Bibliografías temáticas / 70E17

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Literatura académica sobre el tema "70E17"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 31 de enero de 2023

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Artículos de revistas sobre el tema "70E17"

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Goggins, J. R. "70.17 Perimeter Bisectors". Mathematical Gazette 70, n.º 452 (junio de 1986): 133. http://dx.doi.org/10.2307/3615775.

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Wuaten, Julius F., Emil Reppie y Ivor L. Labaro. "KAJIAN PERIKANAN TANGKAP IKAN JULUNG-JULUNG (Hyporhamphus affinis) DI PERAIRAN KABUPATEN KEPULAUAN SANGIHE". JURNAL PERIKANAN DAN KELAUTAN TROPIS 7, n.º 2 (31 de agosto de 2011): 80. http://dx.doi.org/10.35800/jpkt.7.2.2011.183.

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ABSTRACTThe objective of this research was to predict maximum sustainable yield of garfish resources in the waters of Sangihe Islands District; to analyze the fishing season of garfish; to map the location of coral reef expected to be a breeding ground of garfish; and to assess the biological, economic, social and environmental aspects of garfish in Sangihe Island district. Garfish maximum sustainable yield was calculated at about 70 tons/year with a maximum effort of 3,613.71 trips. Fishing season of garfish was very dependent on wind direction and speed throughout the year. The percentage of live coral cover at a depth of 5 meters was 56.16-70.17% and a depth of 3 meters was 44.33-83.75%. The ratio of male and female sexes was 35.92-64.07%. Based on length-weight analysis of the garfish growth was classified allometric with a length of 16.7-20.7 cm and weighs between 35-55 g. The financial analysis of garfish fisheries in this area showed that the of Benefit Investment ratio was 1.19 and the Benefit Cost ratio was about 0.94.ABSTRAKTujuan dari penelitian ini adalah untuk memprediksi pemanfaatan maksimum sumberdaya lestari pada ikan julung-julung di perairan Kabupaten Kepulauan Sangihe; untuk menganalisis musim penangkapan ikan tersebut, memetakan lokasi terumbu karang diharapkan dapat menjadi tempat berkembang biak dari julung-julung, serta menilai aspek biologi, ekonomi, sosial dan lingkungan di kabupaten Pulau Sangihe. Pemanfaatan maksimum sumberdaya lestari ikan julung-julung dihitung sekitar 70 ton/tahun dengan upaya maksimal 3.613,71 trip. Musim penangkapan garfish sangat tergantung pada arah dan kecepatan angin sepanjang tahun. Persentase penutupan karang hidup pada kedalaman 5 meter adalah 56,16-70,17% dan kedalaman 3 meter adalah 44,33-83,75%. Rasio jenis kelamin jantan dan betina adalah 35,92-64,07%. Berdasarkan analisis pertumbuhan panjang-berat garfish diklasifikasikan alometrik dengan panjang 16,7-20,7 cm dan berat antara 35-55 g. Hasil analisis keuangan perikanan garfish di Sangihe Kabupaten menunjukkan bahwa rasio Manfaat Investasi adalah 1,19 dan rasio Biaya Manfaat sekitar 0,94.
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Lyamlahy, Khalid. "Histoire de l’immigration algérienne en France, Emmanuel Blanchard (2018)". International Journal of Francophone Studies 24, n.º 3 (1 de diciembre de 2021): 299–302. http://dx.doi.org/10.1386/ijfs_00035_5.

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Gao, Jingzi y Joohwan Suh. "Analysis of Landscape Characteristics in Seoullo 7017". Journal of East Asian Landscape Studies 15, n.º 1 (31 de marzo de 2021): 55–64. http://dx.doi.org/10.51549/joral.2021.15.1.055.

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Akkurt, Mehmet, Shaaban K. Mohamed, Joel T. Mague, Mustafa R. Albayati y Sabry H. H. Younes. "N′-[(E)-(Furan-2-yl)methylidene]-2-[4-(2-methylpropyl)phenyl]propanohydrazide". Acta Crystallographica Section E Structure Reports Online 70, n.º 3 (26 de febrero de 2014): o356. http://dx.doi.org/10.1107/s1600536814003936.

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In the title molecule, C18H22N2O2, the furan and benzene rings form a dihedral angle of 70.17 (14)°. In the crystal, strong N—H...O and weak C—H...O hydrogen bonds link the molecules into chains running parallel to [010].
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Möller, Heinrich y Gonasagren Govender. "The Heat Treatment of Rheo-High Pressure Die Cast Al-Zn-Mg Alloy 7017". Solid State Phenomena 192-193 (octubre de 2012): 155–60. http://dx.doi.org/10.4028/www.scientific.net/ssp.192-193.155.

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The CSIR rheocasting system was successfully used to produce high pressure die cast plates of medium-strength, weldable, wrought Al-Zn-Mg alloy 7017. A solution treatment at 450oC for 5 h leads to insufficient dissolution of Mg and Zn, resulting in inadequate T6 mechanical properties after artificial aging. However, a solution treatment at 470oC for 5 h, followed by water quenching and artificial aging at 120oC for 24 h results in tensile properties comparable to those of wrought alloy 7017 plate and extrusions. The alloy also shows a strong room temperature aging response, making it ideal to be used after welding without any further heat treatment.
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Alhudhud, M., S. Sadiq, H. N. Ngo, C. Hidalgo-Cantabrana, P. Ruas-Madiedo, D. van Sinderen, P. N. Humphreys y A. P. Laws. "Extraction of the same novel homoglycan mixture from two different strains of Bifidobacterium animalis and three strains of Bifidobacterium breve". Beneficial Microbes 9, n.º 4 (15 de junio de 2018): 663–74. http://dx.doi.org/10.3920/bm2017.0145.

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Three strains of Bifidobacterium breve (JCM 7017, JCM 7019 and JCM 2258) and two strains of Bifidobacterium animalis subsp. lactis (AD011 and A1dOxR) were grown in broth cultures or on plates, and a standard exopolysaccharide extraction method was used in an attempt to recover exocellular polysaccharides. When the extracted materials were analysed by NMR it was clear that mixtures of polysaccharides were being isolated including exopolysaccharides (EPS) cell wall polysaccharides and intracellular polysaccharides. Treatment of the cell biomass from the B. breve strains, or the B. animalis subsp. lactis AD011 strain, with aqueous sodium hydroxide provided a very similar mixture of polysaccharides but without the EPS. The different polysaccharides were partially fractionated by selective precipitation from an aqueous solution upon the addition of increasing percentages of ethanol. The polysaccharides extracted from B. breve JCM 7017 grown in HBM media supplemented with glucose (or isotopically labelled D-glucose-1-13C) were characterised using 1D and 2D-NMR spectroscopy. Addition of one volume of ethanol generated a medium molecular weight glycogen (Mw=1×105 Da, yield 200 mg/l). The addition of two volumes of ethanol precipitated an intimate mixture of a low molecular weight β-(1→6)-glucan and a low molecular weight β-(1→6)-galactofuranan which could not be separated (combined yield 46 mg/l). When labelled D-glucose-1-13C was used as a carbon supplement, the label was incorporated into >95% of the anomeric carbons of each polysaccharide confirming they were being synthesised in situ. Similar 1H NMR profiles were obtained for polysaccharides recovered from the cells of B. animalis subsp. lactis AD011and A1dOxR (in combination with an EPS), B. breve JCM 7017, B. breve JCM 7019, B. breve JCM 2258 and from an EPS (-ve) mutant of B. breve 7017 (a non-EPS producer).
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Wernisch, Martin. "Recenze: Amedeo Molnár: Theologia crucis. (Nedokončené přednášky z let 1989–90), k tisku připravil Ota Halama, Praha: Kalich, 2018, 211 stran, ISBN 978-80-7017-258-2". TEOLOGICKÁ REFLEXE 27, n.º 2 (1 de noviembre de 2021): 201–17. http://dx.doi.org/10.14712/27880796.2021.2.14.

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Priantono, Agus. "Penerapan Model Pembelajaran Kontekstual untuk Meningkatkan Pemahaman Materi Bangun Ruang Sisi Lengkung". Edudikara: Jurnal Pendidikan dan Pembelajaran 6, n.º 1 (30 de marzo de 2021): 35–44. http://dx.doi.org/10.32585/edudikara.v6i1.229.

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Penelitian ini bertujuan untuk mendeskripsikan penerapan pembelajaran kontekstual dalam meningkatkan pemahaman siswa pada materi bangun ruang sisi lengkung. Penelitian tindakan kelas (PTK) ini laksanakan dalam tiga siklus dengan setiap siklus dilakukan observasi terhadap aktivitas guru dan siswa selama pembelajaran, serta dilakukan evaluasi. Hasil penelitian menunjukkan bahwa penggunaan model pembelajaran kontekstual dapat meningkatkan pemahaman siswa kelas IX C tahun pelajaran 2019/2020 dalam mempelajari materi bangun ruang sisi lengkung. Hasil analisis data pada tiga siklus, dari 35 siswa yang mencapai ketuntasan belajar pada pra siklus sebanyak 6 siswa ( 17,14 % ) dengan skor rata-rata 69,3 , siklus I sebanyak 9 siswa (25,71%) dengan skor rata-rata 70,17, siswa yang mencapai ketuntasan belajar pada siklus II sebanyak 24 siswa (68,57%) dengan skor rata-rata 70,86 atau terjadi peningkatan sebesar 42,85 % dari siklus I, dan siklus III terdapat 34 (97,14%) siswa mencapai ketuntasan belajar dengan skor rata-rata 79,06 atau terjadi peningkatan sebesar 71,43 % dari siklus I. Peningkatan pemahaman siswa pada materi bangun ruang sisi lengkung melalui pembelajaran kontekstual secara klasikal tergolong tinggi. APPLICATION OF CONTEXTUAL LEARNING MODELS TO IMPROVE UNDERSTANDING OF CONTACT SIDE BUILDING MATERIALS Agus Priantono SMP Negeri 16 Semarang City Email: lemendreas@gmail.com Abstract This study aims to describe the application of contextual learning in improving students' understanding of the curved side space building material. This classroom action research (CAR) was carried out in three cycles, with each cycle observing teacher and student activities during learning, and evaluating. The results showed that the use of a contextual learning model could improve students' understanding of class IX C for the 2019/2020 academic year in studying the curved side of the building material. The results of data analysis in three cycles, of the 35 students who achieved learning completeness in the pre-cycle were 6 students (17.14%) with an average score of 69.3, in the first cycle there were 9 students (25.71%) with an average score an average of 70.17, students who achieved learning completeness in cycle II were 24 students (68.57%) with an average score of 70.86 or an increase of 42.85% from cycle I, and cycle III there were 34 (97, 14%) students achieved mastery learning with an average score of 79.06 or an increase of 71.43% from cycle I. Increasing students' understanding of the curved side of the building material through contextual learning is classically classified as high.
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Abdullahi, Yusuf Zuntu y Sohail Ahmad. "First-principles calculations to investigate the effects of strain, electric field, and atom impurity on the electronic and magnetic properties of RuX2 (X = S, Se) nanosheets". Physical Chemistry Chemical Physics 23, n.º 30 (2021): 16316–23. http://dx.doi.org/10.1039/d1cp01968f.

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An experimental group (Angew. Chem., Int. Ed., 2021, 60, 7013–7017) has recently demonstrated the synthesis of two-dimensional (2D) RuSe2. The bang-gap increases when bi-axial strain increases from −5% to −1% (−5% to 1%) for and then decreases beyond these strain points.
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Tesis sobre el tema "70E17"

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Roaas, Lasse Valland. "Synthesis and Characterization of Hydrogen Transport Membranes". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19418.

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Hydrogen transport membranes have gained interest from industry as an alternative to pressure swing adsorption or cryogenic distillation, and are aimed to reduce cost, equipment size, energy consumption and waste generation. Doped strontium cerate stabilized with zirconium exhibit high proton conductivity and chemical stability and is therefore considered to be a promising material for hydrogen transport membranes.The purpose of the work was to investigate if phase pure strontium cerates, stabilized with zirconium and doped with thulium, ytterbium or yttrium, could be synthesized by the Pechini method, and if the membranes exhibited sufficient density. Determination of optimal calcination and sintering parameters was also important parts in the study.SrCe0.75Zr0.20M0.05O3-d, (M=Tm,Y,Yb) were synthesized via the Pechini method, followed by calcination, pressing of green bodies and sintering of dense membranes. Phase purity of powders and sintered membranes was examined by X-ray diffraction. Surface investigation and microstructure was investigated in a scanning electron microscope. Sintering behavior and thermal expansion coefficients was determined by dilatometry. Phase pure and dense orthorhombic perovskite structured SrCe0.75Zr0.20M0.05O3-d;, (M=Tm,Y,Yb) membranes, were obtained by powder calcination at 1000 C, followed by milling and conventional sintering at 1500-1600 C. SrCe0.75Zr0.20Tm0.05O3-d demonstrated the highest density of 98,6%, when sintered at 1500 C. Sintered membranes had a average grain size in the range from 3,2 – 4,9 um. Ball milling is concluded to be of vital importance to obtain sufficient density in the membranes.The membrane characterization is limited to the methods and techniques described above. Hydrogen flux across the membrane, total conductivity, stability in reducing atmosphere and thorough investigation of thermal properties are recommended for further work.
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2

Procopio, Alessandra. "Biomechanics of the distal radio-ulnar joint: A finite element study (biomeccanica dell'articolazione radio-ulnare distale: Studio agli elementi finiti)". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7017/.

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Il metodo agli elementi finiti è stato utilizzato per valutare la distribuzione dei carichi e delle deformazioni in numerose componenti del corpo umano. L'applicazione di questo metodo ha avuto particolare successo nelle articolazioni con geometria semplice e condizioni di carico ben definite, mentre ha avuto un impatto minore sulla conoscenza della biomeccanica delle articolazioni multi-osso come il polso. Lo scopo di questo lavoro è quello di valutare gli aspetti clinici e biomeccanici dell’articolazione distale radio-ulnare, attraverso l’utilizzo di metodi di modellazione e di analisi agli elementi finiti. Sono stati progettati due modelli 3D a partire da immagini CT, in formato DICOM. Le immagini appartenevano ad un paziente con articolazione sana e ad un paziente con articolazione patologica, in particolare si trattava di una dislocazione ulnare traumatica. Le componenti principali dei modelli presi in considerazione sono stati: radio, ulna, cartilagine, legamento interosso, palmare e distale. Per la realizzazione del radio e dell’ulna sono stati utilizzati i metodi di segmentazione “Thresholding” e “RegionGrowing” sulle immagini e grazie ad operatori morfologici, è stato possibile distinguere l’osso corticale dall’osso spongioso. Successivamente è stata creata la cartilagine presente tra le due ossa, attraverso operazioni di tipo booleano. Invece, i legamenti sono stati realizzati prendendo i punti-nodo del radio e dell’ulna e formando le superfici tra di essi. Per ciascuna di queste componenti, sono state assegnate le corrispondenti proprietà dei materiali. Per migliorare la qualità dei modelli, sono state necessarie operazioni di “Smoothing” e “Autoremesh”. In seguito, è stata eseguita un’analisi agli elementi finiti attraverso l’uso di vincoli e forze, così da simulare il comportamento delle articolazioni. In particolare, sono stati simulati lo stress e la deformazione. Infine, grazie ai risultati ottenuti dalle simulazioni, è stato possibile verificare l’eventuale rischio di frattura in differenti punti anatomici del radio e dell’ulna nell’articolazione sana e patologica.
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Parisi, Candida <1979&gt. "Bone-implant interface. Evaluation of osteoblastic cells behavior on nanopatterned titanium surfaces: an in vitro analysis". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7017/.

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Protein-adsorption occurs immediately following implantation of biomaterials. It is unknown at which extent protein-adsorption impacts the cellular events at bone-implant interface. To investigate this question, we compared the in-vitro outcome of osteoblastic cells grown onto titanium substrates and glass as control, by modulating the exposure to serum-derived proteins. Substrates consisted of 1) polished titanium disks; 2) polished disks nanotextured with H2SO4/H2O2; 3) glass. In the pre-adsorption phase, substrates were treated for 1h with αMEM alone (M-noFBS) or supplemented with 10%-foetal-bovine-serum (M-FBS). MC3T3-osteoblastic-cells were cultured on the pre-treated substrates for 3h and 24h, in M-noFBS and M-FBS. Subsequently, the culture medium was replaced with M-FBS and cultures maintained for 3 and 7days. Cell-number was evaluated by: Alamar-Blue and MTT assay. Mitotic- and osteogenic-activities were evaluated through fluorescence-optical-microscope by immunolabeling for Ki-67 nuclear-protein and Osteopontin. Cellular morphology was evaluated by SEM-imaging. Data were statistically analyzed using ANOVA-test, (p<0.05). At day3 and day7, the presence or absence of serum-derived proteins during the pre-adsorption phase had not significant effect on cell-number. Only the absence of FBS during 24h of culture significantly affected cell-number (p<0.0001). Titanium surfaces performed better than glass, (p<0.01). The growth rate of cells between day3 and 7 was not affected by the initial absence of FBS. Immunolabeling for Ki-67 and Osteopontin showed that the mitotic- and osteogenic- activity were ongoing at 72h. SEM-analysis revealed that the absence of FBS had no major influence on cell-shape. • Physico-chemical interactions without mediation by proteins are sufficient to sustain the initial phase of culture and guide osteogenic-cells toward differentiation. • The challenge is avoiding adsorption of ‘undesirables’ molecules that negatively impact on the cueing cells receive from surface. This may not be a problem in healthy patients, but may have an important role in medically-compromised-individuals in whom the composition of tissue-fluids is altered.
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Elliott, Jayne Louise. "Properties and interactions of type III intermediate filaments with CRYAB". Thesis, Durham University, 2013. http://etheses.dur.ac.uk/7017/.

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Glial fibrillary acidic protein is a type three intermediate filament found within astrocytes in the central nervous system and mutations have been found as the cause of Alexander disease, resulting in protein aggregates of Rosenthal fibers with αBcrystallin. Here two glial fibrillary acidic protein mutants of R79C and R239H, located in the LNDR and rod 2A domain respectively, were assembled in vitro and their morphology, assembly competence and interactions with αB-crystallin were assessed. Both mutants were unable to form usual filament lengths but instead were similar to unit length filaments with R239H forming aggregates due to such high protein interactions and the R79C mutant having much lower assembly competent protein interactions. R239H had a much greater affinity for αB-crystallin, likely a reflection that it has one of the most severe phenotypes. An absence of divalent cations equally affected GFAP assembly resulting in compromised compaction and increased filament-filament interactions. The R120G αB-crystallin mutant results in cardiomyopathy and cataract due to aberrant interactions with desmin intermediate filaments, due to an increased oligomer size and therefore these interactions were studied and compared to wild-type interactions. Temperature and pH also alter the oligomer size of αB-crystallin and were therefore investigated with αB-crystallin-type III intermediate filament interactions. It was found that ischemic conditions and increased temperatures promote their association, demonstrated by increased co-pelleting under high speed sedimentations. There was a preference for binding to desmin filaments thus showing how desmin-wild-type αB-crystallin interactions are important for homeostasis in muscle. Passive microrheology was used to complement this and investigate how αB-crystallin may be modulating desmin filaments under equilibrium. From these experiments wild-type αB-crystallin reduced the frequency-dependent passive viscosity η(f) and the G’, whereas the cardiomyopathy- and cataract- causing R120G mutant increased the η(f).
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5

Hui, Kailin. "Metabolism and host specificity in the Rhizobium leguminosarum species complex". Thesis, University of York, 2014. http://etheses.whiterose.ac.uk/7017/.

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Forming symbiosis with legumes and fixing nitrogen, rhizobia can be ranked among the most ecologically significant bacteria in the world. Two features of rhizobia viz. metabolism and host specificity are important determinants of their growth and their ability to form symbiosis with plants. Investigations of these two features are common in studies conducted using laboratory based experimental and computer based bioinformatics methods. Rhizobium is the largest genus of root-nodulating bacteria. Hence, abundant data can be collected by investigating members of this group. 72 isolates of root-nodule bacteria were collected from a field adjacent to Wentworth College, University of York from plants of genus Vicia and Trifolium; 36 from each. Their metabolic assays showed diversity. Analysis of genome data revealed the presence of five contiguous genes in isolates from Vicia, as well as in the reference strain Rlv. 3841; but absent in the isolates from Trifolium. Limited information was available on the five genes. Work in this thesis promotes our understanding of R. leguminosarum genotype and phenotype. Cross nodulation assays showed that all biovar viciae strains retained their ability to form symbiosis plants of genera Vicia, Pisum and Lathyrus. Metabolic study and celC phylogeny showed that clusters of different species - type strains of R. pisi and R. fabae, and type strains of R. phaseoli and R. etli were closely related to each other. Studies on distribution of the five biovar-specific genes showed that they were widely distributed in biovar viciae strains with one exception – the type strain of R. fabae did not have any of five bvs genes, which suggested these bvs genes were not essential for nodulating Vicia plants. Single gene mutation of the five genes in Rlv. 3841 and subsequent competition nodulation tests suggested that inactivation of the bvs4 and bvs5 genes could lead to decreased competitiveness in mutants as compared to wild type on Vicia sativa, Vicia faba and Pisum sativum plants. Complementation of bvs5 gene restored competitiveness. Enzyme assays for the two genes confirmed the activities described in their annotation viz. aliphatic nitrilase for bvs4 and sulfite oxidase for bvs5. Mutation of bvs4 results in a loss of bvs5¬-encoded enzyme activity, indicating that these two genes are probably in an operon. In conclusion, the study shows that relations among rhizobial strains and species can be observed by studying bacterial metabolism. The work hints at a novel competitive mechanism that requires further investigation.
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6

Super, Margaret P. (Margaret Pillsbury) 1973. "Neighborhood perspectives on suburbia : an exploration on form, identity and meaning in the contemporary suburban landscape". Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/70317.

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Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1999.
Includes bibliographical references (leaves 126-127).
Urban designers, planners and social commentators have argued that the contemporary suburban landscape of isolated subdivisions, office parks, and malls is devoid of identity and meaning. Critics protest the environmental impact of suburban development patterns and the increasing fragmentation of communities; yet Americans continue to locate in the suburbs in increasing numbers. Designers have responded to the problems of suburban sprawl with plans for new self-contained towns, while few proposals have been made for retrofitting existing suburbs. This thesis explores the relationship between spatial structure, perception, and behavior in the contemporary suburban landscape from a neighborhood perspective. Twenty-four interviews were conducted with residents of Lexington and Burlington, two suburban towns in eastern Massachusetts. These towns have similar histories and demographic characteristics but distinctly different patterns of development. Lexington has retained a semi-rural, residential character, while Burlington has developed more of its land and encouraged commercial and industrial uses. In each of the two towns, two contrasting neighborhoods were selected for study. Each of these four neighborhoods represents a different type of development, based on its street system, density, lot sizes, access to open space, and proximity to shops and services. In each of the four neighborhoods, six interviews were conducted using questionnaires, maps and photographs. The interview data from these four neighborhoods, combined with an analysis of existing spatial patterns, suggest that five inter-related themes are important in suburban town and neighborhood design. These themes are i) integrated road networks, ii) visible and accessible open spaces, iii) social town centers, iv) walkable neighborhoods, and v) active front yards. Based on these themes, a set of related principles is proposed for interventions to improve the existing suburban environment.
by Margaret P. Super.
M.C.P.
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Dolhert, Leonard E. "Oxygen diffusion in dislocations and grain boundaries in magnesium oxide". Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/70617.

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Lumpkins, Sarah B. "Space radiation-induced bystander signaling in 2D and 3D skin tissue models". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70817.

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Thesis (Sc. D.)--Harvard-MIT Program in Health Sciences and Technology, 2012.
Page 157 blank. Cataloged from PDF version of thesis.
Includes bibliographical references (p. 145-156).
Space radiation poses a significant hazard to astronauts on long-duration missions, and the low fluences of charged particles characteristic of this field suggest that bystander effects, the phenomenon in which a greater number of cells exhibit damage than expected based on the number of cells traversed by radiation, could be significant contributors to overall cell damage. The purpose of this thesis was to investigate bystander effects due to signaling between different cell types cultured within 2D and 3D tissue architectures. 2D bystander signaling was investigated using a transwell insert system in which normal human fibroblasts (A) and keratinocytes (K) were irradiated with 1 GeV/n protons or iron ions at the NASA Space Radiation Laboratory using doses from either 2 Gy (protons) or 1 Gy (iron ions) down to spacerelevant low fluences. Medium-mediated bystander responses were investigated using three cell signaling combinations. Bystander signaling was also investigated in a 3D model by developing tissue constructs consisting of fibroblasts embedded in a collagen matrix with a keratinocyte epidermal layer. Bystander experiments were conducted by splitting each construct in half and exposing half to radiation then placing the other half in direct contact with the irradiated tissue on a transwell insert. Cell damage was evaluated primarily as formation of foci of the DNA repair-related protein 53BP1. In the 2D system, both protons and iron ions yielded a strong dose dependence for the induction of 53BP1 in irradiated cells, while the magnitudes and time courses of bystander responses were dependent on radiation quality. Furthermore, bystander effects were present in all three cell signaling combinations even at the low proton particle fluences used, suggesting the potential importance of including these effects in cancer risk models for low-dose space radiation exposures. Cells cultured in the 3D constructs exhibited a significant reduction in the percentages of both direct and bystander cells positive for 53BP1 foci, although the qualitative kinetics of DNA damage and repair were similar to those observed in 2D. These results provide evidence that the microenvironment significantly influences intercellular signaling and that cells may be more radioresistant in 3D compared to 2D systems.
by Sarah B. Lumpkins.
Sc.D.
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Yue, Louisa K. (Louisa Ka-Li) 1973. "The location efficient mortgate : a strategy for promoting transit-supportive housing : a case study of San Juan, P.R". Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/70717.

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Yost, Keith A. "Decision analysis for geothermal energy". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70417.

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Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 151).
One of the key impediments to the development of enhanced geothermal systems is a deficiency in the tools available to project planners and developers. Weak tool sets make it difficult to accurately estimate the cost and schedule requirements of a proposed geothermal plant, and thus make it more difficult for those projects to survive an economic decision-making process. This project, part of a larger effort led by the Department of Energy, seeks to develop a suite of decision analysis tools capable of accurately gauging the economic costs and benefits of geothermal projects with uncertain outcomes. In particular. this project seeks to adapt a set of existing tools, the Decision Aids for Tunnelling, to the context of well-drilling, and make them suitable for use as a core software set around which additional software models can be added. We assess the usefulness of the Decision Aids for Tunnelling (DAT) by creating two realistic case studies to serve as proofs of concept. These case studies are then put through analyses designed to reflect project risks to which geothermal wells are vulnerable. We find that the DAT have sufficient flexibility to model geothermal projects accurately and provide cost and schedule distributions on potential outcomes of geothermal projects, and recommend methods of usage appropriate to well drilling scenarios.
by Keith A. Yost..
S.M.in Technology and Policy
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Libros sobre el tema "70E17"

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Giancarlo, Benettin, Henrard J, Kuksin Sergej B. 1955-, Giorgilli Antonio, Centro internazionale matematico estivo y European Mathematical Society, eds. Hamiltonian dynamics theory and applications: Lectures given at the C.I.M.E.-E.M.S. Summer School, held in Cetraro, Italy, July 1-10, 1999. Berlin: Springer, 2005.

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Mat Jizat, Jessnor Arif, Ismail Mohd Khairuddin, Mohd Azraai Mohd Razman, Ahmad Fakhri Ab. Nasir, Mohamad Shaiful Abdul Karim, Abdul Aziz Jaafar, Lim Wei Hong et al., eds. Advances in Robotics, Automation and Data Analytics. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70917-4.

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Bjelde, Joseph Andrew, David Merry y Christopher Roser, eds. Essays on Argumentation in Antiquity. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70817-7.

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Liu, Chaoqun y Yiqian Wang, eds. Liutex and Third Generation of Vortex Definition and Identification. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70217-5.

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Perales, Francisco J. y Robert B. Fisher, eds. Articulated Motion and Deformable Objects. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-70517-8.

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Dvořák, Jiri, Vaclav Dvořák y Werner Schneider, eds. Manual Medicine 1984. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70217-4.

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Weill, Francis S., Edmond Bihr, Paul Rohmer y François Zeltner. Renal Sonography. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-70417-8.

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Neumann, Karl-Hermann, Wolfgang Barz y Ernst Reinhard, eds. Primary and Secondary Metabolism of Plant Cell Cultures. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9.

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Spaar, Dieter, Helmut Kleinhempel y Rolf Fritzsche. Getreide, Mais und Futtergräser. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-70917-3.

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Lutz, Josef, Heinrich Schlangenotto, Uwe Scheuermann y Rik De Doncker. Semiconductor Power Devices. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70917-8.

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Capítulos de libros sobre el tema "70E17"

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Robinson, Tony y Minsun Ji. "Freeway Removal: From Cheonggyecheon to Seoullo 7017". En Sustainable Development Goals Series, 39–71. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13595-8_3.

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Balık, Gökhan y Deniz Balık Lökçe. "Representation, Narrativity, and Banality: Seoullo 7017 Skygarden and Superkilen Urban Park". En Lecture Notes in Civil Engineering, 563–84. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-59743-6_26.

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Steward, F. C. "From Metabolism and Osmotic Work to Totipotency and Morphogenesis: A Study of Limitations Versus Multiple Interactions". En Proceedings in Life Sciences, 1–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_1.

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Wink, M. "Metabolism of Quinolizidine Alkaloids in Plants and Cell Suspension Cultures: Induction and Degradation". En Proceedings in Life Sciences, 107–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_10.

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Roy, S. y A. Kumar. "Production of Alkaloids by Ergot (Claviceps fusiformis Lov.) on Pennisetum typhoides (Burm.) Stapf and Hubb. in Vitro". En Proceedings in Life Sciences, 117–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_11.

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Renaudin, J. P., S. C. Brown y J. Guern. "Compartmentation of Alkaloids in a Cell Suspension of Catharanthus roseus: A Reappraisal of the Role of pH Gradients". En Proceedings in Life Sciences, 124–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_12.

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Petiard, V., C. Baubault, A. Bariaud, M. Hutin y D. Courtois. "Studies on Variability of Plant Tissue Cultures for Alkaloid Production in Catharanthus roseus and Papaver somniferum Callus Cultures". En Proceedings in Life Sciences, 133–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_13.

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Kurz, W. G. W., K. B. Chatson y F. Constabel. "Biosynthesis and Accumulation of Indole Alkaloids in Cell Suspension Cultures of Catharanthus roseus Cultivars". En Proceedings in Life Sciences, 143–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_14.

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Luckner, M. y B. Diettrich. "Formation of Cardenolides in Cell and Organ Cultures of Digitalis lanata". En Proceedings in Life Sciences, 154–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_15.

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Ellis, B. E. "Metabolism of Caffeoyl Derivatives in Plant Cell Cultures". En Proceedings in Life Sciences, 164–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70717-9_16.

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Actas de conferencias sobre el tema "70E17"

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"Front Matter: Volume 7017". En Modeling, Systems Engineering, and Project Management for Astronomy. SPIE, 2008. http://dx.doi.org/10.1117/12.804988.

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Karkalos, Nikolaos E. y Angelos P. Markopoulos. "Prediction of Mechanical Properties of Aluminum Alloy 7017 Using Artificial Neural Networks". En MultiScience - XXXI. microCAD International Multidisciplinary Scientific Conference. University of Miskolc, 2017. http://dx.doi.org/10.26649/musci.2017.089.

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Manela, A. "Effects of Non-Linear Eddy-Airfoil Interaction on the Acoustic Radiation of a Thin Wing". En ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70217.

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We study the combined effect of boundary animation (small-amplitude heaving) and incoming flow unsteadiness (incident vorticity) on the vibroacoustic signature of a thin rigid airfoil in low-Mach high-Reynolds number flow. The nonlinear dynamical problem for the vortex trajectory is studied using potential flow theory. The dynamical description then serves as an effective source term to evaluate the far-field sound using Powell-Howe’s analogy. The results identify the fluid-airfoil system as a dipole-type source, and demonstrate the significance of non-linear eddy-airfoil interaction on the acoustic radiation. At low heaving frequencies (ωa/U < 1, where ω denotes the heaving frequency, 2a the airfoil chord, and U the mean stream speed), the effect of heaving is minor, and the acoustic field can be approximated by neglecting airfoil motion. However, at ωa/U > 1, heaving becomes dominant, radiating sound through an “airfoil motion” dipole (oriented along the direction of heaving) and airfoil-induced oscillations in the vortex trajectory. In contrast with the periodic “airfoil motion” signal, the non-periodic incident vortex sound has a component along the airfoil chord, which becomes significant when the vortex passes close to the airfoil. The work is suggested as a preliminary tool to examine the acoustic radiation during flapping flight at unsteady flow conditions.
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Tajalli, S. A., M. H. Kahrobaiyan, M. Rahaeifard, M. T. Ahmadian, M. R. Movahhedy y J. Akbari. "Mechanical Behavior Analysis of Micro-Scaled Functionally Graded Timoshenko Beams by the Strain Gradient Theory". En ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70317.

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In this paper, a size-dependent formulation is developed for Timoshenko beams made of functionally graded materials (FGM). The developed formulation is based on the strain gradient theory; a non-classical continuum theory able to capture the size-effect in micro-scaled structures. Considering the material length scale parameters of the FG beams vary through the thickness, the new equivalent length scale parameters are proposed as functions of the constituents’ length scale parameters to describe the size-dependent static and dynamic behavior of FG microbeams. The governing differential equations of equilibrium and both classical and non-classical sets of boundary conditions are derived for the proposed strain gradient FG Timoshenko beam using variational approach. As case studies, the static bending deformation of the new model is investigated for an FG simply supported beam made of tungsten/copper (W/Cu) in which properties are varying through the thickness according to a power law. The results of the new model are compared to those of the modified couple stress and the classical theories where the two latter theories are special cases of the strain gradient theory.
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Strozzi, Matteo, Francesco Pellicano y Antonio Zippo. "Nonlinear Vibrations of Functionally Graded Cylindrical Shells: Effect of the Geometry". En ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70417.

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In this paper, the effect of the geometry on the nonlinear vibrations of functionally graded (FGM) cylindrical shells is analyzed. The Sanders-Koiter theory is applied to model the nonlinear dynamics of the system in the case of finite amplitude of vibration. The shell deformation is described in terms of longitudinal, circumferential and radial displacement fields. Simply supported boundary conditions are considered. The displacement fields are expanded by means of a double mixed series based on harmonic functions for the circumferential variable and Chebyshev polynomials for the longitudinal variable. In the linear analysis, after spatial discretization, mass and stiff matrices are computed, natural frequencies and mode shapes of the shell are obtained. In the nonlinear analysis, the three displacement fields are re-expanded by using approximate eigenfunctions obtained by the linear analysis; specific modes are selected. The Lagrange equations reduce nonlinear partial differential equations to a set of ordinary differential equations. Numerical analyses are carried out in order to characterize the nonlinear response of the shell. A convergence analysis is carried out to determine the correct number of the modes to be used. The analysis is focused on determining the nonlinear character of the response as the geometry of the shell varies.
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Chan, Tian, Jürgen Mihm y Manuel Sosa. "A Structured Approach to Identify Styles in Designs". En ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70717.

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This paper introduces a structured approach, based on clustering analysis, to identify groups of visually similar designs (and potentially members of a design style) in a large set of unique designs. We implemented our approach on the population of design patents filed in the USA during the 1976–2010 period. Design patent data is used in our analysis for two reasons: (1) claims of design patents concern the visual aspects of classes of artifacts; (2) similarity between design patents is captured through a tightly controlled citation process. The cluster analysis is based on constructing a similarity index across all pairs of design patents, followed by applying a divisive graph clustering algorithm to organize design patents into a hierarchical tree. Identified clusters of potentially visually similar design patents are tested for positive association against other grouping criteria that are expected to contain similar designs such as design patents filed by the same designer, design patents filed by the same firm, and design patents assigned to the same patent class category. We discuss the implications of our findings for the study of the emergence and evolution of styles in design.
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Shao, Yimin, Pei Wang y Zaigang Chen. "Effect of Waviness on Vibration and Acoustic Features of Rolling Element Bearing". En ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70817.

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Waviness of rolling element bearings, as one of the most concerned factors, would greatly influence the dynamic and acoustic performances of machines. In this paper, a new algorithm of vibro-acoustic coupling, which is based on the displacement mapping method by applying the displacement history obtained from a 6-DOF bearing dynamic model to be as the boundary condition of the finite element model of the bearing housing, is developed to predict the effect of waviness on the vibration and acoustic features of the bearing. The displacement excitation of the circumferential surface of bearing housing can be obtained by vector synthesis of bearing rigid displacement from the 6-DOF bearing dynamic model. This new method enables not only the reduction in computational cost, but also simulation of the bearing waviness under different sizes. A 6308 deep groove ball bearing model with outer race waviness is taken as an example case to examine the effectiveness of the new algorithm. The simulation results show that the new algorithm is able to predict the vibration and acoustic features of the bearing with waviness.
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Ma, Ou, Angel Flores-Abad y Toralf Boge. "Using Industrial Robots for Hardware-in-the-Loop Simulation of Spacecraft Rendezvous and Docking". En ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70917.

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One of the most challenging and risky operations for spacecraft is to perform proximity Rendezvous and Docking (R&D) autonomously in space. To ensure a safe and reliable operation, such a mission must be carefully designed and thoroughly verified before a real space mission can be launched. This paper describes the control strategy for achieving high fidelity contact dynamics simulation of a new, robotics-based, hardware-in-the-loop (HIL) R&D simulation facility which uses two industrial robots to simulate the 6-DOF dynamic maneuvering of the two docking satellites. The facility is capable of physically simulating the final approaching within a 25-meter range and the entire docking or capturing process in a satellite on-orbit servicing mission. The paper discusses the difficulties of using industrial robots for HIL contact dynamics simulation and the proposed robot control strategy for dealing with these difficulties.
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Jokhio, Sarfraz A., Djebbar Tiab y Freddy H. Escobar. "Quantitative Analysis of Deliverability, Decline Curve, and Pressure Tests in CO2 Rich Reservoirs". En SPE Permian Basin Oil and Gas Recovery Conference. Society of Petroleum Engineers, 2001. http://dx.doi.org/10.2118/70017-ms.

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May, Ryan D. y Sanjay Garg. "Reducing Conservatism in Aircraft Engine Response Using Conditionally Active Min-Max Limit Regulators". En ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-70017.

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Current aircraft engine control logic uses a Min-Max control selection structure to prevent the engine from exceeding any safety or operational limits during transients due to throttle commands. This structure is inherently conservative and produces transient responses that are slower than necessary. In order to utilize the existing safety margins more effectively, a modification to this architecture is proposed, referred to as a Conditionally Active (CA) limit regulator. This concept uses the existing Min-Max architecture with the modification that limit regulators are active only when the operating point is close to a particular limit. This paper explores the use of CA limit regulators using a publicly available commercial aircraft engine simulation. The improvement in thrust response while maintaining all necessary safety limits is demonstrated in a number of cases.
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Informes sobre el tema "70E17"

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Jones, Tyrone L. y Brian E. Placzankis. The Examination of the Aluminum Alloy 7017 as a Replacement for the Aluminum Alloy 7039 in Lightweight Armor Systems. Fort Belvoir, VA: Defense Technical Information Center, julio de 2016. http://dx.doi.org/10.21236/ad1012477.

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