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Synthesis and characterization of tin oxide and graphene oxide nanoparticles and their composition by sol gel technique

Thesis Info

Author

Muneeza Rabil

Supervisor

Shumaila Sajjad

Department

Department of Physics

Program

MSc

Institute

International Islamic University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Page

xii, 43

Subject

MSc

Language

English

Other

MA/MSC 620.5 MUS

Added

2021-02-17 19:49:13

Modified

2023-01-06 19:20:37

ARI ID

1676724039154

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ابوالکلام آزاد کے افکار عصری تناظر میں: (1958ء 1886ء)

آپ نے قلمی جد و جہد میں بھر پور کردار ادا کیا۔ آپ ایسے مجاہد تھے جس کی مثال دور دور تک نظر نہیں آتی ۔ آپ جید عالم تھے۔ آپ نے صحافت کا قبلہ درست کرنے میں اہم کردار ادا کیا۔ آپ شعلہ بیان خطیب تھے۔ انگریز کے ہندوستان سے رخصت ہو جانے کے بعد آپ ہندوستان کے پہلے وزیر تعلیم مقرر ہوئے ۔” ترجمان القرآن“، "تذکرہ" اور "خبار خاطر" آپ کی عمدہ ترین تخلیقات ہیں۔ ادبی ماہرین نے اپنے فن پاروں کو سجانے کے لیے جو ہنر آزمائے ہیں اُن سے نثر میں نیا رنگ ابھر کر آیا ہے ۔ ایسا ہی رنگ ابو الکلام آزاد کی نثر میں بھی دیکھنے کو ملتا ہے۔ آپ نے ”غبار خاطر“ لکھ کر نثر کو جو رنگ و آہنگ عطا کیا وہ بالکل نیا تھا اور اس سے پہلے اس رنگ کی جھلک بھی نظروں سے نہ گزری تھی۔ آپ نے کبھی فلسفی ہونے پر زور نہ دیا اور نہ ہی خود کو نظریہ ساز مفکر قرار دیا مگر یہ ضرور ہے کہ آپ نے نئے ذہن کی ترویج میں قوم کو نیا راستہ ضرور دکھایا۔ اس سے ظاہر ہوتا ہے کو قدرت نے آپ کو جو بصیرت عطا کی تھی وہ سمجھنے بوجھنے کے زیور سے آراستہ تھی۔
ابو الکلام آزاد کے علم و شخصیت نے ہندوستان میں جدید اسلام کی تشکیل کے لیے سرسید
احمد خاں اور اقبال کا انداز اختیار کیا۔ آپ نے 1912ء میں کلکتہ سے " الہلال " جاری کیا۔ اس مجلہ نے صحافت کی دنیا میں نہ صرف نام کمایا بلکہ سند و تصدیق کا درجہ حاصل کیا۔ جہاں تک اقبال اور مولانا ابوالکلام آزاد کے ذہنی رشتوں کی بات ہے تو ان میں کئی جگہ مماثلت پائی جاتی ہے۔ اقبال کے خطوط میں بھی مولانا کا ذکر نظر آتا ہے...

Wilfred Scawen Blunt and his Ideas on the Future of Islam

Wilfrid Scawen Blunt, like many aristocratic Englishmen in the age of Empire in the late 19th century, took an interest in the Muslim populations of the colonies being governed by Britain. As a prolific writer and poet, his approach differs from his contemporaries in being, on the whole, genuinely sympathetic to Islam. In his book ‘The Future of Islam’ he shows how important the power of Islam in coming centuries is likely to be, and touches upon many important topics, such as the growing spread of Islam in the world and possible adjustments to the Caliphate. He would like to see the formation of a friendly association between Great Britain and the Muslims of the world in the political interests of Britain. Inevitably, many of his predictions and wishes did not materialize in the 20th century. Wilfred Scawen Blunt [1840-1922] was an English gentleman who followed the leisurely pursuits available to affluent members of Victorian society, i.e, travelling and poetry. His travels in the Middle East made a powerful impression on his intellectual and emotional sensibilities. As E.M. Forster wrote in his essay on Blunt, he ‘was drawn to Islam, and at one time thought of professing it.’1 He was, no doubt, in sympathy with the subjugated peoples of the Middle East and with the Indians of South Asia who were groaning under the colonial yoke. Further in the essay, Forster writes, ‘Egyptians found him too proTurkish and Indians too anti-British.’2 This attitude was unique for a stolid Englishman of the time of the ‘highnoon of Empire’. Blunt feared the advance of European powers in Oriental lands. Forster further writes: ‘His detachment is amazing. He dreaded a war because it must involve Asia and Africa, and complete the enslavement of the conservative Oriental nations, whom he loved and who loved him……

Molecular Characterization of Microbial Oxidoreductases and Their Application in Polymer Biodegradation

The detoxification of xenobiotic organic compounds by various microorganism through oxidative coupling is facilitated with oxidoreductases. With the help of energy yielding biochemical reactions these microbes extract energy for their metabolic pathway. They promote the transfer of electrons from a reduced organic substrate to another chemical compound. Enzymatic bioremediation of toxic organic pollutant is the very effective strategy in complex environmental conditions. Oxidoreductases enzyme have a significant potential for the bioremediation of the xenobiotic compounds. Various electron donor complex polymeric substrates containing Phenol and aromatic amines oxidized by peroxidase in the presence of H2O2 while O2 in the case of dioxygenase. Fungi are important among microorganisms for production of extracellular peroxidases. The present study aimed for production and characterization of peroxidases (laccases and lignin peroxidases) and dioxygenase for polymer biodegradation. Fungal strains named as Nk-1, Nk-2, Nk-3 and Nk-4 were selected and processed for different optimization studies. NK- 1 was identified 18s rRNA sequencing as Phanerocheate chrysosporium was further selected for enzyme production. Maximum enzyme production was observed at temperature at 30°C, pH 5.5. Statistical analysis indicates the significance of model and components based on F value and P value <0.05. Purification of enzymes was done by column chromatography. The molecular weight estimation was carried out by Sodium dodecyl sulphate SDS. Fourier transform infrared (FTIR) spectroscopy of enzyme treated substrate revealed the structural changes as compared to control (without enzyme treatment). The decrease in weight (0.08g) was observed in enzymes treated film then control (0.1g). FTIR spectroscopy of enzyme treated plastic film revealed the structural changes as compared to control (without enzyme treatment) i.e. a new peak appeared at 3367 cm -1 (Alkenyl C-H stretch). The peak at wavelength 1633 cm-1 (C=C stretching vibration of aromatic ring) in treated sample was sharp and larger as compared to the control. A visible change in surface of PVC films in term of surface erosion was observed by Scanning Electron Microscopy (SEM) after enzyme treatment. Peroxidase enzymes have wide range of applications from biodegradation of recalcitrant compounds to paper and pulp, cosmetic, food and textile industry. Enhanced production from food waste as cheap substrate was studied. Biosynthesis of lignin peroxidase, manganese peroxidase and laccase enzymes from food waste as a substrate is possible and their production can be enhanced by optimizing different factors. The native way of synthesizing dioxygenase, laccase and lignin peroxidase are not enough to the current industrial demands mostly because of their small amount of yield and the high cost of purification or synthesis. Heterologous expression may allow the production of laccase and lignin peroxidase in higher amount and with desired characteristics. In the present research study, the heterologous expression of fungal lignin peroxidase and laccase were performed in the cells of DHα5 strain of E. coli bacteria. With the help of shake flask experiment, the enzyme assay for enzymes was performed and a variation in the enzyme activity was observed during incubation time. Molecular weight of lignin peroxidase and laccase were found to be 46 kDa and 66 kDa respectively, as determined by the SDS-PAGE analysis. The enhanced production of fungal lignin peroxidase and laccase can be achieved through heterologous expression in bacterial host so that the biodegradation of recalcitrant plastic waste can be speed up.