étudeB-cell chronic lymphocytic leukemia (CLL) is the most frequent leukemia in western countries. Genomic abnormalities detected by Fluorescence in situ hybridization (FISH) are emerging prognostic indicators important in CLL. These ones are observed in about 80% of CLL patients and have been associated to defined subgroups with different clinical outcomes. In this project, different techniques have been performed aiming at the identification of new genetic abnormalities in CLL. FISH was the most sensitive one, identifying deletion del13q14 in 54% of 314 patients with a restriction to the D13S319 marker. We showed that the del13q deletion was heterogeneous and the clonality of the deletion was highly variable, ranging from 7 to 90 %, monoallelic in most cases but biallelic in 9. 5% and concomitantly mono and bi-allelic in 15% of the cases. We also used Comparative Genomic Hybridization performed on DNA array (CGH-a) that measured differences in DNA copy number between patients and reference genomes. We observed variable sizes of deletion ranging from a Minimal deleted region (BCMS) including microRNAs 15 /16 to a very large region of 60 Mb, including RB1 or protocadherin in the opposite sides. CGH-array allowed to detect a deletion del14q in 3 cases, with a fusion between Immunoglobulin gene and a new partner that we identified as ZFP36L1 a member of the tris tetrapolin family of proteins involved in mRNA decay. The functional role of this new fusion gene in leukemogenesis is currently under study
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Shen, Yang. "Novel permanent magnet brushless machines having segmented Halbach array." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/3376/.
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Permanent magnet brushless machines having Halbach array exhibit a number of attractive features. Therefore, they have been increasingly applied to different market sectors, including aerospace, industrial, domestic, renewable, and healthcare, etc. The need of fast global optimization, cost-effective design, and physical understanding of the relationship between parameters and performance requires a powerful analytical model. This thesis develops a general analytical model which is capable of predicting the electromagnetic performance of slotted/slotless permanent magnet brushless machines with both even- and odd-segment Halbach array, having different magnet remanence, magnetization angle and arc for each single magnet segment. The validity of proposed analytical model is examined by finite-element analyses. The price of Neodymium Iron Baron magnet has been raised rapidly over the last few years, which has increased the awareness of cost-effective design and leads the magnet usage efficiency, viz. the ratio of average output torque over permanent magnet volume, to be an important design concern for industry applications. Meanwhile, the needs of high electromagnetic performance including lower torque ripple and sinusoidal air-gap flux density are also critically required. In order to meet such demands, the magnet poles having unequal-magnet height, modular high cost and low cost magnets, together with Halbach magnetization are proposed in this thesis. Based on the developed analytical models, extensive investigation has been performed. Furthermore, in order to fast optimize design parameters, e.g. optimal magnet arc ratio for 2-segment Halbach array and split ratio for external rotor PM machine, two analytical models are developed and validated by finite-element analysis and measurements. With the aid of developed analytical models and finite element analyses, the findings provide useful guidelines for design and analysis of permanent magnet brushless machine having conventional and proposed Halbach arrays.
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Catelani, Ana Lúcia Pereira Monteiro. "Variação no número de cópias de segmentos de DNA (CNV) em pacientes com surdez sindrômica." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/41/41131/tde-28062010-123759/.
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A perda auditiva é o defeito mais comum ao nascimento e cerca de 70 milhões de pessoas no mundo apresentam algum grau de perda auditiva. Além da alta incidência, as implicações da perda auditiva na linguagem, na cognição e no desenvolvimento emocional e social reforçam sua importância. No entanto, em grande parte dos pacientes, a causa da deficiência auditiva não é esclarecida. Nós usamos hibridação comparativa do genoma baseada em arrays (Array Comparative Genomic Hybridization aCGH) para investigar alterações no número de cópias de segmentos de DNA (Copy Number Variation CNV) em 31 indivíduos que apresentavam deficiência auditiva e sinais clínicos adicionais, mas que não puderam ser classificados em síndrome conhecida. A escolha de indivíduos sindrômicos se baseou no pressuposto de que, em média, apresentam alterações genômicas maiores e, portanto, mais provavelmente detectáveis com o uso de aCGH de 1 Mb, que era a plataforma disponível no início do projeto. CNVs não descrita em bancos de dados de indivíduos normais foram identificadas em oito pacientes, quatro delas ocorreram de novo enquanto as outras quatro foram herdadas de um genitor fenotipicamente normal. As alterações de novo definem segmentos cromossômicos que provavelmente contém genes relacionados à deficiência auditiva e sensíveis a dose, especificamente: 1q23.3-q25.2, 2q22q23, 6p25.3 e 11q13.2-q13.4. As alterações raras identificadas tanto nos pacientes quanto em um genitor normal poderiam ser um evento ao acaso, sem papel na deficiência auditiva; no entanto, a possibilidade de que essas alterações possam funcionar como fatores de predisposição não podem ser descartadas. Se considerarmos apenas as CNVs de novo como causativas dos fenótipos investigados, detectamos quatro pacientes portadores entre os 31 investigados (13%). Se considerarmos também as CNVs herdadas como possivelmente causativas, a taxa de desequilíbrios cromossômicos associados à surdez será de 26%. Esses resultados são provavelmente uma substimativa e esses números seriam possivelmente maiores com o uso de uma das plataformas de alta resolução disponíveis atualmente. Esses resultados, embora limitados, indicam que investigação por aCGH em pacientes com surdez sindrômica idiopática está entre os testes mais eficientes para detectar etiologia dos fenótipos, devendo ser incorporado à rotina no diagnóstico e aconselhamento genético.Hearing loss is the most common congenital deficiency and about 70 million people worldwide present some degree of hearing impairment. In addition to its high incidence, hearing loss impacts language, cognition and social and emotional development. However, in a large proportion of patients, the cause of the hearing deficiency cannot be elucidated. We screened copy number changes by 1 Mb-array Comparative Genomic Hybridization (aCGH) in 31 individuals with syndromic hearing impairment whose clinical features were untypical for known disorders. The choice of evaluating syndromic rather than non-syndromic individuals was based on the assumption that they are more likely to carry larger genomic alterations which could be more easily detected by the comparatively low resolution 1 Mb aCCG, which was the available platform when this project started. Copy number changes (CNV) not documented in the database of normal individuals were detected in eight patients, four de novo imbalances and four inherited from a normal parent. The de novo alterations define candidate chromosome segments likely to harbor dosage sensitive genes related to hearing impairment, namely 1q23.3-q25.2, 2q22q23, 6p25.3 and 11q13.2- q13.4. The rare imbalances also present in normal parents might be casually associated with hearing impairment, but also have a possible role as a predisposition factor. When only the de novo CNVs were considered causative for the disease phenotypes, our study revealed relevant copy number changes in 4 patients (13%). If we also count the rare CNVs that had been inherited as possibly causative, the frequency of chromosome imbalances associated with syndromic deafness in our sample becomes 26%. These figures are probably underestimates and will probably become larger when high resolution oligoarray platforms are applied. These results indicate that aCGH is an efficient tool for defining the etiology of syndromic deafness and its use in routine diagnosis of hearing impairment and for genetic counseling is highly recommended.
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Locke, Devin Paul. "SEGMENTAL DUPLICATIONS PROMOTE GENOMIC INSTABILITY IN HUMAN CHROMOSOME 15q11-q13." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1088114861.
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Ginsz, Michaël. "Characterization of high-purity, multi-segmented germanium detectors." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAE047/document.
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L’apparition de la segmentation électrique des détecteurs au GeHP et de l’électronique numérique a ouvert la voie à des applications prometteuses, telles que le tracking γ, l’imagerie γ ou la mesure bas bruit de fond, pour lesquelles une connaissance fine de la réponse du détecteur est un atout. L’IPHC a développé une table de scan utilisant un faisceau collimaté, qui sonde la réponse d’un détecteur dans tout son volume en fonction de la localisation de l’interaction. Elle est conçue pour utiliser une technique innovante de scan 3D, le Pulse Shape Comparison Scan, qui a été d’abord simulée afin de démontrer son efficacité. Un détecteur AGATA a été scanné de manière approfondie. Des scan 2D classiques ont permis, entre autres, de mettre en évidence des effets locaux de modification de la collection des charges, liés à la segmentation. Pour la première fois, une base de données 3D, complète, de formes d’impulsions fonction de la position d’interaction a été établie. Elle permettra notamment d’améliorer les performances du spectromètre AGATARecent developments of electrical segmentation of HPGe detectors, coupled with digital electronics have led to promising applications such as γ-ray tracking, γ-ray imaging or low-background measurements which will benefit from a fine knowledge of the detector response. The IPHC has developed a new scanning table which uses a collimated γ-ray beam to investigate the detector response as a function of the location of the γ-ray interaction. It is designed to use the Pulse Shape Comparison Scan technique, which has been simulated in order to prove its efficiency. An AGATA detector has been thoroughly scanned. 2D classical scans brought out, for example, local charge collection modification effects such as charge sharing, due to the segmentation. For the first time, a 3D, complete pulse-shape database has been established. It will especially allow to improve the overall AGATA array performances
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Kohl, Ilana. "Pesquisa de genes e/ou segmentos cromossômicos em pacientes com obesidade, e/ou hiperfagia, atraso do desenvolvimento neuropsicomotor e/ou dificuldades de aprendizado e distúrbios de comportamento." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/41/41131/tde-07102010-134828/.
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Obesidade sindrômica é definida como a obesidade ocorrendo em conjunto com várias características clínicas distintas, associadas a retardo mental. A forma sindrômica mais freqüente é a síndrome de Prader-Willi (PWS) caracterizada por hipotonia, dificuldade de sucção no período neonatal, atraso do desenvolvimento neuropsicomotor (DNPM), hiperfagia, obesidade, baixa estatura na adolescência, mãos e pés pequenos, hipogonadismo, dificuldade de aprendizado e distúrbios de comportamento. Estudamos 141 pacientes com obesidade e/ou hiperfagia, atraso no desenvolvimento neuropsicomotor e/ou dificuldades de aprendizado e distúrbios de comportamento, pela técnica de MLPA (multiplex ligation-dependent probe amplification) assim como 19 pacientes que apresentavam além de atraso do DNPM e/ou dificuldade de aprendizado, distúrbios de comportamento, obesidade e/ou hiperfagia, outro sinal ao exame físico que sugerisse alteração cromossômica, pela técnica de SNP-array (The GeneChip 174; Mapping 100K Set, Affymetrix), com o objetivo de identificar genes e/ou segmentos cromossômicos envolvidos com obesidade sindrômica. Essas técnicas detectam deleções e/ ou duplicações do genoma, seja analisando regiões específicas, como a de MLPA, seja cobrindo praticamente o genoma inteiro (SNP-array). Dez pacientes apresentaram alterações cromossômicas: duas deleções 1p36, uma deleção 2p25.3, uma deleção 3p26.3 e duplicação 11q22.3, uma deleção 6(q16.1-q21), duas deleções 12(q15q21.1) (irmãs gêmeas), uma deleção X(p22.13p22.12), uma duplicação 14q11.2 e uma duplicação X(q26.3). Dentre as alterações encontradas estão duas síndromes relacionadas com obesidade já descritas, a monossomia 1p36 e a monossomia 6q16, que são diagnósticos diferencias da PWS. Nos segmentos alterados foram localizados vários genes relacionados a obesidade: DRD2, MCHR2, PLCH2, PRKCZ, RAB21, RAB2B, RAB39, TPO e SIM1. Onze genitores foram analisados por MLPA, SNP-Array e/ou cariótipo e rearranjos cromossômicos não foram identificados. Na presença dos cromossomos parentais normais o risco de recorrência é considerado desprezível. O diagnóstico de pacientes com obesidade sindrômica é um desafio, pois há sobreposição de fenótipos impossibilitando até agora o diagnóstico diferencial, a não ser o da síndrome de Prader-Willi clinicamente reconhecível, pelo menos, em sua segunda fase. O emprego de técnicas que detectam variações no número de cópias do genoma humano amplia a possibilidade de reconhecimento de novas síndromes e a descrição do espectro da variabilidade fenotípica de síndromes conhecidas. Estas síndromes são uma potencial fonte de esclarecimento das causas das formas comuns de obesidade.Syndromic obesity is defined as obesity occurring in association with several distinct clinical features and mental retardation (MR). Prader-Willi syndrome (PWS) is the most frequent syndromic form of obesity and is characterized by hypotonia, poor sucking in the neonatal period, developmental delay, hyperphagia, obesity, short stature in adolescence, small hands and feet, hypogonadism, learning disabilities and behavior disturbances. Herein, we studied 141 patients with obesity and/or hyperphagia, psychomotor developmental delay and/or learning disabilities and behavior disturbances with the technique of MLPA (multiplex ligation-dependent probe amplification), and 19 patients by SNP-array technique (\"The GeneChip 174; Mapping 100K Set, Affymetrix) to identify copy number variations. By using both techniques we detected deletions or duplications of the genome in ten patients: two deletions at 1p36, two deletions at 12q15q21.1 (twins), a deletion of chromosomes 2p25.3, 6q16.1-q21, and Xp22.13p22.12, a duplication of chromosomes 14q11.2 and Xq26.3, and an unbalanced translocation between chromosomes 3p26.3 and 11q22.3. Monosomy 1p36 and monosomy 6q16 are well-known syndromes and had already been related with obesity. Both syndromes are considered as differential diagnosis of PWS. Several genes related to obesity are mapped in the altered chromosome segments: DRD2, MCHR2, PLCH2, PRKCZ, RAB21, RAB2B, RAB39, TPO and SIM1. Eleven parents were studied by MLPA, SNP array, and / or karyotype analyses, and chromosomal rearrangements were not identified. Therefore, we consider these rearrangements to be causative of the patients´ phenotype. The diagnosis of patients with syndromic obesity is a challenge due to the overlapping of the phenotypes, except for Prader-Willi syndrome that is a clinically recognizable syndrome, mainly in its second phase. The use of techniques that detect copy number variations of the human genome will increase the recognition of new syndromes and also the description of the spectrum of phenotypic variability of known syndromes. These syndromes are a potential source for the understanding of the etiology of the common forms of obesity.
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Villela, Darine Christina Maia. "Alterações genômicas e epigenômicas nas manifestações anatomopatológicas e cognitivas da doença de Alzheimer." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/41/41131/tde-16012015-143817/.
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A doença de Alzheimer (DA) é a causa mais comum de demência na população, sendo responsável por cerca de 50 a 60% dos casos. Embora o diagnóstico clínico da doença na maioria das vezes seja acurado, a confirmação da DA só é feita post mortem através principalmente da caracterização dos dois tipos principais de lesões neurais: depósitos extracelulares de placas de β amiloide e emaranhados de proteína tau hiperfosforilada. Até o momento, o envolvimento de apenas quatro genes foi confirmado na etiologia da DA, três deles (APP, PSEN1 e PSEN2) associados à forma familial de herança mendeliana, que corresponde a um tipo raro e grave. No entanto, apesar de inúmeros trabalhos de associação genômica, (Genome wide association studies- GWAS) sugerirem uma possível participação de vários outros genes na suscetibilidade à manifestação da forma multifatorial da DA, o gene APOE, ainda é o único consistente e reproduzivelmente associado à doença. As descobertas derivadas dos GWAS investigando o papel de SNPs coletivamente explicam somente uma pequena porcentagem da variação herdada que contribui para o risco de desenvolver a DA. Atualmente, há novas abordagens para investigar a base genética do restante da variabilidade fenotípica herdada e que pode influenciar a suscetibilidade ao desenvolvimento de doenças complexas. O papel da variação do número de cópias de segmentos de DNA (Copy Number Variation - CNV) na genética de doenças complexas foi demonstrado por diversos estudos nos últimos anos e evidencia que desequilíbrios genômicos também podem contribuir significantemente para a resistência ou susceptibilidade a várias patologias. Outro aspecto que vem assumindo crescente importância é a análise de modificações epigenéticas que podem constituir um mecanismo molecular básico e contribuir diretamente para a patogênese da DA. Logo, este trabalho teve como objetivo principal investigar dois aspectos relacionados à DA: (1) a identificação de CNVs que podem estar contribuindo para o desenvolvimento da forma multifatorial da DA, usando a técnica de array-CGH, e (2) a análise de alterações do padrão global de metilação do DNA no córtex frontal de indivíduos com a forma multifatorial da DA, usando um microarranjo que interroga o status de metilação de 450.000 sítios CpGs. Em nossa investigação sobre desequilíbrios genômicos na DA, identificamos 6 CNVs raras com conteúdo gênico relevante para o fenótipo investigado. Dois indivíduos distintos do grupo DA apresentam microduplicações em genes que codificam diferentes subunidades do mesmo tipo de canal de Ca2+ dependente de voltagem, o tipo L. Além disso, dos outros genes selecionados como especialmente interessantes, 4 estão envolvidos em diferentes processos inflamatórios e 1 é responsável por codificar a enzima nicotinamida fosforibosiltransferase, participante importante da via de biossíntese da molécula nicotinamida adenina dinucleotídeo (NAD). A implicação de um possível envolvimento de mediadores da sinalização celular do Ca2+ e da via de biossíntese da NAD na etiologia da DA também foi reforçada pelos nossos resultados sobre o padrão de metilação do DNA na DA. Dois genes importantes para a homeostasia intracelular do Ca2+ e via de biossíntese da NAD apresentaram sítios CpGs diferenciamente metilados nos sujeitos com DAAlzheimer\'s disease (AD) is the most common form of dementia in the population, corresponding to 50-60% of all cases. Although clinical diagnosis seems to be accurate, the definitive diagnosis of the disease can only be made by a post mortem neuropathological exam that certifies the presence of the two hallmarks of AD: the accumulation of extracellular senile plaques containing β-amyloid (Aβ) and the intracellular neurofibrillary tangles containing hyperphosphorylated tau protein. Four genes are known to be involved in the etiology of AD, three of them (APP, PSEN1 and PSEN2) are associated to the familial form of the disease, which show autosomal dominant inheritance and correspond to the more severe and rare type of AD. Despite many genome wide association studies (GWAS), APOE still remains the only unequivocal genetic risk factor associated to the multifactorial form of AD. The discoveries from GWAS using SNPs collectively explain only a small percentage of heritable variation that may contribute in AD risk. Currently, new approaches have been used to investigate the genetic basis of the phenotypical variability inheritance that can influence the susceptibility of complex diseases. The important role of DNA copy number variation (CNV) has been demonstrated by several studies over the last years and shows that genomic imbalances may also significantly contribute to resistance or susceptibility to various complex diseases. Additionally, there is now increasing interest in exploring how epigenetic modifications, in particular DNA methylation, could influence complex diseases etiology. Thus, the major aim of this work were to investigate two aspects related to the multifactorial form of AD: (1) identification of rare CNVs, using array-CGH, that could contribute to the development of the disease, and (2) analysis of the DNA methylation pattern in frontal cortex of individuals with AD. In our study, we identified 6 rare CNVs with relevant gene content to the investigated phenotype. Two distinct subjects with AD from our casuistic presented microduplications in genes that encode different subunits of the same type of Ca2+ voltage channel, the L-type. Furthermore, among the other selected genes, four are involved in different inflammatory process and one encodes the nicotinamide phosphoribosyltransferase enzyme, important mediator of nicotinamide adenine dinucleotide (NAD) biosynthesis. The implication of a possible involvement of Ca2+ intracellular signaling mediators and NAD biosynthesis pathway in the etiology of AD was also reinforced by our analysis of DNA methylation pattern. Interestingly, two important genes, one to intracellular Ca2+ homeostasis and the other to NAD biosynthesis pathway presented CpGs sites differently methylated in the AD subjects
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De, Canditiis Bartolomeo. "3D characterization of multi-segmented HPGe detectors : simulation and validation of the PSCS technique and its application for different energies with a 152 Eu source." Thesis, Strasbourg, 2020. http://www.theses.fr/2020STRAE008.
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Les ensembles de détecteurs de rayon gamma de nouvelle génération, tel AGATA, utilisent des détecteurs multi-segmentés de germanium hyper-pur dans les expériences de physique nucléaire pour lesquelles une grande résolution et efficacité sont demandées. Ces caractéristiques sont obtenues par l’application des techniques d'analyse des formes d'impulsion et de tracking des rayons gamma. Ces dernières demandent une caractérisation volumétrique des détecteurs. À cet effet, l'IPHC a développé une table de scan qui utilise la technique Pulse Shape Comparison Scan (PSCS). Des simulations sont réalisées pour quantifier la précision de la technique PSCS et pour la valider. Elles sont appliquées sur un détecteur planaire pixelisé 3x3 et sur un détecteur symétrique d'AGATA de type S. La méthode est testée avec plusieurs énergies de rayons gamma et diverses statistiques d'entrée. Des scans réels sont aussi entrepris sur les deux détecteurs, qui sont totalement caractérisés. En particulier, un scan réalisé pour la première fois avec une source de rayons gamma de 152Eu, prouve la validité de certaines hypothèses sur lesquelles repose la technique de trackingNew generation gamma-ray detectors arrays, such as AGATA, employ multi-segmented high purity germanium detectors in experiments of nuclear physics that require high resolution and efficiency which are obtained thanks to the application of pulse-shape analysis and gamma-ray tracking. These techniques require full volume characterization of the position sensitive detectors. The IPHC developed a scanning table that uses the Pulse Shape Comparison Scan (PSCS) technique to perform this task. Simulations are performed to quantify the accuracy of the PSCS and to validate it.They are applied on a pixelated 3x3 planar detector and a symmetrical S-type AGATA detector. The method is tested with different gamma-ray energies and input statistics. Several real scans are performed as well on both detectors, which are fully characterized. In particular a scan with agamma-ray source of 152Eu, the first ever done, prove some assumptions on which the tracking technique is based
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Tsai-MeiHu and 胡采梅. "Contactless Power Array Track with Segment-excited Overlapping-circle Inductive Coupled Structure." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/g36nu8.
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碩士國立成功大學
電機工程學系
104
This thesis is aimed to utilize the technology of contactless power transmission and implement contactless power array track with segment -excited overlapping-circle inductive coupled structure for power supply of public transportation. First, to improve the stability of power transmission for moving EVs, overlapping-circle inductive coupled structure array is used to provide a uniform distribution of magnetic field. Second, to raise efficiency of overall system, we designed that segment-excited array track controlled by MCU. After that, the transmitting ability is improved by analyzing resonant circuit. Moreover, overlapping-circle inductive coupled structure array is proposed to provide a smooth magnetic field. Proper parameters of coils and lapping way are decided based on magnetic simulation results, so as to increase tolerance of vertical and horizontal offset for EVs on the power track. Based on the experimental results with 15-cm distance, the maximum efficiency comes up to 89.9% with 360-W output power, and the maximum output power of overall system is 759 W with efficiency of 82.95%.
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Chang, Ruey-Shyan, and 張瑞賢. "Characteristics Study of Multi-Segment RF-excited CO2 Slab Waveguide and its Array Lasers." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/99590407958505736142.
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博士國立清華大學
電機工程學系
89
Abstract Electrical discharge is a common method for the excitation of a gas laser. The RF excitation especially has outstanding performance for uniform discharge. The discharge tube has the characteristic of capacitive loading due to the property of the ion sheath. Without the existence of the ballast resistor, the discharge can still be maintained stably and efficiently. The RF excitation accommodates more input power level than the DC discharge. The operating pressure of the gas can be raised and the laser power will be increased accordingly. With the superior performance mentioned above, the RF excitation still has many advantages such as the lower firing voltage, the electrodeless operation to avoid the sputtering pollution and so on. The standing wave effect in the RF excitation causes the voltage to distribute nonuniformly along the longitudinal electrodes. Segmented excitation can improve the uniformity of the discharge and enhance the laser efficiency. The segmented discharge used in our experiments has the advantages such as uniform discharge, easy power transform to the load, less ohm loss in matching circuit. Reliable components and compact elements make the entire setup more efficient and lower coat. The large area discharge (area-scaling) and the arrayed structure (volume-scaling) have been developed to increase the laser power per unit length. The characteristics of multi-segment RF-excited CO2 slab waveguide and its array lasers with effects of additional xenon gas have been investigated in this thesis. The laser efficiency of 20.5% with 10% xenon is obtained in multi-segmented slab waveguide laser. And in the segmented coupled slab waveguide array, the efficiency is 19.5% with 10% xenon. The efficiency of our segmented structures is superior to the others. The segmented laser structure has shown to be suitable for the RF excitation of CO2 and other gas lasers.
Books on the topic "Array segment"
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Fallah, Bahram. Time-driven routing and segment length assignment in field-programmable gate arrays. 1992, 1992.
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Easterbrooks, Susan R., and Hannah M. Dostal, eds. The Oxford Handbook of Deaf Studies in Literacy. Oxford University Press, 2020. http://dx.doi.org/10.1093/oxfordhb/9780197508268.001.0001.
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The Oxford Handbook on Deaf Studies Series began in 2010 with it first volume. The series presents state-of-the-art information across an array of topics pertinent to deaf individuals and deaf learners, such as cognition, neuroscience, attention, memory, learning, and language. The present handbook, The Oxford Handbook of Deaf Studies in Literacy, is the fifth in the series, and it offers the most up-to-date information on literacy learning among deaf and hard-of-hearing (DHH) learners. Topic examined in this concise volume include the importance of language and cognition and the elements of phonological/orthographic awareness, morphosyntactic and vocabulary understanding, reading comprehension and classroom engagement, written language, learning among challenged populations, and the need to rethink our approaches to literacy research. With contributions from a well-known and highly respected field of educators and researchers, the volume will help all involved see the path each DHH child as an individual must follow if he or she is to unlock the vast world available when one has competence in reading comprehension. Too often, sweeping generalizations are made about all DHH readers—no matter their background, language(s), chosen modality(ies), and experience—from data on only a small segment of the overall population. Therefore, the editors collaborated with the authors to ensure that authors were clear about the research participants cited when making claims about specific subpopulations. This means readers can be relatively certain that statements made in this book about certain subpopulations in fact are based on data from those subpopulations.
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Metcalf, Michael, John Reid, and Malcolm Cohen. Coarrays. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198811893.003.0017.
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We describe the coarray programming model, which provides a simple syntactic extension from the point of view of both work distribution and data distribution. For work distribution, it adopts the single program multiple data (SPMD) programming model, with multiple ‘images’ (usually processes) executing identical programs. For data distribution it allows each image to access data on another image with coarray syntax that is similar to Fortran array syntax. The programmer is responsible for subdividing the executions on the images into segments within each of which the compiler is free to use its optimization techniques as if the image were executing on its own. We explain the special statements known as ‘image control statements’ that allow the programmer to achieve this.
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Li, Jing, and Xiao-Ying Huang. Nanostructured crystals: An unprecedented class of hybrid semiconductors exhibiting structure-induced quantum confinement effect and systematically tunable properties. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.16.
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This article describes the structure-induced quantum confinement effect in nanostructured crystals, a unique class of hybrid semiconductors that incorporate organic and inorganic components into a single-crystal lattice via covalent (coordinative) bonds to form extended one-, two- and three-dimensional network structures. These structures are comprised of subnanometer-sized II-VI semiconductor segments (inorganic component) and amine molecules (organic component) arranged into perfectly ordered arrays. The article first provides an overview of II-VI and III-V semiconductors, II-VI colloidal quantum dots, inorganic-organic hybrid materials before discussing the design and synthesis of I-VI-based inorganic-organic hybrid nanostructures. It also considers the crystal structures, quantum confinement effect, bandgaps, and optical properties, thermal properties, thermal expansion behavior of nanostructured crystals.
Book chapters on the topic "Array segment"
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Mehta, Ajay Kumar. "Dynamic Segment Array and Search." In Algorithms for Intelligent Systems, 489–98. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5077-5_44.
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Bojesen, Jesper, and Jyrki Katajainen. "Interchanging Tw Segments of an Array in a Hierarchical Memory System." In Algorithm Engineering, 159–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-44691-5_14.
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Liu, Zhen, Tim Foresman, John van Genderen, and Lizhe Wang. "Understanding Digital Earth." In Manual of Digital Earth, 1–21. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9915-3_1.
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Abstract In the two decades since the debut of the Digital Earth (DE) vision, a concerted international effort has engaged in nurturing the development of a technology framework and harnessing applications to preserve the planet and sustain human societies. Evolutionary threads can be traced to key historic and multidisciplinary foundations, which were presciently articulated and represented at the first International Symposium on Digital Earth hosted by the Chinese Academy of Sciences in 1999. Pioneering groups in government, industry, and academia have cultivated this fertile futuristic conceptual model with technological incubation and exploratory applications. An array of space-age developments in computers, the internet and communications, Earth observation satellites, and spatially oriented applications sparked an innovative discipline. The Beijing Declaration on Digital Earth is recognized for its role in promulgating the series of International Symposia on Digital Earth to promote understanding of the impacts of DE technology and applications on behalf of humankind. Combinations of industrial, academic, and government organizations have rapidly advanced the technological components necessary for implementing the DE vision. Commercial leaders such as Google have accelerated the influence of DE for large segments of society. Challenges remain regarding requisite collaboration on international standards to optimize and accelerate DE implementation scenarios. This chapter provides an overview of the DE initiative and basic framework, the global response to DE, the evolution of DE, its relationship to key global science initiatives, and the response to global challenges.
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Korstanje, Maximiliano Emanuel. "The Lost Paradise." In Global Perspectives on Religious Tourism and Pilgrimage, 129–41. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2796-1.ch008.
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A vast array of studies focuses on religious tourism as the promising segment of tourism growth for next decades, this is a really prominent theme concerns many scholars today. However, our chapter is on the opposite direction, tourism is an expression of religiosity enrooted in Western Culture. this chapter explores the religiosity of tourism in order to expand the current understanding we have of this complex phenomenon. Far from representing a radical critique to some scholars or some position, this chapter aims to become in a contribution to expand the current paradigms in tourism-led research.
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Matilda S. "Big Data in Social Media Environment." In Social Media Listening and Monitoring for Business Applications, 70–93. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0846-5.ch004.
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Information technology has reached its pinnacle, with the era being dominated by two hi-tech driving forces - Big data and Social media. Big data encompasses a wide array of data mining workloads, extracted through various sources, the results of which are of keen interest to business leaders and analysts across every industry segment. Data from the social media is exploding at an exponential rate and is being hailed as the key, to crucial insights into human behavior. Extracting intelligent information from such immense volume, variety and velocity of data, in context to the business requirement is the need of the hour. Therefore, new tools and methods specialized for big data analytics is crucial, along with the architectures for managing and processing such data. Big data complemented with Social Media offers a new horizon to take management practice to an advanced level.
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Schram, Frederick R., and Stefan Koenemann. "Anostraca." In Evolution and Phylogeny of Pancrustacea, 627–44. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780195365764.003.0042.
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Anostraca range up to approximately 15 cm maximum length (although typically only 1–3 cm on average). Their body includes a shieldless cephalon with prominent stalked compound eyes; large antennae modified as claspers in males; a 12-segment thorax with Hox gene expression and an array of leaf-like appendages; and a thin limbless abdomen with no Hox expression. Many anostracans bear an “antennal appendage” arising at the base of the antennae that occurs only in males and can be incredibly elaborate. The maxillules and especially the maxillae are frequently better developed in the larvae than in adults, in which they are greatly reduced—a distinctive feature of Branchiopoda. Anostracans inhabit brine pools, temporary melt waters, vernal pools, or floodwater catchments—places that are transient in nature, isolated, and with a lack of major food competitors. Anostraca as a sister group to the phyllopod branchiopods has obtained wide support.
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L. Yurchenko, Alexander, and Maria O. Zamulina. "Basic Tools and Techniques for Assessing Strength and General Endurance." In Contemporary Advances in Sports Science. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96993.
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The desire of more and more segments of the population for self-improvement and self-expression through amateur sports has acquired a global scale. The evaluation and analysis of the amateur athletes’ achievements in the chosen physical activity become of practical importance for most amateur athletes and open up the possibility of developing innovative interventions to stimulate the engagement in physical activity of as much population as possible. For this purpose, we have developed an elementary methodology for monitoring the achieved level of strength and overall endurance of students, designed to monitor and motivate amateur athletes of various types of physical activity. The purpose of this research project was to conduct the targeted analysis of the array of physiological indicators of those engaged in physical activity, and also to justify and test technologies for collecting and interpreting objective indicators of performing elementary physical test exercises and calculating their dependence on objective indicators of the cardiovascular system. Subsequently, we planned to develop a simple methodology for collecting, evaluating, and interpreting test information. We suggest using this technique in the daily training sessions of amateur athletes of various qualifications.
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Gardner, Caleb, Reginald A. Watson, Anes Dwi Jayanti, Suadi, Mohsen AlHusaini, and Gordon H. Kruse. "Crustaceans as Fisheries Resources: General Overview." In Fisheries and Aquaculture, 2–20. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190865627.003.0001.
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Much of the biological and other research efforts on crustaceans have been driven by their importance to humans as a food source. Production comes from a diverse array of methods and scales of extraction, from small recreational or subsistence fisheries to industrial-scale operations. Most crustacean catch comes from shrimp fisheries, with over two million tons taken in 2014, mainly by trawl. The genera Acetes, Fenneropenaeus, and Pandalus account for around three quarters of this catch. Crab, krill, and lobster are the other main crustacean products (around 600,000 t crab, 380,000 t krill, and 300,000 t lobster in 2014). Trends in crustacean fisheries are broadly similar to those of other seafood, although crustaceans often target different market segments and receive higher prices than fish. Crustacean fisheries management faces many challenges with management of bycatch from trawl gears especially significant. Fortunately, crustaceans tend to be easily handled with low discard mortality, and this has enabled widespread use of regulations based on size, maturity, or sex (e.g., male-only fisheries). Total allowable catch (TAC) limits are widely used and highly effective for ensuring sustainable harvests when set responsibly using good information. TAC systems are often combined with catch share or individual transferable quota systems, which had a mixed history in crustaceans, sometimes reducing overall community benefit. This parallels the challenge facing fisheries globally of ensuring that harvests are not only sustainable but also deliver benefits to the wider community beyond the commercial fishers; management of some crustacean fisheries is at the forefront of these developments.
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Ajmal Khan, M., and Yasuaki Ishikawa. "Indium (In)-Catalyzed Silicon Nanowires (Si NWs) Grown by the Vapor–Liquid–Solid (VLS) Mode for Nanoscale Device Applications." In Nanowires - Recent Progress. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97723.
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Stacking fault free and planar defects (twin plane) free catalyzed Si nanowires (Si NWs) is essential for the carrier transport in the nanoscale devices applications. In this chapter, In-catalyzed, vertically aligned and cone-shaped Si NWs arrays were grown by using vapor–liquid–solid (VLS) mode on Si (111) substrates. We have successfully controlled the verticality and (111)-orientation of Si NWs as well as scaled down the diameter to 18 nm. The density of Si NWs was also enhanced from 2.5 μm−2 to 70 μm−2. Such vertically aligned, (111)-oriented p-type Si NWs are very important for the nanoscale device applications including Si NWs/c-Si tandem solar cells and p-Si NWs/n-InGaZnO Heterojunction LEDs. Next, the influence of substrate growth temperature (TS), cooling rate (∆TS/∆𝑡) on the formation of planar defects, twining along [112] direction and stacking fault in Si NWs perpendicular to (111)-orientation were deeply investigated. Finally, one simple model was proposed to explain the formation of stacking fault, twining of planar defects in perpendicular direction to the axial growth direction of Si NWs. When the TS was decreased from 600°C with the cooling rate of 100°C/240 sec to room temperature (RT) after Si NWs growth then the twin planar defects perpendicular to the substrate and along different segments of (111)-oriented Si NWs were observed.
Conference papers on the topic "Array segment"
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Hough, Jessandra, Ryan S. McGinnis, and N. C. Perkins. "Benchmarking the Accuracy of Inertial Measurement Units for Estimating Kinetic Energy." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63303.
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The energetics of human motion has been intensely studied using experimental and theoretical methods. Knowing the kinetic energy of the human body, and its decomposition into the kinetic energies of the major body segments, has tremendous value in applications ranging from physical therapy, athlete training, soldier performance, worker health and safety, among other uses. Significant challenges thwart our ability to measure segmental kinetic energy in real (non-laboratory) environments such as in the home or workplace, or on the playing/training field. The aim of this research is to address these challenges by advancing the use of an array of miniaturized body-worn inertial measurement units (IMUs) for estimating segmental kinetic energy. As a step towards this goal, this study reports a benchmark experiment that demonstrates the accuracy of IMU-derived estimates of segmental kinetic energy. The study is conducted on a well-characterized mechanical system, a double pendulum that also serves as an apt model for the lower or upper extremities. A two-node IMU array is used to measure the kinematics of each segment as input to the segmental kinetic energy computations. The segments are also instrumented with two high-precision optical encoders that provide the truth data for kinetic energy. The segmental kinetic energies estimated using the IMU array remain within 3.5% and 3.9% of the kinetic energies measured by the optical encoders for the top and bottom segments, respectively, for the freely decaying pendulum oscillations considered. These promising results support the future development of body-worn IMU arrays for real-time estimates of segmental kinetic energy for health, sports and military applications.
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Busuioc, D., M. Shahabadi, A. Borji, and S. Safavi-Naeini. "G/T of multi-segment active arrays - dependence on array configuration." In IEEE Antennas and Propagation Society Symposium, 2004. IEEE, 2004. http://dx.doi.org/10.1109/aps.2004.1329571.
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Chengcheng Li and Hong Wu. "Study of segment dictionary based on two-dimensional array." In Multimedia Technology (IC-BNMT 2010). IEEE, 2010. http://dx.doi.org/10.1109/icbnmt.2010.5705175.
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Sumali, Hartono, and Harley Cudney. "Segmented Two-Dimensional Modal-Filtering Sensors." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0221.
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Abstract This paper discusses the development of a method to create modal coordinate sensors on two-dimensional structures. The sensor, which is made of a piezoelectric layer, is divided into an array of segments. The total output of the sensor is the weighted sum of the outputs of the segments. The purpose of this segmentation is to bypass the requirement for a continuous spatial variation of polarization, which is necessary in creating an ideal two-dimensional modal sensor but infeasible in practice and unworkable for most boundary conditions. Analytical simulation on a simply-supported plate shows that the performance of a modal sensor created by configuring a segmented sensor approaches that of an ideal modal sensor. Modal filtering effects increase with the decrease in the segment size.
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Ain, Mohd Fadzil Bin, Ubaid Ullah, Seyi Stephen Olokede, and ZainalArifin Ahmad. "Dual-segment corporate feed four elements array antenna for broadband application." In 2012 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP). IEEE, 2012. http://dx.doi.org/10.1109/apcap.2012.6333231.
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Guo, Jianqiang, Lin Chen, Yu Zhang, Kai Yang, Jinlong Li, and Xiaorong Gao. "Method of ultrasonic phased array imaging based on segment amplitude apodization." In 2013 Far East Forum on Nondestructive Evaluation/Testing: New Technology & Application (FENDT). IEEE, 2013. http://dx.doi.org/10.1109/fendt.2013.6635552.
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Merčep, Elena, Neal C. Burton, Xosé Luís Deán-Ben, and Daniel Razansky. "Multi-segment detector array for hybrid reflection-mode ultrasound and optoacoustic tomography (Conference Presentation)." In Multimodal Biomedical Imaging XII, edited by Fred S. Azar and Xavier Intes. SPIE, 2017. http://dx.doi.org/10.1117/12.2251170.
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Lee, Jia-You, Chih-Yi Liao, and Ming-Han Tsai. "Design and Implementation of Contactless Power Array Track with Segment-excited Inductively Coupled Structure." In 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC). IEEE, 2018. http://dx.doi.org/10.1109/peac.2018.8590297.
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Das, Gourab, Anand Sharma, and Ravi Kumar Gangwar. "Two elements dual segment cylindrical dielectric resonator antenna array with annular shaped microstrip feed." In 2016 Twenty Second National Conference on Communication (NCC). IEEE, 2016. http://dx.doi.org/10.1109/ncc.2016.7561168.
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Palunas, Povilas, James R. Fowler, John A. Booth, George Damm, and Greg H. Ames. "Control of the Hobby-Eberly Telescope primary mirror array with the segment alignment maintenance system." In SPIE Astronomical Telescopes + Instrumentation. SPIE, 2004. http://dx.doi.org/10.1117/12.552410.
Full textReports on the topic "Array segment"
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Dr. Ethan L. Hull. Segmented Monolithic Germanium Detector Arrays for X-ray Absorption Spectroscopy. Office of Scientific and Technical Information (OSTI), March 2011. http://dx.doi.org/10.2172/937096.
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Erlandson, A., H. Powell, and R. McCracken. Measurements of the radiant efficiency of the flashlamp arrays used in the multi-segment amplifier (MSA). Office of Scientific and Technical Information (OSTI), May 1990. http://dx.doi.org/10.2172/7051214.
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Joel, Daniel M., Steven J. Knapp, and Yaakov Tadmor. Genomic Approaches for Understanding Virulence and Resistance in the Sunflower-Orobanche Host-Parasite Interaction. United States Department of Agriculture, August 2011. http://dx.doi.org/10.32747/2011.7592655.bard.
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Oroginal Objectives: (i) identify DNA markers linked to the avirulence (Avr) locus and locate the Avr locus through genetic mapping with an inter-race Orobanche cumana population; (ii) develop high-throughput fingerprint DNA markers for genotypingO. cumana races; (iii) identify nucleotide binding domain leucine rich repeat (NB-LRR) genes encoding R proteins conferring resistance to O. cumana in sunflower; (iv) increase the resolution of the chromosomal segment harboring Or₅ and related R genes through genetic and physical mapping in previously and newly developed mapping populations of sunflower; and (v) develop high-throughput DNA markers for rapidly and efficiently identifying and transferring sunflower R genes through marker-assisted selection. Revisions made during the course of project: Following changes in O. cumana race distribution in Israel, the newly arrived virulent race H was chosen for further analysis. HA412-HO, which was primarily chosen as a susceptible sunflower cultivar, was more resistant to the new parasite populations than var. Shemesh, thus we shifted sunflower research into analyzing the resistance of HA412-HO. We exceeded the deliverables for Objectives #3-5 by securing funding for complete physical and high-density genetic mapping of the sunflower genome, in addition to producing a complete draft sequence of the sunflower genome. We discovered limited diversity between the parents of the O. cumana population developed for the mapping study. Hence, the developed DNA marker resources were insufficient to support genetic map construction. This objective was beyond the scale and scope of the funding. This objective is challenging enough to be the entire focus of follow up studies. Background to the topic: O. cumana, an obligate parasitic weed, is one of the most economically important and damaging diseases of sunflower, causes significant yield losses in susceptible genotypes, and threatens production in Israel and many other countries. Breeding for resistance has been crucial for protecting sunflower from O. cumana, and problematic because new races of the pathogen continually emerge, necessitating discovery and deployment of new R genes. The process is challenging because of the uncertainty in identifying races in a genetically diverse parasite. Major conclusions, solutions, achievements: We developed a small collection of SSR markers for genetic mapping in O. cumana and completed a diversity study to lay the ground for objective #1. Because DNA sequencing and SNPgenotyping technology dramatically advanced during the course of the study, we recommend shifting future work to SNP discovery and mapping using array-based approaches, instead of SSR markers. We completed a pilot study using a 96-SNP array, but it was not large enough to support genetic mapping in O.cumana. The development of further SNPs was beyond the scope of the grant. However, the collection of SSR markers was ideal for genetic diversity analysis, which indicated that O. cumanapopulations in Israel considerably differ frompopulations in other Mediterranean countries. We supplied physical and genetic mapping resources for identifying R-genes in sunflower responsible for resistance to O. cumana. Several thousand mapped SNP markers and a complete draft of the sunflower genome sequence are powerful tools for identifying additional candidate genes and understanding the genomic architecture of O. cumana-resistanceanddisease-resistance genes. Implications: The OrobancheSSR markers have utility in sunflower breeding and genetics programs, as well as a tool for understanding the heterogeneity of races in the field and for geographically mapping of pathotypes.The segregating populations of both Orobanche and sunflower hybrids are now available for QTL analyses.
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Furuta, Naoki, K. R. Brushwyler, and Gary M. Hieftje. Flow-Injection Analysis Utilizing a Spectrally Segmented Photodiode- Array Inductively Coupled Plasma Emission Spectrometer 1. Microcolumn Preconcentration for the Determination of Molybdenum. Fort Belvoir, VA: Defense Technical Information Center, February 1989. http://dx.doi.org/10.21236/ada205687.
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Tobias, Benjamin John. A parameterized ray-tracing model for evaluation of hemispherical lensing of a uniform, telecentric object aperture -- performance improvement estimates for segmented scintillators with miniature lens arrays. Office of Scientific and Technical Information (OSTI), April 2018. http://dx.doi.org/10.2172/1431105.
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