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Evaluation of Different Cost Effective Substrates for Surfactin Production by Bacillus Subtilis Snw3

Thesis Info

Author

Aiman Umar

Department

Department of Microbiology, QAU

Program

Mphil

Institute

Quaid-i-Azam University

Institute Type

Public

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2015

Thesis Completion Status

Completed

Page

108

Subject

Microbiology

Language

English

Other

Call No: DISS/M. Phil BIO 3880

Added

2021-02-17 19:49:13

Modified

2023-02-19 12:33:56

ARI ID

1676715193465

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خلاصہ بحث

ایمان اسلام کو جزو لاینفک ہے اس کے بغیر اسلام قابل قبول نہیں کوئی بھی شخص مکمل ایمان لائے بغیر دائرہ اسلام میں داخل نہیں ہو سکتا ۔ فصل اول میں ایمانیات کے بارے میں قرآن مجید کی درج ذیل سورتوں کی ۲۰ آیات سے وضاحت کی گئی ہے۔

سورة آل عمران آیت نمبر ۱۶۰، سورة النساء آیت نمبر۸۲، سورة الاعراف آیت نمبر۱۸۵، سورة يونس آیت نمبر۳۴، سورة بنى اسرائیل آیت نمبر ۹۹، سورة الانبياء آیت نمبر ۴۲، سورة الحج آیت نمبر۷۰، سورة المؤمنون آیت نمبر ۸۵،۸۶،۸۷،۸۸،۸۹، سورة النور آیت نمبر ۵۰، سورة الروم آیت نمبر ۳۵،۳۷ ،سورةالزمر آیت نمبر ۴۳، سورة المؤمن آیت نمبر ۸۱،۸۲، سورة المرسلات آیت نمبر۲۰،۲۵، اس فصل میں ان آیات میں اللہ تبارک وتعالیٰ نے اپنے بندوں سے سوال فرمایا ہے۔

اس فصل میں ہر آیت کو بیان کرنے کے بعد اس کی تفسیر پر روشنی ڈالی گئی ہے اور اس آیت میں استفہام کے استعمال کی وضاحت کی گئی ہے کہ ہر آیت میں اللہ تبارک و تعالیٰ کا سوال کرنے کے پیشِ نظر جو مقصد کارفرما تھا اس کو واضح کیا گیا ہے۔

Origin of Earth: A Quranic Perspective

The modern scientific concepts were clearly envisioned in the Qur'an date back to 7th century, when observational facilities were not available, mathematical principles were not discovered, primary principles (quarks) and fundamental forces  i.e. Gravitational and electromagnetic were not identified. The word earth (أرْضَARD) appears 409 times in Quran. The number of verses in which the Earth is mentioned first is quite small, e.g. Sura 2, verse 29 and sura 20, verse 4, where a reference is made to "Him Who created the earth and the high heavens". On the other hand the numbers of verses where the Heavens are mentioned before the Earth are much larger e.g. Sura-l-araf (7), Verse 54; SuraYunus (10), verse 3; SuraQaf (50), verse 38; Sura l-Hadid (79), verses 27 to 33 etc. The Quran describes itself as a book of guidance. Sura l-Baqarah, verse (67)[i] states:  قَالَ أعُوْذُ بِاللهِ اأنْ أَکُوْنَ مِنَ الْجَاهِلِيْن He said, "I seek refuge in Allah from being among the ignorant."The Qur'an does not render a coordinated description of the Earth Creation. In lieu of a continuous story of creation, there are verses dispersed all over the Quran which deal with certain aspects of the Earth Creation. These scattered verses provide information on the sequential events marking its development with varying degrees of detail. The Quran referred toward at least five points which shed light on the creation of heaven and earth.  And these points are entirely confirmed by scientific facts.    

Controlled Synthesis and Potential Applications of Eco-Friendly Polyurethane and Magnetic Nanomaterials

To broaden applications, increase environmental friendliness, reduce cost, and sustainability, water is a tempting choice as a solvent for waterborne polyurethane (WPU). WPU is a revolutionary step in the reduction of volatile organic contents in the field of green polymer chemistry. In the first part of the dissertation, eco-friendly emulsifier-free biodegradable WPU elastomers were synthesized via a two-step prepolymer process by using renewable ionomer lysine and aliphatic diamines as a chain extender (CE). Different series of WPU were synthesized by changing molecular weight (Mw) of soft segment (SS), NCO/OH ratio, length of CE, and methyl methacrylate (MMA) concentration. The focus of this research was to study the dependence of mechanical properties, thermal, surface, structural, and the drug delivery applications of WPU on length of CE, size of the hard segment (HS), NCO/OH ratio (3-4), molecular weight (Mw) of polyethylene glycol (PEG, Mw varies from 650 to 2000 g/mol), and concentration of MMA (10%-40%). Biodegradable WPUs were employed as the stimuli-responsive drug release matrix, loaded by cisplatin as a model anticancer drug. Sustained-drug release was studied by changing pH (4.4-7.4), polarity of drug release medium (solvents), temperature, concentration of MMA, Mw of PEG, length of CE and NCO/OH contents (3-4). So, drug release rate was adjusted under different conditions with the help of stimuli-responsive drug release WPU matrix. Semiconductor nanocrystals are potential resources for clean energy conversion and storage. In the 2nd part of this dissertation, the author focuses on the controlled synthesis of different magnetic nanoparticles (NPs) and robust photocatalytic systems, microwave absorber, and construction of anode material for a lithium-ion battery. Several scientific research achievements attained are as follows: (1) Eco-friendly, biocompatible, water dispersible, impurity-free, single-phase, citric acid surface capped, ultrafine-superparamagnetic magnetite nanoparticles (USM NPs) were prepared. USM NPs were synthesized by modifying wet chemical facile co-precipitation green itinerary. Size of USM NPs was tuned from 11-15 nm by controlling pH of reaction media. Citric acid, polyaniline, trimethoxy silyl propyl methacrylate, polyacrylamide, and polyamine surface-modified USM NPs ferrofluid was formed for different applications. Novel self-assembled morphologies of magnetite (Fe3O4) were controlled by using a facile, template-free hydrothermal pathway under optimized conditions engaging different precursors with the best control of morphology and electrochemical properties. A detailed study of the thermal, Controlled Synthesɨs and Potentɨal Applɨcations of Eco-friendly Polyurethane & Magnetɨc Nanomaterials xiv magnetic, dielectric, optical, and biological properties of USM NPs were conducted. Excellent reflection loss values confirmed that these USM NPs are promising microwave absorber which is very useful in satellite communications and EMR pollution control. USM NPs were further investigated for potential photocatalytic applications in dye degradation under visible light with detailed mechanism. (2) In the electric energy storage technology, lithium-ion battery (LIB) is a revolutionary step for making a green environment. The anodic material for LIB was made by using graphene-magnetite-polyaniline nanocomposite (Gr-Fe3O4-PANI NC) as a high-performance electrode. Gr-Fe3O4-PANI NC based LIB has shown superior reversible current capacity of 960 mAh g−1 and high cycling stability along with more than 99% coulombic efficiency even at a high current density of 5 Ag−1, low volume expansion, and excellent power capabilities over 250 cycles. (3) For the photocatalytic water oxidation application, morphologically-controlled pseudobrookite Fe2TiO5-TiO2 yolk-shell hollow spheres were synthesized by using facile sacrificial hard template strategy. The Fe2TiO5-TiO2 yolk-shell hollow spheres have exhibited high oxygen evolution reaction (OER) rate of 148 μmolg−1h−1 under UV-Vis light. So, designed Fe2TiO5-TiO2 yolk-shell hollow spheres are beneficial for the photocatalytic water oxidation. (4) Ultrapure hexagonal BaFe12O19 nanoferrite was prepared by a facile coprecipitation route. Crystallite size was found to grow from 50 nm to 78 nm when the annealing temperature increased from 800 °C to 1000 °C, respectively. The EMR absorption was obtained at a frequency of 2-18 GHz from VNA which showed maximum absorption of -26.52 dB at a frequency of 5.79 GHz