ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Digitale Medien

Light-dependent synthesis of cholecalciferol in a green plant (1980)

Zucker, Hermann ; Stark, Heidi ; Rambeck, Walter A.

[s.l.] : Nature Publishing Group

Nature 283 (1980), S. 68-69

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] For the present studies, T. flavescens and other grasses were sown in a dark room in wooden frames containing finely sieved soil and covered by cubic tents of aluminium foil to exclude all radiation from the outside. Inside, Grolux lamps of 30 W each were placed 60cm above the soil surface. ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/283068a0

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2

Digitale Medien

Internal origin for lunar rilled craters and the maria? (1974)

WHITFORD-STARK, J. L.

[s.l.] : Nature Publishing Group

Nature 248 (1974), S. 573-575

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Evidence for lunar vertical crustal movement is provided by Apollo 15 photographs of dipping structures on Silver Spur (25 40' N, 3 58' E)8 and by craters containing rilles indicating either uplift9 or subsidence10. Principal lineaments such as rilles and faults, and craters larger than 10 km ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/248573a0

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3

Digitale Medien

Molecular Oxygen Absorption of Solar Lyman-α observed by Interkosmos-1 (1970)

FELSKE, D. ; MARTINI, L. ; STARK, B. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 228 (1970), S. 1298-1298

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] Theoretical curves of optical thickness at grazing incidence were calculated from the O2 and N2 densities given by the CIRA 1965 model atmosphere, which are nearly equal to the mean values between the summer and winter models of the US Standard Atmosphere Supplement 1966. Absorption cross-sections ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/2281298a0

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4

Digitale Medien

Proposed New Unit of Frequency (1970)

STARK, LAWRENCE

[s.l.] : Nature Publishing Group

Nature 225 (1970), S. 394-395

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] SIR,-I propose the establishment of a new intermediate unit of frequency?pitts. The pitts equals "pulses per second", "nerve pulses per second" or "spikes per second", all relatively clumsy terms used indeterminantly by neurophysiologists, brain research workers and others. The proposed new unit ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/225394b0

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5

Digitale Medien

Isolation of Octadecan-I : 18-diol from Spanish Broom (1951)

MUSGRAVE, O. C. ; STARK, JAMES ; SPRING, F. S.

[s.l.] : Nature Publishing Group

Nature 168 (1951), S. 298-298

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] A number of higher straight-chain aliphatic compounds in which the terminal carbon atoms carry functional groups have been isolated from natural sources. Several long-chain aw-dicarboxylic acids have been obtained from Japan wax2, and sabinic acid (12-hydroxylauric acid) and juniperic acid ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/168298a0

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6

Digitale Medien

Artificial Increase of Electrical Breakdown Strength of Air at Low Pressure in the Region of 300 Mc./s. (1954)

STARK, G. W. E. ; FOUGERE, G. L.

[s.l.] : Nature Publishing Group

Nature 174 (1954), S. 1066-1066

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

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

Notizen: [Auszug] If the breakdown strength of a gas is examined as the frequency of the applied stress is increased, two discontinuities are found to occur during the diminution of strength which has been observed to take place between very low and ultra-high frequencies. These are generally believed to mark the ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/1741066a0

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7

Digitale Medien

Biological optimality: Comparison of generalized feasibility and optimality conditions for linear, error-minimizing systems (1982)

Krishnan, V. V. ; Jury, E. I. ; Stark, L.

Springer

Bulletin of mathematical biology 44 (1982), S. 777-791

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ISSN: 1522-9602

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Mathematik

Notizen: Abstract An attempt is made to compare the conditions for the general error-optimality of linear systems developed by Kalman with the conditions for feasibility of linear models of neuromuscular and physiological control systems. Models of three actual physiological systems are tested for both the above criteria. Theoretical analysis presented here shows that there are no simple relationships between the two sets of conditions. Analysis carried out on the physiological systems models suggests the need for a general set of conditions for other optimality criteria, such as time and energy minimization, similar to Kalman's condition for error minimization.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02465180

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8

Digitale Medien

A cofferdam design optimization (1972)

Neghabat, Farrokh ; Stark, Robert M.

Springer

Mathematical programming 3 (1972), S. 263-275

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ISSN: 1436-4646

Quelle: Springer Online Journal Archives 1860-2000

Thema: Informatik , Mathematik

Notizen: Abstract The design of circular type cellular cofferdams is formulated as a nonlinear optimization model that takes explicit account of relevant economic and technologic aspects. The objective is minimization of total expected cost. The constraints arise from stability critera to protect against failures due to slipping of the sheet piles on the river side and interlock stresses at the joint. A solution achieved with geometric programming techniques, yields optimal cell sizes and design heights. The geometric programming approach provides important design insights by yielding the proportions of the total cost to be assigned to the cost components, fill material, sheet piling and flooding in an optimal design.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01585000

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9

Digitale Medien

Weitere experimentelle Untersuchungen über die Natur des Lichtes (1952)

Stark, J.

Springer

The European physical journal 133 (1952), S. 504-512

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ISSN: 1434-601X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01336862

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10

Digitale Medien

Folgerungen über die Konstitution der Lichtenergie (1953)

Stark, J.

Springer

The European physical journal 136 (1953), S. 221-223

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ISSN: 1434-601X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01343389

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