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Grains, hemispherical

Ecuadorian Medium sized mushrooms on rye grain hemispheric caps abundant primordia former high yieiding on compost thin whitish stems easiiy picked. [Pg.197]

The formation of pores appears to start along the sub-grain boundaries of the metal, followed by the development of additional pores within the subgrains. Growth of oxide continues on a series of hemispherical fronts centred on the pore bases, provided that the effective barrier-layer thickness between the metal surface and the electrolyte within the pores, represented by the hemisphere radius, is less than 1-4 nm/V. As anodic oxidation proceeds at... [Pg.691]

Vitamin deficiency of Bj leads to the disease known as Beriberi. However, nowadays in the Western hemisphere, vitamin Bj deficiency is mainly found as a consequence of extreme alcoholism. In fact, the vitamin absorption by the gut is decreased and its excretion is increased by alcohol. Alcohol also inhibits the activation of vitamin Bj to its coenzyme form, thiamine pyrophosphate ester (TPP). There is no evidence of adverse effects of oral intake of thiamine [417]. The main food sources of vitamin Bj are lean pork, legumes, and cereal grains (germ fraction). It is soluble in water and stable at higher temperature and at pH lower than 5.0, but it is destroyed rapidly by boiling at pH 7.0 or above. [Pg.634]

The corn kernel is a one-seeded fruit classified as a grain,22 borne on a female inflorescence commonly known as the ear. Each ear is comprised of a central stem, the cob, on which up to 1000 seeds develop. The seeds (kernels) mature about 60 days after pollination and are harvested in late summer or early fall (in the northern hemisphere) when kernel moisture content has dropped below 30% (wet weight basis). [Pg.376]

In case the test sample is powdered or grain-shaped, place the substance on the sheet in a hemispherical pile. [Pg.121]

The history of the northern hemisphere ice sheets is an important aspect of the paleoclimate system. The layered record of IRD and other climate indicators preserved in deepsea sediment cores provides the potential to unravel the sequences of events surrounding important intervals during the last glacial cycle. Results of an extensive campaign to analyze the " Ar/ Ar ages of multiple individual hornblende grains in core... [Pg.3327]

Brook et al. (1990) found pollen grains incorporated in the pore spaces within the speleothem fabric. Since the age of the encapsulating calcite could be determined by U/Th methods, the age of the pollen could also be determined far beyond the usual limitation of carbon-14 dating. From pollen speciation in speleothems. Brook et al. concluded that the Chihuahuan Desert of southwestern United States and the Kalahari Desert of northwestern Botswana were wetter during northern hemisphere glacial and interstadial times. In contrast, wetter conditions in the Somali-Chalbi Desert corresponded with interglacials and to a lesser extent with interstadials. [Pg.152]

Figure 1.65 DT capacitance roadmap. The six curves represent different options 1, Si-etch with an aspect ratio (AR) of 45, straight DT profile 2, AR = 45 + bottle shape DT profile 3, AR = 60 4, AR = 60 + bottle 5, AR = 45 + bottle + HSC (hemispherical silicon grains) 6, AR = 45 + bottle + high e dielectric materials such as TiOj, TajOs and AI2O3. Figure 1.65 DT capacitance roadmap. The six curves represent different options 1, Si-etch with an aspect ratio (AR) of 45, straight DT profile 2, AR = 45 + bottle shape DT profile 3, AR = 60 4, AR = 60 + bottle 5, AR = 45 + bottle + HSC (hemispherical silicon grains) 6, AR = 45 + bottle + high e dielectric materials such as TiOj, TajOs and AI2O3.
Assuming homogeneously distributed, equal to each other, hemispherical grains of the catalyst on an inert substrate, in a way similar to that used by Gileadi16 to describe an ensemble of microelectrodes, the surface of the macroelectrode can be presented by an idealized model, as in Fig. 2, and the number of grains per square centimeter is given by ... [Pg.172]

It is obvious from (57) that the quantity of catalyst in the form of small hemispherical grain required to transform an inert electrode into an active one decreases rapidly with decrease in size of the particles, for one and the same Sw, as well as with the increase of the... [Pg.188]

Doubtless, the main contribution of this chapter is (57), which correlates the quantity of catalyst required for complete activation of inert electrode with size and density of hemispherical active grain and parameters of electrochemical process taking place on them. [Pg.210]

In Chapter 4 by Popov et al., the aspects of the newest developments of the effect of surface morphology of activated electrodes on their electrochemical properties are discussed. These electrodes, consisting of conducting, inert support which is coated with a thin layer of electrocatalyst, have applications in numerous electrochemical processes such as fuel cells, industrial electrolysis, etc. The inert electrodes are activated with electrodeposited metals of different surface morphologies, for example, dendritic, spongy-like, honeycomblike, pyramid-like, cauliflower-like, etc. Importantly, the authors correlate further the quantity of a catalyst and its electrochemical behavior with the size and density of hemispherical active grain. [Pg.302]

The amount of each component in a double texture is proportional to the area under the peak(s) due to that component on a curye of /sin vs. (f> knowledge of the multiplicities involved can reduce the number of peaks that need be considered. The multiplicity of 111 poles is 8 for a sphere and 4 for a hemisphere. In Fig. 9-22 the [100] component puts four 111 poles per grain under the peak at 55° the [111] component, on the other hand, has one 111 pole at 0° and three at 70°. Because of the uncertainty in the area of the peak at 0°, the area ascribed to the [111] component can be taken as... [Pg.318]

Assadollabaik, M. Liu, H. Westrich, P. Design and test of hydraulic capsules to transport grain. In Freight Pipelines] Liu, H., Round, G.F., Eds. Hemisphere Publishing Corporation New York, 1990. [Pg.304]

Fig. 2 Glutamic acid decarboxylase (GAD) 67 mRNA-labeling in cerebellar Purkinje cells in the Crus 11 region of the lateral cerebellar hemisphere from an individual with autism. Note the accumulation of silver grains within the soma and apical dendrite (arrow) labeled via in situ hybridization. Scale bar =100 p.m... Fig. 2 Glutamic acid decarboxylase (GAD) 67 mRNA-labeling in cerebellar Purkinje cells in the Crus 11 region of the lateral cerebellar hemisphere from an individual with autism. Note the accumulation of silver grains within the soma and apical dendrite (arrow) labeled via in situ hybridization. Scale bar =100 p.m...
Pathfinder), 4000 km apart in the northern hemisphere gave similar basaltic compositions for the fine-grained soils that were analyzed the fine material will contain a significant component from the ancient cratered terrain that dominates the southern hemisphere, where most of the global dust storms originate. However, no component more siliceous than basalt appears in the Martian compositions. At the Pathfinder site, more siliceous rock... [Pg.22]

Eortes, M., and Okos, M.R. 1980. Drying theories their bases and limitations as applied to foods and grains. In Advances in drying. Vol. 1. Ed. A.S. Mujumdar, 119-154. Washington, DC Hemisphere. [Pg.1715]

A thin layer of the catalyst was deposited upon the surface of the sample holder by sedimentation from a coarse-grained suspension of the sample in isopropyl alcohol. XPS measurements are performed in a UHV analysis chamber equipped with a multichannel detection hemispherical analyzer and a dual Al/Mg X-ray source operated at a power of 150 W. A preparation chamber enabling ion sputtering at high Ar current densities is also available. [Pg.524]

Figure I. Schematic of pressure solution. Initially, two hemispheres are in contact. Ai compaction proceeds, the mineral at grain contacts dissolves due to high stress concentration. Solutes diffuse from the interface into the pore space. Finally, precipitation occurs as a result of oversaturation of solutes in the pore fluid. Grain geometries are no longer spherical. Figure I. Schematic of pressure solution. Initially, two hemispheres are in contact. Ai compaction proceeds, the mineral at grain contacts dissolves due to high stress concentration. Solutes diffuse from the interface into the pore space. Finally, precipitation occurs as a result of oversaturation of solutes in the pore fluid. Grain geometries are no longer spherical.
The films containing more than 14 at. % of boron have X-ray amorphous structure. The surface also consists of hemispherical formations, and appears to be more smoothed. The grain boundaries are less pronounced. [Pg.509]


See other pages where Grains, hemispherical is mentioned: [Pg.416]    [Pg.151]    [Pg.181]    [Pg.64]    [Pg.143]    [Pg.475]    [Pg.989]    [Pg.145]    [Pg.89]    [Pg.442]    [Pg.356]    [Pg.414]    [Pg.359]    [Pg.2270]    [Pg.3397]    [Pg.3999]    [Pg.4912]    [Pg.1571]    [Pg.246]    [Pg.89]    [Pg.201]    [Pg.281]    [Pg.246]    [Pg.200]    [Pg.274]    [Pg.797]    [Pg.735]   


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