881 |
The effects on the performance of broilers consuming calcium, potassium, and sodium nitrates and nitrites from the drinking waterReeder, Julie A. 10 May 1996 (has links)
Four experiments were carried out with broiler chicks from day-old to three or
four weeks of age to assess the effects of nitrates and nitrites from calcium,
potassium, and sodium salts in the drinking water of broilers on growth, body
weights, feed utilization, blood chemistries, liver tissues, and lipid oxidation of breast
and thigh tissues. Body weights were lower (P<.05) among chicks consuming
calcium nitrate than those of chicks consuming sodium nitrate or the control. Chicks
consuming calcium nitrate (Ca(NO���)���) at 1000 ppm had lower (P<.05) body weights
than those drinking Ca(NO���)��� at 0, 50, or 200 ppm. Broilers receiving 1000 ppm of
calcium nitrite (Ca(NO���)���) had depressed body weights when compared to chicks
consuming 0, 50, or 200 ppm of Ca(NO���)���. Consumption of sodium nitrate (NaNO���)
at 2033 ppm reduced (P<.05) broiler weights in comparison to broilers ingesting 0,
111, or 427 ppm of NaNO���. Feed utilization was less efficient (P<.05) by chicks
ingesting Ca(NO���)��� and calcium, potassium, or sodium salts of nitrite when compared
with the control. / Graduation date: 1996
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882 |
The effects of nutrition on the zinc sensitivity of Mysidopsis intiiVance, Paul Mitchell 21 April 1995 (has links)
A static-renewal, seven day test was developed and
utilized to study the effects of nutrition on the sensitivity
of Mysidopsis intii Holmquist to zinc. It was found that
juvenile growth was the most reliable and sensitive endpoint
that could also reflect the subtle effects of low zinc
concentrations and diet modifications. It was shown that even
slight diet modifications could significantly alter growth
over seven days. It was also shown that this small change in
overall growth was accompanied by a heightened sensitivity to
zinc. This heightened sensitivity was evident as a lowering
of the Lowest Observed Effect Concentration of zinc in diets
that suppressed growth. Though this shift in response to a
toxicant is subject to variability, the fact that it was
observed should make researchers and regulators aware of the
potential significance of dietary influences on bioassays of
pollutants. / Graduation date: 1995
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883 |
Genetic analysis of vernalization, photoperiod, and winter hardiness in barley (Hordeum vulgare L.)Pan, Aihong 15 February 1994 (has links)
Graduation date: 1994
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884 |
Improvement of surface properties induced by specific functionalization of polyethyleneIguerb, Ourida 13 July 2006 (has links)
In a first step, the surfaces of polyethylene films have been modified by grafting urethane monoacrylate monomer under UV irradiation in ambient air. For native films, this grafting was successfully realized but the grafted surface was heterogeneous. To overcome this drawback and obtain a smooth and homogeneous coating, a wet oxidation method using sodium hypochlorite through two different processes was developed. The oxidation mechanism of the PE films has been established. As a consequence of the oxidation, the wettability of the grafted films was strongly increased as measured by sessile drop technique and Wilhelmy plate method. The hydrophilicity is due to carbonyl and carboxylic groups created on the treated surface. Grafting of several formulations containing different amounts of monomer, carrier and photosensitizer was successfully evidenced by analyzing the residues obtained from PE extraction in hot toluene. Indeed, FTIR, XPS, DSC and elementary analysis showed that the polyacrylate was effectively grafted on PE pre-oxidized films. Moreover, the obtained grafted surfaces corresponding to important oxidation time were homogeneous as shown by SEM and AFM. In a second step, acrylate grafting was used to induce specific properties onto the surface. This study was focused on antibacterial effect. The process starts by a dissolution of poly(4-vinylbenzyl chloride) (PVBC) in the urethane monoacrylate monomer followed by photopolymerisation of the latter. Anchoring of different PVBC based formulations was confirmed by FTIR analysis, performed onto obtained residues after extraction in hot toluene and dichloromethane. In a last step, the grafted coatings were quaternized by using triethylamine in N, N-dimethyl formamide by a nucleophilic displacement reaction. Antibacterial effect of the quaternized samples was measured by Kirby Bauer method.
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885 |
Experimental and computational investigation of Jahn-Teller active and other moleculesSioutis, Ilias, January 2006 (has links)
Thesis (Ph. D.)--Ohio State University, 2006. / Title from first page of PDF file. Includes bibliographical references (p. 272-280).
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886 |
Submicron and nanoscale organic field-effect transistors and circuitsJung, Tae Ho, January 1900 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.
|
887 |
Physicochemical and microbiological characteristics of surimi seafood under thermal and E-beam processingJaczynski, Jacek 18 March 2002 (has links)
Effects of thermal and electron beam (e-beam) processing on microbial
inactivation and physichochemical properties of surimi and surimi seafood were
investigated. Thermal-death-time (TDT) concept was used to model
Staphylococcus aureus inactivation by heat and e-beam. Gurney-Lurie charts were
used to estimate temperature during thermal processing of surimi seafood. Dose
mapping technique was used to estimate dose absorbed by surmi seafood during e-beam
processing. The dose absorbed increased up to 2 cm and then it gradually
decreased, reaching a minimum at 5 cm depth of surimi seafood. It was determined
that one and two-sided e-beam can efficiently penetrate 3.3 and 8.2 cm of surimi
seafood, respectively. The D-value for thermally inactivated S. aureus was 0.65,
1.53, 6.52, 49.83, and 971.54 s, at 95, 85, 75, 65, and 55°C, respectively. The D-value
for S. aureus inactivated with e-beam was 0.34 kGy. The z-value for
thermally inactivated S. aureus between 55-95°C was not linear. Thermal
processing degraded texture and color of surimi seafood. E-beam enhanced
firmness and decreased the b* value of surimi seafood. Myosin heavy chain
(MHC) degraded proportionally to the e-beam dose. Actin was not affected by e-beam
except treatment at 25 kGy. Hydrophobic interactions and disulfide bonds
were formed in raw Alaska pollock surimi when treated with e-beam. / Graduation date: 2002
|
888 |
Applications of carbon nanotubes on integrated circuits /Zhang, Min. January 2006 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references. Also available in electronic version.
|
889 |
Improvement of surface properties induced by specific functionalization of polyethyleneIguerb, Ourida 13 July 2006 (has links)
In a first step, the surfaces of polyethylene films have been modified by grafting urethane monoacrylate monomer under UV irradiation in ambient air. For native films, this grafting was successfully realized but the grafted surface was heterogeneous. To overcome this drawback and obtain a smooth and homogeneous coating, a wet oxidation method using sodium hypochlorite through two different processes was developed. The oxidation mechanism of the PE films has been established. As a consequence of the oxidation, the wettability of the grafted films was strongly increased as measured by sessile drop technique and Wilhelmy plate method. The hydrophilicity is due to carbonyl and carboxylic groups created on the treated surface. Grafting of several formulations containing different amounts of monomer, carrier and photosensitizer was successfully evidenced by analyzing the residues obtained from PE extraction in hot toluene. Indeed, FTIR, XPS, DSC and elementary analysis showed that the polyacrylate was effectively grafted on PE pre-oxidized films. Moreover, the obtained grafted surfaces corresponding to important oxidation time were homogeneous as shown by SEM and AFM. In a second step, acrylate grafting was used to induce specific properties onto the surface. This study was focused on antibacterial effect. The process starts by a dissolution of poly(4-vinylbenzyl chloride) (PVBC) in the urethane monoacrylate monomer followed by photopolymerisation of the latter. Anchoring of different PVBC based formulations was confirmed by FTIR analysis, performed onto obtained residues after extraction in hot toluene and dichloromethane. In a last step, the grafted coatings were quaternized by using triethylamine in N, N-dimethyl formamide by a nucleophilic displacement reaction. Antibacterial effect of the quaternized samples was measured by Kirby Bauer method.
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890 |
noneTu, Yu-lin 04 August 2007 (has links)
Taiwan¡¦s economy is a typical island economy. Its charactericts includes lack of natural resources and relying on international trade. Attending trade show is an important international marketing activity for Taiwanese companiese. Since trade show is important and its cost is not low, how to evaluate its cost-effect becomes a critical issue. To evaluate cost-effect of attending a trade show, we observed pre-show, at-show, and after-show activies of a company and evaluate its trade show cost-effect.
The company¡¦s pre-show activities includes informing its customers and potential customers of the trade show. At-show activities include introducing its company and products and increasing its visitors¡¦ awareness. After-show activities include the follow up after the trade show. After using six methods to evaluate trade show cost-effect, we suggest the company should train its resperantives to identify real potential buyers. In addition, the marketing plan of year (or years) and the goals of trade show should be set. In that case, it could improve its cost-effect. If the company could evaluate and review all the trade shows attended, it could improve its cost-effect further.
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