1,721,081 research outputs found
Effects of Different Levels of Selenium Supplements on Growth Performance and Immune Response of Broiler Chicken in Hot Humid Climatic Condition
Full text linkA Thesis
Submitted to Department of Animal Nutrition, Genetics and Breeding,
Sher-e-Bangla Agricultural University, Dhaka-1207
in partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE (MS) IN ANIMAL NUTRITIONA total of 120 day-old Cobb 500 broiler chicks were reared in Sher-e-Bangla
Agricultural University Poultry Farm, Dhaka. The present study was designed to
evaluate the growth performance and immune response of commercial broiler chicks
fed diet containing Selenium Powder in hot humid climatic condition. Chicks were
divided randomly into 4 experimental groups of 3 replicates (10 chicks with each
replications). One of the 4 experimental group was fed diet as control while, the
remaining three groups were fed diet with 3 levels of Se (0.1g Se/kg feed, 0.3g Se/kg
feed and 0.5g Se/kg feed). The results showed that average live weight and live weight
gain was significant (P<0.05) in comparison to others. Though best live weight and live
weight gain was found at 0.5g/kg Se concentration but it was very close with control
group. The feed consumption and FCR were not influence significantly by the dietary
inclusion of Se as compared to control group. The highest FCR was in 0.1g Se/Kg feed
and lowest was in control. However, a linear increase in feed consumption has found
with the increase in Se concentration in the diet. Birds fed 0.5g Se/kg feed diets
achieved superior feed consumption compared to those of the control group. The
relative weight of carcass parts, giblet organ and dressing percent of different groups
showed that there was significant (P<0.05) difference between the groups. The superior
dressing percentage and carcass parts were found in 0.3g Se/kg feed concentration. In
addition, the present study showed that feeding dietary Se had no significant (P>0.05)
effects on survivability and uniformity among the treatments though there was no
mortality in treatments group. The results of hematological studies as well as immune
response showed no significant (P>0.05) differences due to supplementation of Se.
Analyzing the above findings it can be concluded that Selenium don’t hamper growth
performance and immunity of broiler therefore it can be use with feed for human health
benefit. Because the residual Selenium has a positive impact on human health as
Selenium is an essential micronutrient for huma
Ensure better governance for safe migration
No full textThe writer is a Research Faculty at the BRAC Institute of Governance and Development (BIGD), BRAC University
Mechanisms of Invasion and Dominance of Two Herbaceous Lianas in the Floodplain of a Regulated River
Full text link学位記号番号 : 博理工甲第806号博士の専攻分野の名称 : 博士(学術)
学位授与年月日 : 平成22年9月17日textapplication/pd
Data and Code of A3SbI3
No full text<p>We have used the Quantum Espresso software in Linux operating system for running all the code.<br>1. By making a psedo file with the pseudopotential of Ba/Sr/Ca, Sb, and I.</p>
<p>2. Then we have coded the codes in appropriate manner.</p>
<p>3. Then we have run the scf file by using the command: pw.x<Ba3SbI3.scf.in/Sr3SbI3.scf.in/Ca3SbI3.scf.in>BaSbI3.scf.out/Sr3SbI3.scf.out/Ca3SbI3.scf.out<br>4. Then we have run the nscf file by using the command: pw.x<Ba3SbI3.nscf.in/Sr3SbI3.nscf.in/Ca3SbI3.nscf.in>BaSbI3.nscf.out/Sr3SbI3.nscf.out/Ca3SbI3.nscf.out<br>5. Then we have run the bands file by using the command: bands.x<Ba3SbI3.bands.in/Sr3SbI3.bnads.in/Ca3SbI3.bands.in>BaSbI3.bands.out/Sr3SbI3.bands.out/Ca3SbI3.bands.out and using plotband.x plot the bands fig in xmgrace.<br>6. Then we have run the pdos file by using the command: projwfc.x<Ba3SbI3.pdos.in/Sr3SbI3.pdos.in/Ca3SbI3.pdos.in>BaSbI3.pdos.out/Sr3SbI3.pdos.out/Ca3SbI3.pdos.out<br>7. Then we have run the eps file by using the command: epsilon.x<Ba3SbI3.eps.in/Sr3SbI3.eps.in/Ca3SbI3.eps.in>BaSbI3.eps.out/Sr3SbI3.eps.out/Ca3SbI3.eps.out</p>
<p>After that we have get the values from SCAPS-1D software and plot the given the data on this file using Origin Pro 2018 software.</p>
Data and Code of RbSnX3
No full text<p>We have used the Quantum Espresso software in Linux operating system to running all the code.<br>1. By making a psedo file with the pseudopotentials of Rb, Sn, and I/Br/Cl.</p>
<p>2. Then we have coded the codes in appropriate manner.</p>
<p>3. Then we have run the scf file by using the command: pw.x<RbSnI3.scf.in/RbSnBr3.scf.in/RbSnCl3.scf.in>RbSnI3.scf.out/RbSnBr3.scf.out/RbSnCl3.scf.out</p>
<p>4. Then we have run the nscf file by using the command: pw.x<RbSnI3.nscf.in/RbSnBr3.nscf.in/RbSnCl3.nscf.in>RbSnI3.nscf.out/RbSnBr3.nscf.out/RbSnCl3.nscf.out</p>
<p>5. Then we have run the bands file by using the command: bands.x<RbSnI3.bands.in/RbSnBr3.bnads.in/RbSnCl3.bands.in>RbSnI3.bands.out/RbSnBr3.bands.out/RbSnCl3.bands.out and using plotband.x to plot the bands fig in xmgrace.</p>
<p>6. Then we have run the pdos file by using the command: projwfc.x<RbSnI3.pdos.in/RbSnBr3.pdos.in/RbSnCl3.pdos.in>RbSnI3.pdos.out/RbSnBr3.pdos.out/RbSnCl3.pdos.out</p>
<p>7. Then we have run the eps file by using the command: epsilon.x<RbSnI3.eps.in/RbSnBr3.eps.in/RbSnCl3.eps.in>RbSnI3.eps.out/RbSnBr3.eps.out/RbSnCl3.eps.out</p>
<p>After that, we have to get the values from SCAPS-1D software and plot the given data on this file using Origin Pro 2018 software.</p>
Synthesis, characterisation and water purification properties of carbon nanotube membranes (buckypapers)
No full textSeveral different series of novel, self-supporting carbon nanotube (CNT) membranes, known as buckypapers (BPs), were successfully synthesised by vacuum filtration of dispersions containing multi-walled carbon nanotubes (MWNTs), functionalised MWNTs (MWNT‒COOH and MWNT‒NH2), or single-walled carbon nanotubes (SWNTs). The formation of these dispersions was achieved by subjecting samples containing CNTs and various dispersant molecules, including a surfactant (Triton X-100 (Trix)), macrocyclic ligands (meso-tetra(4-sulfonatophenyl) porphyrin dihydrogen chloride, phthalocyanine tetrasulfonic acid or 4-Sulfonic calix[6]arene hydrate), and biopolymers (bovine serum albumin, lysozyme, chitosan, gellan gum and DNA) to ultrasonic energy. Absorption spectrophotometry and optical microscopy was used to monitor the formation of the dispersions, and determine the optimum sonication time for their formation. Microanalytical data obtained from the MWNT and SWNT BPs confirmed the retention of significant amounts of the various dispersant molecules within their structures. The electrical conductivities of the MWNT and substituted MWNT BPs varied between 24 ± 16 and 58 ± 11 S cm‒1, while the SWNT/gellan gum and SWNT/chitosan BPs exhibited the highest electrical conductivities observed (68 ± 4 and 75 ± 6 S cm‒1, respectively). All MWNT and functionalised MWNT BPs possessed hydrophilic surfaces, with contact angles ranging from 28 ± 2 to 57 ± 5°. In contrast, the SWNT BPs possessed less hydrophilic surfaces (contact angles = 63 ± 7 to 88 ± 3°). Measurement of the mechanical properties of MWNT BPs prepared using Trix or one of the macrocyclic ligand dispersants showed that their tensile strengths varied between 1.6 ± 0.7 and 13 ± 2 MPa. In contrast, tensile test measurements performed on MWNT or SWNT BPs containing biopolymers revealed that they were typically much tougher materials, as reflected in tensile strengths between 12 ± 2 and 81 ± 14 MPa
Carbon Nanotube Membranes: Synthesis, Properties, and Future Filtration Applications
No full textOver the course of the past decade, there has been growing interest in the development of different types of membranes composed of carbon nanotubes (CNTs), including buckypapers and composite materials, for an ever-widening range of filtration applications. This article provides an overview of how different types of CNT membranes are prepared and the results obtained from investigations into their suitability for different applications. The latter involve the removal of small particles from air samples, the filtration of aqueous solutions containing organic compounds and/or bacteria, and the separation of individual liquids present in mixtures. A growing number of reports have demonstrated that the incorporation of CNTs into composite membranes confers an improved resistance to fouling caused by biomacromolecules and bacteria. These results are discussed, along with evidence that demonstrates it is possible to further reduce fouling by taking advantage of the inherent conductivity of composite membranes containing CNTs, as well as by using different types of electrochemical stimuli
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