ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Unbekannt

Ice-stream demise dynamically conditioned by trough shape and bed strength (2019)

Bradwell, T., Small, D., Fabel, D., Smedley, R. K., Clark, C. D., Saher, M. H., Callard, S. L., Chiverrell, R. C., Dove, D., Moreton, S. G., Roberts, D. H., Duller, G. A. T., O Cofaigh, C.

American Association for the Advancement of Science (AAAS)

In: Science Advances

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 2019

Beschreibung: 〈p〉Ice sheet mass loss is currently dominated by fast-flowing glaciers (ice streams) terminating in the ocean as ice shelves and resting on beds below sea level. The factors controlling ice-stream flow and retreat over longer time scales (〉100 years), especially the role of three-dimensional bed shape and bed strength, remain major uncertainties. We focus on a former ice stream where trough shape and bed substrate are known, or can be defined, to reconstruct ice-stream retreat history and grounding-line movements over 15 millennia since the Last Glacial Maximum. We identify a major behavioral step change around 18,500 to 16,000 years ago—out of tune with external forcing factors—associated with the collapse of floating ice sectors and rapid ice-front retreat. We attribute this step change to a marked geological transition from a soft/weak bed to a hard/strong bed coincident with a change in trough geometry. Both these factors conditioned and ultimately hastened ice-stream demise.〈/p〉

Digitale ISSN: 2375-2548

Thema: Allgemeine Naturwissenschaft

Publiziert von American Association for the Advancement of Science (AAAS)

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

AKTUELLE ARTIKEL

S·F·X

Volltext

2

Unbekannt

Comment on "Global pattern of nest predation is disrupted by climate change in shorebirds" (2019)

Bulla, M., Reneerkens, J., Weiser, E. L., Sokolov, A., Taylor, A. R., Sittler, B., McCaffery, B. J., Ruthrauff, D. R., Catlin, D. H., Payer, D. C., Ward, D. H., Solovyeva, D. V., Santos, E. S. A., Rakhimberdiev, E., Nol, E., Kwon, E., Brown, G. S., Hevia,

American Association for the Advancement of Science (AAAS)

In: Science

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 2019

Beschreibung: 〈p〉Kubelka 〈i〉et al〈/i〉. (Reports, 9 November 2018, p. 680) claim that climate change has disrupted patterns of nest predation in shorebirds. They report that predation rates have increased since the 1950s, especially in the Arctic. We describe methodological problems with their analyses and argue that there is no solid statistical support for their claims.〈/p〉

Print ISSN: 0036-8075

Digitale ISSN: 1095-9203

Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

Publiziert von American Association for the Advancement of Science (AAAS)

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

AKTUELLE ARTIKEL

S·F·X

Volltext

3

Digitale Medien

Isolation of Brassins by Extraction of Rape (Brassica napus L.) Pollen (1978)

Mandava, N. ; Kozempel, M. ; Worley, J. F. ; [weitere]

s.l. : American Chemical Society

Industrial and engineering chemistry 17 (1978), S. 351-354

zur Merkliste hinzufügen auf der Merkliste

Details

Quelle: ACS Legacy Archives

Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/i360068a013

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

4

Digitale Medien

An analysis of the cobalt(2+) ion-induced nuclear magnetic resonance perturbations of hen egg white lysozyme (1978)

Lenkinski, R. E. ; Agresti, D. G. ; Chen, D. M. ; [weitere]

s.l. : American Chemical Society

Biochemistry 17 (1978), S. 1463-1468

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1520-4995

Quelle: ACS Legacy Archives

Thema: Biologie , Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/bi00601a016

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

5

Digitale Medien

Structural effects of myelin proteolipid apoprotein on phospholipids: a Raman spectroscopic study (1978)

Curatolo, W. ; Verma, S. P. ; Sakura, J. D. ; [weitere]

s.l. : American Chemical Society

Biochemistry 17 (1978), S. 1802-1807

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1520-4995

Quelle: ACS Legacy Archives

Thema: Biologie , Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/bi00602a035

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

6

Digitale Medien

Hydrogen rearrangements of gaseous butanoic acid cations (1978)

McAdoo, D. J. ; Witiak, D. N. ; McLafferty, F. W. ; [weitere]

s.l. : American Chemical Society

Journal of the American Chemical Society 100 (1978), S. 6639-6643

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1520-5126

Quelle: ACS Legacy Archives

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/ja00489a014

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

7

Digitale Medien

EFFECTS OF ULTRASONIC TREATMENT ON BINDING STRENGTH IN CURED HAM ROLLS (1978)

REYNOLDS, J. B. ; ANDERSON, D. B. ; SCHMIDT, G. R. ; [weitere]

Oxford, UK : Blackwell Publishing Ltd

Journal of food science 43 (1978), S. 0

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1750-3841

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Notizen: The purpose of the study was to determine the effects of ultrasonic treatment on muscle microstructure, breaking strength, cook yield, and protein extractability of ground cured ham rolls. A miniaturized system was designed which subjected ground ham to slow mixing and ultrasonic treatment. The samples were mixed for various times up to 2 hr, then stuffed into stoppered glass tubes for cooking in 80°C water bath. Controls were treated similarly, but without ultrasonic treatment. Results showed that ultrasound caused changes in muscle microstructure, increased breaking strength as measured in g/cm2 on an Instron Universal Testing Machine, decreased cooking loss and increased the extractability of salt-soluble protein. Ultrasound had no effect on the extractability of water-soluble protein.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1365-2621.1978.tb02442.x

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

8

Digitale Medien

A LARGE GLYCOPROTEIN LOST FROM THE SURFACES OF TRANSFORMED CELLS (1978)

Hynes, R. O. ; Ali, I. U. ; Destree, A. T. ; [weitere]

Oxford, UK : Blackwell Publishing Ltd

Annals of the New York Academy of Sciences 312 (1978), S. 0

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1749-6632

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Allgemeine Naturwissenschaft

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1749-6632.1978.tb16811.x

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

9

Unbekannt

Reducing the metabolic rate of walking and running with a versatile, portable exosuit (2019)

Kim, J., Lee, G., Heimgartner, R., Arumukhom Revi, D., Karavas, N., Nathanson, D., Galiana, I., Eckert-Erdheim, A., Murphy, P., Perry, D., Menard, N., Choe, D. K., Malcolm, P., Walsh, C. J.

American Association for the Advancement of Science (AAAS)

In: Science

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 2019

Beschreibung: 〈p〉Walking and running have fundamentally different biomechanics, which makes developing devices that assist both gaits challenging. We show that a portable exosuit that assists hip extension can reduce the metabolic rate of treadmill walking at 1.5 meters per second by 9.3% and that of running at 2.5 meters per second by 4.0% compared with locomotion without the exosuit. These reduction magnitudes are comparable to the effects of taking off 7.4 and 5.7 kilograms during walking and running, respectively, and are in a range that has shown meaningful athletic performance changes. The exosuit automatically switches between actuation profiles for both gaits, on the basis of estimated potential energy fluctuations of the wearer’s center of mass. Single-participant experiments show that it is possible to reduce metabolic rates of different running speeds and uphill walking, further demonstrating the exosuit’s versatility.〈/p〉

Print ISSN: 0036-8075

Digitale ISSN: 1095-9203

Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

Publiziert von American Association for the Advancement of Science (AAAS)

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

AKTUELLE ARTIKEL

S·F·X

Volltext

10

Unbekannt

Contribution of biomimetic collagen-ligand interaction to intrafibrillar mineralization (2019)

Song, Q., Jiao, K., Tonggu, L., Wang, L. G., Zhang, S. L., Yang, Y. D., Zhang, L., Bian, J. H., Hao, D. X., Wang, C. Y., Ma, Y. X., Arola, D. D., Breschi, L., Chen, J. H., Tay, F. R., Niu, L. N.

American Association for the Advancement of Science (AAAS)

In: Science Advances

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 2019

Beschreibung: 〈p〉Contemporary models of intrafibrillar mineralization mechanisms are established using collagen fibrils as templates without considering the contribution from collagen-bound apatite nucleation inhibitors. However, collagen matrices destined for mineralization in vertebrates contain bound matrix proteins for intrafibrillar mineralization. Negatively charged, high–molecular weight polycarboxylic acid is cross-linked to reconstituted collagen to create a model for examining the contribution of collagen-ligand interaction to intrafibrillar mineralization. Cryogenic electron microscopy and molecular dynamics simulation show that, after cross-linking to collagen, the bound polyelectrolyte caches prenucleation cluster singlets into chain-like aggregates along the fibrillar surface to increase the pool of mineralization precursors available for intrafibrillar mineralization. Higher-quality mineralized scaffolds with better biomechanical properties are achieved compared with mineralization of unmodified scaffolds in polyelectrolyte-stabilized mineralization solution. Collagen-ligand interaction provides insights on the genesis of heterogeneously mineralized tissues and the potential causes of ectopic calcification in nonmineralized body tissues.〈/p〉

Digitale ISSN: 2375-2548

Thema: Allgemeine Naturwissenschaft

Publiziert von American Association for the Advancement of Science (AAAS)

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

AKTUELLE ARTIKEL

S·F·X

Volltext