Preparation, characterization, and agricultural utilization of urea loaded chitosan and nanoparticles (Record no. 7298)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02267nam a22002417a 4500 |
| 001 - CONTROL NUMBER | |
| control field | 61939811 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | CHED |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20240430093258.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 200114t xxu||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | CHED |
| Transcribing agency | CHED |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | LG 995 2017 C6 L37 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Lapoot, Lloyd Mamalis |
| 245 ## - TITLE STATEMENT | |
| Title | Preparation, characterization, and agricultural utilization of urea loaded chitosan and nanoparticles |
| Statement of responsibility, etc. | Lloyd Mamalis Lapoot |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Los Ba�os, Laguna |
| Name of publisher, distributor, etc. | University of the Philippines Los Ba�os |
| Date of publication, distribution, etc. | 2017 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | xii, 64 pages |
| Accompanying material | with CD ROM |
| Type of unit | Thesis |
| 500 ## - GENERAL NOTE | |
| General note | Thesis (Master of Science in Agricultural Chemistry) -- University of the Philippines Los Ba�os, June 2017 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Urea-loaded chitosan nanoparticles were prepared by copolymerization of methacrylic acid with chitosan followed by the incorporation of urea into the nanoparticles. The shape of the nanoparticles is spherical as shown by the transmission electron microscopy (TEM) image. Particle size analysis revealed that the sizes of nanoparticles can change from 73.3 nm to 126 nm depending on the amount of chitosan used in the synthesis. The formation of the nanoparticles improved the stability of chitosan as shown by the differential scanning calorimetry (DSC) result. The loading efficiency of urea in the nanoparticles is 96.8+- 0.4%. The presence of urea resulted to an increase in size of the nanoparticles, presence of additional peaks in the FT-IR spectra of the CS-PMAA nanoparticles and an increase in the presence in the atomic concentration of nitrogen by 166% as revealed by the SEM-EDX result. The urea-loaded chitosan nanoparticle was tested as a foliar fertilizer for pechay (Brassica rapa cultivar Pavito) and lettuce (Lactuca sativa cultivar Estrosa). Analysis of variance for the growth parameters measured revealed that although foliar treatments of urea-loaded chitosan nanoparticle gave means higher compared to treatments containing commercial urea and the control, the difference were found to be not significant. Analysis of variance of the total nitrogen content also showed no significant among treatments. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Chitosan. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Nanoparticles. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Urea as fertilizers. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Library of Congress Classification |
| Koha item type | CHED Funded Research |
| Withdrawn status | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection | Home library | Current library | Shelving location | Date acquired | Source of acquisition | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type | Public note |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Library of Congress Classification | Thesis and Dissertation | Commission on Higher Education | Commission on Higher Education | CHED Funded research | University of the Philippines Los Ba�os | LG 995 2017 C6 L37 | CHEDFR-000012 | 04/29/2024 | 1 copy | 04/29/2024 | CHED Funded Research | copy 1 |