Search Results - (Author, Cooperation:W. H. Smith)

2014-10-04

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

1750-3841

Blackwell Publishing Journal Backfiles 1879-2005

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Process Engineering, Biotechnology, Nutrition Technology

Electronic Resource

1750-3841

Blackwell Publishing Journal Backfiles 1879-2005

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Process Engineering, Biotechnology, Nutrition Technology

Electronic Resource

1476-4687

Nature Archives 1869 - 2009

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

[Auszug] The threshold concentration of ethylene which will produce a significant reduction of life of the cut carnation bloom has not been determined. A concentration of 0-05-0-07 p.p.m. was, however, chosen as one which may occur under conditions of normal handling of cut flowers2, and is also within the ...

Electronic Resource

1434-6052

Springer Online Journal Archives 1860-2000

Physics

Abstract The rate of neutrino- and antineutrino-induced prompt same-sign dimuon production in steel was measured using a sample of μ−μ− events and 25 μ+μ+ events withP μ〉9 GeV/c, produced in 1.5 millionv μ and 0.3 million $$\overline {v_\mu }$$ induced charged-current events with energies between 30 GeV and 600 GeV. The data were obtained with the Chicago-Columbia-Fermilab-Rochester (CCFR) neutrino detector in the Fermilab Tevatron Quadrupole Triplet Neutrino Beam during experiments E 744 and E 770. After background subtraction, the prompt rate of same-sign dimuon production is (0.53±0.24)×10−4 perv μ charged-current event and (0.52±0.33)×10−4 per $$\overline {v_\mu }$$ charged-current event. The kinematic distributions of the same-sign dimuon events after background subtraction are consistent with those of the non-prompt background due to meson decays in the hadron shower of a charged-current event. Calculations ofc $$\bar c$$ gluon bremsstrahlung, based on improved measurements of the charm mass parameter and nucleon structure functions by the CCFR collaboration, yield a prompt rate of (0.09±0.39)×10−4 perv μ charged-current event. In this case,c $$\bar c$$ gluon bremsstrahlung is probably not an observable source of prompt same-sign dimuons.

Electronic Resource

1570-7458

induced plant response ; Cruciferae ; secondary plant metabolites ; glucosinolates ; oviposition stimuli ; semiochemicals

Springer Online Journal Archives 1860-2000

Biology

Electronic Resource

1476-4687

Nature Archives 1869 - 2009

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

[Auszug] Fig. 1. The effect of time x temperature and ethylene in diminishing the vase-life of carnations, x , 60* F (15-6 C); o, 50 F (10-0 C); A, 40 F (4-4 C); Q, 35 F (1-7 C) The results of experiments in which carnation blooms were kept at different temperatures for various periods of time, in the ...

Electronic Resource

1476-4687

Nature Archives 1869 - 2009

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

[Auszug] The extent to which mechanical damage during packing and transport contributes to this production of ethylene is not known. Several workers have shown that damage to plant tissues is instrumental in raising the rate of production of ethylene, and that fungal attack will stimulate ethylene ...

Electronic Resource

1434-6052

Springer Online Journal Archives 1860-2000

Physics

Abstract Structure functions obtained from high energy neutrino and antineutrino scattering from an iron target are presented. These were extracted from the combined data of Fermilab experiments E616 and E701; these utilized narrow band beam runs between 1979–1982. The structure functions are used to test the validity of quarkparton model (QPM) predictions and to extract the QCD scale parameter Λ from fits to the Altarelli-Parisi equations.

Electronic Resource

1573-5036

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Summary Slash pine seedlings on Bladen, Leon, and Lakeland soils responded differently to P and N fertilization. Seedling growth was increased by all treatments on Bladen soil, whereas responses by seedlings on the other soils were nil. All soils were low in extractable P with both Bladen and Lakeland yielding 0.85 ppm P. Growth response to fertilizer was positive on Bladen soil because soil and tissue levels of P were raised above “critical” levels and other nutrients were present in adequate quantities. Tissue analyses indicated, and subsequent experiments utilizing macro- and micronutrients proved, that excess P applications reduced certain micronutrients to growth-limiting levels on both Leon and Lakeland soils. Best growth on Leon soil occurred when P and N were supplemented with Cu. On the Lakeland soil macronutrients supplemented with Cu, Mn, or Zn produced greatest growth. Toxicity levels of five micronutrients on the latter soil also were determined.

Electronic Resource

1573-5036

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Summary Slash pine seedlings on Bladen, Leon, and Lakeland soils responded differently to P and N fertilization. Seedling growth was increased by all treatments on Bladen soil, whereas responses by seedlings on the other soils were nil. All soils were low in extractable P with both Bladen and Lakeland yielding 0.85 ppm P. Growth response to fertilizer was positive on Bladen soil because soil and tissue levels of P were raised above “critical” levels and other nutrients were present in adequate quantities. Tissue analyses indicated, and subsequent experiments utilizing macro- and micronutrients proved, that excess P applications reduced certain micronutrients to growth-limiting levels on both Leon and Lakeland soils. Best growth on Leon soil occurred when P and N were supplemented with Cu. On the Lakeland soil macronutrients supplemented with Cu, Mn, or Zn produced greatest growth. Toxicity levels of five micronutrients on the latter soil also were determined.

Electronic Resource

1573-5060

Fragaria moschata ; Potentilla fruticosa ; intergeneric hybrids ; embryo culture ; parthenogenesis ; aneuploidy ; polyploidy ; chromosome elimination ; genetic variation

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Summary Crosses between Fragaria moschata (2n=42) and Potentilla fruticosa (2n=14) produced many seeds; about half of these germinated, but only nine plants were obtained from 554 seedlings. Five plants died without flowering, and four were vigorous but sterile. Four plants had the expected chromosome number (2n=28), one plant had 21 chromosomes, and four were aneuploid with 23, 24, 25 and 27 chromosomes respectively. Response to growth substances giving elongated stem internodes and swollen but not succulent receptacles provided evidence that two of the plant were hybrids. It is suggested that all nine plants originated from a normal fertilisation which was followed in some cases by chromosome elimination at an early stage of embryo development.

Electronic Resource

1573-5060

Fragaria ; Potentilla ; intergeneric hybrids ; pollen storage ; temperature ; relative humidity

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Summary Low temperature and humidity were used for the storage of pollen of four species of Fragaria (2n=14, 42 and 56) and two species of Potentilla (2n=14). The stainability of Fragaria pollen was assessed over a number of years by use of aceto-carmine stain and its viability by cross-pollinations; stainability of Potentilla pollen was assessed by acetocarmine. Fragaria pollen so stored remained stainable for seven years and showed the ability to set seed for three years. over the latter period, aceto-carmine staining gave a reasonable prediction of seed set produced by the stored pollen of Fragaria and so is of value in estimating pollen viability in that genus. Potentilla pollen remained stainable for three years.

Electronic Resource

1573-5036

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Electronic Resource

1573-5060

Eragaria moschata ; Potentilla fruticosa ; intergeneric hybrids ; backcrossing ; embryo culture ; parthenogenesis ; ancuploidy ; polyploidy ; unreduced gametes

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Summary An aneuploid hybrid (2n=23) of Fragaria moschata (2n=42) and Potentilla fruticosa (2n=14) was backcrossed with pollen of both parents, separately and combined in a pollen mixture. Seven vigorous progeny were obtained. The origin of the exeptional chromosome numbers, 2n=44, 49, 63, 63, 65, 67, 67, is discussed, and it is shown that each of the numbers could be produced by the fertilisation of unreduced and double unreduced gametes of the hybrid by normally reduced gametes of one of the parental species.

Electronic Resource

1434-6052

Springer Online Journal Archives 1860-2000

Physics

Abstract This paper reports on measurements of the total cross section for the inclusive reaction vμ+N , as a function of incident energy. Neutrinos and antineutrinos with energy in the range 30–300 GeV were produced in the 1982 Fermilab narrow-band neutrino beamline. A total of 35 000 neutrino and 7000 antineutrino interactions were recorded in the CCFR detector located in LabE. The incident neutrino flux was determined by methods similar to those used in previous experiments. The rate of increase with energy of the total cross section (σ/E v) in the range 30 to 75 GeV was determined to be 0.659±0.005(stat)±0.039(syst)×10−38 cm2/GeV and 0.307±0.008(stat)±0.020(syst)×10−38 cm2/GeV for incident neutrinos and antineutrinos, respectively. The 5.9% systematic errors are due primarily to uncertainties in the flux intensity measurement. The energy dependence of the cross section in the regionE ν=100–300 GeV was found to be linear, as determined by relative normalization techniques. A weighted average of our previous and present measurement for the total ν-N cross section yields: $$\begin{gathered} \sigma (vN) = 0.666 \pm 0.020(statistical \hfill \\ + systematic)E_v 10^{ - 38} cm^2 ; \hfill \\ \sigma (\bar vN) = 0.324 \pm 0.014(statistical \hfill \\ + systematic)E_v 10^{ - 38} cm^2 ; \hfill \\ \end{gathered} $$ .

Electronic Resource

1434-6052

Springer Online Journal Archives 1860-2000

Physics

Abstract A search for inclusive muon-neutrino (v µ) and muon-antineutrino $$(\bar v_\mu )$$ oscillations has been performed in the Fermilab narrow band neutrino beam using two detectors running simultanously at two distances from the neutrino source. The data show no evidence for either neutrino or antineutrino oscillations and rule out oscillations ofv µ or $$\bar v_\mu $$ into any other single type of neutrino for 15〈Δm 2〈1,000 eV2/c4 and sin2(2θ)〉0.02–0.40.

Electronic Resource

1434-6052

Springer Online Journal Archives 1860-2000

Physics

Abstract We report a measurement of the electroweak parameters sin2θ w and ϱ based on the ratios of neutral current to charged current events measured in the Fermilab narrow-band neutrino beam at energies of 30–240 GeV. The data are fully corrected for radiative effects, heavy-quark production, and other effects. The best value for sin2θ w obtained, sin2θ w =0.239±0.011, is consistent with the most recent values fromW andZ production, as well as from other neutrino experiments.

Electronic Resource

1434-6052

Springer Online Journal Archives 1860-2000

Physics

Abstract Neutrino interactions with two muons in the final state have been studied using the Fermilab narrow band beam. A sample of 18v μ like sign dimuon events withP μ〉9 GeV/c yields 6.6±4.8 events after backgroud subtraction and a prompt rate of (1.0±0.7)×10−4 per single muon event. The kinematics of these events are compared with those of the non-prompt sources. A total of 437v μ and 31 $$\bar v_\mu $$ opposite sign dimuon events withP μ〉4.3 GeV/c are used to measure the strange quark content of the nucleon: $$\kappa = {{2s} \mathord{\left/ {\vphantom {{2s} {\left( {\bar u + \bar d} \right) = 0.52_{ - 0.15}^{ + 0.17} \left( {or\eta _s \frac{{2s}}{{u + d}} = 0.075 \pm 0.019} \right) for 100〈 E_v〈 230 GeV\left( {\left\langle {Q^2 } \right\rangle = {{23 GeV^2 } \mathord{\left/ {\vphantom {{23 GeV^2 } {c^2 }}} \right. \kern-\nulldelimiterspace} {c^2 }}} \right)}}} \right. \kern-\nulldelimiterspace} {\left( {\bar u + \bar d} \right) = 0.52_{ - 0.15}^{ + 0.17} \left( {or\eta _s \frac{{2s}}{{u + d}} = 0.075 \pm 0.019} \right) for 100〈 E_v〈 230 GeV\left( {\left\langle {Q^2 } \right\rangle = {{23 GeV^2 } \mathord{\left/ {\vphantom {{23 GeV^2 } {c^2 }}} \right. \kern-\nulldelimiterspace} {c^2 }}} \right)}}$$ using a charm semileptonic branching ratio of (10.9±1.4)% extracted from measurements ine + e − collisions and neutrino emulsion data.

Electronic Resource

0001-1541

Chemistry ; Chemical Engineering

Wiley InterScience Backfile Collection 1832-2000

Chemistry and Pharmacology

Process Engineering, Biotechnology, Nutrition Technology

A static vapor pressure apparatus is described which is especially suitable for mixtures. A vapor pressure flask with a built-in condenser allows the mixture to be degassed without change in composition. The entire apparatus is assembled from simple parts. Equilibrium is rapidly attained with either an external pressure or a liquid of known vapor pressure used as a reference.

5 Ill.

Electronic Resource