Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 21 - 30
of
466
Digital Libraries: A Generic Classification and Evaluation Scheme
, 2001
"... Evaluation of digital libraries (DLs) is essential for further development in this area. Whereas previous approaches were restricted to certain facets of the problem, we argue that evaluation of DLs should be based on a broad view of the subject area. For this purpose, we develop a new descripti ..."
Abstract
-
Cited by 31 (1 self)
- Add to MetaCart
Evaluation of digital libraries (DLs) is essential for further development in this area. Whereas previous approaches were restricted to certain facets of the problem, we argue that evaluation of DLs should be based on a broad view of the subject area. For this purpose, we develop a new
The Utilization of L-Methionine, DL-Methionine and Methionine Hydroxy Analogue by the Growing Chick1
, 1965
"... M ETHIONINE hydroxy analogue, because of its lower cost, is being used as a substitute for supplemental DL-methionine in commercial poultry rations. Nevertheless, its potency as a source of me-thionine activity for the chick remains a controversial question. Some workers (Gor-don and Sizer, 1955; Ma ..."
Abstract
- Add to MetaCart
; Machlin and Gor-don, 1959; Bruggemann et al., 1962) have found it to be equivalent to DL-methionine, whereas others (Sullivan and Bird, 1957; Calet and Melot, 1961) report that it is less potent. All of these workers used diets containing intact protein ranging from 12% to optimal levels in the diet
Inorganic nutrient limitation of oceanic bacterioplankton
- Limnol. Oceanogr
, 1997
"... Although it is commonly accepted that dissolved organic carbon (DOC) of algal origin limits bacterial growth in pelagic systems, there arc relatively few empirical studies documenting this effect. Depending on site and season, both organic and inorganic nutrients can limit the growth of freshwater b ..."
Abstract
-
Cited by 37 (0 self)
- Add to MetaCart
, the addition of glucose, either alone or in combination with NH,,, resulted in the smallest increase in growth rate (F = 0.2-0.4 d I), whereas the addition of PO.,, either alone or in combination with glucose and NH,, resulted in the largest increase (p = 0.55-0.60 d-l). Growth rates in the PO
Analytical usability evaluation for digital libraries: a case study
- In Proc. ACM/IEEE Joint Conference on Digital Libraries
, 2004
"... There are two main kinds of approach to considering usability of any system: empirical and analytical. Empirical techniques involve testing systems with users, whereas analytical techniques involve usability personnel assessing systems using established theories and methods. We report here on a set ..."
Abstract
-
Cited by 29 (7 self)
- Add to MetaCart
There are two main kinds of approach to considering usability of any system: empirical and analytical. Empirical techniques involve testing systems with users, whereas analytical techniques involve usability personnel assessing systems using established theories and methods. We report here on a set
Partial pancreatectomy in the rat and subsequent defect in glucose- induced insulin release. J Clin Invest
"... reduction of B cell mass in rats, 90 % partial pancrea-tectomies were performed. For the 6 wk following sur-gery moderate hyperglycemia was maintained in the fed state but there were no differences in body weight nor plasma insulin concentrations compared with sham-pancreatectomized controls. 8-10 w ..."
Abstract
-
Cited by 42 (8 self)
- Add to MetaCart
in vitro, insulin release after chal-lenge with 300 mg/dl glucose was markedly reduced whereas intact responsiveness to 10 mM arginine was retained. These data suggest that the chronic stimu-lation of a reduced B cell mass can lead to a selective loss of glucose-induced insulin secretion.
meso-and dl-Bivalvane (Pentasecododecahedrane). Enantiomer Recognition during Reductive Coupling of Racemic and Chiral2,3-Dihydro-and Hexahydrotriquinacen-2-ones
"... Abstract: Pinacolic reduction of both optically pure and racemic hexahydrotriquinacen-2-one ( 6 ) proceeds with exo,exo carbon-carbon bond formation. Coupling of enantiomerically pure 6 produces diol 11 exclusively. Formation of comparable amounts of 11 and 12 from ( f ) -6 shows that the diastereo ..."
Abstract
- Add to MetaCart
provides dl-bivalvane (2), whereas reduction of 19 gives rise to the meso-bivalvane isomer 3. Other aspects of these transformations and conformational possibilities for 2 and 3 are discussed. The dodecahedron is one of the five perfect solids (the others are the tetrahedron, cube, octahedron
Tractable and Decidable Fragments of Conceptual Graphs
- IN PROCEEDINGS OF ICCS'99
, 1999
"... It is well-known that problems like validity and subsumption of general CGs are undecidable, whereas subsumption is NP-complete for simple conceptual graphs (SGs) and tractable for SGs that are trees. We will employ results on decidable fragments of rst-order logic to identify a natural and expressi ..."
Abstract
-
Cited by 18 (0 self)
- Add to MetaCart
It is well-known that problems like validity and subsumption of general CGs are undecidable, whereas subsumption is NP-complete for simple conceptual graphs (SGs) and tractable for SGs that are trees. We will employ results on decidable fragments of rst-order logic to identify a natural
The YABBYGeneDROOPING LEAF Regulates Carpel Specification andMidrib Development inOryza sativa W
"... In this article, we report that carpel specification in the Oryza sativa (rice) flower is regulated by the floral homeotic gene DROOPING LEAF (DL) that is distinct from the well-known ABC genes. Severe loss-of-function mutations of DL cause complete homeotic transformation of carpels into stamens. M ..."
Abstract
- Add to MetaCart
specification is regulated by DL in rice flower development. Whereas CRC plays only a partial role in carpel identity, DL may have been recruited to have the more essential function of specifying carpels during the evolution of rice. We also show that DL interacts antagonistically with class B genes
LOW SERUM LEVELS OF DEHYDROEPIANDROSTERONE AND CORTISOL IN HUMAN DIFFUSE CUTANEOUS LEISHMANIASIS BY LEISHMANIA MEXICANA
"... Abstract. Low levels of dehydroepiandrosterone (DHEA) and cortisol hormones produced by the suprarenal cortex have been associated with diseases involving chronic inflammation, low interferon (IFN)-�, and high interleukin (IL)-6. Diffuse cutaneous leishmaniasis (DL), a long-lasting intracellular par ..."
Abstract
-
Cited by 3 (1 self)
- Add to MetaCart
in patients with DL and LL. Hormone levels were lower in DL compared with controls and LL. Furthermore, we detected a lower percentage of IFN-�–positive cells with higher levels of IL-6 and higher titers of anti-Leishmania antibodies in patients with DL, whereas patients with LL were similar to controls
JOURNAL DE PHYSIQUE IV Colloque C6, suppl6ment au Journal de Physique Dl, Volume 6, octobre 1996 Analyses of Void Growth and Coalescence in Cast Iron by Cell Models
"... Abstract The fracture process of cast iron is initiated at the graphite nodules, followed by intensive void growth and coalescence. Two- and three-dimensional cell models are developed to study the influence of stress triaxdity and void arrangement on these microscopical damage processes in nodular ..."
Abstract
- Add to MetaCart
GJJG~=OJ. Otherwise the graphite nodules can s w l y be modelled by voids. The three-dimensional cell models turned out that the spatial arrangement of periodic arrays of voids has only weak influence on the defonnation behaviour, whereas the plastic collapse behaviour is strongly a
Results 21 - 30
of
466
