zea mays seedlings: Topics by WorldWideScience.org

Increased Endogenous Abscisic Acid Maintains Primary Root Growth and Inhibits Shoot Growth of Maize Seedlings at Low Water Potentials ¹

Indole-3-acetyl-myo-inositol occurs in both the kernel and vegetative shoot of germinating Zea mays seedlings. The effect of a gravitational stimulus on the transport...Full Text Available

1988-07-01

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Oxygen Inhibition of Nitrate Reductase Biosynthesis in Detached Corn Leaves via Inhibition of Total Soluble Protein Synthesis ¹

Roots of maize (Zea mays L.) seedlings continue to grow at low water potentials that cause complete inhibition of shoot growth. In this study, we have investigated the role of abscisic...Full Text Available

1990-08-01

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Sugar Efflux from Maize (Zea mays L.) Pedicel Tissue 1

Detached first leaves of 3-day-old corn seedlings (Zea mays L. W64AxW183E) were incubated with nitrate in air or 100% O₂ in the light. Nitrate accumulation in the leaves...Full Text Available

1989-11-01

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Regulation of Embryo Dormancy by Manipulation of Abscisic Acid in Kernels and Associated Cob Tissue of Zea mays L. Cultured in Vitro¹

Sugar release from the pedicel tissue of maize (Zea mays L.) kernels was studied by removing the distal portion of the kernel and the lower endosperm, followed by replacement of the...Full Text Available

1985-03-01

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Acetolactate Synthase Activity in Developing Maize (Zea mays L.) Kernels

Sectors of Zea mays cobs, with and without kernels were cultured in vitro in the presence and absence of fluridone. Cultured kernels, cob tissue, and embryos developed...Full Text Available

1989-09-01

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Relationship of source and sink in determining kernel composition of maize

Acetolactate synthase (EC 4.1.3.18) activity was examined in maize (Zea mays L.) endosperm and embryos as a function of kernel development. When assayed using unpurified homogenates,...Full Text Available

1988-01-01

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Assessment of the impact of increasing concentrations of ozone on photosynthetic components of maize (Zea mays L.), a C{sub 4} plant

The relative role of the maternal source and the filial sink in controlling the composition of maize (Zea mays L.) kernels is unclear and may be influenced by the genotype and the N...Full Text Available

2010-01-01

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["3H]Indole-3-acetyl-myo-inositol hydrolysis by extracts of Zea mays L. vegetative tissue

Ozone may induce opposite effects on maize photosynthesis.

2007-03-15

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Trade-offs Between Seedling Growth and Survival in Deciduous Broadleaved Trees in a Temperate Forest

["3H]Indole-3-acetyl-myo-inositol was hydrolyzed by buffered extracts of acetone powders prepared from 4 day shoots of dark grown Zea mays L. seedlings. The hydrolytic activity was proportional to the amount of extract added and was linear for up to 6 hours at 37"0C. Boiled or alcohol denatured extracts were inactive. Analysis of reaction mixtures by high performance liquid chromatography demonstrated that not all isomers of indole-3-acetyl-myo-inositol were hydrolyzed at the same rate. Buffered extracts of acetone powders were prepared from coleoptiles and mesocotyls. The rates of hydrolysis observed with coleoptile extracts were greater than those observed with mesocotyl extracts. Active extracts also catalyzed the hydrolysis of esterase substrates such as #alpha#-naphthyl acetate and the methyl esters of indoleacetic acid and naphthyleneacetic acid. Attempts to purify the indole-3-acetyl-myo-inositol hydrolyzing activity ...

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Metabolism and Synthesis of Indole-3-Acetic Acid (IAA) in Zea mays (Levels of IAA during Kernel Development and the Use of in Vitro Endosperm Systems for Studying IAA Biosynthesis).

Background and AimsIn spatially heterogeneous environments, a trade-off between seedling survival and relative growth rate may promote the coexistence of plant species. In temperate...Full Text Available

2007-03-01

12

Water Relations of Growing Maize Coleoptiles ¹

Kernels of Zea mays on an intact plant accumulate indole-3-acetic acid (IAA) at the rate of 190 ng g-1 fresh weight h-1. Of the IAA synthesized, 97% is in the esterified form and less than 3% remains...Full Text Available

1994-09-01

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Transport of Indole-3-Acetic Acid during Gravitropism in Intact Maize Coleoptiles ¹

Water relations of growing segments of maize (Zea mays L.) coleoptiles were investigated with osmotic methods using either mannitol (MAN) or polyethylene glycol 6000 (PEG) as external...Full Text Available

1991-03-01

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Synthesis and Phosphorylation of Maize Acidic Ribosomal Proteins1

We have investigated the transport of tritiated indole-3-acetic acid (IAA) in intact, red light-grown maize (Zea mays) coleoptiles during gravitropic induction and the subsequent development...Full Text Available

1990-12-01

15

Red Light-Regulated Growth ¹

The objective of this research was to determine the role of acidic ribosomal protein (ARP) phosphorylation in translation. Ribosomes (Rbs) from germinated maize (Zea mays L.) axes had...Full Text Available

1998-01-01

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Organ-Specific Invertase Deficiency in the Primary Root of an Inbred Maize Line ¹

We examined the changes in the levels of indoleacetic acid (IAA), IAA esters, and a 22-kilodalton subunit auxin-binding protein (ABP1) in apical mesocotyl tissue of maize (Zea mays...Full Text Available

1991-09-01

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Electrical Resistances of Corn Root Segments ¹²

An organ-specific invertase deficiency affecting only the primary root system is described in the Oh 43 inbred maize (Zea mays). Invertases (acid and neutral/soluble and insoluble)...Full Text Available

1991-10-01

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Effects of Multivalent Cations on Cell Wall-Associated Acid Phosphatase Activity

Longitudinal electrical resistances have been measured on 2-centimeter segments of corn (Zea mays L.) roots, cut at varying distances from the root apex. The segment resistances vary...Full Text Available

1976-02-01

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Acetylene Reduction by Soil Cores of Maize and Sorghum in Brazil

Primary cell walls, free from cytoplasmic contamination were prepared from corn (Zea mays L.) roots and potato (Solanum tuberosum) tubers. After EDTA treatment, the...Full Text Available

1988-09-01

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Structural features underlying selective inhibition of protein kinase CK2 by ATP site-directed tetrabromo-2-benzotriazole

Nitrogenase activity was measured by the C₂H₂ reduction method in large soil cores (29 cm in diameter by 20 cm in depth) of maize (Zea mays) and sorghum (Sorghum...Full Text Available

1977-03-01

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Spatial Distribution of Turgor and Root Growth at Low Water Potentials ¹

Two novel crystal structures of Zea mays protein kinase CK2α catalytic subunit, one in complex with the specific inhibitor 4,5,6,7-tetrabromobenzotriazole (TBB) and another...Full Text Available

2001-11-01

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Purification by Immunoadsorption and Immunochemical Properties of NADP-Dependent Malic Enzymes from Leaves of C₃, C₄, and Crassulacean Acid Metabolism Plants

Spatial distributions of turgor and longitudinal growth were compared in primary roots of maize (Zea mays L. cv FR27 × FRMo 17) growing in vermiculite at high (−0.02...Full Text Available

1991-06-01

23

Nucleotide sequence of a Euglena gracilis chloroplast gene coding for the 16S rRNA: homologies to E. coli and Zea mays chloroplast 16S rRNA.

NADP:malic enzyme from corn (Zea mays L.) leaves was purified by conventional techniques to apparent homogeneity as judged by sodium dodecyl sulfate-polyacrylamide gel electrophoresis....Full Text Available

1990-03-01

24

Isomerization of 1-O-Indol-3-Ylacetyl-?-d-Glucose ¹

The nucleotide sequence of 16S rDNA from Euglena gracilis chloroplasts has been determined representing the first complete sequence of an algal chloroplast rRNA gene. The structural part of the 16S...Full Text Available

1982-10-25

25

Enzymic synthesis of 1-O-(indol-3-ylacetyl)-beta-D-glucose. Purification of the enzyme from Zea mays, and preparation of antibodies to the enzyme.

The first compound in the series of reactions leading to the ester conjugates of indole-3-acetic acid (IAA) in kernels of Zea mays sweet corn is the acyl alkyl acetal, 1-O-indol-3-ylacetyl-β-d-glucose...Full Text Available

1990-09-01

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Effect of Lanthanum on Ion Absorption in Corn Roots ¹

The enzyme indol-3-ylacetylglucose synthase (UDP-glucose:indol-3-ylacetate beta-D-glucosyltransferase) catalyses the reaction: [formula: see text] This is the first step in the series of reactions leading...Full Text Available

1991-10-15

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Determination of Fe and Zn in agricultural plants with special cultivation by radionuclide x-ray fluorescence analysis

Short term (10 min) influx of ⁸⁶Rb-labeled potassium into corn (Zea mays L. WF9 × M14) root segments was inhibited by La (NO₃)₃ or LaCl₃....Full Text Available

1975-03-01

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Nutrient dynamics and carbon partitioning in nutrient loaded Picea mariana [Mill.] B.S.P. seedlings during hardening

Fe and Zn were determined in various parts of maize (Zea mays) in dependence on quantity of organic substrate EKOFERT as organic fertilizer in soil, using radionuclide X-ray fluorescence analysis. The increase of quantity of organic substrate EKOFERT in soil causes a decrease of heavy metal concentrations in certain parts of the plant. (author). 4 refs., 1 tab.

1996-01-01

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A lysimeter study of nitrate leaching, optimum fertilisation rate and growth responses of corn (Zea mays L.) following soil amendment with water-saving super-absorbent polymer

Biomass and nutrient dynamics of black spruce seedlings during the hardening phase of the greenhouse rotation were examined after four pre-hardening fertilization regimes - conventional, constant-rate loading, exponential loading, and high exponential loading (delivering respectively 15, 40, 40 and 60 mg N seedling{sup -1}) - in order to assess nutrient dilution and steady-state nutrition. Although height growth of seedlings had virtually ceased during hardening, shoot biomass increased 99-142% and root biomass increased five- to tenfold depending on treatment. The biomass increase compromised steady-state nutrient status by diluting internal nutrient pools as nutrient supply was unable to keep up with growth. Soil nutrient levels were rapidly depleted during this period because of plant uptake and lack of fertilizer supplementation. Pre-hardening nutrient loading partly countered and delayed dilution effects, especially ...

1997-07-01

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British Library Electronic Table of Contents (United Kingdom)

Abstract BACKGROUND: Nitrate leaching and the resulting groundwater contamination from intensive cereal production has become a major concern for long-term farmland efficiency and environmental sustainability in northern China. The aim of this study was to evaluate a water-saving super-absorbent polymer (SAP) for minimising NO3- leaching from soil and optimising corn growth and yield. Thirty-six undisturbed soil lysimeters were installed in a field lysimeter facility in drought-affected northern China to study the growth and yield characteristics of summer corn (Zea mays L.) as well as the amount of NO3-leaching losses under different fertiliser (standard, medium or 75% and low, or 50% of conventional fertilisation rate) and SAP (control, 0; level-1, 15 kg ha-1 and level-2, 30 kg ha-1) tre...

2011-01-01

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Effects of fungicides on endophytic fungi and photosynthesis in seedlings of a tropical tree, guarea guidonia (meliaceae)

The Metabolism of the Germinating Oil Palm (Elaeis guineensis) Seedling 1

Endophytes are microorganisms that live within healthy plant tissues, and include fungi and bacteria. They can be mutualists, comensals or even latent pathogens. Presence of these endosymbionts may affect host physiology, for example by consuming products of photosynthesis (endophytes are heterotrophs) or producing toxic metabolites. In this work two fungicides were used to eliminate fungal endophytes from seedlings of guarea guidonia. light saturated photosynthesis (Amax) was measured in endophytefree plants and compared with control plants. Each fungicide killed different fungal endosymbionts. phomopsis was more susceptible to benomyl while colletotrichum was more susceptible to propiconazole. Although suggestive, values of Amax were not significantly different for each treatment compared with control plants. No prediction can be made at this point about the final outcome of a given plantendophytic fungi interaction

2005-12-01

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Selection of ancillary data to derive production management units in sweet corn (Zea Mays var. rugosa) using MANOVA and an information criterion

The metabolism of ¹⁴C-labeled fatty acids and triacylglycerols was followed in intact germinating oil palm seedlings as well as in tissue slices. In the germinating seedling, the shoot contained...Full Text Available

1983-12-01

33

British Library Electronic Table of Contents (United Kingdom)

In production systems where high-resolution harvest data are unavailable there is often a reliance on ancillary information to generate potential management units. In these situations correct identification of relevant sources of data is important to minimize cost to the grower. For three fields in a sweet corn production system in central NSW, Australia, several sets of high-resolution data were obtained using soil and crop canopy sensors. Management units were derived by k-means classification for 2?5 classes using three approaches: (1) with soil data, (2) with crop data and (3) a combination of both soil and crop data. Crop quantity and quality were sampled manually, and the sample data were related to the different management units using multivariate analysis of variance (MANOVA). The ...

2011-01-01

34

PROCAMPO, the Mexican corn market, and Mexican food security

British Library Electronic Table of Contents (United Kingdom)

PROCAMPO (Program for Direct Assistance in Agriculture or Programa de Apoyos Directos al Campo) is an income transfer payment to Mexican farmers that compensates them for subsidies received by foreign competitors. Corn (Zea mays) has received the largest amount of PROCAMPO payments and is the primary component of Mexico?s food and feed supply. Results of a spatial and temporal model show that without PROCAMPO, Mexican annual average corn production would have been lower and corn imports would have been 40.5% higher in 2005?2007. Increased producer and consumer surplus and savings from reduced imports reveal that the benefits of PROCAMPO were higher than the program?s costs. Greater PROCAMPO support would decrease Mexican corn imports and increase domestic corn production. It is recommended...

2011-01-01

35

Growth and transpiration of maize and winter wheat in response to water deficits in pots and plots

British Library Electronic Table of Contents (United Kingdom)

Pots used for experiments conducted on plants grown in them create rooting environments that are affected by limited soil volume, which can affect various physiological processes, including transpiration, and plant growth. However, the applicability of results from pot experiments to the field has received limited attention. The objective of this study was to compare the growth and transpiration of maize (Zea mays L.) and winter wheat (Triticum aestivum L.) when grown in pots and field plots under various constant water deficits. The experiments were conducted under similar environmental conditions for both pots and plots. Transpirational responses at both transient (RTTr) and daily (RDTr) time scales to a decreasing fraction of available soil water (FASW) were analyzed. For a comparable F...

2011-01-01

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Evolution of drought severity and its impact on corn in the Republic of Moldova

British Library Electronic Table of Contents (United Kingdom)

Droughts in Moldova were evaluated using meteorological data since 1955 and a long time series (1891?2009). In addition, yields for corn (Zea mays L.), a crop widely grown in Moldova, were used to demonstrate drought impact. The main aim is to propose use of the S i (S i-a and S i-m) drought index while discussing its potential use in studying the evolution of drought severity in Moldova. Also, a new multi-scalar drought index, the standardized precipitation?evapotranspiration index (SPEI), is tested for the first time in identifying drought variability in Moldova while comparing it with the commonly used standardized precipitation index (SPI). S i-m, SPI, SPEI, and S i-a indices show an increasing tendency toward more intensive and prolonged severely dry and extremely dry summer months. D...

2011-01-01

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Tissue culture and micropropagation for forest biomass production

Synthesis of 4,5,6,7 and 2,4,5,6,7 deuterium-labeled indole-3-acetic acid for use in mass spectrometric assays

An increase in forest production will be necessary in the future when wood becomes a major renewable source of energy and chemicals along with its traditional role of fibre source. This increase could eventually by achieved be proper selection and breeding of trees. Clonal forestry by vegetative propagation of cuttings is becoming a viable alternative to a seedling-based forestry with many advantages, and cutting could be used to quickly propagate large numbers of clones of control-pollinated seedlings. Most forest trees are propagated sexually and seed orchards were started in the US and Canada in the last 40-50 years for breeding purposes. Forests could ultimately be established with improved seedlings instead of from seed with unknown genetic potential, or by natural regeneration. Micropropagation is the term used to refer to the propagation of plants raised by tissue culture methods rather than from seeds or cuttings. ...

1984-09-01

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Germination and Seedling Emergence of Ammannia coccinea as Influenced by Environmental Factors

Syntheses are described for tetra and pentadeutero indole-3-acetic acid (IAA) labeled in positions 4,5,6,7 or 2,4,5,6,7 of the indole moiety. Polydeuterated IAA is proposed as an internal standard for gas chromatographic-mass spectrometric analysis of IAA by selected ion monitoring. Nanogram amounts of IAA may be assayed by monitoring the base peak of IAA at m/z = 130 (134 for d/sub 4/-IAA) and the molecular ion of the methyl ester of IAA at 189 (193 for d/sub 4/-IAA). Deuterium in positions 4,5,6, and 7 and, to only a slightly lesser extent, that in position 2 of IAA is retained during alkali treatment, thus permitting use of these compounds as internal standards for assay of IAA released by alkaline hydrolysis of ester and amide conjugates. The use of polydeutero internal standards separates the standards from the isotope cluster caused by the normal abundance of heavy isotopes and also permits use of reduced mass resolution, thus leading to a 10-fold increase in ...

1980-10-01

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Effects of Simulated Acid Rain on Growth, Pigments and Leaf Surface Morphology of the Seedlings of Amaranthus tricolor L.

Full Text Available

2010-06-01

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Uptake and utilization of nutrients by developing kernels of Zea mays L

Full Text Available

1994-08-01

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Labelling of "1"4C-M-ISP and its absorption, translocation and distribution in peanut and soybean seedling

The mechanisms involved in amino acid and sugar uptake by developing maize kernels were investigated. In the pedicel region of maize kernel, the site of nutrient unloading from phloem terminals, amino acids are accumulated in considerable amounts and undergo significant interconversion. A wide spectrum of enzymatic activities involved in the metabolism of amino acids is observed in these tissues. Subsequently, amino acids are taken up by the endosperm tissue in processes which require energy and the presence of carrier proteins. Conversely, no evidence was found that energy and carriers are involved in sugar uptake. This process of sugar uptake is not inhibited by metabolic inhibitors and shows nonsaturable kinetics, but the uptake is pH-dependent. L-glucose is taken up at a significantly reduced rate in comparison to D-glucose uptake. Based on analysis of radioactivity distribution among sugar fractions after incubations of kernels with radiolabeled D-glucose, it seems that sucrose is ...

1987-01-01

42

Phosphorus Immobilization and Soil Aggregation in Chemically Amended Poultry Litter Used in Corn/Soybean Rotation

Labelling of "1"4C-M-ISP and its absorption, translocation and distribution in peanut and soybean seedling were studied. The results of experiments showed that the radioactive substance could be translocated in xylem and phloem of two kinds of plants. The root of peanut seedling absorbed "1"4C-M-ISP from the nutrient solution more strong than the root of soybean seedling did. After leaf treatment with "1"4C-M-ISP, the soybean seedling absorbed more radioactive substance than peanut seedling did. But the translocation's speed of radioactive substance in pnloem of two kinds of plants were similar.

1990-01-01

43

British Library Electronic Table of Contents (United Kingdom)

Excessive use of poultry litter (PL) on agricultural land is known to cause eutrophication of surface waters. Consequently, both poultry producers and PL users have to meet strict state and federal guidelines on litter storage and land application. This study examined the environmental benefits of adding lime, alum, ferrous sulfate, fly ash (FA), fluidized bed ash (FBA) and soil fix (SF) to PL for immobilizing excess phosphorus (P) while providing sufficient nutrients for proper growth of soybean [Glycine max (L.)] and corn [Zea mays (L.)] on a rotation. Amending PL with lime, alum, SF, FA and FBA significantly (p>0.05) increased corn and soybean yield. In contrast control plots that received a 10-10-10 (N-P2O5-K2) fertilizer showed lower yield and corn quality. Increased yield was ob...

2011-01-01

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Some Enzymic Activities in the Germinating Oil Palm (Elaeis guineensis) Seedling 1

Nitrate Reduction by Roots of Soybean (Glycine max [L.] Merr.) Seedlings

In germinating oil palm (Elaeis guineensis var D × P) seedling, an active lipase was present in the shoot but absent from both the kernel and the haustorium. It has an optimum...Full Text Available

1983-12-01

45

Ethylene-Induced Leaf Abscission in Cotton Seedlings ¹

Studies were conducted with 9 to 12 day-old soybean (Glycine max [L.] Merr. cv. Williams) seedlings to determine the contribution of roots to whole plant NO₃⁻...Full Text Available

1982-06-01

46

Cytoplasmic Calcium Increases in Response to Changes in the Gravity Vector in Hypocotyls and Petioles of Arabidopsis Seedlings1

The speed of ethylene-induced leaf abscission in cotton (Gossypium hirsutum L. cv LG-102) seedlings is dependent on leaf position (i.e. physiological age). Fumigation...Full Text Available

1991-01-01

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Auxins Induce Tryptophan Decarboxylase Activity in Radicles of Catharanthus Seedlings ¹

Plants respond to a large variety of environmental signals, including changes in the gravity vector (gravistimulation). In Arabidopsis (Arabidopsis thaliana) seedlings, gravistimulation...Full Text Available

2008-02-01

48

Genetic variability, heritability and genetic advance for seedling traits in sorghum genotypes

Germinating seedlings of Catharanthus roseus produce monoterpenoid indole alkaloids as a result of a transient increase of tryptophan decarboxylase (TDC) activity. The influence of...Full Text Available

1992-10-01

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Responses of hybrid poplar clones and red maple seedlings to ambient O_3 under differing light within a mixed hardwood forest

Analysis of data on seedling traits from 20 diverse genotypes revealed significant differences fro most of the seedling traits. Significant estimates of broad-sense heritability were observed for VI, ERI, FRTW, DRTW and R/S ratio. Genetic advance was maximum for VI,ERI and E%. The correlation of VI with ERI and R/S ratio was negative and significant, whereas it was positive and significant with E%, FSHW and DSHW. Characterization of the sorghum genotypes according to Anderson's Metro glyph Statistics revealed five different groups for seedling trails. (authors)

1999-01-01

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Interaction between high levels of applied heavy metals and indigenous soil manganese

The responses of ramets of hybrid poplar (Populus spp.) (HP) clones NE388 and NE359, and seedlings of red maple (Acer rubrum, L.) to ambient ozone (O_3) were studied during May-September of 2000 and 2001 under natural forest conditions and differing natural sunlight exposures (sun, partial shade and full shade). Ambient O_3 concentrations at the study site reached hourly peaks of 109 and 98 ppb in 2000 and 2001, respectively. Monthly 12-h average O_3 concentrations ranged from 32.3 to 52.9 ppb. Weekly 12-h average photosynthetically active radiation (PAR) within the sun, partial shade and full shade plots ranged from 200 to 750, 50 to 180, and 25 to 75 #mu#mol m"-"2 s"-"1, respectively. Ambient O_3 exposure induced visible foliar symptoms on HP NE388 and NE359 in both growing seasons, with more severe injury observed on NE388 than on NE359. Slight foliar symptoms were observed on red maple seedlings during the 2001growing ...

2004-07-01

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Vermicompost treatment differentially affects seed germination, seedling growth and physiological status of vegetable crop species

The importance of indigenous soil Mn level on plant Mn uptake from metal salt or sewage sludge amended soils was investigated. Twelve soil materials, six surface and six subsurface, were amended with either varying rates of a composite of Cd, Cu, Ni, and Zn sulfate salts, equivalent to the total of these metals present in a digested sewage sludge (Washington, DC) at rates of 0 to 896 dry metric tons/ha or with the sludge itself, at 224 dry metric tons/ha. Corn (Zea mays L.) was grown in the greenhouse for 30 days, 1 year after amendment application. Two pH levels of about 5.5 and 6.5 were maintained during the experiment on the metal salt amended soil materials. Plant tissue Mn levels increased with the application of Cd, Cu, Ni, and Zn (in combination) as metal salts or as sewage sludge over the range of soil materials used. The amount of increase with a given increase in applied metals was greater for the unlimed than for the limed metal salt ...

1981-01-01

52

British Library Electronic Table of Contents (United Kingdom)

Vermicompost preparations are increasingly used in agricultural practice. There is a possibility, that crop plants are sensitive to negative effect of vermicompost at early stages of development. The aim of the present study was to test the effects of vermicompost on seed germination and seedling growth of different vegetable crop species. Vermicompost substitution inhibited seed germination and seedling growth with almost linear decrease of growth with increasing concentration of vermicopost in the substrate. However, both leaf chlorophyll content and photochemical activity of photosynthesis increased in all crop species with the exception of pea seedlings. Vermicompost extract as a watering solution showed positive effect on growth of bean and pea seedlings. Germination response of vermi...

2011-01-01

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Diversity of Tropical Tree Seedling Responses to Drought

British Library Electronic Table of Contents (United Kingdom)

ABSTRACT Drought is an important seedling mortality agent in dry and moist tropical forests, and more severe and frequent droughts are predicted in the future. The effect of drought on leaf gas exchange and seedling survival was tested in a dry-down experiment with four tree species from dry and moist forests in Bolivia. Seedlings were droughted and wilting stage and gas exchange were monitored. Drought led to a gradual reduction of photosynthesis and stomatal conductance over time, whereas respiration and photosynthetic water-use efficiency initially increased with drought and then declined. Seedlings gradually went through the different wilting stages, until they eventually died, but the trajectory differed for the four species. The strong relationship between wilting stage and photosynt...

2007-01-01

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Helminthosporium maydis T toxin decreased calcium transport into mitochondria of susceptible corn

Symbiotic regulation of plant growth, development and reproduction

The effects of purified Helminthosporium maydis T (HmT) toxin on active Ca/sup 2 +/ transport into isolated mitochondria and microsomal vesicles were compared for a susceptible (T) and a resistant (N) strain of corn (Zea mays). ATP, malate, NADH, or succinate could drive /sup 45/Ca/sup 2 +/ transport into mitochondria of corn roots. Ca/sup 2 +/ uptake was dependent on the proton electrochemical gradient generated by the redox substrates or the reversible ATP synthetase, as oligomycin inhibited ATP-driven CA/sup 2 +/ uptake while KCN inhibited transport driven by the redox substrates. Purified native HmT toxin completely inhibited Ca/sup 2 +/ transport into T mitochondria at 5 to 10 nanograms per milliliter while transport into N mitochondria was decreased slightly by 100 nanograms per milliliter toxin. Malate-driven Ca/sup 2 +/ transport in T mitochondria was frequently more inhibited by 5 nanograms per milliliter toxin than succinate or ...

1984-04-01

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Influence of some chemical compounds on germination and early seedling growth of two range species under allelopathic conditions

The growth and development of rice (Oryzae sativa) seedlings was shown to be regulated epigenetically by a fungal endophyte. In contrast to un-inoculated (nonsymbiotic) plants, endophyte...Full Text Available

2009-03-01

56

British Library Electronic Table of Contents (United Kingdom)

Seed priming technique has been known to improve germination and seedling emergence under different environment stresses. The objective of this study was to evaluate the effectiveness of seed priming in improving the seed germination and seedling vigor of Agropyron elongatum and Bromus inermis in response to five concentrations of the allelopathic extract of Thymus kotschyanus (0, 5%, 25%, 50% and 75%) under laboratory conditions. Pretreatments included gibberellic acid (250, 500 and 1000 ppm), potassium nitrate (0.1%, 0.2% and 0.3%) and salicylic acid (100, 200 and 300 mg/L). This experiment was carried out as a factorial experiment based on a completely randomized design with four replications. The results showed that seed germination, germination speed and seedling vigor were significan...

2011-01-01

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Utilization of a "1"3C enriched tracer for carbon flux studies in a tropical Eucalyptus exserta forest

Sugar uptake and starch biosynthesis by slices of developing maize endosperm

Severe depletion of nutrients through removal of the above ground litter caused a cessation of growth of a Eucalyptus exserta forest in tropical China. Since there is no above ground input of C in this forest, microbial biomass (C_m_i_c) and soil organic C (C_o_r_g) are maintained by the below ground input only. By determining the maintenance requirement of the soil microflora, it should be possible to estimate the below ground production of this forest. To check this hypothesis the authors performed an experiment with labelled C. Since large scale production and field application of "1"4C labelled Eucalyptus litter were not feasible, 'naturally labelled' C_4 plant litter (Zea mays) was used. Maize litter has a #delta#"1"3C of -12.7 per mille as compared with a #delta#"1"3C of -30.7 per mille for Eucalyptus leaf litter. The "1"3C abundance is used to determine the amount of maize C in each of the soil layers. Investigations were made of how ...

1990-10-01

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Soil to plant transfer of "2"3"8U, "2"2"6Ra and "2"3"2Th on a uranium mining-impacted soil from southeastern China

{sup 14}C-Sugar uptake and incorporation into starch by slices of developing maize (Zea mays L.) endosperm were examined and compared with sugar uptake by maize endosperm-derived suspension cultures. Rates of sucrose, fructose, and D- and L-glucose uptake by slices were similar, whereas uptake rates for these sugars differed greatly in suspension cultures. Concentration dependence of sucrose, fructose, and D-glucose uptake was biphasic (consisting of linear plus saturable components) with suspension cultures but linear with slices. These and other differences suggest that endosperm slices are freely permeable to sugars. After diffusion into the slices, sugars were metabolized and incorporated into starch. Starch synthesis, but not sugar accumulation, was greatly reduced by 2.5 millimolar p-chloromercuribenzenesulfonic acid and 0.1 millimolar carbonyl cyanide m-chlorophenylhydrazone. Starch synthesis was dependent on kernel age and incubation ...

1990-11-01

59

Projected change in climate thresholds in the Northeastern U.S.: implications for crops, pests, livestock, and farmers

Both soil and plant samples of nine different plant species grown in soils from southeastern China contaminated with uranium mine tailings were analyzed for the plant uptake and translocation of "2"3"8U, "2"2"6Ra and "2"3"2Th. Substantial differences were observed in the soil-plant transfer factor (TF) among these radionuclides and plant species. Lupine (Lupinus albus) exhibited the highest uptake of "2"3"8U (TF value of 3.7x10"-"2), while Chinese mustard (Brassica chinensis) had the least (0.5x10"-"2). However, in the case of "2"2"6Ra and "2"3"2Th, the highest TFs were observed for white clover (Trifolium pratense) (3.4x10"-"2) and ryegrass (Lolium perenne) (2.1x10"-"3), respectively. "2"3"2Th in the tailings/soil mixture was less available for plant uptake than "2"2"6Ra or "2"3"8U, and this was especially evident for Chinese mustard and corn (Zea mays). The root/shoot (R/S) ratios obtained for different plants and radionuclides shown that ...

1000-01-01

60

Agronomic evaluation of Beirut municipal waste compost

Most prior climate change assessments for U.S. agriculture have focused on major world food crops such as wheat and maize. While useful from a national and global perspective, these results are not particularly relevant to the Northeastern U.S. agriculture economy, which is dominated by dairy milk production, and high-value horticultural crops such as apples (Malus domestica), grapes (vitis vinifera), sweet corn (Zea mays var. rugosa), cabbage (Brassica oleracea var. capitata), and maple syrup (sugar maple, Acer saccharum). We used statistically downscaled climate projections generated by the HadCM3 atmosphere-ocean general circulation model, run with Intergovernmental Panel on Climate Change future emissions scenarios Alfi (higher) and B1 (lower), to evaluate several climate thresholds of direct relevance to agriculture in the region. A longer (frostfree) growing season could create new opportunities for farmers with enough capital to take ...

2008-07-01

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61

A Wheat Homolog of MOTHER OF FT AND TFL1 Acts in the Regulation of Germination.

The disposal of municipal solid waste in an environmentally sound manner is a major problem worldwide. The composting of the organic fraction of refuse transforms it into soil amendment that can be recycled on agricultural lands. In order to promote the use of compost among farmers, agronomic investigations have to evaluate the impact of its use on soil properties and plant growth. In a greenhouse experiment, a sample of locally produced compost was applied to a sandy clay soil at rates equivalent to 0, 25, 50, 100, and 200 t/ha with supplemental addition of NH_4 NO_3 at levels equivalent to 0, 25, 50 and 100 Kg N/ha. Barley (Hordium vulgare L.) and corn (Zea mays L. indentata) were grown as indicator crops and soil properties were determined over a period of 150 days. Plant growth was affected by N starvation until the compost was stabilized in the soil. Nitrogen starvation persisted for a longer period with increasing applications of compost. ...

62

PIXE analysis of trace elements in relation to chlorophyll concentration in Plantago ovata Forsk

Seed dormancy is an adaptive mechanism and an important agronomic trait. Temperature during seed development strongly affects seed dormancy in wheat (Triticum aestivum) with lower temperatures producing higher levels of seed dormancy. To identify genes important for seed dormancy, we used a wheat microarray to analyze gene expression in embryos from mature seeds grown at lower and higher temperatures. We found that a wheat homolog of MOTHER OF FT AND TFL1 (MFT) was upregulated after physiological maturity in dormant seeds grown at the lower temperature. In situ hybridization analysis indicated that MFT was exclusively expressed in the scutellum and coleorhiza. Mapping analysis showed that MFT on chromosome 3A (MFT-3A) colocalized with the seed dormancy quantitative trait locus (QTL) QPhs.ocs-3A.1. MFT-3A expression levels in a dormant cultivar used for the detection of the QTL were higher after physiological maturity; this increased expression correlated with a single nucleotide ...

2011-09-01

63

Mutation breeding in kalmia juvenile trees derived from shoot tip cultare and kobus seedlings

Plantago ovata Forsk - an economically important medicinal plant - was analyzed for trace elements and chlorophyll in a study of the effects of gamma radiation on physiological responses of the seedlings. Proton-induced X-ray emission (PIXE) technique was used to quantify trace elements in unirradiated and gamma-irradiated plants at the seedling stage. The experiments revealed radiation-induced changes in the trace element and chlorophyll concentrations.

2010-03-15

64

Soil chemistry and nutrition of North American spruce-fir stands: Evidence of recent change

Juvenile trees of kalmia derived from shoot tip culture, and seedlings of kobus were irradiated with #gamma#-rays. In kalmia, two mutation lines were obtained which had narrowlong leaves. In kobus two mutation lines were obtained. One mutation line has flowers with 7 to 13 petals. Another mutation line has yellow-green variegated leaves. (author).

65

Coordinated responses of phytochelatin synthase and metallothionein genes in black mangrove, Avicennia germinans, exposed to cadmium and copper

One set of hypotheses offered to explain the decline of red spruce (Picea rubens Sarg.) in eastern North America focuses on the effect of acidic deposition on soil chemistry changes that may affect nutrient availability and root function. Long-term soils data suggests that soil acidification has occurred in some spruce stands over the past 50 yr, with plant uptake and cation leaching both contributing to the loss of cations. Studies of tree ring chemistry also have indicated changes in Ca/Al and Mg/Al ratios in red spruce wood, suggesting increases in the ionic strength of soil solution. Irrigation studies using strong acid inputs have demonstrated accelerated displacement of base cations from upper horizons. Spruce-fir (Abies spp.) nutrient budgets indicate that current net Ca and Mg leaching loss rates are of the same order of magnitude as losses to whole tree harvest removals, spread out over a 50-yr rotation. For most cations, red spruce foliar nutrient levels ...

66

Coordinated responses of phytochelatin synthase and metallothionein genes in black mangrove, Avicennia germinans, exposed to cadmium and copper

To evaluate the role of phytochelatins and metallothioneins in heavy metal tolerance of black mangrove Avicennia germinans, 3-month-old seedlings were exposed to cadmium or copper for 30 h, under hydroponic conditions. Degenerate Mt2 and PCS primers were synthesized based on amino acid and nucleotide alignment sequences reported for Mt2 and PCS in other plant species found in GenBank. Total RNA was isolated from A. germinans leaves and two partial fragments of metallothionein and phytochelatin synthase genes were isolated. Gene expression was evaluated with reverse transcripatase-polymerase chain reaction (RT-PCR) amplification technique. Temporal analysis showed that low Cd{sup 2+} and Cu{sup 2+} concentrations caused a slight (but not significant) increase in AvMt2 expression after a 16 h exposure time, while AvPCS expression showed a significant increase under the same conditions but only after 4 h. Results strongly suggest that the rapid increase in AvPCS ...

2007-08-01

67

Amelioration of phytotoxic effects of Cd on mung bean seedlings by gluconic acid secreting rhizobacterium Enterobacter asburiae PSI3 and implication of role of organic acid

To evaluate the role of phytochelatins and metallothioneins in heavy metal tolerance of black mangrove Avicennia germinans, 3-month-old seedlings were exposed to cadmium or copper for 30 h, under hydroponic conditions. Degenerate Mt2 and PCS primers were synthesized based on amino acid and nucleotide alignment sequences reported for Mt2 and PCS in other plant species found in GenBank. Total RNA was isolated from A. germinans leaves and two partial fragments of metallothionein and phytochelatin synthase genes were isolated. Gene expression was evaluated with reverse transcripatase-polymerase chain reaction (RT-PCR) amplification technique. Temporal analysis showed that low Cd"2"+ and Cu"2"+ concentrations caused a slight (but not significant) increase in AvMt2 expression after a 16 h exposure time, while AvPCS expression showed a significant increase under the same conditions but only after 4 h. Results strongly suggest that the rapid increase in AvPCS expression ...

2007-08-01

68

British Library Electronic Table of Contents (United Kingdom)

Mung bean seedlings inoculated with Enterobacter asburiae PSI3, a gluconic acid-producing rhizosphere isolate, enhanced plant growth in the presence of phytotoxic levels of Cd2+ in gnotobiotic pot experiments as compared to the uninoculated Cd-treated plants. Addition of organic acids to Cd-stressed seedlings promoted root elongation. Hematoxylin competition assays showed that organic acids could displace Cd2+ from the Cd2+: hematoxylin complex in the same order of effectiveness as was found for restoration of root net elongation viz. oxalate?>?malate?>?succinate while gluconate was effective at higher concentrations. Root associated Cd2+, assessed by hematoxylin staining of roots was found to be reduced when roots were treated with organic acid. Cd stress increased antioxidant enzymes suc...

2008-01-01

69

Transport of Purine and Pyrimidine Bases and Nucleosides from Endosperm to Cotyledons in Germinating Castor Bean Seedlings 1

The Metabolism of Oat Leaves during Senescence

During germination and early growth of castor bean (Ricinus communis), all cellular constituents of the endosperm are eventually transferred to the growing embryo. The present results...Full Text Available

1983-10-01

70

Stimulation of Phosphatidylethanolamine Exchange by Castor Bean Cytosol Proteins ¹

When the detached first leaves of green or etiolated oat (Avena sativa cv. Victory) seedlings senesce in the dark, their oxygen consumption shows a large increase, beginning after 24...Full Text Available

1974-09-01

71

STIMPY mediates cytokinin signaling during shoot meristem establishment in Arabidopsis seedlings

Cytosol proteins prepared from castor bean endosperm (4-day-old) seedlings stimulate the exchange of [³H]phosphatidylethanolamine between liposomes and mitochondria. The acceleration of the...Full Text Available

1980-02-01

72

Proteinases and Enzyme Stability in Crude Extracts of Castor Bean Endosperm ¹

The establishment of the primary meristems through proliferation after germination is essential for plant post-embryonic development. Cytokinins have long been considered a key regulator of...Full Text Available

2010-02-15

73

Phytochrome-mediated Electric Potential Changes in Oat Seedlings ¹

The stability of catalase, fumarase, and isocitrate lyase from deliberately broken organelles in crude extracts from endosperm tissue of castor bean seedlings has been examined. These enzymes are relatively...Full Text Available

1981-03-01

74

Nitrogen Fixation, Nodule Development, and Vegetative Regrowth of Alfalfa (Medicago sativa L.) following Harvest ¹

Brief exposures to red light induce far red-reversible changes of 5 to 10 millivolts magnitude in the upper 1 centimeter of etiolated Avena coleoptiles. The changes begin within 15...Full Text Available

1972-12-01

75

Light and Dark Controls of Nitrate Reduction in Wheat (Triticum aestivum L.) Protoplasts ¹

Nitrogenase-dependent acetylene reduction, nodule function, and nodule regrowth were studied during vegetative regrowth of harvested (detopped) alfalfa (Medicago sativa L.) seedlings...Full Text Available

1979-07-01

76

Inhibitory Action of Auxin on Root Elongation Not Mediated by Ethylene

Protoplasts were isolated from the leaves of nitrate-cultured wheat (Triticum aestivum L. var. Frederick) seedlings. When incubated in the dark, protoplasts accumulated nitrite under...Full Text Available

1982-02-01

77

Diterpene Biosynthesis in Maize Seedlings in Response to Fungal Infection ¹

The inhibitory effects of indole-3-acetic acid (IAA) and 1-aminocyclopropane-1-carboxylic acid (ACC) on elongation growth of pea (Pisum sativum L.) seedling roots were investigated...Full Text Available

1989-09-01

78

Dependency of Nitrate Reduction on Soluble Carbohydrates in Primary Leaves of Barley under Aerobic Conditions 1

A cell-free system which catalyzes the biosynthesis of terpene hydrocarbons when supplemented with mevalonate, Mn²⁺, and ATP was prepared from the scutellum-embryonic axis region of maize...Full Text Available

1979-09-01

79

Cumulative effects of protracted irradiation of Chernobyl exclusive zone plants

Nitrate reduction was studied as a function of carbohydrate concentration in detached primary leaves of barley (Hordeum vulgare L. cv Numar) seedlings under aerobic conditions in light...Full Text Available

1984-07-01

80

Cottonseed Malate Synthase ¹

The biological and radiobiological peculiarities of seeds and seedlings of the Rumex confertus and Lupinus polycolor plants, which grown during several generations in plots with different level of radionuclide pollution of the Chernobyl exclusive zone have been investigated.

2005-01-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

81

Characteristics of Galacturonic Acid Oligomers as Elicitors of Casbene Synthetase Activity in Castor Bean Seedlings 1

Malate synthase (EC 4.1.3.2), an enzyme unique to the glyoxylate cycle, was purified to homogeneity from cotyledons of 72-hours, darkgrown cotton (Gossypium hirsutum L.) seedlings....Full Text Available

1987-08-01

82

Biochemical Characterization of Soybean Mutants Lacking Constitutive NADH:Nitrate Reductase ¹

Partial digestion of polygalacturonic acid with polygalacturonase isolated from Rhizopus stolonifer produces a mixture of α-1,4-d-galacturonide oligomers which act...Full Text Available

1984-04-01

83

Auxin Biosynthesis during Seed Germination in Phaseolus vulgaris¹

Two nitrate reductase (NR) mutants were selected for low nitrate reductase (LNR) activity by in vivo NR microassays of M₂ seedlings derived from nitrosomethylurea-mutagenized...Full Text Available

1986-06-01

84

Abscisic Acid Inhibition of Radicle Emergence But Not Seedling Growth Is Suppressed by Sugars1

The relative roles of de novo biosynthesis of indoleacetic acid (IAA) and IAA conjugates stored in mature seeds (Phaseolus vulgaris L.) in supplying auxin to germinating bean seedlings...Full Text Available

1992-09-01

85

Gene expression profiles deciphering rice phenotypic variation between Nipponbare (Japonica) and 93-11 (Indica) during oxidative stress.

Low concentrations of sugars altered the sensitivity of seed germination to inhibition by exogenous abscisic acid (ABA). Germination of wild-type and ABA-insensitive (abi) Arabidopsis...Full Text Available

2000-04-01

86

Fluxes of H+ and K+ in corn roots

Rice is a very important food staple that feeds more than half the world's population. Two major Asian cultivated rice (Oryza sativa L.) subspecies, japonica and indica, show significant phenotypic variation in their stress responses. However, the molecular mechanisms underlying this phenotypic variation are still largely unknown. A common link among different stresses is that they produce an oxidative burst and result in an increase of reactive oxygen species (ROS). In this study, methyl viologen (MV) as a ROS agent was applied to investigate the rice oxidative stress response. We observed that 93-11 (indica) seedlings exhibited leaf senescence with severe lesions under MV treatment compared to Nipponbare (japonica). Whole-genome microarray experiments were conducted, and 1,062 probe sets were identified with gene expression level polymorphisms between the two rice cultivars in addition to differential expression under MV treatment, which were assigned as Core ...

2010-01-08

87

Propagation of jarrah (Eucalyptus marginata) by organ and tissue culture

We report here on an experimental system that utilizes ion-selective microelectrodes to measure the electrochemical potential gradients for H"+ and K"+ ions within the unstirred layer near the root surface of both tact 4-day-old corn seedlings and corn root segments. Analysis of the steady state H"+ and K"+ electrochemical potential gradients provided a simultaneous measure of the fluxes crossing a localized region of the root surface. Net K"+ influx values obtained by this method were compared with unidirectional K"+ ("8"6Rb"+) influx kinetic data; at any particular K"+ concentration, similar values were obtained by either technique. The ion-specific microelectrode system was then used to investigate the association between net H"+ efflux and net K"+ influx. Although the computed H"+K"+ stoichiometry is dependent upon the choice of diffusion coefficients, the values obtained were extremely variable, and net K"+ influx rarely appeared to be charge-balanced by H"+ ...

1987-01-01

88

Mechanical wounding induces a nitrosative stress by down-regulation of GSNO reductase and an increase in S-nitrosothiols in sunflower (Helianthus annuus) seedlings

Micropropagation methods are described for the production of clonal lines from Eucalyptus marginata (jarrah) seedlings. Nodal explants from mature trees can also yield shoot cultures, but a high frequency of contamination occurs among such explants. Uncontaminated callus cultures can be produced from mature trees by culturing stamen filaments and shoots can subsequently be regenerated from this callus. The rooting percentage of shoot cultures from either nodes or stamen callus of mature trees is low compared with that from seedling explants. Considerable variation was observed between trees in the ability of stamen callus to regenerate shoots and in the frequency of rooting. (Refs. 27)

1982-01-01

89

British Library Electronic Table of Contents (United Kingdom)

Nitric oxide (NO) and related molecules such as peroxynitrite, S-nitrosoglutathione (GSNO), and nitrotyrosine, among others, are involved in physiological processes as well in the mechanisms of response to stress conditions. In sunflower seedlings exposed to five different adverse environmental conditions (low temperature, mechanical wounding, high light intensity, continuous light, and continuous darkness), key components of the metabolism of reactive nitrogen species (RNS) and reactive oxygen species (ROS), including the enzyme activities L-arginine-dependent nitric oxide synthase (NOS), S-nitrosogluthathione reductase (GSNOR), nitrate reductase (NR), catalase, and superoxide dismutase, the content of lipid hydroperoxide, hydrogen peroxide, S-nitrosothiols (SNOs), the cellular level of N...

2011-01-01

90

Ergosterol analyses of oil palm seedlings and plants infected with Ganoderma

British Library Electronic Table of Contents (United Kingdom)

Basal stem rot of oil palm (OP) by Ganoderma boninense is of major economic concern and it is the predominant disease of OP in SE Asia. Also, other plantation crops are affected by Ganoderma. The early detection of symptoms is crucial for control, although effective methods remain elusive. Ergosterol is the principal sterol of fungi and plays an essential role in the cell membrane and other cellular constituents. The analysis of ergosterol is useful for fungal detection in solid plant substrates. The present report compares ergosterol concentration in sound and decayed OP seedlings and mature plants using HPLC with diode array detection. The disease of OP requires to be considered as a white rot process where fungal biomass will increase from a low to high level as the infection progresses...

2011-01-01

91

Differences in morphology, gas exchange and root hydraulic conductance before planting in Pinus canariensis seedlings growing under different fertilization and light regimes

British Library Electronic Table of Contents (United Kingdom)

As the main forestry species in the Canary Islands (Spain), Pinus canariensis is frequently used in afforestation programs. Several nursery techniques are commonly employed to modify its morphology and physiology with the aim of improving post-planting survival and growth. In this work, we studied how fertilization and light regime treatments applied during the nursery period modify biomass allocation patterns and produce effects in gas exchange and root hydraulic conductance. Seedlings were grown for a 6-month period in the nursery under two light regimes (full sunlight and 40% PAR reduction), and three fertilization levels were applied in each light regime. Morphology, biomass allocation patterns, leaf gas exchange and hydraulic conductance of the whole root system were evaluated. Fertil...

2010-01-01

92

The Isolation and Partial Characterization of a Membrane Fraction Containing Phytochrome ¹²

The Decrease in Auxin Polar Transport Down the Lupin Hypocotyl Could Produce the Indole-3-Acetic Acid Distribution Responsible for the Elongation Growth Pattern

If 4-day-old dark-grown zucchini squash seedlings (Cucurbita pepo L. cv. Black Beauty) are exposed briefly to red light, subsequent cell fractionation yields about 40% of the total...Full Text Available

1974-09-01

93

Reducing Rice Seed Storage Protein Accumulation Leads to Changes in Nutrient Quality and Storage Organelle Formation¹^[W]^[OA]

The variation of indole-3-acetic acid (IAA) transport along Lupinus albus L. hypocotyls was studied using decapitated seedlings and excised sections. To confirm that the mobile species...Full Text Available

1992-09-01

94

Metabolism and Binding of ¹⁴C-Maleic Hydrazide ¹

Rice (Oryza sativa) seed storage proteins (SSPs) are synthesized and deposited in storage organelles in the endosperm during seed maturation as a nitrogen source for germinating seedlings....Full Text Available

2010-12-01

95

Isolation and Initial Characterization of Constitutive Nitrate Reductase-Deficient Mutants NR328 and NR345 of Soybean (Glycine max) ¹

Maleic hydrazide (MH) is taken up by corn and pea seedling roots and bound to some material which is insoluble in 80% ethanol or 5% trichloroacetic acid. ¹⁴C-MH is stable metabolically; chromatography...Full Text Available

1970-01-01

96

Induction of Porphyrin Synthesis in Etiolated Bean Leaves by Chelators of Iron ¹²

Two nitrate reductase deficient mutants of soybean (Glycine max [L.] Merr. cv Bragg) were isolated from approximately 10,000 M₂ seedlings, using a direct enzymic assay in...Full Text Available

1986-06-01

97

In vitro activation of sigma-aminolevulinate dehydratase from far-red irradiated radish (Raphanus sativus L. ) seedlings by thioredoxin f

Primary leaves of 7- to 9-day-old etiolated seedlings of Phaseolus vulgaris L. var. Red Kidney infiltrated in darkness with aqueous solutions of α, α′-dipyridyl,...Full Text Available

1974-02-01

98

In Vivo Determination of Parameters of Nitrate Utilization in Wheat (Triticum aestivum L.) Seedlings Grown with Low Concentration of Nitrate in the Nutrient Solution ¹

sigma-Aminolevulinate dehydratase has been found to be activated in vitro by dithiotreitol and factors isolated from radish cotyledons grown under continuous far-red light. Cross experiments, between fructose 1-6 bisphosphatase system, and sigma-aminolevulinate dehydratase, show that these factors are functionally identical to thioredoxin f.

1983-10-01

99

Overexpression of a maize dehydrin gene, ZmDHN2b, in tobacco enhances tolerance to low temperature

Six genotypes of winter wheat (Triticum aestivum L.) differing in grain protein concentration were grown on a nutrient solution containing low concentrations of NO₃⁻...Full Text Available

1981-12-01

100

British Library Electronic Table of Contents (United Kingdom)

Dehydrins, a subfamily of group 2 LEA proteins, are intrinsically unstructured plant proteins that accumulate in the late stages of seed development and in vegetative tissues subjected to water deficit, salinity, low temperature, or abscisic acid treatment. In this study, we isolated and characterized ZmDHN2b, a maize dehydrin gene. The genomic organization of the ZmDHN2b gene and its expression in maize seedlings were analyzed. To investigate the function of ZmDHN2b, we generated transgenic tobacco plants constitutively overexpressing ZmDHN2b. Ectopic expression of ZmDHN2b in tobacco accelerated seed germination and seedling growth at 15?C. Furthermore, ZmDHN2b-overexpressing lines had lower levels of cold-induced malondialdehyde and less electrolyte leakage than wild-type tobacco at 4?C....

2011-01-01

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101

Flows for Floodplain Forests: A Successful Riparian Restoration

Vegetation re-establishment on a hardwood forest site denuded by brine

This peer-reviewed article from Bioscience journal is about restoring the Truckee river.Throughout the 20th century, the Truckee River that flows from Lake Tahoe into the Nevada desert was progressively dammed and dewatered, which led to the collapse of its aquatic and riparian ecosystems. The federal designation of the endemic cui-ui sucker (Chasmistes cujus) as endangered prompted a restoration program in the 1980s aimed at increasing spring flows to permit fish spawning. These flows did promote cui-ui reproduction, as well as an unanticipated benefit, the extensive seedling recruitment of Fremont cottonwood (Populus fremontii) and sandbar willow (Salix exigua). Recruitment was scattered in 1983 but extensive in 1987, when the hydrograph satisfied the riparian recruitment box model that had been developed for other rivers. That model was subsequently applied to develop flow prescriptions that were implemented from 1995 through 2000 and enabled further ...

2003-07-01

102

Propagation of jarrah (Eucalyptus marginata) by organ and tissue culture

Brine from active oil wells seeped through the soil of a forested site in north-western Pennsylvania and killed all vegetation in its path, leaving the affected area unproductive and unsightly. After the brine source was eliminated, herbaceous plants, shrubs and forest tree seedlings became established and developed rapidly. Establishment began in the first year and by Year 4 the site had developed into a healthy young forest. Results show that Allegheny hardwood forest sites damaged by brine water will rapidly revegetate once the brine water discharge is stopped if there is a seed supply and if the area is fenced to exclude deer. 3 figs., 12 refs.

1989-04-01

103

Proceedings of the third annual better reclamation with trees conference

Methods are described for the production of callus and subsequent shoot and root induction and multiplication using stamen filaments, nodes of young stems of mature trees or cotyledon petioles. A high frequency of contamination occurred using nodal sections from mature trees, whereas up to 100% sterility was obtained with cotyledons and stamens. The rooting % of shoot cultures from nodes or stamen callus was low compared with that of shoots from seedling callus. Considerable variation was observed between clones from different trees in their ability to produce shoots and roots. 27 references

1982-01-01

104

Effect of synthetic detergents on germination of fern spores

The twenty-three papers presented at this conference discussed requirements of land reclamation under the Federal surface mining regulations, evaluation techniques for assessing reclaimed land, spoil bank chemistry and its change with time, establishment techniques (vegetative propagation, containerized seedlings, nurse vegetation, nitrogen-fixing tree species, direct seeding, and general cultivation techniques), and results from early land reclamation trials. Twenty-two papers have been abstracted separately. 291 references, 16 figures, 80 tables.

1983-01-01

105

Clones to replace forest seedlings

Synthetic detergents constitute one of the most important water pollutants by contaminating the lakes and rivers through domestic and industrial use. Considerable information is now available for the adverse effects of detergents an aquatic fauna including fish, algae, and higher aquatic plants. Marked inhibition of germination in orchids and brinjals and of seedlings growth in raddish suggest that rapidly growing systems could be sensitive to detergent polluted water. The present study of the effect of linear alkyl benzene sulphonate on germination of the spores of a fern, Diplazium esculentum aims at the understanding of the effects of water pollution on pteridophytes and the development of spore germination assay for phytoxicity evaluation.

1986-12-01

106

The enhanced genomic instability was induced by alpha particle and low-energy ion irradiation in somatic cells of Arabidopsis thaliana

A considerable time can elapse between initial selection of candidate plus trees and harvest of improved seed. The technique showing the greatest promise of shortening this interval is vegetative propagation. Stock plants are grown for two years from seed before the first propagation cycle begins and each plant can be bulked-up 300-500 times over two cycles. An initial stock of 2500 superior Sitka Spruce plants can be multiplied to yield between 300,000 and 750,000 rooted cuttings for forest use within four years from the start of propagation.

1985-01-01

107

Photobiology and photosynthesis

Although low-energy ion radiation has been proven to have a wide range of biological effects and led to fruitful achievements as a new mutagenic source for genetic modification, there still exist some disputes about its mutagenic mechanisms because of its short-penetrating property. In present research, Arabidopsis thaliana transgenic for GUS recombination substrate was used to evaluate the genomic instability induced by irradiations of alpha particle (3.3MeV) and Low-energy-Argon ion (30 KeV). A pronounced effects of alpha particle irradiation to Arabidopsis thaliana seedlings and Argon ion irradiation to seeds on the somatic homologous recombination frequency (sHRF) were reported. The sHRFs increased 1.88-fold and 2.42-fold, respectively, which indicated that the short-penetrating radiation could effectively induce the plant genomic instability in either dry seeds or seedlings with active metabolism. The local alpha particle irradiation of ...

2008-08-12

108

British Library Electronic Table of Contents (United Kingdom)

To test the hypothesis that leaf level photosynthetic related traits might confer late successionals a competitive advantage over early successionals in low light growth conditions, steady photosynthetic assimilation and dynamic photosynthetic induction related traits were examined in low light grown seedlings with contrasting successional status. Compared with the early successionals, late successionals as a group significantly exhibited lower leaf gas exchange rates. While late successionals required a longer time to respond to simulated sunflecks, they had lower rates of induction losses after sunflecks. Such photosynthetic induction traits allowed late successionals to more effectively utilize subsequent sunflecks. It was observed that plants with lower gas exchange rates responded mor...

2011-01-01

109

Identification of Semiochemicals Released by Cotton, Gossypium hirsutum, Upon Infestation by the Cotton Aphid, Aphis gossypii

British Library Electronic Table of Contents (United Kingdom)

The cotton aphid, Aphis gossypii (Homoptera: Aphididae), is increasing in importance as a pest worldwide since the introduction of Bt-cotton, which controls lepidopteran but not homopteran pests. The chemical ecology of interactions between cotton, Gossypium hirsutum (Malvaceae), A. gossypii, and the predatory lacewing Chrysoperla lucasina (Neuroptera: Chrysopidae), was investigated with a view to providing new pest management strategies. Behavioral tests using a four-arm (Pettersson) olfactometer showed that alate A. gossypii spent significantly more time in the presence of odor from uninfested cotton seedlings compared to clean air, but significantly less time in the presence of odor from A. gossypii infested plants. A. gossypii also spent significantly more time in the presence of heads...

2011-01-01

110

Growth promotion and induction of resistance in tomato plant against Xanthomonas euvesicatoria and Alternaria solani by Trichoderma spp.

British Library Electronic Table of Contents (United Kingdom)

In tomato crop, the induction of resistance emerges as an important alternative for achieving the reduction of chemicals in disease control. This study aimed to evaluate the ability of 28 Trichoderma isolates to promote the growth of tomato seedlings and to induce systemic resistance (ISR) against Xanthomonas euvesicatoria and Alternaria solani, the causal agents of bacterial spot and early blight, respectively. Twelve isolates promoted the increase of plant dry matter mass (DMM) above 100%, showing the great potential of these strains. All isolates were able to colonize the root system of tomato plants. The plant growth-promoting isolates were further evaluated for potential elicitation of ISR. Treatment of the soil with all Trichoderma isolates provided protection in tomato plants from 2...

2011-01-01

111

Effects of acute and chronic gamma irradiation on the shoot apex and general morphology of Lupinus albus L

Changes in Energy Metabolism and Antioxidant Defense Systems During Seed Germination of the Weed Species Ipomoea triloba L. and the Responses to Allelochemicals

Lupinus albus L. plants were grown from seeds and irradiated at various stages of development with acute or chronic gamma rays. All plants were greenhouse grown (pre- and post-irradiation) and allowed to proceed through their normal growth cycle. The purpose of these experiments was to establish a Plactochron Index for Lupinus albus L. and to determine the effects of acute and chronic irradiation on development at the macro and microscopic levels. A Plastochron Index was calculated and used as an indirect time scale to evaluate the effects of gamma rays from a common base line. Acute radiation treatment lasted for a period of a few days, whereas chronic treatment was initiated at the seedling stage and lasted for the entire growth season. Vegetative plants were used to study the effects of acute radiation exposure on apical meristem morphology, Plastochron Index, phyllatoxis and gross morphology.

1980-01-01

112

British Library Electronic Table of Contents (United Kingdom)

The relationships between changes in energy metabolism and the antioxidant defense system in the weed species Ipomoea triloba L. during seed germination and early seedling growth were investigated. The effects of some common allelochemicals on these parameters also were studied. Respiratory activity and the activities of alcohol dehydrogenase, superoxide dismutase, catalase, guaicol peroxidase, ascorbate peroxidase, glutathione reductase, and lipoxygenase were measured. Mitochondrial oxidative phosphorylation resumed shortly after the seed imbibition period, as indicated by considerable KCN-sensitive respiratory activity in embryos of I. triloba. The occurrence of superoxide dismutase, catalase, guaicol peroxidase, and lipoxygenase activities in the embryos, along with significant KCN-inse...

2011-01-01

113

Abscisic Acid in Soil Facilitates Community Succession in Three Forests in China

British Library Electronic Table of Contents (United Kingdom)

Plants release secondary metabolites into the soil that change the chemical environment around them. Exogenous abscisic acid (ABA) is an important allelochemical whose role in successional trajectories has not been examined. We hypothesized that ABA can accumulate in the soil through successional processes and have an influence on forest dynamics. To this end, we investigated the distribution of ABA in forest communities from early to late successional stages and the response of dominant species to the gradient of ABA concentrations in three types of forests from northern to southern China. Concentrations of ABA in the soils of three forest types increased from early to late successional stages. Pioneer species? litters had the lowest ABA content, and their seed germination and seedling ea...

2011-01-01

114

Improved salt tolerance and seed cotton yield in cotton (Gossypium hirsutum L.) by transformation with betA gene for glycinebetaine synthesis

British Library Electronic Table of Contents (United Kingdom)

Homozygous transgenic cotton (Gossypium hirsutum L.) plants that accumulated glycinebetaine (GB) in larger quantities were more tolerant to salt than wild-type (WT) plants. Four transgenic lines, namely 1, 3, 4, and 5, accumulated significantly higher levels of GB than WT plants did both before and after salt stress. At 175 and 275?mM NaCl, seeds of all the transgenic lines germinated earlier and recorded a higher final germination percentage, and the seedlings grew better, than those of the WT. Under salt stress, all the lines showed some characteristic features of salt tolerance, such as higher leaf relative water content (RWC), higher photosynthesis, better osmotic adjustment (OA), lower percentage of ion leakage, and lower peroxidation of the lipid membrane. Levels of endogenous GB in ...

2011-01-01

115

Biological control of take-all in wheat by endophytic Bacillus subtilis E1R-j and potential mode of action

British Library Electronic Table of Contents (United Kingdom)

The bacterial strain E1R-j, isolated as an endophyte from wheat roots, exhibited high antifungal activity to Gaeumannomyces graminis var. tritici (Ggt). Strain E1R-j was identified as Bacillus subtilis based on morphological, physiological and biochemical methods as well as on 16S rDNA analysis. This strain inhibited mycelium growth in vitro of numerous plant pathogenic fungi, especially of Ggt, Coniothyrium diplodiella, Phomopsis sp. and Sclerotinia sclerotiorum. In greenhouse experiments, soil drenches with cell densities of 106, 109 and 1012CFU ml-1 E1R-j reduced significantly take-all disease, caused by Ggt, in wheat seedling by 62.6%, 68.6% and 70.7%, respectively, compared to the inoculated control, 4weeks after sowing. Growth parameters such as lengths and fresh weights of roots and...

2009-01-01

116

On the impact of low power density microwaves in some living tissues

Military workingn> dogs may be a sentinel for human cancer.

The biomedical and ecological interest for the microwave impact on the Earth biosphere is continuously increased since the industrial, military and communication activities strongly contribute to the electromagnetic stress of living bodies. In the next the authors present some of the main results obtained regarding the microwave exposure of various types of biological material: bacteria, fungi, young plant seedlings, dry seeds, animal tissues. The electromagnetic exposure was carried out in open space in well controlled environmental conditions by using 10.75 GHz/1 m W cm{sup -2} microwaves. Biochemical assays and cytogenetic tests have been carried out to reveal the changes induced post irradiation. The response of some pathogen bacteria, have been emphasized by means of turbidimetric measurements - the stimulatory effect being noticed at the level of the microbial population density (the stimulation of the human body microbial flora seems to be one of the side ...

2006-07-01

117

Irradiation damage in superconductors

PMID:2348465

1990-06-20

118

What is a medical experiment?

Most superconductors are quite sensitive to irradiation defects. Critical temperatures may be depressed, critical currents may be increased, by irradiation, but other behaviours may be encountered. In compounds, the sublattice in which defects are created is of significant importance. 24 refs.

1989-05-08

119

May 16, 1995 Colloquium Lecture - NASA

Innovative therapy may appear to coincide with medical experimentation, raising ethical and legal issues, for instance on informed consent and institutional review. Medical treatments may be classified,...Full Text Available

1975-10-04

120

Localised breast cancers may have systemic influences on skin and hair

May 16, 1995 ... She received an honorary doctorate of science from Northern Arizona University in 1990. With her husband, she received the Rittenhouse Medal ...

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121

Exploitative and Hierarchical Antagonism in a Cooperative Bacterium

HypothesisBiomarkers, commonly expressed in breast cancer cells, may be correlated with their expression in breast skin of the same subjects.MethodsThe...Full Text Available

2007-02-01

122

Experts worry US may lose leadership in particle physics

Social organisms that cooperate with some members of their own species, such as close relatives, may fail to cooperate with other genotypes of the same species. Such noncooperation may take the form...Full Text Available

2005-11-01

123

CERN Multimedia

"Physics in the United States is in a crisis that the country may lose the leadership in basic particle research in coming years, a report of the National Research Council warned." (1 page)

2006-01-01

124

DESIGN STUDY OF CONTINUOUSLY VARIABLE ROLLER CONE - NASA Technical ...

Vegetative propagation of hybrid aspen by bud grafting

pedel preo,ure. (_PD). VSO may be developed by nor_:el epeed-o-_eter means at the output. ,haft or it may be derived ...

125

Translocation of /sup 14/C-sucrose from mesophyll to vein and stem bark in mulberry plant

Results are presented of trials in W. Germany involving Populus tremula X P. tremuloides. In a nursery in late August - early September 1971, some 1300 buds from 38 selected 3-yr-old hybrid aspen seedlings were grafted into T-slits at nodes 10-20 cm above root' collars of 1 and a half yr-old hybrid aspen stock (products of controlled crossings, and in some cases of similar parentage to the transplanted buds). In spring 1972, each stock (from which its own buds were removed) was cut back to a 'peg' 15-20 cm above the level of the graft; the 'peg' was later used to support the new shoot developed from the transplanted bud. By Sept. 1972, 33% of grafts were successful, the success rate being significantly different (3-67%) within clones; average height of scion shoots ranged from 79 to 375 cm (no significant difference between clones). In spring 1973, some 190 grafts from 35 clones were row-planted in the open (3 m between ...

1982-01-01

126

The effect of elevated carbon dioxide on a Sierra-Nevadan dominant species: Pinus ponderosa

One-year-old seedlings of mulberry, the variety of Shinichinose, were used to fix /sup 14/CO/sub 2/ for 10 minutes under light of 18,000 lux at 28 deg C. Photosynthesis was continued after that in the air not containing /sup 14/CO/sub 2/. The specimens were collected immediately after and 10 and 30 minutes after the /sup 14/CO/sub 2/ fixation, divided into mesophyll, vein and stem bark, frozen in liquid N/sub 2/, and the contents of sucrose, glucose and fructose and their radioactivity were measured. The ratio of the radioactivity incorporated into sucrose to the total radioactivity incorporated into each tissue was very large, and the incorporation into glucose or fructose was very little. The content of sucrose was also larger than that of the other sugars in all the tissues. These findings showed that the photosynthates were translocated mainly in the form of sucrose. The ratio of specific radioactivity (dpm/mg sugar) in the mesophyll to that in the vein was ...

1982-12-01

127

Primary study on lesion mimic mutants of rice (oryza sativa L.)

The impact of increasing atmospheric C0{sub 2} has not been fully evaluated on western coniferous forest species. Two year old seedlings of Pinusponderosa were grown in environmentally controlled chambers under increased C0{sub 2} conditions for 6 months. These trees exhibit morphological, physiological, and biochemical alterations when compared to our controls. Analysis of whole plant biomass distribution has shown no significant effect to the root to shoot ratios, however needles subjected to elevated C0{sub 2} exhibited an increased overall specific needle mass and a decreased total needle area. Morphological changes at the needle level included decreased mesophyll to vascular tissue 91 ratio and variations in starch storage in chloroplasts. The elevated CO{sub 2} increased internal CO{sub 2} concentrations and assimilation of carbon. Biochemical assays revealed that ribulose-bisphosphate carboxylase specific activities increased on per unit area basis with ...

1995-01-01

128

Physiological responses of Pinus sylvestris to changing carbon dioxide and ozone concentrations

Nineteen lesion mimic mutants (xsl1-19) of japonica rice Xiushui11 were obtained by ?-rays irradiation treatment. All mutants belonged to whole life lesion mimic. Lesion mimic of mutants didn't largen after tillering stage, leaves didn't wither, and no effect on the plants exsert spikes and seed. When the highest temperature in day exceeded 32 degree C in seedling stage, lesion mimic of all mutant expect xsl19 disappeared. Under 32 degree C, lesion mimic would appear gradually, and symptoms weren't inhibited by high temperature after 5 leaf stage. The plant heights of all lesion mimic mutants were 47.56-63.54 cm in the tillering stage, and that of CK was 83.75 cm; but the dwarf phenomenon of mutants only appeared before tillering stage, and didn't affect plant heights finally; the heading dates of mutants were the same to the CK, the ear length of all mutants were 9.43-15.19 cm, and that of CK was 16.41 cm; the total grain quantity per spike of all mutants were ...

2007-08-01

129

Natural vegetation at the proposed Reference Repository Location in southeastern Washington

The objective of this research is to study the effects of elevated ozone, carbon dioxide and their combination on ultrastructural, physiological and biochemical responses of Scots pine needles and how these effects are reflected to photosynthesis, carbohydrate and nutrient allocation and finally to shoot and root growth of trees. In addition the interactions of the studied trees and mycorrhizal fungi as well as insect herbivores are studied. The exposures have been running only for two growing periods and it seems necessary to continue the experiment over the third growing season in 1996. Since the analyses are partially incomplete, only preliminary conclusions are possible at the moment. The slightly increased shoot growth and needle width and increased amount of starch in chloroplasts point to the slight stimulating effect of elevated CO{sub 2} among the chamber treatments. Altogether the growth of the seedlings was best in the chamberless treatment indicating a ...

1996-12-31

130

Induced mutation in narrow-leafed lupin improvement: An example of herbicide tolerance

The dominant shrubs were sagebrush and spiny hopsage; the herbs were dominated by cheatgrass and Sandberg bluegrass. Spiny hopsage appeared to be vulnerable to burning and also to damage by off-road vehicular traffic. It appears to have little or no ability to reproduce through seedlings; once the existing plants are killed they are not likely to be replaced, even if seed-producing plants are nearby. The only pure stand of spiny hopsage known to exist on the Hanford Site is on and near study plot 2H. Sagebrush, like spiny hopsage, is killed by burning and by heavy vehicles. Sagebrush is capable of reproducing via seeds, indicating that it is an inherently aggressive species with a capacity to reestablish itself if parent plants are in the vicinity to act as seed sources. Alien, annual plants, especially cheatgrass, were a major contributor to the herbaceous canopy cover in plots 3S, 4S, and 5S. However, native perennial grasses, especially Sandberg bluegrass, were ...

131

Evaluation of the F_1 sterility technique for population suppression of the pink bollworm, Pectinophora gossypiella (Saunders)

Spontaneous mutation has been discovered and utilized in domestication of narrow-leafed lupin (Lupinus angustifolius L.). As the result of the domestication, lupin has become a dominant grain legume crop in Western Australia. Facing the new challenge of developing herbicide tolerance cultivars, chemical mutagenesis has been used to create new tolerance to herbicide. This paper reports the characterization of two lupin mutants (Tanjil-AZ-33 and Tanjil-AZ-55) that are highly tolerant to metribuzin herbicide. A dose response study over 8 doses revealed that Tanjil-AZ-33 was 6 times more tolerant to metribuzin than the original parental cultivar Tanjil by measure of LD50. This mutant Tanjil-AZ-33 is the most tolerant germplasm in narrow-leafed lupin. Both mutants also maintain the high resistance to the disease anthracnose as cv Tanjil. Seed yield based on small field plots (3.6 m"2) under irrigation was 4.2 t/ha for Tanjil-AZ-33 and 1.9 t/ha for Tanjil when the ...

2008-08-12

132

phenAtmoPrecipitation.owl

Field cage studies were carried out to evaluate the F_1 sterility technique for population suppression of the pink bollworm, Pectinophora gossypiella (Saunders), in cotton. For this purpose, six field cages (1.8 m x 1.8 m x 1.8 m) were placed over cotton seedlings in the field. Five pairs of laboratory reared, untreated adult moths were released in all six cages during the first week of August. In addition, on the same data 100 pairs of adults, following irradiation of the mature pupae at 100 Gy, were released in two cages and 250 such pairs of irradiated adults in two other cages in ratios of 20:1 and 50:1 (irradiated:normal), respectively. The results of per cent larval infestation in the rosette blooms in different field cages indicated that larval infestation in the flowers was significantly lower (4.93%) in cages where the moths were released at the 50:1 ratio than in cages where moths were released at the 20:1 ratio (6.71%). Larval infestation in the flowers ...

1993-09-01

133

Variation Analysis of Geomagnetic Data Observed Around the Event of Andong Earthquake (May 2, 2009)

The bands may be classified as primary if they merge into the eyewall encircling the eye of the storm, or secondary if they are disconnected from the ...

134

Full Text Available

2009-10-01

135

TED | Profile

Spent fuel sabotage aerosol ratio test program : progress & status, May 2004.

... The dawn of Bio-Mecha and a Biomechanical Revolution May 31 2011: Hi Julian, Yes, but i dont think we would ... The dawn of Bio-Mecha and a Biomechanical Revolution May 31 2011: A BBC Documentary: All Watched Over by Machines of Loving ... The dawn of Bio-Mecha and a Biomechanical Revolution May 17 2011: Ed Boyden: A light switch for neurons is an amazing ... The dawn of Bio-Mecha and a Biomechanical Revolution May 16 2011: Thank you Meher Like Spring Rabbit, its a great contribution....

136

Spent fuel sabotage aerosol ratio program : status, May 2005.

No abstract prepared.

2004-05-01

137

Seasonal variability of leaf area index and foliar nitrogen in contrasting dry-mesic tundras

No abstract prepared.

2005-05-01

138

Sinus Surgery

Medline Plus

... know if the drainage becomes very clear, like tap water. This may be the first indication that there ...

139

Regulation of cloned, Ca2+-activated K+ channels by cell volume changes.

Udgivelsesdato: May 2009

2009-01-01

140

Udgivelsesdato: 2002-May

2002-01-01

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141

Power in the system

Parietal endoderm secreted S100A4 promotes early cardiomyogenesis in embryoid bodies

May 1972. United States Warren, FH Federal Power Commission,

1972-05-01

142

Udgivelsesdato: 2006-May-5

2006-01-01

143

Ovarian Cancer

Medline Plus

... opening the abdomen surgically. This surgery may be laparoscopic, using special scopes. It could also be an ...

144

Ectopic Ureter

Degradation of leucine zipper-positive isoform of MYPT1 may contribute to development of nitrate tolerance.

... such as renal flow scan or a formal kidney X-ray, called an intravenous pyelogram ( IVP ), may help ...

145

DNA adducts and cancer risk in prospective studies: a pooled analysis and a meta-analysis

PMID:19939965

2009-11-25

146

Calcineurin may regulate multiple endocytic processes in C. elegans

Udgivelsesdato: 2008-May

2008-01-01

147

Full Text Available

2011-02-01

148

Aphasia

Unusual occurrence of accessory central cusp in the maxillary second primary molar

... is temporarily interrupted but quickly restored, called a transient ischemic attack. In these circumstances, language abilities may return in ...

149

The treatment of diabetic foot infections: focus on ertapenem

Accessory cusp present on the occlusal surface may seldom pose problems. While its presence may not be a cause for alarm in most instances, it can sometimes lead to serious consequences if it is damaged....Full Text Available

2011-04-01

150

Clinically, 3 distinct stages of diabetic foot infection may be recognized: localized infection, spreading infection and severe infection. Each of these presentations may be complicated by osteomyelitis....Full Text Available

2009-01-01

151

Tachyons

Synthesis, Salvage, and Catabolism of Uridine Nucleotides in Boron-Deficient Squash Roots ¹

Arguments in favour of the possibility of the existence and the non-existence of tachyons are put forward. Some of the theoretical and experimental attempts which have either supported the view that tachyons exist or not are mentioned. In the light of evidence, available as of now, it is surmised that they may not exist and if they do, they may be neutral in charge. (K.B.).

152

Problems for clinical judgement: 2. Obtaining a reliable past medical history

Previous work has provided evidence that plants may require boron to maintain adequate levels of pyrimidine nucleotides, suggesting that the state of boron deficiency may actually be one of pyrimidine...Full Text Available

1981-12-01

153

Medical records documentation of constipation preceding Parkinson disease

ORDINARY HUMAN REASONING MAY LEAD PATIENTS to provide an unreliable history of past experiences because of errors in comprehension, recall, evaluation and expression. Comprehension of a question may...Full Text Available

2001-03-20

154

Longitudinal Evaluation of Sexual Function in a Male Cohort: The Olmsted County Study of Urinary Symptoms and Health Status among Men

Objective:Parkinson disease (PD) may affect the autonomic nervous system and may cause constipation; however, few studies have explored constipation preceding the motor onset of...Full Text Available

2009-11-24

155

Impalpable Testis and Laparoscopy: When the Gonad Is Not Visualized

IntroductionThe presence of erectile or ejaculatory dysfunction may indicate physical problems; however, individual perceptions (e.g., sexual satisfaction) may reflect...Full Text Available

2009-09-01

156

Genetic predisposition for femoral neck stress fractures in military conscripts

The diagnostic accuracy of laparoscopy for impalpable testis is well recognized. However, in some cases, laparoscopic findings may be misleading, and a viable gonad may be missed with significant medico-legal...Full Text Available

2004-01-01

157

Cooperative research in coal liquefaction

BackgroundStress fractures are a significant problem among athletes and soldiers and may result in devastating complications or even permanent handicap. Genetic factors may increase...Full Text Available

158

Allergy and Sensitization during Childhood Associated with Prenatal and Lactational Exposure to Marine Pollutants

Significant progress was made in the May 1990--May 1991 contract period in three primary coal liquefaction research areas: catalysis, structure-reactivity studies, and novel liquefaction processes. A brief summary of the accomplishments in the past year in each of these areas is given.

1991-05-28

159

Vibration Transmissibility Characteristics of Occupied ...

BackgroundBreast-feeding may affect the risk of developing allergy during childhood and may also cause exposure to immunotoxicants, such as polychlorinated biphenyls (PCBs), which...Full Text Available

2010-10-01

160

Update of the Navy Contract Writing Guide

... The relatively large, low frequency multi-axis motions observed at the chest may be a contributor to discomfort in locomotive engineers. ...

2006-09-01

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161

The Manning Requirements for the Navy's Forward ...

... These requirements may be expressed in terms of MIL-STD-2073-1, DoD Material Procedures for Development and Application of Packaging ...

2004-06-01

162

Survey of Biodegradation of Electronic Components and ...

... Task Force Commander's Handbook for Domestic ... and Radiological (CBR) Defense Requirements Supporting ... DC: Department of Navy, May 1996 ...

2011-05-13

163

Sunflower power conversion system quarterly report, mar. - may 1963

... This pinhole process may be similar to the formation of an oxide layer in aluminum electrolytic capacitors immersed in a borax solution. ...

1991-08-01

164

Strategic Estimate: India

Sunflower 3 kW mercury Rankine power conversion system

1963-01-01

165

Solving Stochastic Linear Programs on a Hypercube ...

... These landing rights were invaluable during Desert Shield/ Desert Storm and may be necessary in securing access to the Arabian Gulf region. ...

1992-04-16

166

Solar neutrinos, solar flares, solar activity cycle and the proton decay

... commands may be input from a terminal or they ... up the outcomes of the stochastic parameters corre- ... queue of subproblems to be solved, the first ...

1991-08-01

167

Santa Cruz County Timber Resources

It is shown that there may be a correlation between the galactic cosmic rays and the solar neutrino

1985-01-01

168

Radionuclide X-ray fluorescence analysis using semiconductor detectors

Timber Resources as defined in General Plan adopted May 24, 1994. Timberlands which are devoted to and ... ...

169

Radionuclide X-ray fluorescence analysis of metal and amorphous materials

Czech May 1979. p. 32-33. Czechoslovakia Benada, J. Spacek, B. Ustav

1979-05-01

170

Nuclear power plants connected with pumped storage plants by the inland lakes

Slovak May 1981. p. 30. Czechoslovakia Sandrik, R. Kliment, V.

1981-05-01

171

Natural convection cooling for offshore nuclear power plants

Finnish (May 1971). Finland Kilpelaeinen, JE Imatran Voima Osakeyhtio,

1971-01-01

172

NASA Cost Estimating Handbook

(May 1974). United States Klystra, CD Univ. of Florida, Gainesville v.

173

MAY 1988. - NASA Technical Reports Server

May 25, 2007 ... The NASA Cost Estimating Handbook brings the fundamental concepts and techniques of cost estimating to NASA personnel in a way that ...

174

Human Auditory Localization Performance in Azimuth

disciplinary methods were used to independently determine the aerodynamic loads, the thermal response, and strardural performance of the hydrogen cooled ...

175

Goals, Strategies, and Top Accomplishments, May 2010 (Fact Sheet)

... The realization of directional audio technology in the cockpit may reduce visual workload, enhance the presentation of flight and threat information ...

1991-01-01

176

Genomics - from Neanderthals to high-throughput sequencing

Fact sheet describes the goals, strategies, and top accomplishments of the Clean Cities program.

2010-05-01

177

Final Report: Local Heat Transfer and CHF for Subcooled Flow Boiling, September 15, 1992 - May 14, 1998

A report on 'The Biology of Genomes' meeting, Cold Spring Harbor, USA, 10-14 May 2006.

2006-01-01

178

Electromagnetic radiation produced by a relativistic charge passing through a hole in a conducting plate

No abstract prepared.

1998-08-01

179

Crisis communication on nuclear facilities and addressing media

(May 1974). United Kingdom Hemp, J. Oxford Univ. (UK). Dept. of

180

Applied nuclear science research and development. Semiannual progress report, October 1, 1983-May 31, 1984

Japanese May 2009 p. 386-390 Japan Mitani, Shinji Japan Nuclear Energy

2009-05-01

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181

APPLICATION OF CERTAIN SHALE PRODUCTS AS ...

Separate entries are individually indexed.

1985-01-01

182

APOD: 2009 May 25 - Hubble Floats Free

... unlimited. It may be released to the Clearinghouse. DePartment of Comereforsae o te enga Page 2. EDITED TRANSLATION A ...

1968-10-22

183

A Generalized Simulation Model for Reservoir System ...

Space Telescope is currently planned for launch in 2014. Tomorrow's picture: galactic whirlpool ...

2011-10-07

184

-!23(!,, - The Marshall Star - NASA

... Hydropower analysis may include run-of-river, peaking, and pumped storage plants as well as system power operation. ...

1992-03-01

185

Water-level variations and their effects on tree growth and mortality and on the biogeochemical system at the phytoremediation demonstration site in Fort Worth, Texas, 1996-2003

Jun 19, 2008 ... As a result of the May 30 police chase on Redstone Arsenal, ..... Brian Mitchell , the Marshall Center's education and public ...

186

Evolution of improved varieties of sesame through induced mutations

In 1996, a field-scale phytoremediation demonstration project was initiated and managed by the U.S. Air Force at a site in western Fort Worth, Texas, using a plantation of 1-year-old stems harvested from branches of eastern cottonwoods during the dormant season (whips) and a plantation of 1-year-old eastern cottonwood seedlings (calipers). The primary objective of the demonstration project was to determine the effectiveness of eastern cottonwoods at reducing the mass of dissolved trichloroethene transported within an alluvial aquifer. The U.S. Geological Survey conducted a study, in cooperation with the U.S. Air Force, to determine water-level variations and their effects on tree growth and mortality and on the biogeochemical system at the phytoremediation site. As part of the study, water-level and water-quality data were collected throughout the duration of the project. This report presents water-level variations at periodic sampling events; data from August ...

2004-01-01

187

An enhanced primary health care role following psychological trauma: the Christchurch earthquakes.

Sesame varieties/genotypes showed a good response to radiation with gamma rays and treatments with EMS. In M_1 both gamma rays and EMS influenced germination, seedling height, survival of plants and pollen fertility/sterility, producing deleterious effects on these characters. Compared to black seeded genotypes, white seeded ones are more susceptible to radiation. Both gamma rays and EMS produced various types of morphological variations in M_2 generation. These were dwarf plant mutants, mottled and fleshy leaved mutants (sterile), fasciated stem, flower colour, altered phyllotaxy, early, uniculm, capsule size variations, multiple capsule/leaf axil, seed coat colour variations, indehiscent and semi-indehiscent type mutants. Moreover, studies on quantitative characters including seed yield revealed the induction of mutants in both positive and negative directions for such traits which made a good scope of selection of desirable mutants in M_2 generation. Mutants ...

2001-01-01

188

Temporary endovascular control of a bleeding aortoenteric fistula by transcatheter coil embolization.

Following the February 2011 earthquake in Christchurch, New Zealand (NZ), the authors participated in counselling local residents, and debriefing and supervising support teams. Indications were that risk for mental health disorders, including Post-Traumatic Stress Disorder (PTSD), may be elevated in residents, and that this risk may continue for some time. Patients may be de-prioritising their mental health issues when these become normalised throughout the city's population. The authors recommend that primary care patients are assessed using a brief, comprehensive tool (for example, the Case-finding and Help Assessment Tool) that targets many health and behavioural issues identified as increasing in the city following the earthquake. Anxiety and mood disorder symptoms may indicate assessment is appropriate to reduce harm arising from increased risk for PTSD. Concern also is raised for primary health ...

2011-09-01

189

Operating buildings during temporary electricity shortages

A 67-year-old man presented with gastrointestinal bleeding resulting from a fistula between the aortic stump and the fourth part of the duodenum 14 months after an axillobifemoral bypass, graft excision, and aortic stump closure for aortic graft infection. The patient initially refused any attempt at definitive surgical treatment so coil embolization of the aortic stump was performed via a brachial approach. Coil embolization may be a useful adjunct in the management of such difficult problems. This approach may buy time and allow careful planning of a definitive treatment or may serve as a palliative procedure in inoperable patients. PMID:15947052

2005-06-01

190

Vitamin D and Serum Cytokines in a Randomized Clinical Trial

The operation of buildings can be temporarily modified to use much less electricity. These actions may be necessary during regional electricity shortages lasting anywhere from days to months. The electricity conservation measures typically involve a combination of technical modifications, temporary changes in occupant behavior, and greatly increased vigilance. At the same time, attempts to drastically reduce a building's electricity use may have unexpected consequences affecting energy use, the indoor environment, and the performance of building materials and equipment. Electricity shortfalls such as those described in this paper may occur more often as a result of climate change and liberalized electricity markets. (author)

2006-07-01

191

Vasoconstrictors in local anesthesia for dentistry.

Background. The role of vitamin D in the body's ability to fight influenza and URI's may be dependent on regulation of specific cytokines that participate in the host inflammatory...Full Text Available

2010-01-01

192

Addition of a vasoconstrictor to a local anesthetic may have several beneficial effects: a decrease in the peak plasma concentration of the local anesthetic agent, increase in the duration and the quality...Full Text Available

1992-01-01

193

Units Data May29p

UARS Particle Environment Monitor (PEM) Level 3AT - Mirador - NASA

... 2nd Battalion, 20th Special Forces Group, Company B ... Page 23. Headquarters, 29th Infantry Division, Joint Task Force-Augmentation ...

194

UARS PEM Level 2 VMAG AC - Mirador - NASA

May 11, 2011 ... The Particle Environment Monitor (PEM) on NASA's Upper Atmosphere Research Satellite (UARS) measures the type, amount, energy, and ...

195

Tuberculous Granulomas Are Hypoxic in Guinea Pigs, Rabbits, and Nonhuman Primates?

May 11, 2011 ... The Particle Environment Monitor (PEM) on NASA's Upper Atmosphere Research Satellite (UARS) measures the type, amount, energy, and ...

196

The sites and topology of mitochondrial superoxide production

Understanding the physical characteristics of the local microenvironment in which Mycobacterium tuberculosis resides is an important goal that may allow the targeting of metabolic processes...Full Text Available

2008-06-01

197

Test of new shell model wave functions by means of 166 MeV alpha particle inelastic scattering

Mitochondrial superoxide production is an important source of reactive oxygen species in cells, and may cause or contribute to ageing and the diseases of ageing. Seven major sites of superoxide...Full Text Available

2010-08-01

198

Tachyons and theory of quasi-catastrophes

(13 May 1974). Netherlands Bimbot, L. Brissaud, I. Le Bornec, Y. Tatischeff,

199

Successful rehabilitation in conversion paralysis.

The author discusses the formulation and application of the theory of quasi-catastrophes for the behaviour and properties of tachyons. This approach assists in the interpretation of experiments where tachyons may be involved. (W.D.L.).

200

Stress measurements in welds: Problem areas

A rehabilitation programme for patients with conversion paralysis has been introduced in which they are offered physical rehabilitation. During an eight month period between October 1984 and May 1985...Full Text Available

1986-06-28

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201

Spatial and Temporal Variability of Column Integrated Aerosol - NASA

There have been many stress measurements on welds by neutron diffraction over the past 20 years but there are still a number of serious experimental issues that are often not addressed. The primary fact is that the microstructure generally changes across the weld and accompanying this may be a change in the concentration of strengthening elements in solution. This will lead to a shift in lattice spacing which may be incorrectly interpreted as a strain. Secondly, a gradient of plastic deformation near the weld may be expected. Since plastic deformation by application of a stress always generates intergranular (type-2) strains this may lead to a range of intergranular effects superposed on the conventional weld-related strains. The effects are illustrated by neutron diffraction studies of Zr-4, ferritic and austenitic welds where chemistry, intergranular effects and crystallographic texture can all play a ...

2006-11-10

202

Self-Motion and the Shaping of Sensory Signals

the southern Arabian Gulf region left its signature on the heterogeneous aerosol .... Arabian Gulf region, since large differences in ? may be caused by ...

203

SURFACE AND INTERFACE PROPERTIES OF PdCr/SiC SCHOTTKY DIODE GAS ...

Sensory systems must form stable representations of the external environment in the presence of self-induced variations in sensory signals. It is also possible that the variations themselves may provide...Full Text Available

2010-04-01

204

Regulation of Male Fertility by the Opioid System

The formation of palladium silicides near the interface may decrease hydrogen solubility at the effective metal/semiconductor ...

205

Rare Book and Special Collections Reading Room (Library of Congress...

Endogenous opioid peptides are substances involved in cell communication. They are present in various organs and tissues of the male and female reproductive tract, suggesting that they may regulate...Full Text Available

2011-07-01

206

RXTE GOF: News Archive 2004 - HEASARC - NASA

any locality that is now in the United States. The English fleet lies at anchor, the infantry troops having disembarked and are attacking the Spanish settlement on May 28 and 29,...

2011-06-02

207

Public Health, Commissioned Corps

May 18, 2007 ... This exciting new development in neutron star evolution was presented at the Winter 2004 AAS Meeting in Atlanta, Georgia. ...

208

Prenatal immunotoxicant exposure and postnatal autoimmune disease.

may experience difficulty opening the Facebook page due to current HHS policy and network security that blocks access to the site. Site Map - Contact Us - Linking to USPHS.gov -...

2011-10-16

209

Pneumomediastinum as a complication of emphysematous cholecystitis: Case report

Reports in humans and rodents indicate that immune development may be altered following perinatal exposure to immunotoxic compounds, including chemotherapeutics, corticosteroids, polycyclic hydrocarbons,...Full Text Available

1999-10-01

210

Physiological Response in Ovis Aries Resulting from Electrical ...

BackgroundEmphysematous cholecystitis is a variant of acute cholecystitis which is generally caused by gas-forming organisms. Emphysematous cholecystitis may cause gas spreading...Full Text Available

211

Parental infertility and sexual maturation in children

... Secondly, the electrode- tissue interface may have ... stimulation of the optic nerve in a ... Ocular Electronic Vision Prosthesis, Australasian Ophthalmic ...

2001-10-25

212

Parenchyma-sparing pancreatectomies for benign or border-line tumors of the pancreas

BACKGROUNDThe reproductive health of children born of infertile couples may be affected by infertility treatment or factors associated with infertility. We examined sexual maturation...Full Text Available

2009-02-01

213

Open-source software accelerates bioinformatics

Standard pancreatic resections, such as pancreaticoduodenectomy, distal pancreatectomy, or total pancreatectomy, result in an important loss of normal pancreatic parenchyma and may cause impairment...Full Text Available

2010-06-15

214

On the ideal gas of tachyons

A report on the Wellcome Trust/Cold Spring Harbor Genome Informatics meeting, Cold Spring Harbor, USA, 7-11 May 2003.

2003-01-01

215

On Optically Thick Condensations in Planetary Nebulae NASA, Goddard

The properties of the ideal gas of classical (nonquantum) tachyons are considered. Starting from the definition of thermodynamic functions for this system, it may be found that tachyons and bradyons gases are similar. (AA).

216

Nociceptive and Anxiety-Like Behavior in Reproductively Competent and Reproductively Senescent Middle-Aged Rats

effect of central star evolution would be to produce a thinner boundary, but the results of ... indicate that central star evolution may be neglected when ...

217

National Response Center Intro Page

BackgroundChanges in levels of estradiol and progesterone that occur with the transition to reproductive senescence may influence nociception or affect.Full Text Available

2009-01-01

218

National Interagency Fire Center

operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.- At any time, the USG may inspect and seize data stored on...

2011-02-28

219

NASA - NASA Explorer Joins Godspeed Commemoration in Alexandria

and the Wildland Firefighter Foundation. To request a marker click here. Engraved bricks may also be purchased from the Foundation to become part of the site. To request a...

2011-07-22

220

NASA - A Cosmic Inkblot Test

May 25, 2006 ... Former NASA Astronaut Roger Crouch will help open the commemoration of the 400th anniversary of Jamestown in Alexandria, Va., ...

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221

Molecular Aspects of Thyroid Hormone Actions

material may survive intact and mix back into interstellar gas clouds, helping to fuel the next generation of stars. NASA's Jet Propulsion Laboratory, Pasadena, Calif.,...

2011-08-10

222

Meeting the resistance problem

Cellular actions of thyroid hormone may be initiated within the cell nucleus, at the plasma membrane, in cytoplasm, and at the mitochondrion. Thyroid hormone nuclear receptors (TRs) mediate the biological...Full Text Available

2010-04-01

223

Because resistance to new insecticides may develop rapidly and cross resistance is often encountered, even between insecticides of different classes, there is a continual demand for the development...Full Text Available

1963-01-01

224

Main MenuPg

Land Information System LIS Reference Manual

Previous experimental data and theoretical analysis have demonstrated that ... products of a technological process) but also other contaminants. ..... Thorough outgassing of solar array surfaces may result in significant decrease of arc ...

225

LPR 3451.1 Effective Date - Langley Management System - NASA

May 4, 2010 ... This routine interpolates atmospheric adtt seconds period forcing ... for one adtt interval. Interpolation is performed based on the value ...

226

Intravesical Prostatic Protrusion in Men in Olmsted County, Minnesota

Apr 18, 2011 ... TOA period, sick leave may be granted for the period of ..... civil service retirement under the CSRS and FERS retirement programs. ...

227

Infrared Thermometer - NASA Spinoff

PurposeUltrasonically measured intravesical prostatic protrusion may be a promising noninvasive method of assessing bladder outlet obstruction. Previous investigations...Full Text Available

2009-12-01

228

If I Had - Acne As a Young Female

May 1, 2011 ... Abstract: Diatek Corporation, San Diego, CA and the Jet Propulsion Lab developed the Diatek Model 7000 aural thermometer which weighs ...

229

Medline Plus

... VIDEO: FASDs Cause More Severe Behavioral Problems Than ADHD, Baking Soda May Slow Chronic Kidney Disease, Higher ...

230

How safe are the biologicals in treating asthma and rhinitis?

Guidance on quality assurance requirements during the construction phase of nuclear power plants

A number of biological agents are available or being investigated for the treatment of asthma and rhinitis. The safety profiles of these biologic agents, which may modify allergic and immunological...Full Text Available

231

Google Crisis Response: Gulf of Mexico Oil Spill - GCMD - NASA

10 May 1974. 234 p. United States USAEC, Washington, DC WASH--1309.

232

General Disclaimer One or more of the Following Statements may ...

May 13, 2010 ... Abstract: On April 20, 2010, an explosion occurred on the semi-submersible offshore drilling rig Deepwater Horizon in the Gulf of Mexico, ...

233

General Disclaimer One or more of the Following Statements may ...

insbesondere fuer Dampfturbinen (Tests on Surface Condensors,. Particularly for Steam Turbines)," ZS. d. V.D.I., 1909, p. ...

234

General Disclaimer One or more of the Following Statements may ...

LASERASSISTED SOLAR CELL METALLIZATION PROCESSING DOE/JPL/956615--84/3. S. Dutta and P. G. McMullin. Quarterly Report for the period March 13 ...

235

General Disclaimer One or more of the Following Statements may ...

Oberpfaffenhofen, Pedel"al aepublic of Gel1lany. A large number of European scientists have provided ex~eri- ments that will be cooducted in the Material ...

236

General Disclaimer One or more of the Following Statements may ...

1 The Elemental Fuel Cell Model. The cell reactions are also illustrated in. Figure 1. Hydrogen is oxidized at the anode. Oxy- ...

237

General Disclaimer One or more of the Following Statements may ...

major radius of the toroidal containment volume. The containment time was calculated using equation (4) as derived in references 16 and 17. The solid ...

238

General Disclaimer One or more of the Following Statements may ...

Waermedurchgang, Blutzucker, Muskel- and Leberglykogen sowie auf die chemische Thermogenese juveniler Albino- ratten" .. Acta biol. med. germ., Vol. ...

239

General Disclaimer One or more of the Following Statements may ...

Aug 3, 2011 ... System (NASS) and the NERVA Effluent Purification System ... Effluent Purification System (NEPS). 7.4.2.2. Requirements ...

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General Disclaimer One or more of the Following Statements may ...

Hie synthesis of diverse biologically important compounds, under condi- tions which existed on the earth in the initial period of its evolution, ha; ...

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241

General Disclaimer One or more of the Following Statements may ...

complexe sur paroi non-isotherme, LContri5ution to the Study thermal ... paroi chaude essentiellement non-isotherme, LVaporization in a Complex ...

242

General Disclaimer One or more of the Following Statements may ...

Wit?,-grain ultimate compressive strength of multiply extruded graphite rods made with G-18 flour,. V. 5. " TOTAL n ACCESSIBLE TO Hp AT 2600 psi ...

243

GENERALIZATION OF POSTURE TRAINING TO COMPUTER WORKSTATIONS IN AN APPLIED SETTING

MAGNETIC FORMING BERYLLIUM COIL ASSEMBLY. By. J. W. Rogers, D. D. Wier, and M. E. Davis. Department of Electrical Engineering. Mississippi State University ...

244

Free electron laser: general concepts and present state of practical importance

Improving employees' posture may decrease the risk of musculoskeletal disorders. The current paper is a systematic replication and extension of Sigurdsson...Full Text Available

2011-01-01

245

Far-Infrared Spontaneous Intraband Emission from Laser ...

Since the advent of the first free electron laser (FEL) in 1976 up to now, a series of principles, configurations and operation modes of these FELs have been devised and partially implemented. The principles refer to transverse FEL, longitudinal FEL, combined FEL, and transverse optical klystron FEL. Configurations may be standard or many-stage and the undulators may be magnetostatic, electrostatic or electromagnetic. The operation regimes may be low-gain Compton type, high-gain Compton type, Raman type, with and without space charge. The operation modes may be the amplification of an external coherent EM radiation, a self-amplified spontaneous emission (SASE), or an oscillator. The paper presents in detail these concepts and the limit between classical approach and the quantum approach of FEL. (Author).

1994-09-21

246

Eukaryotic Diversity in an Anaerobic Aquifer Polluted with Landfill Leachate?

... The fact, that such a spontaneous radiation have been observed, may be considered as the first step of development of the FIR laser based on ...

1998-06-01

247

Embryonic Retinal Cells and Support to Mature Retinal Neurons

Eukaryotes may influence pollutant degradation processes in groundwater ecosystems by activities such as predation on bacteria and recycling of nutrients. Culture-independent community profiling and...Full Text Available

2008-07-01

248

ECONOMICS OF HEALTH ADMINISTRATION

Purpose.There is a paucity of neuron replacement studies for retinal ganglion cells. Given the complex phenotype of these neurons, replacement of ganglion cells may be impossible....Full Text Available

2010-04-01

249

Documentation of Contact Precautions in an Electronic Health Record

Health administration lies at the foundation of economic prosperity. It is a business and like other business is subject to commercial laws. Quality, whether of brain or brawn may be appraised by the...Full Text Available

1920-02-01

250

Contact precautions are implemented to reduce transmission of multidrug-resistant organisms but may also increase hospital costs and patient complications. The goal of this study was to determine...Full Text Available

2011-07-01

251

Digoxin therapy

Dietary Phosphorus Acutely Impairs Endothelial Function

1 Recommendations for correct therapy with digoxin from twenty-five sources are reviewed. 2 Some recommendations may be unsuitable for use with high bioavailability...Full Text Available

1976-08-01

252

Deforestation Plays Critical Climate Change Role - NASA Earth ...

Excessive dietary phosphorus may increase cardiovascular risk in healthy individuals as well as in patients with chronic kidney disease, but the mechanisms underlying this risk are not completely understood....Full Text Available

2009-07-01

253

Database Creation for Information Processing Methods ...

May 11, 2007 ... "Deforestation in the tropics accounts for nearly 20 per cent of carbon emissions due to human activities," Dr. Canadell says. ...

254

Cowper's syringocele: an analysis of 15 consecutive cases.

Page 1. Database Creation for Information Processing Methods, ... ARL-TN-0348 May 2009 Database Creation for Information Processing Methods, ...

2009-05-01

255

Cost Estimating - NASA Technical Report Service

Cystic dilatation of Cowper's gland ducts (Cowper's syringocele) is uncommon in children and is frequently asymptomatic, but it may cause urinary infection, haematuria, dysuria, and obstructive voiding...Full Text Available

1996-07-01

256

Correlation between particle size, in vivo particle persistence, and lung injury.

May 25, 2007 ... This form will generate a bibliography of cost estimating references. The form will search the NASA Technical Report Service (NTRS) database ...

257

Comparing Genomes within the Species Mycobacterium tuberculosis

Dosimetry parameters such as deposition, clearance, retention, and translocation and dissolution of inhaled particles in and to different lung compartments may be important for the persistence of particles...Full Text Available

1994-10-01

258

The study of genetic variability within natural populations of pathogens may provide insight into their evolution and pathogenesis. We used a Mycobacterium tuberculosis high-density...Full Text Available

2001-04-01

259

Clinical spectrum

Charge of the van brigade. [Electric-powered vehicles

A tunable diode laser is used to obtain infrared spectra of carbon dioxide in biological materials. The spectral resolution is sufficient to readily distinguish differing isotopic species. The technique may prove useful in clinical tests.

1987-11-01

260

CONSTRAINTS TO CRASSOSTREA ARIAKENSIS AQUACULTURE: SEASON AND METHOD OF CULTURE STRONGLY INFLUENCE SUCCESS OF GROW-OUT

Electric cars are as unpopular as ever, but the hopes for environmentally sound, quiet vehicles may lie, surprisingly, with the commercial market. Advances in electric vans and lorries are reviewed. (author).

1990-07-05

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261

Bioterrorism and Biocrimes: The Illicit Use of Biological Agents ...

... of culture season and method on benefits of oyster aquaculture may be obtained without appreciable risk of unplanned ... ...

262

... view on the utility of such attacks, see JH Rothschild, Tomorrow's Weapons ... Aum Shinrikyo may have had a stolen vaccine anthrax strain incapable ...

2001-02-01

263

Biological pest control

Artificial and natural duplicates in pyrosequencing reads of metagenomic data

For the purposes of energy forests, biological pest control should be interpreted as any method of using natural organisms or their products for the regulation of herbivores, below the economic threshold. The organisms include the energy forest crop species and natural enemies of pest herbivores. Examples are provided of three-trophic-level interactions, including some on willows and poplars. Bottom-up effects may be particularly strong in juvenile Salicaceae, which are used in energy forest production, because plants are growing vigorously, and many herbivores respond positively. Some major pests on willows and poplars appear to have weak top-down regulation, and they may be influenced most by bottom-up effects such as plant resistance through genetic variation, ontogenetic aging and physiological aging. Balancing the bottom-up and top-down forces in energy forests may be difficult in short-rotation crops, but harvesting ...

1994-01-01

264

Application of radionuclide X-ray fluorescence analysis as a multi-element field method in geochemical prospection

BackgroundArtificial duplicates from pyrosequencing reads may lead to incorrect interpretation of the abundance of species and genes in metagenomic studies. Duplicated reads were...Full Text Available

265

German May 1981. p. 17-18. Germany Kramar, U. Puchelt, H. Karlsruhe

1981-05-01

266

Antimony Toxicity

Aeroelastic Analysis by Coupled Non-linear Time Domain ... - NASA

Antimony toxicity occurs either due to occupational exposure or during therapy. Occupational exposure may cause respiratory irritation, pneumoconiosis, antimony spots on the skin and gastrointestinal...Full Text Available

2010-12-01

267

APOD: 2009 May 26 - Whirlpool Galaxy Deep Field

and shock induced flow separation may significantly affect the flutter ...... Aerodynamic and Aeroelastic Simulation, AGARD Report 822, 10-1 10-20. ...

268

AGARD Flight Test Techniques Series. Volume 1. Calibration ...

Clicking on the picture will download the highest resolution version available. Whirlpool Galaxy Deep Field Credit & Copyright: Jon Christensen Explanation: Follow the handle...

2011-10-07

269

A Theoretical Solid Oxide Fuel Cell Model for - The NASA Glenn ...

... of "position error" in the AGARD Multilingual Aeronautical ... when it cones into the aircraft flow field it ... on actual bank angle and separation, may be - ...

1983-09-01

270

A Study of Avionics Time Division Multiplex Bus Simulation.

May 31, 2011 ... A Theoretical Solid Oxide Fuel Cell Model for System Controls and Stability Design AUTHOR(S): Kopasakis, George; Brinson, Thomas; Credle, ...

271

10. DIRECT ENERGY CONVERSION ELECTROC HEM ISTRY

... which may have embedded remote terminals, and (4 ... model the time-variant or stochastic aspects of ... on such system parameters as queue size, time ...

1980-12-01

272

placed on direct energy conversion. This is an advanced technology which is ..... Of the direct energy conversion methods discussed, the only one which may ...

273

http-equiv=\\

Waveguide device and method for making same

may be possible to meet those loads with renewable energy systems &mdashachieving zero-net- energy performance.Solar-thermal heating systems, ...p/p Spencer and others argue that renewable energy systems should be considered only after the building envelope ...energy loads are brought low enough, however, a renewable energy system may make sense financially. p

274

Three-Dimensional Dispaly Of Document Set

A monolithic micromachined waveguide device or devices with low-loss, high-power handling, and near-optical frequency ranges is set forth. The waveguide and integrated devices are capable of transmitting near-optical frequencies due to optical-quality sidewall roughness. The device or devices are fabricated in parallel, may be mass produced using a LIGA manufacturing process, and may include a passive component such as a diplexer and/or an active capping layer capable of particularized signal processing of the waveforms propagated by the waveguide.

2007-08-14

275

The waste problem - an inevitable consequence of energy consumption. Abfallproblematik - eine unabwendbare Folge des Energieeinsatzes

A method for spatializing text content for enhanced visual browsing and analysis. The invention is applied to large text document corpora such as digital libraries, regulations and procedures, archived reports, and the like. The text content from these sources may be transformed to a spatial representation that preserves informational characteristics from the documents. The three-dimensional representation may then be visually browsed and analyzed in ways that avoid language processing and that reduce the analysts' effort.

2003-06-24

276

Possible stellar evolutionary link to black holes

'Within 15 years the energy consumption bottleneck has shifted from the supply side to emissions, i.e. to the waste side.' Reflecting this statement one may realize the importance of lending more weight to energy conservation but may also be induced to critically analyze the corresponding measures. First results of such reflections are given with regard to the payback periods of air pollution abatement measures relative to the additional emissions they cause. (orig.).

1991-12-18

277

New physics effects on Higgs production at #gamma##gamma# colliders

The suggestion has been made that stars with collapsing iron cores may be unable to explode, and hence may generate black holes. The situation when the collapsing core is rotating and magnetized is investigated and it is tentatively concluded that these effects make the situation even more conducive to the formation of black holes. (auth)

1973-10-01

278

Lithium isotope ratio in Population II halo dwarfs - a proposed test of the late decaying massive particle nucleosynthesis scenario

We study heavy physics effects on the Higgs production in #gamma##gamma# fusion using the effective Lagrangian approach. We find that the effects coming from new physics may enhance the standard model predictions for the number of events expected in the final states b-barb, WW, and ZZ up to one order of magnitude, whereas the corresponding number of events for the final state t-bart may be enhanced up to two orders of magnitude.

1996-02-20

279

Dynamical evolution and molecular abundances of interstellar clouds

It is shown that observations of the lithium isotope ratio in high surface temperature Population II stars may be critical to cosmological nucleosynthesis models. In particular, decaying particle scenarios as derived in some supersymmetric models may stand or fall with such observations. 18 references.

1988-06-01

280

Congenital Intrahepatic Portosystemic Shunts

Dynamical models are presented that start with interstellar gas in an initial diffuse state and consider their gravitational collapse and the formation of dense cores. Frozen-in tangled magnetic fields are included to mimic forces that might oppose gravitational contraction and whose effectiveness may increase with increasing core densities. Results suggest the possibility that dense cloud cores may be dynamically evolving ephemeral objects, such that their lifespan at a given core density decreases as that density increases. 66 refs.

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281

Biomass of tomorrow: Banknotes. Two new disposal methods as an alternative to combustion. Die Biomasse von morgen: Banknoten. Zwei neue Verwertungsverfahren als Alternative zur Verbrennung

Intrahepatic portosystemic shunts are an anomalous connection between the portal vein and hepatic vein/IVC, which may be either congenital or acquired secondary to liver cirrhosis or portal hypertension. Cases of congenital intrahepatic shunts are usually encountered in children and may spontaneously resolve. We report 5 cases of congenital intrahepatic portosystemic shunts in neonates and an adult

2008-12-15

282

A solution for solid state detector and preamplifier protection, during HV application and removal transition periods

Old banknotes may be tomorrow's biomass. Experts on biowaste are investigating two new processes for disposal of the 1000 tonnes of old bills sorted out every year which may be an alternative to combustion. The author presents details.

1999-06-01

283

A magneto-electric quantum wheel

Surface barrier detectors may be damaged, because of microplasma breakdown, in rapid application of bias voltage. The high performance FETs of very low noise preamplifiers may also be damaged by rapid changes of the bias voltage. The electronic device described permits the gradual application and removal of the bias voltage, without any influence on the power supply specification. (Auth.).

284

Physical model experiment for wave field measurements by means of laser Doppler vibrometer. Measurement of three components; Laser Doppler shindokei ni yoru butsuri model jikken. Hado sanseibun no kenshutsu

Here we show that self-propulsion in quantum vacuum may be achieved by rotating or aggregating magneto-electric nano-particles. The back-action follows from changes in momentum of electro-magnetic zero-point fluctuations, generated in magneto-electric materials. This effect may provide new tools for investigation of the quantum nature of our world. It might also serve in the future as a "quantum wheel" to correct satellite orientation in space.

2009-01-01

285

Method for forming a bladder for fluid storage vessels

In this experiment, a beam incident from an oblique direction is reflected by a spherical lens toward the direction of incidence. When the surface of a matter is vibrated by elastic waves, the spherical lens comes into a translation motion that accompanies the vibration. It follows accordingly that the vibration on the surface of the matter may be detected by sensing the spherical lens travelling speed. Three components of the vibration may be determined if beams are focused at one spot from three directions. Detection of the S-wave component by LDV (laser Doppler vibrometer) discloses the complicated wave field in a heterogeneous material, and this physical model experiment may be utilized in various fields of study. For instance, information about problems that may surface in the field work may be collected beforehand in a physical model experiment for developing an S-wave-aided ...

1997-05-27

286

Lightweight bladder lined pressure vessels

A lightweight, low permeability liner for graphite epoxy composite compressed gas storage vessels. The liner is composed of polymers that may or may not be coated with a thin layer of a low permeability material, such as silver, gold, or aluminum, deposited on a thin polymeric layer or substrate which is formed into a closed bladder using torispherical or near torispherical end caps, with or without bosses therein, about which a high strength to weight material, such as graphite epoxy composite shell, is formed to withstand the storage pressure forces. The polymeric substrate may be laminated on one or both sides with additional layers of polymeric film. The liner may be formed to a desired configuration using a dissolvable mandrel or by inflation techniques and the edges of the film seamed by heat sealing. The liner may be utilized in most any type of gas storage system, and is ...

2000-01-01

287

Burial dissolution and dolomitization relationships to moldic, stylolite and fracture porosity in the Cretaceous Sunniland Formation rudistid carbonate reservoir facies, Florida

A lightweight, low permeability liner for graphite epoxy composite compressed gas storage vessels. The liner is composed of polymers that may or may not be coated with a thin layer of a low permeability material, such as silver, gold, or aluminum, deposited on a thin polymeric layer or substrate which is formed into a closed bladder using torispherical or near torispherical end caps, with or without bosses therein, about which a high strength to weight material, such as graphite epoxy composite shell, is formed to withstand the storage pressure forces. The polymeric substrate may be laminated on one or both sides with additional layers of polymeric film. The liner may be formed to a desired configuration using a dissolvable mandrel or by inflation techniques and the edges of the film seamed by heat sealing. The liner may be utilized in most any type of gas storage system, and is ...

1998-01-01

288

Wholesale pricing for capacity, energy, and ancillary services in a retail wheeling environment: The challenge of maintaining system reliability through efficient market-based distribution of accountability

Cretaceous Sunniland Formation rudistid reservoir facies buried at 3,520 meters (92 C) between evaporite units contain marginally mature algal sapropelic carbonate source rock hydrocarbons. The closed system aids in identification of porosity redistribution related to hydrocarbon emplacement. Multiple dissolution and cementation events associated with hydrocarbon migration pulses are particularly evident along stylolites. Corrosion usually predates typically interparticle first generation saddle dolomite, and corroded saddle dolomite may be observed with two generations of optically continuous limpid overgrowths separated by a corrosive boundary. Dissolution or dedolomitization may provide a magnesium source for subsequent dolomite cements. Carbonic and organic acids are probable primary corrosive agents. Moldic, stylolite and fracture porosity, often reduced by dolomite cements, was generated. Moldic pores may develop from ...

1994-03-01

289

Wear particles, periprosthetic osteolysis and the immune system

As the Electric Power Industry is actively preparing for a restructured future where retail wheeling is practiced ideally and efficiently in a competitive market-based environment, concerns may arise legitimately on how system reliability and integrity can be ensured in an environment where markets have an enhanced role. As these concerns may be justified, at least for a transition period, this paper presents a proposal which outlines how the generally accepted requisite capacity, energy, and ancillary services standards may be satisfied through market reliance and minimal coordination by a Reliability Monitoring and Ancillary Services Managing Entity or Independent System Operator. A Strawman detailing one -- and by no means the only -- future scenario inspired by the recent NEPOOL restructuring discussions in New England is presented to demonstrate that market-based competition and flexibility are compatible with a ...

1996-03-01

290

British Library Electronic Table of Contents (United Kingdom)

The immune system modulates many key biological processes in humans. However, the exact role of the immune system in particle-associated periprosthetic osteolysis is controversial. Human tissue retrieval studies, in vivo and in vitro experiments suggest that the immune response to polymer particles is non-specific and macrophage-mediated. Lymphocytes may modulate this response. However direct lymphocyte activation by polymer particle-protein complexes seems unlikely. However, metallic byproducts may complex with serum proteins and lead to a Type IV, lymphocyte-mediated immune reaction. In predisposed individuals, this reaction may rarely lead to persistent painful joint effusions, necessitating debridement and excision of the bearing surfaces of the prosthesis. In these patients, retrieved...

2007-01-01

291

Using robots for industrial processes on coal mine surfaces

Transient enhanced diffusion and gettering of dopants in ion implanted silicon

How to decide which mine surface tasks may be performed by industrial robots to improve productivity and working conditions is described. Charts are presented of the industrial tasks performed on the surface and how each task may be classified as light, average, difficult or very diffcult according to a defect criteria is explained (defective operations are those which involve, heavy, harmful, stressful or dangerous jobs). The results of these calculations are used to identify which operations are suitable for first introduction of robots since traditional automation methods cannot be used, e.g. various storage, loading and packaging tasks, coal selection, sorting and removal of foreign matter, provision of services such as food preparation, cleaning, etc. Robots may also be used to control automated operations that are monotonous and hazardous for human operators. It is envisaged that in the future computer programmed ...

1987-01-01

292

Transient enhanced diffusion and gettering of dopants in ion implanted silicon

We have studied in detail the transient enhanced diffusion observed during furnace or rapid-thermal-annealing of ion-implanted Si. We show that the effect originates in the trapping of Si atoms by dopant atoms during implantation, which are retained during solid-phase-epitaxial (SPE) growth but released by subsequent annealing to cause a transient dopant precipitation or profile broadening. The interstitials condense to form a band of dislocation loops located at the peak of the dopant profile, which may be distinct from the band formed at the original amorphous/crystalline interface. The band can develop into a network and effectively getter the dopant. We discuss the conditions under which the various effects may or may not be observed, and discuss conflicting observations on As"+ implanted Si.

1984-11-26

293

Transient enhanced diffusion and gettering of dopants in ion implanted silicon

The authors have studied in detail the transient enhanced diffusion observed during furnace or rapid-thermal-annealing of ion-implanted Si. The authors show that the effect originates in the trapping of Si atoms by dopant atoms during implantation, which are retained during solid-phase epitaxial (SPE) growth but released by subsequent annealing to cause a transient dopant precipitation or profile broadening. The interstitials condense to form a band of dislocation loops located at the peak of the dopant profile, which may be distinct from the band formed at the original amorphous/crystalline interface. The band can develop into a network and effectively getter the dopant. They discuss the conditions under which the various effects may or may not be observed, and discuss preliminary observations on As/sup +/ implanted Si. 12 references, 12 figures.

1986-01-01

294

Transient enhanced diffusion and gettering of dopants in ion implanted silicon

We have studied in detail the transient enhanced diffusion observed during furnace or rapid-thermal-annealing of ion-implanted Si. We show that the effect originates in the trapping of Si atoms by dopant atoms during implantation, which are retained during solid-phase-epitaxial (SPE) growth but released by subsequent annealing to cause a transient dopant precipitation or profile broadening. The interstitials condense to form a band of dislocation loops located at the peak of the dopant profile, which may be distinct from the band formed at the original amorphous/crystalline interface. The band can develop into a network and effectively getter the dopant. We discuss the conditions under which the various effects may or may not be observed, and discuss conflicting observations on As/sup +/ implanted Si.

1984-01-01

295

Thermal- and radiation-induced interactions of water on U02 surfaces.

The authors have studied in detail the transient enhanced diffusion observed during furnace or rapid-thermal-annealing of ion-implanted Si. The authors show that the effect originates in the trapping of Si atoms by dopant atoms during implantation, which are retained during solid-phase epitaxial (SPE) growth but released by subsequent annealing to cause a transient dopant precipitation or profile broadening. The interstitials condense to form a band of dislocation loops located at the peak of the dopant profile, which may be distinct from the band formed at the original amorphous/crystalline interface. The band can develop into a network and effectively getter the dopant. They discuss the conditions under which the various effects may or may not be observed, and discuss preliminary observations on As"+ implanted Si. 12 references, 12 figures.

296

Statoil's Material Expectations for Pipelines

Most plans for the disposition of surplus nuclear materials involve storage in sealed containers where the evolution of gases from reactions of adsorbed water could present both pressure and flammability hazards[l] . Despite efforts such as calcining the material to minimize the water content prior to packaging, both residual moisture and readsorbed water may be present in the final containers . Given the anticipated temperature excursions during transportation and storage, this water may thermally desorb, increasing the pressure, and/or thermally dissociate to produce H2 gas, increasing flammability hazards . In addition, the radiation from the nuclear material may induce radiolysis of the water with the likely products being water vapor, H2, 02 and H2O2. In order to better understand the relative importance of the thermal- and radiationinduced chemistry, we have studied the interactions of water on single crystals of ...

2003-01-01

297

Solar-Geophysical Data Number 568, December 1991. Part 1 (prompt reports). Data for November, October 1991 and late data

Pipelines are normally made in low-alloyed steels and the design is based on technical and economical criteria. For the transportation of corrosive fluids, a corrosion evaluation will determine what materials can be used. In the event that stainless steel must be used, investment costs will increase significantly. Use of life cycle cost evaluation may also apply, but we may question how often that is used properly. One must, furthermore, differ between onshore and offshore pipelines, because of differences in pipe laying conditions and in maintenance and repair costs. The consequences of a rupture may differ dramatically between onshore pipelines, too, i.e. a large gas pipeline in a populated area and a small oil pipeline in a nonpopulated area. (author)

2003-07-01

298

Sequential development of correlated projects: an application to coal liquefaction

The contents include: Detailed index for 1991; Data for November 1991--Solar-terrestrial environment, IUWDS alert periods (advance and worldwide), Solar activity indices, Solar flares, Solar radio emission, Stanford mean solar magnetic field; Data for October 1991--Solar active regions, Sudden ionospheric disturbances, Solar radio spectral observations, Cosmic ray measurements by neutron monitor, Geomagnetic indices; Late data--Cosmic ray measurements by neutron monitor (Climax February and May 1990, Deep River May-August 1991), Geomagnetic indices (Sudden commencements/Solar flare effects January-May 1991); Errata--August 1991 Geomagnetic activity indices.

1991-12-01

299

Report on NCI symposium: comparison of mechanisms of carcinogenesis by radiation and chemical agents. II. Cellular and animal models

A sequential research and development programme is considered for which several categories of related technologies are available to develop, each having the potential to produce some final product. At each stage of the programme, an optimal portfolio of technologies is chosen given the information acquired from the previous stages, and those contingent optimal plans are followed in all subsequent stages. The model is applied to coal liquefaction technologies to emphasize the costs that may be incurred by erroneously approaching the development programme as a once-and-for-all endeavour rather than in a sequential framework. The results of the synthetic oil application indicate that the acceleration of the programme may be optimal when the probability of successful development decreases. Under these conditions, adoption of a 'crash programme' in which all projects are researched simultaneously, may lead to ...

1983-01-01

300

Quantum coherence in ion channels: resonances, transport and verification

The point at which the common final pathway for induction of cancer by chemical carcinogens and ionizing radiation has not been identified. Although common molecular targets are suggested by recent findings about the role of oncogenes, the mechanism by which the deposition of radiation energy and the formation of adducts or other DNA lesions induced by chemicals affects the changes in the relevant targets may be quite different. The damage to DNA that plays no part in the transformation events, but that influences the stability of the genome, and therefore, the probability of subsequent changes that influence tumorigenesis may be more readily induced by some agents than others. Similarly, the degree of cytotoxic effects that disrupt tissue integrity and increase the probability of expression of initiated cells may be dependent on the type of carcinogen. Also, evidence was presented that repair of the initial lesions could ...

1984-05-20

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301

Quantitative non-destructive evaluation of high-temperature superconducting materials

Recently it was demonstrated that long-lived quantum coherence exists during excitation energy transport in photosynthesis. It is a valid question up to which length, time and mass scales quantum coherence may extend, how one may detect this coherence and what, if any, role it plays in the dynamics of the system. Here we suggest that the selectivity filter of ion channels may exhibit quantum coherence, which might be relevant for the process of ion selectivity and conduction. We show that quantum resonances could provide an alternative approach to ultrafast two-dimensional (2D) spectroscopy to probe these quantum coherences. We demonstrate that the emergence of resonances in the conduction of ion channels that are modulated periodically by time-dependent external electric fields can serve as signatures of quantum coherence in such a system. Assessments of experimental feasibility and specific paths towards the experimental ...

2010-08-15

302

Quantification of the thrombogenicity of Dacron aortic prostheses

Even though the currently intensive research efforts on high- temperature superconducting materials have not yet converged on a well specified practical material, the indications are that such a material may be quite brittle, anisotropic, and may contain many flaws such as microcracks and voids at grain boundaries. Consequently, practical applications of high temperature superconducting materials will require a very careful strength analysis based on fracture mechanics considerations. Because of the high sensitivity of the strength of such materials to the presence of defects, methods of quantitative non-destructive evaluation may be expected to play an important role in strength determinations. This proposal is concerned with the use of ultrasonic methods to detect and characterize isolated cracks, clusters of microcracks and microcracks distributed throughout the material. Particular attention has been, and will continue ...

1991-06-14

303

Quantification and reduction of the uncertainty in mass balance models by Monte Carlo analysis of prior data

Eight patients with double-velour Dacron aorto-femoral grafts implanted for 2-60 months were studied. Indium-111-labelled platelets were found to have a shortened mean platelet lifespan (MPLS) of 138 +- 32 hours compared with the normal platelet lifespan of 224 +- 23 hours. Labelled platelets accumulated on all grafts, irrespective of graft age, to a maximum of 1,80 +- 0,83% of whole body radioactivity; thereafter graft radio-activity decreased. This suggests that platelets on the graft are in dynamic equilibrium with those in the circulation. Platelets may be lost from the graft by embolization or radioactivity may be released because of platelet lysis. Although MPLS may depend on the age and surface area of the graft, concomitant arterial disease probably also contributes to the shortened MPLS.

304

Physical modeling of desiccation cracking in plastic soils

The general objective of this workshop is to investigate and discuss methods by which uncertainties in mass balance models for toxics in the Great Lakes may be reduced. As described by the workshop prospectus, this paper is focused on problems of reducing (and quantifying) uncertainty as they relate to in situ field observations/system response measurements for the establishment of initial conditions, boundary conditions, calibration/confirmation data sets, and model post-audit data sets.'' I have taken this description to refer not only to the evaluation of uncertainty in the field observations themselves, but also to the uncertainty associated the analyses of in situ observations as they interact in the overall modeling process. Thus, I will be concerned here with quantification and reduction of uncertainty both (1) as they may be applied to descriptions of the system that is being modeled and (2) as they ...

1991-01-01

305

British Library Electronic Table of Contents (United Kingdom)

Desiccation cracking is a common phenomenon in clay materials, which may considerably increase the hydraulic conductivity of soil. This issue is one of the main concerns in the design and construction of landfill covers, especially, in arid regions. For some highly plastic soils, permeability increases during cyclic drying and wetting are not significant, even though cracking may clearly be noticed in the soil. These cracks may self-heal during subsequent wetting and saturation processes. In the present study, large scale experimental models of various natural clayey soils with various plasticity indices were subjected to cyclic drying and wetting and hydraulic conductivity testing to better understand cracking behaviour and self-healing in fine-grained soils. The soils are candidate clay ...

2008-01-01

306

Optimal randomized control policy of an unreliable server system with second optional service and startup

British Library Electronic Table of Contents (United Kingdom)

Purpose - To study the optimization of a randomized control problem in an M/G/1 queue in which a removable and unreliable server may provide two phases of heterogeneous service to arriving customers. Design/methodology/approach - Arriving customers follow a Poisson process and require the first essential service (FES). As soon as FES of a customer is completed, the customer may leave the system or opt for the second optional service (SOS). The service times of FES channel and SOS channel are assumed to be general distribution functions. The server requires a startup time with random length before starting service. When the server is working, he may meet unpredictable breakdowns but is immediately repaired. The inter-breakdown time and repair time of the removable server are exponentially r...

2008-01-01

307

Oilseed crop with promise

Medical management of motility disorders in patients with intestinal failure: a focus on necrotizing enterocolitis, gastroschisis, and intestinal atresia

Cuphea, a relatively unknown plant outside the scientific community, might someday provide valuable oils for manufacturing soaps, detergents, surfactants, and lubricants, and may have medical, nutritional and dietetic applications as well. Unique properties of oils found in its seed make cuphea a potentially valuable new crop for the USA. Its seeds contain large quantities of medium-chain fatty acids such as lauric acid, which is used in manufacturing soaps and detergents. Other medium-chain fatty acids in cuphea can be used for clinical treatment of rare human ailments associated with fat absorption. New uses for the fatty acids in the seed may be developed and economic conditions may change, making the crop more or less valuable.

1986-02-01

308

British Library Electronic Table of Contents (United Kingdom)

Background: Intestinal failure (IF) is the dependence upon parenteral nutrition to maintain minimal energy requirements for growth and development. It may occur secondary to a loss of bowel length, disorders of motility, or both. Short bowel syndrome (SBS) is a malabsorptive state resulting from surgical resection, congenital defect, or diseases associated with loss of absorptive surface area. A particularly vexing problem is associated with whole bowel and/or segmental intestinal dysmotility. Motility disorders within the context of SBS and IF may relate to rapid intestinal transit secondary to loss of intestinal length, dysmotility associated with loss or poor antegrade peristalsis, or gastroparesis. Therapy may be classified into medical (prokinetic and antidiarrheal agents) and surgica...

2011-01-01

309

Loss of genetic connectivity and diversity in urban microreserves in a southern California endemic Jerusalem cricket (Orthoptera: Stenopelmatidae: Stenopelmatus n. sp. ?santa monica??)

British Library Electronic Table of Contents (United Kingdom)

Microreserves may be useful in protecting native arthropod diversity in urbanized landscapes. However, species that do not disperse through the urban matrix may eventually be lost from these fragments. Population extinctions may be precipitated by an increase in genetic differentiation among fragments and loss of genetic diversity within fragments, and these effects should become stronger with time. We analyzed population genetic structure in the dispersal limited Jerusalem cricket Stenopelmatus n. sp. ?santa monica?? in the Santa Monica Mountains and Simi Hills north of Los Angeles, California (CA), to determine the impacts of fragmentation over the past 70 years. MtDNA divergence was greater among urban fragments than within contiguous habitat and was positively correlated with fragment ...

2009-01-01

310

Integrated evolutionary neural network approach with distributed computing for congestion management

British Library Electronic Table of Contents (United Kingdom)

Electric supply industry is facing deregulation all over the world. Under deregulated power supply scenario, power transmission congestion has become more intensified and recurrent, as compared to conventional regulated power system. Congestion may lead to violation of voltage or transmission capacity limits, thus threatens the power system security and reliability. Also the growing congestion may lead to unanticipated divergent electricity pricing. Owing to these facts congestion management has become a crucial issue in the deregulated power system scenario. Fast and precise prediction of nodal congestion prices in real time deregulated/spot power market may enable market participants and system operators to keep pace with the congestion by taking preventive measures like transaction resc...

2010-01-01

311

Impacts of Imported Liquefied Natural Gas on Residential Appliance Components: Literature Review

Imaging pharmacodynamics in oncology. The potential significance of 'flares'

An increasing share of natural gas supplies distributed to residential appliances in the U.S. may come from liquefied natural gas (LNG) imports. The imported gas will be of a higher Wobbe number than domestic gas, and there is concern that it could produce more pollutant emissions at the point of use. This report will review recently undertaken studies, some of which have observed substantial effects on various appliances when operated on different mixtures of imported LNG. While we will summarize findings of major studies, we will not try to characterize broad effects of LNG, but describe how different components of the appliance itself will be affected by imported LNG. This paper considers how the operation of each major component of the gas appliances may be impacted by a switch to LNG, and how this local impact may affect overall safety, performance and pollutant emissions.

2009-12-09

312

Guidebook on design, construction and operation of pilot plants for uranium ore processing

The clinical use of "1"8F-fluorodeoxyglucose (FDG) positron emission tomography in monitoring anticancer treatment is expanding. At the same time a number of radiotracers aiming to image different aspects of tumour biology such as proliferation and apoptosis are being developed. However, the factors determining changes of radiotracer uptake parameters in response to treatment are not well understood. In many cases, cellularity may be the primary determinant of changes of FDG uptake and may confound the interpretation of metabolic changes. Early imaging assessments have in some cases showed transient increases of uptake parameters, commonly termed 'flares', which are likely to be unaffected by cellularity and directly reflect pharmacodynamics at a cellular level. In this review a number of settings where molecular imaging 'flares' have been described are discussed. Such changes may often be clinically informative and warrant ...

2010-04-01

313

Growth and defects of explosives crystals

The design, construction and operation of a pilot plant are often important stages in the development of a project for the production of uranium concentrates. Since building and operating a pilot plant is very costly and may not always be required, it is important that such a plant be built only after several prerequisites have been met. The main purpose of this guidebook is to discuss the objectives of a pilot plant and its proper role in the overall project. Given the wide range of conditions under which a pilot plant may be designed and operated, it is not possible to provide specific details. Instead, this book discusses the rationale for a pilot plant and provides guidelines with suggested solutions for a variety of problems that may be encountered. This guidebook is part of a series of Technical Reports on uranium ore processing being prepared by the IAEA's Division of Nuclear Fuel Cycle and Waste Management. 42 refs, ...

314

Growth and defects of explosives crystals

Large single crystals of PETN, RDX, and TNT can be grown easily from evaporating ethyl acetate solutions. The crystals all share a similar type of defect that may not be commonly recognized. The defect generates conical faces ideally mosaic crystals, and may account for the polymorphs'' of TNT and detonator grades of PETN. TATB crystals manufactured by the amination of trichlorotrinitrobenzene in dry toluene entrain two forms of ammonium chloride. One of these forms causes worm holes'' in the TATB crystals that may be the reason for its unusually low failure diameters. Strained HMX crystals form mechanical twins that can spontaneously revert back to the untwinned form when the straining force is removed. Large strains or temperatures above 100[degrees]C lock in the mechanical twins.

1992-01-01

315

Gallstones: choosing the right therapy despite vague clinical clues.

Large single crystals of PETN, RDX, and TNT can be grown easily from evaporating ethyl acetate solutions. The crystals all share a similar type of defect that may not be commonly recognized. The defect generates conical faces ideally mosaic crystals, and may account for the ``polymorphs`` of TNT and detonator grades of PETN. TATB crystals manufactured by the amination of trichlorotrinitrobenzene in dry toluene entrain two forms of ammonium chloride. One of these forms causes ``worm holes`` in the TATB crystals that may be the reason for its unusually low failure diameters. Strained HMX crystals form mechanical twins that can spontaneously revert back to the untwinned form when the straining force is removed. Large strains or temperatures above 100{degrees}C lock in the mechanical twins.

1992-12-01

316

Fetal MRI of pathological brain development

Therapeutic decisions are quite clear-cut for asymptomatic gallstone disease and acute cholecystitis. However, the appropriate therapeutic course for older patients with chronic cholecystitis may be less obvious. Watchful waiting may be reasonable for patients with mild and infrequent symptoms. For healthy patients, cholecystectomy is recommended if symptoms are becoming more frequent and severe. Laparoscopy may reduce the complication rate and be safely performed even in those with underlying medical illness. Oral dissolution therapy can be attempted for qualifying symptomatic patients who are at poor surgical risk or who refuse surgery. Shock wave lithotripsy and contact dissolution therapy show some promise but are currently experimental. PMID:8339941

1993-08-01

317

Enhancing supply chain solutions with the application of chaos theory

Because of the superior tissue contrast, high spatial resolution, and multiplanar capabilities, fetal magnetic resonance imaging (MRI) can depict fetal brain pathologies with high accuracy. Pathological fetal brain development may result from malformations or acquired conditions. Differentiation of these etiologies is important with respect to managing the actual pregnancy or counseling future pregnancies. As a widened ventricular system is a common hallmark of both maldevelopment and acquired conditions, it may cause problems in the differential diagnosis. Fetal MRI can provide detailed morphological information, which allows refinement of the diagnosis of ventricular enlargement in a large number of cases. Systematic work-up of morphological details that may be recognized on MR images provides an approach for achieving a correct diagnosis in cases of ventricle enlargement. (orig.)

2006-02-01

318

British Library Electronic Table of Contents (United Kingdom)

Purpose ? The purpose of this article is to expand the base of supply chain knowledge by applying chaos theory principles to selected supply chain functions. Design/methodology/approach ? Researchers borrow chaos theory from the natural sciences, provide a basic explanation, and then examine how it may be applied to enhance supply chain management techniques. Findings ? Chaos theory principles are used to assist in the examination of forecasting, product design, and inventory management challenges currently facing supply chain practitioners. Research limitations/implications ? Application of chaos theory to various supply chain issues and key functional areas may produce an increase in the level of understanding of supply chain ambiguity and how chaos theory may provide valuable insight in...

2006-01-01

319

Electrostatic discharge effects on EBW detonators

Black hole and baby universe in a thin film of 3He-A

With appropriate circuit resistance and inductance and sufficient stored energy, discharging a charged human body or component through an exploding bridgewire (EBW) detonator may cause the detonator to function or may damage the detonator. We have studied the effects of electrostatic discharge (ESD) on a number of exploding bridgewire detonators which were subjected to discharges which passed directly through the bridgewires (pin-to-pin), as well as discharges which passed from the bridge to the metal case of the detonator (pin-to-case). We have performed calculations to determine the values of inductance and resistance for which burst and melt may occur for given ESD sources, using a phenomenological model of bridgewire burst in a computer code called FIRESET. Bridge melt was computed using the same computer code, but using experimental values of bridge resistivity and specific heat up to melt. 13 refs., 5 figs.

1991-04-01

320

Adsorption behavior of strontium on kaolinite and montmorillonite and their mixtures

Condensed matter black hole analogues may provide guidance in grappling with difficult questions about the role of short distance physics in the Hawking effect. These questions bear on the very existence of Hawking radiation, the correlations it may or may not carry, the nature of black hole entropy, and the possible loss of information when a black hole evaporates. We describe a model of black hole formation and evaporation and the loss of information to a disconnected universe in a thin film of 3He-A, and we explain why the existence of Hawking radiation has not yet been demonstrated in this model. [We would like this article to be accessible to researchers in both condensed matter and gravitational physics, hence we include more than the usual amount of introductory material.

2002-01-01

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321

{sup 90}Sr, with a long half-life of 28.5 years, is the most dangerous strontium isotope. The adsorption behavior of radionuclides in the environment are closely related to the safe disposal of radioactive wastes. Since various types of minerals may exist in and around the repositories used for ultimate disposal of nuclear waste, the adsorption behavior of certain radionuclides onto and from these minerals and similar adsorbents should be studied in order to estimate the rates of transport of the nuclides in the event of water penetration into and through the repository. Information on the adsorption properties of the purified individual clay minerals may not be sufficient to predict the adsorption properties of a corresponding mixture, because these clay minerals may interact with each other and lead to modification of the adsorption properties of the mixture as compared to the pure minerals. The adsorption behavior of ...

2004-07-01

322

5. Sampling

XML Questions to consider

The sampling is described for radionuclide X-ray fluorescence analysis. Aerosols are captured with various filter materials whose properties are summed up in the table. Fine dispersed solid and liquid particles and gaseous admixtures may be captured by bubbling air through a suitable absorption solution. The concentration of small amounts of impurities from large volumes of air is done by adsorbing impurities on surfactants, e.g., activated charcoal, silica gel, etc. Aerosols may be captured using an electrostatic precipitator and aerosol fractions may be separated with a cascade impactor. Water sampling differs by the water source, i.e., ground water, surface water, rain or waste water. Soil samples are taken by probes. (ES).

1983-12-01

323

Indian Academy of Sciences (India)

are you exchanging data or metadata through specific agreements with a defined number of partners? or are you intending to make data or metadata available in a more "open" environment, with the expectation that it may be used by a potentially unlimited number of services? ...

324

Wound ballistics: the management of assault rifle injuries.

Wind Characteristics at the Vawt Test Facility.

Studies in our wound ballistics laboratory have shown that excellent healing can occur in complicated assault rifle wounds that are free of tension and well drained. A conservative approach to debridement and excision of tissue in uncomplicated extremity wounds may be a valid and resource-saving technique. PMID:2366941

1990-05-01

325

When and how to reactivate the activated charcoal?; Quand et comment regenerer le charbon actif?

A limited program of field measurements was undertaken in order to define the wind characteristics of the DOE/Sandia vertical axis wind turbine test facility. Because micrometeorological conditions under which a particular wind turbine is tested may have ...

1978-01-01

326

Vehicle Technologies Program: Fact #676: May 23, 2011 U.S. Refiners...

The activated charcoal is very appreciates for the water treatment. It do not generate by-product of treatment. In return it is saturated after some time and may releases pollutant compounds. When and how to get to its regeneration?.

2000-03-01

327

Validation of Cultivation and PCR Methods for Diagnosis of Lyme Neuroborreliosis?

fuel are produced from a barrel of crude oil by U.S. refiners. Other products such as jet fuel and heating oil make up the remaining one third. Graphic of a barrel of oil...

2011-10-09

328

Using Regulatory and Epistatic Networks to Extend the Findings of a Genome Scan: Identifying the Gene Drivers of Pigmentation in Merino Sheep

Borrelial infection may manifest with a wide range of clinical signs, and in many cases, microbiological findings are essential for a proper diagnosis. This study included 48 patients with a working...Full Text Available

2008-10-01

329

Use of clopidogrel in the reduction of myocardial damage during percutaneous coronary intervention

Extending genome wide association analysis by the inclusion of gene expression data may assist in the dissection of complex traits. We examined piebald, a pigmentation phenotype in both human and Merino...Full Text Available

330

Updated general technical guidelines for the environmentally sound management of wastes consisting of, containing or contaminated with persistent org

It is estimated that approximately a quarter of patients undergoing coronary intervention may have significant post-procedural creatinine (CK)/creatinine kinase myocardial band (CK-MB) elevations and...Full Text Available

2009-01-01

331

Update on the Role of Substantia Nigra Pars Reticulata in the Regulation of Seizures

Emissions and residues: Emissions may include, inter alia, nitrogen oxides, carbon monoxide, sulphur dioxide and other oxides

332

Understanding how out of pocket expenses, treatment value and patient characteristics influence treatment choices

The substantia nigra pars reticulata (SNR) represents an endogenous seizure suppressing system, which may be targeted to develop treatments for generalized or multifocal epilepsies. This review summarizes...Full Text Available

2006-05-01

333

Ultrasonography and color Doppler of proximal gluteal enthesitis in juvenile idiopathic arthritis: a descriptive study

PURPOSECost-sharing, intended to control the “over-use” of healthcare resources, may also reduce utilization of necessary services. The influence...Full Text Available

2010-01-01

334

Transient Ischemic Attack Before Nonlacunar Ischemic Stroke in the Elderly

BackgroundThe presence of enthesitis (insertional inflammation) in patients with juvenile idiopathic arthritis (JIA) is difficult to establish clinically and may influence classification...Full Text Available

335

Three Phases of Plant Response to Atmospheric CO₂ Enrichment ¹

Background:Several studies suggest transient ischemic attack (TIA) may be neuroprotective against ischemic stroke analogous to preinfarction angina's protection against...Full Text Available

2008-09-01

336

The relative timing of VMO and VL in the aetiology of anterior knee pain: a systematic review and meta-analysis

Several years of research on seven different plants (five terrestrial and two aquatic species) suggest that the beneficial effects of atmospheric CO₂ enrichment may be divided into three...Full Text Available

1988-05-01

337

The relationship of time and space

BackgroundAnterior knee pain (AKP) is a common musculoskeletal complaint. It has been suggested that one factor that may contribute to the presence of AKP is a delay in the recruitment...Full Text Available

338

The future of dentistry: new challenges, new directions.

We show that, in addition to radiation travelling at the speed of light, QED theory predicts a second type of radiation with an infinite velocity. We also show that charge, as it appears in the Dirac equation, may have a triune nature.

2004-01-01

339

The effect of IL6-174C/G polymorphism on postprandial triglyceride metabolism in the GOLDN study*

The challenge to our profession today is to improve the quality of oral health while overcoming both extrinsic and intrinsic factors which may adversely affect our progress toward this goal. The combined...Full Text Available

1990-05-01

340

The association between metal allergy, total hip arthroplasty, and revision

Chronically elevated interleukin-6 (IL-6) affects lipid and lipoprotein metabolism. Individuals genetically predisposed to higher IL-6 secretion may be at risk of dyslipidemia, especially during the...Full Text Available

2008-08-01

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341

The Non-linear Relationship between Gait Speed and Falls: The MOBILIZE Boston Study

Background and purpose It has been speculated that the prevalence of metal allergy may be higher in patients with implant failure. We compared the prevalence and cause of revisions following...Full Text Available

2009-12-04

342

The Importance of Poisoning vs. Road Traffic Injuries as a Cause of Death in Rural Sri Lanka

OBJECTIVESAlthough several studies suggest that slow gait speed is a predictor of falls, it may also be a protective mechanism to prevent falls. Further, fast walking...Full Text Available

2011-06-01

343

Terminal-differential algorithm for identification of local non homogeneity in article

BackgroundRoad traffic crashes are considered by the WHO to be the most important global cause of death from injury. However, this may not be true for large areas of rural Asia where...Full Text Available

344

Telephone reliability of the Frenchay Activity Index and EQ-5D amongst older adults

Terminal-differential algorithm for identification of local nonhomogeneities in items under control is developed on the basis of measurements of X-ray or gamma-radiation weakening. The algorithm may be applied by developing radiation schemes of nondestructive control, identifying inadmissible inclusions in the object under study

345

Systemic Naloxone Infusion May Trigger Spasticity in Patients With Spinal Cord Injury: Case Series

BackgroundOlder adults may find it problematic to attend hospital appointments due to the difficulty associated with travelling to, within and from a hospital facility for the purpose...Full Text Available

346

Study on effectiveness of transfusion program in thalassemia major patients receiving multiple blood transfusions at a transfusion centre in Western India

Background/Objective:Three patients with spinal cord injury (SCI) and 3 able-bodied (AB) patients were infused with naloxone during a study to examine their neuroendocrine...Full Text Available

2007-01-01

347

Stem Cell Research (Updated July 26, 2002).

Background:Children suffering from beta-thalassemia major require repeated blood transfusions which may be associated with dangers like iron overload and contraction of...Full Text Available

2010-07-01

348

Statistical methods for the blood beryllium lymphocyte proliferation test.

Embryonic stem cells have the ability to develop into virtually any cell in the body, and may have the potential to treat medical conditions such as diabetes and Parkinsons disease. On August 9, 2001, President Bush announced that for the first time feder...

2002-01-01

349

Star-formation triggers and chemical evolution

The blood beryllium lymphocyte proliferation test (BeLPT) is a modification of the standard lymphocyte proliferation test that is used to identify persons who may have chronic beryllium disease. A major...Full Text Available

1996-10-01

350

Sodium technology technical progress report, April, May, June 1975

Comparative studies of flocculent and grand-design spirals suggest that density waves are not the predominant trigger of star formation in most galaxies. Implications for chemical evolution are profound. It may be possible to ignore the details of the spiral-wave phenomenon in research aimed at unifying the chemical properties of spiral disks. 16 references.

1986-10-01

351

Sociology and Space Development

Progress is reported in the following areas: radioactivity control technology, FFTF sodium characterization system, corrosion and process control, and fuel failure monitoring systems for FFTF and CRBRP. (JWR)

1975-12-01

352

Social Deficits, Stereotypy, and Early Emergence of Repetitive Behavior in the C58/J Inbred Mouse Strain

As the presence of humans in space expands in scope and duration, the quality of life in space as well as on Earth becomes pertinent. .... Military uses of space, such as the introduction of space-based laser or particle beam weapons, may have a major impact on the way people think and relate to .... AIAA Student Journal. ...

353

Shielding of Sleeping Beauty DNA Transposon-delivered Transgene Cassettes by Heterologous Insulators in Early Embryonal Cells

Mouse lines with behavioral phenotypes relevant to symptoms in neurodevelopmental disorders may provide models to test hypotheses about disease etiology and to evaluate potential treatments....Full Text Available

2010-03-17

354

Serum Concentrations of Antibodies Against Vaccine Toxoids in Children Exposed Perinatally to Immunotoxicants

The Sleeping Beauty (SB) transposon system represents an important alternative to viral integrating vector systems but may, as its viral counterparts, be subject to transcriptional silencing. To investigate...Full Text Available

2009-01-01

355

Separating kindling and LTP: Lessons from studies of PKMzeta in developing and adult rats

BackgroundPolychlorinated biphenyls (PCBs) may cause immunotoxic effects, but the detailed dose–response relationship and possible vulnerable time windows of exposure are...Full Text Available

2010-10-01

356

Selective endothelin A-receptor blockade attenuates coronary microvascular dysfunction after coronary stenting in patients with type 2 diabetes

The kindling model of temporal lobe epilepsy and the memory model of long-term potentiation (LTP) may have common underlying mechanisms. This is evident by the demonstration that certain signaling...Full Text Available

2009-04-10

357

Rotational Subtotal Skin Electron Beam Therapy for Management of Carcinoma en Cuirasse

Background:Endothelin-1 may be involved in the development of diabetic microangiopathy. We studied the effect of endothelin-1 blockade on myocardial microcirculation during coronary...Full Text Available

2009-01-01

358

Role of Estrogen Receptor-? in the Regulation of Claudin-6 Expression in Breast Cancer Cells

Recurrent or primary carcinoma of the breast en cuirasse, which may involve the skin of the entire thorax and abdomen, cannot be controlled by means of surgery or conventional local irradiation. The...Full Text Available

1987-07-01

359

Risk of symptomatic heterotopic ossification following plate osteosynthesis in multiple trauma patients: an analysis in a level-1 trauma centre

PurposeIn our previous studies we showed that upregulating claudin-6 (CLDN6) expression may contribute to preventing breast cancer, and that 17β-estradiol induces a concentration-...Full Text Available

2011-03-01

360

Rhabdomyolysis and Acute Renal Failure After Fire Ant Bites

BackgroundSymptomatic heterotopic ossification (HO) in multiple trauma patients may lead to follow up surgery, furthermore the long-term outcome can be restricted. Knowledge of the...Full Text Available

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361

Relative threat and recognition ability in the responses of tropical mockingbirds to song playback

We describe a 59-year-old patient who developed acute renal failure because of rhabdomyolysis after extensive red fire ant bites. This case illustrates a serious systemic reaction that may occur from...Full Text Available

2007-01-01

362

Real-Time Adherence Monitoring for HIV Antiretroviral Therapy

It has been suggested that individual recognition based on song may be constrained by repertoire size in songbirds with very large song repertoires. This hypothesis has been difficult to test...Full Text Available

2007-04-01

363

Rapid Onset of Maternal Vocal Recognition in a Colonially Breeding Mammal, the Australian Sea Lion

Current adherence assessments typically detect missed doses long after they occur. Real-time, wireless monitoring strategies for antiretroviral therapy may provide novel opportunities to proactively...Full Text Available

2010-12-01

364

RU486 did not exacerbate cytokine release in mice challenged with LPS nor in db/db mice

BackgroundIn many gregarious mammals, mothers and offspring have developed the abilities to recognise each other using acoustic signals. Such capacity may develop at different rates...Full Text Available

365

RESPONSE LATENCY AS AN INDEX OF RESPONSE STRENGTH DURING FUNCTIONAL ANALYSES OF PROBLEM BEHAVIOR

BackgroundGlucocorticoids down-regulate cytokine synthesis and suppress inflammatory responses. The glucocorticoid receptor (GR) antagonist RU486 may exacerbate the inflammatory...Full Text Available

366

Quantitative and Qualitative Usage Data of an Internet-Based Asthma Monitoring Tool

Dependent variables in research on problem behavior typically are based on measures of response repetition, but these measures may be problematic when behavior poses high risk or when its occurrence...Full Text Available

2011-01-01

367

Quality of life in patients with head and neck cancers.

Background In May 2000, AstraZeneca launched a Web service for asthma patients and health-care providers called LinkMedica, which includes an asthma diary for...Full Text Available

368

Probing Compulsive and Impulsive Behaviors, from Animal Models to Endophenotypes: A Narrative Review

OBJECTIVE: The aim was to assess the psychosocial effects on the quality of life (QOL) of adults with head and neck cancer (HNC) and any gender variations with predictive factors that may influence...Full Text Available

2006-05-01

369

Preoperative body composition is influenced by the stage of operable pancreatic adenocarcinoma but does not predict survival after Whipple's procedure

Failures in cortical control of fronto-striatal neural circuits may underpin impulsive and compulsive acts. In this narrative review, we explore these behaviors from the perspective of neural processes...Full Text Available

2010-02-01

370

Preemptive analgesia: the prevention of neurogenous orofacial pain.

Objectives:Cachexia is common in pancreatic cancer and may have an influence on longterm survival but few studies have investigated this in patients with operable tumours. Therefore,...Full Text Available

2010-06-01

371

Predictions for the outcome of rodent carcinogenicity bioassays: identification of trans-species carcinogens and noncarcinogens.

Chronic neurogenous pain is often an extremely difficult condition to manage. In the orofacial region, trauma from injury or dental procedures may lead to the development of severe neuralgic pains and...Full Text Available

1995-01-01

372

Post-abscission, pre-dispersal seeds of Digitalis purpurea remain in a developmental state that is not terminated by desiccation ex planta

Thirty chemicals or substances currently undergoing long-term carcinogenicity bioassays in rodents have been used in a project to further evaluate methods and information that may have the capability...Full Text Available

1996-10-01

373

Polymorphisms in the epidermal growth factor receptor gene and the risk of primary lung cancer: a case-control study

Background and AimsSeed quality may be compromised if seeds are harvested before natural dispersal (shedding). It has been shown previously that slow or delayed drying can increase...Full Text Available

2009-03-01

374

Polymorphisms in IRF7 reduce IFN? responses of pDCs to HIV-1

BackgroundPolymorphisms in Epidermal Growth Factor Receptor (EGFR) gene may influence EGFR production and/or activity, thereby modulating susceptibility to lung...Full Text Available

375

Phytoestrogens: epidemiology and a possible role in cancer protection.

Recognition of HIV-1 ssRNA by TLR7 induces the production of the pro-inflammatory cytokines that may contribute to the systemic immune activation associated with HIV-1 disease progression. Here...Full Text Available

2011-03-13

376

Pelvic floor disorders and quality of life in women with self-reported irritable bowel syndrome

Because many diseases of the Western Hemisphere are hormone-dependent cancers, we have postulated that the Western diet, compared to a vegetarian or semivegetarian diet, may alter hormone production,...Full Text Available

1995-10-01

377

Pain characteristics of adults 65 years of age and older referred to a tertiary care pain clinic

SummaryBackgroundQuality of life among women with irritable bowel syndrome may be affected by pelvic floor disorders.AimFull Text Available

2010-02-01

378

PREVENTING TOBACCO USE AMONG YOUNG PEOPLE

BACKGROUND:Reports indicate that characteristics of older adults with chronic pain may be different than those of younger persons.OBJECTIVE:To study...Full Text Available

2008-09-01

379

Osteoid osteoma near the intervertebral foramen may induce radiculopathy through tumorous inflammation

Preventing tobacco use in youths may be an easier task than helping adults break the habit of smoking and overcome its ill effects. Using experimental procedures based on social work techniques,...Full Text Available

1986-01-01

380

Onboard Systems Record Unique Videos of Space Missions - NASA

Osteoid osteoma of the spine is a relatively rare bone-forming tumor. Pain that is worse at night and relieved by aspirin and muscle contracture are the most characteristic symptoms of spinal osteoid...Full Text Available

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381

Obstructive Jaundice after Bilioenteric Anastomosis: Transhepatic and Direct Percutaneous Enteral Stent Insertion for Afferent Loop Occlusion

May 1, 2011 ... Onboard Systems Record Unique Videos of Space Missions ... Corporation, An artist's rendering of LCROSS launching toward the Moon .... Station (ISS) as part of the Commercial Orbital Transportation Services program. ...

382

Number of aberrant crypt foci associated with adiposity and IGF1 bioavailability

Recurrent tumour after radical pancreaticoduodenectomy may cause obstruction of the small bowel loop draining the liver. Roux-loop obstruction presents a particular therapeutic challenge, since the...Full Text Available

2010-09-01

383

Non-traumatic fractures following seizures: two case reports

BackgroundDysregulation of the insulin-like growth factor (IGF) system, a common consequence of adiposity-induced insulin resistance, may be a key underlying mechanism...Full Text Available

2009-07-01

384

Neutron star collisions and the r-process

IntroductionSeizures with or without trauma may cause fractures that occur commonly in epileptic seizures. Fracture risk is less reported in non-epileptic seizures. Some metabolic...Full Text Available

385

Neurobehavioral effects of power-frequency electromagnetic fields.

It is shown that a natural consequence of the binary pulsar's evolution is a neutron star collision. Such a collision is expected to eject neutron-rich matter of an r-process character. Taking reasonable estimates for the number of such events over the history of the galaxy, it may be that they account for all of the r-process nuclei.

1982-01-01

386

Neoangiogenesis in early cervical cancer: Correlation between color Doppler findings and risk factors. A prospective observational study

Some laboratory experiments have suggested that power-frequency electric and magnetic fields (EMF) may be capable of influencing calcium efflux from cell membranes, pineal function, and circadian rhythms....Full Text Available

1993-12-01

387

Nasal retention of budesonide and fluticasone in man: Formation of airway mucosal budesonide-esters in vivo

BackgroundThe aim of the present article was to evaluate whether angiogenic parameters as assessed by transvaginal color Doppler ultrasound (TVCD) may predict those prognostic factors...Full Text Available

388

NASA/CR--- _'j_.,- 207636 - NASA Technical Report Server (NTRS)

AimsThe efficacy of topical glucocorticosteroids in rhinitis and asthma is likely to depend on drug retention in the airway mucosa. With fluticasone propionate, retention may be...Full Text Available

2001-02-01

389

N 7 2- 24 8 0 9 - NASA Technical Report Server (NTRS)

adenines, like adenine itself, may fllerefore have played an important role in the. RNA world. Griffin, B.E., Haslam, W.J., Reese, C. B.: 1964, J. Mo/. ...

390

Muscle glycogen content and glucose uptake during exercise in humans: influence of prior exercise and dietary manipulation

4-4 Contribution of CM Control Law Terms in. Percent of Total; S Law Top, 9, Law ...... In any given block, some control law terms may be ...

391

Municipal Heat Wave Response Plans

There are many factors that can influence glucose uptake by contracting skeletal muscle during exercise and although one may be intramuscular glycogen content, this relationship is at present not fully...Full Text Available

2002-05-15

392

Mouth Opening During Sleep may be a Critical Predictor of Surgical Outcome after Uvulopalatopharyngoplasty for Obstructive Sleep Apnea

Approximately 400 people die from extreme heat each year in the United States, and the risk of heat waves may increase as a result of global climate change. Despite the risk of heat-related morbidity...Full Text Available

2004-09-01

393

Mortality of persons resident in the vicinity of electricity transmission facilities.

Study Objectives:To evaluate the value of mouth opening during sleep for predicting surgical outcomes after uvulopalatopharyngoplasty (UPPP).Methods:Retrospectively,...Full Text Available

2010-04-15

394

Monthly energy review, May 1993

Several studies have raised the possibility that exposure to electrical and/or magnetic fields may be injurious to health in particular by the promotion or initiation of cancer. To investigate whether...Full Text Available

1986-02-01

395

Modular control of human walking: Adaptations to altered mechanical demands

The Monthly Energy Review provides an overview of the production, distribution, and consumption of energy derived from petroleum natural gas, coal, electricity, and nuclear energy. It also discusses oil and gas resource development, energy prices, and issues relevant to international energy markets.

1993-05-01

396

Modern Techniques of Pain Management

Studies have shown that the nervous system may adopt a control scheme in which synergistic muscle groups are controlled by common excitation patters, or modules, to simplify the coordination...Full Text Available

2010-02-10

397

Millions of battery stores; Millionen kleine Speicher

Even clinicians who keep up with the research literature on pain mechanisms may find themselves uncertain when trying to bring these new theories down to practical application for a patient with pain....Full Text Available

1988-01-01

398

Methodology and applications within geophysics, astronomy, and geodesy

It is still a vision at the time being, but wind power and electric cars may complement each other efficiently: Batteries are charged when the power demand of the grid has been saturated. In case of sudden demand peaks, the stored power is transmitted back into the grid. (orig.)

2007-07-15

399

Metal finishing and vacuum processes groups, Materials Fabrication Division progress report, March-May 1984

An interdisciplinary workshop on inversion methodology and applications within geophysics, astronomy, and geodesy was held in Aarhus on May 19th, 1992. 41 scientists participated in four sessions, with 3 review lectures, an open poster session, 4 specialist contributions, and a round table discussion. (EG)

1992-01-01

400

Metabolic syndrome in subjects with type-2 diabetes mellitus.

Progress is reported in fabrication and coating activities being conducted for the weapons program, nuclear test program, nuclear design program, magnetic fusion program, and miscellaneous applications. (DLC)

1984-07-11

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

401

Maternal Obesity Induced by Diet in Rats Permanently Influences Central Processes Regulating Food Intake in Offspring

BACKGROUND: Each component of metabolic syndrome (MS) conveys increased cardiovascular disease risk, but as a combination they become much more powerful. Vigorous early management of the syndrome may...Full Text Available

2004-06-01

402

Mass Treatment with Azithromycin for Trachoma Control: Participation Clusters in Households

Hypothalamic systems which regulate appetite may be permanently modified during early development. We have previously reported hyperphagia and increased adiposity in the adult offspring of rodents fed...Full Text Available

403

Management and outcome of abdominal shotgun wounds. Trauma score and the role of exploratory laparotomy.

BackgroundMass treatment to trachoma endemic communities is a critical part of the World Health Organization SAFE strategy. However, non-participation may not be at random, affecting...Full Text Available

404

Male Syrian Hamsters Demonstrate a Conditioned Place Preference for Sexual Behavior and Female Chemosensory Stimuli

OBJECTIVE: The management and outcome of 138 abdominal shotgun wounds were examined over a 5-year period. SUMMARY BACKGROUND DATA: It has been proposed that exploratory laparotomy may be unnecessary...Full Text Available

1995-03-01

405

Magnetic mirror fusion systems: Characteristics and distinctive features

Sexual behavior is a natural reward for many rodent species, and it often includes chemosensory-directed components. Chemosensory stimuli themselves may also be rewarding. Conditioned place...Full Text Available

2010-08-01

406

Low-Level Exposure to Multiple Chemicals: Reason for Human Health Concerns?

A tutorial account is given of the main characteristics and distinctive features of conceptual magnetic fusion systems employing the magnetic mirror principle. These features are related to the potential advantages that mirror-based fusion systems may exhibit for the generation of economic fusion power.

1987-08-10

407

Lipocalin 2 in the central nervous system host response to systemic lipopolysaccharide administration

BackgroundA key question in the risk assessment of exposures to multiple chemicals is whether mixture effects may occur when chemicals are combined at low doses which individually...Full Text Available

2007-12-01

408

Linking Gene Expression and Functional Network Data in Human Heart Failure

BackgroundLipocalin 2 (Lcn2) is a bacteriostatic factor that may also modulate cellular function, however, little is known concerning the expression or role of Lcn2 in CNS inflammation....Full Text Available

409

Large-scale cross-species oncogenomics identifies candidate oncogenes and tumor suppressor genes

BackgroundGene expression profiling and the analysis of protein-protein interaction (PPI) networks may support the identification of disease bio-markers and potential drug targets....Full Text Available

410

Lack of Association Between Prokineticin 2 Gene and Japanese Methamphetamine Dependence

While genomic alterations identified in human tumors using techniques such as comparative genomic hybridisation (CGH) may be recurrent, they frequently encompass large regions, in some cases...Full Text Available

2010-02-01

411

Laboratory Investigation of Steam Adsorption in Geothermal Reservoir Rocks.

Disruption of circadian rhythms may be involved in the pathophysiology of psychiatric disorders, including drug addiction. Recently, we detected the significant association between prokineticin 2 receptor...Full Text Available

2011-03-01

412

Knowledge and behaviour of nurse/midwives in the prevention of vertical transmission of HIV in Owerri, Imo State, Nigeria: a cross-sectional study

Some vapor-dominated geothermal reservoirs and low-permeability gas reservoirs exhibit anomalous behavior that may be caused by surface adsorption. For example, geothermal reservoirs in the Larderello area of Italy and reservoirs in the Geysers Geothermal...

1988-01-01

413

KJNWFZ Concept Paper May6-2010

BackgroundMother-to-Child Transmission (MTCT) of HIV remains the main mode of acquisition of HIV in children. Transmission of HIV may occur during pregnancy, delivery or breastfeeding....Full Text Available

414

Investigation and management of adrenal disease

KOREA-JAPAN NUCLEAR WEAPON FREE ZONE (KJNWFZ) CONCEPT PAPER ...A Korea-Japan2 Nuclear Weapon Free Zone (hereafter KJNWFZ) is a new concept.Once realized, ...Finally, we outline the key elements of the Korea-Japan NWFZ proposed in this paper, noting

415

British Library Electronic Table of Contents (United Kingdom)

Disorders of the adrenal gland are rare and complex, with many potential pitfalls in their management. An understanding of embryology, anatomy, physiology and biochemistry is crucial. Surgical treatment may be required for syndromes of hormonal excess and/or suspicion of neoplasia.

2011-01-01

416

Intracellular Copper Does Not Catalyze the Formation of Oxidative DNA Damage in Escherichia coli?

Interactive Toxicity of Inorganic Mercury and Trichloroethylene in Rat and Human Proximal Tubules

Because copper catalyzes the conversion of H₂O₂ to hydroxyl radicals in vitro, it has been proposed that oxidative DNA damage may be an important component of copper toxicity....Full Text Available

2007-03-01

417

In Vivo Measurement of Indole-3-acetic Acid Decarboxylation in Aging Coleus Petiole Sections

Simultaneous or prior exposure to one chemical may alter the concurrent or subsequent response to another chemical, often in unexpected ways. This is particularly true when the two chemicals...Full Text Available

2007-06-15

418

Improvements in or relating to fluid operated devices for moving articles

The concentration of indoleacetic acid (IAA) in plant tissues is regulated, in part, by its rate of decarboxylation. However, the commonly used in vitro assays for IAA oxidase may not...Full Text Available

1983-09-01

419

Improvement of Aroma in Transgenic Potato As a Consequence of Impairing Tuber Browning

The patent relates to fluid operated devices for moving articles. The machine may be used in filling a nuclear fuel canister with fuel pellets where there is a tendency for out of squareness of pellets to produce a jam condition readily cleared by a modest force. (U.K.).

1984-09-27

420

Imaging Alzheimer Pathology in Late-Life Depression With PET and Pittsburgh Compound-B

Sensory analysis studies are critical in the development of quality enhanced crops, and may be an important component in the public acceptance of genetically modified foods. It has recently been established...Full Text Available

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421

Identification of environmental chemicals with estrogenic activity using a combination of in vitro assays.

There is increasing evidence for an empiric link between late-life depression and Alzheimer disease (AD). The neuropathology of AD, previously only confirmed at autopsy, may now be detectable...Full Text Available

2008-01-01

422

Iatrogenic post-intubation tracheal rupture treated conservatively without intubation: a case report

Environmental chemicals that function as estrogens have been suggested to be associated with an increase in disease and dysfunctions in animals and humans. To characterize chemicals that may act as...Full Text Available

1996-10-01

423

Hybridization among Three Native North American Canis Species in a Region of Natural Sympatry

BackgroundTracheal rupture is a rare but life-threatening complication that most commonly occurrs after blunt trauma to the chest, but which may also complicate tracheal intubation....Full Text Available

424

Hostility May Explain the Association between Depressive Mood and Mortality: Evidence from the French GAZEL Cohort Study

BackgroundPopulation densities of many species throughout the world are changing due to direct persecution as well as anthropogenic habitat modification. These changes may induce...Full Text Available

425

Homozygous SLC2A9 Mutations Cause Severe Renal Hypouricemia

BackgroundDepressive mood is associated with mortality. Because personality has been found to be associated with depression and mortality as well, we aimed to test...Full Text Available

2010-02-01

426

High-Risk Populations Identified in Childhood Cancer Survivor Study Investigations: Implications for Risk-Based Surveillance

Hereditary hypouricemia may result from mutations in the renal tubular uric acid transporter URAT1. Whether mutation of other uric acid transporters produces a similar phenotype is unknown. We studied...Full Text Available

2010-01-01

427

High Shear Stress at the Surface of Enhancing Plaque in the Systolic Phase is Related to the Symptom Presentation of Severe M1 Stenosis

Childhood cancer survivors often experience complications related to cancer and its treatment that may adversely affect quality of life and increase the risk of premature death. The purpose of this...Full Text Available

2009-05-10

428

Gastrointestinal obstruction due to plaster ingestion: a case-report

The computational fluid dynamics methods for the limited flow rate and the small dimensions of an intracranial artery stenosis may help demonstrate the stroke mechanism in intracranial atherosclerosis....Full Text Available

2011-07-01

429

BackgroundPlaster ingestion forming gastric bezoar is a strange way to attempt suicide and this method has not yet been reported. It may lead to a mechanical obstruction of the gut,...Full Text Available

430

GRB 090510 - GCN - NASA

Finasteride in the treatment of patients with benign prostatic hyperplasia: a review

May 10, 2009 ... The estimated magnitude is 18.95 with a 1-sigma error of about 0.17. ... The points of contact for this burst is Masanori Ohno .... 80 seconds after the BAT trigger with a settling exposure in the UVOT v filter. ...

431

Fetal tissue sampling--indications, techniques, complications, and experience with sampling of fetal skin, liver, and muscle.

Benign prostatic hyperplasia (BPH) is a complex and progressive disease common in aging men. While associated with bothersome lower urinary tract symptoms, it may also result in additional serious complications...Full Text Available

2009-01-01

432

Familial premature ovarian failure.

Invasive prenatal testing has become an important way to evaluate fetuses at increased risk for hereditary disorders. In utero sampling of fetal skin, liver, and muscle may be required to diagnose before-birth...Full Text Available

1993-09-01

433

Evidence-based guidelines for the pharmacological treatment of postmenopausal osteoporosis: a consensus document by the Belgian Bone Club

Premature menopause, ovarian failure younger than 40 years of age, is relatively rare but may preclude childbearing for some women who delay attempts at fertility. We present five kindreds in which...Full Text Available

1984-11-01

434

Evaluating professionalism in medical undergraduates using selected response questions: findings from an item response modelling study

Several drugs are available for the management of postmenopausal osteoporosis. This may, in daily practice, confuse the clinician. This manuscript offers an evidence-based update of previous treatment...Full Text Available

2010-10-01

435

Estimating the Costs of Unintentional Injuries

BackgroundProfessionalism is a difficult construct to define in medical students but aspects of this concept may be important in predicting the risk of postgraduate misconduct. For...Full Text Available

436

Environmental Effects and Energy Efficiency in Building Design: A Green Building Approach. Part 2. Basic Data for Environmental Effects.

... A description of the National Safety Council's current cost estimating procedures may be found in the Technical Appendix ... the 1993 bulletin, the Council extensively revised its cost estimating procedures. New components were added, new benchmarks and ...

437

Energy Performance Contracting for New Buildings

The development of comfort in buildings throughout the centuries was influenced by the demand for progress, wealth and innovation in various respects. At present, it seems that progress may only be possible by taking into account the environment and creat...

1993-01-01

438

Elastic stable intramedullary nailing of midclavicular fractures in athletes

situ by isolating portions of the building envelope and performing tests .MAXIMUM ALLOWED LOAD ...and shall identify commissioning team members who will perform testing and prepare documentation.The commissioning agent may be

439

Effects of Kombucha on oxidative stress induced nephrotoxicity in rats

Background: Intramedullary fixation of midclavicular fractures may be a better option than non-operative treatment for high performance/professional athletes because of the potential reduction...Full Text Available

2003-12-01

440

Effects of Intrathecal Baclofen on Perceived Sexual Functioning in Men With Spinal Cord Injury

BackgroundTrichloroethylene (TCE) may induce oxidative stress which generates free radicals and alters antioxidants or oxygen-free radical scavenging enzymes.MethodsTwenty...Full Text Available

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441

Effects of Depot Medroxyprogesterone Acetate and 20 ?g Oral Contraceptives on Bone Mineral Density

Background/Objective:Reports in the literature suggest that administration of intrathecal baclofen to control spasticity may have deleterious effects on erectile function...Full Text Available

2008-01-01

442

Effect of Leucovorin (Folinic Acid) on the Developmental Quotient of Children with Down's Syndrome (Trisomy 21) and Influence of Thyroid Status

OBJECTIVEHormonal contraceptives may adversely affect bone mineral density . However, racial differences and the reversibility of these changes are poorly understood....Full Text Available

2008-10-01

443

Effect of Breast Milk Lead on Infant Blood Lead Levels at 1 Month of Age

BackgroundSeven genes involved in folate metabolism are located on chromosome 21. Previous studies have shown that folate deficiency may contribute to mental retardation in Down's...Full Text Available

444

Early auditory experience generates long-lasting memories that may subserve vocal learning in songbirds

Nursing infants may be exposed to lead from breast milk, but relatively few data exist with which to evaluate and quantify this relationship. This route of exposure constitutes a potential infant hazard...Full Text Available

2004-10-01

445

Early Wound Healing Following One-Stage Dental Implant Placement With and Without Antibiotic Prophylaxis: A Pilot Study

In both humans and songbirds, infants learn vocalizations by imitating the sounds of adult tutors with whom they interact during an early sensitive period. Vocal learning occurs in few animal taxa;...Full Text Available

2006-01-24

446

ENVIRONMENTAL SCIENCE TECHNOLOGY. (R822721C651)

BackgroundOne-stage implant placement has clinically acceptable treatment outcomes. Among other advantages, it may allow investigation of early wound healing. The...Full Text Available

2008-10-01

447

EFFECT OF THE DIGENEAN PARASITE PROTEROMETRA MACROSTOMA ON HOST MORPHOLOGY IN THE FRESHWATER SNAIL ELIMIA LIVESCENS

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

448

Dynamical evolution driven by bars and interactions Input from numerical simulations

... 1984; Martin-Mora et al., 1995), and parasitism (Rothschild and Rothschild, 1939; Pesigan et al., 1958; Moose, 1963; Pan, ... effects of digeneans are variable; they may enhance (Rothschild and Rothschild...

449

Dr. Ellen Ochoa - Welcome to Latina Women of NASA home page

We discuss the evolution of a disc galaxy due to the formation of a bar and, subsequently, a peanut. After the formation stage there is still considerable evolution, albeit slower. In purely stellar cases the pattern speed of the bar decreases with time, while its amplitude grows. However, if a considerable gaseous component is present in the disc, the pattern speed may increase with time, while the bar strength may decrease. In some cases the gas can be brought sufficiently close to the center to create a strong central concentration, which, in turn, may modify the properties of the bar. More violent evolution can take place during interactions, so that some disc substructures can be either formed or destroyed in a time scale which is small compared to a Hubble time. These include spirals, bars, bridges, tails, rings, thick discs and bulges. In some cases interactions may lead to mergings. We briefly ...

2002-01-01

450

Dosing Recommendations for Continuous Venovenous Hemodiafiltration with AN69 Filter Membranes and Prismaflex Dialyzers

Feb 28, 2001 ... Dr. Ellen Ochoa was born on May 10, 1958 in Los Angeles, CA, but considers Las Mesa, California to be her hometown. She received her ...

451

Does school attendance reduce the risk of youth homelessness in Tanzania?

Background:Continuous renal replacement therapy is used to manage fluid and solute imbalances in critically ill patients but may affect the clearance of concurrently administered...Full Text Available

2009-11-01

452

Disturbance of inorganic phosphate metabolism in diabetes mellitus: temporary therapeutic intervention trials

BackgroundThis paper is based on data gathered from a 2006 survey of 1,098 "street children" in Northern Tanzania. It examines the role that school may play in preventing the migration...Full Text Available

453

Distributed Denial of Service is a Scalability Problem

A paradoxical metabolic imbalance in inorganic phosphate occurs from the early onset of diabetes and may lead to a reduction of high energy phosphates and tissue hypoxia. These changes take place in...Full Text Available

454

Developmental Changes in Pituitary Adenylate Cyclase Activating Polypeptide Expression during the Perinatal Period: Possible Role in Fetal Gonadotroph Regulation

Distributed denial of service attacks are often considered a security problem. While this may be the way to view the problem with today's Internet, new network architectures attempting to address the issue should view it as a scalability problem. In addition, they need to address the problem based on a rigorous foundation.

2011-01-01

455

Detection of TP53 mutation, loss of heterozygosity and DNA content in fine-needle aspirates of breast carcinoma.

Normal reproductive functioning may require secretion of LH independently of FSH. Variation in GnRH pulse frequency and inhibin negative feedback are mechanisms for differential gonadotropin regulation;...Full Text Available

2009-10-01

456

Dengue virus protein recognition by virus-specific murine CD8+ cytotoxic T lymphocytes.

Recent preclinical and clinical data suggest that TP53 status and TP53 mutations may be important in determining tumour aggressiveness and therapy response. In this study we investigate the feasibility...Full Text Available

1998-01-01

457

Demonstration of Black Liquor Gasification at Big Island

The identification of the protein targets for dengue virus-specific T lymphocytes may be useful for planning the development of subunit vaccines against dengue. We studied the recognition by murine...Full Text Available

1993-02-01

458

Cylindrical stretched flame

This Final Technical Report provides an account of the project for the demonstration of Black Liquor Gasification at Georgia-Pacific LLC's Big Island, VA facility. This report covers the period from May 5, 2000 through November 30, 2006.

2007-04-14

459

Cyberpharmacies and the role of the US Food And Drug Administration

For sufficiently cool remote gases, the cylindrical stretched flame shows classical ignition-extinction behavior. For remote gas temperatures close to the adiabatic flame temperature, the flame response is qualitatively different, with negative flame speed solutions which may be physically accessible.

1984-06-01

460

Consequences of unlocking the cardiac myosin molecule in human myocarditis and cardiomyopathies

The sale of consumer products over the Internet has grown rapidly, including the sale of drugs. While the growth in online drug sales by reputable pharmacies is a trend that may provide benefits to...Full Text Available

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461

Comparison of deferral rates using a computerized versus written blood donor questionnaire: a randomized, cross-over study [ISRCTN84429599

Myocarditis, often initiated by viral infection, may progress to autoimmune inflammatory heart disease, dilated cardiomyopathy and heart failure. Although cardiac myosin is a dominant autoantigen...Full Text Available

2008-09-01

462

Comparison and co-relation of invasive and noninvasive methods of ejection fraction measurement.

BackgroundSelf-administered computer-assisted blood donor screening strategies may elicit more accurate responses and improve the screening process.MethodsRandomized...Full Text Available

463

Coal to liquids technology (Overview - Research)

BACKGROUND: Accurate estimation of left ventricular ejection fraction (LVEF) has assumed great significance in the era of automatic implantable cardioverter defibrillators (AICDs), and a low EF may...Full Text Available

2007-11-01

464

Cluster analysis of behavioural and event-related potentials during a contingent negative variation paradigm in remitting-relapsing and benign forms of multiple sclerosis

... After completing a review into direct coal liquefaction research carried out in Australia and internationally, CSIRO has identified potential new science and technology developments that may improve the cost and viability of CTL in a greenhouse gas-constrained environment. We are conducting research to: determine the optimum ...

465

Clinical Application of Ischemic Preconditioning in the Elderly

BackgroundEvent-related potentials (ERPs) may be used as a highly sensitive way of detecting subtle degrees of cognitive dysfunction. On the other hand, impairment of cognitive skills...Full Text Available

466

Characterization of Airborne Microbial Communities at a High-Elevation Site and Their Potential To Act as Atmospheric Ice Nuclei?

A mild stress such as brief ischemic episodes may protect the heart from a successive and more prolonged myocardial ischemia (ischemic preconditioning). This phenomenon is considered a typical “hormetic...Full Text Available

467

Chapter 2, A Quick-look at your Pay - NASAPeople

Bacteria and fungi are ubiquitous in the atmosphere. The diversity and abundance of airborne microbes may be strongly influenced by atmospheric conditions or even influence atmospheric conditions themselves...Full Text Available

2009-08-01

468

Calcification of subcutaneously implanted type I collagen sponges. Effects of formaldehyde and glutaraldehyde pretreatments.

You receive an annuity if eligible -- requires 18 months service for FERS; and 60 ... You may use up to 104 hours of your accrued sick leave to care for sick family ...

469

CART Peptides Regulate Psychostimulants and May be Endogenous Antidepressants

Although collagen-containing implants are widely used in various surgical applications, there has been relatively little attention paid to the possibility that this type of biomaterial may undergo pathologic...Full Text Available

1986-01-01

470

Breast Cancer Diagnosis Using a Microfluidic Multiplexed Immunohistochemistry Platform

CART peptides are endogenous neurotransmitters that are involved in a variety of physiologic functions. Injection of CART 55-102 into the nucleus accumbens produces no effect, but when co-administered...Full Text Available

2011-03-01

471

Bone mineral density of the proximal femur after hip resurfacing arthroplasty: 1-year follow-up study

BackgroundBiomarkers play a key role in risk assessment, assessing treatment response, and detecting recurrence and the investigation of multiple biomarkers may also prove useful...Full Text Available

472

Bilateral transtibial amputation with concomitant thoracolumbar vertebral collapse in a Sichuan earthquake survivor

BackgroundHip resurfacing arthroplasty (HRA) is considered a bone-preserving procedure and may eliminate proximal femoral stress shielding and osteolysis. However, in addition to...Full Text Available

473

Bacterial Particle Endocytosis by Epithelial Cells Is Selective and Enhanced by Tumor Necrosis Factor Receptor Ligands?

The devastating earthquake in Sichuan, China on 12 May 2008 left thousands of survivors requiring medical care and intensive rehabilitation. In view of this great demand, the Chinese Speaking Orthopaedic...Full Text Available

474

Attachment Stimulates Exopolysaccharide Synthesis by a Bacterium

Bacterial pathogens use virulence strategies to invade epithelial barriers, but active processes of epithelial cells may also contribute to the endocytosis of microbial particles. To focus on the latter,...Full Text Available

2009-03-01

475

Association of Thyroid Hormone Concentrations with Levels of Organochlorine Compounds in Cord Blood of Neonates

This study examined the hypothesis that solid surfaces may stimulate attached bacteria to produce exopolymers. Addition of sand to shake-flask cultures seemed to induce exopolymer synthesis by a number...Full Text Available

1993-10-01

476

Association between erectile dysfunction and cardiovascular risk in individuals with type-2 diabetes without overt cardiovascular disease

BackgroundThyroid hormones are important regulators of brain development. During critical periods of development, even transient disorders in thyroid hormone availability may lead...Full Text Available

2007-12-01

477

Analysis of Protein Covalent Modification by Xenobiotics using a Covert Oxidatively Activated Tag

Background:Erectile dysfunction in type-2 diabetes may be an independent marker for coronary artery disease. Present study was undertaken to investigate whether type-2 diabetic...Full Text Available

2009-10-01

478

Analysis of 210 US Army Deaths in Vietnam from July to September 1967.

Numerous xenobiotics, including therapeutics agents, are substrates for bioactivation to electrophilic reactive intermediates that may covalently modify biomolecules. Selective estrogen receptor...Full Text Available

2005-09-01

479

An Update on the Controversies in Anemia Management in Chronic Kidney Disease: Lessons Learned and Lost

US Army casualty deaths in the Republic of Vietnam were analyzed to provide information on wound ballistics that may be used by interested branches of the services on the subjects of casualty reduction, wounding, mechanisms, and evaluation of hostile weap...

1970-01-01

480

Altered myocardial substrate metabolism is associated with myocardial dysfunction in early diabetic cardiomyopathy in rats: studies using positron emission tomography

Background. Erythropoietin deficiency and anemia occur in Chronic Kidney Disease (CKD) and may be treated with Erythropoietin Stimulating Agents (ESAs). The optimal hemoglobin,...Full Text Available

2011-01-01

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481

Advertising and disclosure of funding on patient organisation websites: a cross-sectional survey

BackgroundIn vitro data suggest that changes in myocardial substrate metabolism may contribute to impaired myocardial function in diabetic cardiomyopathy (DCM)....Full Text Available

482

Adult Male Circumcision: Effects on Sexual Function and Sexual Satisfaction in Kisumu, Kenya

BackgroundPatient organisations may be exposed to conflicts of interest and undue influence through pharmaceutical industry (Pharma) donations. We examined advertising and disclosure...Full Text Available

483

Adaptive plasticity of mammalian sperm production in response to social experience

IntroductionMale circumcision is being promoted for HIV prevention in high-risk heterosexual populations. However, there is a concern that circumcision may impair...Full Text Available

2008-11-01

484

Active magnetic regenerator

Sperm competition theory predicts that males should invest prudently in ejaculates according to levels of female promiscuity. Males may therefore be sensitive to cues in their social environment associated...Full Text Available

2009-02-22

485

APOD: 2006 May 28 - GRO J1655 40: Evidence for a Spinning Black...

The disclosure is directed to an active magnetic regenerator apparatus and method. Brayton, Stirling, Ericsson, and Carnot cycles and the like may be utilized in an active magnetic regenerator to provide efficient refrigeration over relatively large temperature ranges.

1982-01-01

486

APOD: 2001 May 8 - GRO J1655 40: Evidence for a Spinning Black...

Black Hole Drawing Credit: A. Hobart, CXC Explanation: In the center of a swirling whirlpool of hot gas is likely a beast that has never been seen directly: a black hole....

2011-10-07

487

APOD: 2000 May 27 - M51: The Center Of The Whirlpool

Black Hole Drawing Credit: A. Hobart, CXC Explanation: In the center of a swirling whirlpool of hot gas is likely a beast that has never been seen directly: a black hole....

2011-10-07

488

A structural determinant required for RNA editing

will download the highest resolution version available. M51: The Center Of The Whirlpool Credit: N. Panagia (STScI, ESA), NASA Explanation: In the center of M51, a spiral...

2011-10-07

489

A semi-qualitative study of attitudes to vaccinating adolescents against human papillomavirus without parental consent

RNA editing by adenosine deaminases acting on RNAs (ADARs) can be both specific and non-specific, depending on the substrate. Specific editing of particular adenosines may depend on the overall sequence...Full Text Available

2011-07-01

490

A genome-wide study of PDZ-domain interactions in C. elegans reveals a high frequency of non-canonical binding

BackgroundThe first vaccine to prevent human papillomavirus (HPV) and cervical cancer has been licensed, and in future, vaccination may be routinely offered to 10–14 year...Full Text Available

491

BackgroundProteins may evolve through the recruitment and modification of discrete domains, and in many cases, protein action can be dissected at the domain level. PDZ domains are...Full Text Available

492

A first for Samarinda

A decrease in retinal progenitor cells is associated with early features of diabetic retinopathy in a model that combines diabetes and hypertension

Gas-fired combined cycle plant may be the norm when it comes to new plant but it comes in a variety of shapes and sizes. Samarinda uses aero-derivatives with the famous Rolls-Royce RB211 gas generator. (author)

1996-10-01

493

A decision-analytic approach to define poor prognosis patients: a case study for non-seminomatous germ cell cancer patients

PurposeHyperglycemia and hypertension contribute to the development of diabetic retinopathy, and this may involve alterations in the normal retinal cell cycle. In this work, we examined...Full Text Available

494

A cost-utility analysis of nursing intervention via telephone follow-up for injured road users

BackgroundClassification systems may be useful to direct more aggressive treatment to cancer patients with a relatively poor prognosis. The definition of 'poor prognosis' often lacks...Full Text Available

495

A comparison of iterative algorithms and a mixed approach for in-line x-ray phase retrieval

BackgroundTraffic injuries can cause physical, psychological, and economical impairment, and affected individuals may also experience shortcomings in their post-accident care and...Full Text Available

496

A Suppression Subtractive Hybridization Approach Reveals Niche-Specific Genes That May Be Involved in Predator Avoidance in Marine Synechococcus Isolates

Previous studies have shown that iterative in-line x-ray phase retrieval algorithms may have higher precision than direct retrieval algorithms. This communication compares three iterative phase...Full Text Available

2009-08-15

497

45 CFR 1703.202 - Provisions under which a meeting may be closed.

Picocyanobacteria of the genus Synechococcus are important contributors to marine primary production and are ubiquitous in the world's oceans. This genus is genetically diverse, and...Full Text Available

2006-04-01

498

29 CFR 1926.602 - Material handling equipment.

...identity of a confidential source and, in the case of...lawful national security intelligence investigation, confidential...only by the confidential source, (v) Disclose investigative...exercise its authority to open to public observation...requires that the meeting be...

2010-10-01

499

+ 2004 - The NASA Glenn Research Center Technical Report Server

...Pneumatic-tired earth-moving haulage equipment (trucks, scrapers, tractors...Pneumatic-Tired Earthmoving Haulage Equipment. An employer may, of course...pneumatic-tired earthmoving haulage equipment, is suspended pending...

2009-07-01

500