Results 41 to 50 of about 2,921 (224)

Fertility, female labor force participation, and the demographic dividend [PDF]

, 2009
Fertility, Labor supply, Demographic dividend, J13, J22, O15,
Günther Fink, David E. Bloom, Jocelyn E. Finlay, David Canning, Jocelyn Finlay, David Bloom   +5 more
core   +1 more source

利用抗生素耐药性突变技术筛选抗菌活性放线菌

四川大学学报. 自然科学版, 2009
利用抗生素耐药性突变,从12株天然无抗菌活性或活性微弱的放线菌中筛选活性菌株,共获得752株突变菌株。通过抑菌活性测定,筛选得到一株野生放线菌J22耐庆大霉素突变菌株,编号为J22-G6。该突变菌株具有强烈的抗细菌活性和较好的传代稳定性。该突变菌株在菌株形态方面与原始菌株有一定的差异。试验证明突变菌株J22-G6具有更强的耐受庆大霉素的能力。分析初步推定J22-G6所产生的抗菌活性物质为聚醚类化合物。
方丽萍, 杨春平, 魏少鹏, 吴文君   +3 more
doaj  

¿Cómo deciden los individuos en el mercado laboral? Modelos y estimaciones para Colombia

Lecturas de Economía, 2009
Este artículo estima modelos de elección de corte neoclásico para el mercado laboral colombiano. En una primera instancia se supone que las decisiones de los individuos son secuenciales: primero se decide la participación; si se participa, se decide si ...
José Ignacio Uribe, Carlos Humberto Ortiz, Juan Byron Correa   +2 more
doaj   +1 more source

Medical Libraries and Problem Based Learning: New Challenges and Opportunities [PDF]

Journal of Library and Information Studies, 2004
This article explores the changing role of the medical library and librarians in the context of problem-based learning in terms of five aspects-impacts on medical libraries, library instruction, technology, the collection, and the mew role of the ...
Kuan-nien Chen
doaj   +1 more source

Degradation of Rustic Canyon Crater in Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract The Rustic Canyon crater is a degraded impact structure on Mt. Sharp in Gale crater. The crater is irregular in plan form, ∼20 m across NW‐SE and ∼30 m across NE‐SW and lacks a raised rim. Using images and a Digital Terrain Model derived from a rover orthomosaic of the crater, we evaluated the amount and processes of degradation based on ...
J. A. Grant, S. A. Wilson, M. A. Cowart, C. M. Weitz, M. E. Hoffman, T. Kubacki, N. Milling, C. Juarez, F. J. Calef III, L. M. Thompson   +9 more
wiley   +1 more source

Examining the impact of alternative power measures on individual time use in American and Danish couple households

, 2010
Time Use, Power, Leisure, Housework, J22, J12,
Leslie Stratton, Nabanita Datta Gupta, Leslie S. Stratton   +2 more
core   +1 more source

Return to work after childbirth: does parental leave matter in Europe? [PDF]

, 2008
Parental leaves, Women’s labor supply, Childbirth, Europe, J13, J22,
Chiara Daniela Pronzato, Chiara Pronzato, Pronzato, Chiara Daniela   +2 more
core   +1 more source

Downsystem grain-size trends and mass balance of an ancient wave-influenced sediment routing system: Middle Jurassic Brent Delta, northern North Sea, offshore UK and Norway

Sedimentologika
We reconstruct spatial variations in grain size in the sediment routing system of the data-rich Middle Jurassic Brent Group of the northern North Sea, using published stratigraphic, thickness, palaeogeographic, provenance and age constraints combined ...
Ikenna C. Okwara, Gary J. Hampson, Alexander C. Whittaker, Gareth G. Roberts   +3 more
doaj   +1 more source

Predicting the creep compliances of short fiber reinforced polymer composites from the matrix creep using an elementary volume model Vorhersage der Kriechkomplianzen polymerer Kurzfaserverbunde auf Basis des Matrixkriechens mit Hilfe eines Elementar‐Volumen‐Modells

Materialwissenschaft und Werkstofftechnik, Volume 57, Issue 6, Page 567-585, June 2026.
Creep prediction of short fiber composites: A prediction tool is presented based on an elementary volume model. It predicts creep compliances of injection molded short fiber reinforced composites using only the matrix creep. The assumption “perfect fiber matrix adhesion” underestimates the creep enabling the introduction of an adhesion factor.
B. Möginger, J. Rech, B. Hausnerova
wiley   +1 more source

The depreciation of the peso and trade between Italy and Argentina

PSL Quarterly Review, 2014
The article describes the main outlines of the Argentine peso crisis, pointing out its nature and origin, diagnosing it as one of the “growing pains” of a country engaged in carrying out a bold plan of rapid industrialisation, and notes that the ...
G. LUZZATTO
doaj   +1 more source