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Teaching of Physics to Visual Impaired Children at Secondary Level

Thesis Info

Author

Muhammad Iqbal, Qazi

Supervisor

Mahmood Hussain Awan

Institute

Allama Iqbal Open University

Institute Type

Public

City

Islamabad

Country

Pakistan

Thesis Completing Year

1999

Thesis Completion Status

Completed

Page

75.;

Subject

Education

Language

English

Other

Call No: 371.911 MUT; Publisher: Aiou

Added

2021-02-17 19:49:13

Modified

2023-01-06 19:20:37

ARI ID

1676710552990

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ڈاکٹر حفیظ سید

ڈاکٹر حفیظ سید مرحوم
افسوس ہے کہ ہماری علمی بزم کی ایک پرانی یادگار ڈاکٹر حفیظ سید مرحوم نے گزشتہ مہینہ انتقال کیا ان کی پوری زندگی تعلیمی اور علمی مشاغل میں گزری اور آخر میں الٰہ آباد یونیورسٹی کی اردو کی پروفیسری سے ریٹائرڈ ہوئے تھے، وہ مشہور صاحب قلم تھے اردو، انگریزی دونوں زبانوں میں سیکڑوں مضامین، ان کی یادگار ہیں مستقل کتابوں میں مشہور دکنی شاعر قاضی محمود بحری کا کلیات تصحیح و ترتیب کے جملہ لوازم کے ساتھ مرتب کرکے شائع کیا تھا، ان کو تصوف اور روحانیات سے خاص دلچسپی تھی، اس ذوق میں انھوں نے مختلف مذاہب کے روحانی مرکزوں اور ان کی روحانی شخصیتوں سے بھی استفادہ کیا تھا مگر آخر میں اپنے اصلی مرکز کی طرف لوٹ آئے تھے اور اسی پر ان کا خاتمہ ہوا، مرحوم علامہ شبلی کے صحبت یافتہ اور ارکان دارالمصنفین کے پرانے رفقاء میں تھے، اس لیے دارالمصنفین سے ان کو دیرینہ مخلصانہ تعلق تھا، اس کی مجلس عاملہ اور مجلس انتظامیہ کے رکن بھی تھے، ادھر کئی سال سے فالج میں مبتلا تھے، گذشتہ مہینہ آنکھ کھلوانے کے لیے سیتاپور گئے تھے، وہیں دفعتہ انتقال کیا اور الٰہ آباد میں تجہیزوتکفین ہوئی۔ اللھم اغفرْلہٗ وَ ارْحمَہٗ۔ (شاہ معین الدین ندوی، جنوری ۱۹۶۲ء)

 

Analisis Faktor-Faktor Yang Mempengaruhi Penyerapan Anggaran Pada Dinas Perumahan Rakyat dan Kawasan Permukiman

Penelitian ini didasari oleh suatu kondisi yaitu belum maksimalnya penyerapan anggaran pada Dinas Perumahan Rakyat dan Kawasan Permukiman Kabupaten Nias Utara. Oleh karena itu masalah ini harus segera diatasi, salah satunya melalui penelitian untuk menemukan faktor-faktor yang mempengaruhi penyerapan anggaran ini bisa maksimal. Penelitian ini merupakan penelitian kualitatif untuk meneliti faktor-faktor yang mempengaruhi penyerapan anggaran pada Dinas Perumahan Rakyat dan Kawasan Permukiman Kabupaten Nias Utara. Fokus penelitian ini adalah menjelaskan faktor-faktor yang mempengaruhi penyerapan anggaran yaitu faktor perencanaan, faktor administrasi, faktor sumber daya manusia, faktor pengadaan barang/jasa, faktor regulasi dan faktor komitmen organisasi. Sampel seluruh pegawai pada Dinas Perumahan Rakyat dan Kawasan Permukiman Kabupaten Nias Utara dengan jumlah sampel sebanyak 17 orang. Metode penelitian yang digunakan yaitu riset deskriptif kualitatif yaitu riset didasarkan pada data kualitatif dalam pernyataan-pernyataan. Hasil penelitian merekomendasikan untuk lebih cepat dalam pengesahan anggaran oleh DPRD dan Pemerintah Daerah sehingga memiliki waktu untuk penyerapannya, melibatkan masing-masing SKPD dalam merencanakan anggaran sehingga tidak terdapat kegiatan penting yang terlewatkan dan perlu perhatian dari segi sarana dan prasana yang kurang memadai karena akan mempengaruhi kinerja pegawai.

Development and Electrochemical Characterization of Nanocomposites for Biogas Based Fuel Cells

Development and Electrochemical Characterization of Nanocomposites for Biogas Based Fuel Cells There is an urgent need to explore affordable and renewable energy resources because of the decline in reserves of fossil fuels. Biomass is an abundantly available resource in nature and can be used to generate energy in a sustainable manner. Fuel cells deliver a combination of advantages and make use of renewable energy sources. Solid oxide fuel cells (SOFCs), specifically, overcome the petroleum scarcity issue by using biofuel. The aim of this thesis is the development of nanocomposite electrolytes and anode composite catalysts for low-temperature SOFCs fuelled with biogas for clean energy applications. In the present work, Sr/Sm-doped ceria (Sr-SDC) nanocomposite electrolytes with a core shell structure are synthesized with different compositions for low temperature SOFCs. A co-doping technique is successfully used to achieve a significant enhancement in the ionic conductivity of 0.50 S/cm at 600 ˚C for the nanocomposite electrolyte Sr0.1Sm0.1Ce0.8O2-δ-carbonate. The carbonate phase (shell layer) acts as a barrier and protects the SDC (core) from the partial reduction by the fuel. This carbonate shell introduces an interface between these two phases, which is the key to realizing the interfacial super-ionic conduction pathways. This work also describes the development of ceria electrolytes that are doped and co-doped with lanthanum (La) and zirconium (Zr) and show excellent thermal stability. The ionic conductivity of La0.2Ce0.8O2-δ (LDC), Zr0.2Ce0.8O2-δ (ZDC) and Zr0.2La0.2Ce0.6O2-δ (ZLDC) has been measured in the temperature ranges of 450 °C to 650 °C and LDC achieved a high ionic conductivity of 0.81 × 10-2 S/cm. Thermal expansion coefficients (TECs) of these electrolytes have also been found to have good concurrence and compatibility with commonly used electrolytes and electrodes. The main objective of this work is the development of stable and active anode catalysts that run over biogas as well as hydrogen for low temperature SOFCs. The anode composite Ni0.6Zn0.4Gd0.2Ce0.8O2-δ (NiZn-GDC) has been developed that exhibits semiconductor conductive behaviour, and a maximum conductivity of 1.37 S/cm has been achieved at 600 ˚C. This composite anode is found to have excellent thermally stability as well as being carbon resistant to coking during testing with biogas. A maximum power density of 820 and 548 mW/cm2 has been reported with hydrogen and biogas fuels, respectively, at 600 ˚C. This thesis also describes Ni-based and Ni-free anode catalysts NiLiCu-oxide with LDC for SOFCs fuelled with biogas. The anode composite NLC622-LDC has reported a maximum DC conductivity of 3.47 S/cm with Pmax of 650 and 390 mW/cm2 for hydrogen and biogas, respectively, at 600 ˚C. A Ni free anode catalyst Zn0.2Li0.2Cu0.6O2-δ (ZnLiCu-oxide) is also developed as a potential candidate for biogas-based SOFCs that bypasses the difficulty of carbon deposition and has a maximum conductivity of 4.0 S/cm at 600 ˚C. An open circuit voltage (OCV) of 0.96 V is achieved with maximum power density of 600 mW/cm2 with biogas (50% methane) at 650 ˚C. In the present work, a theoretical model of FC system has been designed using MATLAB software, and it makes use of biomass (animal waste, redwood, rice husk and sugar cane). In the last part of the thesis, a partial research work has been conducted to cast the tapes of NiO-GDC (NiO-Gd0.1Ce0.9O1.95) as anode and GDC (Gd0.1Ce0.9O1.95) as electrolyte via aqueous tape casting method. The aqueous tape casting is an emerging and cost-effective technique for the commercialization of SOFCs but faces challenges with ceria tapes due to its poor mechanical strength and co-sintering of half-cells.