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Home > Green Synthesis Cu@Tio2 Nano-Particles Using Cedrus Deorara Leave Extract and Their Multifunctional Properties: Mphil Physics

Green Synthesis Cu@Tio2 Nano-Particles Using Cedrus Deorara Leave Extract and Their Multifunctional Properties: Mphil Physics

Thesis Info

Author

Muhammad Rizwan

Supervisor

Surayya Mukhtar

Department

Department of Physics

Institute

Allama Iqbal Open University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Page

86p.

Subject

Physics

Language

English

Other

Classification: 660 RAG

Added

2022-07-09 15:11:20

Modified

2023-01-06 19:20:37

ARI ID

1676729776745

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راستوں نے کیا آج مجھ پر عیاں

راستوں نے کیا آج مجھ پر عیاں
فہدؔ رکتے نہیں منزلِ شوق میں

EFFECTIVENESS OF COMMUNITY SCHOOL NETWORKING FOR CHILDREN WITH AUTISM: PERSPECTIVES OF TEACHERS AND SCHOOL ADMINISTRATORS

Objective: In order to provide equal educational opportunities, community school networking is an emerging trend to facilitate inclusion of children with mild-moderate Autism. This quantitative research aims to investigate the effectiveness of community networking for children with Autism from Pakistani lower socio-economic stratum of society. Study Design: Qualitative Research Design Study Settings and Participants: Six mild-moderate autistic children were enrolled in three mainstreams schools and a liaison between these schools, and a rehabilitation center located in the same area was created to facilitate inclusion. The researchers interviewed six teachers from mainstream schools, three school administrators and one administrator of rehabilitation regarding the effectiveness of community school networking for children with Autism after eight months of this collaboration. Data Collection Tool: Data were obtained through semi-structured interviews Results: All participating administrators and teachers underscored the changes in social and behavioral patterns of autistic children which included an imitation of positive behaviors from peers, acceptance, and awareness as strengths of community school networking model. However, major challenges faced were unacceptability from parents of normal children, learning differences, curriculum modifications, time constraints and dependency on the resource teacher. The administrators and teachers recommended that creating awareness programs for parents of normal children, curriculum modifications and in-house psychologists can further facilitate inclusion of children with disabilities. Conclusion: It was concluded that community school networking model can assist inclusive education and encourage engagement for all children, including those who are autistic.

Taxonomic, Phytochemical and Biological Screening of Some Selected Medicinal Plants of Lesser Himalaya Pakistan

Medicinal use of plants is as old as the history of mankind. Medicinal plants have the ability to produce valuable classes of compounds with interesting bioactivities. Due to increasing side effects of synthetic drugs, use of medicinal plants is increasing day by day. Pakistan has about 6000 species of higher plants, of which about 700 species are commonly used for medicinal purposes. Taxonomic, Phytochemical and Biological Screening of Some Selected Medicinal Plants of Lesser Himalaya Pakistan was carried out to determine the accurate taxonomic description, complete phytochemical profile and bioactivity of selected medicinal plants. Four medicinal plants, Spermadictyon suaveolens, Reinwardtia indica, Xylosma longifolium and Celtis eriocarpa were selected based upon ethnomedicinal importance and their least phytochemical exploration. Selected plants were analyzed for taxonomic evaluation, qualitative and quantitative phytochemical screening, proximate analysis, biological activities and LC-MS profiling. R. indica was also analyzed for isolation of phytochemicals. Selected plants were extracted with cold maceration and fractionated in n-Hexane fraction (HF), chloroform fraction (CF), ethyl acetate fraction (EF) and aqueous fraction (AF). Preliminary phytochemical tests revealed the presence of high amount of phenolics and flavonoids in all four plants. R. indica contains high amount of phenolic, flavonoid, tannin, terpenoids and low amounts of alkaloids and saponins. C. eriocarpa contains high amount of phenolic, flavonoid, tannin and terpenoids, while low amount of saponins. S. suaveolens contains high amount of phenolics, flavonoids and tannins. X. 1 2 longifolium contains high amount of phenolics, flavonoids, alkaloids and tannins, while low amount of terpenoids and saponins. Proximate analysis revealed that X. longifolium contains high amount of dry matter (90.30±0.14), low moisture content (9.70±0.14), high fiber, carbohydrates and nutritive values (353.66±0.70). R. indica and X. longifolium showed higher total phenolic contents. High total flavonoid content was found in crude methanolic extract (65.90±1.00) and ethyl acetate fraction (88.01±1.33) of R. indica. Total flavonoid content is also higher in chloroform (74.81±1.58) and ethyl acetate fraction (79.84±0.80) of X. longifolium. R. indica showed higher antioxidant, cytotoxic and antitumor activities in crude methanolic extract, chloroform and ethyl acetate fractions. The highest DPPH EC50 value was exhibited by ethyl acetate fraction (119.64±0.58) followed by crude methanolic extract (209.00±1.53). Chloroform fraction of R. indica also showed higher antitumor IC50 (255.90±0.97), followed by ethyl acetate fraction (297.663±0.91). C. eriocarpa showed higher antioxidant (324.81±2.60), cytotoxic (243.61±1.24) and antitumor (372.76.±0.34) activities only in ethyl acetate fraction. S. suaveolens revealed higher antioxidant activity in ethyl acetate fraction (149.15±0.59) followed by Chloroform fraction (208.13±1.78). X. longifolium showed higher antioxidant activity in crude methanolic extract (107.21±0.16) followed by ethyl acetate fraction (152.96±0.43) and chloroform fraction (187.95±0.26). X. longifolium also showed high cytotoxic and antitumor activity in EF (484.19±1.55 and 235.41±1.51 respectively). UHPLC-DAD-ESI-MS profiling yielded identification of 58 compounds in R. indica, 48 compounds in C. eriocarpa, 50 compounds in S. suaveolens and 60 compounds in X. longifolium. LC-MS profile and bioactivity revealed that bioactivity 3 of R. indica extracts is mainly due to phenolic acids and flavones derivates, C. eriocarpa is due to flavones derivatives, S. suaveolens is due to phenolic acids, Quercetin and luteolin derivatives, while X. longifolium is due to Quercetin, naringenin and apigenin derivatives. UHPLC-MS profile also revealed that S. suaveolens and X. longifolium are rich in Quercetin derivatives. Based upon promising results of bioactivities of R. indica it was selected for compound isolation. Two compounds, Diferuloyl sinapic acid and Esculin were isolated for the first time from R. indica. The present research was very helpful in determining the underlying phytochemical profile and bioactivity correlation of selected medicinal plants.